1 Change log file for Exim from version 4.21
2 -------------------------------------------
8 TF/01 Correctly close the server side of TLS when forking for delivery.
10 When a message was received over SMTP with TLS, Exim failed to clear up
11 the incoming connection properly after forking off the child process to
12 deliver the message. In some situations the subsequent outgoing
13 delivery connection happened to have the same fd number as the incoming
14 connection previously had. Exim would try to use TLS and fail, logging
15 a "Bad file descriptor" error.
17 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
18 utilities have not been installed.
20 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
21 temporary space as the ACL may create new global variables.
23 TL/01 LDAP support uses per connection or global context settings, depending
24 upon the detected version of the libraries at build time.
26 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
27 to extract and use the src ip:port in logging and expansions as if it
28 were a direct connection from the outside internet.
30 JH/02 Add ${listextract {number}{list}{success}{fail}}.
32 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
33 Properly escape header and check for NULL return.
35 JH/03 Add tls_{,try_}verify_hosts to smtp transport. OpenSSL only.
41 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
43 PP/02 Make -n do something, by making it not do something.
44 When combined with -bP, the name of an option is not output.
46 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
49 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
50 $sender_host_name and config options to manage this, and basic check
53 PP/05 DSCP support for outbound connections and control modifier for inbound.
55 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
56 (Only plugin which currently uses this is kerberos4, which nobody should
57 be using, but we should make it available and other future plugins might
58 conceivably use it, even though it would break NAT; stuff *should* be
59 using channel bindings instead).
61 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
62 name; added for Sendmail compatibility; requires admin caller.
63 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
64 just ignore it); requires trusted caller.
65 Also parse but ignore: -Ac -Am -X<logfile>
68 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
70 TL/02 Add +smtp_confirmation as a default logging option.
72 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
73 Patch by Magnus Holmgren from 2007-02-20.
75 TL/04 Bugzilla 1281 - Spec typo.
76 Bugzilla 1283 - Spec typo.
77 Bugzilla 1290 - Spec grammar fixes.
79 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
81 TL/06 Add Experimental DMARC support using libopendmarc libraries.
83 TL/07 Fix an out of order global option causing a segfault. Reported to dev
84 mailing list by by Dmitry Isaikin.
86 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
88 JH/02 Support "G" suffix to numbers in ${if comparisons.
90 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
92 NM/01 Bugzilla 1197 - Spec typo
93 Bugzilla 1196 - Spec examples corrections
95 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
97 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
98 gnutls_enable_pkcs11, but renamed to more accurately indicate its
101 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
102 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
104 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
105 "acl {{name}{arg}...}", and optional args on acl condition
108 JH/05 Permit multiple router/transport headers_add/remove lines.
110 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
112 JH/07 Avoid using a waiting database for a single-message-only transport.
113 Performance patch from Paul Fisher. Bugzilla 1262.
115 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
118 JH/09 Add $headers_added variable, with content from use of ACL modifier
119 add_header (but not yet added to the message). Bugzilla 199.
121 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
122 Pulled from Bugzilla 817 by Wolfgang Breyha.
124 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
126 (nb: this is the same fix as in Exim 4.80.1)
128 JH/11 Add A= logging on delivery lines, and a client_set_id option on
131 JH/12 Add optional authenticated_sender logging to A= and a log_selector
134 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
136 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
137 advertise SMTP AUTH mechanism to us, instead of a generic
138 protocol violation error. Also, make Exim more robust to bad
139 data from the Dovecot auth socket.
141 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
143 When a queue runner is handling a message, Exim first routes the
144 recipient addresses, during which it prunes them based on the retry
145 hints database. After that it attempts to deliver the message to
146 any remaining recipients. It then updates the hints database using
149 So if a recipient address works intermittently, it can get repeatedly
150 deferred at routing time. The retry hints record remains fresh so the
151 address never reaches the final cutoff time.
153 This is a fairly common occurrence when a user is bumping up against
154 their storage quota. Exim had some logic in its local delivery code
155 to deal with this. However it did not apply to per-recipient defers
156 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
158 This change adds a proper retry rule check during routing so that the
159 final cutoff time is checked against the message's age. We only do
160 this check if there is an address retry record and there is not a
161 domain retry record; this implies that previous attempts to handle
162 the address had the retry_use_local_parts option turned on. We use
163 this as an approximation for the destination being like a local
164 delivery, as in LMTP.
166 I suspect this new check makes the old local delivery cutoff check
167 redundant, but I have not verified this so I left the code in place.
169 TF/02 Correct gecos expansion when From: is a prefix of the username.
171 Test 0254 submits a message to Exim with the header
175 When I ran the test suite under the user fanf2, Exim expanded
176 the header to contain my full name, whereas it should have added
177 a Resent-Sender: header. It erroneously treats any prefix of the
178 username as equal to the username.
180 This change corrects that bug.
182 GF/01 DCC debug and logging tidyup
183 Error conditions log to paniclog rather than rejectlog.
184 Debug lines prefixed by "DCC: " to remove any ambiguity.
186 TF/03 Avoid unnecessary rebuilds of lookup-related code.
188 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
189 Bug spotted by Jeremy Harris; was flawed since initial commit.
190 Would have resulted in OCSP responses post-SNI triggering an Exim
191 NULL dereference and crash.
193 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
195 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
196 Bug detection, analysis and fix by Samuel Thibault.
197 Bugzilla 1331, Debian bug #698092.
199 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
201 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
202 Server implementation by Todd Lyons, client by JH.
203 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
204 config variable "prdr_enable" controls whether the server
205 advertises the facility. If the client requests PRDR a new
206 acl_data_smtp_prdr ACL is called once for each recipient, after
207 the body content is received and before the acl_smtp_data ACL.
208 The client is controlled by bolth of: a hosts_try_prdr option
209 on the smtp transport, and the server advertisement.
210 Default client logging of deliveries and rejections involving
211 PRDR are flagged with the string "PRDR".
213 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
214 fclose(). Diagnosis by Todd Lyons.
216 PP/17 Update configure.default to handle IPv6 localhost better.
217 Patch by Alain Williams (plus minor tweaks).
220 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
221 This is now consistent with GnuTLS, and is now documented: the
222 previous undocumented portable approach to treating the option as
223 unset was to force an expansion failure. That still works, and
224 an empty string is now equivalent.
226 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
227 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
228 not performing validation itself.
230 PP/20 Added force_command boolean option to pipe transport.
231 Patch from Nick Koston, of cPanel Inc.
233 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
236 TF/04 Added udpsend ACL modifer and hexquote expansion operator
238 PP/21 Fix eximon continuous updating with timestamped log-files.
239 Broken in a format-string cleanup in 4.80, missed when I repaired the
240 other false fix of the same issue.
241 Report and fix from Heiko Schlichting.
244 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
245 Report from Prashanth Katuri.
247 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
248 It's SecureTransport, so affects any MacOS clients which use the
249 system-integrated TLS libraries, including email clients.
251 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
252 using a MIME ACL for non-SMTP local injection.
253 Report and assistance in diagnosis by Warren Baker.
255 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
257 JH/16 Fix comparisons for 64b. Bugzilla 1385.
259 TL/09 Add expansion variable $authenticated_fail_id to keep track of
260 last id that failed so it may be referenced in subsequent ACL's.
262 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
265 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
266 ldap library initialization, allowing self-signed CA's to be
267 used. Also properly sets require_cert option later in code by
268 using NULL (global ldap config) instead of ldap handle (per
269 session). Bug diagnosis and testing by alxgomz.
271 TL/12 Enhanced documentation in the ratelimit.pl script provided in
272 the src/util/ subdirectory.
274 TL/13 Bug 1301 - Imported transport SQL logging patch from Axel Rau
275 renamed to Transport Post Delivery Action by Jeremy Harris, as
278 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
279 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
280 redis_servers = needs to be configured which will be used by the redis
281 lookup. Patch from Warren Baker, of The Packet Hub.
283 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
285 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
286 hostname or reverse DNS when processing a host list. Used suggestions
287 from multiple comments on this bug.
289 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
291 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
292 Missed a few lines, added it to make the runtest require no keyboard
295 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
296 contains upper case chars. Make router use caseful_local_part.
298 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
299 support when GnuTLS has been built with p11-kit.
305 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
307 This, or similar/improved, will also be change PP/11 of 4.82.
313 PP/01 Handle short writes when writing local log-files.
314 In practice, only affects FreeBSD (8 onwards).
315 Bugzilla 1053, with thanks to Dmitry Isaikin.
317 NM/01 Bugzilla 949 - Documentation tweak
319 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
322 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
324 PP/02 Implemented gsasl authenticator.
326 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
328 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
329 `pkg-config foo` for cflags/libs.
331 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
332 with rest of GSASL and with heimdal_gssapi.
334 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
335 `pkg-config foo` for cflags/libs for the TLS implementation.
337 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
338 properties get this fed in as external SSF. A number of robustness
339 and debugging improvements to the cyrus_sasl authenticator.
341 PP/08 cyrus_sasl server now expands the server_realm option.
343 PP/09 Bugzilla 1214 - Log authentication information in reject log.
344 Patch by Jeremy Harris.
346 PP/10 Added dbmjz lookup type.
348 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
350 PP/12 MAIL args handles TAB as well as SP, for better interop with
351 non-compliant senders.
352 Analysis and variant patch by Todd Lyons.
354 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
355 Bug report from Lars Müller <lars@samba.org> (via SUSE),
356 Patch from Dirk Mueller <dmueller@suse.com>
358 PP/13 tls_peerdn now print-escaped for spool files.
359 Observed some $tls_peerdn in wild which contained \n, which resulted
360 in spool file corruption.
362 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
363 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
364 or write after TLS renegotiation, which otherwise led to messages
367 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
368 as a tracking header (ie: a signed header comes before the signature).
369 Patch from Wolfgang Breyha.
371 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
372 comma-sep list; embedded commas doubled.
374 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
376 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
378 Report and patch from Dmitry Banschikov.
380 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
381 Removed SSL_clear() after SSL_new() which led to protocol negotiation
382 failures. We appear to now support TLS1.1+ with Exim.
384 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
385 lets Exim select keys and certificates based upon TLS SNI from client.
386 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
387 before an outbound SMTP session. New log_selector, +tls_sni.
389 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
390 NULL dereference. Report and patch from Alun Jones.
392 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
393 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
394 Not seeing resolver debug output on NetBSD, but suspect this is a
395 resolver implementation change.
397 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
398 Left warnings. Added "eximon gdb" invocation mode.
400 PP/21 Defaulting "accept_8bitmime" to true, not false.
402 PP/22 Added -bw for inetd wait mode support.
404 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
405 locate the relevant includes and libraries. Made this the default.
407 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
408 Bugzilla 1246, report and most of solution from Tomasz Kusy.
410 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
411 This may cause build issues on older platforms.
413 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
414 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
415 gnutls_require_mac & gnutls_require_protocols (no longer supported).
416 Added SNI support via GnuTLS too.
417 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
419 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
421 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
422 Applied second patch from Janne, implementing suggestion to default
423 multiple-strings-in-record handling to match SPF spec.
425 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
427 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
428 read-only, out of scope).
429 Patch from Wolfgang Breyha, report from Stuart Northfield.
431 PP/29 Fix three issues highlighted by clang analyser static analysis.
432 Only crash-plausible issue would require the Cambridge-specific
433 iplookup router and a misconfiguration.
434 Report from Marcin Mirosław.
436 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
438 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
439 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
440 As part of this, removing so much warning spew let me fix some minor
441 real issues in debug logging.
443 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
444 assignment on my part. Fixed.
446 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
447 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
448 Janne Snabb (who went above and beyond: thank you).
450 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
451 string otherwise requires a connection and a bunch more work and it's
452 relatively easy to get wrong. Should also expose TLS library linkage
455 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
456 64-bit ${eval} (JH/03).
458 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
459 GNU libc to support some of the 64-bit stuff, should not lead to
460 conflicts. Defined before os.h is pulled in, so if a given platform
461 needs to override this, it can.
463 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
464 protection layer was required, which is not implemented.
465 Bugzilla 1254, patch from Wolfgang Breyha.
467 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
468 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
469 tls_dhparam take prime identifiers. Also unbreak combination of
470 OpenSSL+DH_params+TLSSNI.
472 PP/39 Disable SSLv2 by default in OpenSSL support.
478 PP/01 Solaris build fix for Oracle's LDAP libraries.
479 Bugzilla 1109, patch from Stephen Usher.
481 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
483 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
486 TF/02 Fix a couple more cases where we did not log the error message
487 when unlink() failed. See also change 4.74-TF/03.
489 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
490 lock up or crash if it happened to be inside a call to libc when it
491 got a SIGUSR1 from exiwhat.
493 The SIGUSR1 handler appends the current process status to the process
494 log which is later printed by exiwhat. It used to use the general
495 purpose logging code to do this, but several functions it calls are
496 not safe for signals.
498 The new output code in the SIGUSR1 handler is specific to the process
499 log, and simple enough that it's easy to inspect for signal safety.
500 Removing some special cases also simplifies the general logging code.
501 Removing the spurious timestamps from the process log simplifies
504 TF/04 Improved ratelimit ACL condition.
506 The /noupdate option has been deprecated in favour of /readonly which
507 has clearer semantics. The /leaky, /strict, and /readonly update modes
508 are mutually exclusive. The update mode is no longer included in the
509 database key; it just determines when the database is updated. (This
510 means that when you upgrde Exim will forget old rate measurements.)
512 Exim now checks that the per_* options are used with an update mode that
513 makes sense for the current ACL. For example, when Exim is processing a
514 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
515 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
516 must specify per_mail/readonly. If you omit the update mode it defaults to
517 /leaky where that makes sense (as before) or /readonly where required.
519 The /noupdate option is now undocumented but still supported for
520 backwards compatibility. It is equivalent to /readonly except that in
521 ACLs where /readonly is required you may specify /leaky/noupdate or
522 /strict/noupdate which are treated the same as /readonly.
524 A useful new feature is the /count= option. This is a generalization
525 of the per_byte option, so that you can measure the throughput of other
526 aggregate values. For example, the per_byte option is now equivalent
527 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
529 The per_rcpt option has been generalized using the /count= mechanism
530 (though it's more complicated than the per_byte equivalence). When it is
531 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
532 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
533 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
534 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
535 Note that using per_rcpt with a non-readonly update mode in more than
536 one ACL will cause the recipients to be double-counted. (The per_mail
537 and per_byte options don't have this problem.)
539 The handling of very low rates has changed slightly. If the computed rate
540 is less than the event's count (usually one) then this event is the first
541 after a long gap. In this case the rate is set to the same as this event's
542 count, so that the first message of a spam run is counted properly.
544 The major new feature is a mechanism for counting the rate of unique
545 events. The new per_addr option counts the number of different
546 recipients that someone has sent messages to in the last time period. It
547 behaves like per_rcpt if all the recipient addresses are different, but
548 duplicate recipient addresses do not increase the measured rate. Like
549 the /count= option this is a general mechanism, so the per_addr option
550 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
551 example, measure the rate that a client uses different sender addresses
552 with the options per_mail/unique=$sender_address. There are further
553 details in the main documentation.
555 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
557 TF/06 Removed a few PCRE remnants.
559 TF/07 Automatically extract Exim's version number from tags in the git
560 repository when doing development or release builds.
562 PP/02 Raise smtp_cmd_buffer_size to 16kB.
563 Bugzilla 879. Patch from Paul Fisher.
565 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
566 Heavily based on revision 40f9a89a from Simon Arlott's tree.
569 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
571 PP/05 Variable $av_failed, true if the AV scanner deferred.
572 Bugzilla 1078. Patch from John Horne.
574 PP/06 Stop make process more reliably on build failure.
575 Bugzilla 1087. Patch from Heiko Schlittermann.
577 PP/07 Make maildir_use_size_file an _expandable_ boolean.
578 Bugzilla 1089. Patch from Heiko Schlittermann.
580 PP/08 Handle ${run} returning more data than OS pipe buffer size.
581 Bugzilla 1131. Patch from Holger Weiß.
583 PP/09 Handle IPv6 addresses with SPF.
584 Bugzilla 860. Patch from Wolfgang Breyha.
586 PP/10 GnuTLS: support TLS 1.2 & 1.1.
588 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
591 PP/11 match_* no longer expand right-hand-side by default.
592 New compile-time build option, EXPAND_LISTMATCH_RHS.
593 New expansion conditions, "inlist", "inlisti".
595 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
597 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
599 PP/14 fix log_write() format string regression from TF/03.
600 Bugzilla 1152. Patch from Dmitry Isaikin.
606 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
608 PP/02 Harmonised TLS library version reporting; only show if debugging.
609 Layout now matches that introduced for other libraries in 4.74 PP/03.
611 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
613 PP/04 New "dns_use_edns0" global option.
615 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
618 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
619 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
621 TK/01 Updated PolarSSL code to 0.14.2.
622 Bugzilla 1097. Patch from Andreas Metzler.
624 PP/07 Catch divide-by-zero in ${eval:...}.
627 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
630 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
631 format-string attack -- SECURITY: remote arbitrary code execution.
633 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
634 time unintentionally subject to list matching rules, letting the header
635 cause arbitrary Exim lookups (of items which can occur in lists, *not*
636 arbitrary string expansion). This allowed for information disclosure.
638 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
639 INT_MIN/-1 -- value coerced to INT_MAX.
645 NM/01 Workround for PCRE version dependency in version reporting
648 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
649 This fixes portability to compilers other than gcc, notably
650 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
652 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
653 makefiles for portability to HP-UX and POSIX correctness.
655 PP/01 Permit LOOKUP_foo enabling on the make command-line.
656 Also via indented variable definition in the Makefile.
657 (Debugging by Oliver Heesakkers).
659 PP/02 Restore caching of spamd results with expanded spamd_address.
660 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
662 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
663 Improves build reliability. Fix from: Frank Elsner
665 NM/02 Fix wide character breakage in the rfc2047 coding
666 Fixes bug 1064. Patch from Andrey N. Oktyabrski
668 NM/03 Allow underscore in dnslist lookups
669 Fixes bug 1026. Patch from Graeme Fowler
671 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
672 Code patches from Adam Ciarcinski of NetBSD.
674 NM/04 Fixed exiqgrep to cope with mailq missing size issue
677 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
678 is logged, to avoid truncation. Patch from John Horne.
680 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
681 Patch from Jakob Hirsch.
683 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
684 SQL string expansion failure details.
685 Patch from Andrey Oktyabrski.
687 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
688 Patch from Simon Arlott.
690 PP/09 New lookups functionality failed to compile on old gcc which rejects
691 extern declarations in function scope.
692 Patch from Oliver Fleischmann
694 PP/10 Use sig_atomic_t for flags set from signal handlers.
695 Check getgroups() return and improve debugging.
696 Fixed developed for diagnosis in bug 927 (which turned out to be
699 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
700 Patch from Mark Zealey.
702 PP/12 Bugzilla 1056: Improved spamd server selection.
703 Patch from Mark Zealey.
705 PP/13 Bugzilla 1086: Deal with maildir quota file races.
706 Based on patch from Heiko Schlittermann.
708 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
709 Patch from Uwe Doering, sign-off by Michael Haardt.
711 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
712 variable declaration deep within a block. Bug and patch from
715 PP/15 lookups-Makefile IRIX compatibilty coercion.
717 PP/16 Make DISABLE_DKIM build knob functional.
719 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
720 Patch by Simon Arlott
722 TF/03 Fix valgrind.h portability to C89 compilers that do not support
723 variable argument macros. Our copy now differs from upstream.
729 TF/01 Failure to get a lock on a hints database can have serious
730 consequences so log it to the panic log.
732 TF/02 Log LMTP confirmation messages in the same way as SMTP,
733 controlled using the smtp_confirmation log selector.
735 TF/03 Include the error message when we fail to unlink a spool file.
737 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
738 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
739 for maintaining out-of-tree patches for some time.
741 PP/01 Bugzilla 139: Documentation and portability issues.
742 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
743 Handle per-OS dynamic-module compilation flags.
745 PP/02 Let /dev/null have normal permissions.
746 The 4.73 fixes were a little too stringent and complained about the
747 permissions on /dev/null. Exempt it from some checks.
748 Reported by Andreas M. Kirchwitz.
750 PP/03 Report version information for many libraries, including
751 Exim version information for dynamically loaded libraries. Created
752 version.h, now support a version extension string for distributors
753 who patch heavily. Dynamic module ABI change.
755 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
756 privilege escalation vulnerability whereby the Exim run-time user
757 can cause root to append content of the attacker's choosing to
760 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
763 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
764 If dropping privileges for untrusted macros, we disabled normal logging
765 on the basis that it would fail; for the Exim run-time user, this is not
766 the case, and it resulted in successful deliveries going unlogged.
767 Fixed. Reported by Andreas Metzler.
773 PP/01 Date: & Message-Id: revert to normally being appended to a message,
774 only prepend for the Resent-* case. Fixes regression introduced in
775 Exim 4.70 by NM/22 for Bugzilla 607.
777 PP/02 Include check_rfc2047_length in configure.default because we're seeing
778 increasing numbers of administrators be bitten by this.
780 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
782 PP/03 Bugzilla 994: added openssl_options main configuration option.
784 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
786 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
788 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
790 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
791 without a peer certificate, leading to a segfault because of an
792 assumption that peers always have certificates. Be a little more
793 paranoid. Problem reported by Martin Tscholak.
795 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
796 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
797 NB: ClamAV planning to remove STREAM in "middle of 2010".
798 CL also introduces -bmalware, various -d+acl logging additions and
799 more caution in buffer sizes.
801 PP/09 Implemented reverse_ip expansion operator.
803 PP/10 Bugzilla 937: provide a "debug" ACL control.
805 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
807 PP/12 Bugzilla 973: Implement --version.
809 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
811 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
813 PP/15 Bugzilla 816: support multiple condition rules on Routers.
815 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
816 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
817 ignore trailing whitespace.
819 JJ/02 prevent non-panic DKIM error from being sent to paniclog
821 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
824 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
825 Notification from Dr Andrew Aitchison.
827 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
828 ExtendedDetectionInfo response format.
829 Notification from John Horne.
831 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
834 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
835 XSL and documented dependency on system catalogs, with examples of how
838 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
841 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
842 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
843 configuration file which is writeable by the Exim user or group.
845 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
846 of configuration files to cover files specified with the -C option if
847 they are going to be used with root privileges, not just the default
850 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
851 option (effectively making it always true).
853 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
854 files to be used while preserving root privileges.
856 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
857 that rogue child processes cannot use them.
859 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
860 run-time user, instead of root.
862 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
863 Exim run-time user without dropping privileges.
865 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
866 result string, instead of calling string_vformat() twice with the same
869 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
870 for other users. Others should always drop root privileges if they use
871 -C on the command line, even for a whitelisted configure file.
873 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
875 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
881 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
882 $data_path, and $header_path variables; fixed documentation bugs and
885 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
886 exipick to access non-standard spools, including the "frozen" queue
889 NM/01 Bugzilla 965: Support mysql stored procedures.
890 Patch from Alain Williams
892 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
894 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
895 Patch from Andreas Metzler
897 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
898 Patch from Kirill Miazine
900 NM/05 Bugzilla 671: Added umask to procmail example.
902 JJ/03 installed exipick 20100323.0, fixing doc bug
904 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
905 directory. Notification and patch from Dan Rosenberg.
907 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
909 TK/02 Improve log output when DKIM signing operation fails.
911 MH/01 Treat the transport option dkim_domain as a colon separated
912 list, not as a single string, and sign the message with each element,
913 omitting multiple occurences of the same signer.
915 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
916 Bugzilla 985, 986. Patch by Simon Arlott
918 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
919 Patch by Simon Arlott
921 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
922 MBX locking. Notification from Dan Rosenberg.
928 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
930 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
932 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
934 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
936 NM/04 Bugzilla 915: Flag broken perl installation during build.
942 TK/01 Added patch by Johannes Berg that expands the main option
943 "spamd_address" if it starts with a dollar sign.
