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.
149 JH/32 For main options check_spool_space and check_inode_space, where the
150 platform supports 64b integers, support more than the previous 2^31 kB
151 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
152 the previous G, M, k.
154 JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
155 $authenticated_fail_id variable on authentication failure. Previously
158 JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
159 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
160 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
161 GNUTLS_SEC_PARAM_MEDIUM.
167 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
168 When redis_servers is set to a list of > 1 element, and the Redis servers
169 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
170 case of MOVED into a DEFER case instead, thus moving the query onto the
171 next server in the list. For a cluster of N elements, all N servers must
172 be defined in redis_servers.
174 GF/02 Catch and remove uninitialized value warning in exiqsumm
175 Check for existence of @ARGV before looking at $ARGV[0]
177 JH/01 Replace the store_release() internal interface with store_newblock(),
178 which internalises the check required to safely use the old one, plus
179 the allocate and data copy operations duplicated in both (!) of the
180 extant use locations.
182 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
183 modifier. This matches the restriction on the commandline.
185 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
186 Previously only the last row was returned.
188 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
189 we assumed that tags in the header were well-formed, and parsed the
190 element content after inspecting only the first char of the tag.
191 Assumptions at that stage could crash the receive process on malformed
194 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
195 While running the DKIM ACL we operate on the Permanent memory pool so that
196 variables created with "set" persist to the DATA ACL. Also (at any time)
197 DNS lookups that fail create cache records using the Permanent pool. But
198 expansions release any allocations made on the current pool - so a dnsdb
199 lookup expansion done in the DKIM ACL releases the memory used for the
200 DNS negative-cache, and bad things result. Solution is to switch to the
201 Main pool for expansions.
202 While we're in that code, add checks on the DNS cache during store_reset,
203 active in the testsuite.
204 Problem spotted, and debugging aided, by Wolfgang Breyha.
206 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
207 When none of the hosts presented to a transport match an already-open
208 connection, close it and proceed with the list. Previously we would
209 queue the message. Spotted by Lena with Yahoo, probably involving
212 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
213 Previously a spurious "250 OK id=" response was appended to the proper
216 JH/08 The "support for" informational output now, which built with Content
217 Scanning support, has a line for the malware scanner interfaces compiled
218 in. Interface can be individually included or not at build time.
220 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
221 by the template makefile "src/EDITME". The "STREAM" support for an older
222 ClamAV interface method is removed.
224 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
225 rows affected is given instead).
227 JH/11 The runtime Berkeley DB library version is now additionally output by
228 "exim -d -bV". Previously only the compile-time version was shown.
230 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
231 SMTP connection. Previously, when one had more receipients than the
232 first, an abortive onward connection was made. Move to full support for
233 multiple onward connections in sequence, handling cutthrough connection
234 for all multi-message initiating connections.
236 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
237 routers. Previously, a multi-recipient message would fail to match the
238 onward-connection opened for the first recipient, and cause its closure.
240 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
241 a timeout on read on a GnuTLS initiating connection, resulting in the
242 initiating connection being dropped. This mattered most when the callout
243 was marked defer_ok. Fix to keep the two timeout-detection methods
246 JH/15 Relax results from ACL control request to enable cutthrough, in
247 unsupported situations, from error to silently (except under debug)
248 ignoring. This covers use with PRDR, frozen messages, queue-only and
251 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
253 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
254 metadata, resulting in a crash in free().
256 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
257 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
258 Broken also in d185889f4, with init system revamp.
260 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
261 Previously we abruptly closed the connection after reading a malware-
262 found indication; now we go on to read the "scan ok" response line,
265 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
266 ACL. Previously, a crash would result.
268 JH/19 Speed up macro lookups during configuration file read, by skipping non-
269 macro text after a replacement (previously it was only once per line) and
270 by skipping builtin macros when searching for an uppercase lead character.
272 JH/20 DANE support moved from Experimental to mainline. The Makefile control
273 for the build is renamed.
275 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
276 was allocated for every new TLS startup, meaning one per message. Fix
277 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
279 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
280 reported the original. Fix to report (as far as possible) the ACL
281 result replacing the original.
283 JH/23 Fix memory leak during multi-message connections using STARTTLS under
284 OpenSSL. Certificate information is loaded for every new TLS startup,
285 and the resources needed to be freed.
287 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
289 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
292 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
293 DATA response info to the (existing) per-recipient response info for
294 the "C=" log element. It can have useful tracking info from the
295 destination system. Patch from Simon Arlott.
297 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
298 length value. Previously this would segfault.
300 HS/02 Support Avast multiline protoocol, this allows passing flags to
301 newer versions of the scanner.
303 JH/28 Ensure that variables possibly set during message acceptance are marked
304 dead before release of memory in the daemon loop. This stops complaints
305 about them when the debug_store option is enabled. Discovered specifically
306 for sender_rate_period, but applies to a whole set of variables.
307 Do the same for the queue-runner and queue-list loops, for variables set
308 from spool message files. Do the same for the SMTP per-message loop, for
309 certain variables indirectly set in ACL operations.
311 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
312 as a multi-recipient message from a mailinglist manager). The coding had
313 an arbitrary cutoff number of characters while checking for more input;
314 enforced by writing a NUL into the buffer. This corrupted long / fast
315 input. The problem was exposed more widely when more pipelineing of SMTP
316 responses was introduced, and one Exim system was feeding another.
317 The symptom is log complaints of SMTP syntax error (NUL chars) on the
318 receiving system, and refused recipients seen by the sending system
319 (propating to people being dropped from mailing lists).
320 Discovered and pinpointed by David Carter.
322 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
323 replaced by the ${authresults } expansion.
325 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
327 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
328 allows proper process termination in container environments.
330 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
331 Previously the "final dot" had a newline after it; ensure it is CR,LF.
333 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
334 and "err_perm", deprecated since 4.83 when the RFC-defined words
335 "temperror" and "permerror" were introduced.
337 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
338 transport-filters or DKIM-signing. The restriction was lost in the
339 consolidation of verify-callout and delivery SMTP handling.
340 Extend the restriction to also cover ARC-signing.
342 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
343 in defer=pass mode supply a 450 to the initiator. Previously the message
346 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
347 tls_require_ciphers is used as before.
349 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
350 "pass_unscanned". Only tmpfails from the scanner are written to
351 the paniclog, as they may require admin intervention (permission
352 denied, license issues). Other scanner errors (like decompression
353 bombs) do not cause a paniclog entry.
355 JH/36 Fix reinitialisation of DKIM logging variable between messages.
356 Previously it was possible to log spurious information in receive log
359 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
360 triggered odd behaviour from Outlook Express clients.
362 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
365 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
366 since the IETF WG has not yet settled on that versus the original
367 "bare" representation.
369 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
370 Previously the millisecond value corrupted the output.
371 Fix also for syslog_pid=no and log_selector +pid, for which the pid
372 corrupted the output.
378 JH/01 Rework error string handling in TLS interface so that the caller in
379 more cases is responsible for logging. This permits library-sourced
380 string to be attached to addresses during delivery, and collapses
381 pairs of long lines into single ones.
383 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
384 during configuration. Wildcards are allowed and expanded.
386 JH/02 Rework error string handling in DKIM to pass more info back to callers.
387 This permits better logging.
389 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
390 do not close it down and have the child transport start it up again on
391 the passed-on TCP connection. Instead, proxy the child (and any
392 subsequent ones) for TLS via a unix-domain socket channel. Logging is
393 affected: the continued delivery log lines do not have any DNSSEC, TLS
394 Certificate or OCSP information. TLS cipher information is still logged.
396 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
397 identical IP addresses on different listening ports. Will also affect
400 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
401 add noisy ifdef guards to special-case this sillyness.
402 Patch from Bernd Kuhls.
404 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
405 than 255 are no longer allowed.
407 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
408 Disable the session-cache too, which might reduce our load. Since we
409 currrectly use a new context for every connection, both as server and
410 client, there is no benefit for these.
411 GnuTLS appears to not support tickets server-side by default (we don't
412 call gnutls_session_ticket_enable_server()) but client side is enabled
413 by default on recent versions (3.1.3 +) unless the PFS priority string
416 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
417 <https://reproducible-builds.org/specs/source-date-epoch/>.
419 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
420 the check for any unsuccessful recipients did not notice the limit, and
421 erroneously found still-pending ones.
423 JH/08 Pipeline CHUNKING command and data together, on kernels that support
424 MSG_MORE. Only in-clear (not on TLS connections).
426 JH/09 Avoid using a temporary file during transport using dkim. Unless a
427 transport-filter is involved we can buffer the headers in memory for
428 creating the signature, and read the spool data file once for the
429 signature and again for transmission.
431 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
432 4.77 as the kernel support then wasn't solid, having issues in 64bit
433 mode. Now, it's been long enough. Add support for FreeBSD also.
435 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
436 case where the routing stage had gathered several addresses to send to
437 a host before calling the transport for the first, we previously failed
438 to close down TLS in the old transport process before passing the TCP
439 connection to the new process. The new one sent a STARTTLS command
440 which naturally failed, giving a failed delivery and bloating the retry
441 database. Investigation and fix prototype from Wolfgang Breyha.
443 JH/12 Fix check on SMTP command input synchronisation. Previously there were
444 false-negatives in the check that the sender had not preempted a response
445 or prompt from Exim (running as a server), due to that code's lack of
446 awareness of the SMTP input buffering.
448 PP/04 Add commandline_checks_require_admin option.
449 Exim drops privileges sanely, various checks such as -be aren't a
450 security problem, as long as you trust local users with access to their
451 own account. When invoked by services which pass untrusted data to
452 Exim, this might be an issue. Set this option in main configuration
453 AND make fixes to the calling application, such as using `--` to stop
456 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
457 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
458 responses to those, into a single TLS record each way (this usually means
459 a single packet). As a side issue, smtp_enforce_sync now works on TLS
462 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
463 affects you only if you're dancing at the edge of the param size limits.
464 If you are, and this message makes sense to you, then: raise the
465 configured limit or use OpenSSL 1.1. Nothing we can do for older
468 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
469 cmdline element to get the documented default one. Previously it was
472 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
473 are unsuable for non-message-specific reasons - eg. connection timeout,
474 banner-time rejection.
476 JH/16 Fix logging of delivery remote port, when specified by router, under
479 PP/06 Repair manualroute's ability to take options in any order, even if one
480 is the name of a transport.
483 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
485 JH/17 Change the list-building routines interface to use the expanding-string
486 triplet model, for better allocation and copying behaviour.
488 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
489 Previously it was constructed the first time a possibly-matching string
490 was met in the configuration file input during startup; now it is done
493 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
494 compatible one, to avoid the (poorly documented) possibility of a config
495 file in the working directory redirecting the DB files, possibly correpting
496 some existing file. CVE-2017-10140 assigned for BDB.
498 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
499 cache-hot. Previously, although the result was properly cached, the
500 initial verify call returned a defer.
502 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
503 the main verify for receipient in uncached-mode.
505 JH/22 Retire historical build files to an "unsupported" subdir. These are
506 defined as "ones for which we have no current evidence of testing".
508 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
509 if present. Previously it was ignored.
511 JH/24 Start using specified-initialisers in C structure init coding. This is
512 a C99 feature (it's 2017, so now considered safe).
514 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
515 if was a fixed-sized field and bitmask ops via macros; it is now more
518 PP/07 GitHub PR 56: Apply MariaDB build fix.
519 Patch provided by Jaroslav Å karvada.
521 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
522 during Coverity cleanups [4.87 JH/47]
523 Diagnosis and fix provided by Michael Fischer v. Mollard.
525 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
526 the right size to place the terminating semicolon on its own folded
527 line, the header hash was calculated to an incorrect value thanks to
528 the (relaxed) space the fold became.
