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 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
38 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
40 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
41 characters in header names, implemented as a verify condition.
42 Contributed by Michael Fischer v. Mollard.
48 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
50 PP/02 Make -n do something, by making it not do something.
51 When combined with -bP, the name of an option is not output.
53 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
56 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
57 $sender_host_name and config options to manage this, and basic check
60 PP/05 DSCP support for outbound connections and control modifier for inbound.
62 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
63 (Only plugin which currently uses this is kerberos4, which nobody should
64 be using, but we should make it available and other future plugins might
65 conceivably use it, even though it would break NAT; stuff *should* be
66 using channel bindings instead).
68 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
69 name; added for Sendmail compatibility; requires admin caller.
70 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
71 just ignore it); requires trusted caller.
72 Also parse but ignore: -Ac -Am -X<logfile>
75 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
77 TL/02 Add +smtp_confirmation as a default logging option.
79 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
80 Patch by Magnus Holmgren from 2007-02-20.
82 TL/04 Bugzilla 1281 - Spec typo.
83 Bugzilla 1283 - Spec typo.
84 Bugzilla 1290 - Spec grammar fixes.
86 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
88 TL/06 Add Experimental DMARC support using libopendmarc libraries.
90 TL/07 Fix an out of order global option causing a segfault. Reported to dev
91 mailing list by by Dmitry Isaikin.
93 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
95 JH/02 Support "G" suffix to numbers in ${if comparisons.
97 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
99 NM/01 Bugzilla 1197 - Spec typo
100 Bugzilla 1196 - Spec examples corrections
102 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
104 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
105 gnutls_enable_pkcs11, but renamed to more accurately indicate its
108 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
109 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
111 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
112 "acl {{name}{arg}...}", and optional args on acl condition
115 JH/05 Permit multiple router/transport headers_add/remove lines.
117 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
119 JH/07 Avoid using a waiting database for a single-message-only transport.
120 Performance patch from Paul Fisher. Bugzilla 1262.
122 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
125 JH/09 Add $headers_added variable, with content from use of ACL modifier
126 add_header (but not yet added to the message). Bugzilla 199.
128 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
129 Pulled from Bugzilla 817 by Wolfgang Breyha.
131 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
133 (nb: this is the same fix as in Exim 4.80.1)
135 JH/11 Add A= logging on delivery lines, and a client_set_id option on
138 JH/12 Add optional authenticated_sender logging to A= and a log_selector
141 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
143 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
144 advertise SMTP AUTH mechanism to us, instead of a generic
145 protocol violation error. Also, make Exim more robust to bad
146 data from the Dovecot auth socket.
148 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
150 When a queue runner is handling a message, Exim first routes the
151 recipient addresses, during which it prunes them based on the retry
152 hints database. After that it attempts to deliver the message to
153 any remaining recipients. It then updates the hints database using
156 So if a recipient address works intermittently, it can get repeatedly
157 deferred at routing time. The retry hints record remains fresh so the
158 address never reaches the final cutoff time.
160 This is a fairly common occurrence when a user is bumping up against
161 their storage quota. Exim had some logic in its local delivery code
162 to deal with this. However it did not apply to per-recipient defers
163 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
165 This change adds a proper retry rule check during routing so that the
166 final cutoff time is checked against the message's age. We only do
167 this check if there is an address retry record and there is not a
168 domain retry record; this implies that previous attempts to handle
169 the address had the retry_use_local_parts option turned on. We use
170 this as an approximation for the destination being like a local
171 delivery, as in LMTP.
173 I suspect this new check makes the old local delivery cutoff check
174 redundant, but I have not verified this so I left the code in place.
176 TF/02 Correct gecos expansion when From: is a prefix of the username.
178 Test 0254 submits a message to Exim with the header
182 When I ran the test suite under the user fanf2, Exim expanded
183 the header to contain my full name, whereas it should have added
184 a Resent-Sender: header. It erroneously treats any prefix of the
185 username as equal to the username.
187 This change corrects that bug.
189 GF/01 DCC debug and logging tidyup
190 Error conditions log to paniclog rather than rejectlog.
191 Debug lines prefixed by "DCC: " to remove any ambiguity.
193 TF/03 Avoid unnecessary rebuilds of lookup-related code.
195 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
196 Bug spotted by Jeremy Harris; was flawed since initial commit.
197 Would have resulted in OCSP responses post-SNI triggering an Exim
198 NULL dereference and crash.
200 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
202 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
203 Bug detection, analysis and fix by Samuel Thibault.
204 Bugzilla 1331, Debian bug #698092.
206 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
208 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
209 Server implementation by Todd Lyons, client by JH.
210 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
211 config variable "prdr_enable" controls whether the server
212 advertises the facility. If the client requests PRDR a new
213 acl_data_smtp_prdr ACL is called once for each recipient, after
214 the body content is received and before the acl_smtp_data ACL.
215 The client is controlled by bolth of: a hosts_try_prdr option
216 on the smtp transport, and the server advertisement.
217 Default client logging of deliveries and rejections involving
218 PRDR are flagged with the string "PRDR".
220 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
221 fclose(). Diagnosis by Todd Lyons.
223 PP/17 Update configure.default to handle IPv6 localhost better.
224 Patch by Alain Williams (plus minor tweaks).
227 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
228 This is now consistent with GnuTLS, and is now documented: the
229 previous undocumented portable approach to treating the option as
230 unset was to force an expansion failure. That still works, and
231 an empty string is now equivalent.
233 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
234 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
235 not performing validation itself.
237 PP/20 Added force_command boolean option to pipe transport.
238 Patch from Nick Koston, of cPanel Inc.
240 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
243 TF/04 Added udpsend ACL modifer and hexquote expansion operator
245 PP/21 Fix eximon continuous updating with timestamped log-files.
246 Broken in a format-string cleanup in 4.80, missed when I repaired the
247 other false fix of the same issue.
248 Report and fix from Heiko Schlichting.
251 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
252 Report from Prashanth Katuri.
254 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
255 It's SecureTransport, so affects any MacOS clients which use the
256 system-integrated TLS libraries, including email clients.
258 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
259 using a MIME ACL for non-SMTP local injection.
260 Report and assistance in diagnosis by Warren Baker.
262 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
264 JH/16 Fix comparisons for 64b. Bugzilla 1385.
266 TL/09 Add expansion variable $authenticated_fail_id to keep track of
267 last id that failed so it may be referenced in subsequent ACL's.
269 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
272 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
273 ldap library initialization, allowing self-signed CA's to be
274 used. Also properly sets require_cert option later in code by
275 using NULL (global ldap config) instead of ldap handle (per
276 session). Bug diagnosis and testing by alxgomz.
278 TL/12 Enhanced documentation in the ratelimit.pl script provided in
279 the src/util/ subdirectory.
281 TL/13 Bug 1301 - Imported transport SQL logging patch from Axel Rau
282 renamed to Transport Post Delivery Action by Jeremy Harris, as
285 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
286 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
287 redis_servers = needs to be configured which will be used by the redis
288 lookup. Patch from Warren Baker, of The Packet Hub.
290 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
292 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
293 hostname or reverse DNS when processing a host list. Used suggestions
294 from multiple comments on this bug.
296 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
298 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
299 Missed a few lines, added it to make the runtest require no keyboard
302 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
303 contains upper case chars. Make router use caseful_local_part.
305 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
306 support when GnuTLS has been built with p11-kit.
312 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
314 This, or similar/improved, will also be change PP/11 of 4.82.
320 PP/01 Handle short writes when writing local log-files.
321 In practice, only affects FreeBSD (8 onwards).
322 Bugzilla 1053, with thanks to Dmitry Isaikin.
324 NM/01 Bugzilla 949 - Documentation tweak
326 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
329 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
331 PP/02 Implemented gsasl authenticator.
333 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
335 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
336 `pkg-config foo` for cflags/libs.
338 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
339 with rest of GSASL and with heimdal_gssapi.
341 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
342 `pkg-config foo` for cflags/libs for the TLS implementation.
344 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
345 properties get this fed in as external SSF. A number of robustness
346 and debugging improvements to the cyrus_sasl authenticator.
348 PP/08 cyrus_sasl server now expands the server_realm option.
350 PP/09 Bugzilla 1214 - Log authentication information in reject log.
351 Patch by Jeremy Harris.
353 PP/10 Added dbmjz lookup type.
355 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
357 PP/12 MAIL args handles TAB as well as SP, for better interop with
358 non-compliant senders.
359 Analysis and variant patch by Todd Lyons.
361 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
362 Bug report from Lars Müller <lars@samba.org> (via SUSE),
363 Patch from Dirk Mueller <dmueller@suse.com>
365 PP/13 tls_peerdn now print-escaped for spool files.
366 Observed some $tls_peerdn in wild which contained \n, which resulted
367 in spool file corruption.
369 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
370 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
371 or write after TLS renegotiation, which otherwise led to messages
374 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
375 as a tracking header (ie: a signed header comes before the signature).
376 Patch from Wolfgang Breyha.
378 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
379 comma-sep list; embedded commas doubled.
381 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
383 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
385 Report and patch from Dmitry Banschikov.
387 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
388 Removed SSL_clear() after SSL_new() which led to protocol negotiation
389 failures. We appear to now support TLS1.1+ with Exim.
391 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
392 lets Exim select keys and certificates based upon TLS SNI from client.
393 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
394 before an outbound SMTP session. New log_selector, +tls_sni.
396 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
397 NULL dereference. Report and patch from Alun Jones.
399 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
400 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
401 Not seeing resolver debug output on NetBSD, but suspect this is a
402 resolver implementation change.
404 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
405 Left warnings. Added "eximon gdb" invocation mode.
407 PP/21 Defaulting "accept_8bitmime" to true, not false.
409 PP/22 Added -bw for inetd wait mode support.
411 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
412 locate the relevant includes and libraries. Made this the default.
414 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
415 Bugzilla 1246, report and most of solution from Tomasz Kusy.
417 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
418 This may cause build issues on older platforms.
420 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
421 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
422 gnutls_require_mac & gnutls_require_protocols (no longer supported).
423 Added SNI support via GnuTLS too.
424 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
426 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
428 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
429 Applied second patch from Janne, implementing suggestion to default
430 multiple-strings-in-record handling to match SPF spec.
432 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
434 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
435 read-only, out of scope).
436 Patch from Wolfgang Breyha, report from Stuart Northfield.
438 PP/29 Fix three issues highlighted by clang analyser static analysis.
439 Only crash-plausible issue would require the Cambridge-specific
440 iplookup router and a misconfiguration.
441 Report from Marcin Mirosław.
443 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
445 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
446 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
447 As part of this, removing so much warning spew let me fix some minor
448 real issues in debug logging.
450 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
451 assignment on my part. Fixed.
453 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
454 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
455 Janne Snabb (who went above and beyond: thank you).
457 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
458 string otherwise requires a connection and a bunch more work and it's
459 relatively easy to get wrong. Should also expose TLS library linkage
462 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
463 64-bit ${eval} (JH/03).
465 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
466 GNU libc to support some of the 64-bit stuff, should not lead to
467 conflicts. Defined before os.h is pulled in, so if a given platform
468 needs to override this, it can.
470 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
471 protection layer was required, which is not implemented.
472 Bugzilla 1254, patch from Wolfgang Breyha.
474 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
475 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
476 tls_dhparam take prime identifiers. Also unbreak combination of
477 OpenSSL+DH_params+TLSSNI.
479 PP/39 Disable SSLv2 by default in OpenSSL support.
485 PP/01 Solaris build fix for Oracle's LDAP libraries.
486 Bugzilla 1109, patch from Stephen Usher.
488 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
490 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
493 TF/02 Fix a couple more cases where we did not log the error message
494 when unlink() failed. See also change 4.74-TF/03.
496 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
497 lock up or crash if it happened to be inside a call to libc when it
498 got a SIGUSR1 from exiwhat.
500 The SIGUSR1 handler appends the current process status to the process
501 log which is later printed by exiwhat. It used to use the general
502 purpose logging code to do this, but several functions it calls are
503 not safe for signals.
505 The new output code in the SIGUSR1 handler is specific to the process
506 log, and simple enough that it's easy to inspect for signal safety.
507 Removing some special cases also simplifies the general logging code.
508 Removing the spurious timestamps from the process log simplifies
511 TF/04 Improved ratelimit ACL condition.
513 The /noupdate option has been deprecated in favour of /readonly which
514 has clearer semantics. The /leaky, /strict, and /readonly update modes
515 are mutually exclusive. The update mode is no longer included in the
516 database key; it just determines when the database is updated. (This
517 means that when you upgrde Exim will forget old rate measurements.)
519 Exim now checks that the per_* options are used with an update mode that
520 makes sense for the current ACL. For example, when Exim is processing a
521 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
522 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
523 must specify per_mail/readonly. If you omit the update mode it defaults to
524 /leaky where that makes sense (as before) or /readonly where required.
526 The /noupdate option is now undocumented but still supported for
527 backwards compatibility. It is equivalent to /readonly except that in
528 ACLs where /readonly is required you may specify /leaky/noupdate or
529 /strict/noupdate which are treated the same as /readonly.
531 A useful new feature is the /count= option. This is a generalization
532 of the per_byte option, so that you can measure the throughput of other
533 aggregate values. For example, the per_byte option is now equivalent
534 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
536 The per_rcpt option has been generalized using the /count= mechanism
537 (though it's more complicated than the per_byte equivalence). When it is
538 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
539 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
540 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
541 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
542 Note that using per_rcpt with a non-readonly update mode in more than
543 one ACL will cause the recipients to be double-counted. (The per_mail
544 and per_byte options don't have this problem.)
546 The handling of very low rates has changed slightly. If the computed rate
547 is less than the event's count (usually one) then this event is the first
548 after a long gap. In this case the rate is set to the same as this event's
549 count, so that the first message of a spam run is counted properly.
551 The major new feature is a mechanism for counting the rate of unique
552 events. The new per_addr option counts the number of different
553 recipients that someone has sent messages to in the last time period. It
554 behaves like per_rcpt if all the recipient addresses are different, but
555 duplicate recipient addresses do not increase the measured rate. Like
556 the /count= option this is a general mechanism, so the per_addr option
557 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
558 example, measure the rate that a client uses different sender addresses
559 with the options per_mail/unique=$sender_address. There are further
560 details in the main documentation.
562 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
564 TF/06 Removed a few PCRE remnants.
566 TF/07 Automatically extract Exim's version number from tags in the git
567 repository when doing development or release builds.
569 PP/02 Raise smtp_cmd_buffer_size to 16kB.
570 Bugzilla 879. Patch from Paul Fisher.
572 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
573 Heavily based on revision 40f9a89a from Simon Arlott's tree.
576 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
578 PP/05 Variable $av_failed, true if the AV scanner deferred.
579 Bugzilla 1078. Patch from John Horne.
581 PP/06 Stop make process more reliably on build failure.
582 Bugzilla 1087. Patch from Heiko Schlittermann.
584 PP/07 Make maildir_use_size_file an _expandable_ boolean.
585 Bugzilla 1089. Patch from Heiko Schlittermann.
587 PP/08 Handle ${run} returning more data than OS pipe buffer size.
588 Bugzilla 1131. Patch from Holger Weiß.
590 PP/09 Handle IPv6 addresses with SPF.
591 Bugzilla 860. Patch from Wolfgang Breyha.
593 PP/10 GnuTLS: support TLS 1.2 & 1.1.
595 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
598 PP/11 match_* no longer expand right-hand-side by default.
599 New compile-time build option, EXPAND_LISTMATCH_RHS.
600 New expansion conditions, "inlist", "inlisti".
602 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
604 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
606 PP/14 fix log_write() format string regression from TF/03.
607 Bugzilla 1152. Patch from Dmitry Isaikin.
613 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
615 PP/02 Harmonised TLS library version reporting; only show if debugging.
616 Layout now matches that introduced for other libraries in 4.74 PP/03.
618 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
620 PP/04 New "dns_use_edns0" global option.
622 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
625 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
626 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
628 TK/01 Updated PolarSSL code to 0.14.2.
629 Bugzilla 1097. Patch from Andreas Metzler.
631 PP/07 Catch divide-by-zero in ${eval:...}.
634 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
637 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
638 format-string attack -- SECURITY: remote arbitrary code execution.
640 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
641 time unintentionally subject to list matching rules, letting the header
642 cause arbitrary Exim lookups (of items which can occur in lists, *not*
643 arbitrary string expansion). This allowed for information disclosure.
645 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
646 INT_MIN/-1 -- value coerced to INT_MAX.
652 NM/01 Workround for PCRE version dependency in version reporting
655 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
656 This fixes portability to compilers other than gcc, notably
657 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
659 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
660 makefiles for portability to HP-UX and POSIX correctness.
662 PP/01 Permit LOOKUP_foo enabling on the make command-line.
663 Also via indented variable definition in the Makefile.
664 (Debugging by Oliver Heesakkers).
666 PP/02 Restore caching of spamd results with expanded spamd_address.
667 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
669 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
670 Improves build reliability. Fix from: Frank Elsner
672 NM/02 Fix wide character breakage in the rfc2047 coding
673 Fixes bug 1064. Patch from Andrey N. Oktyabrski
675 NM/03 Allow underscore in dnslist lookups
676 Fixes bug 1026. Patch from Graeme Fowler
678 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
679 Code patches from Adam Ciarcinski of NetBSD.
681 NM/04 Fixed exiqgrep to cope with mailq missing size issue
684 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
685 is logged, to avoid truncation. Patch from John Horne.
687 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
688 Patch from Jakob Hirsch.
690 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
691 SQL string expansion failure details.
692 Patch from Andrey Oktyabrski.
694 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
695 Patch from Simon Arlott.
697 PP/09 New lookups functionality failed to compile on old gcc which rejects
698 extern declarations in function scope.
699 Patch from Oliver Fleischmann
701 PP/10 Use sig_atomic_t for flags set from signal handlers.
702 Check getgroups() return and improve debugging.
703 Fixed developed for diagnosis in bug 927 (which turned out to be
706 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
707 Patch from Mark Zealey.
709 PP/12 Bugzilla 1056: Improved spamd server selection.
710 Patch from Mark Zealey.
712 PP/13 Bugzilla 1086: Deal with maildir quota file races.
713 Based on patch from Heiko Schlittermann.
715 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
716 Patch from Uwe Doering, sign-off by Michael Haardt.
718 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
719 variable declaration deep within a block. Bug and patch from
722 PP/15 lookups-Makefile IRIX compatibilty coercion.
724 PP/16 Make DISABLE_DKIM build knob functional.
726 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
727 Patch by Simon Arlott
729 TF/03 Fix valgrind.h portability to C89 compilers that do not support
730 variable argument macros. Our copy now differs from upstream.
736 TF/01 Failure to get a lock on a hints database can have serious
737 consequences so log it to the panic log.
739 TF/02 Log LMTP confirmation messages in the same way as SMTP,
740 controlled using the smtp_confirmation log selector.
742 TF/03 Include the error message when we fail to unlink a spool file.
744 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
745 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
746 for maintaining out-of-tree patches for some time.
748 PP/01 Bugzilla 139: Documentation and portability issues.
749 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
750 Handle per-OS dynamic-module compilation flags.
752 PP/02 Let /dev/null have normal permissions.
753 The 4.73 fixes were a little too stringent and complained about the
754 permissions on /dev/null. Exempt it from some checks.
755 Reported by Andreas M. Kirchwitz.
757 PP/03 Report version information for many libraries, including
758 Exim version information for dynamically loaded libraries. Created
759 version.h, now support a version extension string for distributors
760 who patch heavily. Dynamic module ABI change.
762 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
763 privilege escalation vulnerability whereby the Exim run-time user
764 can cause root to append content of the attacker's choosing to
767 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
770 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
771 If dropping privileges for untrusted macros, we disabled normal logging
772 on the basis that it would fail; for the Exim run-time user, this is not
773 the case, and it resulted in successful deliveries going unlogged.
774 Fixed. Reported by Andreas Metzler.
780 PP/01 Date: & Message-Id: revert to normally being appended to a message,
781 only prepend for the Resent-* case. Fixes regression introduced in
782 Exim 4.70 by NM/22 for Bugzilla 607.
784 PP/02 Include check_rfc2047_length in configure.default because we're seeing
785 increasing numbers of administrators be bitten by this.
787 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
789 PP/03 Bugzilla 994: added openssl_options main configuration option.
791 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
793 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
795 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
797 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
798 without a peer certificate, leading to a segfault because of an
799 assumption that peers always have certificates. Be a little more
800 paranoid. Problem reported by Martin Tscholak.
802 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
803 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
804 NB: ClamAV planning to remove STREAM in "middle of 2010".
805 CL also introduces -bmalware, various -d+acl logging additions and
806 more caution in buffer sizes.
808 PP/09 Implemented reverse_ip expansion operator.
810 PP/10 Bugzilla 937: provide a "debug" ACL control.
812 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
814 PP/12 Bugzilla 973: Implement --version.
816 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
818 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
820 PP/15 Bugzilla 816: support multiple condition rules on Routers.
822 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
823 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
824 ignore trailing whitespace.
826 JJ/02 prevent non-panic DKIM error from being sent to paniclog
828 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
831 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
832 Notification from Dr Andrew Aitchison.
834 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
835 ExtendedDetectionInfo response format.
836 Notification from John Horne.
838 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
841 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
842 XSL and documented dependency on system catalogs, with examples of how
845 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
848 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
849 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
850 configuration file which is writeable by the Exim user or group.
852 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
853 of configuration files to cover files specified with the -C option if
854 they are going to be used with root privileges, not just the default
857 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
858 option (effectively making it always true).
860 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
861 files to be used while preserving root privileges.
863 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
864 that rogue child processes cannot use them.
866 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
867 run-time user, instead of root.
869 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
870 Exim run-time user without dropping privileges.
872 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
873 result string, instead of calling string_vformat() twice with the same
876 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
877 for other users. Others should always drop root privileges if they use
878 -C on the command line, even for a whitelisted configure file.
880 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
882 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
888 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
889 $data_path, and $header_path variables; fixed documentation bugs and
892 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
893 exipick to access non-standard spools, including the "frozen" queue
896 NM/01 Bugzilla 965: Support mysql stored procedures.
897 Patch from Alain Williams
899 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
901 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
902 Patch from Andreas Metzler
904 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
905 Patch from Kirill Miazine
907 NM/05 Bugzilla 671: Added umask to procmail example.
909 JJ/03 installed exipick 20100323.0, fixing doc bug
911 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
912 directory. Notification and patch from Dan Rosenberg.
914 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
916 TK/02 Improve log output when DKIM signing operation fails.
918 MH/01 Treat the transport option dkim_domain as a colon separated
919 list, not as a single string, and sign the message with each element,
920 omitting multiple occurences of the same signer.
922 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
923 Bugzilla 985, 986. Patch by Simon Arlott
925 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
926 Patch by Simon Arlott
928 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
929 MBX locking. Notification from Dan Rosenberg.
935 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
937 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
939 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
941 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
943 NM/04 Bugzilla 915: Flag broken perl installation during build.
949 TK/01 Added patch by Johannes Berg that expands the main option
950 "spamd_address" if it starts with a dollar sign.
952 TK/02 Write list of recipients to X-Envelope-Sender header when building
953 the mbox-format spool file for content scanning (suggested by Jakob
956 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
957 (http://www.dcc-servers.net/) support via dccifd. Activated by
958 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
960 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
961 by Mark Daniel Reidel <mr@df.eu>.
963 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
964 When building exim an external PCRE library is now needed -
965 PCRE is a system library on the majority of modern systems.
966 See entry on PCRE_LIBS in EDITME file.
968 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
969 conversation. Added nologin parameter to request.
970 Patch contributed by Kirill Miazine.
972 TF/01 Do not log submission mode rewrites if they do not change the address.
974 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
976 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
977 log files in place. Contributed by Roberto Lima.
979 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
981 TF/03 Bugzilla 615: When checking the local_parts router precondition
982 after a local_part_suffix or local_part_prefix option, Exim now
983 does not use the address's named list lookup cache, since this
984 contains cached lookups for the whole local part.
