Update Changelog for Bug 2351
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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.
8 Exim version 4.92
9 -----------------
11 JH/01 Remove code calling the customisable local_scan function, unless a new
12 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
14 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
15 non-signal-safe functions being used.
17 JH/03 Bug 2269: When presented with a received message having a stupidly large
18 number of DKIM-Signature headers, disable DKIM verification to avoid
19 a resource-consumption attack. The limit is set at twenty.
21 JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
22 report of oldest_pass in ${authres } in consequence, and separate out
23 some descriptions of reasons for verification fail.
25 JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
26 files in the spool were present and unlocked. A queue-runner could spot
27 them, resulting in a duplicate delivery. Fix that by doing the unlock
28 after the unlink. Investigation by Tim Stewart. Take the opportunity to
29 add more error-checking on spoolfile handling while that code is being
30 messed with.
32 PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
33 No known attacks, no CVE, this is defensive hardening.
35 JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
36 a queue-runner could start a delivery while other operations were ongoing.
37 Cutthrough delivery was a common victim, resulting in duplicate delivery.
38 Found and investigated by Tim Stewart. Fix by using the open message data
39 file handle rather than opening another, and not locally closing it (which
40 releases a lock) for that case, while creating the temporary .eml format
41 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
43 JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
44 $sender_verify_failure/$recipient_verify_failure to "random".
46 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
47 legitimate.
49 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
50 Previously this would segfault.
52 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
53 segfault.
55 JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
56 like zero, since the resolver should be doing this for us, But we need one
57 as a CNAME but no MX presence gets the CNAME returned; we need to check
58 that doesn't point to an MX to declare it "no MX returned" rather than
59 "error, loop". A new main option is added so the older capability of
60 following some limited number of chain links is maintained.
62 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
64 JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
65 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
66 now-deprecated earlier definitions used only specified the range up to TLS
67 1.2 (in the older-version library docs).
69 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
71 JH/15 Rework TLS client-side context management. Stop using a global, and
72 explicitly pass a context around. This enables future use of TLS for
73 connections to service-daemons (eg. malware scanning) while a client smtp
74 connection is using TLS; with cutthrough connections this is quite likely.
76 JH/16 Fix ARC verification to do AS checks in reverse order.
78 JH/17 Support a "tls" option on the ${readsocket } expansion item.
80 JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
81 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
82 Previously the "utf8" would be re-prepended for every additional message.
84 JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
85 Previously thery were accepted, resulting in issues when attempting to
86 forward messages to a non-supporting MTA.
88 PP/02 Let -n work with printing macros too, not just options.
90 JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
91 one parent address was copied, and bogus data was used at delivery-logging
92 time. Either a crash (after delivery) or bogus log data could result.
93 Discovery and analysis by Tim Stewart.
95 PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
96 Previously if the string ended mid-character, we did not insert the
97 promised '?' replacement.
99 PP/04 Documentation: current string operators work on bytes, not codepoints.
101 JH/21 Change as many as possible of the global flags into one-bit bitfields; these
102 should pack well giving a smaller memory footprint so better caching and
103 therefore performance. Group the declarations where this can't be done so
104 that the byte-sized flag variables are not interspersed among pointer
105 variables, giving a better chance of good packing by the compiler.
107 JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
108 non-null, to avoid issues with sites running BATV. Previously reports were
109 sent with an empty envelope sender so looked like bounces.
111 JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
112 The ignore_error flag wasn't being returned from the filter subprocess so
113 was not set for later routers. Investigation and fix by Matthias Kurz.
115 JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
116 and a msg:complete for the whole, when a message is manually removed using
117 -Mrm. Developement by Matthias Kurz, hacked on by JH.
119 JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
120 a "Gnu special" function, asprintf() in the DB utility binary builds; I
121 hope that is portable enough.
123 JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
124 requiring a known-CA anchor certificate; make it now rely entirely on the
125 TLSA as an anchor. Checking the name on the leaf cert against the name
126 on the A-record for the host is still done for TA (but not for EE mode).
128 JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
129 included in delivery lines for non-proxied connections, when compiled with
130 SUPPORT_SOCKS and running with proxy logging enabled.
132 JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
133 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
134 move the existing event to fire before the normal logging of message
135 failure so that custom logging is bracketed by normal logging.
137 JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
138 msg:fail:internal event. Developement by Matthias Kurz.
140 JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
141 far too small for todays use of crypto signatures stored there. Go all
142 the way to the max DNS message size of 64kB, even though this might be
143 overmuch for IOT constrained device use.
145 JH/31 Fix a bad use of a copy function, which could be used to pointlessly
146 copy a string over itself. The library routine is documented as not
147 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
149 JH/32 For main options check_spool_space and check_inode_space, where the
150 platform supports 64b integers, support more than the previous 2^31 kB
151 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
152 the previous G, M, k.
154 JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
155 $authenticated_fail_id variable on authentication failure. Previously
156 it was unset.
158 JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
159 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
160 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
163 JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
164 side. Previously we would continue as if no SNI had been received.
166 JH/36 Harden the handling of string-lists. When a list consisted of a sole
167 "<" character, which should be a list-separator specification, we walked
168 off past the nul-terimation.
170 JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
171 causes) even when the retry time is not yet met. Previously they were
172 not, meaning that when (say) an account was over-quota and temp-rejecting,
173 and multiple senders' messages were queued, only one sender would get
174 notified on each configured delay_warning cycle.
176 JH/01 Bug 2351: Log failures to extract envelope addresses from message headers.
179 Exim version 4.91
180 -----------------
182 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
183 When redis_servers is set to a list of > 1 element, and the Redis servers
184 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
185 case of MOVED into a DEFER case instead, thus moving the query onto the
186 next server in the list. For a cluster of N elements, all N servers must
187 be defined in redis_servers.
189 GF/02 Catch and remove uninitialized value warning in exiqsumm
190 Check for existence of @ARGV before looking at $ARGV[0]
192 JH/01 Replace the store_release() internal interface with store_newblock(),
193 which internalises the check required to safely use the old one, plus
194 the allocate and data copy operations duplicated in both (!) of the
195 extant use locations.
197 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
198 modifier. This matches the restriction on the commandline.
200 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
201 Previously only the last row was returned.
203 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
204 we assumed that tags in the header were well-formed, and parsed the
205 element content after inspecting only the first char of the tag.
206 Assumptions at that stage could crash the receive process on malformed
207 input.
209 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
210 While running the DKIM ACL we operate on the Permanent memory pool so that
211 variables created with "set" persist to the DATA ACL. Also (at any time)
212 DNS lookups that fail create cache records using the Permanent pool. But
213 expansions release any allocations made on the current pool - so a dnsdb
214 lookup expansion done in the DKIM ACL releases the memory used for the
215 DNS negative-cache, and bad things result. Solution is to switch to the
216 Main pool for expansions.
217 While we're in that code, add checks on the DNS cache during store_reset,
218 active in the testsuite.
219 Problem spotted, and debugging aided, by Wolfgang Breyha.
221 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
222 When none of the hosts presented to a transport match an already-open
223 connection, close it and proceed with the list. Previously we would
224 queue the message. Spotted by Lena with Yahoo, probably involving
225 round-robin DNS.
227 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
228 Previously a spurious "250 OK id=" response was appended to the proper
229 failure response.
231 JH/08 The "support for" informational output now, which built with Content
232 Scanning support, has a line for the malware scanner interfaces compiled
233 in. Interface can be individually included or not at build time.
235 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
236 by the template makefile "src/EDITME". The "STREAM" support for an older
237 ClamAV interface method is removed.
239 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
240 rows affected is given instead).
242 JH/11 The runtime Berkeley DB library version is now additionally output by
243 "exim -d -bV". Previously only the compile-time version was shown.
245 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
246 SMTP connection. Previously, when one had more receipients than the
247 first, an abortive onward connection was made. Move to full support for
248 multiple onward connections in sequence, handling cutthrough connection
249 for all multi-message initiating connections.
251 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
252 routers. Previously, a multi-recipient message would fail to match the
253 onward-connection opened for the first recipient, and cause its closure.
255 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
256 a timeout on read on a GnuTLS initiating connection, resulting in the
257 initiating connection being dropped. This mattered most when the callout
258 was marked defer_ok. Fix to keep the two timeout-detection methods
259 separate.
261 JH/15 Relax results from ACL control request to enable cutthrough, in
262 unsupported situations, from error to silently (except under debug)
263 ignoring. This covers use with PRDR, frozen messages, queue-only and
264 fake-reject.
266 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
268 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
269 metadata, resulting in a crash in free().
271 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
272 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
273 Broken also in d185889f4, with init system revamp.
275 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
276 Previously we abruptly closed the connection after reading a malware-
277 found indication; now we go on to read the "scan ok" response line,
278 and send a quit.
280 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
281 ACL. Previously, a crash would result.
283 JH/19 Speed up macro lookups during configuration file read, by skipping non-
284 macro text after a replacement (previously it was only once per line) and
285 by skipping builtin macros when searching for an uppercase lead character.
287 JH/20 DANE support moved from Experimental to mainline. The Makefile control
288 for the build is renamed.
290 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
291 was allocated for every new TLS startup, meaning one per message. Fix
292 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
294 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
295 reported the original. Fix to report (as far as possible) the ACL
296 result replacing the original.
298 JH/23 Fix memory leak during multi-message connections using STARTTLS under
299 OpenSSL. Certificate information is loaded for every new TLS startup,
300 and the resources needed to be freed.
302 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
304 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
305 was not propagated.
307 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
308 DATA response info to the (existing) per-recipient response info for
309 the "C=" log element. It can have useful tracking info from the
310 destination system. Patch from Simon Arlott.
312 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
313 length value. Previously this would segfault.
315 HS/02 Support Avast multiline protoocol, this allows passing flags to
316 newer versions of the scanner.
318 JH/28 Ensure that variables possibly set during message acceptance are marked
319 dead before release of memory in the daemon loop. This stops complaints
320 about them when the debug_store option is enabled. Discovered specifically
321 for sender_rate_period, but applies to a whole set of variables.
322 Do the same for the queue-runner and queue-list loops, for variables set
323 from spool message files. Do the same for the SMTP per-message loop, for
324 certain variables indirectly set in ACL operations.
326 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
327 as a multi-recipient message from a mailinglist manager). The coding had
328 an arbitrary cutoff number of characters while checking for more input;
329 enforced by writing a NUL into the buffer. This corrupted long / fast
330 input. The problem was exposed more widely when more pipelineing of SMTP
331 responses was introduced, and one Exim system was feeding another.
332 The symptom is log complaints of SMTP syntax error (NUL chars) on the
333 receiving system, and refused recipients seen by the sending system
334 (propating to people being dropped from mailing lists).
335 Discovered and pinpointed by David Carter.
337 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
338 replaced by the ${authresults } expansion.
340 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
342 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
343 allows proper process termination in container environments.
345 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
346 Previously the "final dot" had a newline after it; ensure it is CR,LF.
348 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
349 and "err_perm", deprecated since 4.83 when the RFC-defined words
350 "temperror" and "permerror" were introduced.
352 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
353 transport-filters or DKIM-signing. The restriction was lost in the
354 consolidation of verify-callout and delivery SMTP handling.
355 Extend the restriction to also cover ARC-signing.
357 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
358 in defer=pass mode supply a 450 to the initiator. Previously the message
359 would be spooled.
361 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
362 tls_require_ciphers is used as before.
364 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
365 "pass_unscanned". Only tmpfails from the scanner are written to
366 the paniclog, as they may require admin intervention (permission
367 denied, license issues). Other scanner errors (like decompression
368 bombs) do not cause a paniclog entry.
370 JH/36 Fix reinitialisation of DKIM logging variable between messages.
371 Previously it was possible to log spurious information in receive log
372 lines.
374 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
375 triggered odd behaviour from Outlook Express clients.
377 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
378 suffix list.
380 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
381 since the IETF WG has not yet settled on that versus the original
382 "bare" representation.
384 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
385 Previously the millisecond value corrupted the output.
386 Fix also for syslog_pid=no and log_selector +pid, for which the pid
387 corrupted the output.
390 Exim version 4.90
391 -----------------
393 JH/01 Rework error string handling in TLS interface so that the caller in
394 more cases is responsible for logging. This permits library-sourced
395 string to be attached to addresses during delivery, and collapses
396 pairs of long lines into single ones.
398 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
399 during configuration. Wildcards are allowed and expanded.
401 JH/02 Rework error string handling in DKIM to pass more info back to callers.
402 This permits better logging.
404 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
405 do not close it down and have the child transport start it up again on
406 the passed-on TCP connection. Instead, proxy the child (and any
407 subsequent ones) for TLS via a unix-domain socket channel. Logging is
408 affected: the continued delivery log lines do not have any DNSSEC, TLS
409 Certificate or OCSP information. TLS cipher information is still logged.
411 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
412 identical IP addresses on different listening ports. Will also affect
413 "exiwhat" output.
415 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
416 add noisy ifdef guards to special-case this sillyness.
417 Patch from Bernd Kuhls.
419 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
420 than 255 are no longer allowed.
422 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
423 Disable the session-cache too, which might reduce our load. Since we
424 currrectly use a new context for every connection, both as server and
425 client, there is no benefit for these.
426 GnuTLS appears to not support tickets server-side by default (we don't
427 call gnutls_session_ticket_enable_server()) but client side is enabled
428 by default on recent versions (3.1.3 +) unless the PFS priority string
429 is used (3.2.4 +).
431 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
432 <https://reproducible-builds.org/specs/source-date-epoch/>.
434 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
435 the check for any unsuccessful recipients did not notice the limit, and
436 erroneously found still-pending ones.
438 JH/08 Pipeline CHUNKING command and data together, on kernels that support
439 MSG_MORE. Only in-clear (not on TLS connections).
441 JH/09 Avoid using a temporary file during transport using dkim. Unless a
442 transport-filter is involved we can buffer the headers in memory for
443 creating the signature, and read the spool data file once for the
444 signature and again for transmission.
446 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
447 4.77 as the kernel support then wasn't solid, having issues in 64bit
448 mode. Now, it's been long enough. Add support for FreeBSD also.
450 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
451 case where the routing stage had gathered several addresses to send to
452 a host before calling the transport for the first, we previously failed
453 to close down TLS in the old transport process before passing the TCP
454 connection to the new process. The new one sent a STARTTLS command
455 which naturally failed, giving a failed delivery and bloating the retry
456 database. Investigation and fix prototype from Wolfgang Breyha.
458 JH/12 Fix check on SMTP command input synchronisation. Previously there were
459 false-negatives in the check that the sender had not preempted a response
460 or prompt from Exim (running as a server), due to that code's lack of
461 awareness of the SMTP input buffering.
463 PP/04 Add commandline_checks_require_admin option.
464 Exim drops privileges sanely, various checks such as -be aren't a
465 security problem, as long as you trust local users with access to their
466 own account. When invoked by services which pass untrusted data to
467 Exim, this might be an issue. Set this option in main configuration
468 AND make fixes to the calling application, such as using `--` to stop
469 processing options.
