1 Change log file for Exim from version 4.21
2 -------------------------------------------
7 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
9 PP/02 Make -n do something, by making it not do something.
10 When combined with -bP, the name of an option is not output.
12 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
15 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
16 $sender_host_name and config options to manage this, and basic check
19 PP/05 DSCP support for outbound connections.
25 PP/01 Handle short writes when writing local log-files.
26 In practice, only affects FreeBSD (8 onwards).
27 Bugzilla 1053, with thanks to Dmitry Isaikin.
29 NM/01 Bugzilla 949 - Documentation tweak
31 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
34 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
36 PP/02 Implemented gsasl authenticator.
38 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
40 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
41 `pkg-config foo` for cflags/libs.
43 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
44 with rest of GSASL and with heimdal_gssapi.
46 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
47 `pkg-config foo` for cflags/libs for the TLS implementation.
49 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
50 properties get this fed in as external SSF. A number of robustness
51 and debugging improvements to the cyrus_sasl authenticator.
53 PP/08 cyrus_sasl server now expands the server_realm option.
55 PP/09 Bugzilla 1214 - Log authentication information in reject log.
56 Patch by Jeremy Harris.
58 PP/10 Added dbmjz lookup type.
60 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
62 PP/12 MAIL args handles TAB as well as SP, for better interop with
63 non-compliant senders.
64 Analysis and variant patch by Todd Lyons.
66 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
67 Bug report from Lars Müller <lars@samba.org> (via SUSE),
68 Patch from Dirk Mueller <dmueller@suse.com>
70 PP/13 tls_peerdn now print-escaped for spool files.
71 Observed some $tls_peerdn in wild which contained \n, which resulted
72 in spool file corruption.
74 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
75 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
76 or write after TLS renegotiation, which otherwise led to messages
79 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
80 as a tracking header (ie: a signed header comes before the signature).
81 Patch from Wolfgang Breyha.
83 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
84 comma-sep list; embedded commas doubled.
86 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
88 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
90 Report and patch from Dmitry Banschikov.
92 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
93 Removed SSL_clear() after SSL_new() which led to protocol negotiation
94 failures. We appear to now support TLS1.1+ with Exim.
96 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
97 lets Exim select keys and certificates based upon TLS SNI from client.
98 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
99 before an outbound SMTP session. New log_selector, +tls_sni.
101 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
102 NULL dereference. Report and patch from Alun Jones.
104 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
105 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
106 Not seeing resolver debug output on NetBSD, but suspect this is a
107 resolver implementation change.
109 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
110 Left warnings. Added "eximon gdb" invocation mode.
112 PP/21 Defaulting "accept_8bitmime" to true, not false.
114 PP/22 Added -bw for inetd wait mode support.
116 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
117 locate the relevant includes and libraries. Made this the default.
119 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
120 Bugzilla 1246, report and most of solution from Tomasz Kusy.
122 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
123 This may cause build issues on older platforms.
125 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
126 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
127 gnutls_require_mac & gnutls_require_protocols (no longer supported).
128 Added SNI support via GnuTLS too.
129 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
131 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
133 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
134 Applied second patch from Janne, implementing suggestion to default
135 multiple-strings-in-record handling to match SPF spec.
137 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
139 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
140 read-only, out of scope).
141 Patch from Wolfgang Breyha, report from Stuart Northfield.
143 PP/29 Fix three issues highlighted by clang analyser static analysis.
144 Only crash-plausible issue would require the Cambridge-specific
145 iplookup router and a misconfiguration.
146 Report from Marcin Mirosław.
148 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
150 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
151 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
152 As part of this, removing so much warning spew let me fix some minor
153 real issues in debug logging.
155 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
156 assignment on my part. Fixed.
158 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
159 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
160 Janne Snabb (who went above and beyond: thank you).
162 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
163 string otherwise requires a connection and a bunch more work and it's
164 relatively easy to get wrong. Should also expose TLS library linkage
167 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
168 64-bit ${eval} (JH/03).
170 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
171 GNU libc to support some of the 64-bit stuff, should not lead to
172 conflicts. Defined before os.h is pulled in, so if a given platform
173 needs to override this, it can.
175 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
176 protection layer was required, which is not implemented.
177 Bugzilla 1254, patch from Wolfgang Breyha.
179 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
180 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
181 tls_dhparam take prime identifiers. Also unbreak combination of
182 OpenSSL+DH_params+TLSSNI.
184 PP/39 Disable SSLv2 by default in OpenSSL support.
190 PP/01 Solaris build fix for Oracle's LDAP libraries.
191 Bugzilla 1109, patch from Stephen Usher.
193 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
195 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
198 TF/02 Fix a couple more cases where we did not log the error message
199 when unlink() failed. See also change 4.74-TF/03.
201 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
202 lock up or crash if it happened to be inside a call to libc when it
203 got a SIGUSR1 from exiwhat.
205 The SIGUSR1 handler appends the current process status to the process
206 log which is later printed by exiwhat. It used to use the general
207 purpose logging code to do this, but several functions it calls are
208 not safe for signals.
210 The new output code in the SIGUSR1 handler is specific to the process
211 log, and simple enough that it's easy to inspect for signal safety.
212 Removing some special cases also simplifies the general logging code.
213 Removing the spurious timestamps from the process log simplifies
216 TF/04 Improved ratelimit ACL condition.
218 The /noupdate option has been deprecated in favour of /readonly which
219 has clearer semantics. The /leaky, /strict, and /readonly update modes
220 are mutually exclusive. The update mode is no longer included in the
221 database key; it just determines when the database is updated. (This
222 means that when you upgrde Exim will forget old rate measurements.)
224 Exim now checks that the per_* options are used with an update mode that
225 makes sense for the current ACL. For example, when Exim is processing a
226 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
227 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
228 must specify per_mail/readonly. If you omit the update mode it defaults to
229 /leaky where that makes sense (as before) or /readonly where required.
231 The /noupdate option is now undocumented but still supported for
232 backwards compatibility. It is equivalent to /readonly except that in
233 ACLs where /readonly is required you may specify /leaky/noupdate or
234 /strict/noupdate which are treated the same as /readonly.
236 A useful new feature is the /count= option. This is a generalization
237 of the per_byte option, so that you can measure the throughput of other
238 aggregate values. For example, the per_byte option is now equivalent
239 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
241 The per_rcpt option has been generalized using the /count= mechanism
242 (though it's more complicated than the per_byte equivalence). When it is
243 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
244 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
245 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
246 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
247 Note that using per_rcpt with a non-readonly update mode in more than
248 one ACL will cause the recipients to be double-counted. (The per_mail
249 and per_byte options don't have this problem.)
251 The handling of very low rates has changed slightly. If the computed rate
252 is less than the event's count (usually one) then this event is the first
253 after a long gap. In this case the rate is set to the same as this event's
254 count, so that the first message of a spam run is counted properly.
256 The major new feature is a mechanism for counting the rate of unique
257 events. The new per_addr option counts the number of different
258 recipients that someone has sent messages to in the last time period. It
259 behaves like per_rcpt if all the recipient addresses are different, but
260 duplicate recipient addresses do not increase the measured rate. Like
261 the /count= option this is a general mechanism, so the per_addr option
262 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
263 example, measure the rate that a client uses different sender addresses
264 with the options per_mail/unique=$sender_address. There are further
265 details in the main documentation.
267 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
269 TF/06 Removed a few PCRE remnants.
271 TF/07 Automatically extract Exim's version number from tags in the git
272 repository when doing development or release builds.
274 PP/02 Raise smtp_cmd_buffer_size to 16kB.
275 Bugzilla 879. Patch from Paul Fisher.
277 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
278 Heavily based on revision 40f9a89a from Simon Arlott's tree.
281 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
283 PP/05 Variable $av_failed, true if the AV scanner deferred.
284 Bugzilla 1078. Patch from John Horne.
286 PP/06 Stop make process more reliably on build failure.
287 Bugzilla 1087. Patch from Heiko Schlittermann.
289 PP/07 Make maildir_use_size_file an _expandable_ boolean.
290 Bugzilla 1089. Patch from Heiko Schlittermann.
292 PP/08 Handle ${run} returning more data than OS pipe buffer size.
293 Bugzilla 1131. Patch from Holger Weiß.
295 PP/09 Handle IPv6 addresses with SPF.
296 Bugzilla 860. Patch from Wolfgang Breyha.
298 PP/10 GnuTLS: support TLS 1.2 & 1.1.
300 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
303 PP/11 match_* no longer expand right-hand-side by default.
304 New compile-time build option, EXPAND_LISTMATCH_RHS.
305 New expansion conditions, "inlist", "inlisti".
307 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
309 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
311 PP/14 fix log_write() format string regression from TF/03.
312 Bugzilla 1152. Patch from Dmitry Isaikin.
318 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
320 PP/02 Harmonised TLS library version reporting; only show if debugging.
321 Layout now matches that introduced for other libraries in 4.74 PP/03.
323 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
325 PP/04 New "dns_use_edns0" global option.
327 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
330 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
331 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
333 TK/01 Updated PolarSSL code to 0.14.2.
334 Bugzilla 1097. Patch from Andreas Metzler.
336 PP/07 Catch divide-by-zero in ${eval:...}.
339 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
342 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
343 format-string attack -- SECURITY: remote arbitrary code execution.
345 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
346 time unintentionally subject to list matching rules, letting the header
347 cause arbitrary Exim lookups (of items which can occur in lists, *not*
348 arbitrary string expansion). This allowed for information disclosure.
350 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
351 INT_MIN/-1 -- value coerced to INT_MAX.
357 NM/01 Workround for PCRE version dependency in version reporting
360 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
361 This fixes portability to compilers other than gcc, notably
362 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
364 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
365 makefiles for portability to HP-UX and POSIX correctness.
367 PP/01 Permit LOOKUP_foo enabling on the make command-line.
368 Also via indented variable definition in the Makefile.
369 (Debugging by Oliver Heesakkers).
371 PP/02 Restore caching of spamd results with expanded spamd_address.
372 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
374 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
375 Improves build reliability. Fix from: Frank Elsner
377 NM/02 Fix wide character breakage in the rfc2047 coding
378 Fixes bug 1064. Patch from Andrey N. Oktyabrski
380 NM/03 Allow underscore in dnslist lookups
381 Fixes bug 1026. Patch from Graeme Fowler
383 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
384 Code patches from Adam Ciarcinski of NetBSD.
386 NM/04 Fixed exiqgrep to cope with mailq missing size issue
389 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
390 is logged, to avoid truncation. Patch from John Horne.
392 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
393 Patch from Jakob Hirsch.
395 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
396 SQL string expansion failure details.
397 Patch from Andrey Oktyabrski.
399 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
400 Patch from Simon Arlott.
402 PP/09 New lookups functionality failed to compile on old gcc which rejects
403 extern declarations in function scope.
404 Patch from Oliver Fleischmann
406 PP/10 Use sig_atomic_t for flags set from signal handlers.
407 Check getgroups() return and improve debugging.
408 Fixed developed for diagnosis in bug 927 (which turned out to be
411 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
412 Patch from Mark Zealey.
414 PP/12 Bugzilla 1056: Improved spamd server selection.
415 Patch from Mark Zealey.
417 PP/13 Bugzilla 1086: Deal with maildir quota file races.
418 Based on patch from Heiko Schlittermann.
420 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
421 Patch from Uwe Doering, sign-off by Michael Haardt.
423 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
424 variable declaration deep within a block. Bug and patch from
427 PP/15 lookups-Makefile IRIX compatibilty coercion.
429 PP/16 Make DISABLE_DKIM build knob functional.
431 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
432 Patch by Simon Arlott
434 TF/03 Fix valgrind.h portability to C89 compilers that do not support
435 variable argument macros. Our copy now differs from upstream.
441 TF/01 Failure to get a lock on a hints database can have serious
442 consequences so log it to the panic log.
444 TF/02 Log LMTP confirmation messages in the same way as SMTP,
445 controlled using the smtp_confirmation log selector.
447 TF/03 Include the error message when we fail to unlink a spool file.
449 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
450 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
451 for maintaining out-of-tree patches for some time.
453 PP/01 Bugzilla 139: Documentation and portability issues.
454 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
455 Handle per-OS dynamic-module compilation flags.
457 PP/02 Let /dev/null have normal permissions.
458 The 4.73 fixes were a little too stringent and complained about the
459 permissions on /dev/null. Exempt it from some checks.
460 Reported by Andreas M. Kirchwitz.
462 PP/03 Report version information for many libraries, including
463 Exim version information for dynamically loaded libraries. Created
464 version.h, now support a version extension string for distributors
465 who patch heavily. Dynamic module ABI change.
467 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
468 privilege escalation vulnerability whereby the Exim run-time user
469 can cause root to append content of the attacker's choosing to
472 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
475 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
476 If dropping privileges for untrusted macros, we disabled normal logging
477 on the basis that it would fail; for the Exim run-time user, this is not
478 the case, and it resulted in successful deliveries going unlogged.
479 Fixed. Reported by Andreas Metzler.
485 PP/01 Date: & Message-Id: revert to normally being appended to a message,
486 only prepend for the Resent-* case. Fixes regression introduced in
487 Exim 4.70 by NM/22 for Bugzilla 607.
489 PP/02 Include check_rfc2047_length in configure.default because we're seeing
490 increasing numbers of administrators be bitten by this.
492 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
494 PP/03 Bugzilla 994: added openssl_options main configuration option.
496 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
498 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
500 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
502 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
503 without a peer certificate, leading to a segfault because of an
504 assumption that peers always have certificates. Be a little more
505 paranoid. Problem reported by Martin Tscholak.
507 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
508 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
509 NB: ClamAV planning to remove STREAM in "middle of 2010".
510 CL also introduces -bmalware, various -d+acl logging additions and
511 more caution in buffer sizes.
513 PP/09 Implemented reverse_ip expansion operator.
515 PP/10 Bugzilla 937: provide a "debug" ACL control.
517 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
519 PP/12 Bugzilla 973: Implement --version.
521 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
523 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
525 PP/15 Bugzilla 816: support multiple condition rules on Routers.
527 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
528 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
529 ignore trailing whitespace.
531 JJ/02 prevent non-panic DKIM error from being sent to paniclog
533 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
536 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
537 Notification from Dr Andrew Aitchison.
539 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
540 ExtendedDetectionInfo response format.
541 Notification from John Horne.
543 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
546 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
547 XSL and documented dependency on system catalogs, with examples of how
550 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
553 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
554 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
555 configuration file which is writeable by the Exim user or group.
557 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
558 of configuration files to cover files specified with the -C option if
559 they are going to be used with root privileges, not just the default
562 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
563 option (effectively making it always true).
565 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
566 files to be used while preserving root privileges.
568 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
569 that rogue child processes cannot use them.
571 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
572 run-time user, instead of root.
574 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
575 Exim run-time user without dropping privileges.
577 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
578 result string, instead of calling string_vformat() twice with the same
581 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
582 for other users. Others should always drop root privileges if they use
583 -C on the command line, even for a whitelisted configure file.
585 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
587 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
593 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
594 $data_path, and $header_path variables; fixed documentation bugs and
597 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
598 exipick to access non-standard spools, including the "frozen" queue
601 NM/01 Bugzilla 965: Support mysql stored procedures.
602 Patch from Alain Williams
604 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
606 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
607 Patch from Andreas Metzler
609 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
610 Patch from Kirill Miazine
612 NM/05 Bugzilla 671: Added umask to procmail example.
614 JJ/03 installed exipick 20100323.0, fixing doc bug
616 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
617 directory. Notification and patch from Dan Rosenberg.
619 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
621 TK/02 Improve log output when DKIM signing operation fails.
623 MH/01 Treat the transport option dkim_domain as a colon separated
624 list, not as a single string, and sign the message with each element,
625 omitting multiple occurences of the same signer.
627 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
628 Bugzilla 985, 986. Patch by Simon Arlott
630 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
631 Patch by Simon Arlott
633 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
634 MBX locking. Notification from Dan Rosenberg.
640 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
642 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
644 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
646 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
648 NM/04 Bugzilla 915: Flag broken perl installation during build.
654 TK/01 Added patch by Johannes Berg that expands the main option
655 "spamd_address" if it starts with a dollar sign.
657 TK/02 Write list of recipients to X-Envelope-Sender header when building
658 the mbox-format spool file for content scanning (suggested by Jakob
661 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
662 (http://www.dcc-servers.net/) support via dccifd. Activated by
663 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
665 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
666 by Mark Daniel Reidel <mr@df.eu>.
668 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
669 When building exim an external PCRE library is now needed -
670 PCRE is a system library on the majority of modern systems.
671 See entry on PCRE_LIBS in EDITME file.
673 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
674 conversation. Added nologin parameter to request.
675 Patch contributed by Kirill Miazine.
677 TF/01 Do not log submission mode rewrites if they do not change the address.
679 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
681 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
682 log files in place. Contributed by Roberto Lima.
684 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
686 TF/03 Bugzilla 615: When checking the local_parts router precondition
687 after a local_part_suffix or local_part_prefix option, Exim now
688 does not use the address's named list lookup cache, since this
689 contains cached lookups for the whole local part.
691 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
692 Robert Millan. Documentation is in experimental-spec.txt.
694 TF/04 Bugzilla 668: Fix parallel build (make -j).
696 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
698 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
699 Patch provided by Jan Srzednicki.
701 TF/05 Leading white space used to be stripped from $spam_report which
702 wrecked the formatting. Now it is preserved.
704 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
705 that they are available at delivery time.
707 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
709 TF/08 TLS error reporting now respects the incoming_interface and
710 incoming_port log selectors.
712 TF/09 Produce a more useful error message if an SMTP transport's hosts
713 setting expands to an empty string.
715 NM/06 Bugzilla 744: EXPN did not work under TLS.
716 Patch provided by Phil Pennock.
718 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
719 Patch provided by Richard Godbee.
721 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
722 acl_smtp_notquit, added index entry.
724 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
725 Patch provided by Eugene Bujak.
727 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
728 accept(). Patch provided by Maxim Dounin.
730 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
731 Patch provided by Phil Pennock.
733 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
735 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
736 Patch provided by Brad "anomie" Jorsch.
738 NM/14 Bugzilla 622: Added timeout setting to transport filter.
739 Patch provided by Dean Brooks.
741 TK/05 Add native DKIM support (does not depend on external libraries).
743 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
744 Patch provided by Graeme Fowler.
746 NM/16 Bugzilla 851: Documentation example syntax fix.
748 NM/17 Changed NOTICE file to remove references to embedded PCRE.
750 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
753 NM/19 Bugzilla 745: TLS version reporting.
754 Patch provided by Phil Pennock.
756 NM/20 Bugzilla 167: bool: condition support.
757 Patch provided by Phil Pennock.
759 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
760 clients. Patch provided by Phil Pennock.
762 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
763 Patch provided by Brad "anomie" Jorsch.
765 NM/23 Bugzilla 687: Fix misparses in eximstats.
766 Patch provided by Heiko Schlittermann.
768 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
769 Patch provided by Heiko Schlittermann.
771 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
772 plus update to original patch.
774 NM/26 Bugzilla 799: Documentation correction for ratelimit.
776 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
777 Patch provided by David Brownlee.
779 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
781 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
783 NM/30 Bugzilla 888: TLS documentation bugfixes.
785 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
787 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
788 Unlike the original bugzilla I have changed all shell scripts in src tree.
790 NM/33 Bugzilla 898: Transport filter timeout fix.
791 Patch by Todd Rinaldo.
793 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
794 Patch by Serge Demonchaux.
796 NM/35 Bugzilla 39: Base64 decode bug fixes.
797 Patch by Jakob Hirsch.
799 NM/36 Bugzilla 909: Correct connect() call in dcc code.
801 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
803 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
805 NM/39 Bugzilla 911: Fixed MakeLinks build script.
811 TK/01 Add preliminary DKIM support. Currently requires a forked version of
812 ALT-N's libdkim that I have put here:
813 http://duncanthrax.net/exim-experimental/
815 Note to Michael Haardt: I had to rename some vars in sieve.c. They
816 were called 'true' and it seems that C99 defines that as a reserved
817 keyword to be used with 'bool' variable types. That means you could
818 not include C99-style headers which use bools without triggering
819 build errors in sieve.c.
821 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
822 as mailq or other aliases. Changed the --help handling significantly
823 to do whats expected. exim_usage() emits usage/help information.
825 SC/01 Added the -bylocaldomain option to eximstats.
827 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
829 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
831 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
837 PH/01 Another patch from the Sieve maintainer.
839 PH/02 When an IPv6 address is converted to a string for single-key lookup
840 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
841 dots are used instead of colons so that keys in lsearch files need not
842 contain colons. This was done some time before quoting was made available
843 in lsearch files. However, iplsearch files do require colons in IPv6 keys
844 (notated using the quote facility) so as to distinguish them from IPv4
845 keys. This meant that lookups for IP addresses in host lists did not work
846 for iplsearch lookups.
848 This has been fixed by arranging for IPv6 addresses to be expressed with
849 colons if the lookup type is iplsearch. This is not incompatible, because
850 previously such lookups could never work.
852 The situation is now rather anomolous, since one *can* have colons in
853 ordinary lsearch keys. However, making the change in all cases is
854 incompatible and would probably break a number of configurations.
856 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
859 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
860 conversion specification without a maximum field width, thereby enabling
861 a rogue spamd server to cause a buffer overflow. While nobody in their
862 right mind would setup Exim to query an untrusted spamd server, an
863 attacker that gains access to a server running spamd could potentially
864 exploit this vulnerability to run arbitrary code as the Exim user.
866 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
867 $primary_hostname instead of what libspf2 thinks the hosts name is.
869 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
870 a directory entry by the name of the lookup key. Previously, if a
871 symlink pointed to a non-existing file or a file in a directory that
872 Exim lacked permissions to read, a lookup for a key matching that
873 symlink would fail. Now it is enough that a matching directory entry
874 exists, symlink or not. (Bugzilla 503.)
876 PH/03 The body_linecount and body_zerocount variables are now exported in the
879 PH/04 Added the $dnslist_matched variable.
881 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
882 This means they are set thereafter only if the connection becomes
885 PH/06 Added the client_condition to authenticators so that some can be skipped
886 by clients under certain conditions.
888 PH/07 The error message for a badly-placed control=no_multiline_responses left
889 "_responses" off the end of the name.
891 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
893 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
894 (without spaces) instead of just copying the configuration text.
896 PH/10 Added the /noupdate option to the ratelimit ACL condition.
898 PH/11 Added $max_received_linelength.
900 PH/12 Added +ignore_defer and +include_defer to host lists.
902 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
903 way in which PCRE > 7.0 is built.
905 PH/14 Implemented queue_only_load_latch.
907 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
908 MAIL command. The effect was to mangle the value on 64-bit systems.
910 PH/16 Another patch from the Sieve maintainer.
912 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
914 PH/18 If a system quota error occurred while trying to create the file for
915 a maildir delivery, the message "Mailbox is full" was not appended to the
916 bounce if the delivery eventually timed out. Change 4.67/27 below applied
917 only to a quota excession during the actual writing of the file.
