Harden string-list handling
[exim.git] / doc / doc-txt / ChangeLog
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495ae4b0 1Change log file for Exim from version 4.21
f988ce57 2------------------------------------------
446415f5
HSHR
3This document describes *changes* to previous versions, that might
4affect Exim's operation, with an unchanged configuration file. For new
5options, and new features, see the NewStuff file next to this ChangeLog.
495ae4b0 6
4c57a40e 7
d99f54e4
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8Exim version 4.92
9-----------------
10
9723f966
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11JH/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
14JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
64b67b65
JH
15 non-signal-safe functions being used.
16
17JH/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.
9723f966 20
ea7b1f16
JH
21JH/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
cfbb0d24
JH
25JH/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
0488984d
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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
cfbb0d24
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30 messed with.
31
85defcf0
PP
32PP/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
1bd642c2
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35JH/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
2ddb4094
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43JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
44 $sender_verify_failure/$recipient_verify_failure to "random".
45
1613fd68
JH
46JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
47 legitimate.
48
e6057245
JH
49JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
50 Previously this would segfault.
51
7b9822bf
JH
52JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
53 segfault.
54
d8d9f930
JH
55JH/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
61e3f250
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62JH/12 Add client-ip info to non-pass iprev ${authres } lines.
63
7a8b9519
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64JH/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
49e56fb3
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69JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
70
74f1a423
JH
71JH/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
5054c4fd 76JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
JH
77
78JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 79
946515bf
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80JH/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
8c34c611
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84JH/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
1bca4f5f
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88PP/02 Let -n work with printing macros too, not just options.
89
8a6b4e02
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90JH/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
0a682b6c
PP
95PP/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
c2c451ac
PP
99PP/04 Documentation: current string operators work on bytes, not codepoints.
100
8768d548
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101JH/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
5455f548
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107JH/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
25beaee4
MK
111JH/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
7ea1237c 115JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 116 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
MK
117 -Mrm. Developement by Matthias Kurz, hacked on by JH.
118
ebda598a
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119JH/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
570cb1bd
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123JH/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
eb58ddf5
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128JH/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
ffbc20ed
MK
132JH/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
4e928780
MK
137JH/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
75c121f0 140JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 141 far too small for todays use of crypto signatures stored there. Go all
75c121f0
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142 the way to the max DNS message size of 64kB, even though this might be
143 overmuch for IOT constrained device use.
144
e30f4f43
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145JH/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
a45431fa
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149JH/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
c0fb53b7
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154JH/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
6aac3239
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158JH/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
5a2a0989
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163JH/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
b72f857f
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166JH/36 Harder 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
9723f966 170
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171Exim version 4.91
172-----------------
459fca58 173
c39c8870 174GF/01 DEFER rather than ERROR on redis cluster MOVED response.
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175 When redis_servers is set to a list of > 1 element, and the Redis servers
176 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
177 case of MOVED into a DEFER case instead, thus moving the query onto the
178 next server in the list. For a cluster of N elements, all N servers must
179 be defined in redis_servers.
c39c8870 180
0800ef83
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181GF/02 Catch and remove uninitialized value warning in exiqsumm
182 Check for existence of @ARGV before looking at $ARGV[0]
183
459fca58
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184JH/01 Replace the store_release() internal interface with store_newblock(),
185 which internalises the check required to safely use the old one, plus
186 the allocate and data copy operations duplicated in both (!) of the
187 extant use locations.
188
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189JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
190 modifier. This matches the restriction on the commandline.
191
bbfb5dcd
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192JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
193 Previously only the last row was returned.
194
a05d3e34
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195JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
196 we assumed that tags in the header were well-formed, and parsed the
197 element content after inspecting only the first char of the tag.
198 Assumptions at that stage could crash the receive process on malformed
199 input.
200
ce93c6d8
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201JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
202 While running the DKIM ACL we operate on the Permanent memory pool so that
203 variables created with "set" persist to the DATA ACL. Also (at any time)
204 DNS lookups that fail create cache records using the Permanent pool. But
205 expansions release any allocations made on the current pool - so a dnsdb
206 lookup expansion done in the DKIM ACL releases the memory used for the
207 DNS negative-cache, and bad things result. Solution is to switch to the
208 Main pool for expansions.
209 While we're in that code, add checks on the DNS cache during store_reset,
210 active in the testsuite.
211 Problem spotted, and debugging aided, by Wolfgang Breyha.
212
2577f55f
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213JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
214 When none of the hosts presented to a transport match an already-open
215 connection, close it and proceed with the list. Previously we would
216 queue the message. Spotted by Lena with Yahoo, probably involving
217 round-robin DNS.
218
5b6f7658
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219JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
220 Previously a spurious "250 OK id=" response was appended to the proper
221 failure response.
222
c11d665d
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223JH/08 The "support for" informational output now, which built with Content
224 Scanning support, has a line for the malware scanner interfaces compiled
225 in. Interface can be individually included or not at build time.
e5ba8aa7
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226
227JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
228 by the template makefile "src/EDITME". The "STREAM" support for an older
229 ClamAV interface method is removed.
c11d665d 230
ba0e37b1
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231JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
232 rows affected is given instead).
233
96508de1
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234JH/11 The runtime Berkeley DB library version is now additionally output by
235 "exim -d -bV". Previously only the compile-time version was shown.
236
06fdb9f7
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237JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
238 SMTP connection. Previously, when one had more receipients than the
239 first, an abortive onward connection was made. Move to full support for
240 multiple onward connections in sequence, handling cutthrough connection
241 for all multi-message initiating connections.
242
f83a760f
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243JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
244 routers. Previously, a multi-recipient message would fail to match the
245 onward-connection opened for the first recipient, and cause its closure.
246
f1fed05b
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247JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
248 a timeout on read on a GnuTLS initiating connection, resulting in the
249 initiating connection being dropped. This mattered most when the callout
250 was marked defer_ok. Fix to keep the two timeout-detection methods
251 separate.
252
051d5efa
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253JH/15 Relax results from ACL control request to enable cutthrough, in
254 unsupported situations, from error to silently (except under debug)
255 ignoring. This covers use with PRDR, frozen messages, queue-only and
256 fake-reject.
257
cf3cd306
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258HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
259
744976d4
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260JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
261 metadata, resulting in a crash in free().
262
aab9a843 263PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 264 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 265 Broken also in d185889f4, with init system revamp.
7be14582 266
83d2a861
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267JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
268 Previously we abruptly closed the connection after reading a malware-
269 found indication; now we go on to read the "scan ok" response line,
270 and send a quit.
271
6741531c
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272JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
273 ACL. Previously, a crash would result.
274
85e03244
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275JH/19 Speed up macro lookups during configuration file read, by skipping non-
276 macro text after a replacement (previously it was only once per line) and
277 by skipping builtin macros when searching for an uppercase lead character.
278
c0635b6d
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279JH/20 DANE support moved from Experimental to mainline. The Makefile control
280 for the build is renamed.
281
b808677c
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282JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
283 was allocated for every new TLS startup, meaning one per message. Fix
284 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
285
6678c382
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286JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
287 reported the original. Fix to report (as far as possible) the ACL
288 result replacing the original.
289
dec766a1
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290JH/23 Fix memory leak during multi-message connections using STARTTLS under
291 OpenSSL. Certificate information is loaded for every new TLS startup,
292 and the resources needed to be freed.
293
15ae19f9
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294JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
295
e6532c4a
JH
296JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
297 was not propagated.
298
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299JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
300 DATA response info to the (existing) per-recipient response info for
301 the "C=" log element. It can have useful tracking info from the
302 destination system. Patch from Simon Arlott.
303
fc8cd529
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304JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
305 length value. Previously this would segfault.
306
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307HS/02 Support Avast multiline protoocol, this allows passing flags to
308 newer versions of the scanner.
309
e04bfa34
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310JH/28 Ensure that variables possibly set during message acceptance are marked
311 dead before release of memory in the daemon loop. This stops complaints
312 about them when the debug_store option is enabled. Discovered specifically
313 for sender_rate_period, but applies to a whole set of variables.
c232fc99
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314 Do the same for the queue-runner and queue-list loops, for variables set
315 from spool message files. Do the same for the SMTP per-message loop, for
316 certain variables indirectly set in ACL operations.
e04bfa34 317
ecce6d9a
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318JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
319 as a multi-recipient message from a mailinglist manager). The coding had
320 an arbitrary cutoff number of characters while checking for more input;
321 enforced by writing a NUL into the buffer. This corrupted long / fast
322 input. The problem was exposed more widely when more pipelineing of SMTP
323 responses was introduced, and one Exim system was feeding another.
324 The symptom is log complaints of SMTP syntax error (NUL chars) on the
325 receiving system, and refused recipients seen by the sending system
326 (propating to people being dropped from mailing lists).
327 Discovered and pinpointed by David Carter.
328
c9cf9ac4
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329JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
330 replaced by the ${authresults } expansion.
331
b3b37076
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332JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
333
830832c9
HSHR
334HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
335 allows proper process termination in container environments.
336
f64e8b5f
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337JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
338 Previously the "final dot" had a newline after it; ensure it is CR,LF.
339
8f0776b5
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340JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
341 and "err_perm", deprecated since 4.83 when the RFC-defined words
342 "temperror" and "permerror" were introduced.
343
857eaf37
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344JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
345 transport-filters or DKIM-signing. The restriction was lost in the
346 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 347 Extend the restriction to also cover ARC-signing.
857eaf37 348
c85476e9
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349JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
350 in defer=pass mode supply a 450 to the initiator. Previously the message
351 would be spooled.
352
405074ad
PP
353PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
354 tls_require_ciphers is used as before.
355
eb445b04
HSHR
356HS/03 Malware Avast: Better match the Avast multiline protocol. Add
357 "pass_unscanned". Only tmpfails from the scanner are written to
358 the paniclog, as they may require admin intervention (permission
359 denied, license issues). Other scanner errors (like decompression
360 bombs) do not cause a paniclog entry.
ad93c40f 361
d342446f
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362JH/36 Fix reinitialisation of DKIM logging variable between messages.
363 Previously it was possible to log spurious information in receive log
364 lines.
365
a28050f8
JH
366JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
367 triggered odd behaviour from Outlook Express clients.
368
ddd16464
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369PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
370 suffix list.
371
321ef002
JH
372JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
373 since the IETF WG has not yet settled on that versus the original
374 "bare" representation.
375
3203e7ba
JH
376JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
377 Previously the millisecond value corrupted the output.
378 Fix also for syslog_pid=no and log_selector +pid, for which the pid
379 corrupted the output.
380
bbfb5dcd 381
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382Exim version 4.90
383-----------------
384
385JH/01 Rework error string handling in TLS interface so that the caller in
386 more cases is responsible for logging. This permits library-sourced
387 string to be attached to addresses during delivery, and collapses
388 pairs of long lines into single ones.
389
856d1e16
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390PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
391 during configuration. Wildcards are allowed and expanded.
392
b9df1829
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393JH/02 Rework error string handling in DKIM to pass more info back to callers.
394 This permits better logging.
395
875512a3
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396JH/03 Rework the transport continued-connection mechanism: when TLS is active,
397 do not close it down and have the child transport start it up again on
398 the passed-on TCP connection. Instead, proxy the child (and any
399 subsequent ones) for TLS via a unix-domain socket channel. Logging is
400 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 401 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 402
fc3f96af
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403JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
404 identical IP addresses on different listening ports. Will also affect
405 "exiwhat" output.
406
98913c8e
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407PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
408 add noisy ifdef guards to special-case this sillyness.
409 Patch from Bernd Kuhls.
410
8d909960
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411JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
412 than 255 are no longer allowed.
413
7006ee24
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414JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
415 Disable the session-cache too, which might reduce our load. Since we
416 currrectly use a new context for every connection, both as server and
417 client, there is no benefit for these.
418 GnuTLS appears to not support tickets server-side by default (we don't
419 call gnutls_session_ticket_enable_server()) but client side is enabled
420 by default on recent versions (3.1.3 +) unless the PFS priority string
421 is used (3.2.4 +).
422
6e411084
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423PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
424 <https://reproducible-builds.org/specs/source-date-epoch/>.
425
4c2471ca
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426JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
427 the check for any unsuccessful recipients did not notice the limit, and
428 erroneously found still-pending ones.
429
4e910c01
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430JH/08 Pipeline CHUNKING command and data together, on kernels that support
431 MSG_MORE. Only in-clear (not on TLS connections).
432
42055a33
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433JH/09 Avoid using a temporary file during transport using dkim. Unless a
434 transport-filter is involved we can buffer the headers in memory for
435 creating the signature, and read the spool data file once for the
436 signature and again for transmission.
437
eeb35890
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438JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
439 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 440 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 441
b7d3afcf
JH
442JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
443 case where the routing stage had gathered several addresses to send to
444 a host before calling the transport for the first, we previously failed
445 to close down TLS in the old transport process before passing the TCP
446 connection to the new process. The new one sent a STARTTLS command
447 which naturally failed, giving a failed delivery and bloating the retry
448 database. Investigation and fix prototype from Wolfgang Breyha.
449
40525d07
JH
450JH/12 Fix check on SMTP command input synchronisation. Previously there were
451 false-negatives in the check that the sender had not preempted a response
452 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 453 awareness of the SMTP input buffering.
40525d07 454
f33875c3
PP
455PP/04 Add commandline_checks_require_admin option.
456 Exim drops privileges sanely, various checks such as -be aren't a
457 security problem, as long as you trust local users with access to their
458 own account. When invoked by services which pass untrusted data to
459 Exim, this might be an issue. Set this option in main configuration
460 AND make fixes to the calling application, such as using `--` to stop
461 processing options.
462
a5ffa9b4
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463JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
464 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
465 responses to those, into a single TLS record each way (this usually means
466 a single packet). As a side issue, smtp_enforce_sync now works on TLS
467 connections.
925ac8e4 468
6600985a
PP
469PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
470 affects you only if you're dancing at the edge of the param size limits.
471 If you are, and this message makes sense to you, then: raise the
472 configured limit or use OpenSSL 1.1. Nothing we can do for older
473 versions.
