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 OpenSSL: With debug enabled output keying information sufficient, server
12 side, to decode a TLS 1.3 packet capture.
14 JH/02 OpenSSL: suppress the sending of (stateful) TLS1.3 session tickets.
15 Previously the default library behaviour applied, sending two, each in
18 JH/03 Debug output for ACL now gives the config file name and line number for
21 JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
23 JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
29 JH/01 Remove code calling the customisable local_scan function, unless a new
30 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
32 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
33 non-signal-safe functions being used.
35 JH/03 Bug 2269: When presented with a received message having a stupidly large
36 number of DKIM-Signature headers, disable DKIM verification to avoid
37 a resource-consumption attack. The limit is set at twenty.
39 JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
40 report of oldest_pass in ${authres } in consequence, and separate out
41 some descriptions of reasons for verification fail.
43 JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
44 files in the spool were present and unlocked. A queue-runner could spot
45 them, resulting in a duplicate delivery. Fix that by doing the unlock
46 after the unlink. Investigation by Tim Stewart. Take the opportunity to
47 add more error-checking on spoolfile handling while that code is being
50 PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
51 No known attacks, no CVE, this is defensive hardening.
53 JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
54 a queue-runner could start a delivery while other operations were ongoing.
55 Cutthrough delivery was a common victim, resulting in duplicate delivery.
56 Found and investigated by Tim Stewart. Fix by using the open message data
57 file handle rather than opening another, and not locally closing it (which
58 releases a lock) for that case, while creating the temporary .eml format
59 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
61 JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
62 $sender_verify_failure/$recipient_verify_failure to "random".
64 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
67 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
68 Previously this would segfault.
70 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
73 JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
74 like zero, since the resolver should be doing this for us, But we need one
75 as a CNAME but no MX presence gets the CNAME returned; we need to check
76 that doesn't point to an MX to declare it "no MX returned" rather than
77 "error, loop". A new main option is added so the older capability of
78 following some limited number of chain links is maintained.
80 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
82 JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
83 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
84 now-deprecated earlier definitions used only specified the range up to TLS
85 1.2 (in the older-version library docs).
87 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
89 JH/15 Rework TLS client-side context management. Stop using a global, and
90 explicitly pass a context around. This enables future use of TLS for
91 connections to service-daemons (eg. malware scanning) while a client smtp
92 connection is using TLS; with cutthrough connections this is quite likely.
94 JH/16 Fix ARC verification to do AS checks in reverse order.
96 JH/17 Support a "tls" option on the ${readsocket } expansion item.
98 JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
99 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
100 Previously the "utf8" would be re-prepended for every additional message.
102 JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
103 Previously thery were accepted, resulting in issues when attempting to
104 forward messages to a non-supporting MTA.
106 PP/02 Let -n work with printing macros too, not just options.
108 JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
109 one parent address was copied, and bogus data was used at delivery-logging
110 time. Either a crash (after delivery) or bogus log data could result.
111 Discovery and analysis by Tim Stewart.
113 PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
114 Previously if the string ended mid-character, we did not insert the
115 promised '?' replacement.
117 PP/04 Documentation: current string operators work on bytes, not codepoints.
119 JH/21 Change as many as possible of the global flags into one-bit bitfields; these
120 should pack well giving a smaller memory footprint so better caching and
121 therefore performance. Group the declarations where this can't be done so
122 that the byte-sized flag variables are not interspersed among pointer
123 variables, giving a better chance of good packing by the compiler.
125 JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
126 non-null, to avoid issues with sites running BATV. Previously reports were
127 sent with an empty envelope sender so looked like bounces.
129 JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
130 The ignore_error flag wasn't being returned from the filter subprocess so
131 was not set for later routers. Investigation and fix by Matthias Kurz.
133 JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
134 and a msg:complete for the whole, when a message is manually removed using
135 -Mrm. Developement by Matthias Kurz, hacked on by JH.
137 JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
138 a "Gnu special" function, asprintf() in the DB utility binary builds; I
139 hope that is portable enough.
141 JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
142 requiring a known-CA anchor certificate; make it now rely entirely on the
143 TLSA as an anchor. Checking the name on the leaf cert against the name
144 on the A-record for the host is still done for TA (but not for EE mode).
146 JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
147 included in delivery lines for non-proxied connections, when compiled with
148 SUPPORT_SOCKS and running with proxy logging enabled.
150 JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
151 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
152 move the existing event to fire before the normal logging of message
153 failure so that custom logging is bracketed by normal logging.
155 JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
156 msg:fail:internal event. Developement by Matthias Kurz.
158 JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
159 far too small for todays use of crypto signatures stored there. Go all
160 the way to the max DNS message size of 64kB, even though this might be
161 overmuch for IOT constrained device use.
163 JH/31 Fix a bad use of a copy function, which could be used to pointlessly
164 copy a string over itself. The library routine is documented as not
165 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
167 JH/32 For main options check_spool_space and check_inode_space, where the
168 platform supports 64b integers, support more than the previous 2^31 kB
169 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
170 the previous G, M, k.
172 JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
173 $authenticated_fail_id variable on authentication failure. Previously
176 JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
177 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
178 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
179 GNUTLS_SEC_PARAM_MEDIUM.
181 JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
182 side. Previously we would continue as if no SNI had been received.
184 JH/36 Harden the handling of string-lists. When a list consisted of a sole
185 "<" character, which should be a list-separator specification, we walked
186 off past the nul-terimation.
188 JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
189 causes) even when the retry time is not yet met. Previously they were
190 not, meaning that when (say) an account was over-quota and temp-rejecting,
191 and multiple senders' messages were queued, only one sender would get
192 notified on each configured delay_warning cycle.
194 JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
196 JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
197 cipher-suites, an error can be left on the stack even for a succeeding
198 accept; this results in impossible error messages when a later operation
201 AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
202 return error codes indicating retry. Under TLS1.3 this becomes required.
204 JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
205 it only wrote the new authenticators, resulting in a lack of tracking of
206 peer changes of ESMTP extensions until the next cache flush.
208 JH/41 Fix the loop reading a message header line to check for integer overflow,
209 and more-often against header_maxsize. Previously a crafted message could
210 induce a crash of the recive process; now the message is cleanly rejected.
212 JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
213 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
219 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
220 When redis_servers is set to a list of > 1 element, and the Redis servers
221 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
222 case of MOVED into a DEFER case instead, thus moving the query onto the
223 next server in the list. For a cluster of N elements, all N servers must
224 be defined in redis_servers.
226 GF/02 Catch and remove uninitialized value warning in exiqsumm
227 Check for existence of @ARGV before looking at $ARGV[0]
229 JH/01 Replace the store_release() internal interface with store_newblock(),
230 which internalises the check required to safely use the old one, plus
231 the allocate and data copy operations duplicated in both (!) of the
232 extant use locations.
234 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
235 modifier. This matches the restriction on the commandline.
237 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
238 Previously only the last row was returned.
240 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
241 we assumed that tags in the header were well-formed, and parsed the
242 element content after inspecting only the first char of the tag.
243 Assumptions at that stage could crash the receive process on malformed
246 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
247 While running the DKIM ACL we operate on the Permanent memory pool so that
248 variables created with "set" persist to the DATA ACL. Also (at any time)
249 DNS lookups that fail create cache records using the Permanent pool. But
250 expansions release any allocations made on the current pool - so a dnsdb
251 lookup expansion done in the DKIM ACL releases the memory used for the
252 DNS negative-cache, and bad things result. Solution is to switch to the
253 Main pool for expansions.
254 While we're in that code, add checks on the DNS cache during store_reset,
255 active in the testsuite.
256 Problem spotted, and debugging aided, by Wolfgang Breyha.
258 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
259 When none of the hosts presented to a transport match an already-open
260 connection, close it and proceed with the list. Previously we would
261 queue the message. Spotted by Lena with Yahoo, probably involving
264 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
265 Previously a spurious "250 OK id=" response was appended to the proper
268 JH/08 The "support for" informational output now, which built with Content
269 Scanning support, has a line for the malware scanner interfaces compiled
270 in. Interface can be individually included or not at build time.
272 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
273 by the template makefile "src/EDITME". The "STREAM" support for an older
274 ClamAV interface method is removed.
276 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
277 rows affected is given instead).
279 JH/11 The runtime Berkeley DB library version is now additionally output by
280 "exim -d -bV". Previously only the compile-time version was shown.
282 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
283 SMTP connection. Previously, when one had more receipients than the
284 first, an abortive onward connection was made. Move to full support for
285 multiple onward connections in sequence, handling cutthrough connection
286 for all multi-message initiating connections.
288 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
289 routers. Previously, a multi-recipient message would fail to match the
290 onward-connection opened for the first recipient, and cause its closure.
292 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
293 a timeout on read on a GnuTLS initiating connection, resulting in the
294 initiating connection being dropped. This mattered most when the callout
295 was marked defer_ok. Fix to keep the two timeout-detection methods
298 JH/15 Relax results from ACL control request to enable cutthrough, in
299 unsupported situations, from error to silently (except under debug)
300 ignoring. This covers use with PRDR, frozen messages, queue-only and
303 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
305 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
306 metadata, resulting in a crash in free().
308 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
309 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
310 Broken also in d185889f4, with init system revamp.
312 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
313 Previously we abruptly closed the connection after reading a malware-
314 found indication; now we go on to read the "scan ok" response line,
317 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
318 ACL. Previously, a crash would result.
320 JH/19 Speed up macro lookups during configuration file read, by skipping non-
321 macro text after a replacement (previously it was only once per line) and
322 by skipping builtin macros when searching for an uppercase lead character.
324 JH/20 DANE support moved from Experimental to mainline. The Makefile control
325 for the build is renamed.
327 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
328 was allocated for every new TLS startup, meaning one per message. Fix
329 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
331 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
332 reported the original. Fix to report (as far as possible) the ACL
333 result replacing the original.
335 JH/23 Fix memory leak during multi-message connections using STARTTLS under
336 OpenSSL. Certificate information is loaded for every new TLS startup,
337 and the resources needed to be freed.
339 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
341 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
344 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
345 DATA response info to the (existing) per-recipient response info for
346 the "C=" log element. It can have useful tracking info from the
347 destination system. Patch from Simon Arlott.
349 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
350 length value. Previously this would segfault.
352 HS/02 Support Avast multiline protoocol, this allows passing flags to
353 newer versions of the scanner.
355 JH/28 Ensure that variables possibly set during message acceptance are marked
356 dead before release of memory in the daemon loop. This stops complaints
357 about them when the debug_store option is enabled. Discovered specifically
358 for sender_rate_period, but applies to a whole set of variables.
359 Do the same for the queue-runner and queue-list loops, for variables set
360 from spool message files. Do the same for the SMTP per-message loop, for
361 certain variables indirectly set in ACL operations.
363 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
364 as a multi-recipient message from a mailinglist manager). The coding had
365 an arbitrary cutoff number of characters while checking for more input;
366 enforced by writing a NUL into the buffer. This corrupted long / fast
367 input. The problem was exposed more widely when more pipelineing of SMTP
368 responses was introduced, and one Exim system was feeding another.
369 The symptom is log complaints of SMTP syntax error (NUL chars) on the
370 receiving system, and refused recipients seen by the sending system
371 (propating to people being dropped from mailing lists).
372 Discovered and pinpointed by David Carter.
374 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
375 replaced by the ${authresults } expansion.
377 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
379 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
380 allows proper process termination in container environments.
382 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
383 Previously the "final dot" had a newline after it; ensure it is CR,LF.
385 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
386 and "err_perm", deprecated since 4.83 when the RFC-defined words
387 "temperror" and "permerror" were introduced.
389 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
390 transport-filters or DKIM-signing. The restriction was lost in the
391 consolidation of verify-callout and delivery SMTP handling.
392 Extend the restriction to also cover ARC-signing.
394 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
395 in defer=pass mode supply a 450 to the initiator. Previously the message
398 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
399 tls_require_ciphers is used as before.
401 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
402 "pass_unscanned". Only tmpfails from the scanner are written to
403 the paniclog, as they may require admin intervention (permission
404 denied, license issues). Other scanner errors (like decompression
405 bombs) do not cause a paniclog entry.
