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 and control modifier for inbound.
21 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
22 (Only plugin which currently uses this is kerberos4, which nobody should
23 be using, but we should make it available and other future plugins might
24 conceivably use it, even though it would break NAT; stuff *should* be
25 using channel bindings instead).
27 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
28 name; added for Sendmail compatibility; requires admin caller.
29 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
30 just ignore it); requires trusted caller.
31 Also parse but ignore: -Ac -Am -X<logfile>
34 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
39 PP/01 Handle short writes when writing local log-files.
40 In practice, only affects FreeBSD (8 onwards).
41 Bugzilla 1053, with thanks to Dmitry Isaikin.
43 NM/01 Bugzilla 949 - Documentation tweak
45 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
48 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
50 PP/02 Implemented gsasl authenticator.
52 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
54 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
55 `pkg-config foo` for cflags/libs.
57 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
58 with rest of GSASL and with heimdal_gssapi.
60 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
61 `pkg-config foo` for cflags/libs for the TLS implementation.
63 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
64 properties get this fed in as external SSF. A number of robustness
65 and debugging improvements to the cyrus_sasl authenticator.
67 PP/08 cyrus_sasl server now expands the server_realm option.
69 PP/09 Bugzilla 1214 - Log authentication information in reject log.
70 Patch by Jeremy Harris.
72 PP/10 Added dbmjz lookup type.
74 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
76 PP/12 MAIL args handles TAB as well as SP, for better interop with
77 non-compliant senders.
78 Analysis and variant patch by Todd Lyons.
80 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
81 Bug report from Lars Müller <lars@samba.org> (via SUSE),
82 Patch from Dirk Mueller <dmueller@suse.com>
84 PP/13 tls_peerdn now print-escaped for spool files.
85 Observed some $tls_peerdn in wild which contained \n, which resulted
86 in spool file corruption.
88 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
89 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
90 or write after TLS renegotiation, which otherwise led to messages
93 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
94 as a tracking header (ie: a signed header comes before the signature).
95 Patch from Wolfgang Breyha.
97 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
98 comma-sep list; embedded commas doubled.
100 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
102 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
104 Report and patch from Dmitry Banschikov.
106 PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
107 Removed SSL_clear() after SSL_new() which led to protocol negotiation
108 failures. We appear to now support TLS1.1+ with Exim.
110 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
111 lets Exim select keys and certificates based upon TLS SNI from client.
112 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
113 before an outbound SMTP session. New log_selector, +tls_sni.
115 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
116 NULL dereference. Report and patch from Alun Jones.
118 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
119 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
120 Not seeing resolver debug output on NetBSD, but suspect this is a
121 resolver implementation change.
123 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
124 Left warnings. Added "eximon gdb" invocation mode.
126 PP/21 Defaulting "accept_8bitmime" to true, not false.
128 PP/22 Added -bw for inetd wait mode support.
130 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
131 locate the relevant includes and libraries. Made this the default.
133 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
134 Bugzilla 1246, report and most of solution from Tomasz Kusy.
136 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
137 This may cause build issues on older platforms.
139 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
140 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
141 gnutls_require_mac & gnutls_require_protocols (no longer supported).
142 Added SNI support via GnuTLS too.
143 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
145 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
147 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
148 Applied second patch from Janne, implementing suggestion to default
149 multiple-strings-in-record handling to match SPF spec.
151 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
153 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
154 read-only, out of scope).
155 Patch from Wolfgang Breyha, report from Stuart Northfield.
157 PP/29 Fix three issues highlighted by clang analyser static analysis.
158 Only crash-plausible issue would require the Cambridge-specific
159 iplookup router and a misconfiguration.
160 Report from Marcin Mirosław.
162 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
164 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
165 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
166 As part of this, removing so much warning spew let me fix some minor
167 real issues in debug logging.
169 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
170 assignment on my part. Fixed.
172 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
173 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
174 Janne Snabb (who went above and beyond: thank you).
176 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
177 string otherwise requires a connection and a bunch more work and it's
178 relatively easy to get wrong. Should also expose TLS library linkage
181 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
182 64-bit ${eval} (JH/03).
184 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
185 GNU libc to support some of the 64-bit stuff, should not lead to
186 conflicts. Defined before os.h is pulled in, so if a given platform
187 needs to override this, it can.
189 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
190 protection layer was required, which is not implemented.
191 Bugzilla 1254, patch from Wolfgang Breyha.
193 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
194 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
195 tls_dhparam take prime identifiers. Also unbreak combination of
196 OpenSSL+DH_params+TLSSNI.
198 PP/39 Disable SSLv2 by default in OpenSSL support.
204 PP/01 Solaris build fix for Oracle's LDAP libraries.
205 Bugzilla 1109, patch from Stephen Usher.
207 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
209 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
212 TF/02 Fix a couple more cases where we did not log the error message
213 when unlink() failed. See also change 4.74-TF/03.
215 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
216 lock up or crash if it happened to be inside a call to libc when it
217 got a SIGUSR1 from exiwhat.
219 The SIGUSR1 handler appends the current process status to the process
220 log which is later printed by exiwhat. It used to use the general
221 purpose logging code to do this, but several functions it calls are
222 not safe for signals.
224 The new output code in the SIGUSR1 handler is specific to the process
225 log, and simple enough that it's easy to inspect for signal safety.
226 Removing some special cases also simplifies the general logging code.
227 Removing the spurious timestamps from the process log simplifies
230 TF/04 Improved ratelimit ACL condition.
232 The /noupdate option has been deprecated in favour of /readonly which
233 has clearer semantics. The /leaky, /strict, and /readonly update modes
234 are mutually exclusive. The update mode is no longer included in the
235 database key; it just determines when the database is updated. (This
236 means that when you upgrde Exim will forget old rate measurements.)
238 Exim now checks that the per_* options are used with an update mode that
239 makes sense for the current ACL. For example, when Exim is processing a
240 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
241 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
242 must specify per_mail/readonly. If you omit the update mode it defaults to
243 /leaky where that makes sense (as before) or /readonly where required.
245 The /noupdate option is now undocumented but still supported for
246 backwards compatibility. It is equivalent to /readonly except that in
247 ACLs where /readonly is required you may specify /leaky/noupdate or
248 /strict/noupdate which are treated the same as /readonly.
250 A useful new feature is the /count= option. This is a generalization
251 of the per_byte option, so that you can measure the throughput of other
252 aggregate values. For example, the per_byte option is now equivalent
253 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
255 The per_rcpt option has been generalized using the /count= mechanism
256 (though it's more complicated than the per_byte equivalence). When it is
257 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
258 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
259 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
260 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
261 Note that using per_rcpt with a non-readonly update mode in more than
262 one ACL will cause the recipients to be double-counted. (The per_mail
263 and per_byte options don't have this problem.)
265 The handling of very low rates has changed slightly. If the computed rate
266 is less than the event's count (usually one) then this event is the first
267 after a long gap. In this case the rate is set to the same as this event's
268 count, so that the first message of a spam run is counted properly.
270 The major new feature is a mechanism for counting the rate of unique
271 events. The new per_addr option counts the number of different
272 recipients that someone has sent messages to in the last time period. It
273 behaves like per_rcpt if all the recipient addresses are different, but
274 duplicate recipient addresses do not increase the measured rate. Like
275 the /count= option this is a general mechanism, so the per_addr option
276 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
277 example, measure the rate that a client uses different sender addresses
278 with the options per_mail/unique=$sender_address. There are further
279 details in the main documentation.
281 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
283 TF/06 Removed a few PCRE remnants.
285 TF/07 Automatically extract Exim's version number from tags in the git
286 repository when doing development or release builds.
288 PP/02 Raise smtp_cmd_buffer_size to 16kB.
289 Bugzilla 879. Patch from Paul Fisher.
291 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
292 Heavily based on revision 40f9a89a from Simon Arlott's tree.
295 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
297 PP/05 Variable $av_failed, true if the AV scanner deferred.
298 Bugzilla 1078. Patch from John Horne.
300 PP/06 Stop make process more reliably on build failure.
301 Bugzilla 1087. Patch from Heiko Schlittermann.
303 PP/07 Make maildir_use_size_file an _expandable_ boolean.
304 Bugzilla 1089. Patch from Heiko Schlittermann.
306 PP/08 Handle ${run} returning more data than OS pipe buffer size.
307 Bugzilla 1131. Patch from Holger Weiß.
309 PP/09 Handle IPv6 addresses with SPF.
310 Bugzilla 860. Patch from Wolfgang Breyha.
312 PP/10 GnuTLS: support TLS 1.2 & 1.1.
314 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
317 PP/11 match_* no longer expand right-hand-side by default.
318 New compile-time build option, EXPAND_LISTMATCH_RHS.
319 New expansion conditions, "inlist", "inlisti".
321 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
323 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
325 PP/14 fix log_write() format string regression from TF/03.
326 Bugzilla 1152. Patch from Dmitry Isaikin.
332 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
334 PP/02 Harmonised TLS library version reporting; only show if debugging.
335 Layout now matches that introduced for other libraries in 4.74 PP/03.
337 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
339 PP/04 New "dns_use_edns0" global option.
341 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
344 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
345 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
347 TK/01 Updated PolarSSL code to 0.14.2.
348 Bugzilla 1097. Patch from Andreas Metzler.
350 PP/07 Catch divide-by-zero in ${eval:...}.
353 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
356 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
357 format-string attack -- SECURITY: remote arbitrary code execution.
359 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
360 time unintentionally subject to list matching rules, letting the header
361 cause arbitrary Exim lookups (of items which can occur in lists, *not*
362 arbitrary string expansion). This allowed for information disclosure.
364 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
365 INT_MIN/-1 -- value coerced to INT_MAX.
371 NM/01 Workround for PCRE version dependency in version reporting
374 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
375 This fixes portability to compilers other than gcc, notably
376 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
378 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
379 makefiles for portability to HP-UX and POSIX correctness.
381 PP/01 Permit LOOKUP_foo enabling on the make command-line.
382 Also via indented variable definition in the Makefile.
383 (Debugging by Oliver Heesakkers).
385 PP/02 Restore caching of spamd results with expanded spamd_address.
386 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
388 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
389 Improves build reliability. Fix from: Frank Elsner
391 NM/02 Fix wide character breakage in the rfc2047 coding
392 Fixes bug 1064. Patch from Andrey N. Oktyabrski
394 NM/03 Allow underscore in dnslist lookups
395 Fixes bug 1026. Patch from Graeme Fowler
397 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
398 Code patches from Adam Ciarcinski of NetBSD.
400 NM/04 Fixed exiqgrep to cope with mailq missing size issue
403 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
404 is logged, to avoid truncation. Patch from John Horne.
406 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
407 Patch from Jakob Hirsch.
409 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
410 SQL string expansion failure details.
411 Patch from Andrey Oktyabrski.
413 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
414 Patch from Simon Arlott.
416 PP/09 New lookups functionality failed to compile on old gcc which rejects
417 extern declarations in function scope.
418 Patch from Oliver Fleischmann
420 PP/10 Use sig_atomic_t for flags set from signal handlers.
421 Check getgroups() return and improve debugging.
422 Fixed developed for diagnosis in bug 927 (which turned out to be
425 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
426 Patch from Mark Zealey.
428 PP/12 Bugzilla 1056: Improved spamd server selection.
429 Patch from Mark Zealey.
431 PP/13 Bugzilla 1086: Deal with maildir quota file races.
432 Based on patch from Heiko Schlittermann.
434 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
435 Patch from Uwe Doering, sign-off by Michael Haardt.
437 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
438 variable declaration deep within a block. Bug and patch from
441 PP/15 lookups-Makefile IRIX compatibilty coercion.
443 PP/16 Make DISABLE_DKIM build knob functional.
445 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
446 Patch by Simon Arlott
448 TF/03 Fix valgrind.h portability to C89 compilers that do not support
449 variable argument macros. Our copy now differs from upstream.
455 TF/01 Failure to get a lock on a hints database can have serious
456 consequences so log it to the panic log.
458 TF/02 Log LMTP confirmation messages in the same way as SMTP,
459 controlled using the smtp_confirmation log selector.
461 TF/03 Include the error message when we fail to unlink a spool file.
463 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
464 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
465 for maintaining out-of-tree patches for some time.
467 PP/01 Bugzilla 139: Documentation and portability issues.
468 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
469 Handle per-OS dynamic-module compilation flags.
471 PP/02 Let /dev/null have normal permissions.
472 The 4.73 fixes were a little too stringent and complained about the
473 permissions on /dev/null. Exempt it from some checks.
474 Reported by Andreas M. Kirchwitz.
476 PP/03 Report version information for many libraries, including
477 Exim version information for dynamically loaded libraries. Created
478 version.h, now support a version extension string for distributors
479 who patch heavily. Dynamic module ABI change.
481 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
482 privilege escalation vulnerability whereby the Exim run-time user
483 can cause root to append content of the attacker's choosing to
486 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
489 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
490 If dropping privileges for untrusted macros, we disabled normal logging
491 on the basis that it would fail; for the Exim run-time user, this is not
492 the case, and it resulted in successful deliveries going unlogged.
493 Fixed. Reported by Andreas Metzler.
499 PP/01 Date: & Message-Id: revert to normally being appended to a message,
500 only prepend for the Resent-* case. Fixes regression introduced in
501 Exim 4.70 by NM/22 for Bugzilla 607.
503 PP/02 Include check_rfc2047_length in configure.default because we're seeing
504 increasing numbers of administrators be bitten by this.
506 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
508 PP/03 Bugzilla 994: added openssl_options main configuration option.
510 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
512 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
514 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
516 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
517 without a peer certificate, leading to a segfault because of an
518 assumption that peers always have certificates. Be a little more
519 paranoid. Problem reported by Martin Tscholak.
521 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
522 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
523 NB: ClamAV planning to remove STREAM in "middle of 2010".
524 CL also introduces -bmalware, various -d+acl logging additions and
525 more caution in buffer sizes.
527 PP/09 Implemented reverse_ip expansion operator.
529 PP/10 Bugzilla 937: provide a "debug" ACL control.
531 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
533 PP/12 Bugzilla 973: Implement --version.
535 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
537 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
539 PP/15 Bugzilla 816: support multiple condition rules on Routers.
541 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
542 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
543 ignore trailing whitespace.
545 JJ/02 prevent non-panic DKIM error from being sent to paniclog
547 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
550 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
551 Notification from Dr Andrew Aitchison.
553 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
554 ExtendedDetectionInfo response format.
555 Notification from John Horne.
557 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
560 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
561 XSL and documented dependency on system catalogs, with examples of how
564 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
567 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
568 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
569 configuration file which is writeable by the Exim user or group.
571 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
572 of configuration files to cover files specified with the -C option if
573 they are going to be used with root privileges, not just the default
576 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
577 option (effectively making it always true).
579 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
580 files to be used while preserving root privileges.
582 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
583 that rogue child processes cannot use them.
585 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
586 run-time user, instead of root.
588 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
589 Exim run-time user without dropping privileges.
591 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
592 result string, instead of calling string_vformat() twice with the same
595 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
596 for other users. Others should always drop root privileges if they use
597 -C on the command line, even for a whitelisted configure file.
599 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
601 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
607 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
608 $data_path, and $header_path variables; fixed documentation bugs and
611 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
612 exipick to access non-standard spools, including the "frozen" queue
615 NM/01 Bugzilla 965: Support mysql stored procedures.
616 Patch from Alain Williams
618 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
620 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
621 Patch from Andreas Metzler
623 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
624 Patch from Kirill Miazine
626 NM/05 Bugzilla 671: Added umask to procmail example.
628 JJ/03 installed exipick 20100323.0, fixing doc bug
630 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
631 directory. Notification and patch from Dan Rosenberg.
633 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
635 TK/02 Improve log output when DKIM signing operation fails.
637 MH/01 Treat the transport option dkim_domain as a colon separated
638 list, not as a single string, and sign the message with each element,
639 omitting multiple occurences of the same signer.
641 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
642 Bugzilla 985, 986. Patch by Simon Arlott
644 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
645 Patch by Simon Arlott
647 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
648 MBX locking. Notification from Dan Rosenberg.
654 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
656 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
658 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
660 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
662 NM/04 Bugzilla 915: Flag broken perl installation during build.
668 TK/01 Added patch by Johannes Berg that expands the main option
669 "spamd_address" if it starts with a dollar sign.
671 TK/02 Write list of recipients to X-Envelope-Sender header when building
672 the mbox-format spool file for content scanning (suggested by Jakob
675 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
676 (http://www.dcc-servers.net/) support via dccifd. Activated by
677 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
679 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
680 by Mark Daniel Reidel <mr@df.eu>.
682 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
683 When building exim an external PCRE library is now needed -
684 PCRE is a system library on the majority of modern systems.
685 See entry on PCRE_LIBS in EDITME file.
687 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
688 conversation. Added nologin parameter to request.
689 Patch contributed by Kirill Miazine.
691 TF/01 Do not log submission mode rewrites if they do not change the address.
693 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
695 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
696 log files in place. Contributed by Roberto Lima.
698 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
700 TF/03 Bugzilla 615: When checking the local_parts router precondition
701 after a local_part_suffix or local_part_prefix option, Exim now
702 does not use the address's named list lookup cache, since this
703 contains cached lookups for the whole local part.
705 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
706 Robert Millan. Documentation is in experimental-spec.txt.
708 TF/04 Bugzilla 668: Fix parallel build (make -j).
710 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
712 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
713 Patch provided by Jan Srzednicki.
715 TF/05 Leading white space used to be stripped from $spam_report which
716 wrecked the formatting. Now it is preserved.
718 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
719 that they are available at delivery time.
721 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
723 TF/08 TLS error reporting now respects the incoming_interface and
724 incoming_port log selectors.
726 TF/09 Produce a more useful error message if an SMTP transport's hosts
727 setting expands to an empty string.
729 NM/06 Bugzilla 744: EXPN did not work under TLS.
730 Patch provided by Phil Pennock.
732 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
733 Patch provided by Richard Godbee.
735 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
736 acl_smtp_notquit, added index entry.
738 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
739 Patch provided by Eugene Bujak.
741 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
742 accept(). Patch provided by Maxim Dounin.
744 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
745 Patch provided by Phil Pennock.
747 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
749 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
750 Patch provided by Brad "anomie" Jorsch.
752 NM/14 Bugzilla 622: Added timeout setting to transport filter.
753 Patch provided by Dean Brooks.
755 TK/05 Add native DKIM support (does not depend on external libraries).
757 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
758 Patch provided by Graeme Fowler.
760 NM/16 Bugzilla 851: Documentation example syntax fix.
762 NM/17 Changed NOTICE file to remove references to embedded PCRE.
764 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
767 NM/19 Bugzilla 745: TLS version reporting.
768 Patch provided by Phil Pennock.
770 NM/20 Bugzilla 167: bool: condition support.
771 Patch provided by Phil Pennock.
773 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
774 clients. Patch provided by Phil Pennock.
776 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
777 Patch provided by Brad "anomie" Jorsch.
779 NM/23 Bugzilla 687: Fix misparses in eximstats.
780 Patch provided by Heiko Schlittermann.
782 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
783 Patch provided by Heiko Schlittermann.
785 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
786 plus update to original patch.
788 NM/26 Bugzilla 799: Documentation correction for ratelimit.
790 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
791 Patch provided by David Brownlee.
793 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
795 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
797 NM/30 Bugzilla 888: TLS documentation bugfixes.
799 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
801 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
802 Unlike the original bugzilla I have changed all shell scripts in src tree.
804 NM/33 Bugzilla 898: Transport filter timeout fix.
805 Patch by Todd Rinaldo.
807 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
808 Patch by Serge Demonchaux.
810 NM/35 Bugzilla 39: Base64 decode bug fixes.
811 Patch by Jakob Hirsch.
813 NM/36 Bugzilla 909: Correct connect() call in dcc code.
815 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
817 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
819 NM/39 Bugzilla 911: Fixed MakeLinks build script.
825 TK/01 Add preliminary DKIM support. Currently requires a forked version of
826 ALT-N's libdkim that I have put here:
827 http://duncanthrax.net/exim-experimental/
829 Note to Michael Haardt: I had to rename some vars in sieve.c. They
830 were called 'true' and it seems that C99 defines that as a reserved
831 keyword to be used with 'bool' variable types. That means you could
832 not include C99-style headers which use bools without triggering
833 build errors in sieve.c.
835 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
836 as mailq or other aliases. Changed the --help handling significantly
837 to do whats expected. exim_usage() emits usage/help information.
839 SC/01 Added the -bylocaldomain option to eximstats.
841 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
843 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
845 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
851 PH/01 Another patch from the Sieve maintainer.
853 PH/02 When an IPv6 address is converted to a string for single-key lookup
854 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
855 dots are used instead of colons so that keys in lsearch files need not
856 contain colons. This was done some time before quoting was made available
857 in lsearch files. However, iplsearch files do require colons in IPv6 keys
858 (notated using the quote facility) so as to distinguish them from IPv4
859 keys. This meant that lookups for IP addresses in host lists did not work
860 for iplsearch lookups.
862 This has been fixed by arranging for IPv6 addresses to be expressed with
863 colons if the lookup type is iplsearch. This is not incompatible, because
864 previously such lookups could never work.
866 The situation is now rather anomolous, since one *can* have colons in
867 ordinary lsearch keys. However, making the change in all cases is
868 incompatible and would probably break a number of configurations.
870 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
873 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
874 conversion specification without a maximum field width, thereby enabling
875 a rogue spamd server to cause a buffer overflow. While nobody in their
876 right mind would setup Exim to query an untrusted spamd server, an
877 attacker that gains access to a server running spamd could potentially
878 exploit this vulnerability to run arbitrary code as the Exim user.
880 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
881 $primary_hostname instead of what libspf2 thinks the hosts name is.
883 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
884 a directory entry by the name of the lookup key. Previously, if a
885 symlink pointed to a non-existing file or a file in a directory that
886 Exim lacked permissions to read, a lookup for a key matching that
887 symlink would fail. Now it is enough that a matching directory entry
888 exists, symlink or not. (Bugzilla 503.)
890 PH/03 The body_linecount and body_zerocount variables are now exported in the
893 PH/04 Added the $dnslist_matched variable.
895 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
896 This means they are set thereafter only if the connection becomes
899 PH/06 Added the client_condition to authenticators so that some can be skipped
900 by clients under certain conditions.
902 PH/07 The error message for a badly-placed control=no_multiline_responses left
903 "_responses" off the end of the name.
905 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
907 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
908 (without spaces) instead of just copying the configuration text.
910 PH/10 Added the /noupdate option to the ratelimit ACL condition.
912 PH/11 Added $max_received_linelength.
914 PH/12 Added +ignore_defer and +include_defer to host lists.
916 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
917 way in which PCRE > 7.0 is built.
919 PH/14 Implemented queue_only_load_latch.
921 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
922 MAIL command. The effect was to mangle the value on 64-bit systems.
924 PH/16 Another patch from the Sieve maintainer.
926 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
928 PH/18 If a system quota error occurred while trying to create the file for
929 a maildir delivery, the message "Mailbox is full" was not appended to the
930 bounce if the delivery eventually timed out. Change 4.67/27 below applied
931 only to a quota excession during the actual writing of the file.
933 PH/19 It seems that peer DN values may contain newlines (and other non-printing
934 characters?) which causes problems in log lines. The DN values are now
935 passed through string_printing() before being added to log lines.
937 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
938 and InterBase are left for another time.)
940 PH/21 Added message_body_newlines option.
942 PH/22 Guard against possible overflow in moan_check_errorcopy().
944 PH/23 POSIX allows open() to be a macro; guard against that.
946 PH/24 If the recipient of an error message contained an @ in the local part
947 (suitably quoted, of course), incorrect values were put in $domain and
948 $local_part during the evaluation of errors_copy.
954 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
955 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
958 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
959 issue a MAIL command.
961 PH/02 In an ACL statement such as
963 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
965 if a client was not listed at all, or was listed with a value other than
966 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
967 the condition was not true (as it should be), so access was not denied.
968 The bug was that the ! inversion was incorrectly passed on to the second
969 item. This has been fixed.
971 PH/03 Added additional dnslists conditions == and =& which are different from
972 = and & when the dns lookup returns more than one IP address.
974 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
975 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
977 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
978 FSYNC, which compiles an option called disable_fsync that allows for
979 bypassing fsync(). The documentation is heavily laced with warnings.