471 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
472 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
473 responses to those, into a single TLS record each way (this usually means
474 a single packet). As a side issue, smtp_enforce_sync now works on TLS
475 connections.
477 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
478 affects you only if you're dancing at the edge of the param size limits.
479 If you are, and this message makes sense to you, then: raise the
480 configured limit or use OpenSSL 1.1. Nothing we can do for older
481 versions.
483 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
484 cmdline element to get the documented default one. Previously it was
485 inaccessible.
487 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
488 are unsuable for non-message-specific reasons - eg. connection timeout,
489 banner-time rejection.
491 JH/16 Fix logging of delivery remote port, when specified by router, under
492 callout/hold.
494 PP/06 Repair manualroute's ability to take options in any order, even if one
495 is the name of a transport.
496 Fixes bug 2140.
498 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
500 JH/17 Change the list-building routines interface to use the expanding-string
501 triplet model, for better allocation and copying behaviour.
503 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
504 Previously it was constructed the first time a possibly-matching string
505 was met in the configuration file input during startup; now it is done
506 during compilation.
508 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
509 compatible one, to avoid the (poorly documented) possibility of a config
510 file in the working directory redirecting the DB files, possibly correpting
511 some existing file. CVE-2017-10140 assigned for BDB.
513 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
514 cache-hot. Previously, although the result was properly cached, the
515 initial verify call returned a defer.
517 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
518 the main verify for receipient in uncached-mode.
520 JH/22 Retire historical build files to an "unsupported" subdir. These are
521 defined as "ones for which we have no current evidence of testing".
523 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
524 if present. Previously it was ignored.
526 JH/24 Start using specified-initialisers in C structure init coding. This is
527 a C99 feature (it's 2017, so now considered safe).
529 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
530 if was a fixed-sized field and bitmask ops via macros; it is now more
531 extensible.
533 PP/07 GitHub PR 56: Apply MariaDB build fix.
534 Patch provided by Jaroslav Škarvada.
536 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
537 during Coverity cleanups [4.87 JH/47]
538 Diagnosis and fix provided by Michael Fischer v. Mollard.
540 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
541 the right size to place the terminating semicolon on its own folded
542 line, the header hash was calculated to an incorrect value thanks to
543 the (relaxed) space the fold became.
545 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
546 and confused the parent.
548 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
549 which could crash as a result. This could lead to undeliverable messages.
551 JH/28 Logging: "next input sent too soon" now shows where input was truncated
552 for log purposes.
554 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
555 matters on fast-turnover and PID-randomising systems, which were getting
556 out-of-order delivery.
558 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
559 a possibly-overlapping copy. The symptom was that "Remote host closed
560 connection in response to HELO" was logged instead of the actual 4xx
561 error for the HELO.
563 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
564 Previously only that bufferd was discarded, resulting in SYMTP command
565 desynchronisation.
567 JH/32 DKIM: when a message has multiple signatures matching an identity given
568 in dkim_verify_signers, run the dkim acl once for each. Previously only
569 one run was done. Bug 2189.
571 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
572 "panic the current process" to "deliberately defer". The panic log is
573 still written with the problem list name; the mail and reject logs now
574 get a temp-reject line for the message that was being handled, saying
575 something like "domains check lookup or other defer". The SMTP 451
576 message is still "Temporary local problem".
578 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
579 A crafted sequence of BDAT commands could result in in-use memory beeing
580 freed. CVE-2017-16943.
582 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
583 from SMTP input. Previously it was always done; now only done for DATA
584 and not BDAT commands. CVE-2017-16944.
586 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
587 to the message (such as an overlong header line). Previously this was
588 not done and we did not exit BDAT mode. Followon from the previous item
589 though a different problem.
592 Exim version 4.89
593 -----------------
595 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
596 than -2003 did; needs libidn2 in addition to libidn.
598 JH/02 The path option on a pipe transport is now expanded before use.
600 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
601 Patch provided by "Björn", documentation fix added too.
603 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
604 missing a wire-to-host endian conversion.
606 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
607 close after a BDAT command line could be taken as a following command,
608 giving a synch failure. Fix by only checking for synch immediately
609 before acknowledging the chunk.
611 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
612 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
613 macro. Patches provided by Josh Soref.
615 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
616 Previously we did not; the RFC seems ambiguous and VRFY is not listed
617 by IANA as a service extension. However, John Klensin suggests that we
618 should.
620 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
621 the dkim code may be unix-mode line endings rather than smtp wire-format
622 CRLF, so prepend a CR to any bare LF.
624 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
625 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
627 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
628 the first were themselves being wrongly included in the feed into dkim
629 processing; with most chunk sizes in use this resulted in an incorrect
630 body hash calculated value.
632 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
633 DKIM signature block, for verification. Although advised against by
634 standards it is specifically not ruled illegal.
636 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
638 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
639 missing a body hash (the bh= tag).
641 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
642 It seems that HAProxy sends the Proxy Protocol information in clear and
643 only then does a TLS startup, so do the same.
645 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
646 TCP connections (such as for Spamd) unless the daemon successfully set
647 Fast Open mode on its listening sockets. This fixes breakage seen on
648 too-old kernels or those not configured for Fast Open, at the cost of
649 requiring both directions being enabled for TFO, and TFO never being used
650 by non-daemon-related Exim processes.
652 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
653 endings, at least on the first header line. Try to canonify any that get
654 past that check, despite the cost.
656 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
657 now limited to an arbitrary five deep, while parsing addresses with the
658 strip_excess_angle_brackets option enabled.
660 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
661 instead leave the unprompted TLS handshake in socket buffer for the
662 TLS library to consume.
664 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
666 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
668 JH/16 Drop variables when they go out of scope. Memory management drops a whole
669 region in one operation, for speed, and this leaves assigned pointers
670 dangling. Add checks run only under the testsuite which checks all
671 variables at a store-reset and panics on a dangling pointer; add code
672 explicitly nulling out all the variables discovered. Fixes one known
673 bug: a transport crash, where a dangling pointer for $sending_ip_address
674 originally assigned in a verify callout, is re-used.
676 PP/06 Drop '.' from @INC in various Perl scripts.
678 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
680 PP/08 Reduce a number of compilation warnings under clang; building with
681 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
682 should be warning-free.
684 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
686 HS/01 Fix portability problems introduced by PP/08 for platforms where
687 realloc(NULL) is not equivalent to malloc() [SunOS et al].
689 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
690 chunk. This allows us to accept broken chunked messages. We need a more
691 general solution here.
693 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
694 already-broken messages in the queue.
696 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
698 JH/19 Fix reference counting bug in routing-generated-address tracking.
701 Exim version 4.88
702 -----------------
704 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
705 supports it and a size is available (ie. the sending peer gave us one).
707 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
708 years of being deprecated). The replacements are the ACLs
709 acl_smtp_mime and acl_not_smtp_mime.
711 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
712 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
713 or even an in-clear connection were permitted. Now, if the host lookup
714 was dnssec and dane was requested then the host is only used if the
715 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
716 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
717 if one fails this test.
718 This means that a poorly-configured remote DNS will make it incommunicado;
719 but it protects against a DNS-interception attack on it.
721 JH/04 Bug 1810: make continued-use of an open smtp transport connection
722 non-noisy when a race steals the message being considered.
724 JH/05 If main configuration option tls_certificate is unset, generate a
725 self-signed certificate for inbound TLS connections.
727 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
728 in rewrites and routers.
730 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
731 and logged a warning sing 4.83; now they are a configuration file error.
733 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
734 (lacking @domain). Apply the same qualification processing as RCPT.
736 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
738 JH/10 Support ${sha256:} applied to a string (as well as the previous
739 certificate).
741 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
742 a cutthrough deliver is pending, as we always want to make a connection.
743 This also avoids re-routing the message when later placing the cutthrough
744 connection after a verify cache hit.
745 Do not update it with the verify result either.
747 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
748 when routing results in more than one destination address.
750 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
751 signing (which inhibits the cutthrough capability). Previously only
752 the presence of an option was tested; now an expansion evaluating as
753 empty is permissible (obviously it should depend only on data available
754 when the cutthrough connection is made).
756 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
757 the relevant preceding SMTP command did not note the pipelining mode.
759 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
760 Previously they were not counted.
762 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
763 as one having no matching records. Previously we deferred the message
764 that needed the lookup.
766 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
767 distinguished as "(=".
769 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
770 for missing MX records. Previously it only worked for missing A records.
772 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
774 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
775 after the data-go-ahead and data-ack. Patch from Jason Betts.
777 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
778 even for a "none" policy. Patch from Tony Meyer.
780 JH/22 Fix continued use of a connection for further deliveries. If a port was
781 specified by a router, it must also match for the delivery to be
782 compatible.
784 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
785 When one of the recipients of a message was unsuitable for the connection
786 (has no matching addresses), we lost track of needing to mark it
787 deferred. As a result mail would be lost.
789 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
791 JH/25 Decoding ACL controls is now done using a binary search; the source code
792 takes up less space and should be simpler to maintain. Merge the ACL
793 condition decode tables also, with similar effect.
795 JH/26 Fix problem with one_time used on a redirect router which returned the
796 parent address unchanged. A retry would see the parent address marked as
797 delivered, so not attempt the (identical) child. As a result mail would
798 be lost.
800 JH/27 Fix a possible security hole, wherein a process operating with the Exim
801 UID can gain a root shell. Credit to http://www.halfdog.net/ for
802 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
803 itself :(
805 JH/28 Enable {spool,log} filesystem space and inode checks as default.
806 Main config options check_{log,spool}_{inodes,space} are now
807 100 inodes, 10MB unless set otherwise in the configuration.
809 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
810 Previously it only applied to the main-section connection policy
811 options.
813 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
815 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
816 by me. Added RFC7919 DH primes as an alternative.
818 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
819 are not in the system include path.
821 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
822 GnuTLS, when a session startup failed (eg because the client disconnected)
823 Exim did stdio operations after fclose. This was exposed by a recent
824 change which nulled out the file handle after the fclose.
826 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
827 signed directly by the cert-signing cert, rather than an intermediate
828 OCSP-signing cert. This is the model used by LetsEncrypt.
830 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
832 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
833 an incoming connection.
835 HS/02 Bug 1802: Do not half-close the connection after sending a request
836 to rspamd.
838 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
839 fallback to "prime256v1".
841 JH/34 SECURITY: Use proper copy of DATA command in error message.
842 Could leak key material. Remotely exploitable. CVE-2016-9963.
845 Exim version 4.87
846 -----------------
848 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
849 and 3.4.4 - once the server is enabled to respond to an OCSP request
850 it does even when not requested, resulting in a stapling non-aware
851 client dropping the TLS connection.
853 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
854 support variable-length bit vectors. No functional change.
856 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
857 The I= interface field on outgoing lines is now after the H= remote
858 host field, same as incoming lines. There is a separate
859 outgoing_interface log selector which allows you to disable the
860 outgoing I= field.
862 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
863 If not running log_selector +smtp_connection the mainlog would be held
864 open indefinitely after a "too many connections" event, including to a
865 deleted file after a log rotate. Leave the per net connection logging
866 leaving it open for efficiency as that will be quickly detected by the
867 check on the next write.
869 HS/01 Bug 1671: Fix post transport crash.
870 Processing the wait-<transport> messages could crash the delivery
871 process if the message IDs didn't exist for some reason. When
872 using 'split_spool_directory=yes' the construction of the spool
873 file name failed already, exposing the same netto behaviour.
875 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
876 mime_regex ACL conditions.
878 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
879 to DSN fail messages (bounces): remote IP, remote greeting, remote response
880 to HELO, local diagnostic string.
882 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
883 log line to debug. Even when configured with a tls authenticator many
884 client connections are expected to not authenticate in this way, so
885 an authenticate fail is not an error.
887 HS/02 Add the Exim version string to the process info. This way exiwhat
888 gives some more detail about the running daemon.
890 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
891 matter for fast-change records such as DNSBLs.
893 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
894 retry record, even if constant. There may be multiple transports with
895 different interface settings and the retry behaviour needs to be kept
896 distinct.
898 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
900 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
902 JH/10 Bug 840: fix log_defer_output option of pipe transport
904 JH/11 Bug 830: use same host for all RCPTS of a message, even under
905 hosts_randomize. This matters a lot when combined with mua_wrapper.
907 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
908 ${quote_pgsql:<string>} operator.
910 JH/13 Bug 1708: avoid misaligned access in cached lookup.
912 JH/14 Change header file name for freeradius-client. Relevant if compiling
913 with Radius support; from the Gentoo tree and checked under Fedora.
915 JH/15 Bug 1712: Introduce $prdr_requested flag variable
917 JH/16 Bug 1714: Permit an empty string as expansion result for transport
918 option transport_filter, meaning no filtering.
920 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
922 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
923 defaults to "*" (all hosts). The variable is now available when not built
924 with TLS, default unset, mainly to enable keeping the testsuite sane.
925 If a server certificate is not supplied (via tls_certificate) an error is
926 logged, and clients will find TLS connections fail on startup. Presumably
927 they will retry in-clear.
928 Packagers of Exim are strongly encouraged to create a server certificate
929 at installation time.
931 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
932 with the $config_file variable.
934 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
935 in transport context, after the attempt, and per-recipient. The latter type
936 is per host attempted. The event data is the error message, and the errno
937 information encodes the lookup type (A vs. MX) used for the (first) host,
938 and the trailing two digits of the smtp 4xx response.
940 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
941 to write to mainlog (or rejectlog, paniclog) in the window between file
942 creation and permissions/ownership being changed. Particularly affects
943 installations where exicyclog is run as root, rather than exim user;
944 result is that the running daemon panics and dies.
946 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
948 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
949 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
950 "pri" and "weight". Note that the previous implicit priority given by the
951 list order is no longer honoured.
953 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
954 for DKIM processing.
956 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
957 by defining SUPPORT_SOCKS.
959 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
960 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
961 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
962 variables are renamed to proxy_{local,external}_{address,port}.
964 JH/27 Move Internationalisation support from Experimental to mainline, enabled
965 for a build by defining SUPPORT_I18N
967 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
968 of the query string, and make ${quote_redis:} do that quoting.
970 JH/29 Move Events support from Experimental to mainline, enabled by default
971 and removable for a build by defining DISABLE_EVENT.
973 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
975 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
976 cached by the daemon.
978 JH/32 Move Redis support from Experimental to mainline, enabled for a build
979 by defining LOOKUP_REDIS. The libhiredis library is required.
981 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
982 keys are given for lookup.
984 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
985 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
986 only supported when built with TLS support. The PolarSSL SHA routines
987 are still used when the TLS library is too old for convenient support.
989 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
990 openssl_options), for security. OpenSSL forces this from version 1.1.0
991 server-side so match that on older versions.
993 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
994 allocation for $value could be released as the expansion processing
995 concluded, but leaving the global pointer active for it.
997 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
998 and to use the domains and local_parts ACL conditions.
1000 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1001 incorrectly not doubled on cutthrough transmission, hence seen as a
1002 body-termination at the receiving system - resulting in truncated mails.
1003 Commonly the sender saw a TCP-level error, and retransmitted the message
1004 via the normal store-and-forward channel. This could result in duplicates
1005 received - but deduplicating mailstores were liable to retain only the
1006 initial truncated version.
