1 Change log file for Exim from version 4.21
2 ------------------------------------------
3 This document describes *changes* to previous versions, that might
4 affect Exim's operation, with an unchanged configuration file. For new
5 options, and new features, see the NewStuff file next to this ChangeLog.
11 JH/01 Remove code calling the customisable local_scan function, unless a new
12 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
14 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
15 non-signal-safe functions being used.
17 JH/03 Bug 2269: When presented with a received message having a stupidly large
18 number of DKIM-Signature headers, disable DKIM verification to avoid
19 a resource-consumption attack. The limit is set at twenty.
21 JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
22 report of oldest_pass in ${authres } in consequence, and separate out
23 some descriptions of reasons for verification fail.
25 JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
26 files in the spool were present and unlocked. A queue-runner could spot
27 them, resulting in a duplicate delivery. Fix that by doing the unlock
28 after the unlink. Investigation by Tim Stewart. Take the opportunity to
29 add more error-checking on spoolfile handling while that code is being
32 PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
33 No known attacks, no CVE, this is defensive hardening.
35 JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
36 a queue-runner could start a delivery while other operations were ongoing.
37 Cutthrough delivery was a common victim, resulting in duplicate delivery.
38 Found and investigated by Tim Stewart. Fix by using the open message data
39 file handle rather than opening another, and not locally closing it (which
40 releases a lock) for that case, while creating the temporary .eml format
41 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
43 JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
44 $sender_verify_failure/$recipient_verify_failure to "random".
46 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
49 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
50 Previously this would segfault.
52 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
55 JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
56 like zero, since the resolver should be doing this for us, But we need one
57 as a CNAME but no MX presence gets the CNAME returned; we need to check
58 that doesn't point to an MX to declare it "no MX returned" rather than
59 "error, loop". A new main option is added so the older capability of
60 following some limited number of chain links is maintained.
62 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
64 JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
65 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
66 now-deprecated earlier definitions used only specified the range up to TLS
67 1.2 (in the older-version library docs).
69 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
71 JH/15 Rework TLS client-side context management. Stop using a global, and
72 explicitly pass a context around. This enables future use of TLS for
73 connections to service-daemons (eg. malware scanning) while a client smtp
74 connection is using TLS; with cutthrough connections this is quite likely.
76 JH/16 Fix ARC verification to do AS checks in reverse order.
78 JH/17 Support a "tls" option on the ${readsocket } expansion item.
80 JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
81 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
82 Previously the "utf8" would be re-prepended for every additional message.
84 JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
85 Previously thery were accepted, resulting in issues when attempting to
86 forward messages to a non-supporting MTA.
88 PP/02 Let -n work with printing macros too, not just options.
90 JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
91 one parent address was copied, and bogus data was used at delivery-logging
92 time. Either a crash (after delivery) or bogus log data could result.
93 Discovery and analysis by Tim Stewart.
95 PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
96 Previously if the string ended mid-character, we did not insert the
97 promised '?' replacement.
99 PP/04 Documentation: current string operators work on bytes, not codepoints.
101 JH/21 Change as many as possible of the global flags into one-bit bitfields; these
102 should pack well giving a smaller memory footprint so better caching and
103 therefore performance. Group the declarations where this can't be done so
104 that the byte-sized flag variables are not interspersed among pointer
105 variables, giving a better chance of good packing by the compiler.
107 JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
108 non-null, to avoid issues with sites running BATV. Previously reports were
109 sent with an empty envelope sender so looked like bounces.
111 JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
112 The ignore_error flag wasn't being returned from the filter subprocess so
113 was not set for later routers. Investigation and fix by Matthias Kurz.
115 JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
116 and a msg:complete for the whole, when a message is manually removed using
117 -Mrm. Developement by Matthias Kurz, hacked on by JH.
119 JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
120 a "Gnu special" function, asprintf() in the DB utility binary builds; I
121 hope that is portable enough.
123 JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
124 requiring a known-CA anchor certificate; make it now rely entirely on the
125 TLSA as an anchor. Checking the name on the leaf cert against the name
126 on the A-record for the host is still done for TA (but not for EE mode).
128 JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
129 included in delivery lines for non-proxied connections, when compiled with
130 SUPPORT_SOCKS and running with proxy logging enabled.
132 JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
133 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
134 move the existing event to fire before the normal logging of message
135 failure so that custom logging is bracketed by normal logging.
137 JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
138 msg:fail:internal event. Developement by Matthias Kurz.
140 JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
141 far too small for todays use of crypto signatures stored there. Go all
142 the way to the max DNS message size of 64kB, even though this might be
143 overmuch for IOT constrained device use.
145 JH/31 Fix a bad use of a copy function, which could be used to pointlessly
146 copy a string over itself. The library routine is documented as not
147 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
153 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
154 When redis_servers is set to a list of > 1 element, and the Redis servers
155 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
156 case of MOVED into a DEFER case instead, thus moving the query onto the
157 next server in the list. For a cluster of N elements, all N servers must
158 be defined in redis_servers.
160 GF/02 Catch and remove uninitialized value warning in exiqsumm
161 Check for existence of @ARGV before looking at $ARGV[0]
163 JH/01 Replace the store_release() internal interface with store_newblock(),
164 which internalises the check required to safely use the old one, plus
165 the allocate and data copy operations duplicated in both (!) of the
166 extant use locations.
168 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
169 modifier. This matches the restriction on the commandline.
171 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
172 Previously only the last row was returned.
174 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
175 we assumed that tags in the header were well-formed, and parsed the
176 element content after inspecting only the first char of the tag.
177 Assumptions at that stage could crash the receive process on malformed
180 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
181 While running the DKIM ACL we operate on the Permanent memory pool so that
182 variables created with "set" persist to the DATA ACL. Also (at any time)
183 DNS lookups that fail create cache records using the Permanent pool. But
184 expansions release any allocations made on the current pool - so a dnsdb
185 lookup expansion done in the DKIM ACL releases the memory used for the
186 DNS negative-cache, and bad things result. Solution is to switch to the
187 Main pool for expansions.
188 While we're in that code, add checks on the DNS cache during store_reset,
189 active in the testsuite.
190 Problem spotted, and debugging aided, by Wolfgang Breyha.
192 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
193 When none of the hosts presented to a transport match an already-open
194 connection, close it and proceed with the list. Previously we would
195 queue the message. Spotted by Lena with Yahoo, probably involving
198 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
199 Previously a spurious "250 OK id=" response was appended to the proper
202 JH/08 The "support for" informational output now, which built with Content
203 Scanning support, has a line for the malware scanner interfaces compiled
204 in. Interface can be individually included or not at build time.
206 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
207 by the template makefile "src/EDITME". The "STREAM" support for an older
208 ClamAV interface method is removed.
210 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
211 rows affected is given instead).
213 JH/11 The runtime Berkeley DB library version is now additionally output by
214 "exim -d -bV". Previously only the compile-time version was shown.
216 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
217 SMTP connection. Previously, when one had more receipients than the
218 first, an abortive onward connection was made. Move to full support for
219 multiple onward connections in sequence, handling cutthrough connection
220 for all multi-message initiating connections.
222 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
223 routers. Previously, a multi-recipient message would fail to match the
224 onward-connection opened for the first recipient, and cause its closure.
226 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
227 a timeout on read on a GnuTLS initiating connection, resulting in the
228 initiating connection being dropped. This mattered most when the callout
229 was marked defer_ok. Fix to keep the two timeout-detection methods
232 JH/15 Relax results from ACL control request to enable cutthrough, in
233 unsupported situations, from error to silently (except under debug)
234 ignoring. This covers use with PRDR, frozen messages, queue-only and
237 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
239 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
240 metadata, resulting in a crash in free().
242 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
243 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
244 Broken also in d185889f4, with init system revamp.
246 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
247 Previously we abruptly closed the connection after reading a malware-
248 found indication; now we go on to read the "scan ok" response line,
251 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
252 ACL. Previously, a crash would result.
254 JH/19 Speed up macro lookups during configuration file read, by skipping non-
255 macro text after a replacement (previously it was only once per line) and
256 by skipping builtin macros when searching for an uppercase lead character.
258 JH/20 DANE support moved from Experimental to mainline. The Makefile control
259 for the build is renamed.
261 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
262 was allocated for every new TLS startup, meaning one per message. Fix
263 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
265 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
266 reported the original. Fix to report (as far as possible) the ACL
267 result replacing the original.
269 JH/23 Fix memory leak during multi-message connections using STARTTLS under
270 OpenSSL. Certificate information is loaded for every new TLS startup,
271 and the resources needed to be freed.
273 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
275 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
278 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
279 DATA response info to the (existing) per-recipient response info for
280 the "C=" log element. It can have useful tracking info from the
281 destination system. Patch from Simon Arlott.
283 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
284 length value. Previously this would segfault.
286 HS/02 Support Avast multiline protoocol, this allows passing flags to
287 newer versions of the scanner.
289 JH/28 Ensure that variables possibly set during message acceptance are marked
290 dead before release of memory in the daemon loop. This stops complaints
291 about them when the debug_store option is enabled. Discovered specifically
292 for sender_rate_period, but applies to a whole set of variables.
293 Do the same for the queue-runner and queue-list loops, for variables set
294 from spool message files. Do the same for the SMTP per-message loop, for
295 certain variables indirectly set in ACL operations.
297 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
298 as a multi-recipient message from a mailinglist manager). The coding had
299 an arbitrary cutoff number of characters while checking for more input;
300 enforced by writing a NUL into the buffer. This corrupted long / fast
301 input. The problem was exposed more widely when more pipelineing of SMTP
302 responses was introduced, and one Exim system was feeding another.
303 The symptom is log complaints of SMTP syntax error (NUL chars) on the
304 receiving system, and refused recipients seen by the sending system
305 (propating to people being dropped from mailing lists).
306 Discovered and pinpointed by David Carter.
308 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
309 replaced by the ${authresults } expansion.
311 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
313 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
314 allows proper process termination in container environments.
316 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
317 Previously the "final dot" had a newline after it; ensure it is CR,LF.
319 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
320 and "err_perm", deprecated since 4.83 when the RFC-defined words
321 "temperror" and "permerror" were introduced.
323 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
324 transport-filters or DKIM-signing. The restriction was lost in the
325 consolidation of verify-callout and delivery SMTP handling.
326 Extend the restriction to also cover ARC-signing.
328 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
329 in defer=pass mode supply a 450 to the initiator. Previously the message
332 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
333 tls_require_ciphers is used as before.
335 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
336 "pass_unscanned". Only tmpfails from the scanner are written to
337 the paniclog, as they may require admin intervention (permission
338 denied, license issues). Other scanner errors (like decompression
339 bombs) do not cause a paniclog entry.
341 JH/36 Fix reinitialisation of DKIM logging variable between messages.
342 Previously it was possible to log spurious information in receive log
345 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
346 triggered odd behaviour from Outlook Express clients.
348 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
351 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
352 since the IETF WG has not yet settled on that versus the original
353 "bare" representation.
355 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
356 Previously the millisecond value corrupted the output.
357 Fix also for syslog_pid=no and log_selector +pid, for which the pid
358 corrupted the output.
364 JH/01 Rework error string handling in TLS interface so that the caller in
365 more cases is responsible for logging. This permits library-sourced
366 string to be attached to addresses during delivery, and collapses
367 pairs of long lines into single ones.
369 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
370 during configuration. Wildcards are allowed and expanded.
372 JH/02 Rework error string handling in DKIM to pass more info back to callers.
373 This permits better logging.
375 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
376 do not close it down and have the child transport start it up again on
377 the passed-on TCP connection. Instead, proxy the child (and any
378 subsequent ones) for TLS via a unix-domain socket channel. Logging is
379 affected: the continued delivery log lines do not have any DNSSEC, TLS
380 Certificate or OCSP information. TLS cipher information is still logged.
382 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
383 identical IP addresses on different listening ports. Will also affect
386 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
387 add noisy ifdef guards to special-case this sillyness.
388 Patch from Bernd Kuhls.
390 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
391 than 255 are no longer allowed.
393 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
394 Disable the session-cache too, which might reduce our load. Since we
395 currrectly use a new context for every connection, both as server and
396 client, there is no benefit for these.