919 PH/19 It seems that peer DN values may contain newlines (and other non-printing
920 characters?) which causes problems in log lines. The DN values are now
921 passed through string_printing() before being added to log lines.
923 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
924 and InterBase are left for another time.)
926 PH/21 Added message_body_newlines option.
928 PH/22 Guard against possible overflow in moan_check_errorcopy().
930 PH/23 POSIX allows open() to be a macro; guard against that.
932 PH/24 If the recipient of an error message contained an @ in the local part
933 (suitably quoted, of course), incorrect values were put in $domain and
934 $local_part during the evaluation of errors_copy.
940 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
941 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
944 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
945 issue a MAIL command.
947 PH/02 In an ACL statement such as
949 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
951 if a client was not listed at all, or was listed with a value other than
952 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
953 the condition was not true (as it should be), so access was not denied.
954 The bug was that the ! inversion was incorrectly passed on to the second
955 item. This has been fixed.
957 PH/03 Added additional dnslists conditions == and =& which are different from
958 = and & when the dns lookup returns more than one IP address.
960 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
961 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
963 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
964 FSYNC, which compiles an option called disable_fsync that allows for
965 bypassing fsync(). The documentation is heavily laced with warnings.
967 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
969 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
970 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
971 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
972 including adding "make clean"; (3) Added -fPIC when compiling the test
973 dynamically loaded module, to get rid of a warning.
975 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
976 message fails, move_frozen_messages = true and ignore_bounce_errors_after
977 = 0s. The bug is otherwise harmless.
979 PH/07 There was a bug in the dovecot authenticator such that the value of
980 $auth1 could be overwritten, and so not correctly preserved, after a
981 successful authentication. This usually meant that the value preserved by
982 the server_setid option was incorrect.
984 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
986 PH/09 Installed PCRE release 7.0.
988 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
989 run for batched SMTP input. It is now run at the start of every message
990 in the batch. While fixing this I discovered that the process information
991 (output by running exiwhat) was not always getting set for -bs and -bS
992 input. This is fixed, and it now also says "batched" for BSMTP.
994 PH/11 Added control=no_pipelining.
996 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
997 patch, slightly modified), and move the expansion of helo_data till after
998 the connection is made in the smtp transport (so it can use these
1001 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1003 PH/14 Added log_selector = +pid.
1005 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1007 PH/16 Add ${if forany and ${if forall.
1009 PH/17 Added dsn_from option to vary the From: line in DSNs.
1011 PH/18 Flush SMTP output before performing a callout, unless control =
1012 no_callout_flush is set.
1014 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1015 was true (the default) a successful delivery failed to delete the retry
1016 item, thus causing premature timeout of the address. The bug is now
1019 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1021 PH/21 Long custom messages for fakedefer and fakereject are now split up
1022 into multiline reponses in the same way that messages for "deny" and
1023 other ACL rejections are.
1025 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1026 with slight modification.
1028 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1029 draft, changing the syntax and factoring some duplicate code".
1031 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1032 for deliveries of the second and subsequent messages over the same SMTP
1035 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1036 ${reduce, with only minor "tidies".
1038 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1040 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1041 expansion side effects.
1043 PH/27 When a message times out after an over-quota error from an Exim-imposed
1044 quota, the bounce message says "mailbox is full". This message was not
1045 being given when it was a system quota that was exceeded. It now should
1048 MH/03 Made $recipients available in local_scan(). local_scan() already has
1049 better access to the recipient list through recipients_list[], but
1050 $recipients can be useful in postmaster-provided expansion strings.
1052 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1053 in the case of a MAIL command with additional options following the
1054 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1055 were accidentally chopped off.
1057 PH/29 SMTP synchronization checks are implemented when a command is read -
1058 there is a check that no more input is waiting when there shouldn't be
1059 any. However, for some commands, a delay in an ACL can mean that it is
1060 some time before the response is written. In this time, more input might
1061 arrive, invalidly. So now there are extra checks after an ACL has run for
1062 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1063 pipelining has not been advertised.
1065 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1067 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1068 returned in the SMTP response when smtp_return_error_details was false.
1069 This has been fixed.
1071 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1072 instead of the C I/O that was originally supplied, because problems were
1073 reported on Solaris.
1075 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1076 Exim which did not show up earlier: it was assuming that a call to
1077 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1078 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1079 was a macro that became an assignment, so it seemed to work. This has
1080 changed to a proper function call with a void return, hence the compile
1081 error. Exim's code has been fixed.
1083 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1086 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1088 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1090 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1091 because it turns out to be too big or there is a timeout) there is no
1092 "Completed" line in the log. When some messages of this type were
1093 selected by exigrep, they were listed as "not completed". Others were
1094 picked up by some special patterns. I have improved the selection
1095 criteria to be more general.
1097 PH/38 The host_find_failed option in the manualroute router can now be set
1098 to "ignore", to completely ignore a host whose IP address cannot be
1099 found. If all hosts are ignored, the behaviour is controlled by the new
1100 host_all_ignored option.
1102 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1103 homing or because of multiple MX records with /mx) generated more than
1104 one IP address, and the following item turned out to be the local host,
1105 all the secondary addresses of the first item were incorrectly removed
1106 from the list, along with the local host and any following hosts (which
1107 is what is supposed to happen).
1109 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1110 whoever called Exim into the -H file. In the case of the daemon it was
1111 behaving confusingly. When first started, it used values for whoever
1112 started the daemon, but after a SIGHUP it used the Exim user (because it
1113 calls itself on a restart). I have changed the code so that it now always
1116 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1117 message are rejected with the same error (e.g. no authentication or bad
1118 sender address), and a DATA command is nevertheless sent (as can happen
1119 with PIPELINING or a stupid MUA), the error message that was given to the
1120 RCPT commands is included in the rejection of the DATA command. This is
1121 intended to be helpful for MUAs that show only the final error to their
1124 PH/42 Another patch from the Sieve maintainer.
1126 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1127 Eximstats - Fixed some broken HTML links and added missing column headers
1129 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1130 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1132 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1134 PH/43 Yet another patch from the Sieve maintainer.
1136 PH/44 I found a way to check for a TCP/IP connection going away before sending
1137 the response to the final '.' that terminates a message, but only in the
1138 case where the client has not sent further data following the '.'
1139 (unfortunately, this is allowed). However, in many cases there won't be
1140 any further data because there won't be any more messages to send. A call
1141 to select() can be used: if it shows that the input is "ready", there is
1142 either input waiting, or the socket has been closed. An attempt to read
1143 the next input character can distinguish the two cases. Previously, Exim
1144 would have sent an OK response which the client would never have see.
1145 This could lead to message repetition. This fix should cure that, at
1146 least in a lot of common cases.
1148 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1149 advertised in response to EHLO.
1155 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
1156 fixed by 4.65/MH/01 (is this a record?) are fixed:
1158 (i) An empty string was always treated as zero by the numeric comparison
1159 operators. This behaviour has been restored.
1161 (ii) It is documented that the numeric comparison operators always treat
1162 their arguments as decimal numbers. This was broken in that numbers
1163 starting with 0 were being interpreted as octal.
1165 While fixing these problems I realized that there was another issue that
1166 hadn't been noticed. Values of message_size_limit (both the global option
1167 and the transport option) were treated as octal if they started with 0.
1168 The documentation was vague. These values are now always treated as
1169 decimal, and I will make that clear in the documentation.
1175 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
1176 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
1179 MH/01 Don't check that the operands of numeric comparison operators are
1180 integers when their expansion is in "skipping" mode (fixes bug
1181 introduced by 4.64-PH/07).
1183 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
1184 child addresses, Exim now panics and dies. Previously, because the count
1185 is held in a short int, deliveries were likely to be lost. As such a
1186 large number of recipients for a single message is ridiculous
1187 (performance will be very, very poor), I have chosen to impose a limit
1188 rather than extend the field.
1194 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
1195 leftover -K file (the existence of which was triggered by #402).
1196 While we were at it, introduced process PID as part of the -K
1197 filename. This should rule out race conditions when creating
1200 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
1201 processing considerably. Previous code took too long for large mails,
1202 triggering a timeout which in turn triggers #401.
1204 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
1205 in the DK code in transports.c. sendfile() is not really portable,
1206 hence the _LINUX specificness.
1208 TF/01 In the add_headers option to the mail command in an Exim filter,
1209 there was a bug that Exim would claim a syntax error in any
1210 header after the first one which had an odd number of characters
1213 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
1214 callout verification, Exim cached a "reject" for the entire domain. This
1215 is correct for most verifications, but it is not correct for a recipient
1216 verification with use_sender or use_postmaster set, because in that case
1217 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
1218 case of MAIL FROM:<> rejection from other early rejections (e.g.
1219 rejection of HELO). When verifying a recipient using a non-null MAIL
1220 address, the cache is ignored if it shows MAIL FROM:<> rejection.
1221 Whatever the result of the callout, the value of the domain cache is
1222 left unchanged (for any other kind of callout, getting as far as trying
1223 RCPT means that the domain itself is ok).
1225 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
1228 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
1229 manifest itself as EPIPE rather than ECONNECT. When tidying away a
1230 session, the daemon ignores ECONNECT errors and logs others; it now
1231 ignores EPIPE as well.
1233 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
1234 (quoted-printable decoding).
1236 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
1237 later the small subsequent patch to fix an introduced bug.
1239 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
1241 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
1243 PH/08 An error is now given if message_size_limit is specified negative.
1245 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
1246 to be given (somewhat) arbitrary names.
1248 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
1251 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
1252 miscellaneous code fixes
1254 PH/10 Added the log_reject_target ACL modifier to specify where to log
1257 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
1258 hostname. This is wrong, because it relates to the incoming message (and
1259 probably the interface on which it is arriving) and not to the outgoing
1260 callout (which could be using a different interface). This has been
1261 changed to use the value of the helo_data option from the smtp transport
1262 instead - this is what is used when a message is actually being sent. If
1263 there is no remote transport (possible with a router that sets up host
1264 addresses), $smtp_active_hostname is used.
1266 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
1267 tweaks were necessary in order to get it to work (see also 21 below):
1268 (a) The code assumed that strncpy() returns a negative number on buffer
1269 overflow, which isn't the case. Replaced with Exim's string_format()
1271 (b) There were several signed/unsigned issues. I just did the minimum
1272 hacking in of casts. There is scope for a larger refactoring.
1273 (c) The code used strcasecmp() which is not a standard C function.
1274 Replaced with Exim's strcmpic() function.
1275 (d) The code set only $1; it now sets $auth1 as well.
1276 (e) A simple test gave the error "authentication client didn't specify
1277 service in request". It would seem that Dovecot has changed its
1278 interface. Fortunately there's a specification; I followed it and
1279 changed what the client sends and it appears to be working now.
1281 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
1284 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
1285 address A is aliased to B and C, where B exists and C does not. Without
1286 -v the output is "A verified" because verification stops after a
1287 successful redirection if more than one address is generated. However,
1288 with -v the child addresses are also verified. Exim was outputting "A
1289 failed to verify" and then showing the successful verification for C,
1290 with its parentage. It now outputs "B failed to verify", showing B's
1291 parentage before showing the successful verification of C.
1293 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
1294 look up a TXT record in a specific list after matching in a combined
1297 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
1298 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
1299 they consult the DNS. I had assumed they would set it the way they
1300 wanted; and indeed my experiments on Linux seem to show that in some
1301 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
1302 To be on the safe side, however, I have now made the interface to
1303 host_find_byname() similar to host_find_bydns(), with an argument
1304 containing the DNS resolver options. The host_find_byname() function now
1305 sets these options at its start, just as host_find_bydns() does. The smtp
1306 transport options dns_qualify_single and dns_search_parents are passed to
1307 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
1308 of host_find_byname() use the default settings of RES_DEFNAMES
1309 (qualify_single) but not RES_DNSRCH (search_parents).
1311 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
1312 spool_read_header() do less string testing, by means of a preliminary
1313 switch on the second character of optional "-foo" lines. (This is
1314 overdue, caused by the large number of possibilities that now exist.
1315 Originally there were few.) While I was there, I also converted the
1316 str(n)cmp tests so they don't re-test the leading "-" and the first
1317 character, in the hope this might squeeze out yet more improvement.
1319 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
1320 flag allowing group syntax was set by the header_syntax check but not
1321 turned off, possible causing trouble later; (2) The flag was not being
1322 set at all for the header_verify test, causing "group"-style headers to
1323 be rejected. I have now set it in this case, and also caused header_
1324 verify to ignore an empty address taken from a group. While doing this, I
1325 came across some other cases where the code for allowing group syntax
1326 while scanning a header line wasn't quite right (mostly, not resetting
1327 the flag correctly in the right place). These bugs could have caused
1328 trouble for malformed header lines. I hope it is now all correct.
1330 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
1331 with the "reply" argument non-NULL. The code, however (which originally
1332 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
1333 but it didn't always do it. This confused somebody who was copying the
1334 code for some other use. I have removed all the tests.
1336 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
1337 feature that was used to support insecure browsers during the U.S. crypto
1338 embargo. It requires special client support, and Exim is probably the
1339 only MTA that supported it -- and would never use it because real RSA is
1340 always available. This code has been removed, because it had the bad
1341 effect of slowing Exim down by computing (never used) parameters for the
1342 RSA_EXPORT functionality.
1344 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
1345 authenticator to fail if there's a tab character in the incoming data
1346 (there should never be unless someone is messing about, as it's supposed
1347 to be base64-encoded). Also added, on Timo's advice, the "secured" option
1348 if the connection is using TLS or if the remote IP is the same as the
1349 local IP, and the "valid-client-cert option" if a client certificate has
1352 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
1353 authenticators. This can be used for authorization after authentication
1354 succeeds. (In the case of plaintext, it servers for both authentication
1357 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
1358 if any retry times were supplied.
1360 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
1361 connection, where there is no client IP address to check. In this
1362 situation, the verify now always succeeds.
1364 PH/25 Applied John Jetmore's -Mset patch.
1366 PH/26 Added -bem to be like -Mset, but loading a message from a file.
1368 PH/27 In a string expansion for a processed (not raw) header when multiple
1369 headers of the same name were present, leading whitespace was being
1370 removed from all of them, but trailing whitespace was being removed only
1371 from the last one. Now trailing whitespace is removed from each header
1372 before concatenation. Completely empty headers in a concatenation (as
1373 before) are ignored.
1375 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
1376 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
1378 PH/29 [Removed. This was a change that I later backed out, and forgot to
1379 correct the ChangeLog entry (that I had efficiently created) before
1380 committing the later change.]
1382 PH/30 Exim was sometimes attempting to deliver messages that had suffered
1383 address errors (4xx response to RCPT) over the same connection as other
1384 messages routed to the same hosts. Such deliveries are always "forced",
1385 so retry times are not inspected. This resulted in far too many retries
1386 for the affected addresses. The effect occurred only when there were more
1387 hosts than the hosts_max_try setting in the smtp transport when it had
1388 the 4xx errors. Those hosts that it had tried were not added to the list
1389 of hosts for which the message was waiting, so if all were tried, there
1390 was no problem. Two fixes have been applied:
1392 (i) If there are any address or message errors in an SMTP delivery, none
1393 of the hosts (tried or untried) are now added to the list of hosts
1394 for which the message is waiting, so the message should not be a
1395 candidate for sending over the same connection that was used for a
1396 successful delivery of some other message. This seems entirely
1397 reasonable: after all the message is NOT "waiting for some host".
1398 This is so "obvious" that I'm not sure why it wasn't done
1399 previously. Hope I haven't missed anything, but it can't do any
1400 harm, as the worst effect is to miss an optimization.
1402 (ii) If, despite (i), such a delivery is accidentally attempted, the
1403 routing retry time is respected, so at least it doesn't keep
1404 hammering the server.
1406 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
1407 in ${readsocket because some servers need this prod.
1409 PH/32 Added some extra debug output when updating a wait-xxx database.
1411 PH/33 The hint "could be header name not terminated by colon", which has been
1412 given for certain expansion errors for a long time, was not being given
1413 for the ${if def:h_colon_omitted{... case.
1415 PH/34 The spec says: "With one important exception, whenever a domain list is
1416 being scanned, $domain contains the subject domain." There was at least
1417 one case where this was not true.
1419 PH/35 The error "getsockname() failed: connection reset by peer" was being
1420 written to the panic log as well as the main log, but it isn't really
1421 panic-worthy as it just means the connection died rather early on. I have
1422 removed the panic log writing for the ECONNRESET error when getsockname()
1425 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
1426 runs only) independently of the message's sender address. This meant
1427 that, if the 4xx error was in fact related to the sender, a different
1428 message to the same recipient with a different sender could confuse
1429 things. In particualar, this can happen when sending to a greylisting
1430 server, but other circumstances could also provoke similar problems.
1431 I have changed the default so that the retry time for these errors is now
1432 based a combination of the sender and recipient addresses. This change
1433 can be overridden by setting address_retry_include_sender=false in the
1436 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
1437 remote server are returned as part of bounce messages. This was not
1438 happening for LMTP over a pipe (the lmtp transport), but now it is the
1439 same for both kinds of LMTP.
1441 PH/38 Despite being documented as not happening, Exim was rewriting addresses
1442 in header lines that were in fact CNAMEs. This is no longer the case.
1444 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
1445 and queue runs started by the daemon processed all messages. This has
1446 been fixed so that -R and -S can now usefully be given with -q<time>.
1448 PH/40 Import PCRE release 6.7 (fixes some bugs).
1450 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
1452 PH/42 Give an error if -q is specified more than once.
1454 PH/43 Renamed the variables $interface_address and $interface_port as
1455 $received_ip_address and $received_port, to make it clear that these
1456 values apply to message reception, and not to the outgoing interface when
1457 a message is delivered. (The old names remain recognized, of course.)
1459 PH/44 There was no timeout on the connect() call when using a Unix domain
1460 socket in the ${readsocket expansion. There now is.
1462 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
1463 be meaningful with "accept".
1465 SC/01 Eximstats V1.43
1466 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
1468 SC/02 Eximstats V1.44
1469 Use a glob alias rather than an array ref in the generated
1470 parser. This improves both readability and performance.
1472 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
1473 Collect SpamAssassin and rejection statistics.
1474 Don't display local sender or destination tables unless
1475 there is data to show.
1476 Added average volumes into the top table text output.
1478 SC/04 Eximstats V1.46
1479 Collect data on the number of addresses (recipients)
1480 as well as the number of messages.
1482 SC/05 Eximstats V1.47
1483 Added 'Message too big' to the list of mail rejection
1484 reasons (thanks to Marco Gaiarin).
1486 SC/06 Eximstats V1.48
1487 Mainlog lines which have GMT offsets and are too short to
1488 have a flag are now skipped.
1490 SC/07 Eximstats V1.49 (Alain Williams)
1491 Added the -emptyok flag.
1493 SC/08 Eximstats V1.50
1494 Fixes for obtaining the IP address from reject messages.
1496 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
1497 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
1498 whitesspace changes from 4.64-PH/27
1500 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
1503 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
1504 are found, allow negative numbers in numeric criteria)
1506 JJ/06 exipick.20061117.2, added new $message_body_missing variable
1508 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
1509 to match changes made in 4.64-PH/43
1511 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
1513 PH/47 Put in an explicit test for a DNS lookup of an address record where the
1514 "domain" is actually an IP address, and force a failure. This locks out
1515 those revolvers/nameservers that support "A-for-A" lookups, in
1516 contravention of the specifications.
1518 PH/48 When a host name was looked up from an IP address, and the subsequent
1519 forward lookup of the name timed out, the host name was left in
1520 $sender_host_name, contrary to the specification.
1522 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
1523 restricted to single-key lookups, Exim was not diagnosing an error if
1524 * or *@ was used with a query-style lookup.
1526 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
1528 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
1529 long ago, but noone interested enough thought of it. Let's just say that
1530 the "1.1" means that there are some new functions that weren't there at
1531 some point in the past.
1533 PH/51 Error processing for expansion failure of helo_data from an smtp
1534 transport during callout processing was broken.
1536 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
1537 tested/used via the -bh/-bhc/-bs options.
1539 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
1540 bug, fixed in subsequent PCRE releases).
1542 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
1543 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
1545 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
1551 SC/01 Use a glob alias rather than an array ref in eximstats generated
1552 parser. This improves both readability and performance.
1554 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
1555 Don't display local sender or destination tables in eximstats unless
1556 there is data to show.
1557 Added average volumes into the eximstats top table text output.
1559 SC/03 Collect data on the number of addresses (recipients) as well
1560 as the number of messages in eximstats.
1562 TF/01 Correct an error in the documentation for the redirect router. Exim
1563 does (usually) call initgroups() when daemonizing.
1565 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
1566 with consistent privilege compared to when running as a daemon.
1568 TF/03 Note in the spec that $authenticated_id is not set for local
1569 submissions from trusted users.
1571 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
1572 Thanks to Dean Brooks <dean@iglou.com> for the patch.
1574 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
1575 by adding some example configuration directives to the default
1576 configuration file. A little bit of work is required to uncomment the
1577 directives and define how usernames and passwords are checked, but
1578 there is now a framework to start from.
1580 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
1581 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
1582 without this. I don't know how relevant this is to other LDAP libraries.
1584 PH/02 Add the verb name to the "unknown ACL verb" error.
1586 PH/03 Magnus Holmgren's patch for filter_prepend_home.
1588 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
1590 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
1591 directory not expanded when it should be if an expanded home directory
1592 was set for the address (which is overridden by the transport).
1594 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
1597 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
1598 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
1599 because it is too late at that time, and has no effect.
1601 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
1602 security issue with \' (bugzilla #107). I could not use the
1603 PQescapeStringConn() function, because it needs a PGconn value as one of
1606 PH/08 When testing addresses using -bt, indicate those final addresses that
1607 are duplicates that would not cause an additional delivery. At least one
1608 person was confused, thinking that -bt output corresponded to deliveries.
1609 (Suppressing duplicates isn't a good idea as you lose the information
1610 about possibly different redirections that led to the duplicates.)
1612 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
1613 systems where poll() doesn't work, in particular OS X.
1615 PH/10 Added more information to debugging output for retry time not reached.
1617 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
1618 operations in malware.c.
1620 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
1623 PH/13 If write_rejectlog was set false when logging was sent to syslog with
1624 syslog_duplication set false, log lines that would normally be written
1625 both the the main log and to the reject log were not written to syslog at
1628 PH/14 In the default configuration, change the use of "message" in ACL warn
1629 statements to "add_header".
1631 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
1632 not followed by a command (e.g. "seen endif").
1634 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
1635 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
1638 PH/17 Added extra conditions to the default value of delay_warning_condition
1642 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
1643 { match{$h_precedence:}{(?i)bulk|list|junk} } \
1644 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
1647 The Auto-Submitted: and various List- headers are standardised, whereas I
1648 don't think Precedence: ever was.
1650 PH/18 Refactored debugging code in route_finduser() to show more information,
1651 in particular, the error code if getpwnam() issues one.