945 TK/02 Write list of recipients to X-Envelope-Sender header when building
946 the mbox-format spool file for content scanning (suggested by Jakob
949 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
950 (http://www.dcc-servers.net/) support via dccifd. Activated by
951 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
953 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
954 by Mark Daniel Reidel <mr@df.eu>.
956 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
957 When building exim an external PCRE library is now needed -
958 PCRE is a system library on the majority of modern systems.
959 See entry on PCRE_LIBS in EDITME file.
961 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
962 conversation. Added nologin parameter to request.
963 Patch contributed by Kirill Miazine.
965 TF/01 Do not log submission mode rewrites if they do not change the address.
967 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
969 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
970 log files in place. Contributed by Roberto Lima.
972 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
974 TF/03 Bugzilla 615: When checking the local_parts router precondition
975 after a local_part_suffix or local_part_prefix option, Exim now
976 does not use the address's named list lookup cache, since this
977 contains cached lookups for the whole local part.
979 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
980 Robert Millan. Documentation is in experimental-spec.txt.
982 TF/04 Bugzilla 668: Fix parallel build (make -j).
984 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
986 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
987 Patch provided by Jan Srzednicki.
989 TF/05 Leading white space used to be stripped from $spam_report which
990 wrecked the formatting. Now it is preserved.
992 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
993 that they are available at delivery time.
995 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
997 TF/08 TLS error reporting now respects the incoming_interface and
998 incoming_port log selectors.
1000 TF/09 Produce a more useful error message if an SMTP transport's hosts
1001 setting expands to an empty string.
1003 NM/06 Bugzilla 744: EXPN did not work under TLS.
1004 Patch provided by Phil Pennock.
1006 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
1007 Patch provided by Richard Godbee.
1009 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
1010 acl_smtp_notquit, added index entry.
1012 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
1013 Patch provided by Eugene Bujak.
1015 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
1016 accept(). Patch provided by Maxim Dounin.
1018 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
1019 Patch provided by Phil Pennock.
1021 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
1023 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
1024 Patch provided by Brad "anomie" Jorsch.
1026 NM/14 Bugzilla 622: Added timeout setting to transport filter.
1027 Patch provided by Dean Brooks.
1029 TK/05 Add native DKIM support (does not depend on external libraries).
1031 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
1032 Patch provided by Graeme Fowler.
1034 NM/16 Bugzilla 851: Documentation example syntax fix.
1036 NM/17 Changed NOTICE file to remove references to embedded PCRE.
1038 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
1041 NM/19 Bugzilla 745: TLS version reporting.
1042 Patch provided by Phil Pennock.
1044 NM/20 Bugzilla 167: bool: condition support.
1045 Patch provided by Phil Pennock.
1047 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
1048 clients. Patch provided by Phil Pennock.
1050 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
1051 Patch provided by Brad "anomie" Jorsch.
1053 NM/23 Bugzilla 687: Fix misparses in eximstats.
1054 Patch provided by Heiko Schlittermann.
1056 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
1057 Patch provided by Heiko Schlittermann.
1059 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1060 plus update to original patch.
1062 NM/26 Bugzilla 799: Documentation correction for ratelimit.
1064 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
1065 Patch provided by David Brownlee.
1067 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
1069 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
1071 NM/30 Bugzilla 888: TLS documentation bugfixes.
1073 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
1075 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
1076 Unlike the original bugzilla I have changed all shell scripts in src tree.
1078 NM/33 Bugzilla 898: Transport filter timeout fix.
1079 Patch by Todd Rinaldo.
1081 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
1082 Patch by Serge Demonchaux.
1084 NM/35 Bugzilla 39: Base64 decode bug fixes.
1085 Patch by Jakob Hirsch.
1087 NM/36 Bugzilla 909: Correct connect() call in dcc code.
1089 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
1091 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
1093 NM/39 Bugzilla 911: Fixed MakeLinks build script.
1099 TK/01 Add preliminary DKIM support. Currently requires a forked version of
1100 ALT-N's libdkim that I have put here:
1101 http://duncanthrax.net/exim-experimental/
1103 Note to Michael Haardt: I had to rename some vars in sieve.c. They
1104 were called 'true' and it seems that C99 defines that as a reserved
1105 keyword to be used with 'bool' variable types. That means you could
1106 not include C99-style headers which use bools without triggering
1107 build errors in sieve.c.
1109 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
1110 as mailq or other aliases. Changed the --help handling significantly
1111 to do whats expected. exim_usage() emits usage/help information.
1113 SC/01 Added the -bylocaldomain option to eximstats.
1115 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
1117 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
1119 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
1125 PH/01 Another patch from the Sieve maintainer.
1127 PH/02 When an IPv6 address is converted to a string for single-key lookup
1128 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
1129 dots are used instead of colons so that keys in lsearch files need not
1130 contain colons. This was done some time before quoting was made available
1131 in lsearch files. However, iplsearch files do require colons in IPv6 keys
1132 (notated using the quote facility) so as to distinguish them from IPv4
1133 keys. This meant that lookups for IP addresses in host lists did not work
1134 for iplsearch lookups.
1136 This has been fixed by arranging for IPv6 addresses to be expressed with
1137 colons if the lookup type is iplsearch. This is not incompatible, because
1138 previously such lookups could never work.
1140 The situation is now rather anomolous, since one *can* have colons in
1141 ordinary lsearch keys. However, making the change in all cases is
1142 incompatible and would probably break a number of configurations.
1144 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
1147 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
1148 conversion specification without a maximum field width, thereby enabling
1149 a rogue spamd server to cause a buffer overflow. While nobody in their
1150 right mind would setup Exim to query an untrusted spamd server, an
1151 attacker that gains access to a server running spamd could potentially
1152 exploit this vulnerability to run arbitrary code as the Exim user.
1154 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
1155 $primary_hostname instead of what libspf2 thinks the hosts name is.
1157 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
1158 a directory entry by the name of the lookup key. Previously, if a
1159 symlink pointed to a non-existing file or a file in a directory that
1160 Exim lacked permissions to read, a lookup for a key matching that
1161 symlink would fail. Now it is enough that a matching directory entry
1162 exists, symlink or not. (Bugzilla 503.)
1164 PH/03 The body_linecount and body_zerocount variables are now exported in the
1167 PH/04 Added the $dnslist_matched variable.
1169 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
1170 This means they are set thereafter only if the connection becomes
1173 PH/06 Added the client_condition to authenticators so that some can be skipped
1174 by clients under certain conditions.
1176 PH/07 The error message for a badly-placed control=no_multiline_responses left
1177 "_responses" off the end of the name.
1179 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
1181 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
1182 (without spaces) instead of just copying the configuration text.
1184 PH/10 Added the /noupdate option to the ratelimit ACL condition.
1186 PH/11 Added $max_received_linelength.
1188 PH/12 Added +ignore_defer and +include_defer to host lists.
1190 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
1191 way in which PCRE > 7.0 is built.
1193 PH/14 Implemented queue_only_load_latch.
1195 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
1196 MAIL command. The effect was to mangle the value on 64-bit systems.
1198 PH/16 Another patch from the Sieve maintainer.
1200 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
1202 PH/18 If a system quota error occurred while trying to create the file for
1203 a maildir delivery, the message "Mailbox is full" was not appended to the
1204 bounce if the delivery eventually timed out. Change 4.67/27 below applied
1205 only to a quota excession during the actual writing of the file.
1207 PH/19 It seems that peer DN values may contain newlines (and other non-printing
1208 characters?) which causes problems in log lines. The DN values are now
1209 passed through string_printing() before being added to log lines.
1211 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
1212 and InterBase are left for another time.)
1214 PH/21 Added message_body_newlines option.
1216 PH/22 Guard against possible overflow in moan_check_errorcopy().
1218 PH/23 POSIX allows open() to be a macro; guard against that.
1220 PH/24 If the recipient of an error message contained an @ in the local part
1221 (suitably quoted, of course), incorrect values were put in $domain and
1222 $local_part during the evaluation of errors_copy.
1228 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
1229 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
1232 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
1233 issue a MAIL command.
1235 PH/02 In an ACL statement such as
1237 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
1239 if a client was not listed at all, or was listed with a value other than
1240 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
1241 the condition was not true (as it should be), so access was not denied.
1242 The bug was that the ! inversion was incorrectly passed on to the second
1243 item. This has been fixed.
1245 PH/03 Added additional dnslists conditions == and =& which are different from
1246 = and & when the dns lookup returns more than one IP address.
1248 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
1249 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
1251 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
1252 FSYNC, which compiles an option called disable_fsync that allows for
1253 bypassing fsync(). The documentation is heavily laced with warnings.
1255 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
1257 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
1258 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
1259 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
1260 including adding "make clean"; (3) Added -fPIC when compiling the test
1261 dynamically loaded module, to get rid of a warning.
1263 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
1264 message fails, move_frozen_messages = true and ignore_bounce_errors_after
1265 = 0s. The bug is otherwise harmless.
1267 PH/07 There was a bug in the dovecot authenticator such that the value of
1268 $auth1 could be overwritten, and so not correctly preserved, after a
1269 successful authentication. This usually meant that the value preserved by
1270 the server_setid option was incorrect.
1272 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
1274 PH/09 Installed PCRE release 7.0.
1276 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
1277 run for batched SMTP input. It is now run at the start of every message
1278 in the batch. While fixing this I discovered that the process information
1279 (output by running exiwhat) was not always getting set for -bs and -bS
1280 input. This is fixed, and it now also says "batched" for BSMTP.
1282 PH/11 Added control=no_pipelining.
1284 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
1285 patch, slightly modified), and move the expansion of helo_data till after
1286 the connection is made in the smtp transport (so it can use these
1289 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1291 PH/14 Added log_selector = +pid.
1293 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1295 PH/16 Add ${if forany and ${if forall.
1297 PH/17 Added dsn_from option to vary the From: line in DSNs.
1299 PH/18 Flush SMTP output before performing a callout, unless control =
1300 no_callout_flush is set.
1302 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1303 was true (the default) a successful delivery failed to delete the retry
1304 item, thus causing premature timeout of the address. The bug is now
1307 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1309 PH/21 Long custom messages for fakedefer and fakereject are now split up
1310 into multiline reponses in the same way that messages for "deny" and
1311 other ACL rejections are.
1313 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1314 with slight modification.
1316 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1317 draft, changing the syntax and factoring some duplicate code".
1319 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1320 for deliveries of the second and subsequent messages over the same SMTP
1323 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1324 ${reduce, with only minor "tidies".
1326 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1328 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1329 expansion side effects.
1331 PH/27 When a message times out after an over-quota error from an Exim-imposed
1332 quota, the bounce message says "mailbox is full". This message was not
1333 being given when it was a system quota that was exceeded. It now should
1336 MH/03 Made $recipients available in local_scan(). local_scan() already has
1337 better access to the recipient list through recipients_list[], but
1338 $recipients can be useful in postmaster-provided expansion strings.
1340 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1341 in the case of a MAIL command with additional options following the
1342 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1343 were accidentally chopped off.
1345 PH/29 SMTP synchronization checks are implemented when a command is read -
1346 there is a check that no more input is waiting when there shouldn't be
1347 any. However, for some commands, a delay in an ACL can mean that it is
1348 some time before the response is written. In this time, more input might
1349 arrive, invalidly. So now there are extra checks after an ACL has run for
1350 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1351 pipelining has not been advertised.
1353 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1355 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1356 returned in the SMTP response when smtp_return_error_details was false.
1357 This has been fixed.
1359 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1360 instead of the C I/O that was originally supplied, because problems were
1361 reported on Solaris.
1363 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1364 Exim which did not show up earlier: it was assuming that a call to
1365 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1366 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1367 was a macro that became an assignment, so it seemed to work. This has
1368 changed to a proper function call with a void return, hence the compile
1369 error. Exim's code has been fixed.
1371 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1374 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1376 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1378 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1379 because it turns out to be too big or there is a timeout) there is no
1380 "Completed" line in the log. When some messages of this type were
1381 selected by exigrep, they were listed as "not completed". Others were
1382 picked up by some special patterns. I have improved the selection
1383 criteria to be more general.
1385 PH/38 The host_find_failed option in the manualroute router can now be set
1386 to "ignore", to completely ignore a host whose IP address cannot be
1387 found. If all hosts are ignored, the behaviour is controlled by the new
1388 host_all_ignored option.
1390 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1391 homing or because of multiple MX records with /mx) generated more than
1392 one IP address, and the following item turned out to be the local host,
1393 all the secondary addresses of the first item were incorrectly removed
1394 from the list, along with the local host and any following hosts (which
1395 is what is supposed to happen).
1397 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1398 whoever called Exim into the -H file. In the case of the daemon it was
1399 behaving confusingly. When first started, it used values for whoever
1400 started the daemon, but after a SIGHUP it used the Exim user (because it
1401 calls itself on a restart). I have changed the code so that it now always
1404 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1405 message are rejected with the same error (e.g. no authentication or bad
1406 sender address), and a DATA command is nevertheless sent (as can happen
1407 with PIPELINING or a stupid MUA), the error message that was given to the
1408 RCPT commands is included in the rejection of the DATA command. This is
1409 intended to be helpful for MUAs that show only the final error to their
1412 PH/42 Another patch from the Sieve maintainer.
1414 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1415 Eximstats - Fixed some broken HTML links and added missing column headers
1417 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1418 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1420 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1422 PH/43 Yet another patch from the Sieve maintainer.
1424 PH/44 I found a way to check for a TCP/IP connection going away before sending
1425 the response to the final '.' that terminates a message, but only in the
1426 case where the client has not sent further data following the '.'
1427 (unfortunately, this is allowed). However, in many cases there won't be
1428 any further data because there won't be any more messages to send. A call
1429 to select() can be used: if it shows that the input is "ready", there is
1430 either input waiting, or the socket has been closed. An attempt to read
1431 the next input character can distinguish the two cases. Previously, Exim
1432 would have sent an OK response which the client would never have see.
1433 This could lead to message repetition. This fix should cure that, at
1434 least in a lot of common cases.
1436 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1437 advertised in response to EHLO.
1443 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
1444 fixed by 4.65/MH/01 (is this a record?) are fixed:
1446 (i) An empty string was always treated as zero by the numeric comparison
1447 operators. This behaviour has been restored.
1449 (ii) It is documented that the numeric comparison operators always treat
1450 their arguments as decimal numbers. This was broken in that numbers
1451 starting with 0 were being interpreted as octal.
1453 While fixing these problems I realized that there was another issue that
1454 hadn't been noticed. Values of message_size_limit (both the global option
1455 and the transport option) were treated as octal if they started with 0.
1456 The documentation was vague. These values are now always treated as
1457 decimal, and I will make that clear in the documentation.
1463 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
1464 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
1467 MH/01 Don't check that the operands of numeric comparison operators are
1468 integers when their expansion is in "skipping" mode (fixes bug
1469 introduced by 4.64-PH/07).
1471 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
1472 child addresses, Exim now panics and dies. Previously, because the count
1473 is held in a short int, deliveries were likely to be lost. As such a
1474 large number of recipients for a single message is ridiculous
1475 (performance will be very, very poor), I have chosen to impose a limit
1476 rather than extend the field.
1482 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
1483 leftover -K file (the existence of which was triggered by #402).
1484 While we were at it, introduced process PID as part of the -K
1485 filename. This should rule out race conditions when creating
1488 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
1489 processing considerably. Previous code took too long for large mails,
1490 triggering a timeout which in turn triggers #401.
1492 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
1493 in the DK code in transports.c. sendfile() is not really portable,
1494 hence the _LINUX specificness.
1496 TF/01 In the add_headers option to the mail command in an Exim filter,
1497 there was a bug that Exim would claim a syntax error in any
1498 header after the first one which had an odd number of characters
1501 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
1502 callout verification, Exim cached a "reject" for the entire domain. This
1503 is correct for most verifications, but it is not correct for a recipient
1504 verification with use_sender or use_postmaster set, because in that case
1505 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
1506 case of MAIL FROM:<> rejection from other early rejections (e.g.
1507 rejection of HELO). When verifying a recipient using a non-null MAIL
1508 address, the cache is ignored if it shows MAIL FROM:<> rejection.
1509 Whatever the result of the callout, the value of the domain cache is
1510 left unchanged (for any other kind of callout, getting as far as trying
1511 RCPT means that the domain itself is ok).
1513 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
1516 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
1517 manifest itself as EPIPE rather than ECONNECT. When tidying away a
1518 session, the daemon ignores ECONNECT errors and logs others; it now
1519 ignores EPIPE as well.
1521 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
1522 (quoted-printable decoding).
1524 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
1525 later the small subsequent patch to fix an introduced bug.
1527 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
1529 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
1531 PH/08 An error is now given if message_size_limit is specified negative.
1533 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
1534 to be given (somewhat) arbitrary names.
1536 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
1539 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
1540 miscellaneous code fixes
1542 PH/10 Added the log_reject_target ACL modifier to specify where to log
1545 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
1546 hostname. This is wrong, because it relates to the incoming message (and
1547 probably the interface on which it is arriving) and not to the outgoing
1548 callout (which could be using a different interface). This has been
1549 changed to use the value of the helo_data option from the smtp transport
1550 instead - this is what is used when a message is actually being sent. If
1551 there is no remote transport (possible with a router that sets up host
1552 addresses), $smtp_active_hostname is used.
1554 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
1555 tweaks were necessary in order to get it to work (see also 21 below):
1556 (a) The code assumed that strncpy() returns a negative number on buffer
1557 overflow, which isn't the case. Replaced with Exim's string_format()
1559 (b) There were several signed/unsigned issues. I just did the minimum
1560 hacking in of casts. There is scope for a larger refactoring.
1561 (c) The code used strcasecmp() which is not a standard C function.
1562 Replaced with Exim's strcmpic() function.
1563 (d) The code set only $1; it now sets $auth1 as well.
1564 (e) A simple test gave the error "authentication client didn't specify
1565 service in request". It would seem that Dovecot has changed its
1566 interface. Fortunately there's a specification; I followed it and
1567 changed what the client sends and it appears to be working now.
1569 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
1572 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
1573 address A is aliased to B and C, where B exists and C does not. Without
1574 -v the output is "A verified" because verification stops after a
1575 successful redirection if more than one address is generated. However,
1576 with -v the child addresses are also verified. Exim was outputting "A
1577 failed to verify" and then showing the successful verification for C,
1578 with its parentage. It now outputs "B failed to verify", showing B's
1579 parentage before showing the successful verification of C.
1581 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
1582 look up a TXT record in a specific list after matching in a combined
1585 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
1586 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
1587 they consult the DNS. I had assumed they would set it the way they
1588 wanted; and indeed my experiments on Linux seem to show that in some
1589 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
1590 To be on the safe side, however, I have now made the interface to
1591 host_find_byname() similar to host_find_bydns(), with an argument
1592 containing the DNS resolver options. The host_find_byname() function now
1593 sets these options at its start, just as host_find_bydns() does. The smtp
1594 transport options dns_qualify_single and dns_search_parents are passed to
1595 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
1596 of host_find_byname() use the default settings of RES_DEFNAMES
1597 (qualify_single) but not RES_DNSRCH (search_parents).
1599 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
1600 spool_read_header() do less string testing, by means of a preliminary
1601 switch on the second character of optional "-foo" lines. (This is
1602 overdue, caused by the large number of possibilities that now exist.
1603 Originally there were few.) While I was there, I also converted the
1604 str(n)cmp tests so they don't re-test the leading "-" and the first
1605 character, in the hope this might squeeze out yet more improvement.
1607 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
1608 flag allowing group syntax was set by the header_syntax check but not
1609 turned off, possible causing trouble later; (2) The flag was not being
1610 set at all for the header_verify test, causing "group"-style headers to
1611 be rejected. I have now set it in this case, and also caused header_
1612 verify to ignore an empty address taken from a group. While doing this, I
1613 came across some other cases where the code for allowing group syntax
1614 while scanning a header line wasn't quite right (mostly, not resetting
1615 the flag correctly in the right place). These bugs could have caused
1616 trouble for malformed header lines. I hope it is now all correct.
1618 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
1619 with the "reply" argument non-NULL. The code, however (which originally
1620 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
1621 but it didn't always do it. This confused somebody who was copying the
1622 code for some other use. I have removed all the tests.
1624 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
1625 feature that was used to support insecure browsers during the U.S. crypto
1626 embargo. It requires special client support, and Exim is probably the
1627 only MTA that supported it -- and would never use it because real RSA is
1628 always available. This code has been removed, because it had the bad
1629 effect of slowing Exim down by computing (never used) parameters for the
1630 RSA_EXPORT functionality.
1632 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
1633 authenticator to fail if there's a tab character in the incoming data
1634 (there should never be unless someone is messing about, as it's supposed
1635 to be base64-encoded). Also added, on Timo's advice, the "secured" option
1636 if the connection is using TLS or if the remote IP is the same as the
1637 local IP, and the "valid-client-cert option" if a client certificate has
1640 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
1641 authenticators. This can be used for authorization after authentication
1642 succeeds. (In the case of plaintext, it servers for both authentication
1645 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
1646 if any retry times were supplied.
1648 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
1649 connection, where there is no client IP address to check. In this
1650 situation, the verify now always succeeds.
1652 PH/25 Applied John Jetmore's -Mset patch.
1654 PH/26 Added -bem to be like -Mset, but loading a message from a file.
1656 PH/27 In a string expansion for a processed (not raw) header when multiple
1657 headers of the same name were present, leading whitespace was being
1658 removed from all of them, but trailing whitespace was being removed only
1659 from the last one. Now trailing whitespace is removed from each header
1660 before concatenation. Completely empty headers in a concatenation (as
1661 before) are ignored.
1663 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
1664 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
1666 PH/29 [Removed. This was a change that I later backed out, and forgot to
1667 correct the ChangeLog entry (that I had efficiently created) before
1668 committing the later change.]
1670 PH/30 Exim was sometimes attempting to deliver messages that had suffered
1671 address errors (4xx response to RCPT) over the same connection as other
1672 messages routed to the same hosts. Such deliveries are always "forced",
1673 so retry times are not inspected. This resulted in far too many retries
1674 for the affected addresses. The effect occurred only when there were more
1675 hosts than the hosts_max_try setting in the smtp transport when it had
1676 the 4xx errors. Those hosts that it had tried were not added to the list
1677 of hosts for which the message was waiting, so if all were tried, there
1678 was no problem. Two fixes have been applied:
1680 (i) If there are any address or message errors in an SMTP delivery, none
1681 of the hosts (tried or untried) are now added to the list of hosts
1682 for which the message is waiting, so the message should not be a
1683 candidate for sending over the same connection that was used for a
1684 successful delivery of some other message. This seems entirely
1685 reasonable: after all the message is NOT "waiting for some host".
1686 This is so "obvious" that I'm not sure why it wasn't done
1687 previously. Hope I haven't missed anything, but it can't do any
1688 harm, as the worst effect is to miss an optimization.
1690 (ii) If, despite (i), such a delivery is accidentally attempted, the
1691 routing retry time is respected, so at least it doesn't keep
1692 hammering the server.
1694 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
1695 in ${readsocket because some servers need this prod.
1697 PH/32 Added some extra debug output when updating a wait-xxx database.
1699 PH/33 The hint "could be header name not terminated by colon", which has been
1700 given for certain expansion errors for a long time, was not being given
1701 for the ${if def:h_colon_omitted{... case.
1703 PH/34 The spec says: "With one important exception, whenever a domain list is
1704 being scanned, $domain contains the subject domain." There was at least
1705 one case where this was not true.
1707 PH/35 The error "getsockname() failed: connection reset by peer" was being
1708 written to the panic log as well as the main log, but it isn't really
1709 panic-worthy as it just means the connection died rather early on. I have
1710 removed the panic log writing for the ECONNRESET error when getsockname()
1713 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
1714 runs only) independently of the message's sender address. This meant
1715 that, if the 4xx error was in fact related to the sender, a different
1716 message to the same recipient with a different sender could confuse
1717 things. In particualar, this can happen when sending to a greylisting
1718 server, but other circumstances could also provoke similar problems.
1719 I have changed the default so that the retry time for these errors is now
1720 based a combination of the sender and recipient addresses. This change
1721 can be overridden by setting address_retry_include_sender=false in the
1724 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
1725 remote server are returned as part of bounce messages. This was not
1726 happening for LMTP over a pipe (the lmtp transport), but now it is the
1727 same for both kinds of LMTP.