407 JH/36 Fix reinitialisation of DKIM logging variable between messages.
408 Previously it was possible to log spurious information in receive log
411 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
412 triggered odd behaviour from Outlook Express clients.
414 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
417 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
418 since the IETF WG has not yet settled on that versus the original
419 "bare" representation.
421 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
422 Previously the millisecond value corrupted the output.
423 Fix also for syslog_pid=no and log_selector +pid, for which the pid
424 corrupted the output.
430 JH/01 Rework error string handling in TLS interface so that the caller in
431 more cases is responsible for logging. This permits library-sourced
432 string to be attached to addresses during delivery, and collapses
433 pairs of long lines into single ones.
435 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
436 during configuration. Wildcards are allowed and expanded.
438 JH/02 Rework error string handling in DKIM to pass more info back to callers.
439 This permits better logging.
441 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
442 do not close it down and have the child transport start it up again on
443 the passed-on TCP connection. Instead, proxy the child (and any
444 subsequent ones) for TLS via a unix-domain socket channel. Logging is
445 affected: the continued delivery log lines do not have any DNSSEC, TLS
446 Certificate or OCSP information. TLS cipher information is still logged.
448 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
449 identical IP addresses on different listening ports. Will also affect
452 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
453 add noisy ifdef guards to special-case this sillyness.
454 Patch from Bernd Kuhls.
456 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
457 than 255 are no longer allowed.
459 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
460 Disable the session-cache too, which might reduce our load. Since we
461 currrectly use a new context for every connection, both as server and
462 client, there is no benefit for these.
463 GnuTLS appears to not support tickets server-side by default (we don't
464 call gnutls_session_ticket_enable_server()) but client side is enabled
465 by default on recent versions (3.1.3 +) unless the PFS priority string
468 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
469 <https://reproducible-builds.org/specs/source-date-epoch/>.
471 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
472 the check for any unsuccessful recipients did not notice the limit, and
473 erroneously found still-pending ones.
475 JH/08 Pipeline CHUNKING command and data together, on kernels that support
476 MSG_MORE. Only in-clear (not on TLS connections).
478 JH/09 Avoid using a temporary file during transport using dkim. Unless a
479 transport-filter is involved we can buffer the headers in memory for
480 creating the signature, and read the spool data file once for the
481 signature and again for transmission.
483 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
484 4.77 as the kernel support then wasn't solid, having issues in 64bit
485 mode. Now, it's been long enough. Add support for FreeBSD also.
487 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
488 case where the routing stage had gathered several addresses to send to
489 a host before calling the transport for the first, we previously failed
490 to close down TLS in the old transport process before passing the TCP
491 connection to the new process. The new one sent a STARTTLS command
492 which naturally failed, giving a failed delivery and bloating the retry
493 database. Investigation and fix prototype from Wolfgang Breyha.
495 JH/12 Fix check on SMTP command input synchronisation. Previously there were
496 false-negatives in the check that the sender had not preempted a response
497 or prompt from Exim (running as a server), due to that code's lack of
498 awareness of the SMTP input buffering.
500 PP/04 Add commandline_checks_require_admin option.
501 Exim drops privileges sanely, various checks such as -be aren't a
502 security problem, as long as you trust local users with access to their
503 own account. When invoked by services which pass untrusted data to
504 Exim, this might be an issue. Set this option in main configuration
505 AND make fixes to the calling application, such as using `--` to stop
508 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
509 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
510 responses to those, into a single TLS record each way (this usually means
511 a single packet). As a side issue, smtp_enforce_sync now works on TLS
514 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
515 affects you only if you're dancing at the edge of the param size limits.
516 If you are, and this message makes sense to you, then: raise the
517 configured limit or use OpenSSL 1.1. Nothing we can do for older
520 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
521 cmdline element to get the documented default one. Previously it was
524 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
525 are unsuable for non-message-specific reasons - eg. connection timeout,
526 banner-time rejection.
528 JH/16 Fix logging of delivery remote port, when specified by router, under
531 PP/06 Repair manualroute's ability to take options in any order, even if one
532 is the name of a transport.
535 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
537 JH/17 Change the list-building routines interface to use the expanding-string
538 triplet model, for better allocation and copying behaviour.
540 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
541 Previously it was constructed the first time a possibly-matching string
542 was met in the configuration file input during startup; now it is done
545 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
546 compatible one, to avoid the (poorly documented) possibility of a config
547 file in the working directory redirecting the DB files, possibly correpting
548 some existing file. CVE-2017-10140 assigned for BDB.
550 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
551 cache-hot. Previously, although the result was properly cached, the
552 initial verify call returned a defer.
554 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
555 the main verify for receipient in uncached-mode.
557 JH/22 Retire historical build files to an "unsupported" subdir. These are
558 defined as "ones for which we have no current evidence of testing".
560 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
561 if present. Previously it was ignored.
563 JH/24 Start using specified-initialisers in C structure init coding. This is
564 a C99 feature (it's 2017, so now considered safe).
566 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
567 if was a fixed-sized field and bitmask ops via macros; it is now more
570 PP/07 GitHub PR 56: Apply MariaDB build fix.
571 Patch provided by Jaroslav Škarvada.
573 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
574 during Coverity cleanups [4.87 JH/47]
575 Diagnosis and fix provided by Michael Fischer v. Mollard.
577 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
578 the right size to place the terminating semicolon on its own folded
579 line, the header hash was calculated to an incorrect value thanks to
580 the (relaxed) space the fold became.
582 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
583 and confused the parent.
585 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
586 which could crash as a result. This could lead to undeliverable messages.
588 JH/28 Logging: "next input sent too soon" now shows where input was truncated
591 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
592 matters on fast-turnover and PID-randomising systems, which were getting
593 out-of-order delivery.
595 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
596 a possibly-overlapping copy. The symptom was that "Remote host closed
597 connection in response to HELO" was logged instead of the actual 4xx
600 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
601 Previously only that bufferd was discarded, resulting in SYMTP command
604 JH/32 DKIM: when a message has multiple signatures matching an identity given
605 in dkim_verify_signers, run the dkim acl once for each. Previously only
606 one run was done. Bug 2189.
608 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
609 "panic the current process" to "deliberately defer". The panic log is
610 still written with the problem list name; the mail and reject logs now
611 get a temp-reject line for the message that was being handled, saying
612 something like "domains check lookup or other defer". The SMTP 451
613 message is still "Temporary local problem".
615 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
616 A crafted sequence of BDAT commands could result in in-use memory beeing
617 freed. CVE-2017-16943.
619 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
620 from SMTP input. Previously it was always done; now only done for DATA
621 and not BDAT commands. CVE-2017-16944.
623 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
624 to the message (such as an overlong header line). Previously this was
625 not done and we did not exit BDAT mode. Followon from the previous item
626 though a different problem.
632 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
633 than -2003 did; needs libidn2 in addition to libidn.
635 JH/02 The path option on a pipe transport is now expanded before use.
637 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
638 Patch provided by "Björn", documentation fix added too.
640 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
641 missing a wire-to-host endian conversion.
643 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
644 close after a BDAT command line could be taken as a following command,
645 giving a synch failure. Fix by only checking for synch immediately
646 before acknowledging the chunk.
648 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
649 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
650 macro. Patches provided by Josh Soref.
652 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
653 Previously we did not; the RFC seems ambiguous and VRFY is not listed
654 by IANA as a service extension. However, John Klensin suggests that we
657 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
658 the dkim code may be unix-mode line endings rather than smtp wire-format
659 CRLF, so prepend a CR to any bare LF.
661 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
662 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
664 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
665 the first were themselves being wrongly included in the feed into dkim
666 processing; with most chunk sizes in use this resulted in an incorrect
667 body hash calculated value.
669 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
670 DKIM signature block, for verification. Although advised against by
671 standards it is specifically not ruled illegal.
673 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
675 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
676 missing a body hash (the bh= tag).
678 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
679 It seems that HAProxy sends the Proxy Protocol information in clear and
680 only then does a TLS startup, so do the same.
682 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
683 TCP connections (such as for Spamd) unless the daemon successfully set
684 Fast Open mode on its listening sockets. This fixes breakage seen on
685 too-old kernels or those not configured for Fast Open, at the cost of
686 requiring both directions being enabled for TFO, and TFO never being used
687 by non-daemon-related Exim processes.
689 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
690 endings, at least on the first header line. Try to canonify any that get
691 past that check, despite the cost.
693 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
694 now limited to an arbitrary five deep, while parsing addresses with the
695 strip_excess_angle_brackets option enabled.
697 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
698 instead leave the unprompted TLS handshake in socket buffer for the
699 TLS library to consume.
701 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
703 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
705 JH/16 Drop variables when they go out of scope. Memory management drops a whole
706 region in one operation, for speed, and this leaves assigned pointers
707 dangling. Add checks run only under the testsuite which checks all
708 variables at a store-reset and panics on a dangling pointer; add code
709 explicitly nulling out all the variables discovered. Fixes one known
710 bug: a transport crash, where a dangling pointer for $sending_ip_address
711 originally assigned in a verify callout, is re-used.
713 PP/06 Drop '.' from @INC in various Perl scripts.
715 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
717 PP/08 Reduce a number of compilation warnings under clang; building with
718 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
719 should be warning-free.
721 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
723 HS/01 Fix portability problems introduced by PP/08 for platforms where
724 realloc(NULL) is not equivalent to malloc() [SunOS et al].
726 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
727 chunk. This allows us to accept broken chunked messages. We need a more
728 general solution here.
730 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
731 already-broken messages in the queue.
733 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
735 JH/19 Fix reference counting bug in routing-generated-address tracking.
741 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
742 supports it and a size is available (ie. the sending peer gave us one).
744 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
745 years of being deprecated). The replacements are the ACLs
746 acl_smtp_mime and acl_not_smtp_mime.
748 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
749 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
750 or even an in-clear connection were permitted. Now, if the host lookup
751 was dnssec and dane was requested then the host is only used if the
752 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
753 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
754 if one fails this test.
755 This means that a poorly-configured remote DNS will make it incommunicado;
756 but it protects against a DNS-interception attack on it.
758 JH/04 Bug 1810: make continued-use of an open smtp transport connection
759 non-noisy when a race steals the message being considered.
761 JH/05 If main configuration option tls_certificate is unset, generate a
762 self-signed certificate for inbound TLS connections.
764 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
765 in rewrites and routers.
767 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
768 and logged a warning sing 4.83; now they are a configuration file error.
770 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
771 (lacking @domain). Apply the same qualification processing as RCPT.
773 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
775 JH/10 Support ${sha256:} applied to a string (as well as the previous
778 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
779 a cutthrough deliver is pending, as we always want to make a connection.
780 This also avoids re-routing the message when later placing the cutthrough
781 connection after a verify cache hit.
782 Do not update it with the verify result either.
784 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
785 when routing results in more than one destination address.
787 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
788 signing (which inhibits the cutthrough capability). Previously only
789 the presence of an option was tested; now an expansion evaluating as
790 empty is permissible (obviously it should depend only on data available
791 when the cutthrough connection is made).
793 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
794 the relevant preceding SMTP command did not note the pipelining mode.
796 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
797 Previously they were not counted.
799 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
800 as one having no matching records. Previously we deferred the message
801 that needed the lookup.
803 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
804 distinguished as "(=".
806 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
807 for missing MX records. Previously it only worked for missing A records.
809 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
811 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
812 after the data-go-ahead and data-ack. Patch from Jason Betts.
814 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
815 even for a "none" policy. Patch from Tony Meyer.
817 JH/22 Fix continued use of a connection for further deliveries. If a port was
818 specified by a router, it must also match for the delivery to be
821 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
822 When one of the recipients of a message was unsuitable for the connection
823 (has no matching addresses), we lost track of needing to mark it
824 deferred. As a result mail would be lost.
826 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
828 JH/25 Decoding ACL controls is now done using a binary search; the source code
829 takes up less space and should be simpler to maintain. Merge the ACL
830 condition decode tables also, with similar effect.
