Taint: fix dsearch result to be untainted
[exim.git] / doc / doc-txt / ChangeLog
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1This document describes *changes* to previous versions, that might
2affect Exim's operation, with an unchanged configuration file. For new
3options, and new features, see the NewStuff file next to this ChangeLog.
495ae4b0 4
4c57a40e 5
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6Exim version 4.94
7-----------------
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8
9JH/01 Avoid costly startup code when not strictly needed. This reduces time
10 for some exim process initialisations. It does mean that the logging
11 of TLS configuration problems is only done for the daemon startup.
12
81344b40
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13JH/02 Early-pipelining support code is now included unless disabled in Makefile.
14
6ce1ece9
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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
f0fe22cb
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23JH/05 Regard command-line receipients as tainted.
24
01446a56
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25JH/06 Bug 340: Remove the daemon pid file on exit, whe due to SIGTERM.
26
dcbfbada
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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
de41aff0
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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
1415d1a6
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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
8aa16eb7
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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
a55697ac
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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
9214d2e4 96 Previously this was permitted.
0d2e392e 97
7a66b3af
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98JH/21 Bug 2501: Fix init call in the heimdal authenticator. Previously it
99 adjusted the size of a major service buffer; this failed because the
100 buffer was in use at the time. Change to a compile-time increase in the
101 buffer size, when this authenticator is compiled into exim.
102
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103JH/22 Taint-checking: move to safe-mode taint checking on all platforms. The
104 previous fast-mode was untenable in the face of glibs using mmap to
105 support larger malloc requests.
36eb5d3d 106
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107PP/01 Update the openssl_options possible values through OpenSSL 1.1.1c.
108 New values supported, if defined on system where compiled:
109 allow_no_dhe_kex, cryptopro_tlsext_bug, enable_middlebox_compat,
110 no_anti_replay, no_encrypt_then_mac, prioritize_chacha, tlsext_padding
111
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112JH/23 Performance improvement in the initial phase of a two-pass queue run. By
113 running a limited number of proceses in parallel, a benefit is gained. The
114 amount varies with the platform hardware and load. The use of the option
115 queue_run_in_order means we cannot do this, as ordering becomes
116 indeterminate.
117
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118JH/24 Bug 2524: fix the cyrus_sasl auth driver gssapi usage. A previous fix
119 had introduced a string-copy (for ensuring NUL-termination) which was not
120 appropriate for that case, which can include embedded NUL bytes in the
121 block of data. Investigation showed the copy to actually be needless, the
122 data being length-specified.
123
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124JH/25 Fix use of concurrent TLS connections under GnuTLS. When a callout was
125 done during a receiving connection, and both used TLS, global info was
126 used rather than per-connection info for tracking the state of data
127 queued for transmission. This could result in a connection hang.
128
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129JH/26 Fix use of the SIZE parameter on MAIL commands, on continued connections.
130 Previously, when delivering serveral messages down a single connection
131 only the first would provide a SIZE. This was due to the size information
132 not being properly tracked.
133
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134JH/27 Bug 2530: When operating in a timezone with sub-minute offset, such as
135 TAI (at 37 seconds currently), pretend to be in UTC for time-related
136 expansion and logging. Previously, spurious values such as a future
137 minute could be seen.
138
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139JH/28 Bug 2533: Fix expansion of ${tr } item. When called in some situations
140 it could crash from a null-deref. This could also affect the
141 ${addresses: } operator and ${readsock } item.
142
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143JH/29 Bug 2537: Fix $mime_part_count. When a single connection had a non-mime
144 message following a mime one, the variable was not reset.
145
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146JH/30 When an pipelined-connect fails at the first response, assume incorrect
147 cached capability (perhaps the peer reneged?) and immediately retry in
148 non-pipelined mode.
149
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150JH/31 Fix spurious detection of timeout while writing to transport filter.
151
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152JH/32 Bug 2541: Fix segfault on bad cmdline -f (sender) argument. Previously
153 an attempt to copy the string was made before checking it.
154
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155JH/33 Fix the dsearch lookup to return an untainted result. Previously the
156 taint of the lookup key was maintained; we now regard the presence in the
157 filesystem as sufficient validation.
158
d85cdeb5 159
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160Exim version 4.93
161-----------------
162
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163JH/01 OpenSSL: With debug enabled output keying information sufficient, server
164 side, to decode a TLS 1.3 packet capture.
40ed89b3 165
fc243e94 166JH/02 OpenSSL: Suppress the sending of (stateful) TLS1.3 session tickets.
d7f31bb6
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167 Previously the default library behaviour applied, sending two, each in
168 its own TCP segment.
169
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170JH/03 Debug output for ACL now gives the config file name and line number for
171 each verb.
172
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173JH/04 The default received_header_text now uses the RFC 8314 tls cipher clause.
174
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175JH/05 DKIM: ensure that dkim_domain elements are lowercased before use.
176
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177JH/06 Fix buggy handling of autoreply bounce_return_size_limit, and a possible
178 buffer overrun for (non-chunking) other transports.
179
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180JH/07 GnuTLS: Our use of late (post-handshake) certificate verification, under
181 TLS1.3, means that a server rejecting a client certificate is not visible
182 to the client until the first read of encrypted data (typically the
183 response to EHLO). Add detection for that case and treat it as a failed
184 TLS connection attempt, so that the normal retry-in-clear can work (if
185 suitably configured).
186
c05bdbd6 187JB/01 Bug 2375: fix expansions of 822 addresses having comments in local-part
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188 and/or domain. Found and fixed by Jason Betts.
189
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190JH/08 Add hardening against SRV & TLSA lookups the hit CNAMEs (a nonvalid
191 configuration). If a CNAME target was not a wellformed name pattern, a
192 crash could result.
193
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194JH/09 Logging: Fix initial listening-on line for multiple ports for an IP when
195 the OS reports them interleaved with other addresses.
196
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197JH/10 OpenSSL: Fix aggregation of messages. Previously, when PIPELINING was
198 used both for input and for a verify callout, both encrypted, SMTP
199 responses being sent by the server could be lost. This resulted in
200 dropped connections and sometimes bounces generated by a peer sending
201 to this system.
254f38d1 202
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203JH/11 Harden plaintext authenticator against a badly misconfigured client-send
204 string. Previously it was possible to cause undefined behaviour in a
205 library routine (usually a crash). Found by "zerons".
206
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207JH/12 Bug 2384: fix "-bP smtp_receive_timeout". Previously it returned no
208 output.
209
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210JH/13 Bug 2386: Fix builds with Dane under LibreSSL 2.9.0 onward. Some old
211 API was removed, so update to use the newer ones.
212
3c55eef2 213JH/14 Bug 1891: Close the log file if receiving a non-smtp message, without
00c0dd4e 214 any timeout set, is taking a long time. Previously we would hang on to a
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215 rotated logfile "forever" if the input was arriving with long gaps
216 (a previous attempt to fix addressed lack, for a long time, of initial
217 input).
218
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219HS/01 Bug 2390: Use message_id for tempfile creation to avoid races in a
220 shared (NFS) environment. The length of the tempfile name is now
221 4 + 16 ("hdr.$message_exim_id") which might break on file
222 systems which restrict the file name length to lower values.
223 (It was "hdr.$pid".)
224
7d8d08c4 225HS/02 Bug 2390: Use message_id for tempfile creation to avoid races in a
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226 shared (NFS) environment.
227
7d8d08c4 228HS/03 Bug 2392: exigrep does case sensitive *option* processing (as it
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229 did for all versions <4.90). Notably -M, -m, --invert, -I may be
230 affected.
231
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232JH/15 Use unsigned when creating bitmasks in macros, to avoid build errors
233 on some platforms for bit 31.
234
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235JH/16 GnuTLS: rework ciphersuite strings under recent library versions. Thanks
236 to changes apparently associated with TLS1.3 handling some of the APIs
237 previously used were either nonfunctional or inappropriate. Strings
238 like TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM__AEAD:256
239 and TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_128_CBC__SHA256:128 replace
240 the previous TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 .
241 This affects log line X= elements, the $tls_{in,out}_cipher variables,
242 and the use of specific cipher names in the encrypted= ACL condition.
243
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244JH/17 OpenSSL: the default openssl_options now disables ssl_v3.
245
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246JH/18 GnuTLS: fix $tls_out_ocsp under hosts_request_ocsp. Previously the
247 verification result was not updated unless hosts_require_ocsp applied.
248
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249JH/19 Bug 2398: fix listing of a named-queue. Previously, even with the option
250 queue_list_requires_admin set to false, non-admin users were denied the
251 facility.
252
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253JH/20 Bug 2389: fix server advertising of usable certificates, under GnuTLS in
254 directory-of-certs mode. Previously they were advertised despite the
255 documentation.
256
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257JH/21 The smtp transport option "hosts_noproxy_tls" is now unset by default.
258 A single TCP connection by a client will now hold a TLS connection open
259 for multiple message deliveries, by default. Previoud the default was to
260 not do so.
261
59c0959a 262JH/22 The smtp transport option "hosts_try_dane" now enables all hosts by
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263 default. If built with the facility, DANE will be used. The facility
264 SUPPORT_DANE is now enabled in the prototype build Makefile "EDITME".
265
266JH/23 The build default is now for TLS to be included; the SUPPORT_TLS define
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267 is replaced with DISABLE_TLS. Either USE_GNUTLS or (the new) USE_OPENSSL
268 must be defined and you must still, unless you define DISABLE_TLS, manage
269 the the include-dir and library-file requirements that go with that
270 choice. Non-TLS builds are still supported.
59c0959a 271
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272JH/24 Fix duplicated logging of peer name/address, on a transport connection-
273 reject under TFO.
96eb7d2a 274
efad2f41 275JH/25 The smtp transport option "hosts_try_fastopen" now enables all hosts by
4e48d56c 276 default. If the platform supports and has the facility enabled, it will
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277 be requested on all coneections.
278
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279JH/26 The PIPE_CONNECT facility is promoted from experimental status and is now
280 controlled by the build-time option SUPPORT_PIPE_CONNECT.
281
6ee11061 282PP/01 Unbreak heimdal_gssapi, broken in 4.92.
0a5441fc 283
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284JH/27 Bug 2404: Use the main-section configuration option "dsn_from" for
285 success-DSN messages. Previously the From: header was always the default
286 one for these; the option was ignored.
6ee11061 287
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288JH/28 Fix the timeout on smtp response to apply to the whole response.
289 Previously it was reset for every read, so a teergrubing peer sending
290 single bytes within the time limit could extend the connection for a
291 long time. Credit to Qualsys Security Advisory Team for the discovery.
292
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293JH/29 Fix DSN Final-Recipient: field. Previously it was the post-routing
294 delivery address, which leaked information of the results of local
295 forwarding. Change to the original envelope recipient address, per
296 standards.
297
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298JH/30 Bug 2411: Fix DSN generation when RFC 3461 failure notification is
299 requested. Previously not bounce was generated and a log entry of
300 error ignored was made.
301
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302JH/31 Avoid re-expansion in ${sort } expansion. (CVE-2019-13917)
303
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304JH/32 Introduce a general tainting mechanism for values read from the input
305 channel, and values derived from them. Refuse to expand any tainted
306 values, to catch one form of exploit.
307
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308JH/33 Bug 2413: Fix dkim_strict option. Previously the expansion result
309 was unused and the unexpanded text used for the test. Found and
310 fixed by Ruben Jenster.
311
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312JH/34 Fix crash after TLS shutdown. When the TCP/SMTP channel was left open,
313 an attempt to use a TLS library read routine dereffed a nul pointer,
314 causing a segfault.
315
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316JH/35 Bug 2409: filter out-of-spec chars from callout response before using
317 them in our smtp response.
318
9c6881f8 319JH/36 Have the general router option retry_use_local_part default to true when
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320 any of the restrictive preconditions are set (to anything). Previously it
321 was only for check_local user. The change removes one item of manual
322 configuration which is required for proper retries when a remote router
323 handles a subset of addresses for a domain.
324
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325JH/37 Appendfile: when evaluating quota use (non-quota_size_regex) take the file
326 link count into consideration.
327
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328HS/04 Fix handling of very log lines in -H files. If a -<key> <value> line
329 caused the extension of big_buffer, the following lines were ignored.
330
331JH/38 Bug 1395: Teach the DNS negative-cache about TTL value from the SOA in
332 accordance with RFC 2308. Previously there was no expiry, so a longlived
333 receive process (eg. due to ACL delays) versus a short SOA value could
334 surprise.
335
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336HS/05 Handle trailing backslash gracefully. (CVE-2019-15846)
337
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338JH/39 Promote DMARC support to mainline.
339
d6c829b9
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340JH/40 Bug 2452: Add a References: header to DSNs.
341
49132a3b
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342JH/41 With GnuTLS 3.6.0 (and later) do not attempt to manage Diffie-Hellman
343 parameters. The relevant library call is documented as "Deprecated: This
344 function is unnecessary and discouraged on GnuTLS 3.6.0 or later. Since
345 3.6.0, DH parameters are negotiated following RFC7919."
346
ab0e957b 347HS/06 Change the default of dnssec_request_domains to "*"
40ed89b3 348
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349JH/42 Bug 2545: Fix CHUNKING for all RCPT commands rejected. Previously we
350 carried on and emitted a BDAT command, even when PIPELINING was not
351 active.
352
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353JH/43 Bug 2465: Fix taint-handling in dsearch lookup. Previously a nontainted
354 buffer was used for the filename, resulting in a trap when tainted
355 arguments (eg. $domain) were used.
356
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357JH/44 With OpenSSL 1.1.1 (onwards) disable renegotiation for TLS1.2 and below;
358 recommended to avoid a possible server-load attack. The feature can be
359 re-enabled via the openssl_options main cofiguration option.
360
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361JH/45 local_scan API: documented the current smtp_printf() call. This changed
362 for version 4.90 - adding a "more data" boolean to the arguments.
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363 Bumped the ABI version number also, this having been missed previously;
364 release versions 4.90 to 4.92.3 inclusive were effectively broken in
365 respect of usage of smtp_printf() by either local_scan code or libraries
366 accessed via the ${dlfunc } expansion item. Both will need coding
367 adjustment for any calls to smtp_printf() to match the new function
368 signature; a FALSE value for the new argument is always safe.
b2d54f83 369
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370JH/46 FreeBSD: fix use of the sendfile() syscall. The shim was not updating
371 the file-offset (which the Linux syscall does, and exim expects); this
372 resulted in an indefinite loop.
373
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374JH/47 ARC: fix crash in signing, triggered when a configuration error failed
375 to do ARC verification. The Authentication-Results: header line added
376 by the configuration then had no ARC item.
377
c5040dfd 378
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379Exim version 4.92
380-----------------
381
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382JH/01 Remove code calling the customisable local_scan function, unless a new
383 definition "HAVE_LOCAL_SCAN=yes" is present in the Local/Makefile.
384
385JH/02 Bug 1007: Avoid doing logging from signal-handlers, as that can result in
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386 non-signal-safe functions being used.