474
ac4d558b
JH
475JH/14 For the "sock" variant of the malware scanner interface, accept an empty
476 cmdline element to get the documented default one. Previously it was
477 inaccessible.
478
e69636bc
JH
479JH/15 Fix a crash in the smtp transport caused when two hosts in succession
480 are unsuable for non-message-specific reasons - eg. connection timeout,
481 banner-time rejection.
482
a843a57e
JH
483JH/16 Fix logging of delivery remote port, when specified by router, under
484 callout/hold.
485
8e041ae0
PP
486PP/06 Repair manualroute's ability to take options in any order, even if one
487 is the name of a transport.
833c70bc
PP
488 Fixes bug 2140.
489
35a04365
HSHR
490HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
491
4226691b
JH
492JH/17 Change the list-building routines interface to use the expanding-string
493 triplet model, for better allocation and copying behaviour.
494
d185889f
JH
495JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
496 Previously it was constructed the first time a possibly-matching string
497 was met in the configuration file input during startup; now it is done
498 during compilation.
499
0a6c178c
JH
500JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
501 compatible one, to avoid the (poorly documented) possibility of a config
502 file in the working directory redirecting the DB files, possibly correpting
02745400 503 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 504
fae8970d
JH
505JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
506 cache-hot. Previously, although the result was properly cached, the
507 initial verify call returned a defer.
508
ad1a76fe 509JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
510 the main verify for receipient in uncached-mode.
511
ad1a76fe
JH
512JH/22 Retire historical build files to an "unsupported" subdir. These are
513 defined as "ones for which we have no current evidence of testing".
514
135e9496
JH
515JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
516 if present. Previously it was ignored.
517
f2ed27cf
JH
518JH/24 Start using specified-initialisers in C structure init coding. This is
519 a C99 feature (it's 2017, so now considered safe).
520
7eb0e5d2
JH
521JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
522 if was a fixed-sized field and bitmask ops via macros; it is now more
523 extensible.
524
4f9f4be4
525PP/07 GitHub PR 56: Apply MariaDB build fix.
526 Patch provided by Jaroslav Škarvada.
527
dc4de9cc
PP
528PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
529 during Coverity cleanups [4.87 JH/47]
530 Diagnosis and fix provided by Michael Fischer v. Mollard.
531
ea18931d
JH
532JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
533 the right size to place the terminating semicolon on its own folded
534 line, the header hash was calculated to an incorrect value thanks to
535 the (relaxed) space the fold became.
536
0768462d 537HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
538 and confused the parent.
539
848214f7
JH
540JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
541 which could crash as a result. This could lead to undeliverable messages.
542
9e0ed81f
JH
543JH/28 Logging: "next input sent too soon" now shows where input was truncated
544 for log purposes.
545
2540f2f8
JH
546JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
547 matters on fast-turnover and PID-randomising systems, which were getting
548 out-of-order delivery.
549
e5ab0ba9
JH
550JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
551 a possibly-overlapping copy. The symptom was that "Remote host closed
552 connection in response to HELO" was logged instead of the actual 4xx
553 error for the HELO.
554
e99a3a6c
JH
555JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
556 Previously only that bufferd was discarded, resulting in SYMTP command
557 desynchronisation.
558
18067c75
JH
559JH/32 DKIM: when a message has multiple signatures matching an identity given
560 in dkim_verify_signers, run the dkim acl once for each. Previously only
561 one run was done. Bug 2189.
562
72934ba7
JH
563JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
564 "panic the current process" to "deliberately defer". The panic log is
565 still written with the problem list name; the mail and reject logs now
566 get a temp-reject line for the message that was being handled, saying
567 something like "domains check lookup or other defer". The SMTP 451
568 message is still "Temporary local problem".
569
625667b6
JH
570JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
571 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
572 freed. CVE-2017-16943.
573
574HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
575 from SMTP input. Previously it was always done; now only done for DATA
576 and not BDAT commands. CVE-2017-16944.
625667b6 577
d21bf202
JH
578JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
579 to the message (such as an overlong header line). Previously this was
580 not done and we did not exit BDAT mode. Followon from the previous item
581 though a different problem.
582
acfc18c3 583
fd047340 584Exim version 4.89
acfc18c3 585-----------------
4c57a40e 586
9427e879 587JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 588 than -2003 did; needs libidn2 in addition to libidn.
fd047340 589
7b283890
JH
590JH/02 The path option on a pipe transport is now expanded before use.
591
4c57a40e
PP
592PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
593 Patch provided by "Björn", documentation fix added too.
594
5d036699
JH
595JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
596 missing a wire-to-host endian conversion.
597
f4630439
JH
598JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
599 close after a BDAT command line could be taken as a following command,
600 giving a synch failure. Fix by only checking for synch immediately
601 before acknowledging the chunk.
602
f988ce57
JS
603PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
604 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
605 macro. Patches provided by Josh Soref.
606
bd8fbe36
JH
607JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
608 Previously we did not; the RFC seems ambiguous and VRFY is not listed
609 by IANA as a service extension. However, John Klensin suggests that we
610 should.
611
612JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
613 the dkim code may be unix-mode line endings rather than smtp wire-format
614 CRLF, so prepend a CR to any bare LF.
fd047340 615
bd8fbe36 616JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
617 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
618
bd8fbe36
JH
619JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
620 the first were themselves being wrongly included in the feed into dkim
621 processing; with most chunk sizes in use this resulted in an incorrect
622 body hash calculated value.
623
eea19017
JH
624JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
625 DKIM signature block, for verification. Although advised against by
626 standards it is specifically not ruled illegal.
627
44e6651b
JH
628JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
629
630JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
631 missing a body hash (the bh= tag).
632
633JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
634 It seems that HAProxy sends the Proxy Protocol information in clear and
635 only then does a TLS startup, so do the same.
636
637JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
638 TCP connections (such as for Spamd) unless the daemon successfully set
639 Fast Open mode on its listening sockets. This fixes breakage seen on
640 too-old kernels or those not configured for Fast Open, at the cost of
641 requiring both directions being enabled for TFO, and TFO never being used
642 by non-daemon-related Exim processes.
643
644JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
645 endings, at least on the first header line. Try to canonify any that get
646 past that check, despite the cost.
647
b6040544
JH
648JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
649 now limited to an arbitrary five deep, while parsing addresses with the
650 strip_excess_angle_brackets option enabled.
651
f700ea4d
PP
652PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
653 instead leave the unprompted TLS handshake in socket buffer for the
654 TLS library to consume.
655
da88acae
PP
656PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
657
f6ef9370
PP
658PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
659
90341c71
JH
660JH/16 Drop variables when they go out of scope. Memory management drops a whole
661 region in one operation, for speed, and this leaves assigned pointers
662 dangling. Add checks run only under the testsuite which checks all
663 variables at a store-reset and panics on a dangling pointer; add code
664 explicitly nulling out all the variables discovered. Fixes one known
665 bug: a transport crash, where a dangling pointer for $sending_ip_address
666 originally assigned in a verify callout, is re-used.
667
1ec2ab36
PP
668PP/06 Drop '.' from @INC in various Perl scripts.
669
670PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
671
672PP/08 Reduce a number of compilation warnings under clang; building with
673 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
674 should be warning-free.
675
8b2b9480
PP
676JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
677
678HS/01 Fix portability problems introduced by PP/08 for platforms where
679 realloc(NULL) is not equivalent to malloc() [SunOS et al].
680
d953610f
HSHR
681HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
682 chunk. This allows us to accept broken chunked messages. We need a more
683 general solution here.
684
7dc5f827
PP
685PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
686 already-broken messages in the queue.
687
4bb432cb
PP
688JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
689
3b1a84c8
PP
690JH/19 Fix reference counting bug in routing-generated-address tracking.
691
902fbd69 692
8d042305
JH
693Exim version 4.88
694-----------------
4c57a40e 695
9094b84b
JH
696JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
697 supports it and a size is available (ie. the sending peer gave us one).
8d042305 698
03d5892b
JH
699JH/02 The obsolete acl condition "demime" is removed (finally, after ten
700 years of being deprecated). The replacements are the ACLs
701 acl_smtp_mime and acl_not_smtp_mime.
702
4b0fe319
JH
703JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
704 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
705 or even an in-clear connection were permitted. Now, if the host lookup
706 was dnssec and dane was requested then the host is only used if the
707 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
708 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
709 if one fails this test.
710 This means that a poorly-configured remote DNS will make it incommunicado;
711 but it protects against a DNS-interception attack on it.
712
789f8a4f
JH
713JH/04 Bug 1810: make continued-use of an open smtp transport connection
714 non-noisy when a race steals the message being considered.
715
23bb6982 716JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 717 self-signed certificate for inbound TLS connections.
23bb6982 718
0bd1b1ed 719JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 720 in rewrites and routers.
0bd1b1ed 721
20b9a2dc
JH
722JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
723 and logged a warning sing 4.83; now they are a configuration file error.
724
05392bbc
JH
725JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
726 (lacking @domain). Apply the same qualification processing as RCPT.
727
1a6230a3
JH
728JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
729
cfab9d68
JH
730JH/10 Support ${sha256:} applied to a string (as well as the previous
731 certificate).
732
98c82a3d
JH
733JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
734 a cutthrough deliver is pending, as we always want to make a connection.
735 This also avoids re-routing the message when later placing the cutthrough
736 connection after a verify cache hit.
737 Do not update it with the verify result either.
738
739JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
740 when routing results in more than one destination address.
741
ae8386f0
JH
742JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
743 signing (which inhibits the cutthrough capability). Previously only
744 the presence of an option was tested; now an expansion evaluating as
745 empty is permissible (obviously it should depend only on data available
746 when the cutthrough connection is made).
747
0d9fa8c0
JH
748JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
749 the relevant preceding SMTP command did not note the pipelining mode.
750
3581f321
JH
751JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
752 Previously they were not counted.
753
ef3a1a30
JH
754JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
755 as one having no matching records. Previously we deferred the message
756 that needed the lookup.
757
4c04137d 758JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
759 distinguished as "(=".
760
1435d4b2
JH
761JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
762 for missing MX records. Previously it only worked for missing A records.
763
eea0defe
JB
764JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
765
766JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
767 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 768
4c04137d 769JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
770 even for a "none" policy. Patch from Tony Meyer.
771
1c788856
JH
772JH/22 Fix continued use of a connection for further deliveries. If a port was
773 specified by a router, it must also match for the delivery to be
774 compatible.
775
e3b1f624
JH
776JH/23 Bug 1874: fix continued use of a connection for further deliveries.
777 When one of the recipients of a message was unsuitable for the connection
778 (has no matching addresses), we lost track of needing to mark it
779 deferred. As a result mail would be lost.
780
a57ce043
JH
781JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
782
f59aaaaa 783JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
784 takes up less space and should be simpler to maintain. Merge the ACL
785 condition decode tables also, with similar effect.
d7bed771 786
d1f9fb42
JH
787JH/26 Fix problem with one_time used on a redirect router which returned the
788 parent address unchanged. A retry would see the parent address marked as
789 delivered, so not attempt the (identical) child. As a result mail would
790 be lost.
791
92b0827a
JH
792JH/27 Fix a possible security hole, wherein a process operating with the Exim
793 UID can gain a root shell. Credit to http://www.halfdog.net/ for
794 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
795 itself :(
796
ddf1b11a
JH
797JH/28 Enable {spool,log} filesystem space and inode checks as default.
798 Main config options check_{log,spool}_{inodes,space} are now
799 100 inodes, 10MB unless set otherwise in the configuration.
800
3cc3f762
JH
801JH/29 Fix the connection_reject log selector to apply to the connect ACL.
802 Previously it only applied to the main-section connection policy
803 options.
804
ae5afa61
JH
805JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
806
317e40ac
PP
807PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
808 by me. Added RFC7919 DH primes as an alternative.
809
8b0fb68e
PP
810PP/02 Unbreak build via pkg-config with new hash support when crypto headers
811 are not in the system include path.
812
ad7fc6eb 813JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 814 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
815 Exim did stdio operations after fclose. This was exposed by a recent
816 change which nulled out the file handle after the fclose.
ad7fc6eb 817
ee5b1e28
JH
818JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
819 signed directly by the cert-signing cert, rather than an intermediate
820 OCSP-signing cert. This is the model used by LetsEncrypt.
821
5ddc9771
JH
822JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
823
8d73599f
JH
824HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
825 an incoming connection.
826
446415f5
HSHR
827HS/02 Bug 1802: Do not half-close the connection after sending a request
828 to rspamd.
829
8e53a4fc
HSHR
830HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
831 fallback to "prime256v1".
8d042305 832
87cb4a16 833JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 834 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
835
836
0d9b78be
JH
837Exim version 4.87
838-----------------
4c57a40e 839
82d14d6a
JH
840JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
841 and 3.4.4 - once the server is enabled to respond to an OCSP request
842 it does even when not requested, resulting in a stapling non-aware
843 client dropping the TLS connection.
0d9b78be 844
6c6d6e48
TF
845TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
846 support variable-length bit vectors. No functional change.
847
ac881e27
TF
848TF/02 Improve the consistency of logging incoming and outgoing interfaces.
849 The I= interface field on outgoing lines is now after the H= remote
850 host field, same as incoming lines. There is a separate
851 outgoing_interface log selector which allows you to disable the
852 outgoing I= field.
853
c8899c20
JH
854JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
855 If not running log_selector +smtp_connection the mainlog would be held
856 open indefinitely after a "too many connections" event, including to a
857 deleted file after a log rotate. Leave the per net connection logging
858 leaving it open for efficiency as that will be quickly detected by the
859 check on the next write.
860
f1b81d81
HSHR
861HS/01 Bug 1671: Fix post transport crash.
862 Processing the wait-<transport> messages could crash the delivery
863 process if the message IDs didn't exist for some reason. When
864 using 'split_spool_directory=yes' the construction of the spool
865 file name failed already, exposing the same netto behaviour.
866
f38917cc
JH
867JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
868 mime_regex ACL conditions.
869
895fbaf2
JH
870JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
871 to DSN fail messages (bounces): remote IP, remote greeting, remote response
872 to HELO, local diagnostic string.
