785d59bed05b40949ef1a62aeb53538e251a9ca7
[exim.git] / doc / doc-txt / ChangeLog
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.
6
7
8 Exim version 4.92
9 -----------------
10
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.
13
14 JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
15 non-signal-safe functions being used.
16
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.
20
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.
24
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.
31
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.
34
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.
42
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".
45
46 JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
47 legitimate.
48
49 JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
50 Previously this would segfault.
51
52 JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
53 segfault.
54
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.
61
62 JH/12 Add client-ip info to non-pass iprev ${authres } lines.
63
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).
68
69 JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
70
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.
75
76 JH/16 Fix ARC verification to do AS checks in reverse order.
77
78 JH/17 Support a "tls" option on the ${readsocket } expansion item.
79
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.
83
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.
87
88 PP/02 Let -n work with printing macros too, not just options.
89
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.
94
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.
98
99 PP/04 Documentation: current string operators work on bytes, not codepoints.
100
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.
106
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.
110
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.
114
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.
118
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.
122
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).
127
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.
131
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.
136
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.
139
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.
144
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.
148
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.
153
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.
157
158 JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
159 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
160 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
161 GNUTLS_SEC_PARAM_MEDIUM.
162
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.
165
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.
169
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.
175
176 JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
177
178 JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
179 cipher-suites, an error can be left on the stack even for a succeeding
180 accept; this results in impossible error messages when a later operation
181 actually does fail.
182
183
184 Exim version 4.91
185 -----------------
186
187 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
188 When redis_servers is set to a list of > 1 element, and the Redis servers
189 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
190 case of MOVED into a DEFER case instead, thus moving the query onto the
191 next server in the list. For a cluster of N elements, all N servers must
192 be defined in redis_servers.
193
194 GF/02 Catch and remove uninitialized value warning in exiqsumm
195 Check for existence of @ARGV before looking at $ARGV[0]
196
197 JH/01 Replace the store_release() internal interface with store_newblock(),
198 which internalises the check required to safely use the old one, plus
199 the allocate and data copy operations duplicated in both (!) of the
200 extant use locations.
201
202 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
203 modifier. This matches the restriction on the commandline.
204
205 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
206 Previously only the last row was returned.
207
208 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
209 we assumed that tags in the header were well-formed, and parsed the
210 element content after inspecting only the first char of the tag.
211 Assumptions at that stage could crash the receive process on malformed
212 input.
213
214 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
215 While running the DKIM ACL we operate on the Permanent memory pool so that
216 variables created with "set" persist to the DATA ACL. Also (at any time)
217 DNS lookups that fail create cache records using the Permanent pool. But
218 expansions release any allocations made on the current pool - so a dnsdb
219 lookup expansion done in the DKIM ACL releases the memory used for the
220 DNS negative-cache, and bad things result. Solution is to switch to the
221 Main pool for expansions.
222 While we're in that code, add checks on the DNS cache during store_reset,
223 active in the testsuite.
224 Problem spotted, and debugging aided, by Wolfgang Breyha.
225
226 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
227 When none of the hosts presented to a transport match an already-open
228 connection, close it and proceed with the list. Previously we would
229 queue the message. Spotted by Lena with Yahoo, probably involving
230 round-robin DNS.
231
232 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
233 Previously a spurious "250 OK id=" response was appended to the proper
234 failure response.
235
236 JH/08 The "support for" informational output now, which built with Content
237 Scanning support, has a line for the malware scanner interfaces compiled
238 in. Interface can be individually included or not at build time.
239
240 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
241 by the template makefile "src/EDITME". The "STREAM" support for an older
242 ClamAV interface method is removed.
243
244 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
245 rows affected is given instead).
246
247 JH/11 The runtime Berkeley DB library version is now additionally output by
248 "exim -d -bV". Previously only the compile-time version was shown.
249
250 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
251 SMTP connection. Previously, when one had more receipients than the
252 first, an abortive onward connection was made. Move to full support for
253 multiple onward connections in sequence, handling cutthrough connection
254 for all multi-message initiating connections.
255
256 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
257 routers. Previously, a multi-recipient message would fail to match the
258 onward-connection opened for the first recipient, and cause its closure.
259
260 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
261 a timeout on read on a GnuTLS initiating connection, resulting in the
262 initiating connection being dropped. This mattered most when the callout
263 was marked defer_ok. Fix to keep the two timeout-detection methods
264 separate.
265
266 JH/15 Relax results from ACL control request to enable cutthrough, in
267 unsupported situations, from error to silently (except under debug)
268 ignoring. This covers use with PRDR, frozen messages, queue-only and
269 fake-reject.
270
271 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
272
273 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
274 metadata, resulting in a crash in free().
275
276 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
277 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
278 Broken also in d185889f4, with init system revamp.
279
280 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
281 Previously we abruptly closed the connection after reading a malware-
282 found indication; now we go on to read the "scan ok" response line,
283 and send a quit.
284
285 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
286 ACL. Previously, a crash would result.
287
288 JH/19 Speed up macro lookups during configuration file read, by skipping non-
289 macro text after a replacement (previously it was only once per line) and
290 by skipping builtin macros when searching for an uppercase lead character.
291
292 JH/20 DANE support moved from Experimental to mainline. The Makefile control
293 for the build is renamed.
294
295 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
296 was allocated for every new TLS startup, meaning one per message. Fix
297 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
298
299 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
300 reported the original. Fix to report (as far as possible) the ACL
301 result replacing the original.
302
303 JH/23 Fix memory leak during multi-message connections using STARTTLS under
304 OpenSSL. Certificate information is loaded for every new TLS startup,
305 and the resources needed to be freed.
306
307 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
308
309 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
310 was not propagated.
311
312 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
313 DATA response info to the (existing) per-recipient response info for
314 the "C=" log element. It can have useful tracking info from the
315 destination system. Patch from Simon Arlott.
316
317 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
318 length value. Previously this would segfault.
319
320 HS/02 Support Avast multiline protoocol, this allows passing flags to
321 newer versions of the scanner.
322
323 JH/28 Ensure that variables possibly set during message acceptance are marked
324 dead before release of memory in the daemon loop. This stops complaints
325 about them when the debug_store option is enabled. Discovered specifically
326 for sender_rate_period, but applies to a whole set of variables.
327 Do the same for the queue-runner and queue-list loops, for variables set
328 from spool message files. Do the same for the SMTP per-message loop, for
329 certain variables indirectly set in ACL operations.
330
331 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
332 as a multi-recipient message from a mailinglist manager). The coding had
333 an arbitrary cutoff number of characters while checking for more input;
334 enforced by writing a NUL into the buffer. This corrupted long / fast
335 input. The problem was exposed more widely when more pipelineing of SMTP
336 responses was introduced, and one Exim system was feeding another.
337 The symptom is log complaints of SMTP syntax error (NUL chars) on the
338 receiving system, and refused recipients seen by the sending system
339 (propating to people being dropped from mailing lists).
340 Discovered and pinpointed by David Carter.
341
342 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
343 replaced by the ${authresults } expansion.
344
345 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
346
347 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
348 allows proper process termination in container environments.
349
350 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
351 Previously the "final dot" had a newline after it; ensure it is CR,LF.
352
353 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
354 and "err_perm", deprecated since 4.83 when the RFC-defined words
355 "temperror" and "permerror" were introduced.
356
357 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
358 transport-filters or DKIM-signing. The restriction was lost in the
359 consolidation of verify-callout and delivery SMTP handling.
360 Extend the restriction to also cover ARC-signing.
361
362 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
363 in defer=pass mode supply a 450 to the initiator. Previously the message
364 would be spooled.
365
366 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
367 tls_require_ciphers is used as before.
368
369 HS/03 Malware Avast: Better match the Avast multiline protocol. Add
370 "pass_unscanned". Only tmpfails from the scanner are written to
371 the paniclog, as they may require admin intervention (permission
372 denied, license issues). Other scanner errors (like decompression
373 bombs) do not cause a paniclog entry.
374
375 JH/36 Fix reinitialisation of DKIM logging variable between messages.
376 Previously it was possible to log spurious information in receive log
377 lines.
378
379 JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
380 triggered odd behaviour from Outlook Express clients.
381
382 PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
383 suffix list.
384
385 JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
386 since the IETF WG has not yet settled on that versus the original
387 "bare" representation.
388
389 JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
390 Previously the millisecond value corrupted the output.
391 Fix also for syslog_pid=no and log_selector +pid, for which the pid
392 corrupted the output.
393
394
395 Exim version 4.90
396 -----------------
397
398 JH/01 Rework error string handling in TLS interface so that the caller in
399 more cases is responsible for logging. This permits library-sourced
400 string to be attached to addresses during delivery, and collapses
401 pairs of long lines into single ones.
402
403 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
404 during configuration. Wildcards are allowed and expanded.
405
406 JH/02 Rework error string handling in DKIM to pass more info back to callers.
407 This permits better logging.
408
409 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
410 do not close it down and have the child transport start it up again on
411 the passed-on TCP connection. Instead, proxy the child (and any
412 subsequent ones) for TLS via a unix-domain socket channel. Logging is
413 affected: the continued delivery log lines do not have any DNSSEC, TLS
414 Certificate or OCSP information. TLS cipher information is still logged.
415
416 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
417 identical IP addresses on different listening ports. Will also affect
418 "exiwhat" output.
419
420 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
421 add noisy ifdef guards to special-case this sillyness.
422 Patch from Bernd Kuhls.
423
424 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
425 than 255 are no longer allowed.
426
427 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
428 Disable the session-cache too, which might reduce our load. Since we
429 currrectly use a new context for every connection, both as server and
430 client, there is no benefit for these.
431 GnuTLS appears to not support tickets server-side by default (we don't
432 call gnutls_session_ticket_enable_server()) but client side is enabled
433 by default on recent versions (3.1.3 +) unless the PFS priority string
434 is used (3.2.4 +).
435
436 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
437 <https://reproducible-builds.org/specs/source-date-epoch/>.
438
439 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
440 the check for any unsuccessful recipients did not notice the limit, and
441 erroneously found still-pending ones.
442
443 JH/08 Pipeline CHUNKING command and data together, on kernels that support
444 MSG_MORE. Only in-clear (not on TLS connections).
445
446 JH/09 Avoid using a temporary file during transport using dkim. Unless a
447 transport-filter is involved we can buffer the headers in memory for
448 creating the signature, and read the spool data file once for the
449 signature and again for transmission.
450
451 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
452 4.77 as the kernel support then wasn't solid, having issues in 64bit
453 mode. Now, it's been long enough. Add support for FreeBSD also.
454
455 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
456 case where the routing stage had gathered several addresses to send to
457 a host before calling the transport for the first, we previously failed
458 to close down TLS in the old transport process before passing the TCP
459 connection to the new process. The new one sent a STARTTLS command
460 which naturally failed, giving a failed delivery and bloating the retry
461 database. Investigation and fix prototype from Wolfgang Breyha.
462
463 JH/12 Fix check on SMTP command input synchronisation. Previously there were
464 false-negatives in the check that the sender had not preempted a response
465 or prompt from Exim (running as a server), due to that code's lack of
466 awareness of the SMTP input buffering.
467
468 PP/04 Add commandline_checks_require_admin option.
469 Exim drops privileges sanely, various checks such as -be aren't a
470 security problem, as long as you trust local users with access to their
471 own account. When invoked by services which pass untrusted data to
472 Exim, this might be an issue. Set this option in main configuration
473 AND make fixes to the calling application, such as using `--` to stop
474 processing options.
475
476 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
477 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
478 responses to those, into a single TLS record each way (this usually means
479 a single packet). As a side issue, smtp_enforce_sync now works on TLS
480 connections.
481
482 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
483 affects you only if you're dancing at the edge of the param size limits.
484 If you are, and this message makes sense to you, then: raise the
485 configured limit or use OpenSSL 1.1. Nothing we can do for older
486 versions.
487
488 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
489 cmdline element to get the documented default one. Previously it was
490 inaccessible.
491
492 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
493 are unsuable for non-message-specific reasons - eg. connection timeout,
494 banner-time rejection.
495
496 JH/16 Fix logging of delivery remote port, when specified by router, under
497 callout/hold.
498
499 PP/06 Repair manualroute's ability to take options in any order, even if one
500 is the name of a transport.
501 Fixes bug 2140.
502
503 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
504
505 JH/17 Change the list-building routines interface to use the expanding-string
506 triplet model, for better allocation and copying behaviour.
507
508 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
509 Previously it was constructed the first time a possibly-matching string
510 was met in the configuration file input during startup; now it is done
511 during compilation.
512
513 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
514 compatible one, to avoid the (poorly documented) possibility of a config
515 file in the working directory redirecting the DB files, possibly correpting
516 some existing file. CVE-2017-10140 assigned for BDB.
517
518 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
519 cache-hot. Previously, although the result was properly cached, the
520 initial verify call returned a defer.
521
522 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
523 the main verify for receipient in uncached-mode.
524
525 JH/22 Retire historical build files to an "unsupported" subdir. These are
526 defined as "ones for which we have no current evidence of testing".
527
528 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
529 if present. Previously it was ignored.
530
531 JH/24 Start using specified-initialisers in C structure init coding. This is
532 a C99 feature (it's 2017, so now considered safe).
533
534 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
535 if was a fixed-sized field and bitmask ops via macros; it is now more
536 extensible.
537
538 PP/07 GitHub PR 56: Apply MariaDB build fix.
539 Patch provided by Jaroslav Škarvada.
540
541 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
542 during Coverity cleanups [4.87 JH/47]
543 Diagnosis and fix provided by Michael Fischer v. Mollard.
544
545 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
546 the right size to place the terminating semicolon on its own folded
547 line, the header hash was calculated to an incorrect value thanks to
548 the (relaxed) space the fold became.
549
550 HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
551 and confused the parent.
552
553 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
554 which could crash as a result. This could lead to undeliverable messages.
555
556 JH/28 Logging: "next input sent too soon" now shows where input was truncated
557 for log purposes.
558
559 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
560 matters on fast-turnover and PID-randomising systems, which were getting
561 out-of-order delivery.
562
563 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
564 a possibly-overlapping copy. The symptom was that "Remote host closed
565 connection in response to HELO" was logged instead of the actual 4xx
566 error for the HELO.
567
568 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
569 Previously only that bufferd was discarded, resulting in SYMTP command
570 desynchronisation.
571
572 JH/32 DKIM: when a message has multiple signatures matching an identity given
573 in dkim_verify_signers, run the dkim acl once for each. Previously only
574 one run was done. Bug 2189.
575
576 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
577 "panic the current process" to "deliberately defer". The panic log is
578 still written with the problem list name; the mail and reject logs now
579 get a temp-reject line for the message that was being handled, saying
580 something like "domains check lookup or other defer". The SMTP 451
581 message is still "Temporary local problem".
582
583 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
584 A crafted sequence of BDAT commands could result in in-use memory beeing
585 freed. CVE-2017-16943.
586
587 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
588 from SMTP input. Previously it was always done; now only done for DATA
589 and not BDAT commands. CVE-2017-16944.
590
591 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
592 to the message (such as an overlong header line). Previously this was
593 not done and we did not exit BDAT mode. Followon from the previous item
594 though a different problem.
595
596
597 Exim version 4.89
598 -----------------
599
600 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
601 than -2003 did; needs libidn2 in addition to libidn.
602
603 JH/02 The path option on a pipe transport is now expanded before use.
604
605 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
606 Patch provided by "Björn", documentation fix added too.
607
608 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
609 missing a wire-to-host endian conversion.
610
611 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
612 close after a BDAT command line could be taken as a following command,
613 giving a synch failure. Fix by only checking for synch immediately
614 before acknowledging the chunk.
