DKIM: fix $dkim_key_length in verify
[exim.git] / doc / doc-txt / ChangeLog
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1This document describes *changes* to previous versions, that might
2affect Exim's operation, with an unchanged configuration file. For new
3options, and new features, see the NewStuff file next to this ChangeLog.
495ae4b0 4
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6Exim version 4.94
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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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175JH/38 Fix $dkim_key_length. This should, after a DKIM verification, present
176 the size of the signing public-key. Previously it was instead giving
177 the size of the signature hash.
178
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180Exim version 4.93
181-----------------
182
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183JH/01 OpenSSL: With debug enabled output keying information sufficient, server
184 side, to decode a TLS 1.3 packet capture.
40ed89b3 185
fc243e94 186JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
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187 Previously the default library behaviour applied, sending two, each in
188 its own TCP segment.
189
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190JH/03 Debug output for ACL now gives the config file name and line number for
191 each verb.
192
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193JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
194
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195JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
196
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197JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
198 buffer overrun for (non-chunking) other transports.
199
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200JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
201 TLS1.3, means that a server rejecting a client certificate is not visible
202 to the client until the first read of encrypted data (typically the
203 response to EHLO). Add detection for that case and treat it as a failed
204 TLS connection attempt, so that the normal retry-in-clear can work (if
205 suitably configured).
206
c05bdbd6 207JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
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208 and/or domain. Found and fixed by Jason Betts.
209
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210JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
211 configuration). If a CNAME target was not a wellformed name pattern, a
212 crash could result.
213
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214JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
215 the OS reports them interleaved with other addresses.
216
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217JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
218 used both for input and for a verify callout, both encrypted, SMTP
219 responses being sent by the server could be lost. This resulted in
220 dropped connections and sometimes bounces generated by a peer sending
221 to this system.
254f38d1 222
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223JH/11 Harden plaintext authenticator against a badly misconfigured client-send
224 string. Previously it was possible to cause undefined behaviour in a
225 library routine (usually a crash). Found by "zerons".
226
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227JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
228 output.
229
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230JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
231 API was removed, so update to use the newer ones.
232
3c55eef2 233JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
00c0dd4e 234 any timeout set, is taking a long time. Previously we would hang on to a
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235 rotated logfile "forever" if the input was arriving with long gaps
236 (a previous attempt to fix addressed lack, for a long time, of initial
237 input).
238
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239HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
240 shared (NFS) environment. The length of the tempfile name is now
241 4 + 16 ("hdr.$message_exim_id") which might break on file
242 systems which restrict the file name length to lower values.
243 (It was "hdr.$pid".)
244
7d8d08c4 245HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
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246 shared (NFS) environment.
247
7d8d08c4 248HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
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249 did for all versions <4.90). Notably -M, -m, --invert, -I may be
250 affected.
251
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252JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
253 on some platforms for bit 31.
254
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255JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
256 to changes apparently associated with TLS1.3 handling some of the APIs
257 previously used were either nonfunctional or inappropriate. Strings
258 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
259 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
260 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
261 This affects log line X= elements, the $tls_{in,out}_cipher variables,
262 and the use of specific cipher names in the encrypted= ACL condition.
263
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264JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
265
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266JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
267 verification result was not updated unless hosts_require_ocsp applied.
268
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269JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
270 queue_list_requires_admin set to false, non-admin users were denied the
271 facility.
272
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273JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
274 directory-of-certs mode. Previously they were advertised despite the
275 documentation.
276
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277JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
278 A single TCP connection by a client will now hold a TLS connection open
279 for multiple message deliveries, by default. Previoud the default was to
280 not do so.
281
59c0959a 282JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
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283 default. If built with the facility, DANE will be used. The facility
284 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
285
286JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
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287 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
288 must be defined and you must still, unless you define DISABLE_TLS, manage
289 the the include-dir and library-file requirements that go with that
290 choice. Non-TLS builds are still supported.
59c0959a 291
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292JH/24 Fix duplicated logging of peer name/address, on a transport connection-
293 reject under TFO.
96eb7d2a 294
efad2f41 295JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
4e48d56c 296 default. If the platform supports and has the facility enabled, it will
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297 be requested on all coneections.
298
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299JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
300 controlled by the build-time option SUPPORT_PIPE_CONNECT.
301
6ee11061 302PP/01 Unbreak heimdal_gssapi, broken in 4.92.
0a5441fc 303
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304JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
305 success-DSN messages. Previously the From: header was always the default
306 one for these; the option was ignored.
6ee11061 307
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308JH/28 Fix the timeout on smtp response to apply to the whole response.
309 Previously it was reset for every read, so a teergrubing peer sending
310 single bytes within the time limit could extend the connection for a
311 long time. Credit to Qualsys Security Advisory Team for the discovery.
312
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313JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
314 delivery address, which leaked information of the results of local
315 forwarding. Change to the original envelope recipient address, per
316 standards.
317
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318JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
319 requested. Previously not bounce was generated and a log entry of
320 error ignored was made.
321
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322JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
323
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324JH/32 Introduce a general tainting mechanism for values read from the input
325 channel, and values derived from them. Refuse to expand any tainted
326 values, to catch one form of exploit.
327
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328JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
329 was unused and the unexpanded text used for the test. Found and
330 fixed by Ruben Jenster.
331
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332JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
333 an attempt to use a TLS library read routine dereffed a nul pointer,
334 causing a segfault.
335
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336JH/35 Bug 2409: filter out-of-spec chars from callout response before using
337 them in our smtp response.
338
9c6881f8 339JH/36 Have the general router option retry_use_local_part default to true when
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340 any of the restrictive preconditions are set (to anything). Previously it
341 was only for check_local user. The change removes one item of manual
342 configuration which is required for proper retries when a remote router
343 handles a subset of addresses for a domain.
344
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345JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
346 link count into consideration.
347
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348HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
349 caused the extension of big_buffer, the following lines were ignored.
350
351JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
352 accordance with RFC 2308. Previously there was no expiry, so a longlived
353 receive process (eg. due to ACL delays) versus a short SOA value could
354 surprise.
355
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356HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
357
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358JH/39 Promote DMARC support to mainline.
359
d6c829b9
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360JH/40 Bug 2452: Add a References: header to DSNs.
361
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362JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
363 parameters. The relevant library call is documented as "Deprecated: This
364 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
365 3.6.0, DH parameters are negotiated following RFC7919."
366
ab0e957b 367HS/06 Change the default of dnssec_request_domains to "*"
40ed89b3 368
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369JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
370 carried on and emitted a BDAT command, even when PIPELINING was not
371 active.
372
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373JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
374 buffer was used for the filename, resulting in a trap when tainted
375 arguments (eg. $domain) were used.
376
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377JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
378 recommended to avoid a possible server-load attack. The feature can be
379 re-enabled via the openssl_options main cofiguration option.
380
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381JH/45 local_scan API: documented the current smtp_printf() call. This changed
382 for version 4.90 - adding a "more data" boolean to the arguments.
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383 Bumped the ABI version number also, this having been missed previously;
384 release versions 4.90 to 4.92.3 inclusive were effectively broken in
385 respect of usage of smtp_printf() by either local_scan code or libraries
386 accessed via the ${dlfunc } expansion item. Both will need coding
387 adjustment for any calls to smtp_printf() to match the new function
388 signature; a FALSE value for the new argument is always safe.
b2d54f83 389
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390JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
391 the file-offset (which the Linux syscall does, and exim expects); this
392 resulted in an indefinite loop.
393
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394JH/47 ARC: fix crash in signing, triggered when a configuration error failed
395 to do ARC verification. The Authentication-Results: header line added
396 by the configuration then had no ARC item.
397
c5040dfd 398
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399Exim version 4.92
400-----------------
401
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402JH/01 Remove code calling the customisable local_scan function, unless a new
403 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
404
405JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
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406 non-signal-safe functions being used.
407
408JH/03 Bug 2269: When presented with a received message having a stupidly large
409 number of DKIM-Signature headers, disable DKIM verification to avoid
410 a resource-consumption attack. The limit is set at twenty.
9723f966 411
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412JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
413 report of oldest_pass in ${authres } in consequence, and separate out
414 some descriptions of reasons for verification fail.
415
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416JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
417 files in the spool were present and unlocked. A queue-runner could spot
418 them, resulting in a duplicate delivery. Fix that by doing the unlock
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419 after the unlink. Investigation by Tim Stewart. Take the opportunity to
420 add more error-checking on spoolfile handling while that code is being
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421 messed with.
422
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423PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
424 No known attacks, no CVE, this is defensive hardening.
425
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426JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
427 a queue-runner could start a delivery while other operations were ongoing.
428 Cutthrough delivery was a common victim, resulting in duplicate delivery.
429 Found and investigated by Tim Stewart. Fix by using the open message data
430 file handle rather than opening another, and not locally closing it (which
431 releases a lock) for that case, while creating the temporary .eml format
432 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
433
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434JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
435 $sender_verify_failure/$recipient_verify_failure to "random".
436
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437JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
438 legitimate.
439
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440JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
441 Previously this would segfault.
442
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443JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
444 segfault.
445
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446JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
447 like zero, since the resolver should be doing this for us, But we need one
448 as a CNAME but no MX presence gets the CNAME returned; we need to check
449 that doesn't point to an MX to declare it "no MX returned" rather than
450 "error, loop". A new main option is added so the older capability of
451 following some limited number of chain links is maintained.
452
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453JH/12 Add client-ip info to non-pass iprev ${authres } lines.
454
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455JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
456 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
457 now-deprecated earlier definitions used only specified the range up to TLS
458 1.2 (in the older-version library docs).
459
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460JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
461
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462JH/15 Rework TLS client-side context management. Stop using a global, and
463 explicitly pass a context around. This enables future use of TLS for
464 connections to service-daemons (eg. malware scanning) while a client smtp
465 connection is using TLS; with cutthrough connections this is quite likely.
466
5054c4fd 467JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
JH
468
469JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 470
946515bf
JH
471JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
472 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
473 Previously the "utf8" would be re-prepended for every additional message.
474
8c34c611
JH
475JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
476 Previously thery were accepted, resulting in issues when attempting to
477 forward messages to a non-supporting MTA.
478
1bca4f5f
PP
479PP/02 Let -n work with printing macros too, not just options.
480
8a6b4e02
JH
481JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
482 one parent address was copied, and bogus data was used at delivery-logging
483 time. Either a crash (after delivery) or bogus log data could result.
484 Discovery and analysis by Tim Stewart.
485
0a682b6c
PP
486PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
487 Previously if the string ended mid-character, we did not insert the
488 promised '?' replacement.
489
c2c451ac
PP
490PP/04 Documentation: current string operators work on bytes, not codepoints.
491
8768d548
JH
492JH/21 Change as many as possible of the global flags into one-bit bitfields; these
493 should pack well giving a smaller memory footprint so better caching and
494 therefore performance. Group the declarations where this can't be done so
495 that the byte-sized flag variables are not interspersed among pointer
496 variables, giving a better chance of good packing by the compiler.
497
5455f548
JH
498JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
499 non-null, to avoid issues with sites running BATV. Previously reports were
500 sent with an empty envelope sender so looked like bounces.
501
25beaee4
MK
502JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
503 The ignore_error flag wasn't being returned from the filter subprocess so
504 was not set for later routers. Investigation and fix by Matthias Kurz.
505
7ea1237c 506JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 507 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
MK
508 -Mrm. Developement by Matthias Kurz, hacked on by JH.
509
ebda598a
JH
510JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
511 a "Gnu special" function, asprintf() in the DB utility binary builds; I
512 hope that is portable enough.
513
570cb1bd
JH
514JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
515 requiring a known-CA anchor certificate; make it now rely entirely on the
516 TLSA as an anchor. Checking the name on the leaf cert against the name
517 on the A-record for the host is still done for TA (but not for EE mode).
518
eb58ddf5
JH
519JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
520 included in delivery lines for non-proxied connections, when compiled with
521 SUPPORT_SOCKS and running with proxy logging enabled.
522
ffbc20ed
MK
523JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
524 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
525 move the existing event to fire before the normal logging of message
526 failure so that custom logging is bracketed by normal logging.
527
4e928780
MK
528JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
529 msg:fail:internal event. Developement by Matthias Kurz.
530
75c121f0 531JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 532 far too small for todays use of crypto signatures stored there. Go all
75c121f0
JH
533 the way to the max DNS message size of 64kB, even though this might be
534 overmuch for IOT constrained device use.
535
e30f4f43
JH
536JH/31 Fix a bad use of a copy function, which could be used to pointlessly
537 copy a string over itself. The library routine is documented as not
538 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
539
a45431fa
JH
540JH/32 For main options check_spool_space and check_inode_space, where the
541 platform supports 64b integers, support more than the previous 2^31 kB
542 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
543 the previous G, M, k.
544
c0fb53b7
JH
545JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
546 $authenticated_fail_id variable on authentication failure. Previously
547 it was unset.
548
6aac3239
JH
549JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
550 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
551 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
552 GNUTLS_SEC_PARAM_MEDIUM.
553
5a2a0989
JH
554JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
555 side. Previously we would continue as if no SNI had been received.
556
de6f74f2 557JH/36 Harden the handling of string-lists. When a list consisted of a sole
b72f857f
JH
558 "<" character, which should be a list-separator specification, we walked
559 off past the nul-terimation.
560
de6f74f2
JH
561JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
562 causes) even when the retry time is not yet met. Previously they were
563 not, meaning that when (say) an account was over-quota and temp-rejecting,
564 and multiple senders' messages were queued, only one sender would get
565 notified on each configured delay_warning cycle.