832 JH/26 Fix problem with one_time used on a redirect router which returned the
833 parent address unchanged. A retry would see the parent address marked as
834 delivered, so not attempt the (identical) child. As a result mail would
837 JH/27 Fix a possible security hole, wherein a process operating with the Exim
838 UID can gain a root shell. Credit to http://www.halfdog.net/ for
839 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
842 JH/28 Enable {spool,log} filesystem space and inode checks as default.
843 Main config options check_{log,spool}_{inodes,space} are now
844 100 inodes, 10MB unless set otherwise in the configuration.
846 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
847 Previously it only applied to the main-section connection policy
850 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
852 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
853 by me. Added RFC7919 DH primes as an alternative.
855 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
856 are not in the system include path.
858 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
859 GnuTLS, when a session startup failed (eg because the client disconnected)
860 Exim did stdio operations after fclose. This was exposed by a recent
861 change which nulled out the file handle after the fclose.
863 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
864 signed directly by the cert-signing cert, rather than an intermediate
865 OCSP-signing cert. This is the model used by LetsEncrypt.
867 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
869 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
870 an incoming connection.
872 HS/02 Bug 1802: Do not half-close the connection after sending a request
875 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
876 fallback to "prime256v1".
878 JH/34 SECURITY: Use proper copy of DATA command in error message.
879 Could leak key material. Remotely exploitable. CVE-2016-9963.
885 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
886 and 3.4.4 - once the server is enabled to respond to an OCSP request
887 it does even when not requested, resulting in a stapling non-aware
888 client dropping the TLS connection.
890 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
891 support variable-length bit vectors. No functional change.
893 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
894 The I= interface field on outgoing lines is now after the H= remote
895 host field, same as incoming lines. There is a separate
896 outgoing_interface log selector which allows you to disable the
899 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
900 If not running log_selector +smtp_connection the mainlog would be held
901 open indefinitely after a "too many connections" event, including to a
902 deleted file after a log rotate. Leave the per net connection logging
903 leaving it open for efficiency as that will be quickly detected by the
904 check on the next write.
906 HS/01 Bug 1671: Fix post transport crash.
907 Processing the wait-<transport> messages could crash the delivery
908 process if the message IDs didn't exist for some reason. When
909 using 'split_spool_directory=yes' the construction of the spool
910 file name failed already, exposing the same netto behaviour.
912 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
913 mime_regex ACL conditions.
915 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
916 to DSN fail messages (bounces): remote IP, remote greeting, remote response
917 to HELO, local diagnostic string.
919 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
920 log line to debug. Even when configured with a tls authenticator many
921 client connections are expected to not authenticate in this way, so
922 an authenticate fail is not an error.
924 HS/02 Add the Exim version string to the process info. This way exiwhat
925 gives some more detail about the running daemon.
927 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
928 matter for fast-change records such as DNSBLs.
930 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
931 retry record, even if constant. There may be multiple transports with
932 different interface settings and the retry behaviour needs to be kept
935 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
937 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
939 JH/10 Bug 840: fix log_defer_output option of pipe transport
941 JH/11 Bug 830: use same host for all RCPTS of a message, even under
942 hosts_randomize. This matters a lot when combined with mua_wrapper.
944 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
945 ${quote_pgsql:<string>} operator.
947 JH/13 Bug 1708: avoid misaligned access in cached lookup.
949 JH/14 Change header file name for freeradius-client. Relevant if compiling
950 with Radius support; from the Gentoo tree and checked under Fedora.
952 JH/15 Bug 1712: Introduce $prdr_requested flag variable
954 JH/16 Bug 1714: Permit an empty string as expansion result for transport
955 option transport_filter, meaning no filtering.
957 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
959 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
960 defaults to "*" (all hosts). The variable is now available when not built
961 with TLS, default unset, mainly to enable keeping the testsuite sane.
962 If a server certificate is not supplied (via tls_certificate) an error is
963 logged, and clients will find TLS connections fail on startup. Presumably
964 they will retry in-clear.
965 Packagers of Exim are strongly encouraged to create a server certificate
966 at installation time.
968 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
969 with the $config_file variable.
971 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
972 in transport context, after the attempt, and per-recipient. The latter type
973 is per host attempted. The event data is the error message, and the errno
974 information encodes the lookup type (A vs. MX) used for the (first) host,
975 and the trailing two digits of the smtp 4xx response.
977 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
978 to write to mainlog (or rejectlog, paniclog) in the window between file
979 creation and permissions/ownership being changed. Particularly affects
980 installations where exicyclog is run as root, rather than exim user;
981 result is that the running daemon panics and dies.
983 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
985 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
986 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
987 "pri" and "weight". Note that the previous implicit priority given by the
988 list order is no longer honoured.
990 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
993 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
994 by defining SUPPORT_SOCKS.
996 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
997 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
998 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
999 variables are renamed to proxy_{local,external}_{address,port}.
1001 JH/27 Move Internationalisation support from Experimental to mainline, enabled
1002 for a build by defining SUPPORT_I18N
1004 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1005 of the query string, and make ${quote_redis:} do that quoting.
1007 JH/29 Move Events support from Experimental to mainline, enabled by default
1008 and removable for a build by defining DISABLE_EVENT.
1010 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1012 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1013 cached by the daemon.
1015 JH/32 Move Redis support from Experimental to mainline, enabled for a build
1016 by defining LOOKUP_REDIS. The libhiredis library is required.
1018 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1019 keys are given for lookup.
1021 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1022 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
1023 only supported when built with TLS support. The PolarSSL SHA routines
1024 are still used when the TLS library is too old for convenient support.
1026 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1027 openssl_options), for security. OpenSSL forces this from version 1.1.0
1028 server-side so match that on older versions.
1030 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
1031 allocation for $value could be released as the expansion processing
1032 concluded, but leaving the global pointer active for it.
1034 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1035 and to use the domains and local_parts ACL conditions.
1037 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1038 incorrectly not doubled on cutthrough transmission, hence seen as a
1039 body-termination at the receiving system - resulting in truncated mails.
1040 Commonly the sender saw a TCP-level error, and retransmitted the message
1041 via the normal store-and-forward channel. This could result in duplicates
1042 received - but deduplicating mailstores were liable to retain only the
1043 initial truncated version.
1045 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
1047 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1049 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1050 we're in there, support oversigning also; bug 1309.
1052 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1054 HS/04 Add support for keep_environment and add_environment options.
1056 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1057 either intentional arithmetic overflow during PRNG, or testing config-
1060 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1061 delivery resulted in actual delivery. Cancel cutthrough before DATA
1064 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1065 rejects a recipient: pass the reject to the originator.
1067 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1068 Many were false-positives and ignorable, but it's worth fixing the
1071 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1072 for the new environment-manipulation done at startup. Move the routines
1073 from being local to tls.c to being global via the os.c file.
1075 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1076 an extract embedded as result-arg for a map, the first arg for extract
1077 is unavailable so we cannot tell if this is a numbered or keyed
1078 extraction. Accept either.
1084 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1087 JH/02 The smtp transport option "multi_domain" is now expanded.
1089 JH/03 The smtp transport now requests PRDR by default, if the server offers
1092 JH/04 Certificate name checking on server certificates, when exim is a client,
1093 is now done by default. The transport option tls_verify_cert_hostnames
1094 can be used to disable this per-host. The build option
1095 EXPERIMENTAL_CERTNAMES is withdrawn.
1097 JH/05 The value of the tls_verify_certificates smtp transport and main options
1098 default to the word "system" to access the system default CA bundle.
1099 For GnuTLS, only version 3.0.20 or later.
1101 JH/06 Verification of the server certificate for a TLS connection is now tried
1102 (but not required) by default. The verification status is now logged by
1103 default, for both outbound TLS and client-certificate supplying inbound
1106 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1109 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1110 Status Notification (bounce) messages are now MIME format per RFC 3464.
1111 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1112 under the control of the dsn_advertise_hosts option, and routers may
1113 have a dsn_lasthop option.
1115 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1116 default, modifiable by a malware= option. The list separator for
1117 the options can now be changed in the usual way. Bug 68.
1119 JH/10 The smtp_receive_timeout main option is now expanded before use.
1121 JH/11 The incoming_interface log option now also enables logging of the
1122 local interface on delivery outgoing connections.
1124 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1125 if the interface and destination host and port all match.
1127 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1130 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1131 Patch from Andrew Lewis.
1133 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1134 now supports optional time-restrictions, weighting, and priority
1135 modifiers per server. Patch originally by <rommer@active.by>.
1137 JH/16 The spamd_address main option now supports a mixed list of local
1138 and remote servers. Remote servers can be IPv6 addresses, and
1139 specify a port-range.
1141 JH/17 Bug 68: The spamd_address main option now supports an optional
1142 timeout value per server.
1144 JH/18 Bug 1581: Router and transport options headers_add/remove can
1145 now have the list separator specified.
1147 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1150 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1153 JH/21 Support for the A6 type of dns record is withdrawn.
1155 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1156 rather than the verbs used.
1158 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1159 from 255 to 1024 chars.
1161 JH/24 Verification callouts now attempt to use TLS by default.
1163 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1164 are generic router options now. The defaults didn't change.
1166 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1167 Original patch from Alexander Shikoff, worked over by JH.
1169 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1170 files if ZCAT_COMMAND is not executable.
1172 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1174 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1176 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1177 Normally benign, it bites when the pair was led to by a CNAME;
1178 modern usage is to not canonicalize the domain to a CNAME target
1179 (and we were inconsistent anyway for A-only vs AAAA+A).
1181 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1183 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1184 when evaluating $sender_host_dnssec.
1186 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1187 $sender_helo_dnssec variable.
1189 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1191 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1193 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1195 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1196 documented as working, but never had. Support all but $spam_report.
1198 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1199 added for tls authenticator.
1201 HS/03 Add perl_taintmode main config option
1207 TL/01 When running the test suite, the README says that variables such as
1208 no_msglog_check are global and can be placed anywhere in a specific
1209 test's script, however it was observed that placement needed to be near
1210 the beginning for it to behave that way. Changed the runtest perl
1211 script to read through the entire script once to detect and set these
1212 variables, reset to the beginning of the script, and then run through
1213 the script parsing/test process like normal.
1215 TL/02 The BSD's have an arc4random API. One of the functions to induce
1216 adding randomness was arc4random_stir(), but it has been removed in
1217 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1218 function when detected.
1220 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1221 cause callback expansion.
1223 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1224 syntax errors in an expansion can be treated as a string instead of
1225 logging or causing an error, due to the internal use of bool_lax
1226 instead of bool when processing it.
1228 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1229 server certificates when making smtp deliveries.
1231 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1233 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1235 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1237 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1238 Merged patch from Sebastian Wiedenroth.
1240 JH/05 Fix results-pipe from transport process. Several recipients, combined
1241 with certificate use, exposed issues where response data items split
1242 over buffer boundaries were not parsed properly. This eventually
1243 resulted in duplicates being sent. This issue only became common enough
1244 to notice due to the introduction of connection certificate information,
1245 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1247 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1248 size buffer was used, resulting in syntax errors when an expansion
1251 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1252 version 3.3.6 or later.
1254 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1255 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1256 both become "event_action", the variables become $event_name, $event_data
1257 and $event_defer_errno. There is a new variable $verify_mode, usable in
1258 routers, transports and related events. The tls:cert event is now also
1259 raised for inbound connections, if the main configuration event_action
1262 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1263 early OCSP support, but no stapling (appears to be less than 1.0.0).
1265 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1266 server certificate names available under the smtp transport option
1267 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1270 JH/10 Time-related extraction expansions from certificates now use the main
1271 option "timezone" setting for output formatting, and are consistent
1272 between OpenSSL and GnuTLS compilations. Bug 1541.
1274 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1275 encoded parameter in the incoming message. Bug 1558.
1277 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1278 include certificate info, eximon was claiming there were spoolfile
1281 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1283 JH/14 Log delivery-related information more consistently, using the sequence
1284 "H=<name> [<ip>]" wherever possible.
1286 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1287 are problematic for Debian distribution, omit them from the release
1290 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1292 JH/16 Fix string representation of time values on 64bit time_t architectures.
1295 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1296 output list separator was used.