981 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
983 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
984 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
985 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
986 including adding "make clean"; (3) Added -fPIC when compiling the test
987 dynamically loaded module, to get rid of a warning.
989 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
990 message fails, move_frozen_messages = true and ignore_bounce_errors_after
991 = 0s. The bug is otherwise harmless.
993 PH/07 There was a bug in the dovecot authenticator such that the value of
994 $auth1 could be overwritten, and so not correctly preserved, after a
995 successful authentication. This usually meant that the value preserved by
996 the server_setid option was incorrect.
998 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
1000 PH/09 Installed PCRE release 7.0.
1002 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
1003 run for batched SMTP input. It is now run at the start of every message
1004 in the batch. While fixing this I discovered that the process information
1005 (output by running exiwhat) was not always getting set for -bs and -bS
1006 input. This is fixed, and it now also says "batched" for BSMTP.
1008 PH/11 Added control=no_pipelining.
1010 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
1011 patch, slightly modified), and move the expansion of helo_data till after
1012 the connection is made in the smtp transport (so it can use these
1015 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
1017 PH/14 Added log_selector = +pid.
1019 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
1021 PH/16 Add ${if forany and ${if forall.
1023 PH/17 Added dsn_from option to vary the From: line in DSNs.
1025 PH/18 Flush SMTP output before performing a callout, unless control =
1026 no_callout_flush is set.
1028 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
1029 was true (the default) a successful delivery failed to delete the retry
1030 item, thus causing premature timeout of the address. The bug is now
1033 PH/20 Added hosts_avoid_pipelining to the smtp transport.
1035 PH/21 Long custom messages for fakedefer and fakereject are now split up
1036 into multiline reponses in the same way that messages for "deny" and
1037 other ACL rejections are.
1039 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
1040 with slight modification.
1042 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
1043 draft, changing the syntax and factoring some duplicate code".
1045 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
1046 for deliveries of the second and subsequent messages over the same SMTP
1049 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
1050 ${reduce, with only minor "tidies".
1052 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
1054 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
1055 expansion side effects.
1057 PH/27 When a message times out after an over-quota error from an Exim-imposed
1058 quota, the bounce message says "mailbox is full". This message was not
1059 being given when it was a system quota that was exceeded. It now should
1062 MH/03 Made $recipients available in local_scan(). local_scan() already has
1063 better access to the recipient list through recipients_list[], but
1064 $recipients can be useful in postmaster-provided expansion strings.
1066 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
1067 in the case of a MAIL command with additional options following the
1068 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
1069 were accidentally chopped off.
1071 PH/29 SMTP synchronization checks are implemented when a command is read -
1072 there is a check that no more input is waiting when there shouldn't be
1073 any. However, for some commands, a delay in an ACL can mean that it is
1074 some time before the response is written. In this time, more input might
1075 arrive, invalidly. So now there are extra checks after an ACL has run for
1076 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
1077 pipelining has not been advertised.
1079 PH/30 MH's patch to allow iscntrl() characters to be list separators.
1081 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
1082 returned in the SMTP response when smtp_return_error_details was false.
1083 This has been fixed.
1085 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
1086 instead of the C I/O that was originally supplied, because problems were
1087 reported on Solaris.
1089 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
1090 Exim which did not show up earlier: it was assuming that a call to
1091 SSL_CTX_set_info_callback() might give an error value. In fact, there is
1092 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
1093 was a macro that became an assignment, so it seemed to work. This has
1094 changed to a proper function call with a void return, hence the compile
1095 error. Exim's code has been fixed.
1097 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
1100 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
1102 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
1104 PH/37 If a message is not accepted after it has had an id assigned (e.g.
1105 because it turns out to be too big or there is a timeout) there is no
1106 "Completed" line in the log. When some messages of this type were
1107 selected by exigrep, they were listed as "not completed". Others were
1108 picked up by some special patterns. I have improved the selection
1109 criteria to be more general.
1111 PH/38 The host_find_failed option in the manualroute router can now be set
1112 to "ignore", to completely ignore a host whose IP address cannot be
1113 found. If all hosts are ignored, the behaviour is controlled by the new
1114 host_all_ignored option.
1116 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
1117 homing or because of multiple MX records with /mx) generated more than
1118 one IP address, and the following item turned out to be the local host,
1119 all the secondary addresses of the first item were incorrectly removed
1120 from the list, along with the local host and any following hosts (which
1121 is what is supposed to happen).
1123 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
1124 whoever called Exim into the -H file. In the case of the daemon it was
1125 behaving confusingly. When first started, it used values for whoever
1126 started the daemon, but after a SIGHUP it used the Exim user (because it
1127 calls itself on a restart). I have changed the code so that it now always
1130 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
1131 message are rejected with the same error (e.g. no authentication or bad
1132 sender address), and a DATA command is nevertheless sent (as can happen
1133 with PIPELINING or a stupid MUA), the error message that was given to the
1134 RCPT commands is included in the rejection of the DATA command. This is
1135 intended to be helpful for MUAs that show only the final error to their
1138 PH/42 Another patch from the Sieve maintainer.
1140 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
1141 Eximstats - Fixed some broken HTML links and added missing column headers
1143 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
1144 columns for Rejects, Temp Rejects, Ham, and Spam rows.
1146 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
1148 PH/43 Yet another patch from the Sieve maintainer.
1150 PH/44 I found a way to check for a TCP/IP connection going away before sending
1151 the response to the final '.' that terminates a message, but only in the
1152 case where the client has not sent further data following the '.'
1153 (unfortunately, this is allowed). However, in many cases there won't be
1154 any further data because there won't be any more messages to send. A call
1155 to select() can be used: if it shows that the input is "ready", there is
1156 either input waiting, or the socket has been closed. An attempt to read
1157 the next input character can distinguish the two cases. Previously, Exim
1158 would have sent an OK response which the client would never have see.
1159 This could lead to message repetition. This fix should cure that, at
1160 least in a lot of common cases.
1162 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
1163 advertised in response to EHLO.
1169 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
1170 fixed by 4.65/MH/01 (is this a record?) are fixed:
1172 (i) An empty string was always treated as zero by the numeric comparison
1173 operators. This behaviour has been restored.
1175 (ii) It is documented that the numeric comparison operators always treat
1176 their arguments as decimal numbers. This was broken in that numbers
1177 starting with 0 were being interpreted as octal.
1179 While fixing these problems I realized that there was another issue that
1180 hadn't been noticed. Values of message_size_limit (both the global option
1181 and the transport option) were treated as octal if they started with 0.
1182 The documentation was vague. These values are now always treated as
1183 decimal, and I will make that clear in the documentation.
1189 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
1190 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
1193 MH/01 Don't check that the operands of numeric comparison operators are
1194 integers when their expansion is in "skipping" mode (fixes bug
1195 introduced by 4.64-PH/07).
1197 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
1198 child addresses, Exim now panics and dies. Previously, because the count
1199 is held in a short int, deliveries were likely to be lost. As such a
1200 large number of recipients for a single message is ridiculous
1201 (performance will be very, very poor), I have chosen to impose a limit
1202 rather than extend the field.
1208 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
1209 leftover -K file (the existence of which was triggered by #402).
1210 While we were at it, introduced process PID as part of the -K
1211 filename. This should rule out race conditions when creating
1214 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
1215 processing considerably. Previous code took too long for large mails,
1216 triggering a timeout which in turn triggers #401.
1218 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
1219 in the DK code in transports.c. sendfile() is not really portable,
1220 hence the _LINUX specificness.
1222 TF/01 In the add_headers option to the mail command in an Exim filter,
1223 there was a bug that Exim would claim a syntax error in any
1224 header after the first one which had an odd number of characters
1227 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
1228 callout verification, Exim cached a "reject" for the entire domain. This
1229 is correct for most verifications, but it is not correct for a recipient
1230 verification with use_sender or use_postmaster set, because in that case
1231 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
1232 case of MAIL FROM:<> rejection from other early rejections (e.g.
1233 rejection of HELO). When verifying a recipient using a non-null MAIL
1234 address, the cache is ignored if it shows MAIL FROM:<> rejection.
1235 Whatever the result of the callout, the value of the domain cache is
1236 left unchanged (for any other kind of callout, getting as far as trying
1237 RCPT means that the domain itself is ok).
1239 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
1242 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
1243 manifest itself as EPIPE rather than ECONNECT. When tidying away a
1244 session, the daemon ignores ECONNECT errors and logs others; it now
1245 ignores EPIPE as well.
1247 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
1248 (quoted-printable decoding).
1250 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
1251 later the small subsequent patch to fix an introduced bug.
1253 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
1255 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
1257 PH/08 An error is now given if message_size_limit is specified negative.
1259 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
1260 to be given (somewhat) arbitrary names.
1262 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
1265 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
1266 miscellaneous code fixes
1268 PH/10 Added the log_reject_target ACL modifier to specify where to log
1271 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
1272 hostname. This is wrong, because it relates to the incoming message (and
1273 probably the interface on which it is arriving) and not to the outgoing
1274 callout (which could be using a different interface). This has been
1275 changed to use the value of the helo_data option from the smtp transport
1276 instead - this is what is used when a message is actually being sent. If
1277 there is no remote transport (possible with a router that sets up host
1278 addresses), $smtp_active_hostname is used.
1280 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
1281 tweaks were necessary in order to get it to work (see also 21 below):
1282 (a) The code assumed that strncpy() returns a negative number on buffer
1283 overflow, which isn't the case. Replaced with Exim's string_format()
1285 (b) There were several signed/unsigned issues. I just did the minimum
1286 hacking in of casts. There is scope for a larger refactoring.
1287 (c) The code used strcasecmp() which is not a standard C function.
1288 Replaced with Exim's strcmpic() function.
1289 (d) The code set only $1; it now sets $auth1 as well.
1290 (e) A simple test gave the error "authentication client didn't specify
1291 service in request". It would seem that Dovecot has changed its
1292 interface. Fortunately there's a specification; I followed it and
1293 changed what the client sends and it appears to be working now.
1295 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
1298 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
1299 address A is aliased to B and C, where B exists and C does not. Without
1300 -v the output is "A verified" because verification stops after a
1301 successful redirection if more than one address is generated. However,
1302 with -v the child addresses are also verified. Exim was outputting "A
1303 failed to verify" and then showing the successful verification for C,
1304 with its parentage. It now outputs "B failed to verify", showing B's
1305 parentage before showing the successful verification of C.
1307 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
1308 look up a TXT record in a specific list after matching in a combined
1311 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
1312 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
1313 they consult the DNS. I had assumed they would set it the way they
1314 wanted; and indeed my experiments on Linux seem to show that in some
1315 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
1316 To be on the safe side, however, I have now made the interface to
1317 host_find_byname() similar to host_find_bydns(), with an argument
1318 containing the DNS resolver options. The host_find_byname() function now
1319 sets these options at its start, just as host_find_bydns() does. The smtp
1320 transport options dns_qualify_single and dns_search_parents are passed to
1321 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
1322 of host_find_byname() use the default settings of RES_DEFNAMES
1323 (qualify_single) but not RES_DNSRCH (search_parents).
1325 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
1326 spool_read_header() do less string testing, by means of a preliminary
1327 switch on the second character of optional "-foo" lines. (This is
1328 overdue, caused by the large number of possibilities that now exist.
1329 Originally there were few.) While I was there, I also converted the
1330 str(n)cmp tests so they don't re-test the leading "-" and the first
1331 character, in the hope this might squeeze out yet more improvement.
1333 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
1334 flag allowing group syntax was set by the header_syntax check but not
1335 turned off, possible causing trouble later; (2) The flag was not being
1336 set at all for the header_verify test, causing "group"-style headers to
1337 be rejected. I have now set it in this case, and also caused header_
1338 verify to ignore an empty address taken from a group. While doing this, I
1339 came across some other cases where the code for allowing group syntax
1340 while scanning a header line wasn't quite right (mostly, not resetting
1341 the flag correctly in the right place). These bugs could have caused
1342 trouble for malformed header lines. I hope it is now all correct.
1344 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
1345 with the "reply" argument non-NULL. The code, however (which originally
1346 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
1347 but it didn't always do it. This confused somebody who was copying the
1348 code for some other use. I have removed all the tests.
1350 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
1351 feature that was used to support insecure browsers during the U.S. crypto
1352 embargo. It requires special client support, and Exim is probably the
1353 only MTA that supported it -- and would never use it because real RSA is
1354 always available. This code has been removed, because it had the bad
1355 effect of slowing Exim down by computing (never used) parameters for the
1356 RSA_EXPORT functionality.
1358 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
1359 authenticator to fail if there's a tab character in the incoming data
1360 (there should never be unless someone is messing about, as it's supposed
1361 to be base64-encoded). Also added, on Timo's advice, the "secured" option
1362 if the connection is using TLS or if the remote IP is the same as the
1363 local IP, and the "valid-client-cert option" if a client certificate has
1366 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
1367 authenticators. This can be used for authorization after authentication
1368 succeeds. (In the case of plaintext, it servers for both authentication
1371 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
1372 if any retry times were supplied.
1374 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
1375 connection, where there is no client IP address to check. In this
1376 situation, the verify now always succeeds.
1378 PH/25 Applied John Jetmore's -Mset patch.
1380 PH/26 Added -bem to be like -Mset, but loading a message from a file.
1382 PH/27 In a string expansion for a processed (not raw) header when multiple
1383 headers of the same name were present, leading whitespace was being
1384 removed from all of them, but trailing whitespace was being removed only
1385 from the last one. Now trailing whitespace is removed from each header
1386 before concatenation. Completely empty headers in a concatenation (as
1387 before) are ignored.
1389 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
1390 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
1392 PH/29 [Removed. This was a change that I later backed out, and forgot to
1393 correct the ChangeLog entry (that I had efficiently created) before
1394 committing the later change.]
1396 PH/30 Exim was sometimes attempting to deliver messages that had suffered
1397 address errors (4xx response to RCPT) over the same connection as other
1398 messages routed to the same hosts. Such deliveries are always "forced",
1399 so retry times are not inspected. This resulted in far too many retries
1400 for the affected addresses. The effect occurred only when there were more
1401 hosts than the hosts_max_try setting in the smtp transport when it had
1402 the 4xx errors. Those hosts that it had tried were not added to the list
1403 of hosts for which the message was waiting, so if all were tried, there
1404 was no problem. Two fixes have been applied:
1406 (i) If there are any address or message errors in an SMTP delivery, none
1407 of the hosts (tried or untried) are now added to the list of hosts
1408 for which the message is waiting, so the message should not be a
1409 candidate for sending over the same connection that was used for a
1410 successful delivery of some other message. This seems entirely
1411 reasonable: after all the message is NOT "waiting for some host".
1412 This is so "obvious" that I'm not sure why it wasn't done
1413 previously. Hope I haven't missed anything, but it can't do any
1414 harm, as the worst effect is to miss an optimization.
1416 (ii) If, despite (i), such a delivery is accidentally attempted, the
1417 routing retry time is respected, so at least it doesn't keep
1418 hammering the server.
1420 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
1421 in ${readsocket because some servers need this prod.
1423 PH/32 Added some extra debug output when updating a wait-xxx database.
1425 PH/33 The hint "could be header name not terminated by colon", which has been
1426 given for certain expansion errors for a long time, was not being given
1427 for the ${if def:h_colon_omitted{... case.
1429 PH/34 The spec says: "With one important exception, whenever a domain list is
1430 being scanned, $domain contains the subject domain." There was at least
1431 one case where this was not true.
1433 PH/35 The error "getsockname() failed: connection reset by peer" was being
1434 written to the panic log as well as the main log, but it isn't really
1435 panic-worthy as it just means the connection died rather early on. I have
1436 removed the panic log writing for the ECONNRESET error when getsockname()
1439 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
1440 runs only) independently of the message's sender address. This meant
1441 that, if the 4xx error was in fact related to the sender, a different
1442 message to the same recipient with a different sender could confuse
1443 things. In particualar, this can happen when sending to a greylisting
1444 server, but other circumstances could also provoke similar problems.
1445 I have changed the default so that the retry time for these errors is now
1446 based a combination of the sender and recipient addresses. This change
1447 can be overridden by setting address_retry_include_sender=false in the
1450 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
1451 remote server are returned as part of bounce messages. This was not
1452 happening for LMTP over a pipe (the lmtp transport), but now it is the
1453 same for both kinds of LMTP.
1455 PH/38 Despite being documented as not happening, Exim was rewriting addresses
1456 in header lines that were in fact CNAMEs. This is no longer the case.
1458 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
1459 and queue runs started by the daemon processed all messages. This has
1460 been fixed so that -R and -S can now usefully be given with -q<time>.
1462 PH/40 Import PCRE release 6.7 (fixes some bugs).
1464 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
1466 PH/42 Give an error if -q is specified more than once.
1468 PH/43 Renamed the variables $interface_address and $interface_port as
1469 $received_ip_address and $received_port, to make it clear that these
1470 values apply to message reception, and not to the outgoing interface when
1471 a message is delivered. (The old names remain recognized, of course.)
1473 PH/44 There was no timeout on the connect() call when using a Unix domain
1474 socket in the ${readsocket expansion. There now is.
1476 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
1477 be meaningful with "accept".
1479 SC/01 Eximstats V1.43
1480 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
1482 SC/02 Eximstats V1.44
1483 Use a glob alias rather than an array ref in the generated
1484 parser. This improves both readability and performance.
1486 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
1487 Collect SpamAssassin and rejection statistics.
1488 Don't display local sender or destination tables unless
1489 there is data to show.
1490 Added average volumes into the top table text output.
1492 SC/04 Eximstats V1.46
1493 Collect data on the number of addresses (recipients)
1494 as well as the number of messages.
1496 SC/05 Eximstats V1.47
1497 Added 'Message too big' to the list of mail rejection
1498 reasons (thanks to Marco Gaiarin).
1500 SC/06 Eximstats V1.48
1501 Mainlog lines which have GMT offsets and are too short to
1502 have a flag are now skipped.
1504 SC/07 Eximstats V1.49 (Alain Williams)
1505 Added the -emptyok flag.
1507 SC/08 Eximstats V1.50
1508 Fixes for obtaining the IP address from reject messages.
1510 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
1511 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
1512 whitesspace changes from 4.64-PH/27
1514 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
1517 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
1518 are found, allow negative numbers in numeric criteria)
1520 JJ/06 exipick.20061117.2, added new $message_body_missing variable
1522 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
1523 to match changes made in 4.64-PH/43
1525 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
1527 PH/47 Put in an explicit test for a DNS lookup of an address record where the
1528 "domain" is actually an IP address, and force a failure. This locks out
1529 those revolvers/nameservers that support "A-for-A" lookups, in
1530 contravention of the specifications.
1532 PH/48 When a host name was looked up from an IP address, and the subsequent
1533 forward lookup of the name timed out, the host name was left in
1534 $sender_host_name, contrary to the specification.
1536 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
1537 restricted to single-key lookups, Exim was not diagnosing an error if
1538 * or *@ was used with a query-style lookup.
1540 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
1542 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
1543 long ago, but noone interested enough thought of it. Let's just say that
1544 the "1.1" means that there are some new functions that weren't there at
1545 some point in the past.
1547 PH/51 Error processing for expansion failure of helo_data from an smtp
1548 transport during callout processing was broken.
1550 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
1551 tested/used via the -bh/-bhc/-bs options.
1553 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
1554 bug, fixed in subsequent PCRE releases).
1556 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
1557 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
1559 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
1565 SC/01 Use a glob alias rather than an array ref in eximstats generated
1566 parser. This improves both readability and performance.
1568 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
1569 Don't display local sender or destination tables in eximstats unless
1570 there is data to show.
1571 Added average volumes into the eximstats top table text output.
1573 SC/03 Collect data on the number of addresses (recipients) as well
1574 as the number of messages in eximstats.
1576 TF/01 Correct an error in the documentation for the redirect router. Exim
1577 does (usually) call initgroups() when daemonizing.
1579 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
1580 with consistent privilege compared to when running as a daemon.
1582 TF/03 Note in the spec that $authenticated_id is not set for local
1583 submissions from trusted users.
1585 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
1586 Thanks to Dean Brooks <dean@iglou.com> for the patch.
1588 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
1589 by adding some example configuration directives to the default
1590 configuration file. A little bit of work is required to uncomment the
1591 directives and define how usernames and passwords are checked, but
1592 there is now a framework to start from.
1594 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
1595 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
1596 without this. I don't know how relevant this is to other LDAP libraries.
1598 PH/02 Add the verb name to the "unknown ACL verb" error.
1600 PH/03 Magnus Holmgren's patch for filter_prepend_home.
1602 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
1604 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
1605 directory not expanded when it should be if an expanded home directory
1606 was set for the address (which is overridden by the transport).
1608 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
1611 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
1612 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
1613 because it is too late at that time, and has no effect.
1615 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
1616 security issue with \' (bugzilla #107). I could not use the
1617 PQescapeStringConn() function, because it needs a PGconn value as one of
1620 PH/08 When testing addresses using -bt, indicate those final addresses that
1621 are duplicates that would not cause an additional delivery. At least one
1622 person was confused, thinking that -bt output corresponded to deliveries.
1623 (Suppressing duplicates isn't a good idea as you lose the information
1624 about possibly different redirections that led to the duplicates.)
1626 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
1627 systems where poll() doesn't work, in particular OS X.
1629 PH/10 Added more information to debugging output for retry time not reached.
1631 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
1632 operations in malware.c.
1634 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
1637 PH/13 If write_rejectlog was set false when logging was sent to syslog with
1638 syslog_duplication set false, log lines that would normally be written
1639 both the the main log and to the reject log were not written to syslog at
1642 PH/14 In the default configuration, change the use of "message" in ACL warn
1643 statements to "add_header".
1645 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
1646 not followed by a command (e.g. "seen endif").
1648 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
1649 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
1652 PH/17 Added extra conditions to the default value of delay_warning_condition
1656 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
1657 { match{$h_precedence:}{(?i)bulk|list|junk} } \
1658 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
1661 The Auto-Submitted: and various List- headers are standardised, whereas I
1662 don't think Precedence: ever was.
1664 PH/18 Refactored debugging code in route_finduser() to show more information,
1665 in particular, the error code if getpwnam() issues one.
1667 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
1668 This is apparently needed in addition to the PH/07 change above to avoid
1669 any possible encoding problems.
1671 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
1672 but not after initializing Perl.
1674 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
1675 output them only if debugging. By default they are written stderr,
1676 apparently, which is not desirable.
1678 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
1681 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
1684 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
1686 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
1687 authenticated or an ident call has been made. Suppress the default
1688 values for $authenticated_id and $authenticated_sender (but permit -oMai
1689 and -oMas) when testing with -bh.
1691 PH/24 Re-jigged the order of the tests in the default configuration so that the
1692 tests for valid domains and recipients precede the DNS black list and CSA
1693 tests, on the grounds that those ones are more expensive.
1695 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
1696 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
1697 This bug exists in every version of Exim that I still have, right back to
1700 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
1701 However, an attempt to turn on case-sensitivity in a regex key by
1702 including (?-i) didn't work because the subject string was already
1703 lowercased, and the effects were non-intuitive. It turns out that a
1704 one-line patch can be used to allow (?-i) to work as expected.
1710 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
1711 other effects) broke the use of negated acl sub-conditions.
1713 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
1716 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
1717 "Deny" causes Exim to reject the incoming connection with a 554 error.
1718 Unfortunately, if there is a major crisis, such as a disk failure,
1719 tcp-wrappers gives "deny", whereas what one would like would be some
1720 kind of temporary error. A kludge has been added to help with this.
1721 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
1722 554 error is used if errno is still zero or contains ENOENT (which occurs
1723 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
1726 PH/03 Add -lutil to the default FreeBSD LIBS setting.
1728 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
1729 errors. Otherwise a message that provokes a temporary error (when other
1730 messages do not) can cause a whole host to time out.
1732 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
1733 addresses were routed directly to files or pipes from a redirect router.
1734 File deliveries just didn't batch; pipe deliveries might have suffered
1737 PH/06 A failure to get a lock for a hints database would erroneously always say
1738 "Failed to get write lock", even when it was really a read lock.
1740 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
1741 of 0600. This has been changed to use the value of the lockfile_mode
1742 option (which defaults to 0600).
1744 PH/08 Applied small patch from the Sieve maintainer.
1746 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
1747 folder from quota calculations, a direct delivery into this folder messed
1748 up the contents of the maildirsize file. This was because the regex was
1749 used only to exclude .Trash (or whatever) when the size of the mailbox
1750 was calculated. There was no check that a delivery was happening into an
1751 excluded directory. This bug has been fixed by ignoring all quota
1752 processing for deliveries into excluded directories.