1008 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
1010 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1012 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1013 we're in there, support oversigning also; bug 1309.
1015 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1017 HS/04 Add support for keep_environment and add_environment options.
1019 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1020 either intentional arithmetic overflow during PRNG, or testing config-
1021 induced overflows.
1023 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1024 delivery resulted in actual delivery. Cancel cutthrough before DATA
1025 stage.
1027 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1028 rejects a recipient: pass the reject to the originator.
1030 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1031 Many were false-positives and ignorable, but it's worth fixing the
1032 former class.
1034 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1035 for the new environment-manipulation done at startup. Move the routines
1036 from being local to tls.c to being global via the os.c file.
1038 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1039 an extract embedded as result-arg for a map, the first arg for extract
1040 is unavailable so we cannot tell if this is a numbered or keyed
1041 extraction. Accept either.
1044 Exim version 4.86
1045 -----------------
1047 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1048 expanded.
1050 JH/02 The smtp transport option "multi_domain" is now expanded.
1052 JH/03 The smtp transport now requests PRDR by default, if the server offers
1053 it.
1055 JH/04 Certificate name checking on server certificates, when exim is a client,
1056 is now done by default. The transport option tls_verify_cert_hostnames
1057 can be used to disable this per-host. The build option
1060 JH/05 The value of the tls_verify_certificates smtp transport and main options
1061 default to the word "system" to access the system default CA bundle.
1062 For GnuTLS, only version 3.0.20 or later.
1064 JH/06 Verification of the server certificate for a TLS connection is now tried
1065 (but not required) by default. The verification status is now logged by
1066 default, for both outbound TLS and client-certificate supplying inbound
1067 TLS connections
1069 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1070 sites use this now.
1072 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1073 Status Notification (bounce) messages are now MIME format per RFC 3464.
1074 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1075 under the control of the dsn_advertise_hosts option, and routers may
1076 have a dsn_lasthop option.
1078 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1079 default, modifiable by a malware= option. The list separator for
1080 the options can now be changed in the usual way. Bug 68.
1082 JH/10 The smtp_receive_timeout main option is now expanded before use.
1084 JH/11 The incoming_interface log option now also enables logging of the
1085 local interface on delivery outgoing connections.
1087 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1088 if the interface and destination host and port all match.
1090 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1091 /defer_ok option.
1093 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1094 Patch from Andrew Lewis.
1096 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1097 now supports optional time-restrictions, weighting, and priority
1098 modifiers per server. Patch originally by <rommer@active.by>.
1100 JH/16 The spamd_address main option now supports a mixed list of local
1101 and remote servers. Remote servers can be IPv6 addresses, and
1102 specify a port-range.
1104 JH/17 Bug 68: The spamd_address main option now supports an optional
1105 timeout value per server.
1107 JH/18 Bug 1581: Router and transport options headers_add/remove can
1108 now have the list separator specified.
1110 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1111 option values.
1113 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1114 under OpenSSL.
1116 JH/21 Support for the A6 type of dns record is withdrawn.
1118 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1119 rather than the verbs used.
1121 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1122 from 255 to 1024 chars.
1124 JH/24 Verification callouts now attempt to use TLS by default.
1126 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1127 are generic router options now. The defaults didn't change.
1129 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1130 Original patch from Alexander Shikoff, worked over by JH.
1132 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1133 files if ZCAT_COMMAND is not executable.
1135 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1137 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1139 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1140 Normally benign, it bites when the pair was led to by a CNAME;
1141 modern usage is to not canonicalize the domain to a CNAME target
1142 (and we were inconsistent anyway for A-only vs AAAA+A).
1144 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1146 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1147 when evaluating $sender_host_dnssec.
1149 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1150 $sender_helo_dnssec variable.
1152 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1154 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1156 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1158 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1159 documented as working, but never had. Support all but $spam_report.
1161 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1162 added for tls authenticator.
1164 HS/03 Add perl_taintmode main config option
1167 Exim version 4.85
1168 -----------------
1170 TL/01 When running the test suite, the README says that variables such as
1171 no_msglog_check are global and can be placed anywhere in a specific
1172 test's script, however it was observed that placement needed to be near
1173 the beginning for it to behave that way. Changed the runtest perl
1174 script to read through the entire script once to detect and set these
1175 variables, reset to the beginning of the script, and then run through
1176 the script parsing/test process like normal.
1178 TL/02 The BSD's have an arc4random API. One of the functions to induce
1179 adding randomness was arc4random_stir(), but it has been removed in
1180 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1181 function when detected.
1183 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1184 cause callback expansion.
1186 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1187 syntax errors in an expansion can be treated as a string instead of
1188 logging or causing an error, due to the internal use of bool_lax
1189 instead of bool when processing it.
1191 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1192 server certificates when making smtp deliveries.
1194 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1196 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1198 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1200 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1201 Merged patch from Sebastian Wiedenroth.
1203 JH/05 Fix results-pipe from transport process. Several recipients, combined
1204 with certificate use, exposed issues where response data items split
1205 over buffer boundaries were not parsed properly. This eventually
1206 resulted in duplicates being sent. This issue only became common enough
1207 to notice due to the introduction of connection certificate information,
1208 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1210 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1211 size buffer was used, resulting in syntax errors when an expansion
1212 exceeded it.
1214 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1215 version 3.3.6 or later.
1217 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1218 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1219 both become "event_action", the variables become $event_name, $event_data
1220 and $event_defer_errno. There is a new variable $verify_mode, usable in
1221 routers, transports and related events. The tls:cert event is now also
1222 raised for inbound connections, if the main configuration event_action
1223 option is defined.
1225 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1226 early OCSP support, but no stapling (appears to be less than 1.0.0).
1228 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1229 server certificate names available under the smtp transport option
1230 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1231 matches.
1233 JH/10 Time-related extraction expansions from certificates now use the main
1234 option "timezone" setting for output formatting, and are consistent
1235 between OpenSSL and GnuTLS compilations. Bug 1541.
1237 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1238 encoded parameter in the incoming message. Bug 1558.
1240 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1241 include certificate info, eximon was claiming there were spoolfile
1242 syntax errors.
1244 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1246 JH/14 Log delivery-related information more consistently, using the sequence
1247 "H=<name> [<ip>]" wherever possible.
1249 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1250 are problematic for Debian distribution, omit them from the release
1251 tarball.
1253 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1255 JH/16 Fix string representation of time values on 64bit time_t architectures.
1256 Bug 1561.
1258 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1259 output list separator was used.
1262 Exim version 4.84
1263 -----------------
1264 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1265 checkers that were complaining about end of non-void function with no
1266 return.
1268 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1269 This was a regression introduced in 4.83 by another bugfix.
1271 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1273 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1274 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1277 Exim version 4.83
1278 -----------------
1280 TF/01 Correctly close the server side of TLS when forking for delivery.
1282 When a message was received over SMTP with TLS, Exim failed to clear up
1283 the incoming connection properly after forking off the child process to
1284 deliver the message. In some situations the subsequent outgoing
1285 delivery connection happened to have the same fd number as the incoming
1286 connection previously had. Exim would try to use TLS and fail, logging
1287 a "Bad file descriptor" error.
1289 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1290 utilities have not been installed.
1292 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1293 temporary space as the ACL may create new global variables.
1295 TL/01 LDAP support uses per connection or global context settings, depending
1296 upon the detected version of the libraries at build time.
1298 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1299 to extract and use the src ip:port in logging and expansions as if it
1300 were a direct connection from the outside internet. PPv2 support was
1301 updated based on HAProxy spec change in May 2014.
1303 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1305 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1306 Properly escape header and check for NULL return.
1308 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1309 not dns_use_dnssec.
1311 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1313 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1314 characters in header names, implemented as a verify condition.
1315 Contributed by Michael Fischer v. Mollard.
1317 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1318 results permerror and temperror. Previous values are deprecated but
1319 still accepted. In a future release, err_perm and err_temp will be
1320 completely removed, which will be a backward incompatibility if the
1321 ACL tests for either of these two old results. Patch contributed by
1322 user bes-internal on the mailing list.
1324 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1326 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1327 selectors, in both main and reject logs.
1329 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1330 failed delivery.
1332 JH/07 Add malware type "sock" for talking to simple daemon.
1334 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1336 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1337 routers/transports under cutthrough routing.
1339 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1340 numbers. Touch up "bool" conditional to keep the same definition.
1342 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1344 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1346 JH/12 Expand items in router/transport headers_add or headers_remove lists
1347 individually rather than the list as a whole. Bug 1452.
1349 Required for reasonable handling of multiple headers_ options when
1350 they may be empty; requires that headers_remove items with embedded
1351 colons must have them doubled (or the list-separator changed).
1353 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1354 view the policy declared in the DMARC record. Currently, $dmarc_status
1355 is a combined value of both the record presence and the result of the
1356 analysis.
1358 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1360 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1361 dnslookup router and the smtp transport (applying to the forward
1362 lookup).
1364 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1365 of ldap servers used for a specific lookup. Patch provided by Heiko
1366 Schlichting.
1368 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1369 New variable $lookup_dnssec_authenticated for observability.
1371 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1372 Patch submitted by Lars Timman.
1374 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1376 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1377 Requires trusted mode and valid format message id, aborts otherwise.
1378 Patch contributed by Heiko Schlichting.
1380 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1381 certextract with support for various fields. Bug 1358.
1383 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1384 is requested by default, modifiable by smtp transport option
1385 hosts_request_ocsp.
1387 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1388 operate on certificate variables to give certificate fingerprints
1389 Also new ${sha256:cert_variable}.
1391 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1393 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1394 Christian Aistleitner.
1396 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1398 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1399 file. Patch from Wolfgang Breyha.
1401 JH/25 Expand the coverage of the delivery $host and $host_address to
1402 client authenticators run in verify callout. Bug 1476.
1404 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1405 align with daemon_smtp_ports. Bug 72.
1407 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1408 support and error reporting did not work properly.
1410 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1411 and is readable. Patch from Andrew Colin Kissa.
1413 TL/14 Enhance documentation of ${run expansion and how it parses the
1414 commandline after expansion, particularly in the case when an
1415 unquoted variable expansion results in an empty value.
1417 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1419 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1420 by renaming away from it. Addresses GH issue 15, reported by
1421 Jasper Wallace.
1423 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1425 TL/15 SECURITY: prevent double expansion in math comparison functions
1426 (can expand unsanitized data). Not remotely exploitable.
1427 CVE-2014-2972
1430 Exim version 4.82
1431 -----------------
1433 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1435 PP/02 Make -n do something, by making it not do something.
1436 When combined with -bP, the name of an option is not output.
1438 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1439 by GnuTLS.
1441 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1442 $sender_host_name and config options to manage this, and basic check
1443 routines.
1445 PP/05 DSCP support for outbound connections and control modifier for inbound.
1447 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1448 (Only plugin which currently uses this is kerberos4, which nobody should
1449 be using, but we should make it available and other future plugins might
1450 conceivably use it, even though it would break NAT; stuff *should* be
1451 using channel bindings instead).
1453 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1454 name; added for Sendmail compatibility; requires admin caller.
1455 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1456 just ignore it); requires trusted caller.
1457 Also parse but ignore: -Ac -Am -X<logfile>
1458 Bugzilla 1117.
1460 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1462 TL/02 Add +smtp_confirmation as a default logging option.
1464 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1465 Patch by Magnus Holmgren from 2007-02-20.
1467 TL/04 Bugzilla 1281 - Spec typo.
1468 Bugzilla 1283 - Spec typo.
1469 Bugzilla 1290 - Spec grammar fixes.
1471 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1473 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1475 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1476 mailing list by by Dmitry Isaikin.
1478 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1480 JH/02 Support "G" suffix to numbers in ${if comparisons.
1482 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1484 NM/01 Bugzilla 1197 - Spec typo
1485 Bugzilla 1196 - Spec examples corrections
1487 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1489 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1490 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1491 function.
1493 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1494 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1496 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1497 "acl {{name}{arg}...}", and optional args on acl condition
1498 "acl = name arg..."
1500 JH/05 Permit multiple router/transport headers_add/remove lines.
1502 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1504 JH/07 Avoid using a waiting database for a single-message-only transport.
1505 Performance patch from Paul Fisher. Bugzilla 1262.
1507 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1508 Bugzilla 884.
1510 JH/09 Add $headers_added variable, with content from use of ACL modifier
1511 add_header (but not yet added to the message). Bugzilla 199.
1513 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1514 Pulled from Bugzilla 817 by Wolfgang Breyha.
1516 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1517 CVE-2012-5671
1518 (nb: this is the same fix as in Exim 4.80.1)
1520 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1521 authenticators.
1523 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1524 for control.
1526 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1528 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1529 advertise SMTP AUTH mechanism to us, instead of a generic
1530 protocol violation error. Also, make Exim more robust to bad
1531 data from the Dovecot auth socket.
1533 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1535 When a queue runner is handling a message, Exim first routes the
1536 recipient addresses, during which it prunes them based on the retry
1537 hints database. After that it attempts to deliver the message to
1538 any remaining recipients. It then updates the hints database using
1539 the retry rules.
1541 So if a recipient address works intermittently, it can get repeatedly
1542 deferred at routing time. The retry hints record remains fresh so the
1543 address never reaches the final cutoff time.
1545 This is a fairly common occurrence when a user is bumping up against
1546 their storage quota. Exim had some logic in its local delivery code
1547 to deal with this. However it did not apply to per-recipient defers
1548 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1550 This change adds a proper retry rule check during routing so that the
1551 final cutoff time is checked against the message's age. We only do
1552 this check if there is an address retry record and there is not a
1553 domain retry record; this implies that previous attempts to handle
1554 the address had the retry_use_local_parts option turned on. We use
1555 this as an approximation for the destination being like a local
1556 delivery, as in LMTP.
1558 I suspect this new check makes the old local delivery cutoff check
1559 redundant, but I have not verified this so I left the code in place.
1561 TF/02 Correct gecos expansion when From: is a prefix of the username.
1563 Test 0254 submits a message to Exim with the header
1565 Resent-From: f
1567 When I ran the test suite under the user fanf2, Exim expanded
1568 the header to contain my full name, whereas it should have added
1569 a Resent-Sender: header. It erroneously treats any prefix of the
1570 username as equal to the username.
1572 This change corrects that bug.
1574 GF/01 DCC debug and logging tidyup
1575 Error conditions log to paniclog rather than rejectlog.
1576 Debug lines prefixed by "DCC: " to remove any ambiguity.
1578 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1580 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1581 Bug spotted by Jeremy Harris; was flawed since initial commit.
1582 Would have resulted in OCSP responses post-SNI triggering an Exim
1583 NULL dereference and crash.
1585 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1587 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1588 Bug detection, analysis and fix by Samuel Thibault.
1589 Bugzilla 1331, Debian bug #698092.
1591 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1593 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1594 Server implementation by Todd Lyons, client by JH.
1595 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1596 config variable "prdr_enable" controls whether the server
1597 advertises the facility. If the client requests PRDR a new
1598 acl_data_smtp_prdr ACL is called once for each recipient, after
1599 the body content is received and before the acl_smtp_data ACL.