1729 PH/38 Despite being documented as not happening, Exim was rewriting addresses
1730 in header lines that were in fact CNAMEs. This is no longer the case.
1732 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
1733 and queue runs started by the daemon processed all messages. This has
1734 been fixed so that -R and -S can now usefully be given with -q<time>.
1736 PH/40 Import PCRE release 6.7 (fixes some bugs).
1738 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
1740 PH/42 Give an error if -q is specified more than once.
1742 PH/43 Renamed the variables $interface_address and $interface_port as
1743 $received_ip_address and $received_port, to make it clear that these
1744 values apply to message reception, and not to the outgoing interface when
1745 a message is delivered. (The old names remain recognized, of course.)
1747 PH/44 There was no timeout on the connect() call when using a Unix domain
1748 socket in the ${readsocket expansion. There now is.
1750 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
1751 be meaningful with "accept".
1753 SC/01 Eximstats V1.43
1754 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
1756 SC/02 Eximstats V1.44
1757 Use a glob alias rather than an array ref in the generated
1758 parser. This improves both readability and performance.
1760 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
1761 Collect SpamAssassin and rejection statistics.
1762 Don't display local sender or destination tables unless
1763 there is data to show.
1764 Added average volumes into the top table text output.
1766 SC/04 Eximstats V1.46
1767 Collect data on the number of addresses (recipients)
1768 as well as the number of messages.
1770 SC/05 Eximstats V1.47
1771 Added 'Message too big' to the list of mail rejection
1772 reasons (thanks to Marco Gaiarin).
1774 SC/06 Eximstats V1.48
1775 Mainlog lines which have GMT offsets and are too short to
1776 have a flag are now skipped.
1778 SC/07 Eximstats V1.49 (Alain Williams)
1779 Added the -emptyok flag.
1781 SC/08 Eximstats V1.50
1782 Fixes for obtaining the IP address from reject messages.
1784 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
1785 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
1786 whitesspace changes from 4.64-PH/27
1788 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
1791 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
1792 are found, allow negative numbers in numeric criteria)
1794 JJ/06 exipick.20061117.2, added new $message_body_missing variable
1796 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
1797 to match changes made in 4.64-PH/43
1799 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
1801 PH/47 Put in an explicit test for a DNS lookup of an address record where the
1802 "domain" is actually an IP address, and force a failure. This locks out
1803 those revolvers/nameservers that support "A-for-A" lookups, in
1804 contravention of the specifications.
1806 PH/48 When a host name was looked up from an IP address, and the subsequent
1807 forward lookup of the name timed out, the host name was left in
1808 $sender_host_name, contrary to the specification.
1810 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
1811 restricted to single-key lookups, Exim was not diagnosing an error if
1812 * or *@ was used with a query-style lookup.
1814 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
1816 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
1817 long ago, but noone interested enough thought of it. Let's just say that
1818 the "1.1" means that there are some new functions that weren't there at
1819 some point in the past.
1821 PH/51 Error processing for expansion failure of helo_data from an smtp
1822 transport during callout processing was broken.
1824 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
1825 tested/used via the -bh/-bhc/-bs options.
1827 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
1828 bug, fixed in subsequent PCRE releases).
1830 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
1831 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
1833 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
1839 SC/01 Use a glob alias rather than an array ref in eximstats generated
1840 parser. This improves both readability and performance.
1842 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
1843 Don't display local sender or destination tables in eximstats unless
1844 there is data to show.
1845 Added average volumes into the eximstats top table text output.
1847 SC/03 Collect data on the number of addresses (recipients) as well
1848 as the number of messages in eximstats.
1850 TF/01 Correct an error in the documentation for the redirect router. Exim
1851 does (usually) call initgroups() when daemonizing.
1853 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
1854 with consistent privilege compared to when running as a daemon.
1856 TF/03 Note in the spec that $authenticated_id is not set for local
1857 submissions from trusted users.
1859 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
1860 Thanks to Dean Brooks <dean@iglou.com> for the patch.
1862 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
1863 by adding some example configuration directives to the default
1864 configuration file. A little bit of work is required to uncomment the
1865 directives and define how usernames and passwords are checked, but
1866 there is now a framework to start from.
1868 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
1869 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
1870 without this. I don't know how relevant this is to other LDAP libraries.
1872 PH/02 Add the verb name to the "unknown ACL verb" error.
1874 PH/03 Magnus Holmgren's patch for filter_prepend_home.
1876 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
1878 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
1879 directory not expanded when it should be if an expanded home directory
1880 was set for the address (which is overridden by the transport).
1882 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
1885 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
1886 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
1887 because it is too late at that time, and has no effect.
1889 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
1890 security issue with \' (bugzilla #107). I could not use the
1891 PQescapeStringConn() function, because it needs a PGconn value as one of
1894 PH/08 When testing addresses using -bt, indicate those final addresses that
1895 are duplicates that would not cause an additional delivery. At least one
1896 person was confused, thinking that -bt output corresponded to deliveries.
1897 (Suppressing duplicates isn't a good idea as you lose the information
1898 about possibly different redirections that led to the duplicates.)
1900 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
1901 systems where poll() doesn't work, in particular OS X.
1903 PH/10 Added more information to debugging output for retry time not reached.
1905 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
1906 operations in malware.c.
1908 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
1911 PH/13 If write_rejectlog was set false when logging was sent to syslog with
1912 syslog_duplication set false, log lines that would normally be written
1913 both the the main log and to the reject log were not written to syslog at
1916 PH/14 In the default configuration, change the use of "message" in ACL warn
1917 statements to "add_header".
1919 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
1920 not followed by a command (e.g. "seen endif").
1922 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
1923 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
1926 PH/17 Added extra conditions to the default value of delay_warning_condition
1930 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
1931 { match{$h_precedence:}{(?i)bulk|list|junk} } \
1932 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
1935 The Auto-Submitted: and various List- headers are standardised, whereas I
1936 don't think Precedence: ever was.
1938 PH/18 Refactored debugging code in route_finduser() to show more information,
1939 in particular, the error code if getpwnam() issues one.
1941 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
1942 This is apparently needed in addition to the PH/07 change above to avoid
1943 any possible encoding problems.
1945 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
1946 but not after initializing Perl.
1948 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
1949 output them only if debugging. By default they are written stderr,
1950 apparently, which is not desirable.
1952 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
1955 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
1958 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
1960 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
1961 authenticated or an ident call has been made. Suppress the default
1962 values for $authenticated_id and $authenticated_sender (but permit -oMai
1963 and -oMas) when testing with -bh.
1965 PH/24 Re-jigged the order of the tests in the default configuration so that the
1966 tests for valid domains and recipients precede the DNS black list and CSA
1967 tests, on the grounds that those ones are more expensive.
1969 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
1970 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
1971 This bug exists in every version of Exim that I still have, right back to
1974 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
1975 However, an attempt to turn on case-sensitivity in a regex key by
1976 including (?-i) didn't work because the subject string was already
1977 lowercased, and the effects were non-intuitive. It turns out that a
1978 one-line patch can be used to allow (?-i) to work as expected.
1984 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
1985 other effects) broke the use of negated acl sub-conditions.
1987 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
1990 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
1991 "Deny" causes Exim to reject the incoming connection with a 554 error.
1992 Unfortunately, if there is a major crisis, such as a disk failure,
1993 tcp-wrappers gives "deny", whereas what one would like would be some
1994 kind of temporary error. A kludge has been added to help with this.
1995 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
1996 554 error is used if errno is still zero or contains ENOENT (which occurs
1997 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
2000 PH/03 Add -lutil to the default FreeBSD LIBS setting.
2002 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
2003 errors. Otherwise a message that provokes a temporary error (when other
2004 messages do not) can cause a whole host to time out.
2006 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
2007 addresses were routed directly to files or pipes from a redirect router.
2008 File deliveries just didn't batch; pipe deliveries might have suffered
2011 PH/06 A failure to get a lock for a hints database would erroneously always say
2012 "Failed to get write lock", even when it was really a read lock.
2014 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
2015 of 0600. This has been changed to use the value of the lockfile_mode
2016 option (which defaults to 0600).
2018 PH/08 Applied small patch from the Sieve maintainer.
2020 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
2021 folder from quota calculations, a direct delivery into this folder messed
2022 up the contents of the maildirsize file. This was because the regex was
2023 used only to exclude .Trash (or whatever) when the size of the mailbox
2024 was calculated. There was no check that a delivery was happening into an
2025 excluded directory. This bug has been fixed by ignoring all quota
2026 processing for deliveries into excluded directories.
2028 PH/10 Added the maildirfolder_create_regex option to appendfile.
2034 PH/01 The code for finding all the local interface addresses on a FreeBSD
2035 system running IPv6 was broken. This may well have applied to all BSD
2036 systems, as well as to others that have similar system calls. The broken
2037 code found IPv4 interfaces correctly, but gave incorrect values for the
2038 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
2039 that it would not match correctly against @[] and not recognize the IPv6
2042 PH/02 The ipliteral router was not recognizing addresses of the form user@
2043 [ipv6:....] because it didn't know about the "ipv6:" prefix.
2045 PH/03 Added disable_ipv6.
2047 PH/04 Changed $reply_address to use the raw form of the headers instead of the
2048 decoded form, because it is most often used to construct To: headers
2049 lines in autoreplies, and the decoded form may well be syntactically
2050 invalid. However, $reply_address has leading white space removed, and all
2051 newlines turned into spaces so that the autoreply transport does not
2054 PH/05 If group was specified without a user on a router, and no group or user
2055 was specified on a transport, the group from the router was ignored.
2057 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
2058 for visible compile-time settings that can be used to change these
2059 numbers, for those that want even more. Backwards compatibility with old
2060 spool files has been maintained. However, going back to a previous Exim
2061 release will lost any variables that are in spool files.
2063 PH/07 Two small changes when running in the test harness: increase delay when
2064 passing a TCP/IP connection to a new process, in case the original
2065 process has to generate a bounce, and remove special handling of
2066 127.0.0.2 (sic), which is no longer necessary.
2068 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
2069 be the same on different OS.
2071 PH/09 Moved a debug statement in filter processing to avoid a race problem when
2074 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
2075 whether --show-vars was specified or not
2077 JJ/02 exipick: Added support for new ACL variable spool format introduced
2080 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
2081 syntactically invalid From: or Reply-to: line, and a filter used this to
2082 generate an autoreply, and therefore failed to obtain an address for the
2083 autoreply, Exim could try to deliver to a non-existent relative file
2084 name, causing unrelated and misleading errors. What now happens is that
2085 it logs this as a hard delivery error, but does not attempt to create a
2088 PH/11 The exinext utility has a -C option for testing purposes, but although
2089 the given file was scanned by exinext itself; it wasn't being passed on
2090 when Exim was called.
2092 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
2093 an end-of-file indication when reading a command response.
2095 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
2096 compiled. In many other places in Exim, IPv6 addresses are always
2097 recognized, so I have changed this. It also means that IPv4 domain
2098 literals of the form [IPV4:n.n.n.n] are now always recognized.
2100 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
2101 used if the router is not running as root, for example, when verifying at
2102 ACL time, or when using -bh. The debugging output from this situation was
2103 non-existent - all you got was a failure to exec. I have made two
2106 (a) Failures to set uid/gid, the current directory, or a process leader
2107 in a subprocess such as that created by queryprogram now generate
2108 suitable debugging ouput when -d is set.
2110 (b) The queryprogram router detects when it is not running as root,
2111 outputs suitable debugging information if -d is set, and then runs
2112 the subprocess without attempting to change uid/gid.
2114 PH/15 Minor change to Makefile for building test_host (undocumented testing
2117 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
2118 additional section of a DNS packet that returns MX or SRV records.
2119 Instead, it always explicitly searches for A/AAAA records. This avoids
2120 major problems that occur when a DNS server includes only records of one
2121 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
2122 fixed another bug: if SRV records were looked up and the corresponding
2123 address records were *not* found in the additional section, the port
2124 values from the SRV records were lost.
2126 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
2127 using the correct key (the original address) when searching the retry
2128 rules in order to find which one to use for generating the retry hint.
2130 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
2131 adding the default one. Similarly, if it contains a Reply-To: header, the
2132 errors_reply_to option, if set, is not used.
2134 PH/19 When calculating a retry time, Exim used to measure the "time since
2135 failure" by looking at the "first failed" field in the retry record. Now
2136 it does not use this if it is later than than the arrival time of the
2137 message. Instead it uses the arrival time. This makes for better
2138 behaviour in cases where some deliveries succeed, thus re-setting the
2139 "first failed" field. An example is a quota failure for a huge message
2140 when small messages continue to be delivered. Without this change, the
2141 "time since failure" will always be short, possible causing more frequent
2142 delivery attempts for the huge message than are intended.
2143 [Note: This change was subsequently modified - see PH/04 for 4.62.]
2145 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
2146 $1, $2, $3) because the numerical variables can be reset during some
2147 expansion items (e.g. "match"), thereby losing the authentication data.
2149 PH/21 Make -bV show the size of off_t variables so that the test suite can
2150 decide whether to run tests for quotas > 2G.
2152 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
2153 mailbox_size, and mailbox_filecount in the appendfile transport. If a
2154 filecount value is greater than 2G or if a quota value is greater than 2G
2155 on a system where the size of off_t is not greater than 4, a panic error
2158 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
2159 never match. The debug and -bh output now contains an explicit error
2160 message indicating a malformed IPv4 address or mask.
2162 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
2163 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
2164 PH/23 above applies.
2166 PH/25 Do not write to syslog when running in the test harness. The only
2167 occasion when this arises is a failure to open the main or panic logs
2168 (for which there is an explicit test).
2170 PH/26 Added the /no_tell option to "control=freeze".
2172 PH/27 If a host name lookup failed very early in a connection, for example, if
2173 the IP address matched host_lookup and the reverse lookup yielded a name
2174 that did not have a forward lookup, an error message of the form "no IP
2175 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
2176 could be logged. Now it outputs the IP address instead of "NULL".
2178 PH/28 An enabling patch from MH: add new function child_open_exim2() which
2179 allows the sender and the authenticated sender to be set when
2180 submitting a message from within Exim. Since child_open_exim() is
2181 documented for local_scan(), the new function should be too.
2183 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
2184 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
2185 results in an empty string is now treated as unset.
2187 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
2189 PH/31 Added sender_verify_fail logging option.
2191 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
2192 needed by RFC 822 but not by RFC 2822 was commented out. I have now
2193 tidied the source and removed it altogether.
2195 PH/33 When a queue run was abandoned because the load average was too high, a
2196 log line was always written; now it is written only if the queue_run log
2197 selector is set. In addition, the log line for abandonment now contains
2198 information about the queue run such as the pid. This is always present
2199 in "start" and "stop" lines but was omitted from the "abandon" line.
2201 PH/34 Omit spaces between a header name and the colon in the error message that
2202 is given when verify = headers_syntax fails (if there are lots of them,
2203 the message gets confusing).
2205 PH/35 Change the default for dns_check_names_pattern to allow slashes within
2206 names, as there are now some PTR records that contain slashes. This check
2207 is only to protect against broken name servers that fall over on strange
2208 characters, so the fact that it applies to all lookups doesn't matter.
2210 PH/36 Now that the new test suite is complete, we can remove some of the
2211 special code in Exim that was needed for the old test suite. For example,
2212 sorting DNS records because real resolvers return them in an arbitrary
2213 order. The new test suite's fake resolver always returns records in the
2216 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
2217 bounces) except when queue_only is set, to avoid logging races between
2218 the different processes.
2220 PH/38 Panic-die if .include specifies a non-absolute path.
2222 PH/39 A tweak to the "H" retry rule from its user.
2224 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
2225 a label. They prevented compilation on older perls.
2227 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
2228 a warning to be raised on newish perls.
2230 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
2231 on queue. Changes to match documented behaviour of showing count of
2232 messages matching specified criteria.
2234 PH/40 Changed the default ident timeout from 30s to 5s.
2236 PH/41 Added support for the use of login_cap features, on those BSD systems
2237 that have them, for controlling the resources used by pipe deliveries.
2239 PH/42 The content-scanning code uses fopen() to create files in which to put
2240 message data. Previously it was not paying any attention to the mode of
2241 the files. Exim runs with umask(0) because the rest of the code creates
2242 files with open(), and sets the required mode explicitly. Thus, these
2243 files were ending up world-writeable. This was not a big issue, because,
2244 being within the spool directory, they were not world-accessible. I have
2245 created a function called modefopen, which takes an additional mode
2246 argument. It sets umask(777), creates the file, chmods it to the required
2247 mode, then resets the umask. All the relevant calls to fopen() in the
2248 content scanning code have been changed to use this function.
2250 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
2251 to 24 hours. This avoids potential overflow problems when processing G
2252 and H retry rules. I suspect nobody ever tinkers with this value.
2254 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
2256 PH/45 When the plaintext authenticator is running as a client, the server's
2257 challenges are checked to ensure they are valid base64 strings. By
2258 default, the authentication attempt is cancelled if an invalid string is
2259 received. Setting client_ignore_invalid_base64 true ignores these errors.
2260 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
2261 they are received. Thus, the responses can be made to depend on the
2262 challenges. If an invalid string is ignored, an empty string is placed in
2265 PH/46 Messages that are created by the autoreply transport now contains a
2266 References: header, in accordance with RFCs 2822 and 3834.
2268 PH/47 Added authenticated_sender_force to the smtp transport.
2270 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
2272 PH/49 Installed latest patch from the Sieve maintainer.
2274 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
2275 was also set, the appendfile transport was unnecessarily scanning a
2276 directory of message files (e.g. for maildir delivery) to find the count
2277 of files (along with the size), even though it did not need this
2278 information. It now does the scan only if it needs to find either the
2279 size of the count of files.
2281 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
2283 PH/52 Two bugs concerned with error handling when the smtp transport is
2286 (i) Exim was not creating retry information for temporary errors given
2287 for individual recipients after the DATA command when the smtp transport
2288 was used in LMTP mode. This meant that they could be retried too
2289 frequently, and not timed out correctly.
2291 (ii) Exim was setting the flag that allows error details to be returned
2292 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2293 recipients that were returned after the DATA command.
2295 PH/53 This is related to PH/52, but is more general: for any failing address,
2296 when detailed error information was permitted to be returned to the
2297 sender, but the error was temporary, then after the final timeout, only
2298 "retry timeout exceeded" was returned. Now it returns the full error as
2299 well as "retry timeout exceeded".
2301 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2302 do this, and (what is worse) MTAs that accept it.
2304 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2305 will now be deprecated.
2307 PH/56 New os.c-cygwin from the Cygwin maintainer.
2309 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2310 formats (previously only available in exim formats via -bpr, -bpru,
2311 and -bpra. Now also available in native and exiqgrep formats)
2313 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2314 with very large, slow to parse queues
2316 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2318 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2320 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2321 responses to authentication challenges, though it was showing the
2322 challenges; (ii) I've removed the CR characters from the debug output for
2325 PH/58 Allow for the insertion of a newline as well as a space when a string
2326 is turned into more than one encoded-word during RFC 2047 encoding. The
2327 Sieve code now uses this.
2329 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2330 data_4xx, lost_connection, tls_required.
2332 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2333 message was being sent as an SMTP response.
2335 PH/61 Add -l and -k options to exicyclog.
2337 PH/62 When verifying, if an address was redirected to one new address, so that
2338 verification continued, and the new address failed or deferred after
2339 having set something in $address_data, the value of $address_data was not
2340 passed back to the ACL. This was different to the case when no
2341 redirection occurred. The value is now passed back in both cases.
2343 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2344 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2345 use login_cap.h, so on its own it isn't the distinguishing feature. The
2346 new name refers directly to the setclassresources() function.
2348 PH/65 Added configuration files for NetBSD3.
2350 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2352 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2353 is preferred over IPv4.
2355 PH/68 The bounce_return_message and bounce_return_body options were not being
2356 honoured for bounces generated during the reception of non-SMTP messages.
2357 In particular, this applied to messages rejected by the ACL. This bug has
2358 been fixed. However, if bounce_return_message is true and bounce_return_
2359 body is false, the headers that are returned for a non-SMTP message
2360 include only those that have been read before the error was detected.
2361 (In the case of an ACL rejection, they have all been read.)
2363 PH/69 The HTML version of the specification is now built in a directory called
2364 spec_html instead of spec.html, because the latter looks like a path with
2365 a MIME-type, and this confuses some software.
2367 PH/70 Catch two compiler warnings in sieve.c.
2369 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2370 function verify_get_ident() calls ip_connect() to connect a socket, but
2371 if the "connect()" function timed out, ip_connect() used to close the
2372 socket. However, verify_get_ident() also closes the socket later, and in
2373 between Exim writes to the log, which may get opened at this point. When
2374 the socket was closed in ip_connect(), the log could get the same file
2375 descriptor number as the socket. This naturally causes chaos. The fix is
2376 not to close the socket in ip_connect(); the socket should be closed by
2377 the function that creates it. There was only one place in the code where
2378 this was missing, in the iplookup router, which I don't think anybody now
2379 uses, but I've fixed it anyway.
2381 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2382 well as to direct DNS lookups. Otherwise the handling of names in host
2383 lists is inconsistent and therefore confusing.
2389 PH/01 Two changes to the default runtime configuration:
2391 (1) Move the checks for relay_from_hosts and authenticated clients from
2392 after to before the (commented out) DNS black list checks.
2394 (2) Add control=submission to the relay_from_hosts and authenticated
2395 clients checks, on the grounds that messages accepted by these
2396 statements are most likely to be submissions.
2398 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2400 (1) Generate an error if the third argument for the ${prvs expansion is
2403 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2406 (3) Reset the variables that are obtained from the first argument of
2407 ${prvscheck and used in the second argument before leaving the code,
2408 because their memory is reclaimed, so using them afterwards may do
2411 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2412 one (it's much easier than Tom thought :-).
2414 (5) Because of (4), we can now allow for the use of $prvscheck_result
2415 inside the third argument.
2417 PH/03 For some reason, the default setting of PATH when running a command from
2418 a pipe transport was just "/usr/bin". I have changed it to
2421 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2422 anything to be listed in the output from -bV.
2424 PH/05 When a filter generated an autoreply, the entire To: header line was
2425 quoted in the delivery log line, like this:
2427 => >A.N.Other <ano@some.domain> <original@ddress> ...
2429 This has been changed so that it extracts the operative address. There
2430 may be more than one such address. If so, they are comma-separated, like
2433 => >ano@some.domain,ona@other.domain <original@ddress> ...
2435 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2436 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2437 not being looked up in the rDNS to get a host name, Exim was showing the
2438 IP address twice in Received: lines, even though the IP addresses were
2439 identical. For example:
2441 Received: from [1.2.3.4] (helo=[1.2.3.4])
2443 However, if the real host name was known, it was omitting the HELO data
2444 if it matched the actual IP address. This has been tidied up so that it
2445 doesn't show the same IP address twice.
2447 PH/07 When both +timestamp and +memory debugging was on, the value given by
2448 $tod_xxx expansions could be wrong, because the tod_stamp() function was
2449 called by the debug printing, thereby overwriting the timestamp buffer.
2450 Debugging no longer uses the tod_stamp() function when +timestamp is set.
2452 PH/08 When the original message was included in an autoreply transport, it
2453 always said "this is a copy of the message, including all the headers",
2454 even if body_only or headers_only was set. It now gives an appropriate
2457 PH/09 Applied a patch from the Sieve maintainer which:
2459 o fixes some comments
2460 o adds the (disabled) notify extension core
2461 o adds some debug output for the result of if/elsif tests
2462 o points to the current vacation draft in the documentation
2463 and documents the missing references header update
2467 o fixes a bug in processing the envelope test (when testing
2468 multiple envelope elements, the last element determinted the
2471 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
2472 Electronic Mail") by including:
2474 Auto-submitted: auto-generated
2476 in the messages that it generates (bounce messages and others, such as
2477 warnings). In the case of bounce messages for non-SMTP mesages, there was
2478 also a typo: it was using "Auto_submitted" (underscore instead of
2479 hyphen). Since every message generated by Exim is necessarily in response
2480 to another message, thes have all been changed to:
2482 Auto-Submitted: auto-replied
2484 in accordance with these statements in the RFC:
2486 The auto-replied keyword:
2488 - SHOULD be used on messages sent in direct response to another
2489 message by an automatic process,
2491 - MUST NOT be used on manually-generated messages,
2493 - MAY be used on Delivery Status Notifications (DSNs) and Message
2494 Disposition Notifications (MDNs),
2496 - MUST NOT be used on messages generated by automatic or periodic
2497 processes, except for messages which are automatic responses to
2500 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
2501 to the default Received: header definition.
