ARC: fix crash in signing
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
446415f5
HSHR
1This document describes *changes* to previous versions, that might
2affect Exim's operation, with an unchanged configuration file. For new
3options, and new features, see the NewStuff file next to this ChangeLog.
495ae4b0 4
4c57a40e 5
40ed89b3
JH
6Exim version 4.93
7-----------------
8
8a40db1c
JH
9JH/01 OpenSSL: With debug enabled output keying information sufficient, server
10 side, to decode a TLS 1.3 packet capture.
40ed89b3 11
fc243e94 12JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
d7f31bb6
JH
13 Previously the default library behaviour applied, sending two, each in
14 its own TCP segment.
15
897024f1
JH
16JH/03 Debug output for ACL now gives the config file name and line number for
17 each verb.
18
f1be21cf
JH
19JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
20
fe12ec88
JH
21JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
22
05bf16f6
JH
23JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
24 buffer overrun for (non-chunking) other transports.
25
fc243e94
JH
26JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
27 TLS1.3, means that a server rejecting a client certificate is not visible
28 to the client until the first read of encrypted data (typically the
29 response to EHLO). Add detection for that case and treat it as a failed
30 TLS connection attempt, so that the normal retry-in-clear can work (if
31 suitably configured).
32
c05bdbd6 33JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
e2ff8e24
JB
34 and/or domain. Found and fixed by Jason Betts.
35
14bc9cf0
JH
36JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
37 configuration). If a CNAME target was not a wellformed name pattern, a
38 crash could result.
39
254f38d1
JH
40JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
41 the OS reports them interleaved with other addresses.
42
c09dbcfb
JH
43JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
44 used both for input and for a verify callout, both encrypted, SMTP
45 responses being sent by the server could be lost. This resulted in
46 dropped connections and sometimes bounces generated by a peer sending
47 to this system.
254f38d1 48
f9fc9427
JH
49JH/11 Harden plaintext authenticator against a badly misconfigured client-send
50 string. Previously it was possible to cause undefined behaviour in a
51 library routine (usually a crash). Found by "zerons".
52
e6024a5e
JH
53JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
54 output.
55
1fbf41cd
JH
56JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
57 API was removed, so update to use the newer ones.
58
3c55eef2 59JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
00c0dd4e 60 any timeout set, is taking a long time. Previously we would hang on to a
3c55eef2
JH
61 rotated logfile "forever" if the input was arriving with long gaps
62 (a previous attempt to fix addressed lack, for a long time, of initial
63 input).
64
cb80814d
HSHR
65HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
66 shared (NFS) environment. The length of the tempfile name is now
67 4 + 16 ("hdr.$message_exim_id") which might break on file
68 systems which restrict the file name length to lower values.
69 (It was "hdr.$pid".)
70
7d8d08c4 71HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
82a996b1
HSHR
72 shared (NFS) environment.
73
7d8d08c4 74HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
82a996b1
HSHR
75 did for all versions <4.90). Notably -M, -m, --invert, -I may be
76 affected.
77
bd83c6f9
JH
78JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
79 on some platforms for bit 31.
80
d9acfc1c
JH
81JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
82 to changes apparently associated with TLS1.3 handling some of the APIs
83 previously used were either nonfunctional or inappropriate. Strings
84 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
85 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
86 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
87 This affects log line X= elements, the $tls_{in,out}_cipher variables,
88 and the use of specific cipher names in the encrypted= ACL condition.
89
b10c87b3
JH
90JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
91
7a501c87
JH
92JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
93 verification result was not updated unless hosts_require_ocsp applied.
94
e5903596
JH
95JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
96 queue_list_requires_admin set to false, non-admin users were denied the
97 facility.
98
12d95aa6
JH
99JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
100 directory-of-certs mode. Previously they were advertised despite the
101 documentation.
102
96eb7d2a
JH
103JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
104 A single TCP connection by a client will now hold a TLS connection open
105 for multiple message deliveries, by default. Previoud the default was to
106 not do so.
107
59c0959a 108JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
01603eec
JH
109 default. If built with the facility, DANE will be used. The facility
110 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
111
112JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
de517fd3
JH
113 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
114 must be defined and you must still, unless you define DISABLE_TLS, manage
115 the the include-dir and library-file requirements that go with that
116 choice. Non-TLS builds are still supported.
59c0959a 117
48519cef
JH
118JH/24 Fix duplicated logging of peer name/address, on a transport connection-
119 reject under TFO.
96eb7d2a 120
efad2f41 121JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
4e48d56c 122 default. If the platform supports and has the facility enabled, it will
efad2f41
JH
123 be requested on all coneections.
124
4e48d56c
JH
125JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
126 controlled by the build-time option SUPPORT_PIPE_CONNECT.
127
6ee11061 128PP/01 Unbreak heimdal_gssapi, broken in 4.92.
0a5441fc 129
87abcb24
JH
130JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
131 success-DSN messages. Previously the From: header was always the default
132 one for these; the option was ignored.
6ee11061 133
0a5441fc
JH
134JH/28 Fix the timeout on smtp response to apply to the whole response.
135 Previously it was reset for every read, so a teergrubing peer sending
136 single bytes within the time limit could extend the connection for a
137 long time. Credit to Qualsys Security Advisory Team for the discovery.
138
436bda2a
JH
139JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
140 delivery address, which leaked information of the results of local
141 forwarding. Change to the original envelope recipient address, per
142 standards.
143
df98a6ff
JH
144JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
145 requested. Previously not bounce was generated and a log entry of
146 error ignored was made.
147
21aa0597
JH
148JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
149
f3ebb786
JH
150JH/32 Introduce a general tainting mechanism for values read from the input
151 channel, and values derived from them. Refuse to expand any tainted
152 values, to catch one form of exploit.
153
9fa4d5b4
RJ
154JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
155 was unused and the unexpanded text used for the test. Found and
156 fixed by Ruben Jenster.
157
bd231acd
JH
158JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
159 an attempt to use a TLS library read routine dereffed a nul pointer,
160 causing a segfault.
161
7b564712
JH
162JH/35 Bug 2409: filter out-of-spec chars from callout response before using
163 them in our smtp response.
164
9c6881f8 165JH/36 Have the general router option retry_use_local_part default to true when
dbbf21a7
JH
166 any of the restrictive preconditions are set (to anything). Previously it
167 was only for check_local user. The change removes one item of manual
168 configuration which is required for proper retries when a remote router
169 handles a subset of addresses for a domain.
170
9c6881f8
JH
171JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
172 link count into consideration.
173
7d8d08c4
JH
174HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
175 caused the extension of big_buffer, the following lines were ignored.
176
177JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
178 accordance with RFC 2308. Previously there was no expiry, so a longlived
179 receive process (eg. due to ACL delays) versus a short SOA value could
180 surprise.
181
c3aefacc
HSHR
182HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
183
1a2e76e1
JH
184JH/39 Promote DMARC support to mainline.
185
d6c829b9
JH
186JH/40 Bug 2452: Add a References: header to DSNs.
187
49132a3b
JH
188JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
189 parameters. The relevant library call is documented as "Deprecated: This
190 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
191 3.6.0, DH parameters are negotiated following RFC7919."
192
ab0e957b 193HS/06 Change the default of dnssec_request_domains to "*"
40ed89b3 194
c5040dfd
JH
195JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
196 carried on and emitted a BDAT command, even when PIPELINING was not
197 active.
198
13e70f55
JH
199JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
200 buffer was used for the filename, resulting in a trap when tainted
201 arguments (eg. $domain) were used.
202
2043336d
JH
203JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
204 recommended to avoid a possible server-load attack. The feature can be
205 re-enabled via the openssl_options main cofiguration option.
206
b2d54f83
JH
207JH/45 local_scan API: documented the current smtp_printf() call. This changed
208 for version 4.90 - adding a "more data" boolean to the arguments.
b3317cfa
JH
209 Bumped the ABI version number also, this having been missed previously;
210 release versions 4.90 to 4.92.3 inclusive were effectively broken in
211 respect of usage of smtp_printf() by either local_scan code or libraries
212 accessed via the ${dlfunc } expansion item. Both will need coding
213 adjustment for any calls to smtp_printf() to match the new function
214 signature; a FALSE value for the new argument is always safe.
b2d54f83 215
1bf08084
JH
216JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
217 the file-offset (which the Linux syscall does, and exim expects); this
218 resulted in an indefinite loop.
219
7af11cd0
JH
220JH/47 ARC: fix crash in signing, triggered when a configuration error failed
221 to do ARC verification. The Authentication-Results: header line added
222 by the configuration then had no ARC item.
223
c5040dfd 224
d99f54e4
JH
225Exim version 4.92
226-----------------
227
9723f966
JH
228JH/01 Remove code calling the customisable local_scan function, unless a new
229 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
230
231JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
64b67b65
JH
232 non-signal-safe functions being used.
233
234JH/03 Bug 2269: When presented with a received message having a stupidly large
235 number of DKIM-Signature headers, disable DKIM verification to avoid
236 a resource-consumption attack. The limit is set at twenty.
9723f966 237
ea7b1f16
JH
238JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
239 report of oldest_pass in ${authres } in consequence, and separate out
240 some descriptions of reasons for verification fail.
241
cfbb0d24
JH
242JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
243 files in the spool were present and unlocked. A queue-runner could spot
244 them, resulting in a duplicate delivery. Fix that by doing the unlock
0488984d
JH
245 after the unlink. Investigation by Tim Stewart. Take the opportunity to
246 add more error-checking on spoolfile handling while that code is being
cfbb0d24
JH
247 messed with.
248
85defcf0
PP
249PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
250 No known attacks, no CVE, this is defensive hardening.
251
1bd642c2
JH
252JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
253 a queue-runner could start a delivery while other operations were ongoing.
254 Cutthrough delivery was a common victim, resulting in duplicate delivery.
255 Found and investigated by Tim Stewart. Fix by using the open message data
256 file handle rather than opening another, and not locally closing it (which
257 releases a lock) for that case, while creating the temporary .eml format
258 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
259
2ddb4094
JH
260JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
261 $sender_verify_failure/$recipient_verify_failure to "random".
262
1613fd68
JH
263JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
264 legitimate.
265
e6057245
JH
266JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
267 Previously this would segfault.
268
7b9822bf
JH
269JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
270 segfault.
271
d8d9f930
JH
272JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
273 like zero, since the resolver should be doing this for us, But we need one
274 as a CNAME but no MX presence gets the CNAME returned; we need to check
275 that doesn't point to an MX to declare it "no MX returned" rather than
276 "error, loop". A new main option is added so the older capability of
277 following some limited number of chain links is maintained.
278
61e3f250
JH
279JH/12 Add client-ip info to non-pass iprev ${authres } lines.
280
7a8b9519
JH
281JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
282 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
283 now-deprecated earlier definitions used only specified the range up to TLS
284 1.2 (in the older-version library docs).
285
49e56fb3
JH
286JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
287
74f1a423
JH
288JH/15 Rework TLS client-side context management. Stop using a global, and
289 explicitly pass a context around. This enables future use of TLS for
290 connections to service-daemons (eg. malware scanning) while a client smtp
291 connection is using TLS; with cutthrough connections this is quite likely.
292
5054c4fd 293JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
JH
294
295JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 296
946515bf
JH
297JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
298 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
299 Previously the "utf8" would be re-prepended for every additional message.
300
8c34c611
JH
301JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
302 Previously thery were accepted, resulting in issues when attempting to
303 forward messages to a non-supporting MTA.
304
1bca4f5f
PP
305PP/02 Let -n work with printing macros too, not just options.
306
8a6b4e02
JH
307JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
308 one parent address was copied, and bogus data was used at delivery-logging
309 time. Either a crash (after delivery) or bogus log data could result.
310 Discovery and analysis by Tim Stewart.
311
0a682b6c
PP
312PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
313 Previously if the string ended mid-character, we did not insert the
314 promised '?' replacement.
315
c2c451ac
PP
316PP/04 Documentation: current string operators work on bytes, not codepoints.
317
8768d548
JH
318JH/21 Change as many as possible of the global flags into one-bit bitfields; these
319 should pack well giving a smaller memory footprint so better caching and
320 therefore performance. Group the declarations where this can't be done so
321 that the byte-sized flag variables are not interspersed among pointer
322 variables, giving a better chance of good packing by the compiler.
323
5455f548
JH
324JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
325 non-null, to avoid issues with sites running BATV. Previously reports were
326 sent with an empty envelope sender so looked like bounces.
327
25beaee4
MK
328JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
329 The ignore_error flag wasn't being returned from the filter subprocess so
330 was not set for later routers. Investigation and fix by Matthias Kurz.
331
7ea1237c 332JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 333 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
MK
334 -Mrm. Developement by Matthias Kurz, hacked on by JH.
335
ebda598a
JH
336JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
337 a "Gnu special" function, asprintf() in the DB utility binary builds; I
338 hope that is portable enough.
339
570cb1bd
JH
340JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
341 requiring a known-CA anchor certificate; make it now rely entirely on the
342 TLSA as an anchor. Checking the name on the leaf cert against the name
343 on the A-record for the host is still done for TA (but not for EE mode).
344
eb58ddf5
JH
345JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
346 included in delivery lines for non-proxied connections, when compiled with
347 SUPPORT_SOCKS and running with proxy logging enabled.
348
ffbc20ed
MK
349JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
350 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
351 move the existing event to fire before the normal logging of message
352 failure so that custom logging is bracketed by normal logging.
353
4e928780
MK
354JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
355 msg:fail:internal event. Developement by Matthias Kurz.
356
75c121f0 357JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 358 far too small for todays use of crypto signatures stored there. Go all
75c121f0
JH
359 the way to the max DNS message size of 64kB, even though this might be
360 overmuch for IOT constrained device use.
361
e30f4f43
JH
362JH/31 Fix a bad use of a copy function, which could be used to pointlessly
363 copy a string over itself. The library routine is documented as not
364 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
365
a45431fa
JH
366JH/32 For main options check_spool_space and check_inode_space, where the
367 platform supports 64b integers, support more than the previous 2^31 kB
368 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
369 the previous G, M, k.
370
c0fb53b7
JH
371JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
372 $authenticated_fail_id variable on authentication failure. Previously
373 it was unset.
374
6aac3239
JH
375JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
376 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
377 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
378 GNUTLS_SEC_PARAM_MEDIUM.
379
5a2a0989
JH
380JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
381 side. Previously we would continue as if no SNI had been received.