566
aa6e77af 567JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 568
25fa0868
JH
569JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
570 cipher-suites, an error can be left on the stack even for a succeeding
571 accept; this results in impossible error messages when a later operation
572 actually does fail.
573
cb6bd80f
JH
574AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
575 return error codes indicating retry. Under TLS1.3 this becomes required.
576
577JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
578 it only wrote the new authenticators, resulting in a lack of tracking of
579 peer changes of ESMTP extensions until the next cache flush.
518b70e9 580
56ac062a
JH
581JH/41 Fix the loop reading a message header line to check for integer overflow,
582 and more-often against header_maxsize. Previously a crafted message could
583 induce a crash of the recive process; now the message is cleanly rejected.
584
ae63862b
MA
585JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
586 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
587
9723f966 588
bb264f6b
JH
589Exim version 4.91
590-----------------
459fca58 591
c39c8870 592GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
JH
593 When redis_servers is set to a list of > 1 element, and the Redis servers
594 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
595 case of MOVED into a DEFER case instead, thus moving the query onto the
596 next server in the list. For a cluster of N elements, all N servers must
597 be defined in redis_servers.
c39c8870 598
0800ef83
GF
599GF/02 Catch and remove uninitialized value warning in exiqsumm
600 Check for existence of @ARGV before looking at $ARGV[0]
601
459fca58
JH
602JH/01 Replace the store_release() internal interface with store_newblock(),
603 which internalises the check required to safely use the old one, plus
604 the allocate and data copy operations duplicated in both (!) of the
605 extant use locations.
606
944e8b37
JH
607JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
608 modifier. This matches the restriction on the commandline.
609
bbfb5dcd
JH
610JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
611 Previously only the last row was returned.
612
a05d3e34
JH
613JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
614 we assumed that tags in the header were well-formed, and parsed the
615 element content after inspecting only the first char of the tag.
616 Assumptions at that stage could crash the receive process on malformed
617 input.
618
ce93c6d8
JH
619JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
620 While running the DKIM ACL we operate on the Permanent memory pool so that
621 variables created with "set" persist to the DATA ACL. Also (at any time)
622 DNS lookups that fail create cache records using the Permanent pool. But
623 expansions release any allocations made on the current pool - so a dnsdb
624 lookup expansion done in the DKIM ACL releases the memory used for the
625 DNS negative-cache, and bad things result. Solution is to switch to the
626 Main pool for expansions.
627 While we're in that code, add checks on the DNS cache during store_reset,
628 active in the testsuite.
629 Problem spotted, and debugging aided, by Wolfgang Breyha.
630
2577f55f
JH
631JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
632 When none of the hosts presented to a transport match an already-open
633 connection, close it and proceed with the list. Previously we would
634 queue the message. Spotted by Lena with Yahoo, probably involving
635 round-robin DNS.
636
5b6f7658
JH
637JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
638 Previously a spurious "250 OK id=" response was appended to the proper
639 failure response.
640
c11d665d
JH
641JH/08 The "support for" informational output now, which built with Content
642 Scanning support, has a line for the malware scanner interfaces compiled
643 in. Interface can be individually included or not at build time.
e5ba8aa7
JH
644
645JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
646 by the template makefile "src/EDITME". The "STREAM" support for an older
647 ClamAV interface method is removed.
c11d665d 648
ba0e37b1
JH
649JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
650 rows affected is given instead).
651
96508de1
JH
652JH/11 The runtime Berkeley DB library version is now additionally output by
653 "exim -d -bV". Previously only the compile-time version was shown.
654
06fdb9f7
JH
655JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
656 SMTP connection. Previously, when one had more receipients than the
657 first, an abortive onward connection was made. Move to full support for
658 multiple onward connections in sequence, handling cutthrough connection
659 for all multi-message initiating connections.
660
f83a760f
JH
661JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
662 routers. Previously, a multi-recipient message would fail to match the
663 onward-connection opened for the first recipient, and cause its closure.
664
f1fed05b
JH
665JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
666 a timeout on read on a GnuTLS initiating connection, resulting in the
667 initiating connection being dropped. This mattered most when the callout
668 was marked defer_ok. Fix to keep the two timeout-detection methods
669 separate.
670
051d5efa
JH
671JH/15 Relax results from ACL control request to enable cutthrough, in
672 unsupported situations, from error to silently (except under debug)
673 ignoring. This covers use with PRDR, frozen messages, queue-only and
674 fake-reject.
675
cf3cd306
HSHR
676HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
677
744976d4
JH
678JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
679 metadata, resulting in a crash in free().
680
aab9a843 681PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 682 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 683 Broken also in d185889f4, with init system revamp.
7be14582 684
83d2a861
JH
685JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
686 Previously we abruptly closed the connection after reading a malware-
687 found indication; now we go on to read the "scan ok" response line,
688 and send a quit.
689
6741531c
JH
690JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
691 ACL. Previously, a crash would result.
692
85e03244
JH
693JH/19 Speed up macro lookups during configuration file read, by skipping non-
694 macro text after a replacement (previously it was only once per line) and
695 by skipping builtin macros when searching for an uppercase lead character.
696
c0635b6d
JH
697JH/20 DANE support moved from Experimental to mainline. The Makefile control
698 for the build is renamed.
699
b808677c
JH
700JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
701 was allocated for every new TLS startup, meaning one per message. Fix
702 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
703
6678c382
JH
704JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
705 reported the original. Fix to report (as far as possible) the ACL
706 result replacing the original.
707
dec766a1
WB
708JH/23 Fix memory leak during multi-message connections using STARTTLS under
709 OpenSSL. Certificate information is loaded for every new TLS startup,
710 and the resources needed to be freed.
711
15ae19f9
JH
712JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
713
e6532c4a
JH
714JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
715 was not propagated.
716
2556b3c6
SA
717JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
718 DATA response info to the (existing) per-recipient response info for
719 the "C=" log element. It can have useful tracking info from the
720 destination system. Patch from Simon Arlott.
721
fc8cd529
JH
722JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
723 length value. Previously this would segfault.
724
71bb51e0
HSHR
725HS/02 Support Avast multiline protoocol, this allows passing flags to
726 newer versions of the scanner.
727
e04bfa34
JH
728JH/28 Ensure that variables possibly set during message acceptance are marked
729 dead before release of memory in the daemon loop. This stops complaints
730 about them when the debug_store option is enabled. Discovered specifically
731 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
732 Do the same for the queue-runner and queue-list loops, for variables set
733 from spool message files. Do the same for the SMTP per-message loop, for
734 certain variables indirectly set in ACL operations.
e04bfa34 735
ecce6d9a
JH
736JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
737 as a multi-recipient message from a mailinglist manager). The coding had
738 an arbitrary cutoff number of characters while checking for more input;
739 enforced by writing a NUL into the buffer. This corrupted long / fast
740 input. The problem was exposed more widely when more pipelineing of SMTP
741 responses was introduced, and one Exim system was feeding another.
742 The symptom is log complaints of SMTP syntax error (NUL chars) on the
743 receiving system, and refused recipients seen by the sending system
744 (propating to people being dropped from mailing lists).
745 Discovered and pinpointed by David Carter.
746
c9cf9ac4
JH
747JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
748 replaced by the ${authresults } expansion.
749
b3b37076
JH
750JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
751
830832c9
HSHR
752HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
753 allows proper process termination in container environments.
754
f64e8b5f
JH
755JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
756 Previously the "final dot" had a newline after it; ensure it is CR,LF.
757
8f0776b5
JH
758JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
759 and "err_perm", deprecated since 4.83 when the RFC-defined words
760 "temperror" and "permerror" were introduced.
761
857eaf37
JH
762JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
763 transport-filters or DKIM-signing. The restriction was lost in the
764 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 765 Extend the restriction to also cover ARC-signing.
857eaf37 766
c85476e9
JH
767JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
768 in defer=pass mode supply a 450 to the initiator. Previously the message
769 would be spooled.
770
405074ad
PP
771PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
772 tls_require_ciphers is used as before.
773
eb445b04
HSHR
774HS/03 Malware Avast: Better match the Avast multiline protocol. Add
775 "pass_unscanned". Only tmpfails from the scanner are written to
776 the paniclog, as they may require admin intervention (permission
777 denied, license issues). Other scanner errors (like decompression
778 bombs) do not cause a paniclog entry.
ad93c40f 779
d342446f
JH
780JH/36 Fix reinitialisation of DKIM logging variable between messages.
781 Previously it was possible to log spurious information in receive log
782 lines.
783
a28050f8
JH
784JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
785 triggered odd behaviour from Outlook Express clients.
786
ddd16464
PP
787PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
788 suffix list.
789
321ef002
JH
790JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
791 since the IETF WG has not yet settled on that versus the original
792 "bare" representation.
793
3203e7ba
JH
794JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
795 Previously the millisecond value corrupted the output.
796 Fix also for syslog_pid=no and log_selector +pid, for which the pid
797 corrupted the output.
798
bbfb5dcd 799
acfc18c3
PP
800Exim version 4.90
801-----------------
802
803JH/01 Rework error string handling in TLS interface so that the caller in
804 more cases is responsible for logging. This permits library-sourced
805 string to be attached to addresses during delivery, and collapses
806 pairs of long lines into single ones.
807
856d1e16
PP
808PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
809 during configuration. Wildcards are allowed and expanded.
810
b9df1829
JH
811JH/02 Rework error string handling in DKIM to pass more info back to callers.
812 This permits better logging.
813
875512a3
JH
814JH/03 Rework the transport continued-connection mechanism: when TLS is active,
815 do not close it down and have the child transport start it up again on
816 the passed-on TCP connection. Instead, proxy the child (and any
817 subsequent ones) for TLS via a unix-domain socket channel. Logging is
818 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 819 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 820
fc3f96af
JH
821JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
822 identical IP addresses on different listening ports. Will also affect
823 "exiwhat" output.
824
98913c8e
BK
825PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
826 add noisy ifdef guards to special-case this sillyness.
827 Patch from Bernd Kuhls.
828
8d909960
JH
829JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
830 than 255 are no longer allowed.
831
7006ee24
JH
832JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
833 Disable the session-cache too, which might reduce our load. Since we
834 currrectly use a new context for every connection, both as server and
835 client, there is no benefit for these.
836 GnuTLS appears to not support tickets server-side by default (we don't
837 call gnutls_session_ticket_enable_server()) but client side is enabled
838 by default on recent versions (3.1.3 +) unless the PFS priority string
839 is used (3.2.4 +).
840
6e411084
PP
841PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
842 <https://reproducible-builds.org/specs/source-date-epoch/>.
843
4c2471ca
JH
844JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
845 the check for any unsuccessful recipients did not notice the limit, and
846 erroneously found still-pending ones.
847
4e910c01
JH
848JH/08 Pipeline CHUNKING command and data together, on kernels that support
849 MSG_MORE. Only in-clear (not on TLS connections).
850
42055a33
JH
851JH/09 Avoid using a temporary file during transport using dkim. Unless a
852 transport-filter is involved we can buffer the headers in memory for
853 creating the signature, and read the spool data file once for the
854 signature and again for transmission.
855
eeb35890
JH
856JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
857 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 858 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 859
b7d3afcf
JH
860JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
861 case where the routing stage had gathered several addresses to send to
862 a host before calling the transport for the first, we previously failed
863 to close down TLS in the old transport process before passing the TCP
864 connection to the new process. The new one sent a STARTTLS command
865 which naturally failed, giving a failed delivery and bloating the retry
866 database. Investigation and fix prototype from Wolfgang Breyha.
867
40525d07
JH
868JH/12 Fix check on SMTP command input synchronisation. Previously there were
869 false-negatives in the check that the sender had not preempted a response
870 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 871 awareness of the SMTP input buffering.
40525d07 872
f33875c3
PP
873PP/04 Add commandline_checks_require_admin option.
874 Exim drops privileges sanely, various checks such as -be aren't a
875 security problem, as long as you trust local users with access to their
876 own account. When invoked by services which pass untrusted data to
877 Exim, this might be an issue. Set this option in main configuration
878 AND make fixes to the calling application, such as using `--` to stop
879 processing options.
880
a5ffa9b4
JH
881JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
882 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
883 responses to those, into a single TLS record each way (this usually means
884 a single packet). As a side issue, smtp_enforce_sync now works on TLS
885 connections.
925ac8e4 886
6600985a
PP
887PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
888 affects you only if you're dancing at the edge of the param size limits.
889 If you are, and this message makes sense to you, then: raise the
890 configured limit or use OpenSSL 1.1. Nothing we can do for older
891 versions.
892
ac4d558b
JH
893JH/14 For the "sock" variant of the malware scanner interface, accept an empty
894 cmdline element to get the documented default one. Previously it was
895 inaccessible.
896
e69636bc
JH
897JH/15 Fix a crash in the smtp transport caused when two hosts in succession
898 are unsuable for non-message-specific reasons - eg. connection timeout,
899 banner-time rejection.
900
a843a57e
JH
901JH/16 Fix logging of delivery remote port, when specified by router, under
902 callout/hold.
903
8e041ae0
PP
904PP/06 Repair manualroute's ability to take options in any order, even if one
905 is the name of a transport.
833c70bc
PP
906 Fixes bug 2140.
907
35a04365
HSHR
908HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
909
4226691b
JH
910JH/17 Change the list-building routines interface to use the expanding-string
911 triplet model, for better allocation and copying behaviour.
912
d185889f
JH
913JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
914 Previously it was constructed the first time a possibly-matching string
915 was met in the configuration file input during startup; now it is done
916 during compilation.
