1 Change log file for Exim from version 4.21
2 -------------------------------------------
7 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
8 and 3.4.4 - once the server is enabled to respond to an OCSP request
9 it does even when not requested, resulting in a stapling non-aware
10 client dropping the TLS connection.
12 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
13 support variable-length bit vectors. No functional change.
15 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
16 The I= interface field on outgoing lines is now after the H= remote
17 host field, same as incoming lines. There is a separate
18 outgoing_interface log selector which allows you to disable the
21 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
22 If not running log_selector +smtp_connection the mainlog would be held
23 open indefinitely after a "too many connections" event, including to a
24 deleted file after a log rotate. Leave the per net connection logging
25 leaving it open for efficiency as that will be quickly detected by the
26 check on the next write.
28 HS/01 Bug 1671: Fix post transport crash.
29 Processing the wait-<transport> messages could crash the delivery
30 process if the message IDs didn't exist for some reason. When
31 using 'split_spool_directory=yes' the construction of the spool
32 file name failed already, exposing the same netto behaviour.
34 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
35 mime_regex ACL conditions.
37 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
38 to DSN fail messages (bounces): remote IP, remote greeting, remote response
39 to HELO, local diagnostic string.
41 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
42 log line to debug. Even when configured with a tls authenticator many
43 client connections are expected to not authenticate in this way, so
44 an authenticate fail is not an error.
49 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
52 JH/02 The smtp transport option "multi_domain" is now expanded.
54 JH/03 The smtp transport now requests PRDR by default, if the server offers
57 JH/04 Certificate name checking on server certificates, when exim is a client,
58 is now done by default. The transport option tls_verify_cert_hostnames
59 can be used to disable this per-host. The build option
60 EXPERIMENTAL_CERTNAMES is withdrawn.
62 JH/05 The value of the tls_verify_certificates smtp transport and main options
63 default to the word "system" to access the system default CA bundle.
64 For GnuTLS, only version 3.0.20 or later.
66 JH/06 Verification of the server certificate for a TLS connection is now tried
67 (but not required) by default. The verification status is now logged by
68 default, for both outbound TLS and client-certificate supplying inbound
71 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
74 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
75 Status Notification (bounce) messages are now MIME format per RFC 3464.
76 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
77 under the control of the dsn_advertise_hosts option, and routers may
78 have a dsn_lasthop option.
80 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
81 default, modifiable by a malware= option. The list separator for
82 the options can now be changed in the usual way. Bug 68.
84 JH/10 The smtp_receive_timeout main option is now expanded before use.
86 JH/11 The incoming_interface log option now also enables logging of the
87 local interface on delivery outgoing connections.
89 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
90 if the interface and destination host and port all match.
92 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
95 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
96 Patch from Andrew Lewis.
98 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
99 now supports optional time-restrictions, weighting, and priority
100 modifiers per server. Patch originally by <rommer@active.by>.
102 JH/16 The spamd_address main option now supports a mixed list of local
103 and remote servers. Remote servers can be IPv6 addresses, and
104 specify a port-range.
106 JH/17 Bug 68: The spamd_address main option now supports an optional
107 timeout value per server.
109 JH/18 Bug 1581: Router and transport options headers_add/remove can
110 now have the list separator specified.
112 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
115 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
118 JH/21 Support for the A6 type of dns record is withdrawn.
120 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
121 rather than the verbs used.
123 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
124 from 255 to 1024 chars.
126 JH/24 Verification callouts now attempt to use TLS by default.
128 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
129 are generic router options now. The defaults didn't change.
131 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
132 Original patch from Alexander Shikoff, worked over by JH.
134 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
135 files if ZCAT_COMMAND is not executable.
137 JH/26 Bug 1539: Add timout/retry options on dnsdb lookups.
139 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
141 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
142 Normally benign, it bites when the pair was led to by a CNAME;
143 modern usage is to not canoicalize the domain to a CNAME target
144 (and we were inconsistent anyway for A-only vs AAAA+A).
146 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
148 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
149 when evaluating $sender_host_dnssec.
151 JH/31 Check the HELO verification lookup for DNSSEC, adding new
152 $sender_helo_dnssec variable.
154 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
156 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
158 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
160 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
161 documented as working, but never had. Support all but $spam_report.
163 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
164 added for tls authenticator.
169 TL/01 When running the test suite, the README says that variables such as
170 no_msglog_check are global and can be placed anywhere in a specific
171 test's script, however it was observed that placement needed to be near
172 the beginning for it to behave that way. Changed the runtest perl
173 script to read through the entire script once to detect and set these
174 variables, reset to the beginning of the script, and then run through
175 the script parsing/test process like normal.
177 TL/02 The BSD's have an arc4random API. One of the functions to induce
178 adding randomness was arc4random_stir(), but it has been removed in
179 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
180 function when detected.
182 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
183 cause callback expansion.
185 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
186 syntax errors in an expansion can be treated as a string instead of
187 logging or causing an error, due to the internal use of bool_lax
188 instead of bool when processing it.
190 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
191 server certificates when making smtp deliveries.
193 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
195 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
197 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
199 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
200 Merged patch from Sebastian Wiedenroth.
202 JH/05 Fix results-pipe from transport process. Several recipients, combined
203 with certificate use, exposed issues where response data items split
204 over buffer boundaries were not parsed properly. This eventually
205 resulted in duplicates being sent. This issue only became common enough
206 to notice due to the introduction of conection certificate information,
207 the item size being so much larger. Found and fixed by Wolfgang Breyha.
209 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
210 size buffer was used, resulting in syntax errors when an expansion
213 JH/07 Add support for directories of certificates when compiled with a GnuTLS
214 version 3.3.6 or later.
216 JH/08 Rename the TPDA expermimental facility to Event Actions. The #ifdef
217 is EXPERIMENTAL_EVENT, the main-configuration and transport options
218 both become "event_action", the variables become $event_name, $event_data
219 and $event_defer_errno. There is a new variable $verify_mode, usable in
220 routers, transports and related events. The tls:cert event is now also
221 raised for inbound connections, if the main configuration event_action
224 TL/06 In test suite, disable OCSP for old versions of openssl which contained
225 early OCSP support, but no stapling (appears to be less than 1.0.0).
227 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
228 server certificate names available under the smtp transport option
229 "tls_verify_cert_hostname" now do not permit multi-component wildcard
232 JH/10 Time-related extraction expansions from certificates now use the main
233 option "timezone" setting for output formatting, and are consistent
234 between OpenSSL and GnuTLS compilations. Bug 1541.
236 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
237 encoded parameter in the incoming message. Bug 1558.
239 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
240 include certificate info, eximon was claiming there were spoolfile
243 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
245 JH/14 Log delivery-related information more consistently, using the sequence
246 "H=<name> [<ip>]" wherever possible.
248 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
249 are problematic for Debian distribution, omit them from the release
252 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
254 JH/16 Fix string representation of time values on 64bit time_t anchitectures.
257 JH/17 Fix a null-indirection in certextract expansions when a nondefault
258 output list separator was used.
263 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
264 checkers that were complaining about end of non-void function with no
267 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
268 This was a regression intruduced in 4.83 by another bugfix.
270 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
272 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
273 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
279 TF/01 Correctly close the server side of TLS when forking for delivery.
281 When a message was received over SMTP with TLS, Exim failed to clear up
282 the incoming connection properly after forking off the child process to
283 deliver the message. In some situations the subsequent outgoing
284 delivery connection happened to have the same fd number as the incoming
285 connection previously had. Exim would try to use TLS and fail, logging
286 a "Bad file descriptor" error.
288 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
289 utilities have not been installed.
291 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
292 temporary space as the ACL may create new global variables.
294 TL/01 LDAP support uses per connection or global context settings, depending
295 upon the detected version of the libraries at build time.
297 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
298 to extract and use the src ip:port in logging and expansions as if it
299 were a direct connection from the outside internet. PPv2 support was
300 updated based on HAProxy spec change in May 2014.
302 JH/02 Add ${listextract {number}{list}{success}{fail}}.
304 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
305 Properly escape header and check for NULL return.
307 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
310 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
312 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
313 characters in header names, implemented as a verify condition.
314 Contributed by Michael Fischer v. Mollard.
316 TL/05 Rename SPF condition results err_perm and err_temp to standardized
317 results permerror and temperror. Previous values are deprecated but
318 still accepted. In a future release, err_perm and err_temp will be
319 completely removed, which will be a backward incompatibility if the
320 ACL tests for either of these two old results. Patch contributed by
321 user bes-internal on the mailing list.
323 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
325 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
326 selectors, in both main and reject logs.
328 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
331 JH/07 Add malware type "sock" for talking to simple daemon.
333 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
335 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
336 routers/transports under cutthrough routing.
338 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
339 numbers. Touch up "bool" conditional to keep the same definition.
341 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
343 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
345 JH/12 Expand items in router/transport headers_add or headers_remove lists
346 individually rather than the list as a whole. Bug 1452.
348 Required for reasonable handling of multiple headers_ options when
349 they may be empty; requires that headers_remove items with embedded
350 colons must have them doubled (or the list-separator changed).
352 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
353 view the policy declared in the DMARC record. Currently, $dmarc_status
354 is a combined value of both the record presence and the result of the
357 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
359 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
360 dnslookup router and the smtp transport (applying to the forward
363 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
364 of ldap servers used for a specific lookup. Patch provided by Heiko
367 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
368 New variable $lookup_dnssec_authenticated for observability.
370 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
371 Patch submitted by Lars Timman.
373 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
375 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
376 Requires trusted mode and valid format message id, aborts otherwise.
377 Patch contributed by Heiko Schlichting.
379 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
380 certextract with support for various fields. Bug 1358.
382 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
383 is requested by default, modifiable by smtp transport option
386 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
387 operate on certificate variables to give certificate fingerprints
388 Also new ${sha256:cert_variable}.
390 JH/23 The PRDR feature is moved from being Experimental into the mainline.
392 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
393 Christian Aistleitner.
395 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
397 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
398 file. Patch from Wolfgang Breyha.
400 JH/25 Expand the coverage of the delivery $host and $host_address to
401 client authenticators run in verify callout. Bug 1476.
403 JH/26 Port service names are now accepted for tls_on_connect_ports, to
404 align with daemon_smtp_ports. Bug 72.
406 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
407 support and error reporting did not work properly.
409 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
410 and is readable. Patch from Andrew Colin Kissa.
412 TL/14 Enhance documentation of ${run expansion and how it parses the
413 commandline after expansion, particularly in the case when an
414 unquoted variable expansion results in an empty value.
416 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
418 PP/02 Fix internal collision of T_APL on systems which support RFC3123
419 by renaming away from it. Addresses GH issue 15, reported by
422 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
424 TL/15 SECURITY: prevent double expansion in math comparison functions
425 (can expand unsanitized data). Not remotely exploitable.
432 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
434 PP/02 Make -n do something, by making it not do something.
435 When combined with -bP, the name of an option is not output.
437 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
440 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
441 $sender_host_name and config options to manage this, and basic check
444 PP/05 DSCP support for outbound connections and control modifier for inbound.
446 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
447 (Only plugin which currently uses this is kerberos4, which nobody should
448 be using, but we should make it available and other future plugins might
449 conceivably use it, even though it would break NAT; stuff *should* be
450 using channel bindings instead).
452 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
453 name; added for Sendmail compatibility; requires admin caller.
454 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
455 just ignore it); requires trusted caller.
456 Also parse but ignore: -Ac -Am -X<logfile>
459 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
461 TL/02 Add +smtp_confirmation as a default logging option.
463 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
464 Patch by Magnus Holmgren from 2007-02-20.
466 TL/04 Bugzilla 1281 - Spec typo.
467 Bugzilla 1283 - Spec typo.
468 Bugzilla 1290 - Spec grammar fixes.
470 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
472 TL/06 Add Experimental DMARC support using libopendmarc libraries.
474 TL/07 Fix an out of order global option causing a segfault. Reported to dev
475 mailing list by by Dmitry Isaikin.
477 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
479 JH/02 Support "G" suffix to numbers in ${if comparisons.
481 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
483 NM/01 Bugzilla 1197 - Spec typo
484 Bugzilla 1196 - Spec examples corrections
486 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
488 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
489 gnutls_enable_pkcs11, but renamed to more accurately indicate its
492 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
493 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
495 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
496 "acl {{name}{arg}...}", and optional args on acl condition
499 JH/05 Permit multiple router/transport headers_add/remove lines.
501 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
503 JH/07 Avoid using a waiting database for a single-message-only transport.
504 Performance patch from Paul Fisher. Bugzilla 1262.
506 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
509 JH/09 Add $headers_added variable, with content from use of ACL modifier
510 add_header (but not yet added to the message). Bugzilla 199.
512 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
513 Pulled from Bugzilla 817 by Wolfgang Breyha.
515 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
517 (nb: this is the same fix as in Exim 4.80.1)
519 JH/11 Add A= logging on delivery lines, and a client_set_id option on
522 JH/12 Add optional authenticated_sender logging to A= and a log_selector
525 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
527 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
528 advertise SMTP AUTH mechanism to us, instead of a generic
529 protocol violation error. Also, make Exim more robust to bad
530 data from the Dovecot auth socket.
532 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
534 When a queue runner is handling a message, Exim first routes the
535 recipient addresses, during which it prunes them based on the retry
536 hints database. After that it attempts to deliver the message to
537 any remaining recipients. It then updates the hints database using
540 So if a recipient address works intermittently, it can get repeatedly
541 deferred at routing time. The retry hints record remains fresh so the
542 address never reaches the final cutoff time.
544 This is a fairly common occurrence when a user is bumping up against
545 their storage quota. Exim had some logic in its local delivery code
546 to deal with this. However it did not apply to per-recipient defers
547 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
549 This change adds a proper retry rule check during routing so that the
550 final cutoff time is checked against the message's age. We only do
551 this check if there is an address retry record and there is not a
552 domain retry record; this implies that previous attempts to handle
553 the address had the retry_use_local_parts option turned on. We use
554 this as an approximation for the destination being like a local
555 delivery, as in LMTP.
557 I suspect this new check makes the old local delivery cutoff check
558 redundant, but I have not verified this so I left the code in place.
560 TF/02 Correct gecos expansion when From: is a prefix of the username.
562 Test 0254 submits a message to Exim with the header
566 When I ran the test suite under the user fanf2, Exim expanded
567 the header to contain my full name, whereas it should have added
568 a Resent-Sender: header. It erroneously treats any prefix of the
569 username as equal to the username.
571 This change corrects that bug.
573 GF/01 DCC debug and logging tidyup
574 Error conditions log to paniclog rather than rejectlog.
575 Debug lines prefixed by "DCC: " to remove any ambiguity.
577 TF/03 Avoid unnecessary rebuilds of lookup-related code.
579 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
580 Bug spotted by Jeremy Harris; was flawed since initial commit.
581 Would have resulted in OCSP responses post-SNI triggering an Exim
582 NULL dereference and crash.
584 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
586 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
587 Bug detection, analysis and fix by Samuel Thibault.
588 Bugzilla 1331, Debian bug #698092.
590 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
592 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
593 Server implementation by Todd Lyons, client by JH.
594 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
595 config variable "prdr_enable" controls whether the server
596 advertises the facility. If the client requests PRDR a new
597 acl_data_smtp_prdr ACL is called once for each recipient, after
598 the body content is received and before the acl_smtp_data ACL.
599 The client is controlled by bolth of: a hosts_try_prdr option
600 on the smtp transport, and the server advertisement.
601 Default client logging of deliveries and rejections involving
602 PRDR are flagged with the string "PRDR".
604 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
605 fclose(). Diagnosis by Todd Lyons.
607 PP/17 Update configure.default to handle IPv6 localhost better.
608 Patch by Alain Williams (plus minor tweaks).
611 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
612 This is now consistent with GnuTLS, and is now documented: the
613 previous undocumented portable approach to treating the option as
614 unset was to force an expansion failure. That still works, and
615 an empty string is now equivalent.
617 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
618 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
619 not performing validation itself.
621 PP/20 Added force_command boolean option to pipe transport.
622 Patch from Nick Koston, of cPanel Inc.
624 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
627 TF/04 Added udpsend ACL modifer and hexquote expansion operator
629 PP/21 Fix eximon continuous updating with timestamped log-files.
630 Broken in a format-string cleanup in 4.80, missed when I repaired the
631 other false fix of the same issue.
632 Report and fix from Heiko Schlichting.
635 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
636 Report from Prashanth Katuri.
638 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
639 It's SecureTransport, so affects any MacOS clients which use the
640 system-integrated TLS libraries, including email clients.
642 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
643 using a MIME ACL for non-SMTP local injection.
644 Report and assistance in diagnosis by Warren Baker.
646 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
648 JH/16 Fix comparisons for 64b. Bugzilla 1385.
650 TL/09 Add expansion variable $authenticated_fail_id to keep track of
651 last id that failed so it may be referenced in subsequent ACL's.
653 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
656 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
657 ldap library initialization, allowing self-signed CA's to be
658 used. Also properly sets require_cert option later in code by
659 using NULL (global ldap config) instead of ldap handle (per
660 session). Bug diagnosis and testing by alxgomz.
662 TL/12 Enhanced documentation in the ratelimit.pl script provided in
663 the src/util/ subdirectory.
665 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
666 renamed to Transport Post Delivery Action by Jeremy Harris, as
669 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
670 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
671 redis_servers = needs to be configured which will be used by the redis
672 lookup. Patch from Warren Baker, of The Packet Hub.
674 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
676 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
677 hostname or reverse DNS when processing a host list. Used suggestions
678 from multiple comments on this bug.
680 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
682 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
683 Missed a few lines, added it to make the runtest require no keyboard
686 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
687 contains upper case chars. Make router use caseful_local_part.
689 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
690 support when GnuTLS has been built with p11-kit.
696 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
698 This, or similar/improved, will also be change PP/11 of 4.82.
704 PP/01 Handle short writes when writing local log-files.
705 In practice, only affects FreeBSD (8 onwards).
706 Bugzilla 1053, with thanks to Dmitry Isaikin.
708 NM/01 Bugzilla 949 - Documentation tweak
710 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
713 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
715 PP/02 Implemented gsasl authenticator.
717 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
719 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
720 `pkg-config foo` for cflags/libs.
722 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
723 with rest of GSASL and with heimdal_gssapi.
725 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
726 `pkg-config foo` for cflags/libs for the TLS implementation.
728 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
729 properties get this fed in as external SSF. A number of robustness
730 and debugging improvements to the cyrus_sasl authenticator.
732 PP/08 cyrus_sasl server now expands the server_realm option.
734 PP/09 Bugzilla 1214 - Log authentication information in reject log.
735 Patch by Jeremy Harris.
737 PP/10 Added dbmjz lookup type.
739 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
741 PP/12 MAIL args handles TAB as well as SP, for better interop with
742 non-compliant senders.
743 Analysis and variant patch by Todd Lyons.
745 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
746 Bug report from Lars Müller <lars@samba.org> (via SUSE),
747 Patch from Dirk Mueller <dmueller@suse.com>
749 PP/13 tls_peerdn now print-escaped for spool files.
750 Observed some $tls_peerdn in wild which contained \n, which resulted
751 in spool file corruption.
753 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
754 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
755 or write after TLS renegotiation, which otherwise led to messages
758 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
759 as a tracking header (ie: a signed header comes before the signature).
760 Patch from Wolfgang Breyha.
762 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
763 comma-sep list; embedded commas doubled.
765 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
767 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
769 Report and patch from Dmitry Banschikov.
771 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
772 Removed SSL_clear() after SSL_new() which led to protocol negotiation
773 failures. We appear to now support TLS1.1+ with Exim.
775 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
776 lets Exim select keys and certificates based upon TLS SNI from client.
777 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
778 before an outbound SMTP session. New log_selector, +tls_sni.
780 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
781 NULL dereference. Report and patch from Alun Jones.
783 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
784 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
785 Not seeing resolver debug output on NetBSD, but suspect this is a
786 resolver implementation change.
788 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
789 Left warnings. Added "eximon gdb" invocation mode.
791 PP/21 Defaulting "accept_8bitmime" to true, not false.
793 PP/22 Added -bw for inetd wait mode support.
795 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
796 locate the relevant includes and libraries. Made this the default.
798 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
799 Bugzilla 1246, report and most of solution from Tomasz Kusy.
801 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
802 This may cause build issues on older platforms.
804 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
805 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
806 gnutls_require_mac & gnutls_require_protocols (no longer supported).
807 Added SNI support via GnuTLS too.
808 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
810 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
812 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
813 Applied second patch from Janne, implementing suggestion to default
814 multiple-strings-in-record handling to match SPF spec.
816 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
818 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
819 read-only, out of scope).
820 Patch from Wolfgang Breyha, report from Stuart Northfield.
822 PP/29 Fix three issues highlighted by clang analyser static analysis.
823 Only crash-plausible issue would require the Cambridge-specific
824 iplookup router and a misconfiguration.
825 Report from Marcin Mirosław.
827 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
829 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
830 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
831 As part of this, removing so much warning spew let me fix some minor
832 real issues in debug logging.
834 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
835 assignment on my part. Fixed.
837 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
838 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
839 Janne Snabb (who went above and beyond: thank you).
841 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
842 string otherwise requires a connection and a bunch more work and it's
843 relatively easy to get wrong. Should also expose TLS library linkage
846 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
847 64-bit ${eval} (JH/03).
849 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
850 GNU libc to support some of the 64-bit stuff, should not lead to
851 conflicts. Defined before os.h is pulled in, so if a given platform
852 needs to override this, it can.
854 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
855 protection layer was required, which is not implemented.
856 Bugzilla 1254, patch from Wolfgang Breyha.
858 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
859 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
860 tls_dhparam take prime identifiers. Also unbreak combination of
861 OpenSSL+DH_params+TLSSNI.
863 PP/39 Disable SSLv2 by default in OpenSSL support.
869 PP/01 Solaris build fix for Oracle's LDAP libraries.
870 Bugzilla 1109, patch from Stephen Usher.
872 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
874 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
877 TF/02 Fix a couple more cases where we did not log the error message
878 when unlink() failed. See also change 4.74-TF/03.
880 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
881 lock up or crash if it happened to be inside a call to libc when it
882 got a SIGUSR1 from exiwhat.
884 The SIGUSR1 handler appends the current process status to the process
885 log which is later printed by exiwhat. It used to use the general
886 purpose logging code to do this, but several functions it calls are
887 not safe for signals.
889 The new output code in the SIGUSR1 handler is specific to the process
890 log, and simple enough that it's easy to inspect for signal safety.
891 Removing some special cases also simplifies the general logging code.
892 Removing the spurious timestamps from the process log simplifies
895 TF/04 Improved ratelimit ACL condition.
897 The /noupdate option has been deprecated in favour of /readonly which
898 has clearer semantics. The /leaky, /strict, and /readonly update modes
899 are mutually exclusive. The update mode is no longer included in the
900 database key; it just determines when the database is updated. (This
901 means that when you upgrde Exim will forget old rate measurements.)
903 Exim now checks that the per_* options are used with an update mode that
904 makes sense for the current ACL. For example, when Exim is processing a
905 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
906 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
907 must specify per_mail/readonly. If you omit the update mode it defaults to
908 /leaky where that makes sense (as before) or /readonly where required.
910 The /noupdate option is now undocumented but still supported for
911 backwards compatibility. It is equivalent to /readonly except that in
912 ACLs where /readonly is required you may specify /leaky/noupdate or
913 /strict/noupdate which are treated the same as /readonly.
915 A useful new feature is the /count= option. This is a generalization
916 of the per_byte option, so that you can measure the throughput of other
917 aggregate values. For example, the per_byte option is now equivalent
918 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
920 The per_rcpt option has been generalized using the /count= mechanism
921 (though it's more complicated than the per_byte equivalence). When it is
922 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
923 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
924 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
925 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
926 Note that using per_rcpt with a non-readonly update mode in more than
927 one ACL will cause the recipients to be double-counted. (The per_mail
928 and per_byte options don't have this problem.)
930 The handling of very low rates has changed slightly. If the computed rate
931 is less than the event's count (usually one) then this event is the first
932 after a long gap. In this case the rate is set to the same as this event's
933 count, so that the first message of a spam run is counted properly.
935 The major new feature is a mechanism for counting the rate of unique
936 events. The new per_addr option counts the number of different
937 recipients that someone has sent messages to in the last time period. It
938 behaves like per_rcpt if all the recipient addresses are different, but
939 duplicate recipient addresses do not increase the measured rate. Like
940 the /count= option this is a general mechanism, so the per_addr option
941 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
942 example, measure the rate that a client uses different sender addresses
943 with the options per_mail/unique=$sender_address. There are further
944 details in the main documentation.
946 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
948 TF/06 Removed a few PCRE remnants.
950 TF/07 Automatically extract Exim's version number from tags in the git
951 repository when doing development or release builds.