1301 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1302 checkers that were complaining about end of non-void function with no
1305 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1306 This was a regression introduced in 4.83 by another bugfix.
1308 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1310 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1311 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1317 TF/01 Correctly close the server side of TLS when forking for delivery.
1319 When a message was received over SMTP with TLS, Exim failed to clear up
1320 the incoming connection properly after forking off the child process to
1321 deliver the message. In some situations the subsequent outgoing
1322 delivery connection happened to have the same fd number as the incoming
1323 connection previously had. Exim would try to use TLS and fail, logging
1324 a "Bad file descriptor" error.
1326 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1327 utilities have not been installed.
1329 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1330 temporary space as the ACL may create new global variables.
1332 TL/01 LDAP support uses per connection or global context settings, depending
1333 upon the detected version of the libraries at build time.
1335 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1336 to extract and use the src ip:port in logging and expansions as if it
1337 were a direct connection from the outside internet. PPv2 support was
1338 updated based on HAProxy spec change in May 2014.
1340 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1342 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1343 Properly escape header and check for NULL return.
1345 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1348 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1350 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1351 characters in header names, implemented as a verify condition.
1352 Contributed by Michael Fischer v. Mollard.
1354 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1355 results permerror and temperror. Previous values are deprecated but
1356 still accepted. In a future release, err_perm and err_temp will be
1357 completely removed, which will be a backward incompatibility if the
1358 ACL tests for either of these two old results. Patch contributed by
1359 user bes-internal on the mailing list.
1361 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1363 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1364 selectors, in both main and reject logs.
1366 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1369 JH/07 Add malware type "sock" for talking to simple daemon.
1371 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1373 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1374 routers/transports under cutthrough routing.
1376 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1377 numbers. Touch up "bool" conditional to keep the same definition.
1379 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1381 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1383 JH/12 Expand items in router/transport headers_add or headers_remove lists
1384 individually rather than the list as a whole. Bug 1452.
1386 Required for reasonable handling of multiple headers_ options when
1387 they may be empty; requires that headers_remove items with embedded
1388 colons must have them doubled (or the list-separator changed).
1390 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1391 view the policy declared in the DMARC record. Currently, $dmarc_status
1392 is a combined value of both the record presence and the result of the
1395 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1397 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1398 dnslookup router and the smtp transport (applying to the forward
1401 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1402 of ldap servers used for a specific lookup. Patch provided by Heiko
1405 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1406 New variable $lookup_dnssec_authenticated for observability.
1408 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1409 Patch submitted by Lars Timman.
1411 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1413 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1414 Requires trusted mode and valid format message id, aborts otherwise.
1415 Patch contributed by Heiko Schlichting.
1417 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1418 certextract with support for various fields. Bug 1358.
1420 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1421 is requested by default, modifiable by smtp transport option
1424 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1425 operate on certificate variables to give certificate fingerprints
1426 Also new ${sha256:cert_variable}.
1428 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1430 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1431 Christian Aistleitner.
1433 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1435 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1436 file. Patch from Wolfgang Breyha.
1438 JH/25 Expand the coverage of the delivery $host and $host_address to
1439 client authenticators run in verify callout. Bug 1476.
1441 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1442 align with daemon_smtp_ports. Bug 72.
1444 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1445 support and error reporting did not work properly.
1447 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1448 and is readable. Patch from Andrew Colin Kissa.
1450 TL/14 Enhance documentation of ${run expansion and how it parses the
1451 commandline after expansion, particularly in the case when an
1452 unquoted variable expansion results in an empty value.
1454 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1456 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1457 by renaming away from it. Addresses GH issue 15, reported by
1460 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1462 TL/15 SECURITY: prevent double expansion in math comparison functions
1463 (can expand unsanitized data). Not remotely exploitable.
1470 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1472 PP/02 Make -n do something, by making it not do something.
1473 When combined with -bP, the name of an option is not output.
1475 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1478 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1479 $sender_host_name and config options to manage this, and basic check
1482 PP/05 DSCP support for outbound connections and control modifier for inbound.
1484 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1485 (Only plugin which currently uses this is kerberos4, which nobody should
1486 be using, but we should make it available and other future plugins might
1487 conceivably use it, even though it would break NAT; stuff *should* be
1488 using channel bindings instead).
1490 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1491 name; added for Sendmail compatibility; requires admin caller.
1492 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1493 just ignore it); requires trusted caller.
1494 Also parse but ignore: -Ac -Am -X<logfile>
1497 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1499 TL/02 Add +smtp_confirmation as a default logging option.
1501 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1502 Patch by Magnus Holmgren from 2007-02-20.
1504 TL/04 Bugzilla 1281 - Spec typo.
1505 Bugzilla 1283 - Spec typo.
1506 Bugzilla 1290 - Spec grammar fixes.
1508 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1510 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1512 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1513 mailing list by by Dmitry Isaikin.
1515 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1517 JH/02 Support "G" suffix to numbers in ${if comparisons.
1519 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1521 NM/01 Bugzilla 1197 - Spec typo
1522 Bugzilla 1196 - Spec examples corrections
1524 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1526 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1527 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1530 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1531 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1533 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1534 "acl {{name}{arg}...}", and optional args on acl condition
1537 JH/05 Permit multiple router/transport headers_add/remove lines.
1539 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1541 JH/07 Avoid using a waiting database for a single-message-only transport.
1542 Performance patch from Paul Fisher. Bugzilla 1262.
1544 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1547 JH/09 Add $headers_added variable, with content from use of ACL modifier
1548 add_header (but not yet added to the message). Bugzilla 199.
1550 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1551 Pulled from Bugzilla 817 by Wolfgang Breyha.
1553 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1555 (nb: this is the same fix as in Exim 4.80.1)
1557 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1560 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1563 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1565 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1566 advertise SMTP AUTH mechanism to us, instead of a generic
1567 protocol violation error. Also, make Exim more robust to bad
1568 data from the Dovecot auth socket.
1570 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1572 When a queue runner is handling a message, Exim first routes the
1573 recipient addresses, during which it prunes them based on the retry
1574 hints database. After that it attempts to deliver the message to
1575 any remaining recipients. It then updates the hints database using
1578 So if a recipient address works intermittently, it can get repeatedly
1579 deferred at routing time. The retry hints record remains fresh so the
1580 address never reaches the final cutoff time.
1582 This is a fairly common occurrence when a user is bumping up against
1583 their storage quota. Exim had some logic in its local delivery code
1584 to deal with this. However it did not apply to per-recipient defers
1585 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1587 This change adds a proper retry rule check during routing so that the
1588 final cutoff time is checked against the message's age. We only do
1589 this check if there is an address retry record and there is not a
1590 domain retry record; this implies that previous attempts to handle
1591 the address had the retry_use_local_parts option turned on. We use
1592 this as an approximation for the destination being like a local
1593 delivery, as in LMTP.
1595 I suspect this new check makes the old local delivery cutoff check
1596 redundant, but I have not verified this so I left the code in place.
1598 TF/02 Correct gecos expansion when From: is a prefix of the username.
1600 Test 0254 submits a message to Exim with the header
1604 When I ran the test suite under the user fanf2, Exim expanded
1605 the header to contain my full name, whereas it should have added
1606 a Resent-Sender: header. It erroneously treats any prefix of the
1607 username as equal to the username.
1609 This change corrects that bug.
1611 GF/01 DCC debug and logging tidyup
1612 Error conditions log to paniclog rather than rejectlog.
1613 Debug lines prefixed by "DCC: " to remove any ambiguity.
1615 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1617 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1618 Bug spotted by Jeremy Harris; was flawed since initial commit.
1619 Would have resulted in OCSP responses post-SNI triggering an Exim
1620 NULL dereference and crash.
1622 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1624 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1625 Bug detection, analysis and fix by Samuel Thibault.
1626 Bugzilla 1331, Debian bug #698092.
1628 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1630 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1631 Server implementation by Todd Lyons, client by JH.
1632 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1633 config variable "prdr_enable" controls whether the server
1634 advertises the facility. If the client requests PRDR a new
1635 acl_data_smtp_prdr ACL is called once for each recipient, after
1636 the body content is received and before the acl_smtp_data ACL.
1637 The client is controlled by both of: a hosts_try_prdr option
1638 on the smtp transport, and the server advertisement.
1639 Default client logging of deliveries and rejections involving
1640 PRDR are flagged with the string "PRDR".
1642 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1643 fclose(). Diagnosis by Todd Lyons.
1645 PP/17 Update configure.default to handle IPv6 localhost better.
1646 Patch by Alain Williams (plus minor tweaks).
1649 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1650 This is now consistent with GnuTLS, and is now documented: the
1651 previous undocumented portable approach to treating the option as
1652 unset was to force an expansion failure. That still works, and
1653 an empty string is now equivalent.
1655 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1656 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1657 not performing validation itself.
1659 PP/20 Added force_command boolean option to pipe transport.
1660 Patch from Nick Koston, of cPanel Inc.
1662 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1665 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1667 PP/21 Fix eximon continuous updating with timestamped log-files.
1668 Broken in a format-string cleanup in 4.80, missed when I repaired the
1669 other false fix of the same issue.
1670 Report and fix from Heiko Schlichting.
1673 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1674 Report from Prashanth Katuri.
1676 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1677 It's SecureTransport, so affects any MacOS clients which use the
1678 system-integrated TLS libraries, including email clients.
1680 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1681 using a MIME ACL for non-SMTP local injection.
1682 Report and assistance in diagnosis by Warren Baker.
1684 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1686 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1688 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1689 last id that failed so it may be referenced in subsequent ACL's.
1691 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1694 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1695 ldap library initialization, allowing self-signed CA's to be
1696 used. Also properly sets require_cert option later in code by
1697 using NULL (global ldap config) instead of ldap handle (per
1698 session). Bug diagnosis and testing by alxgomz.
1700 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1701 the src/util/ subdirectory.
1703 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1704 renamed to Transport Post Delivery Action by Jeremy Harris, as
1707 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1708 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1709 redis_servers = needs to be configured which will be used by the redis
1710 lookup. Patch from Warren Baker, of The Packet Hub.
1712 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1714 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1715 hostname or reverse DNS when processing a host list. Used suggestions
1716 from multiple comments on this bug.
1718 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1720 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1721 Missed a few lines, added it to make the runtest require no keyboard
1724 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1725 contains upper case chars. Make router use caseful_local_part.
1727 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1728 support when GnuTLS has been built with p11-kit.
1734 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1736 This, or similar/improved, will also be change PP/11 of 4.82.
1742 PP/01 Handle short writes when writing local log-files.
1743 In practice, only affects FreeBSD (8 onwards).
1744 Bugzilla 1053, with thanks to Dmitry Isaikin.
1746 NM/01 Bugzilla 949 - Documentation tweak
1748 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1751 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1753 PP/02 Implemented gsasl authenticator.
1755 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1757 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1758 `pkg-config foo` for cflags/libs.
1760 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1761 with rest of GSASL and with heimdal_gssapi.
1763 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1764 `pkg-config foo` for cflags/libs for the TLS implementation.
1766 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1767 properties get this fed in as external SSF. A number of robustness
1768 and debugging improvements to the cyrus_sasl authenticator.
1770 PP/08 cyrus_sasl server now expands the server_realm option.
1772 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1773 Patch by Jeremy Harris.
1775 PP/10 Added dbmjz lookup type.
1777 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1779 PP/12 MAIL args handles TAB as well as SP, for better interop with
1780 non-compliant senders.
1781 Analysis and variant patch by Todd Lyons.
1783 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1784 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1785 Patch from Dirk Mueller <dmueller@suse.com>
1787 PP/13 tls_peerdn now print-escaped for spool files.
1788 Observed some $tls_peerdn in wild which contained \n, which resulted
1789 in spool file corruption.
1791 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1792 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1793 or write after TLS renegotiation, which otherwise led to messages
1796 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1797 as a tracking header (ie: a signed header comes before the signature).
1798 Patch from Wolfgang Breyha.
1800 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1801 comma-sep list; embedded commas doubled.
1803 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1805 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1807 Report and patch from Dmitry Banschikov.