387
388JH/03 Bug 2269: When presented with a received message having a stupidly large
389 number of DKIM-Signature headers, disable DKIM verification to avoid
390 a resource-consumption attack. The limit is set at twenty.
9723f966 391
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392JH/04 Add variables $arc_domains, $arc_oldest_pass for ARC verify. Fix the
393 report of oldest_pass in ${authres } in consequence, and separate out
394 some descriptions of reasons for verification fail.
395
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396JH/05 Bug 2273: Cutthrough delivery left a window where the received messsage
397 files in the spool were present and unlocked. A queue-runner could spot
398 them, resulting in a duplicate delivery. Fix that by doing the unlock
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399 after the unlink. Investigation by Tim Stewart. Take the opportunity to
400 add more error-checking on spoolfile handling while that code is being
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401 messed with.
402
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403PP/01 Refuse to open a spool data file (*-D) if it's a symlink.
404 No known attacks, no CVE, this is defensive hardening.
405
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406JH/06 Bug 2275: The MIME ACL unlocked the received message files early, and
407 a queue-runner could start a delivery while other operations were ongoing.
408 Cutthrough delivery was a common victim, resulting in duplicate delivery.
409 Found and investigated by Tim Stewart. Fix by using the open message data
410 file handle rather than opening another, and not locally closing it (which
411 releases a lock) for that case, while creating the temporary .eml format
412 file for the MIME ACL. Also applies to "regex" and "spam" ACL conditions.
413
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414JH/07 Bug 177: Make a random-recipient callout success visible in ACL, by setting
415 $sender_verify_failure/$recipient_verify_failure to "random".
416
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417JH/08 When generating a selfsigned cert, use serial number 1 since zero is not
418 legitimate.
419
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420JH/09 Bug 2274: Fix logging of cmdline args when starting in an unlinked cwd.
421 Previously this would segfault.
422
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423JH/10 Fix ARC signing for case when DKIM signing failed. Previously this would
424 segfault.
425
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426JH/11 Bug 2264: Exim now only follows CNAME chains one step by default. We'd
427 like zero, since the resolver should be doing this for us, But we need one
428 as a CNAME but no MX presence gets the CNAME returned; we need to check
429 that doesn't point to an MX to declare it "no MX returned" rather than
430 "error, loop". A new main option is added so the older capability of
431 following some limited number of chain links is maintained.
432
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433JH/12 Add client-ip info to non-pass iprev ${authres } lines.
434
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435JH/13 For receent Openssl versions (1.1 onward) use modern generic protocol
436 methods. These should support TLS 1.3; they arrived with TLS 1.3 and the
437 now-deprecated earlier definitions used only specified the range up to TLS
438 1.2 (in the older-version library docs).
439
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440JH/14 Bug 2284: Fix DKIM signing for body lines starting with a pair of dots.
441
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442JH/15 Rework TLS client-side context management. Stop using a global, and
443 explicitly pass a context around. This enables future use of TLS for
444 connections to service-daemons (eg. malware scanning) while a client smtp
445 connection is using TLS; with cutthrough connections this is quite likely.
446
5054c4fd 447JH/16 Fix ARC verification to do AS checks in reverse order.
611b1961
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448
449JH/17 Support a "tls" option on the ${readsocket } expansion item.
5054c4fd 450
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451JH/18 Bug 2287: Fix the protocol name (eg utf8esmtp) for multiple messages
452 using the SMTPUTF8 option on their MAIL FROM commands, in one connection.
453 Previously the "utf8" would be re-prepended for every additional message.
454
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455JH/19 Reject MAIL FROM commands with SMTPUTF8 when the facility was not advertised.
456 Previously thery were accepted, resulting in issues when attempting to
457 forward messages to a non-supporting MTA.
458
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459PP/02 Let -n work with printing macros too, not just options.
460
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461JH/20 Bug 2296: Fix cutthrough for >1 address redirection. Previously only
462 one parent address was copied, and bogus data was used at delivery-logging
463 time. Either a crash (after delivery) or bogus log data could result.
464 Discovery and analysis by Tim Stewart.
465
0a682b6c
PP
466PP/03 Make ${utf8clean:} expansion operator detect incomplete final character.
467 Previously if the string ended mid-character, we did not insert the
468 promised '?' replacement.
469
c2c451ac
PP
470PP/04 Documentation: current string operators work on bytes, not codepoints.
471
8768d548
JH
472JH/21 Change as many as possible of the global flags into one-bit bitfields; these
473 should pack well giving a smaller memory footprint so better caching and
474 therefore performance. Group the declarations where this can't be done so
475 that the byte-sized flag variables are not interspersed among pointer
476 variables, giving a better chance of good packing by the compiler.
477
5455f548
JH
478JH/22 Bug 1896: Fix the envelope from for DMARC forensic reports to be possibly
479 non-null, to avoid issues with sites running BATV. Previously reports were
480 sent with an empty envelope sender so looked like bounces.
481
25beaee4
MK
482JH/23 Bug 2318: Fix the noerror command within filters. It wasn't working.
483 The ignore_error flag wasn't being returned from the filter subprocess so
484 was not set for later routers. Investigation and fix by Matthias Kurz.
485
7ea1237c 486JH/24 Bug 2310: Raise a msg:fail:internal event for each undelivered recipient,
570cb1bd 487 and a msg:complete for the whole, when a message is manually removed using
7ea1237c
MK
488 -Mrm. Developement by Matthias Kurz, hacked on by JH.
489
ebda598a
JH
490JH/25 Avoid fixed-size buffers for pathnames in DB access. This required using
491 a "Gnu special" function, asprintf() in the DB utility binary builds; I
492 hope that is portable enough.
493
570cb1bd
JH
494JH/26 Bug 2311: Fix DANE-TA verification under GnuTLS. Previously it was also
495 requiring a known-CA anchor certificate; make it now rely entirely on the
496 TLSA as an anchor. Checking the name on the leaf cert against the name
497 on the A-record for the host is still done for TA (but not for EE mode).
498
eb58ddf5
JH
499JH/27 Fix logging of proxy address. Previously, a pointless "PRX=[]:0" would be
500 included in delivery lines for non-proxied connections, when compiled with
501 SUPPORT_SOCKS and running with proxy logging enabled.
502
ffbc20ed
MK
503JH/28 Bug 2314: Fire msg:fail:delivery event even when error is being ignored.
504 Developement by Matthias Kurz, tweaked by JH. While in that bit of code,
505 move the existing event to fire before the normal logging of message
506 failure so that custom logging is bracketed by normal logging.
507
4e928780
MK
508JH/29 Bug 2322: A "fail" command in a non-system filter (file) now fires the
509 msg:fail:internal event. Developement by Matthias Kurz.
510
75c121f0 511JH/30 Bug 2329: Increase buffer size used for dns lookup from 2k, which was
059f2ace 512 far too small for todays use of crypto signatures stored there. Go all
75c121f0
JH
513 the way to the max DNS message size of 64kB, even though this might be
514 overmuch for IOT constrained device use.
515
e30f4f43
JH
516JH/31 Fix a bad use of a copy function, which could be used to pointlessly
517 copy a string over itself. The library routine is documented as not
518 supporting overlapping copies, and on MacOS it actually raised a SIGABRT.
519
a45431fa
JH
520JH/32 For main options check_spool_space and check_inode_space, where the
521 platform supports 64b integers, support more than the previous 2^31 kB
522 (i.e. more than 2 TB). Accept E, P and T multipliers in addition to
523 the previous G, M, k.
524
c0fb53b7
JH
525JH/33 Bug 2338: Fix the cyrus-sasl authenticator to fill in the
526 $authenticated_fail_id variable on authentication failure. Previously
527 it was unset.
528
6aac3239
JH
529JH/34 Increase RSA keysize of autogen selfsign cert from 1024 to 2048. RHEL 8.0
530 OpenSSL didn't want to use such a weak key. Do for GnuTLS also, and for
531 more-modern GnuTLS move from GNUTLS_SEC_PARAM_LOW to
532 GNUTLS_SEC_PARAM_MEDIUM.
533
5a2a0989
JH
534JH/35 OpenSSL: fail the handshake when SNI processing hits a problem, server
535 side. Previously we would continue as if no SNI had been received.
536
de6f74f2 537JH/36 Harden the handling of string-lists. When a list consisted of a sole
b72f857f
JH
538 "<" character, which should be a list-separator specification, we walked
539 off past the nul-terimation.
540
de6f74f2
JH
541JH/37 Bug 2341: Send "message delayed" warning MDNs (restricted to external
542 causes) even when the retry time is not yet met. Previously they were
543 not, meaning that when (say) an account was over-quota and temp-rejecting,
544 and multiple senders' messages were queued, only one sender would get
545 notified on each configured delay_warning cycle.
546
aa6e77af 547JH/38 Bug 2351: Log failures to extract envelope addresses from message headers.
aaf3e414 548
25fa0868
JH
549JH/39 OpenSSL: clear the error stack after an SSL_accept(). With anon-auth
550 cipher-suites, an error can be left on the stack even for a succeeding
551 accept; this results in impossible error messages when a later operation
552 actually does fail.
553
cb6bd80f
JH
554AM/01 Bug 2359: GnuTLS: repeat lowlevel read and write operations while they
555 return error codes indicating retry. Under TLS1.3 this becomes required.
556
557JH/40 Fix the feature-cache refresh for EXPERIMENTAL_PIPE_CONNECT. Previously
558 it only wrote the new authenticators, resulting in a lack of tracking of
559 peer changes of ESMTP extensions until the next cache flush.
518b70e9 560
56ac062a
JH
561JH/41 Fix the loop reading a message header line to check for integer overflow,
562 and more-often against header_maxsize. Previously a crafted message could
563 induce a crash of the recive process; now the message is cleanly rejected.
564
ae63862b
MA
565JH/42 Bug 2366: Fix the behaviour of the dkim_verify_signers option. It had
566 been totally disabled for all of 4.91. Discovery and fix by "Mad Alex".
567
9723f966 568
bb264f6b
JH
569Exim version 4.91
570-----------------
459fca58 571
c39c8870 572GF/01 DEFER rather than ERROR on redis cluster MOVED response.
bb264f6b
JH
573 When redis_servers is set to a list of > 1 element, and the Redis servers
574 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
575 case of MOVED into a DEFER case instead, thus moving the query onto the
576 next server in the list. For a cluster of N elements, all N servers must
577 be defined in redis_servers.
c39c8870 578
0800ef83
GF
579GF/02 Catch and remove uninitialized value warning in exiqsumm
580 Check for existence of @ARGV before looking at $ARGV[0]
581
459fca58
JH
582JH/01 Replace the store_release() internal interface with store_newblock(),
583 which internalises the check required to safely use the old one, plus
584 the allocate and data copy operations duplicated in both (!) of the
585 extant use locations.
586
944e8b37
JH
587JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
588 modifier. This matches the restriction on the commandline.
589
bbfb5dcd
JH
590JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
591 Previously only the last row was returned.
592
a05d3e34
JH
593JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
594 we assumed that tags in the header were well-formed, and parsed the
595 element content after inspecting only the first char of the tag.
596 Assumptions at that stage could crash the receive process on malformed
597 input.
598
ce93c6d8
JH
599JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
600 While running the DKIM ACL we operate on the Permanent memory pool so that
601 variables created with "set" persist to the DATA ACL. Also (at any time)
602 DNS lookups that fail create cache records using the Permanent pool. But
603 expansions release any allocations made on the current pool - so a dnsdb
604 lookup expansion done in the DKIM ACL releases the memory used for the
605 DNS negative-cache, and bad things result. Solution is to switch to the
606 Main pool for expansions.
607 While we're in that code, add checks on the DNS cache during store_reset,
608 active in the testsuite.
609 Problem spotted, and debugging aided, by Wolfgang Breyha.
610
2577f55f
JH
611JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
612 When none of the hosts presented to a transport match an already-open
613 connection, close it and proceed with the list. Previously we would
614 queue the message. Spotted by Lena with Yahoo, probably involving
615 round-robin DNS.
616
5b6f7658
JH
617JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
618 Previously a spurious "250 OK id=" response was appended to the proper
619 failure response.
620
c11d665d
JH
621JH/08 The "support for" informational output now, which built with Content
622 Scanning support, has a line for the malware scanner interfaces compiled
623 in. Interface can be individually included or not at build time.
e5ba8aa7
JH
624
625JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
626 by the template makefile "src/EDITME". The "STREAM" support for an older
627 ClamAV interface method is removed.
c11d665d 628
ba0e37b1
JH
629JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
630 rows affected is given instead).
631
96508de1
JH
632JH/11 The runtime Berkeley DB library version is now additionally output by
633 "exim -d -bV". Previously only the compile-time version was shown.
634
06fdb9f7
JH
635JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
636 SMTP connection. Previously, when one had more receipients than the
637 first, an abortive onward connection was made. Move to full support for
638 multiple onward connections in sequence, handling cutthrough connection
639 for all multi-message initiating connections.
640
f83a760f
JH
641JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
642 routers. Previously, a multi-recipient message would fail to match the
643 onward-connection opened for the first recipient, and cause its closure.
644
f1fed05b
JH
645JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
646 a timeout on read on a GnuTLS initiating connection, resulting in the
647 initiating connection being dropped. This mattered most when the callout
648 was marked defer_ok. Fix to keep the two timeout-detection methods
649 separate.
650
051d5efa
JH
651JH/15 Relax results from ACL control request to enable cutthrough, in
652 unsupported situations, from error to silently (except under debug)
653 ignoring. This covers use with PRDR, frozen messages, queue-only and
654 fake-reject.
655
cf3cd306
HSHR
656HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
657
744976d4
JH
658JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
659 metadata, resulting in a crash in free().
660
aab9a843 661PP/01 Fix broken Heimdal GSSAPI authenticator integration.
7be14582 662 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
aab9a843 663 Broken also in d185889f4, with init system revamp.
7be14582 664
83d2a861
JH
665JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
666 Previously we abruptly closed the connection after reading a malware-
667 found indication; now we go on to read the "scan ok" response line,
668 and send a quit.
669
6741531c
JH
670JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
671 ACL. Previously, a crash would result.
672
85e03244
JH
673JH/19 Speed up macro lookups during configuration file read, by skipping non-
674 macro text after a replacement (previously it was only once per line) and
675 by skipping builtin macros when searching for an uppercase lead character.
676
c0635b6d
JH
677JH/20 DANE support moved from Experimental to mainline. The Makefile control
678 for the build is renamed.
679
b808677c
JH
680JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
681 was allocated for every new TLS startup, meaning one per message. Fix
682 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
683
6678c382
JH
684JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
685 reported the original. Fix to report (as far as possible) the ACL
686 result replacing the original.
687
dec766a1
WB
688JH/23 Fix memory leak during multi-message connections using STARTTLS under
689 OpenSSL. Certificate information is loaded for every new TLS startup,
690 and the resources needed to be freed.