873
805bb5c3
JH
874JH/05 Downgrade message for a TLS-certificate-based authentication fail from
875 log line to debug. Even when configured with a tls authenticator many
876 client connections are expected to not authenticate in this way, so
877 an authenticate fail is not an error.
878
56c2a7be
HSHR
879HS/02 Add the Exim version string to the process info. This way exiwhat
880 gives some more detail about the running daemon.
881
4c04137d 882JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
883 matter for fast-change records such as DNSBLs.
884
6f6dedcc
JH
885JH/07 Bug 1678: Always record an interface option value, if set, as part of a
886 retry record, even if constant. There may be multiple transports with
887 different interface settings and the retry behaviour needs to be kept
888 distinct.
889
0f557e90
JH
890JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
891
892JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
893
ec0eb1a3
JH
894JH/10 Bug 840: fix log_defer_output option of pipe transport
895
41e93589
JH
896JH/11 Bug 830: use same host for all RCPTS of a message, even under
897 hosts_randomize. This matters a lot when combined with mua_wrapper.
898
98b98887 899JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
900 ${quote_pgsql:<string>} operator.
901
98b98887
JH
902JH/13 Bug 1708: avoid misaligned access in cached lookup.
903
858e91c2
JH
904JH/14 Change header file name for freeradius-client. Relevant if compiling
905 with Radius support; from the Gentoo tree and checked under Fedora.
906
907JH/15 Bug 1712: Introduce $prdr_requested flag variable
908
6ff55e50
JH
909JH/16 Bug 1714: Permit an empty string as expansion result for transport
910 option transport_filter, meaning no filtering.
911
3b957582
JB
912JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
913
23f3dc67
JH
914JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
915 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 916 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
917 If a server certificate is not supplied (via tls_certificate) an error is
918 logged, and clients will find TLS connections fail on startup. Presumably
919 they will retry in-clear.
920 Packagers of Exim are strongly encouraged to create a server certificate
921 at installation time.
922
240c288f
JH
923HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
924 with the $config_file variable.
925
5ef5dd52
JB
926JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
927 in transport context, after the attempt, and per-recipient. The latter type
928 is per host attempted. The event data is the error message, and the errno
929 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 930 and the trailing two digits of the smtp 4xx response.
5ef5dd52 931
e161710d
GF
932GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
933 to write to mainlog (or rejectlog, paniclog) in the window between file
934 creation and permissions/ownership being changed. Particularly affects
935 installations where exicyclog is run as root, rather than exim user;
936 result is that the running daemon panics and dies.
937
a159f203
JH
938JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
939
7f06582c
JH
940JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
941 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
942 "pri" and "weight". Note that the previous implicit priority given by the
943 list order is no longer honoured.
944
4c04137d 945JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
946 for DKIM processing.
947
f0989ec0
JH
948JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
949 by defining SUPPORT_SOCKS.
74f150bf 950
cee5f132
JH
951JH/26 Move PROXY support from Experimental to mainline, enabled for a build
952 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
953 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
954 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 955
8c5d388a
JH
956JH/27 Move Internationalisation support from Experimental to mainline, enabled
957 for a build by defining SUPPORT_I18N
958
2d8d625b
JH
959JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
960 of the query string, and make ${quote_redis:} do that quoting.
961
0cbf2b82
JH
962JH/29 Move Events support from Experimental to mainline, enabled by default
963 and removable for a build by defining DISABLE_EVENT.
964
f2f2c91b
JH
965JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
966
ce325893
JH
967JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
968 cached by the daemon.
969
de78e2d5
JH
970JH/32 Move Redis support from Experimental to mainline, enabled for a build
971 by defining LOOKUP_REDIS. The libhiredis library is required.
972
379ba7d0
JH
973JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
974 keys are given for lookup.
975
f444c2c7
JH
976JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
977 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
978 only supported when built with TLS support. The PolarSSL SHA routines
979 are still used when the TLS library is too old for convenient support.
f444c2c7 980
a57b6200
JH
981JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
982 openssl_options), for security. OpenSSL forces this from version 1.1.0
983 server-side so match that on older versions.
984
07c73177 985JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 986 allocation for $value could be released as the expansion processing
07c73177 987 concluded, but leaving the global pointer active for it.
fa01e4f8 988
4f6ae5c3
JH
989JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
990 and to use the domains and local_parts ACL conditions.
991
1bc460a6
JH
992JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
993 incorrectly not doubled on cutthrough transmission, hence seen as a
994 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 995 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
996 via the normal store-and-forward channel. This could result in duplicates
997 received - but deduplicating mailstores were liable to retain only the
998 initial truncated version.
999
ab9152ff 1000JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1001
67e87fcf
JH
1002JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1003
ab9152ff
JH
1004JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1005 we're in there, support oversigning also; bug 1309.
1006
af483912
JH
1007JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1008
bc3c7bb7 1009HS/04 Add support for keep_environment and add_environment options.
df3def24 1010
13559da6
JH
1011JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1012 either intentional arithmetic overflow during PRNG, or testing config-
1013 induced overflows.
1014
59eaad2b
JH
1015JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1016 delivery resulted in actual delivery. Cancel cutthrough before DATA
1017 stage.
1018
f9334a28
JH
1019JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1020 rejects a recipient: pass the reject to the originator.
1021
dc8091e7
JH
1022JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1023 Many were false-positives and ignorable, but it's worth fixing the
1024 former class.
1025
dfe7d917
JH
1026JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1027 for the new environment-manipulation done at startup. Move the routines
1028 from being local to tls.c to being global via the os.c file.
1029
93cc2d6e
JH
1030JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1031 an extract embedded as result-arg for a map, the first arg for extract
1032 is unavailable so we cannot tell if this is a numbered or keyed
1033 extraction. Accept either.
1034
13559da6 1035
9c695f6d
JH
1036Exim version 4.86
1037-----------------
4c57a40e 1038
9c695f6d
JH
1039JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1040 expanded.
1041
506900af
JH
1042JH/02 The smtp transport option "multi_domain" is now expanded.
1043
ad07e9ad
JH
1044JH/03 The smtp transport now requests PRDR by default, if the server offers
1045 it.
1046
01a4a5c5 1047JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1048 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1049 can be used to disable this per-host. The build option
1050 EXPERIMENTAL_CERTNAMES is withdrawn.
1051
cb1d7830 1052JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1053 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1054 For GnuTLS, only version 3.0.20 or later.
1055
610ff438 1056JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1057 (but not required) by default. The verification status is now logged by
1058 default, for both outbound TLS and client-certificate supplying inbound
1059 TLS connections
610ff438 1060
f926e272
JH
1061JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1062 sites use this now.
1063
50dc7409
JH
1064JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1065 Status Notification (bounce) messages are now MIME format per RFC 3464.
1066 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1067 under the control of the dsn_advertise_hosts option, and routers may
1068 have a dsn_lasthop option.
1069
0f0c8159
JH
1070JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1071 default, modifiable by a malware= option. The list separator for
23763898 1072 the options can now be changed in the usual way. Bug 68.
4e71661f 1073
1ad6489e
JH
1074JH/10 The smtp_receive_timeout main option is now expanded before use.
1075
aeaf5db3
JH
1076JH/11 The incoming_interface log option now also enables logging of the
1077 local interface on delivery outgoing connections.
1078
5032d1cf
JH
1079JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1080 if the interface and destination host and port all match.
1081
7e8360e6
JH
1082JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1083 /defer_ok option.
1084
c5f280e2
AL
1085JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1086 Patch from Andrew Lewis.
1087
fd4d8871 1088JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1089 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1090 modifiers per server. Patch originally by <rommer@active.by>.
1091
1092JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1093 and remote servers. Remote servers can be IPv6 addresses, and
1094 specify a port-range.
fd4d8871 1095
23763898
JH
1096JH/17 Bug 68: The spamd_address main option now supports an optional
1097 timeout value per server.
1098
2ad78978
JH
1099JH/18 Bug 1581: Router and transport options headers_add/remove can
1100 now have the list separator specified.
1101
8a512ed5 1102JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1103 option values.
8a512ed5 1104
82c0c8ea 1105JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1106 under OpenSSL.
1107
cc00f4af
JH
1108JH/21 Support for the A6 type of dns record is withdrawn.
1109
82c0c8ea
JH
1110JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1111 rather than the verbs used.
1112
b980ed83
JH
1113JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1114 from 255 to 1024 chars.
1115
6c9ed72e
JH
1116JH/24 Verification callouts now attempt to use TLS by default.
1117
cfab9d68 1118HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1119 are generic router options now. The defaults didn't change.
50dc7409 1120
f846c8f5
JH
1121JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1122 Original patch from Alexander Shikoff, worked over by JH.
1123
fd4c285c
HSHR
1124HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1125 files if ZCAT_COMMAND is not executable.
1126
4c04137d 1127JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1128
d2a2c69b
JH
1129JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1130
8241d8dd
JH
1131JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1132 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1133 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1134 (and we were inconsistent anyway for A-only vs AAAA+A).
1135
1f12df4d
JH
1136JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1137
1f155f8e
JH
1138JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1139 when evaluating $sender_host_dnssec.
1140
1705dd20
JH
1141JH/31 Check the HELO verification lookup for DNSSEC, adding new
1142 $sender_helo_dnssec variable.
1143
038597d2
PP
1144JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1145
474f71bf
JH
1146JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1147
7137ca4b
JH
1148JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1149
dcb1095c
JH
1150JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1151 documented as working, but never had. Support all but $spam_report.
1152
2f460950
JH
1153JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1154 added for tls authenticator.
1155
2f680c0c
HSHR
1156HS/03 Add perl_taintmode main config option
1157
9c695f6d 1158
e449c3b0
TL
1159Exim version 4.85
1160-----------------
4c57a40e 1161
e449c3b0
TL
1162TL/01 When running the test suite, the README says that variables such as
1163 no_msglog_check are global and can be placed anywhere in a specific
1164 test's script, however it was observed that placement needed to be near
1165 the beginning for it to behave that way. Changed the runtest perl
1166 script to read through the entire script once to detect and set these
1167 variables, reset to the beginning of the script, and then run through
1168 the script parsing/test process like normal.
1169
ac20058f
TL
1170TL/02 The BSD's have an arc4random API. One of the functions to induce
1171 adding randomness was arc4random_stir(), but it has been removed in
1172 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1173 function when detected.
1174
a9b8ec8b
JH
1175JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1176 cause callback expansion.
1177
6286d7c4
TL
1178TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1179 syntax errors in an expansion can be treated as a string instead of
1180 logging or causing an error, due to the internal use of bool_lax
1181 instead of bool when processing it.
1182
0f06b4f2 1183JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1184 server certificates when making smtp deliveries.
1185
be36e572
JH
1186JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1187
ac4ef9bd
JH
1188JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1189
0eb51736
TL
1190TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1191
c713ca4b
TL
1192TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1193 Merged patch from Sebastian Wiedenroth.
e449c3b0 1194
bd21a787
WB
1195JH/05 Fix results-pipe from transport process. Several recipients, combined
1196 with certificate use, exposed issues where response data items split
1197 over buffer boundaries were not parsed properly. This eventually
1198 resulted in duplicates being sent. This issue only became common enough
4c04137d 1199 to notice due to the introduction of connection certificate information,
bd21a787
WB
1200 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1201
8bc732e8
JH
1202JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1203 size buffer was used, resulting in syntax errors when an expansion
1204 exceeded it.
1205
a7fec7a7
JH
1206JH/07 Add support for directories of certificates when compiled with a GnuTLS
1207 version 3.3.6 or later.
1208
4c04137d 1209JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1210 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1211 both become "event_action", the variables become $event_name, $event_data
aec45841 1212 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1213 routers, transports and related events. The tls:cert event is now also
1214 raised for inbound connections, if the main configuration event_action
1215 option is defined.
774ef2d7 1216
eca4debb
TL
1217TL/06 In test suite, disable OCSP for old versions of openssl which contained
1218 early OCSP support, but no stapling (appears to be less than 1.0.0).
1219
8d692470
JH
1220JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1221 server certificate names available under the smtp transport option
1222 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1223 matches.
1224
e9477a08
JH
1225JH/10 Time-related extraction expansions from certificates now use the main
1226 option "timezone" setting for output formatting, and are consistent
1227 between OpenSSL and GnuTLS compilations. Bug 1541.
1228
ad4c5ff9
JH
1229JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1230 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1231
1232JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1233 include certificate info, eximon was claiming there were spoolfile
1234 syntax errors.
1235
3394b36a 1236JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1237
1238JH/14 Log delivery-related information more consistently, using the sequence
1239 "H=<name> [<ip>]" wherever possible.
1240
3394b36a
TL
1241TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1242 are problematic for Debian distribution, omit them from the release
1243 tarball.
1244
ad4c5ff9
JH
1245JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1246
4c04137d 1247JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1248 Bug 1561.
1249
1250JH/17 Fix a null-indirection in certextract expansions when a nondefault
1251 output list separator was used.
1252
8bc732e8 1253
1f0ebb98
TL
1254Exim version 4.84
1255-----------------
09728d20
TL
1256TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1257 checkers that were complaining about end of non-void function with no
1258 return.
1f0ebb98 1259
a612424f 1260JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1261 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1262
1263JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1264
1265TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1266 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1267
1f0ebb98 1268
c0e56233
TF
1269Exim version 4.83
1270-----------------
1271
1272TF/01 Correctly close the server side of TLS when forking for delivery.
1273
1274 When a message was received over SMTP with TLS, Exim failed to clear up
1275 the incoming connection properly after forking off the child process to
1276 deliver the message. In some situations the subsequent outgoing
1277 delivery connection happened to have the same fd number as the incoming
1278 connection previously had. Exim would try to use TLS and fail, logging
1279 a "Bad file descriptor" error.
1280
7245734e
TF
1281TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1282 utilities have not been installed.
1283
fd5dad68
JH
1284JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1285 temporary space as the ACL may create new global variables.
1286
5428a946
TL
1287TL/01 LDAP support uses per connection or global context settings, depending
1288 upon the detected version of the libraries at build time.
1289
a3c86431
TL
1290TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1291 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1292 were a direct connection from the outside internet. PPv2 support was
1293 updated based on HAProxy spec change in May 2014.
a3c86431 1294
aa26e137
JH
1295JH/02 Add ${listextract {number}{list}{success}{fail}}.
