tidying
[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.
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6Exim version 4.94
7-----------------
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8
9JH/01 Avoid costly startup code when not strictly needed. This reduces time
10 for some exim process initialisations. It does mean that the logging
11 of TLS configuration problems is only done for the daemon startup.
12
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13JH/02 Early-pipelining support code is now included unless disabled in Makefile.
14
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15JH/03 DKIM verification defaults no long accept sha1 hashes, to conform to
16 RFC 8301. They can still be enabled, using the dkim_verify_hashes main
17 option.
18
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19JH/04 Support CHUNKING from an smtp transport using a transport_filter, when
20 DKIM signing is being done. Previously a transport_filter would always
21 disable CHUNKING, falling back to traditional DATA.
22
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23JH/05 Regard command-line receipients as tainted.
24
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25JH/06 Bug 340: Remove the daemon pid file on exit, whe due to SIGTERM.
26
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27JH/07 Bug 2489: Fix crash in the "pam" expansion condition. It seems that the
28 PAM library frees one of the arguments given to it, despite the
29 documentation. Therefore a plain malloc must be used.
30
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31JH/08 Bug 2491: Use tainted buffers for the transport smtp context. Previously
32 on-stack buffers were used, resulting in a taint trap when DSN information
33 copied from a received message was written into the buffer.
34
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35JH/09 Bug 2493: Harden ARC verify against Outlook, whick has been seen to mix
36 the ordering of its ARC headers. This caused a crash.
37
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38JH/10 Bug 2492: Use tainted memory for retry record when needed. Previously when
39 a new record was being constructed with information from the peer, a trap
40 was taken.
41
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42JH/11 Bug 2494: Unset the default for dmarc_tld_file. Previously a naiive
43 installation would get error messages from DMARC verify, when it hit the
44 nonexistent file indicated by the default. Distros wanting DMARC enabled
45 should both provide the file and set the option.
46 Also enforce no DMARC verification for command-line sourced messages.
47
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48JH/12 Fix an uninitialised flag in early-pipelining. Previously connections
49 could, depending on the platform, hang at the STARTTLS response.
50
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51JH/13 Bug 2498: Reset a counter used for ARC verify before handling another
52 message on a connection. Previously if one message had ARC headers and
53 the following one did not, a crash could result when adding an
54 Authentication-Results: header.
55
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56JH/14 Bug 2500: Rewind some of the common-coding in string handling between the
57 Exim main code and Exim-related utities. The introduction of taint
58 tracking also did many adjustments to string handling. Since then, eximon
59 frequently terminated with an assert failure.
60
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61JH/15 When PIPELINING, synch after every hundred or so RCPT commands sent and
62 check for 452 responses. This slightly helps the inefficieny of doing
63 a large alias-expansion into a recipient-limited target. The max_rcpt
64 transport option still applies (and at the current default, will override
65 the new feature). The check is done for either cause of synch, and forces
66 a fast-retry of all 452'd recipients using a new MAIL FROM on the same
67 connection. The new facility is not tunable at this time.
68
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69JH/16 Fix the variables set by the gsasl authenticator. Previously a pointer to
70 library live data was being used, so the results became garbage. Make
71 copies while it is still usable.
72
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73JH/17 Logging: when the deliver_time selector ise set, include the DT= field
74 on delivery deferred (==) and failed (**) lines (if a delivery was
75 attemtped). Previously it was only on completion (=>) lines.
76
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77JH/18 Authentication: the gsasl driver not provides the $authN variables in time
78 for the expansion of the server_scram_iter and server_scram_salt options.
79
79e5ebf9 80WB/01 SPF: DNS lookups for the obsolete SPF RR type done by the libspf2 library
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81 are now specifically given a NO_DATA response without hitting the system
82 resolver. The library goes on to do the now-standard TXT lookup.
79e5ebf9 83 Use of dnsdb lookups is not affected.
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84
85JH/19 Bug 2507: Modules: on handling a dynamic-module (lookups) open failure,
86 only retrieve the errormessage once. Previously two calls to dlerror()
87 were used, and the second one (for mainlog/paniclog) retrieved null
88 information.
79e5ebf9 89
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90JH/20 Taint checking: disallow use of tainted data for
91 - the appendfile transport file and directory options
92 - the pipe transport command
481e63ca 93 - the autoreply transport file, log and once options
7d99cba1 94 - file names used by the redirect router (including filter files)
ed162055 95 - named-queue names
129a5d13 96 - paths used by single-key lookups
9214d2e4 97 Previously this was permitted.
0d2e392e 98
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99JH/21 Bug 2501: Fix init call in the heimdal authenticator. Previously it
100 adjusted the size of a major service buffer; this failed because the
101 buffer was in use at the time. Change to a compile-time increase in the
102 buffer size, when this authenticator is compiled into exim.
103
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104JH/22 Taint-checking: move to safe-mode taint checking on all platforms. The
105 previous fast-mode was untenable in the face of glibs using mmap to
106 support larger malloc requests.
36eb5d3d 107
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108PP/01 Update the openssl_options possible values through OpenSSL 1.1.1c.
109 New values supported, if defined on system where compiled:
110 allow_no_dhe_kex, cryptopro_tlsext_bug, enable_middlebox_compat,
111 no_anti_replay, no_encrypt_then_mac, prioritize_chacha, tlsext_padding
112
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113JH/23 Performance improvement in the initial phase of a two-pass queue run. By
114 running a limited number of proceses in parallel, a benefit is gained. The
115 amount varies with the platform hardware and load. The use of the option
116 queue_run_in_order means we cannot do this, as ordering becomes
117 indeterminate.
118
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119JH/24 Bug 2524: fix the cyrus_sasl auth driver gssapi usage. A previous fix
120 had introduced a string-copy (for ensuring NUL-termination) which was not
121 appropriate for that case, which can include embedded NUL bytes in the
122 block of data. Investigation showed the copy to actually be needless, the
123 data being length-specified.
124
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125JH/25 Fix use of concurrent TLS connections under GnuTLS. When a callout was
126 done during a receiving connection, and both used TLS, global info was
127 used rather than per-connection info for tracking the state of data
128 queued for transmission. This could result in a connection hang.
129
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130JH/26 Fix use of the SIZE parameter on MAIL commands, on continued connections.
131 Previously, when delivering serveral messages down a single connection
132 only the first would provide a SIZE. This was due to the size information
133 not being properly tracked.
134
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135JH/27 Bug 2530: When operating in a timezone with sub-minute offset, such as
136 TAI (at 37 seconds currently), pretend to be in UTC for time-related
137 expansion and logging. Previously, spurious values such as a future
138 minute could be seen.
139
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140JH/28 Bug 2533: Fix expansion of ${tr } item. When called in some situations
141 it could crash from a null-deref. This could also affect the
142 ${addresses: } operator and ${readsock } item.
143
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144JH/29 Bug 2537: Fix $mime_part_count. When a single connection had a non-mime
145 message following a mime one, the variable was not reset.
146
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147JH/30 When an pipelined-connect fails at the first response, assume incorrect
148 cached capability (perhaps the peer reneged?) and immediately retry in
149 non-pipelined mode.
150
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151JH/31 Fix spurious detection of timeout while writing to transport filter.
152
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153JH/32 Bug 2541: Fix segfault on bad cmdline -f (sender) argument. Previously
154 an attempt to copy the string was made before checking it.
155
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156JH/33 Fix the dsearch lookup to return an untainted result. Previously the
157 taint of the lookup key was maintained; we now regard the presence in the
158 filesystem as sufficient validation.
159
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160JH/34 Fix the readsocket expansion to not segfault when an empty "options"
161 argument is supplied.
162
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163JH/35 The dsearch lookup now requires that the directory is an absolute path.
164 Previously this was not checked, and nonempty relative paths made an
165 access under Exim's current working directory.
166
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167JH/36 Bug 2554: Fix msg:defer event for the hosts_max_try_hardlimit case.
168 Previously no event was raised.
169
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170JH/37 Bug 2552: Fix the check on spool space during reception to use the SIZE
171 parameter supplied by the sender MAIL FROM command. Previously it was
172 ignored, and only the check_spool_space option value for the required
173 leeway checked.
174
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176Exim version 4.93
177-----------------
178
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179JH/01 OpenSSL: With debug enabled output keying information sufficient, server
180 side, to decode a TLS 1.3 packet capture.
40ed89b3 181
fc243e94 182JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
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183 Previously the default library behaviour applied, sending two, each in
184 its own TCP segment.
185
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186JH/03 Debug output for ACL now gives the config file name and line number for
187 each verb.
188
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189JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
190
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191JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
192
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193JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
194 buffer overrun for (non-chunking) other transports.
195
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196JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
197 TLS1.3, means that a server rejecting a client certificate is not visible
198 to the client until the first read of encrypted data (typically the
199 response to EHLO). Add detection for that case and treat it as a failed
200 TLS connection attempt, so that the normal retry-in-clear can work (if
201 suitably configured).
202
c05bdbd6 203JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
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204 and/or domain. Found and fixed by Jason Betts.
205
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206JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
207 configuration). If a CNAME target was not a wellformed name pattern, a
208 crash could result.
209
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210JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
211 the OS reports them interleaved with other addresses.
212
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213JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
214 used both for input and for a verify callout, both encrypted, SMTP
215 responses being sent by the server could be lost. This resulted in
216 dropped connections and sometimes bounces generated by a peer sending
217 to this system.
254f38d1 218
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219JH/11 Harden plaintext authenticator against a badly misconfigured client-send
220 string. Previously it was possible to cause undefined behaviour in a
221 library routine (usually a crash). Found by "zerons".
222
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223JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
224 output.
225
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226JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
227 API was removed, so update to use the newer ones.
228
3c55eef2 229JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
00c0dd4e 230 any timeout set, is taking a long time. Previously we would hang on to a
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231 rotated logfile "forever" if the input was arriving with long gaps
232 (a previous attempt to fix addressed lack, for a long time, of initial
233 input).
234
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235HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
236 shared (NFS) environment. The length of the tempfile name is now
237 4 + 16 ("hdr.$message_exim_id") which might break on file
238 systems which restrict the file name length to lower values.
239 (It was "hdr.$pid".)
240
7d8d08c4 241HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
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242 shared (NFS) environment.
243
7d8d08c4 244HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
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245 did for all versions <4.90). Notably -M, -m, --invert, -I may be
246 affected.
247
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248JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
249 on some platforms for bit 31.
250
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251JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
252 to changes apparently associated with TLS1.3 handling some of the APIs
253 previously used were either nonfunctional or inappropriate. Strings
254 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
255 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
256 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
257 This affects log line X= elements, the $tls_{in,out}_cipher variables,
258 and the use of specific cipher names in the encrypted= ACL condition.
259
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260JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
261
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262JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
263 verification result was not updated unless hosts_require_ocsp applied.
264
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265JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
266 queue_list_requires_admin set to false, non-admin users were denied the
267 facility.
268
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269JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
270 directory-of-certs mode. Previously they were advertised despite the
271 documentation.
272
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273JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
274 A single TCP connection by a client will now hold a TLS connection open
275 for multiple message deliveries, by default. Previoud the default was to
276 not do so.
277
59c0959a 278JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
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279 default. If built with the facility, DANE will be used. The facility
280 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
281
282JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
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283 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
284 must be defined and you must still, unless you define DISABLE_TLS, manage
285 the the include-dir and library-file requirements that go with that
286 choice. Non-TLS builds are still supported.
59c0959a 287
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288JH/24 Fix duplicated logging of peer name/address, on a transport connection-
289 reject under TFO.
96eb7d2a 290
efad2f41 291JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
4e48d56c 292 default. If the platform supports and has the facility enabled, it will
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293 be requested on all coneections.
294
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295JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
296 controlled by the build-time option SUPPORT_PIPE_CONNECT.
297
6ee11061 298PP/01 Unbreak heimdal_gssapi, broken in 4.92.
0a5441fc 299
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300JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
301 success-DSN messages. Previously the From: header was always the default
302 one for these; the option was ignored.
6ee11061 303
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304JH/28 Fix the timeout on smtp response to apply to the whole response.
305 Previously it was reset for every read, so a teergrubing peer sending
306 single bytes within the time limit could extend the connection for a
307 long time. Credit to Qualsys Security Advisory Team for the discovery.
308
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309JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
310 delivery address, which leaked information of the results of local
311 forwarding. Change to the original envelope recipient address, per
312 standards.
313
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314JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
315 requested. Previously not bounce was generated and a log entry of
316 error ignored was made.
317
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318JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
319
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320JH/32 Introduce a general tainting mechanism for values read from the input
321 channel, and values derived from them. Refuse to expand any tainted
322 values, to catch one form of exploit.
323
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324JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
325 was unused and the unexpanded text used for the test. Found and
326 fixed by Ruben Jenster.
327
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328JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
329 an attempt to use a TLS library read routine dereffed a nul pointer,
330 causing a segfault.
331
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332JH/35 Bug 2409: filter out-of-spec chars from callout response before using
333 them in our smtp response.
334
9c6881f8 335JH/36 Have the general router option retry_use_local_part default to true when
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336 any of the restrictive preconditions are set (to anything). Previously it
337 was only for check_local user. The change removes one item of manual
338 configuration which is required for proper retries when a remote router
339 handles a subset of addresses for a domain.
340
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341JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
342 link count into consideration.
343
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344HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
345 caused the extension of big_buffer, the following lines were ignored.
346
347JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
348 accordance with RFC 2308. Previously there was no expiry, so a longlived
349 receive process (eg. due to ACL delays) versus a short SOA value could
350 surprise.
351
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352HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
353
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354JH/39 Promote DMARC support to mainline.
355
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356JH/40 Bug 2452: Add a References: header to DSNs.
357
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358JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
359 parameters. The relevant library call is documented as "Deprecated: This
360 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
361 3.6.0, DH parameters are negotiated following RFC7919."
362
ab0e957b 363HS/06 Change the default of dnssec_request_domains to "*"
40ed89b3 364
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365JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
366 carried on and emitted a BDAT command, even when PIPELINING was not
367 active.
368
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369JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
370 buffer was used for the filename, resulting in a trap when tainted
371 arguments (eg. $domain) were used.
372
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373JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
374 recommended to avoid a possible server-load attack. The feature can be
375 re-enabled via the openssl_options main cofiguration option.
376
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377JH/45 local_scan API: documented the current smtp_printf() call. This changed
378 for version 4.90 - adding a "more data" boolean to the arguments.