986 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
987 Robert Millan. Documentation is in experimental-spec.txt.
989 TF/04 Bugzilla 668: Fix parallel build (make -j).
991 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
993 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
994 Patch provided by Jan Srzednicki.
996 TF/05 Leading white space used to be stripped from $spam_report which
997 wrecked the formatting. Now it is preserved.
999 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
1000 that they are available at delivery time.
1002 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
1004 TF/08 TLS error reporting now respects the incoming_interface and
1005 incoming_port log selectors.
1007 TF/09 Produce a more useful error message if an SMTP transport's hosts
1008 setting expands to an empty string.
1010 NM/06 Bugzilla 744: EXPN did not work under TLS.
1011 Patch provided by Phil Pennock.
1013 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
1014 Patch provided by Richard Godbee.
1016 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
1017 acl_smtp_notquit, added index entry.
1019 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
1020 Patch provided by Eugene Bujak.
1022 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
1023 accept(). Patch provided by Maxim Dounin.
1025 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
1026 Patch provided by Phil Pennock.
1028 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
1030 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
1031 Patch provided by Brad "anomie" Jorsch.
1033 NM/14 Bugzilla 622: Added timeout setting to transport filter.
1034 Patch provided by Dean Brooks.
1036 TK/05 Add native DKIM support (does not depend on external libraries).
1038 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
1039 Patch provided by Graeme Fowler.
1041 NM/16 Bugzilla 851: Documentation example syntax fix.
1043 NM/17 Changed NOTICE file to remove references to embedded PCRE.
1045 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
1048 NM/19 Bugzilla 745: TLS version reporting.
1049 Patch provided by Phil Pennock.
1051 NM/20 Bugzilla 167: bool: condition support.
1052 Patch provided by Phil Pennock.
1054 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
1055 clients. Patch provided by Phil Pennock.
1057 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
1058 Patch provided by Brad "anomie" Jorsch.
1060 NM/23 Bugzilla 687: Fix misparses in eximstats.
1061 Patch provided by Heiko Schlittermann.
1063 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
1064 Patch provided by Heiko Schlittermann.
1066 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1067 plus update to original patch.
1069 NM/26 Bugzilla 799: Documentation correction for ratelimit.
1071 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
1072 Patch provided by David Brownlee.
1074 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
1076 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
1078 NM/30 Bugzilla 888: TLS documentation bugfixes.
1080 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
1082 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
1083 Unlike the original bugzilla I have changed all shell scripts in src tree.
1085 NM/33 Bugzilla 898: Transport filter timeout fix.
1086 Patch by Todd Rinaldo.
1088 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
1089 Patch by Serge Demonchaux.
1091 NM/35 Bugzilla 39: Base64 decode bug fixes.
1092 Patch by Jakob Hirsch.
1094 NM/36 Bugzilla 909: Correct connect() call in dcc code.
1096 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
1098 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
1100 NM/39 Bugzilla 911: Fixed MakeLinks build script.
1106 TK/01 Add preliminary DKIM support. Currently requires a forked version of
1107 ALT-N's libdkim that I have put here:
1108 http://duncanthrax.net/exim-experimental/
1110 Note to Michael Haardt: I had to rename some vars in sieve.c. They
1111 were called 'true' and it seems that C99 defines that as a reserved
1112 keyword to be used with 'bool' variable types. That means you could
1113 not include C99-style headers which use bools without triggering
1114 build errors in sieve.c.
1116 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
1117 as mailq or other aliases. Changed the --help handling significantly
1118 to do whats expected. exim_usage() emits usage/help information.
1120 SC/01 Added the -bylocaldomain option to eximstats.
1122 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
1124 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
1126 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
1132 PH/01 Another patch from the Sieve maintainer.
1134 PH/02 When an IPv6 address is converted to a string for single-key lookup
1135 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
1136 dots are used instead of colons so that keys in lsearch files need not
1137 contain colons. This was done some time before quoting was made available
1138 in lsearch files. However, iplsearch files do require colons in IPv6 keys
1139 (notated using the quote facility) so as to distinguish them from IPv4
1140 keys. This meant that lookups for IP addresses in host lists did not work
1141 for iplsearch lookups.
1143 This has been fixed by arranging for IPv6 addresses to be expressed with
1144 colons if the lookup type is iplsearch. This is not incompatible, because
1145 previously such lookups could never work.
1147 The situation is now rather anomolous, since one *can* have colons in
1148 ordinary lsearch keys. However, making the change in all cases is
1149 incompatible and would probably break a number of configurations.
1151 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
1154 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
1155 conversion specification without a maximum field width, thereby enabling
1156 a rogue spamd server to cause a buffer overflow. While nobody in their
1157 right mind would setup Exim to query an untrusted spamd server, an
1158 attacker that gains access to a server running spamd could potentially
1159 exploit this vulnerability to run arbitrary code as the Exim user.
1161 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
1162 $primary_hostname instead of what libspf2 thinks the hosts name is.
1164 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
1165 a directory entry by the name of the lookup key. Previously, if a
1166 symlink pointed to a non-existing file or a file in a directory that
1167 Exim lacked permissions to read, a lookup for a key matching that
1168 symlink would fail. Now it is enough that a matching directory entry
1169 exists, symlink or not. (Bugzilla 503.)
1171 PH/03 The body_linecount and body_zerocount variables are now exported in the
1174 PH/04 Added the $dnslist_matched variable.
1176 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
1177 This means they are set thereafter only if the connection becomes
1180 PH/06 Added the client_condition to authenticators so that some can be skipped
1181 by clients under certain conditions.
1183 PH/07 The error message for a badly-placed control=no_multiline_responses left
1184 "_responses" off the end of the name.
1186 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
1188 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
1189 (without spaces) instead of just copying the configuration text.
1191 PH/10 Added the /noupdate option to the ratelimit ACL condition.
1193 PH/11 Added $max_received_linelength.
1195 PH/12 Added +ignore_defer and +include_defer to host lists.
1197 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
1198 way in which PCRE > 7.0 is built.
1200 PH/14 Implemented queue_only_load_latch.
1202 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
1203 MAIL command. The effect was to mangle the value on 64-bit systems.
1205 PH/16 Another patch from the Sieve maintainer.
1207 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
1209 PH/18 If a system quota error occurred while trying to create the file for
1210 a maildir delivery, the message "Mailbox is full" was not appended to the
1211 bounce if the delivery eventually timed out. Change 4.67/27 below applied
1212 only to a quota excession during the actual writing of the file.
1214 PH/19 It seems that peer DN values may contain newlines (and other non-printing
1215 characters?) which causes problems in log lines. The DN values are now
1216 passed through string_printing() before being added to log lines.
1218 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
1219 and InterBase are left for another time.)
1221 PH/21 Added message_body_newlines option.
1223 PH/22 Guard against possible overflow in moan_check_errorcopy().
1225 PH/23 POSIX allows open() to be a macro; guard against that.
1227 PH/24 If the recipient of an error message contained an @ in the local part
1228 (suitably quoted, of course), incorrect values were put in $domain and
1229 $local_part during the evaluation of errors_copy.
1235 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
1236 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
1239 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
1240 issue a MAIL command.
1242 PH/02 In an ACL statement such as
1244 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
1246 if a client was not listed at all, or was listed with a value other than
1247 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
1248 the condition was not true (as it should be), so access was not denied.
1249 The bug was that the ! inversion was incorrectly passed on to the second
1250 item. This has been fixed.
1252 PH/03 Added additional dnslists conditions == and =& which are different from
1253 = and & when the dns lookup returns more than one IP address.
1255 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
1256 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
1258 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
1259 FSYNC, which compiles an option called disable_fsync that allows for
1260 bypassing fsync(). The documentation is heavily laced with warnings.
1262 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
1264 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
1265 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
1266 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
1267 including adding "make clean"; (3) Added -fPIC when compiling the test
1268 dynamically loaded module, to get rid of a warning.
1270 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
1271 message fails, move_frozen_messages = true and ignore_bounce_errors_after
1272 = 0s. The bug is otherwise harmless.
1274 PH/07 There was a bug in the dovecot authenticator such that the value of
1275 $auth1 could be overwritten, and so not correctly preserved, after a
1276 successful authentication. This usually meant that the value preserved by
1277 the server_setid option was incorrect.
1279 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
1281 PH/09 Installed PCRE release 7.0.
1283 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
1284 run for batched SMTP input. It is now run at the start of every message
1285 in the batch. While fixing this I discovered that the process information
1286 (output by running exiwhat) was not always getting set for -bs and -bS
1287 input. This is fixed, and it now also says "batched" for BSMTP.
1289 PH/11 Added control=no_pipelining.
1291 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
1292 patch, slightly modified), and move the expansion of helo_data till after
1293 the connection is made in the smtp transport (so it can use these
1296 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1298 PH/14 Added log_selector = +pid.
1300 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1302 PH/16 Add ${if forany and ${if forall.
1304 PH/17 Added dsn_from option to vary the From: line in DSNs.
1306 PH/18 Flush SMTP output before performing a callout, unless control =
1307 no_callout_flush is set.
1309 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1310 was true (the default) a successful delivery failed to delete the retry
1311 item, thus causing premature timeout of the address. The bug is now
1314 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1316 PH/21 Long custom messages for fakedefer and fakereject are now split up
1317 into multiline reponses in the same way that messages for "deny" and
1318 other ACL rejections are.
1320 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1321 with slight modification.
1323 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1324 draft, changing the syntax and factoring some duplicate code".
1326 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1327 for deliveries of the second and subsequent messages over the same SMTP
1330 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1331 ${reduce, with only minor "tidies".
1333 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1335 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1336 expansion side effects.
1338 PH/27 When a message times out after an over-quota error from an Exim-imposed
1339 quota, the bounce message says "mailbox is full". This message was not
1340 being given when it was a system quota that was exceeded. It now should
1343 MH/03 Made $recipients available in local_scan(). local_scan() already has
1344 better access to the recipient list through recipients_list[], but
1345 $recipients can be useful in postmaster-provided expansion strings.
1347 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1348 in the case of a MAIL command with additional options following the
1349 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1350 were accidentally chopped off.
1352 PH/29 SMTP synchronization checks are implemented when a command is read -
1353 there is a check that no more input is waiting when there shouldn't be
1354 any. However, for some commands, a delay in an ACL can mean that it is
1355 some time before the response is written. In this time, more input might
1356 arrive, invalidly. So now there are extra checks after an ACL has run for
1357 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1358 pipelining has not been advertised.
1360 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1362 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1363 returned in the SMTP response when smtp_return_error_details was false.
1364 This has been fixed.
1366 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1367 instead of the C I/O that was originally supplied, because problems were
1368 reported on Solaris.
1370 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1371 Exim which did not show up earlier: it was assuming that a call to
1372 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1373 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1374 was a macro that became an assignment, so it seemed to work. This has
1375 changed to a proper function call with a void return, hence the compile
1376 error. Exim's code has been fixed.
1378 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1381 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1383 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1385 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1386 because it turns out to be too big or there is a timeout) there is no
1387 "Completed" line in the log. When some messages of this type were
1388 selected by exigrep, they were listed as "not completed". Others were
1389 picked up by some special patterns. I have improved the selection
1390 criteria to be more general.
1392 PH/38 The host_find_failed option in the manualroute router can now be set
1393 to "ignore", to completely ignore a host whose IP address cannot be
1394 found. If all hosts are ignored, the behaviour is controlled by the new
1395 host_all_ignored option.
1397 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1398 homing or because of multiple MX records with /mx) generated more than
1399 one IP address, and the following item turned out to be the local host,
1400 all the secondary addresses of the first item were incorrectly removed
1401 from the list, along with the local host and any following hosts (which
1402 is what is supposed to happen).
1404 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1405 whoever called Exim into the -H file. In the case of the daemon it was
1406 behaving confusingly. When first started, it used values for whoever
1407 started the daemon, but after a SIGHUP it used the Exim user (because it
1408 calls itself on a restart). I have changed the code so that it now always
1411 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1412 message are rejected with the same error (e.g. no authentication or bad
1413 sender address), and a DATA command is nevertheless sent (as can happen
1414 with PIPELINING or a stupid MUA), the error message that was given to the
1415 RCPT commands is included in the rejection of the DATA command. This is
1416 intended to be helpful for MUAs that show only the final error to their
1419 PH/42 Another patch from the Sieve maintainer.
1421 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1422 Eximstats - Fixed some broken HTML links and added missing column headers
1424 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1425 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1427 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1429 PH/43 Yet another patch from the Sieve maintainer.
1431 PH/44 I found a way to check for a TCP/IP connection going away before sending
1432 the response to the final '.' that terminates a message, but only in the
1433 case where the client has not sent further data following the '.'
1434 (unfortunately, this is allowed). However, in many cases there won't be
1435 any further data because there won't be any more messages to send. A call
1436 to select() can be used: if it shows that the input is "ready", there is
1437 either input waiting, or the socket has been closed. An attempt to read
1438 the next input character can distinguish the two cases. Previously, Exim
1439 would have sent an OK response which the client would never have see.
1440 This could lead to message repetition. This fix should cure that, at
1441 least in a lot of common cases.
1443 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1444 advertised in response to EHLO.
1450 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
1451 fixed by 4.65/MH/01 (is this a record?) are fixed:
1453 (i) An empty string was always treated as zero by the numeric comparison
1454 operators. This behaviour has been restored.
1456 (ii) It is documented that the numeric comparison operators always treat
1457 their arguments as decimal numbers. This was broken in that numbers
1458 starting with 0 were being interpreted as octal.
1460 While fixing these problems I realized that there was another issue that
1461 hadn't been noticed. Values of message_size_limit (both the global option
1462 and the transport option) were treated as octal if they started with 0.
1463 The documentation was vague. These values are now always treated as
1464 decimal, and I will make that clear in the documentation.
1470 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
1471 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
1474 MH/01 Don't check that the operands of numeric comparison operators are
1475 integers when their expansion is in "skipping" mode (fixes bug
1476 introduced by 4.64-PH/07).
1478 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
1479 child addresses, Exim now panics and dies. Previously, because the count
1480 is held in a short int, deliveries were likely to be lost. As such a
1481 large number of recipients for a single message is ridiculous
1482 (performance will be very, very poor), I have chosen to impose a limit
1483 rather than extend the field.
1489 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
1490 leftover -K file (the existence of which was triggered by #402).
1491 While we were at it, introduced process PID as part of the -K
1492 filename. This should rule out race conditions when creating
1495 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
1496 processing considerably. Previous code took too long for large mails,
1497 triggering a timeout which in turn triggers #401.
1499 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
1500 in the DK code in transports.c. sendfile() is not really portable,
1501 hence the _LINUX specificness.
1503 TF/01 In the add_headers option to the mail command in an Exim filter,
1504 there was a bug that Exim would claim a syntax error in any
1505 header after the first one which had an odd number of characters
1508 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
1509 callout verification, Exim cached a "reject" for the entire domain. This
1510 is correct for most verifications, but it is not correct for a recipient
1511 verification with use_sender or use_postmaster set, because in that case
1512 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
1513 case of MAIL FROM:<> rejection from other early rejections (e.g.
1514 rejection of HELO). When verifying a recipient using a non-null MAIL
1515 address, the cache is ignored if it shows MAIL FROM:<> rejection.
1516 Whatever the result of the callout, the value of the domain cache is
1517 left unchanged (for any other kind of callout, getting as far as trying
1518 RCPT means that the domain itself is ok).
1520 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
1523 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
1524 manifest itself as EPIPE rather than ECONNECT. When tidying away a
1525 session, the daemon ignores ECONNECT errors and logs others; it now
1526 ignores EPIPE as well.
1528 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
1529 (quoted-printable decoding).
1531 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
1532 later the small subsequent patch to fix an introduced bug.
1534 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
1536 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
1538 PH/08 An error is now given if message_size_limit is specified negative.
1540 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
1541 to be given (somewhat) arbitrary names.
1543 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
1546 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
1547 miscellaneous code fixes
1549 PH/10 Added the log_reject_target ACL modifier to specify where to log
1552 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
1553 hostname. This is wrong, because it relates to the incoming message (and
1554 probably the interface on which it is arriving) and not to the outgoing
1555 callout (which could be using a different interface). This has been
1556 changed to use the value of the helo_data option from the smtp transport
1557 instead - this is what is used when a message is actually being sent. If
1558 there is no remote transport (possible with a router that sets up host
1559 addresses), $smtp_active_hostname is used.
1561 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
1562 tweaks were necessary in order to get it to work (see also 21 below):
1563 (a) The code assumed that strncpy() returns a negative number on buffer
1564 overflow, which isn't the case. Replaced with Exim's string_format()
1566 (b) There were several signed/unsigned issues. I just did the minimum
1567 hacking in of casts. There is scope for a larger refactoring.
1568 (c) The code used strcasecmp() which is not a standard C function.
1569 Replaced with Exim's strcmpic() function.
1570 (d) The code set only $1; it now sets $auth1 as well.
1571 (e) A simple test gave the error "authentication client didn't specify
1572 service in request". It would seem that Dovecot has changed its
1573 interface. Fortunately there's a specification; I followed it and
1574 changed what the client sends and it appears to be working now.
1576 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
1579 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
1580 address A is aliased to B and C, where B exists and C does not. Without
1581 -v the output is "A verified" because verification stops after a
1582 successful redirection if more than one address is generated. However,
1583 with -v the child addresses are also verified. Exim was outputting "A
1584 failed to verify" and then showing the successful verification for C,
1585 with its parentage. It now outputs "B failed to verify", showing B's
1586 parentage before showing the successful verification of C.
1588 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
1589 look up a TXT record in a specific list after matching in a combined
1592 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
1593 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
1594 they consult the DNS. I had assumed they would set it the way they
1595 wanted; and indeed my experiments on Linux seem to show that in some
1596 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
1597 To be on the safe side, however, I have now made the interface to
1598 host_find_byname() similar to host_find_bydns(), with an argument
1599 containing the DNS resolver options. The host_find_byname() function now
1600 sets these options at its start, just as host_find_bydns() does. The smtp
1601 transport options dns_qualify_single and dns_search_parents are passed to
1602 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
1603 of host_find_byname() use the default settings of RES_DEFNAMES
1604 (qualify_single) but not RES_DNSRCH (search_parents).
1606 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
1607 spool_read_header() do less string testing, by means of a preliminary
1608 switch on the second character of optional "-foo" lines. (This is
1609 overdue, caused by the large number of possibilities that now exist.
1610 Originally there were few.) While I was there, I also converted the
1611 str(n)cmp tests so they don't re-test the leading "-" and the first
1612 character, in the hope this might squeeze out yet more improvement.
1614 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
1615 flag allowing group syntax was set by the header_syntax check but not
1616 turned off, possible causing trouble later; (2) The flag was not being
1617 set at all for the header_verify test, causing "group"-style headers to
1618 be rejected. I have now set it in this case, and also caused header_
1619 verify to ignore an empty address taken from a group. While doing this, I
1620 came across some other cases where the code for allowing group syntax
1621 while scanning a header line wasn't quite right (mostly, not resetting
1622 the flag correctly in the right place). These bugs could have caused
1623 trouble for malformed header lines. I hope it is now all correct.
1625 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
1626 with the "reply" argument non-NULL. The code, however (which originally
1627 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
1628 but it didn't always do it. This confused somebody who was copying the
1629 code for some other use. I have removed all the tests.
1631 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
1632 feature that was used to support insecure browsers during the U.S. crypto
1633 embargo. It requires special client support, and Exim is probably the
1634 only MTA that supported it -- and would never use it because real RSA is
1635 always available. This code has been removed, because it had the bad
1636 effect of slowing Exim down by computing (never used) parameters for the
1637 RSA_EXPORT functionality.
1639 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
1640 authenticator to fail if there's a tab character in the incoming data
1641 (there should never be unless someone is messing about, as it's supposed
1642 to be base64-encoded). Also added, on Timo's advice, the "secured" option
1643 if the connection is using TLS or if the remote IP is the same as the
1644 local IP, and the "valid-client-cert option" if a client certificate has
1647 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
1648 authenticators. This can be used for authorization after authentication
1649 succeeds. (In the case of plaintext, it servers for both authentication
1652 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
1653 if any retry times were supplied.
1655 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
1656 connection, where there is no client IP address to check. In this
1657 situation, the verify now always succeeds.
1659 PH/25 Applied John Jetmore's -Mset patch.
1661 PH/26 Added -bem to be like -Mset, but loading a message from a file.
1663 PH/27 In a string expansion for a processed (not raw) header when multiple
1664 headers of the same name were present, leading whitespace was being
1665 removed from all of them, but trailing whitespace was being removed only
1666 from the last one. Now trailing whitespace is removed from each header
1667 before concatenation. Completely empty headers in a concatenation (as
1668 before) are ignored.
1670 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
1671 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
1673 PH/29 [Removed. This was a change that I later backed out, and forgot to
1674 correct the ChangeLog entry (that I had efficiently created) before
1675 committing the later change.]
1677 PH/30 Exim was sometimes attempting to deliver messages that had suffered
1678 address errors (4xx response to RCPT) over the same connection as other
1679 messages routed to the same hosts. Such deliveries are always "forced",
1680 so retry times are not inspected. This resulted in far too many retries
1681 for the affected addresses. The effect occurred only when there were more
1682 hosts than the hosts_max_try setting in the smtp transport when it had
1683 the 4xx errors. Those hosts that it had tried were not added to the list
1684 of hosts for which the message was waiting, so if all were tried, there
1685 was no problem. Two fixes have been applied:
1687 (i) If there are any address or message errors in an SMTP delivery, none
1688 of the hosts (tried or untried) are now added to the list of hosts
1689 for which the message is waiting, so the message should not be a
1690 candidate for sending over the same connection that was used for a
1691 successful delivery of some other message. This seems entirely
1692 reasonable: after all the message is NOT "waiting for some host".
1693 This is so "obvious" that I'm not sure why it wasn't done
1694 previously. Hope I haven't missed anything, but it can't do any
1695 harm, as the worst effect is to miss an optimization.
1697 (ii) If, despite (i), such a delivery is accidentally attempted, the
1698 routing retry time is respected, so at least it doesn't keep
1699 hammering the server.
1701 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
1702 in ${readsocket because some servers need this prod.
1704 PH/32 Added some extra debug output when updating a wait-xxx database.
1706 PH/33 The hint "could be header name not terminated by colon", which has been
1707 given for certain expansion errors for a long time, was not being given
1708 for the ${if def:h_colon_omitted{... case.
1710 PH/34 The spec says: "With one important exception, whenever a domain list is
1711 being scanned, $domain contains the subject domain." There was at least
1712 one case where this was not true.
1714 PH/35 The error "getsockname() failed: connection reset by peer" was being
1715 written to the panic log as well as the main log, but it isn't really
1716 panic-worthy as it just means the connection died rather early on. I have
1717 removed the panic log writing for the ECONNRESET error when getsockname()
1720 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
1721 runs only) independently of the message's sender address. This meant
1722 that, if the 4xx error was in fact related to the sender, a different
1723 message to the same recipient with a different sender could confuse
1724 things. In particualar, this can happen when sending to a greylisting
1725 server, but other circumstances could also provoke similar problems.
1726 I have changed the default so that the retry time for these errors is now
1727 based a combination of the sender and recipient addresses. This change
1728 can be overridden by setting address_retry_include_sender=false in the
1731 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
1732 remote server are returned as part of bounce messages. This was not
1733 happening for LMTP over a pipe (the lmtp transport), but now it is the
1734 same for both kinds of LMTP.
1736 PH/38 Despite being documented as not happening, Exim was rewriting addresses
1737 in header lines that were in fact CNAMEs. This is no longer the case.
1739 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
1740 and queue runs started by the daemon processed all messages. This has
1741 been fixed so that -R and -S can now usefully be given with -q<time>.
1743 PH/40 Import PCRE release 6.7 (fixes some bugs).
1745 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
1747 PH/42 Give an error if -q is specified more than once.
1749 PH/43 Renamed the variables $interface_address and $interface_port as
1750 $received_ip_address and $received_port, to make it clear that these
1751 values apply to message reception, and not to the outgoing interface when
1752 a message is delivered. (The old names remain recognized, of course.)
