Fix taint issue with retry records. Bug 2492
[exim.git] / doc / doc-txt / ChangeLog
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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
00b35aee
FG
6Exim version 4.93+fixes
7-----------------------
8This is not an official release. It is just a branch, collecting
9proposed bugfixes. Depending on your environment the fixes may be
10necessary to build and/or run Exim successfully.
11
5cb18fca
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12JH/05 Regard command-line receipients as tainted.
13
00b35aee
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14JH/07 Bug 2489: Fix crash in the "pam" expansion condition. It seems that the
15 PAM library frees one of the arguments given to it, despite the
16 documentation. Therefore a plain malloc must be used.
17
5169b5fa
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18JH/08 Bug 2491: Use tainted buffers for the transport smtp context. Previously
19 on-stack buffers were used, resulting in a taint trap when DSN information
20 copied from a received message was written into the buffer.
21
92a158a6
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22JH/09 Bug 2493: Harden ARC verify against Outlook, whick has been seen to mix
23 the ordering of its ARC headers. This caused a crash.
24
2529a7a6
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25JH/10 Bug 2492: Use tainted memory for retry record when needed. Previously when
26 a new record was being constructed with information from the peer, a trap
27 was taken.
28
00b35aee 29
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30Exim version 4.93
31-----------------
32
8a40db1c
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33JH/01 OpenSSL: With debug enabled output keying information sufficient, server
34 side, to decode a TLS 1.3 packet capture.
40ed89b3 35
fc243e94 36JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
d7f31bb6
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37 Previously the default library behaviour applied, sending two, each in
38 its own TCP segment.
39
897024f1
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40JH/03 Debug output for ACL now gives the config file name and line number for
41 each verb.
42
f1be21cf
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43JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
44
fe12ec88
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45JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
46
05bf16f6
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47JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
48 buffer overrun for (non-chunking) other transports.
49
fc243e94
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50JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
51 TLS1.3, means that a server rejecting a client certificate is not visible
52 to the client until the first read of encrypted data (typically the
53 response to EHLO). Add detection for that case and treat it as a failed
54 TLS connection attempt, so that the normal retry-in-clear can work (if
55 suitably configured).
56
c05bdbd6 57JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
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58 and/or domain. Found and fixed by Jason Betts.
59
14bc9cf0
JH
60JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
61 configuration). If a CNAME target was not a wellformed name pattern, a
62 crash could result.
63
254f38d1
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64JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
65 the OS reports them interleaved with other addresses.
66
c09dbcfb
JH
67JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
68 used both for input and for a verify callout, both encrypted, SMTP
69 responses being sent by the server could be lost. This resulted in
70 dropped connections and sometimes bounces generated by a peer sending
71 to this system.
254f38d1 72
f9fc9427
JH
73JH/11 Harden plaintext authenticator against a badly misconfigured client-send
74 string. Previously it was possible to cause undefined behaviour in a
75 library routine (usually a crash). Found by "zerons".
76
e6024a5e
JH
77JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
78 output.
79
1fbf41cd
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80JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
81 API was removed, so update to use the newer ones.
82
3c55eef2 83JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
00c0dd4e 84 any timeout set, is taking a long time. Previously we would hang on to a
3c55eef2
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85 rotated logfile "forever" if the input was arriving with long gaps
86 (a previous attempt to fix addressed lack, for a long time, of initial
87 input).
88
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89HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
90 shared (NFS) environment. The length of the tempfile name is now
91 4 + 16 ("hdr.$message_exim_id") which might break on file
92 systems which restrict the file name length to lower values.
93 (It was "hdr.$pid".)
94
7d8d08c4 95HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
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96 shared (NFS) environment.
97
7d8d08c4 98HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
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99 did for all versions <4.90). Notably -M, -m, --invert, -I may be
100 affected.
101
bd83c6f9
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102JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
103 on some platforms for bit 31.
104
d9acfc1c
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105JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
106 to changes apparently associated with TLS1.3 handling some of the APIs
107 previously used were either nonfunctional or inappropriate. Strings
108 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
109 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
110 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
111 This affects log line X= elements, the $tls_{in,out}_cipher variables,
112 and the use of specific cipher names in the encrypted= ACL condition.
113
b10c87b3
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114JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
115
7a501c87
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116JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
117 verification result was not updated unless hosts_require_ocsp applied.
118
e5903596
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119JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
120 queue_list_requires_admin set to false, non-admin users were denied the
121 facility.
122
12d95aa6
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123JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
124 directory-of-certs mode. Previously they were advertised despite the
125 documentation.
126
96eb7d2a
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127JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
128 A single TCP connection by a client will now hold a TLS connection open
129 for multiple message deliveries, by default. Previoud the default was to
130 not do so.
131
59c0959a 132JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
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133 default. If built with the facility, DANE will be used. The facility
134 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
135
136JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
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137 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
138 must be defined and you must still, unless you define DISABLE_TLS, manage
139 the the include-dir and library-file requirements that go with that
140 choice. Non-TLS builds are still supported.
59c0959a 141
48519cef
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142JH/24 Fix duplicated logging of peer name/address, on a transport connection-
143 reject under TFO.
96eb7d2a 144
efad2f41 145JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
4e48d56c 146 default. If the platform supports and has the facility enabled, it will
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147 be requested on all coneections.
148
4e48d56c
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149JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
150 controlled by the build-time option SUPPORT_PIPE_CONNECT.
151
6ee11061 152PP/01 Unbreak heimdal_gssapi, broken in 4.92.
0a5441fc 153
87abcb24
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154JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
155 success-DSN messages. Previously the From: header was always the default
156 one for these; the option was ignored.
6ee11061 157
0a5441fc
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158JH/28 Fix the timeout on smtp response to apply to the whole response.
159 Previously it was reset for every read, so a teergrubing peer sending
160 single bytes within the time limit could extend the connection for a
161 long time. Credit to Qualsys Security Advisory Team for the discovery.
162
436bda2a
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163JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
164 delivery address, which leaked information of the results of local
165 forwarding. Change to the original envelope recipient address, per
166 standards.
167
df98a6ff
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168JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
169 requested. Previously not bounce was generated and a log entry of
170 error ignored was made.
171
21aa0597
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172JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
173
f3ebb786
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174JH/32 Introduce a general tainting mechanism for values read from the input
175 channel, and values derived from them. Refuse to expand any tainted
176 values, to catch one form of exploit.
177
9fa4d5b4
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178JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
179 was unused and the unexpanded text used for the test. Found and
180 fixed by Ruben Jenster.
181
bd231acd
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182JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
183 an attempt to use a TLS library read routine dereffed a nul pointer,
184 causing a segfault.
185
7b564712
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186JH/35 Bug 2409: filter out-of-spec chars from callout response before using
187 them in our smtp response.
188
9c6881f8 189JH/36 Have the general router option retry_use_local_part default to true when
dbbf21a7
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190 any of the restrictive preconditions are set (to anything). Previously it
191 was only for check_local user. The change removes one item of manual
192 configuration which is required for proper retries when a remote router
193 handles a subset of addresses for a domain.
194
9c6881f8
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195JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
196 link count into consideration.
197
7d8d08c4
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198HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
199 caused the extension of big_buffer, the following lines were ignored.
200
201JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
202 accordance with RFC 2308. Previously there was no expiry, so a longlived
203 receive process (eg. due to ACL delays) versus a short SOA value could
204 surprise.
205
c3aefacc
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206HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
207
1a2e76e1
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208JH/39 Promote DMARC support to mainline.
209
d6c829b9
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210JH/40 Bug 2452: Add a References: header to DSNs.
211
49132a3b
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212JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
213 parameters. The relevant library call is documented as "Deprecated: This
214 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
215 3.6.0, DH parameters are negotiated following RFC7919."
216
ab0e957b 217HS/06 Change the default of dnssec_request_domains to "*"
40ed89b3 218
c5040dfd
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219JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
220 carried on and emitted a BDAT command, even when PIPELINING was not
221 active.
222
13e70f55
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223JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
224 buffer was used for the filename, resulting in a trap when tainted
225 arguments (eg. $domain) were used.
226
2043336d
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227JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
228 recommended to avoid a possible server-load attack. The feature can be
229 re-enabled via the openssl_options main cofiguration option.
230
b2d54f83
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231JH/45 local_scan API: documented the current smtp_printf() call. This changed
232 for version 4.90 - adding a "more data" boolean to the arguments.
b3317cfa
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233 Bumped the ABI version number also, this having been missed previously;
234 release versions 4.90 to 4.92.3 inclusive were effectively broken in
235 respect of usage of smtp_printf() by either local_scan code or libraries
236 accessed via the ${dlfunc } expansion item. Both will need coding
237 adjustment for any calls to smtp_printf() to match the new function
238 signature; a FALSE value for the new argument is always safe.
b2d54f83 239
1bf08084
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240JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
241 the file-offset (which the Linux syscall does, and exim expects); this
242 resulted in an indefinite loop.
243
7af11cd0
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244JH/47 ARC: fix crash in signing, triggered when a configuration error failed
245 to do ARC verification. The Authentication-Results: header line added
246 by the configuration then had no ARC item.
247
c5040dfd 248
d99f54e4
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249Exim version 4.92
250-----------------
251
9723f966
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252JH/01 Remove code calling the customisable local_scan function, unless a new
253 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
254
255JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
64b67b65
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256 non-signal-safe functions being used.
257
258JH/03 Bug 2269: When presented with a received message having a stupidly large
259 number of DKIM-Signature headers, disable DKIM verification to avoid
260 a resource-consumption attack. The limit is set at twenty.
9723f966 261
ea7b1f16
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262JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
263 report of oldest_pass in ${authres } in consequence, and separate out
264 some descriptions of reasons for verification fail.
265
cfbb0d24
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266JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
267 files in the spool were present and unlocked. A queue-runner could spot
268 them, resulting in a duplicate delivery. Fix that by doing the unlock
0488984d
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269 after the unlink. Investigation by Tim Stewart. Take the opportunity to
270 add more error-checking on spoolfile handling while that code is being
cfbb0d24
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271 messed with.
272
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273PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
274 No known attacks, no CVE, this is defensive hardening.
275
1bd642c2
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276JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
277 a queue-runner could start a delivery while other operations were ongoing.
278 Cutthrough delivery was a common victim, resulting in duplicate delivery.
279 Found and investigated by Tim Stewart. Fix by using the open message data
280 file handle rather than opening another, and not locally closing it (which
281 releases a lock) for that case, while creating the temporary .eml format
282 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
283
2ddb4094
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284JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
285 $sender_verify_failure/$recipient_verify_failure to "random".
286
1613fd68
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287JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
288 legitimate.
289
e6057245
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290JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
291 Previously this would segfault.
292
7b9822bf
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293JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
294 segfault.
295
d8d9f930
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296JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
297 like zero, since the resolver should be doing this for us, But we need one
298 as a CNAME but no MX presence gets the CNAME returned; we need to check
299 that doesn't point to an MX to declare it "no MX returned" rather than
300 "error, loop". A new main option is added so the older capability of
301 following some limited number of chain links is maintained.
302
61e3f250
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303JH/12 Add client-ip info to non-pass iprev ${authres } lines.
304
7a8b9519
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305JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
306 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
307 now-deprecated earlier definitions used only specified the range up to TLS
308 1.2 (in the older-version library docs).
309
49e56fb3
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310JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
311
74f1a423
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312JH/15 Rework TLS client-side context management. Stop using a global, and
313 explicitly pass a context around. This enables future use of TLS for
314 connections to service-daemons (eg. malware scanning) while a client smtp
315 connection is using TLS; with cutthrough connections this is quite likely.
316
5054c4fd 317JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
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318
319JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 320
946515bf
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321JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
322 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
323 Previously the "utf8" would be re-prepended for every additional message.
324
8c34c611
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325JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
326 Previously thery were accepted, resulting in issues when attempting to
327 forward messages to a non-supporting MTA.
328
1bca4f5f
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329PP/02 Let -n work with printing macros too, not just options.
330
8a6b4e02
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331JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
332 one parent address was copied, and bogus data was used at delivery-logging
333 time. Either a crash (after delivery) or bogus log data could result.
334 Discovery and analysis by Tim Stewart.
335
0a682b6c
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336PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
337 Previously if the string ended mid-character, we did not insert the
338 promised '?' replacement.
339
c2c451ac
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340PP/04 Documentation: current string operators work on bytes, not codepoints.
341
8768d548
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342JH/21 Change as many as possible of the global flags into one-bit bitfields; these
343 should pack well giving a smaller memory footprint so better caching and
344 therefore performance. Group the declarations where this can't be done so
345 that the byte-sized flag variables are not interspersed among pointer
346 variables, giving a better chance of good packing by the compiler.
347
5455f548
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348JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
349 non-null, to avoid issues with sites running BATV. Previously reports were
350 sent with an empty envelope sender so looked like bounces.
351
25beaee4
MK
352JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
353 The ignore_error flag wasn't being returned from the filter subprocess so
354 was not set for later routers. Investigation and fix by Matthias Kurz.
355
7ea1237c 356JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 357 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
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358 -Mrm. Developement by Matthias Kurz, hacked on by JH.
359
ebda598a
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360JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
361 a "Gnu special" function, asprintf() in the DB utility binary builds; I
362 hope that is portable enough.
363
570cb1bd
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364JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
365 requiring a known-CA anchor certificate; make it now rely entirely on the
366 TLSA as an anchor. Checking the name on the leaf cert against the name
367 on the A-record for the host is still done for TA (but not for EE mode).
368
eb58ddf5
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369JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
370 included in delivery lines for non-proxied connections, when compiled with
371 SUPPORT_SOCKS and running with proxy logging enabled.
372
ffbc20ed
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373JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
374 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
375 move the existing event to fire before the normal logging of message
376 failure so that custom logging is bracketed by normal logging.
377
4e928780
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378JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
379 msg:fail:internal event. Developement by Matthias Kurz.
380
75c121f0 381JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 382 far too small for todays use of crypto signatures stored there. Go all
75c121f0
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383 the way to the max DNS message size of 64kB, even though this might be
384 overmuch for IOT constrained device use.
385
e30f4f43
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386JH/31 Fix a bad use of a copy function, which could be used to pointlessly
387 copy a string over itself. The library routine is documented as not
388 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
389
a45431fa
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390JH/32 For main options check_spool_space and check_inode_space, where the
391 platform supports 64b integers, support more than the previous 2^31 kB
392 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
393 the previous G, M, k.