1296
5a1b8443
WB
1297TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1298 Properly escape header and check for NULL return.
1299
72c9e342
PP
1300PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1301 not dns_use_dnssec.
1302
76f44207
WB
1303JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1304
770747fd
MFM
1305TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1306 characters in header names, implemented as a verify condition.
1307 Contributed by Michael Fischer v. Mollard.
1308
8ddef691 1309TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1310 results permerror and temperror. Previous values are deprecated but
1311 still accepted. In a future release, err_perm and err_temp will be
1312 completely removed, which will be a backward incompatibility if the
1313 ACL tests for either of these two old results. Patch contributed by
8ddef691 1314 user bes-internal on the mailing list.
c0e56233 1315
b9c2e32f
AR
1316JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1317
e45a1c37
JH
1318JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1319 selectors, in both main and reject logs.
1320
67d81c10
JH
1321JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1322 failed delivery.
1323
b1f8e4f8
JH
1324JH/07 Add malware type "sock" for talking to simple daemon.
1325
511a6c14 1326JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1327
1328JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1329 routers/transports under cutthrough routing.
214042d2 1330
51c7471d
JH
1331JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1332 numbers. Touch up "bool" conditional to keep the same definition.
1333
3695be34
TL
1334TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1335
1e06383a
TL
1336JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1337
76146973
JH
1338JH/12 Expand items in router/transport headers_add or headers_remove lists
1339 individually rather than the list as a whole. Bug 1452.
1340
1341 Required for reasonable handling of multiple headers_ options when
1342 they may be empty; requires that headers_remove items with embedded
1343 colons must have them doubled (or the list-separator changed).
1344
8c8b8274
TL
1345TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1346 view the policy declared in the DMARC record. Currently, $dmarc_status
1347 is a combined value of both the record presence and the result of the
1348 analysis.
b1f8e4f8 1349
35aba663
JH
1350JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1351
8c51eead 1352JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1353 dnslookup router and the smtp transport (applying to the forward
1354 lookup).
8c51eead 1355
deae092e
HS
1356TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1357 of ldap servers used for a specific lookup. Patch provided by Heiko
1358 Schlichting.
35aba663 1359
fd3b6a4a 1360JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1361 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1362
8d91c6dc
LT
1363TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1364 Patch submitted by Lars Timman.
1365
2b4a568d
JH
1366JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1367
d2af03f4
HS
1368TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1369 Requires trusted mode and valid format message id, aborts otherwise.
1370 Patch contributed by Heiko Schlichting.
1371
9d1c15ef
JH
1372JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1373 certextract with support for various fields. Bug 1358.
1374
44662487
JH
1375JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1376 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1377 hosts_request_ocsp.
1378
ed3bba5f 1379JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1380 operate on certificate variables to give certificate fingerprints
9ef9101c 1381 Also new ${sha256:cert_variable}.
44662487 1382
8ccd00b1
JH
1383JH/23 The PRDR feature is moved from being Experimental into the mainline.
1384
8ded8589
TL
1385TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1386 Christian Aistleitner.
1387
f2de3a33
JH
1388JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1389
6eb02f88
TL
1390TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1391 file. Patch from Wolfgang Breyha.
1392
00bff6f6
JH
1393JH/25 Expand the coverage of the delivery $host and $host_address to
1394 client authenticators run in verify callout. Bug 1476.
1395
071c51f7
JH
1396JH/26 Port service names are now accepted for tls_on_connect_ports, to
1397 align with daemon_smtp_ports. Bug 72.
1398
a6d4c44e
TF
1399TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1400 support and error reporting did not work properly.
1401
3ae173e7
ACK
1402TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1403 and is readable. Patch from Andrew Colin Kissa.
1404
c13d09b8
TL
1405TL/14 Enhance documentation of ${run expansion and how it parses the
1406 commandline after expansion, particularly in the case when an
1407 unquoted variable expansion results in an empty value.
1408
0df4ab80
JH
1409JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1410
66be95e0
PP
1411PP/02 Fix internal collision of T_APL on systems which support RFC3123
1412 by renaming away from it. Addresses GH issue 15, reported by
1413 Jasper Wallace.
1414
1bd0d12b
JH
1415JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1416
0de7239e
TL
1417TL/15 SECURITY: prevent double expansion in math comparison functions
1418 (can expand unsanitized data). Not remotely exploitable.
1419 CVE-2014-2972
1420
fd3b6a4a 1421
2c422e6f 1422Exim version 4.82
98a90c36
PP
1423-----------------
1424
1425PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1426
12f69989
PP
1427PP/02 Make -n do something, by making it not do something.
1428 When combined with -bP, the name of an option is not output.
1429
54c90be1
PP
1430PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1431 by GnuTLS.
1432
1f4a55da
PP
1433PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1434 $sender_host_name and config options to manage this, and basic check
1435 routines.
1436
13363eba 1437PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1438
66645890 1439PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1440 (Only plugin which currently uses this is kerberos4, which nobody should
1441 be using, but we should make it available and other future plugins might
1442 conceivably use it, even though it would break NAT; stuff *should* be
1443 using channel bindings instead).
66645890 1444
a3fb9793 1445PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1446 name; added for Sendmail compatibility; requires admin caller.
1447 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1448 just ignore it); requires trusted caller.
a3fb9793 1449 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1450 Bugzilla 1117.
a3fb9793 1451
d27f98fe 1452TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1453
6822b909
TL
1454TL/02 Add +smtp_confirmation as a default logging option.
1455
e7568d51
TL
1456TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1457 Patch by Magnus Holmgren from 2007-02-20.
1458
ae0e32ee 1459TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1460 Bugzilla 1283 - Spec typo.
97f42f10 1461 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1462
1463TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1464
e2658fff
TL
1465TL/06 Add Experimental DMARC support using libopendmarc libraries.
1466
83712b39
TL
1467TL/07 Fix an out of order global option causing a segfault. Reported to dev
1468 mailing list by by Dmitry Isaikin.
1469
976b7e9f
JH
1470JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1471
be4a1376
JH
1472JH/02 Support "G" suffix to numbers in ${if comparisons.
1473
ec4b68e5
PP
1474PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1475
d7148a07
NM
1476NM/01 Bugzilla 1197 - Spec typo
1477 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1478
585121e2 1479JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1480
2519e60d
TL
1481PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1482 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1483 function.
a5f239e4 1484
13d08c90
PP
1485PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1486 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1487
bef3ea7f
JH
1488JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1489 "acl {{name}{arg}...}", and optional args on acl condition
1490 "acl = name arg..."
a5f239e4 1491
846726c5
JH
1492JH/05 Permit multiple router/transport headers_add/remove lines.
1493
3a796370
JH
1494JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1495
ea722490 1496JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1497 Performance patch from Paul Fisher. Bugzilla 1262.
1498
b1b05573
JH
1499JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1500 Bugzilla 884.
1501
362145b5
JH
1502JH/09 Add $headers_added variable, with content from use of ACL modifier
1503 add_header (but not yet added to the message). Bugzilla 199.
1504
3c0a92dc
JH
1505JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1506 Pulled from Bugzilla 817 by Wolfgang Breyha.
1507
6d7c6175
PP
1508PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1509 CVE-2012-5671
e78e6ecf 1510 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1511
6f123593
JH
1512JH/11 Add A= logging on delivery lines, and a client_set_id option on
1513 authenticators.
1514
c8e2fc1e
JH
1515JH/12 Add optional authenticated_sender logging to A= and a log_selector
1516 for control.
1517
005ac57f
PP
1518PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1519
3f1df0e3
PP
1520PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1521 advertise SMTP AUTH mechanism to us, instead of a generic
1522 protocol violation error. Also, make Exim more robust to bad
1523 data from the Dovecot auth socket.
1524
67bd1ab3
TF
1525TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1526
1527 When a queue runner is handling a message, Exim first routes the
1528 recipient addresses, during which it prunes them based on the retry
1529 hints database. After that it attempts to deliver the message to
1530 any remaining recipients. It then updates the hints database using
1531 the retry rules.
1532
1533 So if a recipient address works intermittently, it can get repeatedly
1534 deferred at routing time. The retry hints record remains fresh so the
1535 address never reaches the final cutoff time.
1536
1537 This is a fairly common occurrence when a user is bumping up against
1538 their storage quota. Exim had some logic in its local delivery code
1539 to deal with this. However it did not apply to per-recipient defers
1540 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1541
1ddeb334
TF
1542 This change adds a proper retry rule check during routing so that the
1543 final cutoff time is checked against the message's age. We only do
1544 this check if there is an address retry record and there is not a
1545 domain retry record; this implies that previous attempts to handle
1546 the address had the retry_use_local_parts option turned on. We use
1547 this as an approximation for the destination being like a local
1548 delivery, as in LMTP.
67bd1ab3
TF
1549
1550 I suspect this new check makes the old local delivery cutoff check
1551 redundant, but I have not verified this so I left the code in place.
1552
326cdc37
TF
1553TF/02 Correct gecos expansion when From: is a prefix of the username.
1554
1555 Test 0254 submits a message to Exim with the header
1556
1557 Resent-From: f
1558
1559 When I ran the test suite under the user fanf2, Exim expanded
1560 the header to contain my full name, whereas it should have added
1561 a Resent-Sender: header. It erroneously treats any prefix of the
1562 username as equal to the username.
1563
1564 This change corrects that bug.
1565
f62514b3
GF
1566GF/01 DCC debug and logging tidyup
1567 Error conditions log to paniclog rather than rejectlog.
1568 Debug lines prefixed by "DCC: " to remove any ambiguity.
1569
eb505532
TF
1570TF/03 Avoid unnecessary rebuilds of lookup-related code.
1571
14c7b357
PP
1572PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1573 Bug spotted by Jeremy Harris; was flawed since initial commit.
1574 Would have resulted in OCSP responses post-SNI triggering an Exim
1575 NULL dereference and crash.
1576
94eaf700
PP
1577JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1578
6f5a440a
PP
1579PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1580 Bug detection, analysis and fix by Samuel Thibault.
1581 Bugzilla 1331, Debian bug #698092.
1582
514ee161
SC
1583SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1584
fd98a5c6
JH
1585JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1586 Server implementation by Todd Lyons, client by JH.
1587 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1588 config variable "prdr_enable" controls whether the server
1589 advertises the facility. If the client requests PRDR a new
1590 acl_data_smtp_prdr ACL is called once for each recipient, after
1591 the body content is received and before the acl_smtp_data ACL.
4c04137d 1592 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
1593 on the smtp transport, and the server advertisement.
1594 Default client logging of deliveries and rejections involving
1595 PRDR are flagged with the string "PRDR".
1596
035c7f1e
PP
1597PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1598 fclose(). Diagnosis by Todd Lyons.
1599
ff284120
PP
1600PP/17 Update configure.default to handle IPv6 localhost better.
1601 Patch by Alain Williams (plus minor tweaks).
1602 Bugzilla 880.
1603
26e72755
PP
1604PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1605 This is now consistent with GnuTLS, and is now documented: the
1606 previous undocumented portable approach to treating the option as
1607 unset was to force an expansion failure. That still works, and
1608 an empty string is now equivalent.
1609
0fbd9bff
PP
1610PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1611 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1612 not performing validation itself.
1613
700d22f3
PP
1614PP/20 Added force_command boolean option to pipe transport.
1615 Patch from Nick Koston, of cPanel Inc.
1616
fcc8e047
JH
1617JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1618 Bugzilla 321, 823.
1619
4c04137d 1620TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 1621
8c020188
PP
1622PP/21 Fix eximon continuous updating with timestamped log-files.
1623 Broken in a format-string cleanup in 4.80, missed when I repaired the
1624 other false fix of the same issue.
1625 Report and fix from Heiko Schlichting.
1626 Bugzilla 1363.
1627
d13cdd30
PP
1628PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1629 Report from Prashanth Katuri.
1630
e2fbf4a2
PP
1631PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1632 It's SecureTransport, so affects any MacOS clients which use the
1633 system-integrated TLS libraries, including email clients.
1634
f4c1088b
PP
1635PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1636 using a MIME ACL for non-SMTP local injection.
1637 Report and assistance in diagnosis by Warren Baker.
1638
c5c2182f
PP
1639TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1640
73431ca9
JH
1641JH/16 Fix comparisons for 64b. Bugzilla 1385.
1642
2d07a215
TL
1643TL/09 Add expansion variable $authenticated_fail_id to keep track of
1644 last id that failed so it may be referenced in subsequent ACL's.
1645
a30a8861
TL
1646TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1647 Alexander Miroch.
1648
33382dd9
TL
1649TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1650 ldap library initialization, allowing self-signed CA's to be
1651 used. Also properly sets require_cert option later in code by
1652 using NULL (global ldap config) instead of ldap handle (per
1653 session). Bug diagnosis and testing by alxgomz.
6d7c6175 1654
046172e6
TL
1655TL/12 Enhanced documentation in the ratelimit.pl script provided in
1656 the src/util/ subdirectory.
1657
581d7bee 1658TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 1659 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
1660 EXPERIMENTAL_TPDA.
1661
1662TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1663 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1664 redis_servers = needs to be configured which will be used by the redis
1665 lookup. Patch from Warren Baker, of The Packet Hub.
1666
237b2cf2
TL
1667TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1668
9fc5a352
TL
1669TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1670 hostname or reverse DNS when processing a host list. Used suggestions
1671 from multiple comments on this bug.
1a7b746d 1672
b10e4ec2
TL
1673TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1674
e2cebd74
TL
1675TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1676 Missed a few lines, added it to make the runtest require no keyboard
1677 interaction.
1678
1679TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1680 contains upper case chars. Make router use caseful_local_part.
1681
2519e60d
TL
1682TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1683 support when GnuTLS has been built with p11-kit.
1684
e78e6ecf 1685
4263f395
PP
1686Exim version 4.80.1
1687-------------------
1688
1689PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1690 CVE-2012-5671
2c422e6f 1691 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 1692
ea722490 1693
b1770b6e 1694Exim version 4.80
0599f9cf
PP
1695-----------------
1696
1697PP/01 Handle short writes when writing local log-files.