953 PP/02 Raise smtp_cmd_buffer_size to 16kB.
954 Bugzilla 879. Patch from Paul Fisher.
956 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
957 Heavily based on revision 40f9a89a from Simon Arlott's tree.
960 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
962 PP/05 Variable $av_failed, true if the AV scanner deferred.
963 Bugzilla 1078. Patch from John Horne.
965 PP/06 Stop make process more reliably on build failure.
966 Bugzilla 1087. Patch from Heiko Schlittermann.
968 PP/07 Make maildir_use_size_file an _expandable_ boolean.
969 Bugzilla 1089. Patch from Heiko Schlittermann.
971 PP/08 Handle ${run} returning more data than OS pipe buffer size.
972 Bugzilla 1131. Patch from Holger Weiß.
974 PP/09 Handle IPv6 addresses with SPF.
975 Bugzilla 860. Patch from Wolfgang Breyha.
977 PP/10 GnuTLS: support TLS 1.2 & 1.1.
979 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
982 PP/11 match_* no longer expand right-hand-side by default.
983 New compile-time build option, EXPAND_LISTMATCH_RHS.
984 New expansion conditions, "inlist", "inlisti".
986 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
988 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
990 PP/14 fix log_write() format string regression from TF/03.
991 Bugzilla 1152. Patch from Dmitry Isaikin.
997 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
999 PP/02 Harmonised TLS library version reporting; only show if debugging.
1000 Layout now matches that introduced for other libraries in 4.74 PP/03.
1002 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1004 PP/04 New "dns_use_edns0" global option.
1006 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1009 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1010 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1012 TK/01 Updated PolarSSL code to 0.14.2.
1013 Bugzilla 1097. Patch from Andreas Metzler.
1015 PP/07 Catch divide-by-zero in ${eval:...}.
1016 Fixes bugzilla 1102.
1018 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1021 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1022 format-string attack -- SECURITY: remote arbitrary code execution.
1024 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1025 time unintentionally subject to list matching rules, letting the header
1026 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1027 arbitrary string expansion). This allowed for information disclosure.
1029 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
1030 INT_MIN/-1 -- value coerced to INT_MAX.
1036 NM/01 Workround for PCRE version dependency in version reporting
1039 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
1040 This fixes portability to compilers other than gcc, notably
1041 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
1043 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
1044 makefiles for portability to HP-UX and POSIX correctness.
1046 PP/01 Permit LOOKUP_foo enabling on the make command-line.
1047 Also via indented variable definition in the Makefile.
1048 (Debugging by Oliver Heesakkers).
1050 PP/02 Restore caching of spamd results with expanded spamd_address.
1051 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1053 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1054 Improves build reliability. Fix from: Frank Elsner
1056 NM/02 Fix wide character breakage in the rfc2047 coding
1057 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1059 NM/03 Allow underscore in dnslist lookups
1060 Fixes bug 1026. Patch from Graeme Fowler
1062 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1063 Code patches from Adam Ciarcinski of NetBSD.
1065 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1068 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1069 is logged, to avoid truncation. Patch from John Horne.
1071 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1072 Patch from Jakob Hirsch.
1074 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1075 SQL string expansion failure details.
1076 Patch from Andrey Oktyabrski.
1078 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1079 Patch from Simon Arlott.
1081 PP/09 New lookups functionality failed to compile on old gcc which rejects
1082 extern declarations in function scope.
1083 Patch from Oliver Fleischmann
1085 PP/10 Use sig_atomic_t for flags set from signal handlers.
1086 Check getgroups() return and improve debugging.
1087 Fixed developed for diagnosis in bug 927 (which turned out to be
1090 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1091 Patch from Mark Zealey.
1093 PP/12 Bugzilla 1056: Improved spamd server selection.
1094 Patch from Mark Zealey.
1096 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1097 Based on patch from Heiko Schlittermann.
1099 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1100 Patch from Uwe Doering, sign-off by Michael Haardt.
1102 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1103 variable declaration deep within a block. Bug and patch from
1106 PP/15 lookups-Makefile IRIX compatibilty coercion.
1108 PP/16 Make DISABLE_DKIM build knob functional.
1110 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1111 Patch by Simon Arlott
1113 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1114 variable argument macros. Our copy now differs from upstream.
1120 TF/01 Failure to get a lock on a hints database can have serious
1121 consequences so log it to the panic log.
1123 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1124 controlled using the smtp_confirmation log selector.
1126 TF/03 Include the error message when we fail to unlink a spool file.
1128 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1129 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1130 for maintaining out-of-tree patches for some time.
1132 PP/01 Bugzilla 139: Documentation and portability issues.
1133 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1134 Handle per-OS dynamic-module compilation flags.
1136 PP/02 Let /dev/null have normal permissions.
1137 The 4.73 fixes were a little too stringent and complained about the
1138 permissions on /dev/null. Exempt it from some checks.
1139 Reported by Andreas M. Kirchwitz.
1141 PP/03 Report version information for many libraries, including
1142 Exim version information for dynamically loaded libraries. Created
1143 version.h, now support a version extension string for distributors
1144 who patch heavily. Dynamic module ABI change.
1146 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1147 privilege escalation vulnerability whereby the Exim run-time user
1148 can cause root to append content of the attacker's choosing to
1151 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1154 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1155 If dropping privileges for untrusted macros, we disabled normal logging
1156 on the basis that it would fail; for the Exim run-time user, this is not
1157 the case, and it resulted in successful deliveries going unlogged.
1158 Fixed. Reported by Andreas Metzler.
1164 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1165 only prepend for the Resent-* case. Fixes regression introduced in
1166 Exim 4.70 by NM/22 for Bugzilla 607.
1168 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1169 increasing numbers of administrators be bitten by this.
1171 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1173 PP/03 Bugzilla 994: added openssl_options main configuration option.
1175 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1177 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1179 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1181 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1182 without a peer certificate, leading to a segfault because of an
1183 assumption that peers always have certificates. Be a little more
1184 paranoid. Problem reported by Martin Tscholak.
1186 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1187 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1188 NB: ClamAV planning to remove STREAM in "middle of 2010".
1189 CL also introduces -bmalware, various -d+acl logging additions and
1190 more caution in buffer sizes.
1192 PP/09 Implemented reverse_ip expansion operator.
1194 PP/10 Bugzilla 937: provide a "debug" ACL control.
1196 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
1198 PP/12 Bugzilla 973: Implement --version.
1200 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
1202 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
1204 PP/15 Bugzilla 816: support multiple condition rules on Routers.
1206 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
1207 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
1208 ignore trailing whitespace.
1210 JJ/02 prevent non-panic DKIM error from being sent to paniclog
1212 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
1215 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
1216 Notification from Dr Andrew Aitchison.
1218 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
1219 ExtendedDetectionInfo response format.
1220 Notification from John Horne.
1222 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
1225 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
1226 XSL and documented dependency on system catalogs, with examples of how
1229 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
1232 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
1233 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
1234 configuration file which is writeable by the Exim user or group.
1236 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
1237 of configuration files to cover files specified with the -C option if
1238 they are going to be used with root privileges, not just the default
1241 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
1242 option (effectively making it always true).
1244 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
1245 files to be used while preserving root privileges.
1247 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
1248 that rogue child processes cannot use them.
1250 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
1251 run-time user, instead of root.
1253 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
1254 Exim run-time user without dropping privileges.
1256 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
1257 result string, instead of calling string_vformat() twice with the same
1260 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
1261 for other users. Others should always drop root privileges if they use
1262 -C on the command line, even for a whitelisted configure file.
1264 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
1266 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
1272 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
1273 $data_path, and $header_path variables; fixed documentation bugs and
1276 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
1277 exipick to access non-standard spools, including the "frozen" queue
1280 NM/01 Bugzilla 965: Support mysql stored procedures.
1281 Patch from Alain Williams
1283 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
1285 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
1286 Patch from Andreas Metzler
1288 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
1289 Patch from Kirill Miazine
1291 NM/05 Bugzilla 671: Added umask to procmail example.
1293 JJ/03 installed exipick 20100323.0, fixing doc bug
1295 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
1296 directory. Notification and patch from Dan Rosenberg.
1298 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
1300 TK/02 Improve log output when DKIM signing operation fails.
1302 MH/01 Treat the transport option dkim_domain as a colon separated
1303 list, not as a single string, and sign the message with each element,
1304 omitting multiple occurences of the same signer.
1306 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
1307 Bugzilla 985, 986. Patch by Simon Arlott
1309 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
1310 Patch by Simon Arlott
1312 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
1313 MBX locking. Notification from Dan Rosenberg.
1319 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
1321 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
1323 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
1325 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
1327 NM/04 Bugzilla 915: Flag broken perl installation during build.
1333 TK/01 Added patch by Johannes Berg that expands the main option
1334 "spamd_address" if it starts with a dollar sign.
1336 TK/02 Write list of recipients to X-Envelope-Sender header when building
1337 the mbox-format spool file for content scanning (suggested by Jakob
1340 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
1341 (http://www.dcc-servers.net/) support via dccifd. Activated by
1342 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
1344 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
1345 by Mark Daniel Reidel <mr@df.eu>.
1347 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
1348 When building exim an external PCRE library is now needed -
1349 PCRE is a system library on the majority of modern systems.
1350 See entry on PCRE_LIBS in EDITME file.
1352 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
1353 conversation. Added nologin parameter to request.
1354 Patch contributed by Kirill Miazine.
1356 TF/01 Do not log submission mode rewrites if they do not change the address.
1358 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
1360 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
1361 log files in place. Contributed by Roberto Lima.
1363 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
1365 TF/03 Bugzilla 615: When checking the local_parts router precondition
1366 after a local_part_suffix or local_part_prefix option, Exim now
1367 does not use the address's named list lookup cache, since this
1368 contains cached lookups for the whole local part.
1370 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
1371 Robert Millan. Documentation is in experimental-spec.txt.
1373 TF/04 Bugzilla 668: Fix parallel build (make -j).
1375 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
1377 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
1378 Patch provided by Jan Srzednicki.
1380 TF/05 Leading white space used to be stripped from $spam_report which
1381 wrecked the formatting. Now it is preserved.
1383 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
1384 that they are available at delivery time.
1386 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
1388 TF/08 TLS error reporting now respects the incoming_interface and
1389 incoming_port log selectors.
1391 TF/09 Produce a more useful error message if an SMTP transport's hosts
1392 setting expands to an empty string.
1394 NM/06 Bugzilla 744: EXPN did not work under TLS.
1395 Patch provided by Phil Pennock.
1397 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
1398 Patch provided by Richard Godbee.
1400 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
1401 acl_smtp_notquit, added index entry.
1403 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
1404 Patch provided by Eugene Bujak.
1406 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
1407 accept(). Patch provided by Maxim Dounin.
1409 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
1410 Patch provided by Phil Pennock.
1412 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
1414 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
1415 Patch provided by Brad "anomie" Jorsch.
1417 NM/14 Bugzilla 622: Added timeout setting to transport filter.
1418 Patch provided by Dean Brooks.
1420 TK/05 Add native DKIM support (does not depend on external libraries).
1422 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
1423 Patch provided by Graeme Fowler.
1425 NM/16 Bugzilla 851: Documentation example syntax fix.
1427 NM/17 Changed NOTICE file to remove references to embedded PCRE.
1429 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
1432 NM/19 Bugzilla 745: TLS version reporting.
1433 Patch provided by Phil Pennock.
1435 NM/20 Bugzilla 167: bool: condition support.
1436 Patch provided by Phil Pennock.
1438 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
1439 clients. Patch provided by Phil Pennock.
1441 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
1442 Patch provided by Brad "anomie" Jorsch.
1444 NM/23 Bugzilla 687: Fix misparses in eximstats.
1445 Patch provided by Heiko Schlittermann.
1447 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
1448 Patch provided by Heiko Schlittermann.
1450 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1451 plus update to original patch.
1453 NM/26 Bugzilla 799: Documentation correction for ratelimit.
1455 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
1456 Patch provided by David Brownlee.
1458 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
1460 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
1462 NM/30 Bugzilla 888: TLS documentation bugfixes.
1464 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
1466 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
1467 Unlike the original bugzilla I have changed all shell scripts in src tree.
1469 NM/33 Bugzilla 898: Transport filter timeout fix.
1470 Patch by Todd Rinaldo.
1472 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
1473 Patch by Serge Demonchaux.
1475 NM/35 Bugzilla 39: Base64 decode bug fixes.
1476 Patch by Jakob Hirsch.
1478 NM/36 Bugzilla 909: Correct connect() call in dcc code.
1480 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
1482 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
1484 NM/39 Bugzilla 911: Fixed MakeLinks build script.
1490 TK/01 Add preliminary DKIM support. Currently requires a forked version of
1491 ALT-N's libdkim that I have put here:
1492 http://duncanthrax.net/exim-experimental/
1494 Note to Michael Haardt: I had to rename some vars in sieve.c. They
1495 were called 'true' and it seems that C99 defines that as a reserved
1496 keyword to be used with 'bool' variable types. That means you could
1497 not include C99-style headers which use bools without triggering
1498 build errors in sieve.c.
1500 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
1501 as mailq or other aliases. Changed the --help handling significantly
1502 to do whats expected. exim_usage() emits usage/help information.
1504 SC/01 Added the -bylocaldomain option to eximstats.
1506 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
1508 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
1510 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
1516 PH/01 Another patch from the Sieve maintainer.
1518 PH/02 When an IPv6 address is converted to a string for single-key lookup
1519 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
1520 dots are used instead of colons so that keys in lsearch files need not
1521 contain colons. This was done some time before quoting was made available
1522 in lsearch files. However, iplsearch files do require colons in IPv6 keys
1523 (notated using the quote facility) so as to distinguish them from IPv4
1524 keys. This meant that lookups for IP addresses in host lists did not work
1525 for iplsearch lookups.
1527 This has been fixed by arranging for IPv6 addresses to be expressed with
1528 colons if the lookup type is iplsearch. This is not incompatible, because
1529 previously such lookups could never work.
1531 The situation is now rather anomolous, since one *can* have colons in
1532 ordinary lsearch keys. However, making the change in all cases is
1533 incompatible and would probably break a number of configurations.
1535 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
1538 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
1539 conversion specification without a maximum field width, thereby enabling
1540 a rogue spamd server to cause a buffer overflow. While nobody in their
1541 right mind would setup Exim to query an untrusted spamd server, an
1542 attacker that gains access to a server running spamd could potentially
1543 exploit this vulnerability to run arbitrary code as the Exim user.
1545 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
1546 $primary_hostname instead of what libspf2 thinks the hosts name is.
1548 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
1549 a directory entry by the name of the lookup key. Previously, if a
1550 symlink pointed to a non-existing file or a file in a directory that
1551 Exim lacked permissions to read, a lookup for a key matching that
1552 symlink would fail. Now it is enough that a matching directory entry
1553 exists, symlink or not. (Bugzilla 503.)
1555 PH/03 The body_linecount and body_zerocount variables are now exported in the
1558 PH/04 Added the $dnslist_matched variable.
1560 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
1561 This means they are set thereafter only if the connection becomes
1564 PH/06 Added the client_condition to authenticators so that some can be skipped
1565 by clients under certain conditions.
1567 PH/07 The error message for a badly-placed control=no_multiline_responses left
1568 "_responses" off the end of the name.
1570 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
1572 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
1573 (without spaces) instead of just copying the configuration text.
1575 PH/10 Added the /noupdate option to the ratelimit ACL condition.
1577 PH/11 Added $max_received_linelength.
1579 PH/12 Added +ignore_defer and +include_defer to host lists.
1581 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
1582 way in which PCRE > 7.0 is built.
1584 PH/14 Implemented queue_only_load_latch.
1586 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
1587 MAIL command. The effect was to mangle the value on 64-bit systems.
1589 PH/16 Another patch from the Sieve maintainer.
1591 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
1593 PH/18 If a system quota error occurred while trying to create the file for
1594 a maildir delivery, the message "Mailbox is full" was not appended to the
1595 bounce if the delivery eventually timed out. Change 4.67/27 below applied
1596 only to a quota excession during the actual writing of the file.
1598 PH/19 It seems that peer DN values may contain newlines (and other non-printing
1599 characters?) which causes problems in log lines. The DN values are now
1600 passed through string_printing() before being added to log lines.
1602 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
1603 and InterBase are left for another time.)
1605 PH/21 Added message_body_newlines option.
1607 PH/22 Guard against possible overflow in moan_check_errorcopy().
1609 PH/23 POSIX allows open() to be a macro; guard against that.
1611 PH/24 If the recipient of an error message contained an @ in the local part
1612 (suitably quoted, of course), incorrect values were put in $domain and
1613 $local_part during the evaluation of errors_copy.
1619 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
1620 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
1623 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
1624 issue a MAIL command.
1626 PH/02 In an ACL statement such as
1628 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
1630 if a client was not listed at all, or was listed with a value other than
1631 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
1632 the condition was not true (as it should be), so access was not denied.
1633 The bug was that the ! inversion was incorrectly passed on to the second
1634 item. This has been fixed.
1636 PH/03 Added additional dnslists conditions == and =& which are different from
1637 = and & when the dns lookup returns more than one IP address.
1639 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
1640 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
1642 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
1643 FSYNC, which compiles an option called disable_fsync that allows for
1644 bypassing fsync(). The documentation is heavily laced with warnings.
1646 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
1648 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
1649 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
1650 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
1651 including adding "make clean"; (3) Added -fPIC when compiling the test
1652 dynamically loaded module, to get rid of a warning.
1654 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
1655 message fails, move_frozen_messages = true and ignore_bounce_errors_after
1656 = 0s. The bug is otherwise harmless.
1658 PH/07 There was a bug in the dovecot authenticator such that the value of
1659 $auth1 could be overwritten, and so not correctly preserved, after a
1660 successful authentication. This usually meant that the value preserved by
1661 the server_setid option was incorrect.
1663 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
1665 PH/09 Installed PCRE release 7.0.
1667 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
1668 run for batched SMTP input. It is now run at the start of every message
1669 in the batch. While fixing this I discovered that the process information
1670 (output by running exiwhat) was not always getting set for -bs and -bS
1671 input. This is fixed, and it now also says "batched" for BSMTP.
1673 PH/11 Added control=no_pipelining.
1675 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
1676 patch, slightly modified), and move the expansion of helo_data till after
1677 the connection is made in the smtp transport (so it can use these
1680 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1682 PH/14 Added log_selector = +pid.
1684 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1686 PH/16 Add ${if forany and ${if forall.
1688 PH/17 Added dsn_from option to vary the From: line in DSNs.
1690 PH/18 Flush SMTP output before performing a callout, unless control =
1691 no_callout_flush is set.
1693 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1694 was true (the default) a successful delivery failed to delete the retry
1695 item, thus causing premature timeout of the address. The bug is now
1698 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1700 PH/21 Long custom messages for fakedefer and fakereject are now split up
1701 into multiline reponses in the same way that messages for "deny" and
1702 other ACL rejections are.
1704 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1705 with slight modification.
1707 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1708 draft, changing the syntax and factoring some duplicate code".
1710 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1711 for deliveries of the second and subsequent messages over the same SMTP
1714 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1715 ${reduce, with only minor "tidies".
1717 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1719 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1720 expansion side effects.
1722 PH/27 When a message times out after an over-quota error from an Exim-imposed
1723 quota, the bounce message says "mailbox is full". This message was not
1724 being given when it was a system quota that was exceeded. It now should
1727 MH/03 Made $recipients available in local_scan(). local_scan() already has
1728 better access to the recipient list through recipients_list[], but
1729 $recipients can be useful in postmaster-provided expansion strings.
1731 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1732 in the case of a MAIL command with additional options following the
1733 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1734 were accidentally chopped off.
1736 PH/29 SMTP synchronization checks are implemented when a command is read -
1737 there is a check that no more input is waiting when there shouldn't be
1738 any. However, for some commands, a delay in an ACL can mean that it is
1739 some time before the response is written. In this time, more input might
1740 arrive, invalidly. So now there are extra checks after an ACL has run for
1741 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1742 pipelining has not been advertised.
1744 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1746 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1747 returned in the SMTP response when smtp_return_error_details was false.
1748 This has been fixed.
1750 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1751 instead of the C I/O that was originally supplied, because problems were
1752 reported on Solaris.
1754 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1755 Exim which did not show up earlier: it was assuming that a call to
1756 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1757 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1758 was a macro that became an assignment, so it seemed to work. This has
1759 changed to a proper function call with a void return, hence the compile
1760 error. Exim's code has been fixed.
1762 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1765 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1767 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1769 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1770 because it turns out to be too big or there is a timeout) there is no
1771 "Completed" line in the log. When some messages of this type were
1772 selected by exigrep, they were listed as "not completed". Others were
1773 picked up by some special patterns. I have improved the selection
1774 criteria to be more general.
1776 PH/38 The host_find_failed option in the manualroute router can now be set
1777 to "ignore", to completely ignore a host whose IP address cannot be
1778 found. If all hosts are ignored, the behaviour is controlled by the new
1779 host_all_ignored option.
1781 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1782 homing or because of multiple MX records with /mx) generated more than
1783 one IP address, and the following item turned out to be the local host,
1784 all the secondary addresses of the first item were incorrectly removed
1785 from the list, along with the local host and any following hosts (which
1786 is what is supposed to happen).
1788 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1789 whoever called Exim into the -H file. In the case of the daemon it was
1790 behaving confusingly. When first started, it used values for whoever
1791 started the daemon, but after a SIGHUP it used the Exim user (because it
1792 calls itself on a restart). I have changed the code so that it now always
1795 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1796 message are rejected with the same error (e.g. no authentication or bad
1797 sender address), and a DATA command is nevertheless sent (as can happen
1798 with PIPELINING or a stupid MUA), the error message that was given to the
1799 RCPT commands is included in the rejection of the DATA command. This is
1800 intended to be helpful for MUAs that show only the final error to their
1803 PH/42 Another patch from the Sieve maintainer.
1805 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1806 Eximstats - Fixed some broken HTML links and added missing column headers
1808 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1809 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1811 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1813 PH/43 Yet another patch from the Sieve maintainer.
1815 PH/44 I found a way to check for a TCP/IP connection going away before sending
1816 the response to the final '.' that terminates a message, but only in the
1817 case where the client has not sent further data following the '.'
1818 (unfortunately, this is allowed). However, in many cases there won't be
1819 any further data because there won't be any more messages to send. A call
1820 to select() can be used: if it shows that the input is "ready", there is
1821 either input waiting, or the socket has been closed. An attempt to read
1822 the next input character can distinguish the two cases. Previously, Exim
1823 would have sent an OK response which the client would never have see.
1824 This could lead to message repetition. This fix should cure that, at
1825 least in a lot of common cases.
1827 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1828 advertised in response to EHLO.
1834 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
1835 fixed by 4.65/MH/01 (is this a record?) are fixed:
1837 (i) An empty string was always treated as zero by the numeric comparison
1838 operators. This behaviour has been restored.
1840 (ii) It is documented that the numeric comparison operators always treat
1841 their arguments as decimal numbers. This was broken in that numbers
1842 starting with 0 were being interpreted as octal.
1844 While fixing these problems I realized that there was another issue that
1845 hadn't been noticed. Values of message_size_limit (both the global option
1846 and the transport option) were treated as octal if they started with 0.
1847 The documentation was vague. These values are now always treated as
1848 decimal, and I will make that clear in the documentation.
1854 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
1855 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
1858 MH/01 Don't check that the operands of numeric comparison operators are
1859 integers when their expansion is in "skipping" mode (fixes bug
1860 introduced by 4.64-PH/07).
1862 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
1863 child addresses, Exim now panics and dies. Previously, because the count
1864 is held in a short int, deliveries were likely to be lost. As such a
1865 large number of recipients for a single message is ridiculous
1866 (performance will be very, very poor), I have chosen to impose a limit
1867 rather than extend the field.
1873 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
1874 leftover -K file (the existence of which was triggered by #402).
1875 While we were at it, introduced process PID as part of the -K
1876 filename. This should rule out race conditions when creating
1879 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
1880 processing considerably. Previous code took too long for large mails,
1881 triggering a timeout which in turn triggers #401.
1883 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
1884 in the DK code in transports.c. sendfile() is not really portable,
1885 hence the _LINUX specificness.
1887 TF/01 In the add_headers option to the mail command in an Exim filter,
1888 there was a bug that Exim would claim a syntax error in any
1889 header after the first one which had an odd number of characters
1892 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
1893 callout verification, Exim cached a "reject" for the entire domain. This
1894 is correct for most verifications, but it is not correct for a recipient
1895 verification with use_sender or use_postmaster set, because in that case
1896 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
1897 case of MAIL FROM:<> rejection from other early rejections (e.g.
1898 rejection of HELO). When verifying a recipient using a non-null MAIL
1899 address, the cache is ignored if it shows MAIL FROM:<> rejection.
1900 Whatever the result of the callout, the value of the domain cache is
1901 left unchanged (for any other kind of callout, getting as far as trying
1902 RCPT means that the domain itself is ok).
1904 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
1907 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
1908 manifest itself as EPIPE rather than ECONNECT. When tidying away a
1909 session, the daemon ignores ECONNECT errors and logs others; it now
1910 ignores EPIPE as well.
1912 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
1913 (quoted-printable decoding).
1915 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
1916 later the small subsequent patch to fix an introduced bug.
1918 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
1920 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
1922 PH/08 An error is now given if message_size_limit is specified negative.
1924 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
1925 to be given (somewhat) arbitrary names.
1927 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
1930 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
1931 miscellaneous code fixes
1933 PH/10 Added the log_reject_target ACL modifier to specify where to log
1936 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
1937 hostname. This is wrong, because it relates to the incoming message (and
1938 probably the interface on which it is arriving) and not to the outgoing
1939 callout (which could be using a different interface). This has been
1940 changed to use the value of the helo_data option from the smtp transport
1941 instead - this is what is used when a message is actually being sent. If
1942 there is no remote transport (possible with a router that sets up host
1943 addresses), $smtp_active_hostname is used.