615
616 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
617 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
618 macro. Patches provided by Josh Soref.
619
620 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
621 Previously we did not; the RFC seems ambiguous and VRFY is not listed
622 by IANA as a service extension. However, John Klensin suggests that we
623 should.
624
625 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
626 the dkim code may be unix-mode line endings rather than smtp wire-format
627 CRLF, so prepend a CR to any bare LF.
628
629 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
630 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
631
632 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
633 the first were themselves being wrongly included in the feed into dkim
634 processing; with most chunk sizes in use this resulted in an incorrect
635 body hash calculated value.
636
637 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
638 DKIM signature block, for verification. Although advised against by
639 standards it is specifically not ruled illegal.
640
641 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
642
643 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
644 missing a body hash (the bh= tag).
645
646 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
647 It seems that HAProxy sends the Proxy Protocol information in clear and
648 only then does a TLS startup, so do the same.
649
650 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
651 TCP connections (such as for Spamd) unless the daemon successfully set
652 Fast Open mode on its listening sockets. This fixes breakage seen on
653 too-old kernels or those not configured for Fast Open, at the cost of
654 requiring both directions being enabled for TFO, and TFO never being used
655 by non-daemon-related Exim processes.
656
657 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
658 endings, at least on the first header line. Try to canonify any that get
659 past that check, despite the cost.
660
661 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
662 now limited to an arbitrary five deep, while parsing addresses with the
663 strip_excess_angle_brackets option enabled.
664
665 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
666 instead leave the unprompted TLS handshake in socket buffer for the
667 TLS library to consume.
668
669 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
670
671 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
672
673 JH/16 Drop variables when they go out of scope. Memory management drops a whole
674 region in one operation, for speed, and this leaves assigned pointers
675 dangling. Add checks run only under the testsuite which checks all
676 variables at a store-reset and panics on a dangling pointer; add code
677 explicitly nulling out all the variables discovered. Fixes one known
678 bug: a transport crash, where a dangling pointer for $sending_ip_address
679 originally assigned in a verify callout, is re-used.
680
681 PP/06 Drop '.' from @INC in various Perl scripts.
682
683 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
684
685 PP/08 Reduce a number of compilation warnings under clang; building with
686 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
687 should be warning-free.
688
689 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
690
691 HS/01 Fix portability problems introduced by PP/08 for platforms where
692 realloc(NULL) is not equivalent to malloc() [SunOS et al].
693
694 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
695 chunk. This allows us to accept broken chunked messages. We need a more
696 general solution here.
697
698 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
699 already-broken messages in the queue.
700
701 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
702
703 JH/19 Fix reference counting bug in routing-generated-address tracking.
704
705
706 Exim version 4.88
707 -----------------
708
709 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
710 supports it and a size is available (ie. the sending peer gave us one).
711
712 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
713 years of being deprecated). The replacements are the ACLs
714 acl_smtp_mime and acl_not_smtp_mime.
715
716 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
717 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
718 or even an in-clear connection were permitted. Now, if the host lookup
719 was dnssec and dane was requested then the host is only used if the
720 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
721 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
722 if one fails this test.
723 This means that a poorly-configured remote DNS will make it incommunicado;
724 but it protects against a DNS-interception attack on it.
725
726 JH/04 Bug 1810: make continued-use of an open smtp transport connection
727 non-noisy when a race steals the message being considered.
728
729 JH/05 If main configuration option tls_certificate is unset, generate a
730 self-signed certificate for inbound TLS connections.
731
732 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
733 in rewrites and routers.
734
735 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
736 and logged a warning sing 4.83; now they are a configuration file error.
737
738 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
739 (lacking @domain). Apply the same qualification processing as RCPT.
740
741 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
742
743 JH/10 Support ${sha256:} applied to a string (as well as the previous
744 certificate).
745
746 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
747 a cutthrough deliver is pending, as we always want to make a connection.
748 This also avoids re-routing the message when later placing the cutthrough
749 connection after a verify cache hit.
750 Do not update it with the verify result either.
751
752 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
753 when routing results in more than one destination address.
754
755 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
756 signing (which inhibits the cutthrough capability). Previously only
757 the presence of an option was tested; now an expansion evaluating as
758 empty is permissible (obviously it should depend only on data available
759 when the cutthrough connection is made).
760
761 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
762 the relevant preceding SMTP command did not note the pipelining mode.
763
764 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
765 Previously they were not counted.
766
767 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
768 as one having no matching records. Previously we deferred the message
769 that needed the lookup.
770
771 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
772 distinguished as "(=".
773
774 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
775 for missing MX records. Previously it only worked for missing A records.
776
777 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
778
779 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
780 after the data-go-ahead and data-ack. Patch from Jason Betts.
781
782 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
783 even for a "none" policy. Patch from Tony Meyer.
784
785 JH/22 Fix continued use of a connection for further deliveries. If a port was
786 specified by a router, it must also match for the delivery to be
787 compatible.
788
789 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
790 When one of the recipients of a message was unsuitable for the connection
791 (has no matching addresses), we lost track of needing to mark it
792 deferred. As a result mail would be lost.
793
794 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
795
796 JH/25 Decoding ACL controls is now done using a binary search; the source code
797 takes up less space and should be simpler to maintain. Merge the ACL
798 condition decode tables also, with similar effect.
799
800 JH/26 Fix problem with one_time used on a redirect router which returned the
801 parent address unchanged. A retry would see the parent address marked as
802 delivered, so not attempt the (identical) child. As a result mail would
803 be lost.
804
805 JH/27 Fix a possible security hole, wherein a process operating with the Exim
806 UID can gain a root shell. Credit to http://www.halfdog.net/ for
807 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
808 itself :(
809
810 JH/28 Enable {spool,log} filesystem space and inode checks as default.
811 Main config options check_{log,spool}_{inodes,space} are now
812 100 inodes, 10MB unless set otherwise in the configuration.
813
814 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
815 Previously it only applied to the main-section connection policy
816 options.
817
818 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
819
820 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
821 by me. Added RFC7919 DH primes as an alternative.
822
823 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
824 are not in the system include path.
825
826 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
827 GnuTLS, when a session startup failed (eg because the client disconnected)
828 Exim did stdio operations after fclose. This was exposed by a recent
829 change which nulled out the file handle after the fclose.
830
831 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
832 signed directly by the cert-signing cert, rather than an intermediate
833 OCSP-signing cert. This is the model used by LetsEncrypt.
834
835 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
836
837 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
838 an incoming connection.
839
840 HS/02 Bug 1802: Do not half-close the connection after sending a request
841 to rspamd.
842
843 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
844 fallback to "prime256v1".
845
846 JH/34 SECURITY: Use proper copy of DATA command in error message.
847 Could leak key material. Remotely exploitable. CVE-2016-9963.
848
849
850 Exim version 4.87
851 -----------------
852
853 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
854 and 3.4.4 - once the server is enabled to respond to an OCSP request
855 it does even when not requested, resulting in a stapling non-aware
856 client dropping the TLS connection.
857
858 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
859 support variable-length bit vectors. No functional change.
860
861 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
862 The I= interface field on outgoing lines is now after the H= remote
863 host field, same as incoming lines. There is a separate
864 outgoing_interface log selector which allows you to disable the
865 outgoing I= field.
866
867 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
868 If not running log_selector +smtp_connection the mainlog would be held
869 open indefinitely after a "too many connections" event, including to a
870 deleted file after a log rotate. Leave the per net connection logging
871 leaving it open for efficiency as that will be quickly detected by the
872 check on the next write.
873
874 HS/01 Bug 1671: Fix post transport crash.
875 Processing the wait-<transport> messages could crash the delivery
876 process if the message IDs didn't exist for some reason. When
877 using 'split_spool_directory=yes' the construction of the spool
878 file name failed already, exposing the same netto behaviour.
879
880 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
881 mime_regex ACL conditions.
882
883 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
884 to DSN fail messages (bounces): remote IP, remote greeting, remote response
885 to HELO, local diagnostic string.
886
887 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
888 log line to debug. Even when configured with a tls authenticator many
889 client connections are expected to not authenticate in this way, so
890 an authenticate fail is not an error.
891
892 HS/02 Add the Exim version string to the process info. This way exiwhat
893 gives some more detail about the running daemon.
894
895 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
896 matter for fast-change records such as DNSBLs.
897
898 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
899 retry record, even if constant. There may be multiple transports with
900 different interface settings and the retry behaviour needs to be kept
901 distinct.
902
903 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
904
905 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
906
907 JH/10 Bug 840: fix log_defer_output option of pipe transport
908
909 JH/11 Bug 830: use same host for all RCPTS of a message, even under
910 hosts_randomize. This matters a lot when combined with mua_wrapper.
911
912 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
913 ${quote_pgsql:<string>} operator.
914
915 JH/13 Bug 1708: avoid misaligned access in cached lookup.
916
917 JH/14 Change header file name for freeradius-client. Relevant if compiling
918 with Radius support; from the Gentoo tree and checked under Fedora.
919
920 JH/15 Bug 1712: Introduce $prdr_requested flag variable
921
922 JH/16 Bug 1714: Permit an empty string as expansion result for transport
923 option transport_filter, meaning no filtering.
924
925 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
926
927 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
928 defaults to "*" (all hosts). The variable is now available when not built
929 with TLS, default unset, mainly to enable keeping the testsuite sane.
930 If a server certificate is not supplied (via tls_certificate) an error is
931 logged, and clients will find TLS connections fail on startup. Presumably
932 they will retry in-clear.
933 Packagers of Exim are strongly encouraged to create a server certificate
934 at installation time.
935
936 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
937 with the $config_file variable.
938
939 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
940 in transport context, after the attempt, and per-recipient. The latter type
941 is per host attempted. The event data is the error message, and the errno
942 information encodes the lookup type (A vs. MX) used for the (first) host,
943 and the trailing two digits of the smtp 4xx response.
944
945 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
946 to write to mainlog (or rejectlog, paniclog) in the window between file
947 creation and permissions/ownership being changed. Particularly affects
948 installations where exicyclog is run as root, rather than exim user;
949 result is that the running daemon panics and dies.
950
951 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
952
953 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
954 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
955 "pri" and "weight". Note that the previous implicit priority given by the
956 list order is no longer honoured.
957
958 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
959 for DKIM processing.
960
961 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
962 by defining SUPPORT_SOCKS.
963
964 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
965 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
966 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
967 variables are renamed to proxy_{local,external}_{address,port}.
968
969 JH/27 Move Internationalisation support from Experimental to mainline, enabled
970 for a build by defining SUPPORT_I18N
971
972 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
973 of the query string, and make ${quote_redis:} do that quoting.
974
975 JH/29 Move Events support from Experimental to mainline, enabled by default
976 and removable for a build by defining DISABLE_EVENT.
977
978 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
979
980 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
981 cached by the daemon.
982
983 JH/32 Move Redis support from Experimental to mainline, enabled for a build
984 by defining LOOKUP_REDIS. The libhiredis library is required.
985
986 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
987 keys are given for lookup.
988
989 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
990 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
991 only supported when built with TLS support. The PolarSSL SHA routines
992 are still used when the TLS library is too old for convenient support.
993
994 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
995 openssl_options), for security. OpenSSL forces this from version 1.1.0
996 server-side so match that on older versions.
997
998 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
999 allocation for $value could be released as the expansion processing
1000 concluded, but leaving the global pointer active for it.
1001
1002 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1003 and to use the domains and local_parts ACL conditions.
1004
1005 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1006 incorrectly not doubled on cutthrough transmission, hence seen as a
1007 body-termination at the receiving system - resulting in truncated mails.
1008 Commonly the sender saw a TCP-level error, and retransmitted the message
1009 via the normal store-and-forward channel. This could result in duplicates
1010 received - but deduplicating mailstores were liable to retain only the
1011 initial truncated version.
1012
1013 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
1014
1015 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1016
1017 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1018 we're in there, support oversigning also; bug 1309.
1019
1020 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1021
1022 HS/04 Add support for keep_environment and add_environment options.
1023
1024 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1025 either intentional arithmetic overflow during PRNG, or testing config-
1026 induced overflows.
1027
1028 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1029 delivery resulted in actual delivery. Cancel cutthrough before DATA
1030 stage.
1031
1032 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1033 rejects a recipient: pass the reject to the originator.
1034
1035 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1036 Many were false-positives and ignorable, but it's worth fixing the
1037 former class.
1038
1039 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1040 for the new environment-manipulation done at startup. Move the routines
1041 from being local to tls.c to being global via the os.c file.
1042
1043 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1044 an extract embedded as result-arg for a map, the first arg for extract
1045 is unavailable so we cannot tell if this is a numbered or keyed
1046 extraction. Accept either.
1047
1048
1049 Exim version 4.86
1050 -----------------
1051
1052 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1053 expanded.
1054
1055 JH/02 The smtp transport option "multi_domain" is now expanded.
1056
1057 JH/03 The smtp transport now requests PRDR by default, if the server offers
1058 it.
1059
1060 JH/04 Certificate name checking on server certificates, when exim is a client,
1061 is now done by default. The transport option tls_verify_cert_hostnames
1062 can be used to disable this per-host. The build option
1063 EXPERIMENTAL_CERTNAMES is withdrawn.
1064
1065 JH/05 The value of the tls_verify_certificates smtp transport and main options
1066 default to the word "system" to access the system default CA bundle.
1067 For GnuTLS, only version 3.0.20 or later.
1068
1069 JH/06 Verification of the server certificate for a TLS connection is now tried
1070 (but not required) by default. The verification status is now logged by
1071 default, for both outbound TLS and client-certificate supplying inbound
1072 TLS connections
1073
1074 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1075 sites use this now.
1076
1077 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1078 Status Notification (bounce) messages are now MIME format per RFC 3464.
1079 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1080 under the control of the dsn_advertise_hosts option, and routers may
1081 have a dsn_lasthop option.
1082
1083 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1084 default, modifiable by a malware= option. The list separator for
1085 the options can now be changed in the usual way. Bug 68.
1086
1087 JH/10 The smtp_receive_timeout main option is now expanded before use.
1088
1089 JH/11 The incoming_interface log option now also enables logging of the
1090 local interface on delivery outgoing connections.
1091
1092 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1093 if the interface and destination host and port all match.
1094
1095 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1096 /defer_ok option.
1097
1098 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1099 Patch from Andrew Lewis.
1100
1101 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
1102 now supports optional time-restrictions, weighting, and priority
1103 modifiers per server. Patch originally by <rommer@active.by>.
1104
1105 JH/16 The spamd_address main option now supports a mixed list of local
1106 and remote servers. Remote servers can be IPv6 addresses, and
1107 specify a port-range.
1108
1109 JH/17 Bug 68: The spamd_address main option now supports an optional
1110 timeout value per server.
1111
1112 JH/18 Bug 1581: Router and transport options headers_add/remove can
1113 now have the list separator specified.
1114
1115 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
1116 option values.
1117
1118 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
1119 under OpenSSL.
1120
1121 JH/21 Support for the A6 type of dns record is withdrawn.
1122
1123 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1124 rather than the verbs used.
1125
1126 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1127 from 255 to 1024 chars.
1128
1129 JH/24 Verification callouts now attempt to use TLS by default.
1130
1131 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
1132 are generic router options now. The defaults didn't change.
1133
1134 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1135 Original patch from Alexander Shikoff, worked over by JH.
1136
1137 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1138 files if ZCAT_COMMAND is not executable.
1139
1140 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
1141
1142 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1143
1144 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1145 Normally benign, it bites when the pair was led to by a CNAME;
1146 modern usage is to not canonicalize the domain to a CNAME target
1147 (and we were inconsistent anyway for A-only vs AAAA+A).
1148
1149 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1150
1151 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1152 when evaluating $sender_host_dnssec.