530 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
531 and confused the parent.
533 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
534 which could crash as a result. This could lead to undeliverable messages.
536 JH/28 Logging: "next input sent too soon" now shows where input was truncated
539 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
540 matters on fast-turnover and PID-randomising systems, which were getting
541 out-of-order delivery.
543 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
544 a possibly-overlapping copy. The symptom was that "Remote host closed
545 connection in response to HELO" was logged instead of the actual 4xx
548 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
549 Previously only that bufferd was discarded, resulting in SYMTP command
552 JH/32 DKIM: when a message has multiple signatures matching an identity given
553 in dkim_verify_signers, run the dkim acl once for each. Previously only
554 one run was done. Bug 2189.
556 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
557 "panic the current process" to "deliberately defer". The panic log is
558 still written with the problem list name; the mail and reject logs now
559 get a temp-reject line for the message that was being handled, saying
560 something like "domains check lookup or other defer". The SMTP 451
561 message is still "Temporary local problem".
563 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
564 A crafted sequence of BDAT commands could result in in-use memory beeing
565 freed. CVE-2017-16943.
567 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
568 from SMTP input. Previously it was always done; now only done for DATA
569 and not BDAT commands. CVE-2017-16944.
571 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
572 to the message (such as an overlong header line). Previously this was
573 not done and we did not exit BDAT mode. Followon from the previous item
574 though a different problem.
580 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
581 than -2003 did; needs libidn2 in addition to libidn.
583 JH/02 The path option on a pipe transport is now expanded before use.
585 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
586 Patch provided by "Björn", documentation fix added too.
588 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
589 missing a wire-to-host endian conversion.
591 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
592 close after a BDAT command line could be taken as a following command,
593 giving a synch failure. Fix by only checking for synch immediately
594 before acknowledging the chunk.
596 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
597 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
598 macro. Patches provided by Josh Soref.
600 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
601 Previously we did not; the RFC seems ambiguous and VRFY is not listed
602 by IANA as a service extension. However, John Klensin suggests that we
605 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
606 the dkim code may be unix-mode line endings rather than smtp wire-format
607 CRLF, so prepend a CR to any bare LF.
609 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
610 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
612 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
613 the first were themselves being wrongly included in the feed into dkim
614 processing; with most chunk sizes in use this resulted in an incorrect
615 body hash calculated value.
617 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
618 DKIM signature block, for verification. Although advised against by
619 standards it is specifically not ruled illegal.
621 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
623 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
624 missing a body hash (the bh= tag).
626 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
627 It seems that HAProxy sends the Proxy Protocol information in clear and
628 only then does a TLS startup, so do the same.
630 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
631 TCP connections (such as for Spamd) unless the daemon successfully set
632 Fast Open mode on its listening sockets. This fixes breakage seen on
633 too-old kernels or those not configured for Fast Open, at the cost of
634 requiring both directions being enabled for TFO, and TFO never being used
635 by non-daemon-related Exim processes.
637 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
638 endings, at least on the first header line. Try to canonify any that get
639 past that check, despite the cost.
641 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
642 now limited to an arbitrary five deep, while parsing addresses with the
643 strip_excess_angle_brackets option enabled.
645 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
646 instead leave the unprompted TLS handshake in socket buffer for the
647 TLS library to consume.
649 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
651 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
653 JH/16 Drop variables when they go out of scope. Memory management drops a whole
654 region in one operation, for speed, and this leaves assigned pointers
655 dangling. Add checks run only under the testsuite which checks all
656 variables at a store-reset and panics on a dangling pointer; add code
657 explicitly nulling out all the variables discovered. Fixes one known
658 bug: a transport crash, where a dangling pointer for $sending_ip_address
659 originally assigned in a verify callout, is re-used.
661 PP/06 Drop '.' from @INC in various Perl scripts.
663 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
665 PP/08 Reduce a number of compilation warnings under clang; building with
666 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
667 should be warning-free.
669 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
671 HS/01 Fix portability problems introduced by PP/08 for platforms where
672 realloc(NULL) is not equivalent to malloc() [SunOS et al].
674 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
675 chunk. This allows us to accept broken chunked messages. We need a more
676 general solution here.
678 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
679 already-broken messages in the queue.
681 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
683 JH/19 Fix reference counting bug in routing-generated-address tracking.
689 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
690 supports it and a size is available (ie. the sending peer gave us one).
692 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
693 years of being deprecated). The replacements are the ACLs
694 acl_smtp_mime and acl_not_smtp_mime.
696 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
697 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
698 or even an in-clear connection were permitted. Now, if the host lookup
699 was dnssec and dane was requested then the host is only used if the
700 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
701 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
702 if one fails this test.
703 This means that a poorly-configured remote DNS will make it incommunicado;
704 but it protects against a DNS-interception attack on it.
706 JH/04 Bug 1810: make continued-use of an open smtp transport connection
707 non-noisy when a race steals the message being considered.
709 JH/05 If main configuration option tls_certificate is unset, generate a
710 self-signed certificate for inbound TLS connections.
712 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
713 in rewrites and routers.
715 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
716 and logged a warning sing 4.83; now they are a configuration file error.
718 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
719 (lacking @domain). Apply the same qualification processing as RCPT.
721 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
723 JH/10 Support ${sha256:} applied to a string (as well as the previous
726 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
727 a cutthrough deliver is pending, as we always want to make a connection.
728 This also avoids re-routing the message when later placing the cutthrough
729 connection after a verify cache hit.
730 Do not update it with the verify result either.
732 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
733 when routing results in more than one destination address.
735 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
736 signing (which inhibits the cutthrough capability). Previously only
737 the presence of an option was tested; now an expansion evaluating as
738 empty is permissible (obviously it should depend only on data available
739 when the cutthrough connection is made).
741 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
742 the relevant preceding SMTP command did not note the pipelining mode.
744 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
745 Previously they were not counted.
747 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
748 as one having no matching records. Previously we deferred the message
749 that needed the lookup.
751 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
752 distinguished as "(=".
754 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
755 for missing MX records. Previously it only worked for missing A records.
757 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
759 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
760 after the data-go-ahead and data-ack. Patch from Jason Betts.
762 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
763 even for a "none" policy. Patch from Tony Meyer.
765 JH/22 Fix continued use of a connection for further deliveries. If a port was
766 specified by a router, it must also match for the delivery to be
769 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
770 When one of the recipients of a message was unsuitable for the connection
771 (has no matching addresses), we lost track of needing to mark it
772 deferred. As a result mail would be lost.
774 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
776 JH/25 Decoding ACL controls is now done using a binary search; the source code
777 takes up less space and should be simpler to maintain. Merge the ACL
778 condition decode tables also, with similar effect.
780 JH/26 Fix problem with one_time used on a redirect router which returned the
781 parent address unchanged. A retry would see the parent address marked as
782 delivered, so not attempt the (identical) child. As a result mail would
785 JH/27 Fix a possible security hole, wherein a process operating with the Exim
786 UID can gain a root shell. Credit to http://www.halfdog.net/ for
787 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
790 JH/28 Enable {spool,log} filesystem space and inode checks as default.
791 Main config options check_{log,spool}_{inodes,space} are now
792 100 inodes, 10MB unless set otherwise in the configuration.
794 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
795 Previously it only applied to the main-section connection policy
798 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
800 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
801 by me. Added RFC7919 DH primes as an alternative.
803 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
804 are not in the system include path.
806 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
807 GnuTLS, when a session startup failed (eg because the client disconnected)
808 Exim did stdio operations after fclose. This was exposed by a recent
809 change which nulled out the file handle after the fclose.
811 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
812 signed directly by the cert-signing cert, rather than an intermediate
813 OCSP-signing cert. This is the model used by LetsEncrypt.
815 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
817 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
818 an incoming connection.
820 HS/02 Bug 1802: Do not half-close the connection after sending a request
823 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
824 fallback to "prime256v1".
826 JH/34 SECURITY: Use proper copy of DATA command in error message.
827 Could leak key material. Remotely exploitable. CVE-2016-9963.
833 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
834 and 3.4.4 - once the server is enabled to respond to an OCSP request
835 it does even when not requested, resulting in a stapling non-aware
836 client dropping the TLS connection.
838 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
839 support variable-length bit vectors. No functional change.
841 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
842 The I= interface field on outgoing lines is now after the H= remote
843 host field, same as incoming lines. There is a separate
844 outgoing_interface log selector which allows you to disable the
847 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
848 If not running log_selector +smtp_connection the mainlog would be held
849 open indefinitely after a "too many connections" event, including to a
850 deleted file after a log rotate. Leave the per net connection logging
851 leaving it open for efficiency as that will be quickly detected by the
852 check on the next write.
854 HS/01 Bug 1671: Fix post transport crash.
855 Processing the wait-<transport> messages could crash the delivery
856 process if the message IDs didn't exist for some reason. When
857 using 'split_spool_directory=yes' the construction of the spool
858 file name failed already, exposing the same netto behaviour.
860 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
861 mime_regex ACL conditions.
863 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
864 to DSN fail messages (bounces): remote IP, remote greeting, remote response
865 to HELO, local diagnostic string.
867 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
868 log line to debug. Even when configured with a tls authenticator many
869 client connections are expected to not authenticate in this way, so
870 an authenticate fail is not an error.
872 HS/02 Add the Exim version string to the process info. This way exiwhat
873 gives some more detail about the running daemon.
875 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
876 matter for fast-change records such as DNSBLs.
878 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
879 retry record, even if constant. There may be multiple transports with
880 different interface settings and the retry behaviour needs to be kept
883 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
885 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
887 JH/10 Bug 840: fix log_defer_output option of pipe transport
889 JH/11 Bug 830: use same host for all RCPTS of a message, even under
890 hosts_randomize. This matters a lot when combined with mua_wrapper.
892 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
893 ${quote_pgsql:<string>} operator.
895 JH/13 Bug 1708: avoid misaligned access in cached lookup.
897 JH/14 Change header file name for freeradius-client. Relevant if compiling
898 with Radius support; from the Gentoo tree and checked under Fedora.
900 JH/15 Bug 1712: Introduce $prdr_requested flag variable
902 JH/16 Bug 1714: Permit an empty string as expansion result for transport
903 option transport_filter, meaning no filtering.
905 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
907 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
908 defaults to "*" (all hosts). The variable is now available when not built
909 with TLS, default unset, mainly to enable keeping the testsuite sane.
910 If a server certificate is not supplied (via tls_certificate) an error is
911 logged, and clients will find TLS connections fail on startup. Presumably
912 they will retry in-clear.
913 Packagers of Exim are strongly encouraged to create a server certificate
914 at installation time.
916 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
917 with the $config_file variable.
919 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
920 in transport context, after the attempt, and per-recipient. The latter type
921 is per host attempted. The event data is the error message, and the errno
922 information encodes the lookup type (A vs. MX) used for the (first) host,
923 and the trailing two digits of the smtp 4xx response.
925 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
926 to write to mainlog (or rejectlog, paniclog) in the window between file
927 creation and permissions/ownership being changed. Particularly affects
928 installations where exicyclog is run as root, rather than exim user;
929 result is that the running daemon panics and dies.
931 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
933 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
934 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
935 "pri" and "weight". Note that the previous implicit priority given by the
936 list order is no longer honoured.
938 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
941 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
942 by defining SUPPORT_SOCKS.
944 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
945 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
946 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
947 variables are renamed to proxy_{local,external}_{address,port}.