1754 PH/10 Added the maildirfolder_create_regex option to appendfile.
1760 PH/01 The code for finding all the local interface addresses on a FreeBSD
1761 system running IPv6 was broken. This may well have applied to all BSD
1762 systems, as well as to others that have similar system calls. The broken
1763 code found IPv4 interfaces correctly, but gave incorrect values for the
1764 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
1765 that it would not match correctly against @[] and not recognize the IPv6
1768 PH/02 The ipliteral router was not recognizing addresses of the form user@
1769 [ipv6:....] because it didn't know about the "ipv6:" prefix.
1771 PH/03 Added disable_ipv6.
1773 PH/04 Changed $reply_address to use the raw form of the headers instead of the
1774 decoded form, because it is most often used to construct To: headers
1775 lines in autoreplies, and the decoded form may well be syntactically
1776 invalid. However, $reply_address has leading white space removed, and all
1777 newlines turned into spaces so that the autoreply transport does not
1780 PH/05 If group was specified without a user on a router, and no group or user
1781 was specified on a transport, the group from the router was ignored.
1783 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
1784 for visible compile-time settings that can be used to change these
1785 numbers, for those that want even more. Backwards compatibility with old
1786 spool files has been maintained. However, going back to a previous Exim
1787 release will lost any variables that are in spool files.
1789 PH/07 Two small changes when running in the test harness: increase delay when
1790 passing a TCP/IP connection to a new process, in case the original
1791 process has to generate a bounce, and remove special handling of
1792 127.0.0.2 (sic), which is no longer necessary.
1794 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
1795 be the same on different OS.
1797 PH/09 Moved a debug statement in filter processing to avoid a race problem when
1800 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
1801 whether --show-vars was specified or not
1803 JJ/02 exipick: Added support for new ACL variable spool format introduced
1806 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
1807 syntactically invalid From: or Reply-to: line, and a filter used this to
1808 generate an autoreply, and therefore failed to obtain an address for the
1809 autoreply, Exim could try to deliver to a non-existent relative file
1810 name, causing unrelated and misleading errors. What now happens is that
1811 it logs this as a hard delivery error, but does not attempt to create a
1814 PH/11 The exinext utility has a -C option for testing purposes, but although
1815 the given file was scanned by exinext itself; it wasn't being passed on
1816 when Exim was called.
1818 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
1819 an end-of-file indication when reading a command response.
1821 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
1822 compiled. In many other places in Exim, IPv6 addresses are always
1823 recognized, so I have changed this. It also means that IPv4 domain
1824 literals of the form [IPV4:n.n.n.n] are now always recognized.
1826 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
1827 used if the router is not running as root, for example, when verifying at
1828 ACL time, or when using -bh. The debugging output from this situation was
1829 non-existent - all you got was a failure to exec. I have made two
1832 (a) Failures to set uid/gid, the current directory, or a process leader
1833 in a subprocess such as that created by queryprogram now generate
1834 suitable debugging ouput when -d is set.
1836 (b) The queryprogram router detects when it is not running as root,
1837 outputs suitable debugging information if -d is set, and then runs
1838 the subprocess without attempting to change uid/gid.
1840 PH/15 Minor change to Makefile for building test_host (undocumented testing
1843 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1844 additional section of a DNS packet that returns MX or SRV records.
1845 Instead, it always explicitly searches for A/AAAA records. This avoids
1846 major problems that occur when a DNS server includes only records of one
1847 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1848 fixed another bug: if SRV records were looked up and the corresponding
1849 address records were *not* found in the additional section, the port
1850 values from the SRV records were lost.
1852 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1853 using the correct key (the original address) when searching the retry
1854 rules in order to find which one to use for generating the retry hint.
1856 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1857 adding the default one. Similarly, if it contains a Reply-To: header, the
1858 errors_reply_to option, if set, is not used.
1860 PH/19 When calculating a retry time, Exim used to measure the "time since
1861 failure" by looking at the "first failed" field in the retry record. Now
1862 it does not use this if it is later than than the arrival time of the
1863 message. Instead it uses the arrival time. This makes for better
1864 behaviour in cases where some deliveries succeed, thus re-setting the
1865 "first failed" field. An example is a quota failure for a huge message
1866 when small messages continue to be delivered. Without this change, the
1867 "time since failure" will always be short, possible causing more frequent
1868 delivery attempts for the huge message than are intended.
1869 [Note: This change was subsequently modified - see PH/04 for 4.62.]
1871 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1872 $1, $2, $3) because the numerical variables can be reset during some
1873 expansion items (e.g. "match"), thereby losing the authentication data.
1875 PH/21 Make -bV show the size of off_t variables so that the test suite can
1876 decide whether to run tests for quotas > 2G.
1878 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1879 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1880 filecount value is greater than 2G or if a quota value is greater than 2G
1881 on a system where the size of off_t is not greater than 4, a panic error
1884 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1885 never match. The debug and -bh output now contains an explicit error
1886 message indicating a malformed IPv4 address or mask.
1888 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1889 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1890 PH/23 above applies.
1892 PH/25 Do not write to syslog when running in the test harness. The only
1893 occasion when this arises is a failure to open the main or panic logs
1894 (for which there is an explicit test).
1896 PH/26 Added the /no_tell option to "control=freeze".
1898 PH/27 If a host name lookup failed very early in a connection, for example, if
1899 the IP address matched host_lookup and the reverse lookup yielded a name
1900 that did not have a forward lookup, an error message of the form "no IP
1901 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1902 could be logged. Now it outputs the IP address instead of "NULL".
1904 PH/28 An enabling patch from MH: add new function child_open_exim2() which
1905 allows the sender and the authenticated sender to be set when
1906 submitting a message from within Exim. Since child_open_exim() is
1907 documented for local_scan(), the new function should be too.
1909 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1910 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1911 results in an empty string is now treated as unset.
1913 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1915 PH/31 Added sender_verify_fail logging option.
1917 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1918 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1919 tidied the source and removed it altogether.
1921 PH/33 When a queue run was abandoned because the load average was too high, a
1922 log line was always written; now it is written only if the queue_run log
1923 selector is set. In addition, the log line for abandonment now contains
1924 information about the queue run such as the pid. This is always present
1925 in "start" and "stop" lines but was omitted from the "abandon" line.
1927 PH/34 Omit spaces between a header name and the colon in the error message that
1928 is given when verify = headers_syntax fails (if there are lots of them,
1929 the message gets confusing).
1931 PH/35 Change the default for dns_check_names_pattern to allow slashes within
1932 names, as there are now some PTR records that contain slashes. This check
1933 is only to protect against broken name servers that fall over on strange
1934 characters, so the fact that it applies to all lookups doesn't matter.
1936 PH/36 Now that the new test suite is complete, we can remove some of the
1937 special code in Exim that was needed for the old test suite. For example,
1938 sorting DNS records because real resolvers return them in an arbitrary
1939 order. The new test suite's fake resolver always returns records in the
1942 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1943 bounces) except when queue_only is set, to avoid logging races between
1944 the different processes.
1946 PH/38 Panic-die if .include specifies a non-absolute path.
1948 PH/39 A tweak to the "H" retry rule from its user.
1950 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1951 a label. They prevented compilation on older perls.
1953 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1954 a warning to be raised on newish perls.
1956 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1957 on queue. Changes to match documented behaviour of showing count of
1958 messages matching specified criteria.
1960 PH/40 Changed the default ident timeout from 30s to 5s.
1962 PH/41 Added support for the use of login_cap features, on those BSD systems
1963 that have them, for controlling the resources used by pipe deliveries.
1965 PH/42 The content-scanning code uses fopen() to create files in which to put
1966 message data. Previously it was not paying any attention to the mode of
1967 the files. Exim runs with umask(0) because the rest of the code creates
1968 files with open(), and sets the required mode explicitly. Thus, these
1969 files were ending up world-writeable. This was not a big issue, because,
1970 being within the spool directory, they were not world-accessible. I have
1971 created a function called modefopen, which takes an additional mode
1972 argument. It sets umask(777), creates the file, chmods it to the required
1973 mode, then resets the umask. All the relevant calls to fopen() in the
1974 content scanning code have been changed to use this function.
1976 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1977 to 24 hours. This avoids potential overflow problems when processing G
1978 and H retry rules. I suspect nobody ever tinkers with this value.
1980 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1982 PH/45 When the plaintext authenticator is running as a client, the server's
1983 challenges are checked to ensure they are valid base64 strings. By
1984 default, the authentication attempt is cancelled if an invalid string is
1985 received. Setting client_ignore_invalid_base64 true ignores these errors.
1986 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1987 they are received. Thus, the responses can be made to depend on the
1988 challenges. If an invalid string is ignored, an empty string is placed in
1991 PH/46 Messages that are created by the autoreply transport now contains a
1992 References: header, in accordance with RFCs 2822 and 3834.
1994 PH/47 Added authenticated_sender_force to the smtp transport.
1996 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1998 PH/49 Installed latest patch from the Sieve maintainer.
2000 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
2001 was also set, the appendfile transport was unnecessarily scanning a
2002 directory of message files (e.g. for maildir delivery) to find the count
2003 of files (along with the size), even though it did not need this
2004 information. It now does the scan only if it needs to find either the
2005 size of the count of files.
2007 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
2009 PH/52 Two bugs concerned with error handling when the smtp transport is
2012 (i) Exim was not creating retry information for temporary errors given
2013 for individual recipients after the DATA command when the smtp transport
2014 was used in LMTP mode. This meant that they could be retried too
2015 frequently, and not timed out correctly.
2017 (ii) Exim was setting the flag that allows error details to be returned
2018 for LMTP errors on RCPT commands, but not for LMTP errors for individual
2019 recipients that were returned after the DATA command.
2021 PH/53 This is related to PH/52, but is more general: for any failing address,
2022 when detailed error information was permitted to be returned to the
2023 sender, but the error was temporary, then after the final timeout, only
2024 "retry timeout exceeded" was returned. Now it returns the full error as
2025 well as "retry timeout exceeded".
2027 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
2028 do this, and (what is worse) MTAs that accept it.
2030 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
2031 will now be deprecated.
2033 PH/56 New os.c-cygwin from the Cygwin maintainer.
2035 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
2036 formats (previously only available in exim formats via -bpr, -bpru,
2037 and -bpra. Now also available in native and exiqgrep formats)
2039 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
2040 with very large, slow to parse queues
2042 JJ/08 exipick: added ! as generic prefix to negate any criteria format
2044 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
2046 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
2047 responses to authentication challenges, though it was showing the
2048 challenges; (ii) I've removed the CR characters from the debug output for
2051 PH/58 Allow for the insertion of a newline as well as a space when a string
2052 is turned into more than one encoded-word during RFC 2047 encoding. The
2053 Sieve code now uses this.
2055 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
2056 data_4xx, lost_connection, tls_required.
2058 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
2059 message was being sent as an SMTP response.
2061 PH/61 Add -l and -k options to exicyclog.
2063 PH/62 When verifying, if an address was redirected to one new address, so that
2064 verification continued, and the new address failed or deferred after
2065 having set something in $address_data, the value of $address_data was not
2066 passed back to the ACL. This was different to the case when no
2067 redirection occurred. The value is now passed back in both cases.
2069 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
2070 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
2071 use login_cap.h, so on its own it isn't the distinguishing feature. The
2072 new name refers directly to the setclassresources() function.
2074 PH/65 Added configuration files for NetBSD3.
2076 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
2078 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
2079 is preferred over IPv4.
2081 PH/68 The bounce_return_message and bounce_return_body options were not being
2082 honoured for bounces generated during the reception of non-SMTP messages.
2083 In particular, this applied to messages rejected by the ACL. This bug has
2084 been fixed. However, if bounce_return_message is true and bounce_return_
2085 body is false, the headers that are returned for a non-SMTP message
2086 include only those that have been read before the error was detected.
2087 (In the case of an ACL rejection, they have all been read.)
2089 PH/69 The HTML version of the specification is now built in a directory called
2090 spec_html instead of spec.html, because the latter looks like a path with
2091 a MIME-type, and this confuses some software.
2093 PH/70 Catch two compiler warnings in sieve.c.
2095 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
2096 function verify_get_ident() calls ip_connect() to connect a socket, but
2097 if the "connect()" function timed out, ip_connect() used to close the
2098 socket. However, verify_get_ident() also closes the socket later, and in
2099 between Exim writes to the log, which may get opened at this point. When
2100 the socket was closed in ip_connect(), the log could get the same file
2101 descriptor number as the socket. This naturally causes chaos. The fix is
2102 not to close the socket in ip_connect(); the socket should be closed by
2103 the function that creates it. There was only one place in the code where
2104 this was missing, in the iplookup router, which I don't think anybody now
2105 uses, but I've fixed it anyway.
2107 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
2108 well as to direct DNS lookups. Otherwise the handling of names in host
2109 lists is inconsistent and therefore confusing.
2115 PH/01 Two changes to the default runtime configuration:
2117 (1) Move the checks for relay_from_hosts and authenticated clients from
2118 after to before the (commented out) DNS black list checks.
2120 (2) Add control=submission to the relay_from_hosts and authenticated
2121 clients checks, on the grounds that messages accepted by these
2122 statements are most likely to be submissions.
2124 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
2126 (1) Generate an error if the third argument for the ${prvs expansion is
2129 (2) Treat a missing third argument of ${prvscheck as if it were an empty
2132 (3) Reset the variables that are obtained from the first argument of
2133 ${prvscheck and used in the second argument before leaving the code,
2134 because their memory is reclaimed, so using them afterwards may do
2137 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
2138 one (it's much easier than Tom thought :-).
2140 (5) Because of (4), we can now allow for the use of $prvscheck_result
2141 inside the third argument.
2143 PH/03 For some reason, the default setting of PATH when running a command from
2144 a pipe transport was just "/usr/bin". I have changed it to
2147 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
2148 anything to be listed in the output from -bV.
2150 PH/05 When a filter generated an autoreply, the entire To: header line was
2151 quoted in the delivery log line, like this:
2153 => >A.N.Other <ano@some.domain> <original@ddress> ...
2155 This has been changed so that it extracts the operative address. There
2156 may be more than one such address. If so, they are comma-separated, like
2159 => >ano@some.domain,ona@other.domain <original@ddress> ...
2161 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
2162 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
2163 not being looked up in the rDNS to get a host name, Exim was showing the
2164 IP address twice in Received: lines, even though the IP addresses were
2165 identical. For example:
2167 Received: from [1.2.3.4] (helo=[1.2.3.4])
2169 However, if the real host name was known, it was omitting the HELO data
2170 if it matched the actual IP address. This has been tidied up so that it
2171 doesn't show the same IP address twice.
2173 PH/07 When both +timestamp and +memory debugging was on, the value given by
2174 $tod_xxx expansions could be wrong, because the tod_stamp() function was
2175 called by the debug printing, thereby overwriting the timestamp buffer.
2176 Debugging no longer uses the tod_stamp() function when +timestamp is set.
2178 PH/08 When the original message was included in an autoreply transport, it
2179 always said "this is a copy of the message, including all the headers",
2180 even if body_only or headers_only was set. It now gives an appropriate
2183 PH/09 Applied a patch from the Sieve maintainer which:
2185 o fixes some comments
2186 o adds the (disabled) notify extension core
2187 o adds some debug output for the result of if/elsif tests
2188 o points to the current vacation draft in the documentation
2189 and documents the missing references header update
2193 o fixes a bug in processing the envelope test (when testing
2194 multiple envelope elements, the last element determinted the
2197 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
2198 Electronic Mail") by including:
2200 Auto-submitted: auto-generated
2202 in the messages that it generates (bounce messages and others, such as
2203 warnings). In the case of bounce messages for non-SMTP mesages, there was
2204 also a typo: it was using "Auto_submitted" (underscore instead of
2205 hyphen). Since every message generated by Exim is necessarily in response
2206 to another message, thes have all been changed to:
2208 Auto-Submitted: auto-replied
2210 in accordance with these statements in the RFC:
2212 The auto-replied keyword:
2214 - SHOULD be used on messages sent in direct response to another
2215 message by an automatic process,
2217 - MUST NOT be used on manually-generated messages,
2219 - MAY be used on Delivery Status Notifications (DSNs) and Message
2220 Disposition Notifications (MDNs),
2222 - MUST NOT be used on messages generated by automatic or periodic
2223 processes, except for messages which are automatic responses to
2226 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
2227 to the default Received: header definition.
2229 PH/12 Added log selector acl_warn_skipped (default on).
2231 PH/13 After a successful wildlsearch lookup, discard the values of numeric
2232 variables because (a) they are in the wrong storage pool and (b) even if
2233 they were copied, it wouldn't work properly because of the caching.
2235 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
2236 checking when decoding. Apparently there are clients that generate
2237 overlong encoded strings. Why am I not surprised?
2239 PH/15 If the first argument of "${if match_address" was not empty, but did not
2240 contain an "@" character, Exim crashed. Now it writes a panic log message
2241 and treats the condition as false.
2243 PH/16 In autoreply, treat an empty string for "once" the same as unset.
2245 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
2246 extension "envelope-auth". The code is finished and in agreement with
2247 other implementations, but there is no documentation so far and in fact,
2248 nobody wrote the draft yet. This extension is currently #undef'ed, thus
2249 not changing the active code.
2251 Print executed "if" and "elsif" statements when debugging is used. This
2252 helps a great deal to understand what a filter does.
2254 Document more things not specified clearly in RFC3028. I had all this
2255 sorted out, when out of a sudden new issues came to my mind. Oops."
2257 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
2260 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
2261 canonical form (as documented). However, after a host name lookup from
2262 the IP address, check_host() was doing a simple string comparison with
2263 addresses acquired from the DNS when checking that the found name did
2264 have the original IP as one of its addresses. Since any found IPv6
2265 addresses are likely to be in abbreviated form, the comparison could
2266 fail. Luckily, there already exists a function for doing the comparison
2267 by converting both addresses to binary, so now that is used instead of
2268 the text comparison.
2270 PH/20 There was another similar case to PH/19, when a complete host name was
2271 given in a host list; looking up its IP address could give an abbreviated
2272 form, whereas the current host's name might or might not be abbreviated.
2273 The same fix has been applied.
2279 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
2280 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
2283 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
2284 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
2286 PH/03 Typo: missing ".o" in src/pcre/Makefile.
2288 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
2289 header line, restrict the check to what is listed in RFCs 2369 and 2929.
2290 Also, for "Auto-Submitted", treat anything other than "no" as
2291 non-personal, in accordance with RFC 3834. (Previously it treated
2292 anything starting "auto-" as non-personal.)
2294 TF/01 The control=submission/name=... option had a problem with syntax
2295 errors if the name included a slash character. The /name= option
2296 now slurps the rest of the string, so it can include any characters
2297 but it must come last in the list of options (after /sender_retain
2300 PH/05 Some modifications to the interface to the fake nameserver for the new
2308 TK/01 Added the "success_on_redirect" address verification option. See
2309 NewStuff for rationale and an example.
2311 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
2313 PH/02 Patch to exigrep to allow it to work on syslog lines.
2315 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
2316 fread() to skip over the body file's header line, because in Cygwin the
2317 header line is locked and is inaccessible.
2319 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
2320 co-exist for some time) to make it clear that it is the Exim ID that is
2321 referenced, not the Message-ID: header line.
2323 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
2324 string_format() function, because snprintf() does not exist on all
2327 PH/06 The use of forbid_filter_existstest now also locks out the use of the
2328 ${stat: expansion item.
2330 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
2331 protocol synchronization error", to keep the pedants happy.
2333 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
2334 well as for IRIX systems, when gcc is being used. See the host.c source
2337 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
2339 PH/10 Named domain lists were not working if used in a queue_smtp_domains
2342 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
2343 transport and to the smtp transport in LMTP mode.
2345 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
2347 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
2348 run a filter in a subprocess. This could lead to confusion in subsequent
2349 lookups in the parent process. There should also be a search_tidyup() at
2350 the end of the subprocess.
2352 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
2353 only if the host matched helo_try_verify_hosts, which caused the
2354 verification to occur when the EHLO/HELO command was issued. The ACL just
2355 tested the remembered result. Now, if a previous verification attempt has
2356 not happened, "verify = helo" does it there and then.
2358 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
2360 TK/03 Fix log output including CR from clamd.
2362 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
2363 exist provoked a memory error which could cause a segfault.
2365 PH/15 Installed PCRE 6.2
2367 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
2369 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
2370 of the problem. Specifically, suggested +O2 rather than +O1 for the
2373 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
2375 PH/20 If a delivery was routed to a non-standard port by means of an SRV
2376 record, the port was not correctly logged when the outgoing_port log
2377 selector was set (it logged the transort's default port).
2379 PH/21 Added support for host-specific ports to manualroute, queryprogram,
2380 fallback_hosts, and "hosts" in the smtp transport.
2382 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
2383 host errors such as "Connection refused".
2385 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
2386 authentication with radiusclient 0.4.9:
2388 - Error returned from rc_read_config was caught wrongly
2389 - Username/password not passed on to radius server due to wrong length.
2391 The presumption is that some radiusclient API changes for 4.51/PH/17
2392 were not taken care of correctly. The code is still untested by me (my
2393 Linux distribution still has 0.3.2 of radiusclient), but it was
2394 contributed by a Radius user.
2396 PH/24 When doing a callout, the value of $domain wasn't set correctly when
2397 expanding the "port" option of the smtp transport.
2399 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
2400 while reading a MIME header. Thanks to Tom Hughes for a patch.
2402 PH/24 Include config.h inside local_scan.h so that configuration settings are
2405 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
2406 that in an ACL for RCPT (for example), you can examine exactly what was
2409 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
2410 commands, but it was not correctly comparing the address with the actual
2411 client host address. Thus, it would show the EHLO address in Received:
2412 header lines when this was not necessary.
2414 PH/27 Added the % operator to ${eval:}.
2416 PH/28 Exim tries to create and chdir to its spool directory when it starts;
2417 it should be ignoring failures (because with -C, for example, it has lost
2418 privilege). It wasn't ignoring creation failures other than "already
2421 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
2424 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
2425 because an input line was too long, either on its own, or by virtue of
2426 too many continuations, the temporary file was not being removed, and the
2427 return code was incorrect.
2429 PH/31 Missing "BOOL" in function definition in filtertest.c.
2431 PH/32 Applied Sieve patches from the maintainer.
2433 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
2435 PH/33 Added "verify = not_blind".
2437 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
2438 Local/Makefile (with some defaults set). These are used in built scripts
2439 such as exicyclog, but they have never been used in the exim_install
2440 script (though there are many overriding facilities there). I have
2441 arranged that the exim_install script now takes note of these two
2444 PH/35 Installed configuration files for Dragonfly.
2446 PH/36 When a locally submitted message by a trusted user did not contain a
2447 From: header, and the sender address was obtained from -f or from an SMTP
2448 MAIL command, and the trusted user did not use -F to supply a sender
2449 name, $originator_name was incorrectly used when constructing a From:
2450 header. Furthermore, $originator_name was used for submission mode
2451 messages from external hosts without From: headers in a similar way,
2452 which is clearly wrong.
2454 PH/37 Added control=suppress_local_fixups.
2456 PH/38 When log_selector = +received_sender was set, and the addition of the
2457 sender made the log line's construction buffer exactly full, or one byte
2458 less than full, an overflow happened when the terminating "\n" was
2461 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
2462 when the result of a list match is failure because a DNS lookup failed.
2464 PH/40 RM_COMMAND is now used in the building process.
2466 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
2467 the "build-* directories that it finds.
2469 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
2470 address in a domain literal was a prefix of an interface address.
2472 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
2473 when verifying a sender address, unless rewrite_headers is false.
2475 PH/44 Wrote a long comment about why errors_to addresses are verified as
2476 recipients, not senders.
2478 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
2479 the ratelimit ACL was added.
2481 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
2483 PH/46 Added extra information about PostgreSQL errors to the error string.
2485 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
2486 avoiding the need to install special zones in a real server. This is
2487 backwards compatible; if it can't find the fake resolver, it drops back.
2488 Thus, both old and new test suites can be run.
2490 TF/02 Added util/ratelimit.pl
2492 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
2493 clock is set back in time.