1945 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
1946 tweaks were necessary in order to get it to work (see also 21 below):
1947 (a) The code assumed that strncpy() returns a negative number on buffer
1948 overflow, which isn't the case. Replaced with Exim's string_format()
1950 (b) There were several signed/unsigned issues. I just did the minimum
1951 hacking in of casts. There is scope for a larger refactoring.
1952 (c) The code used strcasecmp() which is not a standard C function.
1953 Replaced with Exim's strcmpic() function.
1954 (d) The code set only $1; it now sets $auth1 as well.
1955 (e) A simple test gave the error "authentication client didn't specify
1956 service in request". It would seem that Dovecot has changed its
1957 interface. Fortunately there's a specification; I followed it and
1958 changed what the client sends and it appears to be working now.
1960 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
1963 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
1964 address A is aliased to B and C, where B exists and C does not. Without
1965 -v the output is "A verified" because verification stops after a
1966 successful redirection if more than one address is generated. However,
1967 with -v the child addresses are also verified. Exim was outputting "A
1968 failed to verify" and then showing the successful verification for C,
1969 with its parentage. It now outputs "B failed to verify", showing B's
1970 parentage before showing the successful verification of C.
1972 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
1973 look up a TXT record in a specific list after matching in a combined
1976 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
1977 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
1978 they consult the DNS. I had assumed they would set it the way they
1979 wanted; and indeed my experiments on Linux seem to show that in some
1980 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
1981 To be on the safe side, however, I have now made the interface to
1982 host_find_byname() similar to host_find_bydns(), with an argument
1983 containing the DNS resolver options. The host_find_byname() function now
1984 sets these options at its start, just as host_find_bydns() does. The smtp
1985 transport options dns_qualify_single and dns_search_parents are passed to
1986 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
1987 of host_find_byname() use the default settings of RES_DEFNAMES
1988 (qualify_single) but not RES_DNSRCH (search_parents).
1990 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
1991 spool_read_header() do less string testing, by means of a preliminary
1992 switch on the second character of optional "-foo" lines. (This is
1993 overdue, caused by the large number of possibilities that now exist.
1994 Originally there were few.) While I was there, I also converted the
1995 str(n)cmp tests so they don't re-test the leading "-" and the first
1996 character, in the hope this might squeeze out yet more improvement.
1998 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
1999 flag allowing group syntax was set by the header_syntax check but not
2000 turned off, possible causing trouble later; (2) The flag was not being
2001 set at all for the header_verify test, causing "group"-style headers to
2002 be rejected. I have now set it in this case, and also caused header_
2003 verify to ignore an empty address taken from a group. While doing this, I
2004 came across some other cases where the code for allowing group syntax
2005 while scanning a header line wasn't quite right (mostly, not resetting
2006 the flag correctly in the right place). These bugs could have caused
2007 trouble for malformed header lines. I hope it is now all correct.
2009 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2010 with the "reply" argument non-NULL. The code, however (which originally
2011 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2012 but it didn't always do it. This confused somebody who was copying the
2013 code for some other use. I have removed all the tests.
2015 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2016 feature that was used to support insecure browsers during the U.S. crypto
2017 embargo. It requires special client support, and Exim is probably the
2018 only MTA that supported it -- and would never use it because real RSA is
2019 always available. This code has been removed, because it had the bad
2020 effect of slowing Exim down by computing (never used) parameters for the
2021 RSA_EXPORT functionality.
2023 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2024 authenticator to fail if there's a tab character in the incoming data
2025 (there should never be unless someone is messing about, as it's supposed
2026 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2027 if the connection is using TLS or if the remote IP is the same as the
2028 local IP, and the "valid-client-cert option" if a client certificate has
2031 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
2032 authenticators. This can be used for authorization after authentication
2033 succeeds. (In the case of plaintext, it servers for both authentication
2036 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
2037 if any retry times were supplied.
2039 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
2040 connection, where there is no client IP address to check. In this
2041 situation, the verify now always succeeds.
2043 PH/25 Applied John Jetmore's -Mset patch.
2045 PH/26 Added -bem to be like -Mset, but loading a message from a file.
2047 PH/27 In a string expansion for a processed (not raw) header when multiple
2048 headers of the same name were present, leading whitespace was being
2049 removed from all of them, but trailing whitespace was being removed only
2050 from the last one. Now trailing whitespace is removed from each header
2051 before concatenation. Completely empty headers in a concatenation (as
2052 before) are ignored.
2054 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2055 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2057 PH/29 [Removed. This was a change that I later backed out, and forgot to
2058 correct the ChangeLog entry (that I had efficiently created) before
2059 committing the later change.]
2061 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2062 address errors (4xx response to RCPT) over the same connection as other
2063 messages routed to the same hosts. Such deliveries are always "forced",
2064 so retry times are not inspected. This resulted in far too many retries
2065 for the affected addresses. The effect occurred only when there were more
2066 hosts than the hosts_max_try setting in the smtp transport when it had
2067 the 4xx errors. Those hosts that it had tried were not added to the list
2068 of hosts for which the message was waiting, so if all were tried, there
2069 was no problem. Two fixes have been applied:
2071 (i) If there are any address or message errors in an SMTP delivery, none
2072 of the hosts (tried or untried) are now added to the list of hosts
2073 for which the message is waiting, so the message should not be a
2074 candidate for sending over the same connection that was used for a
2075 successful delivery of some other message. This seems entirely
2076 reasonable: after all the message is NOT "waiting for some host".
2077 This is so "obvious" that I'm not sure why it wasn't done
2078 previously. Hope I haven't missed anything, but it can't do any
2079 harm, as the worst effect is to miss an optimization.
2081 (ii) If, despite (i), such a delivery is accidentally attempted, the
2082 routing retry time is respected, so at least it doesn't keep
2083 hammering the server.
2085 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2086 in ${readsocket because some servers need this prod.
2088 PH/32 Added some extra debug output when updating a wait-xxx database.
2090 PH/33 The hint "could be header name not terminated by colon", which has been
2091 given for certain expansion errors for a long time, was not being given
2092 for the ${if def:h_colon_omitted{... case.
2094 PH/34 The spec says: "With one important exception, whenever a domain list is
2095 being scanned, $domain contains the subject domain." There was at least
2096 one case where this was not true.
2098 PH/35 The error "getsockname() failed: connection reset by peer" was being
2099 written to the panic log as well as the main log, but it isn't really
2100 panic-worthy as it just means the connection died rather early on. I have
2101 removed the panic log writing for the ECONNRESET error when getsockname()
2104 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2105 runs only) independently of the message's sender address. This meant
2106 that, if the 4xx error was in fact related to the sender, a different
2107 message to the same recipient with a different sender could confuse
2108 things. In particualar, this can happen when sending to a greylisting
2109 server, but other circumstances could also provoke similar problems.
2110 I have changed the default so that the retry time for these errors is now
2111 based a combination of the sender and recipient addresses. This change
2112 can be overridden by setting address_retry_include_sender=false in the
2115 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2116 remote server are returned as part of bounce messages. This was not
2117 happening for LMTP over a pipe (the lmtp transport), but now it is the
2118 same for both kinds of LMTP.
2120 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2121 in header lines that were in fact CNAMEs. This is no longer the case.
2123 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2124 and queue runs started by the daemon processed all messages. This has
2125 been fixed so that -R and -S can now usefully be given with -q<time>.
2127 PH/40 Import PCRE release 6.7 (fixes some bugs).
2129 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2131 PH/42 Give an error if -q is specified more than once.
2133 PH/43 Renamed the variables $interface_address and $interface_port as
2134 $received_ip_address and $received_port, to make it clear that these
2135 values apply to message reception, and not to the outgoing interface when
2136 a message is delivered. (The old names remain recognized, of course.)
2138 PH/44 There was no timeout on the connect() call when using a Unix domain
2139 socket in the ${readsocket expansion. There now is.
2141 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2142 be meaningful with "accept".
2144 SC/01 Eximstats V1.43
2145 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2147 SC/02 Eximstats V1.44
2148 Use a glob alias rather than an array ref in the generated
2149 parser. This improves both readability and performance.
2151 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2152 Collect SpamAssassin and rejection statistics.
2153 Don't display local sender or destination tables unless
2154 there is data to show.
2155 Added average volumes into the top table text output.
2157 SC/04 Eximstats V1.46
2158 Collect data on the number of addresses (recipients)
2159 as well as the number of messages.
2161 SC/05 Eximstats V1.47
2162 Added 'Message too big' to the list of mail rejection
2163 reasons (thanks to Marco Gaiarin).
2165 SC/06 Eximstats V1.48
2166 Mainlog lines which have GMT offsets and are too short to
2167 have a flag are now skipped.
2169 SC/07 Eximstats V1.49 (Alain Williams)
2170 Added the -emptyok flag.
2172 SC/08 Eximstats V1.50
2173 Fixes for obtaining the IP address from reject messages.
2175 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2176 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2177 whitesspace changes from 4.64-PH/27
2179 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2182 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2183 are found, allow negative numbers in numeric criteria)
2185 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2187 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2188 to match changes made in 4.64-PH/43
2190 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2192 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2193 "domain" is actually an IP address, and force a failure. This locks out
2194 those revolvers/nameservers that support "A-for-A" lookups, in
2195 contravention of the specifications.
2197 PH/48 When a host name was looked up from an IP address, and the subsequent
2198 forward lookup of the name timed out, the host name was left in
2199 $sender_host_name, contrary to the specification.
2201 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
2202 restricted to single-key lookups, Exim was not diagnosing an error if
2203 * or *@ was used with a query-style lookup.
2205 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
2207 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
2208 long ago, but noone interested enough thought of it. Let's just say that
2209 the "1.1" means that there are some new functions that weren't there at
2210 some point in the past.
2212 PH/51 Error processing for expansion failure of helo_data from an smtp
2213 transport during callout processing was broken.
2215 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
2216 tested/used via the -bh/-bhc/-bs options.
2218 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
2219 bug, fixed in subsequent PCRE releases).
2221 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
2222 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
2224 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
2230 SC/01 Use a glob alias rather than an array ref in eximstats generated
2231 parser. This improves both readability and performance.
2233 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
2234 Don't display local sender or destination tables in eximstats unless
2235 there is data to show.
2236 Added average volumes into the eximstats top table text output.
2238 SC/03 Collect data on the number of addresses (recipients) as well
2239 as the number of messages in eximstats.
2241 TF/01 Correct an error in the documentation for the redirect router. Exim
2242 does (usually) call initgroups() when daemonizing.
2244 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
2245 with consistent privilege compared to when running as a daemon.
2247 TF/03 Note in the spec that $authenticated_id is not set for local
2248 submissions from trusted users.
2250 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
2251 Thanks to Dean Brooks <dean@iglou.com> for the patch.
2253 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
2254 by adding some example configuration directives to the default
2255 configuration file. A little bit of work is required to uncomment the
2256 directives and define how usernames and passwords are checked, but
2257 there is now a framework to start from.
2259 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
2260 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
2261 without this. I don't know how relevant this is to other LDAP libraries.
2263 PH/02 Add the verb name to the "unknown ACL verb" error.
2265 PH/03 Magnus Holmgren's patch for filter_prepend_home.
2267 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
2269 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
2270 directory not expanded when it should be if an expanded home directory
2271 was set for the address (which is overridden by the transport).
2273 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
2276 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
2277 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
2278 because it is too late at that time, and has no effect.
2280 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
2281 security issue with \' (bugzilla #107). I could not use the
2282 PQescapeStringConn() function, because it needs a PGconn value as one of
2285 PH/08 When testing addresses using -bt, indicate those final addresses that
2286 are duplicates that would not cause an additional delivery. At least one
2287 person was confused, thinking that -bt output corresponded to deliveries.
2288 (Suppressing duplicates isn't a good idea as you lose the information
2289 about possibly different redirections that led to the duplicates.)
2291 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
2292 systems where poll() doesn't work, in particular OS X.
2294 PH/10 Added more information to debugging output for retry time not reached.
2296 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
2297 operations in malware.c.
2299 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
2302 PH/13 If write_rejectlog was set false when logging was sent to syslog with
2303 syslog_duplication set false, log lines that would normally be written
2304 both the the main log and to the reject log were not written to syslog at
2307 PH/14 In the default configuration, change the use of "message" in ACL warn
2308 statements to "add_header".
2310 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
2311 not followed by a command (e.g. "seen endif").
2313 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
2314 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
2317 PH/17 Added extra conditions to the default value of delay_warning_condition
2321 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
2322 { match{$h_precedence:}{(?i)bulk|list|junk} } \
2323 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
2326 The Auto-Submitted: and various List- headers are standardised, whereas I
2327 don't think Precedence: ever was.
2329 PH/18 Refactored debugging code in route_finduser() to show more information,
2330 in particular, the error code if getpwnam() issues one.
2332 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
2333 This is apparently needed in addition to the PH/07 change above to avoid
2334 any possible encoding problems.
2336 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
2337 but not after initializing Perl.
2339 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
2340 output them only if debugging. By default they are written stderr,
2341 apparently, which is not desirable.
2343 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
2346 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
2349 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
2351 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
2352 authenticated or an ident call has been made. Suppress the default
2353 values for $authenticated_id and $authenticated_sender (but permit -oMai
2354 and -oMas) when testing with -bh.
2356 PH/24 Re-jigged the order of the tests in the default configuration so that the
2357 tests for valid domains and recipients precede the DNS black list and CSA
2358 tests, on the grounds that those ones are more expensive.
2360 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
2361 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
2362 This bug exists in every version of Exim that I still have, right back to
2365 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
2366 However, an attempt to turn on case-sensitivity in a regex key by
2367 including (?-i) didn't work because the subject string was already
2368 lowercased, and the effects were non-intuitive. It turns out that a
2369 one-line patch can be used to allow (?-i) to work as expected.
2375 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
2376 other effects) broke the use of negated acl sub-conditions.
2378 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
2381 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
2382 "Deny" causes Exim to reject the incoming connection with a 554 error.
2383 Unfortunately, if there is a major crisis, such as a disk failure,
2384 tcp-wrappers gives "deny", whereas what one would like would be some
2385 kind of temporary error. A kludge has been added to help with this.
2386 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
2387 554 error is used if errno is still zero or contains ENOENT (which occurs
2388 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
2391 PH/03 Add -lutil to the default FreeBSD LIBS setting.
2393 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
2394 errors. Otherwise a message that provokes a temporary error (when other
2395 messages do not) can cause a whole host to time out.
2397 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
2398 addresses were routed directly to files or pipes from a redirect router.
2399 File deliveries just didn't batch; pipe deliveries might have suffered
2402 PH/06 A failure to get a lock for a hints database would erroneously always say
2403 "Failed to get write lock", even when it was really a read lock.
2405 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
2406 of 0600. This has been changed to use the value of the lockfile_mode
2407 option (which defaults to 0600).
2409 PH/08 Applied small patch from the Sieve maintainer.
2411 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
2412 folder from quota calculations, a direct delivery into this folder messed
2413 up the contents of the maildirsize file. This was because the regex was
2414 used only to exclude .Trash (or whatever) when the size of the mailbox
2415 was calculated. There was no check that a delivery was happening into an
2416 excluded directory. This bug has been fixed by ignoring all quota
2417 processing for deliveries into excluded directories.
2419 PH/10 Added the maildirfolder_create_regex option to appendfile.
2425 PH/01 The code for finding all the local interface addresses on a FreeBSD
2426 system running IPv6 was broken. This may well have applied to all BSD
2427 systems, as well as to others that have similar system calls. The broken
2428 code found IPv4 interfaces correctly, but gave incorrect values for the
2429 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
2430 that it would not match correctly against @[] and not recognize the IPv6
2433 PH/02 The ipliteral router was not recognizing addresses of the form user@
2434 [ipv6:....] because it didn't know about the "ipv6:" prefix.
2436 PH/03 Added disable_ipv6.
2438 PH/04 Changed $reply_address to use the raw form of the headers instead of the
2439 decoded form, because it is most often used to construct To: headers
2440 lines in autoreplies, and the decoded form may well be syntactically
2441 invalid. However, $reply_address has leading white space removed, and all
2442 newlines turned into spaces so that the autoreply transport does not
2445 PH/05 If group was specified without a user on a router, and no group or user
2446 was specified on a transport, the group from the router was ignored.
2448 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
2449 for visible compile-time settings that can be used to change these
2450 numbers, for those that want even more. Backwards compatibility with old
2451 spool files has been maintained. However, going back to a previous Exim
2452 release will lost any variables that are in spool files.
2454 PH/07 Two small changes when running in the test harness: increase delay when
2455 passing a TCP/IP connection to a new process, in case the original
2456 process has to generate a bounce, and remove special handling of
2457 127.0.0.2 (sic), which is no longer necessary.
2459 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
2460 be the same on different OS.
2462 PH/09 Moved a debug statement in filter processing to avoid a race problem when
2465 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
2466 whether --show-vars was specified or not
2468 JJ/02 exipick: Added support for new ACL variable spool format introduced
2471 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
2472 syntactically invalid From: or Reply-to: line, and a filter used this to
2473 generate an autoreply, and therefore failed to obtain an address for the
2474 autoreply, Exim could try to deliver to a non-existent relative file
2475 name, causing unrelated and misleading errors. What now happens is that
2476 it logs this as a hard delivery error, but does not attempt to create a
2479 PH/11 The exinext utility has a -C option for testing purposes, but although
2480 the given file was scanned by exinext itself; it wasn't being passed on
2481 when Exim was called.
2483 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
2484 an end-of-file indication when reading a command response.
2486 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
2487 compiled. In many other places in Exim, IPv6 addresses are always
2488 recognized, so I have changed this. It also means that IPv4 domain
2489 literals of the form [IPV4:n.n.n.n] are now always recognized.
2491 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
2492 used if the router is not running as root, for example, when verifying at
2493 ACL time, or when using -bh. The debugging output from this situation was
2494 non-existent - all you got was a failure to exec. I have made two
2497 (a) Failures to set uid/gid, the current directory, or a process leader
2498 in a subprocess such as that created by queryprogram now generate
2499 suitable debugging ouput when -d is set.
2501 (b) The queryprogram router detects when it is not running as root,
2502 outputs suitable debugging information if -d is set, and then runs
2503 the subprocess without attempting to change uid/gid.
2505 PH/15 Minor change to Makefile for building test_host (undocumented testing
2508 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
2509 additional section of a DNS packet that returns MX or SRV records.
2510 Instead, it always explicitly searches for A/AAAA records. This avoids
2511 major problems that occur when a DNS server includes only records of one
2512 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
2513 fixed another bug: if SRV records were looked up and the corresponding
2514 address records were *not* found in the additional section, the port
2515 values from the SRV records were lost.
2517 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
2518 using the correct key (the original address) when searching the retry
2519 rules in order to find which one to use for generating the retry hint.
2521 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
2522 adding the default one. Similarly, if it contains a Reply-To: header, the
2523 errors_reply_to option, if set, is not used.
2525 PH/19 When calculating a retry time, Exim used to measure the "time since
2526 failure" by looking at the "first failed" field in the retry record. Now
2527 it does not use this if it is later than than the arrival time of the
2528 message. Instead it uses the arrival time. This makes for better
2529 behaviour in cases where some deliveries succeed, thus re-setting the
2530 "first failed" field. An example is a quota failure for a huge message
2531 when small messages continue to be delivered. Without this change, the
2532 "time since failure" will always be short, possible causing more frequent
2533 delivery attempts for the huge message than are intended.
2534 [Note: This change was subsequently modified - see PH/04 for 4.62.]
2536 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
2537 $1, $2, $3) because the numerical variables can be reset during some
2538 expansion items (e.g. "match"), thereby losing the authentication data.
2540 PH/21 Make -bV show the size of off_t variables so that the test suite can
2541 decide whether to run tests for quotas > 2G.
2543 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
2544 mailbox_size, and mailbox_filecount in the appendfile transport. If a
2545 filecount value is greater than 2G or if a quota value is greater than 2G
2546 on a system where the size of off_t is not greater than 4, a panic error
2549 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
2550 never match. The debug and -bh output now contains an explicit error
2551 message indicating a malformed IPv4 address or mask.
2553 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
2554 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
2555 PH/23 above applies.
2557 PH/25 Do not write to syslog when running in the test harness. The only
2558 occasion when this arises is a failure to open the main or panic logs
2559 (for which there is an explicit test).
2561 PH/26 Added the /no_tell option to "control=freeze".
2563 PH/27 If a host name lookup failed very early in a connection, for example, if
2564 the IP address matched host_lookup and the reverse lookup yielded a name
2565 that did not have a forward lookup, an error message of the form "no IP
2566 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
2567 could be logged. Now it outputs the IP address instead of "NULL".
2569 PH/28 An enabling patch from MH: add new function child_open_exim2() which
2570 allows the sender and the authenticated sender to be set when
2571 submitting a message from within Exim. Since child_open_exim() is
2572 documented for local_scan(), the new function should be too.
2574 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
2575 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
2576 results in an empty string is now treated as unset.
2578 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
2580 PH/31 Added sender_verify_fail logging option.
2582 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
2583 needed by RFC 822 but not by RFC 2822 was commented out. I have now
2584 tidied the source and removed it altogether.
2586 PH/33 When a queue run was abandoned because the load average was too high, a
2587 log line was always written; now it is written only if the queue_run log
2588 selector is set. In addition, the log line for abandonment now contains
2589 information about the queue run such as the pid. This is always present
2590 in "start" and "stop" lines but was omitted from the "abandon" line.
2592 PH/34 Omit spaces between a header name and the colon in the error message that
2593 is given when verify = headers_syntax fails (if there are lots of them,
2594 the message gets confusing).
2596 PH/35 Change the default for dns_check_names_pattern to allow slashes within
2597 names, as there are now some PTR records that contain slashes. This check
2598 is only to protect against broken name servers that fall over on strange
2599 characters, so the fact that it applies to all lookups doesn't matter.
2601 PH/36 Now that the new test suite is complete, we can remove some of the
2602 special code in Exim that was needed for the old test suite. For example,
2603 sorting DNS records because real resolvers return them in an arbitrary
2604 order. The new test suite's fake resolver always returns records in the
2607 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
2608 bounces) except when queue_only is set, to avoid logging races between
2609 the different processes.
2611 PH/38 Panic-die if .include specifies a non-absolute path.
2613 PH/39 A tweak to the "H" retry rule from its user.
2615 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
2616 a label. They prevented compilation on older perls.
2618 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
2619 a warning to be raised on newish perls.
2621 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
2622 on queue. Changes to match documented behaviour of showing count of
2623 messages matching specified criteria.
2625 PH/40 Changed the default ident timeout from 30s to 5s.
2627 PH/41 Added support for the use of login_cap features, on those BSD systems
2628 that have them, for controlling the resources used by pipe deliveries.
2630 PH/42 The content-scanning code uses fopen() to create files in which to put
2631 message data. Previously it was not paying any attention to the mode of
2632 the files. Exim runs with umask(0) because the rest of the code creates
2633 files with open(), and sets the required mode explicitly. Thus, these
2634 files were ending up world-writeable. This was not a big issue, because,
2635 being within the spool directory, they were not world-accessible. I have
2636 created a function called modefopen, which takes an additional mode
2637 argument. It sets umask(777), creates the file, chmods it to the required
2638 mode, then resets the umask. All the relevant calls to fopen() in the
2639 content scanning code have been changed to use this function.
2641 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
2642 to 24 hours. This avoids potential overflow problems when processing G
2643 and H retry rules. I suspect nobody ever tinkers with this value.
2645 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
2647 PH/45 When the plaintext authenticator is running as a client, the server's
2648 challenges are checked to ensure they are valid base64 strings. By
2649 default, the authentication attempt is cancelled if an invalid string is
2650 received. Setting client_ignore_invalid_base64 true ignores these errors.
2651 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
2652 they are received. Thus, the responses can be made to depend on the
2653 challenges. If an invalid string is ignored, an empty string is placed in
2656 PH/46 Messages that are created by the autoreply transport now contains a
2657 References: header, in accordance with RFCs 2822 and 3834.
2659 PH/47 Added authenticated_sender_force to the smtp transport.
2661 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
2663 PH/49 Installed latest patch from the Sieve maintainer.
2665 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
2666 was also set, the appendfile transport was unnecessarily scanning a
2667 directory of message files (e.g. for maildir delivery) to find the count
2668 of files (along with the size), even though it did not need this
2669 information. It now does the scan only if it needs to find either the
2670 size of the count of files.
2672 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
2674 PH/52 Two bugs concerned with error handling when the smtp transport is
2677 (i) Exim was not creating retry information for temporary errors given
2678 for individual recipients after the DATA command when the smtp transport
2679 was used in LMTP mode. This meant that they could be retried too
2680 frequently, and not timed out correctly.
2682 (ii) Exim was setting the flag that allows error details to be returned
2683 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2684 recipients that were returned after the DATA command.
2686 PH/53 This is related to PH/52, but is more general: for any failing address,
2687 when detailed error information was permitted to be returned to the
2688 sender, but the error was temporary, then after the final timeout, only
2689 "retry timeout exceeded" was returned. Now it returns the full error as
2690 well as "retry timeout exceeded".