949 JH/27 Move Internationalisation support from Experimental to mainline, enabled
950 for a build by defining SUPPORT_I18N
952 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
953 of the query string, and make ${quote_redis:} do that quoting.
955 JH/29 Move Events support from Experimental to mainline, enabled by default
956 and removable for a build by defining DISABLE_EVENT.
958 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
960 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
961 cached by the daemon.
963 JH/32 Move Redis support from Experimental to mainline, enabled for a build
964 by defining LOOKUP_REDIS. The libhiredis library is required.
966 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
967 keys are given for lookup.
969 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
970 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
971 only supported when built with TLS support. The PolarSSL SHA routines
972 are still used when the TLS library is too old for convenient support.
974 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
975 openssl_options), for security. OpenSSL forces this from version 1.1.0
976 server-side so match that on older versions.
978 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
979 allocation for $value could be released as the expansion processing
980 concluded, but leaving the global pointer active for it.
982 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
983 and to use the domains and local_parts ACL conditions.
985 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
986 incorrectly not doubled on cutthrough transmission, hence seen as a
987 body-termination at the receiving system - resulting in truncated mails.
988 Commonly the sender saw a TCP-level error, and retransmitted the message
989 via the normal store-and-forward channel. This could result in duplicates
990 received - but deduplicating mailstores were liable to retain only the
991 initial truncated version.
993 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
995 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
997 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
998 we're in there, support oversigning also; bug 1309.
1000 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1002 HS/04 Add support for keep_environment and add_environment options.
1004 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1005 either intentional arithmetic overflow during PRNG, or testing config-
1008 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1009 delivery resulted in actual delivery. Cancel cutthrough before DATA
1012 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1013 rejects a recipient: pass the reject to the originator.
1015 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1016 Many were false-positives and ignorable, but it's worth fixing the
1019 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1020 for the new environment-manipulation done at startup. Move the routines
1021 from being local to tls.c to being global via the os.c file.
1023 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1024 an extract embedded as result-arg for a map, the first arg for extract
1025 is unavailable so we cannot tell if this is a numbered or keyed
1026 extraction. Accept either.
1032 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1035 JH/02 The smtp transport option "multi_domain" is now expanded.
1037 JH/03 The smtp transport now requests PRDR by default, if the server offers
1040 JH/04 Certificate name checking on server certificates, when exim is a client,
1041 is now done by default. The transport option tls_verify_cert_hostnames
1042 can be used to disable this per-host. The build option
1043 EXPERIMENTAL_CERTNAMES is withdrawn.
1045 JH/05 The value of the tls_verify_certificates smtp transport and main options
1046 default to the word "system" to access the system default CA bundle.
1047 For GnuTLS, only version 3.0.20 or later.
1049 JH/06 Verification of the server certificate for a TLS connection is now tried
1050 (but not required) by default. The verification status is now logged by
1051 default, for both outbound TLS and client-certificate supplying inbound
1054 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1057 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1058 Status Notification (bounce) messages are now MIME format per RFC 3464.
1059 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1060 under the control of the dsn_advertise_hosts option, and routers may
1061 have a dsn_lasthop option.
1063 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1064 default, modifiable by a malware= option. The list separator for
1065 the options can now be changed in the usual way. Bug 68.
1067 JH/10 The smtp_receive_timeout main option is now expanded before use.
1069 JH/11 The incoming_interface log option now also enables logging of the
1070 local interface on delivery outgoing connections.
1072 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1073 if the interface and destination host and port all match.
1075 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1078 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1079 Patch from Andrew Lewis.
1081 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1082 now supports optional time-restrictions, weighting, and priority
1083 modifiers per server. Patch originally by <rommer@active.by>.
1085 JH/16 The spamd_address main option now supports a mixed list of local
1086 and remote servers. Remote servers can be IPv6 addresses, and
1087 specify a port-range.
1089 JH/17 Bug 68: The spamd_address main option now supports an optional
1090 timeout value per server.
1092 JH/18 Bug 1581: Router and transport options headers_add/remove can
1093 now have the list separator specified.
1095 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1098 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1101 JH/21 Support for the A6 type of dns record is withdrawn.
1103 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1104 rather than the verbs used.
1106 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1107 from 255 to 1024 chars.
1109 JH/24 Verification callouts now attempt to use TLS by default.
1111 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1112 are generic router options now. The defaults didn't change.
1114 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1115 Original patch from Alexander Shikoff, worked over by JH.
1117 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1118 files if ZCAT_COMMAND is not executable.
1120 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1122 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1124 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1125 Normally benign, it bites when the pair was led to by a CNAME;
1126 modern usage is to not canonicalize the domain to a CNAME target
1127 (and we were inconsistent anyway for A-only vs AAAA+A).
1129 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1131 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1132 when evaluating $sender_host_dnssec.
1134 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1135 $sender_helo_dnssec variable.
1137 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1139 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1141 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1143 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1144 documented as working, but never had. Support all but $spam_report.
1146 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1147 added for tls authenticator.
1149 HS/03 Add perl_taintmode main config option
1155 TL/01 When running the test suite, the README says that variables such as
1156 no_msglog_check are global and can be placed anywhere in a specific
1157 test's script, however it was observed that placement needed to be near
1158 the beginning for it to behave that way. Changed the runtest perl
1159 script to read through the entire script once to detect and set these
1160 variables, reset to the beginning of the script, and then run through
1161 the script parsing/test process like normal.
1163 TL/02 The BSD's have an arc4random API. One of the functions to induce
1164 adding randomness was arc4random_stir(), but it has been removed in
1165 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1166 function when detected.
1168 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1169 cause callback expansion.
1171 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1172 syntax errors in an expansion can be treated as a string instead of
1173 logging or causing an error, due to the internal use of bool_lax
1174 instead of bool when processing it.
1176 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1177 server certificates when making smtp deliveries.
1179 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1181 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1183 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1185 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1186 Merged patch from Sebastian Wiedenroth.
1188 JH/05 Fix results-pipe from transport process. Several recipients, combined
1189 with certificate use, exposed issues where response data items split
1190 over buffer boundaries were not parsed properly. This eventually
1191 resulted in duplicates being sent. This issue only became common enough
1192 to notice due to the introduction of connection certificate information,
1193 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1195 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1196 size buffer was used, resulting in syntax errors when an expansion
1199 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1200 version 3.3.6 or later.
1202 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1203 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1204 both become "event_action", the variables become $event_name, $event_data
1205 and $event_defer_errno. There is a new variable $verify_mode, usable in
1206 routers, transports and related events. The tls:cert event is now also
1207 raised for inbound connections, if the main configuration event_action
1210 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1211 early OCSP support, but no stapling (appears to be less than 1.0.0).
1213 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1214 server certificate names available under the smtp transport option
1215 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1218 JH/10 Time-related extraction expansions from certificates now use the main
1219 option "timezone" setting for output formatting, and are consistent
1220 between OpenSSL and GnuTLS compilations. Bug 1541.
1222 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1223 encoded parameter in the incoming message. Bug 1558.
1225 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1226 include certificate info, eximon was claiming there were spoolfile
1229 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1231 JH/14 Log delivery-related information more consistently, using the sequence
1232 "H=<name> [<ip>]" wherever possible.
1234 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1235 are problematic for Debian distribution, omit them from the release
1238 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1240 JH/16 Fix string representation of time values on 64bit time_t architectures.
1243 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1244 output list separator was used.
1249 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1250 checkers that were complaining about end of non-void function with no
1253 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1254 This was a regression introduced in 4.83 by another bugfix.
1256 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1258 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1259 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1265 TF/01 Correctly close the server side of TLS when forking for delivery.
1267 When a message was received over SMTP with TLS, Exim failed to clear up
1268 the incoming connection properly after forking off the child process to
1269 deliver the message. In some situations the subsequent outgoing
1270 delivery connection happened to have the same fd number as the incoming
1271 connection previously had. Exim would try to use TLS and fail, logging
1272 a "Bad file descriptor" error.
1274 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1275 utilities have not been installed.
1277 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1278 temporary space as the ACL may create new global variables.
1280 TL/01 LDAP support uses per connection or global context settings, depending
1281 upon the detected version of the libraries at build time.
1283 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1284 to extract and use the src ip:port in logging and expansions as if it
1285 were a direct connection from the outside internet. PPv2 support was
1286 updated based on HAProxy spec change in May 2014.
1288 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1290 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1291 Properly escape header and check for NULL return.
1293 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1296 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1298 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1299 characters in header names, implemented as a verify condition.
1300 Contributed by Michael Fischer v. Mollard.
1302 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1303 results permerror and temperror. Previous values are deprecated but
1304 still accepted. In a future release, err_perm and err_temp will be
1305 completely removed, which will be a backward incompatibility if the
1306 ACL tests for either of these two old results. Patch contributed by
1307 user bes-internal on the mailing list.
1309 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1311 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1312 selectors, in both main and reject logs.
1314 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1317 JH/07 Add malware type "sock" for talking to simple daemon.
1319 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1321 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1322 routers/transports under cutthrough routing.
1324 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1325 numbers. Touch up "bool" conditional to keep the same definition.
1327 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1329 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1331 JH/12 Expand items in router/transport headers_add or headers_remove lists
1332 individually rather than the list as a whole. Bug 1452.
1334 Required for reasonable handling of multiple headers_ options when
1335 they may be empty; requires that headers_remove items with embedded
1336 colons must have them doubled (or the list-separator changed).
1338 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1339 view the policy declared in the DMARC record. Currently, $dmarc_status
1340 is a combined value of both the record presence and the result of the
1343 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1345 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1346 dnslookup router and the smtp transport (applying to the forward
1349 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1350 of ldap servers used for a specific lookup. Patch provided by Heiko
1353 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1354 New variable $lookup_dnssec_authenticated for observability.
1356 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1357 Patch submitted by Lars Timman.
1359 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1361 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1362 Requires trusted mode and valid format message id, aborts otherwise.
1363 Patch contributed by Heiko Schlichting.
1365 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1366 certextract with support for various fields. Bug 1358.
1368 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1369 is requested by default, modifiable by smtp transport option
1372 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1373 operate on certificate variables to give certificate fingerprints
1374 Also new ${sha256:cert_variable}.
1376 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1378 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1379 Christian Aistleitner.
1381 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1383 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1384 file. Patch from Wolfgang Breyha.
1386 JH/25 Expand the coverage of the delivery $host and $host_address to
1387 client authenticators run in verify callout. Bug 1476.
1389 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1390 align with daemon_smtp_ports. Bug 72.
1392 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1393 support and error reporting did not work properly.
1395 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1396 and is readable. Patch from Andrew Colin Kissa.
1398 TL/14 Enhance documentation of ${run expansion and how it parses the
1399 commandline after expansion, particularly in the case when an
1400 unquoted variable expansion results in an empty value.
1402 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1404 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1405 by renaming away from it. Addresses GH issue 15, reported by
1408 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1410 TL/15 SECURITY: prevent double expansion in math comparison functions
1411 (can expand unsanitized data). Not remotely exploitable.
1418 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1420 PP/02 Make -n do something, by making it not do something.
1421 When combined with -bP, the name of an option is not output.
1423 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1426 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1427 $sender_host_name and config options to manage this, and basic check
1430 PP/05 DSCP support for outbound connections and control modifier for inbound.
1432 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1433 (Only plugin which currently uses this is kerberos4, which nobody should
1434 be using, but we should make it available and other future plugins might
1435 conceivably use it, even though it would break NAT; stuff *should* be
1436 using channel bindings instead).
1438 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1439 name; added for Sendmail compatibility; requires admin caller.