917
0a6c178c
JH
918JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
919 compatible one, to avoid the (poorly documented) possibility of a config
920 file in the working directory redirecting the DB files, possibly correpting
02745400 921 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 922
fae8970d
JH
923JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
924 cache-hot. Previously, although the result was properly cached, the
925 initial verify call returned a defer.
926
ad1a76fe 927JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
928 the main verify for receipient in uncached-mode.
929
ad1a76fe
JH
930JH/22 Retire historical build files to an "unsupported" subdir. These are
931 defined as "ones for which we have no current evidence of testing".
932
135e9496
JH
933JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
934 if present. Previously it was ignored.
935
f2ed27cf
JH
936JH/24 Start using specified-initialisers in C structure init coding. This is
937 a C99 feature (it's 2017, so now considered safe).
938
7eb0e5d2
JH
939JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
940 if was a fixed-sized field and bitmask ops via macros; it is now more
941 extensible.
942
4f9f4be4
943PP/07 GitHub PR 56: Apply MariaDB build fix.
944 Patch provided by Jaroslav Škarvada.
945
dc4de9cc
PP
946PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
947 during Coverity cleanups [4.87 JH/47]
948 Diagnosis and fix provided by Michael Fischer v. Mollard.
949
ea18931d
JH
950JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
951 the right size to place the terminating semicolon on its own folded
952 line, the header hash was calculated to an incorrect value thanks to
953 the (relaxed) space the fold became.
954
0768462d 955HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
956 and confused the parent.
957
848214f7
JH
958JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
959 which could crash as a result. This could lead to undeliverable messages.
960
9e0ed81f
JH
961JH/28 Logging: "next input sent too soon" now shows where input was truncated
962 for log purposes.
963
2540f2f8
JH
964JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
965 matters on fast-turnover and PID-randomising systems, which were getting
966 out-of-order delivery.
967
e5ab0ba9
JH
968JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
969 a possibly-overlapping copy. The symptom was that "Remote host closed
970 connection in response to HELO" was logged instead of the actual 4xx
971 error for the HELO.
972
e99a3a6c
JH
973JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
974 Previously only that bufferd was discarded, resulting in SYMTP command
975 desynchronisation.
976
18067c75
JH
977JH/32 DKIM: when a message has multiple signatures matching an identity given
978 in dkim_verify_signers, run the dkim acl once for each. Previously only
979 one run was done. Bug 2189.
980
72934ba7
JH
981JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
982 "panic the current process" to "deliberately defer". The panic log is
983 still written with the problem list name; the mail and reject logs now
984 get a temp-reject line for the message that was being handled, saying
985 something like "domains check lookup or other defer". The SMTP 451
986 message is still "Temporary local problem".
987
625667b6
JH
988JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
989 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
990 freed. CVE-2017-16943.
991
992HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
993 from SMTP input. Previously it was always done; now only done for DATA
994 and not BDAT commands. CVE-2017-16944.
625667b6 995
d21bf202
JH
996JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
997 to the message (such as an overlong header line). Previously this was
998 not done and we did not exit BDAT mode. Followon from the previous item
999 though a different problem.
1000
acfc18c3 1001
fd047340 1002Exim version 4.89
acfc18c3 1003-----------------
4c57a40e 1004
9427e879 1005JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 1006 than -2003 did; needs libidn2 in addition to libidn.
fd047340 1007
7b283890
JH
1008JH/02 The path option on a pipe transport is now expanded before use.
1009
4c57a40e
PP
1010PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
1011 Patch provided by "Björn", documentation fix added too.
1012
5d036699
JH
1013JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
1014 missing a wire-to-host endian conversion.
1015
f4630439
JH
1016JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
1017 close after a BDAT command line could be taken as a following command,
1018 giving a synch failure. Fix by only checking for synch immediately
1019 before acknowledging the chunk.
1020
f988ce57
JS
1021PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
1022 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
1023 macro. Patches provided by Josh Soref.
1024
bd8fbe36
JH
1025JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
1026 Previously we did not; the RFC seems ambiguous and VRFY is not listed
1027 by IANA as a service extension. However, John Klensin suggests that we
1028 should.
1029
1030JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
1031 the dkim code may be unix-mode line endings rather than smtp wire-format
1032 CRLF, so prepend a CR to any bare LF.
fd047340 1033
bd8fbe36 1034JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
1035 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
1036
bd8fbe36
JH
1037JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
1038 the first were themselves being wrongly included in the feed into dkim
1039 processing; with most chunk sizes in use this resulted in an incorrect
1040 body hash calculated value.
1041
eea19017
JH
1042JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
1043 DKIM signature block, for verification. Although advised against by
1044 standards it is specifically not ruled illegal.
1045
44e6651b
JH
1046JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
1047
1048JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
1049 missing a body hash (the bh= tag).
1050
1051JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
1052 It seems that HAProxy sends the Proxy Protocol information in clear and
1053 only then does a TLS startup, so do the same.
1054
1055JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
1056 TCP connections (such as for Spamd) unless the daemon successfully set
1057 Fast Open mode on its listening sockets. This fixes breakage seen on
1058 too-old kernels or those not configured for Fast Open, at the cost of
1059 requiring both directions being enabled for TFO, and TFO never being used
1060 by non-daemon-related Exim processes.
1061
1062JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
1063 endings, at least on the first header line. Try to canonify any that get
1064 past that check, despite the cost.
1065
b6040544
JH
1066JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
1067 now limited to an arbitrary five deep, while parsing addresses with the
1068 strip_excess_angle_brackets option enabled.
1069
f700ea4d
PP
1070PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
1071 instead leave the unprompted TLS handshake in socket buffer for the
1072 TLS library to consume.
1073
da88acae
PP
1074PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
1075
f6ef9370
PP
1076PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
1077
90341c71
JH
1078JH/16 Drop variables when they go out of scope. Memory management drops a whole
1079 region in one operation, for speed, and this leaves assigned pointers
1080 dangling. Add checks run only under the testsuite which checks all
1081 variables at a store-reset and panics on a dangling pointer; add code
1082 explicitly nulling out all the variables discovered. Fixes one known
1083 bug: a transport crash, where a dangling pointer for $sending_ip_address
1084 originally assigned in a verify callout, is re-used.
1085
1ec2ab36
PP
1086PP/06 Drop '.' from @INC in various Perl scripts.
1087
1088PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
1089
1090PP/08 Reduce a number of compilation warnings under clang; building with
1091 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
1092 should be warning-free.
1093
8b2b9480
PP
1094JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
1095
1096HS/01 Fix portability problems introduced by PP/08 for platforms where
1097 realloc(NULL) is not equivalent to malloc() [SunOS et al].
1098
d953610f
HSHR
1099HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
1100 chunk. This allows us to accept broken chunked messages. We need a more
1101 general solution here.
1102
7dc5f827
PP
1103PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
1104 already-broken messages in the queue.
1105
4bb432cb
PP
1106JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
1107
3b1a84c8
PP
1108JH/19 Fix reference counting bug in routing-generated-address tracking.
1109
902fbd69 1110
8d042305
JH
1111Exim version 4.88
1112-----------------
4c57a40e 1113
9094b84b
JH
1114JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
1115 supports it and a size is available (ie. the sending peer gave us one).
8d042305 1116
03d5892b
JH
1117JH/02 The obsolete acl condition "demime" is removed (finally, after ten
1118 years of being deprecated). The replacements are the ACLs
1119 acl_smtp_mime and acl_not_smtp_mime.
1120
4b0fe319
JH
1121JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
1122 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
1123 or even an in-clear connection were permitted. Now, if the host lookup
1124 was dnssec and dane was requested then the host is only used if the
1125 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
1126 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
1127 if one fails this test.
1128 This means that a poorly-configured remote DNS will make it incommunicado;
1129 but it protects against a DNS-interception attack on it.
1130
789f8a4f
JH
1131JH/04 Bug 1810: make continued-use of an open smtp transport connection
1132 non-noisy when a race steals the message being considered.
1133
23bb6982 1134JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 1135 self-signed certificate for inbound TLS connections.
23bb6982 1136
0bd1b1ed 1137JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 1138 in rewrites and routers.
0bd1b1ed 1139
20b9a2dc
JH
1140JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
1141 and logged a warning sing 4.83; now they are a configuration file error.
1142
05392bbc
JH
1143JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
1144 (lacking @domain). Apply the same qualification processing as RCPT.
1145
1a6230a3
JH
1146JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
1147
cfab9d68
JH
1148JH/10 Support ${sha256:} applied to a string (as well as the previous
1149 certificate).
1150
98c82a3d
JH
1151JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
1152 a cutthrough deliver is pending, as we always want to make a connection.
1153 This also avoids re-routing the message when later placing the cutthrough
1154 connection after a verify cache hit.
1155 Do not update it with the verify result either.
1156
1157JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
1158 when routing results in more than one destination address.
1159
ae8386f0
JH
1160JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
1161 signing (which inhibits the cutthrough capability). Previously only
1162 the presence of an option was tested; now an expansion evaluating as
1163 empty is permissible (obviously it should depend only on data available
1164 when the cutthrough connection is made).
1165
0d9fa8c0
JH
1166JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
1167 the relevant preceding SMTP command did not note the pipelining mode.
1168
3581f321
JH
1169JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
1170 Previously they were not counted.
1171
ef3a1a30
JH
1172JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
1173 as one having no matching records. Previously we deferred the message
1174 that needed the lookup.
1175
4c04137d 1176JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
1177 distinguished as "(=".
1178
1435d4b2
JH
1179JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1180 for missing MX records. Previously it only worked for missing A records.
1181
eea0defe
JB
1182JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1183
1184JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1185 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 1186
4c04137d 1187JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
1188 even for a "none" policy. Patch from Tony Meyer.
1189
1c788856
JH
1190JH/22 Fix continued use of a connection for further deliveries. If a port was
1191 specified by a router, it must also match for the delivery to be
1192 compatible.
1193
e3b1f624
JH
1194JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1195 When one of the recipients of a message was unsuitable for the connection
1196 (has no matching addresses), we lost track of needing to mark it
1197 deferred. As a result mail would be lost.
1198
a57ce043
JH
1199JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1200
f59aaaaa 1201JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
1202 takes up less space and should be simpler to maintain. Merge the ACL
1203 condition decode tables also, with similar effect.
d7bed771 1204
d1f9fb42
JH
1205JH/26 Fix problem with one_time used on a redirect router which returned the
1206 parent address unchanged. A retry would see the parent address marked as
1207 delivered, so not attempt the (identical) child. As a result mail would
1208 be lost.
1209
92b0827a
JH
1210JH/27 Fix a possible security hole, wherein a process operating with the Exim
1211 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1212 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1213 itself :(
1214
ddf1b11a
JH
1215JH/28 Enable {spool,log} filesystem space and inode checks as default.
1216 Main config options check_{log,spool}_{inodes,space} are now
1217 100 inodes, 10MB unless set otherwise in the configuration.
1218
3cc3f762
JH
1219JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1220 Previously it only applied to the main-section connection policy
1221 options.
1222
ae5afa61
JH
1223JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1224
317e40ac
PP
1225PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1226 by me. Added RFC7919 DH primes as an alternative.
1227
8b0fb68e
PP
1228PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1229 are not in the system include path.
1230
ad7fc6eb 1231JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 1232 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
1233 Exim did stdio operations after fclose. This was exposed by a recent
1234 change which nulled out the file handle after the fclose.
ad7fc6eb 1235
ee5b1e28
JH
1236JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1237 signed directly by the cert-signing cert, rather than an intermediate
1238 OCSP-signing cert. This is the model used by LetsEncrypt.
1239
5ddc9771
JH
1240JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1241
8d73599f
JH
1242HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1243 an incoming connection.
1244
446415f5
HSHR
1245HS/02 Bug 1802: Do not half-close the connection after sending a request
1246 to rspamd.
1247
8e53a4fc
HSHR
1248HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1249 fallback to "prime256v1".
8d042305 1250
87cb4a16 1251JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 1252 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
1253
1254
0d9b78be
JH
1255Exim version 4.87
1256-----------------
4c57a40e 1257
82d14d6a
JH
1258JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1259 and 3.4.4 - once the server is enabled to respond to an OCSP request
1260 it does even when not requested, resulting in a stapling non-aware
1261 client dropping the TLS connection.
0d9b78be 1262
6c6d6e48
TF
1263TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1264 support variable-length bit vectors. No functional change.
1265
ac881e27
TF
1266TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1267 The I= interface field on outgoing lines is now after the H= remote
1268 host field, same as incoming lines. There is a separate
1269 outgoing_interface log selector which allows you to disable the
1270 outgoing I= field.
1271
c8899c20
JH
1272JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1273 If not running log_selector +smtp_connection the mainlog would be held
1274 open indefinitely after a "too many connections" event, including to a
1275 deleted file after a log rotate. Leave the per net connection logging
1276 leaving it open for efficiency as that will be quickly detected by the
1277 check on the next write.
1278
f1b81d81
HSHR
1279HS/01 Bug 1671: Fix post transport crash.
1280 Processing the wait-<transport> messages could crash the delivery
1281 process if the message IDs didn't exist for some reason. When
1282 using 'split_spool_directory=yes' the construction of the spool
1283 file name failed already, exposing the same netto behaviour.
1284
f38917cc
JH
1285JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1286 mime_regex ACL conditions.
1287
895fbaf2
JH
1288JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1289 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1290 to HELO, local diagnostic string.