1698 In practice, only affects FreeBSD (8 onwards).
1699 Bugzilla 1053, with thanks to Dmitry Isaikin.
1700
23c7e742
NM
1701NM/01 Bugzilla 949 - Documentation tweak
1702
b322aac8
NM
1703NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1704 improved.
1705
4a891427
NM
1706NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1707
c1e794ba 1708PP/02 Implemented gsasl authenticator.
b322aac8 1709
97753960
PP
1710PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1711
1712PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1713 `pkg-config foo` for cflags/libs.
1714
df6303fa
PP
1715PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1716 with rest of GSASL and with heimdal_gssapi.
1717
7e6a8985
PP
1718PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1719 `pkg-config foo` for cflags/libs for the TLS implementation.
1720
f1e05cc7 1721PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
1722 properties get this fed in as external SSF. A number of robustness
1723 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 1724
4c287009
PP
1725PP/08 cyrus_sasl server now expands the server_realm option.
1726
b98bb9ac
PP
1727PP/09 Bugzilla 1214 - Log authentication information in reject log.
1728 Patch by Jeremy Harris.
1729
4a6a987a
PP
1730PP/10 Added dbmjz lookup type.
1731
c45dd180 1732PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 1733
7db8d074
PP
1734PP/12 MAIL args handles TAB as well as SP, for better interop with
1735 non-compliant senders.
1736 Analysis and variant patch by Todd Lyons.
1737
eae0036b 1738NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 1739 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
1740 Patch from Dirk Mueller <dmueller@suse.com>
1741
dec5017e
PP
1742PP/13 tls_peerdn now print-escaped for spool files.
1743 Observed some $tls_peerdn in wild which contained \n, which resulted
1744 in spool file corruption.
1745
c80c5570
PP
1746PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1747 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1748 or write after TLS renegotiation, which otherwise led to messages
1749 "Got SSL error 2".
1750
076b11e2
PP
1751TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1752 as a tracking header (ie: a signed header comes before the signature).
1753 Patch from Wolfgang Breyha.
1754
5407bfff
JH
1755JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1756 comma-sep list; embedded commas doubled.
1757
9e45c72b
PP
1758JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1759
e74376d8
PP
1760PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1761 diagnostics.
1762 Report and patch from Dmitry Banschikov.
1763
4c04137d 1764PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
1765 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1766 failures. We appear to now support TLS1.1+ with Exim.
1767
7be682ca
PP
1768PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1769 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
1770 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1771 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 1772
ef840681
PP
1773PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1774 NULL dereference. Report and patch from Alun Jones.
1775
5bfb4cdf
PP
1776PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1777 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1778 Not seeing resolver debug output on NetBSD, but suspect this is a
1779 resolver implementation change.
1780
c6e95d22
PP
1781PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1782 Left warnings. Added "eximon gdb" invocation mode.
1783
9cbad13b
PP
1784PP/21 Defaulting "accept_8bitmime" to true, not false.
1785
9ee44efb
PP
1786PP/22 Added -bw for inetd wait mode support.
1787
6a6084f8
PP
1788PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1789 locate the relevant includes and libraries. Made this the default.
1790
12dd53c7
PP
1791PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1792 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1793
9e45c72b 1794JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
1795 This may cause build issues on older platforms.
1796
17c76198
PP
1797PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1798 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1799 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1800 Added SNI support via GnuTLS too.
af3498d6 1801 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 1802
53947857 1803PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 1804
eae0036b 1805PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
1806 Applied second patch from Janne, implementing suggestion to default
1807 multiple-strings-in-record handling to match SPF spec.
eae0036b 1808
9e45c72b 1809JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 1810
7390e768
PP
1811PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1812 read-only, out of scope).
1813 Patch from Wolfgang Breyha, report from Stuart Northfield.
1814
08488c86
PP
1815PP/29 Fix three issues highlighted by clang analyser static analysis.
1816 Only crash-plausible issue would require the Cambridge-specific
1817 iplookup router and a misconfiguration.
1818 Report from Marcin Mirosław.
1819
6475bd82
PP
1820PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1821
81f91683
PP
1822PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1823 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1824 As part of this, removing so much warning spew let me fix some minor
1825 real issues in debug logging.
1826
5779e6aa
PP
1827PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1828 assignment on my part. Fixed.
1829
3375e053
PP
1830PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1831 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1832 Janne Snabb (who went above and beyond: thank you).
1833
1834PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1835 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
1836 relatively easy to get wrong. Should also expose TLS library linkage
1837 problems.
3375e053 1838
9d26b8c0
PP
1839PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1840 64-bit ${eval} (JH/03).
1841
57eb9e91 1842PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
1843 GNU libc to support some of the 64-bit stuff, should not lead to
1844 conflicts. Defined before os.h is pulled in, so if a given platform
1845 needs to override this, it can.
1846
16880d1a
PP
1847PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1848 protection layer was required, which is not implemented.
1849 Bugzilla 1254, patch from Wolfgang Breyha.
1850
a799883d
PP
1851PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1852 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1853 tls_dhparam take prime identifiers. Also unbreak combination of
1854 OpenSSL+DH_params+TLSSNI.
1855
3ecab157 1856PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 1857
0599f9cf 1858
867fcbf5
PP
1859Exim version 4.77
1860-----------------
1861
1862PP/01 Solaris build fix for Oracle's LDAP libraries.
1863 Bugzilla 1109, patch from Stephen Usher.
1864
f1a29782
TF
1865TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1866
ab42bd23
TK
1867TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1868 whitespace trailer
867fcbf5 1869
0ca0cf52
TF
1870TF/02 Fix a couple more cases where we did not log the error message
1871 when unlink() failed. See also change 4.74-TF/03.
1872
921b12ca
TF
1873TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1874 lock up or crash if it happened to be inside a call to libc when it
1875 got a SIGUSR1 from exiwhat.
1876
1877 The SIGUSR1 handler appends the current process status to the process
1878 log which is later printed by exiwhat. It used to use the general
1879 purpose logging code to do this, but several functions it calls are
1880 not safe for signals.
1881
1882 The new output code in the SIGUSR1 handler is specific to the process
1883 log, and simple enough that it's easy to inspect for signal safety.
1884 Removing some special cases also simplifies the general logging code.
1885 Removing the spurious timestamps from the process log simplifies
1886 exiwhat.
1887
c99ce5c9
TF
1888TF/04 Improved ratelimit ACL condition.
1889
1890 The /noupdate option has been deprecated in favour of /readonly which
1891 has clearer semantics. The /leaky, /strict, and /readonly update modes
1892 are mutually exclusive. The update mode is no longer included in the
1893 database key; it just determines when the database is updated. (This
4c04137d 1894 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
1895
1896 Exim now checks that the per_* options are used with an update mode that
1897 makes sense for the current ACL. For example, when Exim is processing a
1898 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1899 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1900 must specify per_mail/readonly. If you omit the update mode it defaults to
1901 /leaky where that makes sense (as before) or /readonly where required.
1902
1903 The /noupdate option is now undocumented but still supported for
1904 backwards compatibility. It is equivalent to /readonly except that in
1905 ACLs where /readonly is required you may specify /leaky/noupdate or
1906 /strict/noupdate which are treated the same as /readonly.
1907
1908 A useful new feature is the /count= option. This is a generalization
1909 of the per_byte option, so that you can measure the throughput of other
1910 aggregate values. For example, the per_byte option is now equivalent
1911 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1912
1913 The per_rcpt option has been generalized using the /count= mechanism
1914 (though it's more complicated than the per_byte equivalence). When it is
1915 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1916 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1917 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1918 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1919 Note that using per_rcpt with a non-readonly update mode in more than
1920 one ACL will cause the recipients to be double-counted. (The per_mail
1921 and per_byte options don't have this problem.)
1922
1923 The handling of very low rates has changed slightly. If the computed rate
1924 is less than the event's count (usually one) then this event is the first
1925 after a long gap. In this case the rate is set to the same as this event's
1926 count, so that the first message of a spam run is counted properly.
1927
1928 The major new feature is a mechanism for counting the rate of unique
1929 events. The new per_addr option counts the number of different
1930 recipients that someone has sent messages to in the last time period. It
1931 behaves like per_rcpt if all the recipient addresses are different, but
1932 duplicate recipient addresses do not increase the measured rate. Like
1933 the /count= option this is a general mechanism, so the per_addr option
1934 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1935 example, measure the rate that a client uses different sender addresses
1936 with the options per_mail/unique=$sender_address. There are further
1937 details in the main documentation.
1938
3634fc25
TF
1939TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1940
792e8a19
TF
1941TF/06 Removed a few PCRE remnants.
1942
5901f0ab
TF
1943TF/07 Automatically extract Exim's version number from tags in the git
1944 repository when doing development or release builds.
1945
7f2a2a43
PP
1946PP/02 Raise smtp_cmd_buffer_size to 16kB.
1947 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 1948
061b7ebd
PP
1949PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1950 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1951 Bugzilla 97.
1952
e12f8c32
PP
1953PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1954
9e949f00 1955PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
1956 Bugzilla 1078. Patch from John Horne.
1957
1958PP/06 Stop make process more reliably on build failure.
1959 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 1960
555ae6af 1961PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
1962 Bugzilla 1089. Patch from Heiko Schlittermann.
1963
1964PP/08 Handle ${run} returning more data than OS pipe buffer size.
1965 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 1966
6f7fe114
PP
1967PP/09 Handle IPv6 addresses with SPF.
1968 Bugzilla 860. Patch from Wolfgang Breyha.
1969
c566dd90
PP
1970PP/10 GnuTLS: support TLS 1.2 & 1.1.
1971 Bugzilla 1156.
89f897c3
PP
1972 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1973 Bugzilla 1095.
c566dd90 1974
d6cc7c78 1975PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
1976 New compile-time build option, EXPAND_LISTMATCH_RHS.
1977 New expansion conditions, "inlist", "inlisti".
1978
0d0e4455
PP
1979PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1980
3399bb60 1981PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
1982
1983PP/14 fix log_write() format string regression from TF/03.
1984 Bugzilla 1152. Patch from Dmitry Isaikin.
1985
0ca0cf52 1986
10906672
PP
1987Exim version 4.76
1988-----------------
1989
1990PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1991
754a0503
PP
1992PP/02 Harmonised TLS library version reporting; only show if debugging.
1993 Layout now matches that introduced for other libraries in 4.74 PP/03.
1994
c0c7b2da
PP
1995PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1996
e97d1f08
PP
1997PP/04 New "dns_use_edns0" global option.
1998
084c1d8c
PP
1999PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2000 Bugzilla 1098.
2001
4e7ee012
PP
2002PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2003 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2004
c8d52a00
PP
2005TK/01 Updated PolarSSL code to 0.14.2.
2006 Bugzilla 1097. Patch from Andreas Metzler.
2007
54e7ce4a
PP
2008PP/07 Catch divide-by-zero in ${eval:...}.
2009 Fixes bugzilla 1102.
2010
5ee6f336
PP
2011PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2012 Bugzilla 1104.
2013
c8d52a00 2014TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2015 format-string attack -- SECURITY: remote arbitrary code execution.
2016
2017TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2018 time unintentionally subject to list matching rules, letting the header
2019 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2020 arbitrary string expansion). This allowed for information disclosure.
2021
2022PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2023 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2024
10906672 2025
aa097c4c
NM
2026Exim version 4.75
2027-----------------
2028
4c04137d 2029NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2030 Bugzilla 1073
2031
7f3d9eff
TF
2032TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2033 This fixes portability to compilers other than gcc, notably
2034 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2035
159f52d2
TF
2036TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2037 makefiles for portability to HP-UX and POSIX correctness.
2038
0cc9542a
PP
2039PP/01 Permit LOOKUP_foo enabling on the make command-line.
2040 Also via indented variable definition in the Makefile.
2041 (Debugging by Oliver Heesakkers).
2042
f7274286
PP
2043PP/02 Restore caching of spamd results with expanded spamd_address.
2044 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2045
7b797365
PP
2046PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2047 Improves build reliability. Fix from: Frank Elsner
2048
caacae52
NM
2049NM/02 Fix wide character breakage in the rfc2047 coding
2050 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2051
09dcaba9
NM
2052NM/03 Allow underscore in dnslist lookups
2053 Fixes bug 1026. Patch from Graeme Fowler
2054
bc19a55b
PP
2055PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2056 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2057
bd4c9759
NM
2058NM/04 Fixed exiqgrep to cope with mailq missing size issue
2059 Fixes bug 943.
2060
b72aab72
PP
2061PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2062 is logged, to avoid truncation. Patch from John Horne.
2063
2fe76745
PP
2064PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2065 Patch from Jakob Hirsch.
2066
76aa570c
PP
2067PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2068 SQL string expansion failure details.
2069 Patch from Andrey Oktyabrski.
2070
f1e5fef5
PP
2071PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2072 Patch from Simon Arlott.
2073
4d805ee9
PP
2074PP/09 New lookups functionality failed to compile on old gcc which rejects
2075 extern declarations in function scope.
2076 Patch from Oliver Fleischmann
2077
cd59ab18
PP
2078PP/10 Use sig_atomic_t for flags set from signal handlers.
2079 Check getgroups() return and improve debugging.
2080 Fixed developed for diagnosis in bug 927 (which turned out to be
2081 a kernel bug).
2082
332f5cf3
PP
2083PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2084 Patch from Mark Zealey.
2085
29cfeb94
PP
2086PP/12 Bugzilla 1056: Improved spamd server selection.
2087 Patch from Mark Zealey.
2088
660242ad
PP
2089PP/13 Bugzilla 1086: Deal with maildir quota file races.
2090 Based on patch from Heiko Schlittermann.
2091
bc4bc4c5
PP
2092PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2093 Patch from Uwe Doering, sign-off by Michael Haardt.
2094
2e64baa9
NM
2095NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2096 variable declaration deep within a block. Bug and patch from
2097 Dennis Davis.
2098
4c04137d 2099PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2100
6bac1a9a
PP
2101PP/16 Make DISABLE_DKIM build knob functional.