382
de6f74f2 383JH/36 Harden the handling of string-lists. When a list consisted of a sole
b72f857f
JH
384 "<" character, which should be a list-separator specification, we walked
385 off past the nul-terimation.
386
de6f74f2
JH
387JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
388 causes) even when the retry time is not yet met. Previously they were
389 not, meaning that when (say) an account was over-quota and temp-rejecting,
390 and multiple senders' messages were queued, only one sender would get
391 notified on each configured delay_warning cycle.
392
aa6e77af 393JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 394
25fa0868
JH
395JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
396 cipher-suites, an error can be left on the stack even for a succeeding
397 accept; this results in impossible error messages when a later operation
398 actually does fail.
399
cb6bd80f
JH
400AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
401 return error codes indicating retry. Under TLS1.3 this becomes required.
402
403JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
404 it only wrote the new authenticators, resulting in a lack of tracking of
405 peer changes of ESMTP extensions until the next cache flush.
518b70e9 406
56ac062a
JH
407JH/41 Fix the loop reading a message header line to check for integer overflow,
408 and more-often against header_maxsize. Previously a crafted message could
409 induce a crash of the recive process; now the message is cleanly rejected.
410
ae63862b
MA
411JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
412 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
413
9723f966 414
bb264f6b
JH
415Exim version 4.91
416-----------------
459fca58 417
c39c8870 418GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
JH
419 When redis_servers is set to a list of > 1 element, and the Redis servers
420 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
421 case of MOVED into a DEFER case instead, thus moving the query onto the
422 next server in the list. For a cluster of N elements, all N servers must
423 be defined in redis_servers.
c39c8870 424
0800ef83
GF
425GF/02 Catch and remove uninitialized value warning in exiqsumm
426 Check for existence of @ARGV before looking at $ARGV[0]
427
459fca58
JH
428JH/01 Replace the store_release() internal interface with store_newblock(),
429 which internalises the check required to safely use the old one, plus
430 the allocate and data copy operations duplicated in both (!) of the
431 extant use locations.
432
944e8b37
JH
433JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
434 modifier. This matches the restriction on the commandline.
435
bbfb5dcd
JH
436JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
437 Previously only the last row was returned.
438
a05d3e34
JH
439JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
440 we assumed that tags in the header were well-formed, and parsed the
441 element content after inspecting only the first char of the tag.
442 Assumptions at that stage could crash the receive process on malformed
443 input.
444
ce93c6d8
JH
445JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
446 While running the DKIM ACL we operate on the Permanent memory pool so that
447 variables created with "set" persist to the DATA ACL. Also (at any time)
448 DNS lookups that fail create cache records using the Permanent pool. But
449 expansions release any allocations made on the current pool - so a dnsdb
450 lookup expansion done in the DKIM ACL releases the memory used for the
451 DNS negative-cache, and bad things result. Solution is to switch to the
452 Main pool for expansions.
453 While we're in that code, add checks on the DNS cache during store_reset,
454 active in the testsuite.
455 Problem spotted, and debugging aided, by Wolfgang Breyha.
456
2577f55f
JH
457JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
458 When none of the hosts presented to a transport match an already-open
459 connection, close it and proceed with the list. Previously we would
460 queue the message. Spotted by Lena with Yahoo, probably involving
461 round-robin DNS.
462
5b6f7658
JH
463JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
464 Previously a spurious "250 OK id=" response was appended to the proper
465 failure response.
466
c11d665d
JH
467JH/08 The "support for" informational output now, which built with Content
468 Scanning support, has a line for the malware scanner interfaces compiled
469 in. Interface can be individually included or not at build time.
e5ba8aa7
JH
470
471JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
472 by the template makefile "src/EDITME". The "STREAM" support for an older
473 ClamAV interface method is removed.
c11d665d 474
ba0e37b1
JH
475JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
476 rows affected is given instead).
477
96508de1
JH
478JH/11 The runtime Berkeley DB library version is now additionally output by
479 "exim -d -bV". Previously only the compile-time version was shown.
480
06fdb9f7
JH
481JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
482 SMTP connection. Previously, when one had more receipients than the
483 first, an abortive onward connection was made. Move to full support for
484 multiple onward connections in sequence, handling cutthrough connection
485 for all multi-message initiating connections.
486
f83a760f
JH
487JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
488 routers. Previously, a multi-recipient message would fail to match the
489 onward-connection opened for the first recipient, and cause its closure.
490
f1fed05b
JH
491JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
492 a timeout on read on a GnuTLS initiating connection, resulting in the
493 initiating connection being dropped. This mattered most when the callout
494 was marked defer_ok. Fix to keep the two timeout-detection methods
495 separate.
496
051d5efa
JH
497JH/15 Relax results from ACL control request to enable cutthrough, in
498 unsupported situations, from error to silently (except under debug)
499 ignoring. This covers use with PRDR, frozen messages, queue-only and
500 fake-reject.
501
cf3cd306
HSHR
502HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
503
744976d4
JH
504JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
505 metadata, resulting in a crash in free().
506
aab9a843 507PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 508 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 509 Broken also in d185889f4, with init system revamp.
7be14582 510
83d2a861
JH
511JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
512 Previously we abruptly closed the connection after reading a malware-
513 found indication; now we go on to read the "scan ok" response line,
514 and send a quit.
515
6741531c
JH
516JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
517 ACL. Previously, a crash would result.
518
85e03244
JH
519JH/19 Speed up macro lookups during configuration file read, by skipping non-
520 macro text after a replacement (previously it was only once per line) and
521 by skipping builtin macros when searching for an uppercase lead character.
522
c0635b6d
JH
523JH/20 DANE support moved from Experimental to mainline. The Makefile control
524 for the build is renamed.
525
b808677c
JH
526JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
527 was allocated for every new TLS startup, meaning one per message. Fix
528 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
529
6678c382
JH
530JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
531 reported the original. Fix to report (as far as possible) the ACL
532 result replacing the original.
533
dec766a1
WB
534JH/23 Fix memory leak during multi-message connections using STARTTLS under
535 OpenSSL. Certificate information is loaded for every new TLS startup,
536 and the resources needed to be freed.
537
15ae19f9
JH
538JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
539
e6532c4a
JH
540JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
541 was not propagated.
542
2556b3c6
SA
543JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
544 DATA response info to the (existing) per-recipient response info for
545 the "C=" log element. It can have useful tracking info from the
546 destination system. Patch from Simon Arlott.
547
fc8cd529
JH
548JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
549 length value. Previously this would segfault.
550
71bb51e0
HSHR
551HS/02 Support Avast multiline protoocol, this allows passing flags to
552 newer versions of the scanner.
553
e04bfa34
JH
554JH/28 Ensure that variables possibly set during message acceptance are marked
555 dead before release of memory in the daemon loop. This stops complaints
556 about them when the debug_store option is enabled. Discovered specifically
557 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
558 Do the same for the queue-runner and queue-list loops, for variables set
559 from spool message files. Do the same for the SMTP per-message loop, for
560 certain variables indirectly set in ACL operations.
e04bfa34 561
ecce6d9a
JH
562JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
563 as a multi-recipient message from a mailinglist manager). The coding had
564 an arbitrary cutoff number of characters while checking for more input;
565 enforced by writing a NUL into the buffer. This corrupted long / fast
566 input. The problem was exposed more widely when more pipelineing of SMTP
567 responses was introduced, and one Exim system was feeding another.
568 The symptom is log complaints of SMTP syntax error (NUL chars) on the
569 receiving system, and refused recipients seen by the sending system
570 (propating to people being dropped from mailing lists).
571 Discovered and pinpointed by David Carter.
572
c9cf9ac4
JH
573JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
574 replaced by the ${authresults } expansion.
575
b3b37076
JH
576JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
577
830832c9
HSHR
578HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
579 allows proper process termination in container environments.
580
f64e8b5f
JH
581JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
582 Previously the "final dot" had a newline after it; ensure it is CR,LF.
583
8f0776b5
JH
584JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
585 and "err_perm", deprecated since 4.83 when the RFC-defined words
586 "temperror" and "permerror" were introduced.
587
857eaf37
JH
588JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
589 transport-filters or DKIM-signing. The restriction was lost in the
590 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 591 Extend the restriction to also cover ARC-signing.
857eaf37 592
c85476e9
JH
593JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
594 in defer=pass mode supply a 450 to the initiator. Previously the message
595 would be spooled.
596
405074ad
PP
597PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
598 tls_require_ciphers is used as before.
599
eb445b04
HSHR
600HS/03 Malware Avast: Better match the Avast multiline protocol. Add
601 "pass_unscanned". Only tmpfails from the scanner are written to
602 the paniclog, as they may require admin intervention (permission
603 denied, license issues). Other scanner errors (like decompression
604 bombs) do not cause a paniclog entry.
ad93c40f 605
d342446f
JH
606JH/36 Fix reinitialisation of DKIM logging variable between messages.
607 Previously it was possible to log spurious information in receive log
608 lines.
609
a28050f8
JH
610JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
611 triggered odd behaviour from Outlook Express clients.
612
ddd16464
PP
613PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
614 suffix list.
615
321ef002
JH
616JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
617 since the IETF WG has not yet settled on that versus the original
618 "bare" representation.
619
3203e7ba
JH
620JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
621 Previously the millisecond value corrupted the output.
622 Fix also for syslog_pid=no and log_selector +pid, for which the pid
623 corrupted the output.
624
bbfb5dcd 625
acfc18c3
PP
626Exim version 4.90
627-----------------
628
629JH/01 Rework error string handling in TLS interface so that the caller in
630 more cases is responsible for logging. This permits library-sourced
631 string to be attached to addresses during delivery, and collapses
632 pairs of long lines into single ones.
633
856d1e16
PP
634PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
635 during configuration. Wildcards are allowed and expanded.
636
b9df1829
JH
637JH/02 Rework error string handling in DKIM to pass more info back to callers.
638 This permits better logging.
639
875512a3
JH
640JH/03 Rework the transport continued-connection mechanism: when TLS is active,
641 do not close it down and have the child transport start it up again on
642 the passed-on TCP connection. Instead, proxy the child (and any
643 subsequent ones) for TLS via a unix-domain socket channel. Logging is
644 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 645 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 646
fc3f96af
JH
647JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
648 identical IP addresses on different listening ports. Will also affect
649 "exiwhat" output.
650
98913c8e
BK
651PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
652 add noisy ifdef guards to special-case this sillyness.
653 Patch from Bernd Kuhls.
654
8d909960
JH
655JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
656 than 255 are no longer allowed.
657
7006ee24
JH
658JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
659 Disable the session-cache too, which might reduce our load. Since we
660 currrectly use a new context for every connection, both as server and
661 client, there is no benefit for these.
662 GnuTLS appears to not support tickets server-side by default (we don't
663 call gnutls_session_ticket_enable_server()) but client side is enabled
664 by default on recent versions (3.1.3 +) unless the PFS priority string
665 is used (3.2.4 +).
666
6e411084
PP
667PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
668 <https://reproducible-builds.org/specs/source-date-epoch/>.
669
4c2471ca
JH
670JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
671 the check for any unsuccessful recipients did not notice the limit, and
672 erroneously found still-pending ones.
673
4e910c01
JH
674JH/08 Pipeline CHUNKING command and data together, on kernels that support
675 MSG_MORE. Only in-clear (not on TLS connections).
676
42055a33
JH
677JH/09 Avoid using a temporary file during transport using dkim. Unless a
678 transport-filter is involved we can buffer the headers in memory for
679 creating the signature, and read the spool data file once for the
680 signature and again for transmission.
681
eeb35890
JH
682JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
683 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 684 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 685
b7d3afcf
JH
686JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
687 case where the routing stage had gathered several addresses to send to
688 a host before calling the transport for the first, we previously failed
689 to close down TLS in the old transport process before passing the TCP
690 connection to the new process. The new one sent a STARTTLS command
691 which naturally failed, giving a failed delivery and bloating the retry
692 database. Investigation and fix prototype from Wolfgang Breyha.
693
40525d07
JH
694JH/12 Fix check on SMTP command input synchronisation. Previously there were
695 false-negatives in the check that the sender had not preempted a response
696 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 697 awareness of the SMTP input buffering.
40525d07 698
f33875c3
PP
699PP/04 Add commandline_checks_require_admin option.
700 Exim drops privileges sanely, various checks such as -be aren't a
701 security problem, as long as you trust local users with access to their
702 own account. When invoked by services which pass untrusted data to
703 Exim, this might be an issue. Set this option in main configuration
704 AND make fixes to the calling application, such as using `--` to stop
705 processing options.
706
a5ffa9b4
JH
707JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
708 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
709 responses to those, into a single TLS record each way (this usually means
710 a single packet). As a side issue, smtp_enforce_sync now works on TLS
711 connections.
925ac8e4 712
6600985a
PP
713PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
714 affects you only if you're dancing at the edge of the param size limits.
715 If you are, and this message makes sense to you, then: raise the
716 configured limit or use OpenSSL 1.1. Nothing we can do for older
717 versions.
718
ac4d558b
JH
719JH/14 For the "sock" variant of the malware scanner interface, accept an empty
720 cmdline element to get the documented default one. Previously it was
721 inaccessible.
722
e69636bc
JH
723JH/15 Fix a crash in the smtp transport caused when two hosts in succession
724 are unsuable for non-message-specific reasons - eg. connection timeout,
725 banner-time rejection.
726
a843a57e
JH
727JH/16 Fix logging of delivery remote port, when specified by router, under
728 callout/hold.
729
8e041ae0
PP
730PP/06 Repair manualroute's ability to take options in any order, even if one
731 is the name of a transport.
833c70bc
PP
732 Fixes bug 2140.
733
35a04365
HSHR
734HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
735
4226691b
JH
736JH/17 Change the list-building routines interface to use the expanding-string
737 triplet model, for better allocation and copying behaviour.
738
d185889f
JH
739JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
740 Previously it was constructed the first time a possibly-matching string
741 was met in the configuration file input during startup; now it is done
742 during compilation.
743
0a6c178c
JH
744JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
745 compatible one, to avoid the (poorly documented) possibility of a config
746 file in the working directory redirecting the DB files, possibly correpting
02745400 747 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 748
fae8970d
JH
749JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
750 cache-hot. Previously, although the result was properly cached, the
751 initial verify call returned a defer.
752
ad1a76fe 753JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
754 the main verify for receipient in uncached-mode.
755
ad1a76fe
JH
756JH/22 Retire historical build files to an "unsupported" subdir. These are
757 defined as "ones for which we have no current evidence of testing".
758
135e9496
JH
759JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
760 if present. Previously it was ignored.