2692 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2693 do this, and (what is worse) MTAs that accept it.
2695 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2696 will now be deprecated.
2698 PH/56 New os.c-cygwin from the Cygwin maintainer.
2700 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2701 formats (previously only available in exim formats via -bpr, -bpru,
2702 and -bpra. Now also available in native and exiqgrep formats)
2704 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2705 with very large, slow to parse queues
2707 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2709 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2711 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2712 responses to authentication challenges, though it was showing the
2713 challenges; (ii) I've removed the CR characters from the debug output for
2716 PH/58 Allow for the insertion of a newline as well as a space when a string
2717 is turned into more than one encoded-word during RFC 2047 encoding. The
2718 Sieve code now uses this.
2720 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2721 data_4xx, lost_connection, tls_required.
2723 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2724 message was being sent as an SMTP response.
2726 PH/61 Add -l and -k options to exicyclog.
2728 PH/62 When verifying, if an address was redirected to one new address, so that
2729 verification continued, and the new address failed or deferred after
2730 having set something in $address_data, the value of $address_data was not
2731 passed back to the ACL. This was different to the case when no
2732 redirection occurred. The value is now passed back in both cases.
2734 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2735 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2736 use login_cap.h, so on its own it isn't the distinguishing feature. The
2737 new name refers directly to the setclassresources() function.
2739 PH/65 Added configuration files for NetBSD3.
2741 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2743 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2744 is preferred over IPv4.
2746 PH/68 The bounce_return_message and bounce_return_body options were not being
2747 honoured for bounces generated during the reception of non-SMTP messages.
2748 In particular, this applied to messages rejected by the ACL. This bug has
2749 been fixed. However, if bounce_return_message is true and bounce_return_
2750 body is false, the headers that are returned for a non-SMTP message
2751 include only those that have been read before the error was detected.
2752 (In the case of an ACL rejection, they have all been read.)
2754 PH/69 The HTML version of the specification is now built in a directory called
2755 spec_html instead of spec.html, because the latter looks like a path with
2756 a MIME-type, and this confuses some software.
2758 PH/70 Catch two compiler warnings in sieve.c.
2760 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2761 function verify_get_ident() calls ip_connect() to connect a socket, but
2762 if the "connect()" function timed out, ip_connect() used to close the
2763 socket. However, verify_get_ident() also closes the socket later, and in
2764 between Exim writes to the log, which may get opened at this point. When
2765 the socket was closed in ip_connect(), the log could get the same file
2766 descriptor number as the socket. This naturally causes chaos. The fix is
2767 not to close the socket in ip_connect(); the socket should be closed by
2768 the function that creates it. There was only one place in the code where
2769 this was missing, in the iplookup router, which I don't think anybody now
2770 uses, but I've fixed it anyway.
2772 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2773 well as to direct DNS lookups. Otherwise the handling of names in host
2774 lists is inconsistent and therefore confusing.
2780 PH/01 Two changes to the default runtime configuration:
2782 (1) Move the checks for relay_from_hosts and authenticated clients from
2783 after to before the (commented out) DNS black list checks.
2785 (2) Add control=submission to the relay_from_hosts and authenticated
2786 clients checks, on the grounds that messages accepted by these
2787 statements are most likely to be submissions.
2789 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2791 (1) Generate an error if the third argument for the ${prvs expansion is
2794 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2797 (3) Reset the variables that are obtained from the first argument of
2798 ${prvscheck and used in the second argument before leaving the code,
2799 because their memory is reclaimed, so using them afterwards may do
2802 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2803 one (it's much easier than Tom thought :-).
2805 (5) Because of (4), we can now allow for the use of $prvscheck_result
2806 inside the third argument.
2808 PH/03 For some reason, the default setting of PATH when running a command from
2809 a pipe transport was just "/usr/bin". I have changed it to
2812 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2813 anything to be listed in the output from -bV.
2815 PH/05 When a filter generated an autoreply, the entire To: header line was
2816 quoted in the delivery log line, like this:
2818 => >A.N.Other <ano@some.domain> <original@ddress> ...
2820 This has been changed so that it extracts the operative address. There
2821 may be more than one such address. If so, they are comma-separated, like
2824 => >ano@some.domain,ona@other.domain <original@ddress> ...
2826 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2827 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2828 not being looked up in the rDNS to get a host name, Exim was showing the
2829 IP address twice in Received: lines, even though the IP addresses were
2830 identical. For example:
2832 Received: from [1.2.3.4] (helo=[1.2.3.4])
2834 However, if the real host name was known, it was omitting the HELO data
2835 if it matched the actual IP address. This has been tidied up so that it
2836 doesn't show the same IP address twice.
2838 PH/07 When both +timestamp and +memory debugging was on, the value given by
2839 $tod_xxx expansions could be wrong, because the tod_stamp() function was
2840 called by the debug printing, thereby overwriting the timestamp buffer.
2841 Debugging no longer uses the tod_stamp() function when +timestamp is set.
2843 PH/08 When the original message was included in an autoreply transport, it
2844 always said "this is a copy of the message, including all the headers",
2845 even if body_only or headers_only was set. It now gives an appropriate
2848 PH/09 Applied a patch from the Sieve maintainer which:
2850 o fixes some comments
2851 o adds the (disabled) notify extension core
2852 o adds some debug output for the result of if/elsif tests
2853 o points to the current vacation draft in the documentation
2854 and documents the missing references header update
2858 o fixes a bug in processing the envelope test (when testing
2859 multiple envelope elements, the last element determinted the
2862 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
2863 Electronic Mail") by including:
2865 Auto-submitted: auto-generated
2867 in the messages that it generates (bounce messages and others, such as
2868 warnings). In the case of bounce messages for non-SMTP mesages, there was
2869 also a typo: it was using "Auto_submitted" (underscore instead of
2870 hyphen). Since every message generated by Exim is necessarily in response
2871 to another message, thes have all been changed to:
2873 Auto-Submitted: auto-replied
2875 in accordance with these statements in the RFC:
2877 The auto-replied keyword:
2879 - SHOULD be used on messages sent in direct response to another
2880 message by an automatic process,
2882 - MUST NOT be used on manually-generated messages,
2884 - MAY be used on Delivery Status Notifications (DSNs) and Message
2885 Disposition Notifications (MDNs),
2887 - MUST NOT be used on messages generated by automatic or periodic
2888 processes, except for messages which are automatic responses to
2891 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
2892 to the default Received: header definition.
2894 PH/12 Added log selector acl_warn_skipped (default on).
2896 PH/13 After a successful wildlsearch lookup, discard the values of numeric
2897 variables because (a) they are in the wrong storage pool and (b) even if
2898 they were copied, it wouldn't work properly because of the caching.
2900 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
2901 checking when decoding. Apparently there are clients that generate
2902 overlong encoded strings. Why am I not surprised?
2904 PH/15 If the first argument of "${if match_address" was not empty, but did not
2905 contain an "@" character, Exim crashed. Now it writes a panic log message
2906 and treats the condition as false.
2908 PH/16 In autoreply, treat an empty string for "once" the same as unset.
2910 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
2911 extension "envelope-auth". The code is finished and in agreement with
2912 other implementations, but there is no documentation so far and in fact,
2913 nobody wrote the draft yet. This extension is currently #undef'ed, thus
2914 not changing the active code.
2916 Print executed "if" and "elsif" statements when debugging is used. This
2917 helps a great deal to understand what a filter does.
2919 Document more things not specified clearly in RFC3028. I had all this
2920 sorted out, when out of a sudden new issues came to my mind. Oops."
2922 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
2925 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
2926 canonical form (as documented). However, after a host name lookup from
2927 the IP address, check_host() was doing a simple string comparison with
2928 addresses acquired from the DNS when checking that the found name did
2929 have the original IP as one of its addresses. Since any found IPv6
2930 addresses are likely to be in abbreviated form, the comparison could
2931 fail. Luckily, there already exists a function for doing the comparison
2932 by converting both addresses to binary, so now that is used instead of
2933 the text comparison.
2935 PH/20 There was another similar case to PH/19, when a complete host name was
2936 given in a host list; looking up its IP address could give an abbreviated
2937 form, whereas the current host's name might or might not be abbreviated.
2938 The same fix has been applied.
2944 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
2945 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
2948 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
2949 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
2951 PH/03 Typo: missing ".o" in src/pcre/Makefile.
2953 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
2954 header line, restrict the check to what is listed in RFCs 2369 and 2929.
2955 Also, for "Auto-Submitted", treat anything other than "no" as
2956 non-personal, in accordance with RFC 3834. (Previously it treated
2957 anything starting "auto-" as non-personal.)
2959 TF/01 The control=submission/name=... option had a problem with syntax
2960 errors if the name included a slash character. The /name= option
2961 now slurps the rest of the string, so it can include any characters
2962 but it must come last in the list of options (after /sender_retain
2965 PH/05 Some modifications to the interface to the fake nameserver for the new
2973 TK/01 Added the "success_on_redirect" address verification option. See
2974 NewStuff for rationale and an example.
2976 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
2978 PH/02 Patch to exigrep to allow it to work on syslog lines.
2980 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
2981 fread() to skip over the body file's header line, because in Cygwin the
2982 header line is locked and is inaccessible.
2984 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
2985 co-exist for some time) to make it clear that it is the Exim ID that is
2986 referenced, not the Message-ID: header line.
2988 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
2989 string_format() function, because snprintf() does not exist on all
2992 PH/06 The use of forbid_filter_existstest now also locks out the use of the
2993 ${stat: expansion item.
2995 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
2996 protocol synchronization error", to keep the pedants happy.
2998 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
2999 well as for IRIX systems, when gcc is being used. See the host.c source
3002 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3004 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3007 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
3008 transport and to the smtp transport in LMTP mode.
3010 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
3012 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
3013 run a filter in a subprocess. This could lead to confusion in subsequent
3014 lookups in the parent process. There should also be a search_tidyup() at
3015 the end of the subprocess.
3017 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
3018 only if the host matched helo_try_verify_hosts, which caused the
3019 verification to occur when the EHLO/HELO command was issued. The ACL just
3020 tested the remembered result. Now, if a previous verification attempt has
3021 not happened, "verify = helo" does it there and then.
3023 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
3025 TK/03 Fix log output including CR from clamd.
3027 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
3028 exist provoked a memory error which could cause a segfault.
3030 PH/15 Installed PCRE 6.2
3032 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
3034 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
3035 of the problem. Specifically, suggested +O2 rather than +O1 for the
3038 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
3040 PH/20 If a delivery was routed to a non-standard port by means of an SRV
3041 record, the port was not correctly logged when the outgoing_port log
3042 selector was set (it logged the transort's default port).
3044 PH/21 Added support for host-specific ports to manualroute, queryprogram,
3045 fallback_hosts, and "hosts" in the smtp transport.
3047 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
3048 host errors such as "Connection refused".
3050 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
3051 authentication with radiusclient 0.4.9:
3053 - Error returned from rc_read_config was caught wrongly
3054 - Username/password not passed on to radius server due to wrong length.
3056 The presumption is that some radiusclient API changes for 4.51/PH/17
3057 were not taken care of correctly. The code is still untested by me (my
3058 Linux distribution still has 0.3.2 of radiusclient), but it was
3059 contributed by a Radius user.
3061 PH/24 When doing a callout, the value of $domain wasn't set correctly when
3062 expanding the "port" option of the smtp transport.
3064 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
3065 while reading a MIME header. Thanks to Tom Hughes for a patch.
3067 PH/24 Include config.h inside local_scan.h so that configuration settings are
3070 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
3071 that in an ACL for RCPT (for example), you can examine exactly what was
3074 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
3075 commands, but it was not correctly comparing the address with the actual
3076 client host address. Thus, it would show the EHLO address in Received:
3077 header lines when this was not necessary.
3079 PH/27 Added the % operator to ${eval:}.
3081 PH/28 Exim tries to create and chdir to its spool directory when it starts;
3082 it should be ignoring failures (because with -C, for example, it has lost
3083 privilege). It wasn't ignoring creation failures other than "already
3086 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
3089 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
3090 because an input line was too long, either on its own, or by virtue of
3091 too many continuations, the temporary file was not being removed, and the
3092 return code was incorrect.
3094 PH/31 Missing "BOOL" in function definition in filtertest.c.
3096 PH/32 Applied Sieve patches from the maintainer.
3098 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
3100 PH/33 Added "verify = not_blind".
3102 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
3103 Local/Makefile (with some defaults set). These are used in built scripts
3104 such as exicyclog, but they have never been used in the exim_install
3105 script (though there are many overriding facilities there). I have
3106 arranged that the exim_install script now takes note of these two
3109 PH/35 Installed configuration files for Dragonfly.
3111 PH/36 When a locally submitted message by a trusted user did not contain a
3112 From: header, and the sender address was obtained from -f or from an SMTP
3113 MAIL command, and the trusted user did not use -F to supply a sender
3114 name, $originator_name was incorrectly used when constructing a From:
3115 header. Furthermore, $originator_name was used for submission mode
3116 messages from external hosts without From: headers in a similar way,
3117 which is clearly wrong.
3119 PH/37 Added control=suppress_local_fixups.
3121 PH/38 When log_selector = +received_sender was set, and the addition of the
3122 sender made the log line's construction buffer exactly full, or one byte
3123 less than full, an overflow happened when the terminating "\n" was
3126 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
3127 when the result of a list match is failure because a DNS lookup failed.
3129 PH/40 RM_COMMAND is now used in the building process.
3131 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
3132 the "build-* directories that it finds.
3134 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
3135 address in a domain literal was a prefix of an interface address.
3137 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
3138 when verifying a sender address, unless rewrite_headers is false.
3140 PH/44 Wrote a long comment about why errors_to addresses are verified as
3141 recipients, not senders.
3143 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
3144 the ratelimit ACL was added.
3146 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
3148 PH/46 Added extra information about PostgreSQL errors to the error string.
3150 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
3151 avoiding the need to install special zones in a real server. This is
3152 backwards compatible; if it can't find the fake resolver, it drops back.
3153 Thus, both old and new test suites can be run.
3155 TF/02 Added util/ratelimit.pl
3157 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
3158 clock is set back in time.
3160 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
3161 Candler <B.Candler@pobox.com>.
3163 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
3164 OK for addresses that are the result of redirections.
3166 PH/48 A number of further additions for the benefit of the new test suite,
3167 including a fake gethostbyname() that interfaces to the fake DNS resolver
3170 TF/06 The fix for widen_domains has also been applied to qualify_single and
3171 search_parents which are the other dnslookup options that can cause
3174 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
3177 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
3179 TF/07 Exim produced the error message "an SRV record indicated no SMTP
3180 service" if it encountered an MX record with an empty target hostname.
3181 The message is now "an MX or SRV record indicated no SMTP service".
3183 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
3184 if the DNS of the sending site is misconfigured. This is quite a
3185 common situation. This change restores the behaviour of treating a
3186 helo verification defer as a failure.
3188 PH/51 If self=fail was set on a router, the bounce message did not include the
3189 actual error message.
3195 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
3197 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
3198 command itself ended in error, the underlying message about the transport
3199 filter timeout was being overwritten with the pipe command error. Now the
3200 underlying error message should be appended to the second error message.
3202 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
3204 PH/02 Reduce the amount of output that "make" produces by default. Full output
3205 can still be requested.
3207 PH/03 The warning log line about a condition test deferring for a "warn" verb
3208 was being output only once per connection, rather than after each
3209 occurrence (because it was using the same function as for successful
3210 "warn" verbs). This seems wrong, so I have changed it.
3212 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
3213 it should not have, which might have caused a crash in the right
3214 circumstances, but probably never did.
3216 PH/04 Installed a modified version of Tony Finch's patch to make submission
3217 mode fix the return path as well as the Sender: header line, and to
3218 add a /name= option so that you can make the user's friendly name appear
3221 TF/03 Added the control = fakedefer ACL modifier.
3223 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
3224 Mark Lowes for thorough testing.
3226 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
3228 TK/03 Merged latest SRS patch from Miles Wilton.
3230 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
3231 with the definition in sysexits.h (which is #included earlier).
3232 Fortunately, Exim does not actually use EX_OK. The code used to try to
3233 preserve the sysexits.h value, by assumimg that macro definitions were
3234 scanned for macro replacements. I have been disabused of this notion,
3235 so now the code just undefines EX_OK before #including unistd.h.
3237 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
3238 in the smtp transport. When a block could not be written in a single
3239 write() function, the timeout was being re-applied to each part-write.
3240 This seems wrong - if the receiver was accepting one byte at a time it
3241 would take for ever. The timeout is now adjusted when this happens. It
3242 doesn't have to be particularly precise.
3244 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
3245 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
3247 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
3248 without a domain if the check to <postmaster@domain> fails.
3250 SC/01 Eximstats: added -xls and the ability to specify output files
3251 (patch written by Frank Heydlauf).
3253 SC/02 Eximstats: use FileHandles for outputing results.
3255 SC/03 Eximstats: allow any combination of xls, txt, and html output.
3257 SC/04 Eximstats: fixed display of large numbers with -nvr option
3259 SC/05 Eximstats: fixed merging of reports with empty tables.
3261 SC/06 Eximstats: added the -include_original_destination flag
3263 SC/07 Eximstats: removed tabs and trailing whitespace.
3265 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
3267 TK/06 MBOX spool code: Add real "From " MBOX separator line
3268 so the .eml file is really in mbox format (even though
3269 most programs do not really care). Patch from Alex Miller.
3271 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
3272 The latter is generated from $received_to and is only set if the
3273 message has one envelope recipient. SA can use these headers,
3274 obviously out-of-the-box. Patch from Alex Miller.
3276 PH/08 The ${def test on a variable was returning false if the variable's
3277 value was "0", contrary to what the specification has always said!
3278 The result should be true unless the variable is empty.
3280 PH/09 The syntax error of a character other than { following "${if
3281 def:variable_name" (after optional whitespace) was not being diagnosed.
3282 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
3283 accidental colon was present, for example, could give incorrect results.
3285 PH/10 Tidied the code in a number of places where the st_size field of a stat()
3286 result is used (not including appendfile, where other changes are about
3289 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
3290 This involved changing a lot of size variables from int to off_t. It
3291 should work with maildirs and everything.
3293 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
3294 spamd dying while we are connected to it.
3296 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
3299 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
3300 function for BDB 4.3.
3302 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
3304 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
3305 the sources for PCRE have been re-arranged and more files are now
3308 PH/15 The code I had for printing potentially long long variables in PH/11
3309 above was not the best (it lost precision). The length of off_t variables
3310 is now inspected at build time, and an appropriate printing format (%ld
3311 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
3312 to be "long long int" or "long int". This is needed for the internal
3313 formatting function string_vformat().
3315 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
3316 the configuration file to be ":syslog", then the script "guesses" where
3317 the logs files are, rather than using the compiled in default. In our
3318 case the guess is not the same as the compiled default, so the script
3319 suddenly stopped working when I started to use syslog. The patch checks
3320 to see if log_file_path is "". If so, it attempts to read it from exim
3321 with no configuration file to get the compiled in version, before it
3322 falls back to the previous guessing code."
3324 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
3325 implementing BATV in an Exim configuration. See NewStuff for the gory
3328 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
3329 Makefile that are specific to HP-UX.
3331 PH/18 If the "use_postmaster" option was set for a recipient callout together
3332 with the "random" option, the postmaster address was used as the MAIL
3333 FROM address for the random test, but not for the subsequent recipient
3334 test. It is now used for both.
3336 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
3337 patch removes a few documentation additions to RFC 3028, because the
3338 latest draft now contains them. It adds the new en;ascii-case comparator
3339 and a new error check for 8bit text in MIME parts. Comparator and
3340 require names are now matched exactly. I enabled the subaddress
3341 extension, but it is not well tested yet (read: it works for me)."
3343 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
3344 rework some of the code of TK/09 above to avoid the hardwired use of
3345 "%lld" and "long long". Replaced the call to snprintf() with a call to
3348 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
3349 records point to non-existent hosts", "retry timeout exceeded", and
3350 "retry time not reached for any host after a long failure period".
3352 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
3353 experimental DomainKeys support:
3355 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
3356 (2) On an error such as an illegally used "control", the wrong name for
3357 the control was given.
3359 These problems did NOT occur unless DomainKeys support was compiled.
3361 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
3363 PH/24 Added ${if match_ip condition.
3365 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
3366 databases so that it will be absolutely obvious if a crash occurs in the
3367 DB library. This is a regular occurrence (often caused by mis-matched
3370 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
3371 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
3372 picked up on a user's system that detects such things. There doesn't seem
3373 to be a gcc warning option for this - only an attribute that has to be
3374 put on the function's prototype. It seems that in Fedora Core 4 they have
3375 set this on a number of new functions. No doubt there will be more in due
3378 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
3379 specify a transport. However, if an address that was verified by such a
3380 router was the subject of a callout, Exim crashed because it tried to
3381 read the rcpt_include_affixes from the non-existent transport. Now it
3382 just assumes that the setting of that option is false. This bug was
3383 introduced by 4.51/PH/31.
3385 PH/28 Changed -d+all to exclude +memory, because that information is very
3386 rarely of interest, but it makes the output a lot bigger. People tend to
3387 do -d+all out of habit.
3389 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
3390 code in os-type was giving problems when libc.so lives in lib64, like on
3393 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
3394 aren't the modern standard, and it seems that some systems' include files
3395 don't always have them. Exim was already checking for some of the newer
3396 ones like T_AAAA, and defining it itself. I've added checks for all the
3397 record types that Exim uses.
3399 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
3400 not automatically generating a new one, as it is supposed to. This
3401 prevented TLS from working. If the file did exist, but contained invalid
3402 data, a new version was generated, as expected. It was only the case of a
3403 non-existent file that was broken.
3405 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
3406 with a change in libdomainkeys > 0.64.
3408 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
3409 from DNS. If the selector record carries the flag, it now has
3410 precedence over the domain-wide flag.
3412 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
3414 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
3415 the use of a port name that isn't defined in /etc/services) occurred, the
3416 message was deferred as in a normal delivery, and thus remained on the
3417 spool, instead of being failed because of the mua_wrapper setting. This
3418 is now fixed, and I tidied up some of the mua_wrapper messages at the
3421 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
3422 the messages in a hash of arrays rather than using individual hashes.
3423 This is a bit cleaner and results in dramatic memory savings, albeit
3424 at a slight CPU cost.
3426 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
3427 as requested by Marc Sherman.
3429 SC/10 Eximstats: added histograms for user specified patterns as requested
3432 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
3434 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
3435 fopen() in the content-scanning modules that did not already have it.
3441 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
3442 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
3444 TK/02 Fix ACL "control" statement not being available in MIME ACL.
3446 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
3448 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
3449 to test Sieve filters that use "vacation".
3451 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
3452 that changes the way the GnuTLS parameters are stored in the cache file.
3453 The new format can be generated externally. For backward compatibility,
3454 if the data in the cache doesn't make sense, Exim assumes it has read an
3455 old-format file, and it generates new data and writes a new file. This
3456 means that you can't go back to an older release without removing the
3459 PH/03 A redirect router that has both "unseen" and "one_time" set does not
3460 work if there are any delivery delays because "one_time" forces the
3461 parent to be marked "delivered", so its unseen clone is never tried
3462 again. For this reason, Exim now forbids the simultaneous setting of
3465 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
3466 redirected to themselves ("homonym" addresses). Read the long ChangeLog
3467 entry if you want to know the details. The fix, however, neglected to
3468 consider the case when local delivery batching is involved. The test for
3469 "previously delivered" was not happening when checking to see if an
3470 address could be batched with a previous (undelivered) one; under
3471 certain circumstances this could lead to multiple deliveries to the same
3474 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
3475 in its include files, and this causes problems building Exim.
3477 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
3478 header_syntax) but Exim was just ignoring anything given after a slash.
3479 In particular, this caused confusion with an attempt to use "verify =
3480 reverse_host_lookup/defer_ok". An error is now given when options are
3481 supplied for verify items that do not have them. (Maybe reverse_host_
3482 lookup should have a defer_ok option, but that's a different point.)
3484 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
3485 defined by RFC 821) to 2048, because there were problems with some AUTH
3486 commands, and RFC 1869 says the size should be increased for extended
3487 SMTP commands that take arguments.
3489 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
3492 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
3493 "unknown" error; now it says that the functionality isn't in the binary.
3495 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
3496 an address' error message when a string expansion fails (syntax or
3497 whatever). Otherwise the password may appear in the log. Following change
3498 PH/42 below, there is no longer a chance of it appearing in a bounce
3501 PH/11 Installed exipick version 20050225.0 from John Jetmore.
3503 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
3504 of its addresses was ever tried. (Bugzilla bug #2.)
3506 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
3507 the result incorrectly in the debug output. (It correctly added a newline
3508 to what was transported.)
3510 TF/01 Added $received_time.
3512 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
3513 commented out examples of how to interface to a virus scanner and to
3514 SpamAssassin. Also added commented examples of av_scanner and
3515 spamd_address settings.
3517 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
3518 and controls are allowed in which ACLs. There were a couple of minor
3519 errors. Some of the entries in the conditions table (which is a table of
3520 where they are NOT allowed) were getting very unwieldy; rewrote them as a
3521 negation of where the condition IS allowed.