2495 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
2496 Candler <B.Candler@pobox.com>.
2498 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
2499 OK for addresses that are the result of redirections.
2501 PH/48 A number of further additions for the benefit of the new test suite,
2502 including a fake gethostbyname() that interfaces to the fake DNS resolver
2505 TF/06 The fix for widen_domains has also been applied to qualify_single and
2506 search_parents which are the other dnslookup options that can cause
2509 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
2512 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
2514 TF/07 Exim produced the error message "an SRV record indicated no SMTP
2515 service" if it encountered an MX record with an empty target hostname.
2516 The message is now "an MX or SRV record indicated no SMTP service".
2518 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
2519 if the DNS of the sending site is misconfigured. This is quite a
2520 common situation. This change restores the behaviour of treating a
2521 helo verification defer as a failure.
2523 PH/51 If self=fail was set on a router, the bounce message did not include the
2524 actual error message.
2530 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
2532 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
2533 command itself ended in error, the underlying message about the transport
2534 filter timeout was being overwritten with the pipe command error. Now the
2535 underlying error message should be appended to the second error message.
2537 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
2539 PH/02 Reduce the amount of output that "make" produces by default. Full output
2540 can still be requested.
2542 PH/03 The warning log line about a condition test deferring for a "warn" verb
2543 was being output only once per connection, rather than after each
2544 occurrence (because it was using the same function as for successful
2545 "warn" verbs). This seems wrong, so I have changed it.
2547 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
2548 it should not have, which might have caused a crash in the right
2549 circumstances, but probably never did.
2551 PH/04 Installed a modified version of Tony Finch's patch to make submission
2552 mode fix the return path as well as the Sender: header line, and to
2553 add a /name= option so that you can make the user's friendly name appear
2556 TF/03 Added the control = fakedefer ACL modifier.
2558 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
2559 Mark Lowes for thorough testing.
2561 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
2563 TK/03 Merged latest SRS patch from Miles Wilton.
2565 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
2566 with the definition in sysexits.h (which is #included earlier).
2567 Fortunately, Exim does not actually use EX_OK. The code used to try to
2568 preserve the sysexits.h value, by assumimg that macro definitions were
2569 scanned for macro replacements. I have been disabused of this notion,
2570 so now the code just undefines EX_OK before #including unistd.h.
2572 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
2573 in the smtp transport. When a block could not be written in a single
2574 write() function, the timeout was being re-applied to each part-write.
2575 This seems wrong - if the receiver was accepting one byte at a time it
2576 would take for ever. The timeout is now adjusted when this happens. It
2577 doesn't have to be particularly precise.
2579 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
2580 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
2582 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
2583 without a domain if the check to <postmaster@domain> fails.
2585 SC/01 Eximstats: added -xls and the ability to specify output files
2586 (patch written by Frank Heydlauf).
2588 SC/02 Eximstats: use FileHandles for outputing results.
2590 SC/03 Eximstats: allow any combination of xls, txt, and html output.
2592 SC/04 Eximstats: fixed display of large numbers with -nvr option
2594 SC/05 Eximstats: fixed merging of reports with empty tables.
2596 SC/06 Eximstats: added the -include_original_destination flag
2598 SC/07 Eximstats: removed tabs and trailing whitespace.
2600 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
2602 TK/06 MBOX spool code: Add real "From " MBOX separator line
2603 so the .eml file is really in mbox format (even though
2604 most programs do not really care). Patch from Alex Miller.
2606 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
2607 The latter is generated from $received_to and is only set if the
2608 message has one envelope recipient. SA can use these headers,
2609 obviously out-of-the-box. Patch from Alex Miller.
2611 PH/08 The ${def test on a variable was returning false if the variable's
2612 value was "0", contrary to what the specification has always said!
2613 The result should be true unless the variable is empty.
2615 PH/09 The syntax error of a character other than { following "${if
2616 def:variable_name" (after optional whitespace) was not being diagnosed.
2617 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
2618 accidental colon was present, for example, could give incorrect results.
2620 PH/10 Tidied the code in a number of places where the st_size field of a stat()
2621 result is used (not including appendfile, where other changes are about
2624 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
2625 This involved changing a lot of size variables from int to off_t. It
2626 should work with maildirs and everything.
2628 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
2629 spamd dying while we are connected to it.
2631 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
2634 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
2635 function for BDB 4.3.
2637 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
2639 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
2640 the sources for PCRE have been re-arranged and more files are now
2643 PH/15 The code I had for printing potentially long long variables in PH/11
2644 above was not the best (it lost precision). The length of off_t variables
2645 is now inspected at build time, and an appropriate printing format (%ld
2646 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
2647 to be "long long int" or "long int". This is needed for the internal
2648 formatting function string_vformat().
2650 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
2651 the configuration file to be ":syslog", then the script "guesses" where
2652 the logs files are, rather than using the compiled in default. In our
2653 case the guess is not the same as the compiled default, so the script
2654 suddenly stopped working when I started to use syslog. The patch checks
2655 to see if log_file_path is "". If so, it attempts to read it from exim
2656 with no configuration file to get the compiled in version, before it
2657 falls back to the previous guessing code."
2659 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
2660 implementing BATV in an Exim configuration. See NewStuff for the gory
2663 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
2664 Makefile that are specific to HP-UX.
2666 PH/18 If the "use_postmaster" option was set for a recipient callout together
2667 with the "random" option, the postmaster address was used as the MAIL
2668 FROM address for the random test, but not for the subsequent recipient
2669 test. It is now used for both.
2671 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
2672 patch removes a few documentation additions to RFC 3028, because the
2673 latest draft now contains them. It adds the new en;ascii-case comparator
2674 and a new error check for 8bit text in MIME parts. Comparator and
2675 require names are now matched exactly. I enabled the subaddress
2676 extension, but it is not well tested yet (read: it works for me)."
2678 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
2679 rework some of the code of TK/09 above to avoid the hardwired use of
2680 "%lld" and "long long". Replaced the call to snprintf() with a call to
2683 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
2684 records point to non-existent hosts", "retry timeout exceeded", and
2685 "retry time not reached for any host after a long failure period".
2687 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
2688 experimental DomainKeys support:
2690 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
2691 (2) On an error such as an illegally used "control", the wrong name for
2692 the control was given.
2694 These problems did NOT occur unless DomainKeys support was compiled.
2696 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
2698 PH/24 Added ${if match_ip condition.
2700 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
2701 databases so that it will be absolutely obvious if a crash occurs in the
2702 DB library. This is a regular occurrence (often caused by mis-matched
2705 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
2706 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
2707 picked up on a user's system that detects such things. There doesn't seem
2708 to be a gcc warning option for this - only an attribute that has to be
2709 put on the function's prototype. It seems that in Fedora Core 4 they have
2710 set this on a number of new functions. No doubt there will be more in due
2713 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
2714 specify a transport. However, if an address that was verified by such a
2715 router was the subject of a callout, Exim crashed because it tried to
2716 read the rcpt_include_affixes from the non-existent transport. Now it
2717 just assumes that the setting of that option is false. This bug was
2718 introduced by 4.51/PH/31.
2720 PH/28 Changed -d+all to exclude +memory, because that information is very
2721 rarely of interest, but it makes the output a lot bigger. People tend to
2722 do -d+all out of habit.
2724 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
2725 code in os-type was giving problems when libc.so lives in lib64, like on
2728 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
2729 aren't the modern standard, and it seems that some systems' include files
2730 don't always have them. Exim was already checking for some of the newer
2731 ones like T_AAAA, and defining it itself. I've added checks for all the
2732 record types that Exim uses.
2734 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
2735 not automatically generating a new one, as it is supposed to. This
2736 prevented TLS from working. If the file did exist, but contained invalid
2737 data, a new version was generated, as expected. It was only the case of a
2738 non-existent file that was broken.
2740 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
2741 with a change in libdomainkeys > 0.64.
2743 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
2744 from DNS. If the selector record carries the flag, it now has
2745 precedence over the domain-wide flag.
2747 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
2749 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
2750 the use of a port name that isn't defined in /etc/services) occurred, the
2751 message was deferred as in a normal delivery, and thus remained on the
2752 spool, instead of being failed because of the mua_wrapper setting. This
2753 is now fixed, and I tidied up some of the mua_wrapper messages at the
2756 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
2757 the messages in a hash of arrays rather than using individual hashes.
2758 This is a bit cleaner and results in dramatic memory savings, albeit
2759 at a slight CPU cost.
2761 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
2762 as requested by Marc Sherman.
2764 SC/10 Eximstats: added histograms for user specified patterns as requested
2767 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
2769 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
2770 fopen() in the content-scanning modules that did not already have it.
2776 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
2777 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
2779 TK/02 Fix ACL "control" statement not being available in MIME ACL.
2781 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
2783 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
2784 to test Sieve filters that use "vacation".
2786 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
2787 that changes the way the GnuTLS parameters are stored in the cache file.
2788 The new format can be generated externally. For backward compatibility,
2789 if the data in the cache doesn't make sense, Exim assumes it has read an
2790 old-format file, and it generates new data and writes a new file. This
2791 means that you can't go back to an older release without removing the
2794 PH/03 A redirect router that has both "unseen" and "one_time" set does not
2795 work if there are any delivery delays because "one_time" forces the
2796 parent to be marked "delivered", so its unseen clone is never tried
2797 again. For this reason, Exim now forbids the simultaneous setting of
2800 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
2801 redirected to themselves ("homonym" addresses). Read the long ChangeLog
2802 entry if you want to know the details. The fix, however, neglected to
2803 consider the case when local delivery batching is involved. The test for
2804 "previously delivered" was not happening when checking to see if an
2805 address could be batched with a previous (undelivered) one; under
2806 certain circumstances this could lead to multiple deliveries to the same
2809 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
2810 in its include files, and this causes problems building Exim.
2812 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
2813 header_syntax) but Exim was just ignoring anything given after a slash.
2814 In particular, this caused confusion with an attempt to use "verify =
2815 reverse_host_lookup/defer_ok". An error is now given when options are
2816 supplied for verify items that do not have them. (Maybe reverse_host_
2817 lookup should have a defer_ok option, but that's a different point.)
2819 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
2820 defined by RFC 821) to 2048, because there were problems with some AUTH
2821 commands, and RFC 1869 says the size should be increased for extended
2822 SMTP commands that take arguments.
2824 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
2827 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
2828 "unknown" error; now it says that the functionality isn't in the binary.
2830 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
2831 an address' error message when a string expansion fails (syntax or
2832 whatever). Otherwise the password may appear in the log. Following change
2833 PH/42 below, there is no longer a chance of it appearing in a bounce
2836 PH/11 Installed exipick version 20050225.0 from John Jetmore.
2838 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2839 of its addresses was ever tried. (Bugzilla bug #2.)
2841 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2842 the result incorrectly in the debug output. (It correctly added a newline
2843 to what was transported.)
2845 TF/01 Added $received_time.
2847 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2848 commented out examples of how to interface to a virus scanner and to
2849 SpamAssassin. Also added commented examples of av_scanner and
2850 spamd_address settings.
2852 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2853 and controls are allowed in which ACLs. There were a couple of minor
2854 errors. Some of the entries in the conditions table (which is a table of
2855 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2856 negation of where the condition IS allowed.
2858 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2860 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2861 header file does not have a version number, so I've had to invent a new
2862 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2863 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2864 radiusclient), but it was contributed by a Radius user.
2866 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2867 files or directories, for OpenSSL.
2869 PH/19 When an Exim process that is running as root has to create an Exim log
2870 file, it does so in a subprocess that runs as exim:exim so as to get the
2871 ownership right at creation (otherwise, other Exim processes might see
2872 the file with the wrong ownership). There was no test for failure of this
2873 fork() call, which would lead to the process getting stuck as it waited
2874 for a non-existent subprocess. Forks do occasionally fail when resources
2875 run out. I reviewed all the other calls to fork(); they all seem to check
2878 PH/20 When checking for unexpected SMTP input at connect time (before writing
2879 the banner), Exim was not dealing correctly with a non-positive return
2880 from the read() function. If the client had disconnected by this time,
2881 the result was a log entry for a synchronization error with an empty
2882 string after "input=" when read() returned zero. If read() returned -1
2883 (an event I could not check), uninitialized data bytes were printed.
2884 There were reports of junk text (parts of files, etc) appearing after
2887 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2889 PH/22 Added support for macro redefinition, and (re)definition in between
2890 driver and ACL definitions.
2892 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2893 forgetting to use the resulting value; it was using the unexpanded value.
2895 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2896 hadn't been configured. The fix is from Juergen Kreileder, who
2897 understands it better than I do:
2899 "Here's what I see happening with three configured cyrus_sasl
2900 authenticators configured (plain, login, cram-md5):
2902 On startup auth_cyrus_sasl_init() gets called for each of these.
2903 This means three calls to sasl_listmech() without a specified mech_list.
2904 => SASL tests which mechs of all available mechs actually work
2905 => three warnings about OTP not working
2906 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2908 With the patch, sasl_listmech() also gets called three times. But now
2909 SASL's mech_list option is set to the server_mech specified in the the
2910 authenticator. Or in other words, the answer from sasl_listmech()
2911 gets limited to just the mech you're testing for (which is different
2913 => the return list contains just 'plain' or 'login', 'cram-md5' or
2914 nothing depending on the value of ob->server_mech.
2916 I've just tested the patch: Authentication still works fine,
2917 unavailable mechs specified in the exim configuration are still
2918 caught, and the auth.log warnings about OTP are gone."
2920 PH/25 When debugging is enabled, the contents of the command line are added
2921 to the debugging output, even when log_selector=+arguments is not
2924 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2925 answer is "GNU", and only if the return is "GNU/something" is the answer
2928 PH/27 $acl_verify_message is now set immediately after the failure of a
2929 verification in an ACL, and so is available in subsequent modifiers. In
2930 particular, the message can be preserved by coding like this:
2932 warn !verify = sender
2933 set acl_m0 = $acl_verify_message
2935 Previously, $acl_verify_message was set only while expanding "message"
2936 and "log_message" when a very denied access.
2938 PH/28 Modified OS/os.c-Linux with
2940 -#ifndef OS_LOAD_AVERAGE
2941 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2943 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2944 nomenclature these days.)
2946 PH/29 Installed patch from the Sieve maintainer that adds the options
2947 sieve_useraddress and sieve_subaddress to the redirect router.
2949 PH/30 In these circumstances:
2950 . Two addresses routed to the same list of hosts;
2951 . First host does not offer TLS;
2952 . First host accepts first address;
2953 . First host gives temporary error to second address;
2954 . Second host offers TLS and a TLS session is established;
2955 . Second host accepts second address.
2956 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2957 and peerdn, if requested) that were in fact used only for the second
2960 PH/31 When doing a callout as part of verifying an address, Exim was not paying
2961 attention to any local part prefix or suffix that was matched by the
2962 router that accepted the address. It now behaves in the same way as it
2963 does for delivery: the affixes are removed from the local part unless
2964 rcpt_include_affixes is set on the transport.
2966 PH/32 Add the sender address, as F=<...>, to the log line when logging a
2967 timeout during the DATA phase of an incoming message.
2969 PH/33 Sieve envelope tests were broken for match types other than :is. I have
2970 applied a patch sanctioned by the Sieve maintainer.
2972 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2973 the uid or gid is negative. A case of a negative gid caused this to be
2974 noticed. The fix allows for either to be negative.
2976 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2977 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2980 PH/36 The change PH/12 above was broken. Fixed it.
2982 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2983 the grounds that routing the same address twice would always produce the
2984 same answer. This might have been true once, but it is certainly no
2985 longer true now. Routing a child address may depend on the previous
2986 routing that produced that child. Some complicated redirection strategies
2987 went wrong when messages had multiple recipients, and made Exim's
2988 behaviour dependent on the order in which the addresses were given.
2990 I have moved the duplicate checking until after the routing is complete.
2991 Exim scans the addresses that are assigned to local and remote
2992 transports, and removes any duplicates. This means that more work will be
2993 done, as duplicates will always all be routed, but duplicates are
2994 presumably rare, so I don't expect this is of any significance.
2996 For deliveries to pipes, files, and autoreplies, the duplicate checking
2997 still happens during the routing process, since they are not going to be
3000 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
3001 It corrects a timeout issue with spamd. This is Ian's comment: "The
3002 background is that sometimes spamd either never reads data from a
3003 connection it has accepted, or it never writes response data. The exiscan
3004 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
3005 blindly assumes that writes won't block so it may never time out."
3007 PH/39 Allow G after quota size as well as K and M.
3009 PH/40 The value set for $authenticated_id in an authenticator may not contain
3010 binary zeroes or newlines because the value is written to log lines and
3011 to spool files. There was no check on this. Now the value is run through
3012 the string_printing() function so that such characters are converted to
3013 printable escape sequences.
3015 PH/41 $message_linecount is a new variable that contains the total number of
3016 lines in the message. Compare $body_linecount, which is the count for the
3019 PH/42 Exim no longer gives details of delivery errors for specific addresses in
3020 bounce and delay warning messages, except in certain special cases, which
3023 (a) An SMTP error message from a remote host;
3024 (b) A message specified in a :fail: redirection;
3025 (c) A message specified in a "fail" command in a system filter;
3026 (d) A message specified in a FAIL return from the queryprogram router;
3027 (e) A message specified by the cannot_route_message router option.
3029 In these cases only, Exim does include the error details in bounce and
3030 warning messages. There are also a few cases where bland messages such
3031 as "unrouteable address" or "local delivery error" are given.
3033 PH/43 $value is now also set for the "else" part of a ${run expansion.
3035 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
3036 being worked on, but at least Exim now implements the latest version to
3039 PH/45 In a pipe transport, although a timeout while waiting for the pipe
3040 process to complete was treated as a delivery failure, a timeout while
3041 writing the message to the pipe was logged, but erroneously treated as a
3042 successful delivery. Such timeouts include transport filter timeouts. For
3043 consistency with the overall process timeout, these timeouts are now
3044 treated as errors, giving rise to delivery failures by default. However,
3045 there is now a new Boolean option for the pipe transport called
3046 timeout_defer, which, if set TRUE, converts the failures into defers for
3047 both kinds of timeout. A transport filter timeout is now identified in
3050 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
3051 systems where "make" and "gmake" are different, calling "gmake" at top
3052 level broke things. I've arranged for the value of $(MAKE) to be passed
3053 from the Makefile to this script so that it can call the same version of
3057 A note about Exim versions 4.44 and 4.50
3058 ----------------------------------------
3060 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
3061 changes of various kinds. As a consequence, a big documentation update was
3062 needed. This delayed the release for rather longer than seemed good, especially
3063 in the light of a couple of (minor) security issues. Therefore, the changes
3064 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
3065 release. So 4.44 and 4.50 are in effect two different branches that both start
3068 I have left the 4.50 change log unchanged; it contains all the changes since
3069 4.43. The change log for 4.44 is below; many of its items are identical to
3070 those for 4.50. This seems to be the most sensible way to preserve the
3071 historical information.
3077 1. Minor wording change to the doc/README.SIEVE file.
3079 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
3080 computation of the current number of files was incorrect.
3082 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3083 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3086 4. Give more explanation in the error message when the command for a transport
3087 filter fails to execute.
3089 5. There are several places where Exim runs a non-Exim command in a
3090 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3091 was being done only for the command run by the queryprogram router. It is
3092 now done for all such subprocesses. The other cases are: ${run, transport
3093 filters, and the commands run by the lmtp and pipe transports.
3095 6. Added CONFIGURE_GROUP build-time option.
3097 7. Some older OS have a limit of 256 on the maximum number of file
3098 descriptors. Exim was using setrlimit() to set 1000 as a large value
3099 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3100 systems. I've change it so that if it can't get 1000, it tries for 256.
3102 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3103 was an oversight, and furthermore, ever since the addition of extra
3104 controls (e.g. 4.43/32), the checks on when to allow different forms of
3105 "control" were broken. There should now be diagnostics for all cases when a
3106 control that does not make sense is encountered.
3108 9. Added the /retain_sender option to "control=submission".
3110 10. $recipients is now available in the predata ACL (oversight).
3112 11. Tidy the search cache before the fork to do a delivery from a message
3113 received from the command line. Otherwise the child will trigger a lookup
3114 failure and thereby defer the delivery if it tries to use (for example) a
3115 cached ldap connection that the parent has called unbind on.
3117 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3118 of $address_data from the recipient verification was clobbered by the
3119 sender verification.
3121 13. The value of address_data from a sender verification is now available in
3122 $sender_address_data in subsequent conditions in the ACL statement.
3124 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
3126 15. Added a new option "connect=<time>" to callout options, to set a different
3129 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3130 was its contents. (It was OK if the option was not defined at all.)
3132 17. A "Completed" log line is now written for messages that are removed from
3133 the spool by the -Mrm option.
3135 18. New variables $sender_verify_failure and $recipient_verify_failure contain
3136 information about exactly what failed.
3138 19. Added -dd to debug only the daemon process.
3140 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
3141 handles timeouts, both on the server side and network timeouts. Renamed the
3142 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
3144 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
3145 It is now set to "smtps".
3147 22. $host_address is now set to the target address during the checking of
3148 ignore_target_hosts.
3150 23. When checking ignore_target_hosts for an ipliteral router, no host name was
3151 being passed; this would have caused $sender_host_name to have been used if
3152 matching the list had actually called for a host name (not very likely,
3153 since this list is usually IP addresses). A host name is now passed as
3156 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3157 code that specifies a non-restarting handler (typically sigaction() in
3158 modern systems) in an attempt to fix a rare and obscure crash bug.
3160 25. Narrowed the window for a race in the daemon that could cause it to ignore
3161 SIGCHLD signals. This is not a major problem, because they are used only to
3162 wake it up if nothing else does.
3164 26. A malformed maildirsize file could cause Exim to calculate negative values
3165 for the mailbox size or file count. Odd effects could occur as a result.
3166 The maildirsize information is now recalculated if the size or filecount
3169 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3170 support for a long time. Removed HAVE_SYS_VFS_H.
3172 28. Installed the latest version of exipick from John Jetmore.
3174 29. In an address list, if the pattern was not a regular expression, an empty
3175 subject address (from a bounce message) matched only if the pattern was an
3176 empty string. Non-empty patterns were not even tested. This was the wrong
3177 because it is perfectly reasonable to use an empty address as part of a
3178 database query. An empty address is now tested by patterns that are
3179 lookups. However, all the other forms of pattern expect the subject to
3180 contain a local part and a domain, and therefore, for them, an empty
3181 address still always fails if the pattern is not itself empty.
3183 30. Exim went into a mad DNS loop when attempting to do a callout where the
3184 host was specified on an smtp transport, and looking it up yielded more
3185 than one IP address.
3187 31. Re-factored the code for checking spool and log partition space into a
3188 function that finds that data and another that does the check. The former
3189 is then used to implement four new variables: $spool_space, $log_space,
3190 $spool_inodes, and $log_inodes.
3192 32. The RFC2047 encoding function was originally intended for short strings
3193 such as real names; it was not keeping to the 75-character limit for
3194 encoded words that the RFC imposes. It now respects the limit, and
3195 generates multiple encoded words if necessary. To be on the safe side, I
3196 have increased the buffer size for the ${rfc2047: expansion operator from
3199 33. It is now permitted to omit both strings after an "if" condition; if the
3200 condition is true, the result is "true". As before, when the second string
3201 is omitted, a false condition yields an empty string. This makes it less
3202 cumbersome to write custom ACL and router conditions.
3204 34. Failure to deliver a bounce message always caused it to be frozen, even if
3205 there was an errors_to setting on the router. The errors_to setting is now
3208 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3209 canonical form (fully expanded) before being placed in
3210 $sender_host_address.
3212 36. The table in the code that translates DNS record types into text (T_A to
3213 "A" for instance) was missing entries for NS and CNAME. It is just possible
3214 that this could have caused confusion if both these types were looked up
3215 for the same domain, because the text type is used as part of Exim's
3216 per-process caching. But the chance of anyone hitting this buglet seems
3219 37. The dnsdb lookup has been extended in a number of ways.
3221 (1) There is a new type, "zns", which walks up the domain tree until it
3222 finds some nameserver records. It should be used with care.
3224 (2) There is a new type, "mxh", which is like "mx" except that it returns
3225 just the host names, not the priorities.
3227 (3) It is now possible to give a list of domains (or IP addresses) to be
3228 looked up. The behaviour when one of the lookups defers can be
3229 controlled by a keyword.
3231 (4) It is now possible to specify the separator character for use when
3232 multiple records are returned.
3234 38. The dnslists ACL condition has been extended: it is now possible to supply
3235 a list of IP addresses and/or domains to be looked up in a particular DNS
3238 39. Added log_selector=+queue_time_overall.