691
15ae19f9
JH
692JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
693
e6532c4a
JH
694JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
695 was not propagated.
696
2556b3c6
SA
697JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
698 DATA response info to the (existing) per-recipient response info for
699 the "C=" log element. It can have useful tracking info from the
700 destination system. Patch from Simon Arlott.
701
fc8cd529
JH
702JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
703 length value. Previously this would segfault.
704
71bb51e0
HSHR
705HS/02 Support Avast multiline protoocol, this allows passing flags to
706 newer versions of the scanner.
707
e04bfa34
JH
708JH/28 Ensure that variables possibly set during message acceptance are marked
709 dead before release of memory in the daemon loop. This stops complaints
710 about them when the debug_store option is enabled. Discovered specifically
711 for sender_rate_period, but applies to a whole set of variables.
c232fc99
JH
712 Do the same for the queue-runner and queue-list loops, for variables set
713 from spool message files. Do the same for the SMTP per-message loop, for
714 certain variables indirectly set in ACL operations.
e04bfa34 715
ecce6d9a
JH
716JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
717 as a multi-recipient message from a mailinglist manager). The coding had
718 an arbitrary cutoff number of characters while checking for more input;
719 enforced by writing a NUL into the buffer. This corrupted long / fast
720 input. The problem was exposed more widely when more pipelineing of SMTP
721 responses was introduced, and one Exim system was feeding another.
722 The symptom is log complaints of SMTP syntax error (NUL chars) on the
723 receiving system, and refused recipients seen by the sending system
724 (propating to people being dropped from mailing lists).
725 Discovered and pinpointed by David Carter.
726
c9cf9ac4
JH
727JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
728 replaced by the ${authresults } expansion.
729
b3b37076
JH
730JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
731
830832c9
HSHR
732HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
733 allows proper process termination in container environments.
734
f64e8b5f
JH
735JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
736 Previously the "final dot" had a newline after it; ensure it is CR,LF.
737
8f0776b5
JH
738JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
739 and "err_perm", deprecated since 4.83 when the RFC-defined words
740 "temperror" and "permerror" were introduced.
741
857eaf37
JH
742JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
743 transport-filters or DKIM-signing. The restriction was lost in the
744 consolidation of verify-callout and delivery SMTP handling.
5add7dc4 745 Extend the restriction to also cover ARC-signing.
857eaf37 746
c85476e9
JH
747JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
748 in defer=pass mode supply a 450 to the initiator. Previously the message
749 would be spooled.
750
405074ad
PP
751PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
752 tls_require_ciphers is used as before.
753
eb445b04
HSHR
754HS/03 Malware Avast: Better match the Avast multiline protocol. Add
755 "pass_unscanned". Only tmpfails from the scanner are written to
756 the paniclog, as they may require admin intervention (permission
757 denied, license issues). Other scanner errors (like decompression
758 bombs) do not cause a paniclog entry.
ad93c40f 759
d342446f
JH
760JH/36 Fix reinitialisation of DKIM logging variable between messages.
761 Previously it was possible to log spurious information in receive log
762 lines.
763
a28050f8
JH
764JH/37 Bug 2255: Revert the disable of the OpenSSL session caching. This
765 triggered odd behaviour from Outlook Express clients.
766
ddd16464
PP
767PP/03 Add util/renew-opendmarc-tlds.sh script for safe renewal of public
768 suffix list.
769
321ef002
JH
770JH/38 DKIM: accept Ed25519 pubkeys in SubjectPublicKeyInfo-wrapped form,
771 since the IETF WG has not yet settled on that versus the original
772 "bare" representation.
773
3203e7ba
JH
774JH/39 Fix syslog logging for syslog_timestamp=no and log_selector +millisec.
775 Previously the millisecond value corrupted the output.
776 Fix also for syslog_pid=no and log_selector +pid, for which the pid
777 corrupted the output.
778
bbfb5dcd 779
acfc18c3
PP
780Exim version 4.90
781-----------------
782
783JH/01 Rework error string handling in TLS interface so that the caller in
784 more cases is responsible for logging. This permits library-sourced
785 string to be attached to addresses during delivery, and collapses
786 pairs of long lines into single ones.
787
856d1e16
PP
788PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
789 during configuration. Wildcards are allowed and expanded.
790
b9df1829
JH
791JH/02 Rework error string handling in DKIM to pass more info back to callers.
792 This permits better logging.
793
875512a3
JH
794JH/03 Rework the transport continued-connection mechanism: when TLS is active,
795 do not close it down and have the child transport start it up again on
796 the passed-on TCP connection. Instead, proxy the child (and any
797 subsequent ones) for TLS via a unix-domain socket channel. Logging is
798 affected: the continued delivery log lines do not have any DNSSEC, TLS
5013d912 799 Certificate or OCSP information. TLS cipher information is still logged.
875512a3 800
fc3f96af
JH
801JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
802 identical IP addresses on different listening ports. Will also affect
803 "exiwhat" output.
804
98913c8e
BK
805PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
806 add noisy ifdef guards to special-case this sillyness.
807 Patch from Bernd Kuhls.
808
8d909960
JH
809JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
810 than 255 are no longer allowed.
811
7006ee24
JH
812JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
813 Disable the session-cache too, which might reduce our load. Since we
814 currrectly use a new context for every connection, both as server and
815 client, there is no benefit for these.
816 GnuTLS appears to not support tickets server-side by default (we don't
817 call gnutls_session_ticket_enable_server()) but client side is enabled
818 by default on recent versions (3.1.3 +) unless the PFS priority string
819 is used (3.2.4 +).
820
6e411084
PP
821PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
822 <https://reproducible-builds.org/specs/source-date-epoch/>.
823
4c2471ca
JH
824JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
825 the check for any unsuccessful recipients did not notice the limit, and
826 erroneously found still-pending ones.
827
4e910c01
JH
828JH/08 Pipeline CHUNKING command and data together, on kernels that support
829 MSG_MORE. Only in-clear (not on TLS connections).
830
42055a33
JH
831JH/09 Avoid using a temporary file during transport using dkim. Unless a
832 transport-filter is involved we can buffer the headers in memory for
833 creating the signature, and read the spool data file once for the
834 signature and again for transmission.
835
eeb35890
JH
836JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
837 4.77 as the kernel support then wasn't solid, having issues in 64bit
7d758a6a 838 mode. Now, it's been long enough. Add support for FreeBSD also.
eeb35890 839
b7d3afcf
JH
840JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
841 case where the routing stage had gathered several addresses to send to
842 a host before calling the transport for the first, we previously failed
843 to close down TLS in the old transport process before passing the TCP
844 connection to the new process. The new one sent a STARTTLS command
845 which naturally failed, giving a failed delivery and bloating the retry
846 database. Investigation and fix prototype from Wolfgang Breyha.
847
40525d07
JH
848JH/12 Fix check on SMTP command input synchronisation. Previously there were
849 false-negatives in the check that the sender had not preempted a response
850 or prompt from Exim (running as a server), due to that code's lack of
a5ffa9b4 851 awareness of the SMTP input buffering.
40525d07 852
f33875c3
PP
853PP/04 Add commandline_checks_require_admin option.
854 Exim drops privileges sanely, various checks such as -be aren't a
855 security problem, as long as you trust local users with access to their
856 own account. When invoked by services which pass untrusted data to
857 Exim, this might be an issue. Set this option in main configuration
858 AND make fixes to the calling application, such as using `--` to stop
859 processing options.
860
a5ffa9b4
JH
861JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
862 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
863 responses to those, into a single TLS record each way (this usually means
864 a single packet). As a side issue, smtp_enforce_sync now works on TLS
865 connections.
925ac8e4 866
6600985a
PP
867PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
868 affects you only if you're dancing at the edge of the param size limits.
869 If you are, and this message makes sense to you, then: raise the
870 configured limit or use OpenSSL 1.1. Nothing we can do for older
871 versions.
872
ac4d558b
JH
873JH/14 For the "sock" variant of the malware scanner interface, accept an empty
874 cmdline element to get the documented default one. Previously it was
875 inaccessible.
876
e69636bc
JH
877JH/15 Fix a crash in the smtp transport caused when two hosts in succession
878 are unsuable for non-message-specific reasons - eg. connection timeout,
879 banner-time rejection.
880
a843a57e
JH
881JH/16 Fix logging of delivery remote port, when specified by router, under
882 callout/hold.
883
8e041ae0
PP
884PP/06 Repair manualroute's ability to take options in any order, even if one
885 is the name of a transport.
833c70bc
PP
886 Fixes bug 2140.
887
35a04365
HSHR
888HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
889
4226691b
JH
890JH/17 Change the list-building routines interface to use the expanding-string
891 triplet model, for better allocation and copying behaviour.
892
d185889f
JH
893JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
894 Previously it was constructed the first time a possibly-matching string
895 was met in the configuration file input during startup; now it is done
896 during compilation.
897
0a6c178c
JH
898JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
899 compatible one, to avoid the (poorly documented) possibility of a config
900 file in the working directory redirecting the DB files, possibly correpting
02745400 901 some existing file. CVE-2017-10140 assigned for BDB.
0a6c178c 902
fae8970d
JH
903JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
904 cache-hot. Previously, although the result was properly cached, the
905 initial verify call returned a defer.
906
ad1a76fe 907JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
14de8063
JH
908 the main verify for receipient in uncached-mode.
909
ad1a76fe
JH
910JH/22 Retire historical build files to an "unsupported" subdir. These are
911 defined as "ones for which we have no current evidence of testing".
912
135e9496
JH
913JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
914 if present. Previously it was ignored.
915
f2ed27cf
JH
916JH/24 Start using specified-initialisers in C structure init coding. This is
917 a C99 feature (it's 2017, so now considered safe).
918
7eb0e5d2
JH
919JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
920 if was a fixed-sized field and bitmask ops via macros; it is now more
921 extensible.
922
4f9f4be4
923PP/07 GitHub PR 56: Apply MariaDB build fix.
924 Patch provided by Jaroslav Škarvada.
925
dc4de9cc
PP
926PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
927 during Coverity cleanups [4.87 JH/47]
928 Diagnosis and fix provided by Michael Fischer v. Mollard.
929
ea18931d
JH
930JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
931 the right size to place the terminating semicolon on its own folded
932 line, the header hash was calculated to an incorrect value thanks to
933 the (relaxed) space the fold became.
934
0768462d 935HS/02 Fix Bug 2130: large writes from the transport subprocess were chunked
2cee425a
HSHR
936 and confused the parent.
937
848214f7
JH
938JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
939 which could crash as a result. This could lead to undeliverable messages.
940
9e0ed81f
JH
941JH/28 Logging: "next input sent too soon" now shows where input was truncated
942 for log purposes.
943
2540f2f8
JH
944JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
945 matters on fast-turnover and PID-randomising systems, which were getting
946 out-of-order delivery.
947
e5ab0ba9
JH
948JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
949 a possibly-overlapping copy. The symptom was that "Remote host closed
950 connection in response to HELO" was logged instead of the actual 4xx
951 error for the HELO.
952
e99a3a6c
JH
953JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
954 Previously only that bufferd was discarded, resulting in SYMTP command
955 desynchronisation.
956
18067c75
JH
957JH/32 DKIM: when a message has multiple signatures matching an identity given
958 in dkim_verify_signers, run the dkim acl once for each. Previously only
959 one run was done. Bug 2189.
960
72934ba7
JH
961JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
962 "panic the current process" to "deliberately defer". The panic log is
963 still written with the problem list name; the mail and reject logs now
964 get a temp-reject line for the message that was being handled, saying
965 something like "domains check lookup or other defer". The SMTP 451
966 message is still "Temporary local problem".
967
625667b6
JH
968JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
969 A crafted sequence of BDAT commands could result in in-use memory beeing
b488395f
JH
970 freed. CVE-2017-16943.
971
972HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
973 from SMTP input. Previously it was always done; now only done for DATA
974 and not BDAT commands. CVE-2017-16944.
625667b6 975
d21bf202
JH
976JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
977 to the message (such as an overlong header line). Previously this was
978 not done and we did not exit BDAT mode. Followon from the previous item
979 though a different problem.
980
acfc18c3 981
fd047340 982Exim version 4.89
acfc18c3 983-----------------
4c57a40e 984
9427e879 985JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
4c04137d 986 than -2003 did; needs libidn2 in addition to libidn.
fd047340 987
7b283890
JH
988JH/02 The path option on a pipe transport is now expanded before use.
989
4c57a40e
PP
990PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
991 Patch provided by "Björn", documentation fix added too.
992
5d036699
JH
993JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
994 missing a wire-to-host endian conversion.
995
f4630439
JH
996JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
997 close after a BDAT command line could be taken as a following command,
998 giving a synch failure. Fix by only checking for synch immediately
999 before acknowledging the chunk.
1000
f988ce57
JS
1001PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
1002 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
1003 macro. Patches provided by Josh Soref.
1004
bd8fbe36
JH
1005JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
1006 Previously we did not; the RFC seems ambiguous and VRFY is not listed
1007 by IANA as a service extension. However, John Klensin suggests that we
1008 should.
1009
1010JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
b895f4b2
JH
1011 the dkim code may be unix-mode line endings rather than smtp wire-format
1012 CRLF, so prepend a CR to any bare LF.
fd047340 1013
bd8fbe36 1014JH/07 Rationalise the coding for callout smtp conversations and transport ones.
902fbd69
JH
1015 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
1016
bd8fbe36
JH
1017JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
1018 the first were themselves being wrongly included in the feed into dkim
1019 processing; with most chunk sizes in use this resulted in an incorrect
1020 body hash calculated value.
1021
eea19017
JH
1022JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
1023 DKIM signature block, for verification. Although advised against by
1024 standards it is specifically not ruled illegal.
1025
44e6651b
JH
1026JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
1027
1028JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
1029 missing a body hash (the bh= tag).
1030
1031JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
1032 It seems that HAProxy sends the Proxy Protocol information in clear and
1033 only then does a TLS startup, so do the same.
1034
1035JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
1036 TCP connections (such as for Spamd) unless the daemon successfully set
1037 Fast Open mode on its listening sockets. This fixes breakage seen on
1038 too-old kernels or those not configured for Fast Open, at the cost of
1039 requiring both directions being enabled for TFO, and TFO never being used
1040 by non-daemon-related Exim processes.
1041
1042JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
1043 endings, at least on the first header line. Try to canonify any that get
1044 past that check, despite the cost.
1045
b6040544
JH
1046JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
1047 now limited to an arbitrary five deep, while parsing addresses with the
1048 strip_excess_angle_brackets option enabled.
1049
f700ea4d
PP
1050PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
1051 instead leave the unprompted TLS handshake in socket buffer for the
1052 TLS library to consume.
1053
da88acae
PP
1054PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
1055
f6ef9370
PP
1056PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
1057
90341c71
JH
1058JH/16 Drop variables when they go out of scope. Memory management drops a whole
1059 region in one operation, for speed, and this leaves assigned pointers
1060 dangling. Add checks run only under the testsuite which checks all
1061 variables at a store-reset and panics on a dangling pointer; add code
1062 explicitly nulling out all the variables discovered. Fixes one known
1063 bug: a transport crash, where a dangling pointer for $sending_ip_address
1064 originally assigned in a verify callout, is re-used.