3523 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
3525 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
3526 header file does not have a version number, so I've had to invent a new
3527 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
3528 API. The code is untested by me (my Linux distribution still has 0.3.2 of
3529 radiusclient), but it was contributed by a Radius user.
3531 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
3532 files or directories, for OpenSSL.
3534 PH/19 When an Exim process that is running as root has to create an Exim log
3535 file, it does so in a subprocess that runs as exim:exim so as to get the
3536 ownership right at creation (otherwise, other Exim processes might see
3537 the file with the wrong ownership). There was no test for failure of this
3538 fork() call, which would lead to the process getting stuck as it waited
3539 for a non-existent subprocess. Forks do occasionally fail when resources
3540 run out. I reviewed all the other calls to fork(); they all seem to check
3543 PH/20 When checking for unexpected SMTP input at connect time (before writing
3544 the banner), Exim was not dealing correctly with a non-positive return
3545 from the read() function. If the client had disconnected by this time,
3546 the result was a log entry for a synchronization error with an empty
3547 string after "input=" when read() returned zero. If read() returned -1
3548 (an event I could not check), uninitialized data bytes were printed.
3549 There were reports of junk text (parts of files, etc) appearing after
3552 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
3554 PH/22 Added support for macro redefinition, and (re)definition in between
3555 driver and ACL definitions.
3557 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
3558 forgetting to use the resulting value; it was using the unexpanded value.
3560 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
3561 hadn't been configured. The fix is from Juergen Kreileder, who
3562 understands it better than I do:
3564 "Here's what I see happening with three configured cyrus_sasl
3565 authenticators configured (plain, login, cram-md5):
3567 On startup auth_cyrus_sasl_init() gets called for each of these.
3568 This means three calls to sasl_listmech() without a specified mech_list.
3569 => SASL tests which mechs of all available mechs actually work
3570 => three warnings about OTP not working
3571 => the returned list contains: plain, login, cram-md5, digest-md5, ...
3573 With the patch, sasl_listmech() also gets called three times. But now
3574 SASL's mech_list option is set to the server_mech specified in the the
3575 authenticator. Or in other words, the answer from sasl_listmech()
3576 gets limited to just the mech you're testing for (which is different
3578 => the return list contains just 'plain' or 'login', 'cram-md5' or
3579 nothing depending on the value of ob->server_mech.
3581 I've just tested the patch: Authentication still works fine,
3582 unavailable mechs specified in the exim configuration are still
3583 caught, and the auth.log warnings about OTP are gone."
3585 PH/25 When debugging is enabled, the contents of the command line are added
3586 to the debugging output, even when log_selector=+arguments is not
3589 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
3590 answer is "GNU", and only if the return is "GNU/something" is the answer
3593 PH/27 $acl_verify_message is now set immediately after the failure of a
3594 verification in an ACL, and so is available in subsequent modifiers. In
3595 particular, the message can be preserved by coding like this:
3597 warn !verify = sender
3598 set acl_m0 = $acl_verify_message
3600 Previously, $acl_verify_message was set only while expanding "message"
3601 and "log_message" when a very denied access.
3603 PH/28 Modified OS/os.c-Linux with
3605 -#ifndef OS_LOAD_AVERAGE
3606 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
3608 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
3609 nomenclature these days.)
3611 PH/29 Installed patch from the Sieve maintainer that adds the options
3612 sieve_useraddress and sieve_subaddress to the redirect router.
3614 PH/30 In these circumstances:
3615 . Two addresses routed to the same list of hosts;
3616 . First host does not offer TLS;
3617 . First host accepts first address;
3618 . First host gives temporary error to second address;
3619 . Second host offers TLS and a TLS session is established;
3620 . Second host accepts second address.
3621 Exim incorrectly logged both deliveries with the TLS parameters (cipher
3622 and peerdn, if requested) that were in fact used only for the second
3625 PH/31 When doing a callout as part of verifying an address, Exim was not paying
3626 attention to any local part prefix or suffix that was matched by the
3627 router that accepted the address. It now behaves in the same way as it
3628 does for delivery: the affixes are removed from the local part unless
3629 rcpt_include_affixes is set on the transport.
3631 PH/32 Add the sender address, as F=<...>, to the log line when logging a
3632 timeout during the DATA phase of an incoming message.
3634 PH/33 Sieve envelope tests were broken for match types other than :is. I have
3635 applied a patch sanctioned by the Sieve maintainer.
3637 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
3638 the uid or gid is negative. A case of a negative gid caused this to be
3639 noticed. The fix allows for either to be negative.
3641 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
3642 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
3645 PH/36 The change PH/12 above was broken. Fixed it.
3647 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
3648 the grounds that routing the same address twice would always produce the
3649 same answer. This might have been true once, but it is certainly no
3650 longer true now. Routing a child address may depend on the previous
3651 routing that produced that child. Some complicated redirection strategies
3652 went wrong when messages had multiple recipients, and made Exim's
3653 behaviour dependent on the order in which the addresses were given.
3655 I have moved the duplicate checking until after the routing is complete.
3656 Exim scans the addresses that are assigned to local and remote
3657 transports, and removes any duplicates. This means that more work will be
3658 done, as duplicates will always all be routed, but duplicates are
3659 presumably rare, so I don't expect this is of any significance.
3661 For deliveries to pipes, files, and autoreplies, the duplicate checking
3662 still happens during the routing process, since they are not going to be
3665 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
3666 It corrects a timeout issue with spamd. This is Ian's comment: "The
3667 background is that sometimes spamd either never reads data from a
3668 connection it has accepted, or it never writes response data. The exiscan
3669 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
3670 blindly assumes that writes won't block so it may never time out."
3672 PH/39 Allow G after quota size as well as K and M.
3674 PH/40 The value set for $authenticated_id in an authenticator may not contain
3675 binary zeroes or newlines because the value is written to log lines and
3676 to spool files. There was no check on this. Now the value is run through
3677 the string_printing() function so that such characters are converted to
3678 printable escape sequences.
3680 PH/41 $message_linecount is a new variable that contains the total number of
3681 lines in the message. Compare $body_linecount, which is the count for the
3684 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3685 bounce and delay warning messages, except in certain special cases, which
3688 (a) An SMTP error message from a remote host;
3689 (b) A message specified in a :fail: redirection;
3690 (c) A message specified in a "fail" command in a system filter;
3691 (d) A message specified in a FAIL return from the queryprogram router;
3692 (e) A message specified by the cannot_route_message router option.
3694 In these cases only, Exim does include the error details in bounce and
3695 warning messages. There are also a few cases where bland messages such
3696 as "unrouteable address" or "local delivery error" are given.
3698 PH/43 $value is now also set for the "else" part of a ${run expansion.
3700 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3701 being worked on, but at least Exim now implements the latest version to
3704 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3705 process to complete was treated as a delivery failure, a timeout while
3706 writing the message to the pipe was logged, but erroneously treated as a
3707 successful delivery. Such timeouts include transport filter timeouts. For
3708 consistency with the overall process timeout, these timeouts are now
3709 treated as errors, giving rise to delivery failures by default. However,
3710 there is now a new Boolean option for the pipe transport called
3711 timeout_defer, which, if set TRUE, converts the failures into defers for
3712 both kinds of timeout. A transport filter timeout is now identified in
3715 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3716 systems where "make" and "gmake" are different, calling "gmake" at top
3717 level broke things. I've arranged for the value of $(MAKE) to be passed
3718 from the Makefile to this script so that it can call the same version of
3722 A note about Exim versions 4.44 and 4.50
3723 ----------------------------------------
3725 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3726 changes of various kinds. As a consequence, a big documentation update was
3727 needed. This delayed the release for rather longer than seemed good, especially
3728 in the light of a couple of (minor) security issues. Therefore, the changes
3729 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3730 release. So 4.44 and 4.50 are in effect two different branches that both start
3733 I have left the 4.50 change log unchanged; it contains all the changes since
3734 4.43. The change log for 4.44 is below; many of its items are identical to
3735 those for 4.50. This seems to be the most sensible way to preserve the
3736 historical information.
3742 1. Minor wording change to the doc/README.SIEVE file.
3744 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3745 computation of the current number of files was incorrect.
3747 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3748 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3751 4. Give more explanation in the error message when the command for a transport
3752 filter fails to execute.
3754 5. There are several places where Exim runs a non-Exim command in a
3755 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3756 was being done only for the command run by the queryprogram router. It is
3757 now done for all such subprocesses. The other cases are: ${run, transport
3758 filters, and the commands run by the lmtp and pipe transports.
3760 6. Added CONFIGURE_GROUP build-time option.
3762 7. Some older OS have a limit of 256 on the maximum number of file
3763 descriptors. Exim was using setrlimit() to set 1000 as a large value
3764 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3765 systems. I've change it so that if it can't get 1000, it tries for 256.
3767 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3768 was an oversight, and furthermore, ever since the addition of extra
3769 controls (e.g. 4.43/32), the checks on when to allow different forms of
3770 "control" were broken. There should now be diagnostics for all cases when a
3771 control that does not make sense is encountered.
3773 9. Added the /retain_sender option to "control=submission".
3775 10. $recipients is now available in the predata ACL (oversight).
3777 11. Tidy the search cache before the fork to do a delivery from a message
3778 received from the command line. Otherwise the child will trigger a lookup
3779 failure and thereby defer the delivery if it tries to use (for example) a
3780 cached ldap connection that the parent has called unbind on.
3782 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3783 of $address_data from the recipient verification was clobbered by the
3784 sender verification.
3786 13. The value of address_data from a sender verification is now available in
3787 $sender_address_data in subsequent conditions in the ACL statement.
3789 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3791 15. Added a new option "connect=<time>" to callout options, to set a different
3794 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3795 was its contents. (It was OK if the option was not defined at all.)
3797 17. A "Completed" log line is now written for messages that are removed from
3798 the spool by the -Mrm option.
3800 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3801 information about exactly what failed.
3803 19. Added -dd to debug only the daemon process.
3805 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3806 handles timeouts, both on the server side and network timeouts. Renamed the
3807 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3809 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3810 It is now set to "smtps".
3812 22. $host_address is now set to the target address during the checking of
3813 ignore_target_hosts.
3815 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3816 being passed; this would have caused $sender_host_name to have been used if
3817 matching the list had actually called for a host name (not very likely,
3818 since this list is usually IP addresses). A host name is now passed as
3821 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3822 code that specifies a non-restarting handler (typically sigaction() in
3823 modern systems) in an attempt to fix a rare and obscure crash bug.
3825 25. Narrowed the window for a race in the daemon that could cause it to ignore
3826 SIGCHLD signals. This is not a major problem, because they are used only to
3827 wake it up if nothing else does.
3829 26. A malformed maildirsize file could cause Exim to calculate negative values
3830 for the mailbox size or file count. Odd effects could occur as a result.
3831 The maildirsize information is now recalculated if the size or filecount
3834 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3835 support for a long time. Removed HAVE_SYS_VFS_H.
3837 28. Installed the latest version of exipick from John Jetmore.
3839 29. In an address list, if the pattern was not a regular expression, an empty
3840 subject address (from a bounce message) matched only if the pattern was an
3841 empty string. Non-empty patterns were not even tested. This was the wrong
3842 because it is perfectly reasonable to use an empty address as part of a
3843 database query. An empty address is now tested by patterns that are
3844 lookups. However, all the other forms of pattern expect the subject to
3845 contain a local part and a domain, and therefore, for them, an empty
3846 address still always fails if the pattern is not itself empty.
3848 30. Exim went into a mad DNS loop when attempting to do a callout where the
3849 host was specified on an smtp transport, and looking it up yielded more
3850 than one IP address.
3852 31. Re-factored the code for checking spool and log partition space into a
3853 function that finds that data and another that does the check. The former
3854 is then used to implement four new variables: $spool_space, $log_space,
3855 $spool_inodes, and $log_inodes.
3857 32. The RFC2047 encoding function was originally intended for short strings
3858 such as real names; it was not keeping to the 75-character limit for
3859 encoded words that the RFC imposes. It now respects the limit, and
3860 generates multiple encoded words if necessary. To be on the safe side, I
3861 have increased the buffer size for the ${rfc2047: expansion operator from
3864 33. It is now permitted to omit both strings after an "if" condition; if the
3865 condition is true, the result is "true". As before, when the second string
3866 is omitted, a false condition yields an empty string. This makes it less
3867 cumbersome to write custom ACL and router conditions.
3869 34. Failure to deliver a bounce message always caused it to be frozen, even if
3870 there was an errors_to setting on the router. The errors_to setting is now
3873 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3874 canonical form (fully expanded) before being placed in
3875 $sender_host_address.
3877 36. The table in the code that translates DNS record types into text (T_A to
3878 "A" for instance) was missing entries for NS and CNAME. It is just possible
3879 that this could have caused confusion if both these types were looked up
3880 for the same domain, because the text type is used as part of Exim's
3881 per-process caching. But the chance of anyone hitting this buglet seems
3884 37. The dnsdb lookup has been extended in a number of ways.
3886 (1) There is a new type, "zns", which walks up the domain tree until it
3887 finds some nameserver records. It should be used with care.
3889 (2) There is a new type, "mxh", which is like "mx" except that it returns
3890 just the host names, not the priorities.
3892 (3) It is now possible to give a list of domains (or IP addresses) to be
3893 looked up. The behaviour when one of the lookups defers can be
3894 controlled by a keyword.
3896 (4) It is now possible to specify the separator character for use when
3897 multiple records are returned.
3899 38. The dnslists ACL condition has been extended: it is now possible to supply
3900 a list of IP addresses and/or domains to be looked up in a particular DNS
3903 39. Added log_selector=+queue_time_overall.
3905 40. When running the queue in the test harness, wait just a tad after forking a
3906 delivery process, to get repeatability of debugging output.
3908 41. Include certificate and key file names in error message when GnuTLS fails
3909 to set them up, because the GnuTLS error message doesn't include the name
3910 of the failing file when there is a problem reading it.
3912 42. Allow both -bf and -bF in the same test run.
3914 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
3916 44. The "Exiscan patch" is now merged into the mainline Exim source.
3918 45. Sometimes the final signoff response after QUIT could fail to get
3919 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3920 < 0 before doing a fflush(). This bug looks as though it goes back to the
3921 introduction of TLS in release 3.20, but "sometimes" must have been rare
3922 because the tests only now provoked it.
3924 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
3925 (this can affect the format of dates).
3927 47. exim_tidydb, when checking for the continued existence of a message for
3928 which it has found a message-specific retry record, was not finding
3929 messages that were in split spool directories. Consequently, it was
3930 deleting retry records that should have stayed in existence.
3932 48. Steve fixed some bugs in eximstats.
3934 49. The SPA authentication driver was not abandoning authentication and moving
3935 on to the next authenticator when an expansion was forced to fail,
3936 contradicting the general specification for all authenticators. Instead it
3937 was generating a temporary error. It now behaves as specified.
3939 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
3940 (the order specifies the preference for clients). The order is now AES256,
3941 AES128, 3DES, ARCFOUR128.
3943 51. Small patch to Sieve code - explicitly set From: when generating an
3946 52. Exim crashed if a remote delivery caused a very long error message to be
3947 recorded - for instance if somebody sent an entire SpamAssassin report back
3948 as a large number of 550 error lines. This bug was coincidentally fixed by
3949 increasing the size of one of Exim's internal buffers (big_buffer) that
3950 happened as part of the Exiscan merge. However, to be on the safe side, I
3951 have made the code more robust (and fixed the comments that describe what
3954 53. Now that there can be additional text after "Completed" in log lines (if
3955 the queue_time_overall log selector is set), a one-byte patch to exigrep
3956 was needed to allow it to recognize "Completed" as not the last thing in
3959 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
3960 patch that reportedly fixes this has been added. I am not expert enough to
3961 create a test for it. This is what the patch creator wrote:
3963 "I found a little strange behaviour of ldap code when working with
3964 Windows 2003 AD Domain, where users was placed in more than one
3965 Organization Units. When I tried to give exim partial DN, the exit code
3966 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
3967 But simultaneously result of request was absolutely normal ldap result,
3968 so I produce this patch..."
3970 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
3971 REFERENCE, so I have modified the code to exclude the patch when that macro
3974 55. Some experimental protocols are using DNS PTR records for new purposes. The
3975 keys for these records are domain names, not reversed IP addresses. The
3976 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3977 leaves it alone. Component reversal etc. now happens only for IP addresses.
3980 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
3982 57. Double the size of the debug message buffer (to 2048) so that more of very
3983 long debug lines gets shown.
3985 58. The exicyclog utility now does better if the number of log files to keep
3986 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
3988 59. Two changes related to the smtp_active_hostname option:
3990 (1) $smtp_active_hostname is now available as a variable.
3991 (2) The default for smtp_banner uses $smtp_active_hostname instead
3992 of $primary_hostname.
3994 60. The host_aton() function is supposed to be passed a string that is known
3995 to be a valid IP address. However, in the case of IPv6 addresses, it was
3996 not checking this. This is a hostage to fortune. Exim now panics and dies
3997 if the condition is not met. A case was found where this could be provoked
3998 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3999 components; fortuitously, this particular loophole had already been fixed
4000 by change 4.50/55 above.
4002 If there are any other similar loopholes, the new check in host_aton()
4003 itself should stop them being exploited. The report I received stated that
4004 data on the command line could provoke the exploit when Exim was running as
4005 exim, but did not say which command line option was involved. All I could
4006 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4007 running as the user.
4010 61. There was a buffer overflow vulnerability in the SPA authentication code
4011 (which came originally from the Samba project). I have added a test to the
4012 spa_base64_to_bits() function which I hope fixes it.
4015 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
4016 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
4018 63. The daemon start-up calls getloadavg() while still root for those OS that
4019 need the first call to be done as root, but it missed one case: when
4020 deliver_queue_load_max is set with deliver_drop_privilege. This is
4021 necessary for the benefit of the queue runner, because there is no re-exec
4022 when deliver_drop_privilege is set.
4024 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
4025 This has been fixed.
4027 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
4028 was in use, was not putting the data itself into the right store pool;
4029 consequently, it could be overwritten for a subsequent message in the same
4030 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
4033 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
4035 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
4036 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
4037 the function were treating the return as a boolean value, which happened to
4038 work because 0=false and not-0=true, but is not correct code.
4040 68. The host_aton() function was not handling scoped IPv6 addresses (those
4041 with, for example, "%eth0" on the end) correctly.
4043 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
4044 negated items (that is, ~something) in unsigned ints. Some compilers
4045 apparently mutter when there is no cast.
4047 70. If an address verification called from an ACL failed, and did not produce a
4048 user-specific message (i.e. there was only a "system" message), nothing was
4049 put in $acl_verify_message. In this situation, it now puts the system
4052 71. Change 4.23/11 added synchronization checking at the start of an SMTP
4053 session; change 4.31/43 added the unwanted input to the log line - except
4054 that it did not do this in the start of session case. It now does.
4056 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
4057 This is wrong and can cause the other end to generate a synchronization
4058 error if it is another Exim or anything else that does the synchronization
4059 check. A QUIT command is no longer sent after a timeout.
4061 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
4062 during host lookups.
4064 74. The defer_ok option of callout verification was not working if it was used
4065 when verifying addresses in header lines, that is, for this case:
4067 verify = header_sender/callout=defer_ok
4069 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
4070 those file descriptors could be used for SMTP connections. If anything
4071 wrote to stderr (the example that came up was "warn" in embedded Perl), it
4072 could be sent to the SMTP client, causing chaos. The daemon now opens
4073 stdin, stdout, and stderr to /dev/null when it puts itself into the
4076 76. Arrange for output from Perl's "warn" command to be written to Exim's main
4077 log by default. The user can override this with suitable Perl magic.
4079 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
4080 the log message when discard triggers, was not working for the DATA ACL or
4081 for the non-SMTP ACL.
4083 78. Error message wording change in sieve.c.
4085 79. If smtp_accept_max_per_host was set, the number of connections could be
4086 restricted to fewer than expected, because the daemon was trying to set up
4087 a new connection before checking whether the processes handling previous
4088 connections had finished. The check for completed processes is now done
4089 earlier. On busy systems, this bug wouldn't be noticed because something
4090 else would have woken the daemon, and it would have reaped the completed
4093 80. If a message was submitted locally by a user whose login name contained one
4094 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
4095 It caused a spool format error. I have fixed the spool reading code. A
4096 related problem was that the "from" clause in the Received: line became
4097 illegal because of the space(s). It is now covered by ${quote_local_part.
4099 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
4102 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
4104 83. Patch from Sieve maintainer to fix unterminated string problem in
4105 "vacation" handling.
4107 84. Some minor changes to the Linux configuration files to help with other
4108 OS variants using glibc.
4110 85. One more patch for Sieve to update vacation handling to latest spec.
4113 ----------------------------------------------------
4114 See the note above about the 4.44 and 4.50 releases.
4115 ----------------------------------------------------
4121 1. Change 4.43/35 introduced a bug that caused file counts to be
4122 incorrectly computed when quota_filecount was set in an appendfile
4125 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
4126 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
4129 3. Give more explanation in the error message when the command for a transport
4130 filter fails to execute.
4132 4. There are several places where Exim runs a non-Exim command in a
4133 subprocess. The SIGUSR1 signal should be disabled for these processes. This
4134 was being done only for the command run by the queryprogram router. It is
4135 now done for all such subprocesses. The other cases are: ${run, transport
4136 filters, and the commands run by the lmtp and pipe transports.
4138 5. Some older OS have a limit of 256 on the maximum number of file
4139 descriptors. Exim was using setrlimit() to set 1000 as a large value
4140 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
4141 systems. I've change it so that if it can't get 1000, it tries for 256.
4143 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
4144 was an oversight, and furthermore, ever since the addition of extra
4145 controls (e.g. 4.43/32), the checks on when to allow different forms of
4146 "control" were broken. There should now be diagnostics for all cases when a
4147 control that does not make sense is encountered.
4149 7. $recipients is now available in the predata ACL (oversight).
4151 8. Tidy the search cache before the fork to do a delivery from a message
4152 received from the command line. Otherwise the child will trigger a lookup
4153 failure and thereby defer the delivery if it tries to use (for example) a
4154 cached ldap connection that the parent has called unbind on.
4156 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
4157 of $address_data from the recipient verification was clobbered by the
4158 sender verification.
4160 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
4161 was its contents. (It was OK if the option was not defined at all.)
4163 11. A "Completed" log line is now written for messages that are removed from
4164 the spool by the -Mrm option.
4166 12. $host_address is now set to the target address during the checking of
4167 ignore_target_hosts.
4169 13. When checking ignore_target_hosts for an ipliteral router, no host name was
4170 being passed; this would have caused $sender_host_name to have been used if
4171 matching the list had actually called for a host name (not very likely,
4172 since this list is usually IP addresses). A host name is now passed as
4175 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
4176 code that specifies a non-restarting handler (typically sigaction() in
4177 modern systems) in an attempt to fix a rare and obscure crash bug.
4179 15. Narrowed the window for a race in the daemon that could cause it to ignore
4180 SIGCHLD signals. This is not a major problem, because they are used only to
4181 wake it up if nothing else does.
4183 16. A malformed maildirsize file could cause Exim to calculate negative values
4184 for the mailbox size or file count. Odd effects could occur as a result.
4185 The maildirsize information is now recalculated if the size or filecount
4188 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
4189 support for a long time. Removed HAVE_SYS_VFS_H.
4191 18. Updated exipick to current release from John Jetmore.
4193 19. Allow an empty sender to be matched against a lookup in an address list.
4194 Previously the only cases considered were a regular expression, or an
4197 20. Exim went into a mad DNS lookup loop when doing a callout where the
4198 host was specified on the transport, if the DNS lookup yielded more than
4201 21. The RFC2047 encoding function was originally intended for short strings
4202 such as real names; it was not keeping to the 75-character limit for
4203 encoded words that the RFC imposes. It now respects the limit, and
4204 generates multiple encoded words if necessary. To be on the safe side, I
4205 have increased the buffer size for the ${rfc2047: expansion operator from
4208 22. Failure to deliver a bounce message always caused it to be frozen, even if
4209 there was an errors_to setting on the router. The errors_to setting is now
4212 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
4213 canonical form (fully expanded) before being placed in
4214 $sender_host_address.
4216 24. Updated eximstats to version 1.33
4218 25. Include certificate and key file names in error message when GnuTLS fails
4219 to set them up, because the GnuTLS error message doesn't include the name
4220 of the failing file when there is a problem reading it.
4222 26. Expand error message when OpenSSL has problems setting up cert/key files.
4225 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
4226 (this can affect the format of dates).
4228 28. exim_tidydb, when checking for the continued existence of a message for
4229 which it has found a message-specific retry record, was not finding
4230 messages that were in split spool directories. Consequently, it was
4231 deleting retry records that should have stayed in existence.
4233 29. eximstats updated to version 1.35
4234 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
4235 1.35 - bugfix such that pie charts by volume are generated correctly
4237 30. The SPA authentication driver was not abandoning authentication and moving
4238 on to the next authenticator when an expansion was forced to fail,
4239 contradicting the general specification for all authenticators. Instead it
4240 was generating a temporary error. It now behaves as specified.