1754 PH/44 There was no timeout on the connect() call when using a Unix domain
1755 socket in the ${readsocket expansion. There now is.
1757 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
1758 be meaningful with "accept".
1760 SC/01 Eximstats V1.43
1761 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
1763 SC/02 Eximstats V1.44
1764 Use a glob alias rather than an array ref in the generated
1765 parser. This improves both readability and performance.
1767 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
1768 Collect SpamAssassin and rejection statistics.
1769 Don't display local sender or destination tables unless
1770 there is data to show.
1771 Added average volumes into the top table text output.
1773 SC/04 Eximstats V1.46
1774 Collect data on the number of addresses (recipients)
1775 as well as the number of messages.
1777 SC/05 Eximstats V1.47
1778 Added 'Message too big' to the list of mail rejection
1779 reasons (thanks to Marco Gaiarin).
1781 SC/06 Eximstats V1.48
1782 Mainlog lines which have GMT offsets and are too short to
1783 have a flag are now skipped.
1785 SC/07 Eximstats V1.49 (Alain Williams)
1786 Added the -emptyok flag.
1788 SC/08 Eximstats V1.50
1789 Fixes for obtaining the IP address from reject messages.
1791 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
1792 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
1793 whitesspace changes from 4.64-PH/27
1795 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
1798 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
1799 are found, allow negative numbers in numeric criteria)
1801 JJ/06 exipick.20061117.2, added new $message_body_missing variable
1803 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
1804 to match changes made in 4.64-PH/43
1806 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
1808 PH/47 Put in an explicit test for a DNS lookup of an address record where the
1809 "domain" is actually an IP address, and force a failure. This locks out
1810 those revolvers/nameservers that support "A-for-A" lookups, in
1811 contravention of the specifications.
1813 PH/48 When a host name was looked up from an IP address, and the subsequent
1814 forward lookup of the name timed out, the host name was left in
1815 $sender_host_name, contrary to the specification.
1817 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
1818 restricted to single-key lookups, Exim was not diagnosing an error if
1819 * or *@ was used with a query-style lookup.
1821 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
1823 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
1824 long ago, but noone interested enough thought of it. Let's just say that
1825 the "1.1" means that there are some new functions that weren't there at
1826 some point in the past.
1828 PH/51 Error processing for expansion failure of helo_data from an smtp
1829 transport during callout processing was broken.
1831 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
1832 tested/used via the -bh/-bhc/-bs options.
1834 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
1835 bug, fixed in subsequent PCRE releases).
1837 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
1838 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
1840 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
1846 SC/01 Use a glob alias rather than an array ref in eximstats generated
1847 parser. This improves both readability and performance.
1849 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
1850 Don't display local sender or destination tables in eximstats unless
1851 there is data to show.
1852 Added average volumes into the eximstats top table text output.
1854 SC/03 Collect data on the number of addresses (recipients) as well
1855 as the number of messages in eximstats.
1857 TF/01 Correct an error in the documentation for the redirect router. Exim
1858 does (usually) call initgroups() when daemonizing.
1860 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
1861 with consistent privilege compared to when running as a daemon.
1863 TF/03 Note in the spec that $authenticated_id is not set for local
1864 submissions from trusted users.
1866 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
1867 Thanks to Dean Brooks <dean@iglou.com> for the patch.
1869 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
1870 by adding some example configuration directives to the default
1871 configuration file. A little bit of work is required to uncomment the
1872 directives and define how usernames and passwords are checked, but
1873 there is now a framework to start from.
1875 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
1876 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
1877 without this. I don't know how relevant this is to other LDAP libraries.
1879 PH/02 Add the verb name to the "unknown ACL verb" error.
1881 PH/03 Magnus Holmgren's patch for filter_prepend_home.
1883 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
1885 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
1886 directory not expanded when it should be if an expanded home directory
1887 was set for the address (which is overridden by the transport).
1889 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
1892 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
1893 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
1894 because it is too late at that time, and has no effect.
1896 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
1897 security issue with \' (bugzilla #107). I could not use the
1898 PQescapeStringConn() function, because it needs a PGconn value as one of
1901 PH/08 When testing addresses using -bt, indicate those final addresses that
1902 are duplicates that would not cause an additional delivery. At least one
1903 person was confused, thinking that -bt output corresponded to deliveries.
1904 (Suppressing duplicates isn't a good idea as you lose the information
1905 about possibly different redirections that led to the duplicates.)
1907 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
1908 systems where poll() doesn't work, in particular OS X.
1910 PH/10 Added more information to debugging output for retry time not reached.
1912 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
1913 operations in malware.c.
1915 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
1918 PH/13 If write_rejectlog was set false when logging was sent to syslog with
1919 syslog_duplication set false, log lines that would normally be written
1920 both the the main log and to the reject log were not written to syslog at
1923 PH/14 In the default configuration, change the use of "message" in ACL warn
1924 statements to "add_header".
1926 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
1927 not followed by a command (e.g. "seen endif").
1929 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
1930 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
1933 PH/17 Added extra conditions to the default value of delay_warning_condition
1937 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
1938 { match{$h_precedence:}{(?i)bulk|list|junk} } \
1939 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
1942 The Auto-Submitted: and various List- headers are standardised, whereas I
1943 don't think Precedence: ever was.
1945 PH/18 Refactored debugging code in route_finduser() to show more information,
1946 in particular, the error code if getpwnam() issues one.
1948 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
1949 This is apparently needed in addition to the PH/07 change above to avoid
1950 any possible encoding problems.
1952 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
1953 but not after initializing Perl.
1955 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
1956 output them only if debugging. By default they are written stderr,
1957 apparently, which is not desirable.
1959 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
1962 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
1965 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
1967 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
1968 authenticated or an ident call has been made. Suppress the default
1969 values for $authenticated_id and $authenticated_sender (but permit -oMai
1970 and -oMas) when testing with -bh.
1972 PH/24 Re-jigged the order of the tests in the default configuration so that the
1973 tests for valid domains and recipients precede the DNS black list and CSA
1974 tests, on the grounds that those ones are more expensive.
1976 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
1977 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
1978 This bug exists in every version of Exim that I still have, right back to
1981 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
1982 However, an attempt to turn on case-sensitivity in a regex key by
1983 including (?-i) didn't work because the subject string was already
1984 lowercased, and the effects were non-intuitive. It turns out that a
1985 one-line patch can be used to allow (?-i) to work as expected.
1991 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
1992 other effects) broke the use of negated acl sub-conditions.
1994 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
1997 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
1998 "Deny" causes Exim to reject the incoming connection with a 554 error.
1999 Unfortunately, if there is a major crisis, such as a disk failure,
2000 tcp-wrappers gives "deny", whereas what one would like would be some
2001 kind of temporary error. A kludge has been added to help with this.
2002 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
2003 554 error is used if errno is still zero or contains ENOENT (which occurs
2004 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
2007 PH/03 Add -lutil to the default FreeBSD LIBS setting.
2009 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
2010 errors. Otherwise a message that provokes a temporary error (when other
2011 messages do not) can cause a whole host to time out.
2013 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
2014 addresses were routed directly to files or pipes from a redirect router.
2015 File deliveries just didn't batch; pipe deliveries might have suffered
2018 PH/06 A failure to get a lock for a hints database would erroneously always say
2019 "Failed to get write lock", even when it was really a read lock.
2021 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
2022 of 0600. This has been changed to use the value of the lockfile_mode
2023 option (which defaults to 0600).
2025 PH/08 Applied small patch from the Sieve maintainer.
2027 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
2028 folder from quota calculations, a direct delivery into this folder messed
2029 up the contents of the maildirsize file. This was because the regex was
2030 used only to exclude .Trash (or whatever) when the size of the mailbox
2031 was calculated. There was no check that a delivery was happening into an
2032 excluded directory. This bug has been fixed by ignoring all quota
2033 processing for deliveries into excluded directories.
2035 PH/10 Added the maildirfolder_create_regex option to appendfile.
2041 PH/01 The code for finding all the local interface addresses on a FreeBSD
2042 system running IPv6 was broken. This may well have applied to all BSD
2043 systems, as well as to others that have similar system calls. The broken
2044 code found IPv4 interfaces correctly, but gave incorrect values for the
2045 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
2046 that it would not match correctly against @[] and not recognize the IPv6
2049 PH/02 The ipliteral router was not recognizing addresses of the form user@
2050 [ipv6:....] because it didn't know about the "ipv6:" prefix.
2052 PH/03 Added disable_ipv6.
2054 PH/04 Changed $reply_address to use the raw form of the headers instead of the
2055 decoded form, because it is most often used to construct To: headers
2056 lines in autoreplies, and the decoded form may well be syntactically
2057 invalid. However, $reply_address has leading white space removed, and all
2058 newlines turned into spaces so that the autoreply transport does not
2061 PH/05 If group was specified without a user on a router, and no group or user
2062 was specified on a transport, the group from the router was ignored.
2064 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
2065 for visible compile-time settings that can be used to change these
2066 numbers, for those that want even more. Backwards compatibility with old
2067 spool files has been maintained. However, going back to a previous Exim
2068 release will lost any variables that are in spool files.
2070 PH/07 Two small changes when running in the test harness: increase delay when
2071 passing a TCP/IP connection to a new process, in case the original
2072 process has to generate a bounce, and remove special handling of
2073 127.0.0.2 (sic), which is no longer necessary.
2075 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
2076 be the same on different OS.
2078 PH/09 Moved a debug statement in filter processing to avoid a race problem when
2081 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
2082 whether --show-vars was specified or not
2084 JJ/02 exipick: Added support for new ACL variable spool format introduced
2087 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
2088 syntactically invalid From: or Reply-to: line, and a filter used this to
2089 generate an autoreply, and therefore failed to obtain an address for the
2090 autoreply, Exim could try to deliver to a non-existent relative file
2091 name, causing unrelated and misleading errors. What now happens is that
2092 it logs this as a hard delivery error, but does not attempt to create a
2095 PH/11 The exinext utility has a -C option for testing purposes, but although
2096 the given file was scanned by exinext itself; it wasn't being passed on
2097 when Exim was called.
2099 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
2100 an end-of-file indication when reading a command response.
2102 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
2103 compiled. In many other places in Exim, IPv6 addresses are always
2104 recognized, so I have changed this. It also means that IPv4 domain
2105 literals of the form [IPV4:n.n.n.n] are now always recognized.
2107 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
2108 used if the router is not running as root, for example, when verifying at
2109 ACL time, or when using -bh. The debugging output from this situation was
2110 non-existent - all you got was a failure to exec. I have made two
2113 (a) Failures to set uid/gid, the current directory, or a process leader
2114 in a subprocess such as that created by queryprogram now generate
2115 suitable debugging ouput when -d is set.
2117 (b) The queryprogram router detects when it is not running as root,
2118 outputs suitable debugging information if -d is set, and then runs
2119 the subprocess without attempting to change uid/gid.
2121 PH/15 Minor change to Makefile for building test_host (undocumented testing
2124 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
2125 additional section of a DNS packet that returns MX or SRV records.
2126 Instead, it always explicitly searches for A/AAAA records. This avoids
2127 major problems that occur when a DNS server includes only records of one
2128 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
2129 fixed another bug: if SRV records were looked up and the corresponding
2130 address records were *not* found in the additional section, the port
2131 values from the SRV records were lost.
2133 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
2134 using the correct key (the original address) when searching the retry
2135 rules in order to find which one to use for generating the retry hint.
2137 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
2138 adding the default one. Similarly, if it contains a Reply-To: header, the
2139 errors_reply_to option, if set, is not used.
2141 PH/19 When calculating a retry time, Exim used to measure the "time since
2142 failure" by looking at the "first failed" field in the retry record. Now
2143 it does not use this if it is later than than the arrival time of the
2144 message. Instead it uses the arrival time. This makes for better
2145 behaviour in cases where some deliveries succeed, thus re-setting the
2146 "first failed" field. An example is a quota failure for a huge message
2147 when small messages continue to be delivered. Without this change, the
2148 "time since failure" will always be short, possible causing more frequent
2149 delivery attempts for the huge message than are intended.
2150 [Note: This change was subsequently modified - see PH/04 for 4.62.]
2152 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
2153 $1, $2, $3) because the numerical variables can be reset during some
2154 expansion items (e.g. "match"), thereby losing the authentication data.
2156 PH/21 Make -bV show the size of off_t variables so that the test suite can
2157 decide whether to run tests for quotas > 2G.
2159 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
2160 mailbox_size, and mailbox_filecount in the appendfile transport. If a
2161 filecount value is greater than 2G or if a quota value is greater than 2G
2162 on a system where the size of off_t is not greater than 4, a panic error
2165 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
2166 never match. The debug and -bh output now contains an explicit error
2167 message indicating a malformed IPv4 address or mask.
2169 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
2170 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
2171 PH/23 above applies.
2173 PH/25 Do not write to syslog when running in the test harness. The only
2174 occasion when this arises is a failure to open the main or panic logs
2175 (for which there is an explicit test).
2177 PH/26 Added the /no_tell option to "control=freeze".
2179 PH/27 If a host name lookup failed very early in a connection, for example, if
2180 the IP address matched host_lookup and the reverse lookup yielded a name
2181 that did not have a forward lookup, an error message of the form "no IP
2182 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
2183 could be logged. Now it outputs the IP address instead of "NULL".
2185 PH/28 An enabling patch from MH: add new function child_open_exim2() which
2186 allows the sender and the authenticated sender to be set when
2187 submitting a message from within Exim. Since child_open_exim() is
2188 documented for local_scan(), the new function should be too.
2190 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
2191 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
2192 results in an empty string is now treated as unset.
2194 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
2196 PH/31 Added sender_verify_fail logging option.
2198 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
2199 needed by RFC 822 but not by RFC 2822 was commented out. I have now
2200 tidied the source and removed it altogether.
2202 PH/33 When a queue run was abandoned because the load average was too high, a
2203 log line was always written; now it is written only if the queue_run log
2204 selector is set. In addition, the log line for abandonment now contains
2205 information about the queue run such as the pid. This is always present
2206 in "start" and "stop" lines but was omitted from the "abandon" line.
2208 PH/34 Omit spaces between a header name and the colon in the error message that
2209 is given when verify = headers_syntax fails (if there are lots of them,
2210 the message gets confusing).
2212 PH/35 Change the default for dns_check_names_pattern to allow slashes within
2213 names, as there are now some PTR records that contain slashes. This check
2214 is only to protect against broken name servers that fall over on strange
2215 characters, so the fact that it applies to all lookups doesn't matter.
2217 PH/36 Now that the new test suite is complete, we can remove some of the
2218 special code in Exim that was needed for the old test suite. For example,
2219 sorting DNS records because real resolvers return them in an arbitrary
2220 order. The new test suite's fake resolver always returns records in the
2223 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
2224 bounces) except when queue_only is set, to avoid logging races between
2225 the different processes.
2227 PH/38 Panic-die if .include specifies a non-absolute path.
2229 PH/39 A tweak to the "H" retry rule from its user.
2231 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
2232 a label. They prevented compilation on older perls.
2234 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
2235 a warning to be raised on newish perls.
2237 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
2238 on queue. Changes to match documented behaviour of showing count of
2239 messages matching specified criteria.
2241 PH/40 Changed the default ident timeout from 30s to 5s.
2243 PH/41 Added support for the use of login_cap features, on those BSD systems
2244 that have them, for controlling the resources used by pipe deliveries.
2246 PH/42 The content-scanning code uses fopen() to create files in which to put
2247 message data. Previously it was not paying any attention to the mode of
2248 the files. Exim runs with umask(0) because the rest of the code creates
2249 files with open(), and sets the required mode explicitly. Thus, these
2250 files were ending up world-writeable. This was not a big issue, because,
2251 being within the spool directory, they were not world-accessible. I have
2252 created a function called modefopen, which takes an additional mode
2253 argument. It sets umask(777), creates the file, chmods it to the required
2254 mode, then resets the umask. All the relevant calls to fopen() in the
2255 content scanning code have been changed to use this function.
2257 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
2258 to 24 hours. This avoids potential overflow problems when processing G
2259 and H retry rules. I suspect nobody ever tinkers with this value.
2261 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
2263 PH/45 When the plaintext authenticator is running as a client, the server's
2264 challenges are checked to ensure they are valid base64 strings. By
2265 default, the authentication attempt is cancelled if an invalid string is
2266 received. Setting client_ignore_invalid_base64 true ignores these errors.
2267 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
2268 they are received. Thus, the responses can be made to depend on the
2269 challenges. If an invalid string is ignored, an empty string is placed in
2272 PH/46 Messages that are created by the autoreply transport now contains a
2273 References: header, in accordance with RFCs 2822 and 3834.
2275 PH/47 Added authenticated_sender_force to the smtp transport.
2277 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
2279 PH/49 Installed latest patch from the Sieve maintainer.
2281 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
2282 was also set, the appendfile transport was unnecessarily scanning a
2283 directory of message files (e.g. for maildir delivery) to find the count
2284 of files (along with the size), even though it did not need this
2285 information. It now does the scan only if it needs to find either the
2286 size of the count of files.
2288 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
2290 PH/52 Two bugs concerned with error handling when the smtp transport is
2293 (i) Exim was not creating retry information for temporary errors given
2294 for individual recipients after the DATA command when the smtp transport
2295 was used in LMTP mode. This meant that they could be retried too
2296 frequently, and not timed out correctly.
2298 (ii) Exim was setting the flag that allows error details to be returned
2299 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2300 recipients that were returned after the DATA command.
2302 PH/53 This is related to PH/52, but is more general: for any failing address,
2303 when detailed error information was permitted to be returned to the
2304 sender, but the error was temporary, then after the final timeout, only
2305 "retry timeout exceeded" was returned. Now it returns the full error as
2306 well as "retry timeout exceeded".
2308 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2309 do this, and (what is worse) MTAs that accept it.
2311 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2312 will now be deprecated.
2314 PH/56 New os.c-cygwin from the Cygwin maintainer.
2316 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2317 formats (previously only available in exim formats via -bpr, -bpru,
2318 and -bpra. Now also available in native and exiqgrep formats)
2320 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2321 with very large, slow to parse queues
2323 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2325 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2327 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2328 responses to authentication challenges, though it was showing the
2329 challenges; (ii) I've removed the CR characters from the debug output for
2332 PH/58 Allow for the insertion of a newline as well as a space when a string
2333 is turned into more than one encoded-word during RFC 2047 encoding. The
2334 Sieve code now uses this.
2336 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2337 data_4xx, lost_connection, tls_required.
2339 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2340 message was being sent as an SMTP response.
2342 PH/61 Add -l and -k options to exicyclog.
2344 PH/62 When verifying, if an address was redirected to one new address, so that
2345 verification continued, and the new address failed or deferred after
2346 having set something in $address_data, the value of $address_data was not
2347 passed back to the ACL. This was different to the case when no
2348 redirection occurred. The value is now passed back in both cases.
2350 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2351 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2352 use login_cap.h, so on its own it isn't the distinguishing feature. The
2353 new name refers directly to the setclassresources() function.
2355 PH/65 Added configuration files for NetBSD3.
2357 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2359 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2360 is preferred over IPv4.
2362 PH/68 The bounce_return_message and bounce_return_body options were not being
2363 honoured for bounces generated during the reception of non-SMTP messages.
2364 In particular, this applied to messages rejected by the ACL. This bug has
2365 been fixed. However, if bounce_return_message is true and bounce_return_
2366 body is false, the headers that are returned for a non-SMTP message
2367 include only those that have been read before the error was detected.
2368 (In the case of an ACL rejection, they have all been read.)
2370 PH/69 The HTML version of the specification is now built in a directory called
2371 spec_html instead of spec.html, because the latter looks like a path with
2372 a MIME-type, and this confuses some software.
2374 PH/70 Catch two compiler warnings in sieve.c.
2376 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2377 function verify_get_ident() calls ip_connect() to connect a socket, but
2378 if the "connect()" function timed out, ip_connect() used to close the
2379 socket. However, verify_get_ident() also closes the socket later, and in
2380 between Exim writes to the log, which may get opened at this point. When
2381 the socket was closed in ip_connect(), the log could get the same file
2382 descriptor number as the socket. This naturally causes chaos. The fix is
2383 not to close the socket in ip_connect(); the socket should be closed by
2384 the function that creates it. There was only one place in the code where
2385 this was missing, in the iplookup router, which I don't think anybody now
2386 uses, but I've fixed it anyway.
2388 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2389 well as to direct DNS lookups. Otherwise the handling of names in host
2390 lists is inconsistent and therefore confusing.
2396 PH/01 Two changes to the default runtime configuration:
2398 (1) Move the checks for relay_from_hosts and authenticated clients from
2399 after to before the (commented out) DNS black list checks.
2401 (2) Add control=submission to the relay_from_hosts and authenticated
2402 clients checks, on the grounds that messages accepted by these
2403 statements are most likely to be submissions.
2405 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2407 (1) Generate an error if the third argument for the ${prvs expansion is
2410 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2413 (3) Reset the variables that are obtained from the first argument of
2414 ${prvscheck and used in the second argument before leaving the code,
2415 because their memory is reclaimed, so using them afterwards may do
2418 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2419 one (it's much easier than Tom thought :-).
2421 (5) Because of (4), we can now allow for the use of $prvscheck_result
2422 inside the third argument.
2424 PH/03 For some reason, the default setting of PATH when running a command from
2425 a pipe transport was just "/usr/bin". I have changed it to
2428 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2429 anything to be listed in the output from -bV.
2431 PH/05 When a filter generated an autoreply, the entire To: header line was
2432 quoted in the delivery log line, like this:
2434 => >A.N.Other <ano@some.domain> <original@ddress> ...
2436 This has been changed so that it extracts the operative address. There
2437 may be more than one such address. If so, they are comma-separated, like
2440 => >ano@some.domain,ona@other.domain <original@ddress> ...
2442 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2443 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2444 not being looked up in the rDNS to get a host name, Exim was showing the
2445 IP address twice in Received: lines, even though the IP addresses were
2446 identical. For example:
2448 Received: from [1.2.3.4] (helo=[1.2.3.4])
2450 However, if the real host name was known, it was omitting the HELO data
2451 if it matched the actual IP address. This has been tidied up so that it
2452 doesn't show the same IP address twice.
2454 PH/07 When both +timestamp and +memory debugging was on, the value given by
2455 $tod_xxx expansions could be wrong, because the tod_stamp() function was
2456 called by the debug printing, thereby overwriting the timestamp buffer.
2457 Debugging no longer uses the tod_stamp() function when +timestamp is set.
2459 PH/08 When the original message was included in an autoreply transport, it
2460 always said "this is a copy of the message, including all the headers",
2461 even if body_only or headers_only was set. It now gives an appropriate
2464 PH/09 Applied a patch from the Sieve maintainer which:
2466 o fixes some comments
2467 o adds the (disabled) notify extension core
2468 o adds some debug output for the result of if/elsif tests
2469 o points to the current vacation draft in the documentation
2470 and documents the missing references header update
2474 o fixes a bug in processing the envelope test (when testing
2475 multiple envelope elements, the last element determinted the
2478 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
2479 Electronic Mail") by including:
2481 Auto-submitted: auto-generated
2483 in the messages that it generates (bounce messages and others, such as
2484 warnings). In the case of bounce messages for non-SMTP mesages, there was
2485 also a typo: it was using "Auto_submitted" (underscore instead of
2486 hyphen). Since every message generated by Exim is necessarily in response
2487 to another message, thes have all been changed to:
2489 Auto-Submitted: auto-replied
2491 in accordance with these statements in the RFC:
2493 The auto-replied keyword:
2495 - SHOULD be used on messages sent in direct response to another
2496 message by an automatic process,
2498 - MUST NOT be used on manually-generated messages,
2500 - MAY be used on Delivery Status Notifications (DSNs) and Message
2501 Disposition Notifications (MDNs),
2503 - MUST NOT be used on messages generated by automatic or periodic
2504 processes, except for messages which are automatic responses to
2507 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
2508 to the default Received: header definition.