397 GnuTLS appears to not support tickets server-side by default (we don't
398 call gnutls_session_ticket_enable_server()) but client side is enabled
399 by default on recent versions (3.1.3 +) unless the PFS priority string
402 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
403 <https://reproducible-builds.org/specs/source-date-epoch/>.
405 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
406 the check for any unsuccessful recipients did not notice the limit, and
407 erroneously found still-pending ones.
409 JH/08 Pipeline CHUNKING command and data together, on kernels that support
410 MSG_MORE. Only in-clear (not on TLS connections).
412 JH/09 Avoid using a temporary file during transport using dkim. Unless a
413 transport-filter is involved we can buffer the headers in memory for
414 creating the signature, and read the spool data file once for the
415 signature and again for transmission.
417 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
418 4.77 as the kernel support then wasn't solid, having issues in 64bit
419 mode. Now, it's been long enough. Add support for FreeBSD also.
421 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
422 case where the routing stage had gathered several addresses to send to
423 a host before calling the transport for the first, we previously failed
424 to close down TLS in the old transport process before passing the TCP
425 connection to the new process. The new one sent a STARTTLS command
426 which naturally failed, giving a failed delivery and bloating the retry
427 database. Investigation and fix prototype from Wolfgang Breyha.
429 JH/12 Fix check on SMTP command input synchronisation. Previously there were
430 false-negatives in the check that the sender had not preempted a response
431 or prompt from Exim (running as a server), due to that code's lack of
432 awareness of the SMTP input buffering.
434 PP/04 Add commandline_checks_require_admin option.
435 Exim drops privileges sanely, various checks such as -be aren't a
436 security problem, as long as you trust local users with access to their
437 own account. When invoked by services which pass untrusted data to
438 Exim, this might be an issue. Set this option in main configuration
439 AND make fixes to the calling application, such as using `--` to stop
442 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
443 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
444 responses to those, into a single TLS record each way (this usually means
445 a single packet). As a side issue, smtp_enforce_sync now works on TLS
448 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
449 affects you only if you're dancing at the edge of the param size limits.
450 If you are, and this message makes sense to you, then: raise the
451 configured limit or use OpenSSL 1.1. Nothing we can do for older
454 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
455 cmdline element to get the documented default one. Previously it was
458 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
459 are unsuable for non-message-specific reasons - eg. connection timeout,
460 banner-time rejection.
462 JH/16 Fix logging of delivery remote port, when specified by router, under
465 PP/06 Repair manualroute's ability to take options in any order, even if one
466 is the name of a transport.
469 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
471 JH/17 Change the list-building routines interface to use the expanding-string
472 triplet model, for better allocation and copying behaviour.
474 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
475 Previously it was constructed the first time a possibly-matching string
476 was met in the configuration file input during startup; now it is done
479 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
480 compatible one, to avoid the (poorly documented) possibility of a config
481 file in the working directory redirecting the DB files, possibly correpting
482 some existing file. CVE-2017-10140 assigned for BDB.
484 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
485 cache-hot. Previously, although the result was properly cached, the
486 initial verify call returned a defer.
488 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
489 the main verify for receipient in uncached-mode.
491 JH/22 Retire historical build files to an "unsupported" subdir. These are
492 defined as "ones for which we have no current evidence of testing".
494 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
495 if present. Previously it was ignored.
497 JH/24 Start using specified-initialisers in C structure init coding. This is
498 a C99 feature (it's 2017, so now considered safe).
500 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
501 if was a fixed-sized field and bitmask ops via macros; it is now more
504 PP/07 GitHub PR 56: Apply MariaDB build fix.
505 Patch provided by Jaroslav Škarvada.
507 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
508 during Coverity cleanups [4.87 JH/47]
509 Diagnosis and fix provided by Michael Fischer v. Mollard.
511 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
512 the right size to place the terminating semicolon on its own folded
513 line, the header hash was calculated to an incorrect value thanks to
514 the (relaxed) space the fold became.
516 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
517 and confused the parent.
519 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
520 which could crash as a result. This could lead to undeliverable messages.
522 JH/28 Logging: "next input sent too soon" now shows where input was truncated
525 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
526 matters on fast-turnover and PID-randomising systems, which were getting
527 out-of-order delivery.
529 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
530 a possibly-overlapping copy. The symptom was that "Remote host closed
531 connection in response to HELO" was logged instead of the actual 4xx
534 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
535 Previously only that bufferd was discarded, resulting in SYMTP command
538 JH/32 DKIM: when a message has multiple signatures matching an identity given
539 in dkim_verify_signers, run the dkim acl once for each. Previously only
540 one run was done. Bug 2189.
542 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
543 "panic the current process" to "deliberately defer". The panic log is
544 still written with the problem list name; the mail and reject logs now
545 get a temp-reject line for the message that was being handled, saying
546 something like "domains check lookup or other defer". The SMTP 451
547 message is still "Temporary local problem".
549 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
550 A crafted sequence of BDAT commands could result in in-use memory beeing
551 freed. CVE-2017-16943.
553 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
554 from SMTP input. Previously it was always done; now only done for DATA
555 and not BDAT commands. CVE-2017-16944.
557 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
558 to the message (such as an overlong header line). Previously this was
559 not done and we did not exit BDAT mode. Followon from the previous item
560 though a different problem.
566 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
567 than -2003 did; needs libidn2 in addition to libidn.
569 JH/02 The path option on a pipe transport is now expanded before use.
571 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
572 Patch provided by "Björn", documentation fix added too.
574 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
575 missing a wire-to-host endian conversion.
577 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
578 close after a BDAT command line could be taken as a following command,
579 giving a synch failure. Fix by only checking for synch immediately
580 before acknowledging the chunk.
582 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
583 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
584 macro. Patches provided by Josh Soref.
586 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
587 Previously we did not; the RFC seems ambiguous and VRFY is not listed
588 by IANA as a service extension. However, John Klensin suggests that we
591 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
592 the dkim code may be unix-mode line endings rather than smtp wire-format
593 CRLF, so prepend a CR to any bare LF.
595 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
596 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
598 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
599 the first were themselves being wrongly included in the feed into dkim
600 processing; with most chunk sizes in use this resulted in an incorrect
601 body hash calculated value.
603 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
604 DKIM signature block, for verification. Although advised against by
605 standards it is specifically not ruled illegal.
607 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
609 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
610 missing a body hash (the bh= tag).
612 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
613 It seems that HAProxy sends the Proxy Protocol information in clear and
614 only then does a TLS startup, so do the same.
616 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
617 TCP connections (such as for Spamd) unless the daemon successfully set
618 Fast Open mode on its listening sockets. This fixes breakage seen on
619 too-old kernels or those not configured for Fast Open, at the cost of
620 requiring both directions being enabled for TFO, and TFO never being used
621 by non-daemon-related Exim processes.
623 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
624 endings, at least on the first header line. Try to canonify any that get
625 past that check, despite the cost.
627 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
628 now limited to an arbitrary five deep, while parsing addresses with the
629 strip_excess_angle_brackets option enabled.
631 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
632 instead leave the unprompted TLS handshake in socket buffer for the
633 TLS library to consume.
635 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
637 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
639 JH/16 Drop variables when they go out of scope. Memory management drops a whole
640 region in one operation, for speed, and this leaves assigned pointers
641 dangling. Add checks run only under the testsuite which checks all
642 variables at a store-reset and panics on a dangling pointer; add code
643 explicitly nulling out all the variables discovered. Fixes one known
644 bug: a transport crash, where a dangling pointer for $sending_ip_address
645 originally assigned in a verify callout, is re-used.
647 PP/06 Drop '.' from @INC in various Perl scripts.
649 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
651 PP/08 Reduce a number of compilation warnings under clang; building with
652 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
653 should be warning-free.
655 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
657 HS/01 Fix portability problems introduced by PP/08 for platforms where
658 realloc(NULL) is not equivalent to malloc() [SunOS et al].
660 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
661 chunk. This allows us to accept broken chunked messages. We need a more
662 general solution here.
664 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
665 already-broken messages in the queue.
667 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
669 JH/19 Fix reference counting bug in routing-generated-address tracking.
675 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
676 supports it and a size is available (ie. the sending peer gave us one).
678 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
679 years of being deprecated). The replacements are the ACLs
680 acl_smtp_mime and acl_not_smtp_mime.
682 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
683 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
684 or even an in-clear connection were permitted. Now, if the host lookup
685 was dnssec and dane was requested then the host is only used if the
686 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
687 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
688 if one fails this test.
689 This means that a poorly-configured remote DNS will make it incommunicado;
690 but it protects against a DNS-interception attack on it.
692 JH/04 Bug 1810: make continued-use of an open smtp transport connection
693 non-noisy when a race steals the message being considered.
695 JH/05 If main configuration option tls_certificate is unset, generate a
696 self-signed certificate for inbound TLS connections.
698 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
699 in rewrites and routers.
701 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
702 and logged a warning sing 4.83; now they are a configuration file error.
704 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
705 (lacking @domain). Apply the same qualification processing as RCPT.
707 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
709 JH/10 Support ${sha256:} applied to a string (as well as the previous
712 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
713 a cutthrough deliver is pending, as we always want to make a connection.
714 This also avoids re-routing the message when later placing the cutthrough
715 connection after a verify cache hit.
716 Do not update it with the verify result either.
718 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
719 when routing results in more than one destination address.
721 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
722 signing (which inhibits the cutthrough capability). Previously only
723 the presence of an option was tested; now an expansion evaluating as
724 empty is permissible (obviously it should depend only on data available
725 when the cutthrough connection is made).
727 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
728 the relevant preceding SMTP command did not note the pipelining mode.
730 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
731 Previously they were not counted.
733 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
734 as one having no matching records. Previously we deferred the message
735 that needed the lookup.
737 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
738 distinguished as "(=".
740 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
741 for missing MX records. Previously it only worked for missing A records.
743 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
745 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
746 after the data-go-ahead and data-ack. Patch from Jason Betts.
748 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
749 even for a "none" policy. Patch from Tony Meyer.
751 JH/22 Fix continued use of a connection for further deliveries. If a port was
752 specified by a router, it must also match for the delivery to be
755 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
756 When one of the recipients of a message was unsuitable for the connection
757 (has no matching addresses), we lost track of needing to mark it
758 deferred. As a result mail would be lost.
760 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
762 JH/25 Decoding ACL controls is now done using a binary search; the source code
763 takes up less space and should be simpler to maintain. Merge the ACL
764 condition decode tables also, with similar effect.
766 JH/26 Fix problem with one_time used on a redirect router which returned the
767 parent address unchanged. A retry would see the parent address marked as
768 delivered, so not attempt the (identical) child. As a result mail would
771 JH/27 Fix a possible security hole, wherein a process operating with the Exim
772 UID can gain a root shell. Credit to http://www.halfdog.net/ for
773 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
776 JH/28 Enable {spool,log} filesystem space and inode checks as default.
777 Main config options check_{log,spool}_{inodes,space} are now
778 100 inodes, 10MB unless set otherwise in the configuration.
780 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
781 Previously it only applied to the main-section connection policy
784 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
786 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
787 by me. Added RFC7919 DH primes as an alternative.
789 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
790 are not in the system include path.
792 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
793 GnuTLS, when a session startup failed (eg because the client disconnected)
794 Exim did stdio operations after fclose. This was exposed by a recent
795 change which nulled out the file handle after the fclose.
797 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
798 signed directly by the cert-signing cert, rather than an intermediate
799 OCSP-signing cert. This is the model used by LetsEncrypt.
801 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
803 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
804 an incoming connection.
806 HS/02 Bug 1802: Do not half-close the connection after sending a request
809 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
810 fallback to "prime256v1".
812 JH/34 SECURITY: Use proper copy of DATA command in error message.
813 Could leak key material. Remotely exploitable. CVE-2016-9963.
819 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
820 and 3.4.4 - once the server is enabled to respond to an OCSP request
821 it does even when not requested, resulting in a stapling non-aware
822 client dropping the TLS connection.
824 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
825 support variable-length bit vectors. No functional change.