2503 PH/12 Added log selector acl_warn_skipped (default on).
2505 PH/13 After a successful wildlsearch lookup, discard the values of numeric
2506 variables because (a) they are in the wrong storage pool and (b) even if
2507 they were copied, it wouldn't work properly because of the caching.
2509 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
2510 checking when decoding. Apparently there are clients that generate
2511 overlong encoded strings. Why am I not surprised?
2513 PH/15 If the first argument of "${if match_address" was not empty, but did not
2514 contain an "@" character, Exim crashed. Now it writes a panic log message
2515 and treats the condition as false.
2517 PH/16 In autoreply, treat an empty string for "once" the same as unset.
2519 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
2520 extension "envelope-auth". The code is finished and in agreement with
2521 other implementations, but there is no documentation so far and in fact,
2522 nobody wrote the draft yet. This extension is currently #undef'ed, thus
2523 not changing the active code.
2525 Print executed "if" and "elsif" statements when debugging is used. This
2526 helps a great deal to understand what a filter does.
2528 Document more things not specified clearly in RFC3028. I had all this
2529 sorted out, when out of a sudden new issues came to my mind. Oops."
2531 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
2534 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
2535 canonical form (as documented). However, after a host name lookup from
2536 the IP address, check_host() was doing a simple string comparison with
2537 addresses acquired from the DNS when checking that the found name did
2538 have the original IP as one of its addresses. Since any found IPv6
2539 addresses are likely to be in abbreviated form, the comparison could
2540 fail. Luckily, there already exists a function for doing the comparison
2541 by converting both addresses to binary, so now that is used instead of
2542 the text comparison.
2544 PH/20 There was another similar case to PH/19, when a complete host name was
2545 given in a host list; looking up its IP address could give an abbreviated
2546 form, whereas the current host's name might or might not be abbreviated.
2547 The same fix has been applied.
2553 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
2554 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
2557 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
2558 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
2560 PH/03 Typo: missing ".o" in src/pcre/Makefile.
2562 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
2563 header line, restrict the check to what is listed in RFCs 2369 and 2929.
2564 Also, for "Auto-Submitted", treat anything other than "no" as
2565 non-personal, in accordance with RFC 3834. (Previously it treated
2566 anything starting "auto-" as non-personal.)
2568 TF/01 The control=submission/name=... option had a problem with syntax
2569 errors if the name included a slash character. The /name= option
2570 now slurps the rest of the string, so it can include any characters
2571 but it must come last in the list of options (after /sender_retain
2574 PH/05 Some modifications to the interface to the fake nameserver for the new
2582 TK/01 Added the "success_on_redirect" address verification option. See
2583 NewStuff for rationale and an example.
2585 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
2587 PH/02 Patch to exigrep to allow it to work on syslog lines.
2589 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
2590 fread() to skip over the body file's header line, because in Cygwin the
2591 header line is locked and is inaccessible.
2593 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
2594 co-exist for some time) to make it clear that it is the Exim ID that is
2595 referenced, not the Message-ID: header line.
2597 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
2598 string_format() function, because snprintf() does not exist on all
2601 PH/06 The use of forbid_filter_existstest now also locks out the use of the
2602 ${stat: expansion item.
2604 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
2605 protocol synchronization error", to keep the pedants happy.
2607 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
2608 well as for IRIX systems, when gcc is being used. See the host.c source
2611 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
2613 PH/10 Named domain lists were not working if used in a queue_smtp_domains
2616 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
2617 transport and to the smtp transport in LMTP mode.
2619 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
2621 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
2622 run a filter in a subprocess. This could lead to confusion in subsequent
2623 lookups in the parent process. There should also be a search_tidyup() at
2624 the end of the subprocess.
2626 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
2627 only if the host matched helo_try_verify_hosts, which caused the
2628 verification to occur when the EHLO/HELO command was issued. The ACL just
2629 tested the remembered result. Now, if a previous verification attempt has
2630 not happened, "verify = helo" does it there and then.
2632 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
2634 TK/03 Fix log output including CR from clamd.
2636 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
2637 exist provoked a memory error which could cause a segfault.
2639 PH/15 Installed PCRE 6.2
2641 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
2643 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
2644 of the problem. Specifically, suggested +O2 rather than +O1 for the
2647 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
2649 PH/20 If a delivery was routed to a non-standard port by means of an SRV
2650 record, the port was not correctly logged when the outgoing_port log
2651 selector was set (it logged the transort's default port).
2653 PH/21 Added support for host-specific ports to manualroute, queryprogram,
2654 fallback_hosts, and "hosts" in the smtp transport.
2656 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
2657 host errors such as "Connection refused".
2659 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
2660 authentication with radiusclient 0.4.9:
2662 - Error returned from rc_read_config was caught wrongly
2663 - Username/password not passed on to radius server due to wrong length.
2665 The presumption is that some radiusclient API changes for 4.51/PH/17
2666 were not taken care of correctly. The code is still untested by me (my
2667 Linux distribution still has 0.3.2 of radiusclient), but it was
2668 contributed by a Radius user.
2670 PH/24 When doing a callout, the value of $domain wasn't set correctly when
2671 expanding the "port" option of the smtp transport.
2673 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
2674 while reading a MIME header. Thanks to Tom Hughes for a patch.
2676 PH/24 Include config.h inside local_scan.h so that configuration settings are
2679 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
2680 that in an ACL for RCPT (for example), you can examine exactly what was
2683 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
2684 commands, but it was not correctly comparing the address with the actual
2685 client host address. Thus, it would show the EHLO address in Received:
2686 header lines when this was not necessary.
2688 PH/27 Added the % operator to ${eval:}.
2690 PH/28 Exim tries to create and chdir to its spool directory when it starts;
2691 it should be ignoring failures (because with -C, for example, it has lost
2692 privilege). It wasn't ignoring creation failures other than "already
2695 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
2698 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
2699 because an input line was too long, either on its own, or by virtue of
2700 too many continuations, the temporary file was not being removed, and the
2701 return code was incorrect.
2703 PH/31 Missing "BOOL" in function definition in filtertest.c.
2705 PH/32 Applied Sieve patches from the maintainer.
2707 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
2709 PH/33 Added "verify = not_blind".
2711 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
2712 Local/Makefile (with some defaults set). These are used in built scripts
2713 such as exicyclog, but they have never been used in the exim_install
2714 script (though there are many overriding facilities there). I have
2715 arranged that the exim_install script now takes note of these two
2718 PH/35 Installed configuration files for Dragonfly.
2720 PH/36 When a locally submitted message by a trusted user did not contain a
2721 From: header, and the sender address was obtained from -f or from an SMTP
2722 MAIL command, and the trusted user did not use -F to supply a sender
2723 name, $originator_name was incorrectly used when constructing a From:
2724 header. Furthermore, $originator_name was used for submission mode
2725 messages from external hosts without From: headers in a similar way,
2726 which is clearly wrong.
2728 PH/37 Added control=suppress_local_fixups.
2730 PH/38 When log_selector = +received_sender was set, and the addition of the
2731 sender made the log line's construction buffer exactly full, or one byte
2732 less than full, an overflow happened when the terminating "\n" was
2735 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
2736 when the result of a list match is failure because a DNS lookup failed.
2738 PH/40 RM_COMMAND is now used in the building process.
2740 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
2741 the "build-* directories that it finds.
2743 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
2744 address in a domain literal was a prefix of an interface address.
2746 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
2747 when verifying a sender address, unless rewrite_headers is false.
2749 PH/44 Wrote a long comment about why errors_to addresses are verified as
2750 recipients, not senders.
2752 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
2753 the ratelimit ACL was added.
2755 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
2757 PH/46 Added extra information about PostgreSQL errors to the error string.
2759 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
2760 avoiding the need to install special zones in a real server. This is
2761 backwards compatible; if it can't find the fake resolver, it drops back.
2762 Thus, both old and new test suites can be run.
2764 TF/02 Added util/ratelimit.pl
2766 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
2767 clock is set back in time.
2769 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
2770 Candler <B.Candler@pobox.com>.
2772 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
2773 OK for addresses that are the result of redirections.
2775 PH/48 A number of further additions for the benefit of the new test suite,
2776 including a fake gethostbyname() that interfaces to the fake DNS resolver
2779 TF/06 The fix for widen_domains has also been applied to qualify_single and
2780 search_parents which are the other dnslookup options that can cause
2783 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
2786 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
2788 TF/07 Exim produced the error message "an SRV record indicated no SMTP
2789 service" if it encountered an MX record with an empty target hostname.
2790 The message is now "an MX or SRV record indicated no SMTP service".
2792 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
2793 if the DNS of the sending site is misconfigured. This is quite a
2794 common situation. This change restores the behaviour of treating a
2795 helo verification defer as a failure.
2797 PH/51 If self=fail was set on a router, the bounce message did not include the
2798 actual error message.
2804 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
2806 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
2807 command itself ended in error, the underlying message about the transport
2808 filter timeout was being overwritten with the pipe command error. Now the
2809 underlying error message should be appended to the second error message.
2811 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
2813 PH/02 Reduce the amount of output that "make" produces by default. Full output
2814 can still be requested.
2816 PH/03 The warning log line about a condition test deferring for a "warn" verb
2817 was being output only once per connection, rather than after each
2818 occurrence (because it was using the same function as for successful
2819 "warn" verbs). This seems wrong, so I have changed it.
2821 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
2822 it should not have, which might have caused a crash in the right
2823 circumstances, but probably never did.
2825 PH/04 Installed a modified version of Tony Finch's patch to make submission
2826 mode fix the return path as well as the Sender: header line, and to
2827 add a /name= option so that you can make the user's friendly name appear
2830 TF/03 Added the control = fakedefer ACL modifier.
2832 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
2833 Mark Lowes for thorough testing.
2835 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
2837 TK/03 Merged latest SRS patch from Miles Wilton.
2839 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
2840 with the definition in sysexits.h (which is #included earlier).
2841 Fortunately, Exim does not actually use EX_OK. The code used to try to
2842 preserve the sysexits.h value, by assumimg that macro definitions were
2843 scanned for macro replacements. I have been disabused of this notion,
2844 so now the code just undefines EX_OK before #including unistd.h.
2846 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
2847 in the smtp transport. When a block could not be written in a single
2848 write() function, the timeout was being re-applied to each part-write.
2849 This seems wrong - if the receiver was accepting one byte at a time it
2850 would take for ever. The timeout is now adjusted when this happens. It
2851 doesn't have to be particularly precise.
2853 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
2854 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
2856 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
2857 without a domain if the check to <postmaster@domain> fails.
2859 SC/01 Eximstats: added -xls and the ability to specify output files
2860 (patch written by Frank Heydlauf).
2862 SC/02 Eximstats: use FileHandles for outputing results.
2864 SC/03 Eximstats: allow any combination of xls, txt, and html output.
2866 SC/04 Eximstats: fixed display of large numbers with -nvr option
2868 SC/05 Eximstats: fixed merging of reports with empty tables.
2870 SC/06 Eximstats: added the -include_original_destination flag
2872 SC/07 Eximstats: removed tabs and trailing whitespace.
2874 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
2876 TK/06 MBOX spool code: Add real "From " MBOX separator line
2877 so the .eml file is really in mbox format (even though
2878 most programs do not really care). Patch from Alex Miller.
2880 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
2881 The latter is generated from $received_to and is only set if the
2882 message has one envelope recipient. SA can use these headers,
2883 obviously out-of-the-box. Patch from Alex Miller.
2885 PH/08 The ${def test on a variable was returning false if the variable's
2886 value was "0", contrary to what the specification has always said!
2887 The result should be true unless the variable is empty.
2889 PH/09 The syntax error of a character other than { following "${if
2890 def:variable_name" (after optional whitespace) was not being diagnosed.
2891 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
2892 accidental colon was present, for example, could give incorrect results.
2894 PH/10 Tidied the code in a number of places where the st_size field of a stat()
2895 result is used (not including appendfile, where other changes are about
2898 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
2899 This involved changing a lot of size variables from int to off_t. It
2900 should work with maildirs and everything.
2902 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
2903 spamd dying while we are connected to it.
2905 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
2908 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
2909 function for BDB 4.3.
2911 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
2913 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
2914 the sources for PCRE have been re-arranged and more files are now
2917 PH/15 The code I had for printing potentially long long variables in PH/11
2918 above was not the best (it lost precision). The length of off_t variables
2919 is now inspected at build time, and an appropriate printing format (%ld
2920 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
2921 to be "long long int" or "long int". This is needed for the internal
2922 formatting function string_vformat().
2924 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
2925 the configuration file to be ":syslog", then the script "guesses" where
2926 the logs files are, rather than using the compiled in default. In our
2927 case the guess is not the same as the compiled default, so the script
2928 suddenly stopped working when I started to use syslog. The patch checks
2929 to see if log_file_path is "". If so, it attempts to read it from exim
2930 with no configuration file to get the compiled in version, before it
2931 falls back to the previous guessing code."
2933 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
2934 implementing BATV in an Exim configuration. See NewStuff for the gory
2937 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
2938 Makefile that are specific to HP-UX.
2940 PH/18 If the "use_postmaster" option was set for a recipient callout together
2941 with the "random" option, the postmaster address was used as the MAIL
2942 FROM address for the random test, but not for the subsequent recipient
2943 test. It is now used for both.
2945 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
2946 patch removes a few documentation additions to RFC 3028, because the
2947 latest draft now contains them. It adds the new en;ascii-case comparator
2948 and a new error check for 8bit text in MIME parts. Comparator and
2949 require names are now matched exactly. I enabled the subaddress
2950 extension, but it is not well tested yet (read: it works for me)."
2952 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
2953 rework some of the code of TK/09 above to avoid the hardwired use of
2954 "%lld" and "long long". Replaced the call to snprintf() with a call to
2957 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
2958 records point to non-existent hosts", "retry timeout exceeded", and
2959 "retry time not reached for any host after a long failure period".
2961 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
2962 experimental DomainKeys support:
2964 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
2965 (2) On an error such as an illegally used "control", the wrong name for
2966 the control was given.
2968 These problems did NOT occur unless DomainKeys support was compiled.
2970 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
2972 PH/24 Added ${if match_ip condition.
2974 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
2975 databases so that it will be absolutely obvious if a crash occurs in the
2976 DB library. This is a regular occurrence (often caused by mis-matched
2979 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
2980 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
2981 picked up on a user's system that detects such things. There doesn't seem
2982 to be a gcc warning option for this - only an attribute that has to be
2983 put on the function's prototype. It seems that in Fedora Core 4 they have
2984 set this on a number of new functions. No doubt there will be more in due
2987 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
2988 specify a transport. However, if an address that was verified by such a
2989 router was the subject of a callout, Exim crashed because it tried to
2990 read the rcpt_include_affixes from the non-existent transport. Now it
2991 just assumes that the setting of that option is false. This bug was
2992 introduced by 4.51/PH/31.
2994 PH/28 Changed -d+all to exclude +memory, because that information is very
2995 rarely of interest, but it makes the output a lot bigger. People tend to
2996 do -d+all out of habit.
2998 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
2999 code in os-type was giving problems when libc.so lives in lib64, like on
3002 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
3003 aren't the modern standard, and it seems that some systems' include files
3004 don't always have them. Exim was already checking for some of the newer
3005 ones like T_AAAA, and defining it itself. I've added checks for all the
3006 record types that Exim uses.
3008 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
3009 not automatically generating a new one, as it is supposed to. This
3010 prevented TLS from working. If the file did exist, but contained invalid
3011 data, a new version was generated, as expected. It was only the case of a
3012 non-existent file that was broken.
3014 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
3015 with a change in libdomainkeys > 0.64.
3017 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
3018 from DNS. If the selector record carries the flag, it now has
3019 precedence over the domain-wide flag.
3021 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
3023 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
3024 the use of a port name that isn't defined in /etc/services) occurred, the
3025 message was deferred as in a normal delivery, and thus remained on the
3026 spool, instead of being failed because of the mua_wrapper setting. This
3027 is now fixed, and I tidied up some of the mua_wrapper messages at the
3030 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
3031 the messages in a hash of arrays rather than using individual hashes.
3032 This is a bit cleaner and results in dramatic memory savings, albeit
3033 at a slight CPU cost.
3035 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
3036 as requested by Marc Sherman.
3038 SC/10 Eximstats: added histograms for user specified patterns as requested
3041 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
3043 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
3044 fopen() in the content-scanning modules that did not already have it.
3050 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
3051 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
3053 TK/02 Fix ACL "control" statement not being available in MIME ACL.
3055 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
3057 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
3058 to test Sieve filters that use "vacation".
3060 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
3061 that changes the way the GnuTLS parameters are stored in the cache file.
3062 The new format can be generated externally. For backward compatibility,
3063 if the data in the cache doesn't make sense, Exim assumes it has read an
3064 old-format file, and it generates new data and writes a new file. This
3065 means that you can't go back to an older release without removing the
3068 PH/03 A redirect router that has both "unseen" and "one_time" set does not
3069 work if there are any delivery delays because "one_time" forces the
3070 parent to be marked "delivered", so its unseen clone is never tried
3071 again. For this reason, Exim now forbids the simultaneous setting of
3074 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
3075 redirected to themselves ("homonym" addresses). Read the long ChangeLog
3076 entry if you want to know the details. The fix, however, neglected to
3077 consider the case when local delivery batching is involved. The test for
3078 "previously delivered" was not happening when checking to see if an
3079 address could be batched with a previous (undelivered) one; under
3080 certain circumstances this could lead to multiple deliveries to the same
3083 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
3084 in its include files, and this causes problems building Exim.
3086 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
3087 header_syntax) but Exim was just ignoring anything given after a slash.
3088 In particular, this caused confusion with an attempt to use "verify =
3089 reverse_host_lookup/defer_ok". An error is now given when options are
3090 supplied for verify items that do not have them. (Maybe reverse_host_
3091 lookup should have a defer_ok option, but that's a different point.)
3093 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
3094 defined by RFC 821) to 2048, because there were problems with some AUTH
3095 commands, and RFC 1869 says the size should be increased for extended
3096 SMTP commands that take arguments.
3098 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
3101 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
3102 "unknown" error; now it says that the functionality isn't in the binary.
3104 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
3105 an address' error message when a string expansion fails (syntax or
3106 whatever). Otherwise the password may appear in the log. Following change
3107 PH/42 below, there is no longer a chance of it appearing in a bounce
3110 PH/11 Installed exipick version 20050225.0 from John Jetmore.
3112 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
3113 of its addresses was ever tried. (Bugzilla bug #2.)
3115 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
3116 the result incorrectly in the debug output. (It correctly added a newline
3117 to what was transported.)
3119 TF/01 Added $received_time.
3121 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
3122 commented out examples of how to interface to a virus scanner and to
3123 SpamAssassin. Also added commented examples of av_scanner and
3124 spamd_address settings.
3126 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
3127 and controls are allowed in which ACLs. There were a couple of minor
3128 errors. Some of the entries in the conditions table (which is a table of
3129 where they are NOT allowed) were getting very unwieldy; rewrote them as a
3130 negation of where the condition IS allowed.
3132 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
3134 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
3135 header file does not have a version number, so I've had to invent a new
3136 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
3137 API. The code is untested by me (my Linux distribution still has 0.3.2 of
3138 radiusclient), but it was contributed by a Radius user.
3140 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
3141 files or directories, for OpenSSL.
3143 PH/19 When an Exim process that is running as root has to create an Exim log
3144 file, it does so in a subprocess that runs as exim:exim so as to get the
3145 ownership right at creation (otherwise, other Exim processes might see
3146 the file with the wrong ownership). There was no test for failure of this
3147 fork() call, which would lead to the process getting stuck as it waited
3148 for a non-existent subprocess. Forks do occasionally fail when resources
3149 run out. I reviewed all the other calls to fork(); they all seem to check
3152 PH/20 When checking for unexpected SMTP input at connect time (before writing
3153 the banner), Exim was not dealing correctly with a non-positive return
3154 from the read() function. If the client had disconnected by this time,
3155 the result was a log entry for a synchronization error with an empty
3156 string after "input=" when read() returned zero. If read() returned -1
3157 (an event I could not check), uninitialized data bytes were printed.
3158 There were reports of junk text (parts of files, etc) appearing after
3161 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
3163 PH/22 Added support for macro redefinition, and (re)definition in between
3164 driver and ACL definitions.
3166 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
3167 forgetting to use the resulting value; it was using the unexpanded value.
3169 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
3170 hadn't been configured. The fix is from Juergen Kreileder, who
3171 understands it better than I do:
3173 "Here's what I see happening with three configured cyrus_sasl
3174 authenticators configured (plain, login, cram-md5):
3176 On startup auth_cyrus_sasl_init() gets called for each of these.
3177 This means three calls to sasl_listmech() without a specified mech_list.
3178 => SASL tests which mechs of all available mechs actually work
3179 => three warnings about OTP not working
3180 => the returned list contains: plain, login, cram-md5, digest-md5, ...
3182 With the patch, sasl_listmech() also gets called three times. But now
3183 SASL's mech_list option is set to the server_mech specified in the the
3184 authenticator. Or in other words, the answer from sasl_listmech()
3185 gets limited to just the mech you're testing for (which is different
3187 => the return list contains just 'plain' or 'login', 'cram-md5' or
3188 nothing depending on the value of ob->server_mech.
3190 I've just tested the patch: Authentication still works fine,
3191 unavailable mechs specified in the exim configuration are still
3192 caught, and the auth.log warnings about OTP are gone."
3194 PH/25 When debugging is enabled, the contents of the command line are added
3195 to the debugging output, even when log_selector=+arguments is not
3198 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
3199 answer is "GNU", and only if the return is "GNU/something" is the answer
3202 PH/27 $acl_verify_message is now set immediately after the failure of a
3203 verification in an ACL, and so is available in subsequent modifiers. In
3204 particular, the message can be preserved by coding like this:
3206 warn !verify = sender
3207 set acl_m0 = $acl_verify_message
3209 Previously, $acl_verify_message was set only while expanding "message"
3210 and "log_message" when a very denied access.
3212 PH/28 Modified OS/os.c-Linux with
3214 -#ifndef OS_LOAD_AVERAGE
3215 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
3217 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
3218 nomenclature these days.)
3220 PH/29 Installed patch from the Sieve maintainer that adds the options
3221 sieve_useraddress and sieve_subaddress to the redirect router.
3223 PH/30 In these circumstances:
3224 . Two addresses routed to the same list of hosts;
3225 . First host does not offer TLS;
3226 . First host accepts first address;
3227 . First host gives temporary error to second address;
3228 . Second host offers TLS and a TLS session is established;
3229 . Second host accepts second address.
3230 Exim incorrectly logged both deliveries with the TLS parameters (cipher
3231 and peerdn, if requested) that were in fact used only for the second
3234 PH/31 When doing a callout as part of verifying an address, Exim was not paying
3235 attention to any local part prefix or suffix that was matched by the
3236 router that accepted the address. It now behaves in the same way as it
3237 does for delivery: the affixes are removed from the local part unless
3238 rcpt_include_affixes is set on the transport.
3240 PH/32 Add the sender address, as F=<...>, to the log line when logging a
3241 timeout during the DATA phase of an incoming message.
3243 PH/33 Sieve envelope tests were broken for match types other than :is. I have
3244 applied a patch sanctioned by the Sieve maintainer.
3246 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
3247 the uid or gid is negative. A case of a negative gid caused this to be
3248 noticed. The fix allows for either to be negative.