2510 PH/12 Added log selector acl_warn_skipped (default on).
2512 PH/13 After a successful wildlsearch lookup, discard the values of numeric
2513 variables because (a) they are in the wrong storage pool and (b) even if
2514 they were copied, it wouldn't work properly because of the caching.
2516 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
2517 checking when decoding. Apparently there are clients that generate
2518 overlong encoded strings. Why am I not surprised?
2520 PH/15 If the first argument of "${if match_address" was not empty, but did not
2521 contain an "@" character, Exim crashed. Now it writes a panic log message
2522 and treats the condition as false.
2524 PH/16 In autoreply, treat an empty string for "once" the same as unset.
2526 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
2527 extension "envelope-auth". The code is finished and in agreement with
2528 other implementations, but there is no documentation so far and in fact,
2529 nobody wrote the draft yet. This extension is currently #undef'ed, thus
2530 not changing the active code.
2532 Print executed "if" and "elsif" statements when debugging is used. This
2533 helps a great deal to understand what a filter does.
2535 Document more things not specified clearly in RFC3028. I had all this
2536 sorted out, when out of a sudden new issues came to my mind. Oops."
2538 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
2541 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
2542 canonical form (as documented). However, after a host name lookup from
2543 the IP address, check_host() was doing a simple string comparison with
2544 addresses acquired from the DNS when checking that the found name did
2545 have the original IP as one of its addresses. Since any found IPv6
2546 addresses are likely to be in abbreviated form, the comparison could
2547 fail. Luckily, there already exists a function for doing the comparison
2548 by converting both addresses to binary, so now that is used instead of
2549 the text comparison.
2551 PH/20 There was another similar case to PH/19, when a complete host name was
2552 given in a host list; looking up its IP address could give an abbreviated
2553 form, whereas the current host's name might or might not be abbreviated.
2554 The same fix has been applied.
2560 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
2561 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
2564 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
2565 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
2567 PH/03 Typo: missing ".o" in src/pcre/Makefile.
2569 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
2570 header line, restrict the check to what is listed in RFCs 2369 and 2929.
2571 Also, for "Auto-Submitted", treat anything other than "no" as
2572 non-personal, in accordance with RFC 3834. (Previously it treated
2573 anything starting "auto-" as non-personal.)
2575 TF/01 The control=submission/name=... option had a problem with syntax
2576 errors if the name included a slash character. The /name= option
2577 now slurps the rest of the string, so it can include any characters
2578 but it must come last in the list of options (after /sender_retain
2581 PH/05 Some modifications to the interface to the fake nameserver for the new
2589 TK/01 Added the "success_on_redirect" address verification option. See
2590 NewStuff for rationale and an example.
2592 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
2594 PH/02 Patch to exigrep to allow it to work on syslog lines.
2596 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
2597 fread() to skip over the body file's header line, because in Cygwin the
2598 header line is locked and is inaccessible.
2600 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
2601 co-exist for some time) to make it clear that it is the Exim ID that is
2602 referenced, not the Message-ID: header line.
2604 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
2605 string_format() function, because snprintf() does not exist on all
2608 PH/06 The use of forbid_filter_existstest now also locks out the use of the
2609 ${stat: expansion item.
2611 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
2612 protocol synchronization error", to keep the pedants happy.
2614 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
2615 well as for IRIX systems, when gcc is being used. See the host.c source
2618 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
2620 PH/10 Named domain lists were not working if used in a queue_smtp_domains
2623 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
2624 transport and to the smtp transport in LMTP mode.
2626 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
2628 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
2629 run a filter in a subprocess. This could lead to confusion in subsequent
2630 lookups in the parent process. There should also be a search_tidyup() at
2631 the end of the subprocess.
2633 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
2634 only if the host matched helo_try_verify_hosts, which caused the
2635 verification to occur when the EHLO/HELO command was issued. The ACL just
2636 tested the remembered result. Now, if a previous verification attempt has
2637 not happened, "verify = helo" does it there and then.
2639 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
2641 TK/03 Fix log output including CR from clamd.
2643 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
2644 exist provoked a memory error which could cause a segfault.
2646 PH/15 Installed PCRE 6.2
2648 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
2650 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
2651 of the problem. Specifically, suggested +O2 rather than +O1 for the
2654 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
2656 PH/20 If a delivery was routed to a non-standard port by means of an SRV
2657 record, the port was not correctly logged when the outgoing_port log
2658 selector was set (it logged the transort's default port).
2660 PH/21 Added support for host-specific ports to manualroute, queryprogram,
2661 fallback_hosts, and "hosts" in the smtp transport.
2663 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
2664 host errors such as "Connection refused".
2666 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
2667 authentication with radiusclient 0.4.9:
2669 - Error returned from rc_read_config was caught wrongly
2670 - Username/password not passed on to radius server due to wrong length.
2672 The presumption is that some radiusclient API changes for 4.51/PH/17
2673 were not taken care of correctly. The code is still untested by me (my
2674 Linux distribution still has 0.3.2 of radiusclient), but it was
2675 contributed by a Radius user.
2677 PH/24 When doing a callout, the value of $domain wasn't set correctly when
2678 expanding the "port" option of the smtp transport.
2680 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
2681 while reading a MIME header. Thanks to Tom Hughes for a patch.
2683 PH/24 Include config.h inside local_scan.h so that configuration settings are
2686 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
2687 that in an ACL for RCPT (for example), you can examine exactly what was
2690 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
2691 commands, but it was not correctly comparing the address with the actual
2692 client host address. Thus, it would show the EHLO address in Received:
2693 header lines when this was not necessary.
2695 PH/27 Added the % operator to ${eval:}.
2697 PH/28 Exim tries to create and chdir to its spool directory when it starts;
2698 it should be ignoring failures (because with -C, for example, it has lost
2699 privilege). It wasn't ignoring creation failures other than "already
2702 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
2705 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
2706 because an input line was too long, either on its own, or by virtue of
2707 too many continuations, the temporary file was not being removed, and the
2708 return code was incorrect.
2710 PH/31 Missing "BOOL" in function definition in filtertest.c.
2712 PH/32 Applied Sieve patches from the maintainer.
2714 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
2716 PH/33 Added "verify = not_blind".
2718 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
2719 Local/Makefile (with some defaults set). These are used in built scripts
2720 such as exicyclog, but they have never been used in the exim_install
2721 script (though there are many overriding facilities there). I have
2722 arranged that the exim_install script now takes note of these two
2725 PH/35 Installed configuration files for Dragonfly.
2727 PH/36 When a locally submitted message by a trusted user did not contain a
2728 From: header, and the sender address was obtained from -f or from an SMTP
2729 MAIL command, and the trusted user did not use -F to supply a sender
2730 name, $originator_name was incorrectly used when constructing a From:
2731 header. Furthermore, $originator_name was used for submission mode
2732 messages from external hosts without From: headers in a similar way,
2733 which is clearly wrong.
2735 PH/37 Added control=suppress_local_fixups.
2737 PH/38 When log_selector = +received_sender was set, and the addition of the
2738 sender made the log line's construction buffer exactly full, or one byte
2739 less than full, an overflow happened when the terminating "\n" was
2742 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
2743 when the result of a list match is failure because a DNS lookup failed.
2745 PH/40 RM_COMMAND is now used in the building process.
2747 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
2748 the "build-* directories that it finds.
2750 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
2751 address in a domain literal was a prefix of an interface address.
2753 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
2754 when verifying a sender address, unless rewrite_headers is false.
2756 PH/44 Wrote a long comment about why errors_to addresses are verified as
2757 recipients, not senders.
2759 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
2760 the ratelimit ACL was added.
2762 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
2764 PH/46 Added extra information about PostgreSQL errors to the error string.
2766 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
2767 avoiding the need to install special zones in a real server. This is
2768 backwards compatible; if it can't find the fake resolver, it drops back.
2769 Thus, both old and new test suites can be run.
2771 TF/02 Added util/ratelimit.pl
2773 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
2774 clock is set back in time.
2776 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
2777 Candler <B.Candler@pobox.com>.
2779 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
2780 OK for addresses that are the result of redirections.
2782 PH/48 A number of further additions for the benefit of the new test suite,
2783 including a fake gethostbyname() that interfaces to the fake DNS resolver
2786 TF/06 The fix for widen_domains has also been applied to qualify_single and
2787 search_parents which are the other dnslookup options that can cause
2790 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
2793 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
2795 TF/07 Exim produced the error message "an SRV record indicated no SMTP
2796 service" if it encountered an MX record with an empty target hostname.
2797 The message is now "an MX or SRV record indicated no SMTP service".
2799 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
2800 if the DNS of the sending site is misconfigured. This is quite a
2801 common situation. This change restores the behaviour of treating a
2802 helo verification defer as a failure.
2804 PH/51 If self=fail was set on a router, the bounce message did not include the
2805 actual error message.
2811 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
2813 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
2814 command itself ended in error, the underlying message about the transport
2815 filter timeout was being overwritten with the pipe command error. Now the
2816 underlying error message should be appended to the second error message.
2818 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
2820 PH/02 Reduce the amount of output that "make" produces by default. Full output
2821 can still be requested.
2823 PH/03 The warning log line about a condition test deferring for a "warn" verb
2824 was being output only once per connection, rather than after each
2825 occurrence (because it was using the same function as for successful
2826 "warn" verbs). This seems wrong, so I have changed it.
2828 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
2829 it should not have, which might have caused a crash in the right
2830 circumstances, but probably never did.
2832 PH/04 Installed a modified version of Tony Finch's patch to make submission
2833 mode fix the return path as well as the Sender: header line, and to
2834 add a /name= option so that you can make the user's friendly name appear
2837 TF/03 Added the control = fakedefer ACL modifier.
2839 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
2840 Mark Lowes for thorough testing.
2842 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
2844 TK/03 Merged latest SRS patch from Miles Wilton.
2846 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
2847 with the definition in sysexits.h (which is #included earlier).
2848 Fortunately, Exim does not actually use EX_OK. The code used to try to
2849 preserve the sysexits.h value, by assumimg that macro definitions were
2850 scanned for macro replacements. I have been disabused of this notion,
2851 so now the code just undefines EX_OK before #including unistd.h.
2853 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
2854 in the smtp transport. When a block could not be written in a single
2855 write() function, the timeout was being re-applied to each part-write.
2856 This seems wrong - if the receiver was accepting one byte at a time it
2857 would take for ever. The timeout is now adjusted when this happens. It
2858 doesn't have to be particularly precise.
2860 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
2861 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
2863 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
2864 without a domain if the check to <postmaster@domain> fails.
2866 SC/01 Eximstats: added -xls and the ability to specify output files
2867 (patch written by Frank Heydlauf).
2869 SC/02 Eximstats: use FileHandles for outputing results.
2871 SC/03 Eximstats: allow any combination of xls, txt, and html output.
2873 SC/04 Eximstats: fixed display of large numbers with -nvr option
2875 SC/05 Eximstats: fixed merging of reports with empty tables.
2877 SC/06 Eximstats: added the -include_original_destination flag
2879 SC/07 Eximstats: removed tabs and trailing whitespace.
2881 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
2883 TK/06 MBOX spool code: Add real "From " MBOX separator line
2884 so the .eml file is really in mbox format (even though
2885 most programs do not really care). Patch from Alex Miller.
2887 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
2888 The latter is generated from $received_to and is only set if the
2889 message has one envelope recipient. SA can use these headers,
2890 obviously out-of-the-box. Patch from Alex Miller.
2892 PH/08 The ${def test on a variable was returning false if the variable's
2893 value was "0", contrary to what the specification has always said!
2894 The result should be true unless the variable is empty.
2896 PH/09 The syntax error of a character other than { following "${if
2897 def:variable_name" (after optional whitespace) was not being diagnosed.
2898 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
2899 accidental colon was present, for example, could give incorrect results.
2901 PH/10 Tidied the code in a number of places where the st_size field of a stat()
2902 result is used (not including appendfile, where other changes are about
2905 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
2906 This involved changing a lot of size variables from int to off_t. It
2907 should work with maildirs and everything.
2909 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
2910 spamd dying while we are connected to it.
2912 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
2915 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
2916 function for BDB 4.3.
2918 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
2920 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
2921 the sources for PCRE have been re-arranged and more files are now
2924 PH/15 The code I had for printing potentially long long variables in PH/11
2925 above was not the best (it lost precision). The length of off_t variables
2926 is now inspected at build time, and an appropriate printing format (%ld
2927 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
2928 to be "long long int" or "long int". This is needed for the internal
2929 formatting function string_vformat().
2931 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
2932 the configuration file to be ":syslog", then the script "guesses" where
2933 the logs files are, rather than using the compiled in default. In our
2934 case the guess is not the same as the compiled default, so the script
2935 suddenly stopped working when I started to use syslog. The patch checks
2936 to see if log_file_path is "". If so, it attempts to read it from exim
2937 with no configuration file to get the compiled in version, before it
2938 falls back to the previous guessing code."
2940 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
2941 implementing BATV in an Exim configuration. See NewStuff for the gory
2944 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
2945 Makefile that are specific to HP-UX.
2947 PH/18 If the "use_postmaster" option was set for a recipient callout together
2948 with the "random" option, the postmaster address was used as the MAIL
2949 FROM address for the random test, but not for the subsequent recipient
2950 test. It is now used for both.
2952 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
2953 patch removes a few documentation additions to RFC 3028, because the
2954 latest draft now contains them. It adds the new en;ascii-case comparator
2955 and a new error check for 8bit text in MIME parts. Comparator and
2956 require names are now matched exactly. I enabled the subaddress
2957 extension, but it is not well tested yet (read: it works for me)."
2959 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
2960 rework some of the code of TK/09 above to avoid the hardwired use of
2961 "%lld" and "long long". Replaced the call to snprintf() with a call to
2964 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
2965 records point to non-existent hosts", "retry timeout exceeded", and
2966 "retry time not reached for any host after a long failure period".
2968 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
2969 experimental DomainKeys support:
2971 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
2972 (2) On an error such as an illegally used "control", the wrong name for
2973 the control was given.
2975 These problems did NOT occur unless DomainKeys support was compiled.
2977 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
2979 PH/24 Added ${if match_ip condition.
2981 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
2982 databases so that it will be absolutely obvious if a crash occurs in the
2983 DB library. This is a regular occurrence (often caused by mis-matched
2986 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
2987 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
2988 picked up on a user's system that detects such things. There doesn't seem
2989 to be a gcc warning option for this - only an attribute that has to be
2990 put on the function's prototype. It seems that in Fedora Core 4 they have
2991 set this on a number of new functions. No doubt there will be more in due
2994 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
2995 specify a transport. However, if an address that was verified by such a
2996 router was the subject of a callout, Exim crashed because it tried to
2997 read the rcpt_include_affixes from the non-existent transport. Now it
2998 just assumes that the setting of that option is false. This bug was
2999 introduced by 4.51/PH/31.
3001 PH/28 Changed -d+all to exclude +memory, because that information is very
3002 rarely of interest, but it makes the output a lot bigger. People tend to
3003 do -d+all out of habit.
3005 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
3006 code in os-type was giving problems when libc.so lives in lib64, like on
3009 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
3010 aren't the modern standard, and it seems that some systems' include files
3011 don't always have them. Exim was already checking for some of the newer
3012 ones like T_AAAA, and defining it itself. I've added checks for all the
3013 record types that Exim uses.
3015 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
3016 not automatically generating a new one, as it is supposed to. This
3017 prevented TLS from working. If the file did exist, but contained invalid
3018 data, a new version was generated, as expected. It was only the case of a
3019 non-existent file that was broken.
3021 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
3022 with a change in libdomainkeys > 0.64.
3024 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
3025 from DNS. If the selector record carries the flag, it now has
3026 precedence over the domain-wide flag.
3028 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
3030 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
3031 the use of a port name that isn't defined in /etc/services) occurred, the
3032 message was deferred as in a normal delivery, and thus remained on the
3033 spool, instead of being failed because of the mua_wrapper setting. This
3034 is now fixed, and I tidied up some of the mua_wrapper messages at the
3037 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
3038 the messages in a hash of arrays rather than using individual hashes.
3039 This is a bit cleaner and results in dramatic memory savings, albeit
3040 at a slight CPU cost.
3042 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
3043 as requested by Marc Sherman.
3045 SC/10 Eximstats: added histograms for user specified patterns as requested
3048 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
3050 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
3051 fopen() in the content-scanning modules that did not already have it.
3057 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
3058 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
3060 TK/02 Fix ACL "control" statement not being available in MIME ACL.
3062 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
3064 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
3065 to test Sieve filters that use "vacation".
3067 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
3068 that changes the way the GnuTLS parameters are stored in the cache file.
3069 The new format can be generated externally. For backward compatibility,
3070 if the data in the cache doesn't make sense, Exim assumes it has read an
3071 old-format file, and it generates new data and writes a new file. This
3072 means that you can't go back to an older release without removing the
3075 PH/03 A redirect router that has both "unseen" and "one_time" set does not
3076 work if there are any delivery delays because "one_time" forces the
3077 parent to be marked "delivered", so its unseen clone is never tried
3078 again. For this reason, Exim now forbids the simultaneous setting of
3081 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
3082 redirected to themselves ("homonym" addresses). Read the long ChangeLog
3083 entry if you want to know the details. The fix, however, neglected to
3084 consider the case when local delivery batching is involved. The test for
3085 "previously delivered" was not happening when checking to see if an
3086 address could be batched with a previous (undelivered) one; under
3087 certain circumstances this could lead to multiple deliveries to the same
3090 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
3091 in its include files, and this causes problems building Exim.
3093 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
3094 header_syntax) but Exim was just ignoring anything given after a slash.
3095 In particular, this caused confusion with an attempt to use "verify =
3096 reverse_host_lookup/defer_ok". An error is now given when options are
3097 supplied for verify items that do not have them. (Maybe reverse_host_
3098 lookup should have a defer_ok option, but that's a different point.)
3100 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
3101 defined by RFC 821) to 2048, because there were problems with some AUTH
3102 commands, and RFC 1869 says the size should be increased for extended
3103 SMTP commands that take arguments.
3105 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
3108 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
3109 "unknown" error; now it says that the functionality isn't in the binary.
3111 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
3112 an address' error message when a string expansion fails (syntax or
3113 whatever). Otherwise the password may appear in the log. Following change
3114 PH/42 below, there is no longer a chance of it appearing in a bounce
3117 PH/11 Installed exipick version 20050225.0 from John Jetmore.
3119 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
3120 of its addresses was ever tried. (Bugzilla bug #2.)
3122 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
3123 the result incorrectly in the debug output. (It correctly added a newline
3124 to what was transported.)
3126 TF/01 Added $received_time.
3128 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
3129 commented out examples of how to interface to a virus scanner and to
3130 SpamAssassin. Also added commented examples of av_scanner and
3131 spamd_address settings.
3133 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
3134 and controls are allowed in which ACLs. There were a couple of minor
3135 errors. Some of the entries in the conditions table (which is a table of
3136 where they are NOT allowed) were getting very unwieldy; rewrote them as a
3137 negation of where the condition IS allowed.
3139 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
3141 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
3142 header file does not have a version number, so I've had to invent a new
3143 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
3144 API. The code is untested by me (my Linux distribution still has 0.3.2 of
3145 radiusclient), but it was contributed by a Radius user.
3147 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
3148 files or directories, for OpenSSL.
3150 PH/19 When an Exim process that is running as root has to create an Exim log
3151 file, it does so in a subprocess that runs as exim:exim so as to get the
3152 ownership right at creation (otherwise, other Exim processes might see
3153 the file with the wrong ownership). There was no test for failure of this
3154 fork() call, which would lead to the process getting stuck as it waited
3155 for a non-existent subprocess. Forks do occasionally fail when resources
3156 run out. I reviewed all the other calls to fork(); they all seem to check
3159 PH/20 When checking for unexpected SMTP input at connect time (before writing
3160 the banner), Exim was not dealing correctly with a non-positive return
3161 from the read() function. If the client had disconnected by this time,
3162 the result was a log entry for a synchronization error with an empty
3163 string after "input=" when read() returned zero. If read() returned -1
3164 (an event I could not check), uninitialized data bytes were printed.
3165 There were reports of junk text (parts of files, etc) appearing after
3168 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
3170 PH/22 Added support for macro redefinition, and (re)definition in between
3171 driver and ACL definitions.
3173 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
3174 forgetting to use the resulting value; it was using the unexpanded value.
3176 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
3177 hadn't been configured. The fix is from Juergen Kreileder, who
3178 understands it better than I do:
3180 "Here's what I see happening with three configured cyrus_sasl
3181 authenticators configured (plain, login, cram-md5):
3183 On startup auth_cyrus_sasl_init() gets called for each of these.
3184 This means three calls to sasl_listmech() without a specified mech_list.
3185 => SASL tests which mechs of all available mechs actually work
3186 => three warnings about OTP not working
3187 => the returned list contains: plain, login, cram-md5, digest-md5, ...
3189 With the patch, sasl_listmech() also gets called three times. But now
3190 SASL's mech_list option is set to the server_mech specified in the the
3191 authenticator. Or in other words, the answer from sasl_listmech()
3192 gets limited to just the mech you're testing for (which is different
3194 => the return list contains just 'plain' or 'login', 'cram-md5' or
3195 nothing depending on the value of ob->server_mech.
3197 I've just tested the patch: Authentication still works fine,
3198 unavailable mechs specified in the exim configuration are still
3199 caught, and the auth.log warnings about OTP are gone."
3201 PH/25 When debugging is enabled, the contents of the command line are added
3202 to the debugging output, even when log_selector=+arguments is not
3205 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
3206 answer is "GNU", and only if the return is "GNU/something" is the answer
3209 PH/27 $acl_verify_message is now set immediately after the failure of a
3210 verification in an ACL, and so is available in subsequent modifiers. In
3211 particular, the message can be preserved by coding like this:
3213 warn !verify = sender
3214 set acl_m0 = $acl_verify_message
3216 Previously, $acl_verify_message was set only while expanding "message"
3217 and "log_message" when a very denied access.
3219 PH/28 Modified OS/os.c-Linux with
3221 -#ifndef OS_LOAD_AVERAGE
3222 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
3224 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
3225 nomenclature these days.)
3227 PH/29 Installed patch from the Sieve maintainer that adds the options
3228 sieve_useraddress and sieve_subaddress to the redirect router.
3230 PH/30 In these circumstances:
3231 . Two addresses routed to the same list of hosts;
3232 . First host does not offer TLS;
3233 . First host accepts first address;
3234 . First host gives temporary error to second address;
3235 . Second host offers TLS and a TLS session is established;
3236 . Second host accepts second address.
3237 Exim incorrectly logged both deliveries with the TLS parameters (cipher
3238 and peerdn, if requested) that were in fact used only for the second
3241 PH/31 When doing a callout as part of verifying an address, Exim was not paying
3242 attention to any local part prefix or suffix that was matched by the
3243 router that accepted the address. It now behaves in the same way as it
3244 does for delivery: the affixes are removed from the local part unless
3245 rcpt_include_affixes is set on the transport.
3247 PH/32 Add the sender address, as F=<...>, to the log line when logging a
3248 timeout during the DATA phase of an incoming message.
3250 PH/33 Sieve envelope tests were broken for match types other than :is. I have
3251 applied a patch sanctioned by the Sieve maintainer.
3253 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
3254 the uid or gid is negative. A case of a negative gid caused this to be
3255 noticed. The fix allows for either to be negative.
3257 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
3258 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
3261 PH/36 The change PH/12 above was broken. Fixed it.
3263 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
3264 the grounds that routing the same address twice would always produce the
3265 same answer. This might have been true once, but it is certainly no
3266 longer true now. Routing a child address may depend on the previous
3267 routing that produced that child. Some complicated redirection strategies
3268 went wrong when messages had multiple recipients, and made Exim's
3269 behaviour dependent on the order in which the addresses were given.