761
f2ed27cf
JH
762JH/24 Start using specified-initialisers in C structure init coding. This is
763 a C99 feature (it's 2017, so now considered safe).
764
7eb0e5d2
JH
765JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
766 if was a fixed-sized field and bitmask ops via macros; it is now more
767 extensible.
768
4f9f4be4
769PP/07 GitHub PR 56: Apply MariaDB build fix.
770 Patch provided by Jaroslav Škarvada.
771
dc4de9cc
PP
772PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
773 during Coverity cleanups [4.87 JH/47]
774 Diagnosis and fix provided by Michael Fischer v. Mollard.
775
ea18931d
JH
776JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
777 the right size to place the terminating semicolon on its own folded
778 line, the header hash was calculated to an incorrect value thanks to
779 the (relaxed) space the fold became.
780
0768462d 781HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
782 and confused the parent.
783
848214f7
JH
784JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
785 which could crash as a result. This could lead to undeliverable messages.
786
9e0ed81f
JH
787JH/28 Logging: "next input sent too soon" now shows where input was truncated
788 for log purposes.
789
2540f2f8
JH
790JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
791 matters on fast-turnover and PID-randomising systems, which were getting
792 out-of-order delivery.
793
e5ab0ba9
JH
794JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
795 a possibly-overlapping copy. The symptom was that "Remote host closed
796 connection in response to HELO" was logged instead of the actual 4xx
797 error for the HELO.
798
e99a3a6c
JH
799JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
800 Previously only that bufferd was discarded, resulting in SYMTP command
801 desynchronisation.
802
18067c75
JH
803JH/32 DKIM: when a message has multiple signatures matching an identity given
804 in dkim_verify_signers, run the dkim acl once for each. Previously only
805 one run was done. Bug 2189.
806
72934ba7
JH
807JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
808 "panic the current process" to "deliberately defer". The panic log is
809 still written with the problem list name; the mail and reject logs now
810 get a temp-reject line for the message that was being handled, saying
811 something like "domains check lookup or other defer". The SMTP 451
812 message is still "Temporary local problem".
813
625667b6
JH
814JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
815 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
816 freed. CVE-2017-16943.
817
818HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
819 from SMTP input. Previously it was always done; now only done for DATA
820 and not BDAT commands. CVE-2017-16944.
625667b6 821
d21bf202
JH
822JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
823 to the message (such as an overlong header line). Previously this was
824 not done and we did not exit BDAT mode. Followon from the previous item
825 though a different problem.
826
acfc18c3 827
fd047340 828Exim version 4.89
acfc18c3 829-----------------
4c57a40e 830
9427e879 831JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 832 than -2003 did; needs libidn2 in addition to libidn.
fd047340 833
7b283890
JH
834JH/02 The path option on a pipe transport is now expanded before use.
835
4c57a40e
PP
836PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
837 Patch provided by "Björn", documentation fix added too.
838
5d036699
JH
839JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
840 missing a wire-to-host endian conversion.
841
f4630439
JH
842JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
843 close after a BDAT command line could be taken as a following command,
844 giving a synch failure. Fix by only checking for synch immediately
845 before acknowledging the chunk.
846
f988ce57
JS
847PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
848 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
849 macro. Patches provided by Josh Soref.
850
bd8fbe36
JH
851JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
852 Previously we did not; the RFC seems ambiguous and VRFY is not listed
853 by IANA as a service extension. However, John Klensin suggests that we
854 should.
855
856JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
857 the dkim code may be unix-mode line endings rather than smtp wire-format
858 CRLF, so prepend a CR to any bare LF.
fd047340 859
bd8fbe36 860JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
861 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
862
bd8fbe36
JH
863JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
864 the first were themselves being wrongly included in the feed into dkim
865 processing; with most chunk sizes in use this resulted in an incorrect
866 body hash calculated value.
867
eea19017
JH
868JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
869 DKIM signature block, for verification. Although advised against by
870 standards it is specifically not ruled illegal.
871
44e6651b
JH
872JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
873
874JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
875 missing a body hash (the bh= tag).
876
877JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
878 It seems that HAProxy sends the Proxy Protocol information in clear and
879 only then does a TLS startup, so do the same.
880
881JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
882 TCP connections (such as for Spamd) unless the daemon successfully set
883 Fast Open mode on its listening sockets. This fixes breakage seen on
884 too-old kernels or those not configured for Fast Open, at the cost of
885 requiring both directions being enabled for TFO, and TFO never being used
886 by non-daemon-related Exim processes.
887
888JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
889 endings, at least on the first header line. Try to canonify any that get
890 past that check, despite the cost.
891
b6040544
JH
892JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
893 now limited to an arbitrary five deep, while parsing addresses with the
894 strip_excess_angle_brackets option enabled.
895
f700ea4d
PP
896PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
897 instead leave the unprompted TLS handshake in socket buffer for the
898 TLS library to consume.
899
da88acae
PP
900PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
901
f6ef9370
PP
902PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
903
90341c71
JH
904JH/16 Drop variables when they go out of scope. Memory management drops a whole
905 region in one operation, for speed, and this leaves assigned pointers
906 dangling. Add checks run only under the testsuite which checks all
907 variables at a store-reset and panics on a dangling pointer; add code
908 explicitly nulling out all the variables discovered. Fixes one known
909 bug: a transport crash, where a dangling pointer for $sending_ip_address
910 originally assigned in a verify callout, is re-used.
911
1ec2ab36
PP
912PP/06 Drop '.' from @INC in various Perl scripts.
913
914PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
915
916PP/08 Reduce a number of compilation warnings under clang; building with
917 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
918 should be warning-free.
919
8b2b9480
PP
920JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
921
922HS/01 Fix portability problems introduced by PP/08 for platforms where
923 realloc(NULL) is not equivalent to malloc() [SunOS et al].
924
d953610f
HSHR
925HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
926 chunk. This allows us to accept broken chunked messages. We need a more
927 general solution here.
928
7dc5f827
PP
929PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
930 already-broken messages in the queue.
931
4bb432cb
PP
932JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
933
3b1a84c8
PP
934JH/19 Fix reference counting bug in routing-generated-address tracking.
935
902fbd69 936
8d042305
JH
937Exim version 4.88
938-----------------
4c57a40e 939
9094b84b
JH
940JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
941 supports it and a size is available (ie. the sending peer gave us one).
8d042305 942
03d5892b
JH
943JH/02 The obsolete acl condition "demime" is removed (finally, after ten
944 years of being deprecated). The replacements are the ACLs
945 acl_smtp_mime and acl_not_smtp_mime.
946
4b0fe319
JH
947JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
948 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
949 or even an in-clear connection were permitted. Now, if the host lookup
950 was dnssec and dane was requested then the host is only used if the
951 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
952 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
953 if one fails this test.
954 This means that a poorly-configured remote DNS will make it incommunicado;
955 but it protects against a DNS-interception attack on it.
956
789f8a4f
JH
957JH/04 Bug 1810: make continued-use of an open smtp transport connection
958 non-noisy when a race steals the message being considered.
959
23bb6982 960JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 961 self-signed certificate for inbound TLS connections.
23bb6982 962
0bd1b1ed 963JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 964 in rewrites and routers.
0bd1b1ed 965
20b9a2dc
JH
966JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
967 and logged a warning sing 4.83; now they are a configuration file error.
968
05392bbc
JH
969JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
970 (lacking @domain). Apply the same qualification processing as RCPT.
971
1a6230a3
JH
972JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
973
cfab9d68
JH
974JH/10 Support ${sha256:} applied to a string (as well as the previous
975 certificate).
976
98c82a3d
JH
977JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
978 a cutthrough deliver is pending, as we always want to make a connection.
979 This also avoids re-routing the message when later placing the cutthrough
980 connection after a verify cache hit.
981 Do not update it with the verify result either.
982
983JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
984 when routing results in more than one destination address.
985
ae8386f0
JH
986JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
987 signing (which inhibits the cutthrough capability). Previously only
988 the presence of an option was tested; now an expansion evaluating as
989 empty is permissible (obviously it should depend only on data available
990 when the cutthrough connection is made).
991
0d9fa8c0
JH
992JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
993 the relevant preceding SMTP command did not note the pipelining mode.
994
3581f321
JH
995JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
996 Previously they were not counted.
997
ef3a1a30
JH
998JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
999 as one having no matching records. Previously we deferred the message
1000 that needed the lookup.
1001
4c04137d 1002JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
1003 distinguished as "(=".
1004
1435d4b2
JH
1005JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1006 for missing MX records. Previously it only worked for missing A records.
1007
eea0defe
JB
1008JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1009
1010JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1011 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 1012
4c04137d 1013JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
1014 even for a "none" policy. Patch from Tony Meyer.
1015
1c788856
JH
1016JH/22 Fix continued use of a connection for further deliveries. If a port was
1017 specified by a router, it must also match for the delivery to be
1018 compatible.
1019
e3b1f624
JH
1020JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1021 When one of the recipients of a message was unsuitable for the connection
1022 (has no matching addresses), we lost track of needing to mark it
1023 deferred. As a result mail would be lost.
1024
a57ce043
JH
1025JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1026
f59aaaaa 1027JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
1028 takes up less space and should be simpler to maintain. Merge the ACL
1029 condition decode tables also, with similar effect.
d7bed771 1030
d1f9fb42
JH
1031JH/26 Fix problem with one_time used on a redirect router which returned the
1032 parent address unchanged. A retry would see the parent address marked as
1033 delivered, so not attempt the (identical) child. As a result mail would
1034 be lost.
1035
92b0827a
JH
1036JH/27 Fix a possible security hole, wherein a process operating with the Exim
1037 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1038 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1039 itself :(
1040
ddf1b11a
JH
1041JH/28 Enable {spool,log} filesystem space and inode checks as default.
1042 Main config options check_{log,spool}_{inodes,space} are now
1043 100 inodes, 10MB unless set otherwise in the configuration.
1044
3cc3f762
JH
1045JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1046 Previously it only applied to the main-section connection policy
1047 options.
1048
ae5afa61
JH
1049JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1050
317e40ac
PP
1051PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1052 by me. Added RFC7919 DH primes as an alternative.
1053
8b0fb68e
PP
1054PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1055 are not in the system include path.
1056
ad7fc6eb 1057JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 1058 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
1059 Exim did stdio operations after fclose. This was exposed by a recent
1060 change which nulled out the file handle after the fclose.
ad7fc6eb 1061
ee5b1e28
JH
1062JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1063 signed directly by the cert-signing cert, rather than an intermediate
1064 OCSP-signing cert. This is the model used by LetsEncrypt.
1065
5ddc9771
JH
1066JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1067
8d73599f
JH
1068HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1069 an incoming connection.
1070
446415f5
HSHR
1071HS/02 Bug 1802: Do not half-close the connection after sending a request
1072 to rspamd.
1073
8e53a4fc
HSHR
1074HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1075 fallback to "prime256v1".
8d042305 1076
87cb4a16 1077JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 1078 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
1079
1080
0d9b78be
JH
1081Exim version 4.87
1082-----------------
4c57a40e 1083
82d14d6a
JH
1084JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1085 and 3.4.4 - once the server is enabled to respond to an OCSP request
1086 it does even when not requested, resulting in a stapling non-aware
1087 client dropping the TLS connection.
0d9b78be 1088
6c6d6e48
TF
1089TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1090 support variable-length bit vectors. No functional change.
1091
ac881e27
TF
1092TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1093 The I= interface field on outgoing lines is now after the H= remote
1094 host field, same as incoming lines. There is a separate
1095 outgoing_interface log selector which allows you to disable the
1096 outgoing I= field.
1097
c8899c20
JH
1098JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1099 If not running log_selector +smtp_connection the mainlog would be held
1100 open indefinitely after a "too many connections" event, including to a
1101 deleted file after a log rotate. Leave the per net connection logging
1102 leaving it open for efficiency as that will be quickly detected by the
1103 check on the next write.
1104
f1b81d81
HSHR
1105HS/01 Bug 1671: Fix post transport crash.
1106 Processing the wait-<transport> messages could crash the delivery
1107 process if the message IDs didn't exist for some reason. When
1108 using 'split_spool_directory=yes' the construction of the spool
1109 file name failed already, exposing the same netto behaviour.
1110
f38917cc
JH
1111JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1112 mime_regex ACL conditions.
1113
895fbaf2
JH
1114JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1115 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1116 to HELO, local diagnostic string.
1117
805bb5c3
JH
1118JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1119 log line to debug. Even when configured with a tls authenticator many
1120 client connections are expected to not authenticate in this way, so
1121 an authenticate fail is not an error.
1122
56c2a7be
HSHR
1123HS/02 Add the Exim version string to the process info. This way exiwhat
1124 gives some more detail about the running daemon.
1125
4c04137d 1126JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
1127 matter for fast-change records such as DNSBLs.
1128
6f6dedcc
JH
1129JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1130 retry record, even if constant. There may be multiple transports with
1131 different interface settings and the retry behaviour needs to be kept
1132 distinct.
1133
0f557e90
JH
1134JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1135
1136JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1137
ec0eb1a3
JH
1138JH/10 Bug 840: fix log_defer_output option of pipe transport
1139
41e93589
JH
1140JH/11 Bug 830: use same host for all RCPTS of a message, even under
1141 hosts_randomize. This matters a lot when combined with mua_wrapper.
1142
98b98887 1143JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
1144 ${quote_pgsql:<string>} operator.
1145
98b98887
JH
1146JH/13 Bug 1708: avoid misaligned access in cached lookup.
1147
858e91c2
JH
1148JH/14 Change header file name for freeradius-client. Relevant if compiling
1149 with Radius support; from the Gentoo tree and checked under Fedora.
1150
1151JH/15 Bug 1712: Introduce $prdr_requested flag variable
1152
6ff55e50
JH
1153JH/16 Bug 1714: Permit an empty string as expansion result for transport
1154 option transport_filter, meaning no filtering.
1155
3b957582
JB
1156JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1157
23f3dc67
JH
1158JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1159 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 1160 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
1161 If a server certificate is not supplied (via tls_certificate) an error is
1162 logged, and clients will find TLS connections fail on startup. Presumably
1163 they will retry in-clear.
1164 Packagers of Exim are strongly encouraged to create a server certificate
1165 at installation time.
1166
240c288f
JH
1167HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1168 with the $config_file variable.
1169
5ef5dd52
JB
1170JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1171 in transport context, after the attempt, and per-recipient. The latter type
1172 is per host attempted. The event data is the error message, and the errno
1173 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 1174 and the trailing two digits of the smtp 4xx response.