827 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
828 The I= interface field on outgoing lines is now after the H= remote
829 host field, same as incoming lines. There is a separate
830 outgoing_interface log selector which allows you to disable the
833 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
834 If not running log_selector +smtp_connection the mainlog would be held
835 open indefinitely after a "too many connections" event, including to a
836 deleted file after a log rotate. Leave the per net connection logging
837 leaving it open for efficiency as that will be quickly detected by the
838 check on the next write.
840 HS/01 Bug 1671: Fix post transport crash.
841 Processing the wait-<transport> messages could crash the delivery
842 process if the message IDs didn't exist for some reason. When
843 using 'split_spool_directory=yes' the construction of the spool
844 file name failed already, exposing the same netto behaviour.
846 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
847 mime_regex ACL conditions.
849 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
850 to DSN fail messages (bounces): remote IP, remote greeting, remote response
851 to HELO, local diagnostic string.
853 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
854 log line to debug. Even when configured with a tls authenticator many
855 client connections are expected to not authenticate in this way, so
856 an authenticate fail is not an error.
858 HS/02 Add the Exim version string to the process info. This way exiwhat
859 gives some more detail about the running daemon.
861 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
862 matter for fast-change records such as DNSBLs.
864 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
865 retry record, even if constant. There may be multiple transports with
866 different interface settings and the retry behaviour needs to be kept
869 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
871 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
873 JH/10 Bug 840: fix log_defer_output option of pipe transport
875 JH/11 Bug 830: use same host for all RCPTS of a message, even under
876 hosts_randomize. This matters a lot when combined with mua_wrapper.
878 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
879 ${quote_pgsql:<string>} operator.
881 JH/13 Bug 1708: avoid misaligned access in cached lookup.
883 JH/14 Change header file name for freeradius-client. Relevant if compiling
884 with Radius support; from the Gentoo tree and checked under Fedora.
886 JH/15 Bug 1712: Introduce $prdr_requested flag variable
888 JH/16 Bug 1714: Permit an empty string as expansion result for transport
889 option transport_filter, meaning no filtering.
891 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
893 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
894 defaults to "*" (all hosts). The variable is now available when not built
895 with TLS, default unset, mainly to enable keeping the testsuite sane.
896 If a server certificate is not supplied (via tls_certificate) an error is
897 logged, and clients will find TLS connections fail on startup. Presumably
898 they will retry in-clear.
899 Packagers of Exim are strongly encouraged to create a server certificate
900 at installation time.
902 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
903 with the $config_file variable.
905 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
906 in transport context, after the attempt, and per-recipient. The latter type
907 is per host attempted. The event data is the error message, and the errno
908 information encodes the lookup type (A vs. MX) used for the (first) host,
909 and the trailing two digits of the smtp 4xx response.
911 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
912 to write to mainlog (or rejectlog, paniclog) in the window between file
913 creation and permissions/ownership being changed. Particularly affects
914 installations where exicyclog is run as root, rather than exim user;
915 result is that the running daemon panics and dies.
917 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
919 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
920 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
921 "pri" and "weight". Note that the previous implicit priority given by the
922 list order is no longer honoured.
924 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
927 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
928 by defining SUPPORT_SOCKS.
930 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
931 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
932 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
933 variables are renamed to proxy_{local,external}_{address,port}.
935 JH/27 Move Internationalisation support from Experimental to mainline, enabled
936 for a build by defining SUPPORT_I18N
938 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
939 of the query string, and make ${quote_redis:} do that quoting.
941 JH/29 Move Events support from Experimental to mainline, enabled by default
942 and removable for a build by defining DISABLE_EVENT.
944 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
946 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
947 cached by the daemon.
949 JH/32 Move Redis support from Experimental to mainline, enabled for a build
950 by defining LOOKUP_REDIS. The libhiredis library is required.
952 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
953 keys are given for lookup.
955 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
956 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
957 only supported when built with TLS support. The PolarSSL SHA routines
958 are still used when the TLS library is too old for convenient support.
960 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
961 openssl_options), for security. OpenSSL forces this from version 1.1.0
962 server-side so match that on older versions.
964 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
965 allocation for $value could be released as the expansion processing
966 concluded, but leaving the global pointer active for it.
968 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
969 and to use the domains and local_parts ACL conditions.
971 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
972 incorrectly not doubled on cutthrough transmission, hence seen as a
973 body-termination at the receiving system - resulting in truncated mails.
974 Commonly the sender saw a TCP-level error, and retransmitted the message
975 via the normal store-and-forward channel. This could result in duplicates
976 received - but deduplicating mailstores were liable to retain only the
977 initial truncated version.
979 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
981 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
983 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
984 we're in there, support oversigning also; bug 1309.
986 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
988 HS/04 Add support for keep_environment and add_environment options.
990 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
991 either intentional arithmetic overflow during PRNG, or testing config-
994 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
995 delivery resulted in actual delivery. Cancel cutthrough before DATA
998 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
999 rejects a recipient: pass the reject to the originator.
1001 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1002 Many were false-positives and ignorable, but it's worth fixing the
1005 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1006 for the new environment-manipulation done at startup. Move the routines
1007 from being local to tls.c to being global via the os.c file.
1009 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1010 an extract embedded as result-arg for a map, the first arg for extract
1011 is unavailable so we cannot tell if this is a numbered or keyed
1012 extraction. Accept either.
1018 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1021 JH/02 The smtp transport option "multi_domain" is now expanded.
1023 JH/03 The smtp transport now requests PRDR by default, if the server offers
1026 JH/04 Certificate name checking on server certificates, when exim is a client,
1027 is now done by default. The transport option tls_verify_cert_hostnames
1028 can be used to disable this per-host. The build option
1029 EXPERIMENTAL_CERTNAMES is withdrawn.
1031 JH/05 The value of the tls_verify_certificates smtp transport and main options
1032 default to the word "system" to access the system default CA bundle.
1033 For GnuTLS, only version 3.0.20 or later.
1035 JH/06 Verification of the server certificate for a TLS connection is now tried
1036 (but not required) by default. The verification status is now logged by
1037 default, for both outbound TLS and client-certificate supplying inbound
1040 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1043 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1044 Status Notification (bounce) messages are now MIME format per RFC 3464.
1045 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1046 under the control of the dsn_advertise_hosts option, and routers may
1047 have a dsn_lasthop option.
1049 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1050 default, modifiable by a malware= option. The list separator for
1051 the options can now be changed in the usual way. Bug 68.
1053 JH/10 The smtp_receive_timeout main option is now expanded before use.
1055 JH/11 The incoming_interface log option now also enables logging of the
1056 local interface on delivery outgoing connections.
1058 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1059 if the interface and destination host and port all match.
1061 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1064 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1065 Patch from Andrew Lewis.
1067 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1068 now supports optional time-restrictions, weighting, and priority
1069 modifiers per server. Patch originally by <rommer@active.by>.
1071 JH/16 The spamd_address main option now supports a mixed list of local
1072 and remote servers. Remote servers can be IPv6 addresses, and
1073 specify a port-range.
1075 JH/17 Bug 68: The spamd_address main option now supports an optional
1076 timeout value per server.
1078 JH/18 Bug 1581: Router and transport options headers_add/remove can
1079 now have the list separator specified.
1081 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1084 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1087 JH/21 Support for the A6 type of dns record is withdrawn.
1089 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1090 rather than the verbs used.
1092 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1093 from 255 to 1024 chars.
1095 JH/24 Verification callouts now attempt to use TLS by default.
1097 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1098 are generic router options now. The defaults didn't change.
1100 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1101 Original patch from Alexander Shikoff, worked over by JH.
1103 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1104 files if ZCAT_COMMAND is not executable.
1106 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1108 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1110 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1111 Normally benign, it bites when the pair was led to by a CNAME;
1112 modern usage is to not canonicalize the domain to a CNAME target
1113 (and we were inconsistent anyway for A-only vs AAAA+A).
1115 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1117 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1118 when evaluating $sender_host_dnssec.
1120 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1121 $sender_helo_dnssec variable.
1123 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1125 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1127 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1129 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1130 documented as working, but never had. Support all but $spam_report.
1132 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1133 added for tls authenticator.
1135 HS/03 Add perl_taintmode main config option
1141 TL/01 When running the test suite, the README says that variables such as
1142 no_msglog_check are global and can be placed anywhere in a specific
1143 test's script, however it was observed that placement needed to be near
1144 the beginning for it to behave that way. Changed the runtest perl
1145 script to read through the entire script once to detect and set these
1146 variables, reset to the beginning of the script, and then run through
1147 the script parsing/test process like normal.
1149 TL/02 The BSD's have an arc4random API. One of the functions to induce
1150 adding randomness was arc4random_stir(), but it has been removed in
1151 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1152 function when detected.
1154 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1155 cause callback expansion.
1157 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1158 syntax errors in an expansion can be treated as a string instead of
1159 logging or causing an error, due to the internal use of bool_lax
1160 instead of bool when processing it.
1162 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1163 server certificates when making smtp deliveries.
1165 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1167 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1169 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1171 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1172 Merged patch from Sebastian Wiedenroth.
1174 JH/05 Fix results-pipe from transport process. Several recipients, combined
1175 with certificate use, exposed issues where response data items split
1176 over buffer boundaries were not parsed properly. This eventually
1177 resulted in duplicates being sent. This issue only became common enough
1178 to notice due to the introduction of connection certificate information,
1179 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1181 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1182 size buffer was used, resulting in syntax errors when an expansion
1185 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1186 version 3.3.6 or later.
1188 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1189 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1190 both become "event_action", the variables become $event_name, $event_data
1191 and $event_defer_errno. There is a new variable $verify_mode, usable in
1192 routers, transports and related events. The tls:cert event is now also
1193 raised for inbound connections, if the main configuration event_action
1196 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1197 early OCSP support, but no stapling (appears to be less than 1.0.0).
1199 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1200 server certificate names available under the smtp transport option
1201 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1204 JH/10 Time-related extraction expansions from certificates now use the main
1205 option "timezone" setting for output formatting, and are consistent
1206 between OpenSSL and GnuTLS compilations. Bug 1541.
1208 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1209 encoded parameter in the incoming message. Bug 1558.
1211 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1212 include certificate info, eximon was claiming there were spoolfile
1215 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1217 JH/14 Log delivery-related information more consistently, using the sequence
1218 "H=<name> [<ip>]" wherever possible.
1220 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1221 are problematic for Debian distribution, omit them from the release
1224 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1226 JH/16 Fix string representation of time values on 64bit time_t architectures.
1229 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1230 output list separator was used.
1235 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1236 checkers that were complaining about end of non-void function with no
1239 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1240 This was a regression introduced in 4.83 by another bugfix.
1242 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1244 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1245 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1251 TF/01 Correctly close the server side of TLS when forking for delivery.
1253 When a message was received over SMTP with TLS, Exim failed to clear up
1254 the incoming connection properly after forking off the child process to
1255 deliver the message. In some situations the subsequent outgoing
1256 delivery connection happened to have the same fd number as the incoming
1257 connection previously had. Exim would try to use TLS and fail, logging
1258 a "Bad file descriptor" error.
1260 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1261 utilities have not been installed.
1263 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1264 temporary space as the ACL may create new global variables.
1266 TL/01 LDAP support uses per connection or global context settings, depending
1267 upon the detected version of the libraries at build time.
1269 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1270 to extract and use the src ip:port in logging and expansions as if it
1271 were a direct connection from the outside internet. PPv2 support was
1272 updated based on HAProxy spec change in May 2014.
1274 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1276 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1277 Properly escape header and check for NULL return.
1279 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1282 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1284 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1285 characters in header names, implemented as a verify condition.
1286 Contributed by Michael Fischer v. Mollard.
1288 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1289 results permerror and temperror. Previous values are deprecated but
1290 still accepted. In a future release, err_perm and err_temp will be
1291 completely removed, which will be a backward incompatibility if the
1292 ACL tests for either of these two old results. Patch contributed by
1293 user bes-internal on the mailing list.
1295 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1297 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1298 selectors, in both main and reject logs.
1300 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1303 JH/07 Add malware type "sock" for talking to simple daemon.
1305 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1307 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1308 routers/transports under cutthrough routing.