3240 40. When running the queue in the test harness, wait just a tad after forking a
3241 delivery process, to get repeatability of debugging output.
3243 41. Include certificate and key file names in error message when GnuTLS fails
3244 to set them up, because the GnuTLS error message doesn't include the name
3245 of the failing file when there is a problem reading it.
3247 42. Allow both -bf and -bF in the same test run.
3249 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
3251 44. The "Exiscan patch" is now merged into the mainline Exim source.
3253 45. Sometimes the final signoff response after QUIT could fail to get
3254 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3255 < 0 before doing a fflush(). This bug looks as though it goes back to the
3256 introduction of TLS in release 3.20, but "sometimes" must have been rare
3257 because the tests only now provoked it.
3259 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
3260 (this can affect the format of dates).
3262 47. exim_tidydb, when checking for the continued existence of a message for
3263 which it has found a message-specific retry record, was not finding
3264 messages that were in split spool directories. Consequently, it was
3265 deleting retry records that should have stayed in existence.
3267 48. Steve fixed some bugs in eximstats.
3269 49. The SPA authentication driver was not abandoning authentication and moving
3270 on to the next authenticator when an expansion was forced to fail,
3271 contradicting the general specification for all authenticators. Instead it
3272 was generating a temporary error. It now behaves as specified.
3274 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
3275 (the order specifies the preference for clients). The order is now AES256,
3276 AES128, 3DES, ARCFOUR128.
3278 51. Small patch to Sieve code - explicitly set From: when generating an
3281 52. Exim crashed if a remote delivery caused a very long error message to be
3282 recorded - for instance if somebody sent an entire SpamAssassin report back
3283 as a large number of 550 error lines. This bug was coincidentally fixed by
3284 increasing the size of one of Exim's internal buffers (big_buffer) that
3285 happened as part of the Exiscan merge. However, to be on the safe side, I
3286 have made the code more robust (and fixed the comments that describe what
3289 53. Now that there can be additional text after "Completed" in log lines (if
3290 the queue_time_overall log selector is set), a one-byte patch to exigrep
3291 was needed to allow it to recognize "Completed" as not the last thing in
3294 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
3295 patch that reportedly fixes this has been added. I am not expert enough to
3296 create a test for it. This is what the patch creator wrote:
3298 "I found a little strange behaviour of ldap code when working with
3299 Windows 2003 AD Domain, where users was placed in more than one
3300 Organization Units. When I tried to give exim partial DN, the exit code
3301 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
3302 But simultaneously result of request was absolutely normal ldap result,
3303 so I produce this patch..."
3305 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
3306 REFERENCE, so I have modified the code to exclude the patch when that macro
3309 55. Some experimental protocols are using DNS PTR records for new purposes. The
3310 keys for these records are domain names, not reversed IP addresses. The
3311 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3312 leaves it alone. Component reversal etc. now happens only for IP addresses.
3315 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
3317 57. Double the size of the debug message buffer (to 2048) so that more of very
3318 long debug lines gets shown.
3320 58. The exicyclog utility now does better if the number of log files to keep
3321 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
3323 59. Two changes related to the smtp_active_hostname option:
3325 (1) $smtp_active_hostname is now available as a variable.
3326 (2) The default for smtp_banner uses $smtp_active_hostname instead
3327 of $primary_hostname.
3329 60. The host_aton() function is supposed to be passed a string that is known
3330 to be a valid IP address. However, in the case of IPv6 addresses, it was
3331 not checking this. This is a hostage to fortune. Exim now panics and dies
3332 if the condition is not met. A case was found where this could be provoked
3333 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3334 components; fortuitously, this particular loophole had already been fixed
3335 by change 4.50/55 above.
3337 If there are any other similar loopholes, the new check in host_aton()
3338 itself should stop them being exploited. The report I received stated that
3339 data on the command line could provoke the exploit when Exim was running as
3340 exim, but did not say which command line option was involved. All I could
3341 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3342 running as the user.
3345 61. There was a buffer overflow vulnerability in the SPA authentication code
3346 (which came originally from the Samba project). I have added a test to the
3347 spa_base64_to_bits() function which I hope fixes it.
3350 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
3351 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
3353 63. The daemon start-up calls getloadavg() while still root for those OS that
3354 need the first call to be done as root, but it missed one case: when
3355 deliver_queue_load_max is set with deliver_drop_privilege. This is
3356 necessary for the benefit of the queue runner, because there is no re-exec
3357 when deliver_drop_privilege is set.
3359 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
3360 This has been fixed.
3362 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3363 was in use, was not putting the data itself into the right store pool;
3364 consequently, it could be overwritten for a subsequent message in the same
3365 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3368 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
3370 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
3371 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
3372 the function were treating the return as a boolean value, which happened to
3373 work because 0=false and not-0=true, but is not correct code.
3375 68. The host_aton() function was not handling scoped IPv6 addresses (those
3376 with, for example, "%eth0" on the end) correctly.
3378 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
3379 negated items (that is, ~something) in unsigned ints. Some compilers
3380 apparently mutter when there is no cast.
3382 70. If an address verification called from an ACL failed, and did not produce a
3383 user-specific message (i.e. there was only a "system" message), nothing was
3384 put in $acl_verify_message. In this situation, it now puts the system
3387 71. Change 4.23/11 added synchronization checking at the start of an SMTP
3388 session; change 4.31/43 added the unwanted input to the log line - except
3389 that it did not do this in the start of session case. It now does.
3391 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
3392 This is wrong and can cause the other end to generate a synchronization
3393 error if it is another Exim or anything else that does the synchronization
3394 check. A QUIT command is no longer sent after a timeout.
3396 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
3397 during host lookups.
3399 74. The defer_ok option of callout verification was not working if it was used
3400 when verifying addresses in header lines, that is, for this case:
3402 verify = header_sender/callout=defer_ok
3404 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
3405 those file descriptors could be used for SMTP connections. If anything
3406 wrote to stderr (the example that came up was "warn" in embedded Perl), it
3407 could be sent to the SMTP client, causing chaos. The daemon now opens
3408 stdin, stdout, and stderr to /dev/null when it puts itself into the
3411 76. Arrange for output from Perl's "warn" command to be written to Exim's main
3412 log by default. The user can override this with suitable Perl magic.
3414 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
3415 the log message when discard triggers, was not working for the DATA ACL or
3416 for the non-SMTP ACL.
3418 78. Error message wording change in sieve.c.
3420 79. If smtp_accept_max_per_host was set, the number of connections could be
3421 restricted to fewer than expected, because the daemon was trying to set up
3422 a new connection before checking whether the processes handling previous
3423 connections had finished. The check for completed processes is now done
3424 earlier. On busy systems, this bug wouldn't be noticed because something
3425 else would have woken the daemon, and it would have reaped the completed
3428 80. If a message was submitted locally by a user whose login name contained one
3429 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
3430 It caused a spool format error. I have fixed the spool reading code. A
3431 related problem was that the "from" clause in the Received: line became
3432 illegal because of the space(s). It is now covered by ${quote_local_part.
3434 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
3437 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
3439 83. Patch from Sieve maintainer to fix unterminated string problem in
3440 "vacation" handling.
3442 84. Some minor changes to the Linux configuration files to help with other
3443 OS variants using glibc.
3445 85. One more patch for Sieve to update vacation handling to latest spec.
3448 ----------------------------------------------------
3449 See the note above about the 4.44 and 4.50 releases.
3450 ----------------------------------------------------
3456 1. Change 4.43/35 introduced a bug that caused file counts to be
3457 incorrectly computed when quota_filecount was set in an appendfile
3460 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
3461 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
3464 3. Give more explanation in the error message when the command for a transport
3465 filter fails to execute.
3467 4. There are several places where Exim runs a non-Exim command in a
3468 subprocess. The SIGUSR1 signal should be disabled for these processes. This
3469 was being done only for the command run by the queryprogram router. It is
3470 now done for all such subprocesses. The other cases are: ${run, transport
3471 filters, and the commands run by the lmtp and pipe transports.
3473 5. Some older OS have a limit of 256 on the maximum number of file
3474 descriptors. Exim was using setrlimit() to set 1000 as a large value
3475 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
3476 systems. I've change it so that if it can't get 1000, it tries for 256.
3478 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
3479 was an oversight, and furthermore, ever since the addition of extra
3480 controls (e.g. 4.43/32), the checks on when to allow different forms of
3481 "control" were broken. There should now be diagnostics for all cases when a
3482 control that does not make sense is encountered.
3484 7. $recipients is now available in the predata ACL (oversight).
3486 8. Tidy the search cache before the fork to do a delivery from a message
3487 received from the command line. Otherwise the child will trigger a lookup
3488 failure and thereby defer the delivery if it tries to use (for example) a
3489 cached ldap connection that the parent has called unbind on.
3491 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
3492 of $address_data from the recipient verification was clobbered by the
3493 sender verification.
3495 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
3496 was its contents. (It was OK if the option was not defined at all.)
3498 11. A "Completed" log line is now written for messages that are removed from
3499 the spool by the -Mrm option.
3501 12. $host_address is now set to the target address during the checking of
3502 ignore_target_hosts.
3504 13. When checking ignore_target_hosts for an ipliteral router, no host name was
3505 being passed; this would have caused $sender_host_name to have been used if
3506 matching the list had actually called for a host name (not very likely,
3507 since this list is usually IP addresses). A host name is now passed as
3510 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
3511 code that specifies a non-restarting handler (typically sigaction() in
3512 modern systems) in an attempt to fix a rare and obscure crash bug.
3514 15. Narrowed the window for a race in the daemon that could cause it to ignore
3515 SIGCHLD signals. This is not a major problem, because they are used only to
3516 wake it up if nothing else does.
3518 16. A malformed maildirsize file could cause Exim to calculate negative values
3519 for the mailbox size or file count. Odd effects could occur as a result.
3520 The maildirsize information is now recalculated if the size or filecount
3523 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
3524 support for a long time. Removed HAVE_SYS_VFS_H.
3526 18. Updated exipick to current release from John Jetmore.
3528 19. Allow an empty sender to be matched against a lookup in an address list.
3529 Previously the only cases considered were a regular expression, or an
3532 20. Exim went into a mad DNS lookup loop when doing a callout where the
3533 host was specified on the transport, if the DNS lookup yielded more than
3536 21. The RFC2047 encoding function was originally intended for short strings
3537 such as real names; it was not keeping to the 75-character limit for
3538 encoded words that the RFC imposes. It now respects the limit, and
3539 generates multiple encoded words if necessary. To be on the safe side, I
3540 have increased the buffer size for the ${rfc2047: expansion operator from
3543 22. Failure to deliver a bounce message always caused it to be frozen, even if
3544 there was an errors_to setting on the router. The errors_to setting is now
3547 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
3548 canonical form (fully expanded) before being placed in
3549 $sender_host_address.
3551 24. Updated eximstats to version 1.33
3553 25. Include certificate and key file names in error message when GnuTLS fails
3554 to set them up, because the GnuTLS error message doesn't include the name
3555 of the failing file when there is a problem reading it.
3557 26. Expand error message when OpenSSL has problems setting up cert/key files.
3560 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
3561 (this can affect the format of dates).
3563 28. exim_tidydb, when checking for the continued existence of a message for
3564 which it has found a message-specific retry record, was not finding
3565 messages that were in split spool directories. Consequently, it was
3566 deleting retry records that should have stayed in existence.
3568 29. eximstats updated to version 1.35
3569 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
3570 1.35 - bugfix such that pie charts by volume are generated correctly
3572 30. The SPA authentication driver was not abandoning authentication and moving
3573 on to the next authenticator when an expansion was forced to fail,
3574 contradicting the general specification for all authenticators. Instead it
3575 was generating a temporary error. It now behaves as specified.
3577 31. The default ordering of permitted cipher suites for GnuTLS was pessimal
3578 (the order specifies the preference for clients). The order is now AES256,
3579 AES128, 3DES, ARCFOUR128.
3581 31. Small patch to Sieve code - explicitly set From: when generating an
3584 32. Exim crashed if a remote delivery caused a very long error message to be
3585 recorded - for instance if somebody sent an entire SpamAssassin report back
3586 as a large number of 550 error lines. This bug was coincidentally fixed by
3587 increasing the size of one of Exim's internal buffers (big_buffer) that
3588 happened as part of the Exiscan merge. However, to be on the safe side, I
3589 have made the code more robust (and fixed the comments that describe what
3592 33. Some experimental protocols are using DNS PTR records for new purposes. The
3593 keys for these records are domain names, not reversed IP addresses. The
3594 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
3595 leaves it alone. Component reversal etc. now happens only for IP addresses.
3598 34. The host_aton() function is supposed to be passed a string that is known
3599 to be a valid IP address. However, in the case of IPv6 addresses, it was
3600 not checking this. This is a hostage to fortune. Exim now panics and dies
3601 if the condition is not met. A case was found where this could be provoked
3602 from a dnsdb PTR lookup with an IPv6 address that had more than 8
3603 components; fortuitously, this particular loophole had already been fixed
3604 by change 4.50/55 or 4.44/33 above.
3606 If there are any other similar loopholes, the new check in host_aton()
3607 itself should stop them being exploited. The report I received stated that
3608 data on the command line could provoke the exploit when Exim was running as
3609 exim, but did not say which command line option was involved. All I could
3610 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
3611 running as the user.
3614 35. There was a buffer overflow vulnerability in the SPA authentication code
3615 (which came originally from the Samba project). I have added a test to the
3616 spa_base64_to_bits() function which I hope fixes it.
3619 36. The daemon start-up calls getloadavg() while still root for those OS that
3620 need the first call to be done as root, but it missed one case: when
3621 deliver_queue_load_max is set with deliver_drop_privilege. This is
3622 necessary for the benefit of the queue runner, because there is no re-exec
3623 when deliver_drop_privilege is set.
3625 37. Caching of lookup data for "hosts =" ACL conditions, when a named host list
3626 was in use, was not putting the data itself into the right store pool;
3627 consequently, it could be overwritten for a subsequent message in the same
3628 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
3631 38. Sometimes the final signoff response after QUIT could fail to get
3632 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
3633 < 0 before doing a fflush(). This bug looks as though it goes back to the
3634 introduction of TLS in release 3.20, but "sometimes" must have been rare
3635 because the tests only now provoked it.
3641 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
3642 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
3643 Now it returns an integer. A number of calls were still expecting a T/F
3644 return. Fortuitously, in all cases, the tests worked in OK situations,
3645 which is the norm. However, things would have gone wrong on any write
3646 failures on the smtp file descriptor. This function is used when sending
3647 messages over SMTP and also when doing verify callouts.
3649 2. When Exim is called to do synchronous delivery of a locally submitted
3650 message (the -odf or -odi options), it no longer closes stderr before doing
3653 3. Implemented the mua_wrapper option.
3655 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
3657 5. Implemented the functions header_remove(), header_testname(),
3658 header_add_at_position(), and receive_remove_recipient(), and exported them
3661 6. If an ACL "warn" statement specified the addition of headers, Exim already
3662 inserted X-ACL-Warn: at the start if there was no header name. However, it
3663 was not making this test for the second and subsequent header lines if
3664 there were newlines in the string. This meant that an invalid header could
3665 be inserted if Exim was badly configured.
3667 7. Allow an ACL "warn" statement to add header lines at the start or after all
3668 the Received: headers, as well as at the end.
3670 8. Added the rcpt_4xx retry error code.
3672 9. Added postmaster_mailfrom=xxx to callout verification option.
3674 10. Added mailfrom=xxxx to the callout verification option, for verify=
3677 11. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
3678 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
3680 12. Inserted some casts to stop certain compilers warning when using pointer
3681 differences as field lengths or precisions in printf-type calls (mostly
3682 affecting debugging statements).
3684 13. Added optional readline() support for -be (dynamically loaded).
3686 14. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
3687 same clock tick as a message's arrival, so that its received time was the
3688 same as the "first fail" time on the retry record, and that message
3689 remained on the queue past the ultimate address timeout, every queue runner
3690 would try a delivery (because it was past the ultimate address timeout) but
3691 after another failure, the ultimate address timeout, which should have then
3692 bounced the address, did not kick in. This was a "< instead of <=" error;
3693 in most cases the first failure would have been in the next clock tick
3694 after the received time, and all would be well.
3696 15. The special items beginning with @ in domain lists (e.g. @mx_any) were not
3697 being recognized when the domain list was tested by the match_domain
3698 condition in an expansion string.
3700 16. Added the ${str2b64: operator.
3702 17. Exim was always calling setrlimit() to set a large limit for the number of
3703 processes, without checking whether the existing limit was already
3704 adequate. (It did check for the limit on file descriptors.) Furthermore,
3705 errors from getrlimit() and setrlimit() were being ignored. Now they are
3706 logged to the main and panic logs, but Exim does carry on, to try to do its
3707 job under whatever limits there are.
3709 18. Imported PCRE 5.0.
3711 19. Trivial typo in log message " temporarily refused connection" (the leading
3714 20. If the log selector return_path_on_delivery was set and an address was
3715 redirected to /dev/null, the delivery process crashed because it assumed
3716 that a return path would always be set for a "successful" delivery. In this
3717 case, the whole delivery is bypassed as an optimization, and therefore no
3720 21. Internal re-arrangement: the function for sending a challenge and reading
3721 a response while authentication was assuming a zero-terminated challenge
3722 string. It's now changed to take a pointer and a length, to allow for
3723 binary data in such strings.
3725 22. Added the cyrus_sasl authenticator (code supplied by MBM).
3727 23. Exim was not respecting finduser_retries when seeking the login of the
3728 uid under which it was called; it was always trying 10 times. (The default
3729 setting of finduser_retries is zero.) Also, it was sleeping after the final
3730 failure, which is pointless.
3732 24. Implemented tls_on_connect_ports.
3734 25. Implemented acl_smtp_predata.
3736 26. If the domain in control=submission is set empty, Exim assumes that the
3737 authenticated id is a complete email address when it generates From: or
3738 Sender: header lines.
3740 27. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
3741 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
3742 chown and chgrp in /bin and hostname in /usr/bin.
3744 28. Exim was keeping the "process log" file open after each use, just as it
3745 does for the main log. This opens the possibility of it remaining open for
3746 long periods when the USR1 signal hits a daemon. Occasional processlog
3747 errors were reported, that could have been caused by this. Anyway, it seems
3748 much more sensible not to leave this file open at all, so that is what now
3751 29. The long-running daemon process does not normally write to the log once it
3752 has entered its main loop, and it closes the log before doing so. This is
3753 so that log files can straightforwardly be renamed and moved. However,
3754 there are a couple of unusual error situations where the daemon does write
3755 log entries, and I had neglected to close the log afterwards.
3757 30. The text of an SMTP error response that was received during a remote
3758 delivery was being truncated at 512 bytes. This is too short for some of
3759 the long messages that one sometimes sees. I've increased the limit to
3762 31. It is now possible to make retry rules that apply only when a message has a
3763 specific sender, in particular, an empty sender.
3765 32. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
3766 it possible to be selective about when SMTP synchronization is enforced.
3768 33. Added "control = caseful_local_part" and "control = "caselower_local_part".
3770 32. Implemented hosts_connection_nolog.
3772 33. Added an ACL for QUIT.
3774 34. Setting "delay_warning=" to disable warnings was not working; it gave a
3777 35. Added mailbox_size and mailbox_filecount to appendfile.
3779 36. Added control = no_multiline_responses to ACLs.
3781 37. There was a bug in the logic of the code that waits for the clock to tick
3782 in the case where the clock went backwards by a substantial amount such
3783 that the microsecond fraction of "now" was more than the microsecond
3784 fraction of "then" (but the whole seconds number was less).
3786 38. Added support for the libradius Radius client library this is found on
3787 FreeBSD (previously only the radiusclient library was supported).
3793 1. When certain lookups returned multiple values in the form name=value, the
3794 quoting of the values was not always being done properly. Specifically:
3795 (a) If the value started with a double quote, but contained no whitespace,
3797 (b) If the value contained whitespace other than a space character (i.e.
3798 tabs or newlines or carriage returns) it was not quoted.
3799 This fix has been applied to the mysql and pgsql lookups by writing a
3800 separate quoting function and calling it from the lookup code. The fix
3801 should probably also be applied to nisplus, ibase and oracle lookups, but
3802 since I cannot test any of those, I have not disturbed their existing code.
3804 2. A hit in the callout cache for a specific address caused a log line with no
3805 reason for rejecting RCPT. Now it says "Previous (cached) callout
3806 verification failure".
3808 3. There was an off-by-one bug in the queryprogram router. An over-long
3809 return line was truncated at 256 instead of 255 characters, thereby
3810 overflowing its buffer with the terminating zero. As well as fixing this, I
3811 have increased the buffer size to 1024 (and made a note to document this).
3813 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
3814 when Exim is waiting for an SMTP response from a remote server, Exim
3815 restarts its select() call on the socket, thereby resetting its timeout.
3816 This is not a problem when such interrupts are rare. Somebody set up a cron
3817 job to run exiwhat every 2 minutes, which is less than the normal select()
3818 timeout (5 or 10 minutes). This meant that the select() timeout never
3819 kicked in because it was always reset. I have fixed this by comparing the
3820 time when an interrupt arrives with the time at the start of the first call
3821 to select(). If more time than the timeout has elapsed, the interrupt is
3822 treated as a timeout.
3824 5. Some internal re-factoring in preparation for the addition of Sieve
3825 extensions (by MH). In particular, the "personal" test is moved to a
3826 separate function, and given an option for scanning Cc: and Bcc: (which is
3827 not set for Exim filters).
3829 6. When Exim created an email address using the login of the caller as the
3830 local part (e.g. when creating a From: or Sender: header line), it was not
3831 quoting the local part when it contained special characters such as @.
3833 7. Installed new OpenBSD configuration files.
3835 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3836 try to make them clearer.
3838 9. Callout options, other than the timeout value, were being ignored when
3839 verifying sender addresses in header lines. For example, when using
3841 verify = header_sender/callout=no_cache
3843 the cache was (incorrectly) being used.
3845 10. Added a missing instance of ${EXE} to the exim_install script; this affects
3846 only the Cygwin environment.
3848 11. When return_path_on_delivery was set as a log selector, if different remote
3849 addresses in the same message used different return paths and parallel
3850 remote delivery occurred, the wrong values would sometimes be logged.
3851 (Whenever a remote delivery process finished, the return path value from
3852 the most recently started remote delivery process was logged.)
3854 12. RFC 3848 specifies standard names for the "with" phrase in Received: header
3855 lines when AUTH and/or TLS are in use. This is the "received protocol"
3856 field. Exim used to use "asmtp" for authenticated SMTP, without any
3857 indication (in the protocol name) for TLS use. Now it follows the RFC and
3858 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3859 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3860 names appear in log lines as well as in Received: header lines.
3862 13. Installed MH's patches for Sieve to add the "copy" and "vacation"
3863 extensions, and comparison tests, and to fix some bugs.
3865 14. Changes to the "personal" filter test:
3867 (1) The test was buggy in that it was just doing the equivalent of
3868 "contains" tests on header lines. For example, if a user's address was
3869 anne@some.where, the "personal" test would incorrectly be true for
3871 To: susanne@some.where
3873 This test is now done by extracting each address from the header in turn,
3874 and checking the entire address. Other tests that are part of "personal"
3875 are now done using regular expressions (for example, to check local parts
3876 of addresses in From: header lines).
3878 (2) The list of non-personal local parts in From: addresses has been
3879 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3880 taken from the Sieve specification recommendations.
3882 (3) If the message contains any header line starting with "List-" it is
3883 treated as non-personal.
3885 (4) The test for "circular" in the Subject: header line has been removed
3886 because it now seems ill-conceived.
3888 15. Minor typos in src/EDITME comments corrected.
3890 16. Installed latest exipick from John Jetmore.
3892 17. If headers_add on a router specified a text string that was too long for
3893 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3894 of string_sprintf() is now avoided.
3896 18. $message_body_size was not set (it was always zero) when running the DATA
3897 ACL and the local_scan() function.
3899 19. For the "mail" command in an Exim filter, no default was being set for
3900 the once_repeat time, causing a random time value to be used if "once" was
3901 specified. (If the value happened to be <= 0, no repeat happened.) The
3902 default is now 0s, meaning "never repeat". The "vacation" command was OK
3903 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3904 (I found it when inspecting the code).