1440 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1441 just ignore it); requires trusted caller.
1442 Also parse but ignore: -Ac -Am -X<logfile>
1445 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1447 TL/02 Add +smtp_confirmation as a default logging option.
1449 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1450 Patch by Magnus Holmgren from 2007-02-20.
1452 TL/04 Bugzilla 1281 - Spec typo.
1453 Bugzilla 1283 - Spec typo.
1454 Bugzilla 1290 - Spec grammar fixes.
1456 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1458 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1460 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1461 mailing list by by Dmitry Isaikin.
1463 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1465 JH/02 Support "G" suffix to numbers in ${if comparisons.
1467 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1469 NM/01 Bugzilla 1197 - Spec typo
1470 Bugzilla 1196 - Spec examples corrections
1472 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1474 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1475 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1478 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1479 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1481 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1482 "acl {{name}{arg}...}", and optional args on acl condition
1485 JH/05 Permit multiple router/transport headers_add/remove lines.
1487 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1489 JH/07 Avoid using a waiting database for a single-message-only transport.
1490 Performance patch from Paul Fisher. Bugzilla 1262.
1492 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1495 JH/09 Add $headers_added variable, with content from use of ACL modifier
1496 add_header (but not yet added to the message). Bugzilla 199.
1498 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1499 Pulled from Bugzilla 817 by Wolfgang Breyha.
1501 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1503 (nb: this is the same fix as in Exim 4.80.1)
1505 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1508 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1511 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1513 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1514 advertise SMTP AUTH mechanism to us, instead of a generic
1515 protocol violation error. Also, make Exim more robust to bad
1516 data from the Dovecot auth socket.
1518 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1520 When a queue runner is handling a message, Exim first routes the
1521 recipient addresses, during which it prunes them based on the retry
1522 hints database. After that it attempts to deliver the message to
1523 any remaining recipients. It then updates the hints database using
1526 So if a recipient address works intermittently, it can get repeatedly
1527 deferred at routing time. The retry hints record remains fresh so the
1528 address never reaches the final cutoff time.
1530 This is a fairly common occurrence when a user is bumping up against
1531 their storage quota. Exim had some logic in its local delivery code
1532 to deal with this. However it did not apply to per-recipient defers
1533 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1535 This change adds a proper retry rule check during routing so that the
1536 final cutoff time is checked against the message's age. We only do
1537 this check if there is an address retry record and there is not a
1538 domain retry record; this implies that previous attempts to handle
1539 the address had the retry_use_local_parts option turned on. We use
1540 this as an approximation for the destination being like a local
1541 delivery, as in LMTP.
1543 I suspect this new check makes the old local delivery cutoff check
1544 redundant, but I have not verified this so I left the code in place.
1546 TF/02 Correct gecos expansion when From: is a prefix of the username.
1548 Test 0254 submits a message to Exim with the header
1552 When I ran the test suite under the user fanf2, Exim expanded
1553 the header to contain my full name, whereas it should have added
1554 a Resent-Sender: header. It erroneously treats any prefix of the
1555 username as equal to the username.
1557 This change corrects that bug.
1559 GF/01 DCC debug and logging tidyup
1560 Error conditions log to paniclog rather than rejectlog.
1561 Debug lines prefixed by "DCC: " to remove any ambiguity.
1563 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1565 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1566 Bug spotted by Jeremy Harris; was flawed since initial commit.
1567 Would have resulted in OCSP responses post-SNI triggering an Exim
1568 NULL dereference and crash.
1570 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1572 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1573 Bug detection, analysis and fix by Samuel Thibault.
1574 Bugzilla 1331, Debian bug #698092.
1576 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1578 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1579 Server implementation by Todd Lyons, client by JH.
1580 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1581 config variable "prdr_enable" controls whether the server
1582 advertises the facility. If the client requests PRDR a new
1583 acl_data_smtp_prdr ACL is called once for each recipient, after
1584 the body content is received and before the acl_smtp_data ACL.
1585 The client is controlled by both of: a hosts_try_prdr option
1586 on the smtp transport, and the server advertisement.
1587 Default client logging of deliveries and rejections involving
1588 PRDR are flagged with the string "PRDR".
1590 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1591 fclose(). Diagnosis by Todd Lyons.
1593 PP/17 Update configure.default to handle IPv6 localhost better.
1594 Patch by Alain Williams (plus minor tweaks).
1597 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1598 This is now consistent with GnuTLS, and is now documented: the
1599 previous undocumented portable approach to treating the option as
1600 unset was to force an expansion failure. That still works, and
1601 an empty string is now equivalent.
1603 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1604 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1605 not performing validation itself.
1607 PP/20 Added force_command boolean option to pipe transport.
1608 Patch from Nick Koston, of cPanel Inc.
1610 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1613 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1615 PP/21 Fix eximon continuous updating with timestamped log-files.
1616 Broken in a format-string cleanup in 4.80, missed when I repaired the
1617 other false fix of the same issue.
1618 Report and fix from Heiko Schlichting.
1621 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1622 Report from Prashanth Katuri.
1624 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1625 It's SecureTransport, so affects any MacOS clients which use the
1626 system-integrated TLS libraries, including email clients.
1628 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1629 using a MIME ACL for non-SMTP local injection.
1630 Report and assistance in diagnosis by Warren Baker.
1632 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1634 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1636 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1637 last id that failed so it may be referenced in subsequent ACL's.
1639 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1642 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1643 ldap library initialization, allowing self-signed CA's to be
1644 used. Also properly sets require_cert option later in code by
1645 using NULL (global ldap config) instead of ldap handle (per
1646 session). Bug diagnosis and testing by alxgomz.
1648 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1649 the src/util/ subdirectory.
1651 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1652 renamed to Transport Post Delivery Action by Jeremy Harris, as
1655 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1656 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1657 redis_servers = needs to be configured which will be used by the redis
1658 lookup. Patch from Warren Baker, of The Packet Hub.
1660 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1662 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1663 hostname or reverse DNS when processing a host list. Used suggestions
1664 from multiple comments on this bug.
1666 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1668 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1669 Missed a few lines, added it to make the runtest require no keyboard
1672 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1673 contains upper case chars. Make router use caseful_local_part.
1675 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1676 support when GnuTLS has been built with p11-kit.
1682 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1684 This, or similar/improved, will also be change PP/11 of 4.82.
1690 PP/01 Handle short writes when writing local log-files.
1691 In practice, only affects FreeBSD (8 onwards).
1692 Bugzilla 1053, with thanks to Dmitry Isaikin.
1694 NM/01 Bugzilla 949 - Documentation tweak
1696 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1699 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1701 PP/02 Implemented gsasl authenticator.
1703 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1705 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1706 `pkg-config foo` for cflags/libs.
1708 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1709 with rest of GSASL and with heimdal_gssapi.
1711 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1712 `pkg-config foo` for cflags/libs for the TLS implementation.
1714 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1715 properties get this fed in as external SSF. A number of robustness
1716 and debugging improvements to the cyrus_sasl authenticator.
1718 PP/08 cyrus_sasl server now expands the server_realm option.
1720 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1721 Patch by Jeremy Harris.
1723 PP/10 Added dbmjz lookup type.
1725 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1727 PP/12 MAIL args handles TAB as well as SP, for better interop with
1728 non-compliant senders.
1729 Analysis and variant patch by Todd Lyons.
1731 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1732 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1733 Patch from Dirk Mueller <dmueller@suse.com>
1735 PP/13 tls_peerdn now print-escaped for spool files.
1736 Observed some $tls_peerdn in wild which contained \n, which resulted
1737 in spool file corruption.
1739 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1740 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1741 or write after TLS renegotiation, which otherwise led to messages
1744 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1745 as a tracking header (ie: a signed header comes before the signature).
1746 Patch from Wolfgang Breyha.
1748 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1749 comma-sep list; embedded commas doubled.
1751 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1753 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1755 Report and patch from Dmitry Banschikov.
1757 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1758 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1759 failures. We appear to now support TLS1.1+ with Exim.
1761 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1762 lets Exim select keys and certificates based upon TLS SNI from client.
1763 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1764 before an outbound SMTP session. New log_selector, +tls_sni.
1766 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1767 NULL dereference. Report and patch from Alun Jones.
1769 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1770 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1771 Not seeing resolver debug output on NetBSD, but suspect this is a
1772 resolver implementation change.
1774 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1775 Left warnings. Added "eximon gdb" invocation mode.
1777 PP/21 Defaulting "accept_8bitmime" to true, not false.
1779 PP/22 Added -bw for inetd wait mode support.
1781 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1782 locate the relevant includes and libraries. Made this the default.
1784 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1785 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1787 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1788 This may cause build issues on older platforms.
1790 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1791 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1792 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1793 Added SNI support via GnuTLS too.
1794 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1796 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1798 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1799 Applied second patch from Janne, implementing suggestion to default
1800 multiple-strings-in-record handling to match SPF spec.
1802 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1804 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1805 read-only, out of scope).
1806 Patch from Wolfgang Breyha, report from Stuart Northfield.
1808 PP/29 Fix three issues highlighted by clang analyser static analysis.
1809 Only crash-plausible issue would require the Cambridge-specific
1810 iplookup router and a misconfiguration.
1811 Report from Marcin Mirosław.
1813 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1815 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1816 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1817 As part of this, removing so much warning spew let me fix some minor
1818 real issues in debug logging.
1820 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1821 assignment on my part. Fixed.
1823 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1824 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1825 Janne Snabb (who went above and beyond: thank you).
1827 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1828 string otherwise requires a connection and a bunch more work and it's
1829 relatively easy to get wrong. Should also expose TLS library linkage
1832 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1833 64-bit ${eval} (JH/03).
1835 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1836 GNU libc to support some of the 64-bit stuff, should not lead to
1837 conflicts. Defined before os.h is pulled in, so if a given platform
1838 needs to override this, it can.
1840 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1841 protection layer was required, which is not implemented.
1842 Bugzilla 1254, patch from Wolfgang Breyha.
1844 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1845 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1846 tls_dhparam take prime identifiers. Also unbreak combination of
1847 OpenSSL+DH_params+TLSSNI.
1849 PP/39 Disable SSLv2 by default in OpenSSL support.
1855 PP/01 Solaris build fix for Oracle's LDAP libraries.
1856 Bugzilla 1109, patch from Stephen Usher.
1858 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1860 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1863 TF/02 Fix a couple more cases where we did not log the error message
1864 when unlink() failed. See also change 4.74-TF/03.
1866 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1867 lock up or crash if it happened to be inside a call to libc when it
1868 got a SIGUSR1 from exiwhat.
1870 The SIGUSR1 handler appends the current process status to the process
1871 log which is later printed by exiwhat. It used to use the general
1872 purpose logging code to do this, but several functions it calls are
1873 not safe for signals.
1875 The new output code in the SIGUSR1 handler is specific to the process
1876 log, and simple enough that it's easy to inspect for signal safety.
1877 Removing some special cases also simplifies the general logging code.
1878 Removing the spurious timestamps from the process log simplifies
1881 TF/04 Improved ratelimit ACL condition.
1883 The /noupdate option has been deprecated in favour of /readonly which
1884 has clearer semantics. The /leaky, /strict, and /readonly update modes
1885 are mutually exclusive. The update mode is no longer included in the
1886 database key; it just determines when the database is updated. (This
1887 means that when you upgrade Exim will forget old rate measurements.)
1889 Exim now checks that the per_* options are used with an update mode that
1890 makes sense for the current ACL. For example, when Exim is processing a
1891 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1892 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1893 must specify per_mail/readonly. If you omit the update mode it defaults to
1894 /leaky where that makes sense (as before) or /readonly where required.