4242 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
4243 (the order specifies the preference for clients). The order is now AES256,
4244 AES128, 3DES, ARCFOUR128.
4246 31. Small patch to Sieve code - explicitly set From: when generating an
4249 32. Exim crashed if a remote delivery caused a very long error message to be
4250 recorded - for instance if somebody sent an entire SpamAssassin report back
4251 as a large number of 550 error lines. This bug was coincidentally fixed by
4252 increasing the size of one of Exim's internal buffers (big_buffer) that
4253 happened as part of the Exiscan merge. However, to be on the safe side, I
4254 have made the code more robust (and fixed the comments that describe what
4257 33. Some experimental protocols are using DNS PTR records for new purposes. The
4258 keys for these records are domain names, not reversed IP addresses. The
4259 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
4260 leaves it alone. Component reversal etc. now happens only for IP addresses.
4263 34. The host_aton() function is supposed to be passed a string that is known
4264 to be a valid IP address. However, in the case of IPv6 addresses, it was
4265 not checking this. This is a hostage to fortune. Exim now panics and dies
4266 if the condition is not met. A case was found where this could be provoked
4267 from a dnsdb PTR lookup with an IPv6 address that had more than 8
4268 components; fortuitously, this particular loophole had already been fixed
4269 by change 4.50/55 or 4.44/33 above.
4271 If there are any other similar loopholes, the new check in host_aton()
4272 itself should stop them being exploited. The report I received stated that
4273 data on the command line could provoke the exploit when Exim was running as
4274 exim, but did not say which command line option was involved. All I could
4275 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4276 running as the user.
4279 35. There was a buffer overflow vulnerability in the SPA authentication code
4280 (which came originally from the Samba project). I have added a test to the
4281 spa_base64_to_bits() function which I hope fixes it.
4284 36. The daemon start-up calls getloadavg() while still root for those OS that
4285 need the first call to be done as root, but it missed one case: when
4286 deliver_queue_load_max is set with deliver_drop_privilege. This is
4287 necessary for the benefit of the queue runner, because there is no re-exec
4288 when deliver_drop_privilege is set.
4290 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
4291 was in use, was not putting the data itself into the right store pool;
4292 consequently, it could be overwritten for a subsequent message in the same
4293 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
4296 38. Sometimes the final signoff response after QUIT could fail to get
4297 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
4298 < 0 before doing a fflush(). This bug looks as though it goes back to the
4299 introduction of TLS in release 3.20, but "sometimes" must have been rare
4300 because the tests only now provoked it.
4306 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
4307 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
4308 Now it returns an integer. A number of calls were still expecting a T/F
4309 return. Fortuitously, in all cases, the tests worked in OK situations,
4310 which is the norm. However, things would have gone wrong on any write
4311 failures on the smtp file descriptor. This function is used when sending
4312 messages over SMTP and also when doing verify callouts.
4314 2. When Exim is called to do synchronous delivery of a locally submitted
4315 message (the -odf or -odi options), it no longer closes stderr before doing
4318 3. Implemented the mua_wrapper option.
4320 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
4322 5. Implemented the functions header_remove(), header_testname(),
4323 header_add_at_position(), and receive_remove_recipient(), and exported them
4326 6. If an ACL "warn" statement specified the addition of headers, Exim already
4327 inserted X-ACL-Warn: at the start if there was no header name. However, it
4328 was not making this test for the second and subsequent header lines if
4329 there were newlines in the string. This meant that an invalid header could
4330 be inserted if Exim was badly configured.
4332 7. Allow an ACL "warn" statement to add header lines at the start or after all
4333 the Received: headers, as well as at the end.
4335 8. Added the rcpt_4xx retry error code.
4337 9. Added postmaster_mailfrom=xxx to callout verification option.
4339 10. Added mailfrom=xxxx to the callout verification option, for verify=
4342 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
4343 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
4345 12. Inserted some casts to stop certain compilers warning when using pointer
4346 differences as field lengths or precisions in printf-type calls (mostly
4347 affecting debugging statements).
4349 13. Added optional readline() support for -be (dynamically loaded).
4351 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
4352 same clock tick as a message's arrival, so that its received time was the
4353 same as the "first fail" time on the retry record, and that message
4354 remained on the queue past the ultimate address timeout, every queue runner
4355 would try a delivery (because it was past the ultimate address timeout) but
4356 after another failure, the ultimate address timeout, which should have then
4357 bounced the address, did not kick in. This was a "< instead of <=" error;
4358 in most cases the first failure would have been in the next clock tick
4359 after the received time, and all would be well.
4361 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
4362 being recognized when the domain list was tested by the match_domain
4363 condition in an expansion string.
4365 16. Added the ${str2b64: operator.
4367 17. Exim was always calling setrlimit() to set a large limit for the number of
4368 processes, without checking whether the existing limit was already
4369 adequate. (It did check for the limit on file descriptors.) Furthermore,
4370 errors from getrlimit() and setrlimit() were being ignored. Now they are
4371 logged to the main and panic logs, but Exim does carry on, to try to do its
4372 job under whatever limits there are.
4374 18. Imported PCRE 5.0.
4376 19. Trivial typo in log message " temporarily refused connection" (the leading
4379 20. If the log selector return_path_on_delivery was set and an address was
4380 redirected to /dev/null, the delivery process crashed because it assumed
4381 that a return path would always be set for a "successful" delivery. In this
4382 case, the whole delivery is bypassed as an optimization, and therefore no
4385 21. Internal re-arrangement: the function for sending a challenge and reading
4386 a response while authentication was assuming a zero-terminated challenge
4387 string. It's now changed to take a pointer and a length, to allow for
4388 binary data in such strings.
4390 22. Added the cyrus_sasl authenticator (code supplied by MBM).
4392 23. Exim was not respecting finduser_retries when seeking the login of the
4393 uid under which it was called; it was always trying 10 times. (The default
4394 setting of finduser_retries is zero.) Also, it was sleeping after the final
4395 failure, which is pointless.
4397 24. Implemented tls_on_connect_ports.
4399 25. Implemented acl_smtp_predata.
4401 26. If the domain in control=submission is set empty, Exim assumes that the
4402 authenticated id is a complete email address when it generates From: or
4403 Sender: header lines.
4405 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
4406 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
4407 chown and chgrp in /bin and hostname in /usr/bin.
4409 28. Exim was keeping the "process log" file open after each use, just as it
4410 does for the main log. This opens the possibility of it remaining open for
4411 long periods when the USR1 signal hits a daemon. Occasional processlog
4412 errors were reported, that could have been caused by this. Anyway, it seems
4413 much more sensible not to leave this file open at all, so that is what now
4416 29. The long-running daemon process does not normally write to the log once it
4417 has entered its main loop, and it closes the log before doing so. This is
4418 so that log files can straightforwardly be renamed and moved. However,
4419 there are a couple of unusual error situations where the daemon does write
4420 log entries, and I had neglected to close the log afterwards.
4422 30. The text of an SMTP error response that was received during a remote
4423 delivery was being truncated at 512 bytes. This is too short for some of
4424 the long messages that one sometimes sees. I've increased the limit to
4427 31. It is now possible to make retry rules that apply only when a message has a
4428 specific sender, in particular, an empty sender.
4430 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
4431 it possible to be selective about when SMTP synchronization is enforced.
4433 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
4435 32. Implemented hosts_connection_nolog.
4437 33. Added an ACL for QUIT.
4439 34. Setting "delay_warning=" to disable warnings was not working; it gave a
4442 35. Added mailbox_size and mailbox_filecount to appendfile.
4444 36. Added control = no_multiline_responses to ACLs.
4446 37. There was a bug in the logic of the code that waits for the clock to tick
4447 in the case where the clock went backwards by a substantial amount such
4448 that the microsecond fraction of "now" was more than the microsecond
4449 fraction of "then" (but the whole seconds number was less).
4451 38. Added support for the libradius Radius client library this is found on
4452 FreeBSD (previously only the radiusclient library was supported).
4458 1. When certain lookups returned multiple values in the form name=value, the
4459 quoting of the values was not always being done properly. Specifically:
4460 (a) If the value started with a double quote, but contained no whitespace,
4462 (b) If the value contained whitespace other than a space character (i.e.
4463 tabs or newlines or carriage returns) it was not quoted.
4464 This fix has been applied to the mysql and pgsql lookups by writing a
4465 separate quoting function and calling it from the lookup code. The fix
4466 should probably also be applied to nisplus, ibase and oracle lookups, but
4467 since I cannot test any of those, I have not disturbed their existing code.
4469 2. A hit in the callout cache for a specific address caused a log line with no
4470 reason for rejecting RCPT. Now it says "Previous (cached) callout
4471 verification failure".
4473 3. There was an off-by-one bug in the queryprogram router. An over-long
4474 return line was truncated at 256 instead of 255 characters, thereby
4475 overflowing its buffer with the terminating zero. As well as fixing this, I
4476 have increased the buffer size to 1024 (and made a note to document this).
4478 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
4479 when Exim is waiting for an SMTP response from a remote server, Exim
4480 restarts its select() call on the socket, thereby resetting its timeout.
4481 This is not a problem when such interrupts are rare. Somebody set up a cron
4482 job to run exiwhat every 2 minutes, which is less than the normal select()
4483 timeout (5 or 10 minutes). This meant that the select() timeout never
4484 kicked in because it was always reset. I have fixed this by comparing the
4485 time when an interrupt arrives with the time at the start of the first call
4486 to select(). If more time than the timeout has elapsed, the interrupt is
4487 treated as a timeout.
4489 5. Some internal re-factoring in preparation for the addition of Sieve
4490 extensions (by MH). In particular, the "personal" test is moved to a
4491 separate function, and given an option for scanning Cc: and Bcc: (which is
4492 not set for Exim filters).
4494 6. When Exim created an email address using the login of the caller as the
4495 local part (e.g. when creating a From: or Sender: header line), it was not
4496 quoting the local part when it contained special characters such as @.
4498 7. Installed new OpenBSD configuration files.
4500 8. Reworded some messages for syntax errors in "and" and "or" conditions to
4501 try to make them clearer.
4503 9. Callout options, other than the timeout value, were being ignored when
4504 verifying sender addresses in header lines. For example, when using
4506 verify = header_sender/callout=no_cache
4508 the cache was (incorrectly) being used.
4510 10. Added a missing instance of ${EXE} to the exim_install script; this affects
4511 only the Cygwin environment.
4513 11. When return_path_on_delivery was set as a log selector, if different remote
4514 addresses in the same message used different return paths and parallel
4515 remote delivery occurred, the wrong values would sometimes be logged.
4516 (Whenever a remote delivery process finished, the return path value from
4517 the most recently started remote delivery process was logged.)
4519 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
4520 lines when AUTH and/or TLS are in use. This is the "received protocol"
4521 field. Exim used to use "asmtp" for authenticated SMTP, without any
4522 indication (in the protocol name) for TLS use. Now it follows the RFC and
4523 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
4524 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
4525 names appear in log lines as well as in Received: header lines.
4527 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
4528 extensions, and comparison tests, and to fix some bugs.
4530 14. Changes to the "personal" filter test:
4532 (1) The test was buggy in that it was just doing the equivalent of
4533 "contains" tests on header lines. For example, if a user's address was
4534 anne@some.where, the "personal" test would incorrectly be true for
4536 To: susanne@some.where
4538 This test is now done by extracting each address from the header in turn,
4539 and checking the entire address. Other tests that are part of "personal"
4540 are now done using regular expressions (for example, to check local parts
4541 of addresses in From: header lines).
4543 (2) The list of non-personal local parts in From: addresses has been
4544 extended to include "listserv", "majordomo", "*-request", and "owner-*",
4545 taken from the Sieve specification recommendations.
4547 (3) If the message contains any header line starting with "List-" it is
4548 treated as non-personal.
4550 (4) The test for "circular" in the Subject: header line has been removed
4551 because it now seems ill-conceived.
4553 15. Minor typos in src/EDITME comments corrected.
4555 16. Installed latest exipick from John Jetmore.
4557 17. If headers_add on a router specified a text string that was too long for
4558 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
4559 of string_sprintf() is now avoided.
4561 18. $message_body_size was not set (it was always zero) when running the DATA
4562 ACL and the local_scan() function.
4564 19. For the "mail" command in an Exim filter, no default was being set for
4565 the once_repeat time, causing a random time value to be used if "once" was
4566 specified. (If the value happened to be <= 0, no repeat happened.) The
4567 default is now 0s, meaning "never repeat". The "vacation" command was OK
4568 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
4569 (I found it when inspecting the code).
4571 20. There is now an overall timeout for performing a callout verification. It
4572 defaults to 4 times the callout timeout, which applies to individual SMTP
4573 commands during the callout. The overall timeout applies when there is more
4574 than one host that can be tried. The timeout is checked before trying the
4575 next host. This prevents very long delays if there are a large number of
4576 hosts and all are timing out (e.g. when the network connections are timing
4577 out). The value of the overall timeout can be changed by specifying an
4578 additional sub-option for "callout", called "maxwait". For example:
4580 verify = sender/callout=5s,maxwait=20s
4582 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
4583 to the end before writing, but this should make it even safer).
4585 22. Exim was forgetting that it had advertised PIPELINING for the second and
4586 subsequent messages on an SMTP connection. It was also not resetting its
4587 memory on STARTTLS and an internal HELO.
4589 23. When Exim logs an SMTP synchronization error within a session, it now
4590 records whether PIPELINING has been advertised or not.
4592 24. Added 3 instances of "(long int)" casts to time_t variables that were being
4593 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
4594 rather than long int.
4596 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
4598 26. Added the never_mail option to autoreply.
4604 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
4605 crash if the getsockname() call failed; this can happen if a connection is
4606 closed very soon after it is established. The problem was simply in the
4607 order in which certain operations were done, causing Exim to try to write
4608 to the SMTP stream before it had set up the file descriptor. The bug has
4609 been fixed by making things happen in the correct order.
4615 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
4616 before the connection was closed, thus losing the rejection response.
4618 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
4619 some early Solaris releases, but causes trouble in current releases where
4620 socklen_t is defined.
4622 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
4625 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
4628 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
4629 that releasing the top of it at the end releases what was used for sub-
4630 expansions (unless the block got too big). However, discard this block if
4631 the first thing is a variable or header, so that we can use its block when
4632 it is dynamic (useful for very large $message_headers, for example).
4634 6. Lookups now cache *every* query, not just the most recent. A new, separate
4635 store pool is used for this. It can be recovered when all lookup caches are
4636 flushed. Lookups now release memory at the end of their result strings.
4637 This has involved some general refactoring of the lookup sources.
4639 7. Some code has been added to the store_xxx() functions to reduce the amount
4640 of flapping under certain conditions.
4642 8. log_incoming_interface used to affect only the <= reception log lines. Now
4643 it causes the local interface and port to be added to several more SMTP log
4644 lines, for example "SMTP connection from", and rejection lines.
4646 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
4648 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
4650 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
4651 could be overwritten at the end of the current message (or the start of a
4652 new message if it was set in a HELO ACL). The value is now preserved for
4653 the duration of the SMTP connection.
4655 12. If a transport had a headers_rewrite setting, and a matching header line
4656 contained an unqualified address, that address was qualified, even if it
4657 did not match any rewriting rules. The underlying bug was that the values
4658 of the flags that permit the existence of unqualified sender and recipient
4659 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
4660 non-local messages, and by -bnq for local messages) were not being
4661 preserved with the message after it was received.
4663 13. When Exim was logging an SMTP synchronization error, it could sometimes log
4664 "next input=" as part of the text comprising the host identity instead of
4665 the correct text. The code was using the same buffer for two different
4666 strings. However, depending on which order the printing function evaluated
4667 its arguments, the bug did not always show up. Under Linux, for example, my
4668 test suite worked just fine.
4670 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
4671 doesn't work with some older versions of Perl. It has been changed to "my",
4672 which in any case is probably the better facility to use.
4674 15. A really picky compiler found some instances of statements for creating
4675 error messages that either had too many or two few arguments for the format
4678 16. The size of the buffer for calls to the DNS resolver has been increased
4679 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4680 for addresses that have a lot of PTR records. This alleviates a problem; it
4681 does not fully solve it.
4683 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4684 buffer now truncates the list and logs the incident, which is the same
4685 action as happens when Exim is looking up a host name and its aliases.
4686 Previously in this situation something unpredictable would happen;
4687 sometimes it was "internal error: store_reset failed".
4689 18. If a server dropped the connection unexpectedly when an Exim client was
4690 using GnuTLS and trying to read a response, the client delivery process
4691 crashed while trying to generate an error log message.
4693 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4694 string, for example:
4696 warn message = H1: something\nH2: something
4698 the text was added as a single header line from Exim's point of view
4699 though it ended up OK in the delivered message. However, searching for the
4700 second and subsequent header lines using $h_h2: did not work. This has been
4701 fixed. Similarly, if a system filter added multiple headers in this way,
4702 the routers could not see them.
4704 20. Expanded the error message when iplsearch is called with an invalid key to
4705 suggest using net-iplsearch in a host list.
4707 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4708 ACLs are no longer actually imposed (and a message to that effect is
4711 22. If a "gecos" field in a passwd entry contained escaped characters, in
4712 particular, if it contained a \" sequence, Exim got it wrong when building
4713 a From: or a Sender: header from that name. A second bug also caused
4714 incorrect handling when an unquoted " was present following a character
4715 that needed quoting.
4717 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4718 was not being matched caselessly.
4720 24. Arranged for all hyphens in the exim.8 source to be escaped with
4723 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4724 properly. Recipient callout cache records were still being keyed to include
4725 the sender, even when use_sender was set false. This led to far more
4726 callouts that were necessary. The sender is no longer included in the key
4727 when use_sender is false.
4729 26. Added "control = submission" modifier to ACLs.
4731 27. Added the ${base62d: operator to decode base 62 numbers.
4733 28. dnsdb lookups can now access SRV records.
4735 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4736 the configuration file.
4738 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4739 (-v) mode. This makes the output for a verbose queue run more intelligible.
4741 31. Added a use_postmaster feature to recipient callouts.
4743 32. Added the $body_zerocount variable, containing the number of binary zero
4744 bytes in the message body.
4746 33. The time of last modification of the "new" subdirectory is now used as the
4747 "mailbox time last read" when there is a quota error for a maildir
4750 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4752 35. Added +ignore_unknown as a special item in host lists.
4754 36. Code for decoding IPv6 addresses in host lists is now included, even if
4755 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4756 address was recognized as an IP address, but was then not correctly decoded
4757 into binary, causing unexpected and incorrect effects when compared with
4764 1. Very minor rewording of debugging text in manualroute to say "list of
4765 hosts" instead of "hostlist".
4767 2. If verify=header_syntax was set, and a header line with an unqualified
4768 address (no domain) and a large number of spaces between the end of the
4769 name and the colon was received, the reception process suffered a buffer
4770 overflow, and (when I tested it) crashed. This was caused by some obsolete
4771 code that should have been removed. The fix is to remove it!
4773 3. When running in the test harness, delay a bit after writing a bounce
4774 message to get a bit more predictability in the log output.
4776 4. Added a call to search_tidyup() just before forking a reception process. In
4777 theory, someone could use a lookup in the expansion of smtp_accept_max_
4778 per_host which, without the tidyup, could leave open a database connection.
4780 5. Added the variables $recipient_data and $sender_data which get set from a
4781 lookup success in an ACL "recipients" or "senders" condition, or a router
4782 "senders" option, similar to $domain_data and $local_part_data.
4784 6. Moved the writing of debug_print from before to after the "senders" test
4787 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4788 problems for message scanning, either using a data ACL, or using
4789 local_scan() because the Received: header was not generated till after they
4790 were called (in order to set the time as the time of reception completion).
4791 I have revised the way this works. The header is now generated after the
4792 body is received, but before the ACL or local_scan() are called. After they
4793 are run, the timestamp in the header is updated.
4799 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4800 before starting a queue runner without re-exec. This happened only when
4801 deliver_drop_privilege was set or when the Exim user was set to root. The
4802 effect of the bug was that timeouts during subsequent deliveries caused
4803 crashes instead of being properly handled. The handler is now left at its
4804 default (and expected) setting.
4806 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4807 message, again when deliver_drop_privilege is set or Exim is run as root.
4808 The bug described in (1) was not present in this case, but the tidying up
4809 of the other signals was missing. I have made the two cases consistent.
4811 3. The ignore_target_hosts setting on a manualroute router was being ignored
4812 for hosts that were looked up using the /MX notation.
4814 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4817 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4818 operated on the sender address. After changing the $sender_address to <>
4819 for the sender address verify, Exim was re-instated it as the original
4820 (before rewriting) address, but remembering that it had rewritten it, so it
4821 wasn't rewriting it again. This bug also had the effect of breaking the
4822 sender address verification caching when the sender address was rewritten.
4824 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4825 This has been changed so that if the ip literal address matches
4826 ignore_target_hosts, the router declines.
4828 7. Added expansion conditions match_domain, match_address, and match_local_
4829 part (NOT match_host).
4831 8. The placeholder for the Received: header didn't have a length field set.
4833 9. Added code to Exim itself and to exim_lock to test for a specific race
4834 condition that could lead to file corruption when using MBX delivery. The
4835 issue is with the lockfile that is created in /tmp. If this file is removed
4836 after a process has opened it but before that process has acquired a lock,
4837 there is the potential for a second process to recreate the file and also
4838 acquire a lock. This could lead to two Exim processes writing to the file
4839 at the same time. The added code performs the same test as UW imapd; it
4840 checks after acquiring the lock that its file descriptor still refers to
4841 the same named file.
4843 10. The buffer for building added header lines was of fixed size, 8192 bytes.
4844 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
4847 11. Added the smtp_active_hostname option. If used, this will typically be made
4848 to depend on the incoming interface address. Because $interface_address is
4849 not set up until the daemon has forked a reception process, error responses
4850 that can happen earlier (such as "too many connections") no longer contain
4853 12. If an expansion in a condition on a "warn" statement fails because a lookup
4854 defers, the "warn" statement is abandoned, and the next ACL statement is
4855 processed. Previously this caused the whole ACL to be aborted.
4857 13. Added the iplsearch lookup type.
4859 14. Added ident_timeout as a log selector.
4861 15. Added tls_certificate_verified as a log selector.
4863 16. Added a global option tls_require_ciphers (compare the smtp transport
4864 option of the same name). This controls incoming TLS connections.
4866 17. I finally figured out how to make tls_require_ciphers do a similar thing
4867 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
4868 before starting the TLS session.
4870 18. Tabs are now shown as \t in -bP output.
4872 19. If the log selector return_path_on_delivery was set, Exim crashed when
4873 bouncing a message because it had too many Received: header lines.
4875 20. If two routers both had headers_remove settings, and the first one included
4876 a superfluous trailing colon, the final name in the first list and the
4877 first name in the second list were incorrectly joined into one item (with a
4878 colon in the middle).
4884 1. Added -C and -D options to the exinext utility, mainly to make it easier
4885 to include in the automated testing, but these could be helpful when
4886 multiple configurations are in use.
4888 2. The exinext utility was not formatting the output nicely when there was
4889 an alternate port involved in the retry record key, nor when there was a
4890 message id as well (for retries that were specific to a specific message
4891 and a specific host). It was also confused by IPv6 addresses, because of
4892 the additional colons they contain. I have fixed the IPv4 problem, and
4893 patched it up to do a reasonable job for IPv6.
4895 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
4896 delivery, the log line now contains "pipelined" if PIPELINING was used.
4898 4. An SMTP transport process used to panic and die if the bind() call to set
4899 an explicit outgoing interface failed. This has been changed; it is now
4900 treated in the same way as a connect() failure.
4902 5. A reference to $sender_host_name in the part of a conditional expansion
4903 that was being skipped was still causing a DNS lookup. This no longer
4906 6. The def: expansion condition was not recognizing references to header lines
4907 that used bh_ and bheader_.
4909 7. Added the _cache feature to named lists.
4911 8. The code for checking quota_filecount in the appendfile transport was
4912 allowing one more file than it should have been.
4914 9. For compatibility with Sendmail, the command line option
4922 and sets the incoming protocol and host name (for trusted callers). The
4923 host name and its colon can be omitted when only the protocol is to be set.
4924 Note the Exim already has two private options, -pd and -ps, that refer to
4925 embedded Perl. It is therefore impossible to set a protocol value of "d" or
4926 "s", but I don't think that's a major issue.
4928 10. A number of refactoring changes to the code, none of which should affect
4931 (a) The number of logging options was getting close to filling up the
4932 32-bit word that was used as a bit map. I have split them into two classes:
4933 those that are passed in the argument to log_write(), and those that are
4934 only ever tested independently outside of that function. These are now in
4935 separate 32-bit words, so there is plenty of room for expansion again.
4936 There is no change in the user interface or the logging behaviour.
4938 (b) When building, for example, log lines, the code previously used a
4939 macro that called string_cat() twice, in order to add two strings. This is
4940 not really sufficiently general. Furthermore, there was one instance where
4941 it was actually wrong because one of the argument was used twice, and in
4942 one call a function was used. (As it happened, calling the function twice
4943 did not affect the overall behaviour.) The macro has been replaced by a
4944 function that can join an arbitrary number of extra strings onto a growing
4947 (c) The code for expansion conditions now uses a table and a binary chop
4948 instead of a serial search (which was left over from when there were very
4949 few conditions). Also, it now recognizes conditions like "pam" even when
4950 the relevant support is not compiled in: a suitably worded error message is
4951 given if an attempt is made to use such a condition.