1809 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1810 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1811 failures. We appear to now support TLS1.1+ with Exim.
1813 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1814 lets Exim select keys and certificates based upon TLS SNI from client.
1815 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1816 before an outbound SMTP session. New log_selector, +tls_sni.
1818 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1819 NULL dereference. Report and patch from Alun Jones.
1821 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1822 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1823 Not seeing resolver debug output on NetBSD, but suspect this is a
1824 resolver implementation change.
1826 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1827 Left warnings. Added "eximon gdb" invocation mode.
1829 PP/21 Defaulting "accept_8bitmime" to true, not false.
1831 PP/22 Added -bw for inetd wait mode support.
1833 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1834 locate the relevant includes and libraries. Made this the default.
1836 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1837 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1839 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1840 This may cause build issues on older platforms.
1842 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1843 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1844 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1845 Added SNI support via GnuTLS too.
1846 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1848 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1850 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1851 Applied second patch from Janne, implementing suggestion to default
1852 multiple-strings-in-record handling to match SPF spec.
1854 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1856 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1857 read-only, out of scope).
1858 Patch from Wolfgang Breyha, report from Stuart Northfield.
1860 PP/29 Fix three issues highlighted by clang analyser static analysis.
1861 Only crash-plausible issue would require the Cambridge-specific
1862 iplookup router and a misconfiguration.
1863 Report from Marcin Mirosław.
1865 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1867 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1868 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1869 As part of this, removing so much warning spew let me fix some minor
1870 real issues in debug logging.
1872 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1873 assignment on my part. Fixed.
1875 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1876 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1877 Janne Snabb (who went above and beyond: thank you).
1879 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1880 string otherwise requires a connection and a bunch more work and it's
1881 relatively easy to get wrong. Should also expose TLS library linkage
1884 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1885 64-bit ${eval} (JH/03).
1887 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1888 GNU libc to support some of the 64-bit stuff, should not lead to
1889 conflicts. Defined before os.h is pulled in, so if a given platform
1890 needs to override this, it can.
1892 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1893 protection layer was required, which is not implemented.
1894 Bugzilla 1254, patch from Wolfgang Breyha.
1896 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1897 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1898 tls_dhparam take prime identifiers. Also unbreak combination of
1899 OpenSSL+DH_params+TLSSNI.
1901 PP/39 Disable SSLv2 by default in OpenSSL support.
1907 PP/01 Solaris build fix for Oracle's LDAP libraries.
1908 Bugzilla 1109, patch from Stephen Usher.
1910 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1912 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1915 TF/02 Fix a couple more cases where we did not log the error message
1916 when unlink() failed. See also change 4.74-TF/03.
1918 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1919 lock up or crash if it happened to be inside a call to libc when it
1920 got a SIGUSR1 from exiwhat.
1922 The SIGUSR1 handler appends the current process status to the process
1923 log which is later printed by exiwhat. It used to use the general
1924 purpose logging code to do this, but several functions it calls are
1925 not safe for signals.
1927 The new output code in the SIGUSR1 handler is specific to the process
1928 log, and simple enough that it's easy to inspect for signal safety.
1929 Removing some special cases also simplifies the general logging code.
1930 Removing the spurious timestamps from the process log simplifies
1933 TF/04 Improved ratelimit ACL condition.
1935 The /noupdate option has been deprecated in favour of /readonly which
1936 has clearer semantics. The /leaky, /strict, and /readonly update modes
1937 are mutually exclusive. The update mode is no longer included in the
1938 database key; it just determines when the database is updated. (This
1939 means that when you upgrade Exim will forget old rate measurements.)
1941 Exim now checks that the per_* options are used with an update mode that
1942 makes sense for the current ACL. For example, when Exim is processing a
1943 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1944 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1945 must specify per_mail/readonly. If you omit the update mode it defaults to
1946 /leaky where that makes sense (as before) or /readonly where required.
1948 The /noupdate option is now undocumented but still supported for
1949 backwards compatibility. It is equivalent to /readonly except that in
1950 ACLs where /readonly is required you may specify /leaky/noupdate or
1951 /strict/noupdate which are treated the same as /readonly.
1953 A useful new feature is the /count= option. This is a generalization
1954 of the per_byte option, so that you can measure the throughput of other
1955 aggregate values. For example, the per_byte option is now equivalent
1956 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1958 The per_rcpt option has been generalized using the /count= mechanism
1959 (though it's more complicated than the per_byte equivalence). When it is
1960 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1961 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1962 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1963 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1964 Note that using per_rcpt with a non-readonly update mode in more than
1965 one ACL will cause the recipients to be double-counted. (The per_mail
1966 and per_byte options don't have this problem.)
1968 The handling of very low rates has changed slightly. If the computed rate
1969 is less than the event's count (usually one) then this event is the first
1970 after a long gap. In this case the rate is set to the same as this event's
1971 count, so that the first message of a spam run is counted properly.
1973 The major new feature is a mechanism for counting the rate of unique
1974 events. The new per_addr option counts the number of different
1975 recipients that someone has sent messages to in the last time period. It
1976 behaves like per_rcpt if all the recipient addresses are different, but
1977 duplicate recipient addresses do not increase the measured rate. Like
1978 the /count= option this is a general mechanism, so the per_addr option
1979 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1980 example, measure the rate that a client uses different sender addresses
1981 with the options per_mail/unique=$sender_address. There are further
1982 details in the main documentation.
1984 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1986 TF/06 Removed a few PCRE remnants.
1988 TF/07 Automatically extract Exim's version number from tags in the git
1989 repository when doing development or release builds.
1991 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1992 Bugzilla 879. Patch from Paul Fisher.
1994 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1995 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1998 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2000 PP/05 Variable $av_failed, true if the AV scanner deferred.
2001 Bugzilla 1078. Patch from John Horne.
2003 PP/06 Stop make process more reliably on build failure.
2004 Bugzilla 1087. Patch from Heiko Schlittermann.
2006 PP/07 Make maildir_use_size_file an _expandable_ boolean.
2007 Bugzilla 1089. Patch from Heiko Schlittermann.
2009 PP/08 Handle ${run} returning more data than OS pipe buffer size.
2010 Bugzilla 1131. Patch from Holger Weiß.
2012 PP/09 Handle IPv6 addresses with SPF.
2013 Bugzilla 860. Patch from Wolfgang Breyha.
2015 PP/10 GnuTLS: support TLS 1.2 & 1.1.
2017 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2020 PP/11 match_* no longer expand right-hand-side by default.
2021 New compile-time build option, EXPAND_LISTMATCH_RHS.
2022 New expansion conditions, "inlist", "inlisti".
2024 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2026 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
2028 PP/14 fix log_write() format string regression from TF/03.
2029 Bugzilla 1152. Patch from Dmitry Isaikin.
2035 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2037 PP/02 Harmonised TLS library version reporting; only show if debugging.
2038 Layout now matches that introduced for other libraries in 4.74 PP/03.
2040 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2042 PP/04 New "dns_use_edns0" global option.
2044 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2047 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2048 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
2050 TK/01 Updated PolarSSL code to 0.14.2.
2051 Bugzilla 1097. Patch from Andreas Metzler.
2053 PP/07 Catch divide-by-zero in ${eval:...}.
2054 Fixes bugzilla 1102.
2056 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2059 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2060 format-string attack -- SECURITY: remote arbitrary code execution.
2062 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2063 time unintentionally subject to list matching rules, letting the header
2064 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2065 arbitrary string expansion). This allowed for information disclosure.
2067 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2068 INT_MIN/-1 -- value coerced to INT_MAX.
2074 NM/01 Workaround for PCRE version dependency in version reporting
2077 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2078 This fixes portability to compilers other than gcc, notably
2079 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2081 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2082 makefiles for portability to HP-UX and POSIX correctness.
2084 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2085 Also via indented variable definition in the Makefile.
2086 (Debugging by Oliver Heesakkers).
2088 PP/02 Restore caching of spamd results with expanded spamd_address.
2089 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2091 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2092 Improves build reliability. Fix from: Frank Elsner
2094 NM/02 Fix wide character breakage in the rfc2047 coding
2095 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2097 NM/03 Allow underscore in dnslist lookups
2098 Fixes bug 1026. Patch from Graeme Fowler
2100 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2101 Code patches from Adam Ciarcinski of NetBSD.
2103 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2106 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2107 is logged, to avoid truncation. Patch from John Horne.
2109 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2110 Patch from Jakob Hirsch.
2112 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2113 SQL string expansion failure details.
2114 Patch from Andrey Oktyabrski.
2116 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2117 Patch from Simon Arlott.
2119 PP/09 New lookups functionality failed to compile on old gcc which rejects
2120 extern declarations in function scope.
2121 Patch from Oliver Fleischmann
2123 PP/10 Use sig_atomic_t for flags set from signal handlers.
2124 Check getgroups() return and improve debugging.
2125 Fixed developed for diagnosis in bug 927 (which turned out to be
2128 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2129 Patch from Mark Zealey.
2131 PP/12 Bugzilla 1056: Improved spamd server selection.
2132 Patch from Mark Zealey.
2134 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2135 Based on patch from Heiko Schlittermann.
2137 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2138 Patch from Uwe Doering, sign-off by Michael Haardt.
2140 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2141 variable declaration deep within a block. Bug and patch from
2144 PP/15 lookups-Makefile IRIX compatibility coercion.
2146 PP/16 Make DISABLE_DKIM build knob functional.
2148 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2149 Patch by Simon Arlott
2151 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2152 variable argument macros. Our copy now differs from upstream.
2158 TF/01 Failure to get a lock on a hints database can have serious
2159 consequences so log it to the panic log.
2161 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2162 controlled using the smtp_confirmation log selector.
2164 TF/03 Include the error message when we fail to unlink a spool file.
2166 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2167 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2168 for maintaining out-of-tree patches for some time.
2170 PP/01 Bugzilla 139: Documentation and portability issues.
2171 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2172 Handle per-OS dynamic-module compilation flags.
2174 PP/02 Let /dev/null have normal permissions.
2175 The 4.73 fixes were a little too stringent and complained about the
2176 permissions on /dev/null. Exempt it from some checks.
2177 Reported by Andreas M. Kirchwitz.
2179 PP/03 Report version information for many libraries, including
2180 Exim version information for dynamically loaded libraries. Created
2181 version.h, now support a version extension string for distributors
2182 who patch heavily. Dynamic module ABI change.
2184 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2185 privilege escalation vulnerability whereby the Exim run-time user
2186 can cause root to append content of the attacker's choosing to
2189 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2192 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2193 If dropping privileges for untrusted macros, we disabled normal logging
2194 on the basis that it would fail; for the Exim run-time user, this is not
2195 the case, and it resulted in successful deliveries going unlogged.
2196 Fixed. Reported by Andreas Metzler.
2202 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2203 only prepend for the Resent-* case. Fixes regression introduced in
2204 Exim 4.70 by NM/22 for Bugzilla 607.
2206 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2207 increasing numbers of administrators be bitten by this.
2209 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2211 PP/03 Bugzilla 994: added openssl_options main configuration option.
2213 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2215 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2217 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2219 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2220 without a peer certificate, leading to a segfault because of an
2221 assumption that peers always have certificates. Be a little more
2222 paranoid. Problem reported by Martin Tscholak.
2224 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2225 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2226 NB: ClamAV planning to remove STREAM in "middle of 2010".
2227 CL also introduces -bmalware, various -d+acl logging additions and
2228 more caution in buffer sizes.
2230 PP/09 Implemented reverse_ip expansion operator.
2232 PP/10 Bugzilla 937: provide a "debug" ACL control.
2234 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2236 PP/12 Bugzilla 973: Implement --version.
2238 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2240 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2242 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2244 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2245 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2246 ignore trailing whitespace.
2248 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2250 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2253 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2254 Notification from Dr Andrew Aitchison.
2256 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2257 ExtendedDetectionInfo response format.
2258 Notification from John Horne.
2260 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2263 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2264 XSL and documented dependency on system catalogs, with examples of how
2267 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2270 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2271 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2272 configuration file which is writeable by the Exim user or group.