1310 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1311 numbers. Touch up "bool" conditional to keep the same definition.
1313 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1315 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1317 JH/12 Expand items in router/transport headers_add or headers_remove lists
1318 individually rather than the list as a whole. Bug 1452.
1320 Required for reasonable handling of multiple headers_ options when
1321 they may be empty; requires that headers_remove items with embedded
1322 colons must have them doubled (or the list-separator changed).
1324 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1325 view the policy declared in the DMARC record. Currently, $dmarc_status
1326 is a combined value of both the record presence and the result of the
1329 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1331 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1332 dnslookup router and the smtp transport (applying to the forward
1335 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1336 of ldap servers used for a specific lookup. Patch provided by Heiko
1339 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1340 New variable $lookup_dnssec_authenticated for observability.
1342 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1343 Patch submitted by Lars Timman.
1345 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1347 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1348 Requires trusted mode and valid format message id, aborts otherwise.
1349 Patch contributed by Heiko Schlichting.
1351 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1352 certextract with support for various fields. Bug 1358.
1354 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1355 is requested by default, modifiable by smtp transport option
1358 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1359 operate on certificate variables to give certificate fingerprints
1360 Also new ${sha256:cert_variable}.
1362 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1364 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1365 Christian Aistleitner.
1367 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1369 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1370 file. Patch from Wolfgang Breyha.
1372 JH/25 Expand the coverage of the delivery $host and $host_address to
1373 client authenticators run in verify callout. Bug 1476.
1375 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1376 align with daemon_smtp_ports. Bug 72.
1378 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1379 support and error reporting did not work properly.
1381 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1382 and is readable. Patch from Andrew Colin Kissa.
1384 TL/14 Enhance documentation of ${run expansion and how it parses the
1385 commandline after expansion, particularly in the case when an
1386 unquoted variable expansion results in an empty value.
1388 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1390 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1391 by renaming away from it. Addresses GH issue 15, reported by
1394 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1396 TL/15 SECURITY: prevent double expansion in math comparison functions
1397 (can expand unsanitized data). Not remotely exploitable.
1404 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1406 PP/02 Make -n do something, by making it not do something.
1407 When combined with -bP, the name of an option is not output.
1409 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1412 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1413 $sender_host_name and config options to manage this, and basic check
1416 PP/05 DSCP support for outbound connections and control modifier for inbound.
1418 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1419 (Only plugin which currently uses this is kerberos4, which nobody should
1420 be using, but we should make it available and other future plugins might
1421 conceivably use it, even though it would break NAT; stuff *should* be
1422 using channel bindings instead).
1424 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1425 name; added for Sendmail compatibility; requires admin caller.
1426 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1427 just ignore it); requires trusted caller.
1428 Also parse but ignore: -Ac -Am -X<logfile>
1431 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1433 TL/02 Add +smtp_confirmation as a default logging option.
1435 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1436 Patch by Magnus Holmgren from 2007-02-20.
1438 TL/04 Bugzilla 1281 - Spec typo.
1439 Bugzilla 1283 - Spec typo.
1440 Bugzilla 1290 - Spec grammar fixes.
1442 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1444 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1446 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1447 mailing list by by Dmitry Isaikin.
1449 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1451 JH/02 Support "G" suffix to numbers in ${if comparisons.
1453 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1455 NM/01 Bugzilla 1197 - Spec typo
1456 Bugzilla 1196 - Spec examples corrections
1458 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1460 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1461 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1464 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1465 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1467 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1468 "acl {{name}{arg}...}", and optional args on acl condition
1471 JH/05 Permit multiple router/transport headers_add/remove lines.
1473 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1475 JH/07 Avoid using a waiting database for a single-message-only transport.
1476 Performance patch from Paul Fisher. Bugzilla 1262.
1478 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1481 JH/09 Add $headers_added variable, with content from use of ACL modifier
1482 add_header (but not yet added to the message). Bugzilla 199.
1484 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1485 Pulled from Bugzilla 817 by Wolfgang Breyha.
1487 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1489 (nb: this is the same fix as in Exim 4.80.1)
1491 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1494 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1497 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1499 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1500 advertise SMTP AUTH mechanism to us, instead of a generic
1501 protocol violation error. Also, make Exim more robust to bad
1502 data from the Dovecot auth socket.
1504 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1506 When a queue runner is handling a message, Exim first routes the
1507 recipient addresses, during which it prunes them based on the retry
1508 hints database. After that it attempts to deliver the message to
1509 any remaining recipients. It then updates the hints database using
1512 So if a recipient address works intermittently, it can get repeatedly
1513 deferred at routing time. The retry hints record remains fresh so the
1514 address never reaches the final cutoff time.
1516 This is a fairly common occurrence when a user is bumping up against
1517 their storage quota. Exim had some logic in its local delivery code
1518 to deal with this. However it did not apply to per-recipient defers
1519 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1521 This change adds a proper retry rule check during routing so that the
1522 final cutoff time is checked against the message's age. We only do
1523 this check if there is an address retry record and there is not a
1524 domain retry record; this implies that previous attempts to handle
1525 the address had the retry_use_local_parts option turned on. We use
1526 this as an approximation for the destination being like a local
1527 delivery, as in LMTP.
1529 I suspect this new check makes the old local delivery cutoff check
1530 redundant, but I have not verified this so I left the code in place.
1532 TF/02 Correct gecos expansion when From: is a prefix of the username.
1534 Test 0254 submits a message to Exim with the header
1538 When I ran the test suite under the user fanf2, Exim expanded
1539 the header to contain my full name, whereas it should have added
1540 a Resent-Sender: header. It erroneously treats any prefix of the
1541 username as equal to the username.
1543 This change corrects that bug.
1545 GF/01 DCC debug and logging tidyup
1546 Error conditions log to paniclog rather than rejectlog.
1547 Debug lines prefixed by "DCC: " to remove any ambiguity.
1549 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1551 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1552 Bug spotted by Jeremy Harris; was flawed since initial commit.
1553 Would have resulted in OCSP responses post-SNI triggering an Exim
1554 NULL dereference and crash.
1556 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1558 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1559 Bug detection, analysis and fix by Samuel Thibault.
1560 Bugzilla 1331, Debian bug #698092.
1562 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1564 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1565 Server implementation by Todd Lyons, client by JH.
1566 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1567 config variable "prdr_enable" controls whether the server
1568 advertises the facility. If the client requests PRDR a new
1569 acl_data_smtp_prdr ACL is called once for each recipient, after
1570 the body content is received and before the acl_smtp_data ACL.
1571 The client is controlled by both of: a hosts_try_prdr option
1572 on the smtp transport, and the server advertisement.
1573 Default client logging of deliveries and rejections involving
1574 PRDR are flagged with the string "PRDR".
1576 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1577 fclose(). Diagnosis by Todd Lyons.
1579 PP/17 Update configure.default to handle IPv6 localhost better.
1580 Patch by Alain Williams (plus minor tweaks).
1583 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1584 This is now consistent with GnuTLS, and is now documented: the
1585 previous undocumented portable approach to treating the option as
1586 unset was to force an expansion failure. That still works, and
1587 an empty string is now equivalent.
1589 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1590 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1591 not performing validation itself.
1593 PP/20 Added force_command boolean option to pipe transport.
1594 Patch from Nick Koston, of cPanel Inc.
1596 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1599 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1601 PP/21 Fix eximon continuous updating with timestamped log-files.
1602 Broken in a format-string cleanup in 4.80, missed when I repaired the
1603 other false fix of the same issue.
1604 Report and fix from Heiko Schlichting.
1607 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1608 Report from Prashanth Katuri.
1610 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1611 It's SecureTransport, so affects any MacOS clients which use the
1612 system-integrated TLS libraries, including email clients.
1614 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1615 using a MIME ACL for non-SMTP local injection.
1616 Report and assistance in diagnosis by Warren Baker.
1618 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1620 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1622 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1623 last id that failed so it may be referenced in subsequent ACL's.
1625 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1628 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1629 ldap library initialization, allowing self-signed CA's to be
1630 used. Also properly sets require_cert option later in code by
1631 using NULL (global ldap config) instead of ldap handle (per
1632 session). Bug diagnosis and testing by alxgomz.
1634 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1635 the src/util/ subdirectory.
1637 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1638 renamed to Transport Post Delivery Action by Jeremy Harris, as
1641 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1642 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1643 redis_servers = needs to be configured which will be used by the redis
1644 lookup. Patch from Warren Baker, of The Packet Hub.
1646 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1648 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1649 hostname or reverse DNS when processing a host list. Used suggestions
1650 from multiple comments on this bug.
1652 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1654 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1655 Missed a few lines, added it to make the runtest require no keyboard
1658 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1659 contains upper case chars. Make router use caseful_local_part.
1661 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1662 support when GnuTLS has been built with p11-kit.
1668 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1670 This, or similar/improved, will also be change PP/11 of 4.82.
1676 PP/01 Handle short writes when writing local log-files.
1677 In practice, only affects FreeBSD (8 onwards).
1678 Bugzilla 1053, with thanks to Dmitry Isaikin.
1680 NM/01 Bugzilla 949 - Documentation tweak
1682 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1685 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1687 PP/02 Implemented gsasl authenticator.
1689 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1691 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1692 `pkg-config foo` for cflags/libs.
1694 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1695 with rest of GSASL and with heimdal_gssapi.
1697 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1698 `pkg-config foo` for cflags/libs for the TLS implementation.
1700 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1701 properties get this fed in as external SSF. A number of robustness
1702 and debugging improvements to the cyrus_sasl authenticator.
1704 PP/08 cyrus_sasl server now expands the server_realm option.
1706 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1707 Patch by Jeremy Harris.
1709 PP/10 Added dbmjz lookup type.
1711 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1713 PP/12 MAIL args handles TAB as well as SP, for better interop with
1714 non-compliant senders.
1715 Analysis and variant patch by Todd Lyons.
1717 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1718 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1719 Patch from Dirk Mueller <dmueller@suse.com>
1721 PP/13 tls_peerdn now print-escaped for spool files.
1722 Observed some $tls_peerdn in wild which contained \n, which resulted
1723 in spool file corruption.
1725 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1726 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1727 or write after TLS renegotiation, which otherwise led to messages
1730 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1731 as a tracking header (ie: a signed header comes before the signature).
1732 Patch from Wolfgang Breyha.
1734 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1735 comma-sep list; embedded commas doubled.
1737 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1739 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1741 Report and patch from Dmitry Banschikov.
1743 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1744 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1745 failures. We appear to now support TLS1.1+ with Exim.
1747 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1748 lets Exim select keys and certificates based upon TLS SNI from client.
1749 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1750 before an outbound SMTP session. New log_selector, +tls_sni.
1752 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1753 NULL dereference. Report and patch from Alun Jones.
1755 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1756 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1757 Not seeing resolver debug output on NetBSD, but suspect this is a
1758 resolver implementation change.
1760 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1761 Left warnings. Added "eximon gdb" invocation mode.
1763 PP/21 Defaulting "accept_8bitmime" to true, not false.
1765 PP/22 Added -bw for inetd wait mode support.
1767 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1768 locate the relevant includes and libraries. Made this the default.
1770 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1771 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1773 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1774 This may cause build issues on older platforms.
1776 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1777 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1778 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1779 Added SNI support via GnuTLS too.
1780 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1782 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1784 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1785 Applied second patch from Janne, implementing suggestion to default
1786 multiple-strings-in-record handling to match SPF spec.
1788 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1790 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1791 read-only, out of scope).
1792 Patch from Wolfgang Breyha, report from Stuart Northfield.
1794 PP/29 Fix three issues highlighted by clang analyser static analysis.
1795 Only crash-plausible issue would require the Cambridge-specific
1796 iplookup router and a misconfiguration.
1797 Report from Marcin Mirosław.
1799 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1801 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1802 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1803 As part of this, removing so much warning spew let me fix some minor
1804 real issues in debug logging.
1806 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1807 assignment on my part. Fixed.
1809 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1810 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1811 Janne Snabb (who went above and beyond: thank you).
1813 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1814 string otherwise requires a connection and a bunch more work and it's
1815 relatively easy to get wrong. Should also expose TLS library linkage
1818 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1819 64-bit ${eval} (JH/03).