1896 The /noupdate option is now undocumented but still supported for
1897 backwards compatibility. It is equivalent to /readonly except that in
1898 ACLs where /readonly is required you may specify /leaky/noupdate or
1899 /strict/noupdate which are treated the same as /readonly.
1901 A useful new feature is the /count= option. This is a generalization
1902 of the per_byte option, so that you can measure the throughput of other
1903 aggregate values. For example, the per_byte option is now equivalent
1904 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1906 The per_rcpt option has been generalized using the /count= mechanism
1907 (though it's more complicated than the per_byte equivalence). When it is
1908 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1909 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1910 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1911 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1912 Note that using per_rcpt with a non-readonly update mode in more than
1913 one ACL will cause the recipients to be double-counted. (The per_mail
1914 and per_byte options don't have this problem.)
1916 The handling of very low rates has changed slightly. If the computed rate
1917 is less than the event's count (usually one) then this event is the first
1918 after a long gap. In this case the rate is set to the same as this event's
1919 count, so that the first message of a spam run is counted properly.
1921 The major new feature is a mechanism for counting the rate of unique
1922 events. The new per_addr option counts the number of different
1923 recipients that someone has sent messages to in the last time period. It
1924 behaves like per_rcpt if all the recipient addresses are different, but
1925 duplicate recipient addresses do not increase the measured rate. Like
1926 the /count= option this is a general mechanism, so the per_addr option
1927 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1928 example, measure the rate that a client uses different sender addresses
1929 with the options per_mail/unique=$sender_address. There are further
1930 details in the main documentation.
1932 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1934 TF/06 Removed a few PCRE remnants.
1936 TF/07 Automatically extract Exim's version number from tags in the git
1937 repository when doing development or release builds.
1939 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1940 Bugzilla 879. Patch from Paul Fisher.
1942 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1943 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1946 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1948 PP/05 Variable $av_failed, true if the AV scanner deferred.
1949 Bugzilla 1078. Patch from John Horne.
1951 PP/06 Stop make process more reliably on build failure.
1952 Bugzilla 1087. Patch from Heiko Schlittermann.
1954 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1955 Bugzilla 1089. Patch from Heiko Schlittermann.
1957 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1958 Bugzilla 1131. Patch from Holger Weiß.
1960 PP/09 Handle IPv6 addresses with SPF.
1961 Bugzilla 860. Patch from Wolfgang Breyha.
1963 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1965 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1968 PP/11 match_* no longer expand right-hand-side by default.
1969 New compile-time build option, EXPAND_LISTMATCH_RHS.
1970 New expansion conditions, "inlist", "inlisti".
1972 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1974 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1976 PP/14 fix log_write() format string regression from TF/03.
1977 Bugzilla 1152. Patch from Dmitry Isaikin.
1983 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1985 PP/02 Harmonised TLS library version reporting; only show if debugging.
1986 Layout now matches that introduced for other libraries in 4.74 PP/03.
1988 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1990 PP/04 New "dns_use_edns0" global option.
1992 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1995 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1996 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1998 TK/01 Updated PolarSSL code to 0.14.2.
1999 Bugzilla 1097. Patch from Andreas Metzler.
2001 PP/07 Catch divide-by-zero in ${eval:...}.
2002 Fixes bugzilla 1102.
2004 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2007 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2008 format-string attack -- SECURITY: remote arbitrary code execution.
2010 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2011 time unintentionally subject to list matching rules, letting the header
2012 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2013 arbitrary string expansion). This allowed for information disclosure.
2015 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2016 INT_MIN/-1 -- value coerced to INT_MAX.
2022 NM/01 Workaround for PCRE version dependency in version reporting
2025 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2026 This fixes portability to compilers other than gcc, notably
2027 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2029 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2030 makefiles for portability to HP-UX and POSIX correctness.
2032 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2033 Also via indented variable definition in the Makefile.
2034 (Debugging by Oliver Heesakkers).
2036 PP/02 Restore caching of spamd results with expanded spamd_address.
2037 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2039 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2040 Improves build reliability. Fix from: Frank Elsner
2042 NM/02 Fix wide character breakage in the rfc2047 coding
2043 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2045 NM/03 Allow underscore in dnslist lookups
2046 Fixes bug 1026. Patch from Graeme Fowler
2048 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2049 Code patches from Adam Ciarcinski of NetBSD.
2051 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2054 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2055 is logged, to avoid truncation. Patch from John Horne.
2057 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2058 Patch from Jakob Hirsch.
2060 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2061 SQL string expansion failure details.
2062 Patch from Andrey Oktyabrski.
2064 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2065 Patch from Simon Arlott.
2067 PP/09 New lookups functionality failed to compile on old gcc which rejects
2068 extern declarations in function scope.
2069 Patch from Oliver Fleischmann
2071 PP/10 Use sig_atomic_t for flags set from signal handlers.
2072 Check getgroups() return and improve debugging.
2073 Fixed developed for diagnosis in bug 927 (which turned out to be
2076 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2077 Patch from Mark Zealey.
2079 PP/12 Bugzilla 1056: Improved spamd server selection.
2080 Patch from Mark Zealey.
2082 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2083 Based on patch from Heiko Schlittermann.
2085 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2086 Patch from Uwe Doering, sign-off by Michael Haardt.
2088 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2089 variable declaration deep within a block. Bug and patch from
2092 PP/15 lookups-Makefile IRIX compatibility coercion.
2094 PP/16 Make DISABLE_DKIM build knob functional.
2096 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2097 Patch by Simon Arlott
2099 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2100 variable argument macros. Our copy now differs from upstream.
2106 TF/01 Failure to get a lock on a hints database can have serious
2107 consequences so log it to the panic log.
2109 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2110 controlled using the smtp_confirmation log selector.
2112 TF/03 Include the error message when we fail to unlink a spool file.
2114 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2115 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2116 for maintaining out-of-tree patches for some time.
2118 PP/01 Bugzilla 139: Documentation and portability issues.
2119 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2120 Handle per-OS dynamic-module compilation flags.
2122 PP/02 Let /dev/null have normal permissions.
2123 The 4.73 fixes were a little too stringent and complained about the
2124 permissions on /dev/null. Exempt it from some checks.
2125 Reported by Andreas M. Kirchwitz.
2127 PP/03 Report version information for many libraries, including
2128 Exim version information for dynamically loaded libraries. Created
2129 version.h, now support a version extension string for distributors
2130 who patch heavily. Dynamic module ABI change.
2132 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2133 privilege escalation vulnerability whereby the Exim run-time user
2134 can cause root to append content of the attacker's choosing to
2137 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2140 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2141 If dropping privileges for untrusted macros, we disabled normal logging
2142 on the basis that it would fail; for the Exim run-time user, this is not
2143 the case, and it resulted in successful deliveries going unlogged.
2144 Fixed. Reported by Andreas Metzler.
2150 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2151 only prepend for the Resent-* case. Fixes regression introduced in
2152 Exim 4.70 by NM/22 for Bugzilla 607.
2154 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2155 increasing numbers of administrators be bitten by this.
2157 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2159 PP/03 Bugzilla 994: added openssl_options main configuration option.
2161 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2163 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2165 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2167 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2168 without a peer certificate, leading to a segfault because of an
2169 assumption that peers always have certificates. Be a little more
2170 paranoid. Problem reported by Martin Tscholak.
2172 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2173 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2174 NB: ClamAV planning to remove STREAM in "middle of 2010".
2175 CL also introduces -bmalware, various -d+acl logging additions and
2176 more caution in buffer sizes.
2178 PP/09 Implemented reverse_ip expansion operator.
2180 PP/10 Bugzilla 937: provide a "debug" ACL control.
2182 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2184 PP/12 Bugzilla 973: Implement --version.
2186 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2188 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2190 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2192 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2193 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2194 ignore trailing whitespace.
2196 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2198 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2201 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2202 Notification from Dr Andrew Aitchison.
2204 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2205 ExtendedDetectionInfo response format.
2206 Notification from John Horne.
2208 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2211 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2212 XSL and documented dependency on system catalogs, with examples of how
2215 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2218 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2219 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2220 configuration file which is writeable by the Exim user or group.
2222 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2223 of configuration files to cover files specified with the -C option if
2224 they are going to be used with root privileges, not just the default
2227 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2228 option (effectively making it always true).
2230 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2231 files to be used while preserving root privileges.
2233 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2234 that rogue child processes cannot use them.
2236 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2237 run-time user, instead of root.
2239 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2240 Exim run-time user without dropping privileges.
2242 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2243 result string, instead of calling string_vformat() twice with the same
2246 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2247 for other users. Others should always drop root privileges if they use
2248 -C on the command line, even for a whitelisted configure file.
2250 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2252 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2258 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2259 $data_path, and $header_path variables; fixed documentation bugs and
2262 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2263 exipick to access non-standard spools, including the "frozen" queue
2266 NM/01 Bugzilla 965: Support mysql stored procedures.
2267 Patch from Alain Williams
2269 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2271 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2272 Patch from Andreas Metzler
2274 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2275 Patch from Kirill Miazine
2277 NM/05 Bugzilla 671: Added umask to procmail example.
2279 JJ/03 installed exipick 20100323.0, fixing doc bug
2281 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2282 directory. Notification and patch from Dan Rosenberg.
2284 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2286 TK/02 Improve log output when DKIM signing operation fails.
2288 MH/01 Treat the transport option dkim_domain as a colon separated
2289 list, not as a single string, and sign the message with each element,
2290 omitting multiple occurences of the same signer.
2292 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2293 Bugzilla 985, 986. Patch by Simon Arlott
2295 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2296 Patch by Simon Arlott
2298 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2299 MBX locking. Notification from Dan Rosenberg.
2305 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2307 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2309 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2311 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2313 NM/04 Bugzilla 915: Flag broken perl installation during build.
2319 TK/01 Added patch by Johannes Berg that expands the main option
2320 "spamd_address" if it starts with a dollar sign.
2322 TK/02 Write list of recipients to X-Envelope-Sender header when building
2323 the mbox-format spool file for content scanning (suggested by Jakob
2326 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2327 (http://www.dcc-servers.net/) support via dccifd. Activated by
2328 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2330 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2331 by Mark Daniel Reidel <mr@df.eu>.
2333 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2334 When building exim an external PCRE library is now needed -
2335 PCRE is a system library on the majority of modern systems.
2336 See entry on PCRE_LIBS in EDITME file.
2338 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2339 conversation. Added nologin parameter to request.
2340 Patch contributed by Kirill Miazine.
2342 TF/01 Do not log submission mode rewrites if they do not change the address.
2344 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2346 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2347 log files in place. Contributed by Roberto Lima.
2349 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2351 TF/03 Bugzilla 615: When checking the local_parts router precondition
2352 after a local_part_suffix or local_part_prefix option, Exim now
2353 does not use the address's named list lookup cache, since this
2354 contains cached lookups for the whole local part.
2356 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2357 Robert Millan. Documentation is in experimental-spec.txt.
2359 TF/04 Bugzilla 668: Fix parallel build (make -j).
2361 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2363 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2364 Patch provided by Jan Srzednicki.
2366 TF/05 Leading white space used to be stripped from $spam_report which
2367 wrecked the formatting. Now it is preserved.
2369 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2370 that they are available at delivery time.
2372 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2374 TF/08 TLS error reporting now respects the incoming_interface and
2375 incoming_port log selectors.
2377 TF/09 Produce a more useful error message if an SMTP transport's hosts
2378 setting expands to an empty string.