1600 The client is controlled by both of: a hosts_try_prdr option
1601 on the smtp transport, and the server advertisement.
1602 Default client logging of deliveries and rejections involving
1603 PRDR are flagged with the string "PRDR".
1605 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1606 fclose(). Diagnosis by Todd Lyons.
1608 PP/17 Update configure.default to handle IPv6 localhost better.
1609 Patch by Alain Williams (plus minor tweaks).
1610 Bugzilla 880.
1612 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1613 This is now consistent with GnuTLS, and is now documented: the
1614 previous undocumented portable approach to treating the option as
1615 unset was to force an expansion failure. That still works, and
1616 an empty string is now equivalent.
1618 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1619 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1620 not performing validation itself.
1622 PP/20 Added force_command boolean option to pipe transport.
1623 Patch from Nick Koston, of cPanel Inc.
1625 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1626 Bugzilla 321, 823.
1628 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1630 PP/21 Fix eximon continuous updating with timestamped log-files.
1631 Broken in a format-string cleanup in 4.80, missed when I repaired the
1632 other false fix of the same issue.
1633 Report and fix from Heiko Schlichting.
1634 Bugzilla 1363.
1636 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1637 Report from Prashanth Katuri.
1639 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1640 It's SecureTransport, so affects any MacOS clients which use the
1641 system-integrated TLS libraries, including email clients.
1643 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1644 using a MIME ACL for non-SMTP local injection.
1645 Report and assistance in diagnosis by Warren Baker.
1647 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1649 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1651 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1652 last id that failed so it may be referenced in subsequent ACL's.
1654 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1655 Alexander Miroch.
1657 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1658 ldap library initialization, allowing self-signed CA's to be
1659 used. Also properly sets require_cert option later in code by
1660 using NULL (global ldap config) instead of ldap handle (per
1661 session). Bug diagnosis and testing by alxgomz.
1663 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1664 the src/util/ subdirectory.
1666 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1667 renamed to Transport Post Delivery Action by Jeremy Harris, as
1670 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1671 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1672 redis_servers = needs to be configured which will be used by the redis
1673 lookup. Patch from Warren Baker, of The Packet Hub.
1675 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1677 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1678 hostname or reverse DNS when processing a host list. Used suggestions
1679 from multiple comments on this bug.
1681 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1683 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1684 Missed a few lines, added it to make the runtest require no keyboard
1685 interaction.
1687 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1688 contains upper case chars. Make router use caseful_local_part.
1690 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1691 support when GnuTLS has been built with p11-kit.
1694 Exim version 4.80.1
1695 -------------------
1697 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1698 CVE-2012-5671
1699 This, or similar/improved, will also be change PP/11 of 4.82.
1702 Exim version 4.80
1703 -----------------
1705 PP/01 Handle short writes when writing local log-files.
1706 In practice, only affects FreeBSD (8 onwards).
1707 Bugzilla 1053, with thanks to Dmitry Isaikin.
1709 NM/01 Bugzilla 949 - Documentation tweak
1711 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1712 improved.
1714 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1716 PP/02 Implemented gsasl authenticator.
1718 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1720 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1721 `pkg-config foo` for cflags/libs.
1723 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1724 with rest of GSASL and with heimdal_gssapi.
1726 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1727 `pkg-config foo` for cflags/libs for the TLS implementation.
1729 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1730 properties get this fed in as external SSF. A number of robustness
1731 and debugging improvements to the cyrus_sasl authenticator.
1733 PP/08 cyrus_sasl server now expands the server_realm option.
1735 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1736 Patch by Jeremy Harris.
1738 PP/10 Added dbmjz lookup type.
1740 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1742 PP/12 MAIL args handles TAB as well as SP, for better interop with
1743 non-compliant senders.
1744 Analysis and variant patch by Todd Lyons.
1746 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1747 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1748 Patch from Dirk Mueller <dmueller@suse.com>
1750 PP/13 tls_peerdn now print-escaped for spool files.
1751 Observed some $tls_peerdn in wild which contained \n, which resulted
1752 in spool file corruption.
1754 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1755 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1756 or write after TLS renegotiation, which otherwise led to messages
1757 "Got SSL error 2".
1759 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1760 as a tracking header (ie: a signed header comes before the signature).
1761 Patch from Wolfgang Breyha.
1763 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1764 comma-sep list; embedded commas doubled.
1766 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1768 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1769 diagnostics.
1770 Report and patch from Dmitry Banschikov.
1772 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1773 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1774 failures. We appear to now support TLS1.1+ with Exim.
1776 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1777 lets Exim select keys and certificates based upon TLS SNI from client.
1778 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1779 before an outbound SMTP session. New log_selector, +tls_sni.
1781 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1782 NULL dereference. Report and patch from Alun Jones.
1784 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1785 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1786 Not seeing resolver debug output on NetBSD, but suspect this is a
1787 resolver implementation change.
1789 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1790 Left warnings. Added "eximon gdb" invocation mode.
1792 PP/21 Defaulting "accept_8bitmime" to true, not false.
1794 PP/22 Added -bw for inetd wait mode support.
1796 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1797 locate the relevant includes and libraries. Made this the default.
1799 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1800 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1802 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1803 This may cause build issues on older platforms.
1805 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1806 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1807 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1808 Added SNI support via GnuTLS too.
1809 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1811 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1813 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1814 Applied second patch from Janne, implementing suggestion to default
1815 multiple-strings-in-record handling to match SPF spec.
1817 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1819 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1820 read-only, out of scope).
1821 Patch from Wolfgang Breyha, report from Stuart Northfield.
1823 PP/29 Fix three issues highlighted by clang analyser static analysis.
1824 Only crash-plausible issue would require the Cambridge-specific
1825 iplookup router and a misconfiguration.
1826 Report from Marcin Mirosław.
1828 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1830 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1831 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1832 As part of this, removing so much warning spew let me fix some minor
1833 real issues in debug logging.
1835 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1836 assignment on my part. Fixed.
1838 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1839 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1840 Janne Snabb (who went above and beyond: thank you).
1842 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1843 string otherwise requires a connection and a bunch more work and it's
1844 relatively easy to get wrong. Should also expose TLS library linkage
1845 problems.
1847 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1848 64-bit ${eval} (JH/03).
1850 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1851 GNU libc to support some of the 64-bit stuff, should not lead to
1852 conflicts. Defined before os.h is pulled in, so if a given platform
1853 needs to override this, it can.
1855 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1856 protection layer was required, which is not implemented.
1857 Bugzilla 1254, patch from Wolfgang Breyha.
1859 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1860 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1861 tls_dhparam take prime identifiers. Also unbreak combination of
1862 OpenSSL+DH_params+TLSSNI.
1864 PP/39 Disable SSLv2 by default in OpenSSL support.
1867 Exim version 4.77
1868 -----------------
1870 PP/01 Solaris build fix for Oracle's LDAP libraries.
1871 Bugzilla 1109, patch from Stephen Usher.
1873 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1875 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1876 whitespace trailer
1878 TF/02 Fix a couple more cases where we did not log the error message
1879 when unlink() failed. See also change 4.74-TF/03.
1881 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1882 lock up or crash if it happened to be inside a call to libc when it
1883 got a SIGUSR1 from exiwhat.
1885 The SIGUSR1 handler appends the current process status to the process
1886 log which is later printed by exiwhat. It used to use the general
1887 purpose logging code to do this, but several functions it calls are
1888 not safe for signals.
1890 The new output code in the SIGUSR1 handler is specific to the process
1891 log, and simple enough that it's easy to inspect for signal safety.
1892 Removing some special cases also simplifies the general logging code.
1893 Removing the spurious timestamps from the process log simplifies
1894 exiwhat.
1896 TF/04 Improved ratelimit ACL condition.
1898 The /noupdate option has been deprecated in favour of /readonly which
1899 has clearer semantics. The /leaky, /strict, and /readonly update modes
1900 are mutually exclusive. The update mode is no longer included in the
1901 database key; it just determines when the database is updated. (This
1902 means that when you upgrade Exim will forget old rate measurements.)
1904 Exim now checks that the per_* options are used with an update mode that
1905 makes sense for the current ACL. For example, when Exim is processing a
1906 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1907 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1908 must specify per_mail/readonly. If you omit the update mode it defaults to
1909 /leaky where that makes sense (as before) or /readonly where required.
1911 The /noupdate option is now undocumented but still supported for
1912 backwards compatibility. It is equivalent to /readonly except that in
1913 ACLs where /readonly is required you may specify /leaky/noupdate or
1914 /strict/noupdate which are treated the same as /readonly.
1916 A useful new feature is the /count= option. This is a generalization
1917 of the per_byte option, so that you can measure the throughput of other
1918 aggregate values. For example, the per_byte option is now equivalent
1919 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1921 The per_rcpt option has been generalized using the /count= mechanism
1922 (though it's more complicated than the per_byte equivalence). When it is
1923 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1924 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1925 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1926 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1927 Note that using per_rcpt with a non-readonly update mode in more than
1928 one ACL will cause the recipients to be double-counted. (The per_mail
1929 and per_byte options don't have this problem.)
1931 The handling of very low rates has changed slightly. If the computed rate
1932 is less than the event's count (usually one) then this event is the first
1933 after a long gap. In this case the rate is set to the same as this event's
1934 count, so that the first message of a spam run is counted properly.
1936 The major new feature is a mechanism for counting the rate of unique
1937 events. The new per_addr option counts the number of different
1938 recipients that someone has sent messages to in the last time period. It
1939 behaves like per_rcpt if all the recipient addresses are different, but
1940 duplicate recipient addresses do not increase the measured rate. Like
1941 the /count= option this is a general mechanism, so the per_addr option
1942 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1943 example, measure the rate that a client uses different sender addresses
1944 with the options per_mail/unique=$sender_address. There are further
1945 details in the main documentation.
1947 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1949 TF/06 Removed a few PCRE remnants.
1951 TF/07 Automatically extract Exim's version number from tags in the git
1952 repository when doing development or release builds.
1954 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1955 Bugzilla 879. Patch from Paul Fisher.
1957 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1958 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1959 Bugzilla 97.
1961 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1963 PP/05 Variable $av_failed, true if the AV scanner deferred.
1964 Bugzilla 1078. Patch from John Horne.
1966 PP/06 Stop make process more reliably on build failure.
1967 Bugzilla 1087. Patch from Heiko Schlittermann.
1969 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1970 Bugzilla 1089. Patch from Heiko Schlittermann.
1972 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1973 Bugzilla 1131. Patch from Holger Weiß.
1975 PP/09 Handle IPv6 addresses with SPF.
1976 Bugzilla 860. Patch from Wolfgang Breyha.
1978 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1979 Bugzilla 1156.
1980 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1981 Bugzilla 1095.
1983 PP/11 match_* no longer expand right-hand-side by default.
1984 New compile-time build option, EXPAND_LISTMATCH_RHS.
1985 New expansion conditions, "inlist", "inlisti".
1987 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1989 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1991 PP/14 fix log_write() format string regression from TF/03.
1992 Bugzilla 1152. Patch from Dmitry Isaikin.
1995 Exim version 4.76
1996 -----------------
1998 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2000 PP/02 Harmonised TLS library version reporting; only show if debugging.
2001 Layout now matches that introduced for other libraries in 4.74 PP/03.
2003 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2005 PP/04 New "dns_use_edns0" global option.
2007 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2008 Bugzilla 1098.
2010 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2011 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
2013 TK/01 Updated PolarSSL code to 0.14.2.
2014 Bugzilla 1097. Patch from Andreas Metzler.
2016 PP/07 Catch divide-by-zero in ${eval:...}.
2017 Fixes bugzilla 1102.
2019 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2020 Bugzilla 1104.
2022 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2023 format-string attack -- SECURITY: remote arbitrary code execution.
2025 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2026 time unintentionally subject to list matching rules, letting the header
2027 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2028 arbitrary string expansion). This allowed for information disclosure.
2030 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2031 INT_MIN/-1 -- value coerced to INT_MAX.
2034 Exim version 4.75
2035 -----------------
2037 NM/01 Workaround for PCRE version dependency in version reporting
2038 Bugzilla 1073
2040 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2041 This fixes portability to compilers other than gcc, notably
2042 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2044 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2045 makefiles for portability to HP-UX and POSIX correctness.
2047 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2048 Also via indented variable definition in the Makefile.
2049 (Debugging by Oliver Heesakkers).
2051 PP/02 Restore caching of spamd results with expanded spamd_address.
2052 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2054 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2055 Improves build reliability. Fix from: Frank Elsner
2057 NM/02 Fix wide character breakage in the rfc2047 coding
2058 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2060 NM/03 Allow underscore in dnslist lookups
2061 Fixes bug 1026. Patch from Graeme Fowler
2063 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2064 Code patches from Adam Ciarcinski of NetBSD.
2066 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2067 Fixes bug 943.
2069 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2070 is logged, to avoid truncation. Patch from John Horne.
2072 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2073 Patch from Jakob Hirsch.
2075 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2076 SQL string expansion failure details.
2077 Patch from Andrey Oktyabrski.
2079 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2080 Patch from Simon Arlott.
2082 PP/09 New lookups functionality failed to compile on old gcc which rejects
2083 extern declarations in function scope.
2084 Patch from Oliver Fleischmann
2086 PP/10 Use sig_atomic_t for flags set from signal handlers.
2087 Check getgroups() return and improve debugging.
2088 Fixed developed for diagnosis in bug 927 (which turned out to be
2089 a kernel bug).
2091 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2092 Patch from Mark Zealey.
2094 PP/12 Bugzilla 1056: Improved spamd server selection.
2095 Patch from Mark Zealey.
2097 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2098 Based on patch from Heiko Schlittermann.
2100 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2101 Patch from Uwe Doering, sign-off by Michael Haardt.
2103 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2104 variable declaration deep within a block. Bug and patch from
2105 Dennis Davis.
2107 PP/15 lookups-Makefile IRIX compatibility coercion.
2109 PP/16 Make DISABLE_DKIM build knob functional.
2111 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2112 Patch by Simon Arlott
2114 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2115 variable argument macros. Our copy now differs from upstream.
2118 Exim version 4.74
2119 -----------------
2121 TF/01 Failure to get a lock on a hints database can have serious
2122 consequences so log it to the panic log.
2124 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2125 controlled using the smtp_confirmation log selector.
2127 TF/03 Include the error message when we fail to unlink a spool file.
2129 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2130 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2131 for maintaining out-of-tree patches for some time.
2133 PP/01 Bugzilla 139: Documentation and portability issues.
2134 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2135 Handle per-OS dynamic-module compilation flags.
2137 PP/02 Let /dev/null have normal permissions.
2138 The 4.73 fixes were a little too stringent and complained about the
2139 permissions on /dev/null. Exempt it from some checks.
2140 Reported by Andreas M. Kirchwitz.
2142 PP/03 Report version information for many libraries, including
2143 Exim version information for dynamically loaded libraries. Created
2144 version.h, now support a version extension string for distributors
2145 who patch heavily. Dynamic module ABI change.