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379 Bumped the ABI version number also, this having been missed previously;
380 release versions 4.90 to 4.92.3 inclusive were effectively broken in
381 respect of usage of smtp_printf() by either local_scan code or libraries
382 accessed via the ${dlfunc } expansion item. Both will need coding
383 adjustment for any calls to smtp_printf() to match the new function
384 signature; a FALSE value for the new argument is always safe.
b2d54f83 385
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386JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
387 the file-offset (which the Linux syscall does, and exim expects); this
388 resulted in an indefinite loop.
389
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390JH/47 ARC: fix crash in signing, triggered when a configuration error failed
391 to do ARC verification. The Authentication-Results: header line added
392 by the configuration then had no ARC item.
393
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395Exim version 4.92
396-----------------
397
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398JH/01 Remove code calling the customisable local_scan function, unless a new
399 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
400
401JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
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402 non-signal-safe functions being used.
403
404JH/03 Bug 2269: When presented with a received message having a stupidly large
405 number of DKIM-Signature headers, disable DKIM verification to avoid
406 a resource-consumption attack. The limit is set at twenty.
9723f966 407
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408JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
409 report of oldest_pass in ${authres } in consequence, and separate out
410 some descriptions of reasons for verification fail.
411
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412JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
413 files in the spool were present and unlocked. A queue-runner could spot
414 them, resulting in a duplicate delivery. Fix that by doing the unlock
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415 after the unlink. Investigation by Tim Stewart. Take the opportunity to
416 add more error-checking on spoolfile handling while that code is being
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417 messed with.
418
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419PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
420 No known attacks, no CVE, this is defensive hardening.
421
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422JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
423 a queue-runner could start a delivery while other operations were ongoing.
424 Cutthrough delivery was a common victim, resulting in duplicate delivery.
425 Found and investigated by Tim Stewart. Fix by using the open message data
426 file handle rather than opening another, and not locally closing it (which
427 releases a lock) for that case, while creating the temporary .eml format
428 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
429
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430JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
431 $sender_verify_failure/$recipient_verify_failure to "random".
432
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433JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
434 legitimate.
435
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436JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
437 Previously this would segfault.
438
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439JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
440 segfault.
441
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442JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
443 like zero, since the resolver should be doing this for us, But we need one
444 as a CNAME but no MX presence gets the CNAME returned; we need to check
445 that doesn't point to an MX to declare it "no MX returned" rather than
446 "error, loop". A new main option is added so the older capability of
447 following some limited number of chain links is maintained.
448
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449JH/12 Add client-ip info to non-pass iprev ${authres } lines.
450
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451JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
452 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
453 now-deprecated earlier definitions used only specified the range up to TLS
454 1.2 (in the older-version library docs).
455
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456JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
457
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458JH/15 Rework TLS client-side context management. Stop using a global, and
459 explicitly pass a context around. This enables future use of TLS for
460 connections to service-daemons (eg. malware scanning) while a client smtp
461 connection is using TLS; with cutthrough connections this is quite likely.
462
5054c4fd 463JH/16 Fix ARC verification to do AS checks in reverse order.
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464
465JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 466
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JH
467JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
468 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
469 Previously the "utf8" would be re-prepended for every additional message.
470
8c34c611
JH
471JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
472 Previously thery were accepted, resulting in issues when attempting to
473 forward messages to a non-supporting MTA.
474
1bca4f5f
PP
475PP/02 Let -n work with printing macros too, not just options.
476
8a6b4e02
JH
477JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
478 one parent address was copied, and bogus data was used at delivery-logging
479 time. Either a crash (after delivery) or bogus log data could result.
480 Discovery and analysis by Tim Stewart.
481
0a682b6c
PP
482PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
483 Previously if the string ended mid-character, we did not insert the
484 promised '?' replacement.
485
c2c451ac
PP
486PP/04 Documentation: current string operators work on bytes, not codepoints.
487
8768d548
JH
488JH/21 Change as many as possible of the global flags into one-bit bitfields; these
489 should pack well giving a smaller memory footprint so better caching and
490 therefore performance. Group the declarations where this can't be done so
491 that the byte-sized flag variables are not interspersed among pointer
492 variables, giving a better chance of good packing by the compiler.
493
5455f548
JH
494JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
495 non-null, to avoid issues with sites running BATV. Previously reports were
496 sent with an empty envelope sender so looked like bounces.
497
25beaee4
MK
498JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
499 The ignore_error flag wasn't being returned from the filter subprocess so
500 was not set for later routers. Investigation and fix by Matthias Kurz.
501
7ea1237c 502JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 503 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
MK
504 -Mrm. Developement by Matthias Kurz, hacked on by JH.
505
ebda598a
JH
506JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
507 a "Gnu special" function, asprintf() in the DB utility binary builds; I
508 hope that is portable enough.
509
570cb1bd
JH
510JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
511 requiring a known-CA anchor certificate; make it now rely entirely on the
512 TLSA as an anchor. Checking the name on the leaf cert against the name
513 on the A-record for the host is still done for TA (but not for EE mode).
514
eb58ddf5
JH
515JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
516 included in delivery lines for non-proxied connections, when compiled with
517 SUPPORT_SOCKS and running with proxy logging enabled.
518
ffbc20ed
MK
519JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
520 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
521 move the existing event to fire before the normal logging of message
522 failure so that custom logging is bracketed by normal logging.
523
4e928780
MK
524JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
525 msg:fail:internal event. Developement by Matthias Kurz.
526
75c121f0 527JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 528 far too small for todays use of crypto signatures stored there. Go all
75c121f0
JH
529 the way to the max DNS message size of 64kB, even though this might be
530 overmuch for IOT constrained device use.
531
e30f4f43
JH
532JH/31 Fix a bad use of a copy function, which could be used to pointlessly
533 copy a string over itself. The library routine is documented as not
534 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
535
a45431fa
JH
536JH/32 For main options check_spool_space and check_inode_space, where the
537 platform supports 64b integers, support more than the previous 2^31 kB
538 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
539 the previous G, M, k.
540
c0fb53b7
JH
541JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
542 $authenticated_fail_id variable on authentication failure. Previously
543 it was unset.
544
6aac3239
JH
545JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
546 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
547 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
548 GNUTLS_SEC_PARAM_MEDIUM.
549
5a2a0989
JH
550JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
551 side. Previously we would continue as if no SNI had been received.
552
de6f74f2 553JH/36 Harden the handling of string-lists. When a list consisted of a sole
b72f857f
JH
554 "<" character, which should be a list-separator specification, we walked
555 off past the nul-terimation.
556
de6f74f2
JH
557JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
558 causes) even when the retry time is not yet met. Previously they were
559 not, meaning that when (say) an account was over-quota and temp-rejecting,
560 and multiple senders' messages were queued, only one sender would get
561 notified on each configured delay_warning cycle.
562
aa6e77af 563JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 564
25fa0868
JH
565JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
566 cipher-suites, an error can be left on the stack even for a succeeding
567 accept; this results in impossible error messages when a later operation
568 actually does fail.
569
cb6bd80f
JH
570AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
571 return error codes indicating retry. Under TLS1.3 this becomes required.
572
573JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
574 it only wrote the new authenticators, resulting in a lack of tracking of
575 peer changes of ESMTP extensions until the next cache flush.
518b70e9 576
56ac062a
JH
577JH/41 Fix the loop reading a message header line to check for integer overflow,
578 and more-often against header_maxsize. Previously a crafted message could
579 induce a crash of the recive process; now the message is cleanly rejected.
580
ae63862b
MA
581JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
582 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
583
9723f966 584
bb264f6b
JH
585Exim version 4.91
586-----------------
459fca58 587
c39c8870 588GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
JH
589 When redis_servers is set to a list of > 1 element, and the Redis servers
590 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
591 case of MOVED into a DEFER case instead, thus moving the query onto the
592 next server in the list. For a cluster of N elements, all N servers must
593 be defined in redis_servers.
c39c8870 594
0800ef83
GF
595GF/02 Catch and remove uninitialized value warning in exiqsumm
596 Check for existence of @ARGV before looking at $ARGV[0]
597
459fca58
JH
598JH/01 Replace the store_release() internal interface with store_newblock(),
599 which internalises the check required to safely use the old one, plus
600 the allocate and data copy operations duplicated in both (!) of the
601 extant use locations.
602
944e8b37
JH
603JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
604 modifier. This matches the restriction on the commandline.
605
bbfb5dcd
JH
606JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
607 Previously only the last row was returned.
608
a05d3e34
JH
609JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
610 we assumed that tags in the header were well-formed, and parsed the
611 element content after inspecting only the first char of the tag.
612 Assumptions at that stage could crash the receive process on malformed
613 input.
614
ce93c6d8
JH
615JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
616 While running the DKIM ACL we operate on the Permanent memory pool so that
617 variables created with "set" persist to the DATA ACL. Also (at any time)
618 DNS lookups that fail create cache records using the Permanent pool. But
619 expansions release any allocations made on the current pool - so a dnsdb
620 lookup expansion done in the DKIM ACL releases the memory used for the
621 DNS negative-cache, and bad things result. Solution is to switch to the
622 Main pool for expansions.
623 While we're in that code, add checks on the DNS cache during store_reset,
624 active in the testsuite.
625 Problem spotted, and debugging aided, by Wolfgang Breyha.
626
2577f55f
JH
627JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
628 When none of the hosts presented to a transport match an already-open
629 connection, close it and proceed with the list. Previously we would
630 queue the message. Spotted by Lena with Yahoo, probably involving
631 round-robin DNS.
632
5b6f7658
JH
633JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
634 Previously a spurious "250 OK id=" response was appended to the proper
635 failure response.
636
c11d665d
JH
637JH/08 The "support for" informational output now, which built with Content
638 Scanning support, has a line for the malware scanner interfaces compiled
639 in. Interface can be individually included or not at build time.
e5ba8aa7
JH
640
641JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
642 by the template makefile "src/EDITME". The "STREAM" support for an older
643 ClamAV interface method is removed.
c11d665d 644
ba0e37b1
JH
645JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
646 rows affected is given instead).
647
96508de1
JH
648JH/11 The runtime Berkeley DB library version is now additionally output by
649 "exim -d -bV". Previously only the compile-time version was shown.
650
06fdb9f7
JH
651JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
652 SMTP connection. Previously, when one had more receipients than the
653 first, an abortive onward connection was made. Move to full support for
654 multiple onward connections in sequence, handling cutthrough connection
655 for all multi-message initiating connections.
656
f83a760f
JH
657JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
658 routers. Previously, a multi-recipient message would fail to match the
659 onward-connection opened for the first recipient, and cause its closure.
660
f1fed05b
JH
661JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
662 a timeout on read on a GnuTLS initiating connection, resulting in the
663 initiating connection being dropped. This mattered most when the callout
664 was marked defer_ok. Fix to keep the two timeout-detection methods
665 separate.
666
051d5efa
JH
667JH/15 Relax results from ACL control request to enable cutthrough, in
668 unsupported situations, from error to silently (except under debug)
669 ignoring. This covers use with PRDR, frozen messages, queue-only and
670 fake-reject.
671
cf3cd306
HSHR
672HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
673
744976d4
JH
674JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
675 metadata, resulting in a crash in free().
676
aab9a843 677PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 678 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 679 Broken also in d185889f4, with init system revamp.
7be14582 680
83d2a861
JH
681JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
682 Previously we abruptly closed the connection after reading a malware-
683 found indication; now we go on to read the "scan ok" response line,
684 and send a quit.
685
6741531c
JH
686JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
687 ACL. Previously, a crash would result.
688
85e03244
JH
689JH/19 Speed up macro lookups during configuration file read, by skipping non-
690 macro text after a replacement (previously it was only once per line) and
691 by skipping builtin macros when searching for an uppercase lead character.
692
c0635b6d
JH
693JH/20 DANE support moved from Experimental to mainline. The Makefile control
694 for the build is renamed.
695
b808677c
JH
696JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
697 was allocated for every new TLS startup, meaning one per message. Fix
698 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
699
6678c382
JH
700JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
701 reported the original. Fix to report (as far as possible) the ACL
702 result replacing the original.
703
dec766a1
WB
704JH/23 Fix memory leak during multi-message connections using STARTTLS under
705 OpenSSL. Certificate information is loaded for every new TLS startup,
706 and the resources needed to be freed.
707
15ae19f9
JH
708JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
709
e6532c4a
JH
710JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
711 was not propagated.
712
2556b3c6
SA
713JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
714 DATA response info to the (existing) per-recipient response info for
715 the "C=" log element. It can have useful tracking info from the
716 destination system. Patch from Simon Arlott.
717
fc8cd529
JH
718JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
719 length value. Previously this would segfault.
720
71bb51e0
HSHR
721HS/02 Support Avast multiline protoocol, this allows passing flags to
722 newer versions of the scanner.
723
e04bfa34
JH
724JH/28 Ensure that variables possibly set during message acceptance are marked
725 dead before release of memory in the daemon loop. This stops complaints
726 about them when the debug_store option is enabled. Discovered specifically
727 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
728 Do the same for the queue-runner and queue-list loops, for variables set
729 from spool message files. Do the same for the SMTP per-message loop, for
730 certain variables indirectly set in ACL operations.
e04bfa34 731
ecce6d9a
JH
732JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
733 as a multi-recipient message from a mailinglist manager). The coding had
734 an arbitrary cutoff number of characters while checking for more input;
735 enforced by writing a NUL into the buffer. This corrupted long / fast
736 input. The problem was exposed more widely when more pipelineing of SMTP
737 responses was introduced, and one Exim system was feeding another.
738 The symptom is log complaints of SMTP syntax error (NUL chars) on the
739 receiving system, and refused recipients seen by the sending system
740 (propating to people being dropped from mailing lists).
741 Discovered and pinpointed by David Carter.
742
c9cf9ac4
JH
743JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
744 replaced by the ${authresults } expansion.
745
b3b37076
JH
746JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
747
830832c9
HSHR
748HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
749 allows proper process termination in container environments.
750
f64e8b5f
JH
751JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
752 Previously the "final dot" had a newline after it; ensure it is CR,LF.
753
8f0776b5
JH
754JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
755 and "err_perm", deprecated since 4.83 when the RFC-defined words
756 "temperror" and "permerror" were introduced.
757
857eaf37
JH
758JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
759 transport-filters or DKIM-signing. The restriction was lost in the
760 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 761 Extend the restriction to also cover ARC-signing.
857eaf37 762
c85476e9
JH
763JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
764 in defer=pass mode supply a 450 to the initiator. Previously the message
765 would be spooled.