3906 20. There is now an overall timeout for performing a callout verification. It
3907 defaults to 4 times the callout timeout, which applies to individual SMTP
3908 commands during the callout. The overall timeout applies when there is more
3909 than one host that can be tried. The timeout is checked before trying the
3910 next host. This prevents very long delays if there are a large number of
3911 hosts and all are timing out (e.g. when the network connections are timing
3912 out). The value of the overall timeout can be changed by specifying an
3913 additional sub-option for "callout", called "maxwait". For example:
3915 verify = sender/callout=5s,maxwait=20s
3917 21. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3918 to the end before writing, but this should make it even safer).
3920 22. Exim was forgetting that it had advertised PIPELINING for the second and
3921 subsequent messages on an SMTP connection. It was also not resetting its
3922 memory on STARTTLS and an internal HELO.
3924 23. When Exim logs an SMTP synchronization error within a session, it now
3925 records whether PIPELINING has been advertised or not.
3927 24. Added 3 instances of "(long int)" casts to time_t variables that were being
3928 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3929 rather than long int.
3931 25. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3933 26. Added the never_mail option to autoreply.
3939 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3940 crash if the getsockname() call failed; this can happen if a connection is
3941 closed very soon after it is established. The problem was simply in the
3942 order in which certain operations were done, causing Exim to try to write
3943 to the SMTP stream before it had set up the file descriptor. The bug has
3944 been fixed by making things happen in the correct order.
3950 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3951 before the connection was closed, thus losing the rejection response.
3953 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3954 some early Solaris releases, but causes trouble in current releases where
3955 socklen_t is defined.
3957 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3960 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3963 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3964 that releasing the top of it at the end releases what was used for sub-
3965 expansions (unless the block got too big). However, discard this block if
3966 the first thing is a variable or header, so that we can use its block when
3967 it is dynamic (useful for very large $message_headers, for example).
3969 6. Lookups now cache *every* query, not just the most recent. A new, separate
3970 store pool is used for this. It can be recovered when all lookup caches are
3971 flushed. Lookups now release memory at the end of their result strings.
3972 This has involved some general refactoring of the lookup sources.
3974 7. Some code has been added to the store_xxx() functions to reduce the amount
3975 of flapping under certain conditions.
3977 8. log_incoming_interface used to affect only the <= reception log lines. Now
3978 it causes the local interface and port to be added to several more SMTP log
3979 lines, for example "SMTP connection from", and rejection lines.
3981 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3983 10. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3985 11. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3986 could be overwritten at the end of the current message (or the start of a
3987 new message if it was set in a HELO ACL). The value is now preserved for
3988 the duration of the SMTP connection.
3990 12. If a transport had a headers_rewrite setting, and a matching header line
3991 contained an unqualified address, that address was qualified, even if it
3992 did not match any rewriting rules. The underlying bug was that the values
3993 of the flags that permit the existence of unqualified sender and recipient
3994 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3995 non-local messages, and by -bnq for local messages) were not being
3996 preserved with the message after it was received.
3998 13. When Exim was logging an SMTP synchronization error, it could sometimes log
3999 "next input=" as part of the text comprising the host identity instead of
4000 the correct text. The code was using the same buffer for two different
4001 strings. However, depending on which order the printing function evaluated
4002 its arguments, the bug did not always show up. Under Linux, for example, my
4003 test suite worked just fine.
4005 14. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
4006 doesn't work with some older versions of Perl. It has been changed to "my",
4007 which in any case is probably the better facility to use.
4009 15. A really picky compiler found some instances of statements for creating
4010 error messages that either had too many or two few arguments for the format
4013 16. The size of the buffer for calls to the DNS resolver has been increased
4014 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
4015 for addresses that have a lot of PTR records. This alleviates a problem; it
4016 does not fully solve it.
4018 17. A dnsdb lookup for PTR records that receives more data than will fit in the
4019 buffer now truncates the list and logs the incident, which is the same
4020 action as happens when Exim is looking up a host name and its aliases.
4021 Previously in this situation something unpredictable would happen;
4022 sometimes it was "internal error: store_reset failed".
4024 18. If a server dropped the connection unexpectedly when an Exim client was
4025 using GnuTLS and trying to read a response, the client delivery process
4026 crashed while trying to generate an error log message.
4028 19. If a "warn" verb in an ACL added multiple headers to a message in a single
4029 string, for example:
4031 warn message = H1: something\nH2: something
4033 the text was added as a single header line from Exim's point of view
4034 though it ended up OK in the delivered message. However, searching for the
4035 second and subsequent header lines using $h_h2: did not work. This has been
4036 fixed. Similarly, if a system filter added multiple headers in this way,
4037 the routers could not see them.
4039 20. Expanded the error message when iplsearch is called with an invalid key to
4040 suggest using net-iplsearch in a host list.
4042 21. When running tests using -bh, any delays imposed by "delay" modifiers in
4043 ACLs are no longer actually imposed (and a message to that effect is
4046 22. If a "gecos" field in a passwd entry contained escaped characters, in
4047 particular, if it contained a \" sequence, Exim got it wrong when building
4048 a From: or a Sender: header from that name. A second bug also caused
4049 incorrect handling when an unquoted " was present following a character
4050 that needed quoting.
4052 23. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
4053 was not being matched caselessly.
4055 24. Arranged for all hyphens in the exim.8 source to be escaped with
4058 25. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
4059 properly. Recipient callout cache records were still being keyed to include
4060 the sender, even when use_sender was set false. This led to far more
4061 callouts that were necessary. The sender is no longer included in the key
4062 when use_sender is false.
4064 26. Added "control = submission" modifier to ACLs.
4066 27. Added the ${base62d: operator to decode base 62 numbers.
4068 28. dnsdb lookups can now access SRV records.
4070 29. CONFIGURE_OWNER can be set at build time to define an alternative owner for
4071 the configuration file.
4073 30. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
4074 (-v) mode. This makes the output for a verbose queue run more intelligible.
4076 31. Added a use_postmaster feature to recipient callouts.
4078 32. Added the $body_zerocount variable, containing the number of binary zero
4079 bytes in the message body.
4081 33. The time of last modification of the "new" subdirectory is now used as the
4082 "mailbox time last read" when there is a quota error for a maildir
4085 34. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
4087 35. Added +ignore_unknown as a special item in host lists.
4089 36. Code for decoding IPv6 addresses in host lists is now included, even if
4090 IPv6 support is not being compiled. This fixes a bug in which an IPv6
4091 address was recognized as an IP address, but was then not correctly decoded
4092 into binary, causing unexpected and incorrect effects when compared with
4099 1. Very minor rewording of debugging text in manualroute to say "list of
4100 hosts" instead of "hostlist".
4102 2. If verify=header_syntax was set, and a header line with an unqualified
4103 address (no domain) and a large number of spaces between the end of the
4104 name and the colon was received, the reception process suffered a buffer
4105 overflow, and (when I tested it) crashed. This was caused by some obsolete
4106 code that should have been removed. The fix is to remove it!
4108 3. When running in the test harness, delay a bit after writing a bounce
4109 message to get a bit more predictability in the log output.
4111 4. Added a call to search_tidyup() just before forking a reception process. In
4112 theory, someone could use a lookup in the expansion of smtp_accept_max_
4113 per_host which, without the tidyup, could leave open a database connection.
4115 5. Added the variables $recipient_data and $sender_data which get set from a
4116 lookup success in an ACL "recipients" or "senders" condition, or a router
4117 "senders" option, similar to $domain_data and $local_part_data.
4119 6. Moved the writing of debug_print from before to after the "senders" test
4122 7. Change 4.31/66 (moving the time when the Received: is generated) caused
4123 problems for message scanning, either using a data ACL, or using
4124 local_scan() because the Received: header was not generated till after they
4125 were called (in order to set the time as the time of reception completion).
4126 I have revised the way this works. The header is now generated after the
4127 body is received, but before the ACL or local_scan() are called. After they
4128 are run, the timestamp in the header is updated.
4134 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
4135 before starting a queue runner without re-exec. This happened only when
4136 deliver_drop_privilege was set or when the Exim user was set to root. The
4137 effect of the bug was that timeouts during subsequent deliveries caused
4138 crashes instead of being properly handled. The handler is now left at its
4139 default (and expected) setting.
4141 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
4142 message, again when deliver_drop_privilege is set or Exim is run as root.
4143 The bug described in (1) was not present in this case, but the tidying up
4144 of the other signals was missing. I have made the two cases consistent.
4146 3. The ignore_target_hosts setting on a manualroute router was being ignored
4147 for hosts that were looked up using the /MX notation.
4149 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
4152 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
4153 operated on the sender address. After changing the $sender_address to <>
4154 for the sender address verify, Exim was re-instated it as the original
4155 (before rewriting) address, but remembering that it had rewritten it, so it
4156 wasn't rewriting it again. This bug also had the effect of breaking the
4157 sender address verification caching when the sender address was rewritten.
4159 6. The ignore_target_hosts option was being ignored by the ipliteral router.
4160 This has been changed so that if the ip literal address matches
4161 ignore_target_hosts, the router declines.
4163 7. Added expansion conditions match_domain, match_address, and match_local_
4164 part (NOT match_host).
4166 8. The placeholder for the Received: header didn't have a length field set.
4168 9. Added code to Exim itself and to exim_lock to test for a specific race
4169 condition that could lead to file corruption when using MBX delivery. The
4170 issue is with the lockfile that is created in /tmp. If this file is removed
4171 after a process has opened it but before that process has acquired a lock,
4172 there is the potential for a second process to recreate the file and also
4173 acquire a lock. This could lead to two Exim processes writing to the file
4174 at the same time. The added code performs the same test as UW imapd; it
4175 checks after acquiring the lock that its file descriptor still refers to
4176 the same named file.
4178 10. The buffer for building added header lines was of fixed size, 8192 bytes.
4179 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
4182 11. Added the smtp_active_hostname option. If used, this will typically be made
4183 to depend on the incoming interface address. Because $interface_address is
4184 not set up until the daemon has forked a reception process, error responses
4185 that can happen earlier (such as "too many connections") no longer contain
4188 12. If an expansion in a condition on a "warn" statement fails because a lookup
4189 defers, the "warn" statement is abandoned, and the next ACL statement is
4190 processed. Previously this caused the whole ACL to be aborted.
4192 13. Added the iplsearch lookup type.
4194 14. Added ident_timeout as a log selector.
4196 15. Added tls_certificate_verified as a log selector.
4198 16. Added a global option tls_require_ciphers (compare the smtp transport
4199 option of the same name). This controls incoming TLS connections.
4201 17. I finally figured out how to make tls_require_ciphers do a similar thing
4202 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
4203 before starting the TLS session.
4205 18. Tabs are now shown as \t in -bP output.
4207 19. If the log selector return_path_on_delivery was set, Exim crashed when
4208 bouncing a message because it had too many Received: header lines.
4210 20. If two routers both had headers_remove settings, and the first one included
4211 a superfluous trailing colon, the final name in the first list and the
4212 first name in the second list were incorrectly joined into one item (with a
4213 colon in the middle).
4219 1. Added -C and -D options to the exinext utility, mainly to make it easier
4220 to include in the automated testing, but these could be helpful when
4221 multiple configurations are in use.
4223 2. The exinext utility was not formatting the output nicely when there was
4224 an alternate port involved in the retry record key, nor when there was a
4225 message id as well (for retries that were specific to a specific message
4226 and a specific host). It was also confused by IPv6 addresses, because of
4227 the additional colons they contain. I have fixed the IPv4 problem, and
4228 patched it up to do a reasonable job for IPv6.
4230 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
4231 delivery, the log line now contains "pipelined" if PIPELINING was used.
4233 4. An SMTP transport process used to panic and die if the bind() call to set
4234 an explicit outgoing interface failed. This has been changed; it is now
4235 treated in the same way as a connect() failure.
4237 5. A reference to $sender_host_name in the part of a conditional expansion
4238 that was being skipped was still causing a DNS lookup. This no longer
4241 6. The def: expansion condition was not recognizing references to header lines
4242 that used bh_ and bheader_.
4244 7. Added the _cache feature to named lists.
4246 8. The code for checking quota_filecount in the appendfile transport was
4247 allowing one more file than it should have been.
4249 9. For compatibility with Sendmail, the command line option
4257 and sets the incoming protocol and host name (for trusted callers). The
4258 host name and its colon can be omitted when only the protocol is to be set.
4259 Note the Exim already has two private options, -pd and -ps, that refer to
4260 embedded Perl. It is therefore impossible to set a protocol value of "d" or
4261 "s", but I don't think that's a major issue.
4263 10. A number of refactoring changes to the code, none of which should affect
4266 (a) The number of logging options was getting close to filling up the
4267 32-bit word that was used as a bit map. I have split them into two classes:
4268 those that are passed in the argument to log_write(), and those that are
4269 only ever tested independently outside of that function. These are now in
4270 separate 32-bit words, so there is plenty of room for expansion again.
4271 There is no change in the user interface or the logging behaviour.
4273 (b) When building, for example, log lines, the code previously used a
4274 macro that called string_cat() twice, in order to add two strings. This is
4275 not really sufficiently general. Furthermore, there was one instance where
4276 it was actually wrong because one of the argument was used twice, and in
4277 one call a function was used. (As it happened, calling the function twice
4278 did not affect the overall behaviour.) The macro has been replaced by a
4279 function that can join an arbitrary number of extra strings onto a growing
4282 (c) The code for expansion conditions now uses a table and a binary chop
4283 instead of a serial search (which was left over from when there were very
4284 few conditions). Also, it now recognizes conditions like "pam" even when
4285 the relevant support is not compiled in: a suitably worded error message is
4286 given if an attempt is made to use such a condition.
4288 11. Added ${time_interval:xxxxx}.
4290 12. A bug was causing one of the ddress fields not to be passed back correctly
4291 from remote delivery subprocesses. The field in question was not being
4292 subsequently used, so this caused to problems in practice.
4294 13. Added new log selectors queue_time and deliver_time.
4296 14. Might have fixed a bug in maildirsizefile handling that threw up
4297 "unexpected character" debug warnings, and recalculated the data
4298 unnecessarily. In any case, I expanded the warning message to give more
4301 15. Added the message "Restricted characters in address" to the statements in
4302 the default ACL that block characters like @ and % in local parts.
4304 16. Change 71 for release 4.31 proved to be much less benign that I imagined.
4305 Three changes have been made:
4307 (a) There was a serious bug; a negative response to MAIL caused the whole
4308 recipient domain to be cached as invalid, thereby blocking all messages
4309 to all local parts at the same domain, from all senders. This bug has
4310 been fixed. The domain is no longer cached after a negative response to
4311 MAIL if the sender used is not empty.
4313 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
4316 (c) A new callout option, "use_sender" has been added for people who want
4317 the modified behaviour.
4323 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
4326 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
4327 indeed breaks things for older releases.
4329 3. Added additional logging to the case where there is a problem reading data
4330 from a filter that is running in a subprocess using a pipe, in order to
4331 try to track down a specific problem.
4333 4. Testing facility fudge: when running in the test harness and attempting
4334 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
4335 getting "No route to host". Convert this to a timeout.
4337 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
4340 6. Some OS don't have socklen_t but use size_t instead. This affects the
4341 fifth argument of getsockopt() amongst other things. This is now
4342 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
4343 can be set for individual OS. I have set it for SunOS5, OSF1, and
4344 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
4345 some earlier ones do not.
4347 7. Change 4.30/15 was not doing the test caselessly.
4349 8. The standard form for an IPv6 address literal was being rejected by address
4350 parsing in, for example, MAIL and RCPT commands. An example of this kind of
4351 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4352 this, as well as the form without the "IPv6" on the front (but only when
4353 address literals are enabled, of course).
4355 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
4357 10. Exim crashed if a message with an empty sender address specified by -f
4358 encountered a router with an errors_to setting. This could be provoked only
4359 by a command such as
4363 where an empty string was supplied; "<>" did not hit this bug.
4365 11. Installed PCRE release 4.5.
4367 12. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
4368 remained set. It is now erased.
4370 13. exiqgrep wasn't working on MacOS X because it didn't correctly compute
4371 times from message ids (which are base 36 rather than the normal 62).
4373 14. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
4374 were being counted as actual protocol errors, and logged if the log
4375 selector +smtp_protocol_error was set. One cannot be perfect in this test,
4376 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
4377 and DATA following a set of rejected RCPTs do not count as protocol errors.
4378 In other words, Exim assumes they were pipelined, though this may not
4379 actually be the case. Of course, in all cases the client gets an
4380 appropriate error code.
4382 15. If a lookup fails in an ACL condition, a message about the failure may
4383 be available; it is used if testing the ACL cannot continue, because most
4384 such messages specify what the cause of the deferral is. However, some
4385 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
4386 that caused an old message to be retained and used if a later statement
4387 caused a defer, replacing the real cause of the deferral.
4389 16. If an IP address had so many PTR records that the DNS lookup buffer
4390 was not large enough to hold them, Exim could crash while trying to process
4391 the truncated data. It now detects and logs this case.
4393 17. Further to 4.21/58, another change has been made: if (and only if) the
4394 first line of a message (the first header line) ends with CRLF, a bare LF
4395 in a subsequent header line has a space inserted after it, so as not to
4396 terminate the header.
4398 18. Refactoring: tidied an ugly bit of code in appendfile that copied data
4399 unnecessarily, used atoi() instead of strtol(), and didn't check the
4400 termination when getting file sizes from file names by regex.
4402 19. Completely re-implemented the support for maildirsize files, in the light
4403 of a number of problems with the previous contributed implementation
4404 (4.30/29). In particular:
4406 . If the quota is zero, the maildirsize file is maintained, but no quota is
4409 . If the maildir directory does not exist, it is created before any attempt
4410 to write a maildirsize file.
4412 . The quota value in the file is just a cache; if the quota is changed in
4413 the transport, the new value overrides.
4415 . A regular expression is available for excluding directories from the
4418 20. The autoreply transport checks the characters in options that define the
4419 message's headers; it allows continued headers, but it was checking with
4420 isspace() after an embedded newline instead of explicitly looking for a
4423 21. If all the "regular" hosts to which an address was routed had passed their
4424 expiry times, and had not reached their retry times, the address was
4425 bounced, even if fallback hosts were defined. Now Exim should go on to try
4428 22. Increased buffer sizes in the callout code from 1024 to 4096 to match the
4429 equivalent code in the SMTP transport. Some hosts send humungous responses
4430 to HELO/EHLO, more than 1024 it seems.
4432 23. Refactoring: code in filter.c used (void *) for "any old type" but this
4433 gives compiler warnings in some environments. I've now done it "properly",
4436 24. The replacement for inet_ntoa() that is used with gcc on IRIX systems
4437 (because of problems with the built-in one) was declared to return uschar *
4438 instead of char *, causing compiler failure.
4440 25. Fixed a file descriptor leak when processing alias/forward files.
4442 26. Fixed a minor format string issue in dbfn.c.
4444 27. Typo in exim.c: ("dmbnz" for "dbmnz").
4446 28. If a filter file refered to $h_xxx or $message_headers, and the headers
4447 contained RFC 2047 "words", Exim's memory could, under certain conditions,
4450 29. When a sender address is verified, it is cached, to save repeating the test
4451 when there is more than one recipient in a message. However, when the
4452 verification involves a callout, it is possible for different callout
4453 options to be set for different recipients. It is too complicated to keep
4454 track of this in the cache, so now Exim always runs a verification when a
4455 callout is required, relying on the callout cache for the optimization.
4456 The overhead is duplication of the address routing, but this should not be
4459 30. Fixed a bug in callout caching. If a RCPT command caused the sender address
4460 to be verified with callout=postmaster, and the main callout worked but the
4461 postmaster check failed, the verification correctly failed. However, if a
4462 subsequent RCPT command asked for sender verification *without* the
4463 postmaster check, incorrect caching caused this verification also to fail,
4466 31. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
4467 it was not caching the DNS options (qualify_single, search_parents) that
4468 were used when the lookup failed. A subsequent lookup with different
4469 options therefore always gave the same answer, though there were cases
4470 where it should not have. (Example: a "domains = !$mx_any" option on a
4471 dnslookup router: the "domains" option is always processed without any
4472 widening, but the router might have qualify_single set.) Now Exim uses the
4473 cached value only when the same options are set.
4475 32. Added John Jetmore's "exipick" utility to the distribution.
4477 33. GnuTLS: When an attempt to start a TLS session fails for any reason other
4478 than a timeout (e.g. a certificate is required, and is not provided), an
4479 Exim server now closes the connection immediately. Previously it waited for
4480 the client to close - but if the client is SSL, it seems that they each
4481 wait for each other, leading to a delay before one of them times out.
4483 34: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
4484 maintained 0.8.x compatibility because I don't think many are using it, and
4485 it is clearly obsolete.
4487 35. Added TLS support for CRLs: a tls_crl global option and one for the smtp
4490 36. OpenSSL: $tls_certificate_verified was being set to 1 even if the
4491 client certificate was expired. A simple patch fixes this, though I don't
4492 understand the full logic of why the verify callback is called multiple
4495 37. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
4496 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
4497 which causes problems with some clients (such as the Certicom SSL Plus
4498 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
4499 disables the coutermeasure allowing Eudora to connect."
4501 38. Exim was not checking that a write() to a log file succeeded. This could
4502 lead to Bad Things if a log got too big, in particular if it hit a file
4503 size limit. Exim now panics and dies if it cannot write to a log file, just
4504 as it does if it cannot open a log file.
4506 39. Modified OS/Makefile-Linux so that it now contains
4508 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
4510 The two -D definitions ensure that Exim is compiled with large file
4511 support, which makes it possible to handle log files that are bigger than
4514 40. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
4515 instance) a domain was checked against a named list that involved a lookup,
4516 causing $domain_data to be set, then another domain was checked against the
4517 same list, then the first domain was re-checked, the value of $domain_data
4518 after the final check could be wrong. In particular, if the second check
4519 failed, it could be set empty. This bug probably also applied to
4522 41. The strip_trailing_dot option was not being applied to the address given
4523 with the -f command-line option.
4525 42. The code for reading a message's header from the spool was incrementing
4526 $received_count, but never initializing it. This meant that the value was
4527 incorrect (doubled) while delivering a message in the same process in which
4528 it was received. In the most common configuration of Exim, this never
4529 happens - a fresh exec is done - but it can happen when
4530 deliver_drop_privilege is set.
4532 43. When Exim logs an SMTP synchronization error - client data sent too soon -
4533 it now includes up to 150 characters of the unexpected data in the log
4536 44. The exim_dbmbuild utility uses fixed size buffers for reading input lines
4537 and building data strings. The size of both of these buffers was 10 000
4538 bytes - far larger than anybody would *ever* want, thought I. Needless to
4539 say, somebody hit the limit. I have increased the maximum line length to
4540 20 000 and the maximum data length of concatenated lines to 100 000. I have
4541 also fixed two bugs, because there was no checking on these buffers. Tsk,
4542 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
4543 buffer is too small.
4545 45. The exim_dbmbuild utility did not support quoted keys, as Exim does in
4546 lsearch lookups. Now it does.
4548 46. When parsing a route_list item in a manualroute router, a fixed-length
4549 buffer was used for the list of hosts. I made this 1024 bytes long,
4550 thinking that nobody would ever have a list of hosts that long. Wrong.
4551 Somebody had a whole pile of complicated expansion conditions, and the
4552 string was silently truncated, leading to an expansion error. It turns out
4553 that it is easier to change to an unlimited length (owing to other changes
4554 that have happened since this code was originally written) than to build
4555 structure for giving a limitation error. The length of the item that
4556 expands into the list of hosts is now unlimited.
4558 47. The lsearch lookup could not handle data where the length of text line was
4559 more than 4095 characters. Such lines were truncated, leading to shortened
4560 data being returned. It should now handle lines of any length.
4562 48. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
4563 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
4566 49. Cosmetic tidy to scripts like exicyclog that are generated by globally
4567 replacing strings such as BIN_DIRECTORY in a source file: the replacement
4568 no longer happens in comment lines. A list of replacements is now placed
4569 at the head of all of the source files, except those whose only change is
4570 to replace PERL_COMMAND in the very first #! line.
4572 50. Replaced the slow insertion sort in queue.c, for sorting the list of
4573 messages on the queue, with a bottom-up merge sort, using code contributed
4574 by Michael Haardt. This should make operations like -bp somewhat faster on
4575 large queues. It won't affect queue runners, except when queue_run_in_order
4578 51. Installed eximstats 1.31 in the distribution.