4953 11. Added ${time_interval:xxxxx}.
4955 12. A bug was causing one of the ddress fields not to be passed back correctly
4956 from remote delivery subprocesses. The field in question was not being
4957 subsequently used, so this caused to problems in practice.
4959 13. Added new log selectors queue_time and deliver_time.
4961 14. Might have fixed a bug in maildirsizefile handling that threw up
4962 "unexpected character" debug warnings, and recalculated the data
4963 unnecessarily. In any case, I expanded the warning message to give more
4966 15. Added the message "Restricted characters in address" to the statements in
4967 the default ACL that block characters like @ and % in local parts.
4969 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
4970 Three changes have been made:
4972 (a) There was a serious bug; a negative response to MAIL caused the whole
4973 recipient domain to be cached as invalid, thereby blocking all messages
4974 to all local parts at the same domain, from all senders. This bug has
4975 been fixed. The domain is no longer cached after a negative response to
4976 MAIL if the sender used is not empty.
4978 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
4981 (c) A new callout option, "use_sender" has been added for people who want
4982 the modified behaviour.
4988 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
4991 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
4992 indeed breaks things for older releases.
4994 3. Added additional logging to the case where there is a problem reading data
4995 from a filter that is running in a subprocess using a pipe, in order to
4996 try to track down a specific problem.
4998 4. Testing facility fudge: when running in the test harness and attempting
4999 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
5000 getting "No route to host". Convert this to a timeout.
5002 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
5005 6. Some OS don't have socklen_t but use size_t instead. This affects the
5006 fifth argument of getsockopt() amongst other things. This is now
5007 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
5008 can be set for individual OS. I have set it for SunOS5, OSF1, and
5009 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
5010 some earlier ones do not.
5012 7. Change 4.30/15 was not doing the test caselessly.
5014 8. The standard form for an IPv6 address literal was being rejected by address
5015 parsing in, for example, MAIL and RCPT commands. An example of this kind of
5016 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5017 this, as well as the form without the "IPv6" on the front (but only when
5018 address literals are enabled, of course).
5020 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
5022 10. Exim crashed if a message with an empty sender address specified by -f
5023 encountered a router with an errors_to setting. This could be provoked only
5024 by a command such as
5028 where an empty string was supplied; "<>" did not hit this bug.
5030 11. Installed PCRE release 4.5.
5032 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
5033 remained set. It is now erased.
5035 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
5036 times from message ids (which are base 36 rather than the normal 62).
5038 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
5039 were being counted as actual protocol errors, and logged if the log
5040 selector +smtp_protocol_error was set. One cannot be perfect in this test,
5041 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
5042 and DATA following a set of rejected RCPTs do not count as protocol errors.
5043 In other words, Exim assumes they were pipelined, though this may not
5044 actually be the case. Of course, in all cases the client gets an
5045 appropriate error code.
5047 15. If a lookup fails in an ACL condition, a message about the failure may
5048 be available; it is used if testing the ACL cannot continue, because most
5049 such messages specify what the cause of the deferral is. However, some
5050 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
5051 that caused an old message to be retained and used if a later statement
5052 caused a defer, replacing the real cause of the deferral.
5054 16. If an IP address had so many PTR records that the DNS lookup buffer
5055 was not large enough to hold them, Exim could crash while trying to process
5056 the truncated data. It now detects and logs this case.
5058 17. Further to 4.21/58, another change has been made: if (and only if) the
5059 first line of a message (the first header line) ends with CRLF, a bare LF
5060 in a subsequent header line has a space inserted after it, so as not to
5061 terminate the header.
5063 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
5064 unnecessarily, used atoi() instead of strtol(), and didn't check the
5065 termination when getting file sizes from file names by regex.
5067 19. Completely re-implemented the support for maildirsize files, in the light
5068 of a number of problems with the previous contributed implementation
5069 (4.30/29). In particular:
5071 . If the quota is zero, the maildirsize file is maintained, but no quota is
5074 . If the maildir directory does not exist, it is created before any attempt
5075 to write a maildirsize file.
5077 . The quota value in the file is just a cache; if the quota is changed in
5078 the transport, the new value overrides.
5080 . A regular expression is available for excluding directories from the
5083 20. The autoreply transport checks the characters in options that define the
5084 message's headers; it allows continued headers, but it was checking with
5085 isspace() after an embedded newline instead of explicitly looking for a
5088 21. If all the "regular" hosts to which an address was routed had passed their
5089 expiry times, and had not reached their retry times, the address was
5090 bounced, even if fallback hosts were defined. Now Exim should go on to try
5093 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
5094 equivalent code in the SMTP transport. Some hosts send humungous responses
5095 to HELO/EHLO, more than 1024 it seems.
5097 23. Refactoring: code in filter.c used (void *) for "any old type" but this
5098 gives compiler warnings in some environments. I've now done it "properly",
5101 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
5102 (because of problems with the built-in one) was declared to return uschar *
5103 instead of char *, causing compiler failure.
5105 25. Fixed a file descriptor leak when processing alias/forward files.
5107 26. Fixed a minor format string issue in dbfn.c.
5109 27. Typo in exim.c: ("dmbnz" for "dbmnz").
5111 28. If a filter file refered to $h_xxx or $message_headers, and the headers
5112 contained RFC 2047 "words", Exim's memory could, under certain conditions,
5115 29. When a sender address is verified, it is cached, to save repeating the test
5116 when there is more than one recipient in a message. However, when the
5117 verification involves a callout, it is possible for different callout
5118 options to be set for different recipients. It is too complicated to keep
5119 track of this in the cache, so now Exim always runs a verification when a
5120 callout is required, relying on the callout cache for the optimization.
5121 The overhead is duplication of the address routing, but this should not be
5124 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
5125 to be verified with callout=postmaster, and the main callout worked but the
5126 postmaster check failed, the verification correctly failed. However, if a
5127 subsequent RCPT command asked for sender verification *without* the
5128 postmaster check, incorrect caching caused this verification also to fail,
5131 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
5132 it was not caching the DNS options (qualify_single, search_parents) that
5133 were used when the lookup failed. A subsequent lookup with different
5134 options therefore always gave the same answer, though there were cases
5135 where it should not have. (Example: a "domains = !$mx_any" option on a
5136 dnslookup router: the "domains" option is always processed without any
5137 widening, but the router might have qualify_single set.) Now Exim uses the
5138 cached value only when the same options are set.
5140 32. Added John Jetmore's "exipick" utility to the distribution.
5142 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
5143 than a timeout (e.g. a certificate is required, and is not provided), an
5144 Exim server now closes the connection immediately. Previously it waited for
5145 the client to close - but if the client is SSL, it seems that they each
5146 wait for each other, leading to a delay before one of them times out.
5148 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
5149 maintained 0.8.x compatibility because I don't think many are using it, and
5150 it is clearly obsolete.
5152 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
5155 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
5156 client certificate was expired. A simple patch fixes this, though I don't
5157 understand the full logic of why the verify callback is called multiple
5160 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
5161 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
5162 which causes problems with some clients (such as the Certicom SSL Plus
5163 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
5164 disables the coutermeasure allowing Eudora to connect."
5166 38. Exim was not checking that a write() to a log file succeeded. This could
5167 lead to Bad Things if a log got too big, in particular if it hit a file
5168 size limit. Exim now panics and dies if it cannot write to a log file, just
5169 as it does if it cannot open a log file.
5171 39. Modified OS/Makefile-Linux so that it now contains
5173 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
5175 The two -D definitions ensure that Exim is compiled with large file
5176 support, which makes it possible to handle log files that are bigger than
5179 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
5180 instance) a domain was checked against a named list that involved a lookup,
5181 causing $domain_data to be set, then another domain was checked against the
5182 same list, then the first domain was re-checked, the value of $domain_data
5183 after the final check could be wrong. In particular, if the second check
5184 failed, it could be set empty. This bug probably also applied to
5187 41. The strip_trailing_dot option was not being applied to the address given
5188 with the -f command-line option.
5190 42. The code for reading a message's header from the spool was incrementing
5191 $received_count, but never initializing it. This meant that the value was
5192 incorrect (doubled) while delivering a message in the same process in which
5193 it was received. In the most common configuration of Exim, this never
5194 happens - a fresh exec is done - but it can happen when
5195 deliver_drop_privilege is set.
5197 43. When Exim logs an SMTP synchronization error - client data sent too soon -
5198 it now includes up to 150 characters of the unexpected data in the log
5201 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
5202 and building data strings. The size of both of these buffers was 10 000
5203 bytes - far larger than anybody would *ever* want, thought I. Needless to
5204 say, somebody hit the limit. I have increased the maximum line length to
5205 20 000 and the maximum data length of concatenated lines to 100 000. I have
5206 also fixed two bugs, because there was no checking on these buffers. Tsk,
5207 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
5208 buffer is too small.
5210 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
5211 lsearch lookups. Now it does.
5213 46. When parsing a route_list item in a manualroute router, a fixed-length
5214 buffer was used for the list of hosts. I made this 1024 bytes long,
5215 thinking that nobody would ever have a list of hosts that long. Wrong.
5216 Somebody had a whole pile of complicated expansion conditions, and the
5217 string was silently truncated, leading to an expansion error. It turns out
5218 that it is easier to change to an unlimited length (owing to other changes
5219 that have happened since this code was originally written) than to build
5220 structure for giving a limitation error. The length of the item that
5221 expands into the list of hosts is now unlimited.
5223 47. The lsearch lookup could not handle data where the length of text line was
5224 more than 4095 characters. Such lines were truncated, leading to shortened
5225 data being returned. It should now handle lines of any length.
5227 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
5228 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
5231 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
5232 replacing strings such as BIN_DIRECTORY in a source file: the replacement
5233 no longer happens in comment lines. A list of replacements is now placed
5234 at the head of all of the source files, except those whose only change is
5235 to replace PERL_COMMAND in the very first #! line.
5237 50. Replaced the slow insertion sort in queue.c, for sorting the list of
5238 messages on the queue, with a bottom-up merge sort, using code contributed
5239 by Michael Haardt. This should make operations like -bp somewhat faster on
5240 large queues. It won't affect queue runners, except when queue_run_in_order
5243 51. Installed eximstats 1.31 in the distribution.
5245 52. Added support for SRV lookups to the dnslookup router.
5247 53. If an ACL referred to $message_body or $message_body_end, the value was not
5248 reset for any messages that followed in the same SMTP session.
5250 54. The store-handling optimization for building very long strings was not
5251 differentiating between the different store pools. I don't think this
5252 actually made any difference in practice, but I've tidied it.
5254 55. While running the routers to verify a sender address, $sender_address
5255 was still set to the sender address. This is wrong, because when routing to
5256 send a bounce to the sender, it would be empty. Therefore, I have changed
5257 it so that, while verifying a sender address, $sender_address is set to <>.
5258 (There is no change to what happens when verifying a recipient address.)
5260 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
5261 target A or AAAA records (if not already returned) without resetting the
5262 qualify_single or search_parents options of the DNS resolver. These are
5263 inappropriate in this case because the targets of MX and SRV records must
5264 be FQDNs. A broken DNS record could cause trouble if it happened to have a
5265 target that, when qualified, matched something in the local domain. These
5266 two options are now turned off when doing these lookups.
5268 57. It seems that at least some releases of Reiserfs (which does not have the
5269 concept of a fixed number of inodes) returns zero and not -1 for the
5270 number of available inodes. This interacted badly with check_spool_inodes,
5271 which assumed that -1 was the "no such thing" setting. What I have done is
5272 to check that the total number of inodes is greater than zero before doing
5273 the test of how many are available.
5275 58. When a "warn" ACL statement has a log_message modifier, the message is
5276 remembered, and not repeated. This is to avoid a lot of repetition when a
5277 message has many recipients that cause the same warning to be written.
5278 Howewer, Exim was preserving the list of already written lines for an
5279 entire SMTP session, which doesn't seem right. The memory is now reset if a
5280 new message is started.
5282 59. The "rewrite" debugging flag was not showing the result of rewriting in the
5283 debugging output unless log_rewrite was also set.
5285 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
5286 of (int)(handle) when we know that handle contains (void *)(-1).
5288 61. The Exim daemon panic-logs an error return when it closes the incoming
5289 connection. However "connection reset by peer" seems to be common, and
5290 isn't really an error worthy of noting specially, so that particular error
5293 62. When Exim is trying to find all the local interfaces, it used to panic and
5294 die if the ioctl to get the interface flags failed. However, it seems that
5295 on at least one OS (Solaris 9) it is possible to have an interface that is
5296 included in the list of interfaces, but for which you get a failure error
5297 for this call. This happens when the interface is not "plumbed" into a
5298 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
5299 failure of the "get flags" call assumes that the interface is down.
5301 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
5302 makes life easier for people who are doing arithmetic on fields extracted
5303 from dates, where you often get leading zeros that should not be
5304 interpreted as octal.
5306 64. Added qualify_domain to the redirect router, to override the global
5309 65. If a pathologically long header line contained very many addresses (the
5310 report of this problem mentioned 10 000) and each of them was rewritten,
5311 Exim could use up a very large amount of memory. (It kept on making new
5312 copies of the header line as it rewrote, and never released the old ones.)
5313 At the expense of a bit more processing, the header rewriting function has
5314 been changed so that it no longer eats memory in this way.
5316 66. The generation of the Received: header has been moved from the time that a
5317 message starts to be received, to the time that it finishes. The timestamp
5318 in the Received: header should now be very close to that of the <= log
5319 line. There are two side-effects of this change:
5321 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
5322 logged header lines no longer include the local Received: line, because
5323 it has not yet been created. The same applies to a copy of the message
5324 that is returned to a non-SMTP sender when a message is rejected.
5326 (b) When a filter file is tested using -bf, no additional Received: header
5327 is added to the test message. After some thought, I decided that this
5330 This change does not affect the value of $received_for. It is still set
5331 after address rewriting, but before local_scan() is called.
5333 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
5335 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
5336 gave an unhelpful panic error message, and a defer error. I have managed to
5337 change this behaviour so that it now rejects any supplied certificate,
5338 which seems right, as the list of acceptable certificates is empty.
5340 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
5341 gave an unhelpful defer error. I have not managed to make this reject any
5342 supplied certificates, but the error message it gives is "no certificate
5343 supplied", which is not helpful.
5345 70. exigrep's output now also includes lines that are not associated with any
5346 message, but which match the given pattern. Implemented by a patch from
5347 Martin Sluka, which also tidied up the Perl a bit.
5349 71. Recipient callout verification, like sender verification, was using <> in
5350 the MAIL FROM command. This isn't really the right thing, since the actual
5351 sender may affect whether the remote host accepts the recipient or not. I
5352 have changed it to use the actual sender in the callout; this means that
5353 the cache record is now keyed on a recipient/sender pair, not just the
5354 recipient address. There doesn't seem to be a real danger of callout loops,
5355 since a callout by the remote host to check the sender would use <>.
5356 [SEE ABOVE: changed after hitting problems.]
5358 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
5359 temporary errors. However, in the case of such a code being given after
5360 the end of a data transmission (i.e. after ".") Exim was failing to write
5361 a retry record for the message. (Yes, there was some broken host that was
5362 actually sending 8xx at this point.)
5364 73. An unknown lookup type in a host list could cause Exim to panic-die when
5365 the list was checked. (An example that provoked this was putting <; in the
5366 middle of a list instead of at the start.) If this happened during a DATA
5367 ACL check, a -D file could be left lying around. This kind of configuration
5368 error no longer causes Exim to die; instead it causes a defer errror. The
5369 incident is still logged to the main and panic logs.
5371 74. Buglet left over from Exim 3 conversion. The message "too many messages
5372 in one connection" was written to the rejectlog but not the mainlog, except
5373 when address rewriting (yes!) was being logged.
5375 75. Added write_rejectlog option.
5377 76. When a system filter was run not as root (that is, when system_filter_user
5378 was set), the values of the $n variables were not being returned to the
5379 main process; thus, they were not subsequently available in the $sn
5382 77. Added +return_path_on_delivery log selector.
5384 78. A connection timeout was being treated differently from recipients deferred
5385 when testing hosts_max_try with a message that was older than the host's
5386 retry timeout. (The host should not be counted, thus allowing all hosts to
5387 be tried at least once before bouncing.) This may have been the cause of an
5388 occasionally reported bug whereby a message would remain on the queue
5389 longer than the retry timeout, but would be bounced if a delivery was
5390 forced. I say "may" because I never totally pinned down the problem;
5391 setting up timeout/retry tests is difficult. See also the next item.
5393 79. The ultimate address timeout was not being applied to errors that involved
5394 a combination of host plus message (for example, a timeout on a MAIL
5395 command). When an address resolved to a number of possible hosts, and they
5396 were not all tried for each delivery (e.g. because of hosts_max_try), a
5397 message could remain on the queue longer than the retry timeout.
5399 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
5402 81. Fixed an obscure SMTP outgoing bug which required at least the following
5403 conditions: (a) there was another message waiting for the same server;
5404 (b) the server returned 5xx to all RCPT commands in the first message so
5405 that the message was not completed; (c) the server dropped the connection
5406 or gave a negative response to the RSET that Exim sends to abort the
5407 transaction. The observed case was a dropped connection after DATA that had
5408 been sent in pipelining mode. That is, the server had advertised PIPELINING
5409 but was not implementing it correctly. The effect of the bug was incorrect
5410 behaviour, such as trying another host, and this could lead to a crash.
5416 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
5417 and daemon.c were passed as pointers to ints; they should have been
5418 pointers to socklen_t variables (which are typically unsigned ints).
5420 2. Some signed/unsigned type warnings in the os.c file for Linux have been
5423 3. Fixed a really odd bug that affected only the testing scheme; patching a
5424 certain fixed string in the binary changed the value of another string that
5425 happened to be identical to the end of the original first string.
5427 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
5428 name", it returns that address as the IP address. On some operating
5429 systems (e.g. Solaris), it also passes back the IP address string as the
5430 "host name". However, on others (e.g. Linux), it passes back an empty
5431 string. Exim wasn't checking for this, and was changing the host name to an
5432 empty string, assuming it had been canonicized.
5434 5. Although rare, it is permitted to have more than one PTR record for a given
5435 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
5436 all the names associated with an address, because they do in Solaris.
5437 However, it seems that they do not in Linux for data that comes from the
5438 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
5439 I found this out when I moved to a new Linux workstation and tried to run
5440 the Exim test suite.
5442 To get round this problem I have changed the code so that it now does its
5443 own call to the DNS to look up PTR records when searching for a host name.
5444 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
5445 addresses that are only in /etc/hosts are still found.
5447 This behaviour is, however, controlled by an option called host_lookup_
5448 order, which defaults to "bydns:byaddr". If people want to use the other
5449 order, or indeed, just use one or the other means of lookup, they can
5450 specify it in this variable.
5452 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
5453 some operating systems, this comes back from gethostbyaddr() as an empty
5454 string, and this is what Exim used to test for. However, it seems that in
5455 other systems, "." is yielded. Exim now tests for this case too.
5457 7. The values of check_spool_space and check_log_space are now held internally
5458 as a number of kilobytes instead of an absolute number of bytes. If a
5459 numbers is specified without 'K' or 'M', it is rounded up to the nearest
5460 kilobyte. This means that much larger values can be stored.
5462 8. Exim monitor: an attempt to get the action menu when not actually pointing
5463 at a message produces an empty menu entitled "No message selected". This
5464 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
5465 no entries in it ("Shell widget menu has zero width and/or height"). So I
5466 have added a single, blank menu entry in this case.
5468 9. Added ${quote_local_part.
5470 10. MIME decoding is now applied to the contents of Subject: header lines when
5473 11. Now that a reference to $sender_host_address automatically causes a reverse
5474 lookup to occur if necessary (4.13/18), there is no need to arrange for a
5475 host lookup before query-style lookups in lists that might use this
5476 variable. This has therefore been abolished, and the "net-" prefix is no
5477 longer necessary for query-style lookups.
5479 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
5480 have been a typo for LFLAGS, so it has been changed.
5482 13. The install script calls Exim with "-C /dev/null" in order to find the
5483 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
5484 to be output. Howeve, since Exim outputs its version number before the
5485 error, it didn't break the script. It just looked ugly. I fixed this by
5486 always allowing "-C /dev/null" if the caller is root.
5488 14. Ignore overlarge ACL variable number when reading spool file - insurance
5489 against a later release with more variables having written the file.
5491 15. The standard form for an IPv6 address literal was being rejected by EHLO.
5492 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5493 this, as well as the form without the "IPv6" on the front.
5495 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
5496 OS/Makefile-Darwin file.
5498 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
5499 only to LDAP libraries that do not have LDAP_OPT_DEREF.
5501 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
5502 variable. However, some OS use ints for inodes. I've added cast to long int
5503 to get rid of the compiler warning.
5505 19. I had forgotten to lock out "/../" in configuration file names when
5506 ALT_CONFIG_PREFIX was set.
5508 20. Routers used for verification do not need to specify transports. However,
5509 if such a router generated a host list, and callout was configured, Exim
5510 crashed, because it could not find a port number from the (non-existent)
5511 transport. It now assumes port 25 in this circumstance.
5513 21. Added the -t option to exigrep.
5515 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
5516 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
5517 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
5518 them is set, LOOKUP_LSEARCH is forced.
5520 23. "exim -bV" now outputs a list of lookups that are included in the binary.
5522 24. Added sender and host information to the "rejected by local_scan()" log
5523 line; previously there was no indication of these.
5525 25. Added .include_if_exists.
5527 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
5528 Linux. It turns out that not all file systems support this. Apparently some
5529 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
5530 do it.) To cope with this, the error EINVAL, which means that sync-ing is
5531 not supported on the file descriptor, is now ignored when Exim is trying to
5532 sync a directory. This applies only to Linux.
5534 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
5536 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
5537 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
5540 29. Added support for maildirsize files from supplied patch (modified a bit).
5542 30. The use of :fail: followed by an empty string could lead Exim to respond to
5543 sender verification failures with (e.g.):
5545 550 Verification failed for <xxx>
5546 550 Sender verify failed
5548 where the first response line was missing the '-' that indicates it is not
5549 the final line of the response.
5551 31. The loop for finding the name of the user that called Exim had a hardwired
5552 limit of 10; it now uses the value of finduser_retries, which is used for
5553 all other user lookups.
5555 32. Added $received_count variable, available in data and not_smtp ACLs, and at
5558 33. Exim was neglecting to zero errno before one call of strtol() when
5559 expanding a string and expecting an integer value. On some systems this
5560 resulted in spurious "integer overflow" errors. Also, it was casting the
5561 result into an int without checking.
5563 34. Testing for a connection timeout using "timeout_connect" in the retry rules
5564 did not work. The code looks as if it has *never* worked, though it appears
5565 to have been documented since at least releast 1.62. I have made it work.
5567 35. The "timeout_DNS" error in retry rules, also documented since at least
5568 1.62, also never worked. As it isn't clear exactly what this means, and
5569 clearly it isn't a major issue, I have abolished the feature by treating it
5570 as "timeout", and writing a warning to the main and panic logs.
5572 36. The display of retry rules for -brt wasn't always showing the error code
5575 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
5576 timeout_connect_A, timeout_connect_MX.
5578 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
5579 to the empty sender.
5581 39. The daemon was not analysing the content of -oX till after it had closed
5582 stderr and disconnected from the controlling terminal. This meant that any
5583 syntax errors were only noted on the panic log, and the return code from
5584 the command was 0. By re-arranging the code a little, I've made the
5585 decoding happen first, so such errors now appear on stderr, and the return
5586 code is 1. However, the actual setting up of the sockets still happens in
5587 the disconnected process, so errors there are still only recorded on the
5590 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
5591 connections (as happens on some IP stacks) was logged at start up time as
5592 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
5593 it from "IPv6 and IPv4", which means that two separate sockets are being
5596 41. The debug output for gethostbyname2() or getipnodebyname() failures now
5597 says whether AF_INET or AF_INET6 was passed as an argument.
5599 42. Exiwhat output was messed up when time zones were included in log
5602 43. Exiwhat now gives more information about the daemon's listening ports,
5603 and whether -tls-on-connect was used.
5605 44. The "port" option of the smtp transport is now expanded.
5607 45. A "message" modifier in a "warn" statement in a non-message ACL was being
5608 silently ignored. Now an error message is written to the main and panic
5611 46. There's a new ACL modifier called "logwrite" which writes to a log file
5612 as soon as it is encountered.
5614 47. Added $local_user_uid and $local_user_gid at routing time.
5616 48. Exim crashed when trying to verify a sender address that was being
5619 49. Exim was recognizing only a space character after ".include". It now also
5620 recognizes a tab character.
5622 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
5623 extracting the relevant information from the specification. The man page no
5624 longer contains scrambled data for the -d option, and I've added a section
5625 at the front about calling Exim under different names.
5627 51. Added "extra_headers" argument to the "mail" command in filter files.
5629 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
5632 53. Installed eximstats 1.29.
5634 54. Added transport_filter_timeout as a generic transport option.
5636 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
5637 Cc: header lines. This was required by RFC 822, but it not required by RFC
5640 56. Exim used to add From:, Date:, and Message-Id: header lines to any
5641 incoming messages that did not have them. Now it does so only if the
5642 message originates locally, that is, if there is no associated remote host
5643 address. When Resent- header lines are present, this applies to the Resent-
5644 lines rather than the non-Resent- lines.