1653 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
1654 This is apparently needed in addition to the PH/07 change above to avoid
1655 any possible encoding problems.
1657 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
1658 but not after initializing Perl.
1660 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
1661 output them only if debugging. By default they are written stderr,
1662 apparently, which is not desirable.
1664 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
1667 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
1670 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
1672 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
1673 authenticated or an ident call has been made. Suppress the default
1674 values for $authenticated_id and $authenticated_sender (but permit -oMai
1675 and -oMas) when testing with -bh.
1677 PH/24 Re-jigged the order of the tests in the default configuration so that the
1678 tests for valid domains and recipients precede the DNS black list and CSA
1679 tests, on the grounds that those ones are more expensive.
1681 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
1682 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
1683 This bug exists in every version of Exim that I still have, right back to
1686 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
1687 However, an attempt to turn on case-sensitivity in a regex key by
1688 including (?-i) didn't work because the subject string was already
1689 lowercased, and the effects were non-intuitive. It turns out that a
1690 one-line patch can be used to allow (?-i) to work as expected.
1696 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
1697 other effects) broke the use of negated acl sub-conditions.
1699 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
1702 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
1703 "Deny" causes Exim to reject the incoming connection with a 554 error.
1704 Unfortunately, if there is a major crisis, such as a disk failure,
1705 tcp-wrappers gives "deny", whereas what one would like would be some
1706 kind of temporary error. A kludge has been added to help with this.
1707 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
1708 554 error is used if errno is still zero or contains ENOENT (which occurs
1709 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
1712 PH/03 Add -lutil to the default FreeBSD LIBS setting.
1714 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
1715 errors. Otherwise a message that provokes a temporary error (when other
1716 messages do not) can cause a whole host to time out.
1718 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
1719 addresses were routed directly to files or pipes from a redirect router.
1720 File deliveries just didn't batch; pipe deliveries might have suffered
1723 PH/06 A failure to get a lock for a hints database would erroneously always say
1724 "Failed to get write lock", even when it was really a read lock.
1726 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
1727 of 0600. This has been changed to use the value of the lockfile_mode
1728 option (which defaults to 0600).
1730 PH/08 Applied small patch from the Sieve maintainer.
1732 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
1733 folder from quota calculations, a direct delivery into this folder messed
1734 up the contents of the maildirsize file. This was because the regex was
1735 used only to exclude .Trash (or whatever) when the size of the mailbox
1736 was calculated. There was no check that a delivery was happening into an
1737 excluded directory. This bug has been fixed by ignoring all quota
1738 processing for deliveries into excluded directories.
1740 PH/10 Added the maildirfolder_create_regex option to appendfile.
1746 PH/01 The code for finding all the local interface addresses on a FreeBSD
1747 system running IPv6 was broken. This may well have applied to all BSD
1748 systems, as well as to others that have similar system calls. The broken
1749 code found IPv4 interfaces correctly, but gave incorrect values for the
1750 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
1751 that it would not match correctly against @[] and not recognize the IPv6
1754 PH/02 The ipliteral router was not recognizing addresses of the form user@
1755 [ipv6:....] because it didn't know about the "ipv6:" prefix.
1757 PH/03 Added disable_ipv6.
1759 PH/04 Changed $reply_address to use the raw form of the headers instead of the
1760 decoded form, because it is most often used to construct To: headers
1761 lines in autoreplies, and the decoded form may well be syntactically
1762 invalid. However, $reply_address has leading white space removed, and all
1763 newlines turned into spaces so that the autoreply transport does not
1766 PH/05 If group was specified without a user on a router, and no group or user
1767 was specified on a transport, the group from the router was ignored.
1769 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
1770 for visible compile-time settings that can be used to change these
1771 numbers, for those that want even more. Backwards compatibility with old
1772 spool files has been maintained. However, going back to a previous Exim
1773 release will lost any variables that are in spool files.
1775 PH/07 Two small changes when running in the test harness: increase delay when
1776 passing a TCP/IP connection to a new process, in case the original
1777 process has to generate a bounce, and remove special handling of
1778 127.0.0.2 (sic), which is no longer necessary.
1780 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
1781 be the same on different OS.
1783 PH/09 Moved a debug statement in filter processing to avoid a race problem when
1786 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
1787 whether --show-vars was specified or not
1789 JJ/02 exipick: Added support for new ACL variable spool format introduced
1792 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
1793 syntactically invalid From: or Reply-to: line, and a filter used this to
1794 generate an autoreply, and therefore failed to obtain an address for the
1795 autoreply, Exim could try to deliver to a non-existent relative file
1796 name, causing unrelated and misleading errors. What now happens is that
1797 it logs this as a hard delivery error, but does not attempt to create a
1800 PH/11 The exinext utility has a -C option for testing purposes, but although
1801 the given file was scanned by exinext itself; it wasn't being passed on
1802 when Exim was called.
1804 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
1805 an end-of-file indication when reading a command response.
1807 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
1808 compiled. In many other places in Exim, IPv6 addresses are always
1809 recognized, so I have changed this. It also means that IPv4 domain
1810 literals of the form [IPV4:n.n.n.n] are now always recognized.
1812 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
1813 used if the router is not running as root, for example, when verifying at
1814 ACL time, or when using -bh. The debugging output from this situation was
1815 non-existent - all you got was a failure to exec. I have made two
1818 (a) Failures to set uid/gid, the current directory, or a process leader
1819 in a subprocess such as that created by queryprogram now generate
1820 suitable debugging ouput when -d is set.
1822 (b) The queryprogram router detects when it is not running as root,
1823 outputs suitable debugging information if -d is set, and then runs
1824 the subprocess without attempting to change uid/gid.
1826 PH/15 Minor change to Makefile for building test_host (undocumented testing
1829 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1830 additional section of a DNS packet that returns MX or SRV records.
1831 Instead, it always explicitly searches for A/AAAA records. This avoids
1832 major problems that occur when a DNS server includes only records of one
1833 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1834 fixed another bug: if SRV records were looked up and the corresponding
1835 address records were *not* found in the additional section, the port
1836 values from the SRV records were lost.
1838 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1839 using the correct key (the original address) when searching the retry
1840 rules in order to find which one to use for generating the retry hint.
1842 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1843 adding the default one. Similarly, if it contains a Reply-To: header, the
1844 errors_reply_to option, if set, is not used.
1846 PH/19 When calculating a retry time, Exim used to measure the "time since
1847 failure" by looking at the "first failed" field in the retry record. Now
1848 it does not use this if it is later than than the arrival time of the
1849 message. Instead it uses the arrival time. This makes for better
1850 behaviour in cases where some deliveries succeed, thus re-setting the
1851 "first failed" field. An example is a quota failure for a huge message
1852 when small messages continue to be delivered. Without this change, the
1853 "time since failure" will always be short, possible causing more frequent
1854 delivery attempts for the huge message than are intended.
1855 [Note: This change was subsequently modified - see PH/04 for 4.62.]
1857 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1858 $1, $2, $3) because the numerical variables can be reset during some
1859 expansion items (e.g. "match"), thereby losing the authentication data.
1861 PH/21 Make -bV show the size of off_t variables so that the test suite can
1862 decide whether to run tests for quotas > 2G.
1864 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1865 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1866 filecount value is greater than 2G or if a quota value is greater than 2G
1867 on a system where the size of off_t is not greater than 4, a panic error
1870 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1871 never match. The debug and -bh output now contains an explicit error
1872 message indicating a malformed IPv4 address or mask.
1874 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1875 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1876 PH/23 above applies.
1878 PH/25 Do not write to syslog when running in the test harness. The only
1879 occasion when this arises is a failure to open the main or panic logs
1880 (for which there is an explicit test).
1882 PH/26 Added the /no_tell option to "control=freeze".
1884 PH/27 If a host name lookup failed very early in a connection, for example, if
1885 the IP address matched host_lookup and the reverse lookup yielded a name
1886 that did not have a forward lookup, an error message of the form "no IP
1887 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1888 could be logged. Now it outputs the IP address instead of "NULL".
1890 PH/28 An enabling patch from MH: add new function child_open_exim2() which
1891 allows the sender and the authenticated sender to be set when
1892 submitting a message from within Exim. Since child_open_exim() is
1893 documented for local_scan(), the new function should be too.
1895 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1896 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1897 results in an empty string is now treated as unset.
1899 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1901 PH/31 Added sender_verify_fail logging option.
1903 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1904 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1905 tidied the source and removed it altogether.
1907 PH/33 When a queue run was abandoned because the load average was too high, a
1908 log line was always written; now it is written only if the queue_run log
1909 selector is set. In addition, the log line for abandonment now contains
1910 information about the queue run such as the pid. This is always present
1911 in "start" and "stop" lines but was omitted from the "abandon" line.
1913 PH/34 Omit spaces between a header name and the colon in the error message that
1914 is given when verify = headers_syntax fails (if there are lots of them,
1915 the message gets confusing).
1917 PH/35 Change the default for dns_check_names_pattern to allow slashes within
1918 names, as there are now some PTR records that contain slashes. This check
1919 is only to protect against broken name servers that fall over on strange
1920 characters, so the fact that it applies to all lookups doesn't matter.
1922 PH/36 Now that the new test suite is complete, we can remove some of the
1923 special code in Exim that was needed for the old test suite. For example,
1924 sorting DNS records because real resolvers return them in an arbitrary
1925 order. The new test suite's fake resolver always returns records in the
1928 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1929 bounces) except when queue_only is set, to avoid logging races between
1930 the different processes.
1932 PH/38 Panic-die if .include specifies a non-absolute path.
1934 PH/39 A tweak to the "H" retry rule from its user.
1936 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1937 a label. They prevented compilation on older perls.
1939 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1940 a warning to be raised on newish perls.
1942 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1943 on queue. Changes to match documented behaviour of showing count of
1944 messages matching specified criteria.
1946 PH/40 Changed the default ident timeout from 30s to 5s.
1948 PH/41 Added support for the use of login_cap features, on those BSD systems
1949 that have them, for controlling the resources used by pipe deliveries.
1951 PH/42 The content-scanning code uses fopen() to create files in which to put
1952 message data. Previously it was not paying any attention to the mode of
1953 the files. Exim runs with umask(0) because the rest of the code creates
1954 files with open(), and sets the required mode explicitly. Thus, these
1955 files were ending up world-writeable. This was not a big issue, because,
1956 being within the spool directory, they were not world-accessible. I have
1957 created a function called modefopen, which takes an additional mode
1958 argument. It sets umask(777), creates the file, chmods it to the required
1959 mode, then resets the umask. All the relevant calls to fopen() in the
1960 content scanning code have been changed to use this function.
1962 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1963 to 24 hours. This avoids potential overflow problems when processing G
1964 and H retry rules. I suspect nobody ever tinkers with this value.
1966 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1968 PH/45 When the plaintext authenticator is running as a client, the server's
1969 challenges are checked to ensure they are valid base64 strings. By
1970 default, the authentication attempt is cancelled if an invalid string is
1971 received. Setting client_ignore_invalid_base64 true ignores these errors.
1972 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1973 they are received. Thus, the responses can be made to depend on the
1974 challenges. If an invalid string is ignored, an empty string is placed in
1977 PH/46 Messages that are created by the autoreply transport now contains a
1978 References: header, in accordance with RFCs 2822 and 3834.
1980 PH/47 Added authenticated_sender_force to the smtp transport.
1982 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1984 PH/49 Installed latest patch from the Sieve maintainer.
1986 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1987 was also set, the appendfile transport was unnecessarily scanning a
1988 directory of message files (e.g. for maildir delivery) to find the count
1989 of files (along with the size), even though it did not need this
1990 information. It now does the scan only if it needs to find either the
1991 size of the count of files.
1993 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1995 PH/52 Two bugs concerned with error handling when the smtp transport is
1998 (i) Exim was not creating retry information for temporary errors given
1999 for individual recipients after the DATA command when the smtp transport
2000 was used in LMTP mode. This meant that they could be retried too
2001 frequently, and not timed out correctly.
2003 (ii) Exim was setting the flag that allows error details to be returned
2004 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2005 recipients that were returned after the DATA command.
2007 PH/53 This is related to PH/52, but is more general: for any failing address,
2008 when detailed error information was permitted to be returned to the
2009 sender, but the error was temporary, then after the final timeout, only
2010 "retry timeout exceeded" was returned. Now it returns the full error as
2011 well as "retry timeout exceeded".
2013 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2014 do this, and (what is worse) MTAs that accept it.
2016 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2017 will now be deprecated.
2019 PH/56 New os.c-cygwin from the Cygwin maintainer.
2021 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2022 formats (previously only available in exim formats via -bpr, -bpru,
2023 and -bpra. Now also available in native and exiqgrep formats)
2025 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2026 with very large, slow to parse queues
2028 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2030 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2032 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2033 responses to authentication challenges, though it was showing the
2034 challenges; (ii) I've removed the CR characters from the debug output for
2037 PH/58 Allow for the insertion of a newline as well as a space when a string
2038 is turned into more than one encoded-word during RFC 2047 encoding. The
2039 Sieve code now uses this.
2041 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2042 data_4xx, lost_connection, tls_required.
2044 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2045 message was being sent as an SMTP response.
2047 PH/61 Add -l and -k options to exicyclog.
2049 PH/62 When verifying, if an address was redirected to one new address, so that
2050 verification continued, and the new address failed or deferred after
2051 having set something in $address_data, the value of $address_data was not
2052 passed back to the ACL. This was different to the case when no
2053 redirection occurred. The value is now passed back in both cases.
2055 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2056 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2057 use login_cap.h, so on its own it isn't the distinguishing feature. The
2058 new name refers directly to the setclassresources() function.
2060 PH/65 Added configuration files for NetBSD3.
2062 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2064 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2065 is preferred over IPv4.
2067 PH/68 The bounce_return_message and bounce_return_body options were not being
2068 honoured for bounces generated during the reception of non-SMTP messages.
2069 In particular, this applied to messages rejected by the ACL. This bug has
2070 been fixed. However, if bounce_return_message is true and bounce_return_
2071 body is false, the headers that are returned for a non-SMTP message
2072 include only those that have been read before the error was detected.
2073 (In the case of an ACL rejection, they have all been read.)
2075 PH/69 The HTML version of the specification is now built in a directory called
2076 spec_html instead of spec.html, because the latter looks like a path with
2077 a MIME-type, and this confuses some software.
2079 PH/70 Catch two compiler warnings in sieve.c.
2081 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2082 function verify_get_ident() calls ip_connect() to connect a socket, but
2083 if the "connect()" function timed out, ip_connect() used to close the
2084 socket. However, verify_get_ident() also closes the socket later, and in
2085 between Exim writes to the log, which may get opened at this point. When
2086 the socket was closed in ip_connect(), the log could get the same file
2087 descriptor number as the socket. This naturally causes chaos. The fix is
2088 not to close the socket in ip_connect(); the socket should be closed by
2089 the function that creates it. There was only one place in the code where
2090 this was missing, in the iplookup router, which I don't think anybody now
2091 uses, but I've fixed it anyway.
2093 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2094 well as to direct DNS lookups. Otherwise the handling of names in host
2095 lists is inconsistent and therefore confusing.
2101 PH/01 Two changes to the default runtime configuration:
2103 (1) Move the checks for relay_from_hosts and authenticated clients from
2104 after to before the (commented out) DNS black list checks.
2106 (2) Add control=submission to the relay_from_hosts and authenticated
2107 clients checks, on the grounds that messages accepted by these
2108 statements are most likely to be submissions.
2110 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2112 (1) Generate an error if the third argument for the ${prvs expansion is
2115 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2118 (3) Reset the variables that are obtained from the first argument of
2119 ${prvscheck and used in the second argument before leaving the code,
2120 because their memory is reclaimed, so using them afterwards may do
2123 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2124 one (it's much easier than Tom thought :-).
2126 (5) Because of (4), we can now allow for the use of $prvscheck_result
2127 inside the third argument.
2129 PH/03 For some reason, the default setting of PATH when running a command from
2130 a pipe transport was just "/usr/bin". I have changed it to
2133 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2134 anything to be listed in the output from -bV.
2136 PH/05 When a filter generated an autoreply, the entire To: header line was
2137 quoted in the delivery log line, like this:
2139 => >A.N.Other <ano@some.domain> <original@ddress> ...
2141 This has been changed so that it extracts the operative address. There
2142 may be more than one such address. If so, they are comma-separated, like
2145 => >ano@some.domain,ona@other.domain <original@ddress> ...
2147 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2148 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2149 not being looked up in the rDNS to get a host name, Exim was showing the
2150 IP address twice in Received: lines, even though the IP addresses were
2151 identical. For example:
2153 Received: from [1.2.3.4] (helo=[1.2.3.4])
2155 However, if the real host name was known, it was omitting the HELO data
2156 if it matched the actual IP address. This has been tidied up so that it
2157 doesn't show the same IP address twice.
2159 PH/07 When both +timestamp and +memory debugging was on, the value given by
2160 $tod_xxx expansions could be wrong, because the tod_stamp() function was
2161 called by the debug printing, thereby overwriting the timestamp buffer.
2162 Debugging no longer uses the tod_stamp() function when +timestamp is set.
2164 PH/08 When the original message was included in an autoreply transport, it
2165 always said "this is a copy of the message, including all the headers",
2166 even if body_only or headers_only was set. It now gives an appropriate
2169 PH/09 Applied a patch from the Sieve maintainer which:
2171 o fixes some comments
2172 o adds the (disabled) notify extension core
2173 o adds some debug output for the result of if/elsif tests
2174 o points to the current vacation draft in the documentation
2175 and documents the missing references header update
2179 o fixes a bug in processing the envelope test (when testing
2180 multiple envelope elements, the last element determinted the
2183 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
2184 Electronic Mail") by including:
2186 Auto-submitted: auto-generated
2188 in the messages that it generates (bounce messages and others, such as
2189 warnings). In the case of bounce messages for non-SMTP mesages, there was
2190 also a typo: it was using "Auto_submitted" (underscore instead of
2191 hyphen). Since every message generated by Exim is necessarily in response
2192 to another message, thes have all been changed to:
2194 Auto-Submitted: auto-replied
2196 in accordance with these statements in the RFC:
2198 The auto-replied keyword:
2200 - SHOULD be used on messages sent in direct response to another
2201 message by an automatic process,
2203 - MUST NOT be used on manually-generated messages,
2205 - MAY be used on Delivery Status Notifications (DSNs) and Message
2206 Disposition Notifications (MDNs),
2208 - MUST NOT be used on messages generated by automatic or periodic
2209 processes, except for messages which are automatic responses to
2212 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
2213 to the default Received: header definition.
2215 PH/12 Added log selector acl_warn_skipped (default on).
2217 PH/13 After a successful wildlsearch lookup, discard the values of numeric
2218 variables because (a) they are in the wrong storage pool and (b) even if
2219 they were copied, it wouldn't work properly because of the caching.
2221 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
2222 checking when decoding. Apparently there are clients that generate
2223 overlong encoded strings. Why am I not surprised?
2225 PH/15 If the first argument of "${if match_address" was not empty, but did not
2226 contain an "@" character, Exim crashed. Now it writes a panic log message
2227 and treats the condition as false.
2229 PH/16 In autoreply, treat an empty string for "once" the same as unset.
2231 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
2232 extension "envelope-auth". The code is finished and in agreement with
2233 other implementations, but there is no documentation so far and in fact,
2234 nobody wrote the draft yet. This extension is currently #undef'ed, thus
2235 not changing the active code.
2237 Print executed "if" and "elsif" statements when debugging is used. This
2238 helps a great deal to understand what a filter does.
2240 Document more things not specified clearly in RFC3028. I had all this
2241 sorted out, when out of a sudden new issues came to my mind. Oops."
2243 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
2246 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
2247 canonical form (as documented). However, after a host name lookup from
2248 the IP address, check_host() was doing a simple string comparison with
2249 addresses acquired from the DNS when checking that the found name did
2250 have the original IP as one of its addresses. Since any found IPv6
2251 addresses are likely to be in abbreviated form, the comparison could
2252 fail. Luckily, there already exists a function for doing the comparison
2253 by converting both addresses to binary, so now that is used instead of
2254 the text comparison.
2256 PH/20 There was another similar case to PH/19, when a complete host name was
2257 given in a host list; looking up its IP address could give an abbreviated
2258 form, whereas the current host's name might or might not be abbreviated.
2259 The same fix has been applied.
2265 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
2266 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
2269 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
2270 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
2272 PH/03 Typo: missing ".o" in src/pcre/Makefile.
2274 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
2275 header line, restrict the check to what is listed in RFCs 2369 and 2929.
2276 Also, for "Auto-Submitted", treat anything other than "no" as
2277 non-personal, in accordance with RFC 3834. (Previously it treated
2278 anything starting "auto-" as non-personal.)
2280 TF/01 The control=submission/name=... option had a problem with syntax
2281 errors if the name included a slash character. The /name= option
2282 now slurps the rest of the string, so it can include any characters
2283 but it must come last in the list of options (after /sender_retain
2286 PH/05 Some modifications to the interface to the fake nameserver for the new
2294 TK/01 Added the "success_on_redirect" address verification option. See
2295 NewStuff for rationale and an example.
2297 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
2299 PH/02 Patch to exigrep to allow it to work on syslog lines.
2301 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
2302 fread() to skip over the body file's header line, because in Cygwin the
2303 header line is locked and is inaccessible.
2305 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
2306 co-exist for some time) to make it clear that it is the Exim ID that is
2307 referenced, not the Message-ID: header line.
2309 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
2310 string_format() function, because snprintf() does not exist on all
2313 PH/06 The use of forbid_filter_existstest now also locks out the use of the
2314 ${stat: expansion item.
2316 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
2317 protocol synchronization error", to keep the pedants happy.
2319 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
2320 well as for IRIX systems, when gcc is being used. See the host.c source
2323 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
2325 PH/10 Named domain lists were not working if used in a queue_smtp_domains
2328 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
2329 transport and to the smtp transport in LMTP mode.
2331 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
2333 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
2334 run a filter in a subprocess. This could lead to confusion in subsequent
2335 lookups in the parent process. There should also be a search_tidyup() at
2336 the end of the subprocess.
2338 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
2339 only if the host matched helo_try_verify_hosts, which caused the
2340 verification to occur when the EHLO/HELO command was issued. The ACL just
2341 tested the remembered result. Now, if a previous verification attempt has
2342 not happened, "verify = helo" does it there and then.
2344 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
2346 TK/03 Fix log output including CR from clamd.
2348 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
2349 exist provoked a memory error which could cause a segfault.
2351 PH/15 Installed PCRE 6.2
2353 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
2355 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
2356 of the problem. Specifically, suggested +O2 rather than +O1 for the
2359 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
2361 PH/20 If a delivery was routed to a non-standard port by means of an SRV
2362 record, the port was not correctly logged when the outgoing_port log
2363 selector was set (it logged the transort's default port).
2365 PH/21 Added support for host-specific ports to manualroute, queryprogram,
2366 fallback_hosts, and "hosts" in the smtp transport.
2368 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
2369 host errors such as "Connection refused".