2147 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2148 privilege escalation vulnerability whereby the Exim run-time user
2149 can cause root to append content of the attacker's choosing to
2150 arbitrary files.
2152 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2153 (Wolfgang Breyha)
2155 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2156 If dropping privileges for untrusted macros, we disabled normal logging
2157 on the basis that it would fail; for the Exim run-time user, this is not
2158 the case, and it resulted in successful deliveries going unlogged.
2159 Fixed. Reported by Andreas Metzler.
2162 Exim version 4.73
2163 -----------------
2165 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2166 only prepend for the Resent-* case. Fixes regression introduced in
2167 Exim 4.70 by NM/22 for Bugzilla 607.
2169 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2170 increasing numbers of administrators be bitten by this.
2172 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2174 PP/03 Bugzilla 994: added openssl_options main configuration option.
2176 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2178 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2180 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2182 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2183 without a peer certificate, leading to a segfault because of an
2184 assumption that peers always have certificates. Be a little more
2185 paranoid. Problem reported by Martin Tscholak.
2187 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2188 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2189 NB: ClamAV planning to remove STREAM in "middle of 2010".
2190 CL also introduces -bmalware, various -d+acl logging additions and
2191 more caution in buffer sizes.
2193 PP/09 Implemented reverse_ip expansion operator.
2195 PP/10 Bugzilla 937: provide a "debug" ACL control.
2197 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2199 PP/12 Bugzilla 973: Implement --version.
2201 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2203 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2205 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2207 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2208 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2209 ignore trailing whitespace.
2211 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2213 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2214 "exim" to be used
2216 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2217 Notification from Dr Andrew Aitchison.
2219 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2220 ExtendedDetectionInfo response format.
2221 Notification from John Horne.
2223 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2224 compatible.
2226 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2227 XSL and documented dependency on system catalogs, with examples of how
2228 it normally works.
2230 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2231 access.
2233 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2234 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2235 configuration file which is writeable by the Exim user or group.
2237 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2238 of configuration files to cover files specified with the -C option if
2239 they are going to be used with root privileges, not just the default
2240 configuration file.
2242 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2243 option (effectively making it always true).
2245 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2246 files to be used while preserving root privileges.
2248 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2249 that rogue child processes cannot use them.
2251 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2252 run-time user, instead of root.
2254 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2255 Exim run-time user without dropping privileges.
2257 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2258 result string, instead of calling string_vformat() twice with the same
2259 arguments.
2262 for other users. Others should always drop root privileges if they use
2263 -C on the command line, even for a whitelisted configure file.
2267 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2270 Exim version 4.72
2271 -----------------
2273 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2274 $data_path, and $header_path variables; fixed documentation bugs and
2275 typos
2277 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2278 exipick to access non-standard spools, including the "frozen" queue
2279 (Finput)
2281 NM/01 Bugzilla 965: Support mysql stored procedures.
2282 Patch from Alain Williams
2284 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2286 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2287 Patch from Andreas Metzler
2289 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2290 Patch from Kirill Miazine
2292 NM/05 Bugzilla 671: Added umask to procmail example.
2294 JJ/03 installed exipick 20100323.0, fixing doc bug
2296 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2297 directory. Notification and patch from Dan Rosenberg.
2299 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2301 TK/02 Improve log output when DKIM signing operation fails.
2303 MH/01 Treat the transport option dkim_domain as a colon separated
2304 list, not as a single string, and sign the message with each element,
2305 omitting multiple occurences of the same signer.
2307 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2308 Bugzilla 985, 986. Patch by Simon Arlott
2310 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2311 Patch by Simon Arlott
2313 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2314 MBX locking. Notification from Dan Rosenberg.
2317 Exim version 4.71
2318 -----------------
2320 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2322 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2324 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2326 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2328 NM/04 Bugzilla 915: Flag broken perl installation during build.
2331 Exim version 4.70
2332 -----------------
2334 TK/01 Added patch by Johannes Berg that expands the main option
2335 "spamd_address" if it starts with a dollar sign.
2337 TK/02 Write list of recipients to X-Envelope-Sender header when building
2338 the mbox-format spool file for content scanning (suggested by Jakob
2339 Hirsch).
2341 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2342 (http://www.dcc-servers.net/) support via dccifd. Activated by
2343 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2345 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2346 by Mark Daniel Reidel <mr@df.eu>.
2348 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2349 When building exim an external PCRE library is now needed -
2350 PCRE is a system library on the majority of modern systems.
2351 See entry on PCRE_LIBS in EDITME file.
2353 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2354 conversation. Added nologin parameter to request.
2355 Patch contributed by Kirill Miazine.
2357 TF/01 Do not log submission mode rewrites if they do not change the address.
2359 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2361 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2362 log files in place. Contributed by Roberto Lima.
2364 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2366 TF/03 Bugzilla 615: When checking the local_parts router precondition
2367 after a local_part_suffix or local_part_prefix option, Exim now
2368 does not use the address's named list lookup cache, since this
2369 contains cached lookups for the whole local part.
2371 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2372 Robert Millan. Documentation is in experimental-spec.txt.
2374 TF/04 Bugzilla 668: Fix parallel build (make -j).
2376 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2378 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2379 Patch provided by Jan Srzednicki.
2381 TF/05 Leading white space used to be stripped from $spam_report which
2382 wrecked the formatting. Now it is preserved.
2384 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2385 that they are available at delivery time.
2387 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2389 TF/08 TLS error reporting now respects the incoming_interface and
2390 incoming_port log selectors.
2392 TF/09 Produce a more useful error message if an SMTP transport's hosts
2393 setting expands to an empty string.
2395 NM/06 Bugzilla 744: EXPN did not work under TLS.
2396 Patch provided by Phil Pennock.
2398 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2399 Patch provided by Richard Godbee.
2401 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2402 acl_smtp_notquit, added index entry.
2404 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2405 Patch provided by Eugene Bujak.
2407 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2408 accept(). Patch provided by Maxim Dounin.
2410 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2411 Patch provided by Phil Pennock.
2413 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2415 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2416 Patch provided by Brad "anomie" Jorsch.
2418 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2419 Patch provided by Dean Brooks.
2421 TK/05 Add native DKIM support (does not depend on external libraries).
2423 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2424 Patch provided by Graeme Fowler.
2426 NM/16 Bugzilla 851: Documentation example syntax fix.
2428 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2430 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2431 lsearch.
2433 NM/19 Bugzilla 745: TLS version reporting.
2434 Patch provided by Phil Pennock.
2436 NM/20 Bugzilla 167: bool: condition support.
2437 Patch provided by Phil Pennock.
2439 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2440 clients. Patch provided by Phil Pennock.
2442 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2443 Patch provided by Brad "anomie" Jorsch.
2445 NM/23 Bugzilla 687: Fix misparses in eximstats.
2446 Patch provided by Heiko Schlittermann.
2448 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2449 Patch provided by Heiko Schlittermann.
2451 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2452 plus update to original patch.
2454 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2456 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2457 Patch provided by David Brownlee.
2459 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2461 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2463 NM/30 Bugzilla 888: TLS documentation bugfixes.
2465 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2467 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2468 Unlike the original bugzilla I have changed all shell scripts in src tree.
2470 NM/33 Bugzilla 898: Transport filter timeout fix.
2471 Patch by Todd Rinaldo.
2473 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2474 Patch by Serge Demonchaux.
2476 NM/35 Bugzilla 39: Base64 decode bug fixes.
2477 Patch by Jakob Hirsch.
2479 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2481 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2483 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2485 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2488 Exim version 4.69
2489 -----------------
2491 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2492 ALT-N's libdkim that I have put here:
2493 http://duncanthrax.net/exim-experimental/
2495 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2496 were called 'true' and it seems that C99 defines that as a reserved
2497 keyword to be used with 'bool' variable types. That means you could
2498 not include C99-style headers which use bools without triggering
2499 build errors in sieve.c.
2501 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2502 as mailq or other aliases. Changed the --help handling significantly
2503 to do whats expected. exim_usage() emits usage/help information.
2505 SC/01 Added the -bylocaldomain option to eximstats.
2507 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2509 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2511 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2514 Exim version 4.68
2515 -----------------
2517 PH/01 Another patch from the Sieve maintainer.
2519 PH/02 When an IPv6 address is converted to a string for single-key lookup
2520 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2521 dots are used instead of colons so that keys in lsearch files need not
2522 contain colons. This was done some time before quoting was made available
2523 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2524 (notated using the quote facility) so as to distinguish them from IPv4
2525 keys. This meant that lookups for IP addresses in host lists did not work
2526 for iplsearch lookups.
2528 This has been fixed by arranging for IPv6 addresses to be expressed with
2529 colons if the lookup type is iplsearch. This is not incompatible, because
2530 previously such lookups could never work.
2532 The situation is now rather anomalous, since one *can* have colons in
2533 ordinary lsearch keys. However, making the change in all cases is
2534 incompatible and would probably break a number of configurations.
2536 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2537 version.
2539 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2540 conversion specification without a maximum field width, thereby enabling
2541 a rogue spamd server to cause a buffer overflow. While nobody in their
2542 right mind would setup Exim to query an untrusted spamd server, an
2543 attacker that gains access to a server running spamd could potentially
2544 exploit this vulnerability to run arbitrary code as the Exim user.
2546 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2547 $primary_hostname instead of what libspf2 thinks the hosts name is.
2549 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2550 a directory entry by the name of the lookup key. Previously, if a
2551 symlink pointed to a non-existing file or a file in a directory that
2552 Exim lacked permissions to read, a lookup for a key matching that
2553 symlink would fail. Now it is enough that a matching directory entry
2554 exists, symlink or not. (Bugzilla 503.)
2556 PH/03 The body_linecount and body_zerocount variables are now exported in the
2557 local_scan API.
2559 PH/04 Added the $dnslist_matched variable.
2561 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2562 This means they are set thereafter only if the connection becomes
2563 encrypted.
2565 PH/06 Added the client_condition to authenticators so that some can be skipped
2566 by clients under certain conditions.
2568 PH/07 The error message for a badly-placed control=no_multiline_responses left
2569 "_responses" off the end of the name.
2571 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2573 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2574 (without spaces) instead of just copying the configuration text.
2576 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2578 PH/11 Added $max_received_linelength.
2580 PH/12 Added +ignore_defer and +include_defer to host lists.
2582 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2583 way in which PCRE > 7.0 is built.
2585 PH/14 Implemented queue_only_load_latch.
2587 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2588 MAIL command. The effect was to mangle the value on 64-bit systems.
2590 PH/16 Another patch from the Sieve maintainer.
2592 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2594 PH/18 If a system quota error occurred while trying to create the file for
2595 a maildir delivery, the message "Mailbox is full" was not appended to the
2596 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2597 only to a quota excession during the actual writing of the file.
2599 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2600 characters?) which causes problems in log lines. The DN values are now
2601 passed through string_printing() before being added to log lines.
2603 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2604 and InterBase are left for another time.)
2606 PH/21 Added message_body_newlines option.
2608 PH/22 Guard against possible overflow in moan_check_errorcopy().
2610 PH/23 POSIX allows open() to be a macro; guard against that.
2612 PH/24 If the recipient of an error message contained an @ in the local part
2613 (suitably quoted, of course), incorrect values were put in $domain and
2614 $local_part during the evaluation of errors_copy.
2617 Exim version 4.67
2618 -----------------
2620 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2621 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2622 Jan Srzednicki.
2624 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2625 issue a MAIL command.
2627 PH/02 In an ACL statement such as
2629 deny dnslists = X!= : X=
2631 if a client was not listed at all, or was listed with a value other than
2632, in the X list, but was listed with in the Y list,
2633 the condition was not true (as it should be), so access was not denied.
2634 The bug was that the ! inversion was incorrectly passed on to the second
2635 item. This has been fixed.
2637 PH/03 Added additional dnslists conditions == and =& which are different from
2638 = and & when the dns lookup returns more than one IP address.
2640 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2641 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2643 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2644 FSYNC, which compiles an option called disable_fsync that allows for
2645 bypassing fsync(). The documentation is heavily laced with warnings.
2647 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2649 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2650 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2651 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2652 including adding "make clean"; (3) Added -fPIC when compiling the test
2653 dynamically loaded module, to get rid of a warning.
2655 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2656 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2657 = 0s. The bug is otherwise harmless.
2659 PH/07 There was a bug in the dovecot authenticator such that the value of
2660 $auth1 could be overwritten, and so not correctly preserved, after a
2661 successful authentication. This usually meant that the value preserved by
2662 the server_setid option was incorrect.
2664 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2666 PH/09 Installed PCRE release 7.0.
2668 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2669 run for batched SMTP input. It is now run at the start of every message
2670 in the batch. While fixing this I discovered that the process information
2671 (output by running exiwhat) was not always getting set for -bs and -bS
2672 input. This is fixed, and it now also says "batched" for BSMTP.
2674 PH/11 Added control=no_pipelining.
2676 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2677 patch, slightly modified), and move the expansion of helo_data till after
2678 the connection is made in the smtp transport (so it can use these
2679 values).
2681 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2683 PH/14 Added log_selector = +pid.
2685 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2687 PH/16 Add ${if forany and ${if forall.
2689 PH/17 Added dsn_from option to vary the From: line in DSNs.
2691 PH/18 Flush SMTP output before performing a callout, unless control =
2692 no_callout_flush is set.
2694 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2695 was true (the default) a successful delivery failed to delete the retry
2696 item, thus causing premature timeout of the address. The bug is now
2697 fixed.
2699 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2701 PH/21 Long custom messages for fakedefer and fakereject are now split up
2702 into multiline responses in the same way that messages for "deny" and
2703 other ACL rejections are.
2705 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2706 with slight modification.
2708 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2709 draft, changing the syntax and factoring some duplicate code".
2711 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2712 for deliveries of the second and subsequent messages over the same SMTP
2713 connection.
2715 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2716 ${reduce, with only minor "tidies".
2718 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2720 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2721 expansion side effects.
2723 PH/27 When a message times out after an over-quota error from an Exim-imposed
2724 quota, the bounce message says "mailbox is full". This message was not
2725 being given when it was a system quota that was exceeded. It now should
2726 be the same.
2728 MH/03 Made $recipients available in local_scan(). local_scan() already has
2729 better access to the recipient list through recipients_list[], but
2730 $recipients can be useful in postmaster-provided expansion strings.
2732 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2733 in the case of a MAIL command with additional options following the
2734 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2735 were accidentally chopped off.
2737 PH/29 SMTP synchronization checks are implemented when a command is read -
2738 there is a check that no more input is waiting when there shouldn't be
2739 any. However, for some commands, a delay in an ACL can mean that it is
2740 some time before the response is written. In this time, more input might
2741 arrive, invalidly. So now there are extra checks after an ACL has run for
2742 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2743 pipelining has not been advertised.
2745 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2747 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2748 returned in the SMTP response when smtp_return_error_details was false.
2749 This has been fixed.
2751 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2752 instead of the C I/O that was originally supplied, because problems were
2753 reported on Solaris.