3250 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
3251 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
3254 PH/36 The change PH/12 above was broken. Fixed it.
3256 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
3257 the grounds that routing the same address twice would always produce the
3258 same answer. This might have been true once, but it is certainly no
3259 longer true now. Routing a child address may depend on the previous
3260 routing that produced that child. Some complicated redirection strategies
3261 went wrong when messages had multiple recipients, and made Exim's
3262 behaviour dependent on the order in which the addresses were given.
3264 I have moved the duplicate checking until after the routing is complete.
3265 Exim scans the addresses that are assigned to local and remote
3266 transports, and removes any duplicates. This means that more work will be
3267 done, as duplicates will always all be routed, but duplicates are
3268 presumably rare, so I don't expect this is of any significance.
3270 For deliveries to pipes, files, and autoreplies, the duplicate checking
3271 still happens during the routing process, since they are not going to be
3274 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
3275 It corrects a timeout issue with spamd. This is Ian's comment: "The
3276 background is that sometimes spamd either never reads data from a
3277 connection it has accepted, or it never writes response data. The exiscan
3278 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
3279 blindly assumes that writes won't block so it may never time out."
3281 PH/39 Allow G after quota size as well as K and M.
3283 PH/40 The value set for $authenticated_id in an authenticator may not contain
3284 binary zeroes or newlines because the value is written to log lines and
3285 to spool files. There was no check on this. Now the value is run through
3286 the string_printing() function so that such characters are converted to
3287 printable escape sequences.
3289 PH/41 $message_linecount is a new variable that contains the total number of
3290 lines in the message. Compare $body_linecount, which is the count for the
3293 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3294 bounce and delay warning messages, except in certain special cases, which
3297 (a) An SMTP error message from a remote host;
3298 (b) A message specified in a :fail: redirection;
3299 (c) A message specified in a "fail" command in a system filter;
3300 (d) A message specified in a FAIL return from the queryprogram router;
3301 (e) A message specified by the cannot_route_message router option.
3303 In these cases only, Exim does include the error details in bounce and
3304 warning messages. There are also a few cases where bland messages such
3305 as "unrouteable address" or "local delivery error" are given.
3307 PH/43 $value is now also set for the "else" part of a ${run expansion.
3309 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3310 being worked on, but at least Exim now implements the latest version to
3313 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3314 process to complete was treated as a delivery failure, a timeout while
3315 writing the message to the pipe was logged, but erroneously treated as a
3316 successful delivery. Such timeouts include transport filter timeouts. For
3317 consistency with the overall process timeout, these timeouts are now
3318 treated as errors, giving rise to delivery failures by default. However,
3319 there is now a new Boolean option for the pipe transport called
3320 timeout_defer, which, if set TRUE, converts the failures into defers for
3321 both kinds of timeout. A transport filter timeout is now identified in
3324 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3325 systems where "make" and "gmake" are different, calling "gmake" at top
3326 level broke things. I've arranged for the value of $(MAKE) to be passed
3327 from the Makefile to this script so that it can call the same version of
3331 A note about Exim versions 4.44 and 4.50
3332 ----------------------------------------
3334 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3335 changes of various kinds. As a consequence, a big documentation update was
3336 needed. This delayed the release for rather longer than seemed good, especially
3337 in the light of a couple of (minor) security issues. Therefore, the changes
3338 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3339 release. So 4.44 and 4.50 are in effect two different branches that both start
3342 I have left the 4.50 change log unchanged; it contains all the changes since
3343 4.43. The change log for 4.44 is below; many of its items are identical to
3344 those for 4.50. This seems to be the most sensible way to preserve the
3345 historical information.
3351 1. Minor wording change to the doc/README.SIEVE file.
3353 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3354 computation of the current number of files was incorrect.
3356 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3357 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3360 4. Give more explanation in the error message when the command for a transport
3361 filter fails to execute.
3363 5. There are several places where Exim runs a non-Exim command in a
3364 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3365 was being done only for the command run by the queryprogram router. It is
3366 now done for all such subprocesses. The other cases are: ${run, transport
3367 filters, and the commands run by the lmtp and pipe transports.
3369 6. Added CONFIGURE_GROUP build-time option.
3371 7. Some older OS have a limit of 256 on the maximum number of file
3372 descriptors. Exim was using setrlimit() to set 1000 as a large value
3373 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3374 systems. I've change it so that if it can't get 1000, it tries for 256.
3376 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3377 was an oversight, and furthermore, ever since the addition of extra
3378 controls (e.g. 4.43/32), the checks on when to allow different forms of
3379 "control" were broken. There should now be diagnostics for all cases when a
3380 control that does not make sense is encountered.
3382 9. Added the /retain_sender option to "control=submission".
3384 10. $recipients is now available in the predata ACL (oversight).
3386 11. Tidy the search cache before the fork to do a delivery from a message
3387 received from the command line. Otherwise the child will trigger a lookup
3388 failure and thereby defer the delivery if it tries to use (for example) a
3389 cached ldap connection that the parent has called unbind on.
3391 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3392 of $address_data from the recipient verification was clobbered by the
3393 sender verification.
3395 13. The value of address_data from a sender verification is now available in
3396 $sender_address_data in subsequent conditions in the ACL statement.
3398 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3400 15. Added a new option "connect=<time>" to callout options, to set a different
3403 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3404 was its contents. (It was OK if the option was not defined at all.)
3406 17. A "Completed" log line is now written for messages that are removed from
3407 the spool by the -Mrm option.
3409 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3410 information about exactly what failed.
3412 19. Added -dd to debug only the daemon process.
3414 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3415 handles timeouts, both on the server side and network timeouts. Renamed the
3416 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3418 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3419 It is now set to "smtps".
3421 22. $host_address is now set to the target address during the checking of
3422 ignore_target_hosts.
3424 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3425 being passed; this would have caused $sender_host_name to have been used if
3426 matching the list had actually called for a host name (not very likely,
3427 since this list is usually IP addresses). A host name is now passed as
3430 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3431 code that specifies a non-restarting handler (typically sigaction() in
3432 modern systems) in an attempt to fix a rare and obscure crash bug.
3434 25. Narrowed the window for a race in the daemon that could cause it to ignore
3435 SIGCHLD signals. This is not a major problem, because they are used only to
3436 wake it up if nothing else does.
3438 26. A malformed maildirsize file could cause Exim to calculate negative values
3439 for the mailbox size or file count. Odd effects could occur as a result.
3440 The maildirsize information is now recalculated if the size or filecount
3443 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3444 support for a long time. Removed HAVE_SYS_VFS_H.
3446 28. Installed the latest version of exipick from John Jetmore.
3448 29. In an address list, if the pattern was not a regular expression, an empty
3449 subject address (from a bounce message) matched only if the pattern was an
3450 empty string. Non-empty patterns were not even tested. This was the wrong
3451 because it is perfectly reasonable to use an empty address as part of a
3452 database query. An empty address is now tested by patterns that are
3453 lookups. However, all the other forms of pattern expect the subject to
3454 contain a local part and a domain, and therefore, for them, an empty
3455 address still always fails if the pattern is not itself empty.
3457 30. Exim went into a mad DNS loop when attempting to do a callout where the
3458 host was specified on an smtp transport, and looking it up yielded more
3459 than one IP address.
3461 31. Re-factored the code for checking spool and log partition space into a
3462 function that finds that data and another that does the check. The former
3463 is then used to implement four new variables: $spool_space, $log_space,
3464 $spool_inodes, and $log_inodes.
3466 32. The RFC2047 encoding function was originally intended for short strings
3467 such as real names; it was not keeping to the 75-character limit for
3468 encoded words that the RFC imposes. It now respects the limit, and
3469 generates multiple encoded words if necessary. To be on the safe side, I
3470 have increased the buffer size for the ${rfc2047: expansion operator from
3473 33. It is now permitted to omit both strings after an "if" condition; if the
3474 condition is true, the result is "true". As before, when the second string
3475 is omitted, a false condition yields an empty string. This makes it less
3476 cumbersome to write custom ACL and router conditions.
3478 34. Failure to deliver a bounce message always caused it to be frozen, even if
3479 there was an errors_to setting on the router. The errors_to setting is now
3482 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3483 canonical form (fully expanded) before being placed in
3484 $sender_host_address.
3486 36. The table in the code that translates DNS record types into text (T_A to
3487 "A" for instance) was missing entries for NS and CNAME. It is just possible
3488 that this could have caused confusion if both these types were looked up
3489 for the same domain, because the text type is used as part of Exim's
3490 per-process caching. But the chance of anyone hitting this buglet seems
3493 37. The dnsdb lookup has been extended in a number of ways.
3495 (1) There is a new type, "zns", which walks up the domain tree until it
3496 finds some nameserver records. It should be used with care.
3498 (2) There is a new type, "mxh", which is like "mx" except that it returns
3499 just the host names, not the priorities.
3501 (3) It is now possible to give a list of domains (or IP addresses) to be
3502 looked up. The behaviour when one of the lookups defers can be
3503 controlled by a keyword.
3505 (4) It is now possible to specify the separator character for use when
3506 multiple records are returned.
3508 38. The dnslists ACL condition has been extended: it is now possible to supply
3509 a list of IP addresses and/or domains to be looked up in a particular DNS
3512 39. Added log_selector=+queue_time_overall.
3514 40. When running the queue in the test harness, wait just a tad after forking a
3515 delivery process, to get repeatability of debugging output.
3517 41. Include certificate and key file names in error message when GnuTLS fails
3518 to set them up, because the GnuTLS error message doesn't include the name
3519 of the failing file when there is a problem reading it.
3521 42. Allow both -bf and -bF in the same test run.
3523 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
3525 44. The "Exiscan patch" is now merged into the mainline Exim source.
3527 45. Sometimes the final signoff response after QUIT could fail to get
3528 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3529 < 0 before doing a fflush(). This bug looks as though it goes back to the
3530 introduction of TLS in release 3.20, but "sometimes" must have been rare
3531 because the tests only now provoked it.
3533 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
3534 (this can affect the format of dates).
3536 47. exim_tidydb, when checking for the continued existence of a message for
3537 which it has found a message-specific retry record, was not finding
3538 messages that were in split spool directories. Consequently, it was
3539 deleting retry records that should have stayed in existence.
3541 48. Steve fixed some bugs in eximstats.
3543 49. The SPA authentication driver was not abandoning authentication and moving
3544 on to the next authenticator when an expansion was forced to fail,
3545 contradicting the general specification for all authenticators. Instead it
3546 was generating a temporary error. It now behaves as specified.
3548 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
3549 (the order specifies the preference for clients). The order is now AES256,
3550 AES128, 3DES, ARCFOUR128.
3552 51. Small patch to Sieve code - explicitly set From: when generating an
3555 52. Exim crashed if a remote delivery caused a very long error message to be
3556 recorded - for instance if somebody sent an entire SpamAssassin report back
3557 as a large number of 550 error lines. This bug was coincidentally fixed by
3558 increasing the size of one of Exim's internal buffers (big_buffer) that
3559 happened as part of the Exiscan merge. However, to be on the safe side, I
3560 have made the code more robust (and fixed the comments that describe what
3563 53. Now that there can be additional text after "Completed" in log lines (if
3564 the queue_time_overall log selector is set), a one-byte patch to exigrep
3565 was needed to allow it to recognize "Completed" as not the last thing in
3568 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
3569 patch that reportedly fixes this has been added. I am not expert enough to
3570 create a test for it. This is what the patch creator wrote:
3572 "I found a little strange behaviour of ldap code when working with
3573 Windows 2003 AD Domain, where users was placed in more than one
3574 Organization Units. When I tried to give exim partial DN, the exit code
3575 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
3576 But simultaneously result of request was absolutely normal ldap result,
3577 so I produce this patch..."
3579 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
3580 REFERENCE, so I have modified the code to exclude the patch when that macro
3583 55. Some experimental protocols are using DNS PTR records for new purposes. The
3584 keys for these records are domain names, not reversed IP addresses. The
3585 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3586 leaves it alone. Component reversal etc. now happens only for IP addresses.
3589 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
3591 57. Double the size of the debug message buffer (to 2048) so that more of very
3592 long debug lines gets shown.
3594 58. The exicyclog utility now does better if the number of log files to keep
3595 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
3597 59. Two changes related to the smtp_active_hostname option:
3599 (1) $smtp_active_hostname is now available as a variable.
3600 (2) The default for smtp_banner uses $smtp_active_hostname instead
3601 of $primary_hostname.
3603 60. The host_aton() function is supposed to be passed a string that is known
3604 to be a valid IP address. However, in the case of IPv6 addresses, it was
3605 not checking this. This is a hostage to fortune. Exim now panics and dies
3606 if the condition is not met. A case was found where this could be provoked
3607 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3608 components; fortuitously, this particular loophole had already been fixed
3609 by change 4.50/55 above.
3611 If there are any other similar loopholes, the new check in host_aton()
3612 itself should stop them being exploited. The report I received stated that
3613 data on the command line could provoke the exploit when Exim was running as
3614 exim, but did not say which command line option was involved. All I could
3615 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3616 running as the user.
3619 61. There was a buffer overflow vulnerability in the SPA authentication code
3620 (which came originally from the Samba project). I have added a test to the
3621 spa_base64_to_bits() function which I hope fixes it.
3624 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
3625 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
3627 63. The daemon start-up calls getloadavg() while still root for those OS that
3628 need the first call to be done as root, but it missed one case: when
3629 deliver_queue_load_max is set with deliver_drop_privilege. This is
3630 necessary for the benefit of the queue runner, because there is no re-exec
3631 when deliver_drop_privilege is set.
3633 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
3634 This has been fixed.
3636 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3637 was in use, was not putting the data itself into the right store pool;
3638 consequently, it could be overwritten for a subsequent message in the same
3639 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3642 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
3644 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
3645 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
3646 the function were treating the return as a boolean value, which happened to
3647 work because 0=false and not-0=true, but is not correct code.
3649 68. The host_aton() function was not handling scoped IPv6 addresses (those
3650 with, for example, "%eth0" on the end) correctly.
3652 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
3653 negated items (that is, ~something) in unsigned ints. Some compilers
3654 apparently mutter when there is no cast.
3656 70. If an address verification called from an ACL failed, and did not produce a
3657 user-specific message (i.e. there was only a "system" message), nothing was
3658 put in $acl_verify_message. In this situation, it now puts the system
3661 71. Change 4.23/11 added synchronization checking at the start of an SMTP
3662 session; change 4.31/43 added the unwanted input to the log line - except
3663 that it did not do this in the start of session case. It now does.
3665 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
3666 This is wrong and can cause the other end to generate a synchronization
3667 error if it is another Exim or anything else that does the synchronization
3668 check. A QUIT command is no longer sent after a timeout.
3670 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
3671 during host lookups.
3673 74. The defer_ok option of callout verification was not working if it was used
3674 when verifying addresses in header lines, that is, for this case:
3676 verify = header_sender/callout=defer_ok
3678 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
3679 those file descriptors could be used for SMTP connections. If anything
3680 wrote to stderr (the example that came up was "warn" in embedded Perl), it
3681 could be sent to the SMTP client, causing chaos. The daemon now opens
3682 stdin, stdout, and stderr to /dev/null when it puts itself into the
3685 76. Arrange for output from Perl's "warn" command to be written to Exim's main
3686 log by default. The user can override this with suitable Perl magic.
3688 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
3689 the log message when discard triggers, was not working for the DATA ACL or
3690 for the non-SMTP ACL.
3692 78. Error message wording change in sieve.c.
3694 79. If smtp_accept_max_per_host was set, the number of connections could be
3695 restricted to fewer than expected, because the daemon was trying to set up
3696 a new connection before checking whether the processes handling previous
3697 connections had finished. The check for completed processes is now done
3698 earlier. On busy systems, this bug wouldn't be noticed because something
3699 else would have woken the daemon, and it would have reaped the completed
3702 80. If a message was submitted locally by a user whose login name contained one
3703 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
3704 It caused a spool format error. I have fixed the spool reading code. A
3705 related problem was that the "from" clause in the Received: line became
3706 illegal because of the space(s). It is now covered by ${quote_local_part.
3708 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
3711 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
3713 83. Patch from Sieve maintainer to fix unterminated string problem in
3714 "vacation" handling.
3716 84. Some minor changes to the Linux configuration files to help with other
3717 OS variants using glibc.
3719 85. One more patch for Sieve to update vacation handling to latest spec.
3722 ----------------------------------------------------
3723 See the note above about the 4.44 and 4.50 releases.
3724 ----------------------------------------------------
3730 1. Change 4.43/35 introduced a bug that caused file counts to be
3731 incorrectly computed when quota_filecount was set in an appendfile
3734 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3735 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3738 3. Give more explanation in the error message when the command for a transport
3739 filter fails to execute.
3741 4. There are several places where Exim runs a non-Exim command in a
3742 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3743 was being done only for the command run by the queryprogram router. It is
3744 now done for all such subprocesses. The other cases are: ${run, transport
3745 filters, and the commands run by the lmtp and pipe transports.
3747 5. Some older OS have a limit of 256 on the maximum number of file
3748 descriptors. Exim was using setrlimit() to set 1000 as a large value
3749 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3750 systems. I've change it so that if it can't get 1000, it tries for 256.
3752 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3753 was an oversight, and furthermore, ever since the addition of extra
3754 controls (e.g. 4.43/32), the checks on when to allow different forms of
3755 "control" were broken. There should now be diagnostics for all cases when a
3756 control that does not make sense is encountered.
3758 7. $recipients is now available in the predata ACL (oversight).
3760 8. Tidy the search cache before the fork to do a delivery from a message
3761 received from the command line. Otherwise the child will trigger a lookup
3762 failure and thereby defer the delivery if it tries to use (for example) a
3763 cached ldap connection that the parent has called unbind on.
3765 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3766 of $address_data from the recipient verification was clobbered by the
3767 sender verification.
3769 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3770 was its contents. (It was OK if the option was not defined at all.)
3772 11. A "Completed" log line is now written for messages that are removed from
3773 the spool by the -Mrm option.
3775 12. $host_address is now set to the target address during the checking of
3776 ignore_target_hosts.
3778 13. When checking ignore_target_hosts for an ipliteral router, no host name was
3779 being passed; this would have caused $sender_host_name to have been used if
3780 matching the list had actually called for a host name (not very likely,
3781 since this list is usually IP addresses). A host name is now passed as
3784 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3785 code that specifies a non-restarting handler (typically sigaction() in
3786 modern systems) in an attempt to fix a rare and obscure crash bug.
3788 15. Narrowed the window for a race in the daemon that could cause it to ignore
3789 SIGCHLD signals. This is not a major problem, because they are used only to
3790 wake it up if nothing else does.
3792 16. A malformed maildirsize file could cause Exim to calculate negative values
3793 for the mailbox size or file count. Odd effects could occur as a result.
3794 The maildirsize information is now recalculated if the size or filecount
3797 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3798 support for a long time. Removed HAVE_SYS_VFS_H.
3800 18. Updated exipick to current release from John Jetmore.
3802 19. Allow an empty sender to be matched against a lookup in an address list.
3803 Previously the only cases considered were a regular expression, or an
3806 20. Exim went into a mad DNS lookup loop when doing a callout where the
3807 host was specified on the transport, if the DNS lookup yielded more than
3810 21. The RFC2047 encoding function was originally intended for short strings
3811 such as real names; it was not keeping to the 75-character limit for
3812 encoded words that the RFC imposes. It now respects the limit, and
3813 generates multiple encoded words if necessary. To be on the safe side, I
3814 have increased the buffer size for the ${rfc2047: expansion operator from
3817 22. Failure to deliver a bounce message always caused it to be frozen, even if
3818 there was an errors_to setting on the router. The errors_to setting is now
3821 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3822 canonical form (fully expanded) before being placed in
3823 $sender_host_address.
3825 24. Updated eximstats to version 1.33
3827 25. Include certificate and key file names in error message when GnuTLS fails
3828 to set them up, because the GnuTLS error message doesn't include the name
3829 of the failing file when there is a problem reading it.
3831 26. Expand error message when OpenSSL has problems setting up cert/key files.
3834 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
3835 (this can affect the format of dates).
3837 28. exim_tidydb, when checking for the continued existence of a message for
3838 which it has found a message-specific retry record, was not finding
3839 messages that were in split spool directories. Consequently, it was
3840 deleting retry records that should have stayed in existence.
3842 29. eximstats updated to version 1.35
3843 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
3844 1.35 - bugfix such that pie charts by volume are generated correctly
3846 30. The SPA authentication driver was not abandoning authentication and moving
3847 on to the next authenticator when an expansion was forced to fail,
3848 contradicting the general specification for all authenticators. Instead it
3849 was generating a temporary error. It now behaves as specified.
3851 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
3852 (the order specifies the preference for clients). The order is now AES256,
3853 AES128, 3DES, ARCFOUR128.
3855 31. Small patch to Sieve code - explicitly set From: when generating an
3858 32. Exim crashed if a remote delivery caused a very long error message to be
3859 recorded - for instance if somebody sent an entire SpamAssassin report back
3860 as a large number of 550 error lines. This bug was coincidentally fixed by
3861 increasing the size of one of Exim's internal buffers (big_buffer) that
3862 happened as part of the Exiscan merge. However, to be on the safe side, I
3863 have made the code more robust (and fixed the comments that describe what
3866 33. Some experimental protocols are using DNS PTR records for new purposes. The
3867 keys for these records are domain names, not reversed IP addresses. The
3868 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3869 leaves it alone. Component reversal etc. now happens only for IP addresses.
3872 34. The host_aton() function is supposed to be passed a string that is known
3873 to be a valid IP address. However, in the case of IPv6 addresses, it was
3874 not checking this. This is a hostage to fortune. Exim now panics and dies
3875 if the condition is not met. A case was found where this could be provoked
3876 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3877 components; fortuitously, this particular loophole had already been fixed
3878 by change 4.50/55 or 4.44/33 above.
3880 If there are any other similar loopholes, the new check in host_aton()
3881 itself should stop them being exploited. The report I received stated that
3882 data on the command line could provoke the exploit when Exim was running as
3883 exim, but did not say which command line option was involved. All I could
3884 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3885 running as the user.
3888 35. There was a buffer overflow vulnerability in the SPA authentication code
3889 (which came originally from the Samba project). I have added a test to the
3890 spa_base64_to_bits() function which I hope fixes it.
3893 36. The daemon start-up calls getloadavg() while still root for those OS that
3894 need the first call to be done as root, but it missed one case: when
3895 deliver_queue_load_max is set with deliver_drop_privilege. This is
3896 necessary for the benefit of the queue runner, because there is no re-exec
3897 when deliver_drop_privilege is set.
3899 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3900 was in use, was not putting the data itself into the right store pool;
3901 consequently, it could be overwritten for a subsequent message in the same
3902 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3905 38. Sometimes the final signoff response after QUIT could fail to get
3906 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3907 < 0 before doing a fflush(). This bug looks as though it goes back to the
3908 introduction of TLS in release 3.20, but "sometimes" must have been rare
3909 because the tests only now provoked it.
3915 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
3916 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
3917 Now it returns an integer. A number of calls were still expecting a T/F
3918 return. Fortuitously, in all cases, the tests worked in OK situations,
3919 which is the norm. However, things would have gone wrong on any write
3920 failures on the smtp file descriptor. This function is used when sending
3921 messages over SMTP and also when doing verify callouts.
3923 2. When Exim is called to do synchronous delivery of a locally submitted
3924 message (the -odf or -odi options), it no longer closes stderr before doing
3927 3. Implemented the mua_wrapper option.
3929 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
3931 5. Implemented the functions header_remove(), header_testname(),
3932 header_add_at_position(), and receive_remove_recipient(), and exported them
3935 6. If an ACL "warn" statement specified the addition of headers, Exim already
3936 inserted X-ACL-Warn: at the start if there was no header name. However, it
3937 was not making this test for the second and subsequent header lines if
3938 there were newlines in the string. This meant that an invalid header could
3939 be inserted if Exim was badly configured.
3941 7. Allow an ACL "warn" statement to add header lines at the start or after all
3942 the Received: headers, as well as at the end.
3944 8. Added the rcpt_4xx retry error code.
3946 9. Added postmaster_mailfrom=xxx to callout verification option.