5ef5dd52 1175
e161710d
GF
1176GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1177 to write to mainlog (or rejectlog, paniclog) in the window between file
1178 creation and permissions/ownership being changed. Particularly affects
1179 installations where exicyclog is run as root, rather than exim user;
1180 result is that the running daemon panics and dies.
1181
a159f203
JH
1182JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1183
7f06582c
JH
1184JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1185 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1186 "pri" and "weight". Note that the previous implicit priority given by the
1187 list order is no longer honoured.
1188
4c04137d 1189JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
1190 for DKIM processing.
1191
f0989ec0
JH
1192JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1193 by defining SUPPORT_SOCKS.
74f150bf 1194
cee5f132
JH
1195JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1196 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
1197 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1198 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 1199
8c5d388a
JH
1200JH/27 Move Internationalisation support from Experimental to mainline, enabled
1201 for a build by defining SUPPORT_I18N
1202
2d8d625b
JH
1203JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1204 of the query string, and make ${quote_redis:} do that quoting.
1205
0cbf2b82
JH
1206JH/29 Move Events support from Experimental to mainline, enabled by default
1207 and removable for a build by defining DISABLE_EVENT.
1208
f2f2c91b
JH
1209JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1210
ce325893
JH
1211JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1212 cached by the daemon.
1213
de78e2d5
JH
1214JH/32 Move Redis support from Experimental to mainline, enabled for a build
1215 by defining LOOKUP_REDIS. The libhiredis library is required.
1216
379ba7d0
JH
1217JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1218 keys are given for lookup.
1219
f444c2c7
JH
1220JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1221 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1222 only supported when built with TLS support. The PolarSSL SHA routines
1223 are still used when the TLS library is too old for convenient support.
f444c2c7 1224
a57b6200
JH
1225JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1226 openssl_options), for security. OpenSSL forces this from version 1.1.0
1227 server-side so match that on older versions.
1228
07c73177 1229JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1230 allocation for $value could be released as the expansion processing
07c73177 1231 concluded, but leaving the global pointer active for it.
fa01e4f8 1232
4f6ae5c3
JH
1233JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1234 and to use the domains and local_parts ACL conditions.
1235
1bc460a6
JH
1236JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1237 incorrectly not doubled on cutthrough transmission, hence seen as a
1238 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1239 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1240 via the normal store-and-forward channel. This could result in duplicates
1241 received - but deduplicating mailstores were liable to retain only the
1242 initial truncated version.
1243
ab9152ff 1244JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1245
67e87fcf
JH
1246JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1247
ab9152ff
JH
1248JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1249 we're in there, support oversigning also; bug 1309.
1250
af483912
JH
1251JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1252
bc3c7bb7 1253HS/04 Add support for keep_environment and add_environment options.
df3def24 1254
13559da6
JH
1255JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1256 either intentional arithmetic overflow during PRNG, or testing config-
1257 induced overflows.
1258
59eaad2b
JH
1259JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1260 delivery resulted in actual delivery. Cancel cutthrough before DATA
1261 stage.
1262
f9334a28
JH
1263JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1264 rejects a recipient: pass the reject to the originator.
1265
dc8091e7
JH
1266JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1267 Many were false-positives and ignorable, but it's worth fixing the
1268 former class.
1269
dfe7d917
JH
1270JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1271 for the new environment-manipulation done at startup. Move the routines
1272 from being local to tls.c to being global via the os.c file.
1273
93cc2d6e
JH
1274JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1275 an extract embedded as result-arg for a map, the first arg for extract
1276 is unavailable so we cannot tell if this is a numbered or keyed
1277 extraction. Accept either.
1278
13559da6 1279
9c695f6d
JH
1280Exim version 4.86
1281-----------------
4c57a40e 1282
9c695f6d
JH
1283JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1284 expanded.
1285
506900af
JH
1286JH/02 The smtp transport option "multi_domain" is now expanded.
1287
ad07e9ad
JH
1288JH/03 The smtp transport now requests PRDR by default, if the server offers
1289 it.
1290
01a4a5c5 1291JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1292 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1293 can be used to disable this per-host. The build option
1294 EXPERIMENTAL_CERTNAMES is withdrawn.
1295
cb1d7830 1296JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1297 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1298 For GnuTLS, only version 3.0.20 or later.
1299
610ff438 1300JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1301 (but not required) by default. The verification status is now logged by
1302 default, for both outbound TLS and client-certificate supplying inbound
1303 TLS connections
610ff438 1304
f926e272
JH
1305JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1306 sites use this now.
1307
50dc7409
JH
1308JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1309 Status Notification (bounce) messages are now MIME format per RFC 3464.
1310 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1311 under the control of the dsn_advertise_hosts option, and routers may
1312 have a dsn_lasthop option.
1313
0f0c8159
JH
1314JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1315 default, modifiable by a malware= option. The list separator for
23763898 1316 the options can now be changed in the usual way. Bug 68.
4e71661f 1317
1ad6489e
JH
1318JH/10 The smtp_receive_timeout main option is now expanded before use.
1319
aeaf5db3
JH
1320JH/11 The incoming_interface log option now also enables logging of the
1321 local interface on delivery outgoing connections.
1322
5032d1cf
JH
1323JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1324 if the interface and destination host and port all match.
1325
7e8360e6
JH
1326JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1327 /defer_ok option.
1328
c5f280e2
AL
1329JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1330 Patch from Andrew Lewis.
1331
fd4d8871 1332JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1333 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1334 modifiers per server. Patch originally by <rommer@active.by>.
1335
1336JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1337 and remote servers. Remote servers can be IPv6 addresses, and
1338 specify a port-range.
fd4d8871 1339
23763898
JH
1340JH/17 Bug 68: The spamd_address main option now supports an optional
1341 timeout value per server.
1342
2ad78978
JH
1343JH/18 Bug 1581: Router and transport options headers_add/remove can
1344 now have the list separator specified.
1345
8a512ed5 1346JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1347 option values.
8a512ed5 1348
82c0c8ea 1349JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1350 under OpenSSL.
1351
cc00f4af
JH
1352JH/21 Support for the A6 type of dns record is withdrawn.
1353
82c0c8ea
JH
1354JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1355 rather than the verbs used.
1356
b980ed83
JH
1357JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1358 from 255 to 1024 chars.
1359
6c9ed72e
JH
1360JH/24 Verification callouts now attempt to use TLS by default.
1361
cfab9d68 1362HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1363 are generic router options now. The defaults didn't change.
50dc7409 1364
f846c8f5
JH
1365JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1366 Original patch from Alexander Shikoff, worked over by JH.
1367
fd4c285c
HSHR
1368HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1369 files if ZCAT_COMMAND is not executable.
1370
4c04137d 1371JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1372
d2a2c69b
JH
1373JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1374
8241d8dd
JH
1375JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1376 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1377 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1378 (and we were inconsistent anyway for A-only vs AAAA+A).
1379
1f12df4d
JH
1380JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1381
1f155f8e
JH
1382JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1383 when evaluating $sender_host_dnssec.
1384
1705dd20
JH
1385JH/31 Check the HELO verification lookup for DNSSEC, adding new
1386 $sender_helo_dnssec variable.
1387
038597d2
PP
1388JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1389
474f71bf
JH
1390JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1391
7137ca4b
JH
1392JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1393
dcb1095c
JH
1394JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1395 documented as working, but never had. Support all but $spam_report.
1396
2f460950
JH
1397JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1398 added for tls authenticator.
1399
2f680c0c
HSHR
1400HS/03 Add perl_taintmode main config option
1401
9c695f6d 1402
e449c3b0
TL
1403Exim version 4.85
1404-----------------
4c57a40e 1405
e449c3b0
TL
1406TL/01 When running the test suite, the README says that variables such as
1407 no_msglog_check are global and can be placed anywhere in a specific
1408 test's script, however it was observed that placement needed to be near
1409 the beginning for it to behave that way. Changed the runtest perl
1410 script to read through the entire script once to detect and set these
1411 variables, reset to the beginning of the script, and then run through
1412 the script parsing/test process like normal.
1413
ac20058f
TL
1414TL/02 The BSD's have an arc4random API. One of the functions to induce
1415 adding randomness was arc4random_stir(), but it has been removed in
1416 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1417 function when detected.
1418
a9b8ec8b
JH
1419JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1420 cause callback expansion.
1421
6286d7c4
TL
1422TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1423 syntax errors in an expansion can be treated as a string instead of
1424 logging or causing an error, due to the internal use of bool_lax
1425 instead of bool when processing it.
1426
0f06b4f2 1427JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1428 server certificates when making smtp deliveries.
1429
be36e572
JH
1430JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1431
ac4ef9bd
JH
1432JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1433
0eb51736
TL
1434TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1435
c713ca4b
TL
1436TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1437 Merged patch from Sebastian Wiedenroth.
e449c3b0 1438
bd21a787
WB
1439JH/05 Fix results-pipe from transport process. Several recipients, combined
1440 with certificate use, exposed issues where response data items split
1441 over buffer boundaries were not parsed properly. This eventually
1442 resulted in duplicates being sent. This issue only became common enough
4c04137d 1443 to notice due to the introduction of connection certificate information,
bd21a787
WB
1444 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1445
8bc732e8
JH
1446JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1447 size buffer was used, resulting in syntax errors when an expansion
1448 exceeded it.
1449
a7fec7a7
JH
1450JH/07 Add support for directories of certificates when compiled with a GnuTLS
1451 version 3.3.6 or later.
1452
4c04137d 1453JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1454 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1455 both become "event_action", the variables become $event_name, $event_data
aec45841 1456 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1457 routers, transports and related events. The tls:cert event is now also
1458 raised for inbound connections, if the main configuration event_action
1459 option is defined.
774ef2d7 1460
eca4debb
TL
1461TL/06 In test suite, disable OCSP for old versions of openssl which contained
1462 early OCSP support, but no stapling (appears to be less than 1.0.0).
1463
8d692470
JH
1464JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1465 server certificate names available under the smtp transport option
1466 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1467 matches.
1468
e9477a08
JH
1469JH/10 Time-related extraction expansions from certificates now use the main
1470 option "timezone" setting for output formatting, and are consistent
1471 between OpenSSL and GnuTLS compilations. Bug 1541.
1472
ad4c5ff9
JH
1473JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1474 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1475
1476JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1477 include certificate info, eximon was claiming there were spoolfile
1478 syntax errors.
1479
3394b36a 1480JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1481
1482JH/14 Log delivery-related information more consistently, using the sequence
1483 "H=<name> [<ip>]" wherever possible.
1484
3394b36a
TL
1485TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1486 are problematic for Debian distribution, omit them from the release
1487 tarball.
1488
ad4c5ff9
JH
1489JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1490
4c04137d 1491JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1492 Bug 1561.
1493
1494JH/17 Fix a null-indirection in certextract expansions when a nondefault
1495 output list separator was used.
1496
8bc732e8 1497
1f0ebb98
TL
1498Exim version 4.84
1499-----------------
09728d20
TL
1500TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1501 checkers that were complaining about end of non-void function with no
1502 return.
1f0ebb98 1503
a612424f 1504JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1505 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1506
1507JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1508
1509TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1510 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1511
1f0ebb98 1512
c0e56233
TF
1513Exim version 4.83
1514-----------------
1515
1516TF/01 Correctly close the server side of TLS when forking for delivery.
1517
1518 When a message was received over SMTP with TLS, Exim failed to clear up
1519 the incoming connection properly after forking off the child process to
1520 deliver the message. In some situations the subsequent outgoing
1521 delivery connection happened to have the same fd number as the incoming
1522 connection previously had. Exim would try to use TLS and fail, logging
1523 a "Bad file descriptor" error.
1524
7245734e
TF
1525TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1526 utilities have not been installed.
1527
fd5dad68
JH
1528JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1529 temporary space as the ACL may create new global variables.
1530
5428a946
TL
1531TL/01 LDAP support uses per connection or global context settings, depending
1532 upon the detected version of the libraries at build time.
1533
a3c86431
TL
1534TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1535 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1536 were a direct connection from the outside internet. PPv2 support was
1537 updated based on HAProxy spec change in May 2014.
a3c86431 1538
aa26e137
JH
1539JH/02 Add ${listextract {number}{list}{success}{fail}}.
1540
5a1b8443
WB
1541TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1542 Properly escape header and check for NULL return.
1543
72c9e342
PP
1544PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1545 not dns_use_dnssec.
1546
76f44207
WB
1547JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1548
770747fd
MFM
1549TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1550 characters in header names, implemented as a verify condition.
1551 Contributed by Michael Fischer v. Mollard.
1552
8ddef691 1553TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1554 results permerror and temperror. Previous values are deprecated but
1555 still accepted. In a future release, err_perm and err_temp will be
1556 completely removed, which will be a backward incompatibility if the
1557 ACL tests for either of these two old results. Patch contributed by
8ddef691 1558 user bes-internal on the mailing list.
c0e56233 1559
b9c2e32f
AR
1560JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1561
e45a1c37
JH
1562JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1563 selectors, in both main and reject logs.
1564
67d81c10
JH
1565JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1566 failed delivery.
1567
b1f8e4f8
JH
1568JH/07 Add malware type "sock" for talking to simple daemon.
1569
511a6c14 1570JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1571
1572JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1573 routers/transports under cutthrough routing.
214042d2 1574
51c7471d
JH
1575JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1576 numbers. Touch up "bool" conditional to keep the same definition.
1577
3695be34
TL
1578TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1579
1e06383a
TL
1580JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1581
76146973
JH
1582JH/12 Expand items in router/transport headers_add or headers_remove lists
1583 individually rather than the list as a whole. Bug 1452.
1584
1585 Required for reasonable handling of multiple headers_ options when
1586 they may be empty; requires that headers_remove items with embedded
1587 colons must have them doubled (or the list-separator changed).
1588
8c8b8274
TL
1589TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1590 view the policy declared in the DMARC record. Currently, $dmarc_status
1591 is a combined value of both the record presence and the result of the
1592 analysis.
b1f8e4f8 1593
35aba663
JH
1594JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1595
8c51eead 1596JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1597 dnslookup router and the smtp transport (applying to the forward
1598 lookup).
8c51eead 1599
deae092e
HS
1600TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1601 of ldap servers used for a specific lookup. Patch provided by Heiko
1602 Schlichting.
35aba663 1603
fd3b6a4a 1604JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1605 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1606
8d91c6dc
LT
1607TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1608 Patch submitted by Lars Timman.