2371 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
2372 authentication with radiusclient 0.4.9:
2374 - Error returned from rc_read_config was caught wrongly
2375 - Username/password not passed on to radius server due to wrong length.
2377 The presumption is that some radiusclient API changes for 4.51/PH/17
2378 were not taken care of correctly. The code is still untested by me (my
2379 Linux distribution still has 0.3.2 of radiusclient), but it was
2380 contributed by a Radius user.
2382 PH/24 When doing a callout, the value of $domain wasn't set correctly when
2383 expanding the "port" option of the smtp transport.
2385 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
2386 while reading a MIME header. Thanks to Tom Hughes for a patch.
2388 PH/24 Include config.h inside local_scan.h so that configuration settings are
2391 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
2392 that in an ACL for RCPT (for example), you can examine exactly what was
2395 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
2396 commands, but it was not correctly comparing the address with the actual
2397 client host address. Thus, it would show the EHLO address in Received:
2398 header lines when this was not necessary.
2400 PH/27 Added the % operator to ${eval:}.
2402 PH/28 Exim tries to create and chdir to its spool directory when it starts;
2403 it should be ignoring failures (because with -C, for example, it has lost
2404 privilege). It wasn't ignoring creation failures other than "already
2407 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
2410 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
2411 because an input line was too long, either on its own, or by virtue of
2412 too many continuations, the temporary file was not being removed, and the
2413 return code was incorrect.
2415 PH/31 Missing "BOOL" in function definition in filtertest.c.
2417 PH/32 Applied Sieve patches from the maintainer.
2419 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
2421 PH/33 Added "verify = not_blind".
2423 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
2424 Local/Makefile (with some defaults set). These are used in built scripts
2425 such as exicyclog, but they have never been used in the exim_install
2426 script (though there are many overriding facilities there). I have
2427 arranged that the exim_install script now takes note of these two
2430 PH/35 Installed configuration files for Dragonfly.
2432 PH/36 When a locally submitted message by a trusted user did not contain a
2433 From: header, and the sender address was obtained from -f or from an SMTP
2434 MAIL command, and the trusted user did not use -F to supply a sender
2435 name, $originator_name was incorrectly used when constructing a From:
2436 header. Furthermore, $originator_name was used for submission mode
2437 messages from external hosts without From: headers in a similar way,
2438 which is clearly wrong.
2440 PH/37 Added control=suppress_local_fixups.
2442 PH/38 When log_selector = +received_sender was set, and the addition of the
2443 sender made the log line's construction buffer exactly full, or one byte
2444 less than full, an overflow happened when the terminating "\n" was
2447 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
2448 when the result of a list match is failure because a DNS lookup failed.
2450 PH/40 RM_COMMAND is now used in the building process.
2452 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
2453 the "build-* directories that it finds.
2455 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
2456 address in a domain literal was a prefix of an interface address.
2458 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
2459 when verifying a sender address, unless rewrite_headers is false.
2461 PH/44 Wrote a long comment about why errors_to addresses are verified as
2462 recipients, not senders.
2464 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
2465 the ratelimit ACL was added.
2467 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
2469 PH/46 Added extra information about PostgreSQL errors to the error string.
2471 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
2472 avoiding the need to install special zones in a real server. This is
2473 backwards compatible; if it can't find the fake resolver, it drops back.
2474 Thus, both old and new test suites can be run.
2476 TF/02 Added util/ratelimit.pl
2478 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
2479 clock is set back in time.
2481 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
2482 Candler <B.Candler@pobox.com>.
2484 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
2485 OK for addresses that are the result of redirections.
2487 PH/48 A number of further additions for the benefit of the new test suite,
2488 including a fake gethostbyname() that interfaces to the fake DNS resolver
2491 TF/06 The fix for widen_domains has also been applied to qualify_single and
2492 search_parents which are the other dnslookup options that can cause
2495 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
2498 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
2500 TF/07 Exim produced the error message "an SRV record indicated no SMTP
2501 service" if it encountered an MX record with an empty target hostname.
2502 The message is now "an MX or SRV record indicated no SMTP service".
2504 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
2505 if the DNS of the sending site is misconfigured. This is quite a
2506 common situation. This change restores the behaviour of treating a
2507 helo verification defer as a failure.
2509 PH/51 If self=fail was set on a router, the bounce message did not include the
2510 actual error message.
2516 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
2518 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
2519 command itself ended in error, the underlying message about the transport
2520 filter timeout was being overwritten with the pipe command error. Now the
2521 underlying error message should be appended to the second error message.
2523 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
2525 PH/02 Reduce the amount of output that "make" produces by default. Full output
2526 can still be requested.
2528 PH/03 The warning log line about a condition test deferring for a "warn" verb
2529 was being output only once per connection, rather than after each
2530 occurrence (because it was using the same function as for successful
2531 "warn" verbs). This seems wrong, so I have changed it.
2533 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
2534 it should not have, which might have caused a crash in the right
2535 circumstances, but probably never did.
2537 PH/04 Installed a modified version of Tony Finch's patch to make submission
2538 mode fix the return path as well as the Sender: header line, and to
2539 add a /name= option so that you can make the user's friendly name appear
2542 TF/03 Added the control = fakedefer ACL modifier.
2544 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
2545 Mark Lowes for thorough testing.
2547 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
2549 TK/03 Merged latest SRS patch from Miles Wilton.
2551 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
2552 with the definition in sysexits.h (which is #included earlier).
2553 Fortunately, Exim does not actually use EX_OK. The code used to try to
2554 preserve the sysexits.h value, by assumimg that macro definitions were
2555 scanned for macro replacements. I have been disabused of this notion,
2556 so now the code just undefines EX_OK before #including unistd.h.
2558 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
2559 in the smtp transport. When a block could not be written in a single
2560 write() function, the timeout was being re-applied to each part-write.
2561 This seems wrong - if the receiver was accepting one byte at a time it
2562 would take for ever. The timeout is now adjusted when this happens. It
2563 doesn't have to be particularly precise.
2565 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
2566 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
2568 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
2569 without a domain if the check to <postmaster@domain> fails.
2571 SC/01 Eximstats: added -xls and the ability to specify output files
2572 (patch written by Frank Heydlauf).
2574 SC/02 Eximstats: use FileHandles for outputing results.
2576 SC/03 Eximstats: allow any combination of xls, txt, and html output.
2578 SC/04 Eximstats: fixed display of large numbers with -nvr option
2580 SC/05 Eximstats: fixed merging of reports with empty tables.
2582 SC/06 Eximstats: added the -include_original_destination flag
2584 SC/07 Eximstats: removed tabs and trailing whitespace.
2586 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
2588 TK/06 MBOX spool code: Add real "From " MBOX separator line
2589 so the .eml file is really in mbox format (even though
2590 most programs do not really care). Patch from Alex Miller.
2592 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
2593 The latter is generated from $received_to and is only set if the
2594 message has one envelope recipient. SA can use these headers,
2595 obviously out-of-the-box. Patch from Alex Miller.
2597 PH/08 The ${def test on a variable was returning false if the variable's
2598 value was "0", contrary to what the specification has always said!
2599 The result should be true unless the variable is empty.
2601 PH/09 The syntax error of a character other than { following "${if
2602 def:variable_name" (after optional whitespace) was not being diagnosed.
2603 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
2604 accidental colon was present, for example, could give incorrect results.
2606 PH/10 Tidied the code in a number of places where the st_size field of a stat()
2607 result is used (not including appendfile, where other changes are about
2610 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
2611 This involved changing a lot of size variables from int to off_t. It
2612 should work with maildirs and everything.
2614 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
2615 spamd dying while we are connected to it.
2617 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
2620 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
2621 function for BDB 4.3.
2623 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
2625 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
2626 the sources for PCRE have been re-arranged and more files are now
2629 PH/15 The code I had for printing potentially long long variables in PH/11
2630 above was not the best (it lost precision). The length of off_t variables
2631 is now inspected at build time, and an appropriate printing format (%ld
2632 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
2633 to be "long long int" or "long int". This is needed for the internal
2634 formatting function string_vformat().
2636 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
2637 the configuration file to be ":syslog", then the script "guesses" where
2638 the logs files are, rather than using the compiled in default. In our
2639 case the guess is not the same as the compiled default, so the script
2640 suddenly stopped working when I started to use syslog. The patch checks
2641 to see if log_file_path is "". If so, it attempts to read it from exim
2642 with no configuration file to get the compiled in version, before it
2643 falls back to the previous guessing code."
2645 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
2646 implementing BATV in an Exim configuration. See NewStuff for the gory
2649 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
2650 Makefile that are specific to HP-UX.
2652 PH/18 If the "use_postmaster" option was set for a recipient callout together
2653 with the "random" option, the postmaster address was used as the MAIL
2654 FROM address for the random test, but not for the subsequent recipient
2655 test. It is now used for both.
2657 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
2658 patch removes a few documentation additions to RFC 3028, because the
2659 latest draft now contains them. It adds the new en;ascii-case comparator
2660 and a new error check for 8bit text in MIME parts. Comparator and
2661 require names are now matched exactly. I enabled the subaddress
2662 extension, but it is not well tested yet (read: it works for me)."
2664 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
2665 rework some of the code of TK/09 above to avoid the hardwired use of
2666 "%lld" and "long long". Replaced the call to snprintf() with a call to
2669 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
2670 records point to non-existent hosts", "retry timeout exceeded", and
2671 "retry time not reached for any host after a long failure period".
2673 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
2674 experimental DomainKeys support:
2676 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
2677 (2) On an error such as an illegally used "control", the wrong name for
2678 the control was given.
2680 These problems did NOT occur unless DomainKeys support was compiled.
2682 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
2684 PH/24 Added ${if match_ip condition.
2686 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
2687 databases so that it will be absolutely obvious if a crash occurs in the
2688 DB library. This is a regular occurrence (often caused by mis-matched
2691 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
2692 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
2693 picked up on a user's system that detects such things. There doesn't seem
2694 to be a gcc warning option for this - only an attribute that has to be
2695 put on the function's prototype. It seems that in Fedora Core 4 they have
2696 set this on a number of new functions. No doubt there will be more in due
2699 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
2700 specify a transport. However, if an address that was verified by such a
2701 router was the subject of a callout, Exim crashed because it tried to
2702 read the rcpt_include_affixes from the non-existent transport. Now it
2703 just assumes that the setting of that option is false. This bug was
2704 introduced by 4.51/PH/31.
2706 PH/28 Changed -d+all to exclude +memory, because that information is very
2707 rarely of interest, but it makes the output a lot bigger. People tend to
2708 do -d+all out of habit.
2710 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
2711 code in os-type was giving problems when libc.so lives in lib64, like on
2714 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
2715 aren't the modern standard, and it seems that some systems' include files
2716 don't always have them. Exim was already checking for some of the newer
2717 ones like T_AAAA, and defining it itself. I've added checks for all the
2718 record types that Exim uses.
2720 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
2721 not automatically generating a new one, as it is supposed to. This
2722 prevented TLS from working. If the file did exist, but contained invalid
2723 data, a new version was generated, as expected. It was only the case of a
2724 non-existent file that was broken.
2726 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
2727 with a change in libdomainkeys > 0.64.
2729 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
2730 from DNS. If the selector record carries the flag, it now has
2731 precedence over the domain-wide flag.
2733 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
2735 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
2736 the use of a port name that isn't defined in /etc/services) occurred, the
2737 message was deferred as in a normal delivery, and thus remained on the
2738 spool, instead of being failed because of the mua_wrapper setting. This
2739 is now fixed, and I tidied up some of the mua_wrapper messages at the
2742 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
2743 the messages in a hash of arrays rather than using individual hashes.
2744 This is a bit cleaner and results in dramatic memory savings, albeit
2745 at a slight CPU cost.
2747 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
2748 as requested by Marc Sherman.
2750 SC/10 Eximstats: added histograms for user specified patterns as requested
2753 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
2755 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
2756 fopen() in the content-scanning modules that did not already have it.
2762 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
2763 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
2765 TK/02 Fix ACL "control" statement not being available in MIME ACL.
2767 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
2769 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
2770 to test Sieve filters that use "vacation".
2772 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
2773 that changes the way the GnuTLS parameters are stored in the cache file.
2774 The new format can be generated externally. For backward compatibility,
2775 if the data in the cache doesn't make sense, Exim assumes it has read an
2776 old-format file, and it generates new data and writes a new file. This
2777 means that you can't go back to an older release without removing the
2780 PH/03 A redirect router that has both "unseen" and "one_time" set does not
2781 work if there are any delivery delays because "one_time" forces the
2782 parent to be marked "delivered", so its unseen clone is never tried
2783 again. For this reason, Exim now forbids the simultaneous setting of
2786 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
2787 redirected to themselves ("homonym" addresses). Read the long ChangeLog
2788 entry if you want to know the details. The fix, however, neglected to
2789 consider the case when local delivery batching is involved. The test for
2790 "previously delivered" was not happening when checking to see if an
2791 address could be batched with a previous (undelivered) one; under
2792 certain circumstances this could lead to multiple deliveries to the same
2795 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
2796 in its include files, and this causes problems building Exim.
2798 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
2799 header_syntax) but Exim was just ignoring anything given after a slash.
2800 In particular, this caused confusion with an attempt to use "verify =
2801 reverse_host_lookup/defer_ok". An error is now given when options are
2802 supplied for verify items that do not have them. (Maybe reverse_host_
2803 lookup should have a defer_ok option, but that's a different point.)
2805 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
2806 defined by RFC 821) to 2048, because there were problems with some AUTH
2807 commands, and RFC 1869 says the size should be increased for extended
2808 SMTP commands that take arguments.
2810 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
2813 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
2814 "unknown" error; now it says that the functionality isn't in the binary.
2816 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
2817 an address' error message when a string expansion fails (syntax or
2818 whatever). Otherwise the password may appear in the log. Following change
2819 PH/42 below, there is no longer a chance of it appearing in a bounce
2822 PH/11 Installed exipick version 20050225.0 from John Jetmore.
2824 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2825 of its addresses was ever tried. (Bugzilla bug #2.)
2827 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2828 the result incorrectly in the debug output. (It correctly added a newline
2829 to what was transported.)
2831 TF/01 Added $received_time.
2833 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2834 commented out examples of how to interface to a virus scanner and to
2835 SpamAssassin. Also added commented examples of av_scanner and
2836 spamd_address settings.
2838 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2839 and controls are allowed in which ACLs. There were a couple of minor
2840 errors. Some of the entries in the conditions table (which is a table of
2841 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2842 negation of where the condition IS allowed.
2844 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2846 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2847 header file does not have a version number, so I've had to invent a new
2848 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2849 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2850 radiusclient), but it was contributed by a Radius user.
2852 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2853 files or directories, for OpenSSL.
2855 PH/19 When an Exim process that is running as root has to create an Exim log
2856 file, it does so in a subprocess that runs as exim:exim so as to get the
2857 ownership right at creation (otherwise, other Exim processes might see
2858 the file with the wrong ownership). There was no test for failure of this
2859 fork() call, which would lead to the process getting stuck as it waited
2860 for a non-existent subprocess. Forks do occasionally fail when resources
2861 run out. I reviewed all the other calls to fork(); they all seem to check
2864 PH/20 When checking for unexpected SMTP input at connect time (before writing
2865 the banner), Exim was not dealing correctly with a non-positive return
2866 from the read() function. If the client had disconnected by this time,
2867 the result was a log entry for a synchronization error with an empty
2868 string after "input=" when read() returned zero. If read() returned -1
2869 (an event I could not check), uninitialized data bytes were printed.
2870 There were reports of junk text (parts of files, etc) appearing after
2873 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2875 PH/22 Added support for macro redefinition, and (re)definition in between
2876 driver and ACL definitions.
2878 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2879 forgetting to use the resulting value; it was using the unexpanded value.
2881 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2882 hadn't been configured. The fix is from Juergen Kreileder, who
2883 understands it better than I do:
2885 "Here's what I see happening with three configured cyrus_sasl
2886 authenticators configured (plain, login, cram-md5):
2888 On startup auth_cyrus_sasl_init() gets called for each of these.
2889 This means three calls to sasl_listmech() without a specified mech_list.
2890 => SASL tests which mechs of all available mechs actually work
2891 => three warnings about OTP not working
2892 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2894 With the patch, sasl_listmech() also gets called three times. But now
2895 SASL's mech_list option is set to the server_mech specified in the the
2896 authenticator. Or in other words, the answer from sasl_listmech()
2897 gets limited to just the mech you're testing for (which is different
2899 => the return list contains just 'plain' or 'login', 'cram-md5' or
2900 nothing depending on the value of ob->server_mech.
2902 I've just tested the patch: Authentication still works fine,
2903 unavailable mechs specified in the exim configuration are still
2904 caught, and the auth.log warnings about OTP are gone."
2906 PH/25 When debugging is enabled, the contents of the command line are added
2907 to the debugging output, even when log_selector=+arguments is not
2910 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2911 answer is "GNU", and only if the return is "GNU/something" is the answer
2914 PH/27 $acl_verify_message is now set immediately after the failure of a
2915 verification in an ACL, and so is available in subsequent modifiers. In
2916 particular, the message can be preserved by coding like this:
2918 warn !verify = sender
2919 set acl_m0 = $acl_verify_message
2921 Previously, $acl_verify_message was set only while expanding "message"
2922 and "log_message" when a very denied access.
2924 PH/28 Modified OS/os.c-Linux with
2926 -#ifndef OS_LOAD_AVERAGE
2927 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2929 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2930 nomenclature these days.)
2932 PH/29 Installed patch from the Sieve maintainer that adds the options
2933 sieve_useraddress and sieve_subaddress to the redirect router.
2935 PH/30 In these circumstances:
2936 . Two addresses routed to the same list of hosts;
2937 . First host does not offer TLS;
2938 . First host accepts first address;
2939 . First host gives temporary error to second address;
2940 . Second host offers TLS and a TLS session is established;
2941 . Second host accepts second address.
2942 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2943 and peerdn, if requested) that were in fact used only for the second
2946 PH/31 When doing a callout as part of verifying an address, Exim was not paying
2947 attention to any local part prefix or suffix that was matched by the
2948 router that accepted the address. It now behaves in the same way as it
2949 does for delivery: the affixes are removed from the local part unless
2950 rcpt_include_affixes is set on the transport.
2952 PH/32 Add the sender address, as F=<...>, to the log line when logging a
2953 timeout during the DATA phase of an incoming message.
2955 PH/33 Sieve envelope tests were broken for match types other than :is. I have
2956 applied a patch sanctioned by the Sieve maintainer.
2958 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2959 the uid or gid is negative. A case of a negative gid caused this to be
2960 noticed. The fix allows for either to be negative.
2962 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2963 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2966 PH/36 The change PH/12 above was broken. Fixed it.
2968 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2969 the grounds that routing the same address twice would always produce the
2970 same answer. This might have been true once, but it is certainly no
2971 longer true now. Routing a child address may depend on the previous
2972 routing that produced that child. Some complicated redirection strategies
2973 went wrong when messages had multiple recipients, and made Exim's
2974 behaviour dependent on the order in which the addresses were given.
2976 I have moved the duplicate checking until after the routing is complete.
2977 Exim scans the addresses that are assigned to local and remote
2978 transports, and removes any duplicates. This means that more work will be
2979 done, as duplicates will always all be routed, but duplicates are
2980 presumably rare, so I don't expect this is of any significance.
2982 For deliveries to pipes, files, and autoreplies, the duplicate checking
2983 still happens during the routing process, since they are not going to be
2986 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2987 It corrects a timeout issue with spamd. This is Ian's comment: "The
2988 background is that sometimes spamd either never reads data from a
2989 connection it has accepted, or it never writes response data. The exiscan
2990 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2991 blindly assumes that writes won't block so it may never time out."
2993 PH/39 Allow G after quota size as well as K and M.
2995 PH/40 The value set for $authenticated_id in an authenticator may not contain
2996 binary zeroes or newlines because the value is written to log lines and
2997 to spool files. There was no check on this. Now the value is run through
2998 the string_printing() function so that such characters are converted to
2999 printable escape sequences.
3001 PH/41 $message_linecount is a new variable that contains the total number of
3002 lines in the message. Compare $body_linecount, which is the count for the
3005 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3006 bounce and delay warning messages, except in certain special cases, which
3009 (a) An SMTP error message from a remote host;
3010 (b) A message specified in a :fail: redirection;
3011 (c) A message specified in a "fail" command in a system filter;
3012 (d) A message specified in a FAIL return from the queryprogram router;
3013 (e) A message specified by the cannot_route_message router option.
3015 In these cases only, Exim does include the error details in bounce and
3016 warning messages. There are also a few cases where bland messages such
3017 as "unrouteable address" or "local delivery error" are given.
3019 PH/43 $value is now also set for the "else" part of a ${run expansion.
3021 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3022 being worked on, but at least Exim now implements the latest version to
3025 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3026 process to complete was treated as a delivery failure, a timeout while
3027 writing the message to the pipe was logged, but erroneously treated as a
3028 successful delivery. Such timeouts include transport filter timeouts. For
3029 consistency with the overall process timeout, these timeouts are now
3030 treated as errors, giving rise to delivery failures by default. However,
3031 there is now a new Boolean option for the pipe transport called
3032 timeout_defer, which, if set TRUE, converts the failures into defers for
3033 both kinds of timeout. A transport filter timeout is now identified in
3036 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3037 systems where "make" and "gmake" are different, calling "gmake" at top
3038 level broke things. I've arranged for the value of $(MAKE) to be passed
3039 from the Makefile to this script so that it can call the same version of
3043 A note about Exim versions 4.44 and 4.50
3044 ----------------------------------------
3046 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3047 changes of various kinds. As a consequence, a big documentation update was
3048 needed. This delayed the release for rather longer than seemed good, especially
3049 in the light of a couple of (minor) security issues. Therefore, the changes
3050 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3051 release. So 4.44 and 4.50 are in effect two different branches that both start
3054 I have left the 4.50 change log unchanged; it contains all the changes since
3055 4.43. The change log for 4.44 is below; many of its items are identical to
3056 those for 4.50. This seems to be the most sensible way to preserve the
3057 historical information.
3063 1. Minor wording change to the doc/README.SIEVE file.
3065 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3066 computation of the current number of files was incorrect.
3068 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3069 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3072 4. Give more explanation in the error message when the command for a transport
3073 filter fails to execute.
3075 5. There are several places where Exim runs a non-Exim command in a
3076 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3077 was being done only for the command run by the queryprogram router. It is
3078 now done for all such subprocesses. The other cases are: ${run, transport
3079 filters, and the commands run by the lmtp and pipe transports.
3081 6. Added CONFIGURE_GROUP build-time option.
3083 7. Some older OS have a limit of 256 on the maximum number of file
3084 descriptors. Exim was using setrlimit() to set 1000 as a large value
3085 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3086 systems. I've change it so that if it can't get 1000, it tries for 256.
3088 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3089 was an oversight, and furthermore, ever since the addition of extra
3090 controls (e.g. 4.43/32), the checks on when to allow different forms of
3091 "control" were broken. There should now be diagnostics for all cases when a
3092 control that does not make sense is encountered.