1291
805bb5c3
JH
1292JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1293 log line to debug. Even when configured with a tls authenticator many
1294 client connections are expected to not authenticate in this way, so
1295 an authenticate fail is not an error.
1296
56c2a7be
HSHR
1297HS/02 Add the Exim version string to the process info. This way exiwhat
1298 gives some more detail about the running daemon.
1299
4c04137d 1300JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
1301 matter for fast-change records such as DNSBLs.
1302
6f6dedcc
JH
1303JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1304 retry record, even if constant. There may be multiple transports with
1305 different interface settings and the retry behaviour needs to be kept
1306 distinct.
1307
0f557e90
JH
1308JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1309
1310JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1311
ec0eb1a3
JH
1312JH/10 Bug 840: fix log_defer_output option of pipe transport
1313
41e93589
JH
1314JH/11 Bug 830: use same host for all RCPTS of a message, even under
1315 hosts_randomize. This matters a lot when combined with mua_wrapper.
1316
98b98887 1317JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
1318 ${quote_pgsql:<string>} operator.
1319
98b98887
JH
1320JH/13 Bug 1708: avoid misaligned access in cached lookup.
1321
858e91c2
JH
1322JH/14 Change header file name for freeradius-client. Relevant if compiling
1323 with Radius support; from the Gentoo tree and checked under Fedora.
1324
1325JH/15 Bug 1712: Introduce $prdr_requested flag variable
1326
6ff55e50
JH
1327JH/16 Bug 1714: Permit an empty string as expansion result for transport
1328 option transport_filter, meaning no filtering.
1329
3b957582
JB
1330JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1331
23f3dc67
JH
1332JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1333 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 1334 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
1335 If a server certificate is not supplied (via tls_certificate) an error is
1336 logged, and clients will find TLS connections fail on startup. Presumably
1337 they will retry in-clear.
1338 Packagers of Exim are strongly encouraged to create a server certificate
1339 at installation time.
1340
240c288f
JH
1341HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1342 with the $config_file variable.
1343
5ef5dd52
JB
1344JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1345 in transport context, after the attempt, and per-recipient. The latter type
1346 is per host attempted. The event data is the error message, and the errno
1347 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 1348 and the trailing two digits of the smtp 4xx response.
5ef5dd52 1349
e161710d
GF
1350GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1351 to write to mainlog (or rejectlog, paniclog) in the window between file
1352 creation and permissions/ownership being changed. Particularly affects
1353 installations where exicyclog is run as root, rather than exim user;
1354 result is that the running daemon panics and dies.
1355
a159f203
JH
1356JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1357
7f06582c
JH
1358JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1359 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1360 "pri" and "weight". Note that the previous implicit priority given by the
1361 list order is no longer honoured.
1362
4c04137d 1363JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
1364 for DKIM processing.
1365
f0989ec0
JH
1366JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1367 by defining SUPPORT_SOCKS.
74f150bf 1368
cee5f132
JH
1369JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1370 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
1371 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1372 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 1373
8c5d388a
JH
1374JH/27 Move Internationalisation support from Experimental to mainline, enabled
1375 for a build by defining SUPPORT_I18N
1376
2d8d625b
JH
1377JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1378 of the query string, and make ${quote_redis:} do that quoting.
1379
0cbf2b82
JH
1380JH/29 Move Events support from Experimental to mainline, enabled by default
1381 and removable for a build by defining DISABLE_EVENT.
1382
f2f2c91b
JH
1383JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1384
ce325893
JH
1385JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1386 cached by the daemon.
1387
de78e2d5
JH
1388JH/32 Move Redis support from Experimental to mainline, enabled for a build
1389 by defining LOOKUP_REDIS. The libhiredis library is required.
1390
379ba7d0
JH
1391JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1392 keys are given for lookup.
1393
f444c2c7
JH
1394JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1395 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1396 only supported when built with TLS support. The PolarSSL SHA routines
1397 are still used when the TLS library is too old for convenient support.
f444c2c7 1398
a57b6200
JH
1399JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1400 openssl_options), for security. OpenSSL forces this from version 1.1.0
1401 server-side so match that on older versions.
1402
07c73177 1403JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1404 allocation for $value could be released as the expansion processing
07c73177 1405 concluded, but leaving the global pointer active for it.
fa01e4f8 1406
4f6ae5c3
JH
1407JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1408 and to use the domains and local_parts ACL conditions.
1409
1bc460a6
JH
1410JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1411 incorrectly not doubled on cutthrough transmission, hence seen as a
1412 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1413 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1414 via the normal store-and-forward channel. This could result in duplicates
1415 received - but deduplicating mailstores were liable to retain only the
1416 initial truncated version.
1417
ab9152ff 1418JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1419
67e87fcf
JH
1420JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1421
ab9152ff
JH
1422JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1423 we're in there, support oversigning also; bug 1309.
1424
af483912
JH
1425JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1426
bc3c7bb7 1427HS/04 Add support for keep_environment and add_environment options.
df3def24 1428
13559da6
JH
1429JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1430 either intentional arithmetic overflow during PRNG, or testing config-
1431 induced overflows.
1432
59eaad2b
JH
1433JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1434 delivery resulted in actual delivery. Cancel cutthrough before DATA
1435 stage.
1436
f9334a28
JH
1437JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1438 rejects a recipient: pass the reject to the originator.
1439
dc8091e7
JH
1440JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1441 Many were false-positives and ignorable, but it's worth fixing the
1442 former class.
1443
dfe7d917
JH
1444JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1445 for the new environment-manipulation done at startup. Move the routines
1446 from being local to tls.c to being global via the os.c file.
1447
93cc2d6e
JH
1448JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1449 an extract embedded as result-arg for a map, the first arg for extract
1450 is unavailable so we cannot tell if this is a numbered or keyed
1451 extraction. Accept either.
1452
13559da6 1453
9c695f6d
JH
1454Exim version 4.86
1455-----------------
4c57a40e 1456
9c695f6d
JH
1457JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1458 expanded.
1459
506900af
JH
1460JH/02 The smtp transport option "multi_domain" is now expanded.
1461
ad07e9ad
JH
1462JH/03 The smtp transport now requests PRDR by default, if the server offers
1463 it.
1464
01a4a5c5 1465JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1466 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1467 can be used to disable this per-host. The build option
1468 EXPERIMENTAL_CERTNAMES is withdrawn.
1469
cb1d7830 1470JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1471 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1472 For GnuTLS, only version 3.0.20 or later.
1473
610ff438 1474JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1475 (but not required) by default. The verification status is now logged by
1476 default, for both outbound TLS and client-certificate supplying inbound
1477 TLS connections
610ff438 1478
f926e272
JH
1479JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1480 sites use this now.
1481
50dc7409
JH
1482JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1483 Status Notification (bounce) messages are now MIME format per RFC 3464.
1484 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1485 under the control of the dsn_advertise_hosts option, and routers may
1486 have a dsn_lasthop option.
1487
0f0c8159
JH
1488JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1489 default, modifiable by a malware= option. The list separator for
23763898 1490 the options can now be changed in the usual way. Bug 68.
4e71661f 1491
1ad6489e
JH
1492JH/10 The smtp_receive_timeout main option is now expanded before use.
1493
aeaf5db3
JH
1494JH/11 The incoming_interface log option now also enables logging of the
1495 local interface on delivery outgoing connections.
1496
5032d1cf
JH
1497JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1498 if the interface and destination host and port all match.
1499
7e8360e6
JH
1500JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1501 /defer_ok option.
1502
c5f280e2
AL
1503JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1504 Patch from Andrew Lewis.
1505
fd4d8871 1506JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1507 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1508 modifiers per server. Patch originally by <rommer@active.by>.
1509
1510JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1511 and remote servers. Remote servers can be IPv6 addresses, and
1512 specify a port-range.
fd4d8871 1513
23763898
JH
1514JH/17 Bug 68: The spamd_address main option now supports an optional
1515 timeout value per server.
1516
2ad78978
JH
1517JH/18 Bug 1581: Router and transport options headers_add/remove can
1518 now have the list separator specified.
1519
8a512ed5 1520JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1521 option values.
8a512ed5 1522
82c0c8ea 1523JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1524 under OpenSSL.
1525
cc00f4af
JH
1526JH/21 Support for the A6 type of dns record is withdrawn.
1527
82c0c8ea
JH
1528JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1529 rather than the verbs used.
1530
b980ed83
JH
1531JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1532 from 255 to 1024 chars.
1533
6c9ed72e
JH
1534JH/24 Verification callouts now attempt to use TLS by default.
1535
cfab9d68 1536HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1537 are generic router options now. The defaults didn't change.
50dc7409 1538
f846c8f5
JH
1539JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1540 Original patch from Alexander Shikoff, worked over by JH.
1541
fd4c285c
HSHR
1542HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1543 files if ZCAT_COMMAND is not executable.
1544
4c04137d 1545JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1546
d2a2c69b
JH
1547JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1548
8241d8dd
JH
1549JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1550 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1551 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1552 (and we were inconsistent anyway for A-only vs AAAA+A).
1553
1f12df4d
JH
1554JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1555
1f155f8e
JH
1556JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1557 when evaluating $sender_host_dnssec.
1558
1705dd20
JH
1559JH/31 Check the HELO verification lookup for DNSSEC, adding new
1560 $sender_helo_dnssec variable.
1561
038597d2
PP
1562JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1563
474f71bf
JH
1564JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1565
7137ca4b
JH
1566JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1567
dcb1095c
JH
1568JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1569 documented as working, but never had. Support all but $spam_report.
1570
2f460950
JH
1571JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1572 added for tls authenticator.
1573
2f680c0c
HSHR
1574HS/03 Add perl_taintmode main config option
1575
9c695f6d 1576
e449c3b0
TL
1577Exim version 4.85
1578-----------------
4c57a40e 1579
e449c3b0
TL
1580TL/01 When running the test suite, the README says that variables such as
1581 no_msglog_check are global and can be placed anywhere in a specific
1582 test's script, however it was observed that placement needed to be near
1583 the beginning for it to behave that way. Changed the runtest perl
1584 script to read through the entire script once to detect and set these
1585 variables, reset to the beginning of the script, and then run through
1586 the script parsing/test process like normal.
1587
ac20058f
TL
1588TL/02 The BSD's have an arc4random API. One of the functions to induce
1589 adding randomness was arc4random_stir(), but it has been removed in
1590 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1591 function when detected.
1592
a9b8ec8b
JH
1593JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1594 cause callback expansion.
1595
6286d7c4
TL
1596TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1597 syntax errors in an expansion can be treated as a string instead of
1598 logging or causing an error, due to the internal use of bool_lax
1599 instead of bool when processing it.
1600
0f06b4f2 1601JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1602 server certificates when making smtp deliveries.
1603
be36e572
JH
1604JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1605
ac4ef9bd
JH
1606JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1607
0eb51736
TL
1608TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1609
c713ca4b
TL
1610TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1611 Merged patch from Sebastian Wiedenroth.
e449c3b0 1612
bd21a787
WB
1613JH/05 Fix results-pipe from transport process. Several recipients, combined
1614 with certificate use, exposed issues where response data items split
1615 over buffer boundaries were not parsed properly. This eventually
1616 resulted in duplicates being sent. This issue only became common enough
4c04137d 1617 to notice due to the introduction of connection certificate information,
bd21a787
WB
1618 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1619
8bc732e8
JH
1620JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1621 size buffer was used, resulting in syntax errors when an expansion
1622 exceeded it.
1623
a7fec7a7
JH
1624JH/07 Add support for directories of certificates when compiled with a GnuTLS
1625 version 3.3.6 or later.
1626
4c04137d 1627JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1628 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1629 both become "event_action", the variables become $event_name, $event_data
aec45841 1630 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1631 routers, transports and related events. The tls:cert event is now also
1632 raised for inbound connections, if the main configuration event_action
1633 option is defined.
774ef2d7 1634
eca4debb
TL
1635TL/06 In test suite, disable OCSP for old versions of openssl which contained
1636 early OCSP support, but no stapling (appears to be less than 1.0.0).
1637
8d692470
JH
1638JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1639 server certificate names available under the smtp transport option
1640 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1641 matches.
1642
e9477a08
JH
1643JH/10 Time-related extraction expansions from certificates now use the main
1644 option "timezone" setting for output formatting, and are consistent
1645 between OpenSSL and GnuTLS compilations. Bug 1541.
1646
ad4c5ff9
JH
1647JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1648 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1649
1650JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1651 include certificate info, eximon was claiming there were spoolfile
1652 syntax errors.
1653
3394b36a 1654JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1655
1656JH/14 Log delivery-related information more consistently, using the sequence
1657 "H=<name> [<ip>]" wherever possible.
1658
3394b36a
TL
1659TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1660 are problematic for Debian distribution, omit them from the release
1661 tarball.
1662
ad4c5ff9
JH
1663JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1664
4c04137d 1665JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1666 Bug 1561.
1667
1668JH/17 Fix a null-indirection in certextract expansions when a nondefault
1669 output list separator was used.
1670
8bc732e8 1671
1f0ebb98
TL
1672Exim version 4.84
1673-----------------
09728d20
TL
1674TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1675 checkers that were complaining about end of non-void function with no
1676 return.
1f0ebb98 1677
a612424f 1678JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1679 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1680
1681JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1682
1683TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1684 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1685
1f0ebb98 1686
c0e56233
TF
1687Exim version 4.83
1688-----------------
1689
1690TF/01 Correctly close the server side of TLS when forking for delivery.