766
405074ad
PP
767PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
768 tls_require_ciphers is used as before.
769
eb445b04
HSHR
770HS/03 Malware Avast: Better match the Avast multiline protocol. Add
771 "pass_unscanned". Only tmpfails from the scanner are written to
772 the paniclog, as they may require admin intervention (permission
773 denied, license issues). Other scanner errors (like decompression
774 bombs) do not cause a paniclog entry.
ad93c40f 775
d342446f
JH
776JH/36 Fix reinitialisation of DKIM logging variable between messages.
777 Previously it was possible to log spurious information in receive log
778 lines.
779
a28050f8
JH
780JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
781 triggered odd behaviour from Outlook Express clients.
782
ddd16464
PP
783PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
784 suffix list.
785
321ef002
JH
786JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
787 since the IETF WG has not yet settled on that versus the original
788 "bare" representation.
789
3203e7ba
JH
790JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
791 Previously the millisecond value corrupted the output.
792 Fix also for syslog_pid=no and log_selector +pid, for which the pid
793 corrupted the output.
794
bbfb5dcd 795
acfc18c3
PP
796Exim version 4.90
797-----------------
798
799JH/01 Rework error string handling in TLS interface so that the caller in
800 more cases is responsible for logging. This permits library-sourced
801 string to be attached to addresses during delivery, and collapses
802 pairs of long lines into single ones.
803
856d1e16
PP
804PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
805 during configuration. Wildcards are allowed and expanded.
806
b9df1829
JH
807JH/02 Rework error string handling in DKIM to pass more info back to callers.
808 This permits better logging.
809
875512a3
JH
810JH/03 Rework the transport continued-connection mechanism: when TLS is active,
811 do not close it down and have the child transport start it up again on
812 the passed-on TCP connection. Instead, proxy the child (and any
813 subsequent ones) for TLS via a unix-domain socket channel. Logging is
814 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 815 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 816
fc3f96af
JH
817JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
818 identical IP addresses on different listening ports. Will also affect
819 "exiwhat" output.
820
98913c8e
BK
821PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
822 add noisy ifdef guards to special-case this sillyness.
823 Patch from Bernd Kuhls.
824
8d909960
JH
825JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
826 than 255 are no longer allowed.
827
7006ee24
JH
828JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
829 Disable the session-cache too, which might reduce our load. Since we
830 currrectly use a new context for every connection, both as server and
831 client, there is no benefit for these.
832 GnuTLS appears to not support tickets server-side by default (we don't
833 call gnutls_session_ticket_enable_server()) but client side is enabled
834 by default on recent versions (3.1.3 +) unless the PFS priority string
835 is used (3.2.4 +).
836
6e411084
PP
837PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
838 <https://reproducible-builds.org/specs/source-date-epoch/>.
839
4c2471ca
JH
840JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
841 the check for any unsuccessful recipients did not notice the limit, and
842 erroneously found still-pending ones.
843
4e910c01
JH
844JH/08 Pipeline CHUNKING command and data together, on kernels that support
845 MSG_MORE. Only in-clear (not on TLS connections).
846
42055a33
JH
847JH/09 Avoid using a temporary file during transport using dkim. Unless a
848 transport-filter is involved we can buffer the headers in memory for
849 creating the signature, and read the spool data file once for the
850 signature and again for transmission.
851
eeb35890
JH
852JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
853 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 854 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 855
b7d3afcf
JH
856JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
857 case where the routing stage had gathered several addresses to send to
858 a host before calling the transport for the first, we previously failed
859 to close down TLS in the old transport process before passing the TCP
860 connection to the new process. The new one sent a STARTTLS command
861 which naturally failed, giving a failed delivery and bloating the retry
862 database. Investigation and fix prototype from Wolfgang Breyha.
863
40525d07
JH
864JH/12 Fix check on SMTP command input synchronisation. Previously there were
865 false-negatives in the check that the sender had not preempted a response
866 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 867 awareness of the SMTP input buffering.
40525d07 868
f33875c3
PP
869PP/04 Add commandline_checks_require_admin option.
870 Exim drops privileges sanely, various checks such as -be aren't a
871 security problem, as long as you trust local users with access to their
872 own account. When invoked by services which pass untrusted data to
873 Exim, this might be an issue. Set this option in main configuration
874 AND make fixes to the calling application, such as using `--` to stop
875 processing options.
876
a5ffa9b4
JH
877JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
878 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
879 responses to those, into a single TLS record each way (this usually means
880 a single packet). As a side issue, smtp_enforce_sync now works on TLS
881 connections.
925ac8e4 882
6600985a
PP
883PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
884 affects you only if you're dancing at the edge of the param size limits.
885 If you are, and this message makes sense to you, then: raise the
886 configured limit or use OpenSSL 1.1. Nothing we can do for older
887 versions.
888
ac4d558b
JH
889JH/14 For the "sock" variant of the malware scanner interface, accept an empty
890 cmdline element to get the documented default one. Previously it was
891 inaccessible.
892
e69636bc
JH
893JH/15 Fix a crash in the smtp transport caused when two hosts in succession
894 are unsuable for non-message-specific reasons - eg. connection timeout,
895 banner-time rejection.
896
a843a57e
JH
897JH/16 Fix logging of delivery remote port, when specified by router, under
898 callout/hold.
899
8e041ae0
PP
900PP/06 Repair manualroute's ability to take options in any order, even if one
901 is the name of a transport.
833c70bc
PP
902 Fixes bug 2140.
903
35a04365
HSHR
904HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
905
4226691b
JH
906JH/17 Change the list-building routines interface to use the expanding-string
907 triplet model, for better allocation and copying behaviour.
908
d185889f
JH
909JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
910 Previously it was constructed the first time a possibly-matching string
911 was met in the configuration file input during startup; now it is done
912 during compilation.
913
0a6c178c
JH
914JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
915 compatible one, to avoid the (poorly documented) possibility of a config
916 file in the working directory redirecting the DB files, possibly correpting
02745400 917 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 918
fae8970d
JH
919JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
920 cache-hot. Previously, although the result was properly cached, the
921 initial verify call returned a defer.
922
ad1a76fe 923JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
924 the main verify for receipient in uncached-mode.
925
ad1a76fe
JH
926JH/22 Retire historical build files to an "unsupported" subdir. These are
927 defined as "ones for which we have no current evidence of testing".
928
135e9496
JH
929JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
930 if present. Previously it was ignored.
931
f2ed27cf
JH
932JH/24 Start using specified-initialisers in C structure init coding. This is
933 a C99 feature (it's 2017, so now considered safe).
934
7eb0e5d2
JH
935JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
936 if was a fixed-sized field and bitmask ops via macros; it is now more
937 extensible.
938
4f9f4be4
939PP/07 GitHub PR 56: Apply MariaDB build fix.
940 Patch provided by Jaroslav Škarvada.
941
dc4de9cc
PP
942PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
943 during Coverity cleanups [4.87 JH/47]
944 Diagnosis and fix provided by Michael Fischer v. Mollard.
945
ea18931d
JH
946JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
947 the right size to place the terminating semicolon on its own folded
948 line, the header hash was calculated to an incorrect value thanks to
949 the (relaxed) space the fold became.
950
0768462d 951HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
952 and confused the parent.
953
848214f7
JH
954JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
955 which could crash as a result. This could lead to undeliverable messages.
956
9e0ed81f
JH
957JH/28 Logging: "next input sent too soon" now shows where input was truncated
958 for log purposes.
959
2540f2f8
JH
960JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
961 matters on fast-turnover and PID-randomising systems, which were getting
962 out-of-order delivery.
963
e5ab0ba9
JH
964JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
965 a possibly-overlapping copy. The symptom was that "Remote host closed
966 connection in response to HELO" was logged instead of the actual 4xx
967 error for the HELO.
968
e99a3a6c
JH
969JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
970 Previously only that bufferd was discarded, resulting in SYMTP command
971 desynchronisation.
972
18067c75
JH
973JH/32 DKIM: when a message has multiple signatures matching an identity given
974 in dkim_verify_signers, run the dkim acl once for each. Previously only
975 one run was done. Bug 2189.
976
72934ba7
JH
977JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
978 "panic the current process" to "deliberately defer". The panic log is
979 still written with the problem list name; the mail and reject logs now
980 get a temp-reject line for the message that was being handled, saying
981 something like "domains check lookup or other defer". The SMTP 451
982 message is still "Temporary local problem".
983
625667b6
JH
984JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
985 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
986 freed. CVE-2017-16943.
987
988HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
989 from SMTP input. Previously it was always done; now only done for DATA
990 and not BDAT commands. CVE-2017-16944.
625667b6 991
d21bf202
JH
992JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
993 to the message (such as an overlong header line). Previously this was
994 not done and we did not exit BDAT mode. Followon from the previous item
995 though a different problem.
996
acfc18c3 997
fd047340 998Exim version 4.89
acfc18c3 999-----------------
4c57a40e 1000
9427e879 1001JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 1002 than -2003 did; needs libidn2 in addition to libidn.
fd047340 1003
7b283890
JH
1004JH/02 The path option on a pipe transport is now expanded before use.
1005
4c57a40e
PP
1006PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
1007 Patch provided by "Björn", documentation fix added too.
1008
5d036699
JH
1009JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
1010 missing a wire-to-host endian conversion.
1011
f4630439
JH
1012JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
1013 close after a BDAT command line could be taken as a following command,
1014 giving a synch failure. Fix by only checking for synch immediately
1015 before acknowledging the chunk.
1016
f988ce57
JS
1017PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
1018 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
1019 macro. Patches provided by Josh Soref.
1020
bd8fbe36
JH
1021JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
1022 Previously we did not; the RFC seems ambiguous and VRFY is not listed
1023 by IANA as a service extension. However, John Klensin suggests that we
1024 should.
1025
1026JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
1027 the dkim code may be unix-mode line endings rather than smtp wire-format
1028 CRLF, so prepend a CR to any bare LF.
fd047340 1029
bd8fbe36 1030JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
1031 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
1032
bd8fbe36
JH
1033JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
1034 the first were themselves being wrongly included in the feed into dkim
1035 processing; with most chunk sizes in use this resulted in an incorrect
1036 body hash calculated value.
1037
eea19017
JH
1038JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
1039 DKIM signature block, for verification. Although advised against by
1040 standards it is specifically not ruled illegal.
1041
44e6651b
JH
1042JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
1043
1044JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
1045 missing a body hash (the bh= tag).
1046
1047JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
1048 It seems that HAProxy sends the Proxy Protocol information in clear and
1049 only then does a TLS startup, so do the same.
1050
1051JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
1052 TCP connections (such as for Spamd) unless the daemon successfully set
1053 Fast Open mode on its listening sockets. This fixes breakage seen on
1054 too-old kernels or those not configured for Fast Open, at the cost of
1055 requiring both directions being enabled for TFO, and TFO never being used
1056 by non-daemon-related Exim processes.
1057
1058JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
1059 endings, at least on the first header line. Try to canonify any that get
1060 past that check, despite the cost.
1061
b6040544
JH
1062JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
1063 now limited to an arbitrary five deep, while parsing addresses with the
1064 strip_excess_angle_brackets option enabled.
1065
f700ea4d
PP
1066PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
1067 instead leave the unprompted TLS handshake in socket buffer for the
1068 TLS library to consume.
1069
da88acae
PP
1070PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
1071
f6ef9370
PP
1072PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
1073
90341c71
JH
1074JH/16 Drop variables when they go out of scope. Memory management drops a whole
1075 region in one operation, for speed, and this leaves assigned pointers
1076 dangling. Add checks run only under the testsuite which checks all
1077 variables at a store-reset and panics on a dangling pointer; add code
1078 explicitly nulling out all the variables discovered. Fixes one known
1079 bug: a transport crash, where a dangling pointer for $sending_ip_address
1080 originally assigned in a verify callout, is re-used.
1081
1ec2ab36
PP
1082PP/06 Drop '.' from @INC in various Perl scripts.
1083
1084PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
1085
1086PP/08 Reduce a number of compilation warnings under clang; building with
1087 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
1088 should be warning-free.
1089
8b2b9480
PP
1090JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
1091
1092HS/01 Fix portability problems introduced by PP/08 for platforms where
1093 realloc(NULL) is not equivalent to malloc() [SunOS et al].
1094
d953610f
HSHR
1095HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
1096 chunk. This allows us to accept broken chunked messages. We need a more
1097 general solution here.
1098
7dc5f827
PP
1099PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
1100 already-broken messages in the queue.
1101
4bb432cb
PP
1102JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
1103
3b1a84c8
PP
1104JH/19 Fix reference counting bug in routing-generated-address tracking.
1105
902fbd69 1106
8d042305
JH
1107Exim version 4.88
1108-----------------
4c57a40e 1109
9094b84b
JH
1110JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
1111 supports it and a size is available (ie. the sending peer gave us one).
8d042305 1112
03d5892b
JH
1113JH/02 The obsolete acl condition "demime" is removed (finally, after ten
1114 years of being deprecated). The replacements are the ACLs
1115 acl_smtp_mime and acl_not_smtp_mime.
1116
4b0fe319
JH
1117JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
1118 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
1119 or even an in-clear connection were permitted. Now, if the host lookup
1120 was dnssec and dane was requested then the host is only used if the
1121 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
1122 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
1123 if one fails this test.
1124 This means that a poorly-configured remote DNS will make it incommunicado;
1125 but it protects against a DNS-interception attack on it.
1126
789f8a4f
JH
1127JH/04 Bug 1810: make continued-use of an open smtp transport connection
1128 non-noisy when a race steals the message being considered.
1129
23bb6982 1130JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 1131 self-signed certificate for inbound TLS connections.
23bb6982 1132
0bd1b1ed 1133JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 1134 in rewrites and routers.
0bd1b1ed 1135
20b9a2dc
JH
1136JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
1137 and logged a warning sing 4.83; now they are a configuration file error.
1138
05392bbc
JH
1139JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
1140 (lacking @domain). Apply the same qualification processing as RCPT.
1141
1a6230a3
JH
1142JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
1143
cfab9d68
JH
1144JH/10 Support ${sha256:} applied to a string (as well as the previous
1145 certificate).
1146
98c82a3d
JH
1147JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
1148 a cutthrough deliver is pending, as we always want to make a connection.
1149 This also avoids re-routing the message when later placing the cutthrough
1150 connection after a verify cache hit.
1151 Do not update it with the verify result either.
1152
1153JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
1154 when routing results in more than one destination address.