3948 10. Added mailfrom=xxxx to the callout verification option, for verify=
3951 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
3952 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
3954 12. Inserted some casts to stop certain compilers warning when using pointer
3955 differences as field lengths or precisions in printf-type calls (mostly
3956 affecting debugging statements).
3958 13. Added optional readline() support for -be (dynamically loaded).
3960 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
3961 same clock tick as a message's arrival, so that its received time was the
3962 same as the "first fail" time on the retry record, and that message
3963 remained on the queue past the ultimate address timeout, every queue runner
3964 would try a delivery (because it was past the ultimate address timeout) but
3965 after another failure, the ultimate address timeout, which should have then
3966 bounced the address, did not kick in. This was a "< instead of <=" error;
3967 in most cases the first failure would have been in the next clock tick
3968 after the received time, and all would be well.
3970 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
3971 being recognized when the domain list was tested by the match_domain
3972 condition in an expansion string.
3974 16. Added the ${str2b64: operator.
3976 17. Exim was always calling setrlimit() to set a large limit for the number of
3977 processes, without checking whether the existing limit was already
3978 adequate. (It did check for the limit on file descriptors.) Furthermore,
3979 errors from getrlimit() and setrlimit() were being ignored. Now they are
3980 logged to the main and panic logs, but Exim does carry on, to try to do its
3981 job under whatever limits there are.
3983 18. Imported PCRE 5.0.
3985 19. Trivial typo in log message " temporarily refused connection" (the leading
3988 20. If the log selector return_path_on_delivery was set and an address was
3989 redirected to /dev/null, the delivery process crashed because it assumed
3990 that a return path would always be set for a "successful" delivery. In this
3991 case, the whole delivery is bypassed as an optimization, and therefore no
3994 21. Internal re-arrangement: the function for sending a challenge and reading
3995 a response while authentication was assuming a zero-terminated challenge
3996 string. It's now changed to take a pointer and a length, to allow for
3997 binary data in such strings.
3999 22. Added the cyrus_sasl authenticator (code supplied by MBM).
4001 23. Exim was not respecting finduser_retries when seeking the login of the
4002 uid under which it was called; it was always trying 10 times. (The default
4003 setting of finduser_retries is zero.) Also, it was sleeping after the final
4004 failure, which is pointless.
4006 24. Implemented tls_on_connect_ports.
4008 25. Implemented acl_smtp_predata.
4010 26. If the domain in control=submission is set empty, Exim assumes that the
4011 authenticated id is a complete email address when it generates From: or
4012 Sender: header lines.
4014 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
4015 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
4016 chown and chgrp in /bin and hostname in /usr/bin.
4018 28. Exim was keeping the "process log" file open after each use, just as it
4019 does for the main log. This opens the possibility of it remaining open for
4020 long periods when the USR1 signal hits a daemon. Occasional processlog
4021 errors were reported, that could have been caused by this. Anyway, it seems
4022 much more sensible not to leave this file open at all, so that is what now
4025 29. The long-running daemon process does not normally write to the log once it
4026 has entered its main loop, and it closes the log before doing so. This is
4027 so that log files can straightforwardly be renamed and moved. However,
4028 there are a couple of unusual error situations where the daemon does write
4029 log entries, and I had neglected to close the log afterwards.
4031 30. The text of an SMTP error response that was received during a remote
4032 delivery was being truncated at 512 bytes. This is too short for some of
4033 the long messages that one sometimes sees. I've increased the limit to
4036 31. It is now possible to make retry rules that apply only when a message has a
4037 specific sender, in particular, an empty sender.
4039 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
4040 it possible to be selective about when SMTP synchronization is enforced.
4042 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
4044 32. Implemented hosts_connection_nolog.
4046 33. Added an ACL for QUIT.
4048 34. Setting "delay_warning=" to disable warnings was not working; it gave a
4051 35. Added mailbox_size and mailbox_filecount to appendfile.
4053 36. Added control = no_multiline_responses to ACLs.
4055 37. There was a bug in the logic of the code that waits for the clock to tick
4056 in the case where the clock went backwards by a substantial amount such
4057 that the microsecond fraction of "now" was more than the microsecond
4058 fraction of "then" (but the whole seconds number was less).
4060 38. Added support for the libradius Radius client library this is found on
4061 FreeBSD (previously only the radiusclient library was supported).
4067 1. When certain lookups returned multiple values in the form name=value, the
4068 quoting of the values was not always being done properly. Specifically:
4069 (a) If the value started with a double quote, but contained no whitespace,
4071 (b) If the value contained whitespace other than a space character (i.e.
4072 tabs or newlines or carriage returns) it was not quoted.
4073 This fix has been applied to the mysql and pgsql lookups by writing a
4074 separate quoting function and calling it from the lookup code. The fix
4075 should probably also be applied to nisplus, ibase and oracle lookups, but
4076 since I cannot test any of those, I have not disturbed their existing code.
4078 2. A hit in the callout cache for a specific address caused a log line with no
4079 reason for rejecting RCPT. Now it says "Previous (cached) callout
4080 verification failure".
4082 3. There was an off-by-one bug in the queryprogram router. An over-long
4083 return line was truncated at 256 instead of 255 characters, thereby
4084 overflowing its buffer with the terminating zero. As well as fixing this, I
4085 have increased the buffer size to 1024 (and made a note to document this).
4087 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
4088 when Exim is waiting for an SMTP response from a remote server, Exim
4089 restarts its select() call on the socket, thereby resetting its timeout.
4090 This is not a problem when such interrupts are rare. Somebody set up a cron
4091 job to run exiwhat every 2 minutes, which is less than the normal select()
4092 timeout (5 or 10 minutes). This meant that the select() timeout never
4093 kicked in because it was always reset. I have fixed this by comparing the
4094 time when an interrupt arrives with the time at the start of the first call
4095 to select(). If more time than the timeout has elapsed, the interrupt is
4096 treated as a timeout.
4098 5. Some internal re-factoring in preparation for the addition of Sieve
4099 extensions (by MH). In particular, the "personal" test is moved to a
4100 separate function, and given an option for scanning Cc: and Bcc: (which is
4101 not set for Exim filters).
4103 6. When Exim created an email address using the login of the caller as the
4104 local part (e.g. when creating a From: or Sender: header line), it was not
4105 quoting the local part when it contained special characters such as @.
4107 7. Installed new OpenBSD configuration files.
4109 8. Reworded some messages for syntax errors in "and" and "or" conditions to
4110 try to make them clearer.
4112 9. Callout options, other than the timeout value, were being ignored when
4113 verifying sender addresses in header lines. For example, when using
4115 verify = header_sender/callout=no_cache
4117 the cache was (incorrectly) being used.
4119 10. Added a missing instance of ${EXE} to the exim_install script; this affects
4120 only the Cygwin environment.
4122 11. When return_path_on_delivery was set as a log selector, if different remote
4123 addresses in the same message used different return paths and parallel
4124 remote delivery occurred, the wrong values would sometimes be logged.
4125 (Whenever a remote delivery process finished, the return path value from
4126 the most recently started remote delivery process was logged.)
4128 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
4129 lines when AUTH and/or TLS are in use. This is the "received protocol"
4130 field. Exim used to use "asmtp" for authenticated SMTP, without any
4131 indication (in the protocol name) for TLS use. Now it follows the RFC and
4132 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
4133 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
4134 names appear in log lines as well as in Received: header lines.
4136 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
4137 extensions, and comparison tests, and to fix some bugs.
4139 14. Changes to the "personal" filter test:
4141 (1) The test was buggy in that it was just doing the equivalent of
4142 "contains" tests on header lines. For example, if a user's address was
4143 anne@some.where, the "personal" test would incorrectly be true for
4145 To: susanne@some.where
4147 This test is now done by extracting each address from the header in turn,
4148 and checking the entire address. Other tests that are part of "personal"
4149 are now done using regular expressions (for example, to check local parts
4150 of addresses in From: header lines).
4152 (2) The list of non-personal local parts in From: addresses has been
4153 extended to include "listserv", "majordomo", "*-request", and "owner-*",
4154 taken from the Sieve specification recommendations.
4156 (3) If the message contains any header line starting with "List-" it is
4157 treated as non-personal.
4159 (4) The test for "circular" in the Subject: header line has been removed
4160 because it now seems ill-conceived.
4162 15. Minor typos in src/EDITME comments corrected.
4164 16. Installed latest exipick from John Jetmore.
4166 17. If headers_add on a router specified a text string that was too long for
4167 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
4168 of string_sprintf() is now avoided.
4170 18. $message_body_size was not set (it was always zero) when running the DATA
4171 ACL and the local_scan() function.
4173 19. For the "mail" command in an Exim filter, no default was being set for
4174 the once_repeat time, causing a random time value to be used if "once" was
4175 specified. (If the value happened to be <= 0, no repeat happened.) The
4176 default is now 0s, meaning "never repeat". The "vacation" command was OK
4177 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
4178 (I found it when inspecting the code).
4180 20. There is now an overall timeout for performing a callout verification. It
4181 defaults to 4 times the callout timeout, which applies to individual SMTP
4182 commands during the callout. The overall timeout applies when there is more
4183 than one host that can be tried. The timeout is checked before trying the
4184 next host. This prevents very long delays if there are a large number of
4185 hosts and all are timing out (e.g. when the network connections are timing
4186 out). The value of the overall timeout can be changed by specifying an
4187 additional sub-option for "callout", called "maxwait". For example:
4189 verify = sender/callout=5s,maxwait=20s
4191 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
4192 to the end before writing, but this should make it even safer).
4194 22. Exim was forgetting that it had advertised PIPELINING for the second and
4195 subsequent messages on an SMTP connection. It was also not resetting its
4196 memory on STARTTLS and an internal HELO.
4198 23. When Exim logs an SMTP synchronization error within a session, it now
4199 records whether PIPELINING has been advertised or not.
4201 24. Added 3 instances of "(long int)" casts to time_t variables that were being
4202 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
4203 rather than long int.
4205 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
4207 26. Added the never_mail option to autoreply.
4213 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
4214 crash if the getsockname() call failed; this can happen if a connection is
4215 closed very soon after it is established. The problem was simply in the
4216 order in which certain operations were done, causing Exim to try to write
4217 to the SMTP stream before it had set up the file descriptor. The bug has
4218 been fixed by making things happen in the correct order.
4224 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
4225 before the connection was closed, thus losing the rejection response.
4227 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
4228 some early Solaris releases, but causes trouble in current releases where
4229 socklen_t is defined.
4231 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
4234 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
4237 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
4238 that releasing the top of it at the end releases what was used for sub-
4239 expansions (unless the block got too big). However, discard this block if
4240 the first thing is a variable or header, so that we can use its block when
4241 it is dynamic (useful for very large $message_headers, for example).
4243 6. Lookups now cache *every* query, not just the most recent. A new, separate
4244 store pool is used for this. It can be recovered when all lookup caches are
4245 flushed. Lookups now release memory at the end of their result strings.
4246 This has involved some general refactoring of the lookup sources.
4248 7. Some code has been added to the store_xxx() functions to reduce the amount
4249 of flapping under certain conditions.
4251 8. log_incoming_interface used to affect only the <= reception log lines. Now
4252 it causes the local interface and port to be added to several more SMTP log
4253 lines, for example "SMTP connection from", and rejection lines.
4255 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
4257 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
4259 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
4260 could be overwritten at the end of the current message (or the start of a
4261 new message if it was set in a HELO ACL). The value is now preserved for
4262 the duration of the SMTP connection.
4264 12. If a transport had a headers_rewrite setting, and a matching header line
4265 contained an unqualified address, that address was qualified, even if it
4266 did not match any rewriting rules. The underlying bug was that the values
4267 of the flags that permit the existence of unqualified sender and recipient
4268 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
4269 non-local messages, and by -bnq for local messages) were not being
4270 preserved with the message after it was received.
4272 13. When Exim was logging an SMTP synchronization error, it could sometimes log
4273 "next input=" as part of the text comprising the host identity instead of
4274 the correct text. The code was using the same buffer for two different
4275 strings. However, depending on which order the printing function evaluated
4276 its arguments, the bug did not always show up. Under Linux, for example, my
4277 test suite worked just fine.
4279 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
4280 doesn't work with some older versions of Perl. It has been changed to "my",
4281 which in any case is probably the better facility to use.
4283 15. A really picky compiler found some instances of statements for creating
4284 error messages that either had too many or two few arguments for the format
4287 16. The size of the buffer for calls to the DNS resolver has been increased
4288 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4289 for addresses that have a lot of PTR records. This alleviates a problem; it
4290 does not fully solve it.
4292 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4293 buffer now truncates the list and logs the incident, which is the same
4294 action as happens when Exim is looking up a host name and its aliases.
4295 Previously in this situation something unpredictable would happen;
4296 sometimes it was "internal error: store_reset failed".
4298 18. If a server dropped the connection unexpectedly when an Exim client was
4299 using GnuTLS and trying to read a response, the client delivery process
4300 crashed while trying to generate an error log message.
4302 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4303 string, for example:
4305 warn message = H1: something\nH2: something
4307 the text was added as a single header line from Exim's point of view
4308 though it ended up OK in the delivered message. However, searching for the
4309 second and subsequent header lines using $h_h2: did not work. This has been
4310 fixed. Similarly, if a system filter added multiple headers in this way,
4311 the routers could not see them.
4313 20. Expanded the error message when iplsearch is called with an invalid key to
4314 suggest using net-iplsearch in a host list.
4316 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4317 ACLs are no longer actually imposed (and a message to that effect is
4320 22. If a "gecos" field in a passwd entry contained escaped characters, in
4321 particular, if it contained a \" sequence, Exim got it wrong when building
4322 a From: or a Sender: header from that name. A second bug also caused
4323 incorrect handling when an unquoted " was present following a character
4324 that needed quoting.
4326 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4327 was not being matched caselessly.
4329 24. Arranged for all hyphens in the exim.8 source to be escaped with
4332 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4333 properly. Recipient callout cache records were still being keyed to include
4334 the sender, even when use_sender was set false. This led to far more
4335 callouts that were necessary. The sender is no longer included in the key
4336 when use_sender is false.
4338 26. Added "control = submission" modifier to ACLs.
4340 27. Added the ${base62d: operator to decode base 62 numbers.
4342 28. dnsdb lookups can now access SRV records.
4344 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4345 the configuration file.
4347 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4348 (-v) mode. This makes the output for a verbose queue run more intelligible.
4350 31. Added a use_postmaster feature to recipient callouts.
4352 32. Added the $body_zerocount variable, containing the number of binary zero
4353 bytes in the message body.
4355 33. The time of last modification of the "new" subdirectory is now used as the
4356 "mailbox time last read" when there is a quota error for a maildir
4359 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4361 35. Added +ignore_unknown as a special item in host lists.
4363 36. Code for decoding IPv6 addresses in host lists is now included, even if
4364 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4365 address was recognized as an IP address, but was then not correctly decoded
4366 into binary, causing unexpected and incorrect effects when compared with
4373 1. Very minor rewording of debugging text in manualroute to say "list of
4374 hosts" instead of "hostlist".
4376 2. If verify=header_syntax was set, and a header line with an unqualified
4377 address (no domain) and a large number of spaces between the end of the
4378 name and the colon was received, the reception process suffered a buffer
4379 overflow, and (when I tested it) crashed. This was caused by some obsolete
4380 code that should have been removed. The fix is to remove it!
4382 3. When running in the test harness, delay a bit after writing a bounce
4383 message to get a bit more predictability in the log output.
4385 4. Added a call to search_tidyup() just before forking a reception process. In
4386 theory, someone could use a lookup in the expansion of smtp_accept_max_
4387 per_host which, without the tidyup, could leave open a database connection.
4389 5. Added the variables $recipient_data and $sender_data which get set from a
4390 lookup success in an ACL "recipients" or "senders" condition, or a router
4391 "senders" option, similar to $domain_data and $local_part_data.
4393 6. Moved the writing of debug_print from before to after the "senders" test
4396 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4397 problems for message scanning, either using a data ACL, or using
4398 local_scan() because the Received: header was not generated till after they
4399 were called (in order to set the time as the time of reception completion).
4400 I have revised the way this works. The header is now generated after the
4401 body is received, but before the ACL or local_scan() are called. After they
4402 are run, the timestamp in the header is updated.
4408 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4409 before starting a queue runner without re-exec. This happened only when
4410 deliver_drop_privilege was set or when the Exim user was set to root. The
4411 effect of the bug was that timeouts during subsequent deliveries caused
4412 crashes instead of being properly handled. The handler is now left at its
4413 default (and expected) setting.
4415 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4416 message, again when deliver_drop_privilege is set or Exim is run as root.
4417 The bug described in (1) was not present in this case, but the tidying up
4418 of the other signals was missing. I have made the two cases consistent.
4420 3. The ignore_target_hosts setting on a manualroute router was being ignored
4421 for hosts that were looked up using the /MX notation.
4423 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4426 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4427 operated on the sender address. After changing the $sender_address to <>
4428 for the sender address verify, Exim was re-instated it as the original
4429 (before rewriting) address, but remembering that it had rewritten it, so it
4430 wasn't rewriting it again. This bug also had the effect of breaking the
4431 sender address verification caching when the sender address was rewritten.
4433 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4434 This has been changed so that if the ip literal address matches
4435 ignore_target_hosts, the router declines.
4437 7. Added expansion conditions match_domain, match_address, and match_local_
4438 part (NOT match_host).
4440 8. The placeholder for the Received: header didn't have a length field set.
4442 9. Added code to Exim itself and to exim_lock to test for a specific race
4443 condition that could lead to file corruption when using MBX delivery. The
4444 issue is with the lockfile that is created in /tmp. If this file is removed
4445 after a process has opened it but before that process has acquired a lock,
4446 there is the potential for a second process to recreate the file and also
4447 acquire a lock. This could lead to two Exim processes writing to the file
4448 at the same time. The added code performs the same test as UW imapd; it
4449 checks after acquiring the lock that its file descriptor still refers to
4450 the same named file.
4452 10. The buffer for building added header lines was of fixed size, 8192 bytes.
4453 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
4456 11. Added the smtp_active_hostname option. If used, this will typically be made
4457 to depend on the incoming interface address. Because $interface_address is
4458 not set up until the daemon has forked a reception process, error responses
4459 that can happen earlier (such as "too many connections") no longer contain
4462 12. If an expansion in a condition on a "warn" statement fails because a lookup
4463 defers, the "warn" statement is abandoned, and the next ACL statement is
4464 processed. Previously this caused the whole ACL to be aborted.
4466 13. Added the iplsearch lookup type.
4468 14. Added ident_timeout as a log selector.
4470 15. Added tls_certificate_verified as a log selector.
4472 16. Added a global option tls_require_ciphers (compare the smtp transport
4473 option of the same name). This controls incoming TLS connections.
4475 17. I finally figured out how to make tls_require_ciphers do a similar thing
4476 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
4477 before starting the TLS session.
4479 18. Tabs are now shown as \t in -bP output.
4481 19. If the log selector return_path_on_delivery was set, Exim crashed when
4482 bouncing a message because it had too many Received: header lines.
4484 20. If two routers both had headers_remove settings, and the first one included
4485 a superfluous trailing colon, the final name in the first list and the
4486 first name in the second list were incorrectly joined into one item (with a
4487 colon in the middle).
4493 1. Added -C and -D options to the exinext utility, mainly to make it easier
4494 to include in the automated testing, but these could be helpful when
4495 multiple configurations are in use.
4497 2. The exinext utility was not formatting the output nicely when there was
4498 an alternate port involved in the retry record key, nor when there was a
4499 message id as well (for retries that were specific to a specific message
4500 and a specific host). It was also confused by IPv6 addresses, because of
4501 the additional colons they contain. I have fixed the IPv4 problem, and
4502 patched it up to do a reasonable job for IPv6.
4504 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
4505 delivery, the log line now contains "pipelined" if PIPELINING was used.
4507 4. An SMTP transport process used to panic and die if the bind() call to set
4508 an explicit outgoing interface failed. This has been changed; it is now
4509 treated in the same way as a connect() failure.
4511 5. A reference to $sender_host_name in the part of a conditional expansion
4512 that was being skipped was still causing a DNS lookup. This no longer
4515 6. The def: expansion condition was not recognizing references to header lines
4516 that used bh_ and bheader_.
4518 7. Added the _cache feature to named lists.
4520 8. The code for checking quota_filecount in the appendfile transport was
4521 allowing one more file than it should have been.
4523 9. For compatibility with Sendmail, the command line option
4531 and sets the incoming protocol and host name (for trusted callers). The
4532 host name and its colon can be omitted when only the protocol is to be set.
4533 Note the Exim already has two private options, -pd and -ps, that refer to
4534 embedded Perl. It is therefore impossible to set a protocol value of "d" or
4535 "s", but I don't think that's a major issue.
4537 10. A number of refactoring changes to the code, none of which should affect
4540 (a) The number of logging options was getting close to filling up the
4541 32-bit word that was used as a bit map. I have split them into two classes:
4542 those that are passed in the argument to log_write(), and those that are
4543 only ever tested independently outside of that function. These are now in
4544 separate 32-bit words, so there is plenty of room for expansion again.
4545 There is no change in the user interface or the logging behaviour.
4547 (b) When building, for example, log lines, the code previously used a
4548 macro that called string_cat() twice, in order to add two strings. This is
4549 not really sufficiently general. Furthermore, there was one instance where
4550 it was actually wrong because one of the argument was used twice, and in
4551 one call a function was used. (As it happened, calling the function twice
4552 did not affect the overall behaviour.) The macro has been replaced by a
4553 function that can join an arbitrary number of extra strings onto a growing
4556 (c) The code for expansion conditions now uses a table and a binary chop
4557 instead of a serial search (which was left over from when there were very
4558 few conditions). Also, it now recognizes conditions like "pam" even when
4559 the relevant support is not compiled in: a suitably worded error message is
4560 given if an attempt is made to use such a condition.
4562 11. Added ${time_interval:xxxxx}.
4564 12. A bug was causing one of the ddress fields not to be passed back correctly
4565 from remote delivery subprocesses. The field in question was not being
4566 subsequently used, so this caused to problems in practice.
4568 13. Added new log selectors queue_time and deliver_time.
4570 14. Might have fixed a bug in maildirsizefile handling that threw up
4571 "unexpected character" debug warnings, and recalculated the data
4572 unnecessarily. In any case, I expanded the warning message to give more
4575 15. Added the message "Restricted characters in address" to the statements in
4576 the default ACL that block characters like @ and % in local parts.
4578 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
4579 Three changes have been made:
4581 (a) There was a serious bug; a negative response to MAIL caused the whole
4582 recipient domain to be cached as invalid, thereby blocking all messages
4583 to all local parts at the same domain, from all senders. This bug has
4584 been fixed. The domain is no longer cached after a negative response to
4585 MAIL if the sender used is not empty.
4587 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
4590 (c) A new callout option, "use_sender" has been added for people who want
4591 the modified behaviour.
4597 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
4600 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
4601 indeed breaks things for older releases.
4603 3. Added additional logging to the case where there is a problem reading data
4604 from a filter that is running in a subprocess using a pipe, in order to
4605 try to track down a specific problem.
4607 4. Testing facility fudge: when running in the test harness and attempting
4608 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
4609 getting "No route to host". Convert this to a timeout.
4611 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
4614 6. Some OS don't have socklen_t but use size_t instead. This affects the
4615 fifth argument of getsockopt() amongst other things. This is now
4616 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
4617 can be set for individual OS. I have set it for SunOS5, OSF1, and
4618 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
4619 some earlier ones do not.
4621 7. Change 4.30/15 was not doing the test caselessly.
4623 8. The standard form for an IPv6 address literal was being rejected by address
4624 parsing in, for example, MAIL and RCPT commands. An example of this kind of
4625 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4626 this, as well as the form without the "IPv6" on the front (but only when
4627 address literals are enabled, of course).
4629 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
4631 10. Exim crashed if a message with an empty sender address specified by -f
4632 encountered a router with an errors_to setting. This could be provoked only
4633 by a command such as
4637 where an empty string was supplied; "<>" did not hit this bug.
4639 11. Installed PCRE release 4.5.