1691
1692 When a message was received over SMTP with TLS, Exim failed to clear up
1693 the incoming connection properly after forking off the child process to
1694 deliver the message. In some situations the subsequent outgoing
1695 delivery connection happened to have the same fd number as the incoming
1696 connection previously had. Exim would try to use TLS and fail, logging
1697 a "Bad file descriptor" error.
1698
7245734e
TF
1699TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1700 utilities have not been installed.
1701
fd5dad68
JH
1702JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1703 temporary space as the ACL may create new global variables.
1704
5428a946
TL
1705TL/01 LDAP support uses per connection or global context settings, depending
1706 upon the detected version of the libraries at build time.
1707
a3c86431
TL
1708TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1709 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1710 were a direct connection from the outside internet. PPv2 support was
1711 updated based on HAProxy spec change in May 2014.
a3c86431 1712
aa26e137
JH
1713JH/02 Add ${listextract {number}{list}{success}{fail}}.
1714
5a1b8443
WB
1715TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1716 Properly escape header and check for NULL return.
1717
72c9e342
PP
1718PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1719 not dns_use_dnssec.
1720
76f44207
WB
1721JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1722
770747fd
MFM
1723TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1724 characters in header names, implemented as a verify condition.
1725 Contributed by Michael Fischer v. Mollard.
1726
8ddef691 1727TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1728 results permerror and temperror. Previous values are deprecated but
1729 still accepted. In a future release, err_perm and err_temp will be
1730 completely removed, which will be a backward incompatibility if the
1731 ACL tests for either of these two old results. Patch contributed by
8ddef691 1732 user bes-internal on the mailing list.
c0e56233 1733
b9c2e32f
AR
1734JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1735
e45a1c37
JH
1736JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1737 selectors, in both main and reject logs.
1738
67d81c10
JH
1739JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1740 failed delivery.
1741
b1f8e4f8
JH
1742JH/07 Add malware type "sock" for talking to simple daemon.
1743
511a6c14 1744JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1745
1746JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1747 routers/transports under cutthrough routing.
214042d2 1748
51c7471d
JH
1749JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1750 numbers. Touch up "bool" conditional to keep the same definition.
1751
3695be34
TL
1752TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1753
1e06383a
TL
1754JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1755
76146973
JH
1756JH/12 Expand items in router/transport headers_add or headers_remove lists
1757 individually rather than the list as a whole. Bug 1452.
1758
1759 Required for reasonable handling of multiple headers_ options when
1760 they may be empty; requires that headers_remove items with embedded
1761 colons must have them doubled (or the list-separator changed).
1762
8c8b8274
TL
1763TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1764 view the policy declared in the DMARC record. Currently, $dmarc_status
1765 is a combined value of both the record presence and the result of the
1766 analysis.
b1f8e4f8 1767
35aba663
JH
1768JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1769
8c51eead 1770JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1771 dnslookup router and the smtp transport (applying to the forward
1772 lookup).
8c51eead 1773
deae092e
HS
1774TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1775 of ldap servers used for a specific lookup. Patch provided by Heiko
1776 Schlichting.
35aba663 1777
fd3b6a4a 1778JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1779 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1780
8d91c6dc
LT
1781TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1782 Patch submitted by Lars Timman.
1783
2b4a568d
JH
1784JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1785
d2af03f4
HS
1786TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1787 Requires trusted mode and valid format message id, aborts otherwise.
1788 Patch contributed by Heiko Schlichting.
1789
9d1c15ef
JH
1790JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1791 certextract with support for various fields. Bug 1358.
1792
44662487
JH
1793JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1794 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1795 hosts_request_ocsp.
1796
ed3bba5f 1797JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1798 operate on certificate variables to give certificate fingerprints
9ef9101c 1799 Also new ${sha256:cert_variable}.
44662487 1800
8ccd00b1
JH
1801JH/23 The PRDR feature is moved from being Experimental into the mainline.
1802
8ded8589
TL
1803TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1804 Christian Aistleitner.
1805
f2de3a33
JH
1806JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1807
6eb02f88
TL
1808TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1809 file. Patch from Wolfgang Breyha.
1810
00bff6f6
JH
1811JH/25 Expand the coverage of the delivery $host and $host_address to
1812 client authenticators run in verify callout. Bug 1476.
1813
071c51f7
JH
1814JH/26 Port service names are now accepted for tls_on_connect_ports, to
1815 align with daemon_smtp_ports. Bug 72.
1816
a6d4c44e
TF
1817TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1818 support and error reporting did not work properly.
1819
3ae173e7
ACK
1820TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1821 and is readable. Patch from Andrew Colin Kissa.
1822
c13d09b8
TL
1823TL/14 Enhance documentation of ${run expansion and how it parses the
1824 commandline after expansion, particularly in the case when an
1825 unquoted variable expansion results in an empty value.
1826
0df4ab80
JH
1827JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1828
66be95e0
PP
1829PP/02 Fix internal collision of T_APL on systems which support RFC3123
1830 by renaming away from it. Addresses GH issue 15, reported by
1831 Jasper Wallace.
1832
1bd0d12b
JH
1833JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1834
0de7239e
TL
1835TL/15 SECURITY: prevent double expansion in math comparison functions
1836 (can expand unsanitized data). Not remotely exploitable.
1837 CVE-2014-2972
1838
fd3b6a4a 1839
2c422e6f 1840Exim version 4.82
98a90c36
PP
1841-----------------
1842
1843PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1844
12f69989
PP
1845PP/02 Make -n do something, by making it not do something.
1846 When combined with -bP, the name of an option is not output.
1847
54c90be1
PP
1848PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1849 by GnuTLS.
1850
1f4a55da
PP
1851PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1852 $sender_host_name and config options to manage this, and basic check
1853 routines.
1854
13363eba 1855PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1856
66645890 1857PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1858 (Only plugin which currently uses this is kerberos4, which nobody should
1859 be using, but we should make it available and other future plugins might
1860 conceivably use it, even though it would break NAT; stuff *should* be
1861 using channel bindings instead).
66645890 1862
a3fb9793 1863PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1864 name; added for Sendmail compatibility; requires admin caller.
1865 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1866 just ignore it); requires trusted caller.
a3fb9793 1867 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1868 Bugzilla 1117.
a3fb9793 1869
d27f98fe 1870TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1871
6822b909
TL
1872TL/02 Add +smtp_confirmation as a default logging option.
1873
e7568d51
TL
1874TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1875 Patch by Magnus Holmgren from 2007-02-20.
1876
ae0e32ee 1877TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1878 Bugzilla 1283 - Spec typo.
97f42f10 1879 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1880
1881TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1882
e2658fff
TL
1883TL/06 Add Experimental DMARC support using libopendmarc libraries.
1884
83712b39
TL
1885TL/07 Fix an out of order global option causing a segfault. Reported to dev
1886 mailing list by by Dmitry Isaikin.
1887
976b7e9f
JH
1888JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1889
be4a1376
JH
1890JH/02 Support "G" suffix to numbers in ${if comparisons.
1891
ec4b68e5
PP
1892PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1893
d7148a07
NM
1894NM/01 Bugzilla 1197 - Spec typo
1895 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1896
585121e2 1897JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1898
2519e60d
TL
1899PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1900 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1901 function.
a5f239e4 1902
13d08c90
PP
1903PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1904 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1905
bef3ea7f
JH
1906JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1907 "acl {{name}{arg}...}", and optional args on acl condition
1908 "acl = name arg..."
a5f239e4 1909
846726c5
JH
1910JH/05 Permit multiple router/transport headers_add/remove lines.
1911
3a796370
JH
1912JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1913
ea722490 1914JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1915 Performance patch from Paul Fisher. Bugzilla 1262.
1916
b1b05573
JH
1917JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1918 Bugzilla 884.
1919
362145b5
JH
1920JH/09 Add $headers_added variable, with content from use of ACL modifier
1921 add_header (but not yet added to the message). Bugzilla 199.
1922
3c0a92dc
JH
1923JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1924 Pulled from Bugzilla 817 by Wolfgang Breyha.
1925
6d7c6175
PP
1926PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1927 CVE-2012-5671
e78e6ecf 1928 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1929
6f123593
JH
1930JH/11 Add A= logging on delivery lines, and a client_set_id option on
1931 authenticators.
1932
c8e2fc1e
JH
1933JH/12 Add optional authenticated_sender logging to A= and a log_selector
1934 for control.
1935
005ac57f
PP
1936PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1937
3f1df0e3
PP
1938PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1939 advertise SMTP AUTH mechanism to us, instead of a generic
1940 protocol violation error. Also, make Exim more robust to bad
1941 data from the Dovecot auth socket.
1942
67bd1ab3
TF
1943TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1944
1945 When a queue runner is handling a message, Exim first routes the
1946 recipient addresses, during which it prunes them based on the retry
1947 hints database. After that it attempts to deliver the message to
1948 any remaining recipients. It then updates the hints database using
1949 the retry rules.
1950
1951 So if a recipient address works intermittently, it can get repeatedly
1952 deferred at routing time. The retry hints record remains fresh so the
1953 address never reaches the final cutoff time.
1954
1955 This is a fairly common occurrence when a user is bumping up against
1956 their storage quota. Exim had some logic in its local delivery code
1957 to deal with this. However it did not apply to per-recipient defers
1958 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1959
1ddeb334
TF
1960 This change adds a proper retry rule check during routing so that the
1961 final cutoff time is checked against the message's age. We only do
1962 this check if there is an address retry record and there is not a
1963 domain retry record; this implies that previous attempts to handle
1964 the address had the retry_use_local_parts option turned on. We use
1965 this as an approximation for the destination being like a local
1966 delivery, as in LMTP.
67bd1ab3
TF
1967
1968 I suspect this new check makes the old local delivery cutoff check
1969 redundant, but I have not verified this so I left the code in place.
1970
326cdc37
TF
1971TF/02 Correct gecos expansion when From: is a prefix of the username.
1972
1973 Test 0254 submits a message to Exim with the header
1974
1975 Resent-From: f
1976
1977 When I ran the test suite under the user fanf2, Exim expanded
1978 the header to contain my full name, whereas it should have added
1979 a Resent-Sender: header. It erroneously treats any prefix of the
1980 username as equal to the username.
1981
1982 This change corrects that bug.
1983
f62514b3
GF
1984GF/01 DCC debug and logging tidyup
1985 Error conditions log to paniclog rather than rejectlog.
1986 Debug lines prefixed by "DCC: " to remove any ambiguity.
1987
eb505532
TF
1988TF/03 Avoid unnecessary rebuilds of lookup-related code.
1989
14c7b357
PP
1990PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1991 Bug spotted by Jeremy Harris; was flawed since initial commit.
1992 Would have resulted in OCSP responses post-SNI triggering an Exim
1993 NULL dereference and crash.
1994
94eaf700
PP
1995JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1996
6f5a440a
PP
1997PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1998 Bug detection, analysis and fix by Samuel Thibault.
1999 Bugzilla 1331, Debian bug #698092.
2000
514ee161
SC
2001SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
2002
fd98a5c6
JH
2003JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
2004 Server implementation by Todd Lyons, client by JH.
2005 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
2006 config variable "prdr_enable" controls whether the server
2007 advertises the facility. If the client requests PRDR a new
2008 acl_data_smtp_prdr ACL is called once for each recipient, after
2009 the body content is received and before the acl_smtp_data ACL.
4c04137d 2010 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
2011 on the smtp transport, and the server advertisement.
2012 Default client logging of deliveries and rejections involving
2013 PRDR are flagged with the string "PRDR".
2014
035c7f1e
PP
2015PP/16 Fix problems caused by timeouts during quit ACLs trying to double
2016 fclose(). Diagnosis by Todd Lyons.
2017
ff284120
PP
2018PP/17 Update configure.default to handle IPv6 localhost better.
2019 Patch by Alain Williams (plus minor tweaks).
2020 Bugzilla 880.
2021
26e72755
PP
2022PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
2023 This is now consistent with GnuTLS, and is now documented: the
2024 previous undocumented portable approach to treating the option as
2025 unset was to force an expansion failure. That still works, and
2026 an empty string is now equivalent.
2027
0fbd9bff
PP
2028PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
2029 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
2030 not performing validation itself.
2031
700d22f3
PP
2032PP/20 Added force_command boolean option to pipe transport.
2033 Patch from Nick Koston, of cPanel Inc.
2034
fcc8e047
JH
2035JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
2036 Bugzilla 321, 823.
2037
4c04137d 2038TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 2039
8c020188
PP
2040PP/21 Fix eximon continuous updating with timestamped log-files.
2041 Broken in a format-string cleanup in 4.80, missed when I repaired the
2042 other false fix of the same issue.
2043 Report and fix from Heiko Schlichting.
2044 Bugzilla 1363.
2045
d13cdd30
PP
2046PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
2047 Report from Prashanth Katuri.
2048
e2fbf4a2
PP
2049PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
2050 It's SecureTransport, so affects any MacOS clients which use the
2051 system-integrated TLS libraries, including email clients.
2052
f4c1088b
PP
2053PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
2054 using a MIME ACL for non-SMTP local injection.
2055 Report and assistance in diagnosis by Warren Baker.
2056
c5c2182f
PP
2057TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
2058
73431ca9
JH
2059JH/16 Fix comparisons for 64b. Bugzilla 1385.
2060
2d07a215
TL
2061TL/09 Add expansion variable $authenticated_fail_id to keep track of
2062 last id that failed so it may be referenced in subsequent ACL's.