1155
ae8386f0
JH
1156JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
1157 signing (which inhibits the cutthrough capability). Previously only
1158 the presence of an option was tested; now an expansion evaluating as
1159 empty is permissible (obviously it should depend only on data available
1160 when the cutthrough connection is made).
1161
0d9fa8c0
JH
1162JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
1163 the relevant preceding SMTP command did not note the pipelining mode.
1164
3581f321
JH
1165JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
1166 Previously they were not counted.
1167
ef3a1a30
JH
1168JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
1169 as one having no matching records. Previously we deferred the message
1170 that needed the lookup.
1171
4c04137d 1172JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
1173 distinguished as "(=".
1174
1435d4b2
JH
1175JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1176 for missing MX records. Previously it only worked for missing A records.
1177
eea0defe
JB
1178JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1179
1180JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1181 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 1182
4c04137d 1183JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
1184 even for a "none" policy. Patch from Tony Meyer.
1185
1c788856
JH
1186JH/22 Fix continued use of a connection for further deliveries. If a port was
1187 specified by a router, it must also match for the delivery to be
1188 compatible.
1189
e3b1f624
JH
1190JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1191 When one of the recipients of a message was unsuitable for the connection
1192 (has no matching addresses), we lost track of needing to mark it
1193 deferred. As a result mail would be lost.
1194
a57ce043
JH
1195JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1196
f59aaaaa 1197JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
1198 takes up less space and should be simpler to maintain. Merge the ACL
1199 condition decode tables also, with similar effect.
d7bed771 1200
d1f9fb42
JH
1201JH/26 Fix problem with one_time used on a redirect router which returned the
1202 parent address unchanged. A retry would see the parent address marked as
1203 delivered, so not attempt the (identical) child. As a result mail would
1204 be lost.
1205
92b0827a
JH
1206JH/27 Fix a possible security hole, wherein a process operating with the Exim
1207 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1208 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1209 itself :(
1210
ddf1b11a
JH
1211JH/28 Enable {spool,log} filesystem space and inode checks as default.
1212 Main config options check_{log,spool}_{inodes,space} are now
1213 100 inodes, 10MB unless set otherwise in the configuration.
1214
3cc3f762
JH
1215JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1216 Previously it only applied to the main-section connection policy
1217 options.
1218
ae5afa61
JH
1219JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1220
317e40ac
PP
1221PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1222 by me. Added RFC7919 DH primes as an alternative.
1223
8b0fb68e
PP
1224PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1225 are not in the system include path.
1226
ad7fc6eb 1227JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 1228 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
1229 Exim did stdio operations after fclose. This was exposed by a recent
1230 change which nulled out the file handle after the fclose.
ad7fc6eb 1231
ee5b1e28
JH
1232JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1233 signed directly by the cert-signing cert, rather than an intermediate
1234 OCSP-signing cert. This is the model used by LetsEncrypt.
1235
5ddc9771
JH
1236JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1237
8d73599f
JH
1238HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1239 an incoming connection.
1240
446415f5
HSHR
1241HS/02 Bug 1802: Do not half-close the connection after sending a request
1242 to rspamd.
1243
8e53a4fc
HSHR
1244HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1245 fallback to "prime256v1".
8d042305 1246
87cb4a16 1247JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 1248 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
1249
1250
0d9b78be
JH
1251Exim version 4.87
1252-----------------
4c57a40e 1253
82d14d6a
JH
1254JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1255 and 3.4.4 - once the server is enabled to respond to an OCSP request
1256 it does even when not requested, resulting in a stapling non-aware
1257 client dropping the TLS connection.
0d9b78be 1258
6c6d6e48
TF
1259TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1260 support variable-length bit vectors. No functional change.
1261
ac881e27
TF
1262TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1263 The I= interface field on outgoing lines is now after the H= remote
1264 host field, same as incoming lines. There is a separate
1265 outgoing_interface log selector which allows you to disable the
1266 outgoing I= field.
1267
c8899c20
JH
1268JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1269 If not running log_selector +smtp_connection the mainlog would be held
1270 open indefinitely after a "too many connections" event, including to a
1271 deleted file after a log rotate. Leave the per net connection logging
1272 leaving it open for efficiency as that will be quickly detected by the
1273 check on the next write.
1274
f1b81d81
HSHR
1275HS/01 Bug 1671: Fix post transport crash.
1276 Processing the wait-<transport> messages could crash the delivery
1277 process if the message IDs didn't exist for some reason. When
1278 using 'split_spool_directory=yes' the construction of the spool
1279 file name failed already, exposing the same netto behaviour.
1280
f38917cc
JH
1281JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1282 mime_regex ACL conditions.
1283
895fbaf2
JH
1284JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1285 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1286 to HELO, local diagnostic string.
1287
805bb5c3
JH
1288JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1289 log line to debug. Even when configured with a tls authenticator many
1290 client connections are expected to not authenticate in this way, so
1291 an authenticate fail is not an error.
1292
56c2a7be
HSHR
1293HS/02 Add the Exim version string to the process info. This way exiwhat
1294 gives some more detail about the running daemon.
1295
4c04137d 1296JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
1297 matter for fast-change records such as DNSBLs.
1298
6f6dedcc
JH
1299JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1300 retry record, even if constant. There may be multiple transports with
1301 different interface settings and the retry behaviour needs to be kept
1302 distinct.
1303
0f557e90
JH
1304JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1305
1306JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1307
ec0eb1a3
JH
1308JH/10 Bug 840: fix log_defer_output option of pipe transport
1309
41e93589
JH
1310JH/11 Bug 830: use same host for all RCPTS of a message, even under
1311 hosts_randomize. This matters a lot when combined with mua_wrapper.
1312
98b98887 1313JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
1314 ${quote_pgsql:<string>} operator.
1315
98b98887
JH
1316JH/13 Bug 1708: avoid misaligned access in cached lookup.
1317
858e91c2
JH
1318JH/14 Change header file name for freeradius-client. Relevant if compiling
1319 with Radius support; from the Gentoo tree and checked under Fedora.
1320
1321JH/15 Bug 1712: Introduce $prdr_requested flag variable
1322
6ff55e50
JH
1323JH/16 Bug 1714: Permit an empty string as expansion result for transport
1324 option transport_filter, meaning no filtering.
1325
3b957582
JB
1326JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1327
23f3dc67
JH
1328JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1329 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 1330 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
1331 If a server certificate is not supplied (via tls_certificate) an error is
1332 logged, and clients will find TLS connections fail on startup. Presumably
1333 they will retry in-clear.
1334 Packagers of Exim are strongly encouraged to create a server certificate
1335 at installation time.
1336
240c288f
JH
1337HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1338 with the $config_file variable.
1339
5ef5dd52
JB
1340JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1341 in transport context, after the attempt, and per-recipient. The latter type
1342 is per host attempted. The event data is the error message, and the errno
1343 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 1344 and the trailing two digits of the smtp 4xx response.
5ef5dd52 1345
e161710d
GF
1346GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1347 to write to mainlog (or rejectlog, paniclog) in the window between file
1348 creation and permissions/ownership being changed. Particularly affects
1349 installations where exicyclog is run as root, rather than exim user;
1350 result is that the running daemon panics and dies.
1351
a159f203
JH
1352JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1353
7f06582c
JH
1354JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1355 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1356 "pri" and "weight". Note that the previous implicit priority given by the
1357 list order is no longer honoured.
1358
4c04137d 1359JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
1360 for DKIM processing.
1361
f0989ec0
JH
1362JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1363 by defining SUPPORT_SOCKS.
74f150bf 1364
cee5f132
JH
1365JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1366 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
1367 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1368 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 1369
8c5d388a
JH
1370JH/27 Move Internationalisation support from Experimental to mainline, enabled
1371 for a build by defining SUPPORT_I18N
1372
2d8d625b
JH
1373JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1374 of the query string, and make ${quote_redis:} do that quoting.
1375
0cbf2b82
JH
1376JH/29 Move Events support from Experimental to mainline, enabled by default
1377 and removable for a build by defining DISABLE_EVENT.
1378
f2f2c91b
JH
1379JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1380
ce325893
JH
1381JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1382 cached by the daemon.
1383
de78e2d5
JH
1384JH/32 Move Redis support from Experimental to mainline, enabled for a build
1385 by defining LOOKUP_REDIS. The libhiredis library is required.
1386
379ba7d0
JH
1387JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1388 keys are given for lookup.
1389
f444c2c7
JH
1390JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1391 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1392 only supported when built with TLS support. The PolarSSL SHA routines
1393 are still used when the TLS library is too old for convenient support.
f444c2c7 1394
a57b6200
JH
1395JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1396 openssl_options), for security. OpenSSL forces this from version 1.1.0
1397 server-side so match that on older versions.
1398
07c73177 1399JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1400 allocation for $value could be released as the expansion processing
07c73177 1401 concluded, but leaving the global pointer active for it.
fa01e4f8 1402
4f6ae5c3
JH
1403JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1404 and to use the domains and local_parts ACL conditions.
1405
1bc460a6
JH
1406JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1407 incorrectly not doubled on cutthrough transmission, hence seen as a
1408 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1409 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1410 via the normal store-and-forward channel. This could result in duplicates
1411 received - but deduplicating mailstores were liable to retain only the
1412 initial truncated version.
1413
ab9152ff 1414JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1415
67e87fcf
JH
1416JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1417
ab9152ff
JH
1418JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1419 we're in there, support oversigning also; bug 1309.
1420
af483912
JH
1421JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1422
bc3c7bb7 1423HS/04 Add support for keep_environment and add_environment options.
df3def24 1424
13559da6
JH
1425JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1426 either intentional arithmetic overflow during PRNG, or testing config-
1427 induced overflows.
1428
59eaad2b
JH
1429JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1430 delivery resulted in actual delivery. Cancel cutthrough before DATA
1431 stage.
1432
f9334a28
JH
1433JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1434 rejects a recipient: pass the reject to the originator.
1435
dc8091e7
JH
1436JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1437 Many were false-positives and ignorable, but it's worth fixing the
1438 former class.
1439
dfe7d917
JH
1440JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1441 for the new environment-manipulation done at startup. Move the routines
1442 from being local to tls.c to being global via the os.c file.
1443
93cc2d6e
JH
1444JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1445 an extract embedded as result-arg for a map, the first arg for extract
1446 is unavailable so we cannot tell if this is a numbered or keyed
1447 extraction. Accept either.
1448
13559da6 1449
9c695f6d
JH
1450Exim version 4.86
1451-----------------
4c57a40e 1452
9c695f6d
JH
1453JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1454 expanded.
1455
506900af
JH
1456JH/02 The smtp transport option "multi_domain" is now expanded.
1457
ad07e9ad
JH
1458JH/03 The smtp transport now requests PRDR by default, if the server offers
1459 it.
1460
01a4a5c5 1461JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1462 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1463 can be used to disable this per-host. The build option
1464 EXPERIMENTAL_CERTNAMES is withdrawn.
1465
cb1d7830 1466JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1467 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1468 For GnuTLS, only version 3.0.20 or later.
1469
610ff438 1470JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1471 (but not required) by default. The verification status is now logged by
1472 default, for both outbound TLS and client-certificate supplying inbound
1473 TLS connections
610ff438 1474
f926e272
JH
1475JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1476 sites use this now.
1477
50dc7409
JH
1478JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1479 Status Notification (bounce) messages are now MIME format per RFC 3464.
1480 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1481 under the control of the dsn_advertise_hosts option, and routers may
1482 have a dsn_lasthop option.
1483
0f0c8159
JH
1484JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1485 default, modifiable by a malware= option. The list separator for
23763898 1486 the options can now be changed in the usual way. Bug 68.
4e71661f 1487
1ad6489e
JH
1488JH/10 The smtp_receive_timeout main option is now expanded before use.
1489
aeaf5db3
JH
1490JH/11 The incoming_interface log option now also enables logging of the
1491 local interface on delivery outgoing connections.
1492
5032d1cf
JH
1493JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1494 if the interface and destination host and port all match.
1495
7e8360e6
JH
1496JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1497 /defer_ok option.
1498
c5f280e2
AL
1499JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1500 Patch from Andrew Lewis.
1501
fd4d8871 1502JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1503 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1504 modifiers per server. Patch originally by <rommer@active.by>.
1505
1506JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1507 and remote servers. Remote servers can be IPv6 addresses, and
1508 specify a port-range.
fd4d8871 1509
23763898
JH
1510JH/17 Bug 68: The spamd_address main option now supports an optional
1511 timeout value per server.
1512
2ad78978
JH
1513JH/18 Bug 1581: Router and transport options headers_add/remove can
1514 now have the list separator specified.
1515
8a512ed5 1516JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1517 option values.
8a512ed5 1518
82c0c8ea 1519JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1520 under OpenSSL.
1521
cc00f4af
JH
1522JH/21 Support for the A6 type of dns record is withdrawn.
1523
82c0c8ea
JH
1524JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1525 rather than the verbs used.
1526
b980ed83
JH
1527JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1528 from 255 to 1024 chars.
1529
6c9ed72e
JH
1530JH/24 Verification callouts now attempt to use TLS by default.
1531
cfab9d68 1532HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1533 are generic router options now. The defaults didn't change.
50dc7409 1534
f846c8f5
JH
1535JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1536 Original patch from Alexander Shikoff, worked over by JH.
1537
fd4c285c
HSHR
1538HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1539 files if ZCAT_COMMAND is not executable.
1540
4c04137d 1541JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1542
d2a2c69b
JH
1543JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1544
8241d8dd
JH
1545JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1546 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1547 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1548 (and we were inconsistent anyway for A-only vs AAAA+A).
1549
1f12df4d
JH
1550JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1551
1f155f8e
JH
1552JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1553 when evaluating $sender_host_dnssec.
1554
1705dd20
JH
1555JH/31 Check the HELO verification lookup for DNSSEC, adding new
1556 $sender_helo_dnssec variable.
1557
038597d2
PP
1558JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1559
474f71bf
JH
1560JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1561
7137ca4b
JH
1562JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1563
dcb1095c
JH
1564JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1565 documented as working, but never had. Support all but $spam_report.
1566
2f460950
JH
1567JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1568 added for tls authenticator.
1569
2f680c0c
HSHR
1570HS/03 Add perl_taintmode main config option
1571
9c695f6d 1572
e449c3b0
TL
1573Exim version 4.85
1574-----------------
4c57a40e 1575
e449c3b0
TL
1576TL/01 When running the test suite, the README says that variables such as
1577 no_msglog_check are global and can be placed anywhere in a specific
1578 test's script, however it was observed that placement needed to be near
1579 the beginning for it to behave that way. Changed the runtest perl
1580 script to read through the entire script once to detect and set these
1581 variables, reset to the beginning of the script, and then run through
1582 the script parsing/test process like normal.