394
c0fb53b7
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395JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
396 $authenticated_fail_id variable on authentication failure. Previously
397 it was unset.
398
6aac3239
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399JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
400 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
401 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
402 GNUTLS_SEC_PARAM_MEDIUM.
403
5a2a0989
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404JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
405 side. Previously we would continue as if no SNI had been received.
406
de6f74f2 407JH/36 Harden the handling of string-lists. When a list consisted of a sole
b72f857f
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408 "<" character, which should be a list-separator specification, we walked
409 off past the nul-terimation.
410
de6f74f2
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411JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
412 causes) even when the retry time is not yet met. Previously they were
413 not, meaning that when (say) an account was over-quota and temp-rejecting,
414 and multiple senders' messages were queued, only one sender would get
415 notified on each configured delay_warning cycle.
416
aa6e77af 417JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 418
25fa0868
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419JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
420 cipher-suites, an error can be left on the stack even for a succeeding
421 accept; this results in impossible error messages when a later operation
422 actually does fail.
423
cb6bd80f
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424AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
425 return error codes indicating retry. Under TLS1.3 this becomes required.
426
427JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
428 it only wrote the new authenticators, resulting in a lack of tracking of
429 peer changes of ESMTP extensions until the next cache flush.
518b70e9 430
56ac062a
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431JH/41 Fix the loop reading a message header line to check for integer overflow,
432 and more-often against header_maxsize. Previously a crafted message could
433 induce a crash of the recive process; now the message is cleanly rejected.
434
ae63862b
MA
435JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
436 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
437
9723f966 438
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439Exim version 4.91
440-----------------
459fca58 441
c39c8870 442GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
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443 When redis_servers is set to a list of > 1 element, and the Redis servers
444 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
445 case of MOVED into a DEFER case instead, thus moving the query onto the
446 next server in the list. For a cluster of N elements, all N servers must
447 be defined in redis_servers.
c39c8870 448
0800ef83
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449GF/02 Catch and remove uninitialized value warning in exiqsumm
450 Check for existence of @ARGV before looking at $ARGV[0]
451
459fca58
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452JH/01 Replace the store_release() internal interface with store_newblock(),
453 which internalises the check required to safely use the old one, plus
454 the allocate and data copy operations duplicated in both (!) of the
455 extant use locations.
456
944e8b37
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457JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
458 modifier. This matches the restriction on the commandline.
459
bbfb5dcd
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460JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
461 Previously only the last row was returned.
462
a05d3e34
JH
463JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
464 we assumed that tags in the header were well-formed, and parsed the
465 element content after inspecting only the first char of the tag.
466 Assumptions at that stage could crash the receive process on malformed
467 input.
468
ce93c6d8
JH
469JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
470 While running the DKIM ACL we operate on the Permanent memory pool so that
471 variables created with "set" persist to the DATA ACL. Also (at any time)
472 DNS lookups that fail create cache records using the Permanent pool. But
473 expansions release any allocations made on the current pool - so a dnsdb
474 lookup expansion done in the DKIM ACL releases the memory used for the
475 DNS negative-cache, and bad things result. Solution is to switch to the
476 Main pool for expansions.
477 While we're in that code, add checks on the DNS cache during store_reset,
478 active in the testsuite.
479 Problem spotted, and debugging aided, by Wolfgang Breyha.
480
2577f55f
JH
481JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
482 When none of the hosts presented to a transport match an already-open
483 connection, close it and proceed with the list. Previously we would
484 queue the message. Spotted by Lena with Yahoo, probably involving
485 round-robin DNS.
486
5b6f7658
JH
487JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
488 Previously a spurious "250 OK id=" response was appended to the proper
489 failure response.
490
c11d665d
JH
491JH/08 The "support for" informational output now, which built with Content
492 Scanning support, has a line for the malware scanner interfaces compiled
493 in. Interface can be individually included or not at build time.
e5ba8aa7
JH
494
495JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
496 by the template makefile "src/EDITME". The "STREAM" support for an older
497 ClamAV interface method is removed.
c11d665d 498
ba0e37b1
JH
499JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
500 rows affected is given instead).
501
96508de1
JH
502JH/11 The runtime Berkeley DB library version is now additionally output by
503 "exim -d -bV". Previously only the compile-time version was shown.
504
06fdb9f7
JH
505JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
506 SMTP connection. Previously, when one had more receipients than the
507 first, an abortive onward connection was made. Move to full support for
508 multiple onward connections in sequence, handling cutthrough connection
509 for all multi-message initiating connections.
510
f83a760f
JH
511JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
512 routers. Previously, a multi-recipient message would fail to match the
513 onward-connection opened for the first recipient, and cause its closure.
514
f1fed05b
JH
515JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
516 a timeout on read on a GnuTLS initiating connection, resulting in the
517 initiating connection being dropped. This mattered most when the callout
518 was marked defer_ok. Fix to keep the two timeout-detection methods
519 separate.
520
051d5efa
JH
521JH/15 Relax results from ACL control request to enable cutthrough, in
522 unsupported situations, from error to silently (except under debug)
523 ignoring. This covers use with PRDR, frozen messages, queue-only and
524 fake-reject.
525
cf3cd306
HSHR
526HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
527
744976d4
JH
528JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
529 metadata, resulting in a crash in free().
530
aab9a843 531PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 532 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 533 Broken also in d185889f4, with init system revamp.
7be14582 534
83d2a861
JH
535JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
536 Previously we abruptly closed the connection after reading a malware-
537 found indication; now we go on to read the "scan ok" response line,
538 and send a quit.
539
6741531c
JH
540JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
541 ACL. Previously, a crash would result.
542
85e03244
JH
543JH/19 Speed up macro lookups during configuration file read, by skipping non-
544 macro text after a replacement (previously it was only once per line) and
545 by skipping builtin macros when searching for an uppercase lead character.
546
c0635b6d
JH
547JH/20 DANE support moved from Experimental to mainline. The Makefile control
548 for the build is renamed.
549
b808677c
JH
550JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
551 was allocated for every new TLS startup, meaning one per message. Fix
552 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
553
6678c382
JH
554JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
555 reported the original. Fix to report (as far as possible) the ACL
556 result replacing the original.
557
dec766a1
WB
558JH/23 Fix memory leak during multi-message connections using STARTTLS under
559 OpenSSL. Certificate information is loaded for every new TLS startup,
560 and the resources needed to be freed.
561
15ae19f9
JH
562JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
563
e6532c4a
JH
564JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
565 was not propagated.
566
2556b3c6
SA
567JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
568 DATA response info to the (existing) per-recipient response info for
569 the "C=" log element. It can have useful tracking info from the
570 destination system. Patch from Simon Arlott.
571
fc8cd529
JH
572JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
573 length value. Previously this would segfault.
574
71bb51e0
HSHR
575HS/02 Support Avast multiline protoocol, this allows passing flags to
576 newer versions of the scanner.
577
e04bfa34
JH
578JH/28 Ensure that variables possibly set during message acceptance are marked
579 dead before release of memory in the daemon loop. This stops complaints
580 about them when the debug_store option is enabled. Discovered specifically
581 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
582 Do the same for the queue-runner and queue-list loops, for variables set
583 from spool message files. Do the same for the SMTP per-message loop, for
584 certain variables indirectly set in ACL operations.
e04bfa34 585
ecce6d9a
JH
586JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
587 as a multi-recipient message from a mailinglist manager). The coding had
588 an arbitrary cutoff number of characters while checking for more input;
589 enforced by writing a NUL into the buffer. This corrupted long / fast
590 input. The problem was exposed more widely when more pipelineing of SMTP
591 responses was introduced, and one Exim system was feeding another.
592 The symptom is log complaints of SMTP syntax error (NUL chars) on the
593 receiving system, and refused recipients seen by the sending system
594 (propating to people being dropped from mailing lists).
595 Discovered and pinpointed by David Carter.
596
c9cf9ac4
JH
597JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
598 replaced by the ${authresults } expansion.
599
b3b37076
JH
600JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
601
830832c9
HSHR
602HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
603 allows proper process termination in container environments.
604
f64e8b5f
JH
605JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
606 Previously the "final dot" had a newline after it; ensure it is CR,LF.
607
8f0776b5
JH
608JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
609 and "err_perm", deprecated since 4.83 when the RFC-defined words
610 "temperror" and "permerror" were introduced.
611
857eaf37
JH
612JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
613 transport-filters or DKIM-signing. The restriction was lost in the
614 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 615 Extend the restriction to also cover ARC-signing.
857eaf37 616
c85476e9
JH
617JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
618 in defer=pass mode supply a 450 to the initiator. Previously the message
619 would be spooled.
620
405074ad
PP
621PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
622 tls_require_ciphers is used as before.
623
eb445b04
HSHR
624HS/03 Malware Avast: Better match the Avast multiline protocol. Add
625 "pass_unscanned". Only tmpfails from the scanner are written to
626 the paniclog, as they may require admin intervention (permission
627 denied, license issues). Other scanner errors (like decompression
628 bombs) do not cause a paniclog entry.
ad93c40f 629
d342446f
JH
630JH/36 Fix reinitialisation of DKIM logging variable between messages.
631 Previously it was possible to log spurious information in receive log
632 lines.
633
a28050f8
JH
634JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
635 triggered odd behaviour from Outlook Express clients.
636
ddd16464
PP
637PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
638 suffix list.
639
321ef002
JH
640JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
641 since the IETF WG has not yet settled on that versus the original
642 "bare" representation.
643
3203e7ba
JH
644JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
645 Previously the millisecond value corrupted the output.
646 Fix also for syslog_pid=no and log_selector +pid, for which the pid
647 corrupted the output.
648
bbfb5dcd 649
acfc18c3
PP
650Exim version 4.90
651-----------------
652
653JH/01 Rework error string handling in TLS interface so that the caller in
654 more cases is responsible for logging. This permits library-sourced
655 string to be attached to addresses during delivery, and collapses
656 pairs of long lines into single ones.
657
856d1e16
PP
658PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
659 during configuration. Wildcards are allowed and expanded.
660
b9df1829
JH
661JH/02 Rework error string handling in DKIM to pass more info back to callers.
662 This permits better logging.
663
875512a3
JH
664JH/03 Rework the transport continued-connection mechanism: when TLS is active,
665 do not close it down and have the child transport start it up again on
666 the passed-on TCP connection. Instead, proxy the child (and any
667 subsequent ones) for TLS via a unix-domain socket channel. Logging is
668 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 669 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 670
fc3f96af
JH
671JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
672 identical IP addresses on different listening ports. Will also affect
673 "exiwhat" output.
674
98913c8e
BK
675PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
676 add noisy ifdef guards to special-case this sillyness.
677 Patch from Bernd Kuhls.
678
8d909960
JH
679JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
680 than 255 are no longer allowed.
681
7006ee24
JH
682JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
683 Disable the session-cache too, which might reduce our load. Since we
684 currrectly use a new context for every connection, both as server and
685 client, there is no benefit for these.
686 GnuTLS appears to not support tickets server-side by default (we don't
687 call gnutls_session_ticket_enable_server()) but client side is enabled
688 by default on recent versions (3.1.3 +) unless the PFS priority string
689 is used (3.2.4 +).
690
6e411084
PP
691PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
692 <https://reproducible-builds.org/specs/source-date-epoch/>.
693
4c2471ca
JH
694JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
695 the check for any unsuccessful recipients did not notice the limit, and
696 erroneously found still-pending ones.
697
4e910c01
JH
698JH/08 Pipeline CHUNKING command and data together, on kernels that support
699 MSG_MORE. Only in-clear (not on TLS connections).
700
42055a33
JH
701JH/09 Avoid using a temporary file during transport using dkim. Unless a
702 transport-filter is involved we can buffer the headers in memory for
703 creating the signature, and read the spool data file once for the
704 signature and again for transmission.
705
eeb35890
JH
706JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
707 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 708 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 709
b7d3afcf
JH
710JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
711 case where the routing stage had gathered several addresses to send to
712 a host before calling the transport for the first, we previously failed
713 to close down TLS in the old transport process before passing the TCP
714 connection to the new process. The new one sent a STARTTLS command
715 which naturally failed, giving a failed delivery and bloating the retry
716 database. Investigation and fix prototype from Wolfgang Breyha.
717
40525d07
JH
718JH/12 Fix check on SMTP command input synchronisation. Previously there were
719 false-negatives in the check that the sender had not preempted a response
720 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 721 awareness of the SMTP input buffering.
40525d07 722
f33875c3
PP
723PP/04 Add commandline_checks_require_admin option.
724 Exim drops privileges sanely, various checks such as -be aren't a
725 security problem, as long as you trust local users with access to their
726 own account. When invoked by services which pass untrusted data to
727 Exim, this might be an issue. Set this option in main configuration
728 AND make fixes to the calling application, such as using `--` to stop
729 processing options.
730
a5ffa9b4
JH
731JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
732 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
733 responses to those, into a single TLS record each way (this usually means
734 a single packet). As a side issue, smtp_enforce_sync now works on TLS
735 connections.
925ac8e4 736
6600985a
PP
737PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
738 affects you only if you're dancing at the edge of the param size limits.
739 If you are, and this message makes sense to you, then: raise the
740 configured limit or use OpenSSL 1.1. Nothing we can do for older
741 versions.
742
ac4d558b
JH
743JH/14 For the "sock" variant of the malware scanner interface, accept an empty
744 cmdline element to get the documented default one. Previously it was
745 inaccessible.
746
e69636bc
JH
747JH/15 Fix a crash in the smtp transport caused when two hosts in succession
748 are unsuable for non-message-specific reasons - eg. connection timeout,
749 banner-time rejection.
750
a843a57e
JH
751JH/16 Fix logging of delivery remote port, when specified by router, under
752 callout/hold.
753
8e041ae0
PP
754PP/06 Repair manualroute's ability to take options in any order, even if one
755 is the name of a transport.
833c70bc
PP
756 Fixes bug 2140.
757
35a04365
HSHR
758HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
759
4226691b
JH
760JH/17 Change the list-building routines interface to use the expanding-string
761 triplet model, for better allocation and copying behaviour.
762
d185889f
JH
763JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
764 Previously it was constructed the first time a possibly-matching string
765 was met in the configuration file input during startup; now it is done
766 during compilation.
767
0a6c178c
JH
768JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
769 compatible one, to avoid the (poorly documented) possibility of a config
770 file in the working directory redirecting the DB files, possibly correpting
02745400 771 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 772
fae8970d
JH
773JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
774 cache-hot. Previously, although the result was properly cached, the
775 initial verify call returned a defer.