1065
1ec2ab36
PP
1066PP/06 Drop '.' from @INC in various Perl scripts.
1067
1068PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
1069
1070PP/08 Reduce a number of compilation warnings under clang; building with
1071 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
1072 should be warning-free.
1073
8b2b9480
PP
1074JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
1075
1076HS/01 Fix portability problems introduced by PP/08 for platforms where
1077 realloc(NULL) is not equivalent to malloc() [SunOS et al].
1078
d953610f
HSHR
1079HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
1080 chunk. This allows us to accept broken chunked messages. We need a more
1081 general solution here.
1082
7dc5f827
PP
1083PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
1084 already-broken messages in the queue.
1085
4bb432cb
PP
1086JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
1087
3b1a84c8
PP
1088JH/19 Fix reference counting bug in routing-generated-address tracking.
1089
902fbd69 1090
8d042305
JH
1091Exim version 4.88
1092-----------------
4c57a40e 1093
9094b84b
JH
1094JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
1095 supports it and a size is available (ie. the sending peer gave us one).
8d042305 1096
03d5892b
JH
1097JH/02 The obsolete acl condition "demime" is removed (finally, after ten
1098 years of being deprecated). The replacements are the ACLs
1099 acl_smtp_mime and acl_not_smtp_mime.
1100
4b0fe319
JH
1101JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
1102 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
1103 or even an in-clear connection were permitted. Now, if the host lookup
1104 was dnssec and dane was requested then the host is only used if the
1105 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
1106 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
1107 if one fails this test.
1108 This means that a poorly-configured remote DNS will make it incommunicado;
1109 but it protects against a DNS-interception attack on it.
1110
789f8a4f
JH
1111JH/04 Bug 1810: make continued-use of an open smtp transport connection
1112 non-noisy when a race steals the message being considered.
1113
23bb6982 1114JH/05 If main configuration option tls_certificate is unset, generate a
f59aaaaa 1115 self-signed certificate for inbound TLS connections.
23bb6982 1116
0bd1b1ed 1117JH/06 Bug 165: hide more cases of password exposure - this time in expansions
f42deca9 1118 in rewrites and routers.
0bd1b1ed 1119
20b9a2dc
JH
1120JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
1121 and logged a warning sing 4.83; now they are a configuration file error.
1122
05392bbc
JH
1123JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
1124 (lacking @domain). Apply the same qualification processing as RCPT.
1125
1a6230a3
JH
1126JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
1127
cfab9d68
JH
1128JH/10 Support ${sha256:} applied to a string (as well as the previous
1129 certificate).
1130
98c82a3d
JH
1131JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
1132 a cutthrough deliver is pending, as we always want to make a connection.
1133 This also avoids re-routing the message when later placing the cutthrough
1134 connection after a verify cache hit.
1135 Do not update it with the verify result either.
1136
1137JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
1138 when routing results in more than one destination address.
1139
ae8386f0
JH
1140JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
1141 signing (which inhibits the cutthrough capability). Previously only
1142 the presence of an option was tested; now an expansion evaluating as
1143 empty is permissible (obviously it should depend only on data available
1144 when the cutthrough connection is made).
1145
0d9fa8c0
JH
1146JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
1147 the relevant preceding SMTP command did not note the pipelining mode.
1148
3581f321
JH
1149JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
1150 Previously they were not counted.
1151
ef3a1a30
JH
1152JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
1153 as one having no matching records. Previously we deferred the message
1154 that needed the lookup.
1155
4c04137d 1156JH/17 Fakereject: previously logged as a normal message arrival "<="; now
27b9e5f4
JH
1157 distinguished as "(=".
1158
1435d4b2
JH
1159JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
1160 for missing MX records. Previously it only worked for missing A records.
1161
eea0defe
JB
1162JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
1163
1164JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
1165 after the data-go-ahead and data-ack. Patch from Jason Betts.
860cdda2 1166
4c04137d 1167JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
72a201e2
TM
1168 even for a "none" policy. Patch from Tony Meyer.
1169
1c788856
JH
1170JH/22 Fix continued use of a connection for further deliveries. If a port was
1171 specified by a router, it must also match for the delivery to be
1172 compatible.
1173
e3b1f624
JH
1174JH/23 Bug 1874: fix continued use of a connection for further deliveries.
1175 When one of the recipients of a message was unsuitable for the connection
1176 (has no matching addresses), we lost track of needing to mark it
1177 deferred. As a result mail would be lost.
1178
a57ce043
JH
1179JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
1180
f59aaaaa 1181JH/25 Decoding ACL controls is now done using a binary search; the source code
2d009132
JH
1182 takes up less space and should be simpler to maintain. Merge the ACL
1183 condition decode tables also, with similar effect.
d7bed771 1184
d1f9fb42
JH
1185JH/26 Fix problem with one_time used on a redirect router which returned the
1186 parent address unchanged. A retry would see the parent address marked as
1187 delivered, so not attempt the (identical) child. As a result mail would
1188 be lost.
1189
92b0827a
JH
1190JH/27 Fix a possible security hole, wherein a process operating with the Exim
1191 UID can gain a root shell. Credit to http://www.halfdog.net/ for
1192 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
1193 itself :(
1194
ddf1b11a
JH
1195JH/28 Enable {spool,log} filesystem space and inode checks as default.
1196 Main config options check_{log,spool}_{inodes,space} are now
1197 100 inodes, 10MB unless set otherwise in the configuration.
1198
3cc3f762
JH
1199JH/29 Fix the connection_reject log selector to apply to the connect ACL.
1200 Previously it only applied to the main-section connection policy
1201 options.
1202
ae5afa61
JH
1203JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
1204
317e40ac
PP
1205PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
1206 by me. Added RFC7919 DH primes as an alternative.
1207
8b0fb68e
PP
1208PP/02 Unbreak build via pkg-config with new hash support when crypto headers
1209 are not in the system include path.
1210
ad7fc6eb 1211JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
f59aaaaa 1212 GnuTLS, when a session startup failed (eg because the client disconnected)
ad7fc6eb
JH
1213 Exim did stdio operations after fclose. This was exposed by a recent
1214 change which nulled out the file handle after the fclose.
ad7fc6eb 1215
ee5b1e28
JH
1216JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
1217 signed directly by the cert-signing cert, rather than an intermediate
1218 OCSP-signing cert. This is the model used by LetsEncrypt.
1219
5ddc9771
JH
1220JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
1221
8d73599f
JH
1222HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
1223 an incoming connection.
1224
446415f5
HSHR
1225HS/02 Bug 1802: Do not half-close the connection after sending a request
1226 to rspamd.
1227
8e53a4fc
HSHR
1228HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
1229 fallback to "prime256v1".
8d042305 1230
87cb4a16 1231JH/34 SECURITY: Use proper copy of DATA command in error message.
4c57a40e 1232 Could leak key material. Remotely exploitable. CVE-2016-9963.
87cb4a16
JH
1233
1234
0d9b78be
JH
1235Exim version 4.87
1236-----------------
4c57a40e 1237
82d14d6a
JH
1238JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
1239 and 3.4.4 - once the server is enabled to respond to an OCSP request
1240 it does even when not requested, resulting in a stapling non-aware
1241 client dropping the TLS connection.
0d9b78be 1242
6c6d6e48
TF
1243TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
1244 support variable-length bit vectors. No functional change.
1245
ac881e27
TF
1246TF/02 Improve the consistency of logging incoming and outgoing interfaces.
1247 The I= interface field on outgoing lines is now after the H= remote
1248 host field, same as incoming lines. There is a separate
1249 outgoing_interface log selector which allows you to disable the
1250 outgoing I= field.
1251
c8899c20
JH
1252JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
1253 If not running log_selector +smtp_connection the mainlog would be held
1254 open indefinitely after a "too many connections" event, including to a
1255 deleted file after a log rotate. Leave the per net connection logging
1256 leaving it open for efficiency as that will be quickly detected by the
1257 check on the next write.
1258
f1b81d81
HSHR
1259HS/01 Bug 1671: Fix post transport crash.
1260 Processing the wait-<transport> messages could crash the delivery
1261 process if the message IDs didn't exist for some reason. When
1262 using 'split_spool_directory=yes' the construction of the spool
1263 file name failed already, exposing the same netto behaviour.
1264
f38917cc
JH
1265JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
1266 mime_regex ACL conditions.
1267
895fbaf2
JH
1268JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
1269 to DSN fail messages (bounces): remote IP, remote greeting, remote response
1270 to HELO, local diagnostic string.
1271
805bb5c3
JH
1272JH/05 Downgrade message for a TLS-certificate-based authentication fail from
1273 log line to debug. Even when configured with a tls authenticator many
1274 client connections are expected to not authenticate in this way, so
1275 an authenticate fail is not an error.
1276
56c2a7be
HSHR
1277HS/02 Add the Exim version string to the process info. This way exiwhat
1278 gives some more detail about the running daemon.
1279
4c04137d 1280JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
14b3c5bc
JH
1281 matter for fast-change records such as DNSBLs.
1282
6f6dedcc
JH
1283JH/07 Bug 1678: Always record an interface option value, if set, as part of a
1284 retry record, even if constant. There may be multiple transports with
1285 different interface settings and the retry behaviour needs to be kept
1286 distinct.
1287
0f557e90
JH
1288JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
1289
1290JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
1291
ec0eb1a3
JH
1292JH/10 Bug 840: fix log_defer_output option of pipe transport
1293
41e93589
JH
1294JH/11 Bug 830: use same host for all RCPTS of a message, even under
1295 hosts_randomize. This matters a lot when combined with mua_wrapper.
1296
98b98887 1297JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
376d2ec0
JH
1298 ${quote_pgsql:<string>} operator.
1299
98b98887
JH
1300JH/13 Bug 1708: avoid misaligned access in cached lookup.
1301
858e91c2
JH
1302JH/14 Change header file name for freeradius-client. Relevant if compiling
1303 with Radius support; from the Gentoo tree and checked under Fedora.
1304
1305JH/15 Bug 1712: Introduce $prdr_requested flag variable
1306
6ff55e50
JH
1307JH/16 Bug 1714: Permit an empty string as expansion result for transport
1308 option transport_filter, meaning no filtering.
1309
3b957582
JB
1310JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
1311
23f3dc67
JH
1312JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
1313 defaults to "*" (all hosts). The variable is now available when not built
4c04137d 1314 with TLS, default unset, mainly to enable keeping the testsuite sane.
23f3dc67
JH
1315 If a server certificate is not supplied (via tls_certificate) an error is
1316 logged, and clients will find TLS connections fail on startup. Presumably
1317 they will retry in-clear.
1318 Packagers of Exim are strongly encouraged to create a server certificate
1319 at installation time.
1320
240c288f
JH
1321HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
1322 with the $config_file variable.
1323
5ef5dd52
JB
1324JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
1325 in transport context, after the attempt, and per-recipient. The latter type
1326 is per host attempted. The event data is the error message, and the errno
1327 information encodes the lookup type (A vs. MX) used for the (first) host,
4c04137d 1328 and the trailing two digits of the smtp 4xx response.
5ef5dd52 1329
e161710d
GF
1330GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
1331 to write to mainlog (or rejectlog, paniclog) in the window between file
1332 creation and permissions/ownership being changed. Particularly affects
1333 installations where exicyclog is run as root, rather than exim user;
1334 result is that the running daemon panics and dies.
1335
a159f203
JH
1336JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
1337
7f06582c
JH
1338JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
1339 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
1340 "pri" and "weight". Note that the previous implicit priority given by the
1341 list order is no longer honoured.
1342
4c04137d 1343JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
abe1010c
JH
1344 for DKIM processing.
1345
f0989ec0
JH
1346JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
1347 by defining SUPPORT_SOCKS.
74f150bf 1348
cee5f132
JH
1349JH/26 Move PROXY support from Experimental to mainline, enabled for a build
1350 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
e6d2a989
JH
1351 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
1352 variables are renamed to proxy_{local,external}_{address,port}.
cee5f132 1353
8c5d388a
JH
1354JH/27 Move Internationalisation support from Experimental to mainline, enabled
1355 for a build by defining SUPPORT_I18N
1356
2d8d625b
JH
1357JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
1358 of the query string, and make ${quote_redis:} do that quoting.
1359
0cbf2b82
JH
1360JH/29 Move Events support from Experimental to mainline, enabled by default
1361 and removable for a build by defining DISABLE_EVENT.
1362
f2f2c91b
JH
1363JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
1364
ce325893
JH
1365JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
1366 cached by the daemon.
1367
de78e2d5
JH
1368JH/32 Move Redis support from Experimental to mainline, enabled for a build
1369 by defining LOOKUP_REDIS. The libhiredis library is required.
1370
379ba7d0
JH
1371JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
1372 keys are given for lookup.
1373
f444c2c7
JH
1374JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
1375 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
07c73177
JH
1376 only supported when built with TLS support. The PolarSSL SHA routines
1377 are still used when the TLS library is too old for convenient support.
f444c2c7 1378
a57b6200
JH
1379JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
1380 openssl_options), for security. OpenSSL forces this from version 1.1.0
1381 server-side so match that on older versions.
1382
07c73177 1383JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
fa01e4f8 1384 allocation for $value could be released as the expansion processing
07c73177 1385 concluded, but leaving the global pointer active for it.
fa01e4f8 1386
4f6ae5c3
JH
1387JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
1388 and to use the domains and local_parts ACL conditions.
1389
1bc460a6
JH
1390JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
1391 incorrectly not doubled on cutthrough transmission, hence seen as a
1392 body-termination at the receiving system - resulting in truncated mails.
62ac2eb7 1393 Commonly the sender saw a TCP-level error, and retransmitted the message
1bc460a6
JH
1394 via the normal store-and-forward channel. This could result in duplicates
1395 received - but deduplicating mailstores were liable to retain only the
1396 initial truncated version.
1397
ab9152ff 1398JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
df3def24 1399
67e87fcf
JH
1400JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
1401
ab9152ff
JH
1402JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
1403 we're in there, support oversigning also; bug 1309.
1404
af483912
JH
1405JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
1406
bc3c7bb7 1407HS/04 Add support for keep_environment and add_environment options.
df3def24 1408
13559da6
JH
1409JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
1410 either intentional arithmetic overflow during PRNG, or testing config-
1411 induced overflows.
1412
59eaad2b
JH
1413JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
1414 delivery resulted in actual delivery. Cancel cutthrough before DATA
1415 stage.
1416
f9334a28
JH
1417JH/45 Fix cutthrough, when connection not opened by verify and target hard-
1418 rejects a recipient: pass the reject to the originator.
1419
dc8091e7
JH
1420JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
1421 Many were false-positives and ignorable, but it's worth fixing the
1422 former class.