2755 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2756 Exim which did not show up earlier: it was assuming that a call to
2757 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2758 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2759 was a macro that became an assignment, so it seemed to work. This has
2760 changed to a proper function call with a void return, hence the compile
2761 error. Exim's code has been fixed.
2763 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2764 cpus.
2766 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2768 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2770 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2771 because it turns out to be too big or there is a timeout) there is no
2772 "Completed" line in the log. When some messages of this type were
2773 selected by exigrep, they were listed as "not completed". Others were
2774 picked up by some special patterns. I have improved the selection
2775 criteria to be more general.
2777 PH/38 The host_find_failed option in the manualroute router can now be set
2778 to "ignore", to completely ignore a host whose IP address cannot be
2779 found. If all hosts are ignored, the behaviour is controlled by the new
2780 host_all_ignored option.
2782 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2783 homing or because of multiple MX records with /mx) generated more than
2784 one IP address, and the following item turned out to be the local host,
2785 all the secondary addresses of the first item were incorrectly removed
2786 from the list, along with the local host and any following hosts (which
2787 is what is supposed to happen).
2789 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2790 whoever called Exim into the -H file. In the case of the daemon it was
2791 behaving confusingly. When first started, it used values for whoever
2792 started the daemon, but after a SIGHUP it used the Exim user (because it
2793 calls itself on a restart). I have changed the code so that it now always
2794 uses the Exim user.
2796 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2797 message are rejected with the same error (e.g. no authentication or bad
2798 sender address), and a DATA command is nevertheless sent (as can happen
2799 with PIPELINING or a stupid MUA), the error message that was given to the
2800 RCPT commands is included in the rejection of the DATA command. This is
2801 intended to be helpful for MUAs that show only the final error to their
2802 users.
2804 PH/42 Another patch from the Sieve maintainer.
2806 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2807 Eximstats - Fixed some broken HTML links and added missing column headers
2808 (Jez Hancock).
2809 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2810 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2812 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2814 PH/43 Yet another patch from the Sieve maintainer.
2816 PH/44 I found a way to check for a TCP/IP connection going away before sending
2817 the response to the final '.' that terminates a message, but only in the
2818 case where the client has not sent further data following the '.'
2819 (unfortunately, this is allowed). However, in many cases there won't be
2820 any further data because there won't be any more messages to send. A call
2821 to select() can be used: if it shows that the input is "ready", there is
2822 either input waiting, or the socket has been closed. An attempt to read
2823 the next input character can distinguish the two cases. Previously, Exim
2824 would have sent an OK response which the client would never have see.
2825 This could lead to message repetition. This fix should cure that, at
2826 least in a lot of common cases.
2828 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2829 advertised in response to EHLO.
2832 Exim version 4.66
2833 -----------------
2835 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2836 fixed by 4.65/MH/01 (is this a record?) are fixed:
2838 (i) An empty string was always treated as zero by the numeric comparison
2839 operators. This behaviour has been restored.
2841 (ii) It is documented that the numeric comparison operators always treat
2842 their arguments as decimal numbers. This was broken in that numbers
2843 starting with 0 were being interpreted as octal.
2845 While fixing these problems I realized that there was another issue that
2846 hadn't been noticed. Values of message_size_limit (both the global option
2847 and the transport option) were treated as octal if they started with 0.
2848 The documentation was vague. These values are now always treated as
2849 decimal, and I will make that clear in the documentation.
2852 Exim version 4.65
2853 -----------------
2855 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2856 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2857 versions. (#438)
2859 MH/01 Don't check that the operands of numeric comparison operators are
2860 integers when their expansion is in "skipping" mode (fixes bug
2861 introduced by 4.64-PH/07).
2863 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2864 child addresses, Exim now panics and dies. Previously, because the count
2865 is held in a short int, deliveries were likely to be lost. As such a
2866 large number of recipients for a single message is ridiculous
2867 (performance will be very, very poor), I have chosen to impose a limit
2868 rather than extend the field.
2871 Exim version 4.64
2872 -----------------
2874 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2875 leftover -K file (the existence of which was triggered by #402).
2876 While we were at it, introduced process PID as part of the -K
2877 filename. This should rule out race conditions when creating
2878 these files.
2880 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2881 processing considerably. Previous code took too long for large mails,
2882 triggering a timeout which in turn triggers #401.
2884 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2885 in the DK code in transports.c. sendfile() is not really portable,
2886 hence the _LINUX specificness.
2888 TF/01 In the add_headers option to the mail command in an Exim filter,
2889 there was a bug that Exim would claim a syntax error in any
2890 header after the first one which had an odd number of characters
2891 in the field name.
2893 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2894 callout verification, Exim cached a "reject" for the entire domain. This
2895 is correct for most verifications, but it is not correct for a recipient
2896 verification with use_sender or use_postmaster set, because in that case
2897 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2898 case of MAIL FROM:<> rejection from other early rejections (e.g.
2899 rejection of HELO). When verifying a recipient using a non-null MAIL
2900 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2901 Whatever the result of the callout, the value of the domain cache is
2902 left unchanged (for any other kind of callout, getting as far as trying
2903 RCPT means that the domain itself is ok).
2905 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2906 gcc 4.1.1 threw up.
2908 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2909 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2910 session, the daemon ignores ECONNECT errors and logs others; it now
2911 ignores EPIPE as well.
2913 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2914 (quoted-printable decoding).
2916 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2917 later the small subsequent patch to fix an introduced bug.
2919 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2921 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2923 PH/08 An error is now given if message_size_limit is specified negative.
2925 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2926 to be given (somewhat) arbitrary names.
2928 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2929 in 4.64-PH/09.
2931 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2932 miscellaneous code fixes
2934 PH/10 Added the log_reject_target ACL modifier to specify where to log
2935 rejections.
2937 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2938 hostname. This is wrong, because it relates to the incoming message (and
2939 probably the interface on which it is arriving) and not to the outgoing
2940 callout (which could be using a different interface). This has been
2941 changed to use the value of the helo_data option from the smtp transport
2942 instead - this is what is used when a message is actually being sent. If
2943 there is no remote transport (possible with a router that sets up host
2944 addresses), $smtp_active_hostname is used.
2946 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2947 tweaks were necessary in order to get it to work (see also 21 below):
2948 (a) The code assumed that strncpy() returns a negative number on buffer
2949 overflow, which isn't the case. Replaced with Exim's string_format()
2950 function.
2951 (b) There were several signed/unsigned issues. I just did the minimum
2952 hacking in of casts. There is scope for a larger refactoring.
2953 (c) The code used strcasecmp() which is not a standard C function.
2954 Replaced with Exim's strcmpic() function.
2955 (d) The code set only $1; it now sets $auth1 as well.
2956 (e) A simple test gave the error "authentication client didn't specify
2957 service in request". It would seem that Dovecot has changed its
2958 interface. Fortunately there's a specification; I followed it and
2959 changed what the client sends and it appears to be working now.
2961 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2962 decoding.
2964 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2965 address A is aliased to B and C, where B exists and C does not. Without
2966 -v the output is "A verified" because verification stops after a
2967 successful redirection if more than one address is generated. However,
2968 with -v the child addresses are also verified. Exim was outputting "A
2969 failed to verify" and then showing the successful verification for C,
2970 with its parentage. It now outputs "B failed to verify", showing B's
2971 parentage before showing the successful verification of C.
2973 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2974 look up a TXT record in a specific list after matching in a combined
2975 list.
2977 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2978 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2979 they consult the DNS. I had assumed they would set it the way they
2980 wanted; and indeed my experiments on Linux seem to show that in some
2981 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2982 To be on the safe side, however, I have now made the interface to
2983 host_find_byname() similar to host_find_bydns(), with an argument
2984 containing the DNS resolver options. The host_find_byname() function now
2985 sets these options at its start, just as host_find_bydns() does. The smtp
2986 transport options dns_qualify_single and dns_search_parents are passed to
2987 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2988 of host_find_byname() use the default settings of RES_DEFNAMES
2989 (qualify_single) but not RES_DNSRCH (search_parents).
2991 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2992 spool_read_header() do less string testing, by means of a preliminary
2993 switch on the second character of optional "-foo" lines. (This is
2994 overdue, caused by the large number of possibilities that now exist.
2995 Originally there were few.) While I was there, I also converted the
2996 str(n)cmp tests so they don't re-test the leading "-" and the first
2997 character, in the hope this might squeeze out yet more improvement.
2999 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
3000 flag allowing group syntax was set by the header_syntax check but not
3001 turned off, possible causing trouble later; (2) The flag was not being
3002 set at all for the header_verify test, causing "group"-style headers to
3003 be rejected. I have now set it in this case, and also caused header_
3004 verify to ignore an empty address taken from a group. While doing this, I
3005 came across some other cases where the code for allowing group syntax
3006 while scanning a header line wasn't quite right (mostly, not resetting
3007 the flag correctly in the right place). These bugs could have caused
3008 trouble for malformed header lines. I hope it is now all correct.
3010 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3011 with the "reply" argument non-NULL. The code, however (which originally
3012 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3013 but it didn't always do it. This confused somebody who was copying the
3014 code for some other use. I have removed all the tests.
3016 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3017 feature that was used to support insecure browsers during the U.S. crypto
3018 embargo. It requires special client support, and Exim is probably the
3019 only MTA that supported it -- and would never use it because real RSA is
3020 always available. This code has been removed, because it had the bad
3021 effect of slowing Exim down by computing (never used) parameters for the
3022 RSA_EXPORT functionality.
3024 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3025 authenticator to fail if there's a tab character in the incoming data
3026 (there should never be unless someone is messing about, as it's supposed
3027 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3028 if the connection is using TLS or if the remote IP is the same as the
3029 local IP, and the "valid-client-cert option" if a client certificate has
3030 been verified.
3032 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3033 authenticators. This can be used for authorization after authentication
3034 succeeds. (In the case of plaintext, it servers for both authentication
3035 and authorization.)
3037 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3038 if any retry times were supplied.
3040 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3041 connection, where there is no client IP address to check. In this
3042 situation, the verify now always succeeds.
3044 PH/25 Applied John Jetmore's -Mset patch.
3046 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3048 PH/27 In a string expansion for a processed (not raw) header when multiple
3049 headers of the same name were present, leading whitespace was being
3050 removed from all of them, but trailing whitespace was being removed only
3051 from the last one. Now trailing whitespace is removed from each header
3052 before concatenation. Completely empty headers in a concatenation (as
3053 before) are ignored.
3055 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3056 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3058 PH/29 [Removed. This was a change that I later backed out, and forgot to
3059 correct the ChangeLog entry (that I had efficiently created) before
3060 committing the later change.]
3062 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3063 address errors (4xx response to RCPT) over the same connection as other
3064 messages routed to the same hosts. Such deliveries are always "forced",
3065 so retry times are not inspected. This resulted in far too many retries
3066 for the affected addresses. The effect occurred only when there were more
3067 hosts than the hosts_max_try setting in the smtp transport when it had
3068 the 4xx errors. Those hosts that it had tried were not added to the list
3069 of hosts for which the message was waiting, so if all were tried, there
3070 was no problem. Two fixes have been applied:
3072 (i) If there are any address or message errors in an SMTP delivery, none
3073 of the hosts (tried or untried) are now added to the list of hosts
3074 for which the message is waiting, so the message should not be a
3075 candidate for sending over the same connection that was used for a
3076 successful delivery of some other message. This seems entirely
3077 reasonable: after all the message is NOT "waiting for some host".
3078 This is so "obvious" that I'm not sure why it wasn't done
3079 previously. Hope I haven't missed anything, but it can't do any
3080 harm, as the worst effect is to miss an optimization.
3082 (ii) If, despite (i), such a delivery is accidentally attempted, the
3083 routing retry time is respected, so at least it doesn't keep
3084 hammering the server.
3086 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3087 in ${readsocket because some servers need this prod.
3089 PH/32 Added some extra debug output when updating a wait-xxx database.
3091 PH/33 The hint "could be header name not terminated by colon", which has been
3092 given for certain expansion errors for a long time, was not being given
3093 for the ${if def:h_colon_omitted{... case.
3095 PH/34 The spec says: "With one important exception, whenever a domain list is
3096 being scanned, $domain contains the subject domain." There was at least
3097 one case where this was not true.
3099 PH/35 The error "getsockname() failed: connection reset by peer" was being
3100 written to the panic log as well as the main log, but it isn't really
3101 panic-worthy as it just means the connection died rather early on. I have
3102 removed the panic log writing for the ECONNRESET error when getsockname()
3103 fails.
3105 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3106 runs only) independently of the message's sender address. This meant
3107 that, if the 4xx error was in fact related to the sender, a different
3108 message to the same recipient with a different sender could confuse
3109 things. In particular, this can happen when sending to a greylisting
3110 server, but other circumstances could also provoke similar problems.
3111 I have changed the default so that the retry time for these errors is now
3112 based a combination of the sender and recipient addresses. This change
3113 can be overridden by setting address_retry_include_sender=false in the
3114 smtp transport.
3116 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3117 remote server are returned as part of bounce messages. This was not
3118 happening for LMTP over a pipe (the lmtp transport), but now it is the
3119 same for both kinds of LMTP.
3121 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3122 in header lines that were in fact CNAMEs. This is no longer the case.
3124 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3125 and queue runs started by the daemon processed all messages. This has
3126 been fixed so that -R and -S can now usefully be given with -q<time>.
3128 PH/40 Import PCRE release 6.7 (fixes some bugs).
3130 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3132 PH/42 Give an error if -q is specified more than once.
3134 PH/43 Renamed the variables $interface_address and $interface_port as
3135 $received_ip_address and $received_port, to make it clear that these
3136 values apply to message reception, and not to the outgoing interface when
3137 a message is delivered. (The old names remain recognized, of course.)
3139 PH/44 There was no timeout on the connect() call when using a Unix domain
3140 socket in the ${readsocket expansion. There now is.
3142 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3143 be meaningful with "accept".
3145 SC/01 Eximstats V1.43
3146 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3148 SC/02 Eximstats V1.44
3149 Use a glob alias rather than an array ref in the generated
3150 parser. This improves both readability and performance.
3152 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3153 Collect SpamAssassin and rejection statistics.
3154 Don't display local sender or destination tables unless
3155 there is data to show.
3156 Added average volumes into the top table text output.
3158 SC/04 Eximstats V1.46
3159 Collect data on the number of addresses (recipients)
3160 as well as the number of messages.
3162 SC/05 Eximstats V1.47
3163 Added 'Message too big' to the list of mail rejection
3164 reasons (thanks to Marco Gaiarin).
3166 SC/06 Eximstats V1.48
3167 Mainlog lines which have GMT offsets and are too short to
3168 have a flag are now skipped.
3170 SC/07 Eximstats V1.49 (Alain Williams)
3171 Added the -emptyok flag.
3173 SC/08 Eximstats V1.50
3174 Fixes for obtaining the IP address from reject messages.
3176 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3177 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3178 whitespace changes from 4.64-PH/27
3180 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3181 match 4.64-PH/13
3183 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3184 are found, allow negative numbers in numeric criteria)
3186 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3188 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3189 to match changes made in 4.64-PH/43
3191 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3193 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3194 "domain" is actually an IP address, and force a failure. This locks out
3195 those revolvers/nameservers that support "A-for-A" lookups, in
3196 contravention of the specifications.