776
ad1a76fe 777JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
778 the main verify for receipient in uncached-mode.
779
ad1a76fe
JH
780JH/22 Retire historical build files to an "unsupported" subdir. These are
781 defined as "ones for which we have no current evidence of testing".
782
135e9496
JH
783JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
784 if present. Previously it was ignored.
785
f2ed27cf
JH
786JH/24 Start using specified-initialisers in C structure init coding. This is
787 a C99 feature (it's 2017, so now considered safe).
788
7eb0e5d2
JH
789JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
790 if was a fixed-sized field and bitmask ops via macros; it is now more
791 extensible.
792
4f9f4be4
793PP/07 GitHub PR 56: Apply MariaDB build fix.
794 Patch provided by Jaroslav Škarvada.
795
dc4de9cc
PP
796PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
797 during Coverity cleanups [4.87 JH/47]
798 Diagnosis and fix provided by Michael Fischer v. Mollard.
799
ea18931d
JH
800JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
801 the right size to place the terminating semicolon on its own folded
802 line, the header hash was calculated to an incorrect value thanks to
803 the (relaxed) space the fold became.
804
0768462d 805HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
806 and confused the parent.
807
848214f7
JH
808JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
809 which could crash as a result. This could lead to undeliverable messages.
810
9e0ed81f
JH
811JH/28 Logging: "next input sent too soon" now shows where input was truncated
812 for log purposes.
813
2540f2f8
JH
814JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
815 matters on fast-turnover and PID-randomising systems, which were getting
816 out-of-order delivery.
817
e5ab0ba9
JH
818JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
819 a possibly-overlapping copy. The symptom was that "Remote host closed
820 connection in response to HELO" was logged instead of the actual 4xx
821 error for the HELO.
822
e99a3a6c
JH
823JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
824 Previously only that bufferd was discarded, resulting in SYMTP command
825 desynchronisation.
826
18067c75
JH
827JH/32 DKIM: when a message has multiple signatures matching an identity given
828 in dkim_verify_signers, run the dkim acl once for each. Previously only
829 one run was done. Bug 2189.
830
72934ba7
JH
831JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
832 "panic the current process" to "deliberately defer". The panic log is
833 still written with the problem list name; the mail and reject logs now
834 get a temp-reject line for the message that was being handled, saying
835 something like "domains check lookup or other defer". The SMTP 451
836 message is still "Temporary local problem".
837
625667b6
JH
838JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
839 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
840 freed. CVE-2017-16943.
841
842HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
843 from SMTP input. Previously it was always done; now only done for DATA
844 and not BDAT commands. CVE-2017-16944.
625667b6 845
d21bf202
JH
846JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
847 to the message (such as an overlong header line). Previously this was
848 not done and we did not exit BDAT mode. Followon from the previous item
849 though a different problem.
850
acfc18c3 851
fd047340 852Exim version 4.89
acfc18c3 853-----------------
4c57a40e 854
9427e879 855JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 856 than -2003 did; needs libidn2 in addition to libidn.
fd047340 857
7b283890
JH
858JH/02 The path option on a pipe transport is now expanded before use.
859
4c57a40e
PP
860PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
861 Patch provided by "Björn", documentation fix added too.
862
5d036699
JH
863JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
864 missing a wire-to-host endian conversion.
865
f4630439
JH
866JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
867 close after a BDAT command line could be taken as a following command,
868 giving a synch failure. Fix by only checking for synch immediately
869 before acknowledging the chunk.
870
f988ce57
JS
871PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
872 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
873 macro. Patches provided by Josh Soref.
874
bd8fbe36
JH
875JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
876 Previously we did not; the RFC seems ambiguous and VRFY is not listed
877 by IANA as a service extension. However, John Klensin suggests that we
878 should.
879
880JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
881 the dkim code may be unix-mode line endings rather than smtp wire-format
882 CRLF, so prepend a CR to any bare LF.
fd047340 883
bd8fbe36 884JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
885 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
886
bd8fbe36
JH
887JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
888 the first were themselves being wrongly included in the feed into dkim
889 processing; with most chunk sizes in use this resulted in an incorrect
890 body hash calculated value.
891
eea19017
JH
892JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
893 DKIM signature block, for verification. Although advised against by
894 standards it is specifically not ruled illegal.
895
44e6651b
JH
896JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
897
898JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
899 missing a body hash (the bh= tag).
900
901JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
902 It seems that HAProxy sends the Proxy Protocol information in clear and
903 only then does a TLS startup, so do the same.
904
905JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
906 TCP connections (such as for Spamd) unless the daemon successfully set
907 Fast Open mode on its listening sockets. This fixes breakage seen on
908 too-old kernels or those not configured for Fast Open, at the cost of
909 requiring both directions being enabled for TFO, and TFO never being used
910 by non-daemon-related Exim processes.
911
912JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
913 endings, at least on the first header line. Try to canonify any that get
914 past that check, despite the cost.
915
b6040544
JH
916JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
917 now limited to an arbitrary five deep, while parsing addresses with the
918 strip_excess_angle_brackets option enabled.
919
f700ea4d
PP
920PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
921 instead leave the unprompted TLS handshake in socket buffer for the
922 TLS library to consume.
923
da88acae
PP
924PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
925
f6ef9370
PP
926PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
927
90341c71
JH
928JH/16 Drop variables when they go out of scope. Memory management drops a whole
929 region in one operation, for speed, and this leaves assigned pointers
930 dangling. Add checks run only under the testsuite which checks all
931 variables at a store-reset and panics on a dangling pointer; add code
932 explicitly nulling out all the variables discovered. Fixes one known
933 bug: a transport crash, where a dangling pointer for $sending_ip_address
934 originally assigned in a verify callout, is re-used.
935
1ec2ab36
PP
936PP/06 Drop '.' from @INC in various Perl scripts.
937
938PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
939
940PP/08 Reduce a number of compilation warnings under clang; building with
941 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
942 should be warning-free.
943
8b2b9480
PP
944JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
945
946HS/01 Fix portability problems introduced by PP/08 for platforms where
947 realloc(NULL) is not equivalent to malloc() [SunOS et al].
948
d953610f
HSHR
949HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
950 chunk. This allows us to accept broken chunked messages. We need a more
951 general solution here.
952
7dc5f827
PP
953PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
954 already-broken messages in the queue.
955
4bb432cb
PP
956JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
957
3b1a84c8
PP
958JH/19 Fix reference counting bug in routing-generated-address tracking.
959
902fbd69 960
8d042305
JH
961Exim version 4.88
962-----------------
4c57a40e 963
9094b84b
JH
964JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
965 supports it and a size is available (ie. the sending peer gave us one).
8d042305 966
03d5892b
JH
967JH/02 The obsolete acl condition "demime" is removed (finally, after ten
968 years of being deprecated). The replacements are the ACLs
969 acl_smtp_mime and acl_not_smtp_mime.
970
4b0fe319
JH
971JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
972 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
973 or even an in-clear connection were permitted. Now, if the host lookup
974 was dnssec and dane was requested then the host is only used if the
975 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
976 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
977 if one fails this test.
978 This means that a poorly-configured remote DNS will make it incommunicado;
979 but it protects against a DNS-interception attack on it.
980
789f8a4f
JH
981JH/04 Bug 1810: make continued-use of an open smtp transport connection
982 non-noisy when a race steals the message being considered.
983
23bb6982 984JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 985 self-signed certificate for inbound TLS connections.
23bb6982 986
0bd1b1ed 987JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 988 in rewrites and routers.
0bd1b1ed 989
20b9a2dc
JH
990JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
991 and logged a warning sing 4.83; now they are a configuration file error.
992
05392bbc
JH
993JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
994 (lacking @domain). Apply the same qualification processing as RCPT.
995
1a6230a3
JH
996JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
997
cfab9d68
JH
998JH/10 Support ${sha256:} applied to a string (as well as the previous
999 certificate).
1000
98c82a3d
JH
1001JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
1002 a cutthrough deliver is pending, as we always want to make a connection.
1003 This also avoids re-routing the message when later placing the cutthrough
1004 connection after a verify cache hit.
1005 Do not update it with the verify result either.
1006
1007JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
1008 when routing results in more than one destination address.
1009
ae8386f0
JH
1010JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
1011 signing (which inhibits the cutthrough capability). Previously only
1012 the presence of an option was tested; now an expansion evaluating as
1013 empty is permissible (obviously it should depend only on data available
1014 when the cutthrough connection is made).
1015
0d9fa8c0
JH
1016JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
1017 the relevant preceding SMTP command did not note the pipelining mode.
1018
3581f321
JH
1019JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
1020 Previously they were not counted.
1021
ef3a1a30
JH
1022JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
1023 as one having no matching records. Previously we deferred the message
1024 that needed the lookup.
1025
4c04137d 1026JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
1027 distinguished as "(=".
1028
1435d4b2
JH
1029JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1030 for missing MX records. Previously it only worked for missing A records.
1031
eea0defe
JB
1032JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1033
1034JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1035 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 1036
4c04137d 1037JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
1038 even for a "none" policy. Patch from Tony Meyer.
1039
1c788856
JH
1040JH/22 Fix continued use of a connection for further deliveries. If a port was
1041 specified by a router, it must also match for the delivery to be
1042 compatible.
1043
e3b1f624
JH
1044JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1045 When one of the recipients of a message was unsuitable for the connection
1046 (has no matching addresses), we lost track of needing to mark it
1047 deferred. As a result mail would be lost.
1048
a57ce043
JH
1049JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1050
f59aaaaa 1051JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
1052 takes up less space and should be simpler to maintain. Merge the ACL
1053 condition decode tables also, with similar effect.
d7bed771 1054
d1f9fb42
JH
1055JH/26 Fix problem with one_time used on a redirect router which returned the
1056 parent address unchanged. A retry would see the parent address marked as
1057 delivered, so not attempt the (identical) child. As a result mail would
1058 be lost.
1059
92b0827a
JH
1060JH/27 Fix a possible security hole, wherein a process operating with the Exim
1061 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1062 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1063 itself :(
1064
ddf1b11a
JH
1065JH/28 Enable {spool,log} filesystem space and inode checks as default.
1066 Main config options check_{log,spool}_{inodes,space} are now
1067 100 inodes, 10MB unless set otherwise in the configuration.
1068
3cc3f762
JH
1069JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1070 Previously it only applied to the main-section connection policy
1071 options.
1072
ae5afa61
JH
1073JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1074
317e40ac
PP
1075PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1076 by me. Added RFC7919 DH primes as an alternative.
1077
8b0fb68e
PP
1078PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1079 are not in the system include path.
1080
ad7fc6eb 1081JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 1082 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
1083 Exim did stdio operations after fclose. This was exposed by a recent
1084 change which nulled out the file handle after the fclose.
ad7fc6eb 1085
ee5b1e28
JH
1086JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1087 signed directly by the cert-signing cert, rather than an intermediate
1088 OCSP-signing cert. This is the model used by LetsEncrypt.
1089
5ddc9771
JH
1090JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1091
8d73599f
JH
1092HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1093 an incoming connection.
1094
446415f5
HSHR
1095HS/02 Bug 1802: Do not half-close the connection after sending a request
1096 to rspamd.
1097
8e53a4fc
HSHR
1098HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1099 fallback to "prime256v1".
8d042305 1100
87cb4a16 1101JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 1102 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
1103
1104
0d9b78be
JH
1105Exim version 4.87
1106-----------------
4c57a40e 1107
82d14d6a
JH
1108JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1109 and 3.4.4 - once the server is enabled to respond to an OCSP request
1110 it does even when not requested, resulting in a stapling non-aware
1111 client dropping the TLS connection.
0d9b78be 1112
6c6d6e48
TF
1113TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1114 support variable-length bit vectors. No functional change.
1115
ac881e27
TF
1116TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1117 The I= interface field on outgoing lines is now after the H= remote
1118 host field, same as incoming lines. There is a separate
1119 outgoing_interface log selector which allows you to disable the
1120 outgoing I= field.
1121
c8899c20
JH
1122JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1123 If not running log_selector +smtp_connection the mainlog would be held
1124 open indefinitely after a "too many connections" event, including to a
1125 deleted file after a log rotate. Leave the per net connection logging
1126 leaving it open for efficiency as that will be quickly detected by the
1127 check on the next write.
1128
f1b81d81
HSHR
1129HS/01 Bug 1671: Fix post transport crash.
1130 Processing the wait-<transport> messages could crash the delivery
1131 process if the message IDs didn't exist for some reason. When
1132 using 'split_spool_directory=yes' the construction of the spool
1133 file name failed already, exposing the same netto behaviour.
1134
f38917cc
JH
1135JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1136 mime_regex ACL conditions.
1137
895fbaf2
JH
1138JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1139 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1140 to HELO, local diagnostic string.
1141
805bb5c3
JH
1142JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1143 log line to debug. Even when configured with a tls authenticator many
1144 client connections are expected to not authenticate in this way, so
1145 an authenticate fail is not an error.
1146
56c2a7be
HSHR
1147HS/02 Add the Exim version string to the process info. This way exiwhat
1148 gives some more detail about the running daemon.
1149
4c04137d 1150JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
1151 matter for fast-change records such as DNSBLs.
1152
6f6dedcc
JH
1153JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1154 retry record, even if constant. There may be multiple transports with
1155 different interface settings and the retry behaviour needs to be kept
1156 distinct.
1157
0f557e90
JH
1158JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1159
1160JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1161
ec0eb1a3
JH
1162JH/10 Bug 840: fix log_defer_output option of pipe transport
1163
41e93589
JH
1164JH/11 Bug 830: use same host for all RCPTS of a message, even under
1165 hosts_randomize. This matters a lot when combined with mua_wrapper.
1166
98b98887 1167JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
1168 ${quote_pgsql:<string>} operator.
1169
98b98887
JH
1170JH/13 Bug 1708: avoid misaligned access in cached lookup.
1171
858e91c2
JH
1172JH/14 Change header file name for freeradius-client. Relevant if compiling
1173 with Radius support; from the Gentoo tree and checked under Fedora.
1174
1175JH/15 Bug 1712: Introduce $prdr_requested flag variable
1176
6ff55e50
JH
1177JH/16 Bug 1714: Permit an empty string as expansion result for transport
1178 option transport_filter, meaning no filtering.