1423
dfe7d917
JH
1424JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
1425 for the new environment-manipulation done at startup. Move the routines
1426 from being local to tls.c to being global via the os.c file.
1427
93cc2d6e
JH
1428JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
1429 an extract embedded as result-arg for a map, the first arg for extract
1430 is unavailable so we cannot tell if this is a numbered or keyed
1431 extraction. Accept either.
1432
13559da6 1433
9c695f6d
JH
1434Exim version 4.86
1435-----------------
4c57a40e 1436
9c695f6d
JH
1437JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
1438 expanded.
1439
506900af
JH
1440JH/02 The smtp transport option "multi_domain" is now expanded.
1441
ad07e9ad
JH
1442JH/03 The smtp transport now requests PRDR by default, if the server offers
1443 it.
1444
01a4a5c5 1445JH/04 Certificate name checking on server certificates, when exim is a client,
b3ef41c9 1446 is now done by default. The transport option tls_verify_cert_hostnames
01a4a5c5
JH
1447 can be used to disable this per-host. The build option
1448 EXPERIMENTAL_CERTNAMES is withdrawn.
1449
cb1d7830 1450JH/05 The value of the tls_verify_certificates smtp transport and main options
0e0f3f56 1451 default to the word "system" to access the system default CA bundle.
cb1d7830
JH
1452 For GnuTLS, only version 3.0.20 or later.
1453
610ff438 1454JH/06 Verification of the server certificate for a TLS connection is now tried
6d580f19
JH
1455 (but not required) by default. The verification status is now logged by
1456 default, for both outbound TLS and client-certificate supplying inbound
1457 TLS connections
610ff438 1458
f926e272
JH
1459JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
1460 sites use this now.
1461
50dc7409
JH
1462JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
1463 Status Notification (bounce) messages are now MIME format per RFC 3464.
1464 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
1465 under the control of the dsn_advertise_hosts option, and routers may
1466 have a dsn_lasthop option.
1467
0f0c8159
JH
1468JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
1469 default, modifiable by a malware= option. The list separator for
23763898 1470 the options can now be changed in the usual way. Bug 68.
4e71661f 1471
1ad6489e
JH
1472JH/10 The smtp_receive_timeout main option is now expanded before use.
1473
aeaf5db3
JH
1474JH/11 The incoming_interface log option now also enables logging of the
1475 local interface on delivery outgoing connections.
1476
5032d1cf
JH
1477JH/12 The cutthrough-routing facility now supports multi-recipient mails,
1478 if the interface and destination host and port all match.
1479
7e8360e6
JH
1480JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
1481 /defer_ok option.
1482
c5f280e2
AL
1483JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
1484 Patch from Andrew Lewis.
1485
fd4d8871 1486JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
dc7b3d36 1487 now supports optional time-restrictions, weighting, and priority
fd4d8871
R
1488 modifiers per server. Patch originally by <rommer@active.by>.
1489
1490JH/16 The spamd_address main option now supports a mixed list of local
2aad5761
JH
1491 and remote servers. Remote servers can be IPv6 addresses, and
1492 specify a port-range.
fd4d8871 1493
23763898
JH
1494JH/17 Bug 68: The spamd_address main option now supports an optional
1495 timeout value per server.
1496
2ad78978
JH
1497JH/18 Bug 1581: Router and transport options headers_add/remove can
1498 now have the list separator specified.
1499
8a512ed5 1500JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
cfab9d68 1501 option values.
8a512ed5 1502
82c0c8ea 1503JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
f69979cf
JH
1504 under OpenSSL.
1505
cc00f4af
JH
1506JH/21 Support for the A6 type of dns record is withdrawn.
1507
82c0c8ea
JH
1508JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
1509 rather than the verbs used.
1510
b980ed83
JH
1511JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
1512 from 255 to 1024 chars.
1513
6c9ed72e
JH
1514JH/24 Verification callouts now attempt to use TLS by default.
1515
cfab9d68 1516HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
99c1bb4e 1517 are generic router options now. The defaults didn't change.
50dc7409 1518
f846c8f5
JH
1519JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
1520 Original patch from Alexander Shikoff, worked over by JH.
1521
fd4c285c
HSHR
1522HS/02 Bug 1575: exigrep falls back to autodetection of compressed
1523 files if ZCAT_COMMAND is not executable.
1524
4c04137d 1525JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
fd7f7910 1526
d2a2c69b
JH
1527JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
1528
8241d8dd
JH
1529JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
1530 Normally benign, it bites when the pair was led to by a CNAME;
4c04137d 1531 modern usage is to not canonicalize the domain to a CNAME target
8241d8dd
JH
1532 (and we were inconsistent anyway for A-only vs AAAA+A).
1533
1f12df4d
JH
1534JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
1535
1f155f8e
JH
1536JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
1537 when evaluating $sender_host_dnssec.
1538
1705dd20
JH
1539JH/31 Check the HELO verification lookup for DNSSEC, adding new
1540 $sender_helo_dnssec variable.
1541
038597d2
PP
1542JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
1543
474f71bf
JH
1544JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
1545
7137ca4b
JH
1546JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
1547
dcb1095c
JH
1548JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
1549 documented as working, but never had. Support all but $spam_report.
1550
2f460950
JH
1551JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
1552 added for tls authenticator.
1553
2f680c0c
HSHR
1554HS/03 Add perl_taintmode main config option
1555
9c695f6d 1556
e449c3b0
TL
1557Exim version 4.85
1558-----------------
4c57a40e 1559
e449c3b0
TL
1560TL/01 When running the test suite, the README says that variables such as
1561 no_msglog_check are global and can be placed anywhere in a specific
1562 test's script, however it was observed that placement needed to be near
1563 the beginning for it to behave that way. Changed the runtest perl
1564 script to read through the entire script once to detect and set these
1565 variables, reset to the beginning of the script, and then run through
1566 the script parsing/test process like normal.
1567
ac20058f
TL
1568TL/02 The BSD's have an arc4random API. One of the functions to induce
1569 adding randomness was arc4random_stir(), but it has been removed in
1570 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
1571 function when detected.
1572
a9b8ec8b
JH
1573JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
1574 cause callback expansion.
1575
6286d7c4
TL
1576TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
1577 syntax errors in an expansion can be treated as a string instead of
1578 logging or causing an error, due to the internal use of bool_lax
1579 instead of bool when processing it.
1580
0f06b4f2 1581JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
d567a64d
JH
1582 server certificates when making smtp deliveries.
1583
be36e572
JH
1584JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
1585
ac4ef9bd
JH
1586JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1587
0eb51736
TL
1588TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1589
c713ca4b
TL
1590TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1591 Merged patch from Sebastian Wiedenroth.
e449c3b0 1592
bd21a787
WB
1593JH/05 Fix results-pipe from transport process. Several recipients, combined
1594 with certificate use, exposed issues where response data items split
1595 over buffer boundaries were not parsed properly. This eventually
1596 resulted in duplicates being sent. This issue only became common enough
4c04137d 1597 to notice due to the introduction of connection certificate information,
bd21a787
WB
1598 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1599
8bc732e8
JH
1600JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1601 size buffer was used, resulting in syntax errors when an expansion
1602 exceeded it.
1603
a7fec7a7
JH
1604JH/07 Add support for directories of certificates when compiled with a GnuTLS
1605 version 3.3.6 or later.
1606
4c04137d 1607JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
774ef2d7
JH
1608 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1609 both become "event_action", the variables become $event_name, $event_data
aec45841 1610 and $event_defer_errno. There is a new variable $verify_mode, usable in
723fe533
JH
1611 routers, transports and related events. The tls:cert event is now also
1612 raised for inbound connections, if the main configuration event_action
1613 option is defined.
774ef2d7 1614
eca4debb
TL
1615TL/06 In test suite, disable OCSP for old versions of openssl which contained
1616 early OCSP support, but no stapling (appears to be less than 1.0.0).
1617
8d692470
JH
1618JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1619 server certificate names available under the smtp transport option
1620 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1621 matches.
1622
e9477a08
JH
1623JH/10 Time-related extraction expansions from certificates now use the main
1624 option "timezone" setting for output formatting, and are consistent
1625 between OpenSSL and GnuTLS compilations. Bug 1541.
1626
ad4c5ff9
JH
1627JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1628 encoded parameter in the incoming message. Bug 1558.
8dea5edf
JH
1629
1630JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1631 include certificate info, eximon was claiming there were spoolfile
1632 syntax errors.
1633
3394b36a 1634JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
8dea5edf
JH
1635
1636JH/14 Log delivery-related information more consistently, using the sequence
1637 "H=<name> [<ip>]" wherever possible.
1638
3394b36a
TL
1639TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1640 are problematic for Debian distribution, omit them from the release
1641 tarball.
1642
ad4c5ff9
JH
1643JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1644
4c04137d 1645JH/16 Fix string representation of time values on 64bit time_t architectures.
ad4c5ff9
JH
1646 Bug 1561.
1647
1648JH/17 Fix a null-indirection in certextract expansions when a nondefault
1649 output list separator was used.
1650
8bc732e8 1651
1f0ebb98
TL
1652Exim version 4.84
1653-----------------
09728d20
TL
1654TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1655 checkers that were complaining about end of non-void function with no
1656 return.
1f0ebb98 1657
a612424f 1658JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
4c04137d 1659 This was a regression introduced in 4.83 by another bugfix.
a612424f
JH
1660
1661JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1662
1663TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
a9b8ec8b 1664 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
a612424f 1665
1f0ebb98 1666
c0e56233
TF
1667Exim version 4.83
1668-----------------
1669
1670TF/01 Correctly close the server side of TLS when forking for delivery.
1671
1672 When a message was received over SMTP with TLS, Exim failed to clear up
1673 the incoming connection properly after forking off the child process to
1674 deliver the message. In some situations the subsequent outgoing
1675 delivery connection happened to have the same fd number as the incoming
1676 connection previously had. Exim would try to use TLS and fail, logging
1677 a "Bad file descriptor" error.
1678
7245734e
TF
1679TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1680 utilities have not been installed.
1681
fd5dad68
JH
1682JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1683 temporary space as the ACL may create new global variables.
1684
5428a946
TL
1685TL/01 LDAP support uses per connection or global context settings, depending
1686 upon the detected version of the libraries at build time.
1687
a3c86431
TL
1688TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1689 to extract and use the src ip:port in logging and expansions as if it
8ded8589
TL
1690 were a direct connection from the outside internet. PPv2 support was
1691 updated based on HAProxy spec change in May 2014.
a3c86431 1692
aa26e137
JH
1693JH/02 Add ${listextract {number}{list}{success}{fail}}.
1694
5a1b8443
WB
1695TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1696 Properly escape header and check for NULL return.
1697
72c9e342
PP
1698PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1699 not dns_use_dnssec.
1700
76f44207
WB
1701JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1702
770747fd
MFM
1703TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1704 characters in header names, implemented as a verify condition.
1705 Contributed by Michael Fischer v. Mollard.
1706
8ddef691 1707TL/05 Rename SPF condition results err_perm and err_temp to standardized
982650ec
TL
1708 results permerror and temperror. Previous values are deprecated but
1709 still accepted. In a future release, err_perm and err_temp will be
1710 completely removed, which will be a backward incompatibility if the
1711 ACL tests for either of these two old results. Patch contributed by
8ddef691 1712 user bes-internal on the mailing list.
c0e56233 1713
b9c2e32f
AR
1714JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1715
e45a1c37
JH
1716JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1717 selectors, in both main and reject logs.
1718
67d81c10
JH
1719JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1720 failed delivery.
1721
b1f8e4f8
JH
1722JH/07 Add malware type "sock" for talking to simple daemon.
1723
511a6c14 1724JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
511a6c14
JH
1725
1726JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1727 routers/transports under cutthrough routing.
214042d2 1728
51c7471d
JH
1729JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1730 numbers. Touch up "bool" conditional to keep the same definition.
1731
3695be34
TL
1732TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1733
1e06383a
TL
1734JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1735
76146973
JH
1736JH/12 Expand items in router/transport headers_add or headers_remove lists
1737 individually rather than the list as a whole. Bug 1452.
1738
1739 Required for reasonable handling of multiple headers_ options when
1740 they may be empty; requires that headers_remove items with embedded
1741 colons must have them doubled (or the list-separator changed).
1742
8c8b8274
TL
1743TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1744 view the policy declared in the DMARC record. Currently, $dmarc_status
1745 is a combined value of both the record presence and the result of the
1746 analysis.
b1f8e4f8 1747
35aba663
JH
1748JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1749
8c51eead 1750JH/14 New options dnssec_request_domains, dnssec_require_domains on the
578897ea
JH
1751 dnslookup router and the smtp transport (applying to the forward
1752 lookup).
8c51eead 1753
deae092e
HS
1754TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1755 of ldap servers used for a specific lookup. Patch provided by Heiko
1756 Schlichting.
35aba663 1757
fd3b6a4a 1758JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
4e0983dc 1759 New variable $lookup_dnssec_authenticated for observability.
fd3b6a4a 1760
8d91c6dc
LT
1761TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1762 Patch submitted by Lars Timman.
1763
2b4a568d
JH
1764JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1765
d2af03f4
HS
1766TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1767 Requires trusted mode and valid format message id, aborts otherwise.
1768 Patch contributed by Heiko Schlichting.
1769
9d1c15ef
JH
1770JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1771 certextract with support for various fields. Bug 1358.
1772
44662487
JH
1773JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1774 is requested by default, modifiable by smtp transport option
6a8a60e0
JH
1775 hosts_request_ocsp.
1776
ed3bba5f 1777JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
6a8a60e0 1778 operate on certificate variables to give certificate fingerprints
9ef9101c 1779 Also new ${sha256:cert_variable}.
44662487 1780
8ccd00b1
JH
1781JH/23 The PRDR feature is moved from being Experimental into the mainline.
1782
8ded8589
TL
1783TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1784 Christian Aistleitner.
1785
f2de3a33
JH
1786JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1787
6eb02f88
TL
1788TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1789 file. Patch from Wolfgang Breyha.
1790
00bff6f6
JH
1791JH/25 Expand the coverage of the delivery $host and $host_address to
1792 client authenticators run in verify callout. Bug 1476.
1793
071c51f7
JH
1794JH/26 Port service names are now accepted for tls_on_connect_ports, to
1795 align with daemon_smtp_ports. Bug 72.
1796
a6d4c44e
TF
1797TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1798 support and error reporting did not work properly.
1799
3ae173e7
ACK
1800TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1801 and is readable. Patch from Andrew Colin Kissa.
1802
c13d09b8
TL
1803TL/14 Enhance documentation of ${run expansion and how it parses the
1804 commandline after expansion, particularly in the case when an
1805 unquoted variable expansion results in an empty value.
1806
0df4ab80
JH
1807JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1808
66be95e0
PP
1809PP/02 Fix internal collision of T_APL on systems which support RFC3123
1810 by renaming away from it. Addresses GH issue 15, reported by
1811 Jasper Wallace.
1812
1bd0d12b
JH
1813JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1814
0de7239e
TL
1815TL/15 SECURITY: prevent double expansion in math comparison functions
1816 (can expand unsanitized data). Not remotely exploitable.