2063
a30a8861
TL
2064TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
2065 Alexander Miroch.
2066
33382dd9
TL
2067TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
2068 ldap library initialization, allowing self-signed CA's to be
2069 used. Also properly sets require_cert option later in code by
2070 using NULL (global ldap config) instead of ldap handle (per
2071 session). Bug diagnosis and testing by alxgomz.
6d7c6175 2072
046172e6
TL
2073TL/12 Enhanced documentation in the ratelimit.pl script provided in
2074 the src/util/ subdirectory.
2075
581d7bee 2076TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 2077 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
2078 EXPERIMENTAL_TPDA.
2079
2080TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
2081 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
2082 redis_servers = needs to be configured which will be used by the redis
2083 lookup. Patch from Warren Baker, of The Packet Hub.
2084
237b2cf2
TL
2085TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
2086
9fc5a352
TL
2087TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
2088 hostname or reverse DNS when processing a host list. Used suggestions
2089 from multiple comments on this bug.
1a7b746d 2090
b10e4ec2
TL
2091TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
2092
e2cebd74
TL
2093TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
2094 Missed a few lines, added it to make the runtest require no keyboard
2095 interaction.
2096
2097TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
2098 contains upper case chars. Make router use caseful_local_part.
2099
2519e60d
TL
2100TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
2101 support when GnuTLS has been built with p11-kit.
2102
e78e6ecf 2103
4263f395
PP
2104Exim version 4.80.1
2105-------------------
2106
2107PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
2108 CVE-2012-5671
2c422e6f 2109 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 2110
ea722490 2111
b1770b6e 2112Exim version 4.80
0599f9cf
PP
2113-----------------
2114
2115PP/01 Handle short writes when writing local log-files.
2116 In practice, only affects FreeBSD (8 onwards).
2117 Bugzilla 1053, with thanks to Dmitry Isaikin.
2118
23c7e742
NM
2119NM/01 Bugzilla 949 - Documentation tweak
2120
b322aac8
NM
2121NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
2122 improved.
2123
4a891427
NM
2124NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
2125
c1e794ba 2126PP/02 Implemented gsasl authenticator.
b322aac8 2127
97753960
PP
2128PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
2129
2130PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
2131 `pkg-config foo` for cflags/libs.
2132
df6303fa
PP
2133PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
2134 with rest of GSASL and with heimdal_gssapi.
2135
7e6a8985
PP
2136PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
2137 `pkg-config foo` for cflags/libs for the TLS implementation.
2138
f1e05cc7 2139PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
2140 properties get this fed in as external SSF. A number of robustness
2141 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 2142
4c287009
PP
2143PP/08 cyrus_sasl server now expands the server_realm option.
2144
b98bb9ac
PP
2145PP/09 Bugzilla 1214 - Log authentication information in reject log.
2146 Patch by Jeremy Harris.
2147
4a6a987a
PP
2148PP/10 Added dbmjz lookup type.
2149
c45dd180 2150PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 2151
7db8d074
PP
2152PP/12 MAIL args handles TAB as well as SP, for better interop with
2153 non-compliant senders.
2154 Analysis and variant patch by Todd Lyons.
2155
eae0036b 2156NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 2157 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
2158 Patch from Dirk Mueller <dmueller@suse.com>
2159
dec5017e
PP
2160PP/13 tls_peerdn now print-escaped for spool files.
2161 Observed some $tls_peerdn in wild which contained \n, which resulted
2162 in spool file corruption.
2163
c80c5570
PP
2164PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
2165 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
2166 or write after TLS renegotiation, which otherwise led to messages
2167 "Got SSL error 2".
2168
076b11e2
PP
2169TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
2170 as a tracking header (ie: a signed header comes before the signature).
2171 Patch from Wolfgang Breyha.
2172
5407bfff
JH
2173JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2174 comma-sep list; embedded commas doubled.
2175
9e45c72b
PP
2176JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2177
e74376d8
PP
2178PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2179 diagnostics.
2180 Report and patch from Dmitry Banschikov.
2181
4c04137d 2182PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
2183 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2184 failures. We appear to now support TLS1.1+ with Exim.
2185
7be682ca
PP
2186PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2187 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
2188 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2189 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 2190
ef840681
PP
2191PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2192 NULL dereference. Report and patch from Alun Jones.
2193
5bfb4cdf
PP
2194PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2195 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2196 Not seeing resolver debug output on NetBSD, but suspect this is a
2197 resolver implementation change.
2198
c6e95d22
PP
2199PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2200 Left warnings. Added "eximon gdb" invocation mode.
2201
9cbad13b
PP
2202PP/21 Defaulting "accept_8bitmime" to true, not false.
2203
9ee44efb
PP
2204PP/22 Added -bw for inetd wait mode support.
2205
6a6084f8
PP
2206PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2207 locate the relevant includes and libraries. Made this the default.
2208
12dd53c7
PP
2209PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2210 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2211
9e45c72b 2212JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
2213 This may cause build issues on older platforms.
2214
17c76198
PP
2215PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2216 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2217 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2218 Added SNI support via GnuTLS too.
af3498d6 2219 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 2220
53947857 2221PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 2222
eae0036b 2223PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
2224 Applied second patch from Janne, implementing suggestion to default
2225 multiple-strings-in-record handling to match SPF spec.
eae0036b 2226
9e45c72b 2227JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 2228
7390e768
PP
2229PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2230 read-only, out of scope).
2231 Patch from Wolfgang Breyha, report from Stuart Northfield.
2232
08488c86
PP
2233PP/29 Fix three issues highlighted by clang analyser static analysis.
2234 Only crash-plausible issue would require the Cambridge-specific
2235 iplookup router and a misconfiguration.
2236 Report from Marcin Mirosław.
2237
6475bd82
PP
2238PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2239
81f91683
PP
2240PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2241 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2242 As part of this, removing so much warning spew let me fix some minor
2243 real issues in debug logging.
2244
5779e6aa
PP
2245PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2246 assignment on my part. Fixed.
2247
3375e053
PP
2248PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2249 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2250 Janne Snabb (who went above and beyond: thank you).
2251
2252PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2253 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
2254 relatively easy to get wrong. Should also expose TLS library linkage
2255 problems.
3375e053 2256
9d26b8c0
PP
2257PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2258 64-bit ${eval} (JH/03).
2259
57eb9e91 2260PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
2261 GNU libc to support some of the 64-bit stuff, should not lead to
2262 conflicts. Defined before os.h is pulled in, so if a given platform
2263 needs to override this, it can.
2264
16880d1a
PP
2265PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2266 protection layer was required, which is not implemented.
2267 Bugzilla 1254, patch from Wolfgang Breyha.
2268
a799883d
PP
2269PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2270 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2271 tls_dhparam take prime identifiers. Also unbreak combination of
2272 OpenSSL+DH_params+TLSSNI.
2273
3ecab157 2274PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 2275
0599f9cf 2276
867fcbf5
PP
2277Exim version 4.77
2278-----------------
2279
2280PP/01 Solaris build fix for Oracle's LDAP libraries.
2281 Bugzilla 1109, patch from Stephen Usher.
2282
f1a29782
TF
2283TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2284
ab42bd23
TK
2285TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2286 whitespace trailer
867fcbf5 2287
0ca0cf52
TF
2288TF/02 Fix a couple more cases where we did not log the error message
2289 when unlink() failed. See also change 4.74-TF/03.
2290
921b12ca
TF
2291TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2292 lock up or crash if it happened to be inside a call to libc when it
2293 got a SIGUSR1 from exiwhat.
2294
2295 The SIGUSR1 handler appends the current process status to the process
2296 log which is later printed by exiwhat. It used to use the general
2297 purpose logging code to do this, but several functions it calls are
2298 not safe for signals.
2299
2300 The new output code in the SIGUSR1 handler is specific to the process
2301 log, and simple enough that it's easy to inspect for signal safety.
2302 Removing some special cases also simplifies the general logging code.
2303 Removing the spurious timestamps from the process log simplifies
2304 exiwhat.
2305
c99ce5c9
TF
2306TF/04 Improved ratelimit ACL condition.
2307
2308 The /noupdate option has been deprecated in favour of /readonly which
2309 has clearer semantics. The /leaky, /strict, and /readonly update modes
2310 are mutually exclusive. The update mode is no longer included in the
2311 database key; it just determines when the database is updated. (This
4c04137d 2312 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
2313
2314 Exim now checks that the per_* options are used with an update mode that
2315 makes sense for the current ACL. For example, when Exim is processing a
2316 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2317 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2318 must specify per_mail/readonly. If you omit the update mode it defaults to
2319 /leaky where that makes sense (as before) or /readonly where required.
2320
2321 The /noupdate option is now undocumented but still supported for
2322 backwards compatibility. It is equivalent to /readonly except that in
2323 ACLs where /readonly is required you may specify /leaky/noupdate or
2324 /strict/noupdate which are treated the same as /readonly.
2325
2326 A useful new feature is the /count= option. This is a generalization
2327 of the per_byte option, so that you can measure the throughput of other
2328 aggregate values. For example, the per_byte option is now equivalent
2329 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2330
2331 The per_rcpt option has been generalized using the /count= mechanism
2332 (though it's more complicated than the per_byte equivalence). When it is
2333 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2334 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2335 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2336 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2337 Note that using per_rcpt with a non-readonly update mode in more than
2338 one ACL will cause the recipients to be double-counted. (The per_mail
2339 and per_byte options don't have this problem.)
2340
2341 The handling of very low rates has changed slightly. If the computed rate
2342 is less than the event's count (usually one) then this event is the first
2343 after a long gap. In this case the rate is set to the same as this event's
2344 count, so that the first message of a spam run is counted properly.
2345
2346 The major new feature is a mechanism for counting the rate of unique
2347 events. The new per_addr option counts the number of different
2348 recipients that someone has sent messages to in the last time period. It
2349 behaves like per_rcpt if all the recipient addresses are different, but
2350 duplicate recipient addresses do not increase the measured rate. Like
2351 the /count= option this is a general mechanism, so the per_addr option
2352 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2353 example, measure the rate that a client uses different sender addresses
2354 with the options per_mail/unique=$sender_address. There are further
2355 details in the main documentation.
2356
3634fc25
TF
2357TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2358
792e8a19
TF
2359TF/06 Removed a few PCRE remnants.
2360
5901f0ab
TF
2361TF/07 Automatically extract Exim's version number from tags in the git
2362 repository when doing development or release builds.
2363
7f2a2a43
PP
2364PP/02 Raise smtp_cmd_buffer_size to 16kB.
2365 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 2366
061b7ebd
PP
2367PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2368 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2369 Bugzilla 97.
2370
e12f8c32
PP
2371PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2372
9e949f00 2373PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
2374 Bugzilla 1078. Patch from John Horne.
2375
2376PP/06 Stop make process more reliably on build failure.
2377 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 2378
555ae6af 2379PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
2380 Bugzilla 1089. Patch from Heiko Schlittermann.
2381
2382PP/08 Handle ${run} returning more data than OS pipe buffer size.
2383 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 2384
6f7fe114
PP
2385PP/09 Handle IPv6 addresses with SPF.
2386 Bugzilla 860. Patch from Wolfgang Breyha.
2387
c566dd90
PP
2388PP/10 GnuTLS: support TLS 1.2 & 1.1.
2389 Bugzilla 1156.
89f897c3
PP
2390 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2391 Bugzilla 1095.
c566dd90 2392
d6cc7c78 2393PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2394 New compile-time build option, EXPAND_LISTMATCH_RHS.
2395 New expansion conditions, "inlist", "inlisti".
2396
0d0e4455
PP
2397PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2398
3399bb60 2399PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2400
2401PP/14 fix log_write() format string regression from TF/03.
2402 Bugzilla 1152. Patch from Dmitry Isaikin.
2403
0ca0cf52 2404
10906672
PP
2405Exim version 4.76
2406-----------------
2407
2408PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2409
754a0503
PP
2410PP/02 Harmonised TLS library version reporting; only show if debugging.
2411 Layout now matches that introduced for other libraries in 4.74 PP/03.
2412
c0c7b2da
PP
2413PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2414
e97d1f08
PP
2415PP/04 New "dns_use_edns0" global option.
2416
084c1d8c
PP
2417PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2418 Bugzilla 1098.
2419
4e7ee012
PP
2420PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2421 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2422
c8d52a00
PP
2423TK/01 Updated PolarSSL code to 0.14.2.
2424 Bugzilla 1097. Patch from Andreas Metzler.
2425
54e7ce4a
PP
2426PP/07 Catch divide-by-zero in ${eval:...}.
2427 Fixes bugzilla 1102.
2428
5ee6f336
PP
2429PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2430 Bugzilla 1104.
2431
c8d52a00 2432TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2433 format-string attack -- SECURITY: remote arbitrary code execution.
2434
2435TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2436 time unintentionally subject to list matching rules, letting the header
2437 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2438 arbitrary string expansion). This allowed for information disclosure.
2439
2440PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2441 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2442
10906672 2443
aa097c4c
NM
2444Exim version 4.75
2445-----------------
2446
4c04137d 2447NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2448 Bugzilla 1073
2449
7f3d9eff
TF
2450TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2451 This fixes portability to compilers other than gcc, notably
2452 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2453
159f52d2
TF
2454TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2455 makefiles for portability to HP-UX and POSIX correctness.
2456
0cc9542a
PP
2457PP/01 Permit LOOKUP_foo enabling on the make command-line.
2458 Also via indented variable definition in the Makefile.
2459 (Debugging by Oliver Heesakkers).
2460
f7274286
PP
2461PP/02 Restore caching of spamd results with expanded spamd_address.