1179
3b957582
JB
1180JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1181
23f3dc67
JH
1182JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1183 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 1184 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
1185 If a server certificate is not supplied (via tls_certificate) an error is
1186 logged, and clients will find TLS connections fail on startup. Presumably
1187 they will retry in-clear.
1188 Packagers of Exim are strongly encouraged to create a server certificate
1189 at installation time.
1190
240c288f
JH
1191HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1192 with the $config_file variable.
1193
5ef5dd52
JB
1194JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1195 in transport context, after the attempt, and per-recipient. The latter type
1196 is per host attempted. The event data is the error message, and the errno
1197 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 1198 and the trailing two digits of the smtp 4xx response.
5ef5dd52 1199
e161710d
GF
1200GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1201 to write to mainlog (or rejectlog, paniclog) in the window between file
1202 creation and permissions/ownership being changed. Particularly affects
1203 installations where exicyclog is run as root, rather than exim user;
1204 result is that the running daemon panics and dies.
1205
a159f203
JH
1206JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1207
7f06582c
JH
1208JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1209 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1210 "pri" and "weight". Note that the previous implicit priority given by the
1211 list order is no longer honoured.
1212
4c04137d 1213JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
1214 for DKIM processing.
1215
f0989ec0
JH
1216JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1217 by defining SUPPORT_SOCKS.
74f150bf 1218
cee5f132
JH
1219JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1220 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
1221 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1222 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 1223
8c5d388a
JH
1224JH/27 Move Internationalisation support from Experimental to mainline, enabled
1225 for a build by defining SUPPORT_I18N
1226
2d8d625b
JH
1227JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1228 of the query string, and make ${quote_redis:} do that quoting.
1229
0cbf2b82
JH
1230JH/29 Move Events support from Experimental to mainline, enabled by default
1231 and removable for a build by defining DISABLE_EVENT.
1232
f2f2c91b
JH
1233JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1234
ce325893
JH
1235JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1236 cached by the daemon.
1237
de78e2d5
JH
1238JH/32 Move Redis support from Experimental to mainline, enabled for a build
1239 by defining LOOKUP_REDIS. The libhiredis library is required.
1240
379ba7d0
JH
1241JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1242 keys are given for lookup.
1243
f444c2c7
JH
1244JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1245 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1246 only supported when built with TLS support. The PolarSSL SHA routines
1247 are still used when the TLS library is too old for convenient support.
f444c2c7 1248
a57b6200
JH
1249JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1250 openssl_options), for security. OpenSSL forces this from version 1.1.0
1251 server-side so match that on older versions.
1252
07c73177 1253JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1254 allocation for $value could be released as the expansion processing
07c73177 1255 concluded, but leaving the global pointer active for it.
fa01e4f8 1256
4f6ae5c3
JH
1257JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1258 and to use the domains and local_parts ACL conditions.
1259
1bc460a6
JH
1260JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1261 incorrectly not doubled on cutthrough transmission, hence seen as a
1262 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1263 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1264 via the normal store-and-forward channel. This could result in duplicates
1265 received - but deduplicating mailstores were liable to retain only the
1266 initial truncated version.
1267
ab9152ff 1268JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1269
67e87fcf
JH
1270JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1271
ab9152ff
JH
1272JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1273 we're in there, support oversigning also; bug 1309.
1274
af483912
JH
1275JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1276
bc3c7bb7 1277HS/04 Add support for keep_environment and add_environment options.
df3def24 1278
13559da6
JH
1279JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1280 either intentional arithmetic overflow during PRNG, or testing config-
1281 induced overflows.
1282
59eaad2b
JH
1283JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1284 delivery resulted in actual delivery. Cancel cutthrough before DATA
1285 stage.
1286
f9334a28
JH
1287JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1288 rejects a recipient: pass the reject to the originator.
1289
dc8091e7
JH
1290JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1291 Many were false-positives and ignorable, but it's worth fixing the
1292 former class.
1293
dfe7d917
JH
1294JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1295 for the new environment-manipulation done at startup. Move the routines
1296 from being local to tls.c to being global via the os.c file.
1297
93cc2d6e
JH
1298JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1299 an extract embedded as result-arg for a map, the first arg for extract
1300 is unavailable so we cannot tell if this is a numbered or keyed
1301 extraction. Accept either.
1302
13559da6 1303
9c695f6d
JH
1304Exim version 4.86
1305-----------------
4c57a40e 1306
9c695f6d
JH
1307JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1308 expanded.
1309
506900af
JH
1310JH/02 The smtp transport option "multi_domain" is now expanded.
1311
ad07e9ad
JH
1312JH/03 The smtp transport now requests PRDR by default, if the server offers
1313 it.
1314
01a4a5c5 1315JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1316 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1317 can be used to disable this per-host. The build option
1318 EXPERIMENTAL_CERTNAMES is withdrawn.
1319
cb1d7830 1320JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1321 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1322 For GnuTLS, only version 3.0.20 or later.
1323
610ff438 1324JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1325 (but not required) by default. The verification status is now logged by
1326 default, for both outbound TLS and client-certificate supplying inbound
1327 TLS connections
610ff438 1328
f926e272
JH
1329JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1330 sites use this now.
1331
50dc7409
JH
1332JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1333 Status Notification (bounce) messages are now MIME format per RFC 3464.
1334 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1335 under the control of the dsn_advertise_hosts option, and routers may
1336 have a dsn_lasthop option.
1337
0f0c8159
JH
1338JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1339 default, modifiable by a malware= option. The list separator for
23763898 1340 the options can now be changed in the usual way. Bug 68.
4e71661f 1341
1ad6489e
JH
1342JH/10 The smtp_receive_timeout main option is now expanded before use.
1343
aeaf5db3
JH
1344JH/11 The incoming_interface log option now also enables logging of the
1345 local interface on delivery outgoing connections.
1346
5032d1cf
JH
1347JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1348 if the interface and destination host and port all match.
1349
7e8360e6
JH
1350JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1351 /defer_ok option.
1352
c5f280e2
AL
1353JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1354 Patch from Andrew Lewis.
1355
fd4d8871 1356JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1357 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1358 modifiers per server. Patch originally by <rommer@active.by>.
1359
1360JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1361 and remote servers. Remote servers can be IPv6 addresses, and
1362 specify a port-range.
fd4d8871 1363
23763898
JH
1364JH/17 Bug 68: The spamd_address main option now supports an optional
1365 timeout value per server.
1366
2ad78978
JH
1367JH/18 Bug 1581: Router and transport options headers_add/remove can
1368 now have the list separator specified.
1369
8a512ed5 1370JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1371 option values.
8a512ed5 1372
82c0c8ea 1373JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1374 under OpenSSL.
1375
cc00f4af
JH
1376JH/21 Support for the A6 type of dns record is withdrawn.
1377
82c0c8ea
JH
1378JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1379 rather than the verbs used.
1380
b980ed83
JH
1381JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1382 from 255 to 1024 chars.
1383
6c9ed72e
JH
1384JH/24 Verification callouts now attempt to use TLS by default.
1385
cfab9d68 1386HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1387 are generic router options now. The defaults didn't change.
50dc7409 1388
f846c8f5
JH
1389JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1390 Original patch from Alexander Shikoff, worked over by JH.
1391
fd4c285c
HSHR
1392HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1393 files if ZCAT_COMMAND is not executable.
1394
4c04137d 1395JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1396
d2a2c69b
JH
1397JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1398
8241d8dd
JH
1399JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1400 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1401 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1402 (and we were inconsistent anyway for A-only vs AAAA+A).
1403
1f12df4d
JH
1404JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1405
1f155f8e
JH
1406JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1407 when evaluating $sender_host_dnssec.
1408
1705dd20
JH
1409JH/31 Check the HELO verification lookup for DNSSEC, adding new
1410 $sender_helo_dnssec variable.
1411
038597d2
PP
1412JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1413
474f71bf
JH
1414JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1415
7137ca4b
JH
1416JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1417
dcb1095c
JH
1418JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1419 documented as working, but never had. Support all but $spam_report.
1420
2f460950
JH
1421JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1422 added for tls authenticator.
1423
2f680c0c
HSHR
1424HS/03 Add perl_taintmode main config option
1425
9c695f6d 1426
e449c3b0
TL
1427Exim version 4.85
1428-----------------
4c57a40e 1429
e449c3b0
TL
1430TL/01 When running the test suite, the README says that variables such as
1431 no_msglog_check are global and can be placed anywhere in a specific
1432 test's script, however it was observed that placement needed to be near
1433 the beginning for it to behave that way. Changed the runtest perl
1434 script to read through the entire script once to detect and set these
1435 variables, reset to the beginning of the script, and then run through
1436 the script parsing/test process like normal.
1437
ac20058f
TL
1438TL/02 The BSD's have an arc4random API. One of the functions to induce
1439 adding randomness was arc4random_stir(), but it has been removed in
1440 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1441 function when detected.
1442
a9b8ec8b
JH
1443JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1444 cause callback expansion.
1445
6286d7c4
TL
1446TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1447 syntax errors in an expansion can be treated as a string instead of
1448 logging or causing an error, due to the internal use of bool_lax
1449 instead of bool when processing it.
1450
0f06b4f2 1451JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1452 server certificates when making smtp deliveries.
1453
be36e572
JH
1454JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1455
ac4ef9bd
JH
1456JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1457
0eb51736
TL
1458TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1459
c713ca4b
TL
1460TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1461 Merged patch from Sebastian Wiedenroth.
e449c3b0 1462
bd21a787
WB
1463JH/05 Fix results-pipe from transport process. Several recipients, combined
1464 with certificate use, exposed issues where response data items split
1465 over buffer boundaries were not parsed properly. This eventually
1466 resulted in duplicates being sent. This issue only became common enough
4c04137d 1467 to notice due to the introduction of connection certificate information,
bd21a787
WB
1468 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1469
8bc732e8
JH
1470JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1471 size buffer was used, resulting in syntax errors when an expansion
1472 exceeded it.
1473
a7fec7a7
JH
1474JH/07 Add support for directories of certificates when compiled with a GnuTLS
1475 version 3.3.6 or later.
1476
4c04137d 1477JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1478 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1479 both become "event_action", the variables become $event_name, $event_data
aec45841 1480 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1481 routers, transports and related events. The tls:cert event is now also
1482 raised for inbound connections, if the main configuration event_action
1483 option is defined.
774ef2d7 1484
eca4debb
TL
1485TL/06 In test suite, disable OCSP for old versions of openssl which contained
1486 early OCSP support, but no stapling (appears to be less than 1.0.0).
1487
8d692470
JH
1488JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1489 server certificate names available under the smtp transport option
1490 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1491 matches.
1492
e9477a08
JH
1493JH/10 Time-related extraction expansions from certificates now use the main
1494 option "timezone" setting for output formatting, and are consistent
1495 between OpenSSL and GnuTLS compilations. Bug 1541.
1496
ad4c5ff9
JH
1497JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1498 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1499
1500JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1501 include certificate info, eximon was claiming there were spoolfile
1502 syntax errors.
1503
3394b36a 1504JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1505
1506JH/14 Log delivery-related information more consistently, using the sequence
1507 "H=<name> [<ip>]" wherever possible.
1508
3394b36a
TL
1509TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1510 are problematic for Debian distribution, omit them from the release
1511 tarball.
1512
ad4c5ff9
JH
1513JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1514
4c04137d 1515JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1516 Bug 1561.
1517
1518JH/17 Fix a null-indirection in certextract expansions when a nondefault
1519 output list separator was used.
1520
8bc732e8 1521
1f0ebb98
TL
1522Exim version 4.84
1523-----------------
09728d20
TL
1524TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1525 checkers that were complaining about end of non-void function with no
1526 return.
1f0ebb98 1527
a612424f 1528JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1529 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1530
1531JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1532
1533TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1534 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1535
1f0ebb98 1536
c0e56233
TF
1537Exim version 4.83
1538-----------------
1539
1540TF/01 Correctly close the server side of TLS when forking for delivery.
1541
1542 When a message was received over SMTP with TLS, Exim failed to clear up
1543 the incoming connection properly after forking off the child process to
1544 deliver the message. In some situations the subsequent outgoing
1545 delivery connection happened to have the same fd number as the incoming
1546 connection previously had. Exim would try to use TLS and fail, logging
1547 a "Bad file descriptor" error.
1548
7245734e
TF
1549TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1550 utilities have not been installed.
1551
fd5dad68
JH
1552JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1553 temporary space as the ACL may create new global variables.
1554
5428a946
TL
1555TL/01 LDAP support uses per connection or global context settings, depending
1556 upon the detected version of the libraries at build time.
1557
a3c86431
TL
1558TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1559 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1560 were a direct connection from the outside internet. PPv2 support was
1561 updated based on HAProxy spec change in May 2014.
a3c86431 1562
aa26e137
JH
1563JH/02 Add ${listextract {number}{list}{success}{fail}}.
1564
5a1b8443
WB
1565TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1566 Properly escape header and check for NULL return.
1567
72c9e342
PP
1568PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1569 not dns_use_dnssec.
1570
76f44207
WB
1571JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1572
770747fd
MFM
1573TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1574 characters in header names, implemented as a verify condition.
1575 Contributed by Michael Fischer v. Mollard.
1576
8ddef691 1577TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1578 results permerror and temperror. Previous values are deprecated but
1579 still accepted. In a future release, err_perm and err_temp will be
1580 completely removed, which will be a backward incompatibility if the
1581 ACL tests for either of these two old results. Patch contributed by
8ddef691 1582 user bes-internal on the mailing list.
c0e56233 1583
b9c2e32f
AR
1584JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1585
e45a1c37
JH
1586JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1587 selectors, in both main and reject logs.
1588
67d81c10
JH
1589JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1590 failed delivery.
1591
b1f8e4f8
JH
1592JH/07 Add malware type "sock" for talking to simple daemon.
1593
511a6c14 1594JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1595
1596JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1597 routers/transports under cutthrough routing.
214042d2 1598
51c7471d
JH
1599JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1600 numbers. Touch up "bool" conditional to keep the same definition.
1601
3695be34
TL
1602TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1603
1e06383a
TL
1604JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1605
76146973
JH
1606JH/12 Expand items in router/transport headers_add or headers_remove lists
1607 individually rather than the list as a whole. Bug 1452.
1608
1609 Required for reasonable handling of multiple headers_ options when
1610 they may be empty; requires that headers_remove items with embedded
1611 colons must have them doubled (or the list-separator changed).