1583
ac20058f
TL
1584TL/02 The BSD's have an arc4random API. One of the functions to induce
1585 adding randomness was arc4random_stir(), but it has been removed in
1586 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1587 function when detected.
1588
a9b8ec8b
JH
1589JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1590 cause callback expansion.
1591
6286d7c4
TL
1592TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1593 syntax errors in an expansion can be treated as a string instead of
1594 logging or causing an error, due to the internal use of bool_lax
1595 instead of bool when processing it.
1596
0f06b4f2 1597JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1598 server certificates when making smtp deliveries.
1599
be36e572
JH
1600JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1601
ac4ef9bd
JH
1602JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1603
0eb51736
TL
1604TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1605
c713ca4b
TL
1606TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1607 Merged patch from Sebastian Wiedenroth.
e449c3b0 1608
bd21a787
WB
1609JH/05 Fix results-pipe from transport process. Several recipients, combined
1610 with certificate use, exposed issues where response data items split
1611 over buffer boundaries were not parsed properly. This eventually
1612 resulted in duplicates being sent. This issue only became common enough
4c04137d 1613 to notice due to the introduction of connection certificate information,
bd21a787
WB
1614 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1615
8bc732e8
JH
1616JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1617 size buffer was used, resulting in syntax errors when an expansion
1618 exceeded it.
1619
a7fec7a7
JH
1620JH/07 Add support for directories of certificates when compiled with a GnuTLS
1621 version 3.3.6 or later.
1622
4c04137d 1623JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1624 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1625 both become "event_action", the variables become $event_name, $event_data
aec45841 1626 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1627 routers, transports and related events. The tls:cert event is now also
1628 raised for inbound connections, if the main configuration event_action
1629 option is defined.
774ef2d7 1630
eca4debb
TL
1631TL/06 In test suite, disable OCSP for old versions of openssl which contained
1632 early OCSP support, but no stapling (appears to be less than 1.0.0).
1633
8d692470
JH
1634JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1635 server certificate names available under the smtp transport option
1636 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1637 matches.
1638
e9477a08
JH
1639JH/10 Time-related extraction expansions from certificates now use the main
1640 option "timezone" setting for output formatting, and are consistent
1641 between OpenSSL and GnuTLS compilations. Bug 1541.
1642
ad4c5ff9
JH
1643JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1644 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1645
1646JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1647 include certificate info, eximon was claiming there were spoolfile
1648 syntax errors.
1649
3394b36a 1650JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1651
1652JH/14 Log delivery-related information more consistently, using the sequence
1653 "H=<name> [<ip>]" wherever possible.
1654
3394b36a
TL
1655TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1656 are problematic for Debian distribution, omit them from the release
1657 tarball.
1658
ad4c5ff9
JH
1659JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1660
4c04137d 1661JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1662 Bug 1561.
1663
1664JH/17 Fix a null-indirection in certextract expansions when a nondefault
1665 output list separator was used.
1666
8bc732e8 1667
1f0ebb98
TL
1668Exim version 4.84
1669-----------------
09728d20
TL
1670TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1671 checkers that were complaining about end of non-void function with no
1672 return.
1f0ebb98 1673
a612424f 1674JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1675 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1676
1677JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1678
1679TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1680 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1681
1f0ebb98 1682
c0e56233
TF
1683Exim version 4.83
1684-----------------
1685
1686TF/01 Correctly close the server side of TLS when forking for delivery.
1687
1688 When a message was received over SMTP with TLS, Exim failed to clear up
1689 the incoming connection properly after forking off the child process to
1690 deliver the message. In some situations the subsequent outgoing
1691 delivery connection happened to have the same fd number as the incoming
1692 connection previously had. Exim would try to use TLS and fail, logging
1693 a "Bad file descriptor" error.
1694
7245734e
TF
1695TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1696 utilities have not been installed.
1697
fd5dad68
JH
1698JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1699 temporary space as the ACL may create new global variables.
1700
5428a946
TL
1701TL/01 LDAP support uses per connection or global context settings, depending
1702 upon the detected version of the libraries at build time.
1703
a3c86431
TL
1704TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1705 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1706 were a direct connection from the outside internet. PPv2 support was
1707 updated based on HAProxy spec change in May 2014.
a3c86431 1708
aa26e137
JH
1709JH/02 Add ${listextract {number}{list}{success}{fail}}.
1710
5a1b8443
WB
1711TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1712 Properly escape header and check for NULL return.
1713
72c9e342
PP
1714PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1715 not dns_use_dnssec.
1716
76f44207
WB
1717JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1718
770747fd
MFM
1719TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1720 characters in header names, implemented as a verify condition.
1721 Contributed by Michael Fischer v. Mollard.
1722
8ddef691 1723TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1724 results permerror and temperror. Previous values are deprecated but
1725 still accepted. In a future release, err_perm and err_temp will be
1726 completely removed, which will be a backward incompatibility if the
1727 ACL tests for either of these two old results. Patch contributed by
8ddef691 1728 user bes-internal on the mailing list.
c0e56233 1729
b9c2e32f
AR
1730JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1731
e45a1c37
JH
1732JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1733 selectors, in both main and reject logs.
1734
67d81c10
JH
1735JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1736 failed delivery.
1737
b1f8e4f8
JH
1738JH/07 Add malware type "sock" for talking to simple daemon.
1739
511a6c14 1740JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1741
1742JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1743 routers/transports under cutthrough routing.
214042d2 1744
51c7471d
JH
1745JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1746 numbers. Touch up "bool" conditional to keep the same definition.
1747
3695be34
TL
1748TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1749
1e06383a
TL
1750JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1751
76146973
JH
1752JH/12 Expand items in router/transport headers_add or headers_remove lists
1753 individually rather than the list as a whole. Bug 1452.
1754
1755 Required for reasonable handling of multiple headers_ options when
1756 they may be empty; requires that headers_remove items with embedded
1757 colons must have them doubled (or the list-separator changed).
1758
8c8b8274
TL
1759TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1760 view the policy declared in the DMARC record. Currently, $dmarc_status
1761 is a combined value of both the record presence and the result of the
1762 analysis.
b1f8e4f8 1763
35aba663
JH
1764JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1765
8c51eead 1766JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1767 dnslookup router and the smtp transport (applying to the forward
1768 lookup).
8c51eead 1769
deae092e
HS
1770TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1771 of ldap servers used for a specific lookup. Patch provided by Heiko
1772 Schlichting.
35aba663 1773
fd3b6a4a 1774JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1775 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1776
8d91c6dc
LT
1777TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1778 Patch submitted by Lars Timman.
1779
2b4a568d
JH
1780JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1781
d2af03f4
HS
1782TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1783 Requires trusted mode and valid format message id, aborts otherwise.
1784 Patch contributed by Heiko Schlichting.
1785
9d1c15ef
JH
1786JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1787 certextract with support for various fields. Bug 1358.
1788
44662487
JH
1789JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1790 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1791 hosts_request_ocsp.
1792
ed3bba5f 1793JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1794 operate on certificate variables to give certificate fingerprints
9ef9101c 1795 Also new ${sha256:cert_variable}.
44662487 1796
8ccd00b1
JH
1797JH/23 The PRDR feature is moved from being Experimental into the mainline.
1798
8ded8589
TL
1799TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1800 Christian Aistleitner.
1801
f2de3a33
JH
1802JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1803
6eb02f88
TL
1804TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1805 file. Patch from Wolfgang Breyha.
1806
00bff6f6
JH
1807JH/25 Expand the coverage of the delivery $host and $host_address to
1808 client authenticators run in verify callout. Bug 1476.
1809
071c51f7
JH
1810JH/26 Port service names are now accepted for tls_on_connect_ports, to
1811 align with daemon_smtp_ports. Bug 72.
1812
a6d4c44e
TF
1813TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1814 support and error reporting did not work properly.
1815
3ae173e7
ACK
1816TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1817 and is readable. Patch from Andrew Colin Kissa.
1818
c13d09b8
TL
1819TL/14 Enhance documentation of ${run expansion and how it parses the
1820 commandline after expansion, particularly in the case when an
1821 unquoted variable expansion results in an empty value.
1822
0df4ab80
JH
1823JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1824
66be95e0
PP
1825PP/02 Fix internal collision of T_APL on systems which support RFC3123
1826 by renaming away from it. Addresses GH issue 15, reported by
1827 Jasper Wallace.
1828
1bd0d12b
JH
1829JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1830
0de7239e
TL
1831TL/15 SECURITY: prevent double expansion in math comparison functions
1832 (can expand unsanitized data). Not remotely exploitable.
1833 CVE-2014-2972
1834
fd3b6a4a 1835
2c422e6f 1836Exim version 4.82
98a90c36
PP
1837-----------------
1838
1839PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1840
12f69989
PP
1841PP/02 Make -n do something, by making it not do something.
1842 When combined with -bP, the name of an option is not output.
1843
54c90be1
PP
1844PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1845 by GnuTLS.
1846
1f4a55da
PP
1847PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1848 $sender_host_name and config options to manage this, and basic check
1849 routines.
1850
13363eba 1851PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1852
66645890 1853PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1854 (Only plugin which currently uses this is kerberos4, which nobody should
1855 be using, but we should make it available and other future plugins might
1856 conceivably use it, even though it would break NAT; stuff *should* be
1857 using channel bindings instead).
66645890 1858
a3fb9793 1859PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1860 name; added for Sendmail compatibility; requires admin caller.
1861 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1862 just ignore it); requires trusted caller.
a3fb9793 1863 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1864 Bugzilla 1117.
a3fb9793 1865
d27f98fe 1866TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1867
6822b909
TL
1868TL/02 Add +smtp_confirmation as a default logging option.
1869
e7568d51
TL
1870TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1871 Patch by Magnus Holmgren from 2007-02-20.
1872
ae0e32ee 1873TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1874 Bugzilla 1283 - Spec typo.
97f42f10 1875 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1876
1877TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1878
e2658fff
TL
1879TL/06 Add Experimental DMARC support using libopendmarc libraries.
1880
83712b39
TL
1881TL/07 Fix an out of order global option causing a segfault. Reported to dev
1882 mailing list by by Dmitry Isaikin.
1883
976b7e9f
JH
1884JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1885
be4a1376
JH
1886JH/02 Support "G" suffix to numbers in ${if comparisons.
1887
ec4b68e5
PP
1888PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1889
d7148a07
NM
1890NM/01 Bugzilla 1197 - Spec typo
1891 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1892
585121e2 1893JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1894
2519e60d
TL
1895PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1896 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1897 function.
a5f239e4 1898
13d08c90
PP
1899PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1900 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1901
bef3ea7f
JH
1902JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1903 "acl {{name}{arg}...}", and optional args on acl condition
1904 "acl = name arg..."
a5f239e4 1905
846726c5
JH
1906JH/05 Permit multiple router/transport headers_add/remove lines.
1907
3a796370
JH
1908JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1909
ea722490 1910JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1911 Performance patch from Paul Fisher. Bugzilla 1262.
1912
b1b05573
JH
1913JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1914 Bugzilla 884.
1915
362145b5
JH
1916JH/09 Add $headers_added variable, with content from use of ACL modifier
1917 add_header (but not yet added to the message). Bugzilla 199.
1918
3c0a92dc
JH
1919JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1920 Pulled from Bugzilla 817 by Wolfgang Breyha.
1921
6d7c6175
PP
1922PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1923 CVE-2012-5671
e78e6ecf 1924 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1925
6f123593
JH
1926JH/11 Add A= logging on delivery lines, and a client_set_id option on
1927 authenticators.
1928
c8e2fc1e
JH
1929JH/12 Add optional authenticated_sender logging to A= and a log_selector
1930 for control.
1931
005ac57f
PP
1932PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1933
3f1df0e3
PP
1934PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1935 advertise SMTP AUTH mechanism to us, instead of a generic
1936 protocol violation error. Also, make Exim more robust to bad
1937 data from the Dovecot auth socket.
1938
67bd1ab3
TF
1939TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1940
1941 When a queue runner is handling a message, Exim first routes the
1942 recipient addresses, during which it prunes them based on the retry
1943 hints database. After that it attempts to deliver the message to
1944 any remaining recipients. It then updates the hints database using
1945 the retry rules.
1946
1947 So if a recipient address works intermittently, it can get repeatedly
1948 deferred at routing time. The retry hints record remains fresh so the
1949 address never reaches the final cutoff time.
1950
1951 This is a fairly common occurrence when a user is bumping up against
1952 their storage quota. Exim had some logic in its local delivery code
1953 to deal with this. However it did not apply to per-recipient defers
1954 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1955
1ddeb334
TF
1956 This change adds a proper retry rule check during routing so that the
1957 final cutoff time is checked against the message's age. We only do
1958 this check if there is an address retry record and there is not a
1959 domain retry record; this implies that previous attempts to handle
1960 the address had the retry_use_local_parts option turned on. We use
1961 this as an approximation for the destination being like a local
1962 delivery, as in LMTP.
67bd1ab3
TF
1963
1964 I suspect this new check makes the old local delivery cutoff check
1965 redundant, but I have not verified this so I left the code in place.
1966
326cdc37
TF
1967TF/02 Correct gecos expansion when From: is a prefix of the username.
1968
1969 Test 0254 submits a message to Exim with the header
1970
1971 Resent-From: f
1972
1973 When I ran the test suite under the user fanf2, Exim expanded
1974 the header to contain my full name, whereas it should have added
1975 a Resent-Sender: header. It erroneously treats any prefix of the
1976 username as equal to the username.
1977
1978 This change corrects that bug.
1979
f62514b3
GF
1980GF/01 DCC debug and logging tidyup
1981 Error conditions log to paniclog rather than rejectlog.
1982 Debug lines prefixed by "DCC: " to remove any ambiguity.
1983
eb505532
TF
1984TF/03 Avoid unnecessary rebuilds of lookup-related code.
1985
14c7b357
PP
1986PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1987 Bug spotted by Jeremy Harris; was flawed since initial commit.
1988 Would have resulted in OCSP responses post-SNI triggering an Exim
1989 NULL dereference and crash.
1990
94eaf700
PP
1991JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1992
6f5a440a
PP
1993PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1994 Bug detection, analysis and fix by Samuel Thibault.