3271 I have moved the duplicate checking until after the routing is complete.
3272 Exim scans the addresses that are assigned to local and remote
3273 transports, and removes any duplicates. This means that more work will be
3274 done, as duplicates will always all be routed, but duplicates are
3275 presumably rare, so I don't expect this is of any significance.
3277 For deliveries to pipes, files, and autoreplies, the duplicate checking
3278 still happens during the routing process, since they are not going to be
3281 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
3282 It corrects a timeout issue with spamd. This is Ian's comment: "The
3283 background is that sometimes spamd either never reads data from a
3284 connection it has accepted, or it never writes response data. The exiscan
3285 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
3286 blindly assumes that writes won't block so it may never time out."
3288 PH/39 Allow G after quota size as well as K and M.
3290 PH/40 The value set for $authenticated_id in an authenticator may not contain
3291 binary zeroes or newlines because the value is written to log lines and
3292 to spool files. There was no check on this. Now the value is run through
3293 the string_printing() function so that such characters are converted to
3294 printable escape sequences.
3296 PH/41 $message_linecount is a new variable that contains the total number of
3297 lines in the message. Compare $body_linecount, which is the count for the
3300 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3301 bounce and delay warning messages, except in certain special cases, which
3304 (a) An SMTP error message from a remote host;
3305 (b) A message specified in a :fail: redirection;
3306 (c) A message specified in a "fail" command in a system filter;
3307 (d) A message specified in a FAIL return from the queryprogram router;
3308 (e) A message specified by the cannot_route_message router option.
3310 In these cases only, Exim does include the error details in bounce and
3311 warning messages. There are also a few cases where bland messages such
3312 as "unrouteable address" or "local delivery error" are given.
3314 PH/43 $value is now also set for the "else" part of a ${run expansion.
3316 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3317 being worked on, but at least Exim now implements the latest version to
3320 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3321 process to complete was treated as a delivery failure, a timeout while
3322 writing the message to the pipe was logged, but erroneously treated as a
3323 successful delivery. Such timeouts include transport filter timeouts. For
3324 consistency with the overall process timeout, these timeouts are now
3325 treated as errors, giving rise to delivery failures by default. However,
3326 there is now a new Boolean option for the pipe transport called
3327 timeout_defer, which, if set TRUE, converts the failures into defers for
3328 both kinds of timeout. A transport filter timeout is now identified in
3331 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3332 systems where "make" and "gmake" are different, calling "gmake" at top
3333 level broke things. I've arranged for the value of $(MAKE) to be passed
3334 from the Makefile to this script so that it can call the same version of
3338 A note about Exim versions 4.44 and 4.50
3339 ----------------------------------------
3341 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3342 changes of various kinds. As a consequence, a big documentation update was
3343 needed. This delayed the release for rather longer than seemed good, especially
3344 in the light of a couple of (minor) security issues. Therefore, the changes
3345 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3346 release. So 4.44 and 4.50 are in effect two different branches that both start
3349 I have left the 4.50 change log unchanged; it contains all the changes since
3350 4.43. The change log for 4.44 is below; many of its items are identical to
3351 those for 4.50. This seems to be the most sensible way to preserve the
3352 historical information.
3358 1. Minor wording change to the doc/README.SIEVE file.
3360 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3361 computation of the current number of files was incorrect.
3363 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3364 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3367 4. Give more explanation in the error message when the command for a transport
3368 filter fails to execute.
3370 5. There are several places where Exim runs a non-Exim command in a
3371 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3372 was being done only for the command run by the queryprogram router. It is
3373 now done for all such subprocesses. The other cases are: ${run, transport
3374 filters, and the commands run by the lmtp and pipe transports.
3376 6. Added CONFIGURE_GROUP build-time option.
3378 7. Some older OS have a limit of 256 on the maximum number of file
3379 descriptors. Exim was using setrlimit() to set 1000 as a large value
3380 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3381 systems. I've change it so that if it can't get 1000, it tries for 256.
3383 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3384 was an oversight, and furthermore, ever since the addition of extra
3385 controls (e.g. 4.43/32), the checks on when to allow different forms of
3386 "control" were broken. There should now be diagnostics for all cases when a
3387 control that does not make sense is encountered.
3389 9. Added the /retain_sender option to "control=submission".
3391 10. $recipients is now available in the predata ACL (oversight).
3393 11. Tidy the search cache before the fork to do a delivery from a message
3394 received from the command line. Otherwise the child will trigger a lookup
3395 failure and thereby defer the delivery if it tries to use (for example) a
3396 cached ldap connection that the parent has called unbind on.
3398 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3399 of $address_data from the recipient verification was clobbered by the
3400 sender verification.
3402 13. The value of address_data from a sender verification is now available in
3403 $sender_address_data in subsequent conditions in the ACL statement.
3405 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3407 15. Added a new option "connect=<time>" to callout options, to set a different
3410 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3411 was its contents. (It was OK if the option was not defined at all.)
3413 17. A "Completed" log line is now written for messages that are removed from
3414 the spool by the -Mrm option.
3416 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3417 information about exactly what failed.
3419 19. Added -dd to debug only the daemon process.
3421 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3422 handles timeouts, both on the server side and network timeouts. Renamed the
3423 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3425 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3426 It is now set to "smtps".
3428 22. $host_address is now set to the target address during the checking of
3429 ignore_target_hosts.
3431 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3432 being passed; this would have caused $sender_host_name to have been used if
3433 matching the list had actually called for a host name (not very likely,
3434 since this list is usually IP addresses). A host name is now passed as
3437 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3438 code that specifies a non-restarting handler (typically sigaction() in
3439 modern systems) in an attempt to fix a rare and obscure crash bug.
3441 25. Narrowed the window for a race in the daemon that could cause it to ignore
3442 SIGCHLD signals. This is not a major problem, because they are used only to
3443 wake it up if nothing else does.
3445 26. A malformed maildirsize file could cause Exim to calculate negative values
3446 for the mailbox size or file count. Odd effects could occur as a result.
3447 The maildirsize information is now recalculated if the size or filecount
3450 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3451 support for a long time. Removed HAVE_SYS_VFS_H.
3453 28. Installed the latest version of exipick from John Jetmore.
3455 29. In an address list, if the pattern was not a regular expression, an empty
3456 subject address (from a bounce message) matched only if the pattern was an
3457 empty string. Non-empty patterns were not even tested. This was the wrong
3458 because it is perfectly reasonable to use an empty address as part of a
3459 database query. An empty address is now tested by patterns that are
3460 lookups. However, all the other forms of pattern expect the subject to
3461 contain a local part and a domain, and therefore, for them, an empty
3462 address still always fails if the pattern is not itself empty.
3464 30. Exim went into a mad DNS loop when attempting to do a callout where the
3465 host was specified on an smtp transport, and looking it up yielded more
3466 than one IP address.
3468 31. Re-factored the code for checking spool and log partition space into a
3469 function that finds that data and another that does the check. The former
3470 is then used to implement four new variables: $spool_space, $log_space,
3471 $spool_inodes, and $log_inodes.
3473 32. The RFC2047 encoding function was originally intended for short strings
3474 such as real names; it was not keeping to the 75-character limit for
3475 encoded words that the RFC imposes. It now respects the limit, and
3476 generates multiple encoded words if necessary. To be on the safe side, I
3477 have increased the buffer size for the ${rfc2047: expansion operator from
3480 33. It is now permitted to omit both strings after an "if" condition; if the
3481 condition is true, the result is "true". As before, when the second string
3482 is omitted, a false condition yields an empty string. This makes it less
3483 cumbersome to write custom ACL and router conditions.
3485 34. Failure to deliver a bounce message always caused it to be frozen, even if
3486 there was an errors_to setting on the router. The errors_to setting is now
3489 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3490 canonical form (fully expanded) before being placed in
3491 $sender_host_address.
3493 36. The table in the code that translates DNS record types into text (T_A to
3494 "A" for instance) was missing entries for NS and CNAME. It is just possible
3495 that this could have caused confusion if both these types were looked up
3496 for the same domain, because the text type is used as part of Exim's
3497 per-process caching. But the chance of anyone hitting this buglet seems
3500 37. The dnsdb lookup has been extended in a number of ways.
3502 (1) There is a new type, "zns", which walks up the domain tree until it
3503 finds some nameserver records. It should be used with care.
3505 (2) There is a new type, "mxh", which is like "mx" except that it returns
3506 just the host names, not the priorities.
3508 (3) It is now possible to give a list of domains (or IP addresses) to be
3509 looked up. The behaviour when one of the lookups defers can be
3510 controlled by a keyword.
3512 (4) It is now possible to specify the separator character for use when
3513 multiple records are returned.
3515 38. The dnslists ACL condition has been extended: it is now possible to supply
3516 a list of IP addresses and/or domains to be looked up in a particular DNS
3519 39. Added log_selector=+queue_time_overall.
3521 40. When running the queue in the test harness, wait just a tad after forking a
3522 delivery process, to get repeatability of debugging output.
3524 41. Include certificate and key file names in error message when GnuTLS fails
3525 to set them up, because the GnuTLS error message doesn't include the name
3526 of the failing file when there is a problem reading it.
3528 42. Allow both -bf and -bF in the same test run.
3530 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
3532 44. The "Exiscan patch" is now merged into the mainline Exim source.
3534 45. Sometimes the final signoff response after QUIT could fail to get
3535 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3536 < 0 before doing a fflush(). This bug looks as though it goes back to the
3537 introduction of TLS in release 3.20, but "sometimes" must have been rare
3538 because the tests only now provoked it.
3540 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
3541 (this can affect the format of dates).
3543 47. exim_tidydb, when checking for the continued existence of a message for
3544 which it has found a message-specific retry record, was not finding
3545 messages that were in split spool directories. Consequently, it was
3546 deleting retry records that should have stayed in existence.
3548 48. Steve fixed some bugs in eximstats.
3550 49. The SPA authentication driver was not abandoning authentication and moving
3551 on to the next authenticator when an expansion was forced to fail,
3552 contradicting the general specification for all authenticators. Instead it
3553 was generating a temporary error. It now behaves as specified.
3555 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
3556 (the order specifies the preference for clients). The order is now AES256,
3557 AES128, 3DES, ARCFOUR128.
3559 51. Small patch to Sieve code - explicitly set From: when generating an
3562 52. Exim crashed if a remote delivery caused a very long error message to be
3563 recorded - for instance if somebody sent an entire SpamAssassin report back
3564 as a large number of 550 error lines. This bug was coincidentally fixed by
3565 increasing the size of one of Exim's internal buffers (big_buffer) that
3566 happened as part of the Exiscan merge. However, to be on the safe side, I
3567 have made the code more robust (and fixed the comments that describe what
3570 53. Now that there can be additional text after "Completed" in log lines (if
3571 the queue_time_overall log selector is set), a one-byte patch to exigrep
3572 was needed to allow it to recognize "Completed" as not the last thing in
3575 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
3576 patch that reportedly fixes this has been added. I am not expert enough to
3577 create a test for it. This is what the patch creator wrote:
3579 "I found a little strange behaviour of ldap code when working with
3580 Windows 2003 AD Domain, where users was placed in more than one
3581 Organization Units. When I tried to give exim partial DN, the exit code
3582 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
3583 But simultaneously result of request was absolutely normal ldap result,
3584 so I produce this patch..."
3586 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
3587 REFERENCE, so I have modified the code to exclude the patch when that macro
3590 55. Some experimental protocols are using DNS PTR records for new purposes. The
3591 keys for these records are domain names, not reversed IP addresses. The
3592 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3593 leaves it alone. Component reversal etc. now happens only for IP addresses.
3596 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
3598 57. Double the size of the debug message buffer (to 2048) so that more of very
3599 long debug lines gets shown.
3601 58. The exicyclog utility now does better if the number of log files to keep
3602 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
3604 59. Two changes related to the smtp_active_hostname option:
3606 (1) $smtp_active_hostname is now available as a variable.
3607 (2) The default for smtp_banner uses $smtp_active_hostname instead
3608 of $primary_hostname.
3610 60. The host_aton() function is supposed to be passed a string that is known
3611 to be a valid IP address. However, in the case of IPv6 addresses, it was
3612 not checking this. This is a hostage to fortune. Exim now panics and dies
3613 if the condition is not met. A case was found where this could be provoked
3614 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3615 components; fortuitously, this particular loophole had already been fixed
3616 by change 4.50/55 above.
3618 If there are any other similar loopholes, the new check in host_aton()
3619 itself should stop them being exploited. The report I received stated that
3620 data on the command line could provoke the exploit when Exim was running as
3621 exim, but did not say which command line option was involved. All I could
3622 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3623 running as the user.
3626 61. There was a buffer overflow vulnerability in the SPA authentication code
3627 (which came originally from the Samba project). I have added a test to the
3628 spa_base64_to_bits() function which I hope fixes it.
3631 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
3632 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
3634 63. The daemon start-up calls getloadavg() while still root for those OS that
3635 need the first call to be done as root, but it missed one case: when
3636 deliver_queue_load_max is set with deliver_drop_privilege. This is
3637 necessary for the benefit of the queue runner, because there is no re-exec
3638 when deliver_drop_privilege is set.
3640 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
3641 This has been fixed.
3643 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3644 was in use, was not putting the data itself into the right store pool;
3645 consequently, it could be overwritten for a subsequent message in the same
3646 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3649 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
3651 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
3652 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
3653 the function were treating the return as a boolean value, which happened to
3654 work because 0=false and not-0=true, but is not correct code.
3656 68. The host_aton() function was not handling scoped IPv6 addresses (those
3657 with, for example, "%eth0" on the end) correctly.
3659 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
3660 negated items (that is, ~something) in unsigned ints. Some compilers
3661 apparently mutter when there is no cast.
3663 70. If an address verification called from an ACL failed, and did not produce a
3664 user-specific message (i.e. there was only a "system" message), nothing was
3665 put in $acl_verify_message. In this situation, it now puts the system
3668 71. Change 4.23/11 added synchronization checking at the start of an SMTP
3669 session; change 4.31/43 added the unwanted input to the log line - except
3670 that it did not do this in the start of session case. It now does.
3672 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
3673 This is wrong and can cause the other end to generate a synchronization
3674 error if it is another Exim or anything else that does the synchronization
3675 check. A QUIT command is no longer sent after a timeout.
3677 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
3678 during host lookups.
3680 74. The defer_ok option of callout verification was not working if it was used
3681 when verifying addresses in header lines, that is, for this case:
3683 verify = header_sender/callout=defer_ok
3685 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
3686 those file descriptors could be used for SMTP connections. If anything
3687 wrote to stderr (the example that came up was "warn" in embedded Perl), it
3688 could be sent to the SMTP client, causing chaos. The daemon now opens
3689 stdin, stdout, and stderr to /dev/null when it puts itself into the
3692 76. Arrange for output from Perl's "warn" command to be written to Exim's main
3693 log by default. The user can override this with suitable Perl magic.
3695 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
3696 the log message when discard triggers, was not working for the DATA ACL or
3697 for the non-SMTP ACL.
3699 78. Error message wording change in sieve.c.
3701 79. If smtp_accept_max_per_host was set, the number of connections could be
3702 restricted to fewer than expected, because the daemon was trying to set up
3703 a new connection before checking whether the processes handling previous
3704 connections had finished. The check for completed processes is now done
3705 earlier. On busy systems, this bug wouldn't be noticed because something
3706 else would have woken the daemon, and it would have reaped the completed
3709 80. If a message was submitted locally by a user whose login name contained one
3710 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
3711 It caused a spool format error. I have fixed the spool reading code. A
3712 related problem was that the "from" clause in the Received: line became
3713 illegal because of the space(s). It is now covered by ${quote_local_part.
3715 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
3718 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
3720 83. Patch from Sieve maintainer to fix unterminated string problem in
3721 "vacation" handling.
3723 84. Some minor changes to the Linux configuration files to help with other
3724 OS variants using glibc.
3726 85. One more patch for Sieve to update vacation handling to latest spec.
3729 ----------------------------------------------------
3730 See the note above about the 4.44 and 4.50 releases.
3731 ----------------------------------------------------
3737 1. Change 4.43/35 introduced a bug that caused file counts to be
3738 incorrectly computed when quota_filecount was set in an appendfile
3741 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3742 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3745 3. Give more explanation in the error message when the command for a transport
3746 filter fails to execute.
3748 4. There are several places where Exim runs a non-Exim command in a
3749 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3750 was being done only for the command run by the queryprogram router. It is
3751 now done for all such subprocesses. The other cases are: ${run, transport
3752 filters, and the commands run by the lmtp and pipe transports.
3754 5. Some older OS have a limit of 256 on the maximum number of file
3755 descriptors. Exim was using setrlimit() to set 1000 as a large value
3756 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3757 systems. I've change it so that if it can't get 1000, it tries for 256.
3759 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3760 was an oversight, and furthermore, ever since the addition of extra
3761 controls (e.g. 4.43/32), the checks on when to allow different forms of
3762 "control" were broken. There should now be diagnostics for all cases when a
3763 control that does not make sense is encountered.
3765 7. $recipients is now available in the predata ACL (oversight).
3767 8. Tidy the search cache before the fork to do a delivery from a message
3768 received from the command line. Otherwise the child will trigger a lookup
3769 failure and thereby defer the delivery if it tries to use (for example) a
3770 cached ldap connection that the parent has called unbind on.
3772 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3773 of $address_data from the recipient verification was clobbered by the
3774 sender verification.
3776 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3777 was its contents. (It was OK if the option was not defined at all.)
3779 11. A "Completed" log line is now written for messages that are removed from
3780 the spool by the -Mrm option.
3782 12. $host_address is now set to the target address during the checking of
3783 ignore_target_hosts.
3785 13. When checking ignore_target_hosts for an ipliteral router, no host name was
3786 being passed; this would have caused $sender_host_name to have been used if
3787 matching the list had actually called for a host name (not very likely,
3788 since this list is usually IP addresses). A host name is now passed as
3791 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3792 code that specifies a non-restarting handler (typically sigaction() in
3793 modern systems) in an attempt to fix a rare and obscure crash bug.
3795 15. Narrowed the window for a race in the daemon that could cause it to ignore
3796 SIGCHLD signals. This is not a major problem, because they are used only to
3797 wake it up if nothing else does.
3799 16. A malformed maildirsize file could cause Exim to calculate negative values
3800 for the mailbox size or file count. Odd effects could occur as a result.
3801 The maildirsize information is now recalculated if the size or filecount
3804 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3805 support for a long time. Removed HAVE_SYS_VFS_H.
3807 18. Updated exipick to current release from John Jetmore.
3809 19. Allow an empty sender to be matched against a lookup in an address list.
3810 Previously the only cases considered were a regular expression, or an
3813 20. Exim went into a mad DNS lookup loop when doing a callout where the
3814 host was specified on the transport, if the DNS lookup yielded more than
3817 21. The RFC2047 encoding function was originally intended for short strings
3818 such as real names; it was not keeping to the 75-character limit for
3819 encoded words that the RFC imposes. It now respects the limit, and
3820 generates multiple encoded words if necessary. To be on the safe side, I
3821 have increased the buffer size for the ${rfc2047: expansion operator from
3824 22. Failure to deliver a bounce message always caused it to be frozen, even if
3825 there was an errors_to setting on the router. The errors_to setting is now
3828 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3829 canonical form (fully expanded) before being placed in
3830 $sender_host_address.
3832 24. Updated eximstats to version 1.33
3834 25. Include certificate and key file names in error message when GnuTLS fails
3835 to set them up, because the GnuTLS error message doesn't include the name
3836 of the failing file when there is a problem reading it.
3838 26. Expand error message when OpenSSL has problems setting up cert/key files.
3841 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
3842 (this can affect the format of dates).
3844 28. exim_tidydb, when checking for the continued existence of a message for
3845 which it has found a message-specific retry record, was not finding
3846 messages that were in split spool directories. Consequently, it was
3847 deleting retry records that should have stayed in existence.
3849 29. eximstats updated to version 1.35
3850 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
3851 1.35 - bugfix such that pie charts by volume are generated correctly
3853 30. The SPA authentication driver was not abandoning authentication and moving
3854 on to the next authenticator when an expansion was forced to fail,
3855 contradicting the general specification for all authenticators. Instead it
3856 was generating a temporary error. It now behaves as specified.
3858 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
3859 (the order specifies the preference for clients). The order is now AES256,
3860 AES128, 3DES, ARCFOUR128.
3862 31. Small patch to Sieve code - explicitly set From: when generating an
3865 32. Exim crashed if a remote delivery caused a very long error message to be
3866 recorded - for instance if somebody sent an entire SpamAssassin report back
3867 as a large number of 550 error lines. This bug was coincidentally fixed by
3868 increasing the size of one of Exim's internal buffers (big_buffer) that
3869 happened as part of the Exiscan merge. However, to be on the safe side, I
3870 have made the code more robust (and fixed the comments that describe what
3873 33. Some experimental protocols are using DNS PTR records for new purposes. The
3874 keys for these records are domain names, not reversed IP addresses. The
3875 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3876 leaves it alone. Component reversal etc. now happens only for IP addresses.
3879 34. The host_aton() function is supposed to be passed a string that is known
3880 to be a valid IP address. However, in the case of IPv6 addresses, it was
3881 not checking this. This is a hostage to fortune. Exim now panics and dies
3882 if the condition is not met. A case was found where this could be provoked
3883 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3884 components; fortuitously, this particular loophole had already been fixed
3885 by change 4.50/55 or 4.44/33 above.
3887 If there are any other similar loopholes, the new check in host_aton()
3888 itself should stop them being exploited. The report I received stated that
3889 data on the command line could provoke the exploit when Exim was running as
3890 exim, but did not say which command line option was involved. All I could
3891 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3892 running as the user.
3895 35. There was a buffer overflow vulnerability in the SPA authentication code
3896 (which came originally from the Samba project). I have added a test to the
3897 spa_base64_to_bits() function which I hope fixes it.
3900 36. The daemon start-up calls getloadavg() while still root for those OS that
3901 need the first call to be done as root, but it missed one case: when
3902 deliver_queue_load_max is set with deliver_drop_privilege. This is
3903 necessary for the benefit of the queue runner, because there is no re-exec
3904 when deliver_drop_privilege is set.
3906 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3907 was in use, was not putting the data itself into the right store pool;
3908 consequently, it could be overwritten for a subsequent message in the same
3909 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3912 38. Sometimes the final signoff response after QUIT could fail to get
3913 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3914 < 0 before doing a fflush(). This bug looks as though it goes back to the
3915 introduction of TLS in release 3.20, but "sometimes" must have been rare
3916 because the tests only now provoked it.
3922 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
3923 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
3924 Now it returns an integer. A number of calls were still expecting a T/F
3925 return. Fortuitously, in all cases, the tests worked in OK situations,
3926 which is the norm. However, things would have gone wrong on any write
3927 failures on the smtp file descriptor. This function is used when sending
3928 messages over SMTP and also when doing verify callouts.
3930 2. When Exim is called to do synchronous delivery of a locally submitted
3931 message (the -odf or -odi options), it no longer closes stderr before doing
3934 3. Implemented the mua_wrapper option.
3936 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
3938 5. Implemented the functions header_remove(), header_testname(),
3939 header_add_at_position(), and receive_remove_recipient(), and exported them
3942 6. If an ACL "warn" statement specified the addition of headers, Exim already
3943 inserted X-ACL-Warn: at the start if there was no header name. However, it
3944 was not making this test for the second and subsequent header lines if
3945 there were newlines in the string. This meant that an invalid header could
3946 be inserted if Exim was badly configured.
3948 7. Allow an ACL "warn" statement to add header lines at the start or after all
3949 the Received: headers, as well as at the end.
3951 8. Added the rcpt_4xx retry error code.
3953 9. Added postmaster_mailfrom=xxx to callout verification option.
3955 10. Added mailfrom=xxxx to the callout verification option, for verify=
3958 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
3959 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
3961 12. Inserted some casts to stop certain compilers warning when using pointer
3962 differences as field lengths or precisions in printf-type calls (mostly
3963 affecting debugging statements).
3965 13. Added optional readline() support for -be (dynamically loaded).