2102
552193f0
NM
2103NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2104 Patch by Simon Arlott
baeee2c1 2105
1b587e48
TF
2106TF/03 Fix valgrind.h portability to C89 compilers that do not support
2107 variable argument macros. Our copy now differs from upstream.
2108
aa097c4c 2109
8c07b69f
TF
2110Exim version 4.74
2111-----------------
2112
2113TF/01 Failure to get a lock on a hints database can have serious
2114 consequences so log it to the panic log.
2115
c0ea85ab
TF
2116TF/02 Log LMTP confirmation messages in the same way as SMTP,
2117 controlled using the smtp_confirmation log selector.
2118
0761d44e
TF
2119TF/03 Include the error message when we fail to unlink a spool file.
2120
0a349494
PP
2121DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2122 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2123 for maintaining out-of-tree patches for some time.
2124
2125PP/01 Bugzilla 139: Documentation and portability issues.
2126 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2127 Handle per-OS dynamic-module compilation flags.
2128
fea24b2e
PP
2129PP/02 Let /dev/null have normal permissions.
2130 The 4.73 fixes were a little too stringent and complained about the
2131 permissions on /dev/null. Exempt it from some checks.
2132 Reported by Andreas M. Kirchwitz.
2133
6545de78
PP
2134PP/03 Report version information for many libraries, including
2135 Exim version information for dynamically loaded libraries. Created
2136 version.h, now support a version extension string for distributors
2137 who patch heavily. Dynamic module ABI change.
2138
1670ef10
PP
2139PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2140 privilege escalation vulnerability whereby the Exim run-time user
2141 can cause root to append content of the attacker's choosing to
2142 arbitrary files.
2143
c0886197
PP
2144PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2145 (Wolfgang Breyha)
2146
b7487bce
PP
2147PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2148 If dropping privileges for untrusted macros, we disabled normal logging
2149 on the basis that it would fail; for the Exim run-time user, this is not
2150 the case, and it resulted in successful deliveries going unlogged.
2151 Fixed. Reported by Andreas Metzler.
2152
8c07b69f 2153
97fd1e48 2154Exim version 4.73
ed7f7860 2155-----------------
97fd1e48
PP
2156
2157PP/01 Date: & Message-Id: revert to normally being appended to a message,
2158 only prepend for the Resent-* case. Fixes regression introduced in
2159 Exim 4.70 by NM/22 for Bugzilla 607.
2160
6901c596
PP
2161PP/02 Include check_rfc2047_length in configure.default because we're seeing
2162 increasing numbers of administrators be bitten by this.
2163
a8c8d6b5
JJ
2164JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2165
77bb000f
PP
2166PP/03 Bugzilla 994: added openssl_options main configuration option.
2167
a29e5231
PP
2168PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2169
ec5a0394 2170PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2171
55c75993
PP
2172PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2173
453a6645 2174PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2175 without a peer certificate, leading to a segfault because of an
2176 assumption that peers always have certificates. Be a little more
453a6645
PP
2177 paranoid. Problem reported by Martin Tscholak.
2178
8544e77a
PP
2179PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2180 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2181 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2182 CL also introduces -bmalware, various -d+acl logging additions and
2183 more caution in buffer sizes.
8544e77a 2184
83e029d5
PP
2185PP/09 Implemented reverse_ip expansion operator.
2186
ed7f7860
PP
2187PP/10 Bugzilla 937: provide a "debug" ACL control.
2188
7d9f747b
PP
2189PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2190
4b2241d2
PP
2191PP/12 Bugzilla 973: Implement --version.
2192
10385c15
PP
2193PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2194
dbc4b90d
PP
2195PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2196
532be449
PP
2197PP/15 Bugzilla 816: support multiple condition rules on Routers.
2198
6a8de854 2199PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2200 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2201 ignore trailing whitespace.
6a8de854 2202
5dc43717
JJ
2203JJ/02 prevent non-panic DKIM error from being sent to paniclog
2204
2205JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2206 "exim" to be used
55c75993 2207
3346ab01
PP
2208PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2209 Notification from Dr Andrew Aitchison.
2210
491fab4c
PP
2211PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2212 ExtendedDetectionInfo response format.
2213 Notification from John Horne.
2214
13eb9497
PP
2215PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2216 compatible.
2217
2218PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2219 XSL and documented dependency on system catalogs, with examples of how
2220 it normally works.
2221
7f36d675
DW
2222DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2223 access.
2224
c1d94452
DW
2225DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2226 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2227 configuration file which is writeable by the Exim user or group.
2228
e2f5dc15
DW
2229DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2230 of configuration files to cover files specified with the -C option if
2231 they are going to be used with root privileges, not just the default
2232 configuration file.
2233
cd25e41d
DW
2234DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2235 option (effectively making it always true).
2236
261dc43e
DW
2237DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2238 files to be used while preserving root privileges.
2239
fa32850b
DW
2240DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2241 that rogue child processes cannot use them.
2242
79d4bc3d
PP
2243PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2244 run-time user, instead of root.
2245
43236f35 2246PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2247 Exim run-time user without dropping privileges.
2248
fb08281f
DW
2249DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2250 result string, instead of calling string_vformat() twice with the same
2251 arguments.
3346ab01 2252
74935b98
DW
2253DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2254 for other users. Others should always drop root privileges if they use
2255 -C on the command line, even for a whitelisted configure file.
2256
90b6341f
DW
2257DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2258
57730b52
ML
2259NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2260
66581d1e 2261
465e92cf
JJ
2262Exim version 4.72
2263-----------------
2264
453a6645
PP
2265JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2266 $data_path, and $header_path variables; fixed documentation bugs and
2267 typos
465e92cf 2268
453a6645
PP
2269JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2270 exipick to access non-standard spools, including the "frozen" queue
2271 (Finput)
edae0343 2272
9bd3e22c
NM
2273NM/01 Bugzilla 965: Support mysql stored procedures.
2274 Patch from Alain Williams
2275
bb576ff7
NM
2276NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2277
5a1a5845
NM
2278NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2279 Patch from Andreas Metzler
2280
981a9fad
NM
2281NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2282 Patch from Kirill Miazine
2283
7fc497ee
NM
2284NM/05 Bugzilla 671: Added umask to procmail example.
2285
1a41defa
JJ
2286JJ/03 installed exipick 20100323.0, fixing doc bug
2287
a466095c 2288NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2289 directory. Notification and patch from Dan Rosenberg.
a466095c 2290
94a6bd0b
NM
2291TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2292
2293TK/02 Improve log output when DKIM signing operation fails.
2294
2295MH/01 Treat the transport option dkim_domain as a colon separated
2296 list, not as a single string, and sign the message with each element,
2297 omitting multiple occurences of the same signer.
2298
c1b141a8
NM
2299NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2300 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2301
b26eacf1 2302NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2303 Patch by Simon Arlott
2304
179c5980 2305PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2306 MBX locking. Notification from Dan Rosenberg.
179c5980 2307
9bd3e22c 2308
7c6d71af
NM
2309Exim version 4.71
2310-----------------
2311
7d9f747b 2312TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2313
f013fb92
NM
2314NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2315
0eb8eedd
NM
2316NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2317
663ee6d9
NM
2318NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2319
177ebd9b
NM
2320NM/04 Bugzilla 915: Flag broken perl installation during build.
2321
7c6d71af 2322
210f147e
NM
2323Exim version 4.70
2324-----------------
2325
cdd3bb85 2326TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2327 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2328
2329TK/02 Write list of recipients to X-Envelope-Sender header when building
2330 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2331 Hirsch).
cdd3bb85
TK
2332
2333TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2334 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2335 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2336
2337TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2338 by Mark Daniel Reidel <mr@df.eu>.
2339
210f147e
NM
2340NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2341 When building exim an external PCRE library is now needed -
2342 PCRE is a system library on the majority of modern systems.
2343 See entry on PCRE_LIBS in EDITME file.
2344
deafd5b3
NM
2345NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2346 conversation. Added nologin parameter to request.
7d9f747b 2347 Patch contributed by Kirill Miazine.
deafd5b3 2348
089793a4
TF
2349TF/01 Do not log submission mode rewrites if they do not change the address.
2350
5f16ca82
TF
2351TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2352
dae9d94e 2353NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2354 log files in place. Contributed by Roberto Lima.
dae9d94e 2355
7d9f747b 2356NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2357
06864c44
TF
2358TF/03 Bugzilla 615: When checking the local_parts router precondition
2359 after a local_part_suffix or local_part_prefix option, Exim now
2360 does not use the address's named list lookup cache, since this
2361 contains cached lookups for the whole local part.
2362
65a7d8c3 2363NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2364 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2365
23510047 2366TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2367
7d9f747b 2368NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2369
7d8eec3a 2370NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2371 Patch provided by Jan Srzednicki.
6c588e74 2372
89dec7b6
TF
2373TF/05 Leading white space used to be stripped from $spam_report which
2374 wrecked the formatting. Now it is preserved.
5f28a6e8 2375
a99de90c
TF
2376TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2377 that they are available at delivery time.
2378
e2803e40
TF
2379TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2380
7199e1ee
TF
2381TF/08 TLS error reporting now respects the incoming_interface and
2382 incoming_port log selectors.
2383
e276e04b
TF
2384TF/09 Produce a more useful error message if an SMTP transport's hosts
2385 setting expands to an empty string.
2386
ce552449 2387NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2388 Patch provided by Phil Pennock.
ce552449 2389
e765a0f1 2390NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2391 Patch provided by Richard Godbee.
e765a0f1 2392
4f054c63 2393NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2394 acl_smtp_notquit, added index entry.
4f054c63 2395
7d9f747b
PP
2396NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2397 Patch provided by Eugene Bujak.
24c929a2 2398
7d9f747b
PP
2399NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2400 accept(). Patch provided by Maxim Dounin.
cf73943b 2401
b52bc06e 2402NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2403 Patch provided by Phil Pennock.
b52bc06e 2404
447de4b0
NM
2405NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2406
4c69d561 2407NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2408 Patch provided by Brad "anomie" Jorsch.
4c69d561 2409
d5c39246 2410NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2411 Patch provided by Dean Brooks.
9b989985 2412
0b23848a
TK
2413TK/05 Add native DKIM support (does not depend on external libraries).
2414
8f3414a1 2415NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2416 Patch provided by Graeme Fowler.
e2aacdfd 2417
fb6f955d
NM
2418NM/16 Bugzilla 851: Documentation example syntax fix.
2419
2420NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2421
7d9f747b
PP
2422NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2423 lsearch.
dbb0bf41 2424
7d9f747b
PP
2425NM/19 Bugzilla 745: TLS version reporting.
2426 Patch provided by Phil Pennock.
f3766eb5 2427
7d9f747b
PP
2428NM/20 Bugzilla 167: bool: condition support.
2429 Patch provided by Phil Pennock.
36f12725 2430
7d9f747b
PP
2431NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2432 clients. Patch provided by Phil Pennock.
e6060e2c 2433
7d9f747b
PP
2434NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2435 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2436
7d9f747b
PP
2437NM/23 Bugzilla 687: Fix misparses in eximstats.
2438 Patch provided by Heiko Schlittermann.
d5c13d66 2439
7d9f747b
PP
2440NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2441 Patch provided by Heiko Schlittermann.
b2335c0b 2442
7d9f747b 2443NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2444 plus update to original patch.
f4cd9433 2445
7d9f747b 2446NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2447
7d9f747b
PP
2448NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2449 Patch provided by David Brownlee.
8dc71ab3 2450
7d9f747b 2451NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2452
7d9f747b 2453NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2454
7d9f747b 2455NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2456
7d9f747b 2457NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2458
17792b53 2459NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2460 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2461
7d9f747b
PP
2462NM/33 Bugzilla 898: Transport filter timeout fix.
2463 Patch by Todd Rinaldo.
52383f8f 2464
91576cec 2465NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2466 Patch by Serge Demonchaux.
5ca6d115 2467
7d9f747b
PP
2468NM/35 Bugzilla 39: Base64 decode bug fixes.
2469 Patch by Jakob Hirsch.
baee9eee 2470
7d9f747b 2471NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2472
7d9f747b 2473NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2474
7d9f747b 2475NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2476
7d9f747b 2477NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2478
deafd5b3 2479
47db1125
NM
2480Exim version 4.69
2481-----------------
2482
4b3504d0
TK
2483TK/01 Add preliminary DKIM support. Currently requires a forked version of
2484 ALT-N's libdkim that I have put here:
2485 http://duncanthrax.net/exim-experimental/
2486
2487 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2488 were called 'true' and it seems that C99 defines that as a reserved
2489 keyword to be used with 'bool' variable types. That means you could
2490 not include C99-style headers which use bools without triggering
2491 build errors in sieve.c.
2492
81ea09ca
NM
2493NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2494 as mailq or other aliases. Changed the --help handling significantly
2495 to do whats expected. exim_usage() emits usage/help information.
2496
f13cddcb
SC
2497SC/01 Added the -bylocaldomain option to eximstats.
2498
7d9f747b 2499NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2500
7d9f747b 2501NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2502
7d9f747b 2503NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2504
2505
eb4c0de6
PH
2506Exim version 4.68
2507-----------------
2508
2509PH/01 Another patch from the Sieve maintainer.
2510
6a3bceb1
PH
2511PH/02 When an IPv6 address is converted to a string for single-key lookup
2512 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2513 dots are used instead of colons so that keys in lsearch files need not
2514 contain colons. This was done some time before quoting was made available
2515 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2516 (notated using the quote facility) so as to distinguish them from IPv4
2517 keys. This meant that lookups for IP addresses in host lists did not work
2518 for iplsearch lookups.
2519
2520 This has been fixed by arranging for IPv6 addresses to be expressed with
2521 colons if the lookup type is iplsearch. This is not incompatible, because
2522 previously such lookups could never work.
2523
4c04137d 2524 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2525 ordinary lsearch keys. However, making the change in all cases is
2526 incompatible and would probably break a number of configurations.
2527
2e30fa9d
TK
2528TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2529 version.
2530
0806a9c5
MH
2531MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2532 conversion specification without a maximum field width, thereby enabling
2533 a rogue spamd server to cause a buffer overflow. While nobody in their
2534 right mind would setup Exim to query an untrusted spamd server, an
2535 attacker that gains access to a server running spamd could potentially
2536 exploit this vulnerability to run arbitrary code as the Exim user.