1817 CVE-2014-2972
1818
fd3b6a4a 1819
2c422e6f 1820Exim version 4.82
98a90c36
PP
1821-----------------
1822
1823PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1824
12f69989
PP
1825PP/02 Make -n do something, by making it not do something.
1826 When combined with -bP, the name of an option is not output.
1827
54c90be1
PP
1828PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1829 by GnuTLS.
1830
1f4a55da
PP
1831PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1832 $sender_host_name and config options to manage this, and basic check
1833 routines.
1834
13363eba 1835PP/05 DSCP support for outbound connections and control modifier for inbound.
36a3ae5f 1836
66645890 1837PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
e402235f
PP
1838 (Only plugin which currently uses this is kerberos4, which nobody should
1839 be using, but we should make it available and other future plugins might
1840 conceivably use it, even though it would break NAT; stuff *should* be
1841 using channel bindings instead).
66645890 1842
a3fb9793 1843PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
f4ee74ac
PP
1844 name; added for Sendmail compatibility; requires admin caller.
1845 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1846 just ignore it); requires trusted caller.
a3fb9793 1847 Also parse but ignore: -Ac -Am -X<logfile>
f4ee74ac 1848 Bugzilla 1117.
a3fb9793 1849
d27f98fe 1850TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
98a90c36 1851
6822b909
TL
1852TL/02 Add +smtp_confirmation as a default logging option.
1853
e7568d51
TL
1854TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1855 Patch by Magnus Holmgren from 2007-02-20.
1856
ae0e32ee 1857TL/04 Bugzilla 1281 - Spec typo.
ca0ff207 1858 Bugzilla 1283 - Spec typo.
97f42f10 1859 Bugzilla 1290 - Spec grammar fixes.
ca0ff207
TL
1860
1861TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
ae0e32ee 1862
e2658fff
TL
1863TL/06 Add Experimental DMARC support using libopendmarc libraries.
1864
83712b39
TL
1865TL/07 Fix an out of order global option causing a segfault. Reported to dev
1866 mailing list by by Dmitry Isaikin.
1867
976b7e9f
JH
1868JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1869
be4a1376
JH
1870JH/02 Support "G" suffix to numbers in ${if comparisons.
1871
ec4b68e5
PP
1872PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1873
d7148a07
NM
1874NM/01 Bugzilla 1197 - Spec typo
1875 Bugzilla 1196 - Spec examples corrections
ec4b68e5 1876
585121e2 1877JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
ec4b68e5 1878
2519e60d
TL
1879PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1880 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1881 function.
a5f239e4 1882
13d08c90
PP
1883PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1884 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1885
bef3ea7f
JH
1886JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1887 "acl {{name}{arg}...}", and optional args on acl condition
1888 "acl = name arg..."
a5f239e4 1889
846726c5
JH
1890JH/05 Permit multiple router/transport headers_add/remove lines.
1891
3a796370
JH
1892JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1893
ea722490 1894JH/07 Avoid using a waiting database for a single-message-only transport.
8b260705
PP
1895 Performance patch from Paul Fisher. Bugzilla 1262.
1896
b1b05573
JH
1897JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1898 Bugzilla 884.
1899
362145b5
JH
1900JH/09 Add $headers_added variable, with content from use of ACL modifier
1901 add_header (but not yet added to the message). Bugzilla 199.
1902
3c0a92dc
JH
1903JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1904 Pulled from Bugzilla 817 by Wolfgang Breyha.
1905
6d7c6175
PP
1906PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1907 CVE-2012-5671
e78e6ecf 1908 (nb: this is the same fix as in Exim 4.80.1)
6d7c6175 1909
6f123593
JH
1910JH/11 Add A= logging on delivery lines, and a client_set_id option on
1911 authenticators.
1912
c8e2fc1e
JH
1913JH/12 Add optional authenticated_sender logging to A= and a log_selector
1914 for control.
1915
005ac57f
PP
1916PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1917
3f1df0e3
PP
1918PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1919 advertise SMTP AUTH mechanism to us, instead of a generic
1920 protocol violation error. Also, make Exim more robust to bad
1921 data from the Dovecot auth socket.
1922
67bd1ab3
TF
1923TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1924
1925 When a queue runner is handling a message, Exim first routes the
1926 recipient addresses, during which it prunes them based on the retry
1927 hints database. After that it attempts to deliver the message to
1928 any remaining recipients. It then updates the hints database using
1929 the retry rules.
1930
1931 So if a recipient address works intermittently, it can get repeatedly
1932 deferred at routing time. The retry hints record remains fresh so the
1933 address never reaches the final cutoff time.
1934
1935 This is a fairly common occurrence when a user is bumping up against
1936 their storage quota. Exim had some logic in its local delivery code
1937 to deal with this. However it did not apply to per-recipient defers
1938 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1939
1ddeb334
TF
1940 This change adds a proper retry rule check during routing so that the
1941 final cutoff time is checked against the message's age. We only do
1942 this check if there is an address retry record and there is not a
1943 domain retry record; this implies that previous attempts to handle
1944 the address had the retry_use_local_parts option turned on. We use
1945 this as an approximation for the destination being like a local
1946 delivery, as in LMTP.
67bd1ab3
TF
1947
1948 I suspect this new check makes the old local delivery cutoff check
1949 redundant, but I have not verified this so I left the code in place.
1950
326cdc37
TF
1951TF/02 Correct gecos expansion when From: is a prefix of the username.
1952
1953 Test 0254 submits a message to Exim with the header
1954
1955 Resent-From: f
1956
1957 When I ran the test suite under the user fanf2, Exim expanded
1958 the header to contain my full name, whereas it should have added
1959 a Resent-Sender: header. It erroneously treats any prefix of the
1960 username as equal to the username.
1961
1962 This change corrects that bug.
1963
f62514b3
GF
1964GF/01 DCC debug and logging tidyup
1965 Error conditions log to paniclog rather than rejectlog.
1966 Debug lines prefixed by "DCC: " to remove any ambiguity.
1967
eb505532
TF
1968TF/03 Avoid unnecessary rebuilds of lookup-related code.
1969
14c7b357
PP
1970PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1971 Bug spotted by Jeremy Harris; was flawed since initial commit.
1972 Would have resulted in OCSP responses post-SNI triggering an Exim
1973 NULL dereference and crash.
1974
94eaf700
PP
1975JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1976
6f5a440a
PP
1977PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1978 Bug detection, analysis and fix by Samuel Thibault.
1979 Bugzilla 1331, Debian bug #698092.
1980
514ee161
SC
1981SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1982
fd98a5c6
JH
1983JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1984 Server implementation by Todd Lyons, client by JH.
1985 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1986 config variable "prdr_enable" controls whether the server
1987 advertises the facility. If the client requests PRDR a new
1988 acl_data_smtp_prdr ACL is called once for each recipient, after
1989 the body content is received and before the acl_smtp_data ACL.
4c04137d 1990 The client is controlled by both of: a hosts_try_prdr option
fd98a5c6
JH
1991 on the smtp transport, and the server advertisement.
1992 Default client logging of deliveries and rejections involving
1993 PRDR are flagged with the string "PRDR".
1994
035c7f1e
PP
1995PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1996 fclose(). Diagnosis by Todd Lyons.
1997
ff284120
PP
1998PP/17 Update configure.default to handle IPv6 localhost better.
1999 Patch by Alain Williams (plus minor tweaks).
2000 Bugzilla 880.
2001
26e72755
PP
2002PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
2003 This is now consistent with GnuTLS, and is now documented: the
2004 previous undocumented portable approach to treating the option as
2005 unset was to force an expansion failure. That still works, and
2006 an empty string is now equivalent.
2007
0fbd9bff
PP
2008PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
2009 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
2010 not performing validation itself.
2011
700d22f3
PP
2012PP/20 Added force_command boolean option to pipe transport.
2013 Patch from Nick Koston, of cPanel Inc.
2014
fcc8e047
JH
2015JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
2016 Bugzilla 321, 823.
2017
4c04137d 2018TF/04 Added udpsend ACL modifier and hexquote expansion operator
7142daca 2019
8c020188
PP
2020PP/21 Fix eximon continuous updating with timestamped log-files.
2021 Broken in a format-string cleanup in 4.80, missed when I repaired the
2022 other false fix of the same issue.
2023 Report and fix from Heiko Schlichting.
2024 Bugzilla 1363.
2025
d13cdd30
PP
2026PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
2027 Report from Prashanth Katuri.
2028
e2fbf4a2
PP
2029PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
2030 It's SecureTransport, so affects any MacOS clients which use the
2031 system-integrated TLS libraries, including email clients.
2032
f4c1088b
PP
2033PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
2034 using a MIME ACL for non-SMTP local injection.
2035 Report and assistance in diagnosis by Warren Baker.
2036
c5c2182f
PP
2037TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
2038
73431ca9
JH
2039JH/16 Fix comparisons for 64b. Bugzilla 1385.
2040
2d07a215
TL
2041TL/09 Add expansion variable $authenticated_fail_id to keep track of
2042 last id that failed so it may be referenced in subsequent ACL's.
2043
a30a8861
TL
2044TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
2045 Alexander Miroch.
2046
33382dd9
TL
2047TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
2048 ldap library initialization, allowing self-signed CA's to be
2049 used. Also properly sets require_cert option later in code by
2050 using NULL (global ldap config) instead of ldap handle (per
2051 session). Bug diagnosis and testing by alxgomz.
6d7c6175 2052
046172e6
TL
2053TL/12 Enhanced documentation in the ratelimit.pl script provided in
2054 the src/util/ subdirectory.
2055
581d7bee 2056TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1a7b746d 2057 renamed to Transport Post Delivery Action by Jeremy Harris, as
9bdd29ad
TL
2058 EXPERIMENTAL_TPDA.
2059
2060TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
2061 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
2062 redis_servers = needs to be configured which will be used by the redis
2063 lookup. Patch from Warren Baker, of The Packet Hub.
2064
237b2cf2
TL
2065TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
2066
9fc5a352
TL
2067TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
2068 hostname or reverse DNS when processing a host list. Used suggestions
2069 from multiple comments on this bug.
1a7b746d 2070
b10e4ec2
TL
2071TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
2072
e2cebd74
TL
2073TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
2074 Missed a few lines, added it to make the runtest require no keyboard
2075 interaction.
2076
2077TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
2078 contains upper case chars. Make router use caseful_local_part.
2079
2519e60d
TL
2080TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
2081 support when GnuTLS has been built with p11-kit.
2082
e78e6ecf 2083
4263f395
PP
2084Exim version 4.80.1
2085-------------------
2086
2087PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
2088 CVE-2012-5671
2c422e6f 2089 This, or similar/improved, will also be change PP/11 of 4.82.
3c0a92dc 2090
ea722490 2091
b1770b6e 2092Exim version 4.80
0599f9cf
PP
2093-----------------
2094
2095PP/01 Handle short writes when writing local log-files.
2096 In practice, only affects FreeBSD (8 onwards).
2097 Bugzilla 1053, with thanks to Dmitry Isaikin.
2098
23c7e742
NM
2099NM/01 Bugzilla 949 - Documentation tweak
2100
b322aac8
NM
2101NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
2102 improved.
2103
4a891427
NM
2104NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
2105
c1e794ba 2106PP/02 Implemented gsasl authenticator.
b322aac8 2107
97753960
PP
2108PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
2109
2110PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
2111 `pkg-config foo` for cflags/libs.
2112
df6303fa
PP
2113PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
2114 with rest of GSASL and with heimdal_gssapi.
2115
7e6a8985
PP
2116PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
2117 `pkg-config foo` for cflags/libs for the TLS implementation.
2118
f1e05cc7 2119PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
20aa9dbd
PP
2120 properties get this fed in as external SSF. A number of robustness
2121 and debugging improvements to the cyrus_sasl authenticator.
b322aac8 2122
4c287009
PP
2123PP/08 cyrus_sasl server now expands the server_realm option.
2124
b98bb9ac
PP
2125PP/09 Bugzilla 1214 - Log authentication information in reject log.
2126 Patch by Jeremy Harris.
2127
4a6a987a
PP
2128PP/10 Added dbmjz lookup type.
2129
c45dd180 2130PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
c7955b11 2131
7db8d074
PP
2132PP/12 MAIL args handles TAB as well as SP, for better interop with
2133 non-compliant senders.
2134 Analysis and variant patch by Todd Lyons.
2135
eae0036b 2136NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
cfab9d68 2137 Bug report from Lars Müller <lars@samba.org> (via SUSE),
e0df1c83
DM
2138 Patch from Dirk Mueller <dmueller@suse.com>
2139
dec5017e
PP
2140PP/13 tls_peerdn now print-escaped for spool files.
2141 Observed some $tls_peerdn in wild which contained \n, which resulted
2142 in spool file corruption.
2143
c80c5570
PP
2144PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
2145 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
2146 or write after TLS renegotiation, which otherwise led to messages
2147 "Got SSL error 2".
2148
076b11e2
PP
2149TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
2150 as a tracking header (ie: a signed header comes before the signature).
2151 Patch from Wolfgang Breyha.
2152
5407bfff
JH
2153JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
2154 comma-sep list; embedded commas doubled.
2155
9e45c72b
PP
2156JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
2157
e74376d8
PP
2158PP/15 LDAP: Check for errors of TLS initialisation, to give correct
2159 diagnostics.
2160 Report and patch from Dmitry Banschikov.
2161
4c04137d 2162PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
da3ad30d
PP
2163 Removed SSL_clear() after SSL_new() which led to protocol negotiation
2164 failures. We appear to now support TLS1.1+ with Exim.
2165
7be682ca
PP
2166PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
2167 lets Exim select keys and certificates based upon TLS SNI from client.
3f0945ff
PP
2168 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
2169 before an outbound SMTP session. New log_selector, +tls_sni.
7be682ca 2170
ef840681
PP
2171PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
2172 NULL dereference. Report and patch from Alun Jones.
2173
5bfb4cdf
PP
2174PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
2175 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
2176 Not seeing resolver debug output on NetBSD, but suspect this is a
2177 resolver implementation change.
2178
c6e95d22
PP
2179PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
2180 Left warnings. Added "eximon gdb" invocation mode.
2181
9cbad13b
PP
2182PP/21 Defaulting "accept_8bitmime" to true, not false.
2183
9ee44efb
PP
2184PP/22 Added -bw for inetd wait mode support.
2185
6a6084f8
PP
2186PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
2187 locate the relevant includes and libraries. Made this the default.
2188
12dd53c7
PP
2189PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
2190 Bugzilla 1246, report and most of solution from Tomasz Kusy.
2191
9e45c72b 2192JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
97d17305
JH
2193 This may cause build issues on older platforms.
2194
17c76198
PP
2195PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
2196 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
2197 gnutls_require_mac & gnutls_require_protocols (no longer supported).