5646 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
5647 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
5649 58. Messages for configuration errors now include the name of the main
5650 configuration file - useful now that there may be more than one file in a
5651 list (.included file names were always shown).
5653 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
5654 for those rare installations that do not start the daemon as root or run it
5655 setuid root. I've cut out the call to initgroups() if the daemon is not
5658 60. The Exim user and group can now be bound into the binary as text strings
5659 that are looked up at the start of Exim's processing.
5661 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
5663 62. Added $mailstore_basename variable.
5665 63. Installed patch to sieve.c from Michael Haardt.
5667 64. When Exim failed to open the panic log after failing to open the main log,
5668 the original message it was trying to log was written to stderr and debug
5669 output, but if they were not available (the usual case in production), it
5670 was lost. Now it is written to syslog before the two lines that record the
5671 failures to open the logs.
5673 65. Users' Exim filters run in subprocesses under the user's uid. It is
5674 possible for a "deliver" command or an alias in a "personal" command to
5675 provoke an address rewrite. If logging of address rewriting is configured,
5676 this fails because the process is not running as root or exim. There may be
5677 a better way of dealing with this, but for the moment (because 4.30 needs
5678 to be released), I have disabled address rewrite logging when running a
5679 filter in a non-root, non-exim process.
5685 1. The buildconfig auxiliary program wasn't quoting the value set for
5686 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5687 not defined. This bug was masked in 4.22 by the effect that was fixed in
5690 2. Some messages that were rejected after a message id was allocated were
5691 shown as "incomplete" by exigrep. It no longer does this for messages that
5692 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5694 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5695 have allow_domain_literals set, the ID did not get logged in the <= line.
5696 Domain literals are now always recognized in Message-ID: header lines.
5698 4. The first argument for a ${extract expansion item is the key name or field
5699 number. Leading and trailing spaces in this item were not being ignored,
5700 causing some misleading effects.
5702 5. When deliver_drop_privilege was set, single queue runner processes started
5703 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5704 same command in the process it spins off) were not dropping privilege.
5706 6. When the daemon running as "exim" started a queue runner, it always
5707 re-executed Exim in the spun-off process. This is a waste of effort when
5708 deliver_drop_privilege is set. The new process now just calls the
5709 queue-runner function directly.
5715 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5718 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5719 ignored. Though the use of -oP was forcing the writing of a pid file, it
5720 was always written to the default place.
5722 3. If the message "no IP address found for host xxxx" is generated during
5723 incoming verification, it is now followed by identification of the incoming
5724 connection (so you can more easily find what provoked it).
5726 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5728 5. Added some features to "harden" Exim a bit more against certain attacks:
5730 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5731 be put in Local/Makefile. This is like the never_users runtime option,
5732 but it cannot be overridden. The default setting is "root".
5734 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5735 prefix string with which any file named in a -C command line option
5738 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5739 is retained for -C and -D only if the caller of Exim is root. Without
5740 it, the exim user may also use -C and -D and retain privilege.
5742 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5743 command line option is disabled.
5745 6. Macro names set by the -D option must start with an upper case letter, just
5746 like macro names defined in the configuration file.
5748 7. Added "dereference=" facility to LDAP.
5750 8. Two instances of the typo "uknown" in the source files are fixed.
5752 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5753 the Configure-Makefile script screwed up while processing it.
5755 10. Incorporated PCRE 4.4.
5757 11. The SMTP synchronization check was not operating right at the start of an
5758 SMTP session. For example, it could not catch a HELO sent before the client
5759 waited for the greeting. There is now a check for outstanding input at the
5760 point when the greeting is written. Because of the duplex, asynchronous
5761 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5762 way, but not yet received, when the check is performed.
5764 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5765 on TCP/IP sockets, because this apparently causes some broken clients to
5768 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5769 unchanged) from the Cygwin maintainer.
5771 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5772 was supported instead of testing for mbx. Effectively a typo.
5774 15. The spa authenticator server code was not checking that the input it
5775 received was valid base64.
5777 16. The debug output line for the "set" modifier in ACLs was not showing the
5778 name of the variable that was being set.
5780 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5782 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5783 lookup on its own. Something else was needed to trigger the lookup. For
5784 example, a match in host_lookup or the need for a host name in a host list.
5785 Now, if $sender_host_name is referenced and the host name has not yet been
5786 looked up, a lookup is performed. If the lookup fails, the variable remains
5787 empty, and $host_lookup_failed is set to "1".
5789 19. Added "eqi" as a case-independent comparison operator.
5791 20. The saslauthd authentication condition could segfault if neither service
5792 nor realm was specified.
5794 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5795 error message that was logged was misleading, and incoming SMTP
5796 connections were dropped. The message is now more accurate, and temporary
5797 errors are given to SMTP connections.
5799 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5800 (except RSET) with a 421 error, until QUIT is received. However, it was
5801 failing to send a response to QUIT.
5803 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5804 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5805 ACL is now run after the helo_try_verify_hosts code.
5807 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5808 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5809 case-independent, so other case variants are also recognized). Apparently
5810 some systems use these upper case variants.
5812 25. If more than two messages were waiting for the same host, and a transport
5813 filter was specified for the transport, Exim sent two messages over the
5814 same TCP/IP connection, and then failed with "socket operation on non-
5815 socket" when it tried to send the third.
5817 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5819 27. The extern definition of crypt16() in expand.c was not being excluded when
5820 the OS had its own crypt16() function.
5822 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5823 as a preferred synonym for return_size_limit, both as an option and as an
5826 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5828 30. Changed the default configuration ACL to relax the local part checking rule
5829 for addresses that are not in any local domains. For these addresses,
5830 slashes and pipe symbols are allowed within local parts, but the sequence
5831 /../ is explicitly forbidden.
5833 31. SPA server authentication was not clearing the challenge buffer before
5836 32. log_message in a "warn" ACL statement was writing to the reject log as
5837 well as to the main log, which contradicts the documentation and doesn't
5838 seem right (because no rejection is happening). So I have stopped it.
5840 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
5841 However, I am unable to do any testing of this.
5843 34. Fixed an infelicity in the appendfile transport. When checking directories
5844 for a mailbox, to see if any needed to be created, it was accidentally
5845 using path names with one or more superfluous leading slashes; tracing
5846 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
5848 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
5849 contents are added to the log line that is written for every discarded
5850 recipient. (Previously a log_message setting was ignored.)
5852 36. The ${quote: operator now quotes the string if it is empty.
5854 37. The install script runs exim in order to find its version number. If for
5855 some reason other than non-existence or emptiness, which it checks, it
5856 could not run './exim', it was installing it with an empty version number,
5857 i.e. as "exim-". This error state is now caught, and the installation is
5860 38. An argument was missing from the function that creates an error message
5861 when Exim fails to connect to the socket for saslauthd authentication.
5862 This could cause Exim to crash, or give a corrupted message.
5864 39. Added isip, isip4, and isip6 to ${if conditions.
5866 40. The ACL variables $acl_xx are now saved with the message, and can be
5867 accessed later in routers, transports, and filters.
5869 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
5870 strings in the file are not string-expanded.
5872 42. If a MAIL command specified a SIZE value that was too large to fit into an
5873 int variable, the check against message_size_limit failed. Such values are
5874 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
5875 day this will have to be increased, but I don't think I want to be around
5876 when emails are that large.
5883 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
5884 iconv() is not standard in FreeBSD.
5886 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
5887 IPv6 enabled. The observed symptom was a segmentation fault on return from
5888 the function os_common_find_running_interfaces() in src/os.c.
5890 3. In the check_special_case() function in daemon.c I had used "errno" as an
5891 argument name, which causes warnings on some systems. This was basically a
5892 typo, since it was named "eno" in the comments!
5894 4. The code that waits for the clock to tick (at a resolution of some fraction
5895 of a second) so as to ensure message-id uniqueness was always waiting for
5896 at least one whole tick, when it could have waited for less. [This is
5897 almost certainly not relevant at current processor speeds, where it is
5898 unlikely to ever wait at all. But we try to future-proof.]
5900 5. The function that sleeps for a time interval that includes fractions of a
5901 second contained a race. It did not block SIGALRM between setting the
5902 timer, and suspending (a couple of lines later). If the interval was short
5903 and the sigsuspend() was delayed until after it had expired, the suspension
5904 never ended. On busy systems this could lead to processes getting stuck for
5907 6. Some uncommon configurations may cause a lookup to happen in a queue runner
5908 process, before it forks any delivery processes. The open lookup caching
5909 mechanism meant that the open file or database connection was passed into
5910 the delivery process. The problem was that delivery processes always tidy
5911 up cached lookup data. This could cause a problem for the next delivery
5912 process started by the queue runner, because the external queue runner
5913 process does not know about the closure. So the next delivery process
5914 still has data in the lookup cache. In the case of a file lookup, there was
5915 no problem because closing a file descriptor in a subprocess doesn't affect
5916 the parent. However, if the lookup was caching a connection to a database,
5917 the connection was closed, and the second delivery process was likely to
5918 see errors such as "PGSQL: query failed: server closed the connection
5919 unexpectedly". The problem has been fixed by closing all cached lookups
5920 in a queue runner before running a delivery process.
5922 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
5923 seem to have the "const" qualifier which it has on other OS. I've
5926 8. Change 4.21/2 was too strict. It is only if there are two authenticators
5927 *of the same type* (client or server) with the same public name that an
5928 error should be diagnosed.
5930 9. When Exim looked up a host name for an IP address, but failed to find the
5931 original IP address when looking up the host name (a safety check), it
5932 output the message "<ip address> does not match any IP for NULL", which was
5933 confusing, to say the least. The bug was that the host name should have
5934 appeared instead of "NULL".
5936 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
5937 user that is built into the binary, and the -C or -D options is used, root
5938 privilege is dropped before the configuration file is read. In addition,
5939 logging is switched to stderr instead of the normal log files. If the
5940 configuration then re-defines the Exim user, the unprivileged environment
5941 is probably not what is expected, so Exim logs a panic warning message (but
5944 However, if deliver_drop_privilege is set, the unprivileged state may well
5945 be exactly what is intended, so the warning has been cut out in that case,
5946 and Exim is allowed to try to write to its normal log files.
5952 1. smtp_return_error_details was not giving details for temporary sender
5953 or receiver verification errors.
5955 2. Diagnose a configuration error if two authenticators have the same public
5958 3. Exim used not to create the message log file for a message until the first
5959 delivery attempt. This could be confusing when incoming messages were held
5960 for policy or load reasons. The message log file is now created at the time
5961 the message is received, and an initial "Received" line is written to it.
5963 4. The automatically generated man page for command line options had a minor
5964 bug that caused no ill effects; however, a more serious problem was that
5965 the procedure for building the man page automatically didn't always
5966 operate. Consequently, release 4.20 contains an out-of-date version. This
5967 shouldn't happen again.
5969 5. When building Exim with embedded Perl support, the script that builds the
5970 Makefile was calling 'perl' to find its compile-time parameters, ignoring
5971 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
5973 6. The freeze_tell option was not being used for messages that were frozen on
5974 arrival, either by an ACL or by local_scan().
5976 7. Added the smtp_incomplete_transaction log selector.
5978 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
5979 was accepting AUTH without a new EHLO.
5981 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
5982 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
5985 10. Logging of TCP/IP connections (when configured) now happens in the main
5986 daemon process instead of the child process, so that the TCP/IP connection
5987 count is more accurate (but it can never be perfect).
5989 11. The use of "drop" in a nested ACL was not being handled correctly in the
5990 outer ACL. Now, if condition failure induced by the nested "drop" causes
5991 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
5992 or "require"), the connection is dropped.
5994 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
5995 that yield "discard" can now be used with an "accept" or a "discard" verb,
5996 but an error is generated for any others (because I can't see a useful way
5997 to define what should happen).
5999 13. When an ACL is read dynamically from a file (or anywhere else), the lines
6000 are now processed in the same way as lines in the Exim configuration file.
6001 In particular, continuation lines are supported.
6003 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
6005 15. Added -ti meaning -t -i.
6007 16. Check for letters, digits, hyphens, and dots in the names of dnslist
6008 domains, and warn by logging if others are found.
6010 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
6011 returned from GIFCONF when Exim is trying to find the list of interfaces on
6012 a host. The code in os.c has been modified to copy each ifreq to an aligned
6013 structure in all cases.
6015 Also, in some cases, the returned ifreq's were being copied to a 'struct
6016 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
6017 means the last couple of bytes of an IPv6 address could be chopped if the
6018 ifreq contained only a normal sockaddr (14 bytes storage).
6020 18. Named domain lists were not supported in the hosts_treat_as_local option.
6021 An entry such as +xxxx was not recognized, and was treated as a literal
6024 19. Ensure that header lines added by a DATA ACL are included in the reject log
6025 if the ACL subsequently rejects the message.
6027 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
6028 MD5 (which is deprecated).
6030 21. When testing a filter file using -bf, Exim was writing a message when it
6031 took the sender from a "From " line in the message, but it was not doing so
6032 when it took $return_path from a Return-Path: header line. It now does.
6034 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
6035 with a valid header line field name (a series of printing characters
6036 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
6038 23. Changed "disc" in the source to "disk" to conform to the documentation and
6039 the book and for uniformity.
6041 24. Ignore Sendmail's -Ooption=value command line item.
6043 25. When execve() failed while trying to run a command in a pipe transport,
6044 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
6045 could be confused with a return value of 69 from the command itself. This
6046 has been changed to 127, the value the shell returns if it is asked to run
6047 a non-existent command. The wording for the related log line suggests a
6048 non-existent command as the problem.
6050 26. If received_header_text expands to an empty string, do not add a Received:
6051 header line to the message. (Well, it adds a token one on the spool, but
6052 marks it "old" so that it doesn't get used or transmitted.)
6054 27. Installed eximstats 1.28 (addition of -nt option).
6056 28. There was no check for failure on the call to getsockname() in the daemon
6057 code. This can fail if there is a shortage of resources on the system, with
6058 ENOMEM, for example. A temporary error is now given on failure.
6060 29. Contrary to the C standard, it seems that in some environments, the
6061 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
6062 program. Exim now does this explicitly; it affects the formatting of
6063 timestamps using strftime().
6065 30. If exiqsumm was given junk data, it threw up some uninitialized variable
6066 complaints. I've now initialized all the variables, to avoid this.
6068 32. Header lines added by a system filter were not being "seen" during
6069 transport-time rewrites.
6071 33. The info_callback() function passed to OpenSSL is set up with type void
6072 (*)(SSL *, int, int), as described somewhere. However, when calling the
6073 function (actually a macro) that sets it up, the type void(*)() is
6074 expected. I've put in a cast to prevent warnings from picky compilers.
6076 34. If a DNS black list lookup found a CNAME record, but there were no A
6077 records associated with the domain it pointed at, Exim crashed.
6079 35. If a DNS black list lookup returned more than one A record, Exim ignored
6080 all but the first. It now scans all returned addresses if a particular IP
6081 value is being sought. In this situation, the contents of the
6082 $dnslist_value variable are a list of all the addresses, separated by a
6085 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
6086 to accept a host name and all its aliases if the forward lookup for any of
6087 them yielded the IP address of the incoming connection. Now it accepts only
6088 those names whose forward lookup yields the correct IP address. Any other
6089 names are discarded. This closes a loophole whereby a rogue DNS
6090 administrator could create reverse DNS records to break through a
6091 wildcarded host restriction in an ACL.
6093 37. If a user filter or a system filter that ran in a subprocess used any of
6094 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
6095 the wrong values were passed to the pipe command ($thisaddress had the
6096 value of $0, $0 had the value of $1, etc). This bug was introduced by
6097 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
6099 38. Improved the line breaking for long SMTP error messages from ACLs.
6100 Previously, if there was no break point between 40 and 75 characters, Exim
6101 left the rest of the message alone. Two changes have been made: (a) I've
6102 reduced the minimum length to 35 characters; (b) if it can't find a break
6103 point between 35 and 75 characters, it looks ahead and uses the first one
6104 that it finds. This may give the occasional overlong line, but at least the
6105 remaining text gets split now.
6107 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
6108 file descriptors might be low, and that setting 1000 would always raise it.
6109 It turns out that in some environments, the limit is already over 1000 and
6110 that lowering it causes trouble. So now Exim takes care not to decrease it.
6112 40. When delivering a message, the value of $return_path is set to $sender_
6113 address at the start of routing (routers may change the value). By an
6114 oversight, this default was not being set up when an address was tested by
6115 -bt or -bv, which affected the outcome if any router or filter referred to
6118 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
6119 log only when "message" or "log_message" are set. However, if one of the
6120 conditions was an address verification, or a call to a nested ACL, the
6121 messages generated by the underlying test were being passed through. This
6122 no longer happens. The underlying message is available in $acl_verify_
6123 message for both "message" and "log_message" expansions, so it can be
6124 passed through if needed.
6126 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
6127 new expansion $bh_ to give the encoded byte string without charset
6128 translation. Translation happens only if iconv() is available; HAVE_ICONV
6129 indicates this at build time. HEADERS_CHARSET gives the charset to
6130 translate to; headers_charset can change it in the configuration, and
6131 "headers charset" can change it in an individual filter file.
6133 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
6134 that creates RFC 2047 encoded "words" labels them as that charset instead
6135 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
6136 expansion operator; (ii) when Exim creates a From: line for a local
6137 message; (iii) when a header line is rewritten to include a "phrase" part.
6139 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
6140 buggy, causing it to skip the first lines of messages whose message ID
6141 ended in 'D'. This would not have bitten before Exim release 4.14, because
6142 message IDs were unlikely to end in 'D' before then. The effect was to have
6143 incorrect size information for certain domains.
6145 45. #include "config.h" was missing at the start of the crypt16.c module. This
6146 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
6149 46. If there was a timeout during a "random" callout check, Exim treated it as
6150 a failure of the random address, and carried on sending RSET and the real
6151 address. If the delay was just some slowness somewhere, the response to the
6152 original RCPT would be taken as a response to RSET and so on, causing
6153 mayhem of various kinds.
6155 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
6156 when I implemented it. It didn't allow for the fact that some option values
6157 may legitimatetly be negative (e.g. size_addition), and it didn't even do
6158 the right test for positive values.
6160 48. Domain names in DNS records are case-independent. Exim always looks them up
6161 in lower case. Some resolvers return domain names in exactly the case they
6162 appear in the zone file, that is, they may contain uppercase letters. Not
6163 all resolvers do this - some return always lower case. Exim was treating a
6164 change of case by a resolver as a change of domain, similar to a widening
6165 of a domain abbreviation. This triggered its re-routing code and so it was
6166 trying to route what was effectively the same domain again. This normally
6167 caused routing to fail (because the router wouldn't handle the domain
6168 twice). Now Exim checks for this case specially, and just changes the
6169 casing of the domain that it ultimately uses when it transmits the message
6172 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
6175 50. If a filter generated a file delivery with a non-absolute name (possible if
6176 no home directory exists for the router), the forbid_file option was not
6179 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
6180 the existing equality matching.
6182 52. Exim was using ints instead of ino_t variables in some places where it was
6183 dealing with inode numbers.
6185 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
6186 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
6187 called TMPDIR, and if it finds it is different, it changes its value.
6189 54. The smtp_printf() function is now made available to local_scan() so
6190 additional output lines can be written before returning. There is also an
6191 smtp_fflush() function to enable the detection of a dropped connection.
6192 The variables smtp_input and smtp_batched_input are exported to
6195 55. Changed the default runtime configuration: the message "Unknown user"
6196 has been removed from the ACL, and instead placed on the localuser router,
6197 using the cannot_route_message feature. This means that any verification
6198 failures that generate their own messages won't get overridden. Similarly,
6199 the "Unrouteable address" message that was in the ACL for unverifiable
6200 relay addresses has also been removed.
6202 56. Added hosts_avoid_esmtp to the smtp transport.
6204 57. The exicyclog script was not checking for the esoteric option
6205 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
6206 will work only if exicyclog is run under the appropriate euid.
6208 58. Following a discussion on the list, the rules by which Exim recognises line
6209 endings on incoming messages have been changed. The -dropcr and drop_cr
6210 options are now no-ops, retained only for backwards compatibility. The
6211 following line terminators are recognized: LF CRLF CR. However, special
6212 processing applies to CR:
6214 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
6215 nor a local message in the state where . is a terminator.
6217 (ii) If a bare CR is encountered in a header line, an extra space is added
6218 after the line terminator so as not to end the header. The reasoning
6219 behind this is that bare CRs in header lines are most likely either
6220 to be mistakes, or people trying to play silly games.
6222 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
6223 was being incorrectly given as 18 bytes larger than it should have been.
6224 This is a VOB (very old bug).
6226 60. This may never have affected anything current, but just in case it has:
6227 When the local host is found other than at the start of a list of hosts,
6228 the local host, those with the same MX, and any that follow, are discarded.
6229 When the list in question was part of a longer list of hosts, the following
6230 hosts (not currently being processed) were also being discarded. This no
6231 longer happens. I'm not sure if this situation could ever has previously
6234 61. Added the "/MX" feature to lists of hosts in the manualroute and query
6237 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
6238 header. This is something that is recommended in a new Internet Draft, and
6239 is something that is documented as being done by Sendmail. There are two
6240 possible values. For messages generated by the autoreply transport, Exim
6243 Auto-Submitted: auto-replied
6245 whereas for all other generated messages (e.g. bounces) it adds
6247 Auto-Submitted: auto-generated
6249 63. The "personal" condition in filters now includes a test for the
6250 Auto-Submitted: header. If it contains the string "auto-" the message it
6251 not considered personal.
6253 64. Added rcpt_include_affixes as a generic transport option.
6255 65. Added queue_only_override (default true).
6257 66. Added the syslog_duplication option.
6259 67. If what should have been the first header line of a message consisted of
6260 a space followed by a colon, Exim was mis-interpreting it as a header line.
6261 It isn't of course - it is syntactically invalid and should therefore be
6262 treated as the start of the message body. The misbehaviour could have
6263 caused a number of strange effects, including loss of data in subsequent
6264 header lines, and spool format errors.
6266 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
6267 client host had authenticated. This control can now be exercised by an ACL
6268 for more flexibility.
6270 69. By default, callouts do not happen when testing with -bh. There is now a
6271 variant, -bhc, which does actually run the callout code, including
6272 consulting and updating the callout cache.
6274 70. Added support for saslauthd authentication, courtesy of Alexander
6277 71. If statvfs() failed on the spool or log directories while checking their
6278 size for availability, Exim confusingly gave the error "space shortage".
6279 Furthermore, in debugging mode it crashed with a floating point exception.
6280 These checks are done if check_{spool,log}_{space,inodes} are set, and when
6281 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
6282 serious problem, Exim now writes to the main and panic logs when this
6283 happens, with details of the failure. It then refuses to accept the
6284 incoming message, giving the message "spool directory problem" or "log
6285 directory problem" with a 421 code for SMTP messages.
6287 72. When Exim is about to re-exec itself, it ensures that the file descriptors
6288 0, 1, and 2 exist, because some OS complain for execs without them (see
6289 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
6290 descriptors. However, the code omitted to check that the open succeeded,
6291 causing mysterious errors if for some reason the permissions on /dev/null
6292 got screwed. Now Exim writes a message to the main and panic logs, and
6293 bombs out if it can't open /dev/null.
6295 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
6296 interact so that it is all more flexible. It is supposed to remain
6297 backwards compatible. Also added extra_local_interfaces.
6299 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
6300 to bomb out with an assertion failure - to the client this appears as a
6301 connection drop. This problem occurs in the part of the code that was taken
6302 from the Samba project. Fortunately, the assertion is in a very simple
6303 function, so I have fixed this by reproducing the function inline in the
6304 one place where it is called, and arranging for authentication to fail
6305 instead of killing the process with assert().
6307 75. The SPA client code was not working when the server requested OEM rather
6308 than Unicode encoding.
6310 76. Added code to make require_files with a specific uid setting more usable in
6311 the case where statting the file as root fails - usually a non-root-mounted
6312 NFS file system. When this happens and the failure is EACCES, Exim now
6313 forks a subprocess and does the per-uid checking as the relevant uid.
6315 77. Added process_log_path.
6317 78. If log_file_path was not explicitly set, a setting of check_log_space or
6318 check_log_inodes was ignored.
6320 79. If a space check for the spool or log partitions fails, the incident is now
6321 logged. Of course, in the latter case the data may get lost...
6323 80. Added the %p formatting code to string_format() so that it can be used to
6324 print addresses in debug_print(). Adjusted all the address printing in the
6325 debugging in store.c to use %p rather than %d.
6327 81. There was a concern that a line of code in smtp_in.c could overflow a
6328 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
6329 initially expressed, the concern was not well-founded, because trailing
6330 spaces are removed early. However, if the trailing spaces were followed by
6331 a NULL, they did not get removed, so the overflow was possible. Two fixes
6334 (a) I re-wrote the offending code in a cleaner fashion.
6335 (b) If an incoming SMTP command contains a NULL character, it is rejected
6338 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
6339 runs initgroups(), so that if the Exim user is in any additional groups,
6340 they will be used during message reception.
6346 The change log for 4.20 and earlier releases has been archived.
projects / exim.git / blob