2274 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2275 of configuration files to cover files specified with the -C option if
2276 they are going to be used with root privileges, not just the default
2279 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2280 option (effectively making it always true).
2282 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2283 files to be used while preserving root privileges.
2285 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2286 that rogue child processes cannot use them.
2288 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2289 run-time user, instead of root.
2291 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2292 Exim run-time user without dropping privileges.
2294 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2295 result string, instead of calling string_vformat() twice with the same
2298 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2299 for other users. Others should always drop root privileges if they use
2300 -C on the command line, even for a whitelisted configure file.
2302 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2304 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2310 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2311 $data_path, and $header_path variables; fixed documentation bugs and
2314 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2315 exipick to access non-standard spools, including the "frozen" queue
2318 NM/01 Bugzilla 965: Support mysql stored procedures.
2319 Patch from Alain Williams
2321 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2323 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2324 Patch from Andreas Metzler
2326 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2327 Patch from Kirill Miazine
2329 NM/05 Bugzilla 671: Added umask to procmail example.
2331 JJ/03 installed exipick 20100323.0, fixing doc bug
2333 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2334 directory. Notification and patch from Dan Rosenberg.
2336 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2338 TK/02 Improve log output when DKIM signing operation fails.
2340 MH/01 Treat the transport option dkim_domain as a colon separated
2341 list, not as a single string, and sign the message with each element,
2342 omitting multiple occurences of the same signer.
2344 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2345 Bugzilla 985, 986. Patch by Simon Arlott
2347 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2348 Patch by Simon Arlott
2350 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2351 MBX locking. Notification from Dan Rosenberg.
2357 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2359 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2361 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2363 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2365 NM/04 Bugzilla 915: Flag broken perl installation during build.
2371 TK/01 Added patch by Johannes Berg that expands the main option
2372 "spamd_address" if it starts with a dollar sign.
2374 TK/02 Write list of recipients to X-Envelope-Sender header when building
2375 the mbox-format spool file for content scanning (suggested by Jakob
2378 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2379 (http://www.dcc-servers.net/) support via dccifd. Activated by
2380 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2382 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2383 by Mark Daniel Reidel <mr@df.eu>.
2385 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2386 When building exim an external PCRE library is now needed -
2387 PCRE is a system library on the majority of modern systems.
2388 See entry on PCRE_LIBS in EDITME file.
2390 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2391 conversation. Added nologin parameter to request.
2392 Patch contributed by Kirill Miazine.
2394 TF/01 Do not log submission mode rewrites if they do not change the address.
2396 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2398 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2399 log files in place. Contributed by Roberto Lima.
2401 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2403 TF/03 Bugzilla 615: When checking the local_parts router precondition
2404 after a local_part_suffix or local_part_prefix option, Exim now
2405 does not use the address's named list lookup cache, since this
2406 contains cached lookups for the whole local part.
2408 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2409 Robert Millan. Documentation is in experimental-spec.txt.
2411 TF/04 Bugzilla 668: Fix parallel build (make -j).
2413 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2415 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2416 Patch provided by Jan Srzednicki.
2418 TF/05 Leading white space used to be stripped from $spam_report which
2419 wrecked the formatting. Now it is preserved.
2421 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2422 that they are available at delivery time.
2424 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2426 TF/08 TLS error reporting now respects the incoming_interface and
2427 incoming_port log selectors.
2429 TF/09 Produce a more useful error message if an SMTP transport's hosts
2430 setting expands to an empty string.
2432 NM/06 Bugzilla 744: EXPN did not work under TLS.
2433 Patch provided by Phil Pennock.
2435 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2436 Patch provided by Richard Godbee.
2438 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2439 acl_smtp_notquit, added index entry.
2441 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2442 Patch provided by Eugene Bujak.
2444 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2445 accept(). Patch provided by Maxim Dounin.
2447 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2448 Patch provided by Phil Pennock.
2450 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2452 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2453 Patch provided by Brad "anomie" Jorsch.
2455 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2456 Patch provided by Dean Brooks.
2458 TK/05 Add native DKIM support (does not depend on external libraries).
2460 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2461 Patch provided by Graeme Fowler.
2463 NM/16 Bugzilla 851: Documentation example syntax fix.
2465 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2467 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2470 NM/19 Bugzilla 745: TLS version reporting.
2471 Patch provided by Phil Pennock.
2473 NM/20 Bugzilla 167: bool: condition support.
2474 Patch provided by Phil Pennock.
2476 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2477 clients. Patch provided by Phil Pennock.
2479 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2480 Patch provided by Brad "anomie" Jorsch.
2482 NM/23 Bugzilla 687: Fix misparses in eximstats.
2483 Patch provided by Heiko Schlittermann.
2485 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2486 Patch provided by Heiko Schlittermann.
2488 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2489 plus update to original patch.
2491 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2493 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2494 Patch provided by David Brownlee.
2496 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2498 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2500 NM/30 Bugzilla 888: TLS documentation bugfixes.
2502 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2504 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2505 Unlike the original bugzilla I have changed all shell scripts in src tree.
2507 NM/33 Bugzilla 898: Transport filter timeout fix.
2508 Patch by Todd Rinaldo.
2510 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2511 Patch by Serge Demonchaux.
2513 NM/35 Bugzilla 39: Base64 decode bug fixes.
2514 Patch by Jakob Hirsch.
2516 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2518 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2520 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2522 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2528 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2529 ALT-N's libdkim that I have put here:
2530 http://duncanthrax.net/exim-experimental/
2532 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2533 were called 'true' and it seems that C99 defines that as a reserved
2534 keyword to be used with 'bool' variable types. That means you could
2535 not include C99-style headers which use bools without triggering
2536 build errors in sieve.c.
2538 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2539 as mailq or other aliases. Changed the --help handling significantly
2540 to do whats expected. exim_usage() emits usage/help information.
2542 SC/01 Added the -bylocaldomain option to eximstats.
2544 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2546 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2548 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2554 PH/01 Another patch from the Sieve maintainer.
2556 PH/02 When an IPv6 address is converted to a string for single-key lookup
2557 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2558 dots are used instead of colons so that keys in lsearch files need not
2559 contain colons. This was done some time before quoting was made available
2560 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2561 (notated using the quote facility) so as to distinguish them from IPv4
2562 keys. This meant that lookups for IP addresses in host lists did not work
2563 for iplsearch lookups.
2565 This has been fixed by arranging for IPv6 addresses to be expressed with
2566 colons if the lookup type is iplsearch. This is not incompatible, because
2567 previously such lookups could never work.
2569 The situation is now rather anomalous, since one *can* have colons in
2570 ordinary lsearch keys. However, making the change in all cases is
2571 incompatible and would probably break a number of configurations.
2573 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2576 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2577 conversion specification without a maximum field width, thereby enabling
2578 a rogue spamd server to cause a buffer overflow. While nobody in their
2579 right mind would setup Exim to query an untrusted spamd server, an
2580 attacker that gains access to a server running spamd could potentially
2581 exploit this vulnerability to run arbitrary code as the Exim user.
2583 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2584 $primary_hostname instead of what libspf2 thinks the hosts name is.
2586 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2587 a directory entry by the name of the lookup key. Previously, if a
2588 symlink pointed to a non-existing file or a file in a directory that
2589 Exim lacked permissions to read, a lookup for a key matching that
2590 symlink would fail. Now it is enough that a matching directory entry
2591 exists, symlink or not. (Bugzilla 503.)
2593 PH/03 The body_linecount and body_zerocount variables are now exported in the
2596 PH/04 Added the $dnslist_matched variable.
2598 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2599 This means they are set thereafter only if the connection becomes
2602 PH/06 Added the client_condition to authenticators so that some can be skipped
2603 by clients under certain conditions.
2605 PH/07 The error message for a badly-placed control=no_multiline_responses left
2606 "_responses" off the end of the name.
2608 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2610 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2611 (without spaces) instead of just copying the configuration text.
2613 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2615 PH/11 Added $max_received_linelength.
2617 PH/12 Added +ignore_defer and +include_defer to host lists.
2619 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2620 way in which PCRE > 7.0 is built.
2622 PH/14 Implemented queue_only_load_latch.
2624 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2625 MAIL command. The effect was to mangle the value on 64-bit systems.
2627 PH/16 Another patch from the Sieve maintainer.
2629 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2631 PH/18 If a system quota error occurred while trying to create the file for
2632 a maildir delivery, the message "Mailbox is full" was not appended to the
2633 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2634 only to a quota excession during the actual writing of the file.
2636 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2637 characters?) which causes problems in log lines. The DN values are now
2638 passed through string_printing() before being added to log lines.
2640 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2641 and InterBase are left for another time.)
2643 PH/21 Added message_body_newlines option.
2645 PH/22 Guard against possible overflow in moan_check_errorcopy().
2647 PH/23 POSIX allows open() to be a macro; guard against that.
2649 PH/24 If the recipient of an error message contained an @ in the local part
2650 (suitably quoted, of course), incorrect values were put in $domain and
2651 $local_part during the evaluation of errors_copy.
2657 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2658 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2661 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2662 issue a MAIL command.
2664 PH/02 In an ACL statement such as
2666 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2668 if a client was not listed at all, or was listed with a value other than
2669 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2670 the condition was not true (as it should be), so access was not denied.
2671 The bug was that the ! inversion was incorrectly passed on to the second
2672 item. This has been fixed.
2674 PH/03 Added additional dnslists conditions == and =& which are different from
2675 = and & when the dns lookup returns more than one IP address.
2677 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2678 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2680 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2681 FSYNC, which compiles an option called disable_fsync that allows for
2682 bypassing fsync(). The documentation is heavily laced with warnings.
2684 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2686 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2687 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2688 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2689 including adding "make clean"; (3) Added -fPIC when compiling the test
2690 dynamically loaded module, to get rid of a warning.
2692 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2693 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2694 = 0s. The bug is otherwise harmless.
2696 PH/07 There was a bug in the dovecot authenticator such that the value of
2697 $auth1 could be overwritten, and so not correctly preserved, after a
2698 successful authentication. This usually meant that the value preserved by
2699 the server_setid option was incorrect.
2701 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2703 PH/09 Installed PCRE release 7.0.
2705 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2706 run for batched SMTP input. It is now run at the start of every message
2707 in the batch. While fixing this I discovered that the process information
2708 (output by running exiwhat) was not always getting set for -bs and -bS
2709 input. This is fixed, and it now also says "batched" for BSMTP.
2711 PH/11 Added control=no_pipelining.
2713 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2714 patch, slightly modified), and move the expansion of helo_data till after
2715 the connection is made in the smtp transport (so it can use these
2718 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2720 PH/14 Added log_selector = +pid.
2722 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2724 PH/16 Add ${if forany and ${if forall.
2726 PH/17 Added dsn_from option to vary the From: line in DSNs.
2728 PH/18 Flush SMTP output before performing a callout, unless control =
2729 no_callout_flush is set.
2731 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2732 was true (the default) a successful delivery failed to delete the retry
2733 item, thus causing premature timeout of the address. The bug is now
2736 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2738 PH/21 Long custom messages for fakedefer and fakereject are now split up
2739 into multiline responses in the same way that messages for "deny" and
2740 other ACL rejections are.
2742 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2743 with slight modification.
2745 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2746 draft, changing the syntax and factoring some duplicate code".
2748 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2749 for deliveries of the second and subsequent messages over the same SMTP
2752 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2753 ${reduce, with only minor "tidies".
2755 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2757 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2758 expansion side effects.
2760 PH/27 When a message times out after an over-quota error from an Exim-imposed
2761 quota, the bounce message says "mailbox is full". This message was not
2762 being given when it was a system quota that was exceeded. It now should
2765 MH/03 Made $recipients available in local_scan(). local_scan() already has
2766 better access to the recipient list through recipients_list[], but
2767 $recipients can be useful in postmaster-provided expansion strings.
2769 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2770 in the case of a MAIL command with additional options following the
2771 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2772 were accidentally chopped off.
2774 PH/29 SMTP synchronization checks are implemented when a command is read -
2775 there is a check that no more input is waiting when there shouldn't be
2776 any. However, for some commands, a delay in an ACL can mean that it is
2777 some time before the response is written. In this time, more input might
2778 arrive, invalidly. So now there are extra checks after an ACL has run for
2779 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2780 pipelining has not been advertised.