1153
1154 JH/31 Check the HELO verification lookup for DNSSEC, adding new
1155 $sender_helo_dnssec variable.
1156
1157 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1158
1159 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1160
1161 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1162
1163 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1164 documented as working, but never had. Support all but $spam_report.
1165
1166 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1167 added for tls authenticator.
1168
1169 HS/03 Add perl_taintmode main config option
1170
1171
1172 Exim version 4.85
1173 -----------------
1174
1175 TL/01 When running the test suite, the README says that variables such as
1176 no_msglog_check are global and can be placed anywhere in a specific
1177 test's script, however it was observed that placement needed to be near
1178 the beginning for it to behave that way. Changed the runtest perl
1179 script to read through the entire script once to detect and set these
1180 variables, reset to the beginning of the script, and then run through
1181 the script parsing/test process like normal.
1182
1183 TL/02 The BSD's have an arc4random API. One of the functions to induce
1184 adding randomness was arc4random_stir(), but it has been removed in
1185 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1186 function when detected.
1187
1188 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1189 cause callback expansion.
1190
1191 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1192 syntax errors in an expansion can be treated as a string instead of
1193 logging or causing an error, due to the internal use of bool_lax
1194 instead of bool when processing it.
1195
1196 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
1197 server certificates when making smtp deliveries.
1198
1199 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1200
1201 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1202
1203 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1204
1205 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1206 Merged patch from Sebastian Wiedenroth.
1207
1208 JH/05 Fix results-pipe from transport process. Several recipients, combined
1209 with certificate use, exposed issues where response data items split
1210 over buffer boundaries were not parsed properly. This eventually
1211 resulted in duplicates being sent. This issue only became common enough
1212 to notice due to the introduction of connection certificate information,
1213 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1214
1215 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1216 size buffer was used, resulting in syntax errors when an expansion
1217 exceeded it.
1218
1219 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1220 version 3.3.6 or later.
1221
1222 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1223 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1224 both become "event_action", the variables become $event_name, $event_data
1225 and $event_defer_errno. There is a new variable $verify_mode, usable in
1226 routers, transports and related events. The tls:cert event is now also
1227 raised for inbound connections, if the main configuration event_action
1228 option is defined.
1229
1230 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1231 early OCSP support, but no stapling (appears to be less than 1.0.0).
1232
1233 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1234 server certificate names available under the smtp transport option
1235 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1236 matches.
1237
1238 JH/10 Time-related extraction expansions from certificates now use the main
1239 option "timezone" setting for output formatting, and are consistent
1240 between OpenSSL and GnuTLS compilations. Bug 1541.
1241
1242 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1243 encoded parameter in the incoming message. Bug 1558.
1244
1245 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1246 include certificate info, eximon was claiming there were spoolfile
1247 syntax errors.
1248
1249 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1250
1251 JH/14 Log delivery-related information more consistently, using the sequence
1252 "H=<name> [<ip>]" wherever possible.
1253
1254 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1255 are problematic for Debian distribution, omit them from the release
1256 tarball.
1257
1258 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1259
1260 JH/16 Fix string representation of time values on 64bit time_t architectures.
1261 Bug 1561.
1262
1263 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1264 output list separator was used.
1265
1266
1267 Exim version 4.84
1268 -----------------
1269 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1270 checkers that were complaining about end of non-void function with no
1271 return.
1272
1273 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1274 This was a regression introduced in 4.83 by another bugfix.
1275
1276 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1277
1278 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1279 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1280
1281
1282 Exim version 4.83
1283 -----------------
1284
1285 TF/01 Correctly close the server side of TLS when forking for delivery.
1286
1287 When a message was received over SMTP with TLS, Exim failed to clear up
1288 the incoming connection properly after forking off the child process to
1289 deliver the message. In some situations the subsequent outgoing
1290 delivery connection happened to have the same fd number as the incoming
1291 connection previously had. Exim would try to use TLS and fail, logging
1292 a "Bad file descriptor" error.
1293
1294 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1295 utilities have not been installed.
1296
1297 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1298 temporary space as the ACL may create new global variables.
1299
1300 TL/01 LDAP support uses per connection or global context settings, depending
1301 upon the detected version of the libraries at build time.
1302
1303 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1304 to extract and use the src ip:port in logging and expansions as if it
1305 were a direct connection from the outside internet. PPv2 support was
1306 updated based on HAProxy spec change in May 2014.
1307
1308 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1309
1310 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1311 Properly escape header and check for NULL return.
1312
1313 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1314 not dns_use_dnssec.
1315
1316 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1317
1318 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1319 characters in header names, implemented as a verify condition.
1320 Contributed by Michael Fischer v. Mollard.
1321
1322 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1323 results permerror and temperror. Previous values are deprecated but
1324 still accepted. In a future release, err_perm and err_temp will be
1325 completely removed, which will be a backward incompatibility if the
1326 ACL tests for either of these two old results. Patch contributed by
1327 user bes-internal on the mailing list.
1328
1329 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1330
1331 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1332 selectors, in both main and reject logs.
1333
1334 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1335 failed delivery.
1336
1337 JH/07 Add malware type "sock" for talking to simple daemon.
1338
1339 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1340
1341 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1342 routers/transports under cutthrough routing.
1343
1344 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1345 numbers. Touch up "bool" conditional to keep the same definition.
1346
1347 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1348
1349 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1350
1351 JH/12 Expand items in router/transport headers_add or headers_remove lists
1352 individually rather than the list as a whole. Bug 1452.
1353
1354 Required for reasonable handling of multiple headers_ options when
1355 they may be empty; requires that headers_remove items with embedded
1356 colons must have them doubled (or the list-separator changed).
1357
1358 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1359 view the policy declared in the DMARC record. Currently, $dmarc_status
1360 is a combined value of both the record presence and the result of the
1361 analysis.
1362
1363 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1364
1365 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1366 dnslookup router and the smtp transport (applying to the forward
1367 lookup).
1368
1369 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1370 of ldap servers used for a specific lookup. Patch provided by Heiko
1371 Schlichting.
1372
1373 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1374 New variable $lookup_dnssec_authenticated for observability.
1375
1376 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1377 Patch submitted by Lars Timman.
1378
1379 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1380
1381 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1382 Requires trusted mode and valid format message id, aborts otherwise.
1383 Patch contributed by Heiko Schlichting.
1384
1385 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1386 certextract with support for various fields. Bug 1358.
1387
1388 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1389 is requested by default, modifiable by smtp transport option
1390 hosts_request_ocsp.
1391
1392 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1393 operate on certificate variables to give certificate fingerprints
1394 Also new ${sha256:cert_variable}.
1395
1396 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1397
1398 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1399 Christian Aistleitner.
1400
1401 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1402
1403 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1404 file. Patch from Wolfgang Breyha.
1405
1406 JH/25 Expand the coverage of the delivery $host and $host_address to
1407 client authenticators run in verify callout. Bug 1476.
1408
1409 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1410 align with daemon_smtp_ports. Bug 72.
1411
1412 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1413 support and error reporting did not work properly.
1414
1415 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1416 and is readable. Patch from Andrew Colin Kissa.
1417
1418 TL/14 Enhance documentation of ${run expansion and how it parses the
1419 commandline after expansion, particularly in the case when an
1420 unquoted variable expansion results in an empty value.
1421
1422 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1423
1424 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1425 by renaming away from it. Addresses GH issue 15, reported by
1426 Jasper Wallace.
1427
1428 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1429
1430 TL/15 SECURITY: prevent double expansion in math comparison functions
1431 (can expand unsanitized data). Not remotely exploitable.
1432 CVE-2014-2972
1433
1434
1435 Exim version 4.82
1436 -----------------
1437
1438 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1439
1440 PP/02 Make -n do something, by making it not do something.
1441 When combined with -bP, the name of an option is not output.
1442
1443 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1444 by GnuTLS.
1445
1446 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1447 $sender_host_name and config options to manage this, and basic check
1448 routines.
1449
1450 PP/05 DSCP support for outbound connections and control modifier for inbound.
1451
1452 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1453 (Only plugin which currently uses this is kerberos4, which nobody should
1454 be using, but we should make it available and other future plugins might
1455 conceivably use it, even though it would break NAT; stuff *should* be
1456 using channel bindings instead).
1457
1458 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1459 name; added for Sendmail compatibility; requires admin caller.
1460 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1461 just ignore it); requires trusted caller.
1462 Also parse but ignore: -Ac -Am -X<logfile>
1463 Bugzilla 1117.
1464
1465 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1466
1467 TL/02 Add +smtp_confirmation as a default logging option.
1468
1469 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1470 Patch by Magnus Holmgren from 2007-02-20.
1471
1472 TL/04 Bugzilla 1281 - Spec typo.
1473 Bugzilla 1283 - Spec typo.
1474 Bugzilla 1290 - Spec grammar fixes.
1475
1476 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1477
1478 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1479
1480 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1481 mailing list by by Dmitry Isaikin.
1482
1483 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1484
1485 JH/02 Support "G" suffix to numbers in ${if comparisons.
1486
1487 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1488
1489 NM/01 Bugzilla 1197 - Spec typo
1490 Bugzilla 1196 - Spec examples corrections
1491
1492 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1493
1494 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1495 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1496 function.
1497
1498 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1499 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1500
1501 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1502 "acl {{name}{arg}...}", and optional args on acl condition
1503 "acl = name arg..."
1504
1505 JH/05 Permit multiple router/transport headers_add/remove lines.
1506
1507 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1508
1509 JH/07 Avoid using a waiting database for a single-message-only transport.
1510 Performance patch from Paul Fisher. Bugzilla 1262.
1511
1512 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1513 Bugzilla 884.
1514
1515 JH/09 Add $headers_added variable, with content from use of ACL modifier
1516 add_header (but not yet added to the message). Bugzilla 199.
1517
1518 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1519 Pulled from Bugzilla 817 by Wolfgang Breyha.
1520
1521 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1522 CVE-2012-5671
1523 (nb: this is the same fix as in Exim 4.80.1)
1524
1525 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1526 authenticators.
1527
1528 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1529 for control.
1530
1531 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1532
1533 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1534 advertise SMTP AUTH mechanism to us, instead of a generic
1535 protocol violation error. Also, make Exim more robust to bad
1536 data from the Dovecot auth socket.
1537
1538 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1539
1540 When a queue runner is handling a message, Exim first routes the
1541 recipient addresses, during which it prunes them based on the retry
1542 hints database. After that it attempts to deliver the message to
1543 any remaining recipients. It then updates the hints database using
1544 the retry rules.
1545
1546 So if a recipient address works intermittently, it can get repeatedly
1547 deferred at routing time. The retry hints record remains fresh so the
1548 address never reaches the final cutoff time.
1549
1550 This is a fairly common occurrence when a user is bumping up against
1551 their storage quota. Exim had some logic in its local delivery code
1552 to deal with this. However it did not apply to per-recipient defers
1553 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1554
1555 This change adds a proper retry rule check during routing so that the
1556 final cutoff time is checked against the message's age. We only do
1557 this check if there is an address retry record and there is not a
1558 domain retry record; this implies that previous attempts to handle
1559 the address had the retry_use_local_parts option turned on. We use
1560 this as an approximation for the destination being like a local
1561 delivery, as in LMTP.
1562
1563 I suspect this new check makes the old local delivery cutoff check
1564 redundant, but I have not verified this so I left the code in place.
1565
1566 TF/02 Correct gecos expansion when From: is a prefix of the username.
1567
1568 Test 0254 submits a message to Exim with the header
1569
1570 Resent-From: f
1571
1572 When I ran the test suite under the user fanf2, Exim expanded
1573 the header to contain my full name, whereas it should have added
1574 a Resent-Sender: header. It erroneously treats any prefix of the
1575 username as equal to the username.
1576
1577 This change corrects that bug.
1578
1579 GF/01 DCC debug and logging tidyup
1580 Error conditions log to paniclog rather than rejectlog.
1581 Debug lines prefixed by "DCC: " to remove any ambiguity.
1582
1583 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1584
1585 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1586 Bug spotted by Jeremy Harris; was flawed since initial commit.
1587 Would have resulted in OCSP responses post-SNI triggering an Exim
1588 NULL dereference and crash.
1589
1590 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1591
1592 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1593 Bug detection, analysis and fix by Samuel Thibault.
1594 Bugzilla 1331, Debian bug #698092.
1595
1596 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1597
1598 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1599 Server implementation by Todd Lyons, client by JH.
1600 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1601 config variable "prdr_enable" controls whether the server
1602 advertises the facility. If the client requests PRDR a new
1603 acl_data_smtp_prdr ACL is called once for each recipient, after
1604 the body content is received and before the acl_smtp_data ACL.
1605 The client is controlled by both of: a hosts_try_prdr option
1606 on the smtp transport, and the server advertisement.
1607 Default client logging of deliveries and rejections involving
1608 PRDR are flagged with the string "PRDR".
1609
1610 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1611 fclose(). Diagnosis by Todd Lyons.
1612
1613 PP/17 Update configure.default to handle IPv6 localhost better.
1614 Patch by Alain Williams (plus minor tweaks).
1615 Bugzilla 880.
1616
1617 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1618 This is now consistent with GnuTLS, and is now documented: the
1619 previous undocumented portable approach to treating the option as
1620 unset was to force an expansion failure. That still works, and
1621 an empty string is now equivalent.
1622
1623 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1624 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1625 not performing validation itself.
1626
1627 PP/20 Added force_command boolean option to pipe transport.
1628 Patch from Nick Koston, of cPanel Inc.
1629
1630 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1631 Bugzilla 321, 823.
1632
1633 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1634
1635 PP/21 Fix eximon continuous updating with timestamped log-files.
1636 Broken in a format-string cleanup in 4.80, missed when I repaired the
1637 other false fix of the same issue.
1638 Report and fix from Heiko Schlichting.
1639 Bugzilla 1363.
1640
1641 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1642 Report from Prashanth Katuri.
1643
1644 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1645 It's SecureTransport, so affects any MacOS clients which use the
1646 system-integrated TLS libraries, including email clients.
1647
1648 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1649 using a MIME ACL for non-SMTP local injection.
1650 Report and assistance in diagnosis by Warren Baker.
1651
1652 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1653
1654 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1655
1656 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1657 last id that failed so it may be referenced in subsequent ACL's.
1658
1659 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1660 Alexander Miroch.
1661
1662 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1663 ldap library initialization, allowing self-signed CA's to be
1664 used. Also properly sets require_cert option later in code by
1665 using NULL (global ldap config) instead of ldap handle (per
1666 session). Bug diagnosis and testing by alxgomz.
1667
1668 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1669 the src/util/ subdirectory.
1670
1671 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1672 renamed to Transport Post Delivery Action by Jeremy Harris, as
1673 EXPERIMENTAL_TPDA.
1674
1675 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1676 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1677 redis_servers = needs to be configured which will be used by the redis
1678 lookup. Patch from Warren Baker, of The Packet Hub.
1679
1680 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1681
1682 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1683 hostname or reverse DNS when processing a host list. Used suggestions
1684 from multiple comments on this bug.
1685
1686 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1687
1688 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1689 Missed a few lines, added it to make the runtest require no keyboard
1690 interaction.
1691
1692 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1693 contains upper case chars. Make router use caseful_local_part.
1694
1695 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1696 support when GnuTLS has been built with p11-kit.
1697
1698
1699 Exim version 4.80.1
1700 -------------------
1701
1702 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1703 CVE-2012-5671
1704 This, or similar/improved, will also be change PP/11 of 4.82.
1705
1706
1707 Exim version 4.80
1708 -----------------
1709
1710 PP/01 Handle short writes when writing local log-files.
1711 In practice, only affects FreeBSD (8 onwards).
1712 Bugzilla 1053, with thanks to Dmitry Isaikin.
1713
1714 NM/01 Bugzilla 949 - Documentation tweak
1715
1716 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1717 improved.