2462 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2463
7b797365
PP
2464PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2465 Improves build reliability. Fix from: Frank Elsner
2466
caacae52
NM
2467NM/02 Fix wide character breakage in the rfc2047 coding
2468 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2469
09dcaba9
NM
2470NM/03 Allow underscore in dnslist lookups
2471 Fixes bug 1026. Patch from Graeme Fowler
2472
bc19a55b
PP
2473PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2474 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2475
bd4c9759
NM
2476NM/04 Fixed exiqgrep to cope with mailq missing size issue
2477 Fixes bug 943.
2478
b72aab72
PP
2479PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2480 is logged, to avoid truncation. Patch from John Horne.
2481
2fe76745
PP
2482PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2483 Patch from Jakob Hirsch.
2484
76aa570c
PP
2485PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2486 SQL string expansion failure details.
2487 Patch from Andrey Oktyabrski.
2488
f1e5fef5
PP
2489PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2490 Patch from Simon Arlott.
2491
4d805ee9
PP
2492PP/09 New lookups functionality failed to compile on old gcc which rejects
2493 extern declarations in function scope.
2494 Patch from Oliver Fleischmann
2495
cd59ab18
PP
2496PP/10 Use sig_atomic_t for flags set from signal handlers.
2497 Check getgroups() return and improve debugging.
2498 Fixed developed for diagnosis in bug 927 (which turned out to be
2499 a kernel bug).
2500
332f5cf3
PP
2501PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2502 Patch from Mark Zealey.
2503
29cfeb94
PP
2504PP/12 Bugzilla 1056: Improved spamd server selection.
2505 Patch from Mark Zealey.
2506
660242ad
PP
2507PP/13 Bugzilla 1086: Deal with maildir quota file races.
2508 Based on patch from Heiko Schlittermann.
2509
bc4bc4c5
PP
2510PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2511 Patch from Uwe Doering, sign-off by Michael Haardt.
2512
2e64baa9
NM
2513NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2514 variable declaration deep within a block. Bug and patch from
2515 Dennis Davis.
2516
4c04137d 2517PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2518
6bac1a9a
PP
2519PP/16 Make DISABLE_DKIM build knob functional.
2520
552193f0
NM
2521NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2522 Patch by Simon Arlott
baeee2c1 2523
1b587e48
TF
2524TF/03 Fix valgrind.h portability to C89 compilers that do not support
2525 variable argument macros. Our copy now differs from upstream.
2526
aa097c4c 2527
8c07b69f
TF
2528Exim version 4.74
2529-----------------
2530
2531TF/01 Failure to get a lock on a hints database can have serious
2532 consequences so log it to the panic log.
2533
c0ea85ab
TF
2534TF/02 Log LMTP confirmation messages in the same way as SMTP,
2535 controlled using the smtp_confirmation log selector.
2536
0761d44e
TF
2537TF/03 Include the error message when we fail to unlink a spool file.
2538
0a349494
PP
2539DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2540 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2541 for maintaining out-of-tree patches for some time.
2542
2543PP/01 Bugzilla 139: Documentation and portability issues.
2544 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2545 Handle per-OS dynamic-module compilation flags.
2546
fea24b2e
PP
2547PP/02 Let /dev/null have normal permissions.
2548 The 4.73 fixes were a little too stringent and complained about the
2549 permissions on /dev/null. Exempt it from some checks.
2550 Reported by Andreas M. Kirchwitz.
2551
6545de78
PP
2552PP/03 Report version information for many libraries, including
2553 Exim version information for dynamically loaded libraries. Created
2554 version.h, now support a version extension string for distributors
2555 who patch heavily. Dynamic module ABI change.
2556
1670ef10
PP
2557PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2558 privilege escalation vulnerability whereby the Exim run-time user
2559 can cause root to append content of the attacker's choosing to
2560 arbitrary files.
2561
c0886197
PP
2562PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2563 (Wolfgang Breyha)
2564
b7487bce
PP
2565PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2566 If dropping privileges for untrusted macros, we disabled normal logging
2567 on the basis that it would fail; for the Exim run-time user, this is not
2568 the case, and it resulted in successful deliveries going unlogged.
2569 Fixed. Reported by Andreas Metzler.
2570
8c07b69f 2571
97fd1e48 2572Exim version 4.73
ed7f7860 2573-----------------
97fd1e48
PP
2574
2575PP/01 Date: & Message-Id: revert to normally being appended to a message,
2576 only prepend for the Resent-* case. Fixes regression introduced in
2577 Exim 4.70 by NM/22 for Bugzilla 607.
2578
6901c596
PP
2579PP/02 Include check_rfc2047_length in configure.default because we're seeing
2580 increasing numbers of administrators be bitten by this.
2581
a8c8d6b5
JJ
2582JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2583
77bb000f
PP
2584PP/03 Bugzilla 994: added openssl_options main configuration option.
2585
a29e5231
PP
2586PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2587
ec5a0394 2588PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2589
55c75993
PP
2590PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2591
453a6645 2592PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2593 without a peer certificate, leading to a segfault because of an
2594 assumption that peers always have certificates. Be a little more
453a6645
PP
2595 paranoid. Problem reported by Martin Tscholak.
2596
8544e77a
PP
2597PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2598 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2599 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2600 CL also introduces -bmalware, various -d+acl logging additions and
2601 more caution in buffer sizes.
8544e77a 2602
83e029d5
PP
2603PP/09 Implemented reverse_ip expansion operator.
2604
ed7f7860
PP
2605PP/10 Bugzilla 937: provide a "debug" ACL control.
2606
7d9f747b
PP
2607PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2608
4b2241d2
PP
2609PP/12 Bugzilla 973: Implement --version.
2610
10385c15
PP
2611PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2612
dbc4b90d
PP
2613PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2614
532be449
PP
2615PP/15 Bugzilla 816: support multiple condition rules on Routers.
2616
6a8de854 2617PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2618 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2619 ignore trailing whitespace.
6a8de854 2620
5dc43717
JJ
2621JJ/02 prevent non-panic DKIM error from being sent to paniclog
2622
2623JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2624 "exim" to be used
55c75993 2625
3346ab01
PP
2626PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2627 Notification from Dr Andrew Aitchison.
2628
491fab4c
PP
2629PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2630 ExtendedDetectionInfo response format.
2631 Notification from John Horne.
2632
13eb9497
PP
2633PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2634 compatible.
2635
2636PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2637 XSL and documented dependency on system catalogs, with examples of how
2638 it normally works.
2639
7f36d675
DW
2640DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2641 access.
2642
c1d94452
DW
2643DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2644 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2645 configuration file which is writeable by the Exim user or group.
2646
e2f5dc15
DW
2647DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2648 of configuration files to cover files specified with the -C option if
2649 they are going to be used with root privileges, not just the default
2650 configuration file.
2651
cd25e41d
DW
2652DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2653 option (effectively making it always true).
2654
261dc43e
DW
2655DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2656 files to be used while preserving root privileges.
2657
fa32850b
DW
2658DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2659 that rogue child processes cannot use them.
2660
79d4bc3d
PP
2661PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2662 run-time user, instead of root.
2663
43236f35 2664PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2665 Exim run-time user without dropping privileges.
2666
fb08281f
DW
2667DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2668 result string, instead of calling string_vformat() twice with the same
2669 arguments.
3346ab01 2670
74935b98
DW
2671DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2672 for other users. Others should always drop root privileges if they use
2673 -C on the command line, even for a whitelisted configure file.
2674
90b6341f
DW
2675DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2676
57730b52
ML
2677NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2678
66581d1e 2679
465e92cf
JJ
2680Exim version 4.72
2681-----------------
2682
453a6645
PP
2683JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2684 $data_path, and $header_path variables; fixed documentation bugs and
2685 typos
465e92cf 2686
453a6645
PP
2687JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2688 exipick to access non-standard spools, including the "frozen" queue
2689 (Finput)
edae0343 2690
9bd3e22c
NM
2691NM/01 Bugzilla 965: Support mysql stored procedures.
2692 Patch from Alain Williams
2693
bb576ff7
NM
2694NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2695
5a1a5845
NM
2696NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2697 Patch from Andreas Metzler
2698
981a9fad
NM
2699NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2700 Patch from Kirill Miazine
2701
7fc497ee
NM
2702NM/05 Bugzilla 671: Added umask to procmail example.
2703
1a41defa
JJ
2704JJ/03 installed exipick 20100323.0, fixing doc bug
2705
a466095c 2706NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2707 directory. Notification and patch from Dan Rosenberg.
a466095c 2708
94a6bd0b
NM
2709TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2710
2711TK/02 Improve log output when DKIM signing operation fails.
2712
2713MH/01 Treat the transport option dkim_domain as a colon separated
2714 list, not as a single string, and sign the message with each element,
2715 omitting multiple occurences of the same signer.
2716
c1b141a8
NM
2717NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2718 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2719
b26eacf1 2720NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2721 Patch by Simon Arlott
2722
179c5980 2723PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2724 MBX locking. Notification from Dan Rosenberg.
179c5980 2725
9bd3e22c 2726
7c6d71af
NM
2727Exim version 4.71
2728-----------------
2729
7d9f747b 2730TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2731
f013fb92
NM
2732NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2733
0eb8eedd
NM
2734NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2735
663ee6d9
NM
2736NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2737
177ebd9b
NM
2738NM/04 Bugzilla 915: Flag broken perl installation during build.
2739
7c6d71af 2740
210f147e
NM
2741Exim version 4.70
2742-----------------
2743
cdd3bb85 2744TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2745 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2746
2747TK/02 Write list of recipients to X-Envelope-Sender header when building
2748 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2749 Hirsch).
cdd3bb85
TK
2750
2751TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2752 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2753 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2754
2755TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2756 by Mark Daniel Reidel <mr@df.eu>.
2757
210f147e
NM
2758NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2759 When building exim an external PCRE library is now needed -
2760 PCRE is a system library on the majority of modern systems.
2761 See entry on PCRE_LIBS in EDITME file.
2762
deafd5b3
NM
2763NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2764 conversation. Added nologin parameter to request.
7d9f747b 2765 Patch contributed by Kirill Miazine.
deafd5b3 2766
089793a4
TF
2767TF/01 Do not log submission mode rewrites if they do not change the address.
2768
5f16ca82
TF
2769TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2770
dae9d94e 2771NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2772 log files in place. Contributed by Roberto Lima.
dae9d94e 2773
7d9f747b 2774NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2775
06864c44
TF
2776TF/03 Bugzilla 615: When checking the local_parts router precondition
2777 after a local_part_suffix or local_part_prefix option, Exim now
2778 does not use the address's named list lookup cache, since this
2779 contains cached lookups for the whole local part.
2780
65a7d8c3 2781NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2782 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2783
23510047 2784TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2785
7d9f747b 2786NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2787
7d8eec3a 2788NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2789 Patch provided by Jan Srzednicki.
6c588e74 2790
89dec7b6
TF
2791TF/05 Leading white space used to be stripped from $spam_report which
2792 wrecked the formatting. Now it is preserved.
5f28a6e8 2793
a99de90c
TF
2794TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2795 that they are available at delivery time.
2796
e2803e40
TF
2797TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2798
7199e1ee
TF
2799TF/08 TLS error reporting now respects the incoming_interface and
2800 incoming_port log selectors.
2801
e276e04b
TF
2802TF/09 Produce a more useful error message if an SMTP transport's hosts
2803 setting expands to an empty string.
2804
ce552449 2805NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2806 Patch provided by Phil Pennock.
ce552449 2807
e765a0f1 2808NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2809 Patch provided by Richard Godbee.
e765a0f1 2810
4f054c63 2811NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2812 acl_smtp_notquit, added index entry.
4f054c63 2813
7d9f747b
PP
2814NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2815 Patch provided by Eugene Bujak.
24c929a2 2816
7d9f747b
PP
2817NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2818 accept(). Patch provided by Maxim Dounin.
cf73943b 2819
b52bc06e 2820NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2821 Patch provided by Phil Pennock.
b52bc06e 2822
447de4b0
NM
2823NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2824
4c69d561 2825NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2826 Patch provided by Brad "anomie" Jorsch.
4c69d561 2827
d5c39246 2828NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2829 Patch provided by Dean Brooks.
9b989985 2830
0b23848a
TK
2831TK/05 Add native DKIM support (does not depend on external libraries).
2832
8f3414a1 2833NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2834 Patch provided by Graeme Fowler.
e2aacdfd 2835
fb6f955d
NM
2836NM/16 Bugzilla 851: Documentation example syntax fix.
2837
2838NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2839
7d9f747b
PP
2840NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2841 lsearch.
dbb0bf41 2842
7d9f747b
PP
2843NM/19 Bugzilla 745: TLS version reporting.
2844 Patch provided by Phil Pennock.
f3766eb5 2845
7d9f747b
PP
2846NM/20 Bugzilla 167: bool: condition support.
2847 Patch provided by Phil Pennock.
36f12725 2848
7d9f747b
PP
2849NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2850 clients. Patch provided by Phil Pennock.
e6060e2c 2851
7d9f747b
PP
2852NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2853 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2854
7d9f747b
PP
2855NM/23 Bugzilla 687: Fix misparses in eximstats.
2856 Patch provided by Heiko Schlittermann.
d5c13d66 2857
7d9f747b
PP
2858NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2859 Patch provided by Heiko Schlittermann.
b2335c0b 2860
7d9f747b 2861NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2862 plus update to original patch.
f4cd9433 2863
7d9f747b 2864NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2865
7d9f747b
PP
2866NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2867 Patch provided by David Brownlee.