3967 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
3968 same clock tick as a message's arrival, so that its received time was the
3969 same as the "first fail" time on the retry record, and that message
3970 remained on the queue past the ultimate address timeout, every queue runner
3971 would try a delivery (because it was past the ultimate address timeout) but
3972 after another failure, the ultimate address timeout, which should have then
3973 bounced the address, did not kick in. This was a "< instead of <=" error;
3974 in most cases the first failure would have been in the next clock tick
3975 after the received time, and all would be well.
3977 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
3978 being recognized when the domain list was tested by the match_domain
3979 condition in an expansion string.
3981 16. Added the ${str2b64: operator.
3983 17. Exim was always calling setrlimit() to set a large limit for the number of
3984 processes, without checking whether the existing limit was already
3985 adequate. (It did check for the limit on file descriptors.) Furthermore,
3986 errors from getrlimit() and setrlimit() were being ignored. Now they are
3987 logged to the main and panic logs, but Exim does carry on, to try to do its
3988 job under whatever limits there are.
3990 18. Imported PCRE 5.0.
3992 19. Trivial typo in log message " temporarily refused connection" (the leading
3995 20. If the log selector return_path_on_delivery was set and an address was
3996 redirected to /dev/null, the delivery process crashed because it assumed
3997 that a return path would always be set for a "successful" delivery. In this
3998 case, the whole delivery is bypassed as an optimization, and therefore no
4001 21. Internal re-arrangement: the function for sending a challenge and reading
4002 a response while authentication was assuming a zero-terminated challenge
4003 string. It's now changed to take a pointer and a length, to allow for
4004 binary data in such strings.
4006 22. Added the cyrus_sasl authenticator (code supplied by MBM).
4008 23. Exim was not respecting finduser_retries when seeking the login of the
4009 uid under which it was called; it was always trying 10 times. (The default
4010 setting of finduser_retries is zero.) Also, it was sleeping after the final
4011 failure, which is pointless.
4013 24. Implemented tls_on_connect_ports.
4015 25. Implemented acl_smtp_predata.
4017 26. If the domain in control=submission is set empty, Exim assumes that the
4018 authenticated id is a complete email address when it generates From: or
4019 Sender: header lines.
4021 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
4022 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
4023 chown and chgrp in /bin and hostname in /usr/bin.
4025 28. Exim was keeping the "process log" file open after each use, just as it
4026 does for the main log. This opens the possibility of it remaining open for
4027 long periods when the USR1 signal hits a daemon. Occasional processlog
4028 errors were reported, that could have been caused by this. Anyway, it seems
4029 much more sensible not to leave this file open at all, so that is what now
4032 29. The long-running daemon process does not normally write to the log once it
4033 has entered its main loop, and it closes the log before doing so. This is
4034 so that log files can straightforwardly be renamed and moved. However,
4035 there are a couple of unusual error situations where the daemon does write
4036 log entries, and I had neglected to close the log afterwards.
4038 30. The text of an SMTP error response that was received during a remote
4039 delivery was being truncated at 512 bytes. This is too short for some of
4040 the long messages that one sometimes sees. I've increased the limit to
4043 31. It is now possible to make retry rules that apply only when a message has a
4044 specific sender, in particular, an empty sender.
4046 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
4047 it possible to be selective about when SMTP synchronization is enforced.
4049 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
4051 32. Implemented hosts_connection_nolog.
4053 33. Added an ACL for QUIT.
4055 34. Setting "delay_warning=" to disable warnings was not working; it gave a
4058 35. Added mailbox_size and mailbox_filecount to appendfile.
4060 36. Added control = no_multiline_responses to ACLs.
4062 37. There was a bug in the logic of the code that waits for the clock to tick
4063 in the case where the clock went backwards by a substantial amount such
4064 that the microsecond fraction of "now" was more than the microsecond
4065 fraction of "then" (but the whole seconds number was less).
4067 38. Added support for the libradius Radius client library this is found on
4068 FreeBSD (previously only the radiusclient library was supported).
4074 1. When certain lookups returned multiple values in the form name=value, the
4075 quoting of the values was not always being done properly. Specifically:
4076 (a) If the value started with a double quote, but contained no whitespace,
4078 (b) If the value contained whitespace other than a space character (i.e.
4079 tabs or newlines or carriage returns) it was not quoted.
4080 This fix has been applied to the mysql and pgsql lookups by writing a
4081 separate quoting function and calling it from the lookup code. The fix
4082 should probably also be applied to nisplus, ibase and oracle lookups, but
4083 since I cannot test any of those, I have not disturbed their existing code.
4085 2. A hit in the callout cache for a specific address caused a log line with no
4086 reason for rejecting RCPT. Now it says "Previous (cached) callout
4087 verification failure".
4089 3. There was an off-by-one bug in the queryprogram router. An over-long
4090 return line was truncated at 256 instead of 255 characters, thereby
4091 overflowing its buffer with the terminating zero. As well as fixing this, I
4092 have increased the buffer size to 1024 (and made a note to document this).
4094 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
4095 when Exim is waiting for an SMTP response from a remote server, Exim
4096 restarts its select() call on the socket, thereby resetting its timeout.
4097 This is not a problem when such interrupts are rare. Somebody set up a cron
4098 job to run exiwhat every 2 minutes, which is less than the normal select()
4099 timeout (5 or 10 minutes). This meant that the select() timeout never
4100 kicked in because it was always reset. I have fixed this by comparing the
4101 time when an interrupt arrives with the time at the start of the first call
4102 to select(). If more time than the timeout has elapsed, the interrupt is
4103 treated as a timeout.
4105 5. Some internal re-factoring in preparation for the addition of Sieve
4106 extensions (by MH). In particular, the "personal" test is moved to a
4107 separate function, and given an option for scanning Cc: and Bcc: (which is
4108 not set for Exim filters).
4110 6. When Exim created an email address using the login of the caller as the
4111 local part (e.g. when creating a From: or Sender: header line), it was not
4112 quoting the local part when it contained special characters such as @.
4114 7. Installed new OpenBSD configuration files.
4116 8. Reworded some messages for syntax errors in "and" and "or" conditions to
4117 try to make them clearer.
4119 9. Callout options, other than the timeout value, were being ignored when
4120 verifying sender addresses in header lines. For example, when using
4122 verify = header_sender/callout=no_cache
4124 the cache was (incorrectly) being used.
4126 10. Added a missing instance of ${EXE} to the exim_install script; this affects
4127 only the Cygwin environment.
4129 11. When return_path_on_delivery was set as a log selector, if different remote
4130 addresses in the same message used different return paths and parallel
4131 remote delivery occurred, the wrong values would sometimes be logged.
4132 (Whenever a remote delivery process finished, the return path value from
4133 the most recently started remote delivery process was logged.)
4135 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
4136 lines when AUTH and/or TLS are in use. This is the "received protocol"
4137 field. Exim used to use "asmtp" for authenticated SMTP, without any
4138 indication (in the protocol name) for TLS use. Now it follows the RFC and
4139 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
4140 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
4141 names appear in log lines as well as in Received: header lines.
4143 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
4144 extensions, and comparison tests, and to fix some bugs.
4146 14. Changes to the "personal" filter test:
4148 (1) The test was buggy in that it was just doing the equivalent of
4149 "contains" tests on header lines. For example, if a user's address was
4150 anne@some.where, the "personal" test would incorrectly be true for
4152 To: susanne@some.where
4154 This test is now done by extracting each address from the header in turn,
4155 and checking the entire address. Other tests that are part of "personal"
4156 are now done using regular expressions (for example, to check local parts
4157 of addresses in From: header lines).
4159 (2) The list of non-personal local parts in From: addresses has been
4160 extended to include "listserv", "majordomo", "*-request", and "owner-*",
4161 taken from the Sieve specification recommendations.
4163 (3) If the message contains any header line starting with "List-" it is
4164 treated as non-personal.
4166 (4) The test for "circular" in the Subject: header line has been removed
4167 because it now seems ill-conceived.
4169 15. Minor typos in src/EDITME comments corrected.
4171 16. Installed latest exipick from John Jetmore.
4173 17. If headers_add on a router specified a text string that was too long for
4174 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
4175 of string_sprintf() is now avoided.
4177 18. $message_body_size was not set (it was always zero) when running the DATA
4178 ACL and the local_scan() function.
4180 19. For the "mail" command in an Exim filter, no default was being set for
4181 the once_repeat time, causing a random time value to be used if "once" was
4182 specified. (If the value happened to be <= 0, no repeat happened.) The
4183 default is now 0s, meaning "never repeat". The "vacation" command was OK
4184 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
4185 (I found it when inspecting the code).
4187 20. There is now an overall timeout for performing a callout verification. It
4188 defaults to 4 times the callout timeout, which applies to individual SMTP
4189 commands during the callout. The overall timeout applies when there is more
4190 than one host that can be tried. The timeout is checked before trying the
4191 next host. This prevents very long delays if there are a large number of
4192 hosts and all are timing out (e.g. when the network connections are timing
4193 out). The value of the overall timeout can be changed by specifying an
4194 additional sub-option for "callout", called "maxwait". For example:
4196 verify = sender/callout=5s,maxwait=20s
4198 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
4199 to the end before writing, but this should make it even safer).
4201 22. Exim was forgetting that it had advertised PIPELINING for the second and
4202 subsequent messages on an SMTP connection. It was also not resetting its
4203 memory on STARTTLS and an internal HELO.
4205 23. When Exim logs an SMTP synchronization error within a session, it now
4206 records whether PIPELINING has been advertised or not.
4208 24. Added 3 instances of "(long int)" casts to time_t variables that were being
4209 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
4210 rather than long int.
4212 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
4214 26. Added the never_mail option to autoreply.
4220 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
4221 crash if the getsockname() call failed; this can happen if a connection is
4222 closed very soon after it is established. The problem was simply in the
4223 order in which certain operations were done, causing Exim to try to write
4224 to the SMTP stream before it had set up the file descriptor. The bug has
4225 been fixed by making things happen in the correct order.
4231 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
4232 before the connection was closed, thus losing the rejection response.
4234 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
4235 some early Solaris releases, but causes trouble in current releases where
4236 socklen_t is defined.
4238 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
4241 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
4244 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
4245 that releasing the top of it at the end releases what was used for sub-
4246 expansions (unless the block got too big). However, discard this block if
4247 the first thing is a variable or header, so that we can use its block when
4248 it is dynamic (useful for very large $message_headers, for example).
4250 6. Lookups now cache *every* query, not just the most recent. A new, separate
4251 store pool is used for this. It can be recovered when all lookup caches are
4252 flushed. Lookups now release memory at the end of their result strings.
4253 This has involved some general refactoring of the lookup sources.
4255 7. Some code has been added to the store_xxx() functions to reduce the amount
4256 of flapping under certain conditions.
4258 8. log_incoming_interface used to affect only the <= reception log lines. Now
4259 it causes the local interface and port to be added to several more SMTP log
4260 lines, for example "SMTP connection from", and rejection lines.
4262 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
4264 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
4266 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
4267 could be overwritten at the end of the current message (or the start of a
4268 new message if it was set in a HELO ACL). The value is now preserved for
4269 the duration of the SMTP connection.
4271 12. If a transport had a headers_rewrite setting, and a matching header line
4272 contained an unqualified address, that address was qualified, even if it
4273 did not match any rewriting rules. The underlying bug was that the values
4274 of the flags that permit the existence of unqualified sender and recipient
4275 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
4276 non-local messages, and by -bnq for local messages) were not being
4277 preserved with the message after it was received.
4279 13. When Exim was logging an SMTP synchronization error, it could sometimes log
4280 "next input=" as part of the text comprising the host identity instead of
4281 the correct text. The code was using the same buffer for two different
4282 strings. However, depending on which order the printing function evaluated
4283 its arguments, the bug did not always show up. Under Linux, for example, my
4284 test suite worked just fine.
4286 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
4287 doesn't work with some older versions of Perl. It has been changed to "my",
4288 which in any case is probably the better facility to use.
4290 15. A really picky compiler found some instances of statements for creating
4291 error messages that either had too many or two few arguments for the format
4294 16. The size of the buffer for calls to the DNS resolver has been increased
4295 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4296 for addresses that have a lot of PTR records. This alleviates a problem; it
4297 does not fully solve it.
4299 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4300 buffer now truncates the list and logs the incident, which is the same
4301 action as happens when Exim is looking up a host name and its aliases.
4302 Previously in this situation something unpredictable would happen;
4303 sometimes it was "internal error: store_reset failed".
4305 18. If a server dropped the connection unexpectedly when an Exim client was
4306 using GnuTLS and trying to read a response, the client delivery process
4307 crashed while trying to generate an error log message.
4309 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4310 string, for example:
4312 warn message = H1: something\nH2: something
4314 the text was added as a single header line from Exim's point of view
4315 though it ended up OK in the delivered message. However, searching for the
4316 second and subsequent header lines using $h_h2: did not work. This has been
4317 fixed. Similarly, if a system filter added multiple headers in this way,
4318 the routers could not see them.
4320 20. Expanded the error message when iplsearch is called with an invalid key to
4321 suggest using net-iplsearch in a host list.
4323 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4324 ACLs are no longer actually imposed (and a message to that effect is
4327 22. If a "gecos" field in a passwd entry contained escaped characters, in
4328 particular, if it contained a \" sequence, Exim got it wrong when building
4329 a From: or a Sender: header from that name. A second bug also caused
4330 incorrect handling when an unquoted " was present following a character
4331 that needed quoting.
4333 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4334 was not being matched caselessly.
4336 24. Arranged for all hyphens in the exim.8 source to be escaped with
4339 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4340 properly. Recipient callout cache records were still being keyed to include
4341 the sender, even when use_sender was set false. This led to far more
4342 callouts that were necessary. The sender is no longer included in the key
4343 when use_sender is false.
4345 26. Added "control = submission" modifier to ACLs.
4347 27. Added the ${base62d: operator to decode base 62 numbers.
4349 28. dnsdb lookups can now access SRV records.
4351 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4352 the configuration file.
4354 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4355 (-v) mode. This makes the output for a verbose queue run more intelligible.
4357 31. Added a use_postmaster feature to recipient callouts.
4359 32. Added the $body_zerocount variable, containing the number of binary zero
4360 bytes in the message body.
4362 33. The time of last modification of the "new" subdirectory is now used as the
4363 "mailbox time last read" when there is a quota error for a maildir
4366 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4368 35. Added +ignore_unknown as a special item in host lists.
4370 36. Code for decoding IPv6 addresses in host lists is now included, even if
4371 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4372 address was recognized as an IP address, but was then not correctly decoded
4373 into binary, causing unexpected and incorrect effects when compared with
4380 1. Very minor rewording of debugging text in manualroute to say "list of
4381 hosts" instead of "hostlist".
4383 2. If verify=header_syntax was set, and a header line with an unqualified
4384 address (no domain) and a large number of spaces between the end of the
4385 name and the colon was received, the reception process suffered a buffer
4386 overflow, and (when I tested it) crashed. This was caused by some obsolete
4387 code that should have been removed. The fix is to remove it!
4389 3. When running in the test harness, delay a bit after writing a bounce
4390 message to get a bit more predictability in the log output.
4392 4. Added a call to search_tidyup() just before forking a reception process. In
4393 theory, someone could use a lookup in the expansion of smtp_accept_max_
4394 per_host which, without the tidyup, could leave open a database connection.
4396 5. Added the variables $recipient_data and $sender_data which get set from a
4397 lookup success in an ACL "recipients" or "senders" condition, or a router
4398 "senders" option, similar to $domain_data and $local_part_data.
4400 6. Moved the writing of debug_print from before to after the "senders" test
4403 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4404 problems for message scanning, either using a data ACL, or using
4405 local_scan() because the Received: header was not generated till after they
4406 were called (in order to set the time as the time of reception completion).
4407 I have revised the way this works. The header is now generated after the
4408 body is received, but before the ACL or local_scan() are called. After they
4409 are run, the timestamp in the header is updated.
4415 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4416 before starting a queue runner without re-exec. This happened only when
4417 deliver_drop_privilege was set or when the Exim user was set to root. The
4418 effect of the bug was that timeouts during subsequent deliveries caused
4419 crashes instead of being properly handled. The handler is now left at its
4420 default (and expected) setting.
4422 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4423 message, again when deliver_drop_privilege is set or Exim is run as root.
4424 The bug described in (1) was not present in this case, but the tidying up
4425 of the other signals was missing. I have made the two cases consistent.
4427 3. The ignore_target_hosts setting on a manualroute router was being ignored
4428 for hosts that were looked up using the /MX notation.
4430 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4433 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4434 operated on the sender address. After changing the $sender_address to <>
4435 for the sender address verify, Exim was re-instated it as the original
4436 (before rewriting) address, but remembering that it had rewritten it, so it
4437 wasn't rewriting it again. This bug also had the effect of breaking the
4438 sender address verification caching when the sender address was rewritten.
4440 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4441 This has been changed so that if the ip literal address matches
4442 ignore_target_hosts, the router declines.
4444 7. Added expansion conditions match_domain, match_address, and match_local_
4445 part (NOT match_host).
4447 8. The placeholder for the Received: header didn't have a length field set.
4449 9. Added code to Exim itself and to exim_lock to test for a specific race
4450 condition that could lead to file corruption when using MBX delivery. The
4451 issue is with the lockfile that is created in /tmp. If this file is removed
4452 after a process has opened it but before that process has acquired a lock,
4453 there is the potential for a second process to recreate the file and also
4454 acquire a lock. This could lead to two Exim processes writing to the file
4455 at the same time. The added code performs the same test as UW imapd; it
4456 checks after acquiring the lock that its file descriptor still refers to
4457 the same named file.
4459 10. The buffer for building added header lines was of fixed size, 8192 bytes.
4460 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
4463 11. Added the smtp_active_hostname option. If used, this will typically be made
4464 to depend on the incoming interface address. Because $interface_address is
4465 not set up until the daemon has forked a reception process, error responses
4466 that can happen earlier (such as "too many connections") no longer contain
4469 12. If an expansion in a condition on a "warn" statement fails because a lookup
4470 defers, the "warn" statement is abandoned, and the next ACL statement is
4471 processed. Previously this caused the whole ACL to be aborted.
4473 13. Added the iplsearch lookup type.
4475 14. Added ident_timeout as a log selector.
4477 15. Added tls_certificate_verified as a log selector.
4479 16. Added a global option tls_require_ciphers (compare the smtp transport
4480 option of the same name). This controls incoming TLS connections.
4482 17. I finally figured out how to make tls_require_ciphers do a similar thing
4483 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
4484 before starting the TLS session.
4486 18. Tabs are now shown as \t in -bP output.
4488 19. If the log selector return_path_on_delivery was set, Exim crashed when
4489 bouncing a message because it had too many Received: header lines.
4491 20. If two routers both had headers_remove settings, and the first one included
4492 a superfluous trailing colon, the final name in the first list and the
4493 first name in the second list were incorrectly joined into one item (with a
4494 colon in the middle).
4500 1. Added -C and -D options to the exinext utility, mainly to make it easier
4501 to include in the automated testing, but these could be helpful when
4502 multiple configurations are in use.
4504 2. The exinext utility was not formatting the output nicely when there was
4505 an alternate port involved in the retry record key, nor when there was a
4506 message id as well (for retries that were specific to a specific message
4507 and a specific host). It was also confused by IPv6 addresses, because of
4508 the additional colons they contain. I have fixed the IPv4 problem, and
4509 patched it up to do a reasonable job for IPv6.
4511 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
4512 delivery, the log line now contains "pipelined" if PIPELINING was used.
4514 4. An SMTP transport process used to panic and die if the bind() call to set
4515 an explicit outgoing interface failed. This has been changed; it is now
4516 treated in the same way as a connect() failure.
4518 5. A reference to $sender_host_name in the part of a conditional expansion
4519 that was being skipped was still causing a DNS lookup. This no longer
4522 6. The def: expansion condition was not recognizing references to header lines
4523 that used bh_ and bheader_.
4525 7. Added the _cache feature to named lists.
4527 8. The code for checking quota_filecount in the appendfile transport was
4528 allowing one more file than it should have been.
4530 9. For compatibility with Sendmail, the command line option
4538 and sets the incoming protocol and host name (for trusted callers). The
4539 host name and its colon can be omitted when only the protocol is to be set.
4540 Note the Exim already has two private options, -pd and -ps, that refer to
4541 embedded Perl. It is therefore impossible to set a protocol value of "d" or
4542 "s", but I don't think that's a major issue.
4544 10. A number of refactoring changes to the code, none of which should affect
4547 (a) The number of logging options was getting close to filling up the
4548 32-bit word that was used as a bit map. I have split them into two classes:
4549 those that are passed in the argument to log_write(), and those that are
4550 only ever tested independently outside of that function. These are now in
4551 separate 32-bit words, so there is plenty of room for expansion again.
4552 There is no change in the user interface or the logging behaviour.
4554 (b) When building, for example, log lines, the code previously used a
4555 macro that called string_cat() twice, in order to add two strings. This is
4556 not really sufficiently general. Furthermore, there was one instance where
4557 it was actually wrong because one of the argument was used twice, and in
4558 one call a function was used. (As it happened, calling the function twice
4559 did not affect the overall behaviour.) The macro has been replaced by a
4560 function that can join an arbitrary number of extra strings onto a growing
4563 (c) The code for expansion conditions now uses a table and a binary chop
4564 instead of a serial search (which was left over from when there were very
4565 few conditions). Also, it now recognizes conditions like "pam" even when
4566 the relevant support is not compiled in: a suitably worded error message is
4567 given if an attempt is made to use such a condition.
4569 11. Added ${time_interval:xxxxx}.
4571 12. A bug was causing one of the ddress fields not to be passed back correctly
4572 from remote delivery subprocesses. The field in question was not being
4573 subsequently used, so this caused to problems in practice.
4575 13. Added new log selectors queue_time and deliver_time.
4577 14. Might have fixed a bug in maildirsizefile handling that threw up
4578 "unexpected character" debug warnings, and recalculated the data
4579 unnecessarily. In any case, I expanded the warning message to give more
4582 15. Added the message "Restricted characters in address" to the statements in
4583 the default ACL that block characters like @ and % in local parts.
4585 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
4586 Three changes have been made:
4588 (a) There was a serious bug; a negative response to MAIL caused the whole
4589 recipient domain to be cached as invalid, thereby blocking all messages
4590 to all local parts at the same domain, from all senders. This bug has
4591 been fixed. The domain is no longer cached after a negative response to
4592 MAIL if the sender used is not empty.
4594 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
4597 (c) A new callout option, "use_sender" has been added for people who want
4598 the modified behaviour.
4604 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
4607 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
4608 indeed breaks things for older releases.
4610 3. Added additional logging to the case where there is a problem reading data
4611 from a filter that is running in a subprocess using a pipe, in order to
4612 try to track down a specific problem.
4614 4. Testing facility fudge: when running in the test harness and attempting
4615 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
4616 getting "No route to host". Convert this to a timeout.
4618 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
4621 6. Some OS don't have socklen_t but use size_t instead. This affects the
4622 fifth argument of getsockopt() amongst other things. This is now
4623 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
4624 can be set for individual OS. I have set it for SunOS5, OSF1, and
4625 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
4626 some earlier ones do not.
4628 7. Change 4.30/15 was not doing the test caselessly.
4630 8. The standard form for an IPv6 address literal was being rejected by address
4631 parsing in, for example, MAIL and RCPT commands. An example of this kind of
4632 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4633 this, as well as the form without the "IPv6" on the front (but only when
4634 address literals are enabled, of course).
4636 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
4638 10. Exim crashed if a message with an empty sender address specified by -f
4639 encountered a router with an errors_to setting. This could be provoked only
4640 by a command such as
4644 where an empty string was supplied; "<>" did not hit this bug.
4646 11. Installed PCRE release 4.5.
4648 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
4649 remained set. It is now erased.
4651 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
4652 times from message ids (which are base 36 rather than the normal 62).