1718
1719 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1720
1721 PP/02 Implemented gsasl authenticator.
1722
1723 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1724
1725 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1726 `pkg-config foo` for cflags/libs.
1727
1728 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1729 with rest of GSASL and with heimdal_gssapi.
1730
1731 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1732 `pkg-config foo` for cflags/libs for the TLS implementation.
1733
1734 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1735 properties get this fed in as external SSF. A number of robustness
1736 and debugging improvements to the cyrus_sasl authenticator.
1737
1738 PP/08 cyrus_sasl server now expands the server_realm option.
1739
1740 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1741 Patch by Jeremy Harris.
1742
1743 PP/10 Added dbmjz lookup type.
1744
1745 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1746
1747 PP/12 MAIL args handles TAB as well as SP, for better interop with
1748 non-compliant senders.
1749 Analysis and variant patch by Todd Lyons.
1750
1751 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1752 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1753 Patch from Dirk Mueller <dmueller@suse.com>
1754
1755 PP/13 tls_peerdn now print-escaped for spool files.
1756 Observed some $tls_peerdn in wild which contained \n, which resulted
1757 in spool file corruption.
1758
1759 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1760 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1761 or write after TLS renegotiation, which otherwise led to messages
1762 "Got SSL error 2".
1763
1764 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1765 as a tracking header (ie: a signed header comes before the signature).
1766 Patch from Wolfgang Breyha.
1767
1768 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1769 comma-sep list; embedded commas doubled.
1770
1771 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1772
1773 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1774 diagnostics.
1775 Report and patch from Dmitry Banschikov.
1776
1777 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1778 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1779 failures. We appear to now support TLS1.1+ with Exim.
1780
1781 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1782 lets Exim select keys and certificates based upon TLS SNI from client.
1783 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1784 before an outbound SMTP session. New log_selector, +tls_sni.
1785
1786 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1787 NULL dereference. Report and patch from Alun Jones.
1788
1789 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1790 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1791 Not seeing resolver debug output on NetBSD, but suspect this is a
1792 resolver implementation change.
1793
1794 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1795 Left warnings. Added "eximon gdb" invocation mode.
1796
1797 PP/21 Defaulting "accept_8bitmime" to true, not false.
1798
1799 PP/22 Added -bw for inetd wait mode support.
1800
1801 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1802 locate the relevant includes and libraries. Made this the default.
1803
1804 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1805 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1806
1807 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1808 This may cause build issues on older platforms.
1809
1810 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1811 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1812 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1813 Added SNI support via GnuTLS too.
1814 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1815
1816 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1817
1818 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1819 Applied second patch from Janne, implementing suggestion to default
1820 multiple-strings-in-record handling to match SPF spec.
1821
1822 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1823
1824 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1825 read-only, out of scope).
1826 Patch from Wolfgang Breyha, report from Stuart Northfield.
1827
1828 PP/29 Fix three issues highlighted by clang analyser static analysis.
1829 Only crash-plausible issue would require the Cambridge-specific
1830 iplookup router and a misconfiguration.
1831 Report from Marcin Mirosław.
1832
1833 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1834
1835 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1836 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1837 As part of this, removing so much warning spew let me fix some minor
1838 real issues in debug logging.
1839
1840 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1841 assignment on my part. Fixed.
1842
1843 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1844 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1845 Janne Snabb (who went above and beyond: thank you).
1846
1847 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1848 string otherwise requires a connection and a bunch more work and it's
1849 relatively easy to get wrong. Should also expose TLS library linkage
1850 problems.
1851
1852 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1853 64-bit ${eval} (JH/03).
1854
1855 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1856 GNU libc to support some of the 64-bit stuff, should not lead to
1857 conflicts. Defined before os.h is pulled in, so if a given platform
1858 needs to override this, it can.
1859
1860 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1861 protection layer was required, which is not implemented.
1862 Bugzilla 1254, patch from Wolfgang Breyha.
1863
1864 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1865 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1866 tls_dhparam take prime identifiers. Also unbreak combination of
1867 OpenSSL+DH_params+TLSSNI.
1868
1869 PP/39 Disable SSLv2 by default in OpenSSL support.
1870
1871
1872 Exim version 4.77
1873 -----------------
1874
1875 PP/01 Solaris build fix for Oracle's LDAP libraries.
1876 Bugzilla 1109, patch from Stephen Usher.
1877
1878 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1879
1880 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1881 whitespace trailer
1882
1883 TF/02 Fix a couple more cases where we did not log the error message
1884 when unlink() failed. See also change 4.74-TF/03.
1885
1886 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1887 lock up or crash if it happened to be inside a call to libc when it
1888 got a SIGUSR1 from exiwhat.
1889
1890 The SIGUSR1 handler appends the current process status to the process
1891 log which is later printed by exiwhat. It used to use the general
1892 purpose logging code to do this, but several functions it calls are
1893 not safe for signals.
1894
1895 The new output code in the SIGUSR1 handler is specific to the process
1896 log, and simple enough that it's easy to inspect for signal safety.
1897 Removing some special cases also simplifies the general logging code.
1898 Removing the spurious timestamps from the process log simplifies
1899 exiwhat.
1900
1901 TF/04 Improved ratelimit ACL condition.
1902
1903 The /noupdate option has been deprecated in favour of /readonly which
1904 has clearer semantics. The /leaky, /strict, and /readonly update modes
1905 are mutually exclusive. The update mode is no longer included in the
1906 database key; it just determines when the database is updated. (This
1907 means that when you upgrade Exim will forget old rate measurements.)
1908
1909 Exim now checks that the per_* options are used with an update mode that
1910 makes sense for the current ACL. For example, when Exim is processing a
1911 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1912 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1913 must specify per_mail/readonly. If you omit the update mode it defaults to
1914 /leaky where that makes sense (as before) or /readonly where required.
1915
1916 The /noupdate option is now undocumented but still supported for
1917 backwards compatibility. It is equivalent to /readonly except that in
1918 ACLs where /readonly is required you may specify /leaky/noupdate or
1919 /strict/noupdate which are treated the same as /readonly.
1920
1921 A useful new feature is the /count= option. This is a generalization
1922 of the per_byte option, so that you can measure the throughput of other
1923 aggregate values. For example, the per_byte option is now equivalent
1924 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1925
1926 The per_rcpt option has been generalized using the /count= mechanism
1927 (though it's more complicated than the per_byte equivalence). When it is
1928 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1929 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1930 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1931 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1932 Note that using per_rcpt with a non-readonly update mode in more than
1933 one ACL will cause the recipients to be double-counted. (The per_mail
1934 and per_byte options don't have this problem.)
1935
1936 The handling of very low rates has changed slightly. If the computed rate
1937 is less than the event's count (usually one) then this event is the first
1938 after a long gap. In this case the rate is set to the same as this event's
1939 count, so that the first message of a spam run is counted properly.
1940
1941 The major new feature is a mechanism for counting the rate of unique
1942 events. The new per_addr option counts the number of different
1943 recipients that someone has sent messages to in the last time period. It
1944 behaves like per_rcpt if all the recipient addresses are different, but
1945 duplicate recipient addresses do not increase the measured rate. Like
1946 the /count= option this is a general mechanism, so the per_addr option
1947 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1948 example, measure the rate that a client uses different sender addresses
1949 with the options per_mail/unique=$sender_address. There are further
1950 details in the main documentation.
1951
1952 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1953
1954 TF/06 Removed a few PCRE remnants.
1955
1956 TF/07 Automatically extract Exim's version number from tags in the git
1957 repository when doing development or release builds.
1958
1959 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1960 Bugzilla 879. Patch from Paul Fisher.
1961
1962 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1963 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1964 Bugzilla 97.
1965
1966 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1967
1968 PP/05 Variable $av_failed, true if the AV scanner deferred.
1969 Bugzilla 1078. Patch from John Horne.
1970
1971 PP/06 Stop make process more reliably on build failure.
1972 Bugzilla 1087. Patch from Heiko Schlittermann.
1973
1974 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1975 Bugzilla 1089. Patch from Heiko Schlittermann.
1976
1977 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1978 Bugzilla 1131. Patch from Holger Weiß.
1979
1980 PP/09 Handle IPv6 addresses with SPF.
1981 Bugzilla 860. Patch from Wolfgang Breyha.
1982
1983 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1984 Bugzilla 1156.
1985 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1986 Bugzilla 1095.
1987
1988 PP/11 match_* no longer expand right-hand-side by default.
1989 New compile-time build option, EXPAND_LISTMATCH_RHS.
1990 New expansion conditions, "inlist", "inlisti".
1991
1992 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1993
1994 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1995
1996 PP/14 fix log_write() format string regression from TF/03.
1997 Bugzilla 1152. Patch from Dmitry Isaikin.
1998
1999
2000 Exim version 4.76
2001 -----------------
2002
2003 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2004
2005 PP/02 Harmonised TLS library version reporting; only show if debugging.
2006 Layout now matches that introduced for other libraries in 4.74 PP/03.
2007
2008 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2009
2010 PP/04 New "dns_use_edns0" global option.
2011
2012 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2013 Bugzilla 1098.
2014
2015 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2016 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
2017
2018 TK/01 Updated PolarSSL code to 0.14.2.
2019 Bugzilla 1097. Patch from Andreas Metzler.
2020
2021 PP/07 Catch divide-by-zero in ${eval:...}.
2022 Fixes bugzilla 1102.
2023
2024 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2025 Bugzilla 1104.
2026
2027 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
2028 format-string attack -- SECURITY: remote arbitrary code execution.
2029
2030 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2031 time unintentionally subject to list matching rules, letting the header
2032 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2033 arbitrary string expansion). This allowed for information disclosure.
2034
2035 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2036 INT_MIN/-1 -- value coerced to INT_MAX.
2037
2038
2039 Exim version 4.75
2040 -----------------
2041
2042 NM/01 Workaround for PCRE version dependency in version reporting
2043 Bugzilla 1073
2044
2045 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2046 This fixes portability to compilers other than gcc, notably
2047 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2048
2049 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2050 makefiles for portability to HP-UX and POSIX correctness.
2051
2052 PP/01 Permit LOOKUP_foo enabling on the make command-line.
2053 Also via indented variable definition in the Makefile.
2054 (Debugging by Oliver Heesakkers).
2055
2056 PP/02 Restore caching of spamd results with expanded spamd_address.
2057 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2058
2059 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2060 Improves build reliability. Fix from: Frank Elsner
2061
2062 NM/02 Fix wide character breakage in the rfc2047 coding
2063 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2064
2065 NM/03 Allow underscore in dnslist lookups
2066 Fixes bug 1026. Patch from Graeme Fowler
2067
2068 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2069 Code patches from Adam Ciarcinski of NetBSD.
2070
2071 NM/04 Fixed exiqgrep to cope with mailq missing size issue
2072 Fixes bug 943.
2073
2074 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2075 is logged, to avoid truncation. Patch from John Horne.
2076
2077 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2078 Patch from Jakob Hirsch.
2079
2080 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2081 SQL string expansion failure details.
2082 Patch from Andrey Oktyabrski.
2083
2084 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2085 Patch from Simon Arlott.
2086
2087 PP/09 New lookups functionality failed to compile on old gcc which rejects
2088 extern declarations in function scope.
2089 Patch from Oliver Fleischmann
2090
2091 PP/10 Use sig_atomic_t for flags set from signal handlers.
2092 Check getgroups() return and improve debugging.
2093 Fixed developed for diagnosis in bug 927 (which turned out to be
2094 a kernel bug).
2095
2096 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2097 Patch from Mark Zealey.
2098
2099 PP/12 Bugzilla 1056: Improved spamd server selection.
2100 Patch from Mark Zealey.
2101
2102 PP/13 Bugzilla 1086: Deal with maildir quota file races.
2103 Based on patch from Heiko Schlittermann.
2104
2105 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2106 Patch from Uwe Doering, sign-off by Michael Haardt.
2107
2108 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2109 variable declaration deep within a block. Bug and patch from
2110 Dennis Davis.
2111
2112 PP/15 lookups-Makefile IRIX compatibility coercion.
2113
2114 PP/16 Make DISABLE_DKIM build knob functional.
2115
2116 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2117 Patch by Simon Arlott
2118
2119 TF/03 Fix valgrind.h portability to C89 compilers that do not support
2120 variable argument macros. Our copy now differs from upstream.
2121
2122
2123 Exim version 4.74
2124 -----------------
2125
2126 TF/01 Failure to get a lock on a hints database can have serious
2127 consequences so log it to the panic log.
2128
2129 TF/02 Log LMTP confirmation messages in the same way as SMTP,
2130 controlled using the smtp_confirmation log selector.
2131
2132 TF/03 Include the error message when we fail to unlink a spool file.
2133
2134 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2135 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2136 for maintaining out-of-tree patches for some time.
2137
2138 PP/01 Bugzilla 139: Documentation and portability issues.
2139 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2140 Handle per-OS dynamic-module compilation flags.
2141
2142 PP/02 Let /dev/null have normal permissions.
2143 The 4.73 fixes were a little too stringent and complained about the
2144 permissions on /dev/null. Exempt it from some checks.
2145 Reported by Andreas M. Kirchwitz.
2146
2147 PP/03 Report version information for many libraries, including
2148 Exim version information for dynamically loaded libraries. Created
2149 version.h, now support a version extension string for distributors
2150 who patch heavily. Dynamic module ABI change.
2151
2152 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2153 privilege escalation vulnerability whereby the Exim run-time user
2154 can cause root to append content of the attacker's choosing to
2155 arbitrary files.
2156
2157 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2158 (Wolfgang Breyha)
2159
2160 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2161 If dropping privileges for untrusted macros, we disabled normal logging
2162 on the basis that it would fail; for the Exim run-time user, this is not
2163 the case, and it resulted in successful deliveries going unlogged.
2164 Fixed. Reported by Andreas Metzler.
2165
2166
2167 Exim version 4.73
2168 -----------------
2169
2170 PP/01 Date: & Message-Id: revert to normally being appended to a message,
2171 only prepend for the Resent-* case. Fixes regression introduced in
2172 Exim 4.70 by NM/22 for Bugzilla 607.
2173
2174 PP/02 Include check_rfc2047_length in configure.default because we're seeing
2175 increasing numbers of administrators be bitten by this.
2176
2177 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2178
2179 PP/03 Bugzilla 994: added openssl_options main configuration option.
2180
2181 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2182
2183 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
2184
2185 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2186
2187 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
2188 without a peer certificate, leading to a segfault because of an
2189 assumption that peers always have certificates. Be a little more
2190 paranoid. Problem reported by Martin Tscholak.
2191
2192 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2193 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2194 NB: ClamAV planning to remove STREAM in "middle of 2010".
2195 CL also introduces -bmalware, various -d+acl logging additions and
2196 more caution in buffer sizes.
2197
2198 PP/09 Implemented reverse_ip expansion operator.
2199
2200 PP/10 Bugzilla 937: provide a "debug" ACL control.
2201
2202 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2203
2204 PP/12 Bugzilla 973: Implement --version.
2205
2206 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2207
2208 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2209
2210 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2211
2212 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2213 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2214 ignore trailing whitespace.
2215
2216 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2217
2218 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2219 "exim" to be used
2220
2221 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2222 Notification from Dr Andrew Aitchison.
2223
2224 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2225 ExtendedDetectionInfo response format.
2226 Notification from John Horne.
2227
2228 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2229 compatible.
2230
2231 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2232 XSL and documented dependency on system catalogs, with examples of how
2233 it normally works.