2380 NM/06 Bugzilla 744: EXPN did not work under TLS.
2381 Patch provided by Phil Pennock.
2383 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2384 Patch provided by Richard Godbee.
2386 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2387 acl_smtp_notquit, added index entry.
2389 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2390 Patch provided by Eugene Bujak.
2392 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2393 accept(). Patch provided by Maxim Dounin.
2395 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2396 Patch provided by Phil Pennock.
2398 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2400 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2401 Patch provided by Brad "anomie" Jorsch.
2403 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2404 Patch provided by Dean Brooks.
2406 TK/05 Add native DKIM support (does not depend on external libraries).
2408 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2409 Patch provided by Graeme Fowler.
2411 NM/16 Bugzilla 851: Documentation example syntax fix.
2413 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2415 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2418 NM/19 Bugzilla 745: TLS version reporting.
2419 Patch provided by Phil Pennock.
2421 NM/20 Bugzilla 167: bool: condition support.
2422 Patch provided by Phil Pennock.
2424 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2425 clients. Patch provided by Phil Pennock.
2427 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2428 Patch provided by Brad "anomie" Jorsch.
2430 NM/23 Bugzilla 687: Fix misparses in eximstats.
2431 Patch provided by Heiko Schlittermann.
2433 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2434 Patch provided by Heiko Schlittermann.
2436 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2437 plus update to original patch.
2439 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2441 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2442 Patch provided by David Brownlee.
2444 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2446 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2448 NM/30 Bugzilla 888: TLS documentation bugfixes.
2450 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2452 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2453 Unlike the original bugzilla I have changed all shell scripts in src tree.
2455 NM/33 Bugzilla 898: Transport filter timeout fix.
2456 Patch by Todd Rinaldo.
2458 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2459 Patch by Serge Demonchaux.
2461 NM/35 Bugzilla 39: Base64 decode bug fixes.
2462 Patch by Jakob Hirsch.
2464 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2466 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2468 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2470 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2476 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2477 ALT-N's libdkim that I have put here:
2478 http://duncanthrax.net/exim-experimental/
2480 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2481 were called 'true' and it seems that C99 defines that as a reserved
2482 keyword to be used with 'bool' variable types. That means you could
2483 not include C99-style headers which use bools without triggering
2484 build errors in sieve.c.
2486 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2487 as mailq or other aliases. Changed the --help handling significantly
2488 to do whats expected. exim_usage() emits usage/help information.
2490 SC/01 Added the -bylocaldomain option to eximstats.
2492 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2494 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2496 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2502 PH/01 Another patch from the Sieve maintainer.
2504 PH/02 When an IPv6 address is converted to a string for single-key lookup
2505 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2506 dots are used instead of colons so that keys in lsearch files need not
2507 contain colons. This was done some time before quoting was made available
2508 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2509 (notated using the quote facility) so as to distinguish them from IPv4
2510 keys. This meant that lookups for IP addresses in host lists did not work
2511 for iplsearch lookups.
2513 This has been fixed by arranging for IPv6 addresses to be expressed with
2514 colons if the lookup type is iplsearch. This is not incompatible, because
2515 previously such lookups could never work.
2517 The situation is now rather anomalous, since one *can* have colons in
2518 ordinary lsearch keys. However, making the change in all cases is
2519 incompatible and would probably break a number of configurations.
2521 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2524 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2525 conversion specification without a maximum field width, thereby enabling
2526 a rogue spamd server to cause a buffer overflow. While nobody in their
2527 right mind would setup Exim to query an untrusted spamd server, an
2528 attacker that gains access to a server running spamd could potentially
2529 exploit this vulnerability to run arbitrary code as the Exim user.
2531 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2532 $primary_hostname instead of what libspf2 thinks the hosts name is.
2534 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2535 a directory entry by the name of the lookup key. Previously, if a
2536 symlink pointed to a non-existing file or a file in a directory that
2537 Exim lacked permissions to read, a lookup for a key matching that
2538 symlink would fail. Now it is enough that a matching directory entry
2539 exists, symlink or not. (Bugzilla 503.)
2541 PH/03 The body_linecount and body_zerocount variables are now exported in the
2544 PH/04 Added the $dnslist_matched variable.
2546 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2547 This means they are set thereafter only if the connection becomes
2550 PH/06 Added the client_condition to authenticators so that some can be skipped
2551 by clients under certain conditions.
2553 PH/07 The error message for a badly-placed control=no_multiline_responses left
2554 "_responses" off the end of the name.
2556 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2558 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2559 (without spaces) instead of just copying the configuration text.
2561 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2563 PH/11 Added $max_received_linelength.
2565 PH/12 Added +ignore_defer and +include_defer to host lists.
2567 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2568 way in which PCRE > 7.0 is built.
2570 PH/14 Implemented queue_only_load_latch.
2572 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2573 MAIL command. The effect was to mangle the value on 64-bit systems.
2575 PH/16 Another patch from the Sieve maintainer.
2577 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2579 PH/18 If a system quota error occurred while trying to create the file for
2580 a maildir delivery, the message "Mailbox is full" was not appended to the
2581 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2582 only to a quota excession during the actual writing of the file.
2584 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2585 characters?) which causes problems in log lines. The DN values are now
2586 passed through string_printing() before being added to log lines.
2588 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2589 and InterBase are left for another time.)
2591 PH/21 Added message_body_newlines option.
2593 PH/22 Guard against possible overflow in moan_check_errorcopy().
2595 PH/23 POSIX allows open() to be a macro; guard against that.
2597 PH/24 If the recipient of an error message contained an @ in the local part
2598 (suitably quoted, of course), incorrect values were put in $domain and
2599 $local_part during the evaluation of errors_copy.
2605 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2606 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2609 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2610 issue a MAIL command.
2612 PH/02 In an ACL statement such as
2614 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2616 if a client was not listed at all, or was listed with a value other than
2617 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2618 the condition was not true (as it should be), so access was not denied.
2619 The bug was that the ! inversion was incorrectly passed on to the second
2620 item. This has been fixed.
2622 PH/03 Added additional dnslists conditions == and =& which are different from
2623 = and & when the dns lookup returns more than one IP address.
2625 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2626 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2628 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2629 FSYNC, which compiles an option called disable_fsync that allows for
2630 bypassing fsync(). The documentation is heavily laced with warnings.
2632 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2634 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2635 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2636 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2637 including adding "make clean"; (3) Added -fPIC when compiling the test
2638 dynamically loaded module, to get rid of a warning.
2640 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2641 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2642 = 0s. The bug is otherwise harmless.
2644 PH/07 There was a bug in the dovecot authenticator such that the value of
2645 $auth1 could be overwritten, and so not correctly preserved, after a
2646 successful authentication. This usually meant that the value preserved by
2647 the server_setid option was incorrect.
2649 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2651 PH/09 Installed PCRE release 7.0.
2653 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2654 run for batched SMTP input. It is now run at the start of every message
2655 in the batch. While fixing this I discovered that the process information
2656 (output by running exiwhat) was not always getting set for -bs and -bS
2657 input. This is fixed, and it now also says "batched" for BSMTP.
2659 PH/11 Added control=no_pipelining.
2661 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2662 patch, slightly modified), and move the expansion of helo_data till after
2663 the connection is made in the smtp transport (so it can use these
2666 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2668 PH/14 Added log_selector = +pid.
2670 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2672 PH/16 Add ${if forany and ${if forall.
2674 PH/17 Added dsn_from option to vary the From: line in DSNs.
2676 PH/18 Flush SMTP output before performing a callout, unless control =
2677 no_callout_flush is set.
2679 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2680 was true (the default) a successful delivery failed to delete the retry
2681 item, thus causing premature timeout of the address. The bug is now
2684 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2686 PH/21 Long custom messages for fakedefer and fakereject are now split up
2687 into multiline responses in the same way that messages for "deny" and
2688 other ACL rejections are.
2690 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2691 with slight modification.
2693 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2694 draft, changing the syntax and factoring some duplicate code".
2696 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2697 for deliveries of the second and subsequent messages over the same SMTP
2700 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2701 ${reduce, with only minor "tidies".
2703 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2705 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2706 expansion side effects.
2708 PH/27 When a message times out after an over-quota error from an Exim-imposed
2709 quota, the bounce message says "mailbox is full". This message was not
2710 being given when it was a system quota that was exceeded. It now should
2713 MH/03 Made $recipients available in local_scan(). local_scan() already has
2714 better access to the recipient list through recipients_list[], but
2715 $recipients can be useful in postmaster-provided expansion strings.
2717 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2718 in the case of a MAIL command with additional options following the
2719 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2720 were accidentally chopped off.
2722 PH/29 SMTP synchronization checks are implemented when a command is read -
2723 there is a check that no more input is waiting when there shouldn't be
2724 any. However, for some commands, a delay in an ACL can mean that it is
2725 some time before the response is written. In this time, more input might
2726 arrive, invalidly. So now there are extra checks after an ACL has run for
2727 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2728 pipelining has not been advertised.
2730 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2732 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2733 returned in the SMTP response when smtp_return_error_details was false.
2734 This has been fixed.
2736 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2737 instead of the C I/O that was originally supplied, because problems were
2738 reported on Solaris.
2740 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2741 Exim which did not show up earlier: it was assuming that a call to
2742 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2743 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2744 was a macro that became an assignment, so it seemed to work. This has
2745 changed to a proper function call with a void return, hence the compile
2746 error. Exim's code has been fixed.
2748 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2751 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2753 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2755 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2756 because it turns out to be too big or there is a timeout) there is no
2757 "Completed" line in the log. When some messages of this type were
2758 selected by exigrep, they were listed as "not completed". Others were
2759 picked up by some special patterns. I have improved the selection
2760 criteria to be more general.
2762 PH/38 The host_find_failed option in the manualroute router can now be set
2763 to "ignore", to completely ignore a host whose IP address cannot be
2764 found. If all hosts are ignored, the behaviour is controlled by the new
2765 host_all_ignored option.
2767 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2768 homing or because of multiple MX records with /mx) generated more than
2769 one IP address, and the following item turned out to be the local host,
2770 all the secondary addresses of the first item were incorrectly removed
2771 from the list, along with the local host and any following hosts (which
2772 is what is supposed to happen).
2774 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2775 whoever called Exim into the -H file. In the case of the daemon it was
2776 behaving confusingly. When first started, it used values for whoever
2777 started the daemon, but after a SIGHUP it used the Exim user (because it
2778 calls itself on a restart). I have changed the code so that it now always
2781 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2782 message are rejected with the same error (e.g. no authentication or bad
2783 sender address), and a DATA command is nevertheless sent (as can happen
2784 with PIPELINING or a stupid MUA), the error message that was given to the
2785 RCPT commands is included in the rejection of the DATA command. This is
2786 intended to be helpful for MUAs that show only the final error to their
2789 PH/42 Another patch from the Sieve maintainer.
2791 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2792 Eximstats - Fixed some broken HTML links and added missing column headers
2794 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2795 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2797 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2799 PH/43 Yet another patch from the Sieve maintainer.
2801 PH/44 I found a way to check for a TCP/IP connection going away before sending
2802 the response to the final '.' that terminates a message, but only in the
2803 case where the client has not sent further data following the '.'
2804 (unfortunately, this is allowed). However, in many cases there won't be
2805 any further data because there won't be any more messages to send. A call
2806 to select() can be used: if it shows that the input is "ready", there is
2807 either input waiting, or the socket has been closed. An attempt to read
2808 the next input character can distinguish the two cases. Previously, Exim
2809 would have sent an OK response which the client would never have see.
2810 This could lead to message repetition. This fix should cure that, at
2811 least in a lot of common cases.