1821 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1822 GNU libc to support some of the 64-bit stuff, should not lead to
1823 conflicts. Defined before os.h is pulled in, so if a given platform
1824 needs to override this, it can.
1826 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1827 protection layer was required, which is not implemented.
1828 Bugzilla 1254, patch from Wolfgang Breyha.
1830 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1831 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1832 tls_dhparam take prime identifiers. Also unbreak combination of
1833 OpenSSL+DH_params+TLSSNI.
1835 PP/39 Disable SSLv2 by default in OpenSSL support.
1841 PP/01 Solaris build fix for Oracle's LDAP libraries.
1842 Bugzilla 1109, patch from Stephen Usher.
1844 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1846 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1849 TF/02 Fix a couple more cases where we did not log the error message
1850 when unlink() failed. See also change 4.74-TF/03.
1852 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1853 lock up or crash if it happened to be inside a call to libc when it
1854 got a SIGUSR1 from exiwhat.
1856 The SIGUSR1 handler appends the current process status to the process
1857 log which is later printed by exiwhat. It used to use the general
1858 purpose logging code to do this, but several functions it calls are
1859 not safe for signals.
1861 The new output code in the SIGUSR1 handler is specific to the process
1862 log, and simple enough that it's easy to inspect for signal safety.
1863 Removing some special cases also simplifies the general logging code.
1864 Removing the spurious timestamps from the process log simplifies
1867 TF/04 Improved ratelimit ACL condition.
1869 The /noupdate option has been deprecated in favour of /readonly which
1870 has clearer semantics. The /leaky, /strict, and /readonly update modes
1871 are mutually exclusive. The update mode is no longer included in the
1872 database key; it just determines when the database is updated. (This
1873 means that when you upgrade Exim will forget old rate measurements.)
1875 Exim now checks that the per_* options are used with an update mode that
1876 makes sense for the current ACL. For example, when Exim is processing a
1877 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1878 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1879 must specify per_mail/readonly. If you omit the update mode it defaults to
1880 /leaky where that makes sense (as before) or /readonly where required.
1882 The /noupdate option is now undocumented but still supported for
1883 backwards compatibility. It is equivalent to /readonly except that in
1884 ACLs where /readonly is required you may specify /leaky/noupdate or
1885 /strict/noupdate which are treated the same as /readonly.
1887 A useful new feature is the /count= option. This is a generalization
1888 of the per_byte option, so that you can measure the throughput of other
1889 aggregate values. For example, the per_byte option is now equivalent
1890 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1892 The per_rcpt option has been generalized using the /count= mechanism
1893 (though it's more complicated than the per_byte equivalence). When it is
1894 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1895 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1896 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1897 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1898 Note that using per_rcpt with a non-readonly update mode in more than
1899 one ACL will cause the recipients to be double-counted. (The per_mail
1900 and per_byte options don't have this problem.)
1902 The handling of very low rates has changed slightly. If the computed rate
1903 is less than the event's count (usually one) then this event is the first
1904 after a long gap. In this case the rate is set to the same as this event's
1905 count, so that the first message of a spam run is counted properly.
1907 The major new feature is a mechanism for counting the rate of unique
1908 events. The new per_addr option counts the number of different
1909 recipients that someone has sent messages to in the last time period. It
1910 behaves like per_rcpt if all the recipient addresses are different, but
1911 duplicate recipient addresses do not increase the measured rate. Like
1912 the /count= option this is a general mechanism, so the per_addr option
1913 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1914 example, measure the rate that a client uses different sender addresses
1915 with the options per_mail/unique=$sender_address. There are further
1916 details in the main documentation.
1918 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1920 TF/06 Removed a few PCRE remnants.
1922 TF/07 Automatically extract Exim's version number from tags in the git
1923 repository when doing development or release builds.
1925 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1926 Bugzilla 879. Patch from Paul Fisher.
1928 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1929 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1932 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1934 PP/05 Variable $av_failed, true if the AV scanner deferred.
1935 Bugzilla 1078. Patch from John Horne.
1937 PP/06 Stop make process more reliably on build failure.
1938 Bugzilla 1087. Patch from Heiko Schlittermann.
1940 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1941 Bugzilla 1089. Patch from Heiko Schlittermann.
1943 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1944 Bugzilla 1131. Patch from Holger Weiß.
1946 PP/09 Handle IPv6 addresses with SPF.
1947 Bugzilla 860. Patch from Wolfgang Breyha.
1949 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1951 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1954 PP/11 match_* no longer expand right-hand-side by default.
1955 New compile-time build option, EXPAND_LISTMATCH_RHS.
1956 New expansion conditions, "inlist", "inlisti".
1958 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1960 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1962 PP/14 fix log_write() format string regression from TF/03.
1963 Bugzilla 1152. Patch from Dmitry Isaikin.
1969 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1971 PP/02 Harmonised TLS library version reporting; only show if debugging.
1972 Layout now matches that introduced for other libraries in 4.74 PP/03.
1974 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1976 PP/04 New "dns_use_edns0" global option.
1978 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1981 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1982 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1984 TK/01 Updated PolarSSL code to 0.14.2.
1985 Bugzilla 1097. Patch from Andreas Metzler.
1987 PP/07 Catch divide-by-zero in ${eval:...}.
1988 Fixes bugzilla 1102.
1990 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1993 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1994 format-string attack -- SECURITY: remote arbitrary code execution.
1996 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1997 time unintentionally subject to list matching rules, letting the header
1998 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1999 arbitrary string expansion). This allowed for information disclosure.
2001 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2002 INT_MIN/-1 -- value coerced to INT_MAX.
2008 NM/01 Workaround for PCRE version dependency in version reporting
2011 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2012 This fixes portability to compilers other than gcc, notably
2013 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2015 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2016 makefiles for portability to HP-UX and POSIX correctness.
2018 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2019 Also via indented variable definition in the Makefile.
2020 (Debugging by Oliver Heesakkers).
2022 PP/02 Restore caching of spamd results with expanded spamd_address.
2023 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2025 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2026 Improves build reliability. Fix from: Frank Elsner
2028 NM/02 Fix wide character breakage in the rfc2047 coding
2029 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2031 NM/03 Allow underscore in dnslist lookups
2032 Fixes bug 1026. Patch from Graeme Fowler
2034 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2035 Code patches from Adam Ciarcinski of NetBSD.
2037 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2040 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2041 is logged, to avoid truncation. Patch from John Horne.
2043 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2044 Patch from Jakob Hirsch.
2046 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2047 SQL string expansion failure details.
2048 Patch from Andrey Oktyabrski.
2050 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2051 Patch from Simon Arlott.
2053 PP/09 New lookups functionality failed to compile on old gcc which rejects
2054 extern declarations in function scope.
2055 Patch from Oliver Fleischmann
2057 PP/10 Use sig_atomic_t for flags set from signal handlers.
2058 Check getgroups() return and improve debugging.
2059 Fixed developed for diagnosis in bug 927 (which turned out to be
2062 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2063 Patch from Mark Zealey.
2065 PP/12 Bugzilla 1056: Improved spamd server selection.
2066 Patch from Mark Zealey.
2068 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2069 Based on patch from Heiko Schlittermann.
2071 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2072 Patch from Uwe Doering, sign-off by Michael Haardt.
2074 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2075 variable declaration deep within a block. Bug and patch from
2078 PP/15 lookups-Makefile IRIX compatibility coercion.
2080 PP/16 Make DISABLE_DKIM build knob functional.
2082 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2083 Patch by Simon Arlott
2085 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2086 variable argument macros. Our copy now differs from upstream.
2092 TF/01 Failure to get a lock on a hints database can have serious
2093 consequences so log it to the panic log.
2095 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2096 controlled using the smtp_confirmation log selector.
2098 TF/03 Include the error message when we fail to unlink a spool file.
2100 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2101 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2102 for maintaining out-of-tree patches for some time.
2104 PP/01 Bugzilla 139: Documentation and portability issues.
2105 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2106 Handle per-OS dynamic-module compilation flags.
2108 PP/02 Let /dev/null have normal permissions.
2109 The 4.73 fixes were a little too stringent and complained about the
2110 permissions on /dev/null. Exempt it from some checks.
2111 Reported by Andreas M. Kirchwitz.
2113 PP/03 Report version information for many libraries, including
2114 Exim version information for dynamically loaded libraries. Created
2115 version.h, now support a version extension string for distributors
2116 who patch heavily. Dynamic module ABI change.
2118 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2119 privilege escalation vulnerability whereby the Exim run-time user
2120 can cause root to append content of the attacker's choosing to
2123 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2126 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2127 If dropping privileges for untrusted macros, we disabled normal logging
2128 on the basis that it would fail; for the Exim run-time user, this is not
2129 the case, and it resulted in successful deliveries going unlogged.
2130 Fixed. Reported by Andreas Metzler.
2136 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2137 only prepend for the Resent-* case. Fixes regression introduced in
2138 Exim 4.70 by NM/22 for Bugzilla 607.
2140 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2141 increasing numbers of administrators be bitten by this.
2143 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2145 PP/03 Bugzilla 994: added openssl_options main configuration option.
2147 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2149 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2151 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2153 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2154 without a peer certificate, leading to a segfault because of an
2155 assumption that peers always have certificates. Be a little more
2156 paranoid. Problem reported by Martin Tscholak.
2158 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2159 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2160 NB: ClamAV planning to remove STREAM in "middle of 2010".
2161 CL also introduces -bmalware, various -d+acl logging additions and
2162 more caution in buffer sizes.
2164 PP/09 Implemented reverse_ip expansion operator.
2166 PP/10 Bugzilla 937: provide a "debug" ACL control.
2168 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2170 PP/12 Bugzilla 973: Implement --version.
2172 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2174 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2176 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2178 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2179 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2180 ignore trailing whitespace.
2182 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2184 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2187 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2188 Notification from Dr Andrew Aitchison.
2190 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2191 ExtendedDetectionInfo response format.
2192 Notification from John Horne.
2194 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2197 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2198 XSL and documented dependency on system catalogs, with examples of how
2201 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2204 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2205 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2206 configuration file which is writeable by the Exim user or group.
2208 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2209 of configuration files to cover files specified with the -C option if
2210 they are going to be used with root privileges, not just the default
2213 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2214 option (effectively making it always true).
2216 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2217 files to be used while preserving root privileges.
2219 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2220 that rogue child processes cannot use them.
2222 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2223 run-time user, instead of root.
2225 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2226 Exim run-time user without dropping privileges.
2228 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2229 result string, instead of calling string_vformat() twice with the same
2232 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2233 for other users. Others should always drop root privileges if they use
2234 -C on the command line, even for a whitelisted configure file.
2236 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2238 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2244 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2245 $data_path, and $header_path variables; fixed documentation bugs and
2248 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2249 exipick to access non-standard spools, including the "frozen" queue
2252 NM/01 Bugzilla 965: Support mysql stored procedures.
2253 Patch from Alain Williams
2255 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2257 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2258 Patch from Andreas Metzler
2260 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2261 Patch from Kirill Miazine
2263 NM/05 Bugzilla 671: Added umask to procmail example.
2265 JJ/03 installed exipick 20100323.0, fixing doc bug
2267 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2268 directory. Notification and patch from Dan Rosenberg.
2270 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2272 TK/02 Improve log output when DKIM signing operation fails.
2274 MH/01 Treat the transport option dkim_domain as a colon separated
2275 list, not as a single string, and sign the message with each element,
2276 omitting multiple occurences of the same signer.
2278 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2279 Bugzilla 985, 986. Patch by Simon Arlott
2281 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2282 Patch by Simon Arlott
2284 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2285 MBX locking. Notification from Dan Rosenberg.
2291 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2293 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2295 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2297 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2299 NM/04 Bugzilla 915: Flag broken perl installation during build.
2305 TK/01 Added patch by Johannes Berg that expands the main option
2306 "spamd_address" if it starts with a dollar sign.
2308 TK/02 Write list of recipients to X-Envelope-Sender header when building
2309 the mbox-format spool file for content scanning (suggested by Jakob
2312 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2313 (http://www.dcc-servers.net/) support via dccifd. Activated by
2314 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2316 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2317 by Mark Daniel Reidel <mr@df.eu>.