3094 9. Added the /retain_sender option to "control=submission".
3096 10. $recipients is now available in the predata ACL (oversight).
3098 11. Tidy the search cache before the fork to do a delivery from a message
3099 received from the command line. Otherwise the child will trigger a lookup
3100 failure and thereby defer the delivery if it tries to use (for example) a
3101 cached ldap connection that the parent has called unbind on.
3103 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3104 of $address_data from the recipient verification was clobbered by the
3105 sender verification.
3107 13. The value of address_data from a sender verification is now available in
3108 $sender_address_data in subsequent conditions in the ACL statement.
3110 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3112 15. Added a new option "connect=<time>" to callout options, to set a different
3115 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3116 was its contents. (It was OK if the option was not defined at all.)
3118 17. A "Completed" log line is now written for messages that are removed from
3119 the spool by the -Mrm option.
3121 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3122 information about exactly what failed.
3124 19. Added -dd to debug only the daemon process.
3126 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3127 handles timeouts, both on the server side and network timeouts. Renamed the
3128 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3130 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3131 It is now set to "smtps".
3133 22. $host_address is now set to the target address during the checking of
3134 ignore_target_hosts.
3136 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3137 being passed; this would have caused $sender_host_name to have been used if
3138 matching the list had actually called for a host name (not very likely,
3139 since this list is usually IP addresses). A host name is now passed as
3142 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3143 code that specifies a non-restarting handler (typically sigaction() in
3144 modern systems) in an attempt to fix a rare and obscure crash bug.
3146 25. Narrowed the window for a race in the daemon that could cause it to ignore
3147 SIGCHLD signals. This is not a major problem, because they are used only to
3148 wake it up if nothing else does.
3150 26. A malformed maildirsize file could cause Exim to calculate negative values
3151 for the mailbox size or file count. Odd effects could occur as a result.
3152 The maildirsize information is now recalculated if the size or filecount
3155 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3156 support for a long time. Removed HAVE_SYS_VFS_H.
3158 28. Installed the latest version of exipick from John Jetmore.
3160 29. In an address list, if the pattern was not a regular expression, an empty
3161 subject address (from a bounce message) matched only if the pattern was an
3162 empty string. Non-empty patterns were not even tested. This was the wrong
3163 because it is perfectly reasonable to use an empty address as part of a
3164 database query. An empty address is now tested by patterns that are
3165 lookups. However, all the other forms of pattern expect the subject to
3166 contain a local part and a domain, and therefore, for them, an empty
3167 address still always fails if the pattern is not itself empty.
3169 30. Exim went into a mad DNS loop when attempting to do a callout where the
3170 host was specified on an smtp transport, and looking it up yielded more
3171 than one IP address.
3173 31. Re-factored the code for checking spool and log partition space into a
3174 function that finds that data and another that does the check. The former
3175 is then used to implement four new variables: $spool_space, $log_space,
3176 $spool_inodes, and $log_inodes.
3178 32. The RFC2047 encoding function was originally intended for short strings
3179 such as real names; it was not keeping to the 75-character limit for
3180 encoded words that the RFC imposes. It now respects the limit, and
3181 generates multiple encoded words if necessary. To be on the safe side, I
3182 have increased the buffer size for the ${rfc2047: expansion operator from
3185 33. It is now permitted to omit both strings after an "if" condition; if the
3186 condition is true, the result is "true". As before, when the second string
3187 is omitted, a false condition yields an empty string. This makes it less
3188 cumbersome to write custom ACL and router conditions.
3190 34. Failure to deliver a bounce message always caused it to be frozen, even if
3191 there was an errors_to setting on the router. The errors_to setting is now
3194 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3195 canonical form (fully expanded) before being placed in
3196 $sender_host_address.
3198 36. The table in the code that translates DNS record types into text (T_A to
3199 "A" for instance) was missing entries for NS and CNAME. It is just possible
3200 that this could have caused confusion if both these types were looked up
3201 for the same domain, because the text type is used as part of Exim's
3202 per-process caching. But the chance of anyone hitting this buglet seems
3205 37. The dnsdb lookup has been extended in a number of ways.
3207 (1) There is a new type, "zns", which walks up the domain tree until it
3208 finds some nameserver records. It should be used with care.
3210 (2) There is a new type, "mxh", which is like "mx" except that it returns
3211 just the host names, not the priorities.
3213 (3) It is now possible to give a list of domains (or IP addresses) to be
3214 looked up. The behaviour when one of the lookups defers can be
3215 controlled by a keyword.
3217 (4) It is now possible to specify the separator character for use when
3218 multiple records are returned.
3220 38. The dnslists ACL condition has been extended: it is now possible to supply
3221 a list of IP addresses and/or domains to be looked up in a particular DNS
3224 39. Added log_selector=+queue_time_overall.
3226 40. When running the queue in the test harness, wait just a tad after forking a
3227 delivery process, to get repeatability of debugging output.
3229 41. Include certificate and key file names in error message when GnuTLS fails
3230 to set them up, because the GnuTLS error message doesn't include the name
3231 of the failing file when there is a problem reading it.
3233 42. Allow both -bf and -bF in the same test run.
3235 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
3237 44. The "Exiscan patch" is now merged into the mainline Exim source.
3239 45. Sometimes the final signoff response after QUIT could fail to get
3240 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3241 < 0 before doing a fflush(). This bug looks as though it goes back to the
3242 introduction of TLS in release 3.20, but "sometimes" must have been rare
3243 because the tests only now provoked it.
3245 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
3246 (this can affect the format of dates).
3248 47. exim_tidydb, when checking for the continued existence of a message for
3249 which it has found a message-specific retry record, was not finding
3250 messages that were in split spool directories. Consequently, it was
3251 deleting retry records that should have stayed in existence.
3253 48. Steve fixed some bugs in eximstats.
3255 49. The SPA authentication driver was not abandoning authentication and moving
3256 on to the next authenticator when an expansion was forced to fail,
3257 contradicting the general specification for all authenticators. Instead it
3258 was generating a temporary error. It now behaves as specified.
3260 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
3261 (the order specifies the preference for clients). The order is now AES256,
3262 AES128, 3DES, ARCFOUR128.
3264 51. Small patch to Sieve code - explicitly set From: when generating an
3267 52. Exim crashed if a remote delivery caused a very long error message to be
3268 recorded - for instance if somebody sent an entire SpamAssassin report back
3269 as a large number of 550 error lines. This bug was coincidentally fixed by
3270 increasing the size of one of Exim's internal buffers (big_buffer) that
3271 happened as part of the Exiscan merge. However, to be on the safe side, I
3272 have made the code more robust (and fixed the comments that describe what
3275 53. Now that there can be additional text after "Completed" in log lines (if
3276 the queue_time_overall log selector is set), a one-byte patch to exigrep
3277 was needed to allow it to recognize "Completed" as not the last thing in
3280 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
3281 patch that reportedly fixes this has been added. I am not expert enough to
3282 create a test for it. This is what the patch creator wrote:
3284 "I found a little strange behaviour of ldap code when working with
3285 Windows 2003 AD Domain, where users was placed in more than one
3286 Organization Units. When I tried to give exim partial DN, the exit code
3287 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
3288 But simultaneously result of request was absolutely normal ldap result,
3289 so I produce this patch..."
3291 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
3292 REFERENCE, so I have modified the code to exclude the patch when that macro
3295 55. Some experimental protocols are using DNS PTR records for new purposes. The
3296 keys for these records are domain names, not reversed IP addresses. The
3297 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3298 leaves it alone. Component reversal etc. now happens only for IP addresses.
3301 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
3303 57. Double the size of the debug message buffer (to 2048) so that more of very
3304 long debug lines gets shown.
3306 58. The exicyclog utility now does better if the number of log files to keep
3307 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
3309 59. Two changes related to the smtp_active_hostname option:
3311 (1) $smtp_active_hostname is now available as a variable.
3312 (2) The default for smtp_banner uses $smtp_active_hostname instead
3313 of $primary_hostname.
3315 60. The host_aton() function is supposed to be passed a string that is known
3316 to be a valid IP address. However, in the case of IPv6 addresses, it was
3317 not checking this. This is a hostage to fortune. Exim now panics and dies
3318 if the condition is not met. A case was found where this could be provoked
3319 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3320 components; fortuitously, this particular loophole had already been fixed
3321 by change 4.50/55 above.
3323 If there are any other similar loopholes, the new check in host_aton()
3324 itself should stop them being exploited. The report I received stated that
3325 data on the command line could provoke the exploit when Exim was running as
3326 exim, but did not say which command line option was involved. All I could
3327 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3328 running as the user.
3331 61. There was a buffer overflow vulnerability in the SPA authentication code
3332 (which came originally from the Samba project). I have added a test to the
3333 spa_base64_to_bits() function which I hope fixes it.
3336 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
3337 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
3339 63. The daemon start-up calls getloadavg() while still root for those OS that
3340 need the first call to be done as root, but it missed one case: when
3341 deliver_queue_load_max is set with deliver_drop_privilege. This is
3342 necessary for the benefit of the queue runner, because there is no re-exec
3343 when deliver_drop_privilege is set.
3345 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
3346 This has been fixed.
3348 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3349 was in use, was not putting the data itself into the right store pool;
3350 consequently, it could be overwritten for a subsequent message in the same
3351 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3354 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
3356 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
3357 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
3358 the function were treating the return as a boolean value, which happened to
3359 work because 0=false and not-0=true, but is not correct code.
3361 68. The host_aton() function was not handling scoped IPv6 addresses (those
3362 with, for example, "%eth0" on the end) correctly.
3364 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
3365 negated items (that is, ~something) in unsigned ints. Some compilers
3366 apparently mutter when there is no cast.
3368 70. If an address verification called from an ACL failed, and did not produce a
3369 user-specific message (i.e. there was only a "system" message), nothing was
3370 put in $acl_verify_message. In this situation, it now puts the system
3373 71. Change 4.23/11 added synchronization checking at the start of an SMTP
3374 session; change 4.31/43 added the unwanted input to the log line - except
3375 that it did not do this in the start of session case. It now does.
3377 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
3378 This is wrong and can cause the other end to generate a synchronization
3379 error if it is another Exim or anything else that does the synchronization
3380 check. A QUIT command is no longer sent after a timeout.
3382 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
3383 during host lookups.
3385 74. The defer_ok option of callout verification was not working if it was used
3386 when verifying addresses in header lines, that is, for this case:
3388 verify = header_sender/callout=defer_ok
3390 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
3391 those file descriptors could be used for SMTP connections. If anything
3392 wrote to stderr (the example that came up was "warn" in embedded Perl), it
3393 could be sent to the SMTP client, causing chaos. The daemon now opens
3394 stdin, stdout, and stderr to /dev/null when it puts itself into the
3397 76. Arrange for output from Perl's "warn" command to be written to Exim's main
3398 log by default. The user can override this with suitable Perl magic.
3400 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
3401 the log message when discard triggers, was not working for the DATA ACL or
3402 for the non-SMTP ACL.
3404 78. Error message wording change in sieve.c.
3406 79. If smtp_accept_max_per_host was set, the number of connections could be
3407 restricted to fewer than expected, because the daemon was trying to set up
3408 a new connection before checking whether the processes handling previous
3409 connections had finished. The check for completed processes is now done
3410 earlier. On busy systems, this bug wouldn't be noticed because something
3411 else would have woken the daemon, and it would have reaped the completed
3414 80. If a message was submitted locally by a user whose login name contained one
3415 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
3416 It caused a spool format error. I have fixed the spool reading code. A
3417 related problem was that the "from" clause in the Received: line became
3418 illegal because of the space(s). It is now covered by ${quote_local_part.
3420 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
3423 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
3425 83. Patch from Sieve maintainer to fix unterminated string problem in
3426 "vacation" handling.
3428 84. Some minor changes to the Linux configuration files to help with other
3429 OS variants using glibc.
3431 85. One more patch for Sieve to update vacation handling to latest spec.
3434 ----------------------------------------------------
3435 See the note above about the 4.44 and 4.50 releases.
3436 ----------------------------------------------------
3442 1. Change 4.43/35 introduced a bug that caused file counts to be
3443 incorrectly computed when quota_filecount was set in an appendfile
3446 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3447 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3450 3. Give more explanation in the error message when the command for a transport
3451 filter fails to execute.
3453 4. There are several places where Exim runs a non-Exim command in a
3454 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3455 was being done only for the command run by the queryprogram router. It is
3456 now done for all such subprocesses. The other cases are: ${run, transport
3457 filters, and the commands run by the lmtp and pipe transports.
3459 5. Some older OS have a limit of 256 on the maximum number of file
3460 descriptors. Exim was using setrlimit() to set 1000 as a large value
3461 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3462 systems. I've change it so that if it can't get 1000, it tries for 256.
3464 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3465 was an oversight, and furthermore, ever since the addition of extra
3466 controls (e.g. 4.43/32), the checks on when to allow different forms of
3467 "control" were broken. There should now be diagnostics for all cases when a
3468 control that does not make sense is encountered.
3470 7. $recipients is now available in the predata ACL (oversight).
3472 8. Tidy the search cache before the fork to do a delivery from a message
3473 received from the command line. Otherwise the child will trigger a lookup
3474 failure and thereby defer the delivery if it tries to use (for example) a
3475 cached ldap connection that the parent has called unbind on.
3477 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3478 of $address_data from the recipient verification was clobbered by the
3479 sender verification.
3481 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3482 was its contents. (It was OK if the option was not defined at all.)
3484 11. A "Completed" log line is now written for messages that are removed from
3485 the spool by the -Mrm option.
3487 12. $host_address is now set to the target address during the checking of
3488 ignore_target_hosts.
3490 13. When checking ignore_target_hosts for an ipliteral router, no host name was
3491 being passed; this would have caused $sender_host_name to have been used if
3492 matching the list had actually called for a host name (not very likely,
3493 since this list is usually IP addresses). A host name is now passed as
3496 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3497 code that specifies a non-restarting handler (typically sigaction() in
3498 modern systems) in an attempt to fix a rare and obscure crash bug.
3500 15. Narrowed the window for a race in the daemon that could cause it to ignore
3501 SIGCHLD signals. This is not a major problem, because they are used only to
3502 wake it up if nothing else does.
3504 16. A malformed maildirsize file could cause Exim to calculate negative values
3505 for the mailbox size or file count. Odd effects could occur as a result.
3506 The maildirsize information is now recalculated if the size or filecount
3509 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3510 support for a long time. Removed HAVE_SYS_VFS_H.
3512 18. Updated exipick to current release from John Jetmore.
3514 19. Allow an empty sender to be matched against a lookup in an address list.
3515 Previously the only cases considered were a regular expression, or an
3518 20. Exim went into a mad DNS lookup loop when doing a callout where the
3519 host was specified on the transport, if the DNS lookup yielded more than
3522 21. The RFC2047 encoding function was originally intended for short strings
3523 such as real names; it was not keeping to the 75-character limit for
3524 encoded words that the RFC imposes. It now respects the limit, and
3525 generates multiple encoded words if necessary. To be on the safe side, I
3526 have increased the buffer size for the ${rfc2047: expansion operator from
3529 22. Failure to deliver a bounce message always caused it to be frozen, even if
3530 there was an errors_to setting on the router. The errors_to setting is now
3533 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3534 canonical form (fully expanded) before being placed in
3535 $sender_host_address.
3537 24. Updated eximstats to version 1.33
3539 25. Include certificate and key file names in error message when GnuTLS fails
3540 to set them up, because the GnuTLS error message doesn't include the name
3541 of the failing file when there is a problem reading it.
3543 26. Expand error message when OpenSSL has problems setting up cert/key files.
3546 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
3547 (this can affect the format of dates).
3549 28. exim_tidydb, when checking for the continued existence of a message for
3550 which it has found a message-specific retry record, was not finding
3551 messages that were in split spool directories. Consequently, it was
3552 deleting retry records that should have stayed in existence.
3554 29. eximstats updated to version 1.35
3555 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
3556 1.35 - bugfix such that pie charts by volume are generated correctly
3558 30. The SPA authentication driver was not abandoning authentication and moving
3559 on to the next authenticator when an expansion was forced to fail,
3560 contradicting the general specification for all authenticators. Instead it
3561 was generating a temporary error. It now behaves as specified.
3563 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
3564 (the order specifies the preference for clients). The order is now AES256,
3565 AES128, 3DES, ARCFOUR128.
3567 31. Small patch to Sieve code - explicitly set From: when generating an
3570 32. Exim crashed if a remote delivery caused a very long error message to be
3571 recorded - for instance if somebody sent an entire SpamAssassin report back
3572 as a large number of 550 error lines. This bug was coincidentally fixed by
3573 increasing the size of one of Exim's internal buffers (big_buffer) that
3574 happened as part of the Exiscan merge. However, to be on the safe side, I
3575 have made the code more robust (and fixed the comments that describe what
3578 33. Some experimental protocols are using DNS PTR records for new purposes. The
3579 keys for these records are domain names, not reversed IP addresses. The
3580 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3581 leaves it alone. Component reversal etc. now happens only for IP addresses.
3584 34. The host_aton() function is supposed to be passed a string that is known
3585 to be a valid IP address. However, in the case of IPv6 addresses, it was
3586 not checking this. This is a hostage to fortune. Exim now panics and dies
3587 if the condition is not met. A case was found where this could be provoked
3588 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3589 components; fortuitously, this particular loophole had already been fixed
3590 by change 4.50/55 or 4.44/33 above.
3592 If there are any other similar loopholes, the new check in host_aton()
3593 itself should stop them being exploited. The report I received stated that
3594 data on the command line could provoke the exploit when Exim was running as
3595 exim, but did not say which command line option was involved. All I could
3596 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3597 running as the user.
3600 35. There was a buffer overflow vulnerability in the SPA authentication code
3601 (which came originally from the Samba project). I have added a test to the
3602 spa_base64_to_bits() function which I hope fixes it.
3605 36. The daemon start-up calls getloadavg() while still root for those OS that
3606 need the first call to be done as root, but it missed one case: when
3607 deliver_queue_load_max is set with deliver_drop_privilege. This is
3608 necessary for the benefit of the queue runner, because there is no re-exec
3609 when deliver_drop_privilege is set.
3611 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3612 was in use, was not putting the data itself into the right store pool;
3613 consequently, it could be overwritten for a subsequent message in the same
3614 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3617 38. Sometimes the final signoff response after QUIT could fail to get
3618 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3619 < 0 before doing a fflush(). This bug looks as though it goes back to the
3620 introduction of TLS in release 3.20, but "sometimes" must have been rare
3621 because the tests only now provoked it.
3627 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
3628 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
3629 Now it returns an integer. A number of calls were still expecting a T/F
3630 return. Fortuitously, in all cases, the tests worked in OK situations,
3631 which is the norm. However, things would have gone wrong on any write
3632 failures on the smtp file descriptor. This function is used when sending
3633 messages over SMTP and also when doing verify callouts.
3635 2. When Exim is called to do synchronous delivery of a locally submitted
3636 message (the -odf or -odi options), it no longer closes stderr before doing
3639 3. Implemented the mua_wrapper option.
3641 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
3643 5. Implemented the functions header_remove(), header_testname(),
3644 header_add_at_position(), and receive_remove_recipient(), and exported them
3647 6. If an ACL "warn" statement specified the addition of headers, Exim already
3648 inserted X-ACL-Warn: at the start if there was no header name. However, it
3649 was not making this test for the second and subsequent header lines if
3650 there were newlines in the string. This meant that an invalid header could
3651 be inserted if Exim was badly configured.
3653 7. Allow an ACL "warn" statement to add header lines at the start or after all
3654 the Received: headers, as well as at the end.
3656 8. Added the rcpt_4xx retry error code.
3658 9. Added postmaster_mailfrom=xxx to callout verification option.
3660 10. Added mailfrom=xxxx to the callout verification option, for verify=
3663 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
3664 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
3666 12. Inserted some casts to stop certain compilers warning when using pointer
3667 differences as field lengths or precisions in printf-type calls (mostly
3668 affecting debugging statements).
3670 13. Added optional readline() support for -be (dynamically loaded).
3672 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
3673 same clock tick as a message's arrival, so that its received time was the
3674 same as the "first fail" time on the retry record, and that message
3675 remained on the queue past the ultimate address timeout, every queue runner
3676 would try a delivery (because it was past the ultimate address timeout) but
3677 after another failure, the ultimate address timeout, which should have then
3678 bounced the address, did not kick in. This was a "< instead of <=" error;
3679 in most cases the first failure would have been in the next clock tick
3680 after the received time, and all would be well.
3682 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
3683 being recognized when the domain list was tested by the match_domain
3684 condition in an expansion string.
3686 16. Added the ${str2b64: operator.
3688 17. Exim was always calling setrlimit() to set a large limit for the number of
3689 processes, without checking whether the existing limit was already
3690 adequate. (It did check for the limit on file descriptors.) Furthermore,
3691 errors from getrlimit() and setrlimit() were being ignored. Now they are
3692 logged to the main and panic logs, but Exim does carry on, to try to do its
3693 job under whatever limits there are.
3695 18. Imported PCRE 5.0.
3697 19. Trivial typo in log message " temporarily refused connection" (the leading
3700 20. If the log selector return_path_on_delivery was set and an address was
3701 redirected to /dev/null, the delivery process crashed because it assumed
3702 that a return path would always be set for a "successful" delivery. In this
3703 case, the whole delivery is bypassed as an optimization, and therefore no
3706 21. Internal re-arrangement: the function for sending a challenge and reading
3707 a response while authentication was assuming a zero-terminated challenge
3708 string. It's now changed to take a pointer and a length, to allow for
3709 binary data in such strings.
3711 22. Added the cyrus_sasl authenticator (code supplied by MBM).
3713 23. Exim was not respecting finduser_retries when seeking the login of the
3714 uid under which it was called; it was always trying 10 times. (The default
3715 setting of finduser_retries is zero.) Also, it was sleeping after the final
3716 failure, which is pointless.
3718 24. Implemented tls_on_connect_ports.
3720 25. Implemented acl_smtp_predata.
3722 26. If the domain in control=submission is set empty, Exim assumes that the
3723 authenticated id is a complete email address when it generates From: or
3724 Sender: header lines.
3726 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
3727 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
3728 chown and chgrp in /bin and hostname in /usr/bin.
3730 28. Exim was keeping the "process log" file open after each use, just as it
3731 does for the main log. This opens the possibility of it remaining open for
3732 long periods when the USR1 signal hits a daemon. Occasional processlog
3733 errors were reported, that could have been caused by this. Anyway, it seems
3734 much more sensible not to leave this file open at all, so that is what now
3737 29. The long-running daemon process does not normally write to the log once it
3738 has entered its main loop, and it closes the log before doing so. This is
3739 so that log files can straightforwardly be renamed and moved. However,
3740 there are a couple of unusual error situations where the daemon does write
3741 log entries, and I had neglected to close the log afterwards.