2782 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2784 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2785 returned in the SMTP response when smtp_return_error_details was false.
2786 This has been fixed.
2788 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2789 instead of the C I/O that was originally supplied, because problems were
2790 reported on Solaris.
2792 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2793 Exim which did not show up earlier: it was assuming that a call to
2794 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2795 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2796 was a macro that became an assignment, so it seemed to work. This has
2797 changed to a proper function call with a void return, hence the compile
2798 error. Exim's code has been fixed.
2800 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2803 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2805 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2807 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2808 because it turns out to be too big or there is a timeout) there is no
2809 "Completed" line in the log. When some messages of this type were
2810 selected by exigrep, they were listed as "not completed". Others were
2811 picked up by some special patterns. I have improved the selection
2812 criteria to be more general.
2814 PH/38 The host_find_failed option in the manualroute router can now be set
2815 to "ignore", to completely ignore a host whose IP address cannot be
2816 found. If all hosts are ignored, the behaviour is controlled by the new
2817 host_all_ignored option.
2819 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2820 homing or because of multiple MX records with /mx) generated more than
2821 one IP address, and the following item turned out to be the local host,
2822 all the secondary addresses of the first item were incorrectly removed
2823 from the list, along with the local host and any following hosts (which
2824 is what is supposed to happen).
2826 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2827 whoever called Exim into the -H file. In the case of the daemon it was
2828 behaving confusingly. When first started, it used values for whoever
2829 started the daemon, but after a SIGHUP it used the Exim user (because it
2830 calls itself on a restart). I have changed the code so that it now always
2833 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2834 message are rejected with the same error (e.g. no authentication or bad
2835 sender address), and a DATA command is nevertheless sent (as can happen
2836 with PIPELINING or a stupid MUA), the error message that was given to the
2837 RCPT commands is included in the rejection of the DATA command. This is
2838 intended to be helpful for MUAs that show only the final error to their
2841 PH/42 Another patch from the Sieve maintainer.
2843 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2844 Eximstats - Fixed some broken HTML links and added missing column headers
2846 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2847 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2849 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2851 PH/43 Yet another patch from the Sieve maintainer.
2853 PH/44 I found a way to check for a TCP/IP connection going away before sending
2854 the response to the final '.' that terminates a message, but only in the
2855 case where the client has not sent further data following the '.'
2856 (unfortunately, this is allowed). However, in many cases there won't be
2857 any further data because there won't be any more messages to send. A call
2858 to select() can be used: if it shows that the input is "ready", there is
2859 either input waiting, or the socket has been closed. An attempt to read
2860 the next input character can distinguish the two cases. Previously, Exim
2861 would have sent an OK response which the client would never have see.
2862 This could lead to message repetition. This fix should cure that, at
2863 least in a lot of common cases.
2865 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2866 advertised in response to EHLO.
2872 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2873 fixed by 4.65/MH/01 (is this a record?) are fixed:
2875 (i) An empty string was always treated as zero by the numeric comparison
2876 operators. This behaviour has been restored.
2878 (ii) It is documented that the numeric comparison operators always treat
2879 their arguments as decimal numbers. This was broken in that numbers
2880 starting with 0 were being interpreted as octal.
2882 While fixing these problems I realized that there was another issue that
2883 hadn't been noticed. Values of message_size_limit (both the global option
2884 and the transport option) were treated as octal if they started with 0.
2885 The documentation was vague. These values are now always treated as
2886 decimal, and I will make that clear in the documentation.
2892 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2893 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2896 MH/01 Don't check that the operands of numeric comparison operators are
2897 integers when their expansion is in "skipping" mode (fixes bug
2898 introduced by 4.64-PH/07).
2900 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2901 child addresses, Exim now panics and dies. Previously, because the count
2902 is held in a short int, deliveries were likely to be lost. As such a
2903 large number of recipients for a single message is ridiculous
2904 (performance will be very, very poor), I have chosen to impose a limit
2905 rather than extend the field.
2911 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2912 leftover -K file (the existence of which was triggered by #402).
2913 While we were at it, introduced process PID as part of the -K
2914 filename. This should rule out race conditions when creating
2917 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2918 processing considerably. Previous code took too long for large mails,
2919 triggering a timeout which in turn triggers #401.
2921 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2922 in the DK code in transports.c. sendfile() is not really portable,
2923 hence the _LINUX specificness.
2925 TF/01 In the add_headers option to the mail command in an Exim filter,
2926 there was a bug that Exim would claim a syntax error in any
2927 header after the first one which had an odd number of characters
2930 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2931 callout verification, Exim cached a "reject" for the entire domain. This
2932 is correct for most verifications, but it is not correct for a recipient
2933 verification with use_sender or use_postmaster set, because in that case
2934 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2935 case of MAIL FROM:<> rejection from other early rejections (e.g.
2936 rejection of HELO). When verifying a recipient using a non-null MAIL
2937 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2938 Whatever the result of the callout, the value of the domain cache is
2939 left unchanged (for any other kind of callout, getting as far as trying
2940 RCPT means that the domain itself is ok).
2942 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2945 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2946 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2947 session, the daemon ignores ECONNECT errors and logs others; it now
2948 ignores EPIPE as well.
2950 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2951 (quoted-printable decoding).
2953 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2954 later the small subsequent patch to fix an introduced bug.
2956 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2958 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2960 PH/08 An error is now given if message_size_limit is specified negative.
2962 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2963 to be given (somewhat) arbitrary names.
2965 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2968 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2969 miscellaneous code fixes
2971 PH/10 Added the log_reject_target ACL modifier to specify where to log
2974 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2975 hostname. This is wrong, because it relates to the incoming message (and
2976 probably the interface on which it is arriving) and not to the outgoing
2977 callout (which could be using a different interface). This has been
2978 changed to use the value of the helo_data option from the smtp transport
2979 instead - this is what is used when a message is actually being sent. If
2980 there is no remote transport (possible with a router that sets up host
2981 addresses), $smtp_active_hostname is used.
2983 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2984 tweaks were necessary in order to get it to work (see also 21 below):
2985 (a) The code assumed that strncpy() returns a negative number on buffer
2986 overflow, which isn't the case. Replaced with Exim's string_format()
2988 (b) There were several signed/unsigned issues. I just did the minimum
2989 hacking in of casts. There is scope for a larger refactoring.
2990 (c) The code used strcasecmp() which is not a standard C function.
2991 Replaced with Exim's strcmpic() function.
2992 (d) The code set only $1; it now sets $auth1 as well.
2993 (e) A simple test gave the error "authentication client didn't specify
2994 service in request". It would seem that Dovecot has changed its
2995 interface. Fortunately there's a specification; I followed it and
2996 changed what the client sends and it appears to be working now.
2998 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
3001 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
3002 address A is aliased to B and C, where B exists and C does not. Without
3003 -v the output is "A verified" because verification stops after a
3004 successful redirection if more than one address is generated. However,
3005 with -v the child addresses are also verified. Exim was outputting "A
3006 failed to verify" and then showing the successful verification for C,
3007 with its parentage. It now outputs "B failed to verify", showing B's
3008 parentage before showing the successful verification of C.
3010 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
3011 look up a TXT record in a specific list after matching in a combined
3014 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
3015 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
3016 they consult the DNS. I had assumed they would set it the way they
3017 wanted; and indeed my experiments on Linux seem to show that in some
3018 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
3019 To be on the safe side, however, I have now made the interface to
3020 host_find_byname() similar to host_find_bydns(), with an argument
3021 containing the DNS resolver options. The host_find_byname() function now
3022 sets these options at its start, just as host_find_bydns() does. The smtp
3023 transport options dns_qualify_single and dns_search_parents are passed to
3024 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
3025 of host_find_byname() use the default settings of RES_DEFNAMES
3026 (qualify_single) but not RES_DNSRCH (search_parents).
3028 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
3029 spool_read_header() do less string testing, by means of a preliminary
3030 switch on the second character of optional "-foo" lines. (This is
3031 overdue, caused by the large number of possibilities that now exist.
3032 Originally there were few.) While I was there, I also converted the
3033 str(n)cmp tests so they don't re-test the leading "-" and the first
3034 character, in the hope this might squeeze out yet more improvement.
3036 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
3037 flag allowing group syntax was set by the header_syntax check but not
3038 turned off, possible causing trouble later; (2) The flag was not being
3039 set at all for the header_verify test, causing "group"-style headers to
3040 be rejected. I have now set it in this case, and also caused header_
3041 verify to ignore an empty address taken from a group. While doing this, I
3042 came across some other cases where the code for allowing group syntax
3043 while scanning a header line wasn't quite right (mostly, not resetting
3044 the flag correctly in the right place). These bugs could have caused
3045 trouble for malformed header lines. I hope it is now all correct.
3047 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3048 with the "reply" argument non-NULL. The code, however (which originally
3049 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3050 but it didn't always do it. This confused somebody who was copying the
3051 code for some other use. I have removed all the tests.
3053 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3054 feature that was used to support insecure browsers during the U.S. crypto
3055 embargo. It requires special client support, and Exim is probably the
3056 only MTA that supported it -- and would never use it because real RSA is
3057 always available. This code has been removed, because it had the bad
3058 effect of slowing Exim down by computing (never used) parameters for the
3059 RSA_EXPORT functionality.
3061 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3062 authenticator to fail if there's a tab character in the incoming data
3063 (there should never be unless someone is messing about, as it's supposed
3064 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3065 if the connection is using TLS or if the remote IP is the same as the
3066 local IP, and the "valid-client-cert option" if a client certificate has
3069 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3070 authenticators. This can be used for authorization after authentication
3071 succeeds. (In the case of plaintext, it servers for both authentication
3074 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3075 if any retry times were supplied.
3077 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3078 connection, where there is no client IP address to check. In this
3079 situation, the verify now always succeeds.
3081 PH/25 Applied John Jetmore's -Mset patch.
3083 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3085 PH/27 In a string expansion for a processed (not raw) header when multiple
3086 headers of the same name were present, leading whitespace was being
3087 removed from all of them, but trailing whitespace was being removed only
3088 from the last one. Now trailing whitespace is removed from each header
3089 before concatenation. Completely empty headers in a concatenation (as
3090 before) are ignored.
3092 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3093 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3095 PH/29 [Removed. This was a change that I later backed out, and forgot to
3096 correct the ChangeLog entry (that I had efficiently created) before
3097 committing the later change.]
3099 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3100 address errors (4xx response to RCPT) over the same connection as other
3101 messages routed to the same hosts. Such deliveries are always "forced",
3102 so retry times are not inspected. This resulted in far too many retries
3103 for the affected addresses. The effect occurred only when there were more
3104 hosts than the hosts_max_try setting in the smtp transport when it had
3105 the 4xx errors. Those hosts that it had tried were not added to the list
3106 of hosts for which the message was waiting, so if all were tried, there
3107 was no problem. Two fixes have been applied:
3109 (i) If there are any address or message errors in an SMTP delivery, none
3110 of the hosts (tried or untried) are now added to the list of hosts
3111 for which the message is waiting, so the message should not be a
3112 candidate for sending over the same connection that was used for a
3113 successful delivery of some other message. This seems entirely
3114 reasonable: after all the message is NOT "waiting for some host".
3115 This is so "obvious" that I'm not sure why it wasn't done
3116 previously. Hope I haven't missed anything, but it can't do any
3117 harm, as the worst effect is to miss an optimization.
3119 (ii) If, despite (i), such a delivery is accidentally attempted, the
3120 routing retry time is respected, so at least it doesn't keep
3121 hammering the server.
3123 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3124 in ${readsocket because some servers need this prod.
3126 PH/32 Added some extra debug output when updating a wait-xxx database.
3128 PH/33 The hint "could be header name not terminated by colon", which has been
3129 given for certain expansion errors for a long time, was not being given
3130 for the ${if def:h_colon_omitted{... case.
3132 PH/34 The spec says: "With one important exception, whenever a domain list is
3133 being scanned, $domain contains the subject domain." There was at least
3134 one case where this was not true.