1609
2b4a568d
JH
1610JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1611
d2af03f4
HS
1612TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1613 Requires trusted mode and valid format message id, aborts otherwise.
1614 Patch contributed by Heiko Schlichting.
1615
9d1c15ef
JH
1616JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1617 certextract with support for various fields. Bug 1358.
1618
44662487
JH
1619JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1620 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1621 hosts_request_ocsp.
1622
ed3bba5f 1623JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1624 operate on certificate variables to give certificate fingerprints
9ef9101c 1625 Also new ${sha256:cert_variable}.
44662487 1626
8ccd00b1
JH
1627JH/23 The PRDR feature is moved from being Experimental into the mainline.
1628
8ded8589
TL
1629TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1630 Christian Aistleitner.
1631
f2de3a33
JH
1632JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1633
6eb02f88
TL
1634TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1635 file. Patch from Wolfgang Breyha.
1636
00bff6f6
JH
1637JH/25 Expand the coverage of the delivery $host and $host_address to
1638 client authenticators run in verify callout. Bug 1476.
1639
071c51f7
JH
1640JH/26 Port service names are now accepted for tls_on_connect_ports, to
1641 align with daemon_smtp_ports. Bug 72.
1642
a6d4c44e
TF
1643TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1644 support and error reporting did not work properly.
1645
3ae173e7
ACK
1646TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1647 and is readable. Patch from Andrew Colin Kissa.
1648
c13d09b8
TL
1649TL/14 Enhance documentation of ${run expansion and how it parses the
1650 commandline after expansion, particularly in the case when an
1651 unquoted variable expansion results in an empty value.
1652
0df4ab80
JH
1653JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1654
66be95e0
PP
1655PP/02 Fix internal collision of T_APL on systems which support RFC3123
1656 by renaming away from it. Addresses GH issue 15, reported by
1657 Jasper Wallace.
1658
1bd0d12b
JH
1659JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1660
0de7239e
TL
1661TL/15 SECURITY: prevent double expansion in math comparison functions
1662 (can expand unsanitized data). Not remotely exploitable.
1663 CVE-2014-2972
1664
fd3b6a4a 1665
2c422e6f 1666Exim version 4.82
98a90c36
PP
1667-----------------
1668
1669PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1670
12f69989
PP
1671PP/02 Make -n do something, by making it not do something.
1672 When combined with -bP, the name of an option is not output.
1673
54c90be1
PP
1674PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1675 by GnuTLS.
1676
1f4a55da
PP
1677PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1678 $sender_host_name and config options to manage this, and basic check
1679 routines.
1680
13363eba 1681PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1682
66645890 1683PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1684 (Only plugin which currently uses this is kerberos4, which nobody should
1685 be using, but we should make it available and other future plugins might
1686 conceivably use it, even though it would break NAT; stuff *should* be
1687 using channel bindings instead).
66645890 1688
a3fb9793 1689PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1690 name; added for Sendmail compatibility; requires admin caller.
1691 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1692 just ignore it); requires trusted caller.
a3fb9793 1693 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1694 Bugzilla 1117.
a3fb9793 1695
d27f98fe 1696TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1697
6822b909
TL
1698TL/02 Add +smtp_confirmation as a default logging option.
1699
e7568d51
TL
1700TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1701 Patch by Magnus Holmgren from 2007-02-20.
1702
ae0e32ee 1703TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1704 Bugzilla 1283 - Spec typo.
97f42f10 1705 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1706
1707TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1708
e2658fff
TL
1709TL/06 Add Experimental DMARC support using libopendmarc libraries.
1710
83712b39
TL
1711TL/07 Fix an out of order global option causing a segfault. Reported to dev
1712 mailing list by by Dmitry Isaikin.
1713
976b7e9f
JH
1714JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1715
be4a1376
JH
1716JH/02 Support "G" suffix to numbers in ${if comparisons.
1717
ec4b68e5
PP
1718PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1719
d7148a07
NM
1720NM/01 Bugzilla 1197 - Spec typo
1721 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1722
585121e2 1723JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1724
2519e60d
TL
1725PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1726 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1727 function.
a5f239e4 1728
13d08c90
PP
1729PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1730 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1731
bef3ea7f
JH
1732JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1733 "acl {{name}{arg}...}", and optional args on acl condition
1734 "acl = name arg..."
a5f239e4 1735
846726c5
JH
1736JH/05 Permit multiple router/transport headers_add/remove lines.
1737
3a796370
JH
1738JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1739
ea722490 1740JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1741 Performance patch from Paul Fisher. Bugzilla 1262.
1742
b1b05573
JH
1743JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1744 Bugzilla 884.
1745
362145b5
JH
1746JH/09 Add $headers_added variable, with content from use of ACL modifier
1747 add_header (but not yet added to the message). Bugzilla 199.
1748
3c0a92dc
JH
1749JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1750 Pulled from Bugzilla 817 by Wolfgang Breyha.
1751
6d7c6175
PP
1752PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1753 CVE-2012-5671
e78e6ecf 1754 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1755
6f123593
JH
1756JH/11 Add A= logging on delivery lines, and a client_set_id option on
1757 authenticators.
1758
c8e2fc1e
JH
1759JH/12 Add optional authenticated_sender logging to A= and a log_selector
1760 for control.
1761
005ac57f
PP
1762PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1763
3f1df0e3
PP
1764PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1765 advertise SMTP AUTH mechanism to us, instead of a generic
1766 protocol violation error. Also, make Exim more robust to bad
1767 data from the Dovecot auth socket.
1768
67bd1ab3
TF
1769TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1770
1771 When a queue runner is handling a message, Exim first routes the
1772 recipient addresses, during which it prunes them based on the retry
1773 hints database. After that it attempts to deliver the message to
1774 any remaining recipients. It then updates the hints database using
1775 the retry rules.
1776
1777 So if a recipient address works intermittently, it can get repeatedly
1778 deferred at routing time. The retry hints record remains fresh so the
1779 address never reaches the final cutoff time.
1780
1781 This is a fairly common occurrence when a user is bumping up against
1782 their storage quota. Exim had some logic in its local delivery code
1783 to deal with this. However it did not apply to per-recipient defers
1784 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1785
1ddeb334
TF
1786 This change adds a proper retry rule check during routing so that the
1787 final cutoff time is checked against the message's age. We only do
1788 this check if there is an address retry record and there is not a
1789 domain retry record; this implies that previous attempts to handle
1790 the address had the retry_use_local_parts option turned on. We use
1791 this as an approximation for the destination being like a local
1792 delivery, as in LMTP.
67bd1ab3
TF
1793
1794 I suspect this new check makes the old local delivery cutoff check
1795 redundant, but I have not verified this so I left the code in place.
1796
326cdc37
TF
1797TF/02 Correct gecos expansion when From: is a prefix of the username.
1798
1799 Test 0254 submits a message to Exim with the header
1800
1801 Resent-From: f
1802
1803 When I ran the test suite under the user fanf2, Exim expanded
1804 the header to contain my full name, whereas it should have added
1805 a Resent-Sender: header. It erroneously treats any prefix of the
1806 username as equal to the username.
1807
1808 This change corrects that bug.
1809
f62514b3
GF
1810GF/01 DCC debug and logging tidyup
1811 Error conditions log to paniclog rather than rejectlog.
1812 Debug lines prefixed by "DCC: " to remove any ambiguity.
1813
eb505532
TF
1814TF/03 Avoid unnecessary rebuilds of lookup-related code.
1815
14c7b357
PP
1816PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1817 Bug spotted by Jeremy Harris; was flawed since initial commit.
1818 Would have resulted in OCSP responses post-SNI triggering an Exim
1819 NULL dereference and crash.
1820
94eaf700
PP
1821JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1822
6f5a440a
PP
1823PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1824 Bug detection, analysis and fix by Samuel Thibault.
1825 Bugzilla 1331, Debian bug #698092.
1826
514ee161
SC
1827SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1828
fd98a5c6
JH
1829JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1830 Server implementation by Todd Lyons, client by JH.
1831 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1832 config variable "prdr_enable" controls whether the server
1833 advertises the facility. If the client requests PRDR a new
1834 acl_data_smtp_prdr ACL is called once for each recipient, after
1835 the body content is received and before the acl_smtp_data ACL.
4c04137d 1836 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
1837 on the smtp transport, and the server advertisement.
1838 Default client logging of deliveries and rejections involving
1839 PRDR are flagged with the string "PRDR".
1840
035c7f1e
PP
1841PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1842 fclose(). Diagnosis by Todd Lyons.
1843
ff284120
PP
1844PP/17 Update configure.default to handle IPv6 localhost better.
1845 Patch by Alain Williams (plus minor tweaks).
1846 Bugzilla 880.
1847
26e72755
PP
1848PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1849 This is now consistent with GnuTLS, and is now documented: the
1850 previous undocumented portable approach to treating the option as
1851 unset was to force an expansion failure. That still works, and
1852 an empty string is now equivalent.
1853
0fbd9bff
PP
1854PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1855 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1856 not performing validation itself.
1857
700d22f3
PP
1858PP/20 Added force_command boolean option to pipe transport.
1859 Patch from Nick Koston, of cPanel Inc.
1860
fcc8e047
JH
1861JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1862 Bugzilla 321, 823.
1863
4c04137d 1864TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 1865
8c020188
PP
1866PP/21 Fix eximon continuous updating with timestamped log-files.
1867 Broken in a format-string cleanup in 4.80, missed when I repaired the
1868 other false fix of the same issue.
1869 Report and fix from Heiko Schlichting.
1870 Bugzilla 1363.
1871
d13cdd30
PP
1872PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1873 Report from Prashanth Katuri.
1874
e2fbf4a2
PP
1875PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1876 It's SecureTransport, so affects any MacOS clients which use the
1877 system-integrated TLS libraries, including email clients.
1878
f4c1088b
PP
1879PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1880 using a MIME ACL for non-SMTP local injection.
1881 Report and assistance in diagnosis by Warren Baker.
1882
c5c2182f
PP
1883TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1884
73431ca9
JH
1885JH/16 Fix comparisons for 64b. Bugzilla 1385.
1886
2d07a215
TL
1887TL/09 Add expansion variable $authenticated_fail_id to keep track of
1888 last id that failed so it may be referenced in subsequent ACL's.
1889
a30a8861
TL
1890TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1891 Alexander Miroch.
1892
33382dd9
TL
1893TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1894 ldap library initialization, allowing self-signed CA's to be
1895 used. Also properly sets require_cert option later in code by
1896 using NULL (global ldap config) instead of ldap handle (per
1897 session). Bug diagnosis and testing by alxgomz.
6d7c6175 1898
046172e6
TL
1899TL/12 Enhanced documentation in the ratelimit.pl script provided in
1900 the src/util/ subdirectory.
1901
581d7bee 1902TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 1903 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
1904 EXPERIMENTAL_TPDA.
1905
1906TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1907 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1908 redis_servers = needs to be configured which will be used by the redis
1909 lookup. Patch from Warren Baker, of The Packet Hub.
1910
237b2cf2
TL
1911TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1912
9fc5a352
TL
1913TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1914 hostname or reverse DNS when processing a host list. Used suggestions
1915 from multiple comments on this bug.
1a7b746d 1916
b10e4ec2
TL
1917TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1918
e2cebd74
TL
1919TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1920 Missed a few lines, added it to make the runtest require no keyboard
1921 interaction.
1922
1923TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1924 contains upper case chars. Make router use caseful_local_part.
1925
2519e60d
TL
1926TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1927 support when GnuTLS has been built with p11-kit.
1928
e78e6ecf 1929
4263f395
PP
1930Exim version 4.80.1
1931-------------------
1932
1933PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1934 CVE-2012-5671
2c422e6f 1935 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 1936
ea722490 1937
b1770b6e 1938Exim version 4.80
0599f9cf
PP
1939-----------------
1940
1941PP/01 Handle short writes when writing local log-files.
1942 In practice, only affects FreeBSD (8 onwards).
1943 Bugzilla 1053, with thanks to Dmitry Isaikin.
1944
23c7e742
NM
1945NM/01 Bugzilla 949 - Documentation tweak
1946
b322aac8
NM
1947NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1948 improved.
1949
4a891427
NM
1950NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1951
c1e794ba 1952PP/02 Implemented gsasl authenticator.
b322aac8 1953
97753960
PP
1954PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1955
1956PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1957 `pkg-config foo` for cflags/libs.
1958
df6303fa
PP
1959PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1960 with rest of GSASL and with heimdal_gssapi.
1961
7e6a8985
PP
1962PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1963 `pkg-config foo` for cflags/libs for the TLS implementation.
1964
f1e05cc7 1965PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
1966 properties get this fed in as external SSF. A number of robustness
1967 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 1968
4c287009
PP
1969PP/08 cyrus_sasl server now expands the server_realm option.
1970
b98bb9ac
PP
1971PP/09 Bugzilla 1214 - Log authentication information in reject log.
1972 Patch by Jeremy Harris.
1973
4a6a987a
PP
1974PP/10 Added dbmjz lookup type.
1975
c45dd180 1976PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 1977
7db8d074
PP
1978PP/12 MAIL args handles TAB as well as SP, for better interop with
1979 non-compliant senders.
1980 Analysis and variant patch by Todd Lyons.
1981
eae0036b 1982NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 1983 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
1984 Patch from Dirk Mueller <dmueller@suse.com>
1985
dec5017e
PP
1986PP/13 tls_peerdn now print-escaped for spool files.
1987 Observed some $tls_peerdn in wild which contained \n, which resulted
1988 in spool file corruption.
1989
c80c5570
PP
1990PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1991 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1992 or write after TLS renegotiation, which otherwise led to messages
1993 "Got SSL error 2".
1994
076b11e2
PP
1995TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1996 as a tracking header (ie: a signed header comes before the signature).
1997 Patch from Wolfgang Breyha.
1998
5407bfff
JH
1999JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2000 comma-sep list; embedded commas doubled.
2001
9e45c72b
PP
2002JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2003
e74376d8
PP
2004PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2005 diagnostics.
2006 Report and patch from Dmitry Banschikov.
2007
4c04137d 2008PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
2009 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2010 failures. We appear to now support TLS1.1+ with Exim.
2011
7be682ca
PP
2012PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2013 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
2014 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2015 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 2016
ef840681
PP
2017PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2018 NULL dereference. Report and patch from Alun Jones.
2019
5bfb4cdf
PP
2020PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2021 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2022 Not seeing resolver debug output on NetBSD, but suspect this is a
2023 resolver implementation change.
2024
c6e95d22
PP
2025PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2026 Left warnings. Added "eximon gdb" invocation mode.