3743 30. The text of an SMTP error response that was received during a remote
3744 delivery was being truncated at 512 bytes. This is too short for some of
3745 the long messages that one sometimes sees. I've increased the limit to
3748 31. It is now possible to make retry rules that apply only when a message has a
3749 specific sender, in particular, an empty sender.
3751 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
3752 it possible to be selective about when SMTP synchronization is enforced.
3754 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
3756 32. Implemented hosts_connection_nolog.
3758 33. Added an ACL for QUIT.
3760 34. Setting "delay_warning=" to disable warnings was not working; it gave a
3763 35. Added mailbox_size and mailbox_filecount to appendfile.
3765 36. Added control = no_multiline_responses to ACLs.
3767 37. There was a bug in the logic of the code that waits for the clock to tick
3768 in the case where the clock went backwards by a substantial amount such
3769 that the microsecond fraction of "now" was more than the microsecond
3770 fraction of "then" (but the whole seconds number was less).
3772 38. Added support for the libradius Radius client library this is found on
3773 FreeBSD (previously only the radiusclient library was supported).
3779 1. When certain lookups returned multiple values in the form name=value, the
3780 quoting of the values was not always being done properly. Specifically:
3781 (a) If the value started with a double quote, but contained no whitespace,
3783 (b) If the value contained whitespace other than a space character (i.e.
3784 tabs or newlines or carriage returns) it was not quoted.
3785 This fix has been applied to the mysql and pgsql lookups by writing a
3786 separate quoting function and calling it from the lookup code. The fix
3787 should probably also be applied to nisplus, ibase and oracle lookups, but
3788 since I cannot test any of those, I have not disturbed their existing code.
3790 2. A hit in the callout cache for a specific address caused a log line with no
3791 reason for rejecting RCPT. Now it says "Previous (cached) callout
3792 verification failure".
3794 3. There was an off-by-one bug in the queryprogram router. An over-long
3795 return line was truncated at 256 instead of 255 characters, thereby
3796 overflowing its buffer with the terminating zero. As well as fixing this, I
3797 have increased the buffer size to 1024 (and made a note to document this).
3799 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
3800 when Exim is waiting for an SMTP response from a remote server, Exim
3801 restarts its select() call on the socket, thereby resetting its timeout.
3802 This is not a problem when such interrupts are rare. Somebody set up a cron
3803 job to run exiwhat every 2 minutes, which is less than the normal select()
3804 timeout (5 or 10 minutes). This meant that the select() timeout never
3805 kicked in because it was always reset. I have fixed this by comparing the
3806 time when an interrupt arrives with the time at the start of the first call
3807 to select(). If more time than the timeout has elapsed, the interrupt is
3808 treated as a timeout.
3810 5. Some internal re-factoring in preparation for the addition of Sieve
3811 extensions (by MH). In particular, the "personal" test is moved to a
3812 separate function, and given an option for scanning Cc: and Bcc: (which is
3813 not set for Exim filters).
3815 6. When Exim created an email address using the login of the caller as the
3816 local part (e.g. when creating a From: or Sender: header line), it was not
3817 quoting the local part when it contained special characters such as @.
3819 7. Installed new OpenBSD configuration files.
3821 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3822 try to make them clearer.
3824 9. Callout options, other than the timeout value, were being ignored when
3825 verifying sender addresses in header lines. For example, when using
3827 verify = header_sender/callout=no_cache
3829 the cache was (incorrectly) being used.
3831 10. Added a missing instance of ${EXE} to the exim_install script; this affects
3832 only the Cygwin environment.
3834 11. When return_path_on_delivery was set as a log selector, if different remote
3835 addresses in the same message used different return paths and parallel
3836 remote delivery occurred, the wrong values would sometimes be logged.
3837 (Whenever a remote delivery process finished, the return path value from
3838 the most recently started remote delivery process was logged.)
3840 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
3841 lines when AUTH and/or TLS are in use. This is the "received protocol"
3842 field. Exim used to use "asmtp" for authenticated SMTP, without any
3843 indication (in the protocol name) for TLS use. Now it follows the RFC and
3844 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3845 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3846 names appear in log lines as well as in Received: header lines.
3848 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
3849 extensions, and comparison tests, and to fix some bugs.
3851 14. Changes to the "personal" filter test:
3853 (1) The test was buggy in that it was just doing the equivalent of
3854 "contains" tests on header lines. For example, if a user's address was
3855 anne@some.where, the "personal" test would incorrectly be true for
3857 To: susanne@some.where
3859 This test is now done by extracting each address from the header in turn,
3860 and checking the entire address. Other tests that are part of "personal"
3861 are now done using regular expressions (for example, to check local parts
3862 of addresses in From: header lines).
3864 (2) The list of non-personal local parts in From: addresses has been
3865 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3866 taken from the Sieve specification recommendations.
3868 (3) If the message contains any header line starting with "List-" it is
3869 treated as non-personal.
3871 (4) The test for "circular" in the Subject: header line has been removed
3872 because it now seems ill-conceived.
3874 15. Minor typos in src/EDITME comments corrected.
3876 16. Installed latest exipick from John Jetmore.
3878 17. If headers_add on a router specified a text string that was too long for
3879 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3880 of string_sprintf() is now avoided.
3882 18. $message_body_size was not set (it was always zero) when running the DATA
3883 ACL and the local_scan() function.
3885 19. For the "mail" command in an Exim filter, no default was being set for
3886 the once_repeat time, causing a random time value to be used if "once" was
3887 specified. (If the value happened to be <= 0, no repeat happened.) The
3888 default is now 0s, meaning "never repeat". The "vacation" command was OK
3889 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3890 (I found it when inspecting the code).
3892 20. There is now an overall timeout for performing a callout verification. It
3893 defaults to 4 times the callout timeout, which applies to individual SMTP
3894 commands during the callout. The overall timeout applies when there is more
3895 than one host that can be tried. The timeout is checked before trying the
3896 next host. This prevents very long delays if there are a large number of
3897 hosts and all are timing out (e.g. when the network connections are timing
3898 out). The value of the overall timeout can be changed by specifying an
3899 additional sub-option for "callout", called "maxwait". For example:
3901 verify = sender/callout=5s,maxwait=20s
3903 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3904 to the end before writing, but this should make it even safer).
3906 22. Exim was forgetting that it had advertised PIPELINING for the second and
3907 subsequent messages on an SMTP connection. It was also not resetting its
3908 memory on STARTTLS and an internal HELO.
3910 23. When Exim logs an SMTP synchronization error within a session, it now
3911 records whether PIPELINING has been advertised or not.
3913 24. Added 3 instances of "(long int)" casts to time_t variables that were being
3914 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3915 rather than long int.
3917 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3919 26. Added the never_mail option to autoreply.
3925 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3926 crash if the getsockname() call failed; this can happen if a connection is
3927 closed very soon after it is established. The problem was simply in the
3928 order in which certain operations were done, causing Exim to try to write
3929 to the SMTP stream before it had set up the file descriptor. The bug has
3930 been fixed by making things happen in the correct order.
3936 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3937 before the connection was closed, thus losing the rejection response.
3939 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3940 some early Solaris releases, but causes trouble in current releases where
3941 socklen_t is defined.
3943 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3946 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3949 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3950 that releasing the top of it at the end releases what was used for sub-
3951 expansions (unless the block got too big). However, discard this block if
3952 the first thing is a variable or header, so that we can use its block when
3953 it is dynamic (useful for very large $message_headers, for example).
3955 6. Lookups now cache *every* query, not just the most recent. A new, separate
3956 store pool is used for this. It can be recovered when all lookup caches are
3957 flushed. Lookups now release memory at the end of their result strings.
3958 This has involved some general refactoring of the lookup sources.
3960 7. Some code has been added to the store_xxx() functions to reduce the amount
3961 of flapping under certain conditions.
3963 8. log_incoming_interface used to affect only the <= reception log lines. Now
3964 it causes the local interface and port to be added to several more SMTP log
3965 lines, for example "SMTP connection from", and rejection lines.
3967 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3969 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3971 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3972 could be overwritten at the end of the current message (or the start of a
3973 new message if it was set in a HELO ACL). The value is now preserved for
3974 the duration of the SMTP connection.
3976 12. If a transport had a headers_rewrite setting, and a matching header line
3977 contained an unqualified address, that address was qualified, even if it
3978 did not match any rewriting rules. The underlying bug was that the values
3979 of the flags that permit the existence of unqualified sender and recipient
3980 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3981 non-local messages, and by -bnq for local messages) were not being
3982 preserved with the message after it was received.
3984 13. When Exim was logging an SMTP synchronization error, it could sometimes log
3985 "next input=" as part of the text comprising the host identity instead of
3986 the correct text. The code was using the same buffer for two different
3987 strings. However, depending on which order the printing function evaluated
3988 its arguments, the bug did not always show up. Under Linux, for example, my
3989 test suite worked just fine.
3991 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3992 doesn't work with some older versions of Perl. It has been changed to "my",
3993 which in any case is probably the better facility to use.
3995 15. A really picky compiler found some instances of statements for creating
3996 error messages that either had too many or two few arguments for the format
3999 16. The size of the buffer for calls to the DNS resolver has been increased
4000 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4001 for addresses that have a lot of PTR records. This alleviates a problem; it
4002 does not fully solve it.
4004 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4005 buffer now truncates the list and logs the incident, which is the same
4006 action as happens when Exim is looking up a host name and its aliases.
4007 Previously in this situation something unpredictable would happen;
4008 sometimes it was "internal error: store_reset failed".
4010 18. If a server dropped the connection unexpectedly when an Exim client was
4011 using GnuTLS and trying to read a response, the client delivery process
4012 crashed while trying to generate an error log message.
4014 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4015 string, for example:
4017 warn message = H1: something\nH2: something
4019 the text was added as a single header line from Exim's point of view
4020 though it ended up OK in the delivered message. However, searching for the
4021 second and subsequent header lines using $h_h2: did not work. This has been
4022 fixed. Similarly, if a system filter added multiple headers in this way,
4023 the routers could not see them.
4025 20. Expanded the error message when iplsearch is called with an invalid key to
4026 suggest using net-iplsearch in a host list.
4028 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4029 ACLs are no longer actually imposed (and a message to that effect is
4032 22. If a "gecos" field in a passwd entry contained escaped characters, in
4033 particular, if it contained a \" sequence, Exim got it wrong when building
4034 a From: or a Sender: header from that name. A second bug also caused
4035 incorrect handling when an unquoted " was present following a character
4036 that needed quoting.
4038 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4039 was not being matched caselessly.
4041 24. Arranged for all hyphens in the exim.8 source to be escaped with
4044 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4045 properly. Recipient callout cache records were still being keyed to include
4046 the sender, even when use_sender was set false. This led to far more
4047 callouts that were necessary. The sender is no longer included in the key
4048 when use_sender is false.
4050 26. Added "control = submission" modifier to ACLs.
4052 27. Added the ${base62d: operator to decode base 62 numbers.
4054 28. dnsdb lookups can now access SRV records.
4056 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4057 the configuration file.
4059 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4060 (-v) mode. This makes the output for a verbose queue run more intelligible.
4062 31. Added a use_postmaster feature to recipient callouts.
4064 32. Added the $body_zerocount variable, containing the number of binary zero
4065 bytes in the message body.
4067 33. The time of last modification of the "new" subdirectory is now used as the
4068 "mailbox time last read" when there is a quota error for a maildir
4071 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4073 35. Added +ignore_unknown as a special item in host lists.
4075 36. Code for decoding IPv6 addresses in host lists is now included, even if
4076 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4077 address was recognized as an IP address, but was then not correctly decoded
4078 into binary, causing unexpected and incorrect effects when compared with
4085 1. Very minor rewording of debugging text in manualroute to say "list of
4086 hosts" instead of "hostlist".
4088 2. If verify=header_syntax was set, and a header line with an unqualified
4089 address (no domain) and a large number of spaces between the end of the
4090 name and the colon was received, the reception process suffered a buffer
4091 overflow, and (when I tested it) crashed. This was caused by some obsolete
4092 code that should have been removed. The fix is to remove it!
4094 3. When running in the test harness, delay a bit after writing a bounce
4095 message to get a bit more predictability in the log output.
4097 4. Added a call to search_tidyup() just before forking a reception process. In
4098 theory, someone could use a lookup in the expansion of smtp_accept_max_
4099 per_host which, without the tidyup, could leave open a database connection.
4101 5. Added the variables $recipient_data and $sender_data which get set from a
4102 lookup success in an ACL "recipients" or "senders" condition, or a router
4103 "senders" option, similar to $domain_data and $local_part_data.
4105 6. Moved the writing of debug_print from before to after the "senders" test
4108 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4109 problems for message scanning, either using a data ACL, or using
4110 local_scan() because the Received: header was not generated till after they
4111 were called (in order to set the time as the time of reception completion).
4112 I have revised the way this works. The header is now generated after the
4113 body is received, but before the ACL or local_scan() are called. After they
4114 are run, the timestamp in the header is updated.
4120 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4121 before starting a queue runner without re-exec. This happened only when
4122 deliver_drop_privilege was set or when the Exim user was set to root. The
4123 effect of the bug was that timeouts during subsequent deliveries caused
4124 crashes instead of being properly handled. The handler is now left at its
4125 default (and expected) setting.
4127 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4128 message, again when deliver_drop_privilege is set or Exim is run as root.
4129 The bug described in (1) was not present in this case, but the tidying up
4130 of the other signals was missing. I have made the two cases consistent.
4132 3. The ignore_target_hosts setting on a manualroute router was being ignored
4133 for hosts that were looked up using the /MX notation.
4135 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4138 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4139 operated on the sender address. After changing the $sender_address to <>
4140 for the sender address verify, Exim was re-instated it as the original
4141 (before rewriting) address, but remembering that it had rewritten it, so it
4142 wasn't rewriting it again. This bug also had the effect of breaking the
4143 sender address verification caching when the sender address was rewritten.
4145 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4146 This has been changed so that if the ip literal address matches
4147 ignore_target_hosts, the router declines.
4149 7. Added expansion conditions match_domain, match_address, and match_local_
4150 part (NOT match_host).
4152 8. The placeholder for the Received: header didn't have a length field set.
4154 9. Added code to Exim itself and to exim_lock to test for a specific race
4155 condition that could lead to file corruption when using MBX delivery. The
4156 issue is with the lockfile that is created in /tmp. If this file is removed
4157 after a process has opened it but before that process has acquired a lock,
4158 there is the potential for a second process to recreate the file and also
4159 acquire a lock. This could lead to two Exim processes writing to the file
4160 at the same time. The added code performs the same test as UW imapd; it
4161 checks after acquiring the lock that its file descriptor still refers to
4162 the same named file.
4164 10. The buffer for building added header lines was of fixed size, 8192 bytes.
4165 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
4168 11. Added the smtp_active_hostname option. If used, this will typically be made
4169 to depend on the incoming interface address. Because $interface_address is
4170 not set up until the daemon has forked a reception process, error responses
4171 that can happen earlier (such as "too many connections") no longer contain
4174 12. If an expansion in a condition on a "warn" statement fails because a lookup
4175 defers, the "warn" statement is abandoned, and the next ACL statement is
4176 processed. Previously this caused the whole ACL to be aborted.
4178 13. Added the iplsearch lookup type.
4180 14. Added ident_timeout as a log selector.
4182 15. Added tls_certificate_verified as a log selector.
4184 16. Added a global option tls_require_ciphers (compare the smtp transport
4185 option of the same name). This controls incoming TLS connections.
4187 17. I finally figured out how to make tls_require_ciphers do a similar thing
4188 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
4189 before starting the TLS session.
4191 18. Tabs are now shown as \t in -bP output.
4193 19. If the log selector return_path_on_delivery was set, Exim crashed when
4194 bouncing a message because it had too many Received: header lines.
4196 20. If two routers both had headers_remove settings, and the first one included
4197 a superfluous trailing colon, the final name in the first list and the
4198 first name in the second list were incorrectly joined into one item (with a
4199 colon in the middle).
4205 1. Added -C and -D options to the exinext utility, mainly to make it easier
4206 to include in the automated testing, but these could be helpful when
4207 multiple configurations are in use.
4209 2. The exinext utility was not formatting the output nicely when there was
4210 an alternate port involved in the retry record key, nor when there was a
4211 message id as well (for retries that were specific to a specific message
4212 and a specific host). It was also confused by IPv6 addresses, because of
4213 the additional colons they contain. I have fixed the IPv4 problem, and
4214 patched it up to do a reasonable job for IPv6.
4216 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
4217 delivery, the log line now contains "pipelined" if PIPELINING was used.
4219 4. An SMTP transport process used to panic and die if the bind() call to set
4220 an explicit outgoing interface failed. This has been changed; it is now
4221 treated in the same way as a connect() failure.
4223 5. A reference to $sender_host_name in the part of a conditional expansion
4224 that was being skipped was still causing a DNS lookup. This no longer
4227 6. The def: expansion condition was not recognizing references to header lines
4228 that used bh_ and bheader_.
4230 7. Added the _cache feature to named lists.
4232 8. The code for checking quota_filecount in the appendfile transport was
4233 allowing one more file than it should have been.
4235 9. For compatibility with Sendmail, the command line option
4243 and sets the incoming protocol and host name (for trusted callers). The
4244 host name and its colon can be omitted when only the protocol is to be set.
4245 Note the Exim already has two private options, -pd and -ps, that refer to
4246 embedded Perl. It is therefore impossible to set a protocol value of "d" or
4247 "s", but I don't think that's a major issue.
4249 10. A number of refactoring changes to the code, none of which should affect
4252 (a) The number of logging options was getting close to filling up the
4253 32-bit word that was used as a bit map. I have split them into two classes:
4254 those that are passed in the argument to log_write(), and those that are
4255 only ever tested independently outside of that function. These are now in
4256 separate 32-bit words, so there is plenty of room for expansion again.
4257 There is no change in the user interface or the logging behaviour.
4259 (b) When building, for example, log lines, the code previously used a
4260 macro that called string_cat() twice, in order to add two strings. This is
4261 not really sufficiently general. Furthermore, there was one instance where
4262 it was actually wrong because one of the argument was used twice, and in
4263 one call a function was used. (As it happened, calling the function twice
4264 did not affect the overall behaviour.) The macro has been replaced by a
4265 function that can join an arbitrary number of extra strings onto a growing
4268 (c) The code for expansion conditions now uses a table and a binary chop
4269 instead of a serial search (which was left over from when there were very
4270 few conditions). Also, it now recognizes conditions like "pam" even when
4271 the relevant support is not compiled in: a suitably worded error message is
4272 given if an attempt is made to use such a condition.
4274 11. Added ${time_interval:xxxxx}.
4276 12. A bug was causing one of the ddress fields not to be passed back correctly
4277 from remote delivery subprocesses. The field in question was not being
4278 subsequently used, so this caused to problems in practice.
4280 13. Added new log selectors queue_time and deliver_time.
4282 14. Might have fixed a bug in maildirsizefile handling that threw up
4283 "unexpected character" debug warnings, and recalculated the data
4284 unnecessarily. In any case, I expanded the warning message to give more
4287 15. Added the message "Restricted characters in address" to the statements in
4288 the default ACL that block characters like @ and % in local parts.
4290 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
4291 Three changes have been made:
4293 (a) There was a serious bug; a negative response to MAIL caused the whole
4294 recipient domain to be cached as invalid, thereby blocking all messages
4295 to all local parts at the same domain, from all senders. This bug has
4296 been fixed. The domain is no longer cached after a negative response to
4297 MAIL if the sender used is not empty.
4299 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
4302 (c) A new callout option, "use_sender" has been added for people who want
4303 the modified behaviour.
4309 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
4312 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
4313 indeed breaks things for older releases.
4315 3. Added additional logging to the case where there is a problem reading data
4316 from a filter that is running in a subprocess using a pipe, in order to
4317 try to track down a specific problem.
4319 4. Testing facility fudge: when running in the test harness and attempting
4320 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
4321 getting "No route to host". Convert this to a timeout.
4323 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
4326 6. Some OS don't have socklen_t but use size_t instead. This affects the
4327 fifth argument of getsockopt() amongst other things. This is now
4328 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
4329 can be set for individual OS. I have set it for SunOS5, OSF1, and
4330 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
4331 some earlier ones do not.
4333 7. Change 4.30/15 was not doing the test caselessly.
4335 8. The standard form for an IPv6 address literal was being rejected by address
4336 parsing in, for example, MAIL and RCPT commands. An example of this kind of
4337 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4338 this, as well as the form without the "IPv6" on the front (but only when
4339 address literals are enabled, of course).
4341 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
4343 10. Exim crashed if a message with an empty sender address specified by -f
4344 encountered a router with an errors_to setting. This could be provoked only
4345 by a command such as
4349 where an empty string was supplied; "<>" did not hit this bug.
4351 11. Installed PCRE release 4.5.
4353 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
4354 remained set. It is now erased.
4356 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
4357 times from message ids (which are base 36 rather than the normal 62).
4359 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
4360 were being counted as actual protocol errors, and logged if the log
4361 selector +smtp_protocol_error was set. One cannot be perfect in this test,
4362 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
4363 and DATA following a set of rejected RCPTs do not count as protocol errors.
4364 In other words, Exim assumes they were pipelined, though this may not
4365 actually be the case. Of course, in all cases the client gets an
4366 appropriate error code.
4368 15. If a lookup fails in an ACL condition, a message about the failure may
4369 be available; it is used if testing the ACL cannot continue, because most
4370 such messages specify what the cause of the deferral is. However, some
4371 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
4372 that caused an old message to be retained and used if a later statement
4373 caused a defer, replacing the real cause of the deferral.
4375 16. If an IP address had so many PTR records that the DNS lookup buffer
4376 was not large enough to hold them, Exim could crash while trying to process
4377 the truncated data. It now detects and logs this case.
4379 17. Further to 4.21/58, another change has been made: if (and only if) the
4380 first line of a message (the first header line) ends with CRLF, a bare LF
4381 in a subsequent header line has a space inserted after it, so as not to
4382 terminate the header.
4384 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
4385 unnecessarily, used atoi() instead of strtol(), and didn't check the
4386 termination when getting file sizes from file names by regex.
4388 19. Completely re-implemented the support for maildirsize files, in the light
4389 of a number of problems with the previous contributed implementation
4390 (4.30/29). In particular:
4392 . If the quota is zero, the maildirsize file is maintained, but no quota is
4395 . If the maildir directory does not exist, it is created before any attempt
4396 to write a maildirsize file.
4398 . The quota value in the file is just a cache; if the quota is changed in
4399 the transport, the new value overrides.
4401 . A regular expression is available for excluding directories from the
4404 20. The autoreply transport checks the characters in options that define the
4405 message's headers; it allows continued headers, but it was checking with
4406 isspace() after an embedded newline instead of explicitly looking for a
4409 21. If all the "regular" hosts to which an address was routed had passed their
4410 expiry times, and had not reached their retry times, the address was
4411 bounced, even if fallback hosts were defined. Now Exim should go on to try
4414 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
4415 equivalent code in the SMTP transport. Some hosts send humungous responses
4416 to HELO/EHLO, more than 1024 it seems.