2319 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2320 When building exim an external PCRE library is now needed -
2321 PCRE is a system library on the majority of modern systems.
2322 See entry on PCRE_LIBS in EDITME file.
2324 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2325 conversation. Added nologin parameter to request.
2326 Patch contributed by Kirill Miazine.
2328 TF/01 Do not log submission mode rewrites if they do not change the address.
2330 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2332 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2333 log files in place. Contributed by Roberto Lima.
2335 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2337 TF/03 Bugzilla 615: When checking the local_parts router precondition
2338 after a local_part_suffix or local_part_prefix option, Exim now
2339 does not use the address's named list lookup cache, since this
2340 contains cached lookups for the whole local part.
2342 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2343 Robert Millan. Documentation is in experimental-spec.txt.
2345 TF/04 Bugzilla 668: Fix parallel build (make -j).
2347 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2349 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2350 Patch provided by Jan Srzednicki.
2352 TF/05 Leading white space used to be stripped from $spam_report which
2353 wrecked the formatting. Now it is preserved.
2355 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2356 that they are available at delivery time.
2358 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2360 TF/08 TLS error reporting now respects the incoming_interface and
2361 incoming_port log selectors.
2363 TF/09 Produce a more useful error message if an SMTP transport's hosts
2364 setting expands to an empty string.
2366 NM/06 Bugzilla 744: EXPN did not work under TLS.
2367 Patch provided by Phil Pennock.
2369 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2370 Patch provided by Richard Godbee.
2372 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2373 acl_smtp_notquit, added index entry.
2375 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2376 Patch provided by Eugene Bujak.
2378 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2379 accept(). Patch provided by Maxim Dounin.
2381 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2382 Patch provided by Phil Pennock.
2384 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2386 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2387 Patch provided by Brad "anomie" Jorsch.
2389 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2390 Patch provided by Dean Brooks.
2392 TK/05 Add native DKIM support (does not depend on external libraries).
2394 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2395 Patch provided by Graeme Fowler.
2397 NM/16 Bugzilla 851: Documentation example syntax fix.
2399 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2401 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2404 NM/19 Bugzilla 745: TLS version reporting.
2405 Patch provided by Phil Pennock.
2407 NM/20 Bugzilla 167: bool: condition support.
2408 Patch provided by Phil Pennock.
2410 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2411 clients. Patch provided by Phil Pennock.
2413 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2414 Patch provided by Brad "anomie" Jorsch.
2416 NM/23 Bugzilla 687: Fix misparses in eximstats.
2417 Patch provided by Heiko Schlittermann.
2419 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2420 Patch provided by Heiko Schlittermann.
2422 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2423 plus update to original patch.
2425 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2427 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2428 Patch provided by David Brownlee.
2430 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2432 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2434 NM/30 Bugzilla 888: TLS documentation bugfixes.
2436 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2438 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2439 Unlike the original bugzilla I have changed all shell scripts in src tree.
2441 NM/33 Bugzilla 898: Transport filter timeout fix.
2442 Patch by Todd Rinaldo.
2444 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2445 Patch by Serge Demonchaux.
2447 NM/35 Bugzilla 39: Base64 decode bug fixes.
2448 Patch by Jakob Hirsch.
2450 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2452 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2454 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2456 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2462 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2463 ALT-N's libdkim that I have put here:
2464 http://duncanthrax.net/exim-experimental/
2466 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2467 were called 'true' and it seems that C99 defines that as a reserved
2468 keyword to be used with 'bool' variable types. That means you could
2469 not include C99-style headers which use bools without triggering
2470 build errors in sieve.c.
2472 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2473 as mailq or other aliases. Changed the --help handling significantly
2474 to do whats expected. exim_usage() emits usage/help information.
2476 SC/01 Added the -bylocaldomain option to eximstats.
2478 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2480 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2482 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2488 PH/01 Another patch from the Sieve maintainer.
2490 PH/02 When an IPv6 address is converted to a string for single-key lookup
2491 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2492 dots are used instead of colons so that keys in lsearch files need not
2493 contain colons. This was done some time before quoting was made available
2494 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2495 (notated using the quote facility) so as to distinguish them from IPv4
2496 keys. This meant that lookups for IP addresses in host lists did not work
2497 for iplsearch lookups.
2499 This has been fixed by arranging for IPv6 addresses to be expressed with
2500 colons if the lookup type is iplsearch. This is not incompatible, because
2501 previously such lookups could never work.
2503 The situation is now rather anomalous, since one *can* have colons in
2504 ordinary lsearch keys. However, making the change in all cases is
2505 incompatible and would probably break a number of configurations.
2507 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2510 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2511 conversion specification without a maximum field width, thereby enabling
2512 a rogue spamd server to cause a buffer overflow. While nobody in their
2513 right mind would setup Exim to query an untrusted spamd server, an
2514 attacker that gains access to a server running spamd could potentially
2515 exploit this vulnerability to run arbitrary code as the Exim user.
2517 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2518 $primary_hostname instead of what libspf2 thinks the hosts name is.
2520 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2521 a directory entry by the name of the lookup key. Previously, if a
2522 symlink pointed to a non-existing file or a file in a directory that
2523 Exim lacked permissions to read, a lookup for a key matching that
2524 symlink would fail. Now it is enough that a matching directory entry
2525 exists, symlink or not. (Bugzilla 503.)
2527 PH/03 The body_linecount and body_zerocount variables are now exported in the
2530 PH/04 Added the $dnslist_matched variable.
2532 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2533 This means they are set thereafter only if the connection becomes
2536 PH/06 Added the client_condition to authenticators so that some can be skipped
2537 by clients under certain conditions.
2539 PH/07 The error message for a badly-placed control=no_multiline_responses left
2540 "_responses" off the end of the name.
2542 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2544 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2545 (without spaces) instead of just copying the configuration text.
2547 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2549 PH/11 Added $max_received_linelength.
2551 PH/12 Added +ignore_defer and +include_defer to host lists.
2553 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2554 way in which PCRE > 7.0 is built.
2556 PH/14 Implemented queue_only_load_latch.
2558 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2559 MAIL command. The effect was to mangle the value on 64-bit systems.
2561 PH/16 Another patch from the Sieve maintainer.
2563 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2565 PH/18 If a system quota error occurred while trying to create the file for
2566 a maildir delivery, the message "Mailbox is full" was not appended to the
2567 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2568 only to a quota excession during the actual writing of the file.
2570 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2571 characters?) which causes problems in log lines. The DN values are now
2572 passed through string_printing() before being added to log lines.
2574 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2575 and InterBase are left for another time.)
2577 PH/21 Added message_body_newlines option.
2579 PH/22 Guard against possible overflow in moan_check_errorcopy().
2581 PH/23 POSIX allows open() to be a macro; guard against that.
2583 PH/24 If the recipient of an error message contained an @ in the local part
2584 (suitably quoted, of course), incorrect values were put in $domain and
2585 $local_part during the evaluation of errors_copy.
2591 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2592 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2595 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2596 issue a MAIL command.
2598 PH/02 In an ACL statement such as
2600 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2602 if a client was not listed at all, or was listed with a value other than
2603 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2604 the condition was not true (as it should be), so access was not denied.
2605 The bug was that the ! inversion was incorrectly passed on to the second
2606 item. This has been fixed.
2608 PH/03 Added additional dnslists conditions == and =& which are different from
2609 = and & when the dns lookup returns more than one IP address.
2611 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2612 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2614 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2615 FSYNC, which compiles an option called disable_fsync that allows for
2616 bypassing fsync(). The documentation is heavily laced with warnings.
2618 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2620 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2621 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2622 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2623 including adding "make clean"; (3) Added -fPIC when compiling the test
2624 dynamically loaded module, to get rid of a warning.
2626 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2627 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2628 = 0s. The bug is otherwise harmless.
2630 PH/07 There was a bug in the dovecot authenticator such that the value of
2631 $auth1 could be overwritten, and so not correctly preserved, after a
2632 successful authentication. This usually meant that the value preserved by
2633 the server_setid option was incorrect.
2635 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2637 PH/09 Installed PCRE release 7.0.
2639 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2640 run for batched SMTP input. It is now run at the start of every message
2641 in the batch. While fixing this I discovered that the process information
2642 (output by running exiwhat) was not always getting set for -bs and -bS
2643 input. This is fixed, and it now also says "batched" for BSMTP.
2645 PH/11 Added control=no_pipelining.
2647 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2648 patch, slightly modified), and move the expansion of helo_data till after
2649 the connection is made in the smtp transport (so it can use these
2652 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2654 PH/14 Added log_selector = +pid.
2656 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2658 PH/16 Add ${if forany and ${if forall.
2660 PH/17 Added dsn_from option to vary the From: line in DSNs.
2662 PH/18 Flush SMTP output before performing a callout, unless control =
2663 no_callout_flush is set.
2665 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2666 was true (the default) a successful delivery failed to delete the retry
2667 item, thus causing premature timeout of the address. The bug is now
2670 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2672 PH/21 Long custom messages for fakedefer and fakereject are now split up
2673 into multiline responses in the same way that messages for "deny" and
2674 other ACL rejections are.
2676 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2677 with slight modification.
2679 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2680 draft, changing the syntax and factoring some duplicate code".
2682 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2683 for deliveries of the second and subsequent messages over the same SMTP
2686 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2687 ${reduce, with only minor "tidies".
2689 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2691 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2692 expansion side effects.
2694 PH/27 When a message times out after an over-quota error from an Exim-imposed
2695 quota, the bounce message says "mailbox is full". This message was not
2696 being given when it was a system quota that was exceeded. It now should
2699 MH/03 Made $recipients available in local_scan(). local_scan() already has
2700 better access to the recipient list through recipients_list[], but
2701 $recipients can be useful in postmaster-provided expansion strings.
2703 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2704 in the case of a MAIL command with additional options following the
2705 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2706 were accidentally chopped off.
2708 PH/29 SMTP synchronization checks are implemented when a command is read -
2709 there is a check that no more input is waiting when there shouldn't be
2710 any. However, for some commands, a delay in an ACL can mean that it is
2711 some time before the response is written. In this time, more input might
2712 arrive, invalidly. So now there are extra checks after an ACL has run for
2713 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2714 pipelining has not been advertised.
2716 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2718 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2719 returned in the SMTP response when smtp_return_error_details was false.
2720 This has been fixed.
2722 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2723 instead of the C I/O that was originally supplied, because problems were
2724 reported on Solaris.
2726 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2727 Exim which did not show up earlier: it was assuming that a call to
2728 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2729 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2730 was a macro that became an assignment, so it seemed to work. This has
2731 changed to a proper function call with a void return, hence the compile
2732 error. Exim's code has been fixed.
2734 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2737 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2739 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2741 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2742 because it turns out to be too big or there is a timeout) there is no
2743 "Completed" line in the log. When some messages of this type were
2744 selected by exigrep, they were listed as "not completed". Others were
2745 picked up by some special patterns. I have improved the selection
2746 criteria to be more general.
2748 PH/38 The host_find_failed option in the manualroute router can now be set
2749 to "ignore", to completely ignore a host whose IP address cannot be
2750 found. If all hosts are ignored, the behaviour is controlled by the new
2751 host_all_ignored option.
2753 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2754 homing or because of multiple MX records with /mx) generated more than
2755 one IP address, and the following item turned out to be the local host,
2756 all the secondary addresses of the first item were incorrectly removed
2757 from the list, along with the local host and any following hosts (which
2758 is what is supposed to happen).
2760 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2761 whoever called Exim into the -H file. In the case of the daemon it was
2762 behaving confusingly. When first started, it used values for whoever
2763 started the daemon, but after a SIGHUP it used the Exim user (because it
2764 calls itself on a restart). I have changed the code so that it now always
2767 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2768 message are rejected with the same error (e.g. no authentication or bad
2769 sender address), and a DATA command is nevertheless sent (as can happen
2770 with PIPELINING or a stupid MUA), the error message that was given to the
2771 RCPT commands is included in the rejection of the DATA command. This is
2772 intended to be helpful for MUAs that show only the final error to their
2775 PH/42 Another patch from the Sieve maintainer.
2777 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2778 Eximstats - Fixed some broken HTML links and added missing column headers
2780 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2781 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2783 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2785 PH/43 Yet another patch from the Sieve maintainer.