2198 Added SNI support via GnuTLS too.
af3498d6 2199 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
17c76198 2200
53947857 2201PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
3f7eeb86 2202
eae0036b 2203PP/27 Applied dnsdb SPF support patch from Janne Snabb.
8ee4b30e
PP
2204 Applied second patch from Janne, implementing suggestion to default
2205 multiple-strings-in-record handling to match SPF spec.
eae0036b 2206
9e45c72b 2207JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
2605c55b 2208
7390e768
PP
2209PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
2210 read-only, out of scope).
2211 Patch from Wolfgang Breyha, report from Stuart Northfield.
2212
08488c86
PP
2213PP/29 Fix three issues highlighted by clang analyser static analysis.
2214 Only crash-plausible issue would require the Cambridge-specific
2215 iplookup router and a misconfiguration.
2216 Report from Marcin Mirosław.
2217
6475bd82
PP
2218PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
2219
81f91683
PP
2220PP/31 %D in printf continues to cause issues (-Wformat=security), so for
2221 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
2222 As part of this, removing so much warning spew let me fix some minor
2223 real issues in debug logging.
2224
5779e6aa
PP
2225PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
2226 assignment on my part. Fixed.
2227
3375e053
PP
2228PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
2229 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
2230 Janne Snabb (who went above and beyond: thank you).
2231
2232PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
2233 string otherwise requires a connection and a bunch more work and it's
78e0c7a3
PP
2234 relatively easy to get wrong. Should also expose TLS library linkage
2235 problems.
3375e053 2236
9d26b8c0
PP
2237PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
2238 64-bit ${eval} (JH/03).
2239
57eb9e91 2240PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
b87a6e0e
PP
2241 GNU libc to support some of the 64-bit stuff, should not lead to
2242 conflicts. Defined before os.h is pulled in, so if a given platform
2243 needs to override this, it can.
2244
16880d1a
PP
2245PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
2246 protection layer was required, which is not implemented.
2247 Bugzilla 1254, patch from Wolfgang Breyha.
2248
a799883d
PP
2249PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
2250 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
2251 tls_dhparam take prime identifiers. Also unbreak combination of
2252 OpenSSL+DH_params+TLSSNI.
2253
3ecab157 2254PP/39 Disable SSLv2 by default in OpenSSL support.
f0f5a555 2255
0599f9cf 2256
867fcbf5
PP
2257Exim version 4.77
2258-----------------
2259
2260PP/01 Solaris build fix for Oracle's LDAP libraries.
2261 Bugzilla 1109, patch from Stephen Usher.
2262
f1a29782
TF
2263TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
2264
ab42bd23
TK
2265TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
2266 whitespace trailer
867fcbf5 2267
0ca0cf52
TF
2268TF/02 Fix a couple more cases where we did not log the error message
2269 when unlink() failed. See also change 4.74-TF/03.
2270
921b12ca
TF
2271TF/03 Make the exiwhat support code safe for signals. Previously Exim might
2272 lock up or crash if it happened to be inside a call to libc when it
2273 got a SIGUSR1 from exiwhat.
2274
2275 The SIGUSR1 handler appends the current process status to the process
2276 log which is later printed by exiwhat. It used to use the general
2277 purpose logging code to do this, but several functions it calls are
2278 not safe for signals.
2279
2280 The new output code in the SIGUSR1 handler is specific to the process
2281 log, and simple enough that it's easy to inspect for signal safety.
2282 Removing some special cases also simplifies the general logging code.
2283 Removing the spurious timestamps from the process log simplifies
2284 exiwhat.
2285
c99ce5c9
TF
2286TF/04 Improved ratelimit ACL condition.
2287
2288 The /noupdate option has been deprecated in favour of /readonly which
2289 has clearer semantics. The /leaky, /strict, and /readonly update modes
2290 are mutually exclusive. The update mode is no longer included in the
2291 database key; it just determines when the database is updated. (This
4c04137d 2292 means that when you upgrade Exim will forget old rate measurements.)
c99ce5c9
TF
2293
2294 Exim now checks that the per_* options are used with an update mode that
2295 makes sense for the current ACL. For example, when Exim is processing a
2296 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
2297 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
2298 must specify per_mail/readonly. If you omit the update mode it defaults to
2299 /leaky where that makes sense (as before) or /readonly where required.
2300
2301 The /noupdate option is now undocumented but still supported for
2302 backwards compatibility. It is equivalent to /readonly except that in
2303 ACLs where /readonly is required you may specify /leaky/noupdate or
2304 /strict/noupdate which are treated the same as /readonly.
2305
2306 A useful new feature is the /count= option. This is a generalization
2307 of the per_byte option, so that you can measure the throughput of other
2308 aggregate values. For example, the per_byte option is now equivalent
2309 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
2310
2311 The per_rcpt option has been generalized using the /count= mechanism
2312 (though it's more complicated than the per_byte equivalence). When it is
2313 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
2314 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
2315 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
2316 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
2317 Note that using per_rcpt with a non-readonly update mode in more than
2318 one ACL will cause the recipients to be double-counted. (The per_mail
2319 and per_byte options don't have this problem.)
2320
2321 The handling of very low rates has changed slightly. If the computed rate
2322 is less than the event's count (usually one) then this event is the first
2323 after a long gap. In this case the rate is set to the same as this event's
2324 count, so that the first message of a spam run is counted properly.
2325
2326 The major new feature is a mechanism for counting the rate of unique
2327 events. The new per_addr option counts the number of different
2328 recipients that someone has sent messages to in the last time period. It
2329 behaves like per_rcpt if all the recipient addresses are different, but
2330 duplicate recipient addresses do not increase the measured rate. Like
2331 the /count= option this is a general mechanism, so the per_addr option
2332 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
2333 example, measure the rate that a client uses different sender addresses
2334 with the options per_mail/unique=$sender_address. There are further
2335 details in the main documentation.
2336
3634fc25
TF
2337TF/05 Removed obsolete $Cambridge$ CVS revision strings.
2338
792e8a19
TF
2339TF/06 Removed a few PCRE remnants.
2340
5901f0ab
TF
2341TF/07 Automatically extract Exim's version number from tags in the git
2342 repository when doing development or release builds.
2343
7f2a2a43
PP
2344PP/02 Raise smtp_cmd_buffer_size to 16kB.
2345 Bugzilla 879. Patch from Paul Fisher.
e2ca7082 2346
061b7ebd
PP
2347PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
2348 Heavily based on revision 40f9a89a from Simon Arlott's tree.
2349 Bugzilla 97.
2350
e12f8c32
PP
2351PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
2352
9e949f00 2353PP/05 Variable $av_failed, true if the AV scanner deferred.
7f2a2a43
PP
2354 Bugzilla 1078. Patch from John Horne.
2355
2356PP/06 Stop make process more reliably on build failure.
2357 Bugzilla 1087. Patch from Heiko Schlittermann.
9e949f00 2358
555ae6af 2359PP/07 Make maildir_use_size_file an _expandable_ boolean.
ac53fcda
PP
2360 Bugzilla 1089. Patch from Heiko Schlittermann.
2361
2362PP/08 Handle ${run} returning more data than OS pipe buffer size.
2363 Bugzilla 1131. Patch from Holger Weiß.
555ae6af 2364
6f7fe114
PP
2365PP/09 Handle IPv6 addresses with SPF.
2366 Bugzilla 860. Patch from Wolfgang Breyha.
2367
c566dd90
PP
2368PP/10 GnuTLS: support TLS 1.2 & 1.1.
2369 Bugzilla 1156.
89f897c3
PP
2370 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
2371 Bugzilla 1095.
c566dd90 2372
d6cc7c78 2373PP/11 match_* no longer expand right-hand-side by default.
39257585
PP
2374 New compile-time build option, EXPAND_LISTMATCH_RHS.
2375 New expansion conditions, "inlist", "inlisti".
2376
0d0e4455
PP
2377PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
2378
3399bb60 2379PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
d690cbdc
PP
2380
2381PP/14 fix log_write() format string regression from TF/03.
2382 Bugzilla 1152. Patch from Dmitry Isaikin.
2383
0ca0cf52 2384
10906672
PP
2385Exim version 4.76
2386-----------------
2387
2388PP/01 The new ldap_require_cert option would segfault if used. Fixed.
2389
754a0503
PP
2390PP/02 Harmonised TLS library version reporting; only show if debugging.
2391 Layout now matches that introduced for other libraries in 4.74 PP/03.
2392
c0c7b2da
PP
2393PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
2394
e97d1f08
PP
2395PP/04 New "dns_use_edns0" global option.
2396
084c1d8c
PP
2397PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
2398 Bugzilla 1098.
2399
4e7ee012
PP
2400PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
2401 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
da80c2a8 2402
c8d52a00
PP
2403TK/01 Updated PolarSSL code to 0.14.2.
2404 Bugzilla 1097. Patch from Andreas Metzler.
2405
54e7ce4a
PP
2406PP/07 Catch divide-by-zero in ${eval:...}.
2407 Fixes bugzilla 1102.
2408
5ee6f336
PP
2409PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
2410 Bugzilla 1104.
2411
c8d52a00 2412TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
6ea4a851
PP
2413 format-string attack -- SECURITY: remote arbitrary code execution.
2414
2415TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
2416 time unintentionally subject to list matching rules, letting the header
2417 cause arbitrary Exim lookups (of items which can occur in lists, *not*
2418 arbitrary string expansion). This allowed for information disclosure.
2419
2420PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
2421 INT_MIN/-1 -- value coerced to INT_MAX.
c8d52a00 2422
10906672 2423
aa097c4c
NM
2424Exim version 4.75
2425-----------------
2426
4c04137d 2427NM/01 Workaround for PCRE version dependency in version reporting
aa097c4c
NM
2428 Bugzilla 1073
2429
7f3d9eff
TF
2430TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
2431 This fixes portability to compilers other than gcc, notably
2432 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
2433
159f52d2
TF
2434TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
2435 makefiles for portability to HP-UX and POSIX correctness.
2436
0cc9542a
PP
2437PP/01 Permit LOOKUP_foo enabling on the make command-line.
2438 Also via indented variable definition in the Makefile.
2439 (Debugging by Oliver Heesakkers).
2440
f7274286
PP
2441PP/02 Restore caching of spamd results with expanded spamd_address.
2442 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
2443
7b797365
PP
2444PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
2445 Improves build reliability. Fix from: Frank Elsner
2446
caacae52
NM
2447NM/02 Fix wide character breakage in the rfc2047 coding
2448 Fixes bug 1064. Patch from Andrey N. Oktyabrski
2449
09dcaba9
NM
2450NM/03 Allow underscore in dnslist lookups
2451 Fixes bug 1026. Patch from Graeme Fowler
2452
bc19a55b
PP
2453PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
2454 Code patches from Adam Ciarcinski of NetBSD.
caacae52 2455
bd4c9759
NM
2456NM/04 Fixed exiqgrep to cope with mailq missing size issue
2457 Fixes bug 943.
2458
b72aab72
PP
2459PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
2460 is logged, to avoid truncation. Patch from John Horne.
2461
2fe76745
PP
2462PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
2463 Patch from Jakob Hirsch.
2464
76aa570c
PP
2465PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
2466 SQL string expansion failure details.
2467 Patch from Andrey Oktyabrski.
2468
f1e5fef5
PP
2469PP/08 Bugzilla 486: implement %M datestamping in log filenames.
2470 Patch from Simon Arlott.
2471
4d805ee9
PP
2472PP/09 New lookups functionality failed to compile on old gcc which rejects
2473 extern declarations in function scope.
2474 Patch from Oliver Fleischmann
2475
cd59ab18
PP
2476PP/10 Use sig_atomic_t for flags set from signal handlers.
2477 Check getgroups() return and improve debugging.
2478 Fixed developed for diagnosis in bug 927 (which turned out to be
2479 a kernel bug).
2480
332f5cf3
PP
2481PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
2482 Patch from Mark Zealey.
2483
29cfeb94
PP
2484PP/12 Bugzilla 1056: Improved spamd server selection.
2485 Patch from Mark Zealey.
2486
660242ad
PP
2487PP/13 Bugzilla 1086: Deal with maildir quota file races.
2488 Based on patch from Heiko Schlittermann.
2489
bc4bc4c5
PP
2490PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
2491 Patch from Uwe Doering, sign-off by Michael Haardt.
2492
2e64baa9
NM
2493NM/05 Fix to spam.c to accommodate older gcc versions which dislike
2494 variable declaration deep within a block. Bug and patch from
2495 Dennis Davis.
2496
4c04137d 2497PP/15 lookups-Makefile IRIX compatibility coercion.
bddd7526 2498
6bac1a9a
PP
2499PP/16 Make DISABLE_DKIM build knob functional.
2500
552193f0
NM
2501NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
2502 Patch by Simon Arlott
baeee2c1 2503
1b587e48
TF
2504TF/03 Fix valgrind.h portability to C89 compilers that do not support
2505 variable argument macros. Our copy now differs from upstream.
2506
aa097c4c 2507
8c07b69f
TF
2508Exim version 4.74
2509-----------------
2510
2511TF/01 Failure to get a lock on a hints database can have serious
2512 consequences so log it to the panic log.
2513
c0ea85ab
TF
2514TF/02 Log LMTP confirmation messages in the same way as SMTP,
2515 controlled using the smtp_confirmation log selector.
2516
0761d44e
TF
2517TF/03 Include the error message when we fail to unlink a spool file.
2518
0a349494
PP
2519DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
2520 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
2521 for maintaining out-of-tree patches for some time.
2522
2523PP/01 Bugzilla 139: Documentation and portability issues.
2524 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
2525 Handle per-OS dynamic-module compilation flags.
2526
fea24b2e
PP
2527PP/02 Let /dev/null have normal permissions.
2528 The 4.73 fixes were a little too stringent and complained about the
2529 permissions on /dev/null. Exempt it from some checks.
2530 Reported by Andreas M. Kirchwitz.
2531
6545de78
PP
2532PP/03 Report version information for many libraries, including
2533 Exim version information for dynamically loaded libraries. Created
2534 version.h, now support a version extension string for distributors
2535 who patch heavily. Dynamic module ABI change.
2536
1670ef10
PP
2537PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
2538 privilege escalation vulnerability whereby the Exim run-time user
2539 can cause root to append content of the attacker's choosing to
2540 arbitrary files.
2541
c0886197
PP
2542PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
2543 (Wolfgang Breyha)
2544
b7487bce
PP
2545PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
2546 If dropping privileges for untrusted macros, we disabled normal logging
2547 on the basis that it would fail; for the Exim run-time user, this is not
2548 the case, and it resulted in successful deliveries going unlogged.