1995 Bugzilla 1331, Debian bug #698092.
1996
514ee161
SC
1997SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1998
fd98a5c6
JH
1999JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
2000 Server implementation by Todd Lyons, client by JH.
2001 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
2002 config variable "prdr_enable" controls whether the server
2003 advertises the facility. If the client requests PRDR a new
2004 acl_data_smtp_prdr ACL is called once for each recipient, after
2005 the body content is received and before the acl_smtp_data ACL.
4c04137d 2006 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
2007 on the smtp transport, and the server advertisement.
2008 Default client logging of deliveries and rejections involving
2009 PRDR are flagged with the string "PRDR".
2010
035c7f1e
PP
2011PP/16 Fix problems caused by timeouts during quit ACLs trying to double
2012 fclose(). Diagnosis by Todd Lyons.
2013
ff284120
PP
2014PP/17 Update configure.default to handle IPv6 localhost better.
2015 Patch by Alain Williams (plus minor tweaks).
2016 Bugzilla 880.
2017
26e72755
PP
2018PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
2019 This is now consistent with GnuTLS, and is now documented: the
2020 previous undocumented portable approach to treating the option as
2021 unset was to force an expansion failure. That still works, and
2022 an empty string is now equivalent.
2023
0fbd9bff
PP
2024PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
2025 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
2026 not performing validation itself.
2027
700d22f3
PP
2028PP/20 Added force_command boolean option to pipe transport.
2029 Patch from Nick Koston, of cPanel Inc.
2030
fcc8e047
JH
2031JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
2032 Bugzilla 321, 823.
2033
4c04137d 2034TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 2035
8c020188
PP
2036PP/21 Fix eximon continuous updating with timestamped log-files.
2037 Broken in a format-string cleanup in 4.80, missed when I repaired the
2038 other false fix of the same issue.
2039 Report and fix from Heiko Schlichting.
2040 Bugzilla 1363.
2041
d13cdd30
PP
2042PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
2043 Report from Prashanth Katuri.
2044
e2fbf4a2
PP
2045PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
2046 It's SecureTransport, so affects any MacOS clients which use the
2047 system-integrated TLS libraries, including email clients.
2048
f4c1088b
PP
2049PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
2050 using a MIME ACL for non-SMTP local injection.
2051 Report and assistance in diagnosis by Warren Baker.
2052
c5c2182f
PP
2053TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
2054
73431ca9
JH
2055JH/16 Fix comparisons for 64b. Bugzilla 1385.
2056
2d07a215
TL
2057TL/09 Add expansion variable $authenticated_fail_id to keep track of
2058 last id that failed so it may be referenced in subsequent ACL's.
2059
a30a8861
TL
2060TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
2061 Alexander Miroch.
2062
33382dd9
TL
2063TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
2064 ldap library initialization, allowing self-signed CA's to be
2065 used. Also properly sets require_cert option later in code by
2066 using NULL (global ldap config) instead of ldap handle (per
2067 session). Bug diagnosis and testing by alxgomz.
6d7c6175 2068
046172e6
TL
2069TL/12 Enhanced documentation in the ratelimit.pl script provided in
2070 the src/util/ subdirectory.
2071
581d7bee 2072TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 2073 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
2074 EXPERIMENTAL_TPDA.
2075
2076TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
2077 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
2078 redis_servers = needs to be configured which will be used by the redis
2079 lookup. Patch from Warren Baker, of The Packet Hub.
2080
237b2cf2
TL
2081TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
2082
9fc5a352
TL
2083TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
2084 hostname or reverse DNS when processing a host list. Used suggestions
2085 from multiple comments on this bug.
1a7b746d 2086
b10e4ec2
TL
2087TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
2088
e2cebd74
TL
2089TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
2090 Missed a few lines, added it to make the runtest require no keyboard
2091 interaction.
2092
2093TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
2094 contains upper case chars. Make router use caseful_local_part.
2095
2519e60d
TL
2096TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
2097 support when GnuTLS has been built with p11-kit.
2098
e78e6ecf 2099
4263f395
PP
2100Exim version 4.80.1
2101-------------------
2102
2103PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
2104 CVE-2012-5671
2c422e6f 2105 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 2106
ea722490 2107
b1770b6e 2108Exim version 4.80
0599f9cf
PP
2109-----------------
2110
2111PP/01 Handle short writes when writing local log-files.
2112 In practice, only affects FreeBSD (8 onwards).
2113 Bugzilla 1053, with thanks to Dmitry Isaikin.
2114
23c7e742
NM
2115NM/01 Bugzilla 949 - Documentation tweak
2116
b322aac8
NM
2117NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
2118 improved.
2119
4a891427
NM
2120NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
2121
c1e794ba 2122PP/02 Implemented gsasl authenticator.
b322aac8 2123
97753960
PP
2124PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
2125
2126PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
2127 `pkg-config foo` for cflags/libs.
2128
df6303fa
PP
2129PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
2130 with rest of GSASL and with heimdal_gssapi.
2131
7e6a8985
PP
2132PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
2133 `pkg-config foo` for cflags/libs for the TLS implementation.
2134
f1e05cc7 2135PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
2136 properties get this fed in as external SSF. A number of robustness
2137 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 2138
4c287009
PP
2139PP/08 cyrus_sasl server now expands the server_realm option.
2140
b98bb9ac
PP
2141PP/09 Bugzilla 1214 - Log authentication information in reject log.
2142 Patch by Jeremy Harris.
2143
4a6a987a
PP
2144PP/10 Added dbmjz lookup type.
2145
c45dd180 2146PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 2147
7db8d074
PP
2148PP/12 MAIL args handles TAB as well as SP, for better interop with
2149 non-compliant senders.
2150 Analysis and variant patch by Todd Lyons.
2151
eae0036b 2152NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 2153 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
2154 Patch from Dirk Mueller <dmueller@suse.com>
2155
dec5017e
PP
2156PP/13 tls_peerdn now print-escaped for spool files.
2157 Observed some $tls_peerdn in wild which contained \n, which resulted
2158 in spool file corruption.
2159
c80c5570
PP
2160PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
2161 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
2162 or write after TLS renegotiation, which otherwise led to messages
2163 "Got SSL error 2".
2164
076b11e2
PP
2165TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
2166 as a tracking header (ie: a signed header comes before the signature).
2167 Patch from Wolfgang Breyha.
2168
5407bfff
JH
2169JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2170 comma-sep list; embedded commas doubled.
2171
9e45c72b
PP
2172JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2173
e74376d8
PP
2174PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2175 diagnostics.
2176 Report and patch from Dmitry Banschikov.
2177
4c04137d 2178PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
2179 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2180 failures. We appear to now support TLS1.1+ with Exim.
2181
7be682ca
PP
2182PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2183 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
2184 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2185 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 2186
ef840681
PP
2187PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2188 NULL dereference. Report and patch from Alun Jones.
2189
5bfb4cdf
PP
2190PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2191 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2192 Not seeing resolver debug output on NetBSD, but suspect this is a
2193 resolver implementation change.
2194
c6e95d22
PP
2195PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2196 Left warnings. Added "eximon gdb" invocation mode.
2197
9cbad13b
PP
2198PP/21 Defaulting "accept_8bitmime" to true, not false.
2199
9ee44efb
PP
2200PP/22 Added -bw for inetd wait mode support.
2201
6a6084f8
PP
2202PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2203 locate the relevant includes and libraries. Made this the default.
2204
12dd53c7
PP
2205PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2206 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2207
9e45c72b 2208JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
2209 This may cause build issues on older platforms.
2210
17c76198
PP
2211PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2212 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2213 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2214 Added SNI support via GnuTLS too.
af3498d6 2215 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 2216
53947857 2217PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 2218
eae0036b 2219PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
2220 Applied second patch from Janne, implementing suggestion to default
2221 multiple-strings-in-record handling to match SPF spec.
eae0036b 2222
9e45c72b 2223JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 2224
7390e768
PP
2225PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2226 read-only, out of scope).
2227 Patch from Wolfgang Breyha, report from Stuart Northfield.
2228
08488c86
PP
2229PP/29 Fix three issues highlighted by clang analyser static analysis.
2230 Only crash-plausible issue would require the Cambridge-specific
2231 iplookup router and a misconfiguration.
2232 Report from Marcin Mirosław.
2233
6475bd82
PP
2234PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2235
81f91683
PP
2236PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2237 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2238 As part of this, removing so much warning spew let me fix some minor
2239 real issues in debug logging.
2240
5779e6aa
PP
2241PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2242 assignment on my part. Fixed.
2243
3375e053
PP
2244PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2245 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2246 Janne Snabb (who went above and beyond: thank you).
2247
2248PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2249 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
2250 relatively easy to get wrong. Should also expose TLS library linkage
2251 problems.
3375e053 2252
9d26b8c0
PP
2253PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2254 64-bit ${eval} (JH/03).
2255
57eb9e91 2256PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
2257 GNU libc to support some of the 64-bit stuff, should not lead to
2258 conflicts. Defined before os.h is pulled in, so if a given platform
2259 needs to override this, it can.
2260
16880d1a
PP
2261PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2262 protection layer was required, which is not implemented.
2263 Bugzilla 1254, patch from Wolfgang Breyha.
2264
a799883d
PP
2265PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2266 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2267 tls_dhparam take prime identifiers. Also unbreak combination of
2268 OpenSSL+DH_params+TLSSNI.
2269
3ecab157 2270PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 2271
0599f9cf 2272
867fcbf5
PP
2273Exim version 4.77
2274-----------------
2275
2276PP/01 Solaris build fix for Oracle's LDAP libraries.
2277 Bugzilla 1109, patch from Stephen Usher.
2278
f1a29782
TF
2279TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2280
ab42bd23
TK
2281TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2282 whitespace trailer
867fcbf5 2283
0ca0cf52
TF
2284TF/02 Fix a couple more cases where we did not log the error message
2285 when unlink() failed. See also change 4.74-TF/03.
2286
921b12ca
TF
2287TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2288 lock up or crash if it happened to be inside a call to libc when it
2289 got a SIGUSR1 from exiwhat.
2290
2291 The SIGUSR1 handler appends the current process status to the process
2292 log which is later printed by exiwhat. It used to use the general
2293 purpose logging code to do this, but several functions it calls are
2294 not safe for signals.
2295
2296 The new output code in the SIGUSR1 handler is specific to the process
2297 log, and simple enough that it's easy to inspect for signal safety.
2298 Removing some special cases also simplifies the general logging code.
2299 Removing the spurious timestamps from the process log simplifies
2300 exiwhat.
2301
c99ce5c9
TF
2302TF/04 Improved ratelimit ACL condition.
2303
2304 The /noupdate option has been deprecated in favour of /readonly which
2305 has clearer semantics. The /leaky, /strict, and /readonly update modes
2306 are mutually exclusive. The update mode is no longer included in the
2307 database key; it just determines when the database is updated. (This
4c04137d 2308 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
2309
2310 Exim now checks that the per_* options are used with an update mode that
2311 makes sense for the current ACL. For example, when Exim is processing a
2312 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2313 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2314 must specify per_mail/readonly. If you omit the update mode it defaults to
2315 /leaky where that makes sense (as before) or /readonly where required.
2316
2317 The /noupdate option is now undocumented but still supported for
2318 backwards compatibility. It is equivalent to /readonly except that in
2319 ACLs where /readonly is required you may specify /leaky/noupdate or
2320 /strict/noupdate which are treated the same as /readonly.
2321
2322 A useful new feature is the /count= option. This is a generalization
2323 of the per_byte option, so that you can measure the throughput of other
2324 aggregate values. For example, the per_byte option is now equivalent
2325 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2326
2327 The per_rcpt option has been generalized using the /count= mechanism
2328 (though it's more complicated than the per_byte equivalence). When it is
2329 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2330 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2331 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2332 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2333 Note that using per_rcpt with a non-readonly update mode in more than
2334 one ACL will cause the recipients to be double-counted. (The per_mail
2335 and per_byte options don't have this problem.)
2336
2337 The handling of very low rates has changed slightly. If the computed rate
2338 is less than the event's count (usually one) then this event is the first
2339 after a long gap. In this case the rate is set to the same as this event's
2340 count, so that the first message of a spam run is counted properly.
2341
2342 The major new feature is a mechanism for counting the rate of unique
2343 events. The new per_addr option counts the number of different
2344 recipients that someone has sent messages to in the last time period. It
2345 behaves like per_rcpt if all the recipient addresses are different, but
2346 duplicate recipient addresses do not increase the measured rate. Like
2347 the /count= option this is a general mechanism, so the per_addr option
2348 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2349 example, measure the rate that a client uses different sender addresses
2350 with the options per_mail/unique=$sender_address. There are further
2351 details in the main documentation.
2352
3634fc25
TF
2353TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2354
792e8a19
TF
2355TF/06 Removed a few PCRE remnants.
2356
5901f0ab
TF
2357TF/07 Automatically extract Exim's version number from tags in the git
2358 repository when doing development or release builds.
2359
7f2a2a43
PP
2360PP/02 Raise smtp_cmd_buffer_size to 16kB.
2361 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 2362
061b7ebd
PP
2363PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2364 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2365 Bugzilla 97.
2366
e12f8c32
PP
2367PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2368
9e949f00 2369PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
2370 Bugzilla 1078. Patch from John Horne.
2371
2372PP/06 Stop make process more reliably on build failure.
2373 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 2374
555ae6af 2375PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
2376 Bugzilla 1089. Patch from Heiko Schlittermann.
2377
2378PP/08 Handle ${run} returning more data than OS pipe buffer size.
2379 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 2380
6f7fe114
PP
2381PP/09 Handle IPv6 addresses with SPF.
2382 Bugzilla 860. Patch from Wolfgang Breyha.
2383
c566dd90
PP
2384PP/10 GnuTLS: support TLS 1.2 & 1.1.
2385 Bugzilla 1156.
89f897c3
PP
2386 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2387 Bugzilla 1095.
c566dd90 2388
d6cc7c78 2389PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2390 New compile-time build option, EXPAND_LISTMATCH_RHS.
2391 New expansion conditions, "inlist", "inlisti".
2392
0d0e4455
PP
2393PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2394
3399bb60 2395PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2396
2397PP/14 fix log_write() format string regression from TF/03.
2398 Bugzilla 1152. Patch from Dmitry Isaikin.
2399
0ca0cf52 2400
10906672
PP
2401Exim version 4.76
2402-----------------
2403
2404PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2405
754a0503
PP
2406PP/02 Harmonised TLS library version reporting; only show if debugging.