2027
9cbad13b
PP
2028PP/21 Defaulting "accept_8bitmime" to true, not false.
2029
9ee44efb
PP
2030PP/22 Added -bw for inetd wait mode support.
2031
6a6084f8
PP
2032PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2033 locate the relevant includes and libraries. Made this the default.
2034
12dd53c7
PP
2035PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2036 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2037
9e45c72b 2038JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
2039 This may cause build issues on older platforms.
2040
17c76198
PP
2041PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2042 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2043 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2044 Added SNI support via GnuTLS too.
af3498d6 2045 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 2046
53947857 2047PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 2048
eae0036b 2049PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
2050 Applied second patch from Janne, implementing suggestion to default
2051 multiple-strings-in-record handling to match SPF spec.
eae0036b 2052
9e45c72b 2053JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 2054
7390e768
PP
2055PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2056 read-only, out of scope).
2057 Patch from Wolfgang Breyha, report from Stuart Northfield.
2058
08488c86
PP
2059PP/29 Fix three issues highlighted by clang analyser static analysis.
2060 Only crash-plausible issue would require the Cambridge-specific
2061 iplookup router and a misconfiguration.
2062 Report from Marcin Mirosław.
2063
6475bd82
PP
2064PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2065
81f91683
PP
2066PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2067 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2068 As part of this, removing so much warning spew let me fix some minor
2069 real issues in debug logging.
2070
5779e6aa
PP
2071PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2072 assignment on my part. Fixed.
2073
3375e053
PP
2074PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2075 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2076 Janne Snabb (who went above and beyond: thank you).
2077
2078PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2079 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
2080 relatively easy to get wrong. Should also expose TLS library linkage
2081 problems.
3375e053 2082
9d26b8c0
PP
2083PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2084 64-bit ${eval} (JH/03).
2085
57eb9e91 2086PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
2087 GNU libc to support some of the 64-bit stuff, should not lead to
2088 conflicts. Defined before os.h is pulled in, so if a given platform
2089 needs to override this, it can.
2090
16880d1a
PP
2091PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2092 protection layer was required, which is not implemented.
2093 Bugzilla 1254, patch from Wolfgang Breyha.
2094
a799883d
PP
2095PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2096 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2097 tls_dhparam take prime identifiers. Also unbreak combination of
2098 OpenSSL+DH_params+TLSSNI.
2099
3ecab157 2100PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 2101
0599f9cf 2102
867fcbf5
PP
2103Exim version 4.77
2104-----------------
2105
2106PP/01 Solaris build fix for Oracle's LDAP libraries.
2107 Bugzilla 1109, patch from Stephen Usher.
2108
f1a29782
TF
2109TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2110
ab42bd23
TK
2111TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2112 whitespace trailer
867fcbf5 2113
0ca0cf52
TF
2114TF/02 Fix a couple more cases where we did not log the error message
2115 when unlink() failed. See also change 4.74-TF/03.
2116
921b12ca
TF
2117TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2118 lock up or crash if it happened to be inside a call to libc when it
2119 got a SIGUSR1 from exiwhat.
2120
2121 The SIGUSR1 handler appends the current process status to the process
2122 log which is later printed by exiwhat. It used to use the general
2123 purpose logging code to do this, but several functions it calls are
2124 not safe for signals.
2125
2126 The new output code in the SIGUSR1 handler is specific to the process
2127 log, and simple enough that it's easy to inspect for signal safety.
2128 Removing some special cases also simplifies the general logging code.
2129 Removing the spurious timestamps from the process log simplifies
2130 exiwhat.
2131
c99ce5c9
TF
2132TF/04 Improved ratelimit ACL condition.
2133
2134 The /noupdate option has been deprecated in favour of /readonly which
2135 has clearer semantics. The /leaky, /strict, and /readonly update modes
2136 are mutually exclusive. The update mode is no longer included in the
2137 database key; it just determines when the database is updated. (This
4c04137d 2138 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
2139
2140 Exim now checks that the per_* options are used with an update mode that
2141 makes sense for the current ACL. For example, when Exim is processing a
2142 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2143 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2144 must specify per_mail/readonly. If you omit the update mode it defaults to
2145 /leaky where that makes sense (as before) or /readonly where required.
2146
2147 The /noupdate option is now undocumented but still supported for
2148 backwards compatibility. It is equivalent to /readonly except that in
2149 ACLs where /readonly is required you may specify /leaky/noupdate or
2150 /strict/noupdate which are treated the same as /readonly.
2151
2152 A useful new feature is the /count= option. This is a generalization
2153 of the per_byte option, so that you can measure the throughput of other
2154 aggregate values. For example, the per_byte option is now equivalent
2155 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2156
2157 The per_rcpt option has been generalized using the /count= mechanism
2158 (though it's more complicated than the per_byte equivalence). When it is
2159 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2160 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2161 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2162 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2163 Note that using per_rcpt with a non-readonly update mode in more than
2164 one ACL will cause the recipients to be double-counted. (The per_mail
2165 and per_byte options don't have this problem.)
2166
2167 The handling of very low rates has changed slightly. If the computed rate
2168 is less than the event's count (usually one) then this event is the first
2169 after a long gap. In this case the rate is set to the same as this event's
2170 count, so that the first message of a spam run is counted properly.
2171
2172 The major new feature is a mechanism for counting the rate of unique
2173 events. The new per_addr option counts the number of different
2174 recipients that someone has sent messages to in the last time period. It
2175 behaves like per_rcpt if all the recipient addresses are different, but
2176 duplicate recipient addresses do not increase the measured rate. Like
2177 the /count= option this is a general mechanism, so the per_addr option
2178 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2179 example, measure the rate that a client uses different sender addresses
2180 with the options per_mail/unique=$sender_address. There are further
2181 details in the main documentation.
2182
3634fc25
TF
2183TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2184
792e8a19
TF
2185TF/06 Removed a few PCRE remnants.
2186
5901f0ab
TF
2187TF/07 Automatically extract Exim's version number from tags in the git
2188 repository when doing development or release builds.
2189
7f2a2a43
PP
2190PP/02 Raise smtp_cmd_buffer_size to 16kB.
2191 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 2192
061b7ebd
PP
2193PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2194 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2195 Bugzilla 97.
2196
e12f8c32
PP
2197PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2198
9e949f00 2199PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
2200 Bugzilla 1078. Patch from John Horne.
2201
2202PP/06 Stop make process more reliably on build failure.
2203 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 2204
555ae6af 2205PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
2206 Bugzilla 1089. Patch from Heiko Schlittermann.
2207
2208PP/08 Handle ${run} returning more data than OS pipe buffer size.
2209 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 2210
6f7fe114
PP
2211PP/09 Handle IPv6 addresses with SPF.
2212 Bugzilla 860. Patch from Wolfgang Breyha.
2213
c566dd90
PP
2214PP/10 GnuTLS: support TLS 1.2 & 1.1.
2215 Bugzilla 1156.
89f897c3
PP
2216 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2217 Bugzilla 1095.
c566dd90 2218
d6cc7c78 2219PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2220 New compile-time build option, EXPAND_LISTMATCH_RHS.
2221 New expansion conditions, "inlist", "inlisti".
2222
0d0e4455
PP
2223PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2224
3399bb60 2225PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2226
2227PP/14 fix log_write() format string regression from TF/03.
2228 Bugzilla 1152. Patch from Dmitry Isaikin.
2229
0ca0cf52 2230
10906672
PP
2231Exim version 4.76
2232-----------------
2233
2234PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2235
754a0503
PP
2236PP/02 Harmonised TLS library version reporting; only show if debugging.
2237 Layout now matches that introduced for other libraries in 4.74 PP/03.
2238
c0c7b2da
PP
2239PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2240
e97d1f08
PP
2241PP/04 New "dns_use_edns0" global option.
2242
084c1d8c
PP
2243PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2244 Bugzilla 1098.
2245
4e7ee012
PP
2246PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2247 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2248
c8d52a00
PP
2249TK/01 Updated PolarSSL code to 0.14.2.
2250 Bugzilla 1097. Patch from Andreas Metzler.
2251
54e7ce4a
PP
2252PP/07 Catch divide-by-zero in ${eval:...}.
2253 Fixes bugzilla 1102.
2254
5ee6f336
PP
2255PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2256 Bugzilla 1104.
2257
c8d52a00 2258TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2259 format-string attack -- SECURITY: remote arbitrary code execution.
2260
2261TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2262 time unintentionally subject to list matching rules, letting the header
2263 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2264 arbitrary string expansion). This allowed for information disclosure.
2265
2266PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2267 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2268
10906672 2269
aa097c4c
NM
2270Exim version 4.75
2271-----------------
2272
4c04137d 2273NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2274 Bugzilla 1073
2275
7f3d9eff
TF
2276TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2277 This fixes portability to compilers other than gcc, notably
2278 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2279
159f52d2
TF
2280TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2281 makefiles for portability to HP-UX and POSIX correctness.
2282
0cc9542a
PP
2283PP/01 Permit LOOKUP_foo enabling on the make command-line.
2284 Also via indented variable definition in the Makefile.
2285 (Debugging by Oliver Heesakkers).
2286
f7274286
PP
2287PP/02 Restore caching of spamd results with expanded spamd_address.
2288 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2289
7b797365
PP
2290PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2291 Improves build reliability. Fix from: Frank Elsner
2292
caacae52
NM
2293NM/02 Fix wide character breakage in the rfc2047 coding
2294 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2295
09dcaba9
NM
2296NM/03 Allow underscore in dnslist lookups
2297 Fixes bug 1026. Patch from Graeme Fowler
2298
bc19a55b
PP
2299PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2300 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2301
bd4c9759
NM
2302NM/04 Fixed exiqgrep to cope with mailq missing size issue
2303 Fixes bug 943.
2304
b72aab72
PP
2305PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2306 is logged, to avoid truncation. Patch from John Horne.
2307
2fe76745
PP
2308PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2309 Patch from Jakob Hirsch.
2310
76aa570c
PP
2311PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2312 SQL string expansion failure details.
2313 Patch from Andrey Oktyabrski.
2314
f1e5fef5
PP
2315PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2316 Patch from Simon Arlott.
2317
4d805ee9
PP
2318PP/09 New lookups functionality failed to compile on old gcc which rejects
2319 extern declarations in function scope.
2320 Patch from Oliver Fleischmann
2321
cd59ab18
PP
2322PP/10 Use sig_atomic_t for flags set from signal handlers.
2323 Check getgroups() return and improve debugging.
2324 Fixed developed for diagnosis in bug 927 (which turned out to be
2325 a kernel bug).
2326
332f5cf3
PP
2327PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2328 Patch from Mark Zealey.
2329
29cfeb94
PP
2330PP/12 Bugzilla 1056: Improved spamd server selection.
2331 Patch from Mark Zealey.
2332
660242ad
PP
2333PP/13 Bugzilla 1086: Deal with maildir quota file races.
2334 Based on patch from Heiko Schlittermann.
2335
bc4bc4c5
PP
2336PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2337 Patch from Uwe Doering, sign-off by Michael Haardt.
2338
2e64baa9
NM
2339NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2340 variable declaration deep within a block. Bug and patch from
2341 Dennis Davis.
2342
4c04137d 2343PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2344
6bac1a9a
PP
2345PP/16 Make DISABLE_DKIM build knob functional.
2346
552193f0
NM
2347NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2348 Patch by Simon Arlott
baeee2c1 2349
1b587e48
TF
2350TF/03 Fix valgrind.h portability to C89 compilers that do not support
2351 variable argument macros. Our copy now differs from upstream.
2352
aa097c4c 2353
8c07b69f
TF
2354Exim version 4.74
2355-----------------
2356
2357TF/01 Failure to get a lock on a hints database can have serious
2358 consequences so log it to the panic log.
2359
c0ea85ab
TF
2360TF/02 Log LMTP confirmation messages in the same way as SMTP,
2361 controlled using the smtp_confirmation log selector.
2362
0761d44e
TF
2363TF/03 Include the error message when we fail to unlink a spool file.
2364
0a349494
PP
2365DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2366 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2367 for maintaining out-of-tree patches for some time.
2368
2369PP/01 Bugzilla 139: Documentation and portability issues.
2370 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2371 Handle per-OS dynamic-module compilation flags.
2372
fea24b2e
PP
2373PP/02 Let /dev/null have normal permissions.
2374 The 4.73 fixes were a little too stringent and complained about the
2375 permissions on /dev/null. Exempt it from some checks.
2376 Reported by Andreas M. Kirchwitz.
2377
6545de78
PP
2378PP/03 Report version information for many libraries, including
2379 Exim version information for dynamically loaded libraries. Created
2380 version.h, now support a version extension string for distributors
2381 who patch heavily. Dynamic module ABI change.
2382
1670ef10
PP
2383PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2384 privilege escalation vulnerability whereby the Exim run-time user
2385 can cause root to append content of the attacker's choosing to
2386 arbitrary files.
2387
c0886197
PP
2388PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2389 (Wolfgang Breyha)
2390
b7487bce
PP
2391PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2392 If dropping privileges for untrusted macros, we disabled normal logging
2393 on the basis that it would fail; for the Exim run-time user, this is not
2394 the case, and it resulted in successful deliveries going unlogged.
2395 Fixed. Reported by Andreas Metzler.
2396
8c07b69f 2397
97fd1e48 2398Exim version 4.73
ed7f7860 2399-----------------
97fd1e48
PP
2400
2401PP/01 Date: & Message-Id: revert to normally being appended to a message,
2402 only prepend for the Resent-* case. Fixes regression introduced in
2403 Exim 4.70 by NM/22 for Bugzilla 607.
2404
6901c596
PP
2405PP/02 Include check_rfc2047_length in configure.default because we're seeing
2406 increasing numbers of administrators be bitten by this.
2407
a8c8d6b5
JJ
2408JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2409
77bb000f
PP
2410PP/03 Bugzilla 994: added openssl_options main configuration option.
2411
a29e5231
PP
2412PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2413
ec5a0394 2414PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2415
55c75993
PP
2416PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2417
453a6645 2418PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2419 without a peer certificate, leading to a segfault because of an
2420 assumption that peers always have certificates. Be a little more
453a6645
PP
2421 paranoid. Problem reported by Martin Tscholak.
2422
8544e77a
PP
2423PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2424 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2425 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2426 CL also introduces -bmalware, various -d+acl logging additions and
2427 more caution in buffer sizes.
8544e77a 2428
83e029d5
PP
2429PP/09 Implemented reverse_ip expansion operator.