2537
ae276964
TK
2538TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2539 $primary_hostname instead of what libspf2 thinks the hosts name is.
2540
0f2cbd1b
MH
2541MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2542 a directory entry by the name of the lookup key. Previously, if a
2543 symlink pointed to a non-existing file or a file in a directory that
2544 Exim lacked permissions to read, a lookup for a key matching that
2545 symlink would fail. Now it is enough that a matching directory entry
2546 exists, symlink or not. (Bugzilla 503.)
2547
2b85bce7
PH
2548PH/03 The body_linecount and body_zerocount variables are now exported in the
2549 local_scan API.
2550
93655c46
PH
2551PH/04 Added the $dnslist_matched variable.
2552
6c512171
PH
2553PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2554 This means they are set thereafter only if the connection becomes
2555 encrypted.
2556
2557PH/06 Added the client_condition to authenticators so that some can be skipped
2558 by clients under certain conditions.
2559
aa6dc513
PH
2560PH/07 The error message for a badly-placed control=no_multiline_responses left
2561 "_responses" off the end of the name.
2562
a96603a0
PH
2563PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2564
8f240103
PH
2565PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2566 (without spaces) instead of just copying the configuration text.
2567
2568PH/10 Added the /noupdate option to the ratelimit ACL condition.
2569
d677b2f2
PH
2570PH/11 Added $max_received_linelength.
2571
d52120f2
PH
2572PH/12 Added +ignore_defer and +include_defer to host lists.
2573
64f2600a
PH
2574PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2575 way in which PCRE > 7.0 is built.
2576
8669f003
PH
2577PH/14 Implemented queue_only_load_latch.
2578
a4dc33a8
PH
2579PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2580 MAIL command. The effect was to mangle the value on 64-bit systems.
2581
d6a60c0f
PH
2582PH/16 Another patch from the Sieve maintainer.
2583
8f128379
PH
2584PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2585
8932dffe
PH
2586PH/18 If a system quota error occurred while trying to create the file for
2587 a maildir delivery, the message "Mailbox is full" was not appended to the
2588 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2589 only to a quota excession during the actual writing of the file.
d6a60c0f 2590
ddea74fa 2591PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
2592 characters?) which causes problems in log lines. The DN values are now
2593 passed through string_printing() before being added to log lines.
2594
ddea74fa 2595PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
2596 and InterBase are left for another time.)
2597
ddea74fa
PH
2598PH/21 Added message_body_newlines option.
2599
ce9f225c
PH
2600PH/22 Guard against possible overflow in moan_check_errorcopy().
2601
19897d52
PH
2602PH/23 POSIX allows open() to be a macro; guard against that.
2603
bc64a74d
PH
2604PH/24 If the recipient of an error message contained an @ in the local part
2605 (suitably quoted, of course), incorrect values were put in $domain and
2606 $local_part during the evaluation of errors_copy.
2607
eb4c0de6 2608
b4ed4da0
PH
2609Exim version 4.67
2610-----------------
2611
22ad45c9
MH
2612MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2613 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2614 Jan Srzednicki.
2615
b4ed4da0
PH
2616PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2617 issue a MAIL command.
2618
431b7361
PH
2619PH/02 In an ACL statement such as
2620
2621 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2622
2623 if a client was not listed at all, or was listed with a value other than
2624 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2625 the condition was not true (as it should be), so access was not denied.
2626 The bug was that the ! inversion was incorrectly passed on to the second
2627 item. This has been fixed.
2628
2629PH/03 Added additional dnslists conditions == and =& which are different from
2630 = and & when the dns lookup returns more than one IP address.
2631
83da1223
PH
2632PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2633 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2634
54fc8428
PH
2635PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2636 FSYNC, which compiles an option called disable_fsync that allows for
2637 bypassing fsync(). The documentation is heavily laced with warnings.
2638
34c5e8dd
SC
2639SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2640
bbe15da8
PH
2641PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2642 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2643 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2644 including adding "make clean"; (3) Added -fPIC when compiling the test
2645 dynamically loaded module, to get rid of a warning.
2646
0e8a9471
MH
2647MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2648 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2649 = 0s. The bug is otherwise harmless.
2650
f0872424
PH
2651PH/07 There was a bug in the dovecot authenticator such that the value of
2652 $auth1 could be overwritten, and so not correctly preserved, after a
2653 successful authentication. This usually meant that the value preserved by
2654 the server_setid option was incorrect.
2655
b01dd148
PH
2656PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2657
6bf342e1
PH
2658PH/09 Installed PCRE release 7.0.
2659
273f34d0
PH
2660PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2661 run for batched SMTP input. It is now run at the start of every message
2662 in the batch. While fixing this I discovered that the process information
2663 (output by running exiwhat) was not always getting set for -bs and -bS
2664 input. This is fixed, and it now also says "batched" for BSMTP.
2665
cf8b11a5
PH
2666PH/11 Added control=no_pipelining.
2667
41c7c167
PH
2668PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2669 patch, slightly modified), and move the expansion of helo_data till after
2670 the connection is made in the smtp transport (so it can use these
2671 values).
2672
9c57cbc0
PH
2673PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2674
f3f065bb
PH
2675PH/14 Added log_selector = +pid.
2676
047bdd8c
PH
2677PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2678
0ce9abe6
PH
2679PH/16 Add ${if forany and ${if forall.
2680
0e22dfd1
PH
2681PH/17 Added dsn_from option to vary the From: line in DSNs.
2682
4c590bd1
PH
2683PH/18 Flush SMTP output before performing a callout, unless control =
2684 no_callout_flush is set.
2685
09945f1e
PH
2686PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2687 was true (the default) a successful delivery failed to delete the retry
2688 item, thus causing premature timeout of the address. The bug is now
2689 fixed.
2690
c51b8e75
PH
2691PH/20 Added hosts_avoid_pipelining to the smtp transport.
2692
e28326d8 2693PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 2694 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
2695 other ACL rejections are.
2696
75b1493f
PH
2697PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2698 with slight modification.
2699
7c5214ec
PH
2700PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2701 draft, changing the syntax and factoring some duplicate code".
2702
4311097e
PH
2703PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2704 for deliveries of the second and subsequent messages over the same SMTP
2705 connection.
2706
29f89cad
PH
2707PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2708 ${reduce, with only minor "tidies".
2709
5e687460
SC
2710SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2711
c3611384
PH
2712PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2713 expansion side effects.
2714
5a11a7b4
PH
2715PH/27 When a message times out after an over-quota error from an Exim-imposed
2716 quota, the bounce message says "mailbox is full". This message was not
2717 being given when it was a system quota that was exceeded. It now should
2718 be the same.
2719
0e20aff9
MH
2720MH/03 Made $recipients available in local_scan(). local_scan() already has
2721 better access to the recipient list through recipients_list[], but
2722 $recipients can be useful in postmaster-provided expansion strings.
2723
ca86f471
PH
2724PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2725 in the case of a MAIL command with additional options following the
2726 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2727 were accidentally chopped off.
2728
a14e5636
PH
2729PH/29 SMTP synchronization checks are implemented when a command is read -
2730 there is a check that no more input is waiting when there shouldn't be
2731 any. However, for some commands, a delay in an ACL can mean that it is
2732 some time before the response is written. In this time, more input might
2733 arrive, invalidly. So now there are extra checks after an ACL has run for
2734 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2735 pipelining has not been advertised.
2736
ec95d1a6
PH
2737PH/30 MH's patch to allow iscntrl() characters to be list separators.
2738
42855d71
PH
2739PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2740 returned in the SMTP response when smtp_return_error_details was false.
2741 This has been fixed.
2742
57c2c631
PH
2743PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2744 instead of the C I/O that was originally supplied, because problems were
2745 reported on Solaris.
2746
58c01c94
PH
2747PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2748 Exim which did not show up earlier: it was assuming that a call to
2749 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2750 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2751 was a macro that became an assignment, so it seemed to work. This has
2752 changed to a proper function call with a void return, hence the compile
2753 error. Exim's code has been fixed.
2754
dee5a20a
PH
2755PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2756 cpus.
2757
d2ee6114
PH
2758PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2759
b2d5182b
PH
2760PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2761
79749a79
PH
2762PH/37 If a message is not accepted after it has had an id assigned (e.g.
2763 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
2764 "Completed" line in the log. When some messages of this type were
2765 selected by exigrep, they were listed as "not completed". Others were
2766 picked up by some special patterns. I have improved the selection
2767 criteria to be more general.
79749a79 2768
c456d9bb
PH
2769PH/38 The host_find_failed option in the manualroute router can now be set
2770 to "ignore", to completely ignore a host whose IP address cannot be
2771 found. If all hosts are ignored, the behaviour is controlled by the new
2772 host_all_ignored option.
2773
cd9868ec
PH
2774PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2775 homing or because of multiple MX records with /mx) generated more than
2776 one IP address, and the following item turned out to be the local host,
2777 all the secondary addresses of the first item were incorrectly removed
2778 from the list, along with the local host and any following hosts (which
2779 is what is supposed to happen).
2780
ebeaf996
PH
2781PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2782 whoever called Exim into the -H file. In the case of the daemon it was
2783 behaving confusingly. When first started, it used values for whoever
2784 started the daemon, but after a SIGHUP it used the Exim user (because it
2785 calls itself on a restart). I have changed the code so that it now always
2786 uses the Exim user.
2787
2679d413
PH
2788PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2789 message are rejected with the same error (e.g. no authentication or bad
2790 sender address), and a DATA command is nevertheless sent (as can happen
2791 with PIPELINING or a stupid MUA), the error message that was given to the
2792 RCPT commands is included in the rejection of the DATA command. This is
2793 intended to be helpful for MUAs that show only the final error to their
2794 users.
2795
84024b72
PH
2796PH/42 Another patch from the Sieve maintainer.
2797
8005d38e
SC
2798SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2799 Eximstats - Fixed some broken HTML links and added missing column headers
2800 (Jez Hancock).
2801 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2802 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2803
3298c6c6
SC
2804SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2805
a43a27c5
PH
2806PH/43 Yet another patch from the Sieve maintainer.
2807
58eb016e 2808PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
2809 the response to the final '.' that terminates a message, but only in the
2810 case where the client has not sent further data following the '.'
2811 (unfortunately, this is allowed). However, in many cases there won't be
2812 any further data because there won't be any more messages to send. A call
2813 to select() can be used: if it shows that the input is "ready", there is
2814 either input waiting, or the socket has been closed. An attempt to read
2815 the next input character can distinguish the two cases. Previously, Exim
58eb016e 2816 would have sent an OK response which the client would never have see.
563b63fa
PH
2817 This could lead to message repetition. This fix should cure that, at
2818 least in a lot of common cases.
58eb016e 2819
b43a74ea
PH
2820PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2821 advertised in response to EHLO.
2822
b4ed4da0 2823
5dd1517f
PH
2824Exim version 4.66
2825-----------------
2826
2827PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2828 fixed by 4.65/MH/01 (is this a record?) are fixed:
2829
2830 (i) An empty string was always treated as zero by the numeric comparison
2831 operators. This behaviour has been restored.
2832
2833 (ii) It is documented that the numeric comparison operators always treat
2834 their arguments as decimal numbers. This was broken in that numbers
2835 starting with 0 were being interpreted as octal.
2836
2837 While fixing these problems I realized that there was another issue that
2838 hadn't been noticed. Values of message_size_limit (both the global option
2839 and the transport option) were treated as octal if they started with 0.
2840 The documentation was vague. These values are now always treated as
2841 decimal, and I will make that clear in the documentation.
2842
2843
93cfa765
TK
2844Exim version 4.65
2845-----------------
2846
2847TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2848 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2849 versions. (#438)
2850
d6066548
MH
2851MH/01 Don't check that the operands of numeric comparison operators are
2852 integers when their expansion is in "skipping" mode (fixes bug
2853 introduced by 4.64-PH/07).
2854
4362ff0d
PH
2855PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2856 child addresses, Exim now panics and dies. Previously, because the count
2857 is held in a short int, deliveries were likely to be lost. As such a
2858 large number of recipients for a single message is ridiculous
2859 (performance will be very, very poor), I have chosen to impose a limit
2860 rather than extend the field.
2861
93cfa765 2862
944e9e9c
TF
2863Exim version 4.64
2864-----------------
aa41d2de 2865
21d74bd9
TK
2866TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2867 leftover -K file (the existence of which was triggered by #402).
2868 While we were at it, introduced process PID as part of the -K
2869 filename. This should rule out race conditions when creating
2870 these files.
2871
2872TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2873 processing considerably. Previous code took too long for large mails,
2874 triggering a timeout which in turn triggers #401.
2875
2876TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2877 in the DK code in transports.c. sendfile() is not really portable,
2878 hence the _LINUX specificness.
944e9e9c
TF
2879
2880TF/01 In the add_headers option to the mail command in an Exim filter,
2881 there was a bug that Exim would claim a syntax error in any
2882 header after the first one which had an odd number of characters
2883 in the field name.
2884
2b1c6e3a
PH
2885PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2886 callout verification, Exim cached a "reject" for the entire domain. This
2887 is correct for most verifications, but it is not correct for a recipient
2888 verification with use_sender or use_postmaster set, because in that case
2889 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2890 case of MAIL FROM:<> rejection from other early rejections (e.g.
2891 rejection of HELO). When verifying a recipient using a non-null MAIL
2892 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2893 Whatever the result of the callout, the value of the domain cache is
2894 left unchanged (for any other kind of callout, getting as far as trying
2895 RCPT means that the domain itself is ok).
2896
1f872c80
PH
2897PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2898 gcc 4.1.1 threw up.
2899
2900PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2901 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2902 session, the daemon ignores ECONNECT errors and logs others; it now
2903 ignores EPIPE as well.
2904
d203e649
PH
2905PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2906 (quoted-printable decoding).
2907
cc2ed8f7 2908PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 2909 later the small subsequent patch to fix an introduced bug.
f951fd57 2910
ddfcd446
PH
2911PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2912
d45b1de8
PH
2913PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2914
2915PH/08 An error is now given if message_size_limit is specified negative.