2234
2235 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2236 access.
2237
2238 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2239 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2240 configuration file which is writeable by the Exim user or group.
2241
2242 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2243 of configuration files to cover files specified with the -C option if
2244 they are going to be used with root privileges, not just the default
2245 configuration file.
2246
2247 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2248 option (effectively making it always true).
2249
2250 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2251 files to be used while preserving root privileges.
2252
2253 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2254 that rogue child processes cannot use them.
2255
2256 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2257 run-time user, instead of root.
2258
2259 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2260 Exim run-time user without dropping privileges.
2261
2262 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2263 result string, instead of calling string_vformat() twice with the same
2264 arguments.
2265
2266 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2267 for other users. Others should always drop root privileges if they use
2268 -C on the command line, even for a whitelisted configure file.
2269
2270 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2271
2272 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2273
2274
2275 Exim version 4.72
2276 -----------------
2277
2278 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2279 $data_path, and $header_path variables; fixed documentation bugs and
2280 typos
2281
2282 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2283 exipick to access non-standard spools, including the "frozen" queue
2284 (Finput)
2285
2286 NM/01 Bugzilla 965: Support mysql stored procedures.
2287 Patch from Alain Williams
2288
2289 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2290
2291 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2292 Patch from Andreas Metzler
2293
2294 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2295 Patch from Kirill Miazine
2296
2297 NM/05 Bugzilla 671: Added umask to procmail example.
2298
2299 JJ/03 installed exipick 20100323.0, fixing doc bug
2300
2301 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2302 directory. Notification and patch from Dan Rosenberg.
2303
2304 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2305
2306 TK/02 Improve log output when DKIM signing operation fails.
2307
2308 MH/01 Treat the transport option dkim_domain as a colon separated
2309 list, not as a single string, and sign the message with each element,
2310 omitting multiple occurences of the same signer.
2311
2312 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2313 Bugzilla 985, 986. Patch by Simon Arlott
2314
2315 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2316 Patch by Simon Arlott
2317
2318 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2319 MBX locking. Notification from Dan Rosenberg.
2320
2321
2322 Exim version 4.71
2323 -----------------
2324
2325 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2326
2327 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2328
2329 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2330
2331 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2332
2333 NM/04 Bugzilla 915: Flag broken perl installation during build.
2334
2335
2336 Exim version 4.70
2337 -----------------
2338
2339 TK/01 Added patch by Johannes Berg that expands the main option
2340 "spamd_address" if it starts with a dollar sign.
2341
2342 TK/02 Write list of recipients to X-Envelope-Sender header when building
2343 the mbox-format spool file for content scanning (suggested by Jakob
2344 Hirsch).
2345
2346 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2347 (http://www.dcc-servers.net/) support via dccifd. Activated by
2348 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2349
2350 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2351 by Mark Daniel Reidel <mr@df.eu>.
2352
2353 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2354 When building exim an external PCRE library is now needed -
2355 PCRE is a system library on the majority of modern systems.
2356 See entry on PCRE_LIBS in EDITME file.
2357
2358 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2359 conversation. Added nologin parameter to request.
2360 Patch contributed by Kirill Miazine.
2361
2362 TF/01 Do not log submission mode rewrites if they do not change the address.
2363
2364 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2365
2366 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2367 log files in place. Contributed by Roberto Lima.
2368
2369 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2370
2371 TF/03 Bugzilla 615: When checking the local_parts router precondition
2372 after a local_part_suffix or local_part_prefix option, Exim now
2373 does not use the address's named list lookup cache, since this
2374 contains cached lookups for the whole local part.
2375
2376 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2377 Robert Millan. Documentation is in experimental-spec.txt.
2378
2379 TF/04 Bugzilla 668: Fix parallel build (make -j).
2380
2381 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2382
2383 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2384 Patch provided by Jan Srzednicki.
2385
2386 TF/05 Leading white space used to be stripped from $spam_report which
2387 wrecked the formatting. Now it is preserved.
2388
2389 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2390 that they are available at delivery time.
2391
2392 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2393
2394 TF/08 TLS error reporting now respects the incoming_interface and
2395 incoming_port log selectors.
2396
2397 TF/09 Produce a more useful error message if an SMTP transport's hosts
2398 setting expands to an empty string.
2399
2400 NM/06 Bugzilla 744: EXPN did not work under TLS.
2401 Patch provided by Phil Pennock.
2402
2403 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2404 Patch provided by Richard Godbee.
2405
2406 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2407 acl_smtp_notquit, added index entry.
2408
2409 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2410 Patch provided by Eugene Bujak.
2411
2412 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2413 accept(). Patch provided by Maxim Dounin.
2414
2415 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2416 Patch provided by Phil Pennock.
2417
2418 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2419
2420 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2421 Patch provided by Brad "anomie" Jorsch.
2422
2423 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2424 Patch provided by Dean Brooks.
2425
2426 TK/05 Add native DKIM support (does not depend on external libraries).
2427
2428 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2429 Patch provided by Graeme Fowler.
2430
2431 NM/16 Bugzilla 851: Documentation example syntax fix.
2432
2433 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2434
2435 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2436 lsearch.
2437
2438 NM/19 Bugzilla 745: TLS version reporting.
2439 Patch provided by Phil Pennock.
2440
2441 NM/20 Bugzilla 167: bool: condition support.
2442 Patch provided by Phil Pennock.
2443
2444 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2445 clients. Patch provided by Phil Pennock.
2446
2447 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2448 Patch provided by Brad "anomie" Jorsch.
2449
2450 NM/23 Bugzilla 687: Fix misparses in eximstats.
2451 Patch provided by Heiko Schlittermann.
2452
2453 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2454 Patch provided by Heiko Schlittermann.
2455
2456 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2457 plus update to original patch.
2458
2459 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2460
2461 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2462 Patch provided by David Brownlee.
2463
2464 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2465
2466 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2467
2468 NM/30 Bugzilla 888: TLS documentation bugfixes.
2469
2470 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2471
2472 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2473 Unlike the original bugzilla I have changed all shell scripts in src tree.
2474
2475 NM/33 Bugzilla 898: Transport filter timeout fix.
2476 Patch by Todd Rinaldo.
2477
2478 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2479 Patch by Serge Demonchaux.
2480
2481 NM/35 Bugzilla 39: Base64 decode bug fixes.
2482 Patch by Jakob Hirsch.
2483
2484 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2485
2486 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2487
2488 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2489
2490 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2491
2492
2493 Exim version 4.69
2494 -----------------
2495
2496 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2497 ALT-N's libdkim that I have put here:
2498 http://duncanthrax.net/exim-experimental/
2499
2500 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2501 were called 'true' and it seems that C99 defines that as a reserved
2502 keyword to be used with 'bool' variable types. That means you could
2503 not include C99-style headers which use bools without triggering
2504 build errors in sieve.c.
2505
2506 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2507 as mailq or other aliases. Changed the --help handling significantly
2508 to do whats expected. exim_usage() emits usage/help information.
2509
2510 SC/01 Added the -bylocaldomain option to eximstats.
2511
2512 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2513
2514 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2515
2516 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2517
2518
2519 Exim version 4.68
2520 -----------------
2521
2522 PH/01 Another patch from the Sieve maintainer.
2523
2524 PH/02 When an IPv6 address is converted to a string for single-key lookup
2525 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2526 dots are used instead of colons so that keys in lsearch files need not
2527 contain colons. This was done some time before quoting was made available
2528 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2529 (notated using the quote facility) so as to distinguish them from IPv4
2530 keys. This meant that lookups for IP addresses in host lists did not work
2531 for iplsearch lookups.
2532
2533 This has been fixed by arranging for IPv6 addresses to be expressed with
2534 colons if the lookup type is iplsearch. This is not incompatible, because
2535 previously such lookups could never work.
2536
2537 The situation is now rather anomalous, since one *can* have colons in
2538 ordinary lsearch keys. However, making the change in all cases is
2539 incompatible and would probably break a number of configurations.
2540
2541 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2542 version.
2543
2544 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2545 conversion specification without a maximum field width, thereby enabling
2546 a rogue spamd server to cause a buffer overflow. While nobody in their
2547 right mind would setup Exim to query an untrusted spamd server, an
2548 attacker that gains access to a server running spamd could potentially
2549 exploit this vulnerability to run arbitrary code as the Exim user.
2550
2551 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2552 $primary_hostname instead of what libspf2 thinks the hosts name is.
2553
2554 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2555 a directory entry by the name of the lookup key. Previously, if a
2556 symlink pointed to a non-existing file or a file in a directory that
2557 Exim lacked permissions to read, a lookup for a key matching that
2558 symlink would fail. Now it is enough that a matching directory entry
2559 exists, symlink or not. (Bugzilla 503.)
2560
2561 PH/03 The body_linecount and body_zerocount variables are now exported in the
2562 local_scan API.
2563
2564 PH/04 Added the $dnslist_matched variable.
2565
2566 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2567 This means they are set thereafter only if the connection becomes
2568 encrypted.
2569
2570 PH/06 Added the client_condition to authenticators so that some can be skipped
2571 by clients under certain conditions.
2572
2573 PH/07 The error message for a badly-placed control=no_multiline_responses left
2574 "_responses" off the end of the name.
2575
2576 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2577
2578 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2579 (without spaces) instead of just copying the configuration text.
2580
2581 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2582
2583 PH/11 Added $max_received_linelength.
2584
2585 PH/12 Added +ignore_defer and +include_defer to host lists.
2586
2587 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2588 way in which PCRE > 7.0 is built.
2589
2590 PH/14 Implemented queue_only_load_latch.
2591
2592 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2593 MAIL command. The effect was to mangle the value on 64-bit systems.
2594
2595 PH/16 Another patch from the Sieve maintainer.
2596
2597 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2598
2599 PH/18 If a system quota error occurred while trying to create the file for
2600 a maildir delivery, the message "Mailbox is full" was not appended to the
2601 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2602 only to a quota excession during the actual writing of the file.
2603
2604 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2605 characters?) which causes problems in log lines. The DN values are now
2606 passed through string_printing() before being added to log lines.
2607
2608 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2609 and InterBase are left for another time.)
2610
2611 PH/21 Added message_body_newlines option.
2612
2613 PH/22 Guard against possible overflow in moan_check_errorcopy().
2614
2615 PH/23 POSIX allows open() to be a macro; guard against that.
2616
2617 PH/24 If the recipient of an error message contained an @ in the local part
2618 (suitably quoted, of course), incorrect values were put in $domain and
2619 $local_part during the evaluation of errors_copy.
2620
2621
2622 Exim version 4.67
2623 -----------------
2624
2625 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2626 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2627 Jan Srzednicki.
2628
2629 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2630 issue a MAIL command.
2631
2632 PH/02 In an ACL statement such as
2633
2634 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2635
2636 if a client was not listed at all, or was listed with a value other than
2637 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2638 the condition was not true (as it should be), so access was not denied.
2639 The bug was that the ! inversion was incorrectly passed on to the second
2640 item. This has been fixed.
2641
2642 PH/03 Added additional dnslists conditions == and =& which are different from
2643 = and & when the dns lookup returns more than one IP address.
2644
2645 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2646 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2647
2648 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2649 FSYNC, which compiles an option called disable_fsync that allows for
2650 bypassing fsync(). The documentation is heavily laced with warnings.
2651
2652 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2653
2654 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2655 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2656 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2657 including adding "make clean"; (3) Added -fPIC when compiling the test
2658 dynamically loaded module, to get rid of a warning.
2659
2660 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2661 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2662 = 0s. The bug is otherwise harmless.
2663
2664 PH/07 There was a bug in the dovecot authenticator such that the value of
2665 $auth1 could be overwritten, and so not correctly preserved, after a
2666 successful authentication. This usually meant that the value preserved by
2667 the server_setid option was incorrect.
2668
2669 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2670
2671 PH/09 Installed PCRE release 7.0.
2672
2673 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2674 run for batched SMTP input. It is now run at the start of every message
2675 in the batch. While fixing this I discovered that the process information
2676 (output by running exiwhat) was not always getting set for -bs and -bS
2677 input. This is fixed, and it now also says "batched" for BSMTP.
2678
2679 PH/11 Added control=no_pipelining.
2680
2681 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2682 patch, slightly modified), and move the expansion of helo_data till after
2683 the connection is made in the smtp transport (so it can use these
2684 values).
2685
2686 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2687
2688 PH/14 Added log_selector = +pid.
2689
2690 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2691
2692 PH/16 Add ${if forany and ${if forall.
2693
2694 PH/17 Added dsn_from option to vary the From: line in DSNs.
2695
2696 PH/18 Flush SMTP output before performing a callout, unless control =
2697 no_callout_flush is set.
2698
2699 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2700 was true (the default) a successful delivery failed to delete the retry
2701 item, thus causing premature timeout of the address. The bug is now
2702 fixed.
2703
2704 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2705
2706 PH/21 Long custom messages for fakedefer and fakereject are now split up
2707 into multiline responses in the same way that messages for "deny" and
2708 other ACL rejections are.
2709
2710 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2711 with slight modification.
2712
2713 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2714 draft, changing the syntax and factoring some duplicate code".
2715
2716 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2717 for deliveries of the second and subsequent messages over the same SMTP
2718 connection.
2719
2720 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2721 ${reduce, with only minor "tidies".
2722
2723 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2724
2725 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2726 expansion side effects.
2727
2728 PH/27 When a message times out after an over-quota error from an Exim-imposed
2729 quota, the bounce message says "mailbox is full". This message was not
2730 being given when it was a system quota that was exceeded. It now should
2731 be the same.
2732
2733 MH/03 Made $recipients available in local_scan(). local_scan() already has
2734 better access to the recipient list through recipients_list[], but
2735 $recipients can be useful in postmaster-provided expansion strings.
2736
2737 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2738 in the case of a MAIL command with additional options following the
2739 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2740 were accidentally chopped off.
2741
2742 PH/29 SMTP synchronization checks are implemented when a command is read -
2743 there is a check that no more input is waiting when there shouldn't be
2744 any. However, for some commands, a delay in an ACL can mean that it is
2745 some time before the response is written. In this time, more input might
2746 arrive, invalidly. So now there are extra checks after an ACL has run for
2747 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2748 pipelining has not been advertised.
2749
2750 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2751
2752 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2753 returned in the SMTP response when smtp_return_error_details was false.
2754 This has been fixed.
2755
2756 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2757 instead of the C I/O that was originally supplied, because problems were
2758 reported on Solaris.
2759
2760 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2761 Exim which did not show up earlier: it was assuming that a call to
2762 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2763 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2764 was a macro that became an assignment, so it seemed to work. This has
2765 changed to a proper function call with a void return, hence the compile
2766 error. Exim's code has been fixed.
2767
2768 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2769 cpus.
2770
2771 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2772
2773 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2774
2775 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2776 because it turns out to be too big or there is a timeout) there is no
2777 "Completed" line in the log. When some messages of this type were
2778 selected by exigrep, they were listed as "not completed". Others were
2779 picked up by some special patterns. I have improved the selection
2780 criteria to be more general.
2781
2782 PH/38 The host_find_failed option in the manualroute router can now be set
2783 to "ignore", to completely ignore a host whose IP address cannot be
2784 found. If all hosts are ignored, the behaviour is controlled by the new
2785 host_all_ignored option.
2786
2787 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2788 homing or because of multiple MX records with /mx) generated more than
2789 one IP address, and the following item turned out to be the local host,
2790 all the secondary addresses of the first item were incorrectly removed
2791 from the list, along with the local host and any following hosts (which
2792 is what is supposed to happen).
2793
2794 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2795 whoever called Exim into the -H file. In the case of the daemon it was
2796 behaving confusingly. When first started, it used values for whoever
2797 started the daemon, but after a SIGHUP it used the Exim user (because it
2798 calls itself on a restart). I have changed the code so that it now always
2799 uses the Exim user.