4580 52. Added support for SRV lookups to the dnslookup router.
4582 53. If an ACL referred to $message_body or $message_body_end, the value was not
4583 reset for any messages that followed in the same SMTP session.
4585 54. The store-handling optimization for building very long strings was not
4586 differentiating between the different store pools. I don't think this
4587 actually made any difference in practice, but I've tidied it.
4589 55. While running the routers to verify a sender address, $sender_address
4590 was still set to the sender address. This is wrong, because when routing to
4591 send a bounce to the sender, it would be empty. Therefore, I have changed
4592 it so that, while verifying a sender address, $sender_address is set to <>.
4593 (There is no change to what happens when verifying a recipient address.)
4595 56. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
4596 target A or AAAA records (if not already returned) without resetting the
4597 qualify_single or search_parents options of the DNS resolver. These are
4598 inappropriate in this case because the targets of MX and SRV records must
4599 be FQDNs. A broken DNS record could cause trouble if it happened to have a
4600 target that, when qualified, matched something in the local domain. These
4601 two options are now turned off when doing these lookups.
4603 57. It seems that at least some releases of Reiserfs (which does not have the
4604 concept of a fixed number of inodes) returns zero and not -1 for the
4605 number of available inodes. This interacted badly with check_spool_inodes,
4606 which assumed that -1 was the "no such thing" setting. What I have done is
4607 to check that the total number of inodes is greater than zero before doing
4608 the test of how many are available.
4610 58. When a "warn" ACL statement has a log_message modifier, the message is
4611 remembered, and not repeated. This is to avoid a lot of repetition when a
4612 message has many recipients that cause the same warning to be written.
4613 Howewer, Exim was preserving the list of already written lines for an
4614 entire SMTP session, which doesn't seem right. The memory is now reset if a
4615 new message is started.
4617 59. The "rewrite" debugging flag was not showing the result of rewriting in the
4618 debugging output unless log_rewrite was also set.
4620 60. Avoid a compiler warning on 64-bit systems in dsearch.c by avoiding the use
4621 of (int)(handle) when we know that handle contains (void *)(-1).
4623 61. The Exim daemon panic-logs an error return when it closes the incoming
4624 connection. However "connection reset by peer" seems to be common, and
4625 isn't really an error worthy of noting specially, so that particular error
4628 62. When Exim is trying to find all the local interfaces, it used to panic and
4629 die if the ioctl to get the interface flags failed. However, it seems that
4630 on at least one OS (Solaris 9) it is possible to have an interface that is
4631 included in the list of interfaces, but for which you get a failure error
4632 for this call. This happens when the interface is not "plumbed" into a
4633 protocol (i.e. neither IPv4 nor IPv6). I've changed the code so that a
4634 failure of the "get flags" call assumes that the interface is down.
4636 63. Added a ${eval10: operator, which assumes all numbers are decimal. This
4637 makes life easier for people who are doing arithmetic on fields extracted
4638 from dates, where you often get leading zeros that should not be
4639 interpreted as octal.
4641 64. Added qualify_domain to the redirect router, to override the global
4644 65. If a pathologically long header line contained very many addresses (the
4645 report of this problem mentioned 10 000) and each of them was rewritten,
4646 Exim could use up a very large amount of memory. (It kept on making new
4647 copies of the header line as it rewrote, and never released the old ones.)
4648 At the expense of a bit more processing, the header rewriting function has
4649 been changed so that it no longer eats memory in this way.
4651 66. The generation of the Received: header has been moved from the time that a
4652 message starts to be received, to the time that it finishes. The timestamp
4653 in the Received: header should now be very close to that of the <= log
4654 line. There are two side-effects of this change:
4656 (a) If a message is rejected by a DATA or non-SMTP ACL or local_scan(), the
4657 logged header lines no longer include the local Received: line, because
4658 it has not yet been created. The same applies to a copy of the message
4659 that is returned to a non-SMTP sender when a message is rejected.
4661 (b) When a filter file is tested using -bf, no additional Received: header
4662 is added to the test message. After some thought, I decided that this
4665 This change does not affect the value of $received_for. It is still set
4666 after address rewriting, but before local_scan() is called.
4668 67. Installed the latest Cygwin-specific files from the Cygwin maintainer.
4670 68. GnuTLS: If an empty file is specified for tls_verify_certificates, GnuTLS
4671 gave an unhelpful panic error message, and a defer error. I have managed to
4672 change this behaviour so that it now rejects any supplied certificate,
4673 which seems right, as the list of acceptable certificates is empty.
4675 69. OpenSSL: If an empty file is specified for tls_verify_certificates, OpenSSL
4676 gave an unhelpful defer error. I have not managed to make this reject any
4677 supplied certificates, but the error message it gives is "no certificate
4678 supplied", which is not helpful.
4680 70. exigrep's output now also includes lines that are not associated with any
4681 message, but which match the given pattern. Implemented by a patch from
4682 Martin Sluka, which also tidied up the Perl a bit.
4684 71. Recipient callout verification, like sender verification, was using <> in
4685 the MAIL FROM command. This isn't really the right thing, since the actual
4686 sender may affect whether the remote host accepts the recipient or not. I
4687 have changed it to use the actual sender in the callout; this means that
4688 the cache record is now keyed on a recipient/sender pair, not just the
4689 recipient address. There doesn't seem to be a real danger of callout loops,
4690 since a callout by the remote host to check the sender would use <>.
4691 [SEE ABOVE: changed after hitting problems.]
4693 72. Exim treats illegal SMTP error codes that do not begin with 4 or 5 as
4694 temporary errors. However, in the case of such a code being given after
4695 the end of a data transmission (i.e. after ".") Exim was failing to write
4696 a retry record for the message. (Yes, there was some broken host that was
4697 actually sending 8xx at this point.)
4699 73. An unknown lookup type in a host list could cause Exim to panic-die when
4700 the list was checked. (An example that provoked this was putting <; in the
4701 middle of a list instead of at the start.) If this happened during a DATA
4702 ACL check, a -D file could be left lying around. This kind of configuration
4703 error no longer causes Exim to die; instead it causes a defer errror. The
4704 incident is still logged to the main and panic logs.
4706 74. Buglet left over from Exim 3 conversion. The message "too many messages
4707 in one connection" was written to the rejectlog but not the mainlog, except
4708 when address rewriting (yes!) was being logged.
4710 75. Added write_rejectlog option.
4712 76. When a system filter was run not as root (that is, when system_filter_user
4713 was set), the values of the $n variables were not being returned to the
4714 main process; thus, they were not subsequently available in the $sn
4717 77. Added +return_path_on_delivery log selector.
4719 78. A connection timeout was being treated differently from recipients deferred
4720 when testing hosts_max_try with a message that was older than the host's
4721 retry timeout. (The host should not be counted, thus allowing all hosts to
4722 be tried at least once before bouncing.) This may have been the cause of an
4723 occasionally reported bug whereby a message would remain on the queue
4724 longer than the retry timeout, but would be bounced if a delivery was
4725 forced. I say "may" because I never totally pinned down the problem;
4726 setting up timeout/retry tests is difficult. See also the next item.
4728 79. The ultimate address timeout was not being applied to errors that involved
4729 a combination of host plus message (for example, a timeout on a MAIL
4730 command). When an address resolved to a number of possible hosts, and they
4731 were not all tried for each delivery (e.g. because of hosts_max_try), a
4732 message could remain on the queue longer than the retry timeout.
4734 80. Sieve bug: "stop" inside "elsif" was broken. Applied a patch from Michael
4737 81. Fixed an obscure SMTP outgoing bug which required at least the following
4738 conditions: (a) there was another message waiting for the same server;
4739 (b) the server returned 5xx to all RCPT commands in the first message so
4740 that the message was not completed; (c) the server dropped the connection
4741 or gave a negative response to the RSET that Exim sends to abort the
4742 transaction. The observed case was a dropped connection after DATA that had
4743 been sent in pipelining mode. That is, the server had advertised PIPELINING
4744 but was not implementing it correctly. The effect of the bug was incorrect
4745 behaviour, such as trying another host, and this could lead to a crash.
4751 1. The 3rd arguments to getsockname(), getpeername(), and accept() in exim.c
4752 and daemon.c were passed as pointers to ints; they should have been
4753 pointers to socklen_t variables (which are typically unsigned ints).
4755 2. Some signed/unsigned type warnings in the os.c file for Linux have been
4758 3. Fixed a really odd bug that affected only the testing scheme; patching a
4759 certain fixed string in the binary changed the value of another string that
4760 happened to be identical to the end of the original first string.
4762 4. When gethostbyname() (or equivalent) is passed an IP address as a "host
4763 name", it returns that address as the IP address. On some operating
4764 systems (e.g. Solaris), it also passes back the IP address string as the
4765 "host name". However, on others (e.g. Linux), it passes back an empty
4766 string. Exim wasn't checking for this, and was changing the host name to an
4767 empty string, assuming it had been canonicized.
4769 5. Although rare, it is permitted to have more than one PTR record for a given
4770 IP address. I thought that gethostbyaddr() or getipnodebyaddr() always gave
4771 all the names associated with an address, because they do in Solaris.
4772 However, it seems that they do not in Linux for data that comes from the
4773 DNS. If an address in /etc/hosts has multiple names, they _are_ all given.
4774 I found this out when I moved to a new Linux workstation and tried to run
4775 the Exim test suite.
4777 To get round this problem I have changed the code so that it now does its
4778 own call to the DNS to look up PTR records when searching for a host name.
4779 If nothing can be found in the DNS, it tries gethostbyaddr(), so that
4780 addresses that are only in /etc/hosts are still found.
4782 This behaviour is, however, controlled by an option called host_lookup_
4783 order, which defaults to "bydns:byaddr". If people want to use the other
4784 order, or indeed, just use one or the other means of lookup, they can
4785 specify it in this variable.
4787 6. If a PTR record yields an empty name, Exim treats it as non-existent. In
4788 some operating systems, this comes back from gethostbyaddr() as an empty
4789 string, and this is what Exim used to test for. However, it seems that in
4790 other systems, "." is yielded. Exim now tests for this case too.
4792 7. The values of check_spool_space and check_log_space are now held internally
4793 as a number of kilobytes instead of an absolute number of bytes. If a
4794 numbers is specified without 'K' or 'M', it is rounded up to the nearest
4795 kilobyte. This means that much larger values can be stored.
4797 8. Exim monitor: an attempt to get the action menu when not actually pointing
4798 at a message produces an empty menu entitled "No message selected". This
4799 works on Solaris (OpenWindows). However, XFree86 does not like a menu with
4800 no entries in it ("Shell widget menu has zero width and/or height"). So I
4801 have added a single, blank menu entry in this case.
4803 9. Added ${quote_local_part.
4805 10. MIME decoding is now applied to the contents of Subject: header lines when
4808 11. Now that a reference to $sender_host_address automatically causes a reverse
4809 lookup to occur if necessary (4.13/18), there is no need to arrange for a
4810 host lookup before query-style lookups in lists that might use this
4811 variable. This has therefore been abolished, and the "net-" prefix is no
4812 longer necessary for query-style lookups.
4814 12. The Makefile for SCO_SV contained a setting of LDFLAGS. This appears to
4815 have been a typo for LFLAGS, so it has been changed.
4817 13. The install script calls Exim with "-C /dev/null" in order to find the
4818 version number. If ALT_CONFIG_PREFIX was set, this caused an error message
4819 to be output. Howeve, since Exim outputs its version number before the
4820 error, it didn't break the script. It just looked ugly. I fixed this by
4821 always allowing "-C /dev/null" if the caller is root.
4823 14. Ignore overlarge ACL variable number when reading spool file - insurance
4824 against a later release with more variables having written the file.
4826 15. The standard form for an IPv6 address literal was being rejected by EHLO.
4827 Example: [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
4828 this, as well as the form without the "IPv6" on the front.
4830 16. Added CHOWN_COMMAND=/usr/sbin/chown and LIBS=-lresolv to the
4831 OS/Makefile-Darwin file.
4833 17. Fixed typo in lookups/ldap.c: D_LOOKUP should be D_lookup. This applied
4834 only to LDAP libraries that do not have LDAP_OPT_DEREF.
4836 18. After change 4.21/52, "%ld" was used to format the contents of the $inode
4837 variable. However, some OS use ints for inodes. I've added cast to long int
4838 to get rid of the compiler warning.
4840 19. I had forgotten to lock out "/../" in configuration file names when
4841 ALT_CONFIG_PREFIX was set.
4843 20. Routers used for verification do not need to specify transports. However,
4844 if such a router generated a host list, and callout was configured, Exim
4845 crashed, because it could not find a port number from the (non-existent)
4846 transport. It now assumes port 25 in this circumstance.
4848 21. Added the -t option to exigrep.
4850 22. If LOOKUP_LSEARCH is defined, all three linear search methods (lsearch,
4851 wildlsearch, nwildlsearch) are compiled. LOOKUP_WILDLSEARCH and LOOKUP_
4852 NWILDLSEARCH are now obsolete, but retained for compatibility. If either of
4853 them is set, LOOKUP_LSEARCH is forced.
4855 23. "exim -bV" now outputs a list of lookups that are included in the binary.
4857 24. Added sender and host information to the "rejected by local_scan()" log
4858 line; previously there was no indication of these.
4860 25. Added .include_if_exists.
4862 26. Change 3.952/11 added an explicit directory sync on top of a file sync for
4863 Linux. It turns out that not all file systems support this. Apparently some
4864 versions of NFS do not. (It's rare to put Exim's spool on NFS, but people
4865 do it.) To cope with this, the error EINVAL, which means that sync-ing is
4866 not supported on the file descriptor, is now ignored when Exim is trying to
4867 sync a directory. This applies only to Linux.
4869 27. Added -DBIND_8_COMPAT to the CLFAGS setting for Darwin.
4871 28. In Darwin (MacOS X), the PAM headers are in /usr/include/pam and not in
4872 /usr/include/security. There's now a flag in OS/os.h-Darwin to cope with
4875 29. Added support for maildirsize files from supplied patch (modified a bit).
4877 30. The use of :fail: followed by an empty string could lead Exim to respond to
4878 sender verification failures with (e.g.):
4880 550 Verification failed for <xxx>
4881 550 Sender verify failed
4883 where the first response line was missing the '-' that indicates it is not
4884 the final line of the response.
4886 31. The loop for finding the name of the user that called Exim had a hardwired
4887 limit of 10; it now uses the value of finduser_retries, which is used for
4888 all other user lookups.
4890 32. Added $received_count variable, available in data and not_smtp ACLs, and at
4893 33. Exim was neglecting to zero errno before one call of strtol() when
4894 expanding a string and expecting an integer value. On some systems this
4895 resulted in spurious "integer overflow" errors. Also, it was casting the
4896 result into an int without checking.
4898 34. Testing for a connection timeout using "timeout_connect" in the retry rules
4899 did not work. The code looks as if it has *never* worked, though it appears
4900 to have been documented since at least releast 1.62. I have made it work.
4902 35. The "timeout_DNS" error in retry rules, also documented since at least
4903 1.62, also never worked. As it isn't clear exactly what this means, and
4904 clearly it isn't a major issue, I have abolished the feature by treating it
4905 as "timeout", and writing a warning to the main and panic logs.
4907 36. The display of retry rules for -brt wasn't always showing the error code
4910 37. Added new error conditions to retry rules: timeout_A, timeout_MX,
4911 timeout_connect_A, timeout_connect_MX.
4913 38. Rewriting the envelope sender at SMTP time did not allow it to be rewritten
4914 to the empty sender.
4916 39. The daemon was not analysing the content of -oX till after it had closed
4917 stderr and disconnected from the controlling terminal. This meant that any
4918 syntax errors were only noted on the panic log, and the return code from
4919 the command was 0. By re-arranging the code a little, I've made the
4920 decoding happen first, so such errors now appear on stderr, and the return
4921 code is 1. However, the actual setting up of the sockets still happens in
4922 the disconnected process, so errors there are still only recorded on the
4925 40. A daemon listener on a wildcard IPv6 socket that also accepts IPv4
4926 connections (as happens on some IP stacks) was logged at start up time as
4927 just listening for IPv6. It now logs "IPv6 with IPv4". This differentiates
4928 it from "IPv6 and IPv4", which means that two separate sockets are being
4931 41. The debug output for gethostbyname2() or getipnodebyname() failures now
4932 says whether AF_INET or AF_INET6 was passed as an argument.
4934 42. Exiwhat output was messed up when time zones were included in log
4937 43. Exiwhat now gives more information about the daemon's listening ports,
4938 and whether -tls-on-connect was used.
4940 44. The "port" option of the smtp transport is now expanded.
4942 45. A "message" modifier in a "warn" statement in a non-message ACL was being
4943 silently ignored. Now an error message is written to the main and panic
4946 46. There's a new ACL modifier called "logwrite" which writes to a log file
4947 as soon as it is encountered.
4949 47. Added $local_user_uid and $local_user_gid at routing time.
4951 48. Exim crashed when trying to verify a sender address that was being
4954 49. Exim was recognizing only a space character after ".include". It now also
4955 recognizes a tab character.
4957 50. Fixed several bugs in the Perl script that creates the exim.8 man page by
4958 extracting the relevant information from the specification. The man page no
4959 longer contains scrambled data for the -d option, and I've added a section
4960 at the front about calling Exim under different names.
4962 51. Added "extra_headers" argument to the "mail" command in filter files.
4964 52. Redirecting mail to an unqualified address in a Sieve filter caused Exim to
4967 53. Installed eximstats 1.29.
4969 54. Added transport_filter_timeout as a generic transport option.
4971 55. Exim no longer adds an empty Bcc: header to messages that have no To: or
4972 Cc: header lines. This was required by RFC 822, but it not required by RFC
4975 56. Exim used to add From:, Date:, and Message-Id: header lines to any
4976 incoming messages that did not have them. Now it does so only if the
4977 message originates locally, that is, if there is no associated remote host
4978 address. When Resent- header lines are present, this applies to the Resent-
4979 lines rather than the non-Resent- lines.
4981 57. Drop incoming SMTP connection after too many syntax or protocol errors. The
4982 limit is controlled by smtp_max_synprot_errors, defaulting to 3.
4984 58. Messages for configuration errors now include the name of the main
4985 configuration file - useful now that there may be more than one file in a
4986 list (.included file names were always shown).
4988 59. Change 4.21/82 (run initgroups() when starting the daemon) causes problems
4989 for those rare installations that do not start the daemon as root or run it
4990 setuid root. I've cut out the call to initgroups() if the daemon is not
4993 60. The Exim user and group can now be bound into the binary as text strings
4994 that are looked up at the start of Exim's processing.
4996 61. Applied a small patch for the Interbase code, supplied by Ard Biesheuvel.
4998 62. Added $mailstore_basename variable.
5000 63. Installed patch to sieve.c from Michael Haardt.
5002 64. When Exim failed to open the panic log after failing to open the main log,
5003 the original message it was trying to log was written to stderr and debug
5004 output, but if they were not available (the usual case in production), it
5005 was lost. Now it is written to syslog before the two lines that record the
5006 failures to open the logs.
5008 65. Users' Exim filters run in subprocesses under the user's uid. It is
5009 possible for a "deliver" command or an alias in a "personal" command to
5010 provoke an address rewrite. If logging of address rewriting is configured,
5011 this fails because the process is not running as root or exim. There may be
5012 a better way of dealing with this, but for the moment (because 4.30 needs
5013 to be released), I have disabled address rewrite logging when running a
5014 filter in a non-root, non-exim process.
5020 1. The buildconfig auxiliary program wasn't quoting the value set for
5021 HEADERS_CHARSET. This caused a compilation error complaining that 'ISO' was
5022 not defined. This bug was masked in 4.22 by the effect that was fixed in
5025 2. Some messages that were rejected after a message id was allocated were
5026 shown as "incomplete" by exigrep. It no longer does this for messages that
5027 are rejected by local_scan() or the DATA or non-SMTP ACLs.
5029 3. If a Message-ID: header used a domain literal in the ID, and Exim did not
5030 have allow_domain_literals set, the ID did not get logged in the <= line.
5031 Domain literals are now always recognized in Message-ID: header lines.
5033 4. The first argument for a ${extract expansion item is the key name or field
5034 number. Leading and trailing spaces in this item were not being ignored,
5035 causing some misleading effects.
5037 5. When deliver_drop_privilege was set, single queue runner processes started
5038 manually (i.e. by the command "exim -q") or by the daemon (which uses the
5039 same command in the process it spins off) were not dropping privilege.
5041 6. When the daemon running as "exim" started a queue runner, it always
5042 re-executed Exim in the spun-off process. This is a waste of effort when
5043 deliver_drop_privilege is set. The new process now just calls the
5044 queue-runner function directly.
5050 1. Typo in the src/EDITME file: it referred to HEADERS_DECODE_TO instead of
5053 2. Change 4.21/73 introduced a bug. The pid file path set by -oP was being
5054 ignored. Though the use of -oP was forcing the writing of a pid file, it
5055 was always written to the default place.
5057 3. If the message "no IP address found for host xxxx" is generated during
5058 incoming verification, it is now followed by identification of the incoming
5059 connection (so you can more easily find what provoked it).
5061 4. Bug fix for Sieve filters: "stop" inside a block was not working properly.
5063 5. Added some features to "harden" Exim a bit more against certain attacks:
5065 (a) There is now a build-time option called FIXED_NEVER_USERS that can
5066 be put in Local/Makefile. This is like the never_users runtime option,
5067 but it cannot be overridden. The default setting is "root".
5069 (b) If ALT_CONFIG_PREFIX is defined in Local/Makefile, it specifies a
5070 prefix string with which any file named in a -C command line option
5073 (c) If ALT_CONFIG_ROOT_ONLY is defined in Local/Makefile, root privilege
5074 is retained for -C and -D only if the caller of Exim is root. Without
5075 it, the exim user may also use -C and -D and retain privilege.
5077 (d) If DISABLE_D_OPTION is defined in Local/Makefile, the use of the -D
5078 command line option is disabled.
5080 6. Macro names set by the -D option must start with an upper case letter, just
5081 like macro names defined in the configuration file.
5083 7. Added "dereference=" facility to LDAP.
5085 8. Two instances of the typo "uknown" in the source files are fixed.
5087 9. If a PERL_COMMAND setting in Local/Makefile was not at the start of a line,
5088 the Configure-Makefile script screwed up while processing it.
5090 10. Incorporated PCRE 4.4.
5092 11. The SMTP synchronization check was not operating right at the start of an
5093 SMTP session. For example, it could not catch a HELO sent before the client
5094 waited for the greeting. There is now a check for outstanding input at the
5095 point when the greeting is written. Because of the duplex, asynchronous
5096 nature of TCP/IP, it cannot be perfect - the incorrect input may be on its
5097 way, but not yet received, when the check is performed.
5099 12. Added tcp_nodelay to make it possible to turn of the setting of TCP_NODELAY
5100 on TCP/IP sockets, because this apparently causes some broken clients to
5103 13. Installed revised OS/Makefile-CYGWIN and OS/os.c-cygwin (the .h file was
5104 unchanged) from the Cygwin maintainer.
5106 14. The code for -bV that shows what is in the binary showed "mbx" when maildir
5107 was supported instead of testing for mbx. Effectively a typo.
5109 15. The spa authenticator server code was not checking that the input it
5110 received was valid base64.
5112 16. The debug output line for the "set" modifier in ACLs was not showing the
5113 name of the variable that was being set.
5115 17. Code tidy: the variable type "vtype_string" was never used. Removed it.
5117 18. Previously, a reference to $sender_host_name did not cause a DNS reverse
5118 lookup on its own. Something else was needed to trigger the lookup. For
5119 example, a match in host_lookup or the need for a host name in a host list.
5120 Now, if $sender_host_name is referenced and the host name has not yet been
5121 looked up, a lookup is performed. If the lookup fails, the variable remains
5122 empty, and $host_lookup_failed is set to "1".
5124 19. Added "eqi" as a case-independent comparison operator.
5126 20. The saslauthd authentication condition could segfault if neither service
5127 nor realm was specified.
5129 21. If an overflowing value such as "2048M" was set for message_size_limit, the
5130 error message that was logged was misleading, and incoming SMTP
5131 connections were dropped. The message is now more accurate, and temporary
5132 errors are given to SMTP connections.
5134 22. In some error situations (such as 21 above) Exim rejects all SMTP commands
5135 (except RSET) with a 421 error, until QUIT is received. However, it was
5136 failing to send a response to QUIT.