2916
38a0a95f 2917PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 2918 to be given (somewhat) arbitrary names.
38a0a95f 2919
a2405d83
JJ
2920JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2921 in 4.64-PH/09.
2922
2923JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2924 miscellaneous code fixes
2925
6ea85e9a
PH
2926PH/10 Added the log_reject_target ACL modifier to specify where to log
2927 rejections.
2928
26da7e20
PH
2929PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2930 hostname. This is wrong, because it relates to the incoming message (and
2931 probably the interface on which it is arriving) and not to the outgoing
2932 callout (which could be using a different interface). This has been
2933 changed to use the value of the helo_data option from the smtp transport
2934 instead - this is what is used when a message is actually being sent. If
2935 there is no remote transport (possible with a router that sets up host
2936 addresses), $smtp_active_hostname is used.
6ea85e9a 2937
14aa5a05 2938PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 2939 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
2940 (a) The code assumed that strncpy() returns a negative number on buffer
2941 overflow, which isn't the case. Replaced with Exim's string_format()
2942 function.
2943 (b) There were several signed/unsigned issues. I just did the minimum
2944 hacking in of casts. There is scope for a larger refactoring.
2945 (c) The code used strcasecmp() which is not a standard C function.
2946 Replaced with Exim's strcmpic() function.
2947 (d) The code set only $1; it now sets $auth1 as well.
2948 (e) A simple test gave the error "authentication client didn't specify
2949 service in request". It would seem that Dovecot has changed its
2950 interface. Fortunately there's a specification; I followed it and
2951 changed what the client sends and it appears to be working now.
2952
ff75a1f7
PH
2953PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2954 decoding.
2955
e6f6568e
PH
2956PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2957 address A is aliased to B and C, where B exists and C does not. Without
2958 -v the output is "A verified" because verification stops after a
2959 successful redirection if more than one address is generated. However,
2960 with -v the child addresses are also verified. Exim was outputting "A
2961 failed to verify" and then showing the successful verification for C,
2962 with its parentage. It now outputs "B failed to verify", showing B's
2963 parentage before showing the successful verification of C.
2964
d6f6e0dc
PH
2965PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2966 look up a TXT record in a specific list after matching in a combined
2967 list.
2968
322050c2
PH
2969PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2970 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2971 they consult the DNS. I had assumed they would set it the way they
2972 wanted; and indeed my experiments on Linux seem to show that in some
2973 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2974 To be on the safe side, however, I have now made the interface to
2975 host_find_byname() similar to host_find_bydns(), with an argument
2976 containing the DNS resolver options. The host_find_byname() function now
2977 sets these options at its start, just as host_find_bydns() does. The smtp
2978 transport options dns_qualify_single and dns_search_parents are passed to
2979 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2980 of host_find_byname() use the default settings of RES_DEFNAMES
2981 (qualify_single) but not RES_DNSRCH (search_parents).
2982
08955dd3
PH
2983PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2984 spool_read_header() do less string testing, by means of a preliminary
2985 switch on the second character of optional "-foo" lines. (This is
2986 overdue, caused by the large number of possibilities that now exist.
2987 Originally there were few.) While I was there, I also converted the
2988 str(n)cmp tests so they don't re-test the leading "-" and the first
2989 character, in the hope this might squeeze out yet more improvement.
2990
1eccaa59
PH
2991PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2992 flag allowing group syntax was set by the header_syntax check but not
2993 turned off, possible causing trouble later; (2) The flag was not being
2994 set at all for the header_verify test, causing "group"-style headers to
2995 be rejected. I have now set it in this case, and also caused header_
2996 verify to ignore an empty address taken from a group. While doing this, I
2997 came across some other cases where the code for allowing group syntax
2998 while scanning a header line wasn't quite right (mostly, not resetting
2999 the flag correctly in the right place). These bugs could have caused
3000 trouble for malformed header lines. I hope it is now all correct.
3001
602e59e5
PH
3002PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
3003 with the "reply" argument non-NULL. The code, however (which originally
3004 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
3005 but it didn't always do it. This confused somebody who was copying the
3006 code for some other use. I have removed all the tests.
3007
411ef850
PH
3008PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
3009 feature that was used to support insecure browsers during the U.S. crypto
3010 embargo. It requires special client support, and Exim is probably the
3011 only MTA that supported it -- and would never use it because real RSA is
3012 always available. This code has been removed, because it had the bad
3013 effect of slowing Exim down by computing (never used) parameters for the
3014 RSA_EXPORT functionality.
3015
7befa435
PH
3016PH/21 On the advice of Timo Sirainen, added a check to the dovecot
3017 authenticator to fail if there's a tab character in the incoming data
3018 (there should never be unless someone is messing about, as it's supposed
3019 to be base64-encoded). Also added, on Timo's advice, the "secured" option
3020 if the connection is using TLS or if the remote IP is the same as the
3021 local IP, and the "valid-client-cert option" if a client certificate has
3022 been verified.
3023
48da4259 3024PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
3025 authenticators. This can be used for authorization after authentication
3026 succeeds. (In the case of plaintext, it servers for both authentication
3027 and authorization.)
3028
48da4259
PH
3029PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
3030 if any retry times were supplied.
3031
d1d5595c
PH
3032PH/24 Exim crashed if verify=helo was activated during an incoming -bs
3033 connection, where there is no client IP address to check. In this
3034 situation, the verify now always succeeds.
3035
0ef732d9
PH
3036PH/25 Applied John Jetmore's -Mset patch.
3037
328895cc
PH
3038PH/26 Added -bem to be like -Mset, but loading a message from a file.
3039
fd700877
PH
3040PH/27 In a string expansion for a processed (not raw) header when multiple
3041 headers of the same name were present, leading whitespace was being
3042 removed from all of them, but trailing whitespace was being removed only
3043 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
3044 before concatenation. Completely empty headers in a concatenation (as
3045 before) are ignored.
fd700877 3046
8dce1a6f
PH
3047PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
3048 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
3049
17af4a17
PH
3050PH/29 [Removed. This was a change that I later backed out, and forgot to
3051 correct the ChangeLog entry (that I had efficiently created) before
3052 committing the later change.]
f6c332bd
PH
3053
3054PH/30 Exim was sometimes attempting to deliver messages that had suffered
3055 address errors (4xx response to RCPT) over the same connection as other
3056 messages routed to the same hosts. Such deliveries are always "forced",
3057 so retry times are not inspected. This resulted in far too many retries
3058 for the affected addresses. The effect occurred only when there were more
3059 hosts than the hosts_max_try setting in the smtp transport when it had
3060 the 4xx errors. Those hosts that it had tried were not added to the list
3061 of hosts for which the message was waiting, so if all were tried, there
3062 was no problem. Two fixes have been applied:
3063
3064 (i) If there are any address or message errors in an SMTP delivery, none
3065 of the hosts (tried or untried) are now added to the list of hosts
3066 for which the message is waiting, so the message should not be a
3067 candidate for sending over the same connection that was used for a
3068 successful delivery of some other message. This seems entirely
3069 reasonable: after all the message is NOT "waiting for some host".
3070 This is so "obvious" that I'm not sure why it wasn't done
3071 previously. Hope I haven't missed anything, but it can't do any
3072 harm, as the worst effect is to miss an optimization.
3073
3074 (ii) If, despite (i), such a delivery is accidentally attempted, the
3075 routing retry time is respected, so at least it doesn't keep
3076 hammering the server.
3077
c1114884
PH
3078PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
3079 in ${readsocket because some servers need this prod.
3080
7a0743eb
PH
3081PH/32 Added some extra debug output when updating a wait-xxx database.
3082
0d85fa3f
PH
3083PH/33 The hint "could be header name not terminated by colon", which has been
3084 given for certain expansion errors for a long time, was not being given
3085 for the ${if def:h_colon_omitted{... case.
3086
1bf43b78
PH
3087PH/34 The spec says: "With one important exception, whenever a domain list is
3088 being scanned, $domain contains the subject domain." There was at least
3089 one case where this was not true.
3090
520de300
PH
3091PH/35 The error "getsockname() failed: connection reset by peer" was being
3092 written to the panic log as well as the main log, but it isn't really
3093 panic-worthy as it just means the connection died rather early on. I have
3094 removed the panic log writing for the ECONNRESET error when getsockname()
3095 fails.
3096
48c7f9e2
PH
3097PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
3098 runs only) independently of the message's sender address. This meant
3099 that, if the 4xx error was in fact related to the sender, a different
3100 message to the same recipient with a different sender could confuse
4c04137d 3101 things. In particular, this can happen when sending to a greylisting
48c7f9e2
PH
3102 server, but other circumstances could also provoke similar problems.
3103 I have changed the default so that the retry time for these errors is now
3104 based a combination of the sender and recipient addresses. This change
3105 can be overridden by setting address_retry_include_sender=false in the
3106 smtp transport.
3107
99ea1c86
PH
3108PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
3109 remote server are returned as part of bounce messages. This was not
3110 happening for LMTP over a pipe (the lmtp transport), but now it is the
3111 same for both kinds of LMTP.
3112
a2042e78
PH
3113PH/38 Despite being documented as not happening, Exim was rewriting addresses
3114 in header lines that were in fact CNAMEs. This is no longer the case.
3115
4fbcfc2e
PH
3116PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
3117 and queue runs started by the daemon processed all messages. This has
3118 been fixed so that -R and -S can now usefully be given with -q<time>.
3119
aa41d2de
PH
3120PH/40 Import PCRE release 6.7 (fixes some bugs).
3121
af561417
PH
3122PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
3123
3cc66b45
PH
3124PH/42 Give an error if -q is specified more than once.
3125
194cc0e4
PH
3126PH/43 Renamed the variables $interface_address and $interface_port as
3127 $received_ip_address and $received_port, to make it clear that these
3128 values apply to message reception, and not to the outgoing interface when
3129 a message is delivered. (The old names remain recognized, of course.)
3130
a401ddaa
PH
3131PH/44 There was no timeout on the connect() call when using a Unix domain
3132 socket in the ${readsocket expansion. There now is.
3133
4e88a19f
PH
3134PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
3135 be meaningful with "accept".
3136
d7d7b289
SC
3137SC/01 Eximstats V1.43
3138 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
3139
3140SC/02 Eximstats V1.44
3141 Use a glob alias rather than an array ref in the generated
3142 parser. This improves both readability and performance.
3143
3144SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
3145 Collect SpamAssassin and rejection statistics.
3146 Don't display local sender or destination tables unless
3147 there is data to show.
3148 Added average volumes into the top table text output.
3149
3150SC/04 Eximstats V1.46
3151 Collect data on the number of addresses (recipients)
3152 as well as the number of messages.
3153
3154SC/05 Eximstats V1.47
3155 Added 'Message too big' to the list of mail rejection
3156 reasons (thanks to Marco Gaiarin).
3157
3158SC/06 Eximstats V1.48
3159 Mainlog lines which have GMT offsets and are too short to
3160 have a flag are now skipped.
3161
3162SC/07 Eximstats V1.49 (Alain Williams)
3163 Added the -emptyok flag.
3164
3165SC/08 Eximstats V1.50
3166 Fixes for obtaining the IP address from reject messages.
3167
0ea2a468
JJ
3168JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
3169 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
4c04137d 3170 whitespace changes from 4.64-PH/27
0ea2a468
JJ
3171
3172JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
3173 match 4.64-PH/13
3174
3175JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
3176 are found, allow negative numbers in numeric criteria)
3177
3178JJ/06 exipick.20061117.2, added new $message_body_missing variable
3179
3180JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
3181 to match changes made in 4.64-PH/43
3182
8a10f5a4
PH
3183PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
3184
30e18802
PH
3185PH/47 Put in an explicit test for a DNS lookup of an address record where the
3186 "domain" is actually an IP address, and force a failure. This locks out
3187 those revolvers/nameservers that support "A-for-A" lookups, in
3188 contravention of the specifications.
3189
55728a4f
PH
3190PH/48 When a host name was looked up from an IP address, and the subsequent
3191 forward lookup of the name timed out, the host name was left in
3192 $sender_host_name, contrary to the specification.
d7d7b289 3193
d7837193
PH
3194PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3195 restricted to single-key lookups, Exim was not diagnosing an error if
3196 * or *@ was used with a query-style lookup.
3197
87054a31
PH
3198PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3199
ea2c01d2
MH
3200MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3201 long ago, but noone interested enough thought of it. Let's just say that
3202 the "1.1" means that there are some new functions that weren't there at
3203 some point in the past.
3204
e4fa6968
PH
3205PH/51 Error processing for expansion failure of helo_data from an smtp
3206 transport during callout processing was broken.
3207
56f5d9bd
PH
3208PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3209 tested/used via the -bh/-bhc/-bs options.
3210
922e1c28
PH
3211PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3212 bug, fixed in subsequent PCRE releases).
3213
21eb6e72
PH
3214PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3215 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3216
a0540757
PH
3217PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3218
944e9e9c 3219
478be7b0
SC
3220Exim version 4.63
3221-----------------
3222
3223SC/01 Use a glob alias rather than an array ref in eximstats generated
3224 parser. This improves both readability and performance.
3225
3226SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3227 Don't display local sender or destination tables in eximstats unless
3228 there is data to show.
3229 Added average volumes into the eximstats top table text output.
3230
3231SC/03 Collect data on the number of addresses (recipients) as well
3232 as the number of messages in eximstats.
3233
2b965a65
TF
3234TF/01 Correct an error in the documentation for the redirect router. Exim
3235 does (usually) call initgroups() when daemonizing.
478be7b0 3236
45b91596
PH
3237TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3238 with consistent privilege compared to when running as a daemon.
478be7b0 3239
c59f5781
TF
3240TF/03 Note in the spec that $authenticated_id is not set for local
3241 submissions from trusted users.
3242
90fc3069
TF
3243TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3244 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3245
6083aca0
TF
3246TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3247 by adding some example configuration directives to the default
3248 configuration file. A little bit of work is required to uncomment the
3249 directives and define how usernames and passwords are checked, but
3250 there is now a framework to start from.
3251
765b530f
PH
3252PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3253 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3254 without this. I don't know how relevant this is to other LDAP libraries.
3255