1612
8c8b8274
TL
1613TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1614 view the policy declared in the DMARC record. Currently, $dmarc_status
1615 is a combined value of both the record presence and the result of the
1616 analysis.
b1f8e4f8 1617
35aba663
JH
1618JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1619
8c51eead 1620JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1621 dnslookup router and the smtp transport (applying to the forward
1622 lookup).
8c51eead 1623
deae092e
HS
1624TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1625 of ldap servers used for a specific lookup. Patch provided by Heiko
1626 Schlichting.
35aba663 1627
fd3b6a4a 1628JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1629 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1630
8d91c6dc
LT
1631TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1632 Patch submitted by Lars Timman.
1633
2b4a568d
JH
1634JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1635
d2af03f4
HS
1636TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1637 Requires trusted mode and valid format message id, aborts otherwise.
1638 Patch contributed by Heiko Schlichting.
1639
9d1c15ef
JH
1640JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1641 certextract with support for various fields. Bug 1358.
1642
44662487
JH
1643JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1644 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1645 hosts_request_ocsp.
1646
ed3bba5f 1647JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1648 operate on certificate variables to give certificate fingerprints
9ef9101c 1649 Also new ${sha256:cert_variable}.
44662487 1650
8ccd00b1
JH
1651JH/23 The PRDR feature is moved from being Experimental into the mainline.
1652
8ded8589
TL
1653TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1654 Christian Aistleitner.
1655
f2de3a33
JH
1656JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1657
6eb02f88
TL
1658TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1659 file. Patch from Wolfgang Breyha.
1660
00bff6f6
JH
1661JH/25 Expand the coverage of the delivery $host and $host_address to
1662 client authenticators run in verify callout. Bug 1476.
1663
071c51f7
JH
1664JH/26 Port service names are now accepted for tls_on_connect_ports, to
1665 align with daemon_smtp_ports. Bug 72.
1666
a6d4c44e
TF
1667TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1668 support and error reporting did not work properly.
1669
3ae173e7
ACK
1670TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1671 and is readable. Patch from Andrew Colin Kissa.
1672
c13d09b8
TL
1673TL/14 Enhance documentation of ${run expansion and how it parses the
1674 commandline after expansion, particularly in the case when an
1675 unquoted variable expansion results in an empty value.
1676
0df4ab80
JH
1677JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1678
66be95e0
PP
1679PP/02 Fix internal collision of T_APL on systems which support RFC3123
1680 by renaming away from it. Addresses GH issue 15, reported by
1681 Jasper Wallace.
1682
1bd0d12b
JH
1683JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1684
0de7239e
TL
1685TL/15 SECURITY: prevent double expansion in math comparison functions
1686 (can expand unsanitized data). Not remotely exploitable.
1687 CVE-2014-2972
1688
fd3b6a4a 1689
2c422e6f 1690Exim version 4.82
98a90c36
PP
1691-----------------
1692
1693PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1694
12f69989
PP
1695PP/02 Make -n do something, by making it not do something.
1696 When combined with -bP, the name of an option is not output.
1697
54c90be1
PP
1698PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1699 by GnuTLS.
1700
1f4a55da
PP
1701PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1702 $sender_host_name and config options to manage this, and basic check
1703 routines.
1704
13363eba 1705PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1706
66645890 1707PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1708 (Only plugin which currently uses this is kerberos4, which nobody should
1709 be using, but we should make it available and other future plugins might
1710 conceivably use it, even though it would break NAT; stuff *should* be
1711 using channel bindings instead).
66645890 1712
a3fb9793 1713PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1714 name; added for Sendmail compatibility; requires admin caller.
1715 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1716 just ignore it); requires trusted caller.
a3fb9793 1717 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1718 Bugzilla 1117.
a3fb9793 1719
d27f98fe 1720TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1721
6822b909
TL
1722TL/02 Add +smtp_confirmation as a default logging option.
1723
e7568d51
TL
1724TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1725 Patch by Magnus Holmgren from 2007-02-20.
1726
ae0e32ee 1727TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1728 Bugzilla 1283 - Spec typo.
97f42f10 1729 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1730
1731TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1732
e2658fff
TL
1733TL/06 Add Experimental DMARC support using libopendmarc libraries.
1734
83712b39
TL
1735TL/07 Fix an out of order global option causing a segfault. Reported to dev
1736 mailing list by by Dmitry Isaikin.
1737
976b7e9f
JH
1738JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1739
be4a1376
JH
1740JH/02 Support "G" suffix to numbers in ${if comparisons.
1741
ec4b68e5
PP
1742PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1743
d7148a07
NM
1744NM/01 Bugzilla 1197 - Spec typo
1745 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1746
585121e2 1747JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1748
2519e60d
TL
1749PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1750 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1751 function.
a5f239e4 1752
13d08c90
PP
1753PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1754 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1755
bef3ea7f
JH
1756JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1757 "acl {{name}{arg}...}", and optional args on acl condition
1758 "acl = name arg..."
a5f239e4 1759
846726c5
JH
1760JH/05 Permit multiple router/transport headers_add/remove lines.
1761
3a796370
JH
1762JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1763
ea722490 1764JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1765 Performance patch from Paul Fisher. Bugzilla 1262.
1766
b1b05573
JH
1767JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1768 Bugzilla 884.
1769
362145b5
JH
1770JH/09 Add $headers_added variable, with content from use of ACL modifier
1771 add_header (but not yet added to the message). Bugzilla 199.
1772
3c0a92dc
JH
1773JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1774 Pulled from Bugzilla 817 by Wolfgang Breyha.
1775
6d7c6175
PP
1776PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1777 CVE-2012-5671
e78e6ecf 1778 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1779
6f123593
JH
1780JH/11 Add A= logging on delivery lines, and a client_set_id option on
1781 authenticators.
1782
c8e2fc1e
JH
1783JH/12 Add optional authenticated_sender logging to A= and a log_selector
1784 for control.
1785
005ac57f
PP
1786PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1787
3f1df0e3
PP
1788PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1789 advertise SMTP AUTH mechanism to us, instead of a generic
1790 protocol violation error. Also, make Exim more robust to bad
1791 data from the Dovecot auth socket.
1792
67bd1ab3
TF
1793TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1794
1795 When a queue runner is handling a message, Exim first routes the
1796 recipient addresses, during which it prunes them based on the retry
1797 hints database. After that it attempts to deliver the message to
1798 any remaining recipients. It then updates the hints database using
1799 the retry rules.
1800
1801 So if a recipient address works intermittently, it can get repeatedly
1802 deferred at routing time. The retry hints record remains fresh so the
1803 address never reaches the final cutoff time.
1804
1805 This is a fairly common occurrence when a user is bumping up against
1806 their storage quota. Exim had some logic in its local delivery code
1807 to deal with this. However it did not apply to per-recipient defers
1808 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1809
1ddeb334
TF
1810 This change adds a proper retry rule check during routing so that the
1811 final cutoff time is checked against the message's age. We only do
1812 this check if there is an address retry record and there is not a
1813 domain retry record; this implies that previous attempts to handle
1814 the address had the retry_use_local_parts option turned on. We use
1815 this as an approximation for the destination being like a local
1816 delivery, as in LMTP.
67bd1ab3
TF
1817
1818 I suspect this new check makes the old local delivery cutoff check
1819 redundant, but I have not verified this so I left the code in place.
1820
326cdc37
TF
1821TF/02 Correct gecos expansion when From: is a prefix of the username.
1822
1823 Test 0254 submits a message to Exim with the header
1824
1825 Resent-From: f
1826
1827 When I ran the test suite under the user fanf2, Exim expanded
1828 the header to contain my full name, whereas it should have added
1829 a Resent-Sender: header. It erroneously treats any prefix of the
1830 username as equal to the username.
1831
1832 This change corrects that bug.
1833
f62514b3
GF
1834GF/01 DCC debug and logging tidyup
1835 Error conditions log to paniclog rather than rejectlog.
1836 Debug lines prefixed by "DCC: " to remove any ambiguity.
1837
eb505532
TF
1838TF/03 Avoid unnecessary rebuilds of lookup-related code.
1839
14c7b357
PP
1840PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1841 Bug spotted by Jeremy Harris; was flawed since initial commit.
1842 Would have resulted in OCSP responses post-SNI triggering an Exim
1843 NULL dereference and crash.
1844
94eaf700
PP
1845JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1846
6f5a440a
PP
1847PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1848 Bug detection, analysis and fix by Samuel Thibault.
1849 Bugzilla 1331, Debian bug #698092.
1850
514ee161
SC
1851SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1852
fd98a5c6
JH
1853JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1854 Server implementation by Todd Lyons, client by JH.
1855 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1856 config variable "prdr_enable" controls whether the server
1857 advertises the facility. If the client requests PRDR a new
1858 acl_data_smtp_prdr ACL is called once for each recipient, after
1859 the body content is received and before the acl_smtp_data ACL.
4c04137d 1860 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
1861 on the smtp transport, and the server advertisement.
1862 Default client logging of deliveries and rejections involving
1863 PRDR are flagged with the string "PRDR".
1864
035c7f1e
PP
1865PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1866 fclose(). Diagnosis by Todd Lyons.
1867
ff284120
PP
1868PP/17 Update configure.default to handle IPv6 localhost better.
1869 Patch by Alain Williams (plus minor tweaks).
1870 Bugzilla 880.
1871
26e72755
PP
1872PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1873 This is now consistent with GnuTLS, and is now documented: the
1874 previous undocumented portable approach to treating the option as
1875 unset was to force an expansion failure. That still works, and
1876 an empty string is now equivalent.
1877
0fbd9bff
PP
1878PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1879 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1880 not performing validation itself.
1881
700d22f3
PP
1882PP/20 Added force_command boolean option to pipe transport.
1883 Patch from Nick Koston, of cPanel Inc.
1884
fcc8e047
JH
1885JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1886 Bugzilla 321, 823.
1887
4c04137d 1888TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 1889
8c020188
PP
1890PP/21 Fix eximon continuous updating with timestamped log-files.
1891 Broken in a format-string cleanup in 4.80, missed when I repaired the
1892 other false fix of the same issue.
1893 Report and fix from Heiko Schlichting.
1894 Bugzilla 1363.
1895
d13cdd30
PP
1896PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1897 Report from Prashanth Katuri.
1898
e2fbf4a2
PP
1899PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1900 It's SecureTransport, so affects any MacOS clients which use the
1901 system-integrated TLS libraries, including email clients.
1902
f4c1088b
PP
1903PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1904 using a MIME ACL for non-SMTP local injection.
1905 Report and assistance in diagnosis by Warren Baker.
1906
c5c2182f
PP
1907TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1908
73431ca9
JH
1909JH/16 Fix comparisons for 64b. Bugzilla 1385.
1910
2d07a215
TL
1911TL/09 Add expansion variable $authenticated_fail_id to keep track of
1912 last id that failed so it may be referenced in subsequent ACL's.
1913
a30a8861
TL
1914TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1915 Alexander Miroch.
1916
33382dd9
TL
1917TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1918 ldap library initialization, allowing self-signed CA's to be
1919 used. Also properly sets require_cert option later in code by
1920 using NULL (global ldap config) instead of ldap handle (per
1921 session). Bug diagnosis and testing by alxgomz.
6d7c6175 1922
046172e6
TL
1923TL/12 Enhanced documentation in the ratelimit.pl script provided in
1924 the src/util/ subdirectory.
1925
581d7bee 1926TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 1927 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
1928 EXPERIMENTAL_TPDA.
1929
1930TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1931 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1932 redis_servers = needs to be configured which will be used by the redis
1933 lookup. Patch from Warren Baker, of The Packet Hub.
1934
237b2cf2
TL
1935TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1936
9fc5a352
TL
1937TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1938 hostname or reverse DNS when processing a host list. Used suggestions
1939 from multiple comments on this bug.
1a7b746d 1940
b10e4ec2
TL
1941TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1942
e2cebd74
TL
1943TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1944 Missed a few lines, added it to make the runtest require no keyboard
1945 interaction.
1946
1947TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1948 contains upper case chars. Make router use caseful_local_part.
1949
2519e60d
TL
1950TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1951 support when GnuTLS has been built with p11-kit.
1952
e78e6ecf 1953
4263f395
PP
1954Exim version 4.80.1
1955-------------------
1956
1957PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1958 CVE-2012-5671
2c422e6f 1959 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 1960
ea722490 1961
b1770b6e 1962Exim version 4.80
0599f9cf
PP
1963-----------------
1964
1965PP/01 Handle short writes when writing local log-files.
1966 In practice, only affects FreeBSD (8 onwards).
1967 Bugzilla 1053, with thanks to Dmitry Isaikin.
1968
23c7e742
NM
1969NM/01 Bugzilla 949 - Documentation tweak
1970
b322aac8
NM
1971NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1972 improved.
1973
4a891427
NM
1974NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1975
c1e794ba 1976PP/02 Implemented gsasl authenticator.
b322aac8 1977
97753960
PP
1978PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1979
1980PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1981 `pkg-config foo` for cflags/libs.
1982
df6303fa
PP
1983PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1984 with rest of GSASL and with heimdal_gssapi.
1985
7e6a8985
PP
1986PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1987 `pkg-config foo` for cflags/libs for the TLS implementation.
1988
f1e05cc7 1989PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
1990 properties get this fed in as external SSF. A number of robustness
1991 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 1992
4c287009
PP
1993PP/08 cyrus_sasl server now expands the server_realm option.
1994
b98bb9ac
PP
1995PP/09 Bugzilla 1214 - Log authentication information in reject log.
1996 Patch by Jeremy Harris.
1997
4a6a987a
PP
1998PP/10 Added dbmjz lookup type.
1999
c45dd180 2000PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 2001
7db8d074
PP
2002PP/12 MAIL args handles TAB as well as SP, for better interop with
2003 non-compliant senders.
2004 Analysis and variant patch by Todd Lyons.
2005
eae0036b 2006NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 2007 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
2008 Patch from Dirk Mueller <dmueller@suse.com>
2009
dec5017e
PP
2010PP/13 tls_peerdn now print-escaped for spool files.
2011 Observed some $tls_peerdn in wild which contained \n, which resulted
2012 in spool file corruption.
2013
c80c5570
PP
2014PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
2015 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
2016 or write after TLS renegotiation, which otherwise led to messages
2017 "Got SSL error 2".
2018
076b11e2
PP
2019TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
2020 as a tracking header (ie: a signed header comes before the signature).