2813 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2814 advertised in response to EHLO.
2820 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2821 fixed by 4.65/MH/01 (is this a record?) are fixed:
2823 (i) An empty string was always treated as zero by the numeric comparison
2824 operators. This behaviour has been restored.
2826 (ii) It is documented that the numeric comparison operators always treat
2827 their arguments as decimal numbers. This was broken in that numbers
2828 starting with 0 were being interpreted as octal.
2830 While fixing these problems I realized that there was another issue that
2831 hadn't been noticed. Values of message_size_limit (both the global option
2832 and the transport option) were treated as octal if they started with 0.
2833 The documentation was vague. These values are now always treated as
2834 decimal, and I will make that clear in the documentation.
2840 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2841 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2844 MH/01 Don't check that the operands of numeric comparison operators are
2845 integers when their expansion is in "skipping" mode (fixes bug
2846 introduced by 4.64-PH/07).
2848 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2849 child addresses, Exim now panics and dies. Previously, because the count
2850 is held in a short int, deliveries were likely to be lost. As such a
2851 large number of recipients for a single message is ridiculous
2852 (performance will be very, very poor), I have chosen to impose a limit
2853 rather than extend the field.
2859 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2860 leftover -K file (the existence of which was triggered by #402).
2861 While we were at it, introduced process PID as part of the -K
2862 filename. This should rule out race conditions when creating
2865 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2866 processing considerably. Previous code took too long for large mails,
2867 triggering a timeout which in turn triggers #401.
2869 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2870 in the DK code in transports.c. sendfile() is not really portable,
2871 hence the _LINUX specificness.
2873 TF/01 In the add_headers option to the mail command in an Exim filter,
2874 there was a bug that Exim would claim a syntax error in any
2875 header after the first one which had an odd number of characters
2878 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2879 callout verification, Exim cached a "reject" for the entire domain. This
2880 is correct for most verifications, but it is not correct for a recipient
2881 verification with use_sender or use_postmaster set, because in that case
2882 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2883 case of MAIL FROM:<> rejection from other early rejections (e.g.
2884 rejection of HELO). When verifying a recipient using a non-null MAIL
2885 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2886 Whatever the result of the callout, the value of the domain cache is
2887 left unchanged (for any other kind of callout, getting as far as trying
2888 RCPT means that the domain itself is ok).
2890 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2893 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2894 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2895 session, the daemon ignores ECONNECT errors and logs others; it now
2896 ignores EPIPE as well.
2898 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2899 (quoted-printable decoding).
2901 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2902 later the small subsequent patch to fix an introduced bug.
2904 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2906 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2908 PH/08 An error is now given if message_size_limit is specified negative.
2910 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2911 to be given (somewhat) arbitrary names.
2913 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2916 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2917 miscellaneous code fixes
2919 PH/10 Added the log_reject_target ACL modifier to specify where to log
2922 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2923 hostname. This is wrong, because it relates to the incoming message (and
2924 probably the interface on which it is arriving) and not to the outgoing
2925 callout (which could be using a different interface). This has been
2926 changed to use the value of the helo_data option from the smtp transport
2927 instead - this is what is used when a message is actually being sent. If
2928 there is no remote transport (possible with a router that sets up host
2929 addresses), $smtp_active_hostname is used.
2931 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2932 tweaks were necessary in order to get it to work (see also 21 below):
2933 (a) The code assumed that strncpy() returns a negative number on buffer
2934 overflow, which isn't the case. Replaced with Exim's string_format()
2936 (b) There were several signed/unsigned issues. I just did the minimum
2937 hacking in of casts. There is scope for a larger refactoring.
2938 (c) The code used strcasecmp() which is not a standard C function.
2939 Replaced with Exim's strcmpic() function.
2940 (d) The code set only $1; it now sets $auth1 as well.
2941 (e) A simple test gave the error "authentication client didn't specify
2942 service in request". It would seem that Dovecot has changed its
2943 interface. Fortunately there's a specification; I followed it and
2944 changed what the client sends and it appears to be working now.
2946 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2949 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2950 address A is aliased to B and C, where B exists and C does not. Without
2951 -v the output is "A verified" because verification stops after a
2952 successful redirection if more than one address is generated. However,
2953 with -v the child addresses are also verified. Exim was outputting "A
2954 failed to verify" and then showing the successful verification for C,
2955 with its parentage. It now outputs "B failed to verify", showing B's
2956 parentage before showing the successful verification of C.
2958 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2959 look up a TXT record in a specific list after matching in a combined
2962 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2963 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2964 they consult the DNS. I had assumed they would set it the way they
2965 wanted; and indeed my experiments on Linux seem to show that in some
2966 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2967 To be on the safe side, however, I have now made the interface to
2968 host_find_byname() similar to host_find_bydns(), with an argument
2969 containing the DNS resolver options. The host_find_byname() function now
2970 sets these options at its start, just as host_find_bydns() does. The smtp
2971 transport options dns_qualify_single and dns_search_parents are passed to
2972 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2973 of host_find_byname() use the default settings of RES_DEFNAMES
2974 (qualify_single) but not RES_DNSRCH (search_parents).
2976 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2977 spool_read_header() do less string testing, by means of a preliminary
2978 switch on the second character of optional "-foo" lines. (This is
2979 overdue, caused by the large number of possibilities that now exist.
2980 Originally there were few.) While I was there, I also converted the
2981 str(n)cmp tests so they don't re-test the leading "-" and the first
2982 character, in the hope this might squeeze out yet more improvement.
2984 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2985 flag allowing group syntax was set by the header_syntax check but not
2986 turned off, possible causing trouble later; (2) The flag was not being
2987 set at all for the header_verify test, causing "group"-style headers to
2988 be rejected. I have now set it in this case, and also caused header_
2989 verify to ignore an empty address taken from a group. While doing this, I
2990 came across some other cases where the code for allowing group syntax
2991 while scanning a header line wasn't quite right (mostly, not resetting
2992 the flag correctly in the right place). These bugs could have caused
2993 trouble for malformed header lines. I hope it is now all correct.
2995 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2996 with the "reply" argument non-NULL. The code, however (which originally
2997 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2998 but it didn't always do it. This confused somebody who was copying the
2999 code for some other use. I have removed all the tests.
3001 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3002 feature that was used to support insecure browsers during the U.S. crypto
3003 embargo. It requires special client support, and Exim is probably the
3004 only MTA that supported it -- and would never use it because real RSA is
3005 always available. This code has been removed, because it had the bad
3006 effect of slowing Exim down by computing (never used) parameters for the
3007 RSA_EXPORT functionality.
3009 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3010 authenticator to fail if there's a tab character in the incoming data
3011 (there should never be unless someone is messing about, as it's supposed
3012 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3013 if the connection is using TLS or if the remote IP is the same as the
3014 local IP, and the "valid-client-cert option" if a client certificate has
3017 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3018 authenticators. This can be used for authorization after authentication
3019 succeeds. (In the case of plaintext, it servers for both authentication
3022 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3023 if any retry times were supplied.
3025 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3026 connection, where there is no client IP address to check. In this
3027 situation, the verify now always succeeds.
3029 PH/25 Applied John Jetmore's -Mset patch.
3031 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3033 PH/27 In a string expansion for a processed (not raw) header when multiple
3034 headers of the same name were present, leading whitespace was being
3035 removed from all of them, but trailing whitespace was being removed only
3036 from the last one. Now trailing whitespace is removed from each header
3037 before concatenation. Completely empty headers in a concatenation (as
3038 before) are ignored.
3040 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3041 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3043 PH/29 [Removed. This was a change that I later backed out, and forgot to
3044 correct the ChangeLog entry (that I had efficiently created) before
3045 committing the later change.]
3047 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3048 address errors (4xx response to RCPT) over the same connection as other
3049 messages routed to the same hosts. Such deliveries are always "forced",
3050 so retry times are not inspected. This resulted in far too many retries
3051 for the affected addresses. The effect occurred only when there were more
3052 hosts than the hosts_max_try setting in the smtp transport when it had
3053 the 4xx errors. Those hosts that it had tried were not added to the list
3054 of hosts for which the message was waiting, so if all were tried, there
3055 was no problem. Two fixes have been applied:
3057 (i) If there are any address or message errors in an SMTP delivery, none
3058 of the hosts (tried or untried) are now added to the list of hosts
3059 for which the message is waiting, so the message should not be a
3060 candidate for sending over the same connection that was used for a
3061 successful delivery of some other message. This seems entirely
3062 reasonable: after all the message is NOT "waiting for some host".
3063 This is so "obvious" that I'm not sure why it wasn't done
3064 previously. Hope I haven't missed anything, but it can't do any
3065 harm, as the worst effect is to miss an optimization.
3067 (ii) If, despite (i), such a delivery is accidentally attempted, the
3068 routing retry time is respected, so at least it doesn't keep
3069 hammering the server.
3071 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3072 in ${readsocket because some servers need this prod.
3074 PH/32 Added some extra debug output when updating a wait-xxx database.
3076 PH/33 The hint "could be header name not terminated by colon", which has been
3077 given for certain expansion errors for a long time, was not being given
3078 for the ${if def:h_colon_omitted{... case.
3080 PH/34 The spec says: "With one important exception, whenever a domain list is
3081 being scanned, $domain contains the subject domain." There was at least
3082 one case where this was not true.
3084 PH/35 The error "getsockname() failed: connection reset by peer" was being
3085 written to the panic log as well as the main log, but it isn't really
3086 panic-worthy as it just means the connection died rather early on. I have
3087 removed the panic log writing for the ECONNRESET error when getsockname()
3090 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3091 runs only) independently of the message's sender address. This meant
3092 that, if the 4xx error was in fact related to the sender, a different
3093 message to the same recipient with a different sender could confuse
3094 things. In particular, this can happen when sending to a greylisting
3095 server, but other circumstances could also provoke similar problems.
3096 I have changed the default so that the retry time for these errors is now
3097 based a combination of the sender and recipient addresses. This change
3098 can be overridden by setting address_retry_include_sender=false in the
3101 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3102 remote server are returned as part of bounce messages. This was not
3103 happening for LMTP over a pipe (the lmtp transport), but now it is the
3104 same for both kinds of LMTP.
3106 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3107 in header lines that were in fact CNAMEs. This is no longer the case.
3109 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3110 and queue runs started by the daemon processed all messages. This has
3111 been fixed so that -R and -S can now usefully be given with -q<time>.
3113 PH/40 Import PCRE release 6.7 (fixes some bugs).
3115 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3117 PH/42 Give an error if -q is specified more than once.
3119 PH/43 Renamed the variables $interface_address and $interface_port as
3120 $received_ip_address and $received_port, to make it clear that these
3121 values apply to message reception, and not to the outgoing interface when
3122 a message is delivered. (The old names remain recognized, of course.)
3124 PH/44 There was no timeout on the connect() call when using a Unix domain
3125 socket in the ${readsocket expansion. There now is.
3127 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3128 be meaningful with "accept".
3130 SC/01 Eximstats V1.43
3131 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3133 SC/02 Eximstats V1.44
3134 Use a glob alias rather than an array ref in the generated
3135 parser. This improves both readability and performance.
3137 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3138 Collect SpamAssassin and rejection statistics.
3139 Don't display local sender or destination tables unless
3140 there is data to show.
3141 Added average volumes into the top table text output.
3143 SC/04 Eximstats V1.46
3144 Collect data on the number of addresses (recipients)
3145 as well as the number of messages.
3147 SC/05 Eximstats V1.47
3148 Added 'Message too big' to the list of mail rejection
3149 reasons (thanks to Marco Gaiarin).