2407 Layout now matches that introduced for other libraries in 4.74 PP/03.
2408
c0c7b2da
PP
2409PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2410
e97d1f08
PP
2411PP/04 New "dns_use_edns0" global option.
2412
084c1d8c
PP
2413PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2414 Bugzilla 1098.
2415
4e7ee012
PP
2416PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2417 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2418
c8d52a00
PP
2419TK/01 Updated PolarSSL code to 0.14.2.
2420 Bugzilla 1097. Patch from Andreas Metzler.
2421
54e7ce4a
PP
2422PP/07 Catch divide-by-zero in ${eval:...}.
2423 Fixes bugzilla 1102.
2424
5ee6f336
PP
2425PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2426 Bugzilla 1104.
2427
c8d52a00 2428TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2429 format-string attack -- SECURITY: remote arbitrary code execution.
2430
2431TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2432 time unintentionally subject to list matching rules, letting the header
2433 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2434 arbitrary string expansion). This allowed for information disclosure.
2435
2436PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2437 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2438
10906672 2439
aa097c4c
NM
2440Exim version 4.75
2441-----------------
2442
4c04137d 2443NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2444 Bugzilla 1073
2445
7f3d9eff
TF
2446TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2447 This fixes portability to compilers other than gcc, notably
2448 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2449
159f52d2
TF
2450TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2451 makefiles for portability to HP-UX and POSIX correctness.
2452
0cc9542a
PP
2453PP/01 Permit LOOKUP_foo enabling on the make command-line.
2454 Also via indented variable definition in the Makefile.
2455 (Debugging by Oliver Heesakkers).
2456
f7274286
PP
2457PP/02 Restore caching of spamd results with expanded spamd_address.
2458 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2459
7b797365
PP
2460PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2461 Improves build reliability. Fix from: Frank Elsner
2462
caacae52
NM
2463NM/02 Fix wide character breakage in the rfc2047 coding
2464 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2465
09dcaba9
NM
2466NM/03 Allow underscore in dnslist lookups
2467 Fixes bug 1026. Patch from Graeme Fowler
2468
bc19a55b
PP
2469PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2470 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2471
bd4c9759
NM
2472NM/04 Fixed exiqgrep to cope with mailq missing size issue
2473 Fixes bug 943.
2474
b72aab72
PP
2475PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2476 is logged, to avoid truncation. Patch from John Horne.
2477
2fe76745
PP
2478PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2479 Patch from Jakob Hirsch.
2480
76aa570c
PP
2481PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2482 SQL string expansion failure details.
2483 Patch from Andrey Oktyabrski.
2484
f1e5fef5
PP
2485PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2486 Patch from Simon Arlott.
2487
4d805ee9
PP
2488PP/09 New lookups functionality failed to compile on old gcc which rejects
2489 extern declarations in function scope.
2490 Patch from Oliver Fleischmann
2491
cd59ab18
PP
2492PP/10 Use sig_atomic_t for flags set from signal handlers.
2493 Check getgroups() return and improve debugging.
2494 Fixed developed for diagnosis in bug 927 (which turned out to be
2495 a kernel bug).
2496
332f5cf3
PP
2497PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2498 Patch from Mark Zealey.
2499
29cfeb94
PP
2500PP/12 Bugzilla 1056: Improved spamd server selection.
2501 Patch from Mark Zealey.
2502
660242ad
PP
2503PP/13 Bugzilla 1086: Deal with maildir quota file races.
2504 Based on patch from Heiko Schlittermann.
2505
bc4bc4c5
PP
2506PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2507 Patch from Uwe Doering, sign-off by Michael Haardt.
2508
2e64baa9
NM
2509NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2510 variable declaration deep within a block. Bug and patch from
2511 Dennis Davis.
2512
4c04137d 2513PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2514
6bac1a9a
PP
2515PP/16 Make DISABLE_DKIM build knob functional.
2516
552193f0
NM
2517NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2518 Patch by Simon Arlott
baeee2c1 2519
1b587e48
TF
2520TF/03 Fix valgrind.h portability to C89 compilers that do not support
2521 variable argument macros. Our copy now differs from upstream.
2522
aa097c4c 2523
8c07b69f
TF
2524Exim version 4.74
2525-----------------
2526
2527TF/01 Failure to get a lock on a hints database can have serious
2528 consequences so log it to the panic log.
2529
c0ea85ab
TF
2530TF/02 Log LMTP confirmation messages in the same way as SMTP,
2531 controlled using the smtp_confirmation log selector.
2532
0761d44e
TF
2533TF/03 Include the error message when we fail to unlink a spool file.
2534
0a349494
PP
2535DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2536 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2537 for maintaining out-of-tree patches for some time.
2538
2539PP/01 Bugzilla 139: Documentation and portability issues.
2540 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2541 Handle per-OS dynamic-module compilation flags.
2542
fea24b2e
PP
2543PP/02 Let /dev/null have normal permissions.
2544 The 4.73 fixes were a little too stringent and complained about the
2545 permissions on /dev/null. Exempt it from some checks.
2546 Reported by Andreas M. Kirchwitz.
2547
6545de78
PP
2548PP/03 Report version information for many libraries, including
2549 Exim version information for dynamically loaded libraries. Created
2550 version.h, now support a version extension string for distributors
2551 who patch heavily. Dynamic module ABI change.
2552
1670ef10
PP
2553PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2554 privilege escalation vulnerability whereby the Exim run-time user
2555 can cause root to append content of the attacker's choosing to
2556 arbitrary files.
2557
c0886197
PP
2558PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2559 (Wolfgang Breyha)
2560
b7487bce
PP
2561PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2562 If dropping privileges for untrusted macros, we disabled normal logging
2563 on the basis that it would fail; for the Exim run-time user, this is not
2564 the case, and it resulted in successful deliveries going unlogged.
2565 Fixed. Reported by Andreas Metzler.
2566
8c07b69f 2567
97fd1e48 2568Exim version 4.73
ed7f7860 2569-----------------
97fd1e48
PP
2570
2571PP/01 Date: & Message-Id: revert to normally being appended to a message,
2572 only prepend for the Resent-* case. Fixes regression introduced in
2573 Exim 4.70 by NM/22 for Bugzilla 607.
2574
6901c596
PP
2575PP/02 Include check_rfc2047_length in configure.default because we're seeing
2576 increasing numbers of administrators be bitten by this.
2577
a8c8d6b5
JJ
2578JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2579
77bb000f
PP
2580PP/03 Bugzilla 994: added openssl_options main configuration option.
2581
a29e5231
PP
2582PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2583
ec5a0394 2584PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2585
55c75993
PP
2586PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2587
453a6645 2588PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2589 without a peer certificate, leading to a segfault because of an
2590 assumption that peers always have certificates. Be a little more
453a6645
PP
2591 paranoid. Problem reported by Martin Tscholak.
2592
8544e77a
PP
2593PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2594 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2595 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2596 CL also introduces -bmalware, various -d+acl logging additions and
2597 more caution in buffer sizes.
8544e77a 2598
83e029d5
PP
2599PP/09 Implemented reverse_ip expansion operator.
2600
ed7f7860
PP
2601PP/10 Bugzilla 937: provide a "debug" ACL control.
2602
7d9f747b
PP
2603PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2604
4b2241d2
PP
2605PP/12 Bugzilla 973: Implement --version.
2606
10385c15
PP
2607PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2608
dbc4b90d
PP
2609PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2610
532be449
PP
2611PP/15 Bugzilla 816: support multiple condition rules on Routers.
2612
6a8de854 2613PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2614 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2615 ignore trailing whitespace.
6a8de854 2616
5dc43717
JJ
2617JJ/02 prevent non-panic DKIM error from being sent to paniclog
2618
2619JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2620 "exim" to be used
55c75993 2621
3346ab01
PP
2622PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2623 Notification from Dr Andrew Aitchison.
2624
491fab4c
PP
2625PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2626 ExtendedDetectionInfo response format.
2627 Notification from John Horne.
2628
13eb9497
PP
2629PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2630 compatible.
2631
2632PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2633 XSL and documented dependency on system catalogs, with examples of how
2634 it normally works.
2635
7f36d675
DW
2636DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2637 access.
2638
c1d94452
DW
2639DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2640 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2641 configuration file which is writeable by the Exim user or group.
2642
e2f5dc15
DW
2643DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2644 of configuration files to cover files specified with the -C option if
2645 they are going to be used with root privileges, not just the default
2646 configuration file.
2647
cd25e41d
DW
2648DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2649 option (effectively making it always true).
2650
261dc43e
DW
2651DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2652 files to be used while preserving root privileges.
2653
fa32850b
DW
2654DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2655 that rogue child processes cannot use them.
2656
79d4bc3d
PP
2657PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2658 run-time user, instead of root.
2659
43236f35 2660PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2661 Exim run-time user without dropping privileges.
2662
fb08281f
DW
2663DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2664 result string, instead of calling string_vformat() twice with the same
2665 arguments.
3346ab01 2666
74935b98
DW
2667DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2668 for other users. Others should always drop root privileges if they use
2669 -C on the command line, even for a whitelisted configure file.
2670
90b6341f
DW
2671DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2672
57730b52
ML
2673NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2674
66581d1e 2675
465e92cf
JJ
2676Exim version 4.72
2677-----------------
2678
453a6645
PP
2679JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2680 $data_path, and $header_path variables; fixed documentation bugs and
2681 typos
465e92cf 2682
453a6645
PP
2683JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2684 exipick to access non-standard spools, including the "frozen" queue
2685 (Finput)
edae0343 2686
9bd3e22c
NM
2687NM/01 Bugzilla 965: Support mysql stored procedures.
2688 Patch from Alain Williams
2689
bb576ff7
NM
2690NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2691
5a1a5845
NM
2692NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2693 Patch from Andreas Metzler
2694
981a9fad
NM
2695NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2696 Patch from Kirill Miazine
2697
7fc497ee
NM
2698NM/05 Bugzilla 671: Added umask to procmail example.
2699
1a41defa
JJ
2700JJ/03 installed exipick 20100323.0, fixing doc bug
2701
a466095c 2702NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2703 directory. Notification and patch from Dan Rosenberg.
a466095c 2704
94a6bd0b
NM
2705TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2706
2707TK/02 Improve log output when DKIM signing operation fails.
2708
2709MH/01 Treat the transport option dkim_domain as a colon separated
2710 list, not as a single string, and sign the message with each element,
2711 omitting multiple occurences of the same signer.
2712
c1b141a8
NM
2713NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2714 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2715
b26eacf1 2716NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2717 Patch by Simon Arlott
2718
179c5980 2719PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2720 MBX locking. Notification from Dan Rosenberg.
179c5980 2721
9bd3e22c 2722
7c6d71af
NM
2723Exim version 4.71
2724-----------------
2725
7d9f747b 2726TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2727
f013fb92
NM
2728NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2729
0eb8eedd
NM
2730NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2731
663ee6d9
NM
2732NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2733
177ebd9b
NM
2734NM/04 Bugzilla 915: Flag broken perl installation during build.
2735
7c6d71af 2736
210f147e
NM
2737Exim version 4.70
2738-----------------
2739
cdd3bb85 2740TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2741 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2742
2743TK/02 Write list of recipients to X-Envelope-Sender header when building
2744 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2745 Hirsch).
cdd3bb85
TK
2746
2747TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2748 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2749 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2750
2751TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2752 by Mark Daniel Reidel <mr@df.eu>.
2753
210f147e
NM
2754NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2755 When building exim an external PCRE library is now needed -
2756 PCRE is a system library on the majority of modern systems.
2757 See entry on PCRE_LIBS in EDITME file.
2758
deafd5b3
NM
2759NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2760 conversation. Added nologin parameter to request.
7d9f747b 2761 Patch contributed by Kirill Miazine.
deafd5b3 2762
089793a4
TF
2763TF/01 Do not log submission mode rewrites if they do not change the address.
2764
5f16ca82
TF
2765TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2766
dae9d94e 2767NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2768 log files in place. Contributed by Roberto Lima.
dae9d94e 2769
7d9f747b 2770NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2771
06864c44
TF
2772TF/03 Bugzilla 615: When checking the local_parts router precondition
2773 after a local_part_suffix or local_part_prefix option, Exim now
2774 does not use the address's named list lookup cache, since this
2775 contains cached lookups for the whole local part.
2776
65a7d8c3 2777NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2778 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2779
23510047 2780TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2781
7d9f747b 2782NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2783
7d8eec3a 2784NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2785 Patch provided by Jan Srzednicki.
6c588e74 2786
89dec7b6
TF
2787TF/05 Leading white space used to be stripped from $spam_report which
2788 wrecked the formatting. Now it is preserved.
5f28a6e8 2789
a99de90c
TF
2790TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2791 that they are available at delivery time.
2792
e2803e40
TF
2793TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2794
7199e1ee
TF
2795TF/08 TLS error reporting now respects the incoming_interface and
2796 incoming_port log selectors.
2797
e276e04b
TF
2798TF/09 Produce a more useful error message if an SMTP transport's hosts
2799 setting expands to an empty string.
2800
ce552449 2801NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2802 Patch provided by Phil Pennock.
ce552449 2803
e765a0f1 2804NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2805 Patch provided by Richard Godbee.
e765a0f1 2806
4f054c63 2807NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2808 acl_smtp_notquit, added index entry.
4f054c63 2809
7d9f747b
PP
2810NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2811 Patch provided by Eugene Bujak.
24c929a2 2812
7d9f747b
PP
2813NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2814 accept(). Patch provided by Maxim Dounin.
cf73943b 2815
b52bc06e 2816NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2817 Patch provided by Phil Pennock.
b52bc06e 2818
447de4b0
NM
2819NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2820
4c69d561 2821NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2822 Patch provided by Brad "anomie" Jorsch.
4c69d561 2823
d5c39246 2824NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2825 Patch provided by Dean Brooks.
9b989985 2826
0b23848a
TK
2827TK/05 Add native DKIM support (does not depend on external libraries).
2828
8f3414a1 2829NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2830 Patch provided by Graeme Fowler.
e2aacdfd 2831
fb6f955d
NM
2832NM/16 Bugzilla 851: Documentation example syntax fix.
2833
2834NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2835
7d9f747b
PP
2836NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2837 lsearch.
dbb0bf41 2838
7d9f747b
PP
2839NM/19 Bugzilla 745: TLS version reporting.
2840 Patch provided by Phil Pennock.
f3766eb5 2841
7d9f747b
PP
2842NM/20 Bugzilla 167: bool: condition support.