4418 23. Refactoring: code in filter.c used (void *) for "any old type" but this
4419 gives compiler warnings in some environments. I've now done it "properly",
4422 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
4423 (because of problems with the built-in one) was declared to return uschar *
4424 instead of char *, causing compiler failure.
4426 25. Fixed a file descriptor leak when processing alias/forward files.
4428 26. Fixed a minor format string issue in dbfn.c.
4430 27. Typo in exim.c: ("dmbnz" for "dbmnz").
4432 28. If a filter file refered to $h_xxx or $message_headers, and the headers
4433 contained RFC 2047 "words", Exim's memory could, under certain conditions,
4436 29. When a sender address is verified, it is cached, to save repeating the test
4437 when there is more than one recipient in a message. However, when the
4438 verification involves a callout, it is possible for different callout
4439 options to be set for different recipients. It is too complicated to keep
4440 track of this in the cache, so now Exim always runs a verification when a
4441 callout is required, relying on the callout cache for the optimization.
4442 The overhead is duplication of the address routing, but this should not be
4445 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
4446 to be verified with callout=postmaster, and the main callout worked but the
4447 postmaster check failed, the verification correctly failed. However, if a
4448 subsequent RCPT command asked for sender verification *without* the
4449 postmaster check, incorrect caching caused this verification also to fail,
4452 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
4453 it was not caching the DNS options (qualify_single, search_parents) that
4454 were used when the lookup failed. A subsequent lookup with different
4455 options therefore always gave the same answer, though there were cases
4456 where it should not have. (Example: a "domains = !$mx_any" option on a
4457 dnslookup router: the "domains" option is always processed without any
4458 widening, but the router might have qualify_single set.) Now Exim uses the
4459 cached value only when the same options are set.
4461 32. Added John Jetmore's "exipick" utility to the distribution.
4463 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
4464 than a timeout (e.g. a certificate is required, and is not provided), an
4465 Exim server now closes the connection immediately. Previously it waited for
4466 the client to close - but if the client is SSL, it seems that they each
4467 wait for each other, leading to a delay before one of them times out.
4469 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
4470 maintained 0.8.x compatibility because I don't think many are using it, and
4471 it is clearly obsolete.
4473 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
4476 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
4477 client certificate was expired. A simple patch fixes this, though I don't
4478 understand the full logic of why the verify callback is called multiple
4481 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
4482 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
4483 which causes problems with some clients (such as the Certicom SSL Plus
4484 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
4485 disables the coutermeasure allowing Eudora to connect."
4487 38. Exim was not checking that a write() to a log file succeeded. This could
4488 lead to Bad Things if a log got too big, in particular if it hit a file
4489 size limit. Exim now panics and dies if it cannot write to a log file, just
4490 as it does if it cannot open a log file.
4492 39. Modified OS/Makefile-Linux so that it now contains
4494 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
4496 The two -D definitions ensure that Exim is compiled with large file
4497 support, which makes it possible to handle log files that are bigger than
4500 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
4501 instance) a domain was checked against a named list that involved a lookup,
4502 causing $domain_data to be set, then another domain was checked against the
4503 same list, then the first domain was re-checked, the value of $domain_data
4504 after the final check could be wrong. In particular, if the second check
4505 failed, it could be set empty. This bug probably also applied to
4508 41. The strip_trailing_dot option was not being applied to the address given
4509 with the -f command-line option.
4511 42. The code for reading a message's header from the spool was incrementing
4512 $received_count, but never initializing it. This meant that the value was
4513 incorrect (doubled) while delivering a message in the same process in which
4514 it was received. In the most common configuration of Exim, this never
4515 happens - a fresh exec is done - but it can happen when
4516 deliver_drop_privilege is set.
4518 43. When Exim logs an SMTP synchronization error - client data sent too soon -
4519 it now includes up to 150 characters of the unexpected data in the log
4522 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
4523 and building data strings. The size of both of these buffers was 10 000
4524 bytes - far larger than anybody would *ever* want, thought I. Needless to
4525 say, somebody hit the limit. I have increased the maximum line length to
4526 20 000 and the maximum data length of concatenated lines to 100 000. I have
4527 also fixed two bugs, because there was no checking on these buffers. Tsk,
4528 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
4529 buffer is too small.
4531 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
4532 lsearch lookups. Now it does.
4534 46. When parsing a route_list item in a manualroute router, a fixed-length
4535 buffer was used for the list of hosts. I made this 1024 bytes long,
4536 thinking that nobody would ever have a list of hosts that long. Wrong.
4537 Somebody had a whole pile of complicated expansion conditions, and the
4538 string was silently truncated, leading to an expansion error. It turns out
4539 that it is easier to change to an unlimited length (owing to other changes
4540 that have happened since this code was originally written) than to build
4541 structure for giving a limitation error. The length of the item that
4542 expands into the list of hosts is now unlimited.
4544 47. The lsearch lookup could not handle data where the length of text line was
4545 more than 4095 characters. Such lines were truncated, leading to shortened
4546 data being returned. It should now handle lines of any length.
4548 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
4549 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
4552 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
4553 replacing strings such as BIN_DIRECTORY in a source file: the replacement
4554 no longer happens in comment lines. A list of replacements is now placed
4555 at the head of all of the source files, except those whose only change is
4556 to replace PERL_COMMAND in the very first #! line.
4558 50. Replaced the slow insertion sort in queue.c, for sorting the list of
4559 messages on the queue, with a bottom-up merge sort, using code contributed
4560 by Michael Haardt. This should make operations like -bp somewhat faster on
4561 large queues. It won't affect queue runners, except when queue_run_in_order
4564 51. Installed eximstats 1.31 in the distribution.
4566 52. Added support for SRV lookups to the dnslookup router.
4568 53. If an ACL referred to $message_body or $message_body_end, the value was not
4569 reset for any messages that followed in the same SMTP session.
4571 54. The store-handling optimization for building very long strings was not
4572 differentiating between the different store pools. I don't think this
4573 actually made any difference in practice, but I've tidied it.
4575 55. While running the routers to verify a sender address, $sender_address
4576 was still set to the sender address. This is wrong, because when routing to
4577 send a bounce to the sender, it would be empty. Therefore, I have changed
4578 it so that, while verifying a sender address, $sender_address is set to <>.
4579 (There is no change to what happens when verifying a recipient address.)
4581 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
4582 target A or AAAA records (if not already returned) without resetting the
4583 qualify_single or search_parents options of the DNS resolver. These are
4584 inappropriate in this case because the targets of MX and SRV records must
4585 be FQDNs. A broken DNS record could cause trouble if it happened to have a
4586 target that, when qualified, matched something in the local domain. These
4587 two options are now turned off when doing these lookups.
4589 57. It seems that at least some releases of Reiserfs (which does not have the
4590 concept of a fixed number of inodes) returns zero and not -1 for the
4591 number of available inodes. This interacted badly with check_spool_inodes,
4592 which assumed that -1 was the "no such thing" setting. What I have done is
4593 to check that the total number of inodes is greater than zero before doing
4594 the test of how many are available.
4596 58. When a "warn" ACL statement has a log_message modifier, the message is
4597 remembered, and not repeated. This is to avoid a lot of repetition when a
4598 message has many recipients that cause the same warning to be written.
4599 Howewer, Exim was preserving the list of already written lines for an
4600 entire SMTP session, which doesn't seem right. The memory is now reset if a
4601 new message is started.
4603 59. The "rewrite" debugging flag was not showing the result of rewriting in the
4604 debugging output unless log_rewrite was also set.
4606 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
4607 of (int)(handle) when we know that handle contains (void *)(-1).
4609 61. The Exim daemon panic-logs an error return when it closes the incoming
4610 connection. However "connection reset by peer" seems to be common, and
4611 isn't really an error worthy of noting specially, so that particular error
4614 62. When Exim is trying to find all the local interfaces, it used to panic and
4615 die if the ioctl to get the interface flags failed. However, it seems that
4616 on at least one OS (Solaris 9) it is possible to have an interface that is
4617 included in the list of interfaces, but for which you get a failure error
4618 for this call. This happens when the interface is not "plumbed" into a
4619 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
4620 failure of the "get flags" call assumes that the interface is down.
4622 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
4623 makes life easier for people who are doing arithmetic on fields extracted
4624 from dates, where you often get leading zeros that should not be
4625 interpreted as octal.
4627 64. Added qualify_domain to the redirect router, to override the global
4630 65. If a pathologically long header line contained very many addresses (the
4631 report of this problem mentioned 10 000) and each of them was rewritten,
4632 Exim could use up a very large amount of memory. (It kept on making new
4633 copies of the header line as it rewrote, and never released the old ones.)
4634 At the expense of a bit more processing, the header rewriting function has
4635 been changed so that it no longer eats memory in this way.
4637 66. The generation of the Received: header has been moved from the time that a
4638 message starts to be received, to the time that it finishes. The timestamp
4639 in the Received: header should now be very close to that of the <= log
4640 line. There are two side-effects of this change:
4642 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
4643 logged header lines no longer include the local Received: line, because
4644 it has not yet been created. The same applies to a copy of the message
4645 that is returned to a non-SMTP sender when a message is rejected.
4647 (b) When a filter file is tested using -bf, no additional Received: header
4648 is added to the test message. After some thought, I decided that this
4651 This change does not affect the value of $received_for. It is still set
4652 after address rewriting, but before local_scan() is called.
4654 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
4656 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
4657 gave an unhelpful panic error message, and a defer error. I have managed to
4658 change this behaviour so that it now rejects any supplied certificate,
4659 which seems right, as the list of acceptable certificates is empty.
4661 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
4662 gave an unhelpful defer error. I have not managed to make this reject any
4663 supplied certificates, but the error message it gives is "no certificate
4664 supplied", which is not helpful.
4666 70. exigrep's output now also includes lines that are not associated with any
4667 message, but which match the given pattern. Implemented by a patch from
4668 Martin Sluka, which also tidied up the Perl a bit.
4670 71. Recipient callout verification, like sender verification, was using <> in
4671 the MAIL FROM command. This isn't really the right thing, since the actual
4672 sender may affect whether the remote host accepts the recipient or not. I
4673 have changed it to use the actual sender in the callout; this means that
4674 the cache record is now keyed on a recipient/sender pair, not just the
4675 recipient address. There doesn't seem to be a real danger of callout loops,
4676 since a callout by the remote host to check the sender would use <>.
4677 [SEE ABOVE: changed after hitting problems.]
4679 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
4680 temporary errors. However, in the case of such a code being given after
4681 the end of a data transmission (i.e. after ".") Exim was failing to write
4682 a retry record for the message. (Yes, there was some broken host that was
4683 actually sending 8xx at this point.)
4685 73. An unknown lookup type in a host list could cause Exim to panic-die when
4686 the list was checked. (An example that provoked this was putting <; in the
4687 middle of a list instead of at the start.) If this happened during a DATA
4688 ACL check, a -D file could be left lying around. This kind of configuration
4689 error no longer causes Exim to die; instead it causes a defer errror. The
4690 incident is still logged to the main and panic logs.
4692 74. Buglet left over from Exim 3 conversion. The message "too many messages
4693 in one connection" was written to the rejectlog but not the mainlog, except
4694 when address rewriting (yes!) was being logged.
4696 75. Added write_rejectlog option.
4698 76. When a system filter was run not as root (that is, when system_filter_user
4699 was set), the values of the $n variables were not being returned to the
4700 main process; thus, they were not subsequently available in the $sn
4703 77. Added +return_path_on_delivery log selector.
4705 78. A connection timeout was being treated differently from recipients deferred
4706 when testing hosts_max_try with a message that was older than the host's
4707 retry timeout. (The host should not be counted, thus allowing all hosts to
4708 be tried at least once before bouncing.) This may have been the cause of an
4709 occasionally reported bug whereby a message would remain on the queue
4710 longer than the retry timeout, but would be bounced if a delivery was
4711 forced. I say "may" because I never totally pinned down the problem;
4712 setting up timeout/retry tests is difficult. See also the next item.
4714 79. The ultimate address timeout was not being applied to errors that involved
4715 a combination of host plus message (for example, a timeout on a MAIL
4716 command). When an address resolved to a number of possible hosts, and they
4717 were not all tried for each delivery (e.g. because of hosts_max_try), a
4718 message could remain on the queue longer than the retry timeout.
4720 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
4723 81. Fixed an obscure SMTP outgoing bug which required at least the following
4724 conditions: (a) there was another message waiting for the same server;
4725 (b) the server returned 5xx to all RCPT commands in the first message so
4726 that the message was not completed; (c) the server dropped the connection
4727 or gave a negative response to the RSET that Exim sends to abort the
4728 transaction. The observed case was a dropped connection after DATA that had
4729 been sent in pipelining mode. That is, the server had advertised PIPELINING
4730 but was not implementing it correctly. The effect of the bug was incorrect
4731 behaviour, such as trying another host, and this could lead to a crash.
4737 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
4738 and daemon.c were passed as pointers to ints; they should have been
4739 pointers to socklen_t variables (which are typically unsigned ints).
4741 2. Some signed/unsigned type warnings in the os.c file for Linux have been
4744 3. Fixed a really odd bug that affected only the testing scheme; patching a
4745 certain fixed string in the binary changed the value of another string that
4746 happened to be identical to the end of the original first string.
4748 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
4749 name", it returns that address as the IP address. On some operating
4750 systems (e.g. Solaris), it also passes back the IP address string as the
4751 "host name". However, on others (e.g. Linux), it passes back an empty
4752 string. Exim wasn't checking for this, and was changing the host name to an
4753 empty string, assuming it had been canonicized.
4755 5. Although rare, it is permitted to have more than one PTR record for a given
4756 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
4757 all the names associated with an address, because they do in Solaris.
4758 However, it seems that they do not in Linux for data that comes from the
4759 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
4760 I found this out when I moved to a new Linux workstation and tried to run
4761 the Exim test suite.
4763 To get round this problem I have changed the code so that it now does its
4764 own call to the DNS to look up PTR records when searching for a host name.
4765 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
4766 addresses that are only in /etc/hosts are still found.
4768 This behaviour is, however, controlled by an option called host_lookup_
4769 order, which defaults to "bydns:byaddr". If people want to use the other
4770 order, or indeed, just use one or the other means of lookup, they can
4771 specify it in this variable.
4773 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
4774 some operating systems, this comes back from gethostbyaddr() as an empty
4775 string, and this is what Exim used to test for. However, it seems that in
4776 other systems, "." is yielded. Exim now tests for this case too.
4778 7. The values of check_spool_space and check_log_space are now held internally
4779 as a number of kilobytes instead of an absolute number of bytes. If a
4780 numbers is specified without 'K' or 'M', it is rounded up to the nearest
4781 kilobyte. This means that much larger values can be stored.
4783 8. Exim monitor: an attempt to get the action menu when not actually pointing
4784 at a message produces an empty menu entitled "No message selected". This
4785 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
4786 no entries in it ("Shell widget menu has zero width and/or height"). So I
4787 have added a single, blank menu entry in this case.
4789 9. Added ${quote_local_part.
4791 10. MIME decoding is now applied to the contents of Subject: header lines when
4794 11. Now that a reference to $sender_host_address automatically causes a reverse
4795 lookup to occur if necessary (4.13/18), there is no need to arrange for a
4796 host lookup before query-style lookups in lists that might use this
4797 variable. This has therefore been abolished, and the "net-" prefix is no
4798 longer necessary for query-style lookups.
4800 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
4801 have been a typo for LFLAGS, so it has been changed.
4803 13. The install script calls Exim with "-C /dev/null" in order to find the
4804 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
4805 to be output. Howeve, since Exim outputs its version number before the
4806 error, it didn't break the script. It just looked ugly. I fixed this by
4807 always allowing "-C /dev/null" if the caller is root.
4809 14. Ignore overlarge ACL variable number when reading spool file - insurance
4810 against a later release with more variables having written the file.
4812 15. The standard form for an IPv6 address literal was being rejected by EHLO.
4813 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4814 this, as well as the form without the "IPv6" on the front.
4816 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
4817 OS/Makefile-Darwin file.
4819 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
4820 only to LDAP libraries that do not have LDAP_OPT_DEREF.
4822 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
4823 variable. However, some OS use ints for inodes. I've added cast to long int
4824 to get rid of the compiler warning.
4826 19. I had forgotten to lock out "/../" in configuration file names when
4827 ALT_CONFIG_PREFIX was set.
4829 20. Routers used for verification do not need to specify transports. However,
4830 if such a router generated a host list, and callout was configured, Exim
4831 crashed, because it could not find a port number from the (non-existent)
4832 transport. It now assumes port 25 in this circumstance.
4834 21. Added the -t option to exigrep.
4836 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
4837 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
4838 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
4839 them is set, LOOKUP_LSEARCH is forced.
4841 23. "exim -bV" now outputs a list of lookups that are included in the binary.
4843 24. Added sender and host information to the "rejected by local_scan()" log
4844 line; previously there was no indication of these.
4846 25. Added .include_if_exists.
4848 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
4849 Linux. It turns out that not all file systems support this. Apparently some
4850 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
4851 do it.) To cope with this, the error EINVAL, which means that sync-ing is
4852 not supported on the file descriptor, is now ignored when Exim is trying to
4853 sync a directory. This applies only to Linux.
4855 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
4857 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
4858 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
4861 29. Added support for maildirsize files from supplied patch (modified a bit).
4863 30. The use of :fail: followed by an empty string could lead Exim to respond to
4864 sender verification failures with (e.g.):
4866 550 Verification failed for <xxx>
4867 550 Sender verify failed
4869 where the first response line was missing the '-' that indicates it is not
4870 the final line of the response.
4872 31. The loop for finding the name of the user that called Exim had a hardwired
4873 limit of 10; it now uses the value of finduser_retries, which is used for
4874 all other user lookups.
4876 32. Added $received_count variable, available in data and not_smtp ACLs, and at
4879 33. Exim was neglecting to zero errno before one call of strtol() when
4880 expanding a string and expecting an integer value. On some systems this
4881 resulted in spurious "integer overflow" errors. Also, it was casting the
4882 result into an int without checking.
4884 34. Testing for a connection timeout using "timeout_connect" in the retry rules
4885 did not work. The code looks as if it has *never* worked, though it appears
4886 to have been documented since at least releast 1.62. I have made it work.
4888 35. The "timeout_DNS" error in retry rules, also documented since at least
4889 1.62, also never worked. As it isn't clear exactly what this means, and
4890 clearly it isn't a major issue, I have abolished the feature by treating it
4891 as "timeout", and writing a warning to the main and panic logs.
4893 36. The display of retry rules for -brt wasn't always showing the error code
4896 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
4897 timeout_connect_A, timeout_connect_MX.
4899 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
4900 to the empty sender.
4902 39. The daemon was not analysing the content of -oX till after it had closed
4903 stderr and disconnected from the controlling terminal. This meant that any
4904 syntax errors were only noted on the panic log, and the return code from
4905 the command was 0. By re-arranging the code a little, I've made the
4906 decoding happen first, so such errors now appear on stderr, and the return
4907 code is 1. However, the actual setting up of the sockets still happens in
4908 the disconnected process, so errors there are still only recorded on the
4911 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
4912 connections (as happens on some IP stacks) was logged at start up time as
4913 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
4914 it from "IPv6 and IPv4", which means that two separate sockets are being
4917 41. The debug output for gethostbyname2() or getipnodebyname() failures now
4918 says whether AF_INET or AF_INET6 was passed as an argument.
4920 42. Exiwhat output was messed up when time zones were included in log
4923 43. Exiwhat now gives more information about the daemon's listening ports,
4924 and whether -tls-on-connect was used.
4926 44. The "port" option of the smtp transport is now expanded.
4928 45. A "message" modifier in a "warn" statement in a non-message ACL was being
4929 silently ignored. Now an error message is written to the main and panic
4932 46. There's a new ACL modifier called "logwrite" which writes to a log file
4933 as soon as it is encountered.
4935 47. Added $local_user_uid and $local_user_gid at routing time.
4937 48. Exim crashed when trying to verify a sender address that was being
4940 49. Exim was recognizing only a space character after ".include". It now also
4941 recognizes a tab character.
4943 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
4944 extracting the relevant information from the specification. The man page no
4945 longer contains scrambled data for the -d option, and I've added a section
4946 at the front about calling Exim under different names.
4948 51. Added "extra_headers" argument to the "mail" command in filter files.
4950 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
4953 53. Installed eximstats 1.29.
4955 54. Added transport_filter_timeout as a generic transport option.
4957 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
4958 Cc: header lines. This was required by RFC 822, but it not required by RFC
4961 56. Exim used to add From:, Date:, and Message-Id: header lines to any
4962 incoming messages that did not have them. Now it does so only if the
4963 message originates locally, that is, if there is no associated remote host
4964 address. When Resent- header lines are present, this applies to the Resent-
4965 lines rather than the non-Resent- lines.
4967 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
4968 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
4970 58. Messages for configuration errors now include the name of the main
4971 configuration file - useful now that there may be more than one file in a
4972 list (.included file names were always shown).
4974 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
4975 for those rare installations that do not start the daemon as root or run it
4976 setuid root. I've cut out the call to initgroups() if the daemon is not
4979 60. The Exim user and group can now be bound into the binary as text strings
4980 that are looked up at the start of Exim's processing.
4982 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
4984 62. Added $mailstore_basename variable.
4986 63. Installed patch to sieve.c from Michael Haardt.
4988 64. When Exim failed to open the panic log after failing to open the main log,
4989 the original message it was trying to log was written to stderr and debug
4990 output, but if they were not available (the usual case in production), it
4991 was lost. Now it is written to syslog before the two lines that record the
4992 failures to open the logs.
4994 65. Users' Exim filters run in subprocesses under the user's uid. It is
4995 possible for a "deliver" command or an alias in a "personal" command to
4996 provoke an address rewrite. If logging of address rewriting is configured,
4997 this fails because the process is not running as root or exim. There may be
4998 a better way of dealing with this, but for the moment (because 4.30 needs
4999 to be released), I have disabled address rewrite logging when running a
5000 filter in a non-root, non-exim process.
5006 1. The buildconfig auxiliary program wasn't quoting the value set for
5007 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5008 not defined. This bug was masked in 4.22 by the effect that was fixed in
5011 2. Some messages that were rejected after a message id was allocated were
5012 shown as "incomplete" by exigrep. It no longer does this for messages that
5013 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5015 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5016 have allow_domain_literals set, the ID did not get logged in the <= line.
5017 Domain literals are now always recognized in Message-ID: header lines.
5019 4. The first argument for a ${extract expansion item is the key name or field
5020 number. Leading and trailing spaces in this item were not being ignored,
5021 causing some misleading effects.
5023 5. When deliver_drop_privilege was set, single queue runner processes started
5024 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5025 same command in the process it spins off) were not dropping privilege.
5027 6. When the daemon running as "exim" started a queue runner, it always
5028 re-executed Exim in the spun-off process. This is a waste of effort when
5029 deliver_drop_privilege is set. The new process now just calls the
5030 queue-runner function directly.