2787 PH/44 I found a way to check for a TCP/IP connection going away before sending
2788 the response to the final '.' that terminates a message, but only in the
2789 case where the client has not sent further data following the '.'
2790 (unfortunately, this is allowed). However, in many cases there won't be
2791 any further data because there won't be any more messages to send. A call
2792 to select() can be used: if it shows that the input is "ready", there is
2793 either input waiting, or the socket has been closed. An attempt to read
2794 the next input character can distinguish the two cases. Previously, Exim
2795 would have sent an OK response which the client would never have see.
2796 This could lead to message repetition. This fix should cure that, at
2797 least in a lot of common cases.
2799 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2800 advertised in response to EHLO.
2806 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2807 fixed by 4.65/MH/01 (is this a record?) are fixed:
2809 (i) An empty string was always treated as zero by the numeric comparison
2810 operators. This behaviour has been restored.
2812 (ii) It is documented that the numeric comparison operators always treat
2813 their arguments as decimal numbers. This was broken in that numbers
2814 starting with 0 were being interpreted as octal.
2816 While fixing these problems I realized that there was another issue that
2817 hadn't been noticed. Values of message_size_limit (both the global option
2818 and the transport option) were treated as octal if they started with 0.
2819 The documentation was vague. These values are now always treated as
2820 decimal, and I will make that clear in the documentation.
2826 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2827 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2830 MH/01 Don't check that the operands of numeric comparison operators are
2831 integers when their expansion is in "skipping" mode (fixes bug
2832 introduced by 4.64-PH/07).
2834 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2835 child addresses, Exim now panics and dies. Previously, because the count
2836 is held in a short int, deliveries were likely to be lost. As such a
2837 large number of recipients for a single message is ridiculous
2838 (performance will be very, very poor), I have chosen to impose a limit
2839 rather than extend the field.
2845 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2846 leftover -K file (the existence of which was triggered by #402).
2847 While we were at it, introduced process PID as part of the -K
2848 filename. This should rule out race conditions when creating
2851 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2852 processing considerably. Previous code took too long for large mails,
2853 triggering a timeout which in turn triggers #401.
2855 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2856 in the DK code in transports.c. sendfile() is not really portable,
2857 hence the _LINUX specificness.
2859 TF/01 In the add_headers option to the mail command in an Exim filter,
2860 there was a bug that Exim would claim a syntax error in any
2861 header after the first one which had an odd number of characters
2864 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2865 callout verification, Exim cached a "reject" for the entire domain. This
2866 is correct for most verifications, but it is not correct for a recipient
2867 verification with use_sender or use_postmaster set, because in that case
2868 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2869 case of MAIL FROM:<> rejection from other early rejections (e.g.
2870 rejection of HELO). When verifying a recipient using a non-null MAIL
2871 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2872 Whatever the result of the callout, the value of the domain cache is
2873 left unchanged (for any other kind of callout, getting as far as trying
2874 RCPT means that the domain itself is ok).
2876 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2879 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2880 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2881 session, the daemon ignores ECONNECT errors and logs others; it now
2882 ignores EPIPE as well.
2884 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2885 (quoted-printable decoding).
2887 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2888 later the small subsequent patch to fix an introduced bug.
2890 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2892 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2894 PH/08 An error is now given if message_size_limit is specified negative.
2896 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2897 to be given (somewhat) arbitrary names.
2899 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2902 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2903 miscellaneous code fixes
2905 PH/10 Added the log_reject_target ACL modifier to specify where to log
2908 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2909 hostname. This is wrong, because it relates to the incoming message (and
2910 probably the interface on which it is arriving) and not to the outgoing
2911 callout (which could be using a different interface). This has been
2912 changed to use the value of the helo_data option from the smtp transport
2913 instead - this is what is used when a message is actually being sent. If
2914 there is no remote transport (possible with a router that sets up host
2915 addresses), $smtp_active_hostname is used.
2917 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2918 tweaks were necessary in order to get it to work (see also 21 below):
2919 (a) The code assumed that strncpy() returns a negative number on buffer
2920 overflow, which isn't the case. Replaced with Exim's string_format()
2922 (b) There were several signed/unsigned issues. I just did the minimum
2923 hacking in of casts. There is scope for a larger refactoring.
2924 (c) The code used strcasecmp() which is not a standard C function.
2925 Replaced with Exim's strcmpic() function.
2926 (d) The code set only $1; it now sets $auth1 as well.
2927 (e) A simple test gave the error "authentication client didn't specify
2928 service in request". It would seem that Dovecot has changed its
2929 interface. Fortunately there's a specification; I followed it and
2930 changed what the client sends and it appears to be working now.
2932 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2935 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2936 address A is aliased to B and C, where B exists and C does not. Without
2937 -v the output is "A verified" because verification stops after a
2938 successful redirection if more than one address is generated. However,
2939 with -v the child addresses are also verified. Exim was outputting "A
2940 failed to verify" and then showing the successful verification for C,
2941 with its parentage. It now outputs "B failed to verify", showing B's
2942 parentage before showing the successful verification of C.
2944 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2945 look up a TXT record in a specific list after matching in a combined
2948 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2949 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2950 they consult the DNS. I had assumed they would set it the way they
2951 wanted; and indeed my experiments on Linux seem to show that in some
2952 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2953 To be on the safe side, however, I have now made the interface to
2954 host_find_byname() similar to host_find_bydns(), with an argument
2955 containing the DNS resolver options. The host_find_byname() function now
2956 sets these options at its start, just as host_find_bydns() does. The smtp
2957 transport options dns_qualify_single and dns_search_parents are passed to
2958 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2959 of host_find_byname() use the default settings of RES_DEFNAMES
2960 (qualify_single) but not RES_DNSRCH (search_parents).
2962 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2963 spool_read_header() do less string testing, by means of a preliminary
2964 switch on the second character of optional "-foo" lines. (This is
2965 overdue, caused by the large number of possibilities that now exist.
2966 Originally there were few.) While I was there, I also converted the
2967 str(n)cmp tests so they don't re-test the leading "-" and the first
2968 character, in the hope this might squeeze out yet more improvement.
2970 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2971 flag allowing group syntax was set by the header_syntax check but not
2972 turned off, possible causing trouble later; (2) The flag was not being
2973 set at all for the header_verify test, causing "group"-style headers to
2974 be rejected. I have now set it in this case, and also caused header_
2975 verify to ignore an empty address taken from a group. While doing this, I
2976 came across some other cases where the code for allowing group syntax
2977 while scanning a header line wasn't quite right (mostly, not resetting
2978 the flag correctly in the right place). These bugs could have caused
2979 trouble for malformed header lines. I hope it is now all correct.
2981 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2982 with the "reply" argument non-NULL. The code, however (which originally
2983 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2984 but it didn't always do it. This confused somebody who was copying the
2985 code for some other use. I have removed all the tests.
2987 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2988 feature that was used to support insecure browsers during the U.S. crypto
2989 embargo. It requires special client support, and Exim is probably the
2990 only MTA that supported it -- and would never use it because real RSA is
2991 always available. This code has been removed, because it had the bad
2992 effect of slowing Exim down by computing (never used) parameters for the
2993 RSA_EXPORT functionality.
2995 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2996 authenticator to fail if there's a tab character in the incoming data
2997 (there should never be unless someone is messing about, as it's supposed
2998 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2999 if the connection is using TLS or if the remote IP is the same as the
3000 local IP, and the "valid-client-cert option" if a client certificate has
3003 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3004 authenticators. This can be used for authorization after authentication
3005 succeeds. (In the case of plaintext, it servers for both authentication
3008 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3009 if any retry times were supplied.
3011 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3012 connection, where there is no client IP address to check. In this
3013 situation, the verify now always succeeds.
3015 PH/25 Applied John Jetmore's -Mset patch.
3017 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3019 PH/27 In a string expansion for a processed (not raw) header when multiple
3020 headers of the same name were present, leading whitespace was being
3021 removed from all of them, but trailing whitespace was being removed only
3022 from the last one. Now trailing whitespace is removed from each header
3023 before concatenation. Completely empty headers in a concatenation (as
3024 before) are ignored.
3026 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3027 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3029 PH/29 [Removed. This was a change that I later backed out, and forgot to
3030 correct the ChangeLog entry (that I had efficiently created) before
3031 committing the later change.]
3033 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3034 address errors (4xx response to RCPT) over the same connection as other
3035 messages routed to the same hosts. Such deliveries are always "forced",
3036 so retry times are not inspected. This resulted in far too many retries
3037 for the affected addresses. The effect occurred only when there were more
3038 hosts than the hosts_max_try setting in the smtp transport when it had
3039 the 4xx errors. Those hosts that it had tried were not added to the list
3040 of hosts for which the message was waiting, so if all were tried, there
3041 was no problem. Two fixes have been applied:
3043 (i) If there are any address or message errors in an SMTP delivery, none
3044 of the hosts (tried or untried) are now added to the list of hosts
3045 for which the message is waiting, so the message should not be a
3046 candidate for sending over the same connection that was used for a
3047 successful delivery of some other message. This seems entirely
3048 reasonable: after all the message is NOT "waiting for some host".
3049 This is so "obvious" that I'm not sure why it wasn't done
3050 previously. Hope I haven't missed anything, but it can't do any
3051 harm, as the worst effect is to miss an optimization.
3053 (ii) If, despite (i), such a delivery is accidentally attempted, the
3054 routing retry time is respected, so at least it doesn't keep
3055 hammering the server.
3057 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3058 in ${readsocket because some servers need this prod.
3060 PH/32 Added some extra debug output when updating a wait-xxx database.
3062 PH/33 The hint "could be header name not terminated by colon", which has been
3063 given for certain expansion errors for a long time, was not being given
3064 for the ${if def:h_colon_omitted{... case.
3066 PH/34 The spec says: "With one important exception, whenever a domain list is
3067 being scanned, $domain contains the subject domain." There was at least
3068 one case where this was not true.
3070 PH/35 The error "getsockname() failed: connection reset by peer" was being
3071 written to the panic log as well as the main log, but it isn't really
3072 panic-worthy as it just means the connection died rather early on. I have
3073 removed the panic log writing for the ECONNRESET error when getsockname()
3076 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3077 runs only) independently of the message's sender address. This meant
3078 that, if the 4xx error was in fact related to the sender, a different
3079 message to the same recipient with a different sender could confuse
3080 things. In particular, this can happen when sending to a greylisting
3081 server, but other circumstances could also provoke similar problems.
3082 I have changed the default so that the retry time for these errors is now
3083 based a combination of the sender and recipient addresses. This change
3084 can be overridden by setting address_retry_include_sender=false in the
3087 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3088 remote server are returned as part of bounce messages. This was not
3089 happening for LMTP over a pipe (the lmtp transport), but now it is the
3090 same for both kinds of LMTP.
3092 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3093 in header lines that were in fact CNAMEs. This is no longer the case.
3095 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3096 and queue runs started by the daemon processed all messages. This has
3097 been fixed so that -R and -S can now usefully be given with -q<time>.
3099 PH/40 Import PCRE release 6.7 (fixes some bugs).
3101 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3103 PH/42 Give an error if -q is specified more than once.
3105 PH/43 Renamed the variables $interface_address and $interface_port as
3106 $received_ip_address and $received_port, to make it clear that these
3107 values apply to message reception, and not to the outgoing interface when
3108 a message is delivered. (The old names remain recognized, of course.)
3110 PH/44 There was no timeout on the connect() call when using a Unix domain
3111 socket in the ${readsocket expansion. There now is.
3113 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3114 be meaningful with "accept".
3116 SC/01 Eximstats V1.43
3117 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3119 SC/02 Eximstats V1.44
3120 Use a glob alias rather than an array ref in the generated
3121 parser. This improves both readability and performance.
3123 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3124 Collect SpamAssassin and rejection statistics.
3125 Don't display local sender or destination tables unless
3126 there is data to show.