3198 PH/48 When a host name was looked up from an IP address, and the subsequent
3199 forward lookup of the name timed out, the host name was left in
3200 $sender_host_name, contrary to the specification.
3202 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3203 restricted to single-key lookups, Exim was not diagnosing an error if
3204 * or *@ was used with a query-style lookup.
3206 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3208 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3209 long ago, but noone interested enough thought of it. Let's just say that
3210 the "1.1" means that there are some new functions that weren't there at
3211 some point in the past.
3213 PH/51 Error processing for expansion failure of helo_data from an smtp
3214 transport during callout processing was broken.
3216 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3217 tested/used via the -bh/-bhc/-bs options.
3219 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3220 bug, fixed in subsequent PCRE releases).
3222 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3223 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3225 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3228 Exim version 4.63
3229 -----------------
3231 SC/01 Use a glob alias rather than an array ref in eximstats generated
3232 parser. This improves both readability and performance.
3234 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3235 Don't display local sender or destination tables in eximstats unless
3236 there is data to show.
3237 Added average volumes into the eximstats top table text output.
3239 SC/03 Collect data on the number of addresses (recipients) as well
3240 as the number of messages in eximstats.
3242 TF/01 Correct an error in the documentation for the redirect router. Exim
3243 does (usually) call initgroups() when daemonizing.
3245 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3246 with consistent privilege compared to when running as a daemon.
3248 TF/03 Note in the spec that $authenticated_id is not set for local
3249 submissions from trusted users.
3251 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3252 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3254 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3255 by adding some example configuration directives to the default
3256 configuration file. A little bit of work is required to uncomment the
3257 directives and define how usernames and passwords are checked, but
3258 there is now a framework to start from.
3260 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3261 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3262 without this. I don't know how relevant this is to other LDAP libraries.
3264 PH/02 Add the verb name to the "unknown ACL verb" error.
3266 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3268 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3270 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3271 directory not expanded when it should be if an expanded home directory
3272 was set for the address (which is overridden by the transport).
3274 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3275 libradius.
3277 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3278 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3279 because it is too late at that time, and has no effect.
3281 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3282 security issue with \' (bugzilla #107). I could not use the
3283 PQescapeStringConn() function, because it needs a PGconn value as one of
3284 its arguments.
3286 PH/08 When testing addresses using -bt, indicate those final addresses that
3287 are duplicates that would not cause an additional delivery. At least one
3288 person was confused, thinking that -bt output corresponded to deliveries.
3289 (Suppressing duplicates isn't a good idea as you lose the information
3290 about possibly different redirections that led to the duplicates.)
3292 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3293 systems where poll() doesn't work, in particular OS X.
3295 PH/10 Added more information to debugging output for retry time not reached.
3297 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3298 operations in malware.c.
3300 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3301 signatures.
3303 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3304 syslog_duplication set false, log lines that would normally be written
3305 both the the main log and to the reject log were not written to syslog at
3306 all.
3308 PH/14 In the default configuration, change the use of "message" in ACL warn
3309 statements to "add_header".
3311 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3312 not followed by a command (e.g. "seen endif").
3314 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3315 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3316 latter.
3318 PH/17 Added extra conditions to the default value of delay_warning_condition
3319 so that it is now:
3321 ${if or { \
3322 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3323 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3324 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3325 }{no}{yes}}
3327 The Auto-Submitted: and various List- headers are standardised, whereas I
3328 don't think Precedence: ever was.
3330 PH/18 Refactored debugging code in route_finduser() to show more information,
3331 in particular, the error code if getpwnam() issues one.
3333 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3334 This is apparently needed in addition to the PH/07 change above to avoid
3335 any possible encoding problems.
3337 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3338 but not after initializing Perl.
3340 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3341 output them only if debugging. By default they are written stderr,
3342 apparently, which is not desirable.
3344 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3345 queries.
3347 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3348 --not options
3350 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3352 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3353 authenticated or an ident call has been made. Suppress the default
3354 values for $authenticated_id and $authenticated_sender (but permit -oMai
3355 and -oMas) when testing with -bh.
3357 PH/24 Re-jigged the order of the tests in the default configuration so that the
3358 tests for valid domains and recipients precede the DNS black list and CSA
3359 tests, on the grounds that those ones are more expensive.
3361 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3362 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3363 This bug exists in every version of Exim that I still have, right back to
3364 0.12.
3366 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3367 However, an attempt to turn on case-sensitivity in a regex key by
3368 including (?-i) didn't work because the subject string was already
3369 lowercased, and the effects were non-intuitive. It turns out that a
3370 one-line patch can be used to allow (?-i) to work as expected.
3373 Exim version 4.62
3374 -----------------
3376 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3377 other effects) broke the use of negated acl sub-conditions.
3379 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3380 patch).
3382 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3383 "Deny" causes Exim to reject the incoming connection with a 554 error.
3384 Unfortunately, if there is a major crisis, such as a disk failure,
3385 tcp-wrappers gives "deny", whereas what one would like would be some
3386 kind of temporary error. A kludge has been added to help with this.
3387 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3388 554 error is used if errno is still zero or contains ENOENT (which occurs
3389 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3390 451 error is used.
3392 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3394 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3395 errors. Otherwise a message that provokes a temporary error (when other
3396 messages do not) can cause a whole host to time out.
3398 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3399 addresses were routed directly to files or pipes from a redirect router.
3400 File deliveries just didn't batch; pipe deliveries might have suffered
3401 odd errors.
3403 PH/06 A failure to get a lock for a hints database would erroneously always say
3404 "Failed to get write lock", even when it was really a read lock.
3406 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3407 of 0600. This has been changed to use the value of the lockfile_mode
3408 option (which defaults to 0600).
3410 PH/08 Applied small patch from the Sieve maintainer.
3412 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3413 folder from quota calculations, a direct delivery into this folder messed
3414 up the contents of the maildirsize file. This was because the regex was
3415 used only to exclude .Trash (or whatever) when the size of the mailbox
3416 was calculated. There was no check that a delivery was happening into an
3417 excluded directory. This bug has been fixed by ignoring all quota
3418 processing for deliveries into excluded directories.
3420 PH/10 Added the maildirfolder_create_regex option to appendfile.
3423 Exim version 4.61
3424 -----------------
3426 PH/01 The code for finding all the local interface addresses on a FreeBSD
3427 system running IPv6 was broken. This may well have applied to all BSD
3428 systems, as well as to others that have similar system calls. The broken
3429 code found IPv4 interfaces correctly, but gave incorrect values for the
3430 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3431 that it would not match correctly against @[] and not recognize the IPv6
3432 addresses as local.
3434 PH/02 The ipliteral router was not recognizing addresses of the form user@
3435 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3437 PH/03 Added disable_ipv6.
3439 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3440 decoded form, because it is most often used to construct To: headers
3441 lines in autoreplies, and the decoded form may well be syntactically
3442 invalid. However, $reply_address has leading white space removed, and all
3443 newlines turned into spaces so that the autoreply transport does not
3444 grumble.
3446 PH/05 If group was specified without a user on a router, and no group or user
3447 was specified on a transport, the group from the router was ignored.
3449 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3450 for visible compile-time settings that can be used to change these
3451 numbers, for those that want even more. Backwards compatibility with old
3452 spool files has been maintained. However, going back to a previous Exim
3453 release will lost any variables that are in spool files.
3455 PH/07 Two small changes when running in the test harness: increase delay when
3456 passing a TCP/IP connection to a new process, in case the original
3457 process has to generate a bounce, and remove special handling of
3458 (sic), which is no longer necessary.
3460 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3461 be the same on different OS.
3463 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3464 testing.
3466 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3467 whether --show-vars was specified or not
3469 JJ/02 exipick: Added support for new ACL variable spool format introduced
3470 in 4.61-PH/06
3472 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3473 syntactically invalid From: or Reply-to: line, and a filter used this to
3474 generate an autoreply, and therefore failed to obtain an address for the
3475 autoreply, Exim could try to deliver to a non-existent relative file
3476 name, causing unrelated and misleading errors. What now happens is that
3477 it logs this as a hard delivery error, but does not attempt to create a
3478 bounce message.
3480 PH/11 The exinext utility has a -C option for testing purposes, but although
3481 the given file was scanned by exinext itself; it wasn't being passed on
3482 when Exim was called.
3484 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3485 an end-of-file indication when reading a command response.
3487 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3488 compiled. In many other places in Exim, IPv6 addresses are always
3489 recognized, so I have changed this. It also means that IPv4 domain
3490 literals of the form [IPV4:n.n.n.n] are now always recognized.
3492 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3493 used if the router is not running as root, for example, when verifying at
3494 ACL time, or when using -bh. The debugging output from this situation was
3495 non-existent - all you got was a failure to exec. I have made two
3496 changes:
3498 (a) Failures to set uid/gid, the current directory, or a process leader
3499 in a subprocess such as that created by queryprogram now generate
3500 suitable debugging output when -d is set.
3502 (b) The queryprogram router detects when it is not running as root,
3503 outputs suitable debugging information if -d is set, and then runs
3504 the subprocess without attempting to change uid/gid.
3506 PH/15 Minor change to Makefile for building test_host (undocumented testing
3507 feature).
3509 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3510 additional section of a DNS packet that returns MX or SRV records.
3511 Instead, it always explicitly searches for A/AAAA records. This avoids
3512 major problems that occur when a DNS server includes only records of one
3513 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3514 fixed another bug: if SRV records were looked up and the corresponding
3515 address records were *not* found in the additional section, the port
3516 values from the SRV records were lost.
3518 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3519 using the correct key (the original address) when searching the retry
3520 rules in order to find which one to use for generating the retry hint.
3522 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3523 adding the default one. Similarly, if it contains a Reply-To: header, the
3524 errors_reply_to option, if set, is not used.
3526 PH/19 When calculating a retry time, Exim used to measure the "time since
3527 failure" by looking at the "first failed" field in the retry record. Now
3528 it does not use this if it is later than than the arrival time of the
3529 message. Instead it uses the arrival time. This makes for better
3530 behaviour in cases where some deliveries succeed, thus re-setting the
3531 "first failed" field. An example is a quota failure for a huge message
3532 when small messages continue to be delivered. Without this change, the
3533 "time since failure" will always be short, possible causing more frequent
3534 delivery attempts for the huge message than are intended.
3535 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3537 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3538 $1, $2, $3) because the numerical variables can be reset during some
3539 expansion items (e.g. "match"), thereby losing the authentication data.
3541 PH/21 Make -bV show the size of off_t variables so that the test suite can
3542 decide whether to run tests for quotas > 2G.
3544 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3545 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3546 filecount value is greater than 2G or if a quota value is greater than 2G
3547 on a system where the size of off_t is not greater than 4, a panic error
3548 is given.
3550 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3551 never match. The debug and -bh output now contains an explicit error
3552 message indicating a malformed IPv4 address or mask.
3554 PH/24 An host item such as was being treated as the IP address
3555 without a mask. Now it is not recognized as an IP address, and
3556 PH/23 above applies.
3558 PH/25 Do not write to syslog when running in the test harness. The only
3559 occasion when this arises is a failure to open the main or panic logs
3560 (for which there is an explicit test).
3562 PH/26 Added the /no_tell option to "control=freeze".
3564 PH/27 If a host name lookup failed very early in a connection, for example, if
3565 the IP address matched host_lookup and the reverse lookup yielded a name
3566 that did not have a forward lookup, an error message of the form "no IP
3567 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3568 could be logged. Now it outputs the IP address instead of "NULL".
3570 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3571 allows the sender and the authenticated sender to be set when
3572 submitting a message from within Exim. Since child_open_exim() is
3573 documented for local_scan(), the new function should be too.
3575 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3576 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3577 results in an empty string is now treated as unset.
3579 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3581 PH/31 Added sender_verify_fail logging option.
3583 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3584 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3585 tidied the source and removed it altogether.
3587 PH/33 When a queue run was abandoned because the load average was too high, a
3588 log line was always written; now it is written only if the queue_run log
3589 selector is set. In addition, the log line for abandonment now contains
3590 information about the queue run such as the pid. This is always present
3591 in "start" and "stop" lines but was omitted from the "abandon" line.
3593 PH/34 Omit spaces between a header name and the colon in the error message that
3594 is given when verify = headers_syntax fails (if there are lots of them,
3595 the message gets confusing).
3597 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3598 names, as there are now some PTR records that contain slashes. This check
3599 is only to protect against broken name servers that fall over on strange
3600 characters, so the fact that it applies to all lookups doesn't matter.
3602 PH/36 Now that the new test suite is complete, we can remove some of the
3603 special code in Exim that was needed for the old test suite. For example,
3604 sorting DNS records because real resolvers return them in an arbitrary
3605 order. The new test suite's fake resolver always returns records in the
3606 same order.
3608 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3609 bounces) except when queue_only is set, to avoid logging races between
3610 the different processes.
3612 PH/38 Panic-die if .include specifies a non-absolute path.
3614 PH/39 A tweak to the "H" retry rule from its user.
3616 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3617 a label. They prevented compilation on older perls.
3619 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3620 a warning to be raised on newish perls.
3622 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3623 on queue. Changes to match documented behaviour of showing count of
3624 messages matching specified criteria.
3626 PH/40 Changed the default ident timeout from 30s to 5s.
3628 PH/41 Added support for the use of login_cap features, on those BSD systems
3629 that have them, for controlling the resources used by pipe deliveries.
3631 PH/42 The content-scanning code uses fopen() to create files in which to put
3632 message data. Previously it was not paying any attention to the mode of
3633 the files. Exim runs with umask(0) because the rest of the code creates
3634 files with open(), and sets the required mode explicitly. Thus, these
3635 files were ending up world-writeable. This was not a big issue, because,
3636 being within the spool directory, they were not world-accessible. I have
3637 created a function called modefopen, which takes an additional mode
3638 argument. It sets umask(777), creates the file, chmods it to the required
3639 mode, then resets the umask. All the relevant calls to fopen() in the
3640 content scanning code have been changed to use this function.
3642 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3643 to 24 hours. This avoids potential overflow problems when processing G
3644 and H retry rules. I suspect nobody ever tinkers with this value.
3646 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3648 PH/45 When the plaintext authenticator is running as a client, the server's
3649 challenges are checked to ensure they are valid base64 strings. By
3650 default, the authentication attempt is cancelled if an invalid string is
3651 received. Setting client_ignore_invalid_base64 true ignores these errors.
3652 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3653 they are received. Thus, the responses can be made to depend on the
3654 challenges. If an invalid string is ignored, an empty string is placed in
3655 the variable.
3657 PH/46 Messages that are created by the autoreply transport now contains a
3658 References: header, in accordance with RFCs 2822 and 3834.
3660 PH/47 Added authenticated_sender_force to the smtp transport.
3662 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3664 PH/49 Installed latest patch from the Sieve maintainer.
3666 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3667 was also set, the appendfile transport was unnecessarily scanning a
3668 directory of message files (e.g. for maildir delivery) to find the count
3669 of files (along with the size), even though it did not need this
3670 information. It now does the scan only if it needs to find either the
3671 size of the count of files.