2021 Patch from Wolfgang Breyha.
2022
5407bfff
JH
2023JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2024 comma-sep list; embedded commas doubled.
2025
9e45c72b
PP
2026JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2027
e74376d8
PP
2028PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2029 diagnostics.
2030 Report and patch from Dmitry Banschikov.
2031
4c04137d 2032PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
2033 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2034 failures. We appear to now support TLS1.1+ with Exim.
2035
7be682ca
PP
2036PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2037 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
2038 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2039 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 2040
ef840681
PP
2041PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2042 NULL dereference. Report and patch from Alun Jones.
2043
5bfb4cdf
PP
2044PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2045 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2046 Not seeing resolver debug output on NetBSD, but suspect this is a
2047 resolver implementation change.
2048
c6e95d22
PP
2049PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2050 Left warnings. Added "eximon gdb" invocation mode.
2051
9cbad13b
PP
2052PP/21 Defaulting "accept_8bitmime" to true, not false.
2053
9ee44efb
PP
2054PP/22 Added -bw for inetd wait mode support.
2055
6a6084f8
PP
2056PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2057 locate the relevant includes and libraries. Made this the default.
2058
12dd53c7
PP
2059PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2060 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2061
9e45c72b 2062JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
2063 This may cause build issues on older platforms.
2064
17c76198
PP
2065PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2066 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2067 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2068 Added SNI support via GnuTLS too.
af3498d6 2069 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 2070
53947857 2071PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 2072
eae0036b 2073PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
2074 Applied second patch from Janne, implementing suggestion to default
2075 multiple-strings-in-record handling to match SPF spec.
eae0036b 2076
9e45c72b 2077JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 2078
7390e768
PP
2079PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2080 read-only, out of scope).
2081 Patch from Wolfgang Breyha, report from Stuart Northfield.
2082
08488c86
PP
2083PP/29 Fix three issues highlighted by clang analyser static analysis.
2084 Only crash-plausible issue would require the Cambridge-specific
2085 iplookup router and a misconfiguration.
2086 Report from Marcin Mirosław.
2087
6475bd82
PP
2088PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2089
81f91683
PP
2090PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2091 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2092 As part of this, removing so much warning spew let me fix some minor
2093 real issues in debug logging.
2094
5779e6aa
PP
2095PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2096 assignment on my part. Fixed.
2097
3375e053
PP
2098PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2099 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2100 Janne Snabb (who went above and beyond: thank you).
2101
2102PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2103 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
2104 relatively easy to get wrong. Should also expose TLS library linkage
2105 problems.
3375e053 2106
9d26b8c0
PP
2107PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2108 64-bit ${eval} (JH/03).
2109
57eb9e91 2110PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
2111 GNU libc to support some of the 64-bit stuff, should not lead to
2112 conflicts. Defined before os.h is pulled in, so if a given platform
2113 needs to override this, it can.
2114
16880d1a
PP
2115PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2116 protection layer was required, which is not implemented.
2117 Bugzilla 1254, patch from Wolfgang Breyha.
2118
a799883d
PP
2119PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2120 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2121 tls_dhparam take prime identifiers. Also unbreak combination of
2122 OpenSSL+DH_params+TLSSNI.
2123
3ecab157 2124PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 2125
0599f9cf 2126
867fcbf5
PP
2127Exim version 4.77
2128-----------------
2129
2130PP/01 Solaris build fix for Oracle's LDAP libraries.
2131 Bugzilla 1109, patch from Stephen Usher.
2132
f1a29782
TF
2133TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2134
ab42bd23
TK
2135TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2136 whitespace trailer
867fcbf5 2137
0ca0cf52
TF
2138TF/02 Fix a couple more cases where we did not log the error message
2139 when unlink() failed. See also change 4.74-TF/03.
2140
921b12ca
TF
2141TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2142 lock up or crash if it happened to be inside a call to libc when it
2143 got a SIGUSR1 from exiwhat.
2144
2145 The SIGUSR1 handler appends the current process status to the process
2146 log which is later printed by exiwhat. It used to use the general
2147 purpose logging code to do this, but several functions it calls are
2148 not safe for signals.
2149
2150 The new output code in the SIGUSR1 handler is specific to the process
2151 log, and simple enough that it's easy to inspect for signal safety.
2152 Removing some special cases also simplifies the general logging code.
2153 Removing the spurious timestamps from the process log simplifies
2154 exiwhat.
2155
c99ce5c9
TF
2156TF/04 Improved ratelimit ACL condition.
2157
2158 The /noupdate option has been deprecated in favour of /readonly which
2159 has clearer semantics. The /leaky, /strict, and /readonly update modes
2160 are mutually exclusive. The update mode is no longer included in the
2161 database key; it just determines when the database is updated. (This
4c04137d 2162 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
2163
2164 Exim now checks that the per_* options are used with an update mode that
2165 makes sense for the current ACL. For example, when Exim is processing a
2166 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2167 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2168 must specify per_mail/readonly. If you omit the update mode it defaults to
2169 /leaky where that makes sense (as before) or /readonly where required.
2170
2171 The /noupdate option is now undocumented but still supported for
2172 backwards compatibility. It is equivalent to /readonly except that in
2173 ACLs where /readonly is required you may specify /leaky/noupdate or
2174 /strict/noupdate which are treated the same as /readonly.
2175
2176 A useful new feature is the /count= option. This is a generalization
2177 of the per_byte option, so that you can measure the throughput of other
2178 aggregate values. For example, the per_byte option is now equivalent
2179 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2180
2181 The per_rcpt option has been generalized using the /count= mechanism
2182 (though it's more complicated than the per_byte equivalence). When it is
2183 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2184 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2185 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2186 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2187 Note that using per_rcpt with a non-readonly update mode in more than
2188 one ACL will cause the recipients to be double-counted. (The per_mail
2189 and per_byte options don't have this problem.)
2190
2191 The handling of very low rates has changed slightly. If the computed rate
2192 is less than the event's count (usually one) then this event is the first
2193 after a long gap. In this case the rate is set to the same as this event's
2194 count, so that the first message of a spam run is counted properly.
2195
2196 The major new feature is a mechanism for counting the rate of unique
2197 events. The new per_addr option counts the number of different
2198 recipients that someone has sent messages to in the last time period. It
2199 behaves like per_rcpt if all the recipient addresses are different, but
2200 duplicate recipient addresses do not increase the measured rate. Like
2201 the /count= option this is a general mechanism, so the per_addr option
2202 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2203 example, measure the rate that a client uses different sender addresses
2204 with the options per_mail/unique=$sender_address. There are further
2205 details in the main documentation.
2206
3634fc25
TF
2207TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2208
792e8a19
TF
2209TF/06 Removed a few PCRE remnants.
2210
5901f0ab
TF
2211TF/07 Automatically extract Exim's version number from tags in the git
2212 repository when doing development or release builds.
2213
7f2a2a43
PP
2214PP/02 Raise smtp_cmd_buffer_size to 16kB.
2215 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 2216
061b7ebd
PP
2217PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2218 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2219 Bugzilla 97.
2220
e12f8c32
PP
2221PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2222
9e949f00 2223PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
2224 Bugzilla 1078. Patch from John Horne.
2225
2226PP/06 Stop make process more reliably on build failure.
2227 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 2228
555ae6af 2229PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
2230 Bugzilla 1089. Patch from Heiko Schlittermann.
2231
2232PP/08 Handle ${run} returning more data than OS pipe buffer size.
2233 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 2234
6f7fe114
PP
2235PP/09 Handle IPv6 addresses with SPF.
2236 Bugzilla 860. Patch from Wolfgang Breyha.
2237
c566dd90
PP
2238PP/10 GnuTLS: support TLS 1.2 & 1.1.
2239 Bugzilla 1156.
89f897c3
PP
2240 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2241 Bugzilla 1095.
c566dd90 2242
d6cc7c78 2243PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2244 New compile-time build option, EXPAND_LISTMATCH_RHS.
2245 New expansion conditions, "inlist", "inlisti".
2246
0d0e4455
PP
2247PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2248
3399bb60 2249PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2250
2251PP/14 fix log_write() format string regression from TF/03.
2252 Bugzilla 1152. Patch from Dmitry Isaikin.
2253
0ca0cf52 2254
10906672
PP
2255Exim version 4.76
2256-----------------
2257
2258PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2259
754a0503
PP
2260PP/02 Harmonised TLS library version reporting; only show if debugging.
2261 Layout now matches that introduced for other libraries in 4.74 PP/03.
2262
c0c7b2da
PP
2263PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2264
e97d1f08
PP
2265PP/04 New "dns_use_edns0" global option.
2266
084c1d8c
PP
2267PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2268 Bugzilla 1098.
2269
4e7ee012
PP
2270PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2271 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2272
c8d52a00
PP
2273TK/01 Updated PolarSSL code to 0.14.2.
2274 Bugzilla 1097. Patch from Andreas Metzler.
2275
54e7ce4a
PP
2276PP/07 Catch divide-by-zero in ${eval:...}.
2277 Fixes bugzilla 1102.
2278
5ee6f336
PP
2279PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2280 Bugzilla 1104.
2281
c8d52a00 2282TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2283 format-string attack -- SECURITY: remote arbitrary code execution.
2284
2285TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2286 time unintentionally subject to list matching rules, letting the header
2287 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2288 arbitrary string expansion). This allowed for information disclosure.
2289
2290PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2291 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2292
10906672 2293
aa097c4c
NM
2294Exim version 4.75
2295-----------------
2296
4c04137d 2297NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2298 Bugzilla 1073
2299
7f3d9eff
TF
2300TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2301 This fixes portability to compilers other than gcc, notably
2302 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2303
159f52d2
TF
2304TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2305 makefiles for portability to HP-UX and POSIX correctness.
2306
0cc9542a
PP
2307PP/01 Permit LOOKUP_foo enabling on the make command-line.
2308 Also via indented variable definition in the Makefile.
2309 (Debugging by Oliver Heesakkers).
2310
f7274286
PP
2311PP/02 Restore caching of spamd results with expanded spamd_address.
2312 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2313
7b797365
PP
2314PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2315 Improves build reliability. Fix from: Frank Elsner
2316
caacae52
NM
2317NM/02 Fix wide character breakage in the rfc2047 coding
2318 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2319
09dcaba9
NM
2320NM/03 Allow underscore in dnslist lookups
2321 Fixes bug 1026. Patch from Graeme Fowler
2322
bc19a55b
PP
2323PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2324 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2325
bd4c9759
NM
2326NM/04 Fixed exiqgrep to cope with mailq missing size issue
2327 Fixes bug 943.
2328
b72aab72
PP
2329PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2330 is logged, to avoid truncation. Patch from John Horne.
2331
2fe76745
PP
2332PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2333 Patch from Jakob Hirsch.
2334
76aa570c
PP
2335PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2336 SQL string expansion failure details.
2337 Patch from Andrey Oktyabrski.
2338
f1e5fef5
PP
2339PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2340 Patch from Simon Arlott.
2341
4d805ee9
PP
2342PP/09 New lookups functionality failed to compile on old gcc which rejects
2343 extern declarations in function scope.
2344 Patch from Oliver Fleischmann
2345
cd59ab18
PP
2346PP/10 Use sig_atomic_t for flags set from signal handlers.
2347 Check getgroups() return and improve debugging.
2348 Fixed developed for diagnosis in bug 927 (which turned out to be
2349 a kernel bug).
2350
332f5cf3
PP
2351PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2352 Patch from Mark Zealey.
2353
29cfeb94
PP
2354PP/12 Bugzilla 1056: Improved spamd server selection.
2355 Patch from Mark Zealey.
2356
660242ad
PP
2357PP/13 Bugzilla 1086: Deal with maildir quota file races.
2358 Based on patch from Heiko Schlittermann.
2359
bc4bc4c5
PP
2360PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2361 Patch from Uwe Doering, sign-off by Michael Haardt.
2362
2e64baa9
NM
2363NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2364 variable declaration deep within a block. Bug and patch from
2365 Dennis Davis.
2366
4c04137d 2367PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2368
6bac1a9a
PP
2369PP/16 Make DISABLE_DKIM build knob functional.
2370
552193f0
NM
2371NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2372 Patch by Simon Arlott
baeee2c1 2373
1b587e48
TF
2374TF/03 Fix valgrind.h portability to C89 compilers that do not support
2375 variable argument macros. Our copy now differs from upstream.
2376
aa097c4c 2377
8c07b69f
TF
2378Exim version 4.74
2379-----------------
2380
2381TF/01 Failure to get a lock on a hints database can have serious
2382 consequences so log it to the panic log.
2383
c0ea85ab
TF
2384TF/02 Log LMTP confirmation messages in the same way as SMTP,
2385 controlled using the smtp_confirmation log selector.
2386
0761d44e
TF
2387TF/03 Include the error message when we fail to unlink a spool file.
2388
0a349494
PP
2389DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2390 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2391 for maintaining out-of-tree patches for some time.
2392
2393PP/01 Bugzilla 139: Documentation and portability issues.
2394 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2395 Handle per-OS dynamic-module compilation flags.
2396
fea24b2e
PP
2397PP/02 Let /dev/null have normal permissions.
2398 The 4.73 fixes were a little too stringent and complained about the
2399 permissions on /dev/null. Exempt it from some checks.
2400 Reported by Andreas M. Kirchwitz.
2401
6545de78
PP
2402PP/03 Report version information for many libraries, including
2403 Exim version information for dynamically loaded libraries. Created
2404 version.h, now support a version extension string for distributors
2405 who patch heavily. Dynamic module ABI change.
2406
1670ef10
PP
2407PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2408 privilege escalation vulnerability whereby the Exim run-time user
2409 can cause root to append content of the attacker's choosing to
2410 arbitrary files.
2411
c0886197
PP
2412PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2413 (Wolfgang Breyha)
2414
b7487bce
PP
2415PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2416 If dropping privileges for untrusted macros, we disabled normal logging
2417 on the basis that it would fail; for the Exim run-time user, this is not
2418 the case, and it resulted in successful deliveries going unlogged.
2419 Fixed. Reported by Andreas Metzler.
2420
8c07b69f 2421
97fd1e48 2422Exim version 4.73
ed7f7860 2423-----------------
97fd1e48
PP
2424
2425PP/01 Date: & Message-Id: revert to normally being appended to a message,
2426 only prepend for the Resent-* case. Fixes regression introduced in
2427 Exim 4.70 by NM/22 for Bugzilla 607.
2428
6901c596
PP
2429PP/02 Include check_rfc2047_length in configure.default because we're seeing
2430 increasing numbers of administrators be bitten by this.