2800
2801 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2802 message are rejected with the same error (e.g. no authentication or bad
2803 sender address), and a DATA command is nevertheless sent (as can happen
2804 with PIPELINING or a stupid MUA), the error message that was given to the
2805 RCPT commands is included in the rejection of the DATA command. This is
2806 intended to be helpful for MUAs that show only the final error to their
2807 users.
2808
2809 PH/42 Another patch from the Sieve maintainer.
2810
2811 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2812 Eximstats - Fixed some broken HTML links and added missing column headers
2813 (Jez Hancock).
2814 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2815 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2816
2817 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2818
2819 PH/43 Yet another patch from the Sieve maintainer.
2820
2821 PH/44 I found a way to check for a TCP/IP connection going away before sending
2822 the response to the final '.' that terminates a message, but only in the
2823 case where the client has not sent further data following the '.'
2824 (unfortunately, this is allowed). However, in many cases there won't be
2825 any further data because there won't be any more messages to send. A call
2826 to select() can be used: if it shows that the input is "ready", there is
2827 either input waiting, or the socket has been closed. An attempt to read
2828 the next input character can distinguish the two cases. Previously, Exim
2829 would have sent an OK response which the client would never have see.
2830 This could lead to message repetition. This fix should cure that, at
2831 least in a lot of common cases.
2832
2833 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2834 advertised in response to EHLO.
2835
2836
2837 Exim version 4.66
2838 -----------------
2839
2840 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2841 fixed by 4.65/MH/01 (is this a record?) are fixed:
2842
2843 (i) An empty string was always treated as zero by the numeric comparison
2844 operators. This behaviour has been restored.
2845
2846 (ii) It is documented that the numeric comparison operators always treat
2847 their arguments as decimal numbers. This was broken in that numbers
2848 starting with 0 were being interpreted as octal.
2849
2850 While fixing these problems I realized that there was another issue that
2851 hadn't been noticed. Values of message_size_limit (both the global option
2852 and the transport option) were treated as octal if they started with 0.
2853 The documentation was vague. These values are now always treated as
2854 decimal, and I will make that clear in the documentation.
2855
2856
2857 Exim version 4.65
2858 -----------------
2859
2860 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2861 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2862 versions. (#438)
2863
2864 MH/01 Don't check that the operands of numeric comparison operators are
2865 integers when their expansion is in "skipping" mode (fixes bug
2866 introduced by 4.64-PH/07).
2867
2868 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2869 child addresses, Exim now panics and dies. Previously, because the count
2870 is held in a short int, deliveries were likely to be lost. As such a
2871 large number of recipients for a single message is ridiculous
2872 (performance will be very, very poor), I have chosen to impose a limit
2873 rather than extend the field.
2874
2875
2876 Exim version 4.64
2877 -----------------
2878
2879 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2880 leftover -K file (the existence of which was triggered by #402).
2881 While we were at it, introduced process PID as part of the -K
2882 filename. This should rule out race conditions when creating
2883 these files.
2884
2885 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2886 processing considerably. Previous code took too long for large mails,
2887 triggering a timeout which in turn triggers #401.
2888
2889 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2890 in the DK code in transports.c. sendfile() is not really portable,
2891 hence the _LINUX specificness.
2892
2893 TF/01 In the add_headers option to the mail command in an Exim filter,
2894 there was a bug that Exim would claim a syntax error in any
2895 header after the first one which had an odd number of characters
2896 in the field name.
2897
2898 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2899 callout verification, Exim cached a "reject" for the entire domain. This
2900 is correct for most verifications, but it is not correct for a recipient
2901 verification with use_sender or use_postmaster set, because in that case
2902 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2903 case of MAIL FROM:<> rejection from other early rejections (e.g.
2904 rejection of HELO). When verifying a recipient using a non-null MAIL
2905 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2906 Whatever the result of the callout, the value of the domain cache is
2907 left unchanged (for any other kind of callout, getting as far as trying
2908 RCPT means that the domain itself is ok).
2909
2910 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2911 gcc 4.1.1 threw up.
2912
2913 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2914 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2915 session, the daemon ignores ECONNECT errors and logs others; it now
2916 ignores EPIPE as well.
2917
2918 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2919 (quoted-printable decoding).
2920
2921 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2922 later the small subsequent patch to fix an introduced bug.
2923
2924 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2925
2926 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2927
2928 PH/08 An error is now given if message_size_limit is specified negative.
2929
2930 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2931 to be given (somewhat) arbitrary names.
2932
2933 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2934 in 4.64-PH/09.
2935
2936 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2937 miscellaneous code fixes
2938
2939 PH/10 Added the log_reject_target ACL modifier to specify where to log
2940 rejections.
2941
2942 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2943 hostname. This is wrong, because it relates to the incoming message (and
2944 probably the interface on which it is arriving) and not to the outgoing
2945 callout (which could be using a different interface). This has been
2946 changed to use the value of the helo_data option from the smtp transport
2947 instead - this is what is used when a message is actually being sent. If
2948 there is no remote transport (possible with a router that sets up host
2949 addresses), $smtp_active_hostname is used.
2950
2951 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2952 tweaks were necessary in order to get it to work (see also 21 below):
2953 (a) The code assumed that strncpy() returns a negative number on buffer
2954 overflow, which isn't the case. Replaced with Exim's string_format()
2955 function.
2956 (b) There were several signed/unsigned issues. I just did the minimum
2957 hacking in of casts. There is scope for a larger refactoring.
2958 (c) The code used strcasecmp() which is not a standard C function.
2959 Replaced with Exim's strcmpic() function.
2960 (d) The code set only $1; it now sets $auth1 as well.
2961 (e) A simple test gave the error "authentication client didn't specify
2962 service in request". It would seem that Dovecot has changed its
2963 interface. Fortunately there's a specification; I followed it and
2964 changed what the client sends and it appears to be working now.
2965
2966 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2967 decoding.
2968
2969 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2970 address A is aliased to B and C, where B exists and C does not. Without
2971 -v the output is "A verified" because verification stops after a
2972 successful redirection if more than one address is generated. However,
2973 with -v the child addresses are also verified. Exim was outputting "A
2974 failed to verify" and then showing the successful verification for C,
2975 with its parentage. It now outputs "B failed to verify", showing B's
2976 parentage before showing the successful verification of C.
2977
2978 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2979 look up a TXT record in a specific list after matching in a combined
2980 list.
2981
2982 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2983 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2984 they consult the DNS. I had assumed they would set it the way they
2985 wanted; and indeed my experiments on Linux seem to show that in some
2986 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2987 To be on the safe side, however, I have now made the interface to
2988 host_find_byname() similar to host_find_bydns(), with an argument
2989 containing the DNS resolver options. The host_find_byname() function now
2990 sets these options at its start, just as host_find_bydns() does. The smtp
2991 transport options dns_qualify_single and dns_search_parents are passed to
2992 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2993 of host_find_byname() use the default settings of RES_DEFNAMES
2994 (qualify_single) but not RES_DNSRCH (search_parents).
2995
2996 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2997 spool_read_header() do less string testing, by means of a preliminary
2998 switch on the second character of optional "-foo" lines. (This is
2999 overdue, caused by the large number of possibilities that now exist.
3000 Originally there were few.) While I was there, I also converted the
3001 str(n)cmp tests so they don't re-test the leading "-" and the first
3002 character, in the hope this might squeeze out yet more improvement.
3003
3004 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
3005 flag allowing group syntax was set by the header_syntax check but not
3006 turned off, possible causing trouble later; (2) The flag was not being
3007 set at all for the header_verify test, causing "group"-style headers to
3008 be rejected. I have now set it in this case, and also caused header_
3009 verify to ignore an empty address taken from a group. While doing this, I
3010 came across some other cases where the code for allowing group syntax
3011 while scanning a header line wasn't quite right (mostly, not resetting
3012 the flag correctly in the right place). These bugs could have caused
3013 trouble for malformed header lines. I hope it is now all correct.
3014
3015 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3016 with the "reply" argument non-NULL. The code, however (which originally
3017 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3018 but it didn't always do it. This confused somebody who was copying the
3019 code for some other use. I have removed all the tests.
3020
3021 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3022 feature that was used to support insecure browsers during the U.S. crypto
3023 embargo. It requires special client support, and Exim is probably the
3024 only MTA that supported it -- and would never use it because real RSA is
3025 always available. This code has been removed, because it had the bad
3026 effect of slowing Exim down by computing (never used) parameters for the
3027 RSA_EXPORT functionality.
3028
3029 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3030 authenticator to fail if there's a tab character in the incoming data
3031 (there should never be unless someone is messing about, as it's supposed
3032 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3033 if the connection is using TLS or if the remote IP is the same as the
3034 local IP, and the "valid-client-cert option" if a client certificate has
3035 been verified.
3036
3037 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
3038 authenticators. This can be used for authorization after authentication
3039 succeeds. (In the case of plaintext, it servers for both authentication
3040 and authorization.)
3041
3042 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3043 if any retry times were supplied.
3044
3045 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3046 connection, where there is no client IP address to check. In this
3047 situation, the verify now always succeeds.
3048
3049 PH/25 Applied John Jetmore's -Mset patch.
3050
3051 PH/26 Added -bem to be like -Mset, but loading a message from a file.
3052
3053 PH/27 In a string expansion for a processed (not raw) header when multiple
3054 headers of the same name were present, leading whitespace was being
3055 removed from all of them, but trailing whitespace was being removed only
3056 from the last one. Now trailing whitespace is removed from each header
3057 before concatenation. Completely empty headers in a concatenation (as
3058 before) are ignored.
3059
3060 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3061 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3062
3063 PH/29 [Removed. This was a change that I later backed out, and forgot to
3064 correct the ChangeLog entry (that I had efficiently created) before
3065 committing the later change.]
3066
3067 PH/30 Exim was sometimes attempting to deliver messages that had suffered
3068 address errors (4xx response to RCPT) over the same connection as other
3069 messages routed to the same hosts. Such deliveries are always "forced",
3070 so retry times are not inspected. This resulted in far too many retries
3071 for the affected addresses. The effect occurred only when there were more
3072 hosts than the hosts_max_try setting in the smtp transport when it had
3073 the 4xx errors. Those hosts that it had tried were not added to the list
3074 of hosts for which the message was waiting, so if all were tried, there
3075 was no problem. Two fixes have been applied:
3076
3077 (i) If there are any address or message errors in an SMTP delivery, none
3078 of the hosts (tried or untried) are now added to the list of hosts
3079 for which the message is waiting, so the message should not be a
3080 candidate for sending over the same connection that was used for a
3081 successful delivery of some other message. This seems entirely
3082 reasonable: after all the message is NOT "waiting for some host".
3083 This is so "obvious" that I'm not sure why it wasn't done
3084 previously. Hope I haven't missed anything, but it can't do any
3085 harm, as the worst effect is to miss an optimization.
3086
3087 (ii) If, despite (i), such a delivery is accidentally attempted, the
3088 routing retry time is respected, so at least it doesn't keep
3089 hammering the server.
3090
3091 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3092 in ${readsocket because some servers need this prod.
3093
3094 PH/32 Added some extra debug output when updating a wait-xxx database.
3095
3096 PH/33 The hint "could be header name not terminated by colon", which has been
3097 given for certain expansion errors for a long time, was not being given
3098 for the ${if def:h_colon_omitted{... case.
3099
3100 PH/34 The spec says: "With one important exception, whenever a domain list is
3101 being scanned, $domain contains the subject domain." There was at least
3102 one case where this was not true.
3103
3104 PH/35 The error "getsockname() failed: connection reset by peer" was being
3105 written to the panic log as well as the main log, but it isn't really
3106 panic-worthy as it just means the connection died rather early on. I have
3107 removed the panic log writing for the ECONNRESET error when getsockname()
3108 fails.
3109
3110 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3111 runs only) independently of the message's sender address. This meant
3112 that, if the 4xx error was in fact related to the sender, a different
3113 message to the same recipient with a different sender could confuse
3114 things. In particular, this can happen when sending to a greylisting
3115 server, but other circumstances could also provoke similar problems.
3116 I have changed the default so that the retry time for these errors is now
3117 based a combination of the sender and recipient addresses. This change
3118 can be overridden by setting address_retry_include_sender=false in the
3119 smtp transport.
3120
3121 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3122 remote server are returned as part of bounce messages. This was not
3123 happening for LMTP over a pipe (the lmtp transport), but now it is the
3124 same for both kinds of LMTP.
3125
3126 PH/38 Despite being documented as not happening, Exim was rewriting addresses
3127 in header lines that were in fact CNAMEs. This is no longer the case.
3128
3129 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3130 and queue runs started by the daemon processed all messages. This has
3131 been fixed so that -R and -S can now usefully be given with -q<time>.
3132
3133 PH/40 Import PCRE release 6.7 (fixes some bugs).
3134
3135 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3136
3137 PH/42 Give an error if -q is specified more than once.
3138
3139 PH/43 Renamed the variables $interface_address and $interface_port as
3140 $received_ip_address and $received_port, to make it clear that these
3141 values apply to message reception, and not to the outgoing interface when
3142 a message is delivered. (The old names remain recognized, of course.)
3143
3144 PH/44 There was no timeout on the connect() call when using a Unix domain
3145 socket in the ${readsocket expansion. There now is.
3146
3147 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3148 be meaningful with "accept".
3149
3150 SC/01 Eximstats V1.43
3151 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3152
3153 SC/02 Eximstats V1.44
3154 Use a glob alias rather than an array ref in the generated
3155 parser. This improves both readability and performance.
3156
3157 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3158 Collect SpamAssassin and rejection statistics.
3159 Don't display local sender or destination tables unless
3160 there is data to show.
3161 Added average volumes into the top table text output.
3162
3163 SC/04 Eximstats V1.46
3164 Collect data on the number of addresses (recipients)
3165 as well as the number of messages.
3166
3167 SC/05 Eximstats V1.47
3168 Added 'Message too big' to the list of mail rejection
3169 reasons (thanks to Marco Gaiarin).
3170
3171 SC/06 Eximstats V1.48
3172 Mainlog lines which have GMT offsets and are too short to
3173 have a flag are now skipped.
3174
3175 SC/07 Eximstats V1.49 (Alain Williams)
3176 Added the -emptyok flag.
3177
3178 SC/08 Eximstats V1.50
3179 Fixes for obtaining the IP address from reject messages.
3180
3181 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3182 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
3183 whitespace changes from 4.64-PH/27
3184
3185 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3186 match 4.64-PH/13
3187
3188 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3189 are found, allow negative numbers in numeric criteria)
3190
3191 JJ/06 exipick.20061117.2, added new $message_body_missing variable
3192
3193 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3194 to match changes made in 4.64-PH/43
3195
3196 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3197
3198 PH/47 Put in an explicit test for a DNS lookup of an address record where the
3199 "domain" is actually an IP address, and force a failure. This locks out
3200 those revolvers/nameservers that support "A-for-A" lookups, in
3201 contravention of the specifications.
3202
3203 PH/48 When a host name was looked up from an IP address, and the subsequent
3204 forward lookup of the name timed out, the host name was left in
3205 $sender_host_name, contrary to the specification.
3206
3207 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3208 restricted to single-key lookups, Exim was not diagnosing an error if
3209 * or *@ was used with a query-style lookup.
3210
3211 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3212
3213 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3214 long ago, but noone interested enough thought of it. Let's just say that
3215 the "1.1" means that there are some new functions that weren't there at
3216 some point in the past.
3217
3218 PH/51 Error processing for expansion failure of helo_data from an smtp
3219 transport during callout processing was broken.