3136 PH/35 The error "getsockname() failed: connection reset by peer" was being
3137 written to the panic log as well as the main log, but it isn't really
3138 panic-worthy as it just means the connection died rather early on. I have
3139 removed the panic log writing for the ECONNRESET error when getsockname()
3142 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3143 runs only) independently of the message's sender address. This meant
3144 that, if the 4xx error was in fact related to the sender, a different
3145 message to the same recipient with a different sender could confuse
3146 things. In particular, this can happen when sending to a greylisting
3147 server, but other circumstances could also provoke similar problems.
3148 I have changed the default so that the retry time for these errors is now
3149 based a combination of the sender and recipient addresses. This change
3150 can be overridden by setting address_retry_include_sender=false in the
3153 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3154 remote server are returned as part of bounce messages. This was not
3155 happening for LMTP over a pipe (the lmtp transport), but now it is the
3156 same for both kinds of LMTP.
3158 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3159 in header lines that were in fact CNAMEs. This is no longer the case.
3161 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3162 and queue runs started by the daemon processed all messages. This has
3163 been fixed so that -R and -S can now usefully be given with -q<time>.
3165 PH/40 Import PCRE release 6.7 (fixes some bugs).
3167 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3169 PH/42 Give an error if -q is specified more than once.
3171 PH/43 Renamed the variables $interface_address and $interface_port as
3172 $received_ip_address and $received_port, to make it clear that these
3173 values apply to message reception, and not to the outgoing interface when
3174 a message is delivered. (The old names remain recognized, of course.)
3176 PH/44 There was no timeout on the connect() call when using a Unix domain
3177 socket in the ${readsocket expansion. There now is.
3179 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3180 be meaningful with "accept".
3182 SC/01 Eximstats V1.43
3183 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3185 SC/02 Eximstats V1.44
3186 Use a glob alias rather than an array ref in the generated
3187 parser. This improves both readability and performance.
3189 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3190 Collect SpamAssassin and rejection statistics.
3191 Don't display local sender or destination tables unless
3192 there is data to show.
3193 Added average volumes into the top table text output.
3195 SC/04 Eximstats V1.46
3196 Collect data on the number of addresses (recipients)
3197 as well as the number of messages.
3199 SC/05 Eximstats V1.47
3200 Added 'Message too big' to the list of mail rejection
3201 reasons (thanks to Marco Gaiarin).
3203 SC/06 Eximstats V1.48
3204 Mainlog lines which have GMT offsets and are too short to
3205 have a flag are now skipped.
3207 SC/07 Eximstats V1.49 (Alain Williams)
3208 Added the -emptyok flag.
3210 SC/08 Eximstats V1.50
3211 Fixes for obtaining the IP address from reject messages.
3213 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3214 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3215 whitespace changes from 4.64-PH/27
3217 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3220 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3221 are found, allow negative numbers in numeric criteria)
3223 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3225 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3226 to match changes made in 4.64-PH/43
3228 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3230 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3231 "domain" is actually an IP address, and force a failure. This locks out
3232 those revolvers/nameservers that support "A-for-A" lookups, in
3233 contravention of the specifications.
3235 PH/48 When a host name was looked up from an IP address, and the subsequent
3236 forward lookup of the name timed out, the host name was left in
3237 $sender_host_name, contrary to the specification.
3239 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3240 restricted to single-key lookups, Exim was not diagnosing an error if
3241 * or *@ was used with a query-style lookup.
3243 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3245 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3246 long ago, but noone interested enough thought of it. Let's just say that
3247 the "1.1" means that there are some new functions that weren't there at
3248 some point in the past.
3250 PH/51 Error processing for expansion failure of helo_data from an smtp
3251 transport during callout processing was broken.
3253 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3254 tested/used via the -bh/-bhc/-bs options.
3256 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3257 bug, fixed in subsequent PCRE releases).
3259 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3260 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3262 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3268 SC/01 Use a glob alias rather than an array ref in eximstats generated
3269 parser. This improves both readability and performance.
3271 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3272 Don't display local sender or destination tables in eximstats unless
3273 there is data to show.
3274 Added average volumes into the eximstats top table text output.
3276 SC/03 Collect data on the number of addresses (recipients) as well
3277 as the number of messages in eximstats.
3279 TF/01 Correct an error in the documentation for the redirect router. Exim
3280 does (usually) call initgroups() when daemonizing.
3282 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3283 with consistent privilege compared to when running as a daemon.
3285 TF/03 Note in the spec that $authenticated_id is not set for local
3286 submissions from trusted users.
3288 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3289 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3291 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3292 by adding some example configuration directives to the default
3293 configuration file. A little bit of work is required to uncomment the
3294 directives and define how usernames and passwords are checked, but
3295 there is now a framework to start from.
3297 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3298 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3299 without this. I don't know how relevant this is to other LDAP libraries.
3301 PH/02 Add the verb name to the "unknown ACL verb" error.
3303 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3305 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3307 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3308 directory not expanded when it should be if an expanded home directory
3309 was set for the address (which is overridden by the transport).
3311 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3314 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3315 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3316 because it is too late at that time, and has no effect.
3318 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3319 security issue with \' (bugzilla #107). I could not use the
3320 PQescapeStringConn() function, because it needs a PGconn value as one of
3323 PH/08 When testing addresses using -bt, indicate those final addresses that
3324 are duplicates that would not cause an additional delivery. At least one
3325 person was confused, thinking that -bt output corresponded to deliveries.
3326 (Suppressing duplicates isn't a good idea as you lose the information
3327 about possibly different redirections that led to the duplicates.)
3329 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3330 systems where poll() doesn't work, in particular OS X.
3332 PH/10 Added more information to debugging output for retry time not reached.
3334 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3335 operations in malware.c.
3337 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3340 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3341 syslog_duplication set false, log lines that would normally be written
3342 both the the main log and to the reject log were not written to syslog at
3345 PH/14 In the default configuration, change the use of "message" in ACL warn
3346 statements to "add_header".
3348 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3349 not followed by a command (e.g. "seen endif").
3351 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3352 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3355 PH/17 Added extra conditions to the default value of delay_warning_condition
3359 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3360 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3361 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3364 The Auto-Submitted: and various List- headers are standardised, whereas I
3365 don't think Precedence: ever was.
3367 PH/18 Refactored debugging code in route_finduser() to show more information,
3368 in particular, the error code if getpwnam() issues one.
3370 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3371 This is apparently needed in addition to the PH/07 change above to avoid
3372 any possible encoding problems.
3374 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3375 but not after initializing Perl.
3377 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3378 output them only if debugging. By default they are written stderr,
3379 apparently, which is not desirable.
3381 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3384 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3387 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3389 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3390 authenticated or an ident call has been made. Suppress the default
3391 values for $authenticated_id and $authenticated_sender (but permit -oMai
3392 and -oMas) when testing with -bh.
3394 PH/24 Re-jigged the order of the tests in the default configuration so that the
3395 tests for valid domains and recipients precede the DNS black list and CSA
3396 tests, on the grounds that those ones are more expensive.
3398 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3399 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3400 This bug exists in every version of Exim that I still have, right back to
3403 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3404 However, an attempt to turn on case-sensitivity in a regex key by
3405 including (?-i) didn't work because the subject string was already
3406 lowercased, and the effects were non-intuitive. It turns out that a
3407 one-line patch can be used to allow (?-i) to work as expected.
3413 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3414 other effects) broke the use of negated acl sub-conditions.
3416 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3419 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3420 "Deny" causes Exim to reject the incoming connection with a 554 error.
3421 Unfortunately, if there is a major crisis, such as a disk failure,
3422 tcp-wrappers gives "deny", whereas what one would like would be some
3423 kind of temporary error. A kludge has been added to help with this.
3424 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3425 554 error is used if errno is still zero or contains ENOENT (which occurs
3426 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3429 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3431 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3432 errors. Otherwise a message that provokes a temporary error (when other
3433 messages do not) can cause a whole host to time out.
3435 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3436 addresses were routed directly to files or pipes from a redirect router.
3437 File deliveries just didn't batch; pipe deliveries might have suffered
3440 PH/06 A failure to get a lock for a hints database would erroneously always say
3441 "Failed to get write lock", even when it was really a read lock.
3443 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3444 of 0600. This has been changed to use the value of the lockfile_mode
3445 option (which defaults to 0600).
3447 PH/08 Applied small patch from the Sieve maintainer.
3449 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3450 folder from quota calculations, a direct delivery into this folder messed
3451 up the contents of the maildirsize file. This was because the regex was
3452 used only to exclude .Trash (or whatever) when the size of the mailbox
3453 was calculated. There was no check that a delivery was happening into an
3454 excluded directory. This bug has been fixed by ignoring all quota
3455 processing for deliveries into excluded directories.
3457 PH/10 Added the maildirfolder_create_regex option to appendfile.
3463 PH/01 The code for finding all the local interface addresses on a FreeBSD
3464 system running IPv6 was broken. This may well have applied to all BSD
3465 systems, as well as to others that have similar system calls. The broken
3466 code found IPv4 interfaces correctly, but gave incorrect values for the
3467 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3468 that it would not match correctly against @[] and not recognize the IPv6
3471 PH/02 The ipliteral router was not recognizing addresses of the form user@
3472 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3474 PH/03 Added disable_ipv6.
3476 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3477 decoded form, because it is most often used to construct To: headers
3478 lines in autoreplies, and the decoded form may well be syntactically
3479 invalid. However, $reply_address has leading white space removed, and all
3480 newlines turned into spaces so that the autoreply transport does not
3483 PH/05 If group was specified without a user on a router, and no group or user
3484 was specified on a transport, the group from the router was ignored.
3486 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3487 for visible compile-time settings that can be used to change these
3488 numbers, for those that want even more. Backwards compatibility with old
3489 spool files has been maintained. However, going back to a previous Exim
3490 release will lost any variables that are in spool files.
3492 PH/07 Two small changes when running in the test harness: increase delay when
3493 passing a TCP/IP connection to a new process, in case the original
3494 process has to generate a bounce, and remove special handling of
3495 127.0.0.2 (sic), which is no longer necessary.
3497 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3498 be the same on different OS.
3500 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3503 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3504 whether --show-vars was specified or not
3506 JJ/02 exipick: Added support for new ACL variable spool format introduced
3509 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3510 syntactically invalid From: or Reply-to: line, and a filter used this to
3511 generate an autoreply, and therefore failed to obtain an address for the
3512 autoreply, Exim could try to deliver to a non-existent relative file
3513 name, causing unrelated and misleading errors. What now happens is that
3514 it logs this as a hard delivery error, but does not attempt to create a
3517 PH/11 The exinext utility has a -C option for testing purposes, but although
3518 the given file was scanned by exinext itself; it wasn't being passed on
3519 when Exim was called.
3521 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3522 an end-of-file indication when reading a command response.
3524 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3525 compiled. In many other places in Exim, IPv6 addresses are always
3526 recognized, so I have changed this. It also means that IPv4 domain
3527 literals of the form [IPV4:n.n.n.n] are now always recognized.
3529 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3530 used if the router is not running as root, for example, when verifying at
3531 ACL time, or when using -bh. The debugging output from this situation was
3532 non-existent - all you got was a failure to exec. I have made two
3535 (a) Failures to set uid/gid, the current directory, or a process leader
3536 in a subprocess such as that created by queryprogram now generate
3537 suitable debugging output when -d is set.
3539 (b) The queryprogram router detects when it is not running as root,
3540 outputs suitable debugging information if -d is set, and then runs
3541 the subprocess without attempting to change uid/gid.
3543 PH/15 Minor change to Makefile for building test_host (undocumented testing
3546 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3547 additional section of a DNS packet that returns MX or SRV records.
3548 Instead, it always explicitly searches for A/AAAA records. This avoids
3549 major problems that occur when a DNS server includes only records of one
3550 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3551 fixed another bug: if SRV records were looked up and the corresponding
3552 address records were *not* found in the additional section, the port
3553 values from the SRV records were lost.
3555 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3556 using the correct key (the original address) when searching the retry
3557 rules in order to find which one to use for generating the retry hint.
projects / exim.git / blob