5138 23. The HELO ACL was being run before the code for helo_try_verify_hosts,
5139 which made it impossible to use "verify = helo" in the HELO ACL. The HELO
5140 ACL is now run after the helo_try_verify_hosts code.
5142 24. "{MD5}" and "{SHA1}" are now recognized as equivalent to "{md5"} and
5143 "{sha1}" in the "crypteq" expansion condition (in fact the comparison is
5144 case-independent, so other case variants are also recognized). Apparently
5145 some systems use these upper case variants.
5147 25. If more than two messages were waiting for the same host, and a transport
5148 filter was specified for the transport, Exim sent two messages over the
5149 same TCP/IP connection, and then failed with "socket operation on non-
5150 socket" when it tried to send the third.
5152 26. Added Exim::debug_write and Exim::log_write for embedded Perl use.
5154 27. The extern definition of crypt16() in expand.c was not being excluded when
5155 the OS had its own crypt16() function.
5157 28. Added bounce_return_body as a new option, and bounce_return_size_limit
5158 as a preferred synonym for return_size_limit, both as an option and as an
5161 29. Added LIBS=-liconv to OS/Makefile-OSF1.
5163 30. Changed the default configuration ACL to relax the local part checking rule
5164 for addresses that are not in any local domains. For these addresses,
5165 slashes and pipe symbols are allowed within local parts, but the sequence
5166 /../ is explicitly forbidden.
5168 31. SPA server authentication was not clearing the challenge buffer before
5171 32. log_message in a "warn" ACL statement was writing to the reject log as
5172 well as to the main log, which contradicts the documentation and doesn't
5173 seem right (because no rejection is happening). So I have stopped it.
5175 33. Added Ard Biesheuvel's lookup code for accessing an Interbase database.
5176 However, I am unable to do any testing of this.
5178 34. Fixed an infelicity in the appendfile transport. When checking directories
5179 for a mailbox, to see if any needed to be created, it was accidentally
5180 using path names with one or more superfluous leading slashes; tracing
5181 would show up entries such as stat("///home/ph10", 0xFFBEEA48).
5183 35. If log_message is set on a "discard" verb in a MAIL or RCPT ACL, its
5184 contents are added to the log line that is written for every discarded
5185 recipient. (Previously a log_message setting was ignored.)
5187 36. The ${quote: operator now quotes the string if it is empty.
5189 37. The install script runs exim in order to find its version number. If for
5190 some reason other than non-existence or emptiness, which it checks, it
5191 could not run './exim', it was installing it with an empty version number,
5192 i.e. as "exim-". This error state is now caught, and the installation is
5195 38. An argument was missing from the function that creates an error message
5196 when Exim fails to connect to the socket for saslauthd authentication.
5197 This could cause Exim to crash, or give a corrupted message.
5199 39. Added isip, isip4, and isip6 to ${if conditions.
5201 40. The ACL variables $acl_xx are now saved with the message, and can be
5202 accessed later in routers, transports, and filters.
5204 41. The new lookup type nwildlsearch is like wildlsearch, except that the key
5205 strings in the file are not string-expanded.
5207 42. If a MAIL command specified a SIZE value that was too large to fit into an
5208 int variable, the check against message_size_limit failed. Such values are
5209 now forced to INT_MAX, which is around 2Gb for a 32-bit variable. Maybe one
5210 day this will have to be increased, but I don't think I want to be around
5211 when emails are that large.
5218 1. Removed HAVE_ICONV=yes from OS/Makefile-FreeBSD, since it seems that
5219 iconv() is not standard in FreeBSD.
5221 2. Change 4.21/17 was buggy and could cause stack overwriting on a system with
5222 IPv6 enabled. The observed symptom was a segmentation fault on return from
5223 the function os_common_find_running_interfaces() in src/os.c.
5225 3. In the check_special_case() function in daemon.c I had used "errno" as an
5226 argument name, which causes warnings on some systems. This was basically a
5227 typo, since it was named "eno" in the comments!
5229 4. The code that waits for the clock to tick (at a resolution of some fraction
5230 of a second) so as to ensure message-id uniqueness was always waiting for
5231 at least one whole tick, when it could have waited for less. [This is
5232 almost certainly not relevant at current processor speeds, where it is
5233 unlikely to ever wait at all. But we try to future-proof.]
5235 5. The function that sleeps for a time interval that includes fractions of a
5236 second contained a race. It did not block SIGALRM between setting the
5237 timer, and suspending (a couple of lines later). If the interval was short
5238 and the sigsuspend() was delayed until after it had expired, the suspension
5239 never ended. On busy systems this could lead to processes getting stuck for
5242 6. Some uncommon configurations may cause a lookup to happen in a queue runner
5243 process, before it forks any delivery processes. The open lookup caching
5244 mechanism meant that the open file or database connection was passed into
5245 the delivery process. The problem was that delivery processes always tidy
5246 up cached lookup data. This could cause a problem for the next delivery
5247 process started by the queue runner, because the external queue runner
5248 process does not know about the closure. So the next delivery process
5249 still has data in the lookup cache. In the case of a file lookup, there was
5250 no problem because closing a file descriptor in a subprocess doesn't affect
5251 the parent. However, if the lookup was caching a connection to a database,
5252 the connection was closed, and the second delivery process was likely to
5253 see errors such as "PGSQL: query failed: server closed the connection
5254 unexpectedly". The problem has been fixed by closing all cached lookups
5255 in a queue runner before running a delivery process.
5257 7. Compiler warning on Linux for the second argument of iconv(), which doesn't
5258 seem to have the "const" qualifier which it has on other OS. I've
5261 8. Change 4.21/2 was too strict. It is only if there are two authenticators
5262 *of the same type* (client or server) with the same public name that an
5263 error should be diagnosed.
5265 9. When Exim looked up a host name for an IP address, but failed to find the
5266 original IP address when looking up the host name (a safety check), it
5267 output the message "<ip address> does not match any IP for NULL", which was
5268 confusing, to say the least. The bug was that the host name should have
5269 appeared instead of "NULL".
5271 10. Since release 3.03, if Exim is called by a uid other than root or the Exim
5272 user that is built into the binary, and the -C or -D options is used, root
5273 privilege is dropped before the configuration file is read. In addition,
5274 logging is switched to stderr instead of the normal log files. If the
5275 configuration then re-defines the Exim user, the unprivileged environment
5276 is probably not what is expected, so Exim logs a panic warning message (but
5279 However, if deliver_drop_privilege is set, the unprivileged state may well
5280 be exactly what is intended, so the warning has been cut out in that case,
5281 and Exim is allowed to try to write to its normal log files.
5287 1. smtp_return_error_details was not giving details for temporary sender
5288 or receiver verification errors.
5290 2. Diagnose a configuration error if two authenticators have the same public
5293 3. Exim used not to create the message log file for a message until the first
5294 delivery attempt. This could be confusing when incoming messages were held
5295 for policy or load reasons. The message log file is now created at the time
5296 the message is received, and an initial "Received" line is written to it.
5298 4. The automatically generated man page for command line options had a minor
5299 bug that caused no ill effects; however, a more serious problem was that
5300 the procedure for building the man page automatically didn't always
5301 operate. Consequently, release 4.20 contains an out-of-date version. This
5302 shouldn't happen again.
5304 5. When building Exim with embedded Perl support, the script that builds the
5305 Makefile was calling 'perl' to find its compile-time parameters, ignoring
5306 any setting of PERL_COMMAND in Local/Makefile. This is now fixed.
5308 6. The freeze_tell option was not being used for messages that were frozen on
5309 arrival, either by an ACL or by local_scan().
5311 7. Added the smtp_incomplete_transaction log selector.
5313 8. After STARTTLS, Exim was not forgetting that it had advertised AUTH, so it
5314 was accepting AUTH without a new EHLO.
5316 9. Added tls_remember_esmtp to cope with YAEB. This allows AUTH and other
5317 ESMTP extensions after STARTTLS without a new EHLO, in contravention of the
5320 10. Logging of TCP/IP connections (when configured) now happens in the main
5321 daemon process instead of the child process, so that the TCP/IP connection
5322 count is more accurate (but it can never be perfect).
5324 11. The use of "drop" in a nested ACL was not being handled correctly in the
5325 outer ACL. Now, if condition failure induced by the nested "drop" causes
5326 the outer ACL verb to deny access ("accept" or "discard" after "endpass",
5327 or "require"), the connection is dropped.
5329 12. Similarly, "discard" in a nested ACL wasn't being handled. A nested ACL
5330 that yield "discard" can now be used with an "accept" or a "discard" verb,
5331 but an error is generated for any others (because I can't see a useful way
5332 to define what should happen).
5334 13. When an ACL is read dynamically from a file (or anywhere else), the lines
5335 are now processed in the same way as lines in the Exim configuration file.
5336 In particular, continuation lines are supported.
5338 14. Added the "dnslists = a.b.c!=n.n.n.n" feature.
5340 15. Added -ti meaning -t -i.
5342 16. Check for letters, digits, hyphens, and dots in the names of dnslist
5343 domains, and warn by logging if others are found.
5345 17. At least on BSD, alignment is not guarenteed for the array of ifreq's
5346 returned from GIFCONF when Exim is trying to find the list of interfaces on
5347 a host. The code in os.c has been modified to copy each ifreq to an aligned
5348 structure in all cases.
5350 Also, in some cases, the returned ifreq's were being copied to a 'struct
5351 ifreq' on the stack, which was subsequently passed to host_ntoa(). That
5352 means the last couple of bytes of an IPv6 address could be chopped if the
5353 ifreq contained only a normal sockaddr (14 bytes storage).
5355 18. Named domain lists were not supported in the hosts_treat_as_local option.
5356 An entry such as +xxxx was not recognized, and was treated as a literal
5359 19. Ensure that header lines added by a DATA ACL are included in the reject log
5360 if the ACL subsequently rejects the message.
5362 20. Upgrade the cramtest.pl utility script to use Digest::MD5 instead of just
5363 MD5 (which is deprecated).
5365 21. When testing a filter file using -bf, Exim was writing a message when it
5366 took the sender from a "From " line in the message, but it was not doing so
5367 when it took $return_path from a Return-Path: header line. It now does.
5369 22. If the contents of a "message" modifier for a "warn" ACL verb do not begin
5370 with a valid header line field name (a series of printing characters
5371 terminated by a colon, Exim now inserts X-ACL-Warn: at the beginning.
5373 23. Changed "disc" in the source to "disk" to conform to the documentation and
5374 the book and for uniformity.
5376 24. Ignore Sendmail's -Ooption=value command line item.
5378 25. When execve() failed while trying to run a command in a pipe transport,
5379 Exim was returning EX_UNAVAILBLE (69) from the subprocess. However, this
5380 could be confused with a return value of 69 from the command itself. This
5381 has been changed to 127, the value the shell returns if it is asked to run
5382 a non-existent command. The wording for the related log line suggests a
5383 non-existent command as the problem.
5385 26. If received_header_text expands to an empty string, do not add a Received:
5386 header line to the message. (Well, it adds a token one on the spool, but
5387 marks it "old" so that it doesn't get used or transmitted.)
5389 27. Installed eximstats 1.28 (addition of -nt option).
5391 28. There was no check for failure on the call to getsockname() in the daemon
5392 code. This can fail if there is a shortage of resources on the system, with
5393 ENOMEM, for example. A temporary error is now given on failure.
5395 29. Contrary to the C standard, it seems that in some environments, the
5396 equivalent of setlocale(LC_ALL, "C") is not obeyed at the start of a C
5397 program. Exim now does this explicitly; it affects the formatting of
5398 timestamps using strftime().
5400 30. If exiqsumm was given junk data, it threw up some uninitialized variable
5401 complaints. I've now initialized all the variables, to avoid this.
5403 32. Header lines added by a system filter were not being "seen" during
5404 transport-time rewrites.
5406 33. The info_callback() function passed to OpenSSL is set up with type void
5407 (*)(SSL *, int, int), as described somewhere. However, when calling the
5408 function (actually a macro) that sets it up, the type void(*)() is
5409 expected. I've put in a cast to prevent warnings from picky compilers.
5411 34. If a DNS black list lookup found a CNAME record, but there were no A
5412 records associated with the domain it pointed at, Exim crashed.
5414 35. If a DNS black list lookup returned more than one A record, Exim ignored
5415 all but the first. It now scans all returned addresses if a particular IP
5416 value is being sought. In this situation, the contents of the
5417 $dnslist_value variable are a list of all the addresses, separated by a
5420 36. Tightened up the rules for host name lookups using reverse DNS. Exim used
5421 to accept a host name and all its aliases if the forward lookup for any of
5422 them yielded the IP address of the incoming connection. Now it accepts only
5423 those names whose forward lookup yields the correct IP address. Any other
5424 names are discarded. This closes a loophole whereby a rogue DNS
5425 administrator could create reverse DNS records to break through a
5426 wildcarded host restriction in an ACL.
5428 37. If a user filter or a system filter that ran in a subprocess used any of
5429 the numerical variables ($1, $2 etc), or $thisaddress, in a pipe command,
5430 the wrong values were passed to the pipe command ($thisaddress had the
5431 value of $0, $0 had the value of $1, etc). This bug was introduced by
5432 change 4.11/101, and not discovered because I wrote an inadequate test. :-(
5434 38. Improved the line breaking for long SMTP error messages from ACLs.
5435 Previously, if there was no break point between 40 and 75 characters, Exim
5436 left the rest of the message alone. Two changes have been made: (a) I've
5437 reduced the minimum length to 35 characters; (b) if it can't find a break
5438 point between 35 and 75 characters, it looks ahead and uses the first one
5439 that it finds. This may give the occasional overlong line, but at least the
5440 remaining text gets split now.
5442 39. Change 82 of 4.11 was unimaginative. It assumed the limit on the number of
5443 file descriptors might be low, and that setting 1000 would always raise it.
5444 It turns out that in some environments, the limit is already over 1000 and
5445 that lowering it causes trouble. So now Exim takes care not to decrease it.
5447 40. When delivering a message, the value of $return_path is set to $sender_
5448 address at the start of routing (routers may change the value). By an
5449 oversight, this default was not being set up when an address was tested by
5450 -bt or -bv, which affected the outcome if any router or filter referred to
5453 41. The idea of the "warn" ACL verb is that it adds a header or writes to the
5454 log only when "message" or "log_message" are set. However, if one of the
5455 conditions was an address verification, or a call to a nested ACL, the
5456 messages generated by the underlying test were being passed through. This
5457 no longer happens. The underlying message is available in $acl_verify_
5458 message for both "message" and "log_message" expansions, so it can be
5459 passed through if needed.
5461 42. Added RFC 2047 interpretation of header lines for $h_ expansions, with a
5462 new expansion $bh_ to give the encoded byte string without charset
5463 translation. Translation happens only if iconv() is available; HAVE_ICONV
5464 indicates this at build time. HEADERS_CHARSET gives the charset to
5465 translate to; headers_charset can change it in the configuration, and
5466 "headers charset" can change it in an individual filter file.
5468 43. Now that we have a default RFC 2047 charset (see above), the code in Exim
5469 that creates RFC 2047 encoded "words" labels them as that charset instead
5470 of always using iso-8859-1. The cases are (i) the explicit ${rfc2047:
5471 expansion operator; (ii) when Exim creates a From: line for a local
5472 message; (iii) when a header line is rewritten to include a "phrase" part.
5474 44. Nasty bug in exiqsumm: the regex to skip already-delivered addresses was
5475 buggy, causing it to skip the first lines of messages whose message ID
5476 ended in 'D'. This would not have bitten before Exim release 4.14, because
5477 message IDs were unlikely to end in 'D' before then. The effect was to have
5478 incorrect size information for certain domains.
5480 45. #include "config.h" was missing at the start of the crypt16.c module. This
5481 caused trouble on Tru64 (aka OSF1) systems, because HAVE_CRYPT16 was not
5484 46. If there was a timeout during a "random" callout check, Exim treated it as
5485 a failure of the random address, and carried on sending RSET and the real
5486 address. If the delay was just some slowness somewhere, the response to the
5487 original RCPT would be taken as a response to RSET and so on, causing
5488 mayhem of various kinds.
5490 47. Change 50 for 4.20 was a heap of junk. I don't know what I was thinking
5491 when I implemented it. It didn't allow for the fact that some option values
5492 may legitimatetly be negative (e.g. size_addition), and it didn't even do
5493 the right test for positive values.
5495 48. Domain names in DNS records are case-independent. Exim always looks them up
5496 in lower case. Some resolvers return domain names in exactly the case they
5497 appear in the zone file, that is, they may contain uppercase letters. Not
5498 all resolvers do this - some return always lower case. Exim was treating a
5499 change of case by a resolver as a change of domain, similar to a widening
5500 of a domain abbreviation. This triggered its re-routing code and so it was
5501 trying to route what was effectively the same domain again. This normally
5502 caused routing to fail (because the router wouldn't handle the domain
5503 twice). Now Exim checks for this case specially, and just changes the
5504 casing of the domain that it ultimately uses when it transmits the message
5507 49. Added Sieve (RFC 3028) support, courtesy of Michael Haardt's contributed
5510 50. If a filter generated a file delivery with a non-absolute name (possible if
5511 no home directory exists for the router), the forbid_file option was not
5514 51. Added '&' feature to dnslists, to provide bit mask matching in addition to
5515 the existing equality matching.
5517 52. Exim was using ints instead of ino_t variables in some places where it was
5518 dealing with inode numbers.
5520 53. If TMPDIR is defined in Local/Makefile (default in src/EDITME is
5521 TMPDIR="/tmp"), Exim checks for the presence of an environment variable
5522 called TMPDIR, and if it finds it is different, it changes its value.
5524 54. The smtp_printf() function is now made available to local_scan() so
5525 additional output lines can be written before returning. There is also an
5526 smtp_fflush() function to enable the detection of a dropped connection.
5527 The variables smtp_input and smtp_batched_input are exported to
5530 55. Changed the default runtime configuration: the message "Unknown user"
5531 has been removed from the ACL, and instead placed on the localuser router,
5532 using the cannot_route_message feature. This means that any verification
5533 failures that generate their own messages won't get overridden. Similarly,
5534 the "Unrouteable address" message that was in the ACL for unverifiable
5535 relay addresses has also been removed.
5537 56. Added hosts_avoid_esmtp to the smtp transport.
5539 57. The exicyclog script was not checking for the esoteric option
5540 CONFIGURE_FILE_USE_EUID in the Local/Makefile. It now does this, but it
5541 will work only if exicyclog is run under the appropriate euid.
5543 58. Following a discussion on the list, the rules by which Exim recognises line
5544 endings on incoming messages have been changed. The -dropcr and drop_cr
5545 options are now no-ops, retained only for backwards compatibility. The
5546 following line terminators are recognized: LF CRLF CR. However, special
5547 processing applies to CR:
5549 (i) The sequence CR . CR does *not* terminate an incoming SMTP message,
5550 nor a local message in the state where . is a terminator.
5552 (ii) If a bare CR is encountered in a header line, an extra space is added
5553 after the line terminator so as not to end the header. The reasoning
5554 behind this is that bare CRs in header lines are most likely either
5555 to be mistakes, or people trying to play silly games.
5557 59. The size of a message, as listed by "-bp" or in the Exim monitor window,
5558 was being incorrectly given as 18 bytes larger than it should have been.
5559 This is a VOB (very old bug).
5561 60. This may never have affected anything current, but just in case it has:
5562 When the local host is found other than at the start of a list of hosts,
5563 the local host, those with the same MX, and any that follow, are discarded.
5564 When the list in question was part of a longer list of hosts, the following
5565 hosts (not currently being processed) were also being discarded. This no
5566 longer happens. I'm not sure if this situation could ever has previously
5569 61. Added the "/MX" feature to lists of hosts in the manualroute and query
5572 62. Whenever Exim generates a new message, it now adds an Auto-Submitted:
5573 header. This is something that is recommended in a new Internet Draft, and
5574 is something that is documented as being done by Sendmail. There are two
5575 possible values. For messages generated by the autoreply transport, Exim
5578 Auto-Submitted: auto-replied
5580 whereas for all other generated messages (e.g. bounces) it adds
5582 Auto-Submitted: auto-generated
5584 63. The "personal" condition in filters now includes a test for the
5585 Auto-Submitted: header. If it contains the string "auto-" the message it
5586 not considered personal.
5588 64. Added rcpt_include_affixes as a generic transport option.
5590 65. Added queue_only_override (default true).
5592 66. Added the syslog_duplication option.
5594 67. If what should have been the first header line of a message consisted of
5595 a space followed by a colon, Exim was mis-interpreting it as a header line.
5596 It isn't of course - it is syntactically invalid and should therefore be
5597 treated as the start of the message body. The misbehaviour could have
5598 caused a number of strange effects, including loss of data in subsequent
5599 header lines, and spool format errors.
5601 68. Formerly, the AUTH parameter on a MAIL command was trusted only if the
5602 client host had authenticated. This control can now be exercised by an ACL
5603 for more flexibility.
5605 69. By default, callouts do not happen when testing with -bh. There is now a
5606 variant, -bhc, which does actually run the callout code, including
5607 consulting and updating the callout cache.
5609 70. Added support for saslauthd authentication, courtesy of Alexander
5612 71. If statvfs() failed on the spool or log directories while checking their
5613 size for availability, Exim confusingly gave the error "space shortage".
5614 Furthermore, in debugging mode it crashed with a floating point exception.
5615 These checks are done if check_{spool,log}_{space,inodes} are set, and when
5616 an SMTP message arrives with SIZE= on the MAIL command. As this is a really
5617 serious problem, Exim now writes to the main and panic logs when this
5618 happens, with details of the failure. It then refuses to accept the
5619 incoming message, giving the message "spool directory problem" or "log
5620 directory problem" with a 421 code for SMTP messages.
5622 72. When Exim is about to re-exec itself, it ensures that the file descriptors
5623 0, 1, and 2 exist, because some OS complain for execs without them (see
5624 ChangeLog 4.05/30). If necessary, Exim opens /dev/null to use for these
5625 descriptors. However, the code omitted to check that the open succeeded,
5626 causing mysterious errors if for some reason the permissions on /dev/null
5627 got screwed. Now Exim writes a message to the main and panic logs, and
5628 bombs out if it can't open /dev/null.
5630 73. Re-vamped the way daemon_smtp_port, local_interfaces, and -oX work and
5631 interact so that it is all more flexible. It is supposed to remain
5632 backwards compatible. Also added extra_local_interfaces.
5634 74. Invalid data sent to a SPA (NTLM) server authenticator could cause the code
5635 to bomb out with an assertion failure - to the client this appears as a
5636 connection drop. This problem occurs in the part of the code that was taken
5637 from the Samba project. Fortunately, the assertion is in a very simple
5638 function, so I have fixed this by reproducing the function inline in the
5639 one place where it is called, and arranging for authentication to fail
5640 instead of killing the process with assert().
5642 75. The SPA client code was not working when the server requested OEM rather
5643 than Unicode encoding.
5645 76. Added code to make require_files with a specific uid setting more usable in
5646 the case where statting the file as root fails - usually a non-root-mounted
5647 NFS file system. When this happens and the failure is EACCES, Exim now
5648 forks a subprocess and does the per-uid checking as the relevant uid.
5650 77. Added process_log_path.
5652 78. If log_file_path was not explicitly set, a setting of check_log_space or
5653 check_log_inodes was ignored.
5655 79. If a space check for the spool or log partitions fails, the incident is now
5656 logged. Of course, in the latter case the data may get lost...
5658 80. Added the %p formatting code to string_format() so that it can be used to
5659 print addresses in debug_print(). Adjusted all the address printing in the
5660 debugging in store.c to use %p rather than %d.
5662 81. There was a concern that a line of code in smtp_in.c could overflow a
5663 buffer if a HELO/EHLO command was given followed by 500 or so spaces. As
5664 initially expressed, the concern was not well-founded, because trailing
5665 spaces are removed early. However, if the trailing spaces were followed by
5666 a NULL, they did not get removed, so the overflow was possible. Two fixes
5669 (a) I re-wrote the offending code in a cleaner fashion.
5670 (b) If an incoming SMTP command contains a NULL character, it is rejected
5673 82. When Exim changes uid/gid to the Exim user at daemon start time, it now
5674 runs initgroups(), so that if the Exim user is in any additional groups,
5675 they will be used during message reception.
5681 The change log for 4.20 and earlier releases has been archived.
git://git.exim.org / exim.git / blob