4654 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
4655 were being counted as actual protocol errors, and logged if the log
4656 selector +smtp_protocol_error was set. One cannot be perfect in this test,
4657 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
4658 and DATA following a set of rejected RCPTs do not count as protocol errors.
4659 In other words, Exim assumes they were pipelined, though this may not
4660 actually be the case. Of course, in all cases the client gets an
4661 appropriate error code.
4663 15. If a lookup fails in an ACL condition, a message about the failure may
4664 be available; it is used if testing the ACL cannot continue, because most
4665 such messages specify what the cause of the deferral is. However, some
4666 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
4667 that caused an old message to be retained and used if a later statement
4668 caused a defer, replacing the real cause of the deferral.
4670 16. If an IP address had so many PTR records that the DNS lookup buffer
4671 was not large enough to hold them, Exim could crash while trying to process
4672 the truncated data. It now detects and logs this case.
4674 17. Further to 4.21/58, another change has been made: if (and only if) the
4675 first line of a message (the first header line) ends with CRLF, a bare LF
4676 in a subsequent header line has a space inserted after it, so as not to
4677 terminate the header.
4679 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
4680 unnecessarily, used atoi() instead of strtol(), and didn't check the
4681 termination when getting file sizes from file names by regex.
4683 19. Completely re-implemented the support for maildirsize files, in the light
4684 of a number of problems with the previous contributed implementation
4685 (4.30/29). In particular:
4687 . If the quota is zero, the maildirsize file is maintained, but no quota is
4690 . If the maildir directory does not exist, it is created before any attempt
4691 to write a maildirsize file.
4693 . The quota value in the file is just a cache; if the quota is changed in
4694 the transport, the new value overrides.
4696 . A regular expression is available for excluding directories from the
4699 20. The autoreply transport checks the characters in options that define the
4700 message's headers; it allows continued headers, but it was checking with
4701 isspace() after an embedded newline instead of explicitly looking for a
4704 21. If all the "regular" hosts to which an address was routed had passed their
4705 expiry times, and had not reached their retry times, the address was
4706 bounced, even if fallback hosts were defined. Now Exim should go on to try
4709 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
4710 equivalent code in the SMTP transport. Some hosts send humungous responses
4711 to HELO/EHLO, more than 1024 it seems.
4713 23. Refactoring: code in filter.c used (void *) for "any old type" but this
4714 gives compiler warnings in some environments. I've now done it "properly",
4717 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
4718 (because of problems with the built-in one) was declared to return uschar *
4719 instead of char *, causing compiler failure.
4721 25. Fixed a file descriptor leak when processing alias/forward files.
4723 26. Fixed a minor format string issue in dbfn.c.
4725 27. Typo in exim.c: ("dmbnz" for "dbmnz").
4727 28. If a filter file refered to $h_xxx or $message_headers, and the headers
4728 contained RFC 2047 "words", Exim's memory could, under certain conditions,
4731 29. When a sender address is verified, it is cached, to save repeating the test
4732 when there is more than one recipient in a message. However, when the
4733 verification involves a callout, it is possible for different callout
4734 options to be set for different recipients. It is too complicated to keep
4735 track of this in the cache, so now Exim always runs a verification when a
4736 callout is required, relying on the callout cache for the optimization.
4737 The overhead is duplication of the address routing, but this should not be
4740 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
4741 to be verified with callout=postmaster, and the main callout worked but the
4742 postmaster check failed, the verification correctly failed. However, if a
4743 subsequent RCPT command asked for sender verification *without* the
4744 postmaster check, incorrect caching caused this verification also to fail,
4747 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
4748 it was not caching the DNS options (qualify_single, search_parents) that
4749 were used when the lookup failed. A subsequent lookup with different
4750 options therefore always gave the same answer, though there were cases
4751 where it should not have. (Example: a "domains = !$mx_any" option on a
4752 dnslookup router: the "domains" option is always processed without any
4753 widening, but the router might have qualify_single set.) Now Exim uses the
4754 cached value only when the same options are set.
4756 32. Added John Jetmore's "exipick" utility to the distribution.
4758 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
4759 than a timeout (e.g. a certificate is required, and is not provided), an
4760 Exim server now closes the connection immediately. Previously it waited for
4761 the client to close - but if the client is SSL, it seems that they each
4762 wait for each other, leading to a delay before one of them times out.
4764 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
4765 maintained 0.8.x compatibility because I don't think many are using it, and
4766 it is clearly obsolete.
4768 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
4771 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
4772 client certificate was expired. A simple patch fixes this, though I don't
4773 understand the full logic of why the verify callback is called multiple
4776 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
4777 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
4778 which causes problems with some clients (such as the Certicom SSL Plus
4779 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
4780 disables the coutermeasure allowing Eudora to connect."
4782 38. Exim was not checking that a write() to a log file succeeded. This could
4783 lead to Bad Things if a log got too big, in particular if it hit a file
4784 size limit. Exim now panics and dies if it cannot write to a log file, just
4785 as it does if it cannot open a log file.
4787 39. Modified OS/Makefile-Linux so that it now contains
4789 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
4791 The two -D definitions ensure that Exim is compiled with large file
4792 support, which makes it possible to handle log files that are bigger than
4795 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
4796 instance) a domain was checked against a named list that involved a lookup,
4797 causing $domain_data to be set, then another domain was checked against the
4798 same list, then the first domain was re-checked, the value of $domain_data
4799 after the final check could be wrong. In particular, if the second check
4800 failed, it could be set empty. This bug probably also applied to
4803 41. The strip_trailing_dot option was not being applied to the address given
4804 with the -f command-line option.
4806 42. The code for reading a message's header from the spool was incrementing
4807 $received_count, but never initializing it. This meant that the value was
4808 incorrect (doubled) while delivering a message in the same process in which
4809 it was received. In the most common configuration of Exim, this never
4810 happens - a fresh exec is done - but it can happen when
4811 deliver_drop_privilege is set.
4813 43. When Exim logs an SMTP synchronization error - client data sent too soon -
4814 it now includes up to 150 characters of the unexpected data in the log
4817 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
4818 and building data strings. The size of both of these buffers was 10 000
4819 bytes - far larger than anybody would *ever* want, thought I. Needless to
4820 say, somebody hit the limit. I have increased the maximum line length to
4821 20 000 and the maximum data length of concatenated lines to 100 000. I have
4822 also fixed two bugs, because there was no checking on these buffers. Tsk,
4823 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
4824 buffer is too small.
4826 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
4827 lsearch lookups. Now it does.
4829 46. When parsing a route_list item in a manualroute router, a fixed-length
4830 buffer was used for the list of hosts. I made this 1024 bytes long,
4831 thinking that nobody would ever have a list of hosts that long. Wrong.
4832 Somebody had a whole pile of complicated expansion conditions, and the
4833 string was silently truncated, leading to an expansion error. It turns out
4834 that it is easier to change to an unlimited length (owing to other changes
4835 that have happened since this code was originally written) than to build
4836 structure for giving a limitation error. The length of the item that
4837 expands into the list of hosts is now unlimited.
4839 47. The lsearch lookup could not handle data where the length of text line was
4840 more than 4095 characters. Such lines were truncated, leading to shortened
4841 data being returned. It should now handle lines of any length.
4843 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
4844 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
4847 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
4848 replacing strings such as BIN_DIRECTORY in a source file: the replacement
4849 no longer happens in comment lines. A list of replacements is now placed
4850 at the head of all of the source files, except those whose only change is
4851 to replace PERL_COMMAND in the very first #! line.
4853 50. Replaced the slow insertion sort in queue.c, for sorting the list of
4854 messages on the queue, with a bottom-up merge sort, using code contributed
4855 by Michael Haardt. This should make operations like -bp somewhat faster on
4856 large queues. It won't affect queue runners, except when queue_run_in_order
4859 51. Installed eximstats 1.31 in the distribution.
4861 52. Added support for SRV lookups to the dnslookup router.
4863 53. If an ACL referred to $message_body or $message_body_end, the value was not
4864 reset for any messages that followed in the same SMTP session.
4866 54. The store-handling optimization for building very long strings was not
4867 differentiating between the different store pools. I don't think this
4868 actually made any difference in practice, but I've tidied it.
4870 55. While running the routers to verify a sender address, $sender_address
4871 was still set to the sender address. This is wrong, because when routing to
4872 send a bounce to the sender, it would be empty. Therefore, I have changed
4873 it so that, while verifying a sender address, $sender_address is set to <>.
4874 (There is no change to what happens when verifying a recipient address.)
4876 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
4877 target A or AAAA records (if not already returned) without resetting the
4878 qualify_single or search_parents options of the DNS resolver. These are
4879 inappropriate in this case because the targets of MX and SRV records must
4880 be FQDNs. A broken DNS record could cause trouble if it happened to have a
4881 target that, when qualified, matched something in the local domain. These
4882 two options are now turned off when doing these lookups.
4884 57. It seems that at least some releases of Reiserfs (which does not have the
4885 concept of a fixed number of inodes) returns zero and not -1 for the
4886 number of available inodes. This interacted badly with check_spool_inodes,
4887 which assumed that -1 was the "no such thing" setting. What I have done is
4888 to check that the total number of inodes is greater than zero before doing
4889 the test of how many are available.
4891 58. When a "warn" ACL statement has a log_message modifier, the message is
4892 remembered, and not repeated. This is to avoid a lot of repetition when a
4893 message has many recipients that cause the same warning to be written.
4894 Howewer, Exim was preserving the list of already written lines for an
4895 entire SMTP session, which doesn't seem right. The memory is now reset if a
4896 new message is started.
4898 59. The "rewrite" debugging flag was not showing the result of rewriting in the
4899 debugging output unless log_rewrite was also set.
4901 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
4902 of (int)(handle) when we know that handle contains (void *)(-1).
4904 61. The Exim daemon panic-logs an error return when it closes the incoming
4905 connection. However "connection reset by peer" seems to be common, and
4906 isn't really an error worthy of noting specially, so that particular error
4909 62. When Exim is trying to find all the local interfaces, it used to panic and
4910 die if the ioctl to get the interface flags failed. However, it seems that
4911 on at least one OS (Solaris 9) it is possible to have an interface that is
4912 included in the list of interfaces, but for which you get a failure error
4913 for this call. This happens when the interface is not "plumbed" into a
4914 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
4915 failure of the "get flags" call assumes that the interface is down.
4917 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
4918 makes life easier for people who are doing arithmetic on fields extracted
4919 from dates, where you often get leading zeros that should not be
4920 interpreted as octal.
4922 64. Added qualify_domain to the redirect router, to override the global
4925 65. If a pathologically long header line contained very many addresses (the
4926 report of this problem mentioned 10 000) and each of them was rewritten,
4927 Exim could use up a very large amount of memory. (It kept on making new
4928 copies of the header line as it rewrote, and never released the old ones.)
4929 At the expense of a bit more processing, the header rewriting function has
4930 been changed so that it no longer eats memory in this way.
4932 66. The generation of the Received: header has been moved from the time that a
4933 message starts to be received, to the time that it finishes. The timestamp
4934 in the Received: header should now be very close to that of the <= log
4935 line. There are two side-effects of this change:
4937 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
4938 logged header lines no longer include the local Received: line, because
4939 it has not yet been created. The same applies to a copy of the message
4940 that is returned to a non-SMTP sender when a message is rejected.
4942 (b) When a filter file is tested using -bf, no additional Received: header
4943 is added to the test message. After some thought, I decided that this
4946 This change does not affect the value of $received_for. It is still set
4947 after address rewriting, but before local_scan() is called.
4949 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
4951 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
4952 gave an unhelpful panic error message, and a defer error. I have managed to
4953 change this behaviour so that it now rejects any supplied certificate,
4954 which seems right, as the list of acceptable certificates is empty.
4956 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
4957 gave an unhelpful defer error. I have not managed to make this reject any
4958 supplied certificates, but the error message it gives is "no certificate
4959 supplied", which is not helpful.
4961 70. exigrep's output now also includes lines that are not associated with any
4962 message, but which match the given pattern. Implemented by a patch from
4963 Martin Sluka, which also tidied up the Perl a bit.
4965 71. Recipient callout verification, like sender verification, was using <> in
4966 the MAIL FROM command. This isn't really the right thing, since the actual
4967 sender may affect whether the remote host accepts the recipient or not. I
4968 have changed it to use the actual sender in the callout; this means that
4969 the cache record is now keyed on a recipient/sender pair, not just the
4970 recipient address. There doesn't seem to be a real danger of callout loops,
4971 since a callout by the remote host to check the sender would use <>.
4972 [SEE ABOVE: changed after hitting problems.]
4974 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
4975 temporary errors. However, in the case of such a code being given after
4976 the end of a data transmission (i.e. after ".") Exim was failing to write
4977 a retry record for the message. (Yes, there was some broken host that was
4978 actually sending 8xx at this point.)
4980 73. An unknown lookup type in a host list could cause Exim to panic-die when
4981 the list was checked. (An example that provoked this was putting <; in the
4982 middle of a list instead of at the start.) If this happened during a DATA
4983 ACL check, a -D file could be left lying around. This kind of configuration
4984 error no longer causes Exim to die; instead it causes a defer errror. The
4985 incident is still logged to the main and panic logs.
4987 74. Buglet left over from Exim 3 conversion. The message "too many messages
4988 in one connection" was written to the rejectlog but not the mainlog, except
4989 when address rewriting (yes!) was being logged.
4991 75. Added write_rejectlog option.
4993 76. When a system filter was run not as root (that is, when system_filter_user
4994 was set), the values of the $n variables were not being returned to the
4995 main process; thus, they were not subsequently available in the $sn
4998 77. Added +return_path_on_delivery log selector.
5000 78. A connection timeout was being treated differently from recipients deferred
5001 when testing hosts_max_try with a message that was older than the host's
5002 retry timeout. (The host should not be counted, thus allowing all hosts to
5003 be tried at least once before bouncing.) This may have been the cause of an
5004 occasionally reported bug whereby a message would remain on the queue
5005 longer than the retry timeout, but would be bounced if a delivery was
5006 forced. I say "may" because I never totally pinned down the problem;
5007 setting up timeout/retry tests is difficult. See also the next item.
5009 79. The ultimate address timeout was not being applied to errors that involved
5010 a combination of host plus message (for example, a timeout on a MAIL
5011 command). When an address resolved to a number of possible hosts, and they
5012 were not all tried for each delivery (e.g. because of hosts_max_try), a
5013 message could remain on the queue longer than the retry timeout.
5015 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
5018 81. Fixed an obscure SMTP outgoing bug which required at least the following
5019 conditions: (a) there was another message waiting for the same server;
5020 (b) the server returned 5xx to all RCPT commands in the first message so
5021 that the message was not completed; (c) the server dropped the connection
5022 or gave a negative response to the RSET that Exim sends to abort the
5023 transaction. The observed case was a dropped connection after DATA that had
5024 been sent in pipelining mode. That is, the server had advertised PIPELINING
5025 but was not implementing it correctly. The effect of the bug was incorrect
5026 behaviour, such as trying another host, and this could lead to a crash.
5032 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
5033 and daemon.c were passed as pointers to ints; they should have been
5034 pointers to socklen_t variables (which are typically unsigned ints).
5036 2. Some signed/unsigned type warnings in the os.c file for Linux have been
5039 3. Fixed a really odd bug that affected only the testing scheme; patching a
5040 certain fixed string in the binary changed the value of another string that
5041 happened to be identical to the end of the original first string.
5043 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
5044 name", it returns that address as the IP address. On some operating
5045 systems (e.g. Solaris), it also passes back the IP address string as the
5046 "host name". However, on others (e.g. Linux), it passes back an empty
5047 string. Exim wasn't checking for this, and was changing the host name to an
5048 empty string, assuming it had been canonicized.
5050 5. Although rare, it is permitted to have more than one PTR record for a given
5051 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
5052 all the names associated with an address, because they do in Solaris.
5053 However, it seems that they do not in Linux for data that comes from the
5054 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
5055 I found this out when I moved to a new Linux workstation and tried to run
5056 the Exim test suite.
5058 To get round this problem I have changed the code so that it now does its
5059 own call to the DNS to look up PTR records when searching for a host name.
5060 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
5061 addresses that are only in /etc/hosts are still found.
5063 This behaviour is, however, controlled by an option called host_lookup_
5064 order, which defaults to "bydns:byaddr". If people want to use the other
5065 order, or indeed, just use one or the other means of lookup, they can
5066 specify it in this variable.
5068 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
5069 some operating systems, this comes back from gethostbyaddr() as an empty
5070 string, and this is what Exim used to test for. However, it seems that in
5071 other systems, "." is yielded. Exim now tests for this case too.
5073 7. The values of check_spool_space and check_log_space are now held internally
5074 as a number of kilobytes instead of an absolute number of bytes. If a
5075 numbers is specified without 'K' or 'M', it is rounded up to the nearest
5076 kilobyte. This means that much larger values can be stored.
5078 8. Exim monitor: an attempt to get the action menu when not actually pointing
5079 at a message produces an empty menu entitled "No message selected". This
5080 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
5081 no entries in it ("Shell widget menu has zero width and/or height"). So I
5082 have added a single, blank menu entry in this case.
5084 9. Added ${quote_local_part.
5086 10. MIME decoding is now applied to the contents of Subject: header lines when
5089 11. Now that a reference to $sender_host_address automatically causes a reverse
5090 lookup to occur if necessary (4.13/18), there is no need to arrange for a
5091 host lookup before query-style lookups in lists that might use this
5092 variable. This has therefore been abolished, and the "net-" prefix is no
5093 longer necessary for query-style lookups.
5095 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
5096 have been a typo for LFLAGS, so it has been changed.
5098 13. The install script calls Exim with "-C /dev/null" in order to find the
5099 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
5100 to be output. Howeve, since Exim outputs its version number before the
5101 error, it didn't break the script. It just looked ugly. I fixed this by
5102 always allowing "-C /dev/null" if the caller is root.
5104 14. Ignore overlarge ACL variable number when reading spool file - insurance
5105 against a later release with more variables having written the file.
5107 15. The standard form for an IPv6 address literal was being rejected by EHLO.
5108 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
5109 this, as well as the form without the "IPv6" on the front.
5111 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
5112 OS/Makefile-Darwin file.
5114 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
5115 only to LDAP libraries that do not have LDAP_OPT_DEREF.
5117 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
5118 variable. However, some OS use ints for inodes. I've added cast to long int
5119 to get rid of the compiler warning.
5121 19. I had forgotten to lock out "/../" in configuration file names when
5122 ALT_CONFIG_PREFIX was set.
5124 20. Routers used for verification do not need to specify transports. However,
5125 if such a router generated a host list, and callout was configured, Exim
5126 crashed, because it could not find a port number from the (non-existent)
5127 transport. It now assumes port 25 in this circumstance.
5129 21. Added the -t option to exigrep.
5131 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
5132 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
5133 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
5134 them is set, LOOKUP_LSEARCH is forced.
5136 23. "exim -bV" now outputs a list of lookups that are included in the binary.
5138 24. Added sender and host information to the "rejected by local_scan()" log
5139 line; previously there was no indication of these.
5141 25. Added .include_if_exists.
5143 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
5144 Linux. It turns out that not all file systems support this. Apparently some
5145 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
5146 do it.) To cope with this, the error EINVAL, which means that sync-ing is
5147 not supported on the file descriptor, is now ignored when Exim is trying to
5148 sync a directory. This applies only to Linux.
5150 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
5152 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
5153 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
5156 29. Added support for maildirsize files from supplied patch (modified a bit).
5158 30. The use of :fail: followed by an empty string could lead Exim to respond to
5159 sender verification failures with (e.g.):
5161 550 Verification failed for <xxx>
5162 550 Sender verify failed
5164 where the first response line was missing the '-' that indicates it is not
5165 the final line of the response.
5167 31. The loop for finding the name of the user that called Exim had a hardwired
5168 limit of 10; it now uses the value of finduser_retries, which is used for
5169 all other user lookups.
5171 32. Added $received_count variable, available in data and not_smtp ACLs, and at
5174 33. Exim was neglecting to zero errno before one call of strtol() when
5175 expanding a string and expecting an integer value. On some systems this
5176 resulted in spurious "integer overflow" errors. Also, it was casting the
5177 result into an int without checking.
5179 34. Testing for a connection timeout using "timeout_connect" in the retry rules
5180 did not work. The code looks as if it has *never* worked, though it appears
5181 to have been documented since at least releast 1.62. I have made it work.
5183 35. The "timeout_DNS" error in retry rules, also documented since at least
5184 1.62, also never worked. As it isn't clear exactly what this means, and
5185 clearly it isn't a major issue, I have abolished the feature by treating it
5186 as "timeout", and writing a warning to the main and panic logs.
5188 36. The display of retry rules for -brt wasn't always showing the error code
5191 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
5192 timeout_connect_A, timeout_connect_MX.
5194 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
5195 to the empty sender.
5197 39. The daemon was not analysing the content of -oX till after it had closed
5198 stderr and disconnected from the controlling terminal. This meant that any
5199 syntax errors were only noted on the panic log, and the return code from
5200 the command was 0. By re-arranging the code a little, I've made the
5201 decoding happen first, so such errors now appear on stderr, and the return
5202 code is 1. However, the actual setting up of the sockets still happens in
5203 the disconnected process, so errors there are still only recorded on the
5206 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
5207 connections (as happens on some IP stacks) was logged at start up time as
5208 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
5209 it from "IPv6 and IPv4", which means that two separate sockets are being
5212 41. The debug output for gethostbyname2() or getipnodebyname() failures now
5213 says whether AF_INET or AF_INET6 was passed as an argument.
5215 42. Exiwhat output was messed up when time zones were included in log
5218 43. Exiwhat now gives more information about the daemon's listening ports,
5219 and whether -tls-on-connect was used.
5221 44. The "port" option of the smtp transport is now expanded.
5223 45. A "message" modifier in a "warn" statement in a non-message ACL was being
5224 silently ignored. Now an error message is written to the main and panic
5227 46. There's a new ACL modifier called "logwrite" which writes to a log file
5228 as soon as it is encountered.
5230 47. Added $local_user_uid and $local_user_gid at routing time.
5232 48. Exim crashed when trying to verify a sender address that was being
5235 49. Exim was recognizing only a space character after ".include". It now also
5236 recognizes a tab character.
5238 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
5239 extracting the relevant information from the specification. The man page no
5240 longer contains scrambled data for the -d option, and I've added a section
5241 at the front about calling Exim under different names.
5243 51. Added "extra_headers" argument to the "mail" command in filter files.
5245 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
5248 53. Installed eximstats 1.29.
5250 54. Added transport_filter_timeout as a generic transport option.
5252 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
5253 Cc: header lines. This was required by RFC 822, but it not required by RFC
5256 56. Exim used to add From:, Date:, and Message-Id: header lines to any
5257 incoming messages that did not have them. Now it does so only if the
5258 message originates locally, that is, if there is no associated remote host
5259 address. When Resent- header lines are present, this applies to the Resent-
5260 lines rather than the non-Resent- lines.
5262 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
5263 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
5265 58. Messages for configuration errors now include the name of the main
5266 configuration file - useful now that there may be more than one file in a
5267 list (.included file names were always shown).
5269 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
5270 for those rare installations that do not start the daemon as root or run it
5271 setuid root. I've cut out the call to initgroups() if the daemon is not
5274 60. The Exim user and group can now be bound into the binary as text strings
5275 that are looked up at the start of Exim's processing.
5277 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
5279 62. Added $mailstore_basename variable.
5281 63. Installed patch to sieve.c from Michael Haardt.
5283 64. When Exim failed to open the panic log after failing to open the main log,
5284 the original message it was trying to log was written to stderr and debug
5285 output, but if they were not available (the usual case in production), it
5286 was lost. Now it is written to syslog before the two lines that record the
5287 failures to open the logs.
5289 65. Users' Exim filters run in subprocesses under the user's uid. It is
5290 possible for a "deliver" command or an alias in a "personal" command to
5291 provoke an address rewrite. If logging of address rewriting is configured,
5292 this fails because the process is not running as root or exim. There may be
5293 a better way of dealing with this, but for the moment (because 4.30 needs
5294 to be released), I have disabled address rewrite logging when running a
5295 filter in a non-root, non-exim process.