2430
ed7f7860
PP
2431PP/10 Bugzilla 937: provide a "debug" ACL control.
2432
7d9f747b
PP
2433PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2434
4b2241d2
PP
2435PP/12 Bugzilla 973: Implement --version.
2436
10385c15
PP
2437PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2438
dbc4b90d
PP
2439PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2440
532be449
PP
2441PP/15 Bugzilla 816: support multiple condition rules on Routers.
2442
6a8de854 2443PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2444 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2445 ignore trailing whitespace.
6a8de854 2446
5dc43717
JJ
2447JJ/02 prevent non-panic DKIM error from being sent to paniclog
2448
2449JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2450 "exim" to be used
55c75993 2451
3346ab01
PP
2452PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2453 Notification from Dr Andrew Aitchison.
2454
491fab4c
PP
2455PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2456 ExtendedDetectionInfo response format.
2457 Notification from John Horne.
2458
13eb9497
PP
2459PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2460 compatible.
2461
2462PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2463 XSL and documented dependency on system catalogs, with examples of how
2464 it normally works.
2465
7f36d675
DW
2466DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2467 access.
2468
c1d94452
DW
2469DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2470 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2471 configuration file which is writeable by the Exim user or group.
2472
e2f5dc15
DW
2473DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2474 of configuration files to cover files specified with the -C option if
2475 they are going to be used with root privileges, not just the default
2476 configuration file.
2477
cd25e41d
DW
2478DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2479 option (effectively making it always true).
2480
261dc43e
DW
2481DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2482 files to be used while preserving root privileges.
2483
fa32850b
DW
2484DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2485 that rogue child processes cannot use them.
2486
79d4bc3d
PP
2487PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2488 run-time user, instead of root.
2489
43236f35 2490PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2491 Exim run-time user without dropping privileges.
2492
fb08281f
DW
2493DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2494 result string, instead of calling string_vformat() twice with the same
2495 arguments.
3346ab01 2496
74935b98
DW
2497DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2498 for other users. Others should always drop root privileges if they use
2499 -C on the command line, even for a whitelisted configure file.
2500
90b6341f
DW
2501DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2502
57730b52
ML
2503NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2504
66581d1e 2505
465e92cf
JJ
2506Exim version 4.72
2507-----------------
2508
453a6645
PP
2509JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2510 $data_path, and $header_path variables; fixed documentation bugs and
2511 typos
465e92cf 2512
453a6645
PP
2513JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2514 exipick to access non-standard spools, including the "frozen" queue
2515 (Finput)
edae0343 2516
9bd3e22c
NM
2517NM/01 Bugzilla 965: Support mysql stored procedures.
2518 Patch from Alain Williams
2519
bb576ff7
NM
2520NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2521
5a1a5845
NM
2522NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2523 Patch from Andreas Metzler
2524
981a9fad
NM
2525NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2526 Patch from Kirill Miazine
2527
7fc497ee
NM
2528NM/05 Bugzilla 671: Added umask to procmail example.
2529
1a41defa
JJ
2530JJ/03 installed exipick 20100323.0, fixing doc bug
2531
a466095c 2532NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2533 directory. Notification and patch from Dan Rosenberg.
a466095c 2534
94a6bd0b
NM
2535TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2536
2537TK/02 Improve log output when DKIM signing operation fails.
2538
2539MH/01 Treat the transport option dkim_domain as a colon separated
2540 list, not as a single string, and sign the message with each element,
2541 omitting multiple occurences of the same signer.
2542
c1b141a8
NM
2543NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2544 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2545
b26eacf1 2546NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2547 Patch by Simon Arlott
2548
179c5980 2549PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2550 MBX locking. Notification from Dan Rosenberg.
179c5980 2551
9bd3e22c 2552
7c6d71af
NM
2553Exim version 4.71
2554-----------------
2555
7d9f747b 2556TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2557
f013fb92
NM
2558NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2559
0eb8eedd
NM
2560NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2561
663ee6d9
NM
2562NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2563
177ebd9b
NM
2564NM/04 Bugzilla 915: Flag broken perl installation during build.
2565
7c6d71af 2566
210f147e
NM
2567Exim version 4.70
2568-----------------
2569
cdd3bb85 2570TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2571 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2572
2573TK/02 Write list of recipients to X-Envelope-Sender header when building
2574 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2575 Hirsch).
cdd3bb85
TK
2576
2577TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2578 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2579 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2580
2581TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2582 by Mark Daniel Reidel <mr@df.eu>.
2583
210f147e
NM
2584NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2585 When building exim an external PCRE library is now needed -
2586 PCRE is a system library on the majority of modern systems.
2587 See entry on PCRE_LIBS in EDITME file.
2588
deafd5b3
NM
2589NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2590 conversation. Added nologin parameter to request.
7d9f747b 2591 Patch contributed by Kirill Miazine.
deafd5b3 2592
089793a4
TF
2593TF/01 Do not log submission mode rewrites if they do not change the address.
2594
5f16ca82
TF
2595TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2596
dae9d94e 2597NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2598 log files in place. Contributed by Roberto Lima.
dae9d94e 2599
7d9f747b 2600NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2601
06864c44
TF
2602TF/03 Bugzilla 615: When checking the local_parts router precondition
2603 after a local_part_suffix or local_part_prefix option, Exim now
2604 does not use the address's named list lookup cache, since this
2605 contains cached lookups for the whole local part.
2606
65a7d8c3 2607NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2608 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2609
23510047 2610TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2611
7d9f747b 2612NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2613
7d8eec3a 2614NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2615 Patch provided by Jan Srzednicki.
6c588e74 2616
89dec7b6
TF
2617TF/05 Leading white space used to be stripped from $spam_report which
2618 wrecked the formatting. Now it is preserved.
5f28a6e8 2619
a99de90c
TF
2620TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2621 that they are available at delivery time.
2622
e2803e40
TF
2623TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2624
7199e1ee
TF
2625TF/08 TLS error reporting now respects the incoming_interface and
2626 incoming_port log selectors.
2627
e276e04b
TF
2628TF/09 Produce a more useful error message if an SMTP transport's hosts
2629 setting expands to an empty string.
2630
ce552449 2631NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2632 Patch provided by Phil Pennock.
ce552449 2633
e765a0f1 2634NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2635 Patch provided by Richard Godbee.
e765a0f1 2636
4f054c63 2637NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2638 acl_smtp_notquit, added index entry.
4f054c63 2639
7d9f747b
PP
2640NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2641 Patch provided by Eugene Bujak.
24c929a2 2642
7d9f747b
PP
2643NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2644 accept(). Patch provided by Maxim Dounin.
cf73943b 2645
b52bc06e 2646NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2647 Patch provided by Phil Pennock.
b52bc06e 2648
447de4b0
NM
2649NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2650
4c69d561 2651NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2652 Patch provided by Brad "anomie" Jorsch.
4c69d561 2653
d5c39246 2654NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2655 Patch provided by Dean Brooks.
9b989985 2656
0b23848a
TK
2657TK/05 Add native DKIM support (does not depend on external libraries).
2658
8f3414a1 2659NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2660 Patch provided by Graeme Fowler.
e2aacdfd 2661
fb6f955d
NM
2662NM/16 Bugzilla 851: Documentation example syntax fix.
2663
2664NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2665
7d9f747b
PP
2666NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2667 lsearch.
dbb0bf41 2668
7d9f747b
PP
2669NM/19 Bugzilla 745: TLS version reporting.
2670 Patch provided by Phil Pennock.
f3766eb5 2671
7d9f747b
PP
2672NM/20 Bugzilla 167: bool: condition support.
2673 Patch provided by Phil Pennock.
36f12725 2674
7d9f747b
PP
2675NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2676 clients. Patch provided by Phil Pennock.
e6060e2c 2677
7d9f747b
PP
2678NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2679 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2680
7d9f747b
PP
2681NM/23 Bugzilla 687: Fix misparses in eximstats.
2682 Patch provided by Heiko Schlittermann.
d5c13d66 2683
7d9f747b
PP
2684NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2685 Patch provided by Heiko Schlittermann.
b2335c0b 2686
7d9f747b 2687NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2688 plus update to original patch.
f4cd9433 2689
7d9f747b 2690NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2691
7d9f747b
PP
2692NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2693 Patch provided by David Brownlee.
8dc71ab3 2694
7d9f747b 2695NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2696
7d9f747b 2697NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2698
7d9f747b 2699NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2700
7d9f747b 2701NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2702
17792b53 2703NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2704 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2705
7d9f747b
PP
2706NM/33 Bugzilla 898: Transport filter timeout fix.
2707 Patch by Todd Rinaldo.
52383f8f 2708
91576cec 2709NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2710 Patch by Serge Demonchaux.
5ca6d115 2711
7d9f747b
PP
2712NM/35 Bugzilla 39: Base64 decode bug fixes.
2713 Patch by Jakob Hirsch.
baee9eee 2714
7d9f747b 2715NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2716
7d9f747b 2717NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2718
7d9f747b 2719NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2720
7d9f747b 2721NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2722
deafd5b3 2723
47db1125
NM
2724Exim version 4.69
2725-----------------
2726
4b3504d0
TK
2727TK/01 Add preliminary DKIM support. Currently requires a forked version of
2728 ALT-N's libdkim that I have put here:
2729 http://duncanthrax.net/exim-experimental/
2730
2731 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2732 were called 'true' and it seems that C99 defines that as a reserved
2733 keyword to be used with 'bool' variable types. That means you could
2734 not include C99-style headers which use bools without triggering
2735 build errors in sieve.c.
2736
81ea09ca
NM
2737NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2738 as mailq or other aliases. Changed the --help handling significantly
2739 to do whats expected. exim_usage() emits usage/help information.
2740
f13cddcb
SC
2741SC/01 Added the -bylocaldomain option to eximstats.
2742
7d9f747b 2743NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2744
7d9f747b 2745NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2746
7d9f747b 2747NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2748
2749
eb4c0de6
PH
2750Exim version 4.68
2751-----------------
2752
2753PH/01 Another patch from the Sieve maintainer.
2754
6a3bceb1
PH
2755PH/02 When an IPv6 address is converted to a string for single-key lookup
2756 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2757 dots are used instead of colons so that keys in lsearch files need not
2758 contain colons. This was done some time before quoting was made available
2759 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2760 (notated using the quote facility) so as to distinguish them from IPv4
2761 keys. This meant that lookups for IP addresses in host lists did not work
2762 for iplsearch lookups.
2763
2764 This has been fixed by arranging for IPv6 addresses to be expressed with
2765 colons if the lookup type is iplsearch. This is not incompatible, because
2766 previously such lookups could never work.
2767
4c04137d 2768 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2769 ordinary lsearch keys. However, making the change in all cases is
2770 incompatible and would probably break a number of configurations.
2771
2e30fa9d
TK
2772TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2773 version.
2774
0806a9c5
MH
2775MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2776 conversion specification without a maximum field width, thereby enabling
2777 a rogue spamd server to cause a buffer overflow. While nobody in their
2778 right mind would setup Exim to query an untrusted spamd server, an
2779 attacker that gains access to a server running spamd could potentially
2780 exploit this vulnerability to run arbitrary code as the Exim user.
2781
ae276964
TK
2782TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2783 $primary_hostname instead of what libspf2 thinks the hosts name is.
2784
0f2cbd1b
MH
2785MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2786 a directory entry by the name of the lookup key. Previously, if a
2787 symlink pointed to a non-existing file or a file in a directory that
2788 Exim lacked permissions to read, a lookup for a key matching that
2789 symlink would fail. Now it is enough that a matching directory entry
2790 exists, symlink or not. (Bugzilla 503.)
2791
2b85bce7
PH
2792PH/03 The body_linecount and body_zerocount variables are now exported in the
2793 local_scan API.
2794
93655c46
PH
2795PH/04 Added the $dnslist_matched variable.
2796
6c512171
PH
2797PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2798 This means they are set thereafter only if the connection becomes
2799 encrypted.
2800
2801PH/06 Added the client_condition to authenticators so that some can be skipped
2802 by clients under certain conditions.
2803
aa6dc513
PH
2804PH/07 The error message for a badly-placed control=no_multiline_responses left
2805 "_responses" off the end of the name.
2806
a96603a0
PH
2807PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2808
8f240103
PH
2809PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2810 (without spaces) instead of just copying the configuration text.
2811
2812PH/10 Added the /noupdate option to the ratelimit ACL condition.
2813
d677b2f2
PH
2814PH/11 Added $max_received_linelength.
2815
d52120f2
PH
2816PH/12 Added +ignore_defer and +include_defer to host lists.
2817
64f2600a
PH
2818PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2819 way in which PCRE > 7.0 is built.
2820
8669f003
PH
2821PH/14 Implemented queue_only_load_latch.
2822
a4dc33a8
PH
2823PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2824 MAIL command. The effect was to mangle the value on 64-bit systems.
2825
d6a60c0f
PH
2826PH/16 Another patch from the Sieve maintainer.
2827
8f128379
PH
2828PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2829
8932dffe
PH
2830PH/18 If a system quota error occurred while trying to create the file for
2831 a maildir delivery, the message "Mailbox is full" was not appended to the
2832 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2833 only to a quota excession during the actual writing of the file.
d6a60c0f 2834
ddea74fa 2835PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
2836 characters?) which causes problems in log lines. The DN values are now
2837 passed through string_printing() before being added to log lines.
2838
ddea74fa 2839PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
2840 and InterBase are left for another time.)
2841
ddea74fa
PH
2842PH/21 Added message_body_newlines option.
2843
ce9f225c
PH
2844PH/22 Guard against possible overflow in moan_check_errorcopy().
2845
19897d52
PH
2846PH/23 POSIX allows open() to be a macro; guard against that.
2847
bc64a74d
PH
2848PH/24 If the recipient of an error message contained an @ in the local part
2849 (suitably quoted, of course), incorrect values were put in $domain and
2850 $local_part during the evaluation of errors_copy.
2851
eb4c0de6 2852
b4ed4da0
PH
2853Exim version 4.67
2854-----------------
2855
22ad45c9
MH
2856MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2857 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2858 Jan Srzednicki.
2859
b4ed4da0
PH
2860PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2861 issue a MAIL command.
2862
431b7361
PH
2863PH/02 In an ACL statement such as
2864
2865 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2866
2867 if a client was not listed at all, or was listed with a value other than
2868 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2869 the condition was not true (as it should be), so access was not denied.
2870 The bug was that the ! inversion was incorrectly passed on to the second
2871 item. This has been fixed.