2431
a8c8d6b5
JJ
2432JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2433
77bb000f
PP
2434PP/03 Bugzilla 994: added openssl_options main configuration option.
2435
a29e5231
PP
2436PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2437
ec5a0394 2438PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2439
55c75993
PP
2440PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2441
453a6645 2442PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2443 without a peer certificate, leading to a segfault because of an
2444 assumption that peers always have certificates. Be a little more
453a6645
PP
2445 paranoid. Problem reported by Martin Tscholak.
2446
8544e77a
PP
2447PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2448 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2449 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2450 CL also introduces -bmalware, various -d+acl logging additions and
2451 more caution in buffer sizes.
8544e77a 2452
83e029d5
PP
2453PP/09 Implemented reverse_ip expansion operator.
2454
ed7f7860
PP
2455PP/10 Bugzilla 937: provide a "debug" ACL control.
2456
7d9f747b
PP
2457PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2458
4b2241d2
PP
2459PP/12 Bugzilla 973: Implement --version.
2460
10385c15
PP
2461PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2462
dbc4b90d
PP
2463PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2464
532be449
PP
2465PP/15 Bugzilla 816: support multiple condition rules on Routers.
2466
6a8de854 2467PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2468 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2469 ignore trailing whitespace.
6a8de854 2470
5dc43717
JJ
2471JJ/02 prevent non-panic DKIM error from being sent to paniclog
2472
2473JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2474 "exim" to be used
55c75993 2475
3346ab01
PP
2476PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2477 Notification from Dr Andrew Aitchison.
2478
491fab4c
PP
2479PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2480 ExtendedDetectionInfo response format.
2481 Notification from John Horne.
2482
13eb9497
PP
2483PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2484 compatible.
2485
2486PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2487 XSL and documented dependency on system catalogs, with examples of how
2488 it normally works.
2489
7f36d675
DW
2490DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2491 access.
2492
c1d94452
DW
2493DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2494 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2495 configuration file which is writeable by the Exim user or group.
2496
e2f5dc15
DW
2497DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2498 of configuration files to cover files specified with the -C option if
2499 they are going to be used with root privileges, not just the default
2500 configuration file.
2501
cd25e41d
DW
2502DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2503 option (effectively making it always true).
2504
261dc43e
DW
2505DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2506 files to be used while preserving root privileges.
2507
fa32850b
DW
2508DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2509 that rogue child processes cannot use them.
2510
79d4bc3d
PP
2511PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2512 run-time user, instead of root.
2513
43236f35 2514PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2515 Exim run-time user without dropping privileges.
2516
fb08281f
DW
2517DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2518 result string, instead of calling string_vformat() twice with the same
2519 arguments.
3346ab01 2520
74935b98
DW
2521DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2522 for other users. Others should always drop root privileges if they use
2523 -C on the command line, even for a whitelisted configure file.
2524
90b6341f
DW
2525DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2526
57730b52
ML
2527NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2528
66581d1e 2529
465e92cf
JJ
2530Exim version 4.72
2531-----------------
2532
453a6645
PP
2533JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2534 $data_path, and $header_path variables; fixed documentation bugs and
2535 typos
465e92cf 2536
453a6645
PP
2537JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2538 exipick to access non-standard spools, including the "frozen" queue
2539 (Finput)
edae0343 2540
9bd3e22c
NM
2541NM/01 Bugzilla 965: Support mysql stored procedures.
2542 Patch from Alain Williams
2543
bb576ff7
NM
2544NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2545
5a1a5845
NM
2546NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2547 Patch from Andreas Metzler
2548
981a9fad
NM
2549NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2550 Patch from Kirill Miazine
2551
7fc497ee
NM
2552NM/05 Bugzilla 671: Added umask to procmail example.
2553
1a41defa
JJ
2554JJ/03 installed exipick 20100323.0, fixing doc bug
2555
a466095c 2556NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2557 directory. Notification and patch from Dan Rosenberg.
a466095c 2558
94a6bd0b
NM
2559TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2560
2561TK/02 Improve log output when DKIM signing operation fails.
2562
2563MH/01 Treat the transport option dkim_domain as a colon separated
2564 list, not as a single string, and sign the message with each element,
2565 omitting multiple occurences of the same signer.
2566
c1b141a8
NM
2567NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2568 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2569
b26eacf1 2570NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2571 Patch by Simon Arlott
2572
179c5980 2573PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2574 MBX locking. Notification from Dan Rosenberg.
179c5980 2575
9bd3e22c 2576
7c6d71af
NM
2577Exim version 4.71
2578-----------------
2579
7d9f747b 2580TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2581
f013fb92
NM
2582NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2583
0eb8eedd
NM
2584NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2585
663ee6d9
NM
2586NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2587
177ebd9b
NM
2588NM/04 Bugzilla 915: Flag broken perl installation during build.
2589
7c6d71af 2590
210f147e
NM
2591Exim version 4.70
2592-----------------
2593
cdd3bb85 2594TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2595 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2596
2597TK/02 Write list of recipients to X-Envelope-Sender header when building
2598 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2599 Hirsch).
cdd3bb85
TK
2600
2601TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2602 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2603 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2604
2605TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2606 by Mark Daniel Reidel <mr@df.eu>.
2607
210f147e
NM
2608NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2609 When building exim an external PCRE library is now needed -
2610 PCRE is a system library on the majority of modern systems.
2611 See entry on PCRE_LIBS in EDITME file.
2612
deafd5b3
NM
2613NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2614 conversation. Added nologin parameter to request.
7d9f747b 2615 Patch contributed by Kirill Miazine.
deafd5b3 2616
089793a4
TF
2617TF/01 Do not log submission mode rewrites if they do not change the address.
2618
5f16ca82
TF
2619TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2620
dae9d94e 2621NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2622 log files in place. Contributed by Roberto Lima.
dae9d94e 2623
7d9f747b 2624NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2625
06864c44
TF
2626TF/03 Bugzilla 615: When checking the local_parts router precondition
2627 after a local_part_suffix or local_part_prefix option, Exim now
2628 does not use the address's named list lookup cache, since this
2629 contains cached lookups for the whole local part.
2630
65a7d8c3 2631NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2632 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2633
23510047 2634TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2635
7d9f747b 2636NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2637
7d8eec3a 2638NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2639 Patch provided by Jan Srzednicki.
6c588e74 2640
89dec7b6
TF
2641TF/05 Leading white space used to be stripped from $spam_report which
2642 wrecked the formatting. Now it is preserved.
5f28a6e8 2643
a99de90c
TF
2644TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2645 that they are available at delivery time.
2646
e2803e40
TF
2647TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2648
7199e1ee
TF
2649TF/08 TLS error reporting now respects the incoming_interface and
2650 incoming_port log selectors.
2651
e276e04b
TF
2652TF/09 Produce a more useful error message if an SMTP transport's hosts
2653 setting expands to an empty string.
2654
ce552449 2655NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2656 Patch provided by Phil Pennock.
ce552449 2657
e765a0f1 2658NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2659 Patch provided by Richard Godbee.
e765a0f1 2660
4f054c63 2661NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2662 acl_smtp_notquit, added index entry.
4f054c63 2663
7d9f747b
PP
2664NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2665 Patch provided by Eugene Bujak.
24c929a2 2666
7d9f747b
PP
2667NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2668 accept(). Patch provided by Maxim Dounin.
cf73943b 2669
b52bc06e 2670NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2671 Patch provided by Phil Pennock.
b52bc06e 2672
447de4b0
NM
2673NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2674
4c69d561 2675NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2676 Patch provided by Brad "anomie" Jorsch.
4c69d561 2677
d5c39246 2678NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2679 Patch provided by Dean Brooks.
9b989985 2680
0b23848a
TK
2681TK/05 Add native DKIM support (does not depend on external libraries).
2682
8f3414a1 2683NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2684 Patch provided by Graeme Fowler.
e2aacdfd 2685
fb6f955d
NM
2686NM/16 Bugzilla 851: Documentation example syntax fix.
2687
2688NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2689
7d9f747b
PP
2690NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2691 lsearch.
dbb0bf41 2692
7d9f747b
PP
2693NM/19 Bugzilla 745: TLS version reporting.
2694 Patch provided by Phil Pennock.
f3766eb5 2695
7d9f747b
PP
2696NM/20 Bugzilla 167: bool: condition support.
2697 Patch provided by Phil Pennock.
36f12725 2698
7d9f747b
PP
2699NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2700 clients. Patch provided by Phil Pennock.
e6060e2c 2701
7d9f747b
PP
2702NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2703 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2704
7d9f747b
PP
2705NM/23 Bugzilla 687: Fix misparses in eximstats.
2706 Patch provided by Heiko Schlittermann.
d5c13d66 2707
7d9f747b
PP
2708NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2709 Patch provided by Heiko Schlittermann.
b2335c0b 2710
7d9f747b 2711NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2712 plus update to original patch.
f4cd9433 2713
7d9f747b 2714NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2715
7d9f747b
PP
2716NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2717 Patch provided by David Brownlee.
8dc71ab3 2718
7d9f747b 2719NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2720
7d9f747b 2721NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2722
7d9f747b 2723NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2724
7d9f747b 2725NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2726
17792b53 2727NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2728 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2729
7d9f747b
PP
2730NM/33 Bugzilla 898: Transport filter timeout fix.
2731 Patch by Todd Rinaldo.
52383f8f 2732
91576cec 2733NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2734 Patch by Serge Demonchaux.
5ca6d115 2735
7d9f747b
PP
2736NM/35 Bugzilla 39: Base64 decode bug fixes.
2737 Patch by Jakob Hirsch.
baee9eee 2738
7d9f747b 2739NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2740
7d9f747b 2741NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2742
7d9f747b 2743NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2744
7d9f747b 2745NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2746
deafd5b3 2747
47db1125
NM
2748Exim version 4.69
2749-----------------
2750
4b3504d0
TK
2751TK/01 Add preliminary DKIM support. Currently requires a forked version of
2752 ALT-N's libdkim that I have put here:
2753 http://duncanthrax.net/exim-experimental/
2754
2755 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2756 were called 'true' and it seems that C99 defines that as a reserved
2757 keyword to be used with 'bool' variable types. That means you could
2758 not include C99-style headers which use bools without triggering
2759 build errors in sieve.c.
2760
81ea09ca
NM
2761NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2762 as mailq or other aliases. Changed the --help handling significantly
2763 to do whats expected. exim_usage() emits usage/help information.
2764
f13cddcb
SC
2765SC/01 Added the -bylocaldomain option to eximstats.
2766
7d9f747b 2767NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2768
7d9f747b 2769NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2770
7d9f747b 2771NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2772
2773
eb4c0de6
PH
2774Exim version 4.68
2775-----------------
2776
2777PH/01 Another patch from the Sieve maintainer.
2778
6a3bceb1
PH
2779PH/02 When an IPv6 address is converted to a string for single-key lookup
2780 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2781 dots are used instead of colons so that keys in lsearch files need not
2782 contain colons. This was done some time before quoting was made available
2783 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2784 (notated using the quote facility) so as to distinguish them from IPv4
2785 keys. This meant that lookups for IP addresses in host lists did not work
2786 for iplsearch lookups.
2787
2788 This has been fixed by arranging for IPv6 addresses to be expressed with
2789 colons if the lookup type is iplsearch. This is not incompatible, because
2790 previously such lookups could never work.
2791
4c04137d 2792 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2793 ordinary lsearch keys. However, making the change in all cases is
2794 incompatible and would probably break a number of configurations.
2795
2e30fa9d
TK
2796TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2797 version.
2798
0806a9c5
MH
2799MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2800 conversion specification without a maximum field width, thereby enabling
2801 a rogue spamd server to cause a buffer overflow. While nobody in their
2802 right mind would setup Exim to query an untrusted spamd server, an
2803 attacker that gains access to a server running spamd could potentially
2804 exploit this vulnerability to run arbitrary code as the Exim user.
2805
ae276964
TK
2806TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2807 $primary_hostname instead of what libspf2 thinks the hosts name is.
2808
0f2cbd1b
MH
2809MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2810 a directory entry by the name of the lookup key. Previously, if a
2811 symlink pointed to a non-existing file or a file in a directory that
2812 Exim lacked permissions to read, a lookup for a key matching that
2813 symlink would fail. Now it is enough that a matching directory entry
2814 exists, symlink or not. (Bugzilla 503.)
2815
2b85bce7
PH
2816PH/03 The body_linecount and body_zerocount variables are now exported in the
2817 local_scan API.
2818
93655c46
PH
2819PH/04 Added the $dnslist_matched variable.
2820
6c512171
PH
2821PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2822 This means they are set thereafter only if the connection becomes
2823 encrypted.
2824
2825PH/06 Added the client_condition to authenticators so that some can be skipped
2826 by clients under certain conditions.
2827
aa6dc513
PH
2828PH/07 The error message for a badly-placed control=no_multiline_responses left
2829 "_responses" off the end of the name.
2830
a96603a0
PH
2831PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2832
8f240103
PH
2833PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2834 (without spaces) instead of just copying the configuration text.
2835
2836PH/10 Added the /noupdate option to the ratelimit ACL condition.
2837
d677b2f2
PH
2838PH/11 Added $max_received_linelength.
2839
d52120f2
PH
2840PH/12 Added +ignore_defer and +include_defer to host lists.
2841
64f2600a
PH
2842PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2843 way in which PCRE > 7.0 is built.
2844
8669f003
PH
2845PH/14 Implemented queue_only_load_latch.
2846
a4dc33a8
PH
2847PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2848 MAIL command. The effect was to mangle the value on 64-bit systems.
2849
d6a60c0f
PH
2850PH/16 Another patch from the Sieve maintainer.
2851
8f128379
PH
2852PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2853
8932dffe
PH
2854PH/18 If a system quota error occurred while trying to create the file for
2855 a maildir delivery, the message "Mailbox is full" was not appended to the
2856 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2857 only to a quota excession during the actual writing of the file.
d6a60c0f 2858
ddea74fa 2859PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
2860 characters?) which causes problems in log lines. The DN values are now
2861 passed through string_printing() before being added to log lines.
2862
ddea74fa 2863PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
2864 and InterBase are left for another time.)
2865
ddea74fa
PH
2866PH/21 Added message_body_newlines option.