4641 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
4642 remained set. It is now erased.
4644 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
4645 times from message ids (which are base 36 rather than the normal 62).
4647 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
4648 were being counted as actual protocol errors, and logged if the log
4649 selector +smtp_protocol_error was set. One cannot be perfect in this test,
4650 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
4651 and DATA following a set of rejected RCPTs do not count as protocol errors.
4652 In other words, Exim assumes they were pipelined, though this may not
4653 actually be the case. Of course, in all cases the client gets an
4654 appropriate error code.
4656 15. If a lookup fails in an ACL condition, a message about the failure may
4657 be available; it is used if testing the ACL cannot continue, because most
4658 such messages specify what the cause of the deferral is. However, some
4659 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
4660 that caused an old message to be retained and used if a later statement
4661 caused a defer, replacing the real cause of the deferral.
4663 16. If an IP address had so many PTR records that the DNS lookup buffer
4664 was not large enough to hold them, Exim could crash while trying to process
4665 the truncated data. It now detects and logs this case.
4667 17. Further to 4.21/58, another change has been made: if (and only if) the
4668 first line of a message (the first header line) ends with CRLF, a bare LF
4669 in a subsequent header line has a space inserted after it, so as not to
4670 terminate the header.
4672 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
4673 unnecessarily, used atoi() instead of strtol(), and didn't check the
4674 termination when getting file sizes from file names by regex.
4676 19. Completely re-implemented the support for maildirsize files, in the light
4677 of a number of problems with the previous contributed implementation
4678 (4.30/29). In particular:
4680 . If the quota is zero, the maildirsize file is maintained, but no quota is
4683 . If the maildir directory does not exist, it is created before any attempt
4684 to write a maildirsize file.
4686 . The quota value in the file is just a cache; if the quota is changed in
4687 the transport, the new value overrides.
4689 . A regular expression is available for excluding directories from the
4692 20. The autoreply transport checks the characters in options that define the
4693 message's headers; it allows continued headers, but it was checking with
4694 isspace() after an embedded newline instead of explicitly looking for a
4697 21. If all the "regular" hosts to which an address was routed had passed their
4698 expiry times, and had not reached their retry times, the address was
4699 bounced, even if fallback hosts were defined. Now Exim should go on to try
4702 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
4703 equivalent code in the SMTP transport. Some hosts send humungous responses
4704 to HELO/EHLO, more than 1024 it seems.
4706 23. Refactoring: code in filter.c used (void *) for "any old type" but this
4707 gives compiler warnings in some environments. I've now done it "properly",
4710 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
4711 (because of problems with the built-in one) was declared to return uschar *
4712 instead of char *, causing compiler failure.
4714 25. Fixed a file descriptor leak when processing alias/forward files.
4716 26. Fixed a minor format string issue in dbfn.c.
4718 27. Typo in exim.c: ("dmbnz" for "dbmnz").
4720 28. If a filter file refered to $h_xxx or $message_headers, and the headers
4721 contained RFC 2047 "words", Exim's memory could, under certain conditions,
4724 29. When a sender address is verified, it is cached, to save repeating the test
4725 when there is more than one recipient in a message. However, when the
4726 verification involves a callout, it is possible for different callout
4727 options to be set for different recipients. It is too complicated to keep
4728 track of this in the cache, so now Exim always runs a verification when a
4729 callout is required, relying on the callout cache for the optimization.
4730 The overhead is duplication of the address routing, but this should not be
4733 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
4734 to be verified with callout=postmaster, and the main callout worked but the
4735 postmaster check failed, the verification correctly failed. However, if a
4736 subsequent RCPT command asked for sender verification *without* the
4737 postmaster check, incorrect caching caused this verification also to fail,
4740 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
4741 it was not caching the DNS options (qualify_single, search_parents) that
4742 were used when the lookup failed. A subsequent lookup with different
4743 options therefore always gave the same answer, though there were cases
4744 where it should not have. (Example: a "domains = !$mx_any" option on a
4745 dnslookup router: the "domains" option is always processed without any
4746 widening, but the router might have qualify_single set.) Now Exim uses the
4747 cached value only when the same options are set.
4749 32. Added John Jetmore's "exipick" utility to the distribution.
4751 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
4752 than a timeout (e.g. a certificate is required, and is not provided), an
4753 Exim server now closes the connection immediately. Previously it waited for
4754 the client to close - but if the client is SSL, it seems that they each
4755 wait for each other, leading to a delay before one of them times out.
4757 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
4758 maintained 0.8.x compatibility because I don't think many are using it, and
4759 it is clearly obsolete.
4761 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
4764 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
4765 client certificate was expired. A simple patch fixes this, though I don't
4766 understand the full logic of why the verify callback is called multiple
4769 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
4770 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
4771 which causes problems with some clients (such as the Certicom SSL Plus
4772 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
4773 disables the coutermeasure allowing Eudora to connect."
4775 38. Exim was not checking that a write() to a log file succeeded. This could
4776 lead to Bad Things if a log got too big, in particular if it hit a file
4777 size limit. Exim now panics and dies if it cannot write to a log file, just
4778 as it does if it cannot open a log file.
4780 39. Modified OS/Makefile-Linux so that it now contains
4782 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
4784 The two -D definitions ensure that Exim is compiled with large file
4785 support, which makes it possible to handle log files that are bigger than
4788 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
4789 instance) a domain was checked against a named list that involved a lookup,
4790 causing $domain_data to be set, then another domain was checked against the
4791 same list, then the first domain was re-checked, the value of $domain_data
4792 after the final check could be wrong. In particular, if the second check
4793 failed, it could be set empty. This bug probably also applied to
4796 41. The strip_trailing_dot option was not being applied to the address given
4797 with the -f command-line option.
4799 42. The code for reading a message's header from the spool was incrementing
4800 $received_count, but never initializing it. This meant that the value was
4801 incorrect (doubled) while delivering a message in the same process in which
4802 it was received. In the most common configuration of Exim, this never
4803 happens - a fresh exec is done - but it can happen when
4804 deliver_drop_privilege is set.
4806 43. When Exim logs an SMTP synchronization error - client data sent too soon -
4807 it now includes up to 150 characters of the unexpected data in the log
4810 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
4811 and building data strings. The size of both of these buffers was 10 000
4812 bytes - far larger than anybody would *ever* want, thought I. Needless to
4813 say, somebody hit the limit. I have increased the maximum line length to
4814 20 000 and the maximum data length of concatenated lines to 100 000. I have
4815 also fixed two bugs, because there was no checking on these buffers. Tsk,
4816 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
4817 buffer is too small.
4819 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
4820 lsearch lookups. Now it does.
4822 46. When parsing a route_list item in a manualroute router, a fixed-length
4823 buffer was used for the list of hosts. I made this 1024 bytes long,
4824 thinking that nobody would ever have a list of hosts that long. Wrong.
4825 Somebody had a whole pile of complicated expansion conditions, and the
4826 string was silently truncated, leading to an expansion error. It turns out
4827 that it is easier to change to an unlimited length (owing to other changes
4828 that have happened since this code was originally written) than to build
4829 structure for giving a limitation error. The length of the item that
4830 expands into the list of hosts is now unlimited.
4832 47. The lsearch lookup could not handle data where the length of text line was
4833 more than 4095 characters. Such lines were truncated, leading to shortened
4834 data being returned. It should now handle lines of any length.
4836 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
4837 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
4840 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
4841 replacing strings such as BIN_DIRECTORY in a source file: the replacement
4842 no longer happens in comment lines. A list of replacements is now placed
4843 at the head of all of the source files, except those whose only change is
4844 to replace PERL_COMMAND in the very first #! line.
4846 50. Replaced the slow insertion sort in queue.c, for sorting the list of
4847 messages on the queue, with a bottom-up merge sort, using code contributed
4848 by Michael Haardt. This should make operations like -bp somewhat faster on
4849 large queues. It won't affect queue runners, except when queue_run_in_order
4852 51. Installed eximstats 1.31 in the distribution.
4854 52. Added support for SRV lookups to the dnslookup router.
4856 53. If an ACL referred to $message_body or $message_body_end, the value was not
4857 reset for any messages that followed in the same SMTP session.
4859 54. The store-handling optimization for building very long strings was not
4860 differentiating between the different store pools. I don't think this
4861 actually made any difference in practice, but I've tidied it.
4863 55. While running the routers to verify a sender address, $sender_address
4864 was still set to the sender address. This is wrong, because when routing to
4865 send a bounce to the sender, it would be empty. Therefore, I have changed
4866 it so that, while verifying a sender address, $sender_address is set to <>.
4867 (There is no change to what happens when verifying a recipient address.)
4869 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
4870 target A or AAAA records (if not already returned) without resetting the
4871 qualify_single or search_parents options of the DNS resolver. These are
4872 inappropriate in this case because the targets of MX and SRV records must
4873 be FQDNs. A broken DNS record could cause trouble if it happened to have a
4874 target that, when qualified, matched something in the local domain. These
4875 two options are now turned off when doing these lookups.
4877 57. It seems that at least some releases of Reiserfs (which does not have the
4878 concept of a fixed number of inodes) returns zero and not -1 for the
4879 number of available inodes. This interacted badly with check_spool_inodes,
4880 which assumed that -1 was the "no such thing" setting. What I have done is
4881 to check that the total number of inodes is greater than zero before doing
4882 the test of how many are available.
4884 58. When a "warn" ACL statement has a log_message modifier, the message is
4885 remembered, and not repeated. This is to avoid a lot of repetition when a
4886 message has many recipients that cause the same warning to be written.
4887 Howewer, Exim was preserving the list of already written lines for an
4888 entire SMTP session, which doesn't seem right. The memory is now reset if a
4889 new message is started.
4891 59. The "rewrite" debugging flag was not showing the result of rewriting in the
4892 debugging output unless log_rewrite was also set.
4894 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
4895 of (int)(handle) when we know that handle contains (void *)(-1).
4897 61. The Exim daemon panic-logs an error return when it closes the incoming
4898 connection. However "connection reset by peer" seems to be common, and
4899 isn't really an error worthy of noting specially, so that particular error
4902 62. When Exim is trying to find all the local interfaces, it used to panic and
4903 die if the ioctl to get the interface flags failed. However, it seems that
4904 on at least one OS (Solaris 9) it is possible to have an interface that is
4905 included in the list of interfaces, but for which you get a failure error
4906 for this call. This happens when the interface is not "plumbed" into a
4907 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
4908 failure of the "get flags" call assumes that the interface is down.
4910 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
4911 makes life easier for people who are doing arithmetic on fields extracted
4912 from dates, where you often get leading zeros that should not be
4913 interpreted as octal.
4915 64. Added qualify_domain to the redirect router, to override the global
4918 65. If a pathologically long header line contained very many addresses (the
4919 report of this problem mentioned 10 000) and each of them was rewritten,
4920 Exim could use up a very large amount of memory. (It kept on making new
4921 copies of the header line as it rewrote, and never released the old ones.)
4922 At the expense of a bit more processing, the header rewriting function has
4923 been changed so that it no longer eats memory in this way.
4925 66. The generation of the Received: header has been moved from the time that a
4926 message starts to be received, to the time that it finishes. The timestamp
4927 in the Received: header should now be very close to that of the <= log
4928 line. There are two side-effects of this change:
4930 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
4931 logged header lines no longer include the local Received: line, because
4932 it has not yet been created. The same applies to a copy of the message
4933 that is returned to a non-SMTP sender when a message is rejected.
4935 (b) When a filter file is tested using -bf, no additional Received: header
4936 is added to the test message. After some thought, I decided that this
4939 This change does not affect the value of $received_for. It is still set
4940 after address rewriting, but before local_scan() is called.
4942 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
4944 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
4945 gave an unhelpful panic error message, and a defer error. I have managed to
4946 change this behaviour so that it now rejects any supplied certificate,
4947 which seems right, as the list of acceptable certificates is empty.
4949 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
4950 gave an unhelpful defer error. I have not managed to make this reject any
4951 supplied certificates, but the error message it gives is "no certificate
4952 supplied", which is not helpful.
4954 70. exigrep's output now also includes lines that are not associated with any
4955 message, but which match the given pattern. Implemented by a patch from
4956 Martin Sluka, which also tidied up the Perl a bit.
4958 71. Recipient callout verification, like sender verification, was using <> in
4959 the MAIL FROM command. This isn't really the right thing, since the actual
4960 sender may affect whether the remote host accepts the recipient or not. I
4961 have changed it to use the actual sender in the callout; this means that
4962 the cache record is now keyed on a recipient/sender pair, not just the
4963 recipient address. There doesn't seem to be a real danger of callout loops,
4964 since a callout by the remote host to check the sender would use <>.
4965 [SEE ABOVE: changed after hitting problems.]
4967 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
4968 temporary errors. However, in the case of such a code being given after
4969 the end of a data transmission (i.e. after ".") Exim was failing to write
4970 a retry record for the message. (Yes, there was some broken host that was
4971 actually sending 8xx at this point.)
4973 73. An unknown lookup type in a host list could cause Exim to panic-die when
4974 the list was checked. (An example that provoked this was putting <; in the
4975 middle of a list instead of at the start.) If this happened during a DATA
4976 ACL check, a -D file could be left lying around. This kind of configuration
4977 error no longer causes Exim to die; instead it causes a defer errror. The
4978 incident is still logged to the main and panic logs.
4980 74. Buglet left over from Exim 3 conversion. The message "too many messages
4981 in one connection" was written to the rejectlog but not the mainlog, except
4982 when address rewriting (yes!) was being logged.
4984 75. Added write_rejectlog option.
4986 76. When a system filter was run not as root (that is, when system_filter_user
4987 was set), the values of the $n variables were not being returned to the
4988 main process; thus, they were not subsequently available in the $sn
4991 77. Added +return_path_on_delivery log selector.
4993 78. A connection timeout was being treated differently from recipients deferred
4994 when testing hosts_max_try with a message that was older than the host's
4995 retry timeout. (The host should not be counted, thus allowing all hosts to
4996 be tried at least once before bouncing.) This may have been the cause of an
4997 occasionally reported bug whereby a message would remain on the queue
4998 longer than the retry timeout, but would be bounced if a delivery was
4999 forced. I say "may" because I never totally pinned down the problem;
5000 setting up timeout/retry tests is difficult. See also the next item.
5002 79. The ultimate address timeout was not being applied to errors that involved
5003 a combination of host plus message (for example, a timeout on a MAIL
5004 command). When an address resolved to a number of possible hosts, and they
5005 were not all tried for each delivery (e.g. because of hosts_max_try), a
5006 message could remain on the queue longer than the retry timeout.
5008 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
5011 81. Fixed an obscure SMTP outgoing bug which required at least the following
5012 conditions: (a) there was another message waiting for the same server;
5013 (b) the server returned 5xx to all RCPT commands in the first message so
5014 that the message was not completed; (c) the server dropped the connection
5015 or gave a negative response to the RSET that Exim sends to abort the
5016 transaction. The observed case was a dropped connection after DATA that had
5017 been sent in pipelining mode. That is, the server had advertised PIPELINING
5018 but was not implementing it correctly. The effect of the bug was incorrect
5019 behaviour, such as trying another host, and this could lead to a crash.
5025 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
5026 and daemon.c were passed as pointers to ints; they should have been
5027 pointers to socklen_t variables (which are typically unsigned ints).
5029 2. Some signed/unsigned type warnings in the os.c file for Linux have been
5032 3. Fixed a really odd bug that affected only the testing scheme; patching a
5033 certain fixed string in the binary changed the value of another string that
5034 happened to be identical to the end of the original first string.
5036 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
5037 name", it returns that address as the IP address. On some operating
5038 systems (e.g. Solaris), it also passes back the IP address string as the
5039 "host name". However, on others (e.g. Linux), it passes back an empty
5040 string. Exim wasn't checking for this, and was changing the host name to an
5041 empty string, assuming it had been canonicized.
5043 5. Although rare, it is permitted to have more than one PTR record for a given
5044 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
5045 all the names associated with an address, because they do in Solaris.
5046 However, it seems that they do not in Linux for data that comes from the
5047 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
5048 I found this out when I moved to a new Linux workstation and tried to run
5049 the Exim test suite.
5051 To get round this problem I have changed the code so that it now does its
5052 own call to the DNS to look up PTR records when searching for a host name.
5053 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
5054 addresses that are only in /etc/hosts are still found.
5056 This behaviour is, however, controlled by an option called host_lookup_
5057 order, which defaults to "bydns:byaddr". If people want to use the other
5058 order, or indeed, just use one or the other means of lookup, they can
5059 specify it in this variable.
5061 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
5062 some operating systems, this comes back from gethostbyaddr() as an empty
5063 string, and this is what Exim used to test for. However, it seems that in
5064 other systems, "." is yielded. Exim now tests for this case too.
5066 7. The values of check_spool_space and check_log_space are now held internally
5067 as a number of kilobytes instead of an absolute number of bytes. If a
5068 numbers is specified without 'K' or 'M', it is rounded up to the nearest
5069 kilobyte. This means that much larger values can be stored.
5071 8. Exim monitor: an attempt to get the action menu when not actually pointing
5072 at a message produces an empty menu entitled "No message selected". This
5073 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
5074 no entries in it ("Shell widget menu has zero width and/or height"). So I
5075 have added a single, blank menu entry in this case.
5077 9. Added ${quote_local_part.
5079 10. MIME decoding is now applied to the contents of Subject: header lines when
5082 11. Now that a reference to $sender_host_address automatically causes a reverse
5083 lookup to occur if necessary (4.13/18), there is no need to arrange for a
5084 host lookup before query-style lookups in lists that might use this
5085 variable. This has therefore been abolished, and the "net-" prefix is no
5086 longer necessary for query-style lookups.
5088 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
5089 have been a typo for LFLAGS, so it has been changed.
5091 13. The install script calls Exim with "-C /dev/null" in order to find the
5092 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
5093 to be output. Howeve, since Exim outputs its version number before the
5094 error, it didn't break the script. It just looked ugly. I fixed this by
5095 always allowing "-C /dev/null" if the caller is root.
5097 14. Ignore overlarge ACL variable number when reading spool file - insurance
5098 against a later release with more variables having written the file.
5100 15. The standard form for an IPv6 address literal was being rejected by EHLO.
5101 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5102 this, as well as the form without the "IPv6" on the front.
5104 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
5105 OS/Makefile-Darwin file.
5107 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
5108 only to LDAP libraries that do not have LDAP_OPT_DEREF.
5110 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
5111 variable. However, some OS use ints for inodes. I've added cast to long int
5112 to get rid of the compiler warning.
5114 19. I had forgotten to lock out "/../" in configuration file names when
5115 ALT_CONFIG_PREFIX was set.
5117 20. Routers used for verification do not need to specify transports. However,
5118 if such a router generated a host list, and callout was configured, Exim
5119 crashed, because it could not find a port number from the (non-existent)
5120 transport. It now assumes port 25 in this circumstance.
5122 21. Added the -t option to exigrep.
5124 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
5125 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
5126 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
5127 them is set, LOOKUP_LSEARCH is forced.
5129 23. "exim -bV" now outputs a list of lookups that are included in the binary.
5131 24. Added sender and host information to the "rejected by local_scan()" log
5132 line; previously there was no indication of these.
5134 25. Added .include_if_exists.
5136 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
5137 Linux. It turns out that not all file systems support this. Apparently some
5138 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
5139 do it.) To cope with this, the error EINVAL, which means that sync-ing is
5140 not supported on the file descriptor, is now ignored when Exim is trying to
5141 sync a directory. This applies only to Linux.
5143 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
5145 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
5146 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
5149 29. Added support for maildirsize files from supplied patch (modified a bit).
5151 30. The use of :fail: followed by an empty string could lead Exim to respond to
5152 sender verification failures with (e.g.):
5154 550 Verification failed for <xxx>
5155 550 Sender verify failed
5157 where the first response line was missing the '-' that indicates it is not
5158 the final line of the response.
5160 31. The loop for finding the name of the user that called Exim had a hardwired
5161 limit of 10; it now uses the value of finduser_retries, which is used for
5162 all other user lookups.
5164 32. Added $received_count variable, available in data and not_smtp ACLs, and at
5167 33. Exim was neglecting to zero errno before one call of strtol() when
5168 expanding a string and expecting an integer value. On some systems this
5169 resulted in spurious "integer overflow" errors. Also, it was casting the
5170 result into an int without checking.
5172 34. Testing for a connection timeout using "timeout_connect" in the retry rules
5173 did not work. The code looks as if it has *never* worked, though it appears
5174 to have been documented since at least releast 1.62. I have made it work.
5176 35. The "timeout_DNS" error in retry rules, also documented since at least
5177 1.62, also never worked. As it isn't clear exactly what this means, and
5178 clearly it isn't a major issue, I have abolished the feature by treating it
5179 as "timeout", and writing a warning to the main and panic logs.
5181 36. The display of retry rules for -brt wasn't always showing the error code
5184 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
5185 timeout_connect_A, timeout_connect_MX.
5187 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
5188 to the empty sender.
5190 39. The daemon was not analysing the content of -oX till after it had closed
5191 stderr and disconnected from the controlling terminal. This meant that any
5192 syntax errors were only noted on the panic log, and the return code from
5193 the command was 0. By re-arranging the code a little, I've made the
5194 decoding happen first, so such errors now appear on stderr, and the return
5195 code is 1. However, the actual setting up of the sockets still happens in
5196 the disconnected process, so errors there are still only recorded on the
5199 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
5200 connections (as happens on some IP stacks) was logged at start up time as
5201 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
5202 it from "IPv6 and IPv4", which means that two separate sockets are being
5205 41. The debug output for gethostbyname2() or getipnodebyname() failures now
5206 says whether AF_INET or AF_INET6 was passed as an argument.
5208 42. Exiwhat output was messed up when time zones were included in log
5211 43. Exiwhat now gives more information about the daemon's listening ports,
5212 and whether -tls-on-connect was used.
5214 44. The "port" option of the smtp transport is now expanded.
5216 45. A "message" modifier in a "warn" statement in a non-message ACL was being
5217 silently ignored. Now an error message is written to the main and panic
5220 46. There's a new ACL modifier called "logwrite" which writes to a log file
5221 as soon as it is encountered.
5223 47. Added $local_user_uid and $local_user_gid at routing time.
5225 48. Exim crashed when trying to verify a sender address that was being
5228 49. Exim was recognizing only a space character after ".include". It now also
5229 recognizes a tab character.
5231 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
5232 extracting the relevant information from the specification. The man page no
5233 longer contains scrambled data for the -d option, and I've added a section
5234 at the front about calling Exim under different names.
5236 51. Added "extra_headers" argument to the "mail" command in filter files.
5238 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
5241 53. Installed eximstats 1.29.
5243 54. Added transport_filter_timeout as a generic transport option.
5245 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
5246 Cc: header lines. This was required by RFC 822, but it not required by RFC
5249 56. Exim used to add From:, Date:, and Message-Id: header lines to any
5250 incoming messages that did not have them. Now it does so only if the
5251 message originates locally, that is, if there is no associated remote host
5252 address. When Resent- header lines are present, this applies to the Resent-
5253 lines rather than the non-Resent- lines.
5255 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
5256 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
5258 58. Messages for configuration errors now include the name of the main
5259 configuration file - useful now that there may be more than one file in a
5260 list (.included file names were always shown).
5262 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
5263 for those rare installations that do not start the daemon as root or run it
5264 setuid root. I've cut out the call to initgroups() if the daemon is not
5267 60. The Exim user and group can now be bound into the binary as text strings
5268 that are looked up at the start of Exim's processing.
5270 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
5272 62. Added $mailstore_basename variable.
5274 63. Installed patch to sieve.c from Michael Haardt.
5276 64. When Exim failed to open the panic log after failing to open the main log,
5277 the original message it was trying to log was written to stderr and debug
5278 output, but if they were not available (the usual case in production), it
5279 was lost. Now it is written to syslog before the two lines that record the
5280 failures to open the logs.
5282 65. Users' Exim filters run in subprocesses under the user's uid. It is
5283 possible for a "deliver" command or an alias in a "personal" command to
5284 provoke an address rewrite. If logging of address rewriting is configured,
5285 this fails because the process is not running as root or exim. There may be
5286 a better way of dealing with this, but for the moment (because 4.30 needs
5287 to be released), I have disabled address rewrite logging when running a
5288 filter in a non-root, non-exim process.