2872
2873PH/03 Added additional dnslists conditions == and =& which are different from
2874 = and & when the dns lookup returns more than one IP address.
2875
83da1223
PH
2876PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2877 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2878
54fc8428
PH
2879PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2880 FSYNC, which compiles an option called disable_fsync that allows for
2881 bypassing fsync(). The documentation is heavily laced with warnings.
2882
34c5e8dd
SC
2883SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2884
bbe15da8
PH
2885PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2886 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2887 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2888 including adding "make clean"; (3) Added -fPIC when compiling the test
2889 dynamically loaded module, to get rid of a warning.
2890
0e8a9471
MH
2891MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2892 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2893 = 0s. The bug is otherwise harmless.
2894
f0872424
PH
2895PH/07 There was a bug in the dovecot authenticator such that the value of
2896 $auth1 could be overwritten, and so not correctly preserved, after a
2897 successful authentication. This usually meant that the value preserved by
2898 the server_setid option was incorrect.
2899
b01dd148
PH
2900PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2901
6bf342e1
PH
2902PH/09 Installed PCRE release 7.0.
2903
273f34d0
PH
2904PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2905 run for batched SMTP input. It is now run at the start of every message
2906 in the batch. While fixing this I discovered that the process information
2907 (output by running exiwhat) was not always getting set for -bs and -bS
2908 input. This is fixed, and it now also says "batched" for BSMTP.
2909
cf8b11a5
PH
2910PH/11 Added control=no_pipelining.
2911
41c7c167
PH
2912PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2913 patch, slightly modified), and move the expansion of helo_data till after
2914 the connection is made in the smtp transport (so it can use these
2915 values).
2916
9c57cbc0
PH
2917PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2918
f3f065bb
PH
2919PH/14 Added log_selector = +pid.
2920
047bdd8c
PH
2921PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2922
0ce9abe6
PH
2923PH/16 Add ${if forany and ${if forall.
2924
0e22dfd1
PH
2925PH/17 Added dsn_from option to vary the From: line in DSNs.
2926
4c590bd1
PH
2927PH/18 Flush SMTP output before performing a callout, unless control =
2928 no_callout_flush is set.
2929
09945f1e
PH
2930PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2931 was true (the default) a successful delivery failed to delete the retry
2932 item, thus causing premature timeout of the address. The bug is now
2933 fixed.
2934
c51b8e75
PH
2935PH/20 Added hosts_avoid_pipelining to the smtp transport.
2936
e28326d8 2937PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 2938 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
2939 other ACL rejections are.
2940
75b1493f
PH
2941PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2942 with slight modification.
2943
7c5214ec
PH
2944PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2945 draft, changing the syntax and factoring some duplicate code".
2946
4311097e
PH
2947PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2948 for deliveries of the second and subsequent messages over the same SMTP
2949 connection.
2950
29f89cad
PH
2951PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2952 ${reduce, with only minor "tidies".
2953
5e687460
SC
2954SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2955
c3611384
PH
2956PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2957 expansion side effects.
2958
5a11a7b4
PH
2959PH/27 When a message times out after an over-quota error from an Exim-imposed
2960 quota, the bounce message says "mailbox is full". This message was not
2961 being given when it was a system quota that was exceeded. It now should
2962 be the same.
2963
0e20aff9
MH
2964MH/03 Made $recipients available in local_scan(). local_scan() already has
2965 better access to the recipient list through recipients_list[], but
2966 $recipients can be useful in postmaster-provided expansion strings.
2967
ca86f471
PH
2968PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2969 in the case of a MAIL command with additional options following the
2970 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2971 were accidentally chopped off.
2972
a14e5636
PH
2973PH/29 SMTP synchronization checks are implemented when a command is read -
2974 there is a check that no more input is waiting when there shouldn't be
2975 any. However, for some commands, a delay in an ACL can mean that it is
2976 some time before the response is written. In this time, more input might
2977 arrive, invalidly. So now there are extra checks after an ACL has run for
2978 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2979 pipelining has not been advertised.
2980
ec95d1a6
PH
2981PH/30 MH's patch to allow iscntrl() characters to be list separators.
2982
42855d71
PH
2983PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2984 returned in the SMTP response when smtp_return_error_details was false.
2985 This has been fixed.
2986
57c2c631
PH
2987PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2988 instead of the C I/O that was originally supplied, because problems were
2989 reported on Solaris.
2990
58c01c94
PH
2991PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2992 Exim which did not show up earlier: it was assuming that a call to
2993 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2994 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2995 was a macro that became an assignment, so it seemed to work. This has
2996 changed to a proper function call with a void return, hence the compile
2997 error. Exim's code has been fixed.
2998
dee5a20a
PH
2999PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3000 cpus.
3001
d2ee6114
PH
3002PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3003
b2d5182b
PH
3004PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3005
79749a79
PH
3006PH/37 If a message is not accepted after it has had an id assigned (e.g.
3007 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
3008 "Completed" line in the log. When some messages of this type were
3009 selected by exigrep, they were listed as "not completed". Others were
3010 picked up by some special patterns. I have improved the selection
3011 criteria to be more general.
79749a79 3012
c456d9bb
PH
3013PH/38 The host_find_failed option in the manualroute router can now be set
3014 to "ignore", to completely ignore a host whose IP address cannot be
3015 found. If all hosts are ignored, the behaviour is controlled by the new
3016 host_all_ignored option.
3017
cd9868ec
PH
3018PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3019 homing or because of multiple MX records with /mx) generated more than
3020 one IP address, and the following item turned out to be the local host,
3021 all the secondary addresses of the first item were incorrectly removed
3022 from the list, along with the local host and any following hosts (which
3023 is what is supposed to happen).
3024
ebeaf996
PH
3025PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3026 whoever called Exim into the -H file. In the case of the daemon it was
3027 behaving confusingly. When first started, it used values for whoever
3028 started the daemon, but after a SIGHUP it used the Exim user (because it
3029 calls itself on a restart). I have changed the code so that it now always
3030 uses the Exim user.
3031
2679d413
PH
3032PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3033 message are rejected with the same error (e.g. no authentication or bad
3034 sender address), and a DATA command is nevertheless sent (as can happen
3035 with PIPELINING or a stupid MUA), the error message that was given to the
3036 RCPT commands is included in the rejection of the DATA command. This is
3037 intended to be helpful for MUAs that show only the final error to their
3038 users.
3039
84024b72
PH
3040PH/42 Another patch from the Sieve maintainer.
3041
8005d38e
SC
3042SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3043 Eximstats - Fixed some broken HTML links and added missing column headers
3044 (Jez Hancock).
3045 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3046 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3047
3298c6c6
SC
3048SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3049
a43a27c5
PH
3050PH/43 Yet another patch from the Sieve maintainer.
3051
58eb016e 3052PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
3053 the response to the final '.' that terminates a message, but only in the
3054 case where the client has not sent further data following the '.'
3055 (unfortunately, this is allowed). However, in many cases there won't be
3056 any further data because there won't be any more messages to send. A call
3057 to select() can be used: if it shows that the input is "ready", there is
3058 either input waiting, or the socket has been closed. An attempt to read
3059 the next input character can distinguish the two cases. Previously, Exim
58eb016e 3060 would have sent an OK response which the client would never have see.
563b63fa
PH
3061 This could lead to message repetition. This fix should cure that, at
3062 least in a lot of common cases.
58eb016e 3063
b43a74ea
PH
3064PH/45 Do not advertise STARTTLS in response to HELP unless it would be
3065 advertised in response to EHLO.
3066
b4ed4da0 3067
5dd1517f
PH
3068Exim version 4.66
3069-----------------
3070
3071PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
3072 fixed by 4.65/MH/01 (is this a record?) are fixed:
3073
3074 (i) An empty string was always treated as zero by the numeric comparison
3075 operators. This behaviour has been restored.
3076
3077 (ii) It is documented that the numeric comparison operators always treat
3078 their arguments as decimal numbers. This was broken in that numbers
3079 starting with 0 were being interpreted as octal.
3080
3081 While fixing these problems I realized that there was another issue that
3082 hadn't been noticed. Values of message_size_limit (both the global option
3083 and the transport option) were treated as octal if they started with 0.
3084 The documentation was vague. These values are now always treated as
3085 decimal, and I will make that clear in the documentation.
3086
3087
93cfa765
TK
3088Exim version 4.65
3089-----------------
3090
3091TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
3092 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
3093 versions. (#438)
3094
d6066548
MH
3095MH/01 Don't check that the operands of numeric comparison operators are
3096 integers when their expansion is in "skipping" mode (fixes bug
3097 introduced by 4.64-PH/07).
3098
4362ff0d
PH
3099PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
3100 child addresses, Exim now panics and dies. Previously, because the count
3101 is held in a short int, deliveries were likely to be lost. As such a
3102 large number of recipients for a single message is ridiculous
3103 (performance will be very, very poor), I have chosen to impose a limit
3104 rather than extend the field.
3105
93cfa765 3106
944e9e9c
TF
3107Exim version 4.64
3108-----------------
aa41d2de 3109
21d74bd9
TK
3110TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
3111 leftover -K file (the existence of which was triggered by #402).
3112 While we were at it, introduced process PID as part of the -K
3113 filename. This should rule out race conditions when creating
3114 these files.
3115
3116TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
3117 processing considerably. Previous code took too long for large mails,
3118 triggering a timeout which in turn triggers #401.
3119
3120TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
3121 in the DK code in transports.c. sendfile() is not really portable,
3122 hence the _LINUX specificness.
944e9e9c
TF
3123
3124TF/01 In the add_headers option to the mail command in an Exim filter,
3125 there was a bug that Exim would claim a syntax error in any
3126 header after the first one which had an odd number of characters
3127 in the field name.
3128
2b1c6e3a
PH
3129PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
3130 callout verification, Exim cached a "reject" for the entire domain. This
3131 is correct for most verifications, but it is not correct for a recipient
3132 verification with use_sender or use_postmaster set, because in that case
3133 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
3134 case of MAIL FROM:<> rejection from other early rejections (e.g.
3135 rejection of HELO). When verifying a recipient using a non-null MAIL
3136 address, the cache is ignored if it shows MAIL FROM:<> rejection.
3137 Whatever the result of the callout, the value of the domain cache is
3138 left unchanged (for any other kind of callout, getting as far as trying
3139 RCPT means that the domain itself is ok).
3140
1f872c80
PH
3141PH/02 Tidied a number of unused variable and signed/unsigned warnings that
3142 gcc 4.1.1 threw up.
3143
3144PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
3145 manifest itself as EPIPE rather than ECONNECT. When tidying away a
3146 session, the daemon ignores ECONNECT errors and logs others; it now
3147 ignores EPIPE as well.
3148
d203e649
PH
3149PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
3150 (quoted-printable decoding).
3151
cc2ed8f7 3152PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 3153 later the small subsequent patch to fix an introduced bug.
f951fd57 3154
ddfcd446
PH
3155PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
3156
d45b1de8
PH
3157PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
3158
3159PH/08 An error is now given if message_size_limit is specified negative.
3160
38a0a95f 3161PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 3162 to be given (somewhat) arbitrary names.
38a0a95f 3163
a2405d83
JJ
3164JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
3165 in 4.64-PH/09.
3166
3167JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
3168 miscellaneous code fixes
3169
6ea85e9a
PH
3170PH/10 Added the log_reject_target ACL modifier to specify where to log
3171 rejections.
3172
26da7e20
PH
3173PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
3174 hostname. This is wrong, because it relates to the incoming message (and
3175 probably the interface on which it is arriving) and not to the outgoing
3176 callout (which could be using a different interface). This has been
3177 changed to use the value of the helo_data option from the smtp transport
3178 instead - this is what is used when a message is actually being sent. If
3179 there is no remote transport (possible with a router that sets up host
3180 addresses), $smtp_active_hostname is used.
6ea85e9a 3181
14aa5a05 3182PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 3183 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
3184 (a) The code assumed that strncpy() returns a negative number on buffer
3185 overflow, which isn't the case. Replaced with Exim's string_format()
3186 function.
3187 (b) There were several signed/unsigned issues. I just did the minimum
3188 hacking in of casts. There is scope for a larger refactoring.
3189 (c) The code used strcasecmp() which is not a standard C function.
3190 Replaced with Exim's strcmpic() function.
3191 (d) The code set only $1; it now sets $auth1 as well.
3192 (e) A simple test gave the error "authentication client didn't specify
3193 service in request". It would seem that Dovecot has changed its
3194 interface. Fortunately there's a specification; I followed it and
3195 changed what the client sends and it appears to be working now.
3196
ff75a1f7
PH
3197PH/13 Added $message_headers_raw to provide the headers without RFC 2047
3198 decoding.
3199
e6f6568e
PH
3200PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
3201 address A is aliased to B and C, where B exists and C does not. Without
3202 -v the output is "A verified" because verification stops after a
3203 successful redirection if more than one address is generated. However,
3204 with -v the child addresses are also verified. Exim was outputting "A
3205 failed to verify" and then showing the successful verification for C,
3206 with its parentage. It now outputs "B failed to verify", showing B's
3207 parentage before showing the successful verification of C.
3208
d6f6e0dc
PH
3209PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
3210 look up a TXT record in a specific list after matching in a combined
3211 list.
3212
322050c2
PH
3213PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
3214 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
3215 they consult the DNS. I had assumed they would set it the way they
3216 wanted; and indeed my experiments on Linux seem to show that in some
3217 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
3218 To be on the safe side, however, I have now made the interface to
3219 host_find_byname() similar to host_find_bydns(), with an argument
3220 containing the DNS resolver options. The host_find_byname() function now
3221 sets these options at its start, just as host_find_bydns() does. The smtp
3222 transport options dns_qualify_single and dns_search_parents are passed to
3223 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
3224 of host_find_byname() use the default settings of RES_DEFNAMES
3225 (qualify_single) but not RES_DNSRCH (search_parents).
3226
08955dd3
PH
3227PH/17 Applied (a modified version of) Nico Erfurth's patch to make
3228 spool_read_header() do less string testing, by means of a preliminary
3229 switch on the second character of optional "-foo" lines. (This is
3230 overdue, caused by the large number of possibilities that now exist.
3231 Originally there were few.) While I was there, I also converted the
3232 str(n)cmp tests so they don't re-test the leading "-" and the first
3233 character, in the hope this might squeeze out yet more improvement.
3234
1eccaa59
PH
3235PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
3236 flag allowing group syntax was set by the header_syntax check but not
3237 turned off, possible causing trouble later; (2) The flag was not