5301 1. The buildconfig auxiliary program wasn't quoting the value set for
5302 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5303 not defined. This bug was masked in 4.22 by the effect that was fixed in
5306 2. Some messages that were rejected after a message id was allocated were
5307 shown as "incomplete" by exigrep. It no longer does this for messages that
5308 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5310 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5311 have allow_domain_literals set, the ID did not get logged in the <= line.
5312 Domain literals are now always recognized in Message-ID: header lines.
5314 4. The first argument for a ${extract expansion item is the key name or field
5315 number. Leading and trailing spaces in this item were not being ignored,
5316 causing some misleading effects.
5318 5. When deliver_drop_privilege was set, single queue runner processes started
5319 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5320 same command in the process it spins off) were not dropping privilege.
5322 6. When the daemon running as "exim" started a queue runner, it always
5323 re-executed Exim in the spun-off process. This is a waste of effort when
5324 deliver_drop_privilege is set. The new process now just calls the
5325 queue-runner function directly.
5331 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5334 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5335 ignored. Though the use of -oP was forcing the writing of a pid file, it
5336 was always written to the default place.
5338 3. If the message "no IP address found for host xxxx" is generated during
5339 incoming verification, it is now followed by identification of the incoming
5340 connection (so you can more easily find what provoked it).
5342 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5344 5. Added some features to "harden" Exim a bit more against certain attacks:
5346 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5347 be put in Local/Makefile. This is like the never_users runtime option,
5348 but it cannot be overridden. The default setting is "root".
5350 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5351 prefix string with which any file named in a -C command line option
5354 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5355 is retained for -C and -D only if the caller of Exim is root. Without
5356 it, the exim user may also use -C and -D and retain privilege.
5358 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5359 command line option is disabled.
5361 6. Macro names set by the -D option must start with an upper case letter, just
5362 like macro names defined in the configuration file.
5364 7. Added "dereference=" facility to LDAP.
5366 8. Two instances of the typo "uknown" in the source files are fixed.
5368 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5369 the Configure-Makefile script screwed up while processing it.
5371 10. Incorporated PCRE 4.4.
5373 11. The SMTP synchronization check was not operating right at the start of an
5374 SMTP session. For example, it could not catch a HELO sent before the client
5375 waited for the greeting. There is now a check for outstanding input at the
5376 point when the greeting is written. Because of the duplex, asynchronous
5377 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5378 way, but not yet received, when the check is performed.
5380 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5381 on TCP/IP sockets, because this apparently causes some broken clients to
5384 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5385 unchanged) from the Cygwin maintainer.
5387 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5388 was supported instead of testing for mbx. Effectively a typo.
5390 15. The spa authenticator server code was not checking that the input it
5391 received was valid base64.
5393 16. The debug output line for the "set" modifier in ACLs was not showing the
5394 name of the variable that was being set.
5396 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5398 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5399 lookup on its own. Something else was needed to trigger the lookup. For
5400 example, a match in host_lookup or the need for a host name in a host list.
5401 Now, if $sender_host_name is referenced and the host name has not yet been
5402 looked up, a lookup is performed. If the lookup fails, the variable remains
5403 empty, and $host_lookup_failed is set to "1".
5405 19. Added "eqi" as a case-independent comparison operator.
5407 20. The saslauthd authentication condition could segfault if neither service
5408 nor realm was specified.
5410 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5411 error message that was logged was misleading, and incoming SMTP
5412 connections were dropped. The message is now more accurate, and temporary
5413 errors are given to SMTP connections.
5415 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5416 (except RSET) with a 421 error, until QUIT is received. However, it was
5417 failing to send a response to QUIT.
5419 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5420 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5421 ACL is now run after the helo_try_verify_hosts code.
5423 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5424 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5425 case-independent, so other case variants are also recognized). Apparently
5426 some systems use these upper case variants.
5428 25. If more than two messages were waiting for the same host, and a transport
5429 filter was specified for the transport, Exim sent two messages over the
5430 same TCP/IP connection, and then failed with "socket operation on non-
5431 socket" when it tried to send the third.
5433 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5435 27. The extern definition of crypt16() in expand.c was not being excluded when
5436 the OS had its own crypt16() function.
5438 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5439 as a preferred synonym for return_size_limit, both as an option and as an
5442 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5444 30. Changed the default configuration ACL to relax the local part checking rule
5445 for addresses that are not in any local domains. For these addresses,
5446 slashes and pipe symbols are allowed within local parts, but the sequence
5447 /../ is explicitly forbidden.
5449 31. SPA server authentication was not clearing the challenge buffer before
5452 32. log_message in a "warn" ACL statement was writing to the reject log as
5453 well as to the main log, which contradicts the documentation and doesn't
5454 seem right (because no rejection is happening). So I have stopped it.
5456 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
5457 However, I am unable to do any testing of this.
5459 34. Fixed an infelicity in the appendfile transport. When checking directories
5460 for a mailbox, to see if any needed to be created, it was accidentally
5461 using path names with one or more superfluous leading slashes; tracing
5462 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
5464 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
5465 contents are added to the log line that is written for every discarded
5466 recipient. (Previously a log_message setting was ignored.)
5468 36. The ${quote: operator now quotes the string if it is empty.
5470 37. The install script runs exim in order to find its version number. If for
5471 some reason other than non-existence or emptiness, which it checks, it
5472 could not run './exim', it was installing it with an empty version number,
5473 i.e. as "exim-". This error state is now caught, and the installation is
5476 38. An argument was missing from the function that creates an error message
5477 when Exim fails to connect to the socket for saslauthd authentication.
5478 This could cause Exim to crash, or give a corrupted message.
5480 39. Added isip, isip4, and isip6 to ${if conditions.
5482 40. The ACL variables $acl_xx are now saved with the message, and can be
5483 accessed later in routers, transports, and filters.
5485 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
5486 strings in the file are not string-expanded.
5488 42. If a MAIL command specified a SIZE value that was too large to fit into an
5489 int variable, the check against message_size_limit failed. Such values are
5490 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
5491 day this will have to be increased, but I don't think I want to be around
5492 when emails are that large.
5499 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
5500 iconv() is not standard in FreeBSD.
5502 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
5503 IPv6 enabled. The observed symptom was a segmentation fault on return from
5504 the function os_common_find_running_interfaces() in src/os.c.
5506 3. In the check_special_case() function in daemon.c I had used "errno" as an
5507 argument name, which causes warnings on some systems. This was basically a
5508 typo, since it was named "eno" in the comments!
5510 4. The code that waits for the clock to tick (at a resolution of some fraction
5511 of a second) so as to ensure message-id uniqueness was always waiting for
5512 at least one whole tick, when it could have waited for less. [This is
5513 almost certainly not relevant at current processor speeds, where it is
5514 unlikely to ever wait at all. But we try to future-proof.]
5516 5. The function that sleeps for a time interval that includes fractions of a
5517 second contained a race. It did not block SIGALRM between setting the
5518 timer, and suspending (a couple of lines later). If the interval was short
5519 and the sigsuspend() was delayed until after it had expired, the suspension
5520 never ended. On busy systems this could lead to processes getting stuck for
5523 6. Some uncommon configurations may cause a lookup to happen in a queue runner
5524 process, before it forks any delivery processes. The open lookup caching
5525 mechanism meant that the open file or database connection was passed into
5526 the delivery process. The problem was that delivery processes always tidy
5527 up cached lookup data. This could cause a problem for the next delivery
5528 process started by the queue runner, because the external queue runner
5529 process does not know about the closure. So the next delivery process
5530 still has data in the lookup cache. In the case of a file lookup, there was
5531 no problem because closing a file descriptor in a subprocess doesn't affect
5532 the parent. However, if the lookup was caching a connection to a database,
5533 the connection was closed, and the second delivery process was likely to
5534 see errors such as "PGSQL: query failed: server closed the connection
5535 unexpectedly". The problem has been fixed by closing all cached lookups
5536 in a queue runner before running a delivery process.
5538 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
5539 seem to have the "const" qualifier which it has on other OS. I've
5542 8. Change 4.21/2 was too strict. It is only if there are two authenticators
5543 *of the same type* (client or server) with the same public name that an
5544 error should be diagnosed.
5546 9. When Exim looked up a host name for an IP address, but failed to find the
5547 original IP address when looking up the host name (a safety check), it
5548 output the message "<ip address> does not match any IP for NULL", which was
5549 confusing, to say the least. The bug was that the host name should have
5550 appeared instead of "NULL".
5552 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
5553 user that is built into the binary, and the -C or -D options is used, root
5554 privilege is dropped before the configuration file is read. In addition,
5555 logging is switched to stderr instead of the normal log files. If the
5556 configuration then re-defines the Exim user, the unprivileged environment
5557 is probably not what is expected, so Exim logs a panic warning message (but
5560 However, if deliver_drop_privilege is set, the unprivileged state may well
5561 be exactly what is intended, so the warning has been cut out in that case,
5562 and Exim is allowed to try to write to its normal log files.
5568 1. smtp_return_error_details was not giving details for temporary sender
5569 or receiver verification errors.
5571 2. Diagnose a configuration error if two authenticators have the same public
5574 3. Exim used not to create the message log file for a message until the first
5575 delivery attempt. This could be confusing when incoming messages were held
5576 for policy or load reasons. The message log file is now created at the time
5577 the message is received, and an initial "Received" line is written to it.
5579 4. The automatically generated man page for command line options had a minor
5580 bug that caused no ill effects; however, a more serious problem was that
5581 the procedure for building the man page automatically didn't always
5582 operate. Consequently, release 4.20 contains an out-of-date version. This
5583 shouldn't happen again.
5585 5. When building Exim with embedded Perl support, the script that builds the
5586 Makefile was calling 'perl' to find its compile-time parameters, ignoring
5587 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
5589 6. The freeze_tell option was not being used for messages that were frozen on
5590 arrival, either by an ACL or by local_scan().
5592 7. Added the smtp_incomplete_transaction log selector.
5594 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
5595 was accepting AUTH without a new EHLO.
5597 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
5598 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
5601 10. Logging of TCP/IP connections (when configured) now happens in the main
5602 daemon process instead of the child process, so that the TCP/IP connection
5603 count is more accurate (but it can never be perfect).
5605 11. The use of "drop" in a nested ACL was not being handled correctly in the
5606 outer ACL. Now, if condition failure induced by the nested "drop" causes
5607 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
5608 or "require"), the connection is dropped.
5610 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
5611 that yield "discard" can now be used with an "accept" or a "discard" verb,
5612 but an error is generated for any others (because I can't see a useful way
5613 to define what should happen).
5615 13. When an ACL is read dynamically from a file (or anywhere else), the lines
5616 are now processed in the same way as lines in the Exim configuration file.
5617 In particular, continuation lines are supported.
5619 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
5621 15. Added -ti meaning -t -i.
5623 16. Check for letters, digits, hyphens, and dots in the names of dnslist
5624 domains, and warn by logging if others are found.
5626 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
5627 returned from GIFCONF when Exim is trying to find the list of interfaces on
5628 a host. The code in os.c has been modified to copy each ifreq to an aligned
5629 structure in all cases.
5631 Also, in some cases, the returned ifreq's were being copied to a 'struct
5632 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
5633 means the last couple of bytes of an IPv6 address could be chopped if the
5634 ifreq contained only a normal sockaddr (14 bytes storage).
5636 18. Named domain lists were not supported in the hosts_treat_as_local option.
5637 An entry such as +xxxx was not recognized, and was treated as a literal
5640 19. Ensure that header lines added by a DATA ACL are included in the reject log
5641 if the ACL subsequently rejects the message.
5643 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
5644 MD5 (which is deprecated).
5646 21. When testing a filter file using -bf, Exim was writing a message when it
5647 took the sender from a "From " line in the message, but it was not doing so
5648 when it took $return_path from a Return-Path: header line. It now does.
5650 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
5651 with a valid header line field name (a series of printing characters
5652 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
5654 23. Changed "disc" in the source to "disk" to conform to the documentation and
5655 the book and for uniformity.
5657 24. Ignore Sendmail's -Ooption=value command line item.
5659 25. When execve() failed while trying to run a command in a pipe transport,
5660 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
5661 could be confused with a return value of 69 from the command itself. This
5662 has been changed to 127, the value the shell returns if it is asked to run
5663 a non-existent command. The wording for the related log line suggests a
5664 non-existent command as the problem.
5666 26. If received_header_text expands to an empty string, do not add a Received:
5667 header line to the message. (Well, it adds a token one on the spool, but
5668 marks it "old" so that it doesn't get used or transmitted.)
5670 27. Installed eximstats 1.28 (addition of -nt option).
5672 28. There was no check for failure on the call to getsockname() in the daemon
5673 code. This can fail if there is a shortage of resources on the system, with
5674 ENOMEM, for example. A temporary error is now given on failure.
5676 29. Contrary to the C standard, it seems that in some environments, the
5677 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
5678 program. Exim now does this explicitly; it affects the formatting of
5679 timestamps using strftime().
5681 30. If exiqsumm was given junk data, it threw up some uninitialized variable
5682 complaints. I've now initialized all the variables, to avoid this.
5684 32. Header lines added by a system filter were not being "seen" during
5685 transport-time rewrites.
5687 33. The info_callback() function passed to OpenSSL is set up with type void
5688 (*)(SSL *, int, int), as described somewhere. However, when calling the
5689 function (actually a macro) that sets it up, the type void(*)() is
5690 expected. I've put in a cast to prevent warnings from picky compilers.
5692 34. If a DNS black list lookup found a CNAME record, but there were no A
5693 records associated with the domain it pointed at, Exim crashed.
5695 35. If a DNS black list lookup returned more than one A record, Exim ignored
5696 all but the first. It now scans all returned addresses if a particular IP
5697 value is being sought. In this situation, the contents of the
5698 $dnslist_value variable are a list of all the addresses, separated by a
5701 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
5702 to accept a host name and all its aliases if the forward lookup for any of
5703 them yielded the IP address of the incoming connection. Now it accepts only
5704 those names whose forward lookup yields the correct IP address. Any other
5705 names are discarded. This closes a loophole whereby a rogue DNS
5706 administrator could create reverse DNS records to break through a
5707 wildcarded host restriction in an ACL.
5709 37. If a user filter or a system filter that ran in a subprocess used any of
5710 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
5711 the wrong values were passed to the pipe command ($thisaddress had the
5712 value of $0, $0 had the value of $1, etc). This bug was introduced by
5713 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
5715 38. Improved the line breaking for long SMTP error messages from ACLs.
5716 Previously, if there was no break point between 40 and 75 characters, Exim
5717 left the rest of the message alone. Two changes have been made: (a) I've
5718 reduced the minimum length to 35 characters; (b) if it can't find a break
5719 point between 35 and 75 characters, it looks ahead and uses the first one
5720 that it finds. This may give the occasional overlong line, but at least the
5721 remaining text gets split now.
5723 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
5724 file descriptors might be low, and that setting 1000 would always raise it.
5725 It turns out that in some environments, the limit is already over 1000 and
5726 that lowering it causes trouble. So now Exim takes care not to decrease it.
5728 40. When delivering a message, the value of $return_path is set to $sender_
5729 address at the start of routing (routers may change the value). By an
5730 oversight, this default was not being set up when an address was tested by
5731 -bt or -bv, which affected the outcome if any router or filter referred to
5734 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
5735 log only when "message" or "log_message" are set. However, if one of the
5736 conditions was an address verification, or a call to a nested ACL, the
5737 messages generated by the underlying test were being passed through. This
5738 no longer happens. The underlying message is available in $acl_verify_
5739 message for both "message" and "log_message" expansions, so it can be
5740 passed through if needed.
5742 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
5743 new expansion $bh_ to give the encoded byte string without charset
5744 translation. Translation happens only if iconv() is available; HAVE_ICONV
5745 indicates this at build time. HEADERS_CHARSET gives the charset to
5746 translate to; headers_charset can change it in the configuration, and
5747 "headers charset" can change it in an individual filter file.
5749 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
5750 that creates RFC 2047 encoded "words" labels them as that charset instead
5751 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
5752 expansion operator; (ii) when Exim creates a From: line for a local
5753 message; (iii) when a header line is rewritten to include a "phrase" part.
5755 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
5756 buggy, causing it to skip the first lines of messages whose message ID
5757 ended in 'D'. This would not have bitten before Exim release 4.14, because
5758 message IDs were unlikely to end in 'D' before then. The effect was to have
5759 incorrect size information for certain domains.
5761 45. #include "config.h" was missing at the start of the crypt16.c module. This
5762 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
5765 46. If there was a timeout during a "random" callout check, Exim treated it as
5766 a failure of the random address, and carried on sending RSET and the real
5767 address. If the delay was just some slowness somewhere, the response to the
5768 original RCPT would be taken as a response to RSET and so on, causing
5769 mayhem of various kinds.
5771 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
5772 when I implemented it. It didn't allow for the fact that some option values
5773 may legitimatetly be negative (e.g. size_addition), and it didn't even do
5774 the right test for positive values.
5776 48. Domain names in DNS records are case-independent. Exim always looks them up
5777 in lower case. Some resolvers return domain names in exactly the case they
5778 appear in the zone file, that is, they may contain uppercase letters. Not
5779 all resolvers do this - some return always lower case. Exim was treating a
5780 change of case by a resolver as a change of domain, similar to a widening
5781 of a domain abbreviation. This triggered its re-routing code and so it was
5782 trying to route what was effectively the same domain again. This normally
5783 caused routing to fail (because the router wouldn't handle the domain
5784 twice). Now Exim checks for this case specially, and just changes the
5785 casing of the domain that it ultimately uses when it transmits the message
5788 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
5791 50. If a filter generated a file delivery with a non-absolute name (possible if
5792 no home directory exists for the router), the forbid_file option was not
5795 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
5796 the existing equality matching.
5798 52. Exim was using ints instead of ino_t variables in some places where it was
5799 dealing with inode numbers.
5801 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
5802 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
5803 called TMPDIR, and if it finds it is different, it changes its value.
5805 54. The smtp_printf() function is now made available to local_scan() so
5806 additional output lines can be written before returning. There is also an
5807 smtp_fflush() function to enable the detection of a dropped connection.
5808 The variables smtp_input and smtp_batched_input are exported to
5811 55. Changed the default runtime configuration: the message "Unknown user"
5812 has been removed from the ACL, and instead placed on the localuser router,
5813 using the cannot_route_message feature. This means that any verification
5814 failures that generate their own messages won't get overridden. Similarly,
5815 the "Unrouteable address" message that was in the ACL for unverifiable
5816 relay addresses has also been removed.
5818 56. Added hosts_avoid_esmtp to the smtp transport.
5820 57. The exicyclog script was not checking for the esoteric option
5821 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
5822 will work only if exicyclog is run under the appropriate euid.
5824 58. Following a discussion on the list, the rules by which Exim recognises line
5825 endings on incoming messages have been changed. The -dropcr and drop_cr
5826 options are now no-ops, retained only for backwards compatibility. The
5827 following line terminators are recognized: LF CRLF CR. However, special
5828 processing applies to CR:
5830 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
5831 nor a local message in the state where . is a terminator.
5833 (ii) If a bare CR is encountered in a header line, an extra space is added
5834 after the line terminator so as not to end the header. The reasoning
5835 behind this is that bare CRs in header lines are most likely either
5836 to be mistakes, or people trying to play silly games.
5838 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
5839 was being incorrectly given as 18 bytes larger than it should have been.
5840 This is a VOB (very old bug).
5842 60. This may never have affected anything current, but just in case it has:
5843 When the local host is found other than at the start of a list of hosts,
5844 the local host, those with the same MX, and any that follow, are discarded.
5845 When the list in question was part of a longer list of hosts, the following
5846 hosts (not currently being processed) were also being discarded. This no
5847 longer happens. I'm not sure if this situation could ever has previously
5850 61. Added the "/MX" feature to lists of hosts in the manualroute and query
5853 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
5854 header. This is something that is recommended in a new Internet Draft, and
5855 is something that is documented as being done by Sendmail. There are two
5856 possible values. For messages generated by the autoreply transport, Exim
5859 Auto-Submitted: auto-replied
5861 whereas for all other generated messages (e.g. bounces) it adds
5863 Auto-Submitted: auto-generated
5865 63. The "personal" condition in filters now includes a test for the
5866 Auto-Submitted: header. If it contains the string "auto-" the message it
5867 not considered personal.
5869 64. Added rcpt_include_affixes as a generic transport option.
5871 65. Added queue_only_override (default true).
5873 66. Added the syslog_duplication option.
5875 67. If what should have been the first header line of a message consisted of
5876 a space followed by a colon, Exim was mis-interpreting it as a header line.
5877 It isn't of course - it is syntactically invalid and should therefore be
5878 treated as the start of the message body. The misbehaviour could have
5879 caused a number of strange effects, including loss of data in subsequent
5880 header lines, and spool format errors.
5882 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
5883 client host had authenticated. This control can now be exercised by an ACL
5884 for more flexibility.
5886 69. By default, callouts do not happen when testing with -bh. There is now a
5887 variant, -bhc, which does actually run the callout code, including
5888 consulting and updating the callout cache.
5890 70. Added support for saslauthd authentication, courtesy of Alexander
5893 71. If statvfs() failed on the spool or log directories while checking their
5894 size for availability, Exim confusingly gave the error "space shortage".
5895 Furthermore, in debugging mode it crashed with a floating point exception.
5896 These checks are done if check_{spool,log}_{space,inodes} are set, and when
5897 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
5898 serious problem, Exim now writes to the main and panic logs when this
5899 happens, with details of the failure. It then refuses to accept the
5900 incoming message, giving the message "spool directory problem" or "log
5901 directory problem" with a 421 code for SMTP messages.
5903 72. When Exim is about to re-exec itself, it ensures that the file descriptors
5904 0, 1, and 2 exist, because some OS complain for execs without them (see
5905 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
5906 descriptors. However, the code omitted to check that the open succeeded,
5907 causing mysterious errors if for some reason the permissions on /dev/null
5908 got screwed. Now Exim writes a message to the main and panic logs, and
5909 bombs out if it can't open /dev/null.
5911 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
5912 interact so that it is all more flexible. It is supposed to remain
5913 backwards compatible. Also added extra_local_interfaces.
5915 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
5916 to bomb out with an assertion failure - to the client this appears as a
5917 connection drop. This problem occurs in the part of the code that was taken
5918 from the Samba project. Fortunately, the assertion is in a very simple
5919 function, so I have fixed this by reproducing the function inline in the
5920 one place where it is called, and arranging for authentication to fail
5921 instead of killing the process with assert().
5923 75. The SPA client code was not working when the server requested OEM rather
5924 than Unicode encoding.
5926 76. Added code to make require_files with a specific uid setting more usable in
5927 the case where statting the file as root fails - usually a non-root-mounted
5928 NFS file system. When this happens and the failure is EACCES, Exim now
5929 forks a subprocess and does the per-uid checking as the relevant uid.
5931 77. Added process_log_path.
5933 78. If log_file_path was not explicitly set, a setting of check_log_space or
5934 check_log_inodes was ignored.
5936 79. If a space check for the spool or log partitions fails, the incident is now
5937 logged. Of course, in the latter case the data may get lost...
5939 80. Added the %p formatting code to string_format() so that it can be used to
5940 print addresses in debug_print(). Adjusted all the address printing in the
5941 debugging in store.c to use %p rather than %d.
5943 81. There was a concern that a line of code in smtp_in.c could overflow a
5944 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
5945 initially expressed, the concern was not well-founded, because trailing
5946 spaces are removed early. However, if the trailing spaces were followed by
5947 a NULL, they did not get removed, so the overflow was possible. Two fixes
5950 (a) I re-wrote the offending code in a cleaner fashion.
5951 (b) If an incoming SMTP command contains a NULL character, it is rejected
5954 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
5955 runs initgroups(), so that if the Exim user is in any additional groups,
5956 they will be used during message reception.
5962 The change log for 4.20 and earlier releases has been archived.
projects / exim.git / blob