8dc71ab3 2868
7d9f747b 2869NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2870
7d9f747b 2871NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2872
7d9f747b 2873NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2874
7d9f747b 2875NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2876
17792b53 2877NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2878 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2879
7d9f747b
PP
2880NM/33 Bugzilla 898: Transport filter timeout fix.
2881 Patch by Todd Rinaldo.
52383f8f 2882
91576cec 2883NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2884 Patch by Serge Demonchaux.
5ca6d115 2885
7d9f747b
PP
2886NM/35 Bugzilla 39: Base64 decode bug fixes.
2887 Patch by Jakob Hirsch.
baee9eee 2888
7d9f747b 2889NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2890
7d9f747b 2891NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2892
7d9f747b 2893NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2894
7d9f747b 2895NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2896
deafd5b3 2897
47db1125
NM
2898Exim version 4.69
2899-----------------
2900
4b3504d0
TK
2901TK/01 Add preliminary DKIM support. Currently requires a forked version of
2902 ALT-N's libdkim that I have put here:
2903 http://duncanthrax.net/exim-experimental/
2904
2905 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2906 were called 'true' and it seems that C99 defines that as a reserved
2907 keyword to be used with 'bool' variable types. That means you could
2908 not include C99-style headers which use bools without triggering
2909 build errors in sieve.c.
2910
81ea09ca
NM
2911NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2912 as mailq or other aliases. Changed the --help handling significantly
2913 to do whats expected. exim_usage() emits usage/help information.
2914
f13cddcb
SC
2915SC/01 Added the -bylocaldomain option to eximstats.
2916
7d9f747b 2917NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2918
7d9f747b 2919NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2920
7d9f747b 2921NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2922
2923
eb4c0de6
PH
2924Exim version 4.68
2925-----------------
2926
2927PH/01 Another patch from the Sieve maintainer.
2928
6a3bceb1
PH
2929PH/02 When an IPv6 address is converted to a string for single-key lookup
2930 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2931 dots are used instead of colons so that keys in lsearch files need not
2932 contain colons. This was done some time before quoting was made available
2933 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2934 (notated using the quote facility) so as to distinguish them from IPv4
2935 keys. This meant that lookups for IP addresses in host lists did not work
2936 for iplsearch lookups.
2937
2938 This has been fixed by arranging for IPv6 addresses to be expressed with
2939 colons if the lookup type is iplsearch. This is not incompatible, because
2940 previously such lookups could never work.
2941
4c04137d 2942 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2943 ordinary lsearch keys. However, making the change in all cases is
2944 incompatible and would probably break a number of configurations.
2945
2e30fa9d
TK
2946TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2947 version.
2948
0806a9c5
MH
2949MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2950 conversion specification without a maximum field width, thereby enabling
2951 a rogue spamd server to cause a buffer overflow. While nobody in their
2952 right mind would setup Exim to query an untrusted spamd server, an
2953 attacker that gains access to a server running spamd could potentially
2954 exploit this vulnerability to run arbitrary code as the Exim user.
2955
ae276964
TK
2956TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2957 $primary_hostname instead of what libspf2 thinks the hosts name is.
2958
0f2cbd1b
MH
2959MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2960 a directory entry by the name of the lookup key. Previously, if a
2961 symlink pointed to a non-existing file or a file in a directory that
2962 Exim lacked permissions to read, a lookup for a key matching that
2963 symlink would fail. Now it is enough that a matching directory entry
2964 exists, symlink or not. (Bugzilla 503.)
2965
2b85bce7
PH
2966PH/03 The body_linecount and body_zerocount variables are now exported in the
2967 local_scan API.
2968
93655c46
PH
2969PH/04 Added the $dnslist_matched variable.
2970
6c512171
PH
2971PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2972 This means they are set thereafter only if the connection becomes
2973 encrypted.
2974
2975PH/06 Added the client_condition to authenticators so that some can be skipped
2976 by clients under certain conditions.
2977
aa6dc513
PH
2978PH/07 The error message for a badly-placed control=no_multiline_responses left
2979 "_responses" off the end of the name.
2980
a96603a0
PH
2981PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2982
8f240103
PH
2983PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2984 (without spaces) instead of just copying the configuration text.
2985
2986PH/10 Added the /noupdate option to the ratelimit ACL condition.
2987
d677b2f2
PH
2988PH/11 Added $max_received_linelength.
2989
d52120f2
PH
2990PH/12 Added +ignore_defer and +include_defer to host lists.
2991
64f2600a
PH
2992PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2993 way in which PCRE > 7.0 is built.
2994
8669f003
PH
2995PH/14 Implemented queue_only_load_latch.
2996
a4dc33a8
PH
2997PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2998 MAIL command. The effect was to mangle the value on 64-bit systems.
2999
d6a60c0f
PH
3000PH/16 Another patch from the Sieve maintainer.
3001
8f128379
PH
3002PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
3003
8932dffe
PH
3004PH/18 If a system quota error occurred while trying to create the file for
3005 a maildir delivery, the message "Mailbox is full" was not appended to the
3006 bounce if the delivery eventually timed out. Change 4.67/27 below applied
3007 only to a quota excession during the actual writing of the file.
d6a60c0f 3008
ddea74fa 3009PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
3010 characters?) which causes problems in log lines. The DN values are now
3011 passed through string_printing() before being added to log lines.
3012
ddea74fa 3013PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
3014 and InterBase are left for another time.)
3015
ddea74fa
PH
3016PH/21 Added message_body_newlines option.
3017
ce9f225c
PH
3018PH/22 Guard against possible overflow in moan_check_errorcopy().
3019
19897d52
PH
3020PH/23 POSIX allows open() to be a macro; guard against that.
3021
bc64a74d
PH
3022PH/24 If the recipient of an error message contained an @ in the local part
3023 (suitably quoted, of course), incorrect values were put in $domain and
3024 $local_part during the evaluation of errors_copy.
3025
eb4c0de6 3026
b4ed4da0
PH
3027Exim version 4.67
3028-----------------
3029
22ad45c9
MH
3030MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
3031 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
3032 Jan Srzednicki.
3033
b4ed4da0
PH
3034PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
3035 issue a MAIL command.
3036
431b7361
PH
3037PH/02 In an ACL statement such as
3038
3039 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
3040
3041 if a client was not listed at all, or was listed with a value other than
3042 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
3043 the condition was not true (as it should be), so access was not denied.
3044 The bug was that the ! inversion was incorrectly passed on to the second
3045 item. This has been fixed.
3046
3047PH/03 Added additional dnslists conditions == and =& which are different from
3048 = and & when the dns lookup returns more than one IP address.
3049
83da1223
PH
3050PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
3051 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
3052
54fc8428
PH
3053PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
3054 FSYNC, which compiles an option called disable_fsync that allows for
3055 bypassing fsync(). The documentation is heavily laced with warnings.
3056
34c5e8dd
SC
3057SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
3058
bbe15da8
PH
3059PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
3060 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
3061 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
3062 including adding "make clean"; (3) Added -fPIC when compiling the test
3063 dynamically loaded module, to get rid of a warning.
3064
0e8a9471
MH
3065MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
3066 message fails, move_frozen_messages = true and ignore_bounce_errors_after
3067 = 0s. The bug is otherwise harmless.
3068
f0872424
PH
3069PH/07 There was a bug in the dovecot authenticator such that the value of
3070 $auth1 could be overwritten, and so not correctly preserved, after a
3071 successful authentication. This usually meant that the value preserved by
3072 the server_setid option was incorrect.
3073
b01dd148
PH
3074PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
3075
6bf342e1
PH
3076PH/09 Installed PCRE release 7.0.
3077
273f34d0
PH
3078PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
3079 run for batched SMTP input. It is now run at the start of every message
3080 in the batch. While fixing this I discovered that the process information
3081 (output by running exiwhat) was not always getting set for -bs and -bS
3082 input. This is fixed, and it now also says "batched" for BSMTP.
3083
cf8b11a5
PH
3084PH/11 Added control=no_pipelining.
3085
41c7c167
PH
3086PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
3087 patch, slightly modified), and move the expansion of helo_data till after
3088 the connection is made in the smtp transport (so it can use these
3089 values).
3090
9c57cbc0
PH
3091PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
3092
f3f065bb
PH
3093PH/14 Added log_selector = +pid.
3094
047bdd8c
PH
3095PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
3096
0ce9abe6
PH
3097PH/16 Add ${if forany and ${if forall.
3098
0e22dfd1
PH
3099PH/17 Added dsn_from option to vary the From: line in DSNs.
3100
4c590bd1
PH
3101PH/18 Flush SMTP output before performing a callout, unless control =
3102 no_callout_flush is set.
3103
09945f1e
PH
3104PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
3105 was true (the default) a successful delivery failed to delete the retry
3106 item, thus causing premature timeout of the address. The bug is now
3107 fixed.
3108
c51b8e75
PH
3109PH/20 Added hosts_avoid_pipelining to the smtp transport.
3110
e28326d8 3111PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 3112 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
3113 other ACL rejections are.
3114
75b1493f
PH
3115PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
3116 with slight modification.
3117
7c5214ec
PH
3118PH/23 Applied sieve patches from the maintainer "tracking the latest notify
3119 draft, changing the syntax and factoring some duplicate code".
3120
4311097e
PH
3121PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
3122 for deliveries of the second and subsequent messages over the same SMTP
3123 connection.
3124
29f89cad
PH
3125PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
3126 ${reduce, with only minor "tidies".
3127
5e687460
SC
3128SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
3129
c3611384
PH
3130PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
3131 expansion side effects.
3132
5a11a7b4
PH
3133PH/27 When a message times out after an over-quota error from an Exim-imposed
3134 quota, the bounce message says "mailbox is full". This message was not
3135 being given when it was a system quota that was exceeded. It now should
3136 be the same.
3137
0e20aff9
MH
3138MH/03 Made $recipients available in local_scan(). local_scan() already has
3139 better access to the recipient list through recipients_list[], but
3140 $recipients can be useful in postmaster-provided expansion strings.
3141
ca86f471
PH
3142PH/28 The $smtp_command and $smtp_command_argument variables were not correct
3143 in the case of a MAIL command with additional options following the
3144 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
3145 were accidentally chopped off.
3146
a14e5636
PH
3147PH/29 SMTP synchronization checks are implemented when a command is read -
3148 there is a check that no more input is waiting when there shouldn't be
3149 any. However, for some commands, a delay in an ACL can mean that it is
3150 some time before the response is written. In this time, more input might
3151 arrive, invalidly. So now there are extra checks after an ACL has run for
3152 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
3153 pipelining has not been advertised.
3154
ec95d1a6
PH
3155PH/30 MH's patch to allow iscntrl() characters to be list separators.
3156
42855d71
PH
3157PH/31 Unlike :fail:, a custom message specified with :defer: was not being
3158 returned in the SMTP response when smtp_return_error_details was false.
3159 This has been fixed.
3160
57c2c631
PH
3161PH/32 Change the Dovecot authenticator to use read() and write() on the socket
3162 instead of the C I/O that was originally supplied, because problems were
3163 reported on Solaris.
3164
58c01c94
PH
3165PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
3166 Exim which did not show up earlier: it was assuming that a call to
3167 SSL_CTX_set_info_callback() might give an error value. In fact, there is
3168 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
3169 was a macro that became an assignment, so it seemed to work. This has
3170 changed to a proper function call with a void return, hence the compile
3171 error. Exim's code has been fixed.
3172
dee5a20a
PH
3173PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3174 cpus.
3175
d2ee6114
PH
3176PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3177
b2d5182b
PH
3178PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3179
79749a79
PH
3180PH/37 If a message is not accepted after it has had an id assigned (e.g.
3181 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
3182 "Completed" line in the log. When some messages of this type were
3183 selected by exigrep, they were listed as "not completed". Others were
3184 picked up by some special patterns. I have improved the selection
3185 criteria to be more general.
79749a79 3186
c456d9bb
PH
3187PH/38 The host_find_failed option in the manualroute router can now be set
3188 to "ignore", to completely ignore a host whose IP address cannot be
3189 found. If all hosts are ignored, the behaviour is controlled by the new
3190 host_all_ignored option.
3191
cd9868ec
PH
3192PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3193 homing or because of multiple MX records with /mx) generated more than
3194 one IP address, and the following item turned out to be the local host,
3195 all the secondary addresses of the first item were incorrectly removed
3196 from the list, along with the local host and any following hosts (which
3197 is what is supposed to happen).
3198
ebeaf996
PH
3199PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3200 whoever called Exim into the -H file. In the case of the daemon it was
3201 behaving confusingly. When first started, it used values for whoever
3202 started the daemon, but after a SIGHUP it used the Exim user (because it
3203 calls itself on a restart). I have changed the code so that it now always
3204 uses the Exim user.
3205
2679d413
PH
3206PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3207 message are rejected with the same error (e.g. no authentication or bad
3208 sender address), and a DATA command is nevertheless sent (as can happen
3209 with PIPELINING or a stupid MUA), the error message that was given to the
3210 RCPT commands is included in the rejection of the DATA command. This is
3211 intended to be helpful for MUAs that show only the final error to their
3212 users.
3213
84024b72
PH
3214PH/42 Another patch from the Sieve maintainer.
3215
8005d38e
SC
3216SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3217 Eximstats - Fixed some broken HTML links and added missing column headers
3218 (Jez Hancock).
3219 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3220 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3221
3298c6c6
SC
3222SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3223
a43a27c5
PH
3224PH/43 Yet another patch from the Sieve maintainer.
3225
58eb016e 3226PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
3227 the response to the final '