3673 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3675 PH/52 Two bugs concerned with error handling when the smtp transport is
3676 used in LMTP mode:
3678 (i) Exim was not creating retry information for temporary errors given
3679 for individual recipients after the DATA command when the smtp transport
3680 was used in LMTP mode. This meant that they could be retried too
3681 frequently, and not timed out correctly.
3683 (ii) Exim was setting the flag that allows error details to be returned
3684 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3685 recipients that were returned after the DATA command.
3687 PH/53 This is related to PH/52, but is more general: for any failing address,
3688 when detailed error information was permitted to be returned to the
3689 sender, but the error was temporary, then after the final timeout, only
3690 "retry timeout exceeded" was returned. Now it returns the full error as
3691 well as "retry timeout exceeded".
3693 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3694 do this, and (what is worse) MTAs that accept it.
3696 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3697 will now be deprecated.
3699 PH/56 New os.c-cygwin from the Cygwin maintainer.
3701 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3702 formats (previously only available in exim formats via -bpr, -bpru,
3703 and -bpra. Now also available in native and exiqgrep formats)
3705 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3706 with very large, slow to parse queues
3708 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3710 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3712 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3713 responses to authentication challenges, though it was showing the
3714 challenges; (ii) I've removed the CR characters from the debug output for
3715 SMTP output lines.
3717 PH/58 Allow for the insertion of a newline as well as a space when a string
3718 is turned into more than one encoded-word during RFC 2047 encoding. The
3719 Sieve code now uses this.
3721 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3722 data_4xx, lost_connection, tls_required.
3724 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3725 message was being sent as an SMTP response.
3727 PH/61 Add -l and -k options to exicyclog.
3729 PH/62 When verifying, if an address was redirected to one new address, so that
3730 verification continued, and the new address failed or deferred after
3731 having set something in $address_data, the value of $address_data was not
3732 passed back to the ACL. This was different to the case when no
3733 redirection occurred. The value is now passed back in both cases.
3735 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3736 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3737 use login_cap.h, so on its own it isn't the distinguishing feature. The
3738 new name refers directly to the setclassresources() function.
3740 PH/65 Added configuration files for NetBSD3.
3742 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3744 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3745 is preferred over IPv4.
3747 PH/68 The bounce_return_message and bounce_return_body options were not being
3748 honoured for bounces generated during the reception of non-SMTP messages.
3749 In particular, this applied to messages rejected by the ACL. This bug has
3750 been fixed. However, if bounce_return_message is true and bounce_return_
3751 body is false, the headers that are returned for a non-SMTP message
3752 include only those that have been read before the error was detected.
3753 (In the case of an ACL rejection, they have all been read.)
3755 PH/69 The HTML version of the specification is now built in a directory called
3756 spec_html instead of spec.html, because the latter looks like a path with
3757 a MIME-type, and this confuses some software.
3759 PH/70 Catch two compiler warnings in sieve.c.
3761 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3762 function verify_get_ident() calls ip_connect() to connect a socket, but
3763 if the "connect()" function timed out, ip_connect() used to close the
3764 socket. However, verify_get_ident() also closes the socket later, and in
3765 between Exim writes to the log, which may get opened at this point. When
3766 the socket was closed in ip_connect(), the log could get the same file
3767 descriptor number as the socket. This naturally causes chaos. The fix is
3768 not to close the socket in ip_connect(); the socket should be closed by
3769 the function that creates it. There was only one place in the code where
3770 this was missing, in the iplookup router, which I don't think anybody now
3771 uses, but I've fixed it anyway.
3773 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3774 well as to direct DNS lookups. Otherwise the handling of names in host
3775 lists is inconsistent and therefore confusing.
3778 Exim version 4.60
3779 -----------------
3781 PH/01 Two changes to the default runtime configuration:
3783 (1) Move the checks for relay_from_hosts and authenticated clients from
3784 after to before the (commented out) DNS black list checks.
3786 (2) Add control=submission to the relay_from_hosts and authenticated
3787 clients checks, on the grounds that messages accepted by these
3788 statements are most likely to be submissions.
3790 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3792 (1) Generate an error if the third argument for the ${prvs expansion is
3793 not a single digit.
3795 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3796 string.
3798 (3) Reset the variables that are obtained from the first argument of
3799 ${prvscheck and used in the second argument before leaving the code,
3800 because their memory is reclaimed, so using them afterwards may do
3801 silly things.
3803 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3804 one (it's much easier than Tom thought :-).
3806 (5) Because of (4), we can now allow for the use of $prvscheck_result
3807 inside the third argument.
3809 PH/03 For some reason, the default setting of PATH when running a command from
3810 a pipe transport was just "/usr/bin". I have changed it to
3811 "/bin:/usr/bin".
3814 anything to be listed in the output from -bV.
3816 PH/05 When a filter generated an autoreply, the entire To: header line was
3817 quoted in the delivery log line, like this:
3819 => >A.N.Other <ano@some.domain> <original@ddress> ...
3821 This has been changed so that it extracts the operative address. There
3822 may be more than one such address. If so, they are comma-separated, like
3823 this:
3825 => >ano@some.domain,ona@other.domain <original@ddress> ...
3827 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3828 command, (for example, EHLO []) and the client's IP address was
3829 not being looked up in the rDNS to get a host name, Exim was showing the
3830 IP address twice in Received: lines, even though the IP addresses were
3831 identical. For example:
3833 Received: from [] (helo=[])
3835 However, if the real host name was known, it was omitting the HELO data
3836 if it matched the actual IP address. This has been tidied up so that it
3837 doesn't show the same IP address twice.
3839 PH/07 When both +timestamp and +memory debugging was on, the value given by
3840 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3841 called by the debug printing, thereby overwriting the timestamp buffer.
3842 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3844 PH/08 When the original message was included in an autoreply transport, it
3845 always said "this is a copy of the message, including all the headers",
3846 even if body_only or headers_only was set. It now gives an appropriate
3847 message.
3849 PH/09 Applied a patch from the Sieve maintainer which:
3851 o fixes some comments
3852 o adds the (disabled) notify extension core
3853 o adds some debug output for the result of if/elsif tests
3854 o points to the current vacation draft in the documentation
3855 and documents the missing references header update
3857 and most important:
3859 o fixes a bug in processing the envelope test (when testing
3860 multiple envelope elements, the last element determined the
3861 result)
3863 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3864 Electronic Mail") by including:
3866 Auto-submitted: auto-generated
3868 in the messages that it generates (bounce messages and others, such as
3869 warnings). In the case of bounce messages for non-SMTP messages, there was
3870 also a typo: it was using "Auto_submitted" (underscore instead of
3871 hyphen). Since every message generated by Exim is necessarily in response
3872 to another message, thes have all been changed to:
3874 Auto-Submitted: auto-replied
3876 in accordance with these statements in the RFC:
3878 The auto-replied keyword:
3880 - SHOULD be used on messages sent in direct response to another
3881 message by an automatic process,
3883 - MUST NOT be used on manually-generated messages,
3885 - MAY be used on Delivery Status Notifications (DSNs) and Message
3886 Disposition Notifications (MDNs),
3888 - MUST NOT be used on messages generated by automatic or periodic
3889 processes, except for messages which are automatic responses to
3890 other messages.
3892 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3893 to the default Received: header definition.
3895 PH/12 Added log selector acl_warn_skipped (default on).
3897 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3898 variables because (a) they are in the wrong storage pool and (b) even if
3899 they were copied, it wouldn't work properly because of the caching.
3901 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3902 checking when decoding. Apparently there are clients that generate
3903 overlong encoded strings. Why am I not surprised?
3905 PH/15 If the first argument of "${if match_address" was not empty, but did not
3906 contain an "@" character, Exim crashed. Now it writes a panic log message
3907 and treats the condition as false.
3909 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3911 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3912 extension "envelope-auth". The code is finished and in agreement with
3913 other implementations, but there is no documentation so far and in fact,
3914 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3915 not changing the active code.
3917 Print executed "if" and "elsif" statements when debugging is used. This
3918 helps a great deal to understand what a filter does.
3920 Document more things not specified clearly in RFC3028. I had all this
3921 sorted out, when out of a sudden new issues came to my mind. Oops."
3923 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3924 (Bugzilla #53).
3926 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3927 canonical form (as documented). However, after a host name lookup from
3928 the IP address, check_host() was doing a simple string comparison with
3929 addresses acquired from the DNS when checking that the found name did
3930 have the original IP as one of its addresses. Since any found IPv6
3931 addresses are likely to be in abbreviated form, the comparison could
3932 fail. Luckily, there already exists a function for doing the comparison
3933 by converting both addresses to binary, so now that is used instead of
3934 the text comparison.
3936 PH/20 There was another similar case to PH/19, when a complete host name was
3937 given in a host list; looking up its IP address could give an abbreviated
3938 form, whereas the current host's name might or might not be abbreviated.
3939 The same fix has been applied.
3942 Exim version 4.54
3943 -----------------
3945 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3946 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3947 It now does.
3949 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3950 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3952 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3954 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3955 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3956 Also, for "Auto-Submitted", treat anything other than "no" as
3957 non-personal, in accordance with RFC 3834. (Previously it treated
3958 anything starting "auto-" as non-personal.)
3960 TF/01 The control=submission/name=... option had a problem with syntax
3961 errors if the name included a slash character. The /name= option
3962 now slurps the rest of the string, so it can include any characters
3963 but it must come last in the list of options (after /sender_retain
3964 or /domain=).
3966 PH/05 Some modifications to the interface to the fake nameserver for the new
3967 testing suite.
3971 Exim version 4.53
3972 -----------------
3974 TK/01 Added the "success_on_redirect" address verification option. See
3975 NewStuff for rationale and an example.
3977 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3979 PH/02 Patch to exigrep to allow it to work on syslog lines.
3981 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3982 fread() to skip over the body file's header line, because in Cygwin the
3983 header line is locked and is inaccessible.
3985 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3986 co-exist for some time) to make it clear that it is the Exim ID that is
3987 referenced, not the Message-ID: header line.
3989 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3990 string_format() function, because snprintf() does not exist on all
3991 operating systems.
3993 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3994 ${stat: expansion item.
3996 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3997 protocol synchronization error", to keep the pedants happy.
3999 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
4000 well as for IRIX systems, when gcc is being used. See the host.c source
4001 file for comments.
4003 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
4005 PH/10 Named domain lists were not working if used in a queue_smtp_domains
4006 setting.
4008 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
4009 transport and to the smtp transport in LMTP mode.
4011 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
4013 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
4014 run a filter in a subprocess. This could lead to confusion in subsequent
4015 lookups in the parent process. There should also be a search_tidyup() at
4016 the end of the subprocess.
4018 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
4019 only if the host matched helo_try_verify_hosts, which caused the
4020 verification to occur when the EHLO/HELO command was issued. The ACL just
4021 tested the remembered result. Now, if a previous verification attempt has
4022 not happened, "verify = helo" does it there and then.
4024 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
4026 TK/03 Fix log output including CR from clamd.
4028 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
4029 exist provoked a memory error which could cause a segfault.
4031 PH/15 Installed PCRE 6.2
4033 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
4035 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
4036 of the problem. Specifically, suggested +O2 rather than +O1 for the
4037 HP-UX compiler.
4039 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
4041 PH/20 If a delivery was routed to a non-standard port by means of an SRV
4042 record, the port was not correctly logged when the outgoing_port log
4043 selector was set (it logged the transort's default port).
4045 PH/21 Added support for host-specific ports to manualroute, queryprogram,
4046 fallback_hosts, and "hosts" in the smtp transport.
4048 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
4049 host errors such as "Connection refused".
4051 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
4052 authentication with radiusclient 0.4.9:
4054 - Error returned from rc_read_config was caught wrongly
4055 - Username/password not passed on to radius server due to wrong length.
4057 The presumption is that some radiusclient API changes for 4.51/PH/17
4058 were not taken care of correctly. The code is still untested by me (my
4059 Linux distribution still has 0.3.2 of radiusclient), but it was
4060 contributed by a Radius user.
4062 PH/24 When doing a callout, the value of $domain wasn't set correctly when
4063 expanding the "port" option of the smtp transport.
4065 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
4066 while reading a MIME header. Thanks to Tom Hughes for a patch.
4068 PH/24 Include config.h inside local_scan.h so that configuration settings are
4069 available.
4071 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
4072 that in an ACL for RCPT (for example), you can examine exactly what was
4073 received.
4075 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
4076 commands, but it was not correctly comparing the address with the actual
4077 client host address. Thus, it would show the EHLO address in Received:
4078 header lines when this was not necessary.
4080 PH/27 Added the % operator to ${eval:}.
4082 PH/28 Exim tries to create and chdir to its spool directory when it starts;
4083 it should be ignoring failures (because with -C, for example, it has lost
4084 privilege). It wasn't ignoring creation failures other than "already
4085 exists".
4087 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
4088 -bV or -d is used.
4090 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
4091 because an input line was too long, either on its own, or by virtue of
4092 too many continuations, the temporary file was not being removed, and the
4093 return code was incorrect.
4095 PH/31 Missing "BOOL" in function definition in filtertest.c.
4097 PH/32 Applied Sieve patches from the maintainer.
4099 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
4101 PH/33 Added "verify = not_blind".
4103 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
4104 Local/Makefile (with some defaults set). These are used in built scripts
4105 such as exicyclog, but they have never been used in the exim_install
4106 script (though there are many overriding facilities there). I have
4107 arranged that the exim_install script now takes note of these two
4108 settings.
4110 PH/35 Installed configuration files for Dragonfly.
4112 PH/36 When a locally submitted message by a trusted user did not contain a
4113 From: header, and the sender address was obtained from -f or from an SMTP
4114 MAIL command, and the trusted user did not use -F to supply a sender
4115 name, $originator_name was incorrectly used when constructing a From:
4116 header. Furthermore, $originator_name was used for submission mode
4117 messages from external hosts without From: headers in a similar way,
4118 which is clearly wrong.
4120 PH/37 Added control=suppress_local_fixups.
4122 PH/38 When log_selector = +received_sender was set, and the addition of the
4123 sender made the log line's construction buffer exactly full, or one byte
4124 less than full, an overflow happened when the terminating "\n" was
4125 subsequently added.
4127 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
4128 when the result of a list match is failure because a DNS lookup failed.
4130 PH/40 RM_COMMAND is now used in the building process.
4132 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
4133 the "build-* directories that it finds.
4135 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
4136 address in a domain literal was a prefix of an interface address.
4138 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
4139 when verifying a sender address, unless rewrite_headers is false.
4141 PH/44 Wrote a long comment about why errors_to addresses are verified as
4142 recipients, not senders.
4144 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
4145 the ratelimit ACL was added.
4147 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
4149 PH/46 Added extra information about PostgreSQL errors to the error string.
4151 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
4152 avoiding the need to install special zones in a real server. This is
4153 backwards compatible; if it can't find the fake resolver, it drops back.
4154 Thus, both old and new test suites can be run.
4156 TF/02 Added util/ratelimit.pl
4158 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
4159 clock is set back in time.