3151 SC/06 Eximstats V1.48
3152 Mainlog lines which have GMT offsets and are too short to
3153 have a flag are now skipped.
3155 SC/07 Eximstats V1.49 (Alain Williams)
3156 Added the -emptyok flag.
3158 SC/08 Eximstats V1.50
3159 Fixes for obtaining the IP address from reject messages.
3161 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3162 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3163 whitespace changes from 4.64-PH/27
3165 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3168 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3169 are found, allow negative numbers in numeric criteria)
3171 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3173 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3174 to match changes made in 4.64-PH/43
3176 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3178 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3179 "domain" is actually an IP address, and force a failure. This locks out
3180 those revolvers/nameservers that support "A-for-A" lookups, in
3181 contravention of the specifications.
3183 PH/48 When a host name was looked up from an IP address, and the subsequent
3184 forward lookup of the name timed out, the host name was left in
3185 $sender_host_name, contrary to the specification.
3187 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3188 restricted to single-key lookups, Exim was not diagnosing an error if
3189 * or *@ was used with a query-style lookup.
3191 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3193 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3194 long ago, but noone interested enough thought of it. Let's just say that
3195 the "1.1" means that there are some new functions that weren't there at
3196 some point in the past.
3198 PH/51 Error processing for expansion failure of helo_data from an smtp
3199 transport during callout processing was broken.
3201 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3202 tested/used via the -bh/-bhc/-bs options.
3204 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3205 bug, fixed in subsequent PCRE releases).
3207 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3208 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3210 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3216 SC/01 Use a glob alias rather than an array ref in eximstats generated
3217 parser. This improves both readability and performance.
3219 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3220 Don't display local sender or destination tables in eximstats unless
3221 there is data to show.
3222 Added average volumes into the eximstats top table text output.
3224 SC/03 Collect data on the number of addresses (recipients) as well
3225 as the number of messages in eximstats.
3227 TF/01 Correct an error in the documentation for the redirect router. Exim
3228 does (usually) call initgroups() when daemonizing.
3230 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3231 with consistent privilege compared to when running as a daemon.
3233 TF/03 Note in the spec that $authenticated_id is not set for local
3234 submissions from trusted users.
3236 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3237 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3239 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3240 by adding some example configuration directives to the default
3241 configuration file. A little bit of work is required to uncomment the
3242 directives and define how usernames and passwords are checked, but
3243 there is now a framework to start from.
3245 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3246 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3247 without this. I don't know how relevant this is to other LDAP libraries.
3249 PH/02 Add the verb name to the "unknown ACL verb" error.
3251 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3253 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3255 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3256 directory not expanded when it should be if an expanded home directory
3257 was set for the address (which is overridden by the transport).
3259 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3262 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3263 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3264 because it is too late at that time, and has no effect.
3266 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3267 security issue with \' (bugzilla #107). I could not use the
3268 PQescapeStringConn() function, because it needs a PGconn value as one of
3271 PH/08 When testing addresses using -bt, indicate those final addresses that
3272 are duplicates that would not cause an additional delivery. At least one
3273 person was confused, thinking that -bt output corresponded to deliveries.
3274 (Suppressing duplicates isn't a good idea as you lose the information
3275 about possibly different redirections that led to the duplicates.)
3277 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3278 systems where poll() doesn't work, in particular OS X.
3280 PH/10 Added more information to debugging output for retry time not reached.
3282 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3283 operations in malware.c.
3285 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3288 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3289 syslog_duplication set false, log lines that would normally be written
3290 both the the main log and to the reject log were not written to syslog at
3293 PH/14 In the default configuration, change the use of "message" in ACL warn
3294 statements to "add_header".
3296 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3297 not followed by a command (e.g. "seen endif").
3299 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3300 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3303 PH/17 Added extra conditions to the default value of delay_warning_condition
3307 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3308 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3309 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3312 The Auto-Submitted: and various List- headers are standardised, whereas I
3313 don't think Precedence: ever was.
3315 PH/18 Refactored debugging code in route_finduser() to show more information,
3316 in particular, the error code if getpwnam() issues one.
3318 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3319 This is apparently needed in addition to the PH/07 change above to avoid
3320 any possible encoding problems.
3322 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3323 but not after initializing Perl.
3325 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3326 output them only if debugging. By default they are written stderr,
3327 apparently, which is not desirable.
3329 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3332 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3335 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3337 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3338 authenticated or an ident call has been made. Suppress the default
3339 values for $authenticated_id and $authenticated_sender (but permit -oMai
3340 and -oMas) when testing with -bh.
3342 PH/24 Re-jigged the order of the tests in the default configuration so that the
3343 tests for valid domains and recipients precede the DNS black list and CSA
3344 tests, on the grounds that those ones are more expensive.
3346 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3347 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3348 This bug exists in every version of Exim that I still have, right back to
3351 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3352 However, an attempt to turn on case-sensitivity in a regex key by
3353 including (?-i) didn't work because the subject string was already
3354 lowercased, and the effects were non-intuitive. It turns out that a
3355 one-line patch can be used to allow (?-i) to work as expected.
3361 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3362 other effects) broke the use of negated acl sub-conditions.
3364 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3367 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3368 "Deny" causes Exim to reject the incoming connection with a 554 error.
3369 Unfortunately, if there is a major crisis, such as a disk failure,
3370 tcp-wrappers gives "deny", whereas what one would like would be some
3371 kind of temporary error. A kludge has been added to help with this.
3372 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3373 554 error is used if errno is still zero or contains ENOENT (which occurs
3374 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3377 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3379 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3380 errors. Otherwise a message that provokes a temporary error (when other
3381 messages do not) can cause a whole host to time out.
3383 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3384 addresses were routed directly to files or pipes from a redirect router.
3385 File deliveries just didn't batch; pipe deliveries might have suffered
3388 PH/06 A failure to get a lock for a hints database would erroneously always say
3389 "Failed to get write lock", even when it was really a read lock.
3391 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3392 of 0600. This has been changed to use the value of the lockfile_mode
3393 option (which defaults to 0600).
3395 PH/08 Applied small patch from the Sieve maintainer.
3397 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3398 folder from quota calculations, a direct delivery into this folder messed
3399 up the contents of the maildirsize file. This was because the regex was
3400 used only to exclude .Trash (or whatever) when the size of the mailbox
3401 was calculated. There was no check that a delivery was happening into an
3402 excluded directory. This bug has been fixed by ignoring all quota
3403 processing for deliveries into excluded directories.
3405 PH/10 Added the maildirfolder_create_regex option to appendfile.
3411 PH/01 The code for finding all the local interface addresses on a FreeBSD
3412 system running IPv6 was broken. This may well have applied to all BSD
3413 systems, as well as to others that have similar system calls. The broken
3414 code found IPv4 interfaces correctly, but gave incorrect values for the
3415 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3416 that it would not match correctly against @[] and not recognize the IPv6
3419 PH/02 The ipliteral router was not recognizing addresses of the form user@
3420 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3422 PH/03 Added disable_ipv6.
3424 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3425 decoded form, because it is most often used to construct To: headers
3426 lines in autoreplies, and the decoded form may well be syntactically
3427 invalid. However, $reply_address has leading white space removed, and all
3428 newlines turned into spaces so that the autoreply transport does not
3431 PH/05 If group was specified without a user on a router, and no group or user
3432 was specified on a transport, the group from the router was ignored.
3434 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3435 for visible compile-time settings that can be used to change these
3436 numbers, for those that want even more. Backwards compatibility with old
3437 spool files has been maintained. However, going back to a previous Exim
3438 release will lost any variables that are in spool files.
3440 PH/07 Two small changes when running in the test harness: increase delay when
3441 passing a TCP/IP connection to a new process, in case the original
3442 process has to generate a bounce, and remove special handling of
3443 127.0.0.2 (sic), which is no longer necessary.
3445 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3446 be the same on different OS.
3448 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3451 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3452 whether --show-vars was specified or not
3454 JJ/02 exipick: Added support for new ACL variable spool format introduced
3457 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3458 syntactically invalid From: or Reply-to: line, and a filter used this to
3459 generate an autoreply, and therefore failed to obtain an address for the
3460 autoreply, Exim could try to deliver to a non-existent relative file
3461 name, causing unrelated and misleading errors. What now happens is that
3462 it logs this as a hard delivery error, but does not attempt to create a
3465 PH/11 The exinext utility has a -C option for testing purposes, but although
3466 the given file was scanned by exinext itself; it wasn't being passed on
3467 when Exim was called.
3469 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3470 an end-of-file indication when reading a command response.
3472 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3473 compiled. In many other places in Exim, IPv6 addresses are always
3474 recognized, so I have changed this. It also means that IPv4 domain
3475 literals of the form [IPV4:n.n.n.n] are now always recognized.
3477 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3478 used if the router is not running as root, for example, when verifying at
3479 ACL time, or when using -bh. The debugging output from this situation was
3480 non-existent - all you got was a failure to exec. I have made two
3483 (a) Failures to set uid/gid, the current directory, or a process leader
3484 in a subprocess such as that created by queryprogram now generate
3485 suitable debugging output when -d is set.
3487 (b) The queryprogram router detects when it is not running as root,
3488 outputs suitable debugging information if -d is set, and then runs
3489 the subprocess without attempting to change uid/gid.
3491 PH/15 Minor change to Makefile for building test_host (undocumented testing
3494 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3495 additional section of a DNS packet that returns MX or SRV records.
3496 Instead, it always explicitly searches for A/AAAA records. This avoids
3497 major problems that occur when a DNS server includes only records of one
3498 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3499 fixed another bug: if SRV records were looked up and the corresponding
3500 address records were *not* found in the additional section, the port
3501 values from the SRV records were lost.
3503 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3504 using the correct key (the original address) when searching the retry
3505 rules in order to find which one to use for generating the retry hint.
3507 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3508 adding the default one. Similarly, if it contains a Reply-To: header, the
3509 errors_reply_to option, if set, is not used.
3511 PH/19 When calculating a retry time, Exim used to measure the "time since
3512 failure" by looking at the "first failed" field in the retry record. Now
3513 it does not use this if it is later than than the arrival time of the
3514 message. Instead it uses the arrival time. This makes for better
3515 behaviour in cases where some deliveries succeed, thus re-setting the
3516 "first failed" field. An example is a quota failure for a huge message
3517 when small messages continue to be delivered. Without this change, the
3518 "time since failure" will always be short, possible causing more frequent
3519 delivery attempts for the huge message than are intended.
3520 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3522 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3523 $1, $2, $3) because the numerical variables can be reset during some
3524 expansion items (e.g. "match"), thereby losing the authentication data.
3526 PH/21 Make -bV show the size of off_t variables so that the test suite can
3527 decide whether to run tests for quotas > 2G.
3529 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3530 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3531 filecount value is greater than 2G or if a quota value is greater than 2G
3532 on a system where the size of off_t is not greater than 4, a panic error
3535 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3536 never match. The debug and -bh output now contains an explicit error
3537 message indicating a malformed IPv4 address or mask.
3539 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3540 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3541 PH/23 above applies.
3543 PH/25 Do not write to syslog when running in the test harness. The only
3544 occasion when this arises is a failure to open the main or panic logs
3545 (for which there is an explicit test).
3547 PH/26 Added the /no_tell option to "control=freeze".
3549 PH/27 If a host name lookup failed very early in a connection, for example, if
3550 the IP address matched host_lookup and the reverse lookup yielded a name
3551 that did not have a forward lookup, an error message of the form "no IP
3552 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3553 could be logged. Now it outputs the IP address instead of "NULL".