3220
3221 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3222 tested/used via the -bh/-bhc/-bs options.
3223
3224 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3225 bug, fixed in subsequent PCRE releases).
3226
3227 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3228 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3229
3230 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3231
3232
3233 Exim version 4.63
3234 -----------------
3235
3236 SC/01 Use a glob alias rather than an array ref in eximstats generated
3237 parser. This improves both readability and performance.
3238
3239 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3240 Don't display local sender or destination tables in eximstats unless
3241 there is data to show.
3242 Added average volumes into the eximstats top table text output.
3243
3244 SC/03 Collect data on the number of addresses (recipients) as well
3245 as the number of messages in eximstats.
3246
3247 TF/01 Correct an error in the documentation for the redirect router. Exim
3248 does (usually) call initgroups() when daemonizing.
3249
3250 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3251 with consistent privilege compared to when running as a daemon.
3252
3253 TF/03 Note in the spec that $authenticated_id is not set for local
3254 submissions from trusted users.
3255
3256 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3257 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3258
3259 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3260 by adding some example configuration directives to the default
3261 configuration file. A little bit of work is required to uncomment the
3262 directives and define how usernames and passwords are checked, but
3263 there is now a framework to start from.
3264
3265 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3266 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3267 without this. I don't know how relevant this is to other LDAP libraries.
3268
3269 PH/02 Add the verb name to the "unknown ACL verb" error.
3270
3271 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3272
3273 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3274
3275 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3276 directory not expanded when it should be if an expanded home directory
3277 was set for the address (which is overridden by the transport).
3278
3279 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3280 libradius.
3281
3282 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3283 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3284 because it is too late at that time, and has no effect.
3285
3286 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3287 security issue with \' (bugzilla #107). I could not use the
3288 PQescapeStringConn() function, because it needs a PGconn value as one of
3289 its arguments.
3290
3291 PH/08 When testing addresses using -bt, indicate those final addresses that
3292 are duplicates that would not cause an additional delivery. At least one
3293 person was confused, thinking that -bt output corresponded to deliveries.
3294 (Suppressing duplicates isn't a good idea as you lose the information
3295 about possibly different redirections that led to the duplicates.)
3296
3297 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3298 systems where poll() doesn't work, in particular OS X.
3299
3300 PH/10 Added more information to debugging output for retry time not reached.
3301
3302 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3303 operations in malware.c.
3304
3305 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3306 signatures.
3307
3308 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3309 syslog_duplication set false, log lines that would normally be written
3310 both the the main log and to the reject log were not written to syslog at
3311 all.
3312
3313 PH/14 In the default configuration, change the use of "message" in ACL warn
3314 statements to "add_header".
3315
3316 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3317 not followed by a command (e.g. "seen endif").
3318
3319 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3320 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3321 latter.
3322
3323 PH/17 Added extra conditions to the default value of delay_warning_condition
3324 so that it is now:
3325
3326 ${if or { \
3327 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3328 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3329 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3330 }{no}{yes}}
3331
3332 The Auto-Submitted: and various List- headers are standardised, whereas I
3333 don't think Precedence: ever was.
3334
3335 PH/18 Refactored debugging code in route_finduser() to show more information,
3336 in particular, the error code if getpwnam() issues one.
3337
3338 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3339 This is apparently needed in addition to the PH/07 change above to avoid
3340 any possible encoding problems.
3341
3342 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3343 but not after initializing Perl.
3344
3345 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3346 output them only if debugging. By default they are written stderr,
3347 apparently, which is not desirable.
3348
3349 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3350 queries.
3351
3352 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3353 --not options
3354
3355 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3356
3357 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3358 authenticated or an ident call has been made. Suppress the default
3359 values for $authenticated_id and $authenticated_sender (but permit -oMai
3360 and -oMas) when testing with -bh.
3361
3362 PH/24 Re-jigged the order of the tests in the default configuration so that the
3363 tests for valid domains and recipients precede the DNS black list and CSA
3364 tests, on the grounds that those ones are more expensive.
3365
3366 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3367 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3368 This bug exists in every version of Exim that I still have, right back to
3369 0.12.
3370
3371 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3372 However, an attempt to turn on case-sensitivity in a regex key by
3373 including (?-i) didn't work because the subject string was already
3374 lowercased, and the effects were non-intuitive. It turns out that a
3375 one-line patch can be used to allow (?-i) to work as expected.
3376
3377
3378 Exim version 4.62
3379 -----------------
3380
3381 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3382 other effects) broke the use of negated acl sub-conditions.
3383
3384 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3385 patch).
3386
3387 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3388 "Deny" causes Exim to reject the incoming connection with a 554 error.
3389 Unfortunately, if there is a major crisis, such as a disk failure,
3390 tcp-wrappers gives "deny", whereas what one would like would be some
3391 kind of temporary error. A kludge has been added to help with this.
3392 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3393 554 error is used if errno is still zero or contains ENOENT (which occurs
3394 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3395 451 error is used.
3396
3397 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3398
3399 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3400 errors. Otherwise a message that provokes a temporary error (when other
3401 messages do not) can cause a whole host to time out.
3402
3403 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3404 addresses were routed directly to files or pipes from a redirect router.
3405 File deliveries just didn't batch; pipe deliveries might have suffered
3406 odd errors.
3407
3408 PH/06 A failure to get a lock for a hints database would erroneously always say
3409 "Failed to get write lock", even when it was really a read lock.
3410
3411 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3412 of 0600. This has been changed to use the value of the lockfile_mode
3413 option (which defaults to 0600).
3414
3415 PH/08 Applied small patch from the Sieve maintainer.
3416
3417 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3418 folder from quota calculations, a direct delivery into this folder messed
3419 up the contents of the maildirsize file. This was because the regex was
3420 used only to exclude .Trash (or whatever) when the size of the mailbox
3421 was calculated. There was no check that a delivery was happening into an
3422 excluded directory. This bug has been fixed by ignoring all quota
3423 processing for deliveries into excluded directories.
3424
3425 PH/10 Added the maildirfolder_create_regex option to appendfile.
3426
3427
3428 Exim version 4.61
3429 -----------------
3430
3431 PH/01 The code for finding all the local interface addresses on a FreeBSD
3432 system running IPv6 was broken. This may well have applied to all BSD
3433 systems, as well as to others that have similar system calls. The broken
3434 code found IPv4 interfaces correctly, but gave incorrect values for the
3435 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3436 that it would not match correctly against @[] and not recognize the IPv6
3437 addresses as local.
3438
3439 PH/02 The ipliteral router was not recognizing addresses of the form user@
3440 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3441
3442 PH/03 Added disable_ipv6.
3443
3444 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3445 decoded form, because it is most often used to construct To: headers
3446 lines in autoreplies, and the decoded form may well be syntactically
3447 invalid. However, $reply_address has leading white space removed, and all
3448 newlines turned into spaces so that the autoreply transport does not
3449 grumble.
3450
3451 PH/05 If group was specified without a user on a router, and no group or user
3452 was specified on a transport, the group from the router was ignored.
3453
3454 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3455 for visible compile-time settings that can be used to change these
3456 numbers, for those that want even more. Backwards compatibility with old
3457 spool files has been maintained. However, going back to a previous Exim
3458 release will lost any variables that are in spool files.
3459
3460 PH/07 Two small changes when running in the test harness: increase delay when
3461 passing a TCP/IP connection to a new process, in case the original
3462 process has to generate a bounce, and remove special handling of
3463 127.0.0.2 (sic), which is no longer necessary.
3464
3465 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3466 be the same on different OS.
3467
3468 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3469 testing.
3470
3471 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3472 whether --show-vars was specified or not
3473
3474 JJ/02 exipick: Added support for new ACL variable spool format introduced
3475 in 4.61-PH/06
3476
3477 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3478 syntactically invalid From: or Reply-to: line, and a filter used this to
3479 generate an autoreply, and therefore failed to obtain an address for the
3480 autoreply, Exim could try to deliver to a non-existent relative file
3481 name, causing unrelated and misleading errors. What now happens is that
3482 it logs this as a hard delivery error, but does not attempt to create a
3483 bounce message.
3484
3485 PH/11 The exinext utility has a -C option for testing purposes, but although
3486 the given file was scanned by exinext itself; it wasn't being passed on
3487 when Exim was called.
3488
3489 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3490 an end-of-file indication when reading a command response.
3491
3492 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3493 compiled. In many other places in Exim, IPv6 addresses are always
3494 recognized, so I have changed this. It also means that IPv4 domain
3495 literals of the form [IPV4:n.n.n.n] are now always recognized.
3496
3497 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3498 used if the router is not running as root, for example, when verifying at
3499 ACL time, or when using -bh. The debugging output from this situation was
3500 non-existent - all you got was a failure to exec. I have made two
3501 changes:
3502
3503 (a) Failures to set uid/gid, the current directory, or a process leader
3504 in a subprocess such as that created by queryprogram now generate
3505 suitable debugging output when -d is set.
3506
3507 (b) The queryprogram router detects when it is not running as root,
3508 outputs suitable debugging information if -d is set, and then runs
3509 the subprocess without attempting to change uid/gid.
3510
3511 PH/15 Minor change to Makefile for building test_host (undocumented testing
3512 feature).
3513
3514 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3515 additional section of a DNS packet that returns MX or SRV records.
3516 Instead, it always explicitly searches for A/AAAA records. This avoids
3517 major problems that occur when a DNS server includes only records of one
3518 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3519 fixed another bug: if SRV records were looked up and the corresponding
3520 address records were *not* found in the additional section, the port
3521 values from the SRV records were lost.
3522
3523 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3524 using the correct key (the original address) when searching the retry
3525 rules in order to find which one to use for generating the retry hint.
3526
3527 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3528 adding the default one. Similarly, if it contains a Reply-To: header, the
3529 errors_reply_to option, if set, is not used.
3530
3531 PH/19 When calculating a retry time, Exim used to measure the "time since
3532 failure" by looking at the "first failed" field in the retry record. Now
3533 it does not use this if it is later than than the arrival time of the
3534 message. Instead it uses the arrival time. This makes for better
3535 behaviour in cases where some deliveries succeed, thus re-setting the
3536 "first failed" field. An example is a quota failure for a huge message
3537 when small messages continue to be delivered. Without this change, the
3538 "time since failure" will always be short, possible causing more frequent
3539 delivery attempts for the huge message than are intended.
3540 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3541
3542 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3543 $1, $2, $3) because the numerical variables can be reset during some
3544 expansion items (e.g. "match"), thereby losing the authentication data.
3545
3546 PH/21 Make -bV show the size of off_t variables so that the test suite can
3547 decide whether to run tests for quotas > 2G.
3548
3549 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3550 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3551 filecount value is greater than 2G or if a quota value is greater than 2G
3552 on a system where the size of off_t is not greater than 4, a panic error
3553 is given.
3554
3555 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3556 never match. The debug and -bh output now contains an explicit error
3557 message indicating a malformed IPv4 address or mask.
3558
3559 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3560 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3561 PH/23 above applies.
3562
3563 PH/25 Do not write to syslog when running in the test harness. The only
3564 occasion when this arises is a failure to open the main or panic logs
3565 (for which there is an explicit test).
3566
3567 PH/26 Added the /no_tell option to "control=freeze".
3568
3569 PH/27 If a host name lookup failed very early in a connection, for example, if
3570 the IP address matched host_lookup and the reverse lookup yielded a name
3571 that did not have a forward lookup, an error message of the form "no IP
3572 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3573 could be logged. Now it outputs the IP address instead of "NULL".
3574
3575 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3576 allows the sender and the authenticated sender to be set when
3577 submitting a message from within Exim. Since child_open_exim() is
3578 documented for local_scan(), the new function should be too.
3579
3580 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3581 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3582 results in an empty string is now treated as unset.
3583
3584 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3585
3586 PH/31 Added sender_verify_fail logging option.
3587
3588 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3589 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3590 tidied the source and removed it altogether.
3591
3592 PH/33 When a queue run was abandoned because the load average was too high, a
3593 log line was always written; now it is written only if the queue_run log
3594 selector is set. In addition, the log line for abandonment now contains
3595 information about the queue run such as the pid. This is always present
3596 in "start" and "stop" lines but was omitted from the "abandon" line.
3597
3598 PH/34 Omit spaces between a header name and the colon in the error message that
3599 is given when verify = headers_syntax fails (if there are lots of them,
3600 the message gets confusing).
3601
3602 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3603 names, as there are now some PTR records that contain slashes. This check
3604 is only to protect against broken name servers that fall over on strange
3605 characters, so the fact that it applies to all lookups doesn't matter.
3606
3607 PH/36 Now that the new test suite is complete, we can remove some of the
3608 special code in Exim that was needed for the old test suite. For example,
3609 sorting DNS records because real resolvers return them in an arbitrary
3610 order. The new test suite's fake resolver always returns records in the
3611 same order.
3612
3613 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3614 bounces) except when queue_only is set, to avoid logging races between
3615 the different processes.
3616
3617 PH/38 Panic-die if .include specifies a non-absolute path.
3618
3619 PH/39 A tweak to the "H" retry rule from its user.
3620
3621 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3622 a label. They prevented compilation on older perls.
3623
3624 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3625 a warning to be raised on newish perls.
3626
3627 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3628 on queue. Changes to match documented behaviour of showing count of
3629 messages matching specified criteria.
3630
3631 PH/40 Changed the default ident timeout from 30s to 5s.
3632
3633 PH/41 Added support for the use of login_cap features, on those BSD systems
3634 that have them, for controlling the resources used by pipe deliveries.
3635
3636 PH/42 The content-scanning code uses fopen() to create files in which to put
3637 message data. Previously it was not paying any attention to the mode of
3638 the files. Exim runs with umask(0) because the rest of the code creates
3639 files with open(), and sets the required mode explicitly. Thus, these
3640 files were ending up world-writeable. This was not a big issue, because,
3641 being within the spool directory, they were not world-accessible. I have
3642 created a function called modefopen, which takes an additional mode
3643 argument. It sets umask(777), creates the file, chmods it to the required
3644 mode, then resets the umask. All the relevant calls to fopen() in the
3645 content scanning code have been changed to use this function.
3646
3647 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3648 to 24 hours. This avoids potential overflow problems when processing G
3649 and H retry rules. I suspect nobody ever tinkers with this value.
3650
3651 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3652
3653 PH/45 When the plaintext authenticator is running as a client, the server's
3654 challenges are checked to ensure they are valid base64 strings. By
3655 default, the authentication attempt is cancelled if an invalid string is
3656 received. Setting client_ignore_invalid_base64 true ignores these errors.
3657 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3658 they are received. Thus, the responses can be made to depend on the
3659 challenges. If an invalid string is ignored, an empty string is placed in
3660 the variable.
3661
3662 PH/46 Messages that are created by the autoreply transport now contains a
3663 References: header, in accordance with RFCs 2822 and 3834.
3664
3665 PH/47 Added authenticated_sender_force to the smtp transport.
3666
3667 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3668
3669 PH/49 Installed latest patch from the Sieve maintainer.
3670
3671 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3672 was also set, the appendfile transport was unnecessarily scanning a
3673 directory of message files (e.g. for maildir delivery) to find the count
3674 of files (along with the size), even though it did not need this
3675 information. It now does the scan only if it needs to find either the
3676 size of the count of files.
3677
3678 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3679
3680 PH/52 Two bugs concerned with error handling when the smtp transport is
3681 used in LMTP mode:
3682
3683 (i) Exim was not creating retry information for temporary errors given
3684 for individual recipients after the DATA command when the smtp transport
3685 was used in LMTP mode. This meant that they could be retried too
3686 frequently, and not timed out correctly.