5294 1. The buildconfig auxiliary program wasn't quoting the value set for
5295 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5296 not defined. This bug was masked in 4.22 by the effect that was fixed in
5299 2. Some messages that were rejected after a message id was allocated were
5300 shown as "incomplete" by exigrep. It no longer does this for messages that
5301 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5303 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5304 have allow_domain_literals set, the ID did not get logged in the <= line.
5305 Domain literals are now always recognized in Message-ID: header lines.
5307 4. The first argument for a ${extract expansion item is the key name or field
5308 number. Leading and trailing spaces in this item were not being ignored,
5309 causing some misleading effects.
5311 5. When deliver_drop_privilege was set, single queue runner processes started
5312 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5313 same command in the process it spins off) were not dropping privilege.
5315 6. When the daemon running as "exim" started a queue runner, it always
5316 re-executed Exim in the spun-off process. This is a waste of effort when
5317 deliver_drop_privilege is set. The new process now just calls the
5318 queue-runner function directly.
5324 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5327 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5328 ignored. Though the use of -oP was forcing the writing of a pid file, it
5329 was always written to the default place.
5331 3. If the message "no IP address found for host xxxx" is generated during
5332 incoming verification, it is now followed by identification of the incoming
5333 connection (so you can more easily find what provoked it).
5335 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5337 5. Added some features to "harden" Exim a bit more against certain attacks:
5339 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5340 be put in Local/Makefile. This is like the never_users runtime option,
5341 but it cannot be overridden. The default setting is "root".
5343 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5344 prefix string with which any file named in a -C command line option
5347 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5348 is retained for -C and -D only if the caller of Exim is root. Without
5349 it, the exim user may also use -C and -D and retain privilege.
5351 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5352 command line option is disabled.
5354 6. Macro names set by the -D option must start with an upper case letter, just
5355 like macro names defined in the configuration file.
5357 7. Added "dereference=" facility to LDAP.
5359 8. Two instances of the typo "uknown" in the source files are fixed.
5361 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5362 the Configure-Makefile script screwed up while processing it.
5364 10. Incorporated PCRE 4.4.
5366 11. The SMTP synchronization check was not operating right at the start of an
5367 SMTP session. For example, it could not catch a HELO sent before the client
5368 waited for the greeting. There is now a check for outstanding input at the
5369 point when the greeting is written. Because of the duplex, asynchronous
5370 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5371 way, but not yet received, when the check is performed.
5373 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5374 on TCP/IP sockets, because this apparently causes some broken clients to
5377 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5378 unchanged) from the Cygwin maintainer.
5380 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5381 was supported instead of testing for mbx. Effectively a typo.
5383 15. The spa authenticator server code was not checking that the input it
5384 received was valid base64.
5386 16. The debug output line for the "set" modifier in ACLs was not showing the
5387 name of the variable that was being set.
5389 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5391 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5392 lookup on its own. Something else was needed to trigger the lookup. For
5393 example, a match in host_lookup or the need for a host name in a host list.
5394 Now, if $sender_host_name is referenced and the host name has not yet been
5395 looked up, a lookup is performed. If the lookup fails, the variable remains
5396 empty, and $host_lookup_failed is set to "1".
5398 19. Added "eqi" as a case-independent comparison operator.
5400 20. The saslauthd authentication condition could segfault if neither service
5401 nor realm was specified.
5403 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5404 error message that was logged was misleading, and incoming SMTP
5405 connections were dropped. The message is now more accurate, and temporary
5406 errors are given to SMTP connections.
5408 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5409 (except RSET) with a 421 error, until QUIT is received. However, it was
5410 failing to send a response to QUIT.
5412 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5413 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5414 ACL is now run after the helo_try_verify_hosts code.
5416 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5417 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5418 case-independent, so other case variants are also recognized). Apparently
5419 some systems use these upper case variants.
5421 25. If more than two messages were waiting for the same host, and a transport
5422 filter was specified for the transport, Exim sent two messages over the
5423 same TCP/IP connection, and then failed with "socket operation on non-
5424 socket" when it tried to send the third.
5426 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5428 27. The extern definition of crypt16() in expand.c was not being excluded when
5429 the OS had its own crypt16() function.
5431 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5432 as a preferred synonym for return_size_limit, both as an option and as an
5435 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5437 30. Changed the default configuration ACL to relax the local part checking rule
5438 for addresses that are not in any local domains. For these addresses,
5439 slashes and pipe symbols are allowed within local parts, but the sequence
5440 /../ is explicitly forbidden.
5442 31. SPA server authentication was not clearing the challenge buffer before
5445 32. log_message in a "warn" ACL statement was writing to the reject log as
5446 well as to the main log, which contradicts the documentation and doesn't
5447 seem right (because no rejection is happening). So I have stopped it.
5449 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
5450 However, I am unable to do any testing of this.
5452 34. Fixed an infelicity in the appendfile transport. When checking directories
5453 for a mailbox, to see if any needed to be created, it was accidentally
5454 using path names with one or more superfluous leading slashes; tracing
5455 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
5457 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
5458 contents are added to the log line that is written for every discarded
5459 recipient. (Previously a log_message setting was ignored.)
5461 36. The ${quote: operator now quotes the string if it is empty.
5463 37. The install script runs exim in order to find its version number. If for
5464 some reason other than non-existence or emptiness, which it checks, it
5465 could not run './exim', it was installing it with an empty version number,
5466 i.e. as "exim-". This error state is now caught, and the installation is
5469 38. An argument was missing from the function that creates an error message
5470 when Exim fails to connect to the socket for saslauthd authentication.
5471 This could cause Exim to crash, or give a corrupted message.
5473 39. Added isip, isip4, and isip6 to ${if conditions.
5475 40. The ACL variables $acl_xx are now saved with the message, and can be
5476 accessed later in routers, transports, and filters.
5478 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
5479 strings in the file are not string-expanded.
5481 42. If a MAIL command specified a SIZE value that was too large to fit into an
5482 int variable, the check against message_size_limit failed. Such values are
5483 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
5484 day this will have to be increased, but I don't think I want to be around
5485 when emails are that large.
5492 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
5493 iconv() is not standard in FreeBSD.
5495 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
5496 IPv6 enabled. The observed symptom was a segmentation fault on return from
5497 the function os_common_find_running_interfaces() in src/os.c.
5499 3. In the check_special_case() function in daemon.c I had used "errno" as an
5500 argument name, which causes warnings on some systems. This was basically a
5501 typo, since it was named "eno" in the comments!
5503 4. The code that waits for the clock to tick (at a resolution of some fraction
5504 of a second) so as to ensure message-id uniqueness was always waiting for
5505 at least one whole tick, when it could have waited for less. [This is
5506 almost certainly not relevant at current processor speeds, where it is
5507 unlikely to ever wait at all. But we try to future-proof.]
5509 5. The function that sleeps for a time interval that includes fractions of a
5510 second contained a race. It did not block SIGALRM between setting the
5511 timer, and suspending (a couple of lines later). If the interval was short
5512 and the sigsuspend() was delayed until after it had expired, the suspension
5513 never ended. On busy systems this could lead to processes getting stuck for
5516 6. Some uncommon configurations may cause a lookup to happen in a queue runner
5517 process, before it forks any delivery processes. The open lookup caching
5518 mechanism meant that the open file or database connection was passed into
5519 the delivery process. The problem was that delivery processes always tidy
5520 up cached lookup data. This could cause a problem for the next delivery
5521 process started by the queue runner, because the external queue runner
5522 process does not know about the closure. So the next delivery process
5523 still has data in the lookup cache. In the case of a file lookup, there was
5524 no problem because closing a file descriptor in a subprocess doesn't affect
5525 the parent. However, if the lookup was caching a connection to a database,
5526 the connection was closed, and the second delivery process was likely to
5527 see errors such as "PGSQL: query failed: server closed the connection
5528 unexpectedly". The problem has been fixed by closing all cached lookups
5529 in a queue runner before running a delivery process.
5531 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
5532 seem to have the "const" qualifier which it has on other OS. I've
5535 8. Change 4.21/2 was too strict. It is only if there are two authenticators
5536 *of the same type* (client or server) with the same public name that an
5537 error should be diagnosed.
5539 9. When Exim looked up a host name for an IP address, but failed to find the
5540 original IP address when looking up the host name (a safety check), it
5541 output the message "<ip address> does not match any IP for NULL", which was
5542 confusing, to say the least. The bug was that the host name should have
5543 appeared instead of "NULL".
5545 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
5546 user that is built into the binary, and the -C or -D options is used, root
5547 privilege is dropped before the configuration file is read. In addition,
5548 logging is switched to stderr instead of the normal log files. If the
5549 configuration then re-defines the Exim user, the unprivileged environment
5550 is probably not what is expected, so Exim logs a panic warning message (but
5553 However, if deliver_drop_privilege is set, the unprivileged state may well
5554 be exactly what is intended, so the warning has been cut out in that case,
5555 and Exim is allowed to try to write to its normal log files.
5561 1. smtp_return_error_details was not giving details for temporary sender
5562 or receiver verification errors.
5564 2. Diagnose a configuration error if two authenticators have the same public
5567 3. Exim used not to create the message log file for a message until the first
5568 delivery attempt. This could be confusing when incoming messages were held
5569 for policy or load reasons. The message log file is now created at the time
5570 the message is received, and an initial "Received" line is written to it.
5572 4. The automatically generated man page for command line options had a minor
5573 bug that caused no ill effects; however, a more serious problem was that
5574 the procedure for building the man page automatically didn't always
5575 operate. Consequently, release 4.20 contains an out-of-date version. This
5576 shouldn't happen again.
5578 5. When building Exim with embedded Perl support, the script that builds the
5579 Makefile was calling 'perl' to find its compile-time parameters, ignoring
5580 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
5582 6. The freeze_tell option was not being used for messages that were frozen on
5583 arrival, either by an ACL or by local_scan().
5585 7. Added the smtp_incomplete_transaction log selector.
5587 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
5588 was accepting AUTH without a new EHLO.
5590 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
5591 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
5594 10. Logging of TCP/IP connections (when configured) now happens in the main
5595 daemon process instead of the child process, so that the TCP/IP connection
5596 count is more accurate (but it can never be perfect).
5598 11. The use of "drop" in a nested ACL was not being handled correctly in the
5599 outer ACL. Now, if condition failure induced by the nested "drop" causes
5600 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
5601 or "require"), the connection is dropped.
5603 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
5604 that yield "discard" can now be used with an "accept" or a "discard" verb,
5605 but an error is generated for any others (because I can't see a useful way
5606 to define what should happen).
5608 13. When an ACL is read dynamically from a file (or anywhere else), the lines
5609 are now processed in the same way as lines in the Exim configuration file.
5610 In particular, continuation lines are supported.
5612 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
5614 15. Added -ti meaning -t -i.
5616 16. Check for letters, digits, hyphens, and dots in the names of dnslist
5617 domains, and warn by logging if others are found.
5619 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
5620 returned from GIFCONF when Exim is trying to find the list of interfaces on
5621 a host. The code in os.c has been modified to copy each ifreq to an aligned
5622 structure in all cases.
5624 Also, in some cases, the returned ifreq's were being copied to a 'struct
5625 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
5626 means the last couple of bytes of an IPv6 address could be chopped if the
5627 ifreq contained only a normal sockaddr (14 bytes storage).
5629 18. Named domain lists were not supported in the hosts_treat_as_local option.
5630 An entry such as +xxxx was not recognized, and was treated as a literal
5633 19. Ensure that header lines added by a DATA ACL are included in the reject log
5634 if the ACL subsequently rejects the message.
5636 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
5637 MD5 (which is deprecated).
5639 21. When testing a filter file using -bf, Exim was writing a message when it
5640 took the sender from a "From " line in the message, but it was not doing so
5641 when it took $return_path from a Return-Path: header line. It now does.
5643 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
5644 with a valid header line field name (a series of printing characters
5645 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
5647 23. Changed "disc" in the source to "disk" to conform to the documentation and
5648 the book and for uniformity.
5650 24. Ignore Sendmail's -Ooption=value command line item.
5652 25. When execve() failed while trying to run a command in a pipe transport,
5653 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
5654 could be confused with a return value of 69 from the command itself. This
5655 has been changed to 127, the value the shell returns if it is asked to run
5656 a non-existent command. The wording for the related log line suggests a
5657 non-existent command as the problem.
5659 26. If received_header_text expands to an empty string, do not add a Received:
5660 header line to the message. (Well, it adds a token one on the spool, but
5661 marks it "old" so that it doesn't get used or transmitted.)
5663 27. Installed eximstats 1.28 (addition of -nt option).
5665 28. There was no check for failure on the call to getsockname() in the daemon
5666 code. This can fail if there is a shortage of resources on the system, with
5667 ENOMEM, for example. A temporary error is now given on failure.
5669 29. Contrary to the C standard, it seems that in some environments, the
5670 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
5671 program. Exim now does this explicitly; it affects the formatting of
5672 timestamps using strftime().
5674 30. If exiqsumm was given junk data, it threw up some uninitialized variable
5675 complaints. I've now initialized all the variables, to avoid this.
5677 32. Header lines added by a system filter were not being "seen" during
5678 transport-time rewrites.
5680 33. The info_callback() function passed to OpenSSL is set up with type void
5681 (*)(SSL *, int, int), as described somewhere. However, when calling the
5682 function (actually a macro) that sets it up, the type void(*)() is
5683 expected. I've put in a cast to prevent warnings from picky compilers.
5685 34. If a DNS black list lookup found a CNAME record, but there were no A
5686 records associated with the domain it pointed at, Exim crashed.
5688 35. If a DNS black list lookup returned more than one A record, Exim ignored
5689 all but the first. It now scans all returned addresses if a particular IP
5690 value is being sought. In this situation, the contents of the
5691 $dnslist_value variable are a list of all the addresses, separated by a
5694 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
5695 to accept a host name and all its aliases if the forward lookup for any of
5696 them yielded the IP address of the incoming connection. Now it accepts only
5697 those names whose forward lookup yields the correct IP address. Any other
5698 names are discarded. This closes a loophole whereby a rogue DNS
5699 administrator could create reverse DNS records to break through a
5700 wildcarded host restriction in an ACL.
5702 37. If a user filter or a system filter that ran in a subprocess used any of
5703 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
5704 the wrong values were passed to the pipe command ($thisaddress had the
5705 value of $0, $0 had the value of $1, etc). This bug was introduced by
5706 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
5708 38. Improved the line breaking for long SMTP error messages from ACLs.
5709 Previously, if there was no break point between 40 and 75 characters, Exim
5710 left the rest of the message alone. Two changes have been made: (a) I've
5711 reduced the minimum length to 35 characters; (b) if it can't find a break
5712 point between 35 and 75 characters, it looks ahead and uses the first one
5713 that it finds. This may give the occasional overlong line, but at least the
5714 remaining text gets split now.
5716 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
5717 file descriptors might be low, and that setting 1000 would always raise it.
5718 It turns out that in some environments, the limit is already over 1000 and
5719 that lowering it causes trouble. So now Exim takes care not to decrease it.
5721 40. When delivering a message, the value of $return_path is set to $sender_
5722 address at the start of routing (routers may change the value). By an
5723 oversight, this default was not being set up when an address was tested by
5724 -bt or -bv, which affected the outcome if any router or filter referred to
5727 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
5728 log only when "message" or "log_message" are set. However, if one of the
5729 conditions was an address verification, or a call to a nested ACL, the
5730 messages generated by the underlying test were being passed through. This
5731 no longer happens. The underlying message is available in $acl_verify_
5732 message for both "message" and "log_message" expansions, so it can be
5733 passed through if needed.
5735 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
5736 new expansion $bh_ to give the encoded byte string without charset
5737 translation. Translation happens only if iconv() is available; HAVE_ICONV
5738 indicates this at build time. HEADERS_CHARSET gives the charset to
5739 translate to; headers_charset can change it in the configuration, and
5740 "headers charset" can change it in an individual filter file.
5742 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
5743 that creates RFC 2047 encoded "words" labels them as that charset instead
5744 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
5745 expansion operator; (ii) when Exim creates a From: line for a local
5746 message; (iii) when a header line is rewritten to include a "phrase" part.
5748 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
5749 buggy, causing it to skip the first lines of messages whose message ID
5750 ended in 'D'. This would not have bitten before Exim release 4.14, because
5751 message IDs were unlikely to end in 'D' before then. The effect was to have
5752 incorrect size information for certain domains.
5754 45. #include "config.h" was missing at the start of the crypt16.c module. This
5755 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
5758 46. If there was a timeout during a "random" callout check, Exim treated it as
5759 a failure of the random address, and carried on sending RSET and the real
5760 address. If the delay was just some slowness somewhere, the response to the
5761 original RCPT would be taken as a response to RSET and so on, causing
5762 mayhem of various kinds.
5764 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
5765 when I implemented it. It didn't allow for the fact that some option values
5766 may legitimatetly be negative (e.g. size_addition), and it didn't even do
5767 the right test for positive values.
5769 48. Domain names in DNS records are case-independent. Exim always looks them up
5770 in lower case. Some resolvers return domain names in exactly the case they
5771 appear in the zone file, that is, they may contain uppercase letters. Not
5772 all resolvers do this - some return always lower case. Exim was treating a
5773 change of case by a resolver as a change of domain, similar to a widening
5774 of a domain abbreviation. This triggered its re-routing code and so it was
5775 trying to route what was effectively the same domain again. This normally
5776 caused routing to fail (because the router wouldn't handle the domain
5777 twice). Now Exim checks for this case specially, and just changes the
5778 casing of the domain that it ultimately uses when it transmits the message
5781 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
5784 50. If a filter generated a file delivery with a non-absolute name (possible if
5785 no home directory exists for the router), the forbid_file option was not
5788 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
5789 the existing equality matching.
5791 52. Exim was using ints instead of ino_t variables in some places where it was
5792 dealing with inode numbers.
5794 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
5795 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
5796 called TMPDIR, and if it finds it is different, it changes its value.
5798 54. The smtp_printf() function is now made available to local_scan() so
5799 additional output lines can be written before returning. There is also an
5800 smtp_fflush() function to enable the detection of a dropped connection.
5801 The variables smtp_input and smtp_batched_input are exported to
5804 55. Changed the default runtime configuration: the message "Unknown user"
5805 has been removed from the ACL, and instead placed on the localuser router,
5806 using the cannot_route_message feature. This means that any verification
5807 failures that generate their own messages won't get overridden. Similarly,
5808 the "Unrouteable address" message that was in the ACL for unverifiable
5809 relay addresses has also been removed.
5811 56. Added hosts_avoid_esmtp to the smtp transport.
5813 57. The exicyclog script was not checking for the esoteric option
5814 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
5815 will work only if exicyclog is run under the appropriate euid.
5817 58. Following a discussion on the list, the rules by which Exim recognises line
5818 endings on incoming messages have been changed. The -dropcr and drop_cr
5819 options are now no-ops, retained only for backwards compatibility. The
5820 following line terminators are recognized: LF CRLF CR. However, special
5821 processing applies to CR:
5823 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
5824 nor a local message in the state where . is a terminator.
5826 (ii) If a bare CR is encountered in a header line, an extra space is added
5827 after the line terminator so as not to end the header. The reasoning
5828 behind this is that bare CRs in header lines are most likely either
5829 to be mistakes, or people trying to play silly games.
5831 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
5832 was being incorrectly given as 18 bytes larger than it should have been.
5833 This is a VOB (very old bug).
5835 60. This may never have affected anything current, but just in case it has:
5836 When the local host is found other than at the start of a list of hosts,
5837 the local host, those with the same MX, and any that follow, are discarded.
5838 When the list in question was part of a longer list of hosts, the following
5839 hosts (not currently being processed) were also being discarded. This no
5840 longer happens. I'm not sure if this situation could ever has previously
5843 61. Added the "/MX" feature to lists of hosts in the manualroute and query
5846 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
5847 header. This is something that is recommended in a new Internet Draft, and
5848 is something that is documented as being done by Sendmail. There are two
5849 possible values. For messages generated by the autoreply transport, Exim
5852 Auto-Submitted: auto-replied
5854 whereas for all other generated messages (e.g. bounces) it adds
5856 Auto-Submitted: auto-generated
5858 63. The "personal" condition in filters now includes a test for the
5859 Auto-Submitted: header. If it contains the string "auto-" the message it
5860 not considered personal.
5862 64. Added rcpt_include_affixes as a generic transport option.
5864 65. Added queue_only_override (default true).
5866 66. Added the syslog_duplication option.
5868 67. If what should have been the first header line of a message consisted of
5869 a space followed by a colon, Exim was mis-interpreting it as a header line.
5870 It isn't of course - it is syntactically invalid and should therefore be
5871 treated as the start of the message body. The misbehaviour could have
5872 caused a number of strange effects, including loss of data in subsequent
5873 header lines, and spool format errors.
5875 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
5876 client host had authenticated. This control can now be exercised by an ACL
5877 for more flexibility.
5879 69. By default, callouts do not happen when testing with -bh. There is now a
5880 variant, -bhc, which does actually run the callout code, including
5881 consulting and updating the callout cache.
5883 70. Added support for saslauthd authentication, courtesy of Alexander
5886 71. If statvfs() failed on the spool or log directories while checking their
5887 size for availability, Exim confusingly gave the error "space shortage".
5888 Furthermore, in debugging mode it crashed with a floating point exception.
5889 These checks are done if check_{spool,log}_{space,inodes} are set, and when
5890 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
5891 serious problem, Exim now writes to the main and panic logs when this
5892 happens, with details of the failure. It then refuses to accept the
5893 incoming message, giving the message "spool directory problem" or "log
5894 directory problem" with a 421 code for SMTP messages.
5896 72. When Exim is about to re-exec itself, it ensures that the file descriptors
5897 0, 1, and 2 exist, because some OS complain for execs without them (see
5898 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
5899 descriptors. However, the code omitted to check that the open succeeded,
5900 causing mysterious errors if for some reason the permissions on /dev/null
5901 got screwed. Now Exim writes a message to the main and panic logs, and
5902 bombs out if it can't open /dev/null.
5904 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
5905 interact so that it is all more flexible. It is supposed to remain
5906 backwards compatible. Also added extra_local_interfaces.
5908 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
5909 to bomb out with an assertion failure - to the client this appears as a
5910 connection drop. This problem occurs in the part of the code that was taken
5911 from the Samba project. Fortunately, the assertion is in a very simple
5912 function, so I have fixed this by reproducing the function inline in the
5913 one place where it is called, and arranging for authentication to fail
5914 instead of killing the process with assert().
5916 75. The SPA client code was not working when the server requested OEM rather
5917 than Unicode encoding.
5919 76. Added code to make require_files with a specific uid setting more usable in
5920 the case where statting the file as root fails - usually a non-root-mounted
5921 NFS file system. When this happens and the failure is EACCES, Exim now
5922 forks a subprocess and does the per-uid checking as the relevant uid.
5924 77. Added process_log_path.
5926 78. If log_file_path was not explicitly set, a setting of check_log_space or
5927 check_log_inodes was ignored.
5929 79. If a space check for the spool or log partitions fails, the incident is now
5930 logged. Of course, in the latter case the data may get lost...
5932 80. Added the %p formatting code to string_format() so that it can be used to
5933 print addresses in debug_print(). Adjusted all the address printing in the
5934 debugging in store.c to use %p rather than %d.
5936 81. There was a concern that a line of code in smtp_in.c could overflow a
5937 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
5938 initially expressed, the concern was not well-founded, because trailing
5939 spaces are removed early. However, if the trailing spaces were followed by
5940 a NULL, they did not get removed, so the overflow was possible. Two fixes
5943 (a) I re-wrote the offending code in a cleaner fashion.
5944 (b) If an incoming SMTP command contains a NULL character, it is rejected
5947 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
5948 runs initgroups(), so that if the Exim user is in any additional groups,
5949 they will be used during message reception.
5955 The change log for 4.20 and earlier releases has been archived.
projects / exim.git / blob