3127 Added average volumes into the top table text output.
3129 SC/04 Eximstats V1.46
3130 Collect data on the number of addresses (recipients)
3131 as well as the number of messages.
3133 SC/05 Eximstats V1.47
3134 Added 'Message too big' to the list of mail rejection
3135 reasons (thanks to Marco Gaiarin).
3137 SC/06 Eximstats V1.48
3138 Mainlog lines which have GMT offsets and are too short to
3139 have a flag are now skipped.
3141 SC/07 Eximstats V1.49 (Alain Williams)
3142 Added the -emptyok flag.
3144 SC/08 Eximstats V1.50
3145 Fixes for obtaining the IP address from reject messages.
3147 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3148 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3149 whitespace changes from 4.64-PH/27
3151 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3154 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3155 are found, allow negative numbers in numeric criteria)
3157 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3159 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3160 to match changes made in 4.64-PH/43
3162 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3164 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3165 "domain" is actually an IP address, and force a failure. This locks out
3166 those revolvers/nameservers that support "A-for-A" lookups, in
3167 contravention of the specifications.
3169 PH/48 When a host name was looked up from an IP address, and the subsequent
3170 forward lookup of the name timed out, the host name was left in
3171 $sender_host_name, contrary to the specification.
3173 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3174 restricted to single-key lookups, Exim was not diagnosing an error if
3175 * or *@ was used with a query-style lookup.
3177 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3179 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3180 long ago, but noone interested enough thought of it. Let's just say that
3181 the "1.1" means that there are some new functions that weren't there at
3182 some point in the past.
3184 PH/51 Error processing for expansion failure of helo_data from an smtp
3185 transport during callout processing was broken.
3187 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3188 tested/used via the -bh/-bhc/-bs options.
3190 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3191 bug, fixed in subsequent PCRE releases).
3193 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3194 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3196 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3202 SC/01 Use a glob alias rather than an array ref in eximstats generated
3203 parser. This improves both readability and performance.
3205 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3206 Don't display local sender or destination tables in eximstats unless
3207 there is data to show.
3208 Added average volumes into the eximstats top table text output.
3210 SC/03 Collect data on the number of addresses (recipients) as well
3211 as the number of messages in eximstats.
3213 TF/01 Correct an error in the documentation for the redirect router. Exim
3214 does (usually) call initgroups() when daemonizing.
3216 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3217 with consistent privilege compared to when running as a daemon.
3219 TF/03 Note in the spec that $authenticated_id is not set for local
3220 submissions from trusted users.
3222 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3223 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3225 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3226 by adding some example configuration directives to the default
3227 configuration file. A little bit of work is required to uncomment the
3228 directives and define how usernames and passwords are checked, but
3229 there is now a framework to start from.
3231 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3232 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3233 without this. I don't know how relevant this is to other LDAP libraries.
3235 PH/02 Add the verb name to the "unknown ACL verb" error.
3237 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3239 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3241 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3242 directory not expanded when it should be if an expanded home directory
3243 was set for the address (which is overridden by the transport).
3245 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3248 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3249 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3250 because it is too late at that time, and has no effect.
3252 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3253 security issue with \' (bugzilla #107). I could not use the
3254 PQescapeStringConn() function, because it needs a PGconn value as one of
3257 PH/08 When testing addresses using -bt, indicate those final addresses that
3258 are duplicates that would not cause an additional delivery. At least one
3259 person was confused, thinking that -bt output corresponded to deliveries.
3260 (Suppressing duplicates isn't a good idea as you lose the information
3261 about possibly different redirections that led to the duplicates.)
3263 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3264 systems where poll() doesn't work, in particular OS X.
3266 PH/10 Added more information to debugging output for retry time not reached.
3268 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3269 operations in malware.c.
3271 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3274 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3275 syslog_duplication set false, log lines that would normally be written
3276 both the the main log and to the reject log were not written to syslog at
3279 PH/14 In the default configuration, change the use of "message" in ACL warn
3280 statements to "add_header".
3282 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3283 not followed by a command (e.g. "seen endif").
3285 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3286 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3289 PH/17 Added extra conditions to the default value of delay_warning_condition
3293 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3294 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3295 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3298 The Auto-Submitted: and various List- headers are standardised, whereas I
3299 don't think Precedence: ever was.
3301 PH/18 Refactored debugging code in route_finduser() to show more information,
3302 in particular, the error code if getpwnam() issues one.
3304 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3305 This is apparently needed in addition to the PH/07 change above to avoid
3306 any possible encoding problems.
3308 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3309 but not after initializing Perl.
3311 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3312 output them only if debugging. By default they are written stderr,
3313 apparently, which is not desirable.
3315 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3318 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3321 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3323 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3324 authenticated or an ident call has been made. Suppress the default
3325 values for $authenticated_id and $authenticated_sender (but permit -oMai
3326 and -oMas) when testing with -bh.
3328 PH/24 Re-jigged the order of the tests in the default configuration so that the
3329 tests for valid domains and recipients precede the DNS black list and CSA
3330 tests, on the grounds that those ones are more expensive.
3332 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3333 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3334 This bug exists in every version of Exim that I still have, right back to
3337 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3338 However, an attempt to turn on case-sensitivity in a regex key by
3339 including (?-i) didn't work because the subject string was already
3340 lowercased, and the effects were non-intuitive. It turns out that a
3341 one-line patch can be used to allow (?-i) to work as expected.
3347 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3348 other effects) broke the use of negated acl sub-conditions.
3350 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3353 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3354 "Deny" causes Exim to reject the incoming connection with a 554 error.
3355 Unfortunately, if there is a major crisis, such as a disk failure,
3356 tcp-wrappers gives "deny", whereas what one would like would be some
3357 kind of temporary error. A kludge has been added to help with this.
3358 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3359 554 error is used if errno is still zero or contains ENOENT (which occurs
3360 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3363 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3365 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3366 errors. Otherwise a message that provokes a temporary error (when other
3367 messages do not) can cause a whole host to time out.
3369 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3370 addresses were routed directly to files or pipes from a redirect router.
3371 File deliveries just didn't batch; pipe deliveries might have suffered
3374 PH/06 A failure to get a lock for a hints database would erroneously always say
3375 "Failed to get write lock", even when it was really a read lock.
3377 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3378 of 0600. This has been changed to use the value of the lockfile_mode
3379 option (which defaults to 0600).
3381 PH/08 Applied small patch from the Sieve maintainer.
3383 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3384 folder from quota calculations, a direct delivery into this folder messed
3385 up the contents of the maildirsize file. This was because the regex was
3386 used only to exclude .Trash (or whatever) when the size of the mailbox
3387 was calculated. There was no check that a delivery was happening into an
3388 excluded directory. This bug has been fixed by ignoring all quota
3389 processing for deliveries into excluded directories.
3391 PH/10 Added the maildirfolder_create_regex option to appendfile.
3397 PH/01 The code for finding all the local interface addresses on a FreeBSD
3398 system running IPv6 was broken. This may well have applied to all BSD
3399 systems, as well as to others that have similar system calls. The broken
3400 code found IPv4 interfaces correctly, but gave incorrect values for the
3401 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3402 that it would not match correctly against @[] and not recognize the IPv6
3405 PH/02 The ipliteral router was not recognizing addresses of the form user@
3406 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3408 PH/03 Added disable_ipv6.
3410 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3411 decoded form, because it is most often used to construct To: headers
3412 lines in autoreplies, and the decoded form may well be syntactically
3413 invalid. However, $reply_address has leading white space removed, and all
3414 newlines turned into spaces so that the autoreply transport does not
3417 PH/05 If group was specified without a user on a router, and no group or user
3418 was specified on a transport, the group from the router was ignored.
3420 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3421 for visible compile-time settings that can be used to change these
3422 numbers, for those that want even more. Backwards compatibility with old
3423 spool files has been maintained. However, going back to a previous Exim
3424 release will lost any variables that are in spool files.
3426 PH/07 Two small changes when running in the test harness: increase delay when
3427 passing a TCP/IP connection to a new process, in case the original
3428 process has to generate a bounce, and remove special handling of
3429 127.0.0.2 (sic), which is no longer necessary.
3431 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3432 be the same on different OS.
3434 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3437 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3438 whether --show-vars was specified or not
3440 JJ/02 exipick: Added support for new ACL variable spool format introduced
3443 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3444 syntactically invalid From: or Reply-to: line, and a filter used this to
3445 generate an autoreply, and therefore failed to obtain an address for the
3446 autoreply, Exim could try to deliver to a non-existent relative file
3447 name, causing unrelated and misleading errors. What now happens is that
3448 it logs this as a hard delivery error, but does not attempt to create a
3451 PH/11 The exinext utility has a -C option for testing purposes, but although
3452 the given file was scanned by exinext itself; it wasn't being passed on
3453 when Exim was called.
3455 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3456 an end-of-file indication when reading a command response.
3458 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3459 compiled. In many other places in Exim, IPv6 addresses are always
3460 recognized, so I have changed this. It also means that IPv4 domain
3461 literals of the form [IPV4:n.n.n.n] are now always recognized.
3463 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3464 used if the router is not running as root, for example, when verifying at
3465 ACL time, or when using -bh. The debugging output from this situation was
3466 non-existent - all you got was a failure to exec. I have made two
3469 (a) Failures to set uid/gid, the current directory, or a process leader
3470 in a subprocess such as that created by queryprogram now generate
3471 suitable debugging output when -d is set.
3473 (b) The queryprogram router detects when it is not running as root,
3474 outputs suitable debugging information if -d is set, and then runs
3475 the subprocess without attempting to change uid/gid.
3477 PH/15 Minor change to Makefile for building test_host (undocumented testing
3480 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3481 additional section of a DNS packet that returns MX or SRV records.
3482 Instead, it always explicitly searches for A/AAAA records. This avoids
3483 major problems that occur when a DNS server includes only records of one
3484 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3485 fixed another bug: if SRV records were looked up and the corresponding
3486 address records were *not* found in the additional section, the port
3487 values from the SRV records were lost.
3489 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3490 using the correct key (the original address) when searching the retry
3491 rules in order to find which one to use for generating the retry hint.
3493 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3494 adding the default one. Similarly, if it contains a Reply-To: header, the
3495 errors_reply_to option, if set, is not used.
3497 PH/19 When calculating a retry time, Exim used to measure the "time since
3498 failure" by looking at the "first failed" field in the retry record. Now
3499 it does not use this if it is later than than the arrival time of the
3500 message. Instead it uses the arrival time. This makes for better
3501 behaviour in cases where some deliveries succeed, thus re-setting the
3502 "first failed" field. An example is a quota failure for a huge message
3503 when small messages continue to be delivered. Without this change, the
3504 "time since failure" will always be short, possible causing more frequent
3505 delivery attempts for the huge message than are intended.
3506 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3508 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3509 $1, $2, $3) because the numerical variables can be reset during some
3510 expansion items (e.g. "match"), thereby losing the authentication data.
3512 PH/21 Make -bV show the size of off_t variables so that the test suite can
3513 decide whether to run tests for quotas > 2G.
3515 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3516 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3517 filecount value is greater than 2G or if a quota value is greater than 2G
3518 on a system where the size of off_t is not greater than 4, a panic error
3521 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3522 never match. The debug and -bh output now contains an explicit error
3523 message indicating a malformed IPv4 address or mask.
3525 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3526 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3527 PH/23 above applies.
3529 PH/25 Do not write to syslog when running in the test harness. The only
3530 occasion when this arises is a failure to open the main or panic logs
3531 (for which there is an explicit test).
3533 PH/26 Added the /no_tell option to "control=freeze".
3535 PH/27 If a host name lookup failed very early in a connection, for example, if
3536 the IP address matched host_lookup and the reverse lookup yielded a name
3537 that did not have a forward lookup, an error message of the form "no IP
3538 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3539 could be logged. Now it outputs the IP address instead of "NULL".
3541 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3542 allows the sender and the authenticated sender to be set when
3543 submitting a message from within Exim. Since child_open_exim() is
3544 documented for local_scan(), the new function should be too.
3546 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3547 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3548 results in an empty string is now treated as unset.
3550 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3552 PH/31 Added sender_verify_fail logging option.
3554 PH/32 In November 2003, the code&
projects / exim.git / blob