5036 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5039 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5040 ignored. Though the use of -oP was forcing the writing of a pid file, it
5041 was always written to the default place.
5043 3. If the message "no IP address found for host xxxx" is generated during
5044 incoming verification, it is now followed by identification of the incoming
5045 connection (so you can more easily find what provoked it).
5047 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5049 5. Added some features to "harden" Exim a bit more against certain attacks:
5051 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5052 be put in Local/Makefile. This is like the never_users runtime option,
5053 but it cannot be overridden. The default setting is "root".
5055 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5056 prefix string with which any file named in a -C command line option
5059 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5060 is retained for -C and -D only if the caller of Exim is root. Without
5061 it, the exim user may also use -C and -D and retain privilege.
5063 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5064 command line option is disabled.
5066 6. Macro names set by the -D option must start with an upper case letter, just
5067 like macro names defined in the configuration file.
5069 7. Added "dereference=" facility to LDAP.
5071 8. Two instances of the typo "uknown" in the source files are fixed.
5073 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5074 the Configure-Makefile script screwed up while processing it.
5076 10. Incorporated PCRE 4.4.
5078 11. The SMTP synchronization check was not operating right at the start of an
5079 SMTP session. For example, it could not catch a HELO sent before the client
5080 waited for the greeting. There is now a check for outstanding input at the
5081 point when the greeting is written. Because of the duplex, asynchronous
5082 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5083 way, but not yet received, when the check is performed.
5085 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5086 on TCP/IP sockets, because this apparently causes some broken clients to
5089 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5090 unchanged) from the Cygwin maintainer.
5092 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5093 was supported instead of testing for mbx. Effectively a typo.
5095 15. The spa authenticator server code was not checking that the input it
5096 received was valid base64.
5098 16. The debug output line for the "set" modifier in ACLs was not showing the
5099 name of the variable that was being set.
5101 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5103 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5104 lookup on its own. Something else was needed to trigger the lookup. For
5105 example, a match in host_lookup or the need for a host name in a host list.
5106 Now, if $sender_host_name is referenced and the host name has not yet been
5107 looked up, a lookup is performed. If the lookup fails, the variable remains
5108 empty, and $host_lookup_failed is set to "1".
5110 19. Added "eqi" as a case-independent comparison operator.
5112 20. The saslauthd authentication condition could segfault if neither service
5113 nor realm was specified.
5115 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5116 error message that was logged was misleading, and incoming SMTP
5117 connections were dropped. The message is now more accurate, and temporary
5118 errors are given to SMTP connections.
5120 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5121 (except RSET) with a 421 error, until QUIT is received. However, it was
5122 failing to send a response to QUIT.
5124 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5125 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5126 ACL is now run after the helo_try_verify_hosts code.
5128 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5129 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5130 case-independent, so other case variants are also recognized). Apparently
5131 some systems use these upper case variants.
5133 25. If more than two messages were waiting for the same host, and a transport
5134 filter was specified for the transport, Exim sent two messages over the
5135 same TCP/IP connection, and then failed with "socket operation on non-
5136 socket" when it tried to send the third.
5138 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5140 27. The extern definition of crypt16() in expand.c was not being excluded when
5141 the OS had its own crypt16() function.
5143 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5144 as a preferred synonym for return_size_limit, both as an option and as an
5147 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5149 30. Changed the default configuration ACL to relax the local part checking rule
5150 for addresses that are not in any local domains. For these addresses,
5151 slashes and pipe symbols are allowed within local parts, but the sequence
5152 /../ is explicitly forbidden.
5154 31. SPA server authentication was not clearing the challenge buffer before
5157 32. log_message in a "warn" ACL statement was writing to the reject log as
5158 well as to the main log, which contradicts the documentation and doesn't
5159 seem right (because no rejection is happening). So I have stopped it.
5161 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
5162 However, I am unable to do any testing of this.
5164 34. Fixed an infelicity in the appendfile transport. When checking directories
5165 for a mailbox, to see if any needed to be created, it was accidentally
5166 using path names with one or more superfluous leading slashes; tracing
5167 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
5169 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
5170 contents are added to the log line that is written for every discarded
5171 recipient. (Previously a log_message setting was ignored.)
5173 36. The ${quote: operator now quotes the string if it is empty.
5175 37. The install script runs exim in order to find its version number. If for
5176 some reason other than non-existence or emptiness, which it checks, it
5177 could not run './exim', it was installing it with an empty version number,
5178 i.e. as "exim-". This error state is now caught, and the installation is
5181 38. An argument was missing from the function that creates an error message
5182 when Exim fails to connect to the socket for saslauthd authentication.
5183 This could cause Exim to crash, or give a corrupted message.
5185 39. Added isip, isip4, and isip6 to ${if conditions.
5187 40. The ACL variables $acl_xx are now saved with the message, and can be
5188 accessed later in routers, transports, and filters.
5190 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
5191 strings in the file are not string-expanded.
5193 42. If a MAIL command specified a SIZE value that was too large to fit into an
5194 int variable, the check against message_size_limit failed. Such values are
5195 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
5196 day this will have to be increased, but I don't think I want to be around
5197 when emails are that large.
5204 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
5205 iconv() is not standard in FreeBSD.
5207 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
5208 IPv6 enabled. The observed symptom was a segmentation fault on return from
5209 the function os_common_find_running_interfaces() in src/os.c.
5211 3. In the check_special_case() function in daemon.c I had used "errno" as an
5212 argument name, which causes warnings on some systems. This was basically a
5213 typo, since it was named "eno" in the comments!
5215 4. The code that waits for the clock to tick (at a resolution of some fraction
5216 of a second) so as to ensure message-id uniqueness was always waiting for
5217 at least one whole tick, when it could have waited for less. [This is
5218 almost certainly not relevant at current processor speeds, where it is
5219 unlikely to ever wait at all. But we try to future-proof.]
5221 5. The function that sleeps for a time interval that includes fractions of a
5222 second contained a race. It did not block SIGALRM between setting the
5223 timer, and suspending (a couple of lines later). If the interval was short
5224 and the sigsuspend() was delayed until after it had expired, the suspension
5225 never ended. On busy systems this could lead to processes getting stuck for
5228 6. Some uncommon configurations may cause a lookup to happen in a queue runner
5229 process, before it forks any delivery processes. The open lookup caching
5230 mechanism meant that the open file or database connection was passed into
5231 the delivery process. The problem was that delivery processes always tidy
5232 up cached lookup data. This could cause a problem for the next delivery
5233 process started by the queue runner, because the external queue runner
5234 process does not know about the closure. So the next delivery process
5235 still has data in the lookup cache. In the case of a file lookup, there was
5236 no problem because closing a file descriptor in a subprocess doesn't affect
5237 the parent. However, if the lookup was caching a connection to a database,
5238 the connection was closed, and the second delivery process was likely to
5239 see errors such as "PGSQL: query failed: server closed the connection
5240 unexpectedly". The problem has been fixed by closing all cached lookups
5241 in a queue runner before running a delivery process.
5243 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
5244 seem to have the "const" qualifier which it has on other OS. I've
5247 8. Change 4.21/2 was too strict. It is only if there are two authenticators
5248 *of the same type* (client or server) with the same public name that an
5249 error should be diagnosed.
5251 9. When Exim looked up a host name for an IP address, but failed to find the
5252 original IP address when looking up the host name (a safety check), it
5253 output the message "<ip address> does not match any IP for NULL", which was
5254 confusing, to say the least. The bug was that the host name should have
5255 appeared instead of "NULL".
5257 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
5258 user that is built into the binary, and the -C or -D options is used, root
5259 privilege is dropped before the configuration file is read. In addition,
5260 logging is switched to stderr instead of the normal log files. If the
5261 configuration then re-defines the Exim user, the unprivileged environment
5262 is probably not what is expected, so Exim logs a panic warning message (but
5265 However, if deliver_drop_privilege is set, the unprivileged state may well
5266 be exactly what is intended, so the warning has been cut out in that case,
5267 and Exim is allowed to try to write to its normal log files.
5273 1. smtp_return_error_details was not giving details for temporary sender
5274 or receiver verification errors.
5276 2. Diagnose a configuration error if two authenticators have the same public
5279 3. Exim used not to create the message log file for a message until the first
5280 delivery attempt. This could be confusing when incoming messages were held
5281 for policy or load reasons. The message log file is now created at the time
5282 the message is received, and an initial "Received" line is written to it.
5284 4. The automatically generated man page for command line options had a minor
5285 bug that caused no ill effects; however, a more serious problem was that
5286 the procedure for building the man page automatically didn't always
5287 operate. Consequently, release 4.20 contains an out-of-date version. This
5288 shouldn't happen again.
5290 5. When building Exim with embedded Perl support, the script that builds the
5291 Makefile was calling 'perl' to find its compile-time parameters, ignoring
5292 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
5294 6. The freeze_tell option was not being used for messages that were frozen on
5295 arrival, either by an ACL or by local_scan().
5297 7. Added the smtp_incomplete_transaction log selector.
5299 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
5300 was accepting AUTH without a new EHLO.
5302 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
5303 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
5306 10. Logging of TCP/IP connections (when configured) now happens in the main
5307 daemon process instead of the child process, so that the TCP/IP connection
5308 count is more accurate (but it can never be perfect).
5310 11. The use of "drop" in a nested ACL was not being handled correctly in the
5311 outer ACL. Now, if condition failure induced by the nested "drop" causes
5312 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
5313 or "require"), the connection is dropped.
5315 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
5316 that yield "discard" can now be used with an "accept" or a "discard" verb,
5317 but an error is generated for any others (because I can't see a useful way
5318 to define what should happen).
5320 13. When an ACL is read dynamically from a file (or anywhere else), the lines
5321 are now processed in the same way as lines in the Exim configuration file.
5322 In particular, continuation lines are supported.
5324 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
5326 15. Added -ti meaning -t -i.
5328 16. Check for letters, digits, hyphens, and dots in the names of dnslist
5329 domains, and warn by logging if others are found.
5331 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
5332 returned from GIFCONF when Exim is trying to find the list of interfaces on
5333 a host. The code in os.c has been modified to copy each ifreq to an aligned
5334 structure in all cases.
5336 Also, in some cases, the returned ifreq's were being copied to a 'struct
5337 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
5338 means the last couple of bytes of an IPv6 address could be chopped if the
5339 ifreq contained only a normal sockaddr (14 bytes storage).
5341 18. Named domain lists were not supported in the hosts_treat_as_local option.
5342 An entry such as +xxxx was not recognized, and was treated as a literal
5345 19. Ensure that header lines added by a DATA ACL are included in the reject log
5346 if the ACL subsequently rejects the message.
5348 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
5349 MD5 (which is deprecated).
5351 21. When testing a filter file using -bf, Exim was writing a message when it
5352 took the sender from a "From " line in the message, but it was not doing so
5353 when it took $return_path from a Return-Path: header line. It now does.
5355 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
5356 with a valid header line field name (a series of printing characters
5357 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
5359 23. Changed "disc" in the source to "disk" to conform to the documentation and
5360 the book and for uniformity.
5362 24. Ignore Sendmail's -Ooption=value command line item.
5364 25. When execve() failed while trying to run a command in a pipe transport,
5365 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
5366 could be confused with a return value of 69 from the command itself. This
5367 has been changed to 127, the value the shell returns if it is asked to run
5368 a non-existent command. The wording for the related log line suggests a
5369 non-existent command as the problem.
5371 26. If received_header_text expands to an empty string, do not add a Received:
5372 header line to the message. (Well, it adds a token one on the spool, but
5373 marks it "old" so that it doesn't get used or transmitted.)
5375 27. Installed eximstats 1.28 (addition of -nt option).
5377 28. There was no check for failure on the call to getsockname() in the daemon
5378 code. This can fail if there is a shortage of resources on the system, with
5379 ENOMEM, for example. A temporary error is now given on failure.
5381 29. Contrary to the C standard, it seems that in some environments, the
5382 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
5383 program. Exim now does this explicitly; it affects the formatting of
5384 timestamps using strftime().
5386 30. If exiqsumm was given junk data, it threw up some uninitialized variable
5387 complaints. I've now initialized all the variables, to avoid this.
5389 32. Header lines added by a system filter were not being "seen" during
5390 transport-time rewrites.
5392 33. The info_callback() function passed to OpenSSL is set up with type void
5393 (*)(SSL *, int, int), as described somewhere. However, when calling the
5394 function (actually a macro) that sets it up, the type void(*)() is
5395 expected. I've put in a cast to prevent warnings from picky compilers.
5397 34. If a DNS black list lookup found a CNAME record, but there were no A
5398 records associated with the domain it pointed at, Exim crashed.
5400 35. If a DNS black list lookup returned more than one A record, Exim ignored
5401 all but the first. It now scans all returned addresses if a particular IP
5402 value is being sought. In this situation, the contents of the
5403 $dnslist_value variable are a list of all the addresses, separated by a
5406 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
5407 to accept a host name and all its aliases if the forward lookup for any of
5408 them yielded the IP address of the incoming connection. Now it accepts only
5409 those names whose forward lookup yields the correct IP address. Any other
5410 names are discarded. This closes a loophole whereby a rogue DNS
5411 administrator could create reverse DNS records to break through a
5412 wildcarded host restriction in an ACL.
5414 37. If a user filter or a system filter that ran in a subprocess used any of
5415 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
5416 the wrong values were passed to the pipe command ($thisaddress had the
5417 value of $0, $0 had the value of $1, etc). This bug was introduced by
5418 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
5420 38. Improved the line breaking for long SMTP error messages from ACLs.
5421 Previously, if there was no break point between 40 and 75 characters, Exim
5422 left the rest of the message alone. Two changes have been made: (a) I've
5423 reduced the minimum length to 35 characters; (b) if it can't find a break
5424 point between 35 and 75 characters, it looks ahead and uses the first one
5425 that it finds. This may give the occasional overlong line, but at least the
5426 remaining text gets split now.
5428 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
5429 file descriptors might be low, and that setting 1000 would always raise it.
5430 It turns out that in some environments, the limit is already over 1000 and
5431 that lowering it causes trouble. So now Exim takes care not to decrease it.
5433 40. When delivering a message, the value of $return_path is set to $sender_
5434 address at the start of routing (routers may change the value). By an
5435 oversight, this default was not being set up when an address was tested by
5436 -bt or -bv, which affected the outcome if any router or filter referred to
5439 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
5440 log only when "message" or "log_message" are set. However, if one of the
5441 conditions was an address verification, or a call to a nested ACL, the
5442 messages generated by the underlying test were being passed through. This
5443 no longer happens. The underlying message is available in $acl_verify_
5444 message for both "message" and "log_message" expansions, so it can be
5445 passed through if needed.
5447 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
5448 new expansion $bh_ to give the encoded byte string without charset
5449 translation. Translation happens only if iconv() is available; HAVE_ICONV
5450 indicates this at build time. HEADERS_CHARSET gives the charset to
5451 translate to; headers_charset can change it in the configuration, and
5452 "headers charset" can change it in an individual filter file.
5454 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
5455 that creates RFC 2047 encoded "words" labels them as that charset instead
5456 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
5457 expansion operator; (ii) when Exim creates a From: line for a local
5458 message; (iii) when a header line is rewritten to include a "phrase" part.
5460 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
5461 buggy, causing it to skip the first lines of messages whose message ID
5462 ended in 'D'. This would not have bitten before Exim release 4.14, because
5463 message IDs were unlikely to end in 'D' before then. The effect was to have
5464 incorrect size information for certain domains.
5466 45. #include "config.h" was missing at the start of the crypt16.c module. This
5467 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
5470 46. If there was a timeout during a "random" callout check, Exim treated it as
5471 a failure of the random address, and carried on sending RSET and the real
5472 address. If the delay was just some slowness somewhere, the response to the
5473 original RCPT would be taken as a response to RSET and so on, causing
5474 mayhem of various kinds.
5476 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
5477 when I implemented it. It didn't allow for the fact that some option values
5478 may legitimatetly be negative (e.g. size_addition), and it didn't even do
5479 the right test for positive values.
5481 48. Domain names in DNS records are case-independent. Exim always looks them up
5482 in lower case. Some resolvers return domain names in exactly the case they
5483 appear in the zone file, that is, they may contain uppercase letters. Not
5484 all resolvers do this - some return always lower case. Exim was treating a
5485 change of case by a resolver as a change of domain, similar to a widening
5486 of a domain abbreviation. This triggered its re-routing code and so it was
5487 trying to route what was effectively the same domain again. This normally
5488 caused routing to fail (because the router wouldn't handle the domain
5489 twice). Now Exim checks for this case specially, and just changes the
5490 casing of the domain that it ultimately uses when it transmits the message
5493 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
5496 50. If a filter generated a file delivery with a non-absolute name (possible if
5497 no home directory exists for the router), the forbid_file option was not
5500 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
5501 the existing equality matching.
5503 52. Exim was using ints instead of ino_t variables in some places where it was
5504 dealing with inode numbers.
5506 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
5507 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
5508 called TMPDIR, and if it finds it is different, it changes its value.
5510 54. The smtp_printf() function is now made available to local_scan() so
5511 additional output lines can be written before returning. There is also an
5512 smtp_fflush() function to enable the detection of a dropped connection.
5513 The variables smtp_input and smtp_batched_input are exported to
5516 55. Changed the default runtime configuration: the message "Unknown user"
5517 has been removed from the ACL, and instead placed on the localuser router,
5518 using the cannot_route_message feature. This means that any verification
5519 failures that generate their own messages won't get overridden. Similarly,
5520 the "Unrouteable address" message that was in the ACL for unverifiable
5521 relay addresses has also been removed.
5523 56. Added hosts_avoid_esmtp to the smtp transport.
5525 57. The exicyclog script was not checking for the esoteric option
5526 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
5527 will work only if exicyclog is run under the appropriate euid.
5529 58. Following a discussion on the list, the rules by which Exim recognises line
5530 endings on incoming messages have been changed. The -dropcr and drop_cr
5531 options are now no-ops, retained only for backwards compatibility. The
5532 following line terminators are recognized: LF CRLF CR. However, special
5533 processing applies to CR:
5535 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
5536 nor a local message in the state where . is a terminator.
5538 (ii) If a bare CR is encountered in a header line, an extra space is added
5539 after the line terminator so as not to end the header. The reasoning
5540 behind this is that bare CRs in header lines are most likely either
5541 to be mistakes, or people trying to play silly games.
5543 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
5544 was being incorrectly given as 18 bytes larger than it should have been.
5545 This is a VOB (very old bug).
5547 60. This may never have affected anything current, but just in case it has:
5548 When the local host is found other than at the start of a list of hosts,
5549 the local host, those with the same MX, and any that follow, are discarded.
5550 When the list in question was part of a longer list of hosts, the following
5551 hosts (not currently being processed) were also being discarded. This no
5552 longer happens. I'm not sure if this situation could ever has previously
5555 61. Added the "/MX" feature to lists of hosts in the manualroute and query
5558 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
5559 header. This is something that is recommended in a new Internet Draft, and
5560 is something that is documented as being done by Sendmail. There are two
5561 possible values. For messages generated by the autoreply transport, Exim
5564 Auto-Submitted: auto-replied
5566 whereas for all other generated messages (e.g. bounces) it adds
5568 Auto-Submitted: auto-generated
5570 63. The "personal" condition in filters now includes a test for the
5571 Auto-Submitted: header. If it contains the string "auto-" the message it
5572 not considered personal.
5574 64. Added rcpt_include_affixes as a generic transport option.
5576 65. Added queue_only_override (default true).
5578 66. Added the syslog_duplication option.
5580 67. If what should have been the first header line of a message consisted of
5581 a space followed by a colon, Exim was mis-interpreting it as a header line.
5582 It isn't of course - it is syntactically invalid and should therefore be
5583 treated as the start of the message body. The misbehaviour could have
5584 caused a number of strange effects, including loss of data in subsequent
5585 header lines, and spool format errors.
5587 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
5588 client host had authenticated. This control can now be exercised by an ACL
5589 for more flexibility.
5591 69. By default, callouts do not happen when testing with -bh. There is now a
5592 variant, -bhc, which does actually run the callout code, including
5593 consulting and updating the callout cache.
5595 70. Added support for saslauthd authentication, courtesy of Alexander
5598 71. If statvfs() failed on the spool or log directories while checking their
5599 size for availability, Exim confusingly gave the error "space shortage".
5600 Furthermore, in debugging mode it crashed with a floating point exception.
5601 These checks are done if check_{spool,log}_{space,inodes} are set, and when
5602 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
5603 serious problem, Exim now writes to the main and panic logs when this
5604 happens, with details of the failure. It then refuses to accept the
5605 incoming message, giving the message "spool directory problem" or "log
5606 directory problem" with a 421 code for SMTP messages.
5608 72. When Exim is about to re-exec itself, it ensures that the file descriptors
5609 0, 1, and 2 exist, because some OS complain for execs without them (see
5610 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
5611 descriptors. However, the code omitted to check that the open succeeded,
5612 causing mysterious errors if for some reason the permissions on /dev/null
5613 got screwed. Now Exim writes a message to the main and panic logs, and
5614 bombs out if it can't open /dev/null.
5616 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
5617 interact so that it is all more flexible. It is supposed to remain
5618 backwards compatible. Also added extra_local_interfaces.
5620 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
5621 to bomb out with an assertion failure - to the client this appears as a
5622 connection drop. This problem occurs in the part of the code that was taken
5623 from the Samba project. Fortunately, the assertion is in a very simple
5624 function, so I have fixed this by reproducing the function inline in the
5625 one place where it is called, and arranging for authentication to fail
5626 instead of killing the process with assert().
5628 75. The SPA client code was not working when the server requested OEM rather
5629 than Unicode encoding.
5631 76. Added code to make require_files with a specific uid setting more usable in
5632 the case where statting the file as root fails - usually a non-root-mounted
5633 NFS file system. When this happens and the failure is EACCES, Exim now
5634 forks a subprocess and does the per-uid checking as the relevant uid.
5636 77. Added process_log_path.
5638 78. If log_file_path was not explicitly set, a setting of check_log_space or
5639 check_log_inodes was ignored.
5641 79. If a space check for the spool or log partitions fails, the incident is now
5642 logged. Of course, in the latter case the data may get lost...
5644 80. Added the %p formatting code to string_format() so that it can be used to
5645 print addresses in debug_print(). Adjusted all the address printing in the
5646 debugging in store.c to use %p rather than %d.
5648 81. There was a concern that a line of code in smtp_in.c could overflow a
5649 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
5650 initially expressed, the concern was not well-founded, because trailing
5651 spaces are removed early. However, if the trailing spaces were followed by
5652 a NULL, they did not get removed, so the overflow was possible. Two fixes
5655 (a) I re-wrote the offending code in a cleaner fashion.
5656 (b) If an incoming SMTP command contains a NULL character, it is rejected
5659 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
5660 runs initgroups(), so that if the Exim user is in any additional groups,
5661 they will be used during message reception.
5667 The change log for 4.20 and earlier releases has been archived.
git://git.exim.org / exim.git / blob