3687
3688 (ii) Exim was setting the flag that allows error details to be returned
3689 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3690 recipients that were returned after the DATA command.
3691
3692 PH/53 This is related to PH/52, but is more general: for any failing address,
3693 when detailed error information was permitted to be returned to the
3694 sender, but the error was temporary, then after the final timeout, only
3695 "retry timeout exceeded" was returned. Now it returns the full error as
3696 well as "retry timeout exceeded".
3697
3698 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3699 do this, and (what is worse) MTAs that accept it.
3700
3701 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3702 will now be deprecated.
3703
3704 PH/56 New os.c-cygwin from the Cygwin maintainer.
3705
3706 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3707 formats (previously only available in exim formats via -bpr, -bpru,
3708 and -bpra. Now also available in native and exiqgrep formats)
3709
3710 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3711 with very large, slow to parse queues
3712
3713 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3714
3715 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3716
3717 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3718 responses to authentication challenges, though it was showing the
3719 challenges; (ii) I've removed the CR characters from the debug output for
3720 SMTP output lines.
3721
3722 PH/58 Allow for the insertion of a newline as well as a space when a string
3723 is turned into more than one encoded-word during RFC 2047 encoding. The
3724 Sieve code now uses this.
3725
3726 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3727 data_4xx, lost_connection, tls_required.
3728
3729 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3730 message was being sent as an SMTP response.
3731
3732 PH/61 Add -l and -k options to exicyclog.
3733
3734 PH/62 When verifying, if an address was redirected to one new address, so that
3735 verification continued, and the new address failed or deferred after
3736 having set something in $address_data, the value of $address_data was not
3737 passed back to the ACL. This was different to the case when no
3738 redirection occurred. The value is now passed back in both cases.
3739
3740 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3741 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3742 use login_cap.h, so on its own it isn't the distinguishing feature. The
3743 new name refers directly to the setclassresources() function.
3744
3745 PH/65 Added configuration files for NetBSD3.
3746
3747 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3748
3749 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3750 is preferred over IPv4.
3751
3752 PH/68 The bounce_return_message and bounce_return_body options were not being
3753 honoured for bounces generated during the reception of non-SMTP messages.
3754 In particular, this applied to messages rejected by the ACL. This bug has
3755 been fixed. However, if bounce_return_message is true and bounce_return_
3756 body is false, the headers that are returned for a non-SMTP message
3757 include only those that have been read before the error was detected.
3758 (In the case of an ACL rejection, they have all been read.)
3759
3760 PH/69 The HTML version of the specification is now built in a directory called
3761 spec_html instead of spec.html, because the latter looks like a path with
3762 a MIME-type, and this confuses some software.
3763
3764 PH/70 Catch two compiler warnings in sieve.c.
3765
3766 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3767 function verify_get_ident() calls ip_connect() to connect a socket, but
3768 if the "connect()" function timed out, ip_connect() used to close the
3769 socket. However, verify_get_ident() also closes the socket later, and in
3770 between Exim writes to the log, which may get opened at this point. When
3771 the socket was closed in ip_connect(), the log could get the same file
3772 descriptor number as the socket. This naturally causes chaos. The fix is
3773 not to close the socket in ip_connect(); the socket should be closed by
3774 the function that creates it. There was only one place in the code where
3775 this was missing, in the iplookup router, which I don't think anybody now
3776 uses, but I've fixed it anyway.
3777
3778 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3779 well as to direct DNS lookups. Otherwise the handling of names in host
3780 lists is inconsistent and therefore confusing.
3781
3782
3783 Exim version 4.60
3784 -----------------
3785
3786 PH/01 Two changes to the default runtime configuration:
3787
3788 (1) Move the checks for relay_from_hosts and authenticated clients from
3789 after to before the (commented out) DNS black list checks.
3790
3791 (2) Add control=submission to the relay_from_hosts and authenticated
3792 clients checks, on the grounds that messages accepted by these
3793 statements are most likely to be submissions.
3794
3795 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3796
3797 (1) Generate an error if the third argument for the ${prvs expansion is
3798 not a single digit.
3799
3800 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3801 string.
3802
3803 (3) Reset the variables that are obtained from the first argument of
3804 ${prvscheck and used in the second argument before leaving the code,
3805 because their memory is reclaimed, so using them afterwards may do
3806 silly things.
3807
3808 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3809 one (it's much easier than Tom thought :-).
3810
3811 (5) Because of (4), we can now allow for the use of $prvscheck_result
3812 inside the third argument.
3813
3814 PH/03 For some reason, the default setting of PATH when running a command from
3815 a pipe transport was just "/usr/bin". I have changed it to
3816 "/bin:/usr/bin".
3817
3818 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
3819 anything to be listed in the output from -bV.
3820
3821 PH/05 When a filter generated an autoreply, the entire To: header line was
3822 quoted in the delivery log line, like this:
3823
3824 => >A.N.Other <ano@some.domain> <original@ddress> ...
3825
3826 This has been changed so that it extracts the operative address. There
3827 may be more than one such address. If so, they are comma-separated, like
3828 this:
3829
3830 => >ano@some.domain,ona@other.domain <original@ddress> ...
3831
3832 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3833 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
3834 not being looked up in the rDNS to get a host name, Exim was showing the
3835 IP address twice in Received: lines, even though the IP addresses were
3836 identical. For example:
3837
3838 Received: from [1.2.3.4] (helo=[1.2.3.4])
3839
3840 However, if the real host name was known, it was omitting the HELO data
3841 if it matched the actual IP address. This has been tidied up so that it
3842 doesn't show the same IP address twice.
3843
3844 PH/07 When both +timestamp and +memory debugging was on, the value given by
3845 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3846 called by the debug printing, thereby overwriting the timestamp buffer.
3847 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3848
3849 PH/08 When the original message was included in an autoreply transport, it
3850 always said "this is a copy of the message, including all the headers",
3851 even if body_only or headers_only was set. It now gives an appropriate
3852 message.
3853
3854 PH/09 Applied a patch from the Sieve maintainer which:
3855
3856 o fixes some comments
3857 o adds the (disabled) notify extension core
3858 o adds some debug output for the result of if/elsif tests
3859 o points to the current vacation draft in the documentation
3860 and documents the missing references header update
3861
3862 and most important:
3863
3864 o fixes a bug in processing the envelope test (when testing
3865 multiple envelope elements, the last element determined the
3866 result)
3867
3868 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3869 Electronic Mail") by including:
3870
3871 Auto-submitted: auto-generated
3872
3873 in the messages that it generates (bounce messages and others, such as
3874 warnings). In the case of bounce messages for non-SMTP messages, there was
3875 also a typo: it was using "Auto_submitted" (underscore instead of
3876 hyphen). Since every message generated by Exim is necessarily in response
3877 to another message, thes have all been changed to:
3878
3879 Auto-Submitted: auto-replied
3880
3881 in accordance with these statements in the RFC:
3882
3883 The auto-replied keyword:
3884
3885 - SHOULD be used on messages sent in direct response to another
3886 message by an automatic process,
3887
3888 - MUST NOT be used on manually-generated messages,
3889
3890 - MAY be used on Delivery Status Notifications (DSNs) and Message
3891 Disposition Notifications (MDNs),
3892
3893 - MUST NOT be used on messages generated by automatic or periodic
3894 processes, except for messages which are automatic responses to
3895 other messages.
3896
3897 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3898 to the default Received: header definition.
3899
3900 PH/12 Added log selector acl_warn_skipped (default on).
3901
3902 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3903 variables because (a) they are in the wrong storage pool and (b) even if
3904 they were copied, it wouldn't work properly because of the caching.
3905
3906 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3907 checking when decoding. Apparently there are clients that generate
3908 overlong encoded strings. Why am I not surprised?
3909
3910 PH/15 If the first argument of "${if match_address" was not empty, but did not
3911 contain an "@" character, Exim crashed. Now it writes a panic log message
3912 and treats the condition as false.
3913
3914 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3915
3916 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3917 extension "envelope-auth". The code is finished and in agreement with
3918 other implementations, but there is no documentation so far and in fact,
3919 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3920 not changing the active code.
3921
3922 Print executed "if" and "elsif" statements when debugging is used. This
3923 helps a great deal to understand what a filter does.
3924
3925 Document more things not specified clearly in RFC3028. I had all this
3926 sorted out, when out of a sudden new issues came to my mind. Oops."
3927
3928 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3929 (Bugzilla #53).
3930
3931 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3932 canonical form (as documented). However, after a host name lookup from
3933 the IP address, check_host() was doing a simple string comparison with
3934 addresses acquired from the DNS when checking that the found name did
3935 have the original IP as one of its addresses. Since any found IPv6
3936 addresses are likely to be in abbreviated form, the comparison could
3937 fail. Luckily, there already exists a function for doing the comparison
3938 by converting both addresses to binary, so now that is used instead of
3939 the text comparison.
3940
3941 PH/20 There was another similar case to PH/19, when a complete host name was
3942 given in a host list; looking up its IP address could give an abbreviated
3943 form, whereas the current host's name might or might not be abbreviated.
3944 The same fix has been applied.
3945
3946
3947 Exim version 4.54
3948 -----------------
3949
3950 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3951 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3952 It now does.
3953
3954 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3955 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3956
3957 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3958
3959 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3960 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3961 Also, for "Auto-Submitted", treat anything other than "no" as
3962 non-personal, in accordance with RFC 3834. (Previously it treated
3963 anything starting "auto-" as non-personal.)
3964
3965 TF/01 The control=submission/name=... option had a problem with syntax
3966 errors if the name included a slash character. The /name= option
3967 now slurps the rest of the string, so it can include any characters
3968 but it must come last in the list of options (after /sender_retain
3969 or /domain=).
3970
3971 PH/05 Some modifications to the interface to the fake nameserver for the new
3972 testing suite.
3973
3974
3975
3976 Exim version 4.53
3977 -----------------
3978
3979 TK/01 Added the "success_on_redirect" address verification option. See
3980 NewStuff for rationale and an example.
3981
3982 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3983
3984 PH/02 Patch to exigrep to allow it to work on syslog lines.
3985
3986 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3987 fread() to skip over the body file's header line, because in Cygwin the
3988 header line is locked and is inaccessible.
3989
3990 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3991 co-exist for some time) to make it clear that it is the Exim ID that is
3992 referenced, not the Message-ID: header line.
3993
3994 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3995 string_format() function, because snprintf() does not exist on all
3996 operating systems.
3997
3998 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3999 ${stat: expansion item.
4000
4001 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
4002 protocol synchronization error", to keep the pedants happy.
4003
4004 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
4005 well as for IRIX systems, when gcc is being used. See the host.c source
4006 file for comments.
4007
4008 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
4009
4010 PH/10 Named domain lists were not working if used in a queue_smtp_domains
4011 setting.
4012
4013 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
4014 transport and to the smtp transport in LMTP mode.
4015
4016 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
4017
4018 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
4019 run a filter in a subprocess. This could lead to confusion in subsequent
4020 lookups in the parent process. There should also be a search_tidyup() at
4021 the end of the subprocess.
4022
4023 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
4024 only if the host matched helo_try_verify_hosts, which caused the
4025 verification to occur when the EHLO/HELO command was issued. The ACL just
4026 tested the remembered result. Now, if a previous verification attempt has
4027 not happened, "verify = helo" does it there and then.
4028
4029 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
4030
4031 TK/03 Fix log output including CR from clamd.
4032
4033 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
4034 exist provoked a memory error which could cause a segfault.
4035
4036 PH/15 Installed PCRE 6.2
4037
4038 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
4039
4040 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
4041 of the problem. Specifically, suggested +O2 rather than +O1 for the
4042 HP-UX compiler.
4043
4044 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
4045
4046 PH/20 If a delivery was routed to a non-standard port by means of an SRV
4047 record, the port was not correctly logged when the outgoing_port log
4048 selector was set (it logged the transort's default port).
4049
4050 PH/21 Added support for host-specific ports to manualroute, queryprogram,
4051 fallback_hosts, and "hosts" in the smtp transport.
4052
4053 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
4054 host errors such as "Connection refused".
4055
4056 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
4057 authentication with radiusclient 0.4.9:
4058
4059 - Error returned from rc_read_config was caught wrongly
4060 - Username/password not passed on to radius server due to wrong length.
4061
4062 The presumption is that some radiusclient API changes for 4.51/PH/17
4063 were not taken care of correctly. The code is still untested by me (my
4064 Linux distribution still has 0.3.2 of radiusclient), but it was
4065 contributed by a Radius user.
4066
4067 PH/24 When doing a callout, the value of $domain wasn't set correctly when
4068 expanding the "port" option of the smtp transport.
4069
4070 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
4071 while reading a MIME header. Thanks to Tom Hughes for a patch.
4072
4073 PH/24 Include config.h inside local_scan.h so that configuration settings are
4074 available.
4075
4076 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
4077 that in an ACL for RCPT (for example), you can examine exactly what was
4078 received.
4079
4080 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
4081 commands, but it was not correctly comparing the address with the actual
4082 client host address. Thus, it would show the EHLO address in Received:
4083 header lines when this was not necessary.
4084
4085 PH/27 Added the % operator to ${eval:}.
4086
4087 PH/28 Exim tries to create and chdir to its spool directory when it starts;
4088 it should be ignoring failures (because with -C, for example, it has lost
4089 privilege). It wasn't ignoring creation failures other than "already
4090 exists".
4091
4092 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
4093 -bV or -d is used.
4094
4095 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
4096 because an input line was too long, either on its own, or by virtue of
4097 too many continuations, the temporary file was not being removed, and the
4098 return code was incorrect.
4099
4100 PH/31 Missing "BOOL" in function definition in filtertest.c.
4101
4102 PH/32 Applied Sieve patches from the maintainer.
4103
4104 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
4105
4106 PH/33 Added "verify = not_blind".
4107
4108 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
4109 Local/Makefile (with some defaults set). These are used in built scripts
4110 such as exicyclog, but they have never been used in the exim_install
4111 script (though there are many overriding facilities there). I have
4112 arranged that the exim_install script now takes note of these two
4113 settings.
4114
4115 PH/35 Installed configuration files for Dragonfly.
4116
4117 PH/36 When a locally submitted message by a trusted user did not contain a
4118 From: header, and the sender address was obtained from -f or from an SMTP
4119 MAIL command, and the trusted user did not use -F to supply a sender
4120 name, $originator_name was incorrectly used when constructing a From:
4121 header. Furthermore, $originator_name was used for submission mode
4122 messages from external hosts without From: headers in a similar way,
4123 which is clearly wrong.
4124
4125 PH/37 Added control=suppress_local_fixups.
4126
4127 PH/38 When log_selector = +received_sender was set, and the addition of the
4128 sender made the log line's construction buffer exactly full, or one byte
4129 less than full, an overflow happened when the terminating "\n" was
4130 subsequently added.
4131
4132 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
4133 when the result of a list match is failure because a DNS lookup failed.
4134
4135 PH/40 RM_COMMAND is now used in the building process.
4136
4137 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
4138 the "build-* directories that it finds.
4139
4140 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
4141 address in a domain literal was a prefix of an interface address.
4142
4143 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
4144 when verifying a sender address, unless rewrite_headers is false.
4145
4146 PH/44 Wrote a long comment about why errors_to addresses are verified as
4147 recipients, not senders.
4148
4149 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
4150 the ratelimit ACL was added.
4151
4152 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
4153
4154 PH/46 Added extra information about PostgreSQL errors to the error string.
4155
4156 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
4157 avoiding the need to install special zones in a real server. This is
4158 backwards compatible; if it can't find the fake resolver, it drops back.
4159 Thus, both old and new test suites can be run.
4160
4161 TF/02 Added util/ratelimit.pl
4162
4163 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
4164 clock is set back in time.