2843 Patch provided by Phil Pennock.
36f12725 2844
7d9f747b
PP
2845NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2846 clients. Patch provided by Phil Pennock.
e6060e2c 2847
7d9f747b
PP
2848NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2849 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2850
7d9f747b
PP
2851NM/23 Bugzilla 687: Fix misparses in eximstats.
2852 Patch provided by Heiko Schlittermann.
d5c13d66 2853
7d9f747b
PP
2854NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2855 Patch provided by Heiko Schlittermann.
b2335c0b 2856
7d9f747b 2857NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2858 plus update to original patch.
f4cd9433 2859
7d9f747b 2860NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2861
7d9f747b
PP
2862NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2863 Patch provided by David Brownlee.
8dc71ab3 2864
7d9f747b 2865NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2866
7d9f747b 2867NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2868
7d9f747b 2869NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2870
7d9f747b 2871NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2872
17792b53 2873NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2874 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2875
7d9f747b
PP
2876NM/33 Bugzilla 898: Transport filter timeout fix.
2877 Patch by Todd Rinaldo.
52383f8f 2878
91576cec 2879NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2880 Patch by Serge Demonchaux.
5ca6d115 2881
7d9f747b
PP
2882NM/35 Bugzilla 39: Base64 decode bug fixes.
2883 Patch by Jakob Hirsch.
baee9eee 2884
7d9f747b 2885NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2886
7d9f747b 2887NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2888
7d9f747b 2889NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2890
7d9f747b 2891NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2892
deafd5b3 2893
47db1125
NM
2894Exim version 4.69
2895-----------------
2896
4b3504d0
TK
2897TK/01 Add preliminary DKIM support. Currently requires a forked version of
2898 ALT-N's libdkim that I have put here:
2899 http://duncanthrax.net/exim-experimental/
2900
2901 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2902 were called 'true' and it seems that C99 defines that as a reserved
2903 keyword to be used with 'bool' variable types. That means you could
2904 not include C99-style headers which use bools without triggering
2905 build errors in sieve.c.
2906
81ea09ca
NM
2907NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2908 as mailq or other aliases. Changed the --help handling significantly
2909 to do whats expected. exim_usage() emits usage/help information.
2910
f13cddcb
SC
2911SC/01 Added the -bylocaldomain option to eximstats.
2912
7d9f747b 2913NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2914
7d9f747b 2915NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2916
7d9f747b 2917NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2918
2919
eb4c0de6
PH
2920Exim version 4.68
2921-----------------
2922
2923PH/01 Another patch from the Sieve maintainer.
2924
6a3bceb1
PH
2925PH/02 When an IPv6 address is converted to a string for single-key lookup
2926 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2927 dots are used instead of colons so that keys in lsearch files need not
2928 contain colons. This was done some time before quoting was made available
2929 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2930 (notated using the quote facility) so as to distinguish them from IPv4
2931 keys. This meant that lookups for IP addresses in host lists did not work
2932 for iplsearch lookups.
2933
2934 This has been fixed by arranging for IPv6 addresses to be expressed with
2935 colons if the lookup type is iplsearch. This is not incompatible, because
2936 previously such lookups could never work.
2937
4c04137d 2938 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2939 ordinary lsearch keys. However, making the change in all cases is
2940 incompatible and would probably break a number of configurations.
2941
2e30fa9d
TK
2942TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2943 version.
2944
0806a9c5
MH
2945MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2946 conversion specification without a maximum field width, thereby enabling
2947 a rogue spamd server to cause a buffer overflow. While nobody in their
2948 right mind would setup Exim to query an untrusted spamd server, an
2949 attacker that gains access to a server running spamd could potentially
2950 exploit this vulnerability to run arbitrary code as the Exim user.
2951
ae276964
TK
2952TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2953 $primary_hostname instead of what libspf2 thinks the hosts name is.
2954
0f2cbd1b
MH
2955MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2956 a directory entry by the name of the lookup key. Previously, if a
2957 symlink pointed to a non-existing file or a file in a directory that
2958 Exim lacked permissions to read, a lookup for a key matching that
2959 symlink would fail. Now it is enough that a matching directory entry
2960 exists, symlink or not. (Bugzilla 503.)
2961
2b85bce7
PH
2962PH/03 The body_linecount and body_zerocount variables are now exported in the
2963 local_scan API.
2964
93655c46
PH
2965PH/04 Added the $dnslist_matched variable.
2966
6c512171
PH
2967PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2968 This means they are set thereafter only if the connection becomes
2969 encrypted.
2970
2971PH/06 Added the client_condition to authenticators so that some can be skipped
2972 by clients under certain conditions.
2973
aa6dc513
PH
2974PH/07 The error message for a badly-placed control=no_multiline_responses left
2975 "_responses" off the end of the name.
2976
a96603a0
PH
2977PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2978
8f240103
PH
2979PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2980 (without spaces) instead of just copying the configuration text.
2981
2982PH/10 Added the /noupdate option to the ratelimit ACL condition.
2983
d677b2f2
PH
2984PH/11 Added $max_received_linelength.
2985
d52120f2
PH
2986PH/12 Added +ignore_defer and +include_defer to host lists.
2987
64f2600a
PH
2988PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2989 way in which PCRE > 7.0 is built.
2990
8669f003
PH
2991PH/14 Implemented queue_only_load_latch.
2992
a4dc33a8
PH
2993PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2994 MAIL command. The effect was to mangle the value on 64-bit systems.
2995
d6a60c0f
PH
2996PH/16 Another patch from the Sieve maintainer.
2997
8f128379
PH
2998PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2999
8932dffe
PH
3000PH/18 If a system quota error occurred while trying to create the file for
3001 a maildir delivery, the message "Mailbox is full" was not appended to the
3002 bounce if the delivery eventually timed out. Change 4.67/27 below applied
3003 only to a quota excession during the actual writing of the file.
d6a60c0f 3004
ddea74fa 3005PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
3006 characters?) which causes problems in log lines. The DN values are now
3007 passed through string_printing() before being added to log lines.
3008
ddea74fa 3009PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
3010 and InterBase are left for another time.)
3011
ddea74fa
PH
3012PH/21 Added message_body_newlines option.
3013
ce9f225c
PH
3014PH/22 Guard against possible overflow in moan_check_errorcopy().
3015
19897d52
PH
3016PH/23 POSIX allows open() to be a macro; guard against that.
3017
bc64a74d
PH
3018PH/24 If the recipient of an error message contained an @ in the local part
3019 (suitably quoted, of course), incorrect values were put in $domain and
3020 $local_part during the evaluation of errors_copy.
3021
eb4c0de6 3022
b4ed4da0
PH
3023Exim version 4.67
3024-----------------
3025
22ad45c9
MH
3026MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
3027 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
3028 Jan Srzednicki.
3029
b4ed4da0
PH
3030PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
3031 issue a MAIL command.
3032
431b7361
PH
3033PH/02 In an ACL statement such as
3034
3035 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
3036
3037 if a client was not listed at all, or was listed with a value other than
3038 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
3039 the condition was not true (as it should be), so access was not denied.
3040 The bug was that the ! inversion was incorrectly passed on to the second
3041 item. This has been fixed.
3042
3043PH/03 Added additional dnslists conditions == and =& which are different from
3044 = and & when the dns lookup returns more than one IP address.
3045
83da1223
PH
3046PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
3047 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
3048
54fc8428
PH
3049PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
3050 FSYNC, which compiles an option called disable_fsync that allows for
3051 bypassing fsync(). The documentation is heavily laced with warnings.
3052
34c5e8dd
SC
3053SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
3054
bbe15da8
PH
3055PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
3056 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
3057 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
3058 including adding "make clean"; (3) Added -fPIC when compiling the test
3059 dynamically loaded module, to get rid of a warning.
3060
0e8a9471
MH
3061MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
3062 message fails, move_frozen_messages = true and ignore_bounce_errors_after
3063 = 0s. The bug is otherwise harmless.
3064
f0872424
PH
3065PH/07 There was a bug in the dovecot authenticator such that the value of
3066 $auth1 could be overwritten, and so not correctly preserved, after a
3067 successful authentication. This usually meant that the value preserved by
3068 the server_setid option was incorrect.
3069
b01dd148
PH
3070PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
3071
6bf342e1
PH
3072PH/09 Installed PCRE release 7.0.
3073
273f34d0
PH
3074PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
3075 run for batched SMTP input. It is now run at the start of every message
3076 in the batch. While fixing this I discovered that the process information
3077 (output by running exiwhat) was not always getting set for -bs and -bS
3078 input. This is fixed, and it now also says "batched" for BSMTP.
3079
cf8b11a5
PH
3080PH/11 Added control=no_pipelining.
3081
41c7c167
PH
3082PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
3083 patch, slightly modified), and move the expansion of helo_data till after
3084 the connection is made in the smtp transport (so it can use these
3085 values).
3086
9c57cbc0
PH
3087PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
3088
f3f065bb
PH
3089PH/14 Added log_selector = +pid.
3090
047bdd8c
PH
3091PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
3092
0ce9abe6
PH
3093PH/16 Add ${if forany and ${if forall.
3094
0e22dfd1
PH
3095PH/17 Added dsn_from option to vary the From: line in DSNs.
3096
4c590bd1
PH
3097PH/18 Flush SMTP output before performing a callout, unless control =
3098 no_callout_flush is set.
3099
09945f1e
PH
3100PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
3101 was true (the default) a successful delivery failed to delete the retry
3102 item, thus causing premature timeout of the address. The bug is now
3103 fixed.
3104
c51b8e75
PH
3105PH/20 Added hosts_avoid_pipelining to the smtp transport.
3106
e28326d8 3107PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 3108 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
3109 other ACL rejections are.
3110
75b1493f
PH
3111PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
3112 with slight modification.
3113
7c5214ec
PH
3114PH/23 Applied sieve patches from the maintainer "tracking the latest notify
3115 draft, changing the syntax and factoring some duplicate code".
3116
4311097e
PH
3117PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
3118 for deliveries of the second and subsequent messages over the same SMTP
3119 connection.
3120
29f89cad
PH
3121PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
3122 ${reduce, with only minor "tidies".
3123
5e687460
SC
3124SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
3125
c3611384
PH
3126PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
3127 expansion side effects.
3128
5a11a7b4
PH
3129PH/27 When a message times out after an over-quota error from an Exim-imposed
3130 quota, the bounce message says "mailbox is full". This message was not
3131 being given when it was a system quota that was exceeded. It now should
3132 be the same.
3133
0e20aff9
MH
3134MH/03 Made $recipients available in local_scan(). local_scan() already has
3135 better access to the recipient list through recipients_list[], but
3136 $recipients can be useful in postmaster-provided expansion strings.
3137
ca86f471
PH
3138PH/28 The $smtp_command and $smtp_command_argument variables were not correct
3139 in the case of a MAIL command with additional options following the
3140 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
3141 were accidentally chopped off.
3142
a14e5636
PH
3143PH/29 SMTP synchronization checks are implemented when a command is read -
3144 there is a check that no more input is waiting when there shouldn't be
3145 any. However, for some commands, a delay in an ACL can mean that it is
3146 some time before the response is written. In this time, more input might
3147 arrive, invalidly. So now there are extra checks after an ACL has run for
3148 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
3149 pipelining has not been advertised.
3150
ec95d1a6
PH
3151PH/30 MH's patch to allow iscntrl() characters to be list separators.
3152
42855d71
PH
3153PH/31 Unlike :fail:, a custom message specified with :defer: was not being
3154 returned in the SMTP response when smtp_return_error_details was false.
3155 This has been fixed.
3156
57c2c631
PH
3157PH/32 Change the Dovecot authenticator to use read() and write() on the socket
3158 instead of the C I/O that was originally supplied, because problems were
3159 reported on Solaris.
3160
58c01c94
PH
3161PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
3162 Exim which did not show up earlier: it was assuming that a call to
3163 SSL_CTX_set_info_callback() might give an error value. In fact, there is
3164 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
3165 was a macro that became an assignment, so it seemed to work. This has
3166 changed to a proper function call with a void return, hence the compile
3167 error. Exim's code has been fixed.
3168
dee5a20a
PH
3169PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3170 cpus.
3171
d2ee6114
PH
3172PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3173
b2d5182b
PH
3174PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3175
79749a79
PH
3176PH/37 If a message is not accepted after it has had an id assigned (e.g.
3177 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
3178 "Completed" line in the log. When some messages of this type were
3179 selected by exigrep, they were listed as "not completed". Others were
3180 picked up by some special patterns. I have improved the selection
3181 criteria to be more general.
79749a79 3182
c456d9bb
PH
3183PH/38 The host_find_failed option in the manualroute router can now be set
3184 to "ignore", to completely ignore a host whose IP address cannot be
3185 found. If all hosts are ignored, the behaviour is controlled by the new
3186 host_all_ignored option.
3187
cd9868ec
PH
3188PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3189 homing or because of multiple MX records with /mx) generated more than
3190 one IP address, and the following item turned out to be the local host,
3191 all the secondary addresses of the first item were incorrectly removed
3192 from the list, along with the local host and any following hosts (which
3193 is what is supposed to happen).
3194
ebeaf996
PH
3195PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3196 whoever called Exim into the -H file. In the case of the daemon it was
3197 behaving confusingly. When first started, it used values for whoever
3198 started the daemon, but after a SIGHUP it used the Exim user (because it
3199 calls itself on a restart). I have changed the code so that it now always
3200 uses the Exim user.
3201
2679d413
PH
3202PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3203 message are rejected with the same error (e.g. no authentication or bad
3204 sender address), and a DATA command is nevertheless sent (as can happen
3205 with PIPELINING or a stupid MUA), the error message that was given to the
3206 RCPT commands is included in the rejection of the DATA command. This is
3207 intended to be helpful for MUAs that show only the final error to their
3208 users.
3209
84024b72
PH
3210PH/42 Another patch from the Sieve maintainer.
3211
8005d38e
SC
3212SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3213 Eximstats - Fixed some broken HTML links and added missing column headers
3214 (Jez Hancock).
3215 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3216 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3217
3298c6c6
SC
3218SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3219
a43a27c5
PH
3220PH/43 Yet another patch from the Sieve maintainer.
3221
58eb016e 3222PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
3223 the response to the final '.' that terminates a message, but only in the
3224 case where the client has not sent further data following the '.'
3225 (unfortunately, this is allowed). However, in many cases there won't be
3226 any further data because there won't be any more messages to send. A call
3227 to select() can be used: if it shows t