2867
ce9f225c
PH
2868PH/22 Guard against possible overflow in moan_check_errorcopy().
2869
19897d52
PH
2870PH/23 POSIX allows open() to be a macro; guard against that.
2871
bc64a74d
PH
2872PH/24 If the recipient of an error message contained an @ in the local part
2873 (suitably quoted, of course), incorrect values were put in $domain and
2874 $local_part during the evaluation of errors_copy.
2875
eb4c0de6 2876
b4ed4da0
PH
2877Exim version 4.67
2878-----------------
2879
22ad45c9
MH
2880MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2881 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2882 Jan Srzednicki.
2883
b4ed4da0
PH
2884PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2885 issue a MAIL command.
2886
431b7361
PH
2887PH/02 In an ACL statement such as
2888
2889 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2890
2891 if a client was not listed at all, or was listed with a value other than
2892 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2893 the condition was not true (as it should be), so access was not denied.
2894 The bug was that the ! inversion was incorrectly passed on to the second
2895 item. This has been fixed.
2896
2897PH/03 Added additional dnslists conditions == and =& which are different from
2898 = and & when the dns lookup returns more than one IP address.
2899
83da1223
PH
2900PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2901 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2902
54fc8428
PH
2903PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2904 FSYNC, which compiles an option called disable_fsync that allows for
2905 bypassing fsync(). The documentation is heavily laced with warnings.
2906
34c5e8dd
SC
2907SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2908
bbe15da8
PH
2909PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2910 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2911 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2912 including adding "make clean"; (3) Added -fPIC when compiling the test
2913 dynamically loaded module, to get rid of a warning.
2914
0e8a9471
MH
2915MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2916 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2917 = 0s. The bug is otherwise harmless.
2918
f0872424
PH
2919PH/07 There was a bug in the dovecot authenticator such that the value of
2920 $auth1 could be overwritten, and so not correctly preserved, after a
2921 successful authentication. This usually meant that the value preserved by
2922 the server_setid option was incorrect.
2923
b01dd148
PH
2924PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2925
6bf342e1
PH
2926PH/09 Installed PCRE release 7.0.
2927
273f34d0
PH
2928PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2929 run for batched SMTP input. It is now run at the start of every message
2930 in the batch. While fixing this I discovered that the process information
2931 (output by running exiwhat) was not always getting set for -bs and -bS
2932 input. This is fixed, and it now also says "batched" for BSMTP.
2933
cf8b11a5
PH
2934PH/11 Added control=no_pipelining.
2935
41c7c167
PH
2936PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2937 patch, slightly modified), and move the expansion of helo_data till after
2938 the connection is made in the smtp transport (so it can use these
2939 values).
2940
9c57cbc0
PH
2941PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2942
f3f065bb
PH
2943PH/14 Added log_selector = +pid.
2944
047bdd8c
PH
2945PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2946
0ce9abe6
PH
2947PH/16 Add ${if forany and ${if forall.
2948
0e22dfd1
PH
2949PH/17 Added dsn_from option to vary the From: line in DSNs.
2950
4c590bd1
PH
2951PH/18 Flush SMTP output before performing a callout, unless control =
2952 no_callout_flush is set.
2953
09945f1e
PH
2954PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2955 was true (the default) a successful delivery failed to delete the retry
2956 item, thus causing premature timeout of the address. The bug is now
2957 fixed.
2958
c51b8e75
PH
2959PH/20 Added hosts_avoid_pipelining to the smtp transport.
2960
e28326d8 2961PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 2962 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
2963 other ACL rejections are.
2964
75b1493f
PH
2965PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2966 with slight modification.
2967
7c5214ec
PH
2968PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2969 draft, changing the syntax and factoring some duplicate code".
2970
4311097e
PH
2971PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2972 for deliveries of the second and subsequent messages over the same SMTP
2973 connection.
2974
29f89cad
PH
2975PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2976 ${reduce, with only minor "tidies".
2977
5e687460
SC
2978SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2979
c3611384
PH
2980PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2981 expansion side effects.
2982
5a11a7b4
PH
2983PH/27 When a message times out after an over-quota error from an Exim-imposed
2984 quota, the bounce message says "mailbox is full". This message was not
2985 being given when it was a system quota that was exceeded. It now should
2986 be the same.
2987
0e20aff9
MH
2988MH/03 Made $recipients available in local_scan(). local_scan() already has
2989 better access to the recipient list through recipients_list[], but
2990 $recipients can be useful in postmaster-provided expansion strings.
2991
ca86f471
PH
2992PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2993 in the case of a MAIL command with additional options following the
2994 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2995 were accidentally chopped off.
2996
a14e5636
PH
2997PH/29 SMTP synchronization checks are implemented when a command is read -
2998 there is a check that no more input is waiting when there shouldn't be
2999 any. However, for some commands, a delay in an ACL can mean that it is
3000 some time before the response is written. In this time, more input might
3001 arrive, invalidly. So now there are extra checks after an ACL has run for
3002 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
3003 pipelining has not been advertised.
3004
ec95d1a6
PH
3005PH/30 MH's patch to allow iscntrl() characters to be list separators.
3006
42855d71
PH
3007PH/31 Unlike :fail:, a custom message specified with :defer: was not being
3008 returned in the SMTP response when smtp_return_error_details was false.
3009 This has been fixed.
3010
57c2c631
PH
3011PH/32 Change the Dovecot authenticator to use read() and write() on the socket
3012 instead of the C I/O that was originally supplied, because problems were
3013 reported on Solaris.
3014
58c01c94
PH
3015PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
3016 Exim which did not show up earlier: it was assuming that a call to
3017 SSL_CTX_set_info_callback() might give an error value. In fact, there is
3018 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
3019 was a macro that became an assignment, so it seemed to work. This has
3020 changed to a proper function call with a void return, hence the compile
3021 error. Exim's code has been fixed.
3022
dee5a20a
PH
3023PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3024 cpus.
3025
d2ee6114
PH
3026PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3027
b2d5182b
PH
3028PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3029
79749a79
PH
3030PH/37 If a message is not accepted after it has had an id assigned (e.g.
3031 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
3032 "Completed" line in the log. When some messages of this type were
3033 selected by exigrep, they were listed as "not completed". Others were
3034 picked up by some special patterns. I have improved the selection
3035 criteria to be more general.
79749a79 3036
c456d9bb
PH
3037PH/38 The host_find_failed option in the manualroute router can now be set
3038 to "ignore", to completely ignore a host whose IP address cannot be
3039 found. If all hosts are ignored, the behaviour is controlled by the new
3040 host_all_ignored option.
3041
cd9868ec
PH
3042PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3043 homing or because of multiple MX records with /mx) generated more than
3044 one IP address, and the following item turned out to be the local host,
3045 all the secondary addresses of the first item were incorrectly removed
3046 from the list, along with the local host and any following hosts (which
3047 is what is supposed to happen).
3048
ebeaf996
PH
3049PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3050 whoever called Exim into the -H file. In the case of the daemon it was
3051 behaving confusingly. When first started, it used values for whoever
3052 started the daemon, but after a SIGHUP it used the Exim user (because it
3053 calls itself on a restart). I have changed the code so that it now always
3054 uses the Exim user.
3055
2679d413
PH
3056PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3057 message are rejected with the same error (e.g. no authentication or bad
3058 sender address), and a DATA command is nevertheless sent (as can happen
3059 with PIPELINING or a stupid MUA), the error message that was given to the
3060 RCPT commands is included in the rejection of the DATA command. This is
3061 intended to be helpful for MUAs that show only the final error to their
3062 users.
3063
84024b72
PH
3064PH/42 Another patch from the Sieve maintainer.
3065
8005d38e
SC
3066SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3067 Eximstats - Fixed some broken HTML links and added missing column headers
3068 (Jez Hancock).
3069 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3070 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3071
3298c6c6
SC
3072SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3073
a43a27c5
PH
3074PH/43 Yet another patch from the Sieve maintainer.
3075
58eb016e 3076PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
3077 the response to the final '.' that terminates a message, but only in the
3078 case where the client has not sent further data following the '.'
3079 (unfortunately, this is allowed). However, in many cases there won't be
3080 any further data because there won't be any more messages to send. A call
3081 to select() can be used: if it shows that the input is "ready", there is
3082 either input waiting, or the socket has been closed. An attempt to read
3083 the next input character can distinguish the two cases. Previously, Exim
58eb016e 3084 would have sent an OK response which the client would never have see.
563b63fa
PH
3085 This could lead to message repetition. This fix should cure that, at
3086 least in a lot of common cases.
58eb016e 3087
b43a74ea
PH
3088PH/45 Do not advertise STARTTLS in response to HELP unless it would be
3089 advertised in response to EHLO.
3090
b4ed4da0 3091
5dd1517f
PH
3092Exim version 4.66
3093-----------------
3094
3095PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
3096 fixed by 4.65/MH/01 (is this a record?) are fixed:
3097
3098 (i) An empty string was always treated as zero by the numeric comparison
3099 operators. This behaviour has been restored.
3100
3101 (ii) It is documented that the numeric comparison operators always treat
3102 their arguments as decimal numbers. This was broken in that numbers
3103 starting with 0 were being interpreted as octal.
3104
3105 While fixing these problems I realized that there was another issue that
3106 hadn't been noticed. Values of message_size_limit (both the global option
3107 and the transport option) were treated as octal if they started with 0.
3108 The documentation was vague. These values are now always treated as
3109 decimal, and I will make that clear in the documentation.
3110
3111
93cfa765
TK
3112Exim version 4.65
3113-----------------
3114
3115TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
3116 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
3117 versions. (#438)
3118
d6066548
MH
3119MH/01 Don't check that the operands of numeric comparison operators are
3120 integers when their expansion is in "skipping" mode (fixes bug
3121 introduced by 4.64-PH/07).
3122
4362ff0d
PH
3123PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
3124 child addresses, Exim now panics and dies. Previously, because the count
3125 is held in a short int, deliveries were likely to be lost. As such a
3126 large number of recipients for a single message is ridiculous
3127 (performance will be very, very poor), I have chosen to impose a limit
3128 rather than extend the field.
3129
93cfa765 3130
944e9e9c
TF
3131Exim version 4.64
3132-----------------
aa41d2de 3133
21d74bd9
TK
3134TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
3135 leftover -K file (the existence of which was triggered by #402).
3136 While we were at it, introduced process PID as part of the -K
3137 filename. This should rule out race conditions when creating
3138 these files.
3139
3140TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
3141 processing considerably. Previous code took too long for large mails,
3142 triggering a timeout which in turn triggers #401.
3143
3144TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
3145 in the DK code in transports.c. sendfile() is not really portable,
3146 hence the _LINUX specificness.
944e9e9c
TF
3147
3148TF/01 In the add_headers option to the mail command in an Exim filter,
3149 there was a bug that Exim would claim a syntax error in any
3150 header after the first one which had an odd number of characters
3151 in the field name.
3152
2b1c6e3a
PH
3153PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
3154 callout verification, Exim cached a "reject" for the entire domain. This
3155 is correct for most verifications, but it is not correct for a recipient
3156 verification with use_sender or use_postmaster set, because in that case
3157 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
3158 case of MAIL FROM:<> rejection from other early rejections (e.g.
3159 rejection of HELO). When verifying a recipient using a non-null MAIL
3160 address, the cache is ignored if it shows MAIL FROM:<> rejection.
3161 Whatever the result of the callout, the value of the domain cache is
3162 left unchanged (for any other kind of callout, getting as far as trying
3163 RCPT means that the domain itself is ok).
3164
1f872c80
PH
3165PH/02 Tidied a number of unused variable and signed/unsigned warnings that
3166 gcc 4.1.1 threw up.
3167
3168PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
3169 manifest itself as EPIPE rather than ECONNECT. When tidying away a
3170 session, the daemon ignores ECONNECT errors and logs others; it now
3171 ignores EPIPE as well.
3172
d203e649
PH
3173PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
3174 (quoted-printable decoding).
3175
cc2ed8f7 3176PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 3177 later the small subsequent patch to fix an introduced bug.
f951fd57 3178
ddfcd446
PH
3179PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
3180
d45b1de8
PH
3181PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
3182
3183PH/08 An error is now given if message_size_limit is specified negative.
3184
38a0a95f 3185PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 3186 to be given (somewhat) arbitrary names.
38a0a95f 3187
a2405d83
JJ
3188JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
3189 in 4.64-PH/09.
3190
3191JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
3192 miscellaneous code fixes
3193
6ea85e9a
PH
3194PH/10 Added the log_reject_target ACL modifier to specify where to log
3195 rejections.
3196
26da7e20
PH
3197PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
3198 hostname. This is wrong, because it relates to the incoming message (and
3199 probably the interface on which it is arriving) and not to the outgoing
3200 callout (which could be using a different interface). This has been
3201 changed to use the value of the helo_data option from the smtp transport
3202 instead - this is what is used when a message is actually being sent. If
3203 there is no remote transport (possible with a router that sets up host
3204 addresses), $smtp_active_hostname is used.
6ea85e9a 3205
14aa5a05 3206PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 3207 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
3208 (a) The code assumed that strncpy() returns a negative number on buffer
3209 overflow, which isn't the case. Replaced with Exim's string_format()
3210 function.
3211 (b) There were several signed/unsigned issues. I just did the minimum
3212 hacking in of casts. There is scope for a larger refactoring.
3213 (c) The code used strcasecmp() which is not a standard C function.
3214 Replaced with Exim's strcmpic() function.
3215 (d) The code set only $1; it now sets $auth1 as well.
3216 (e) A simple test gave the error "authentication client didn't specify
3217 service in request". It would seem that Dovecot has changed its
3218 interface. Fortunately there's a specification; I followed it and
3219 changed what the client sends and it appears to be working now.
3220
ff75a1f7
PH
3221PH/13 Added $message_headers_raw to provide the headers without RFC 2047
3222 decoding.
3223
e6f6568e
PH
3224PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
3225 address A is aliased to B and C, where B exists and C does not. Without
3226 -v the output is "A verified" because verification stops after a
3227 successful redirection if more than one address is generated. However,
3228 with -v the child addresses are also verified. Exim was outputting "A
3229 failed to verify" and then showing the successful verification for C,
3230 with its parentage. It now outputs "B failed to verify", showing B's
3231 parentage before showing the successful verification of C.
3232
d6f6e0dc
PH
3233PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
3234 look up a TXT record in a specific list after matching in a combined
3235 list.
3236