2549 Fixed. Reported by Andreas Metzler.
2550
8c07b69f 2551
97fd1e48 2552Exim version 4.73
ed7f7860 2553-----------------
97fd1e48
PP
2554
2555PP/01 Date: & Message-Id: revert to normally being appended to a message,
2556 only prepend for the Resent-* case. Fixes regression introduced in
2557 Exim 4.70 by NM/22 for Bugzilla 607.
2558
6901c596
PP
2559PP/02 Include check_rfc2047_length in configure.default because we're seeing
2560 increasing numbers of administrators be bitten by this.
2561
a8c8d6b5
JJ
2562JJ/01 Added DISABLE_DKIM and comment to src/EDITME
2563
77bb000f
PP
2564PP/03 Bugzilla 994: added openssl_options main configuration option.
2565
a29e5231
PP
2566PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
2567
ec5a0394 2568PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
a29e5231 2569
55c75993
PP
2570PP/06 Adjust NTLM authentication to handle SASL Initial Response.
2571
453a6645 2572PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
ec5a0394
PP
2573 without a peer certificate, leading to a segfault because of an
2574 assumption that peers always have certificates. Be a little more
453a6645
PP
2575 paranoid. Problem reported by Martin Tscholak.
2576
8544e77a
PP
2577PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
2578 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
2579 NB: ClamAV planning to remove STREAM in "middle of 2010".
3346ab01
PP
2580 CL also introduces -bmalware, various -d+acl logging additions and
2581 more caution in buffer sizes.
8544e77a 2582
83e029d5
PP
2583PP/09 Implemented reverse_ip expansion operator.
2584
ed7f7860
PP
2585PP/10 Bugzilla 937: provide a "debug" ACL control.
2586
7d9f747b
PP
2587PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2588
4b2241d2
PP
2589PP/12 Bugzilla 973: Implement --version.
2590
10385c15
PP
2591PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2592
dbc4b90d
PP
2593PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2594
532be449
PP
2595PP/15 Bugzilla 816: support multiple condition rules on Routers.
2596
6a8de854 2597PP/16 Add bool_lax{} expansion operator and use that for combining multiple
71265ae9
PP
2598 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2599 ignore trailing whitespace.
6a8de854 2600
5dc43717
JJ
2601JJ/02 prevent non-panic DKIM error from being sent to paniclog
2602
2603JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2604 "exim" to be used
55c75993 2605
3346ab01
PP
2606PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2607 Notification from Dr Andrew Aitchison.
2608
491fab4c
PP
2609PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2610 ExtendedDetectionInfo response format.
2611 Notification from John Horne.
2612
13eb9497
PP
2613PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2614 compatible.
2615
2616PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2617 XSL and documented dependency on system catalogs, with examples of how
2618 it normally works.
2619
7f36d675
DW
2620DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2621 access.
2622
c1d94452
DW
2623DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2624 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2625 configuration file which is writeable by the Exim user or group.
2626
e2f5dc15
DW
2627DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2628 of configuration files to cover files specified with the -C option if
2629 they are going to be used with root privileges, not just the default
2630 configuration file.
2631
cd25e41d
DW
2632DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2633 option (effectively making it always true).
2634
261dc43e
DW
2635DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2636 files to be used while preserving root privileges.
2637
fa32850b
DW
2638DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2639 that rogue child processes cannot use them.
2640
79d4bc3d
PP
2641PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2642 run-time user, instead of root.
2643
43236f35 2644PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2cfd3221
PP
2645 Exim run-time user without dropping privileges.
2646
fb08281f
DW
2647DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2648 result string, instead of calling string_vformat() twice with the same
2649 arguments.
3346ab01 2650
74935b98
DW
2651DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2652 for other users. Others should always drop root privileges if they use
2653 -C on the command line, even for a whitelisted configure file.
2654
90b6341f
DW
2655DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2656
57730b52
ML
2657NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2658
66581d1e 2659
465e92cf
JJ
2660Exim version 4.72
2661-----------------
2662
453a6645
PP
2663JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2664 $data_path, and $header_path variables; fixed documentation bugs and
2665 typos
465e92cf 2666
453a6645
PP
2667JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2668 exipick to access non-standard spools, including the "frozen" queue
2669 (Finput)
edae0343 2670
9bd3e22c
NM
2671NM/01 Bugzilla 965: Support mysql stored procedures.
2672 Patch from Alain Williams
2673
bb576ff7
NM
2674NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2675
5a1a5845
NM
2676NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2677 Patch from Andreas Metzler
2678
981a9fad
NM
2679NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2680 Patch from Kirill Miazine
2681
7fc497ee
NM
2682NM/05 Bugzilla 671: Added umask to procmail example.
2683
1a41defa
JJ
2684JJ/03 installed exipick 20100323.0, fixing doc bug
2685
a466095c 2686NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
b26eacf1 2687 directory. Notification and patch from Dan Rosenberg.
a466095c 2688
94a6bd0b
NM
2689TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2690
2691TK/02 Improve log output when DKIM signing operation fails.
2692
2693MH/01 Treat the transport option dkim_domain as a colon separated
2694 list, not as a single string, and sign the message with each element,
2695 omitting multiple occurences of the same signer.
2696
c1b141a8
NM
2697NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2698 Bugzilla 985, 986. Patch by Simon Arlott
94a6bd0b 2699
b26eacf1 2700NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
0d0c6357
NM
2701 Patch by Simon Arlott
2702
179c5980 2703PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
b26eacf1 2704 MBX locking. Notification from Dan Rosenberg.
179c5980 2705
9bd3e22c 2706
7c6d71af
NM
2707Exim version 4.71
2708-----------------
2709
7d9f747b 2710TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
7c6d71af 2711
f013fb92
NM
2712NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2713
0eb8eedd
NM
2714NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2715
663ee6d9
NM
2716NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2717
177ebd9b
NM
2718NM/04 Bugzilla 915: Flag broken perl installation during build.
2719
7c6d71af 2720
210f147e
NM
2721Exim version 4.70
2722-----------------
2723
cdd3bb85 2724TK/01 Added patch by Johannes Berg that expands the main option
e739e3d9 2725 "spamd_address" if it starts with a dollar sign.
cdd3bb85
TK
2726
2727TK/02 Write list of recipients to X-Envelope-Sender header when building
2728 the mbox-format spool file for content scanning (suggested by Jakob
7d9f747b 2729 Hirsch).
cdd3bb85
TK
2730
2731TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2732 (http://www.dcc-servers.net/) support via dccifd. Activated by
e739e3d9 2733 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
cdd3bb85
TK
2734
2735TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2736 by Mark Daniel Reidel <mr@df.eu>.
2737
210f147e
NM
2738NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2739 When building exim an external PCRE library is now needed -
2740 PCRE is a system library on the majority of modern systems.
2741 See entry on PCRE_LIBS in EDITME file.
2742
deafd5b3
NM
2743NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2744 conversation. Added nologin parameter to request.
7d9f747b 2745 Patch contributed by Kirill Miazine.
deafd5b3 2746
089793a4
TF
2747TF/01 Do not log submission mode rewrites if they do not change the address.
2748
5f16ca82
TF
2749TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2750
dae9d94e 2751NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
7d9f747b 2752 log files in place. Contributed by Roberto Lima.
dae9d94e 2753
7d9f747b 2754NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
3f0da4d0 2755
06864c44
TF
2756TF/03 Bugzilla 615: When checking the local_parts router precondition
2757 after a local_part_suffix or local_part_prefix option, Exim now
2758 does not use the address's named list lookup cache, since this
2759 contains cached lookups for the whole local part.
2760
65a7d8c3 2761NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
7d9f747b 2762 Robert Millan. Documentation is in experimental-spec.txt.
65a7d8c3 2763
23510047 2764TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 2765
7d9f747b 2766NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
5f28a6e8 2767
7d8eec3a 2768NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
7d9f747b 2769 Patch provided by Jan Srzednicki.
6c588e74 2770
89dec7b6
TF
2771TF/05 Leading white space used to be stripped from $spam_report which
2772 wrecked the formatting. Now it is preserved.
5f28a6e8 2773
a99de90c
TF
2774TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2775 that they are available at delivery time.
2776
e2803e40
TF
2777TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2778
7199e1ee
TF
2779TF/08 TLS error reporting now respects the incoming_interface and
2780 incoming_port log selectors.
2781
e276e04b
TF
2782TF/09 Produce a more useful error message if an SMTP transport's hosts
2783 setting expands to an empty string.
2784
ce552449 2785NM/06 Bugzilla 744: EXPN did not work under TLS.
7d9f747b 2786 Patch provided by Phil Pennock.
ce552449 2787
e765a0f1 2788NM/07 Bugzilla 769: Extraneous comma in usage fprintf
7d9f747b 2789 Patch provided by Richard Godbee.
e765a0f1 2790
4f054c63 2791NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
447de4b0 2792 acl_smtp_notquit, added index entry.
4f054c63 2793
7d9f747b
PP
2794NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2795 Patch provided by Eugene Bujak.
24c929a2 2796
7d9f747b
PP
2797NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2798 accept(). Patch provided by Maxim Dounin.
cf73943b 2799
b52bc06e 2800NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
7d9f747b 2801 Patch provided by Phil Pennock.
b52bc06e 2802
447de4b0
NM
2803NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2804
4c69d561 2805NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
7d9f747b 2806 Patch provided by Brad "anomie" Jorsch.
4c69d561 2807
d5c39246 2808NM/14 Bugzilla 622: Added timeout setting to transport filter.
7d9f747b 2809 Patch provided by Dean Brooks.
9b989985 2810
0b23848a
TK
2811TK/05 Add native DKIM support (does not depend on external libraries).
2812
8f3414a1 2813NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
7d9f747b 2814 Patch provided by Graeme Fowler.
e2aacdfd 2815
fb6f955d
NM
2816NM/16 Bugzilla 851: Documentation example syntax fix.
2817
2818NM/17 Changed NOTICE file to remove references to embedded PCRE.
8f3414a1 2819
7d9f747b
PP
2820NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2821 lsearch.
dbb0bf41 2822
7d9f747b
PP
2823NM/19 Bugzilla 745: TLS version reporting.
2824 Patch provided by Phil Pennock.
f3766eb5 2825
7d9f747b
PP
2826NM/20 Bugzilla 167: bool: condition support.
2827 Patch provided by Phil Pennock.
36f12725 2828
7d9f747b
PP
2829NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2830 clients. Patch provided by Phil Pennock.
e6060e2c 2831
7d9f747b
PP
2832NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2833 Patch provided by Brad "anomie" Jorsch.
5eb690a1 2834
7d9f747b
PP
2835NM/23 Bugzilla 687: Fix misparses in eximstats.
2836 Patch provided by Heiko Schlittermann.
d5c13d66 2837
7d9f747b
PP
2838NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2839 Patch provided by Heiko Schlittermann.
b2335c0b 2840
7d9f747b 2841NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
1da77999 2842 plus update to original patch.
f4cd9433 2843
7d9f747b 2844NM/26 Bugzilla 799: Documentation correction for ratelimit.
dc988b7e 2845
7d9f747b
PP
2846NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2847 Patch provided by David Brownlee.
8dc71ab3 2848
7d9f747b 2849NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
400eda43 2850
7d9f747b 2851NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
ec5a421b 2852
7d9f747b 2853NM/30 Bugzilla 888: TLS documentation bugfixes.
07af267e 2854
7d9f747b 2855NM/31 Bugzilla 896: Dovecot buffer overrun fix.
51473862 2856
17792b53 2857NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
7d9f747b 2858 Unlike the original bugzilla I have changed all shell scripts in src tree.
17792b53 2859
7d9f747b
PP
2860NM/33 Bugzilla 898: Transport filter timeout fix.
2861 Patch by Todd Rinaldo.
52383f8f 2862
91576cec 2863NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
7d9f747b 2864 Patch by Serge Demonchaux.
5ca6d115 2865
7d9f747b
PP
2866NM/35 Bugzilla 39: Base64 decode bug fixes.
2867 Patch by Jakob Hirsch.
baee9eee 2868
7d9f747b 2869NM/36 Bugzilla 909: Correct connect() call in dcc code.
e93a964c 2870
7d9f747b 2871NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
9bf3d68f 2872
7d9f747b 2873NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
96535b98 2874
7d9f747b 2875NM/39 Bugzilla 911: Fixed MakeLinks build script.
30339e0f 2876
deafd5b3 2877
47db1125
NM
2878Exim version 4.69
2879-----------------
2880
4b3504d0
TK
2881TK/01 Add preliminary DKIM support. Currently requires a forked version of
2882 ALT-N's libdkim that I have put here:
2883 http://duncanthrax.net/exim-experimental/
2884
2885 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2886 were called 'true' and it seems that C99 defines that as a reserved
2887 keyword to be used with 'bool' variable types. That means you could
2888 not include C99-style headers which use bools without triggering
2889 build errors in sieve.c.
2890
81ea09ca
NM
2891NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2892 as mailq or other aliases. Changed the --help handling significantly
2893 to do whats expected. exim_usage() emits usage/help information.
2894
f13cddcb
SC
2895SC/01 Added the -bylocaldomain option to eximstats.
2896
7d9f747b 2897NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
8ad076b2 2898
7d9f747b 2899NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
a843aaa6 2900
7d9f747b 2901NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
47db1125
NM
2902
2903
eb4c0de6
PH
2904Exim version 4.68
2905-----------------
2906
2907PH/01 Another patch from the Sieve maintainer.
2908
6a3bceb1
PH
2909PH/02 When an IPv6 address is converted to a string for single-key lookup
2910 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2911 dots are used instead of colons so that keys in lsearch files need not
2912 contain colons. This was done some time before quoting was made available
2913 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2914 (notated using the quote facility) so as to distinguish them from IPv4
2915 keys. This meant that lookups for IP addresses in host lists did not work
2916 for iplsearch lookups.
2917
2918 This has been fixed by arranging for IPv6 addresses to be expressed with
2919 colons if the lookup type is iplsearch. This is not incompatible, because
2920 previously such lookups could never work.
2921
4c04137d 2922 The situation is now rather anomalous, since one *can* have colons in
6a3bceb1
PH
2923 ordinary lsearch keys. However, making the change in all cases is
2924 incompatible and would probably break a number of configurations.
2925
2e30fa9d
TK
2926TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2927 version.
2928
0806a9c5
MH
2929MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2930 conversion specification without a maximum field width, thereby enabling
2931 a rogue spamd server to cause a buffer overflow. While nobody in their
2932 right mind would setup Exim to query an untrusted spamd server, an
2933 attacker that gains access to a server running spamd could potentially
2934 exploit this vulnerability to run arbitrary code as the Exim user.
2935
ae276964
TK
2936TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2937 $primary_hostname instead of what libspf2 thinks the hosts name is.
2938
0f2cbd1b
MH
2939MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2940 a directory entry by the name of the lookup key. Previously, if a
2941 symlink pointed to a non-existing file or a file in a directory that
2942 Exim lacked permissions to read, a lookup for a key matching that
2943 symlink would fail. Now it is enough that a matching directory entry
2944 exists, symlink or not. (Bugzilla 503.)
2945
2b85bce7
PH
2946PH/03 The body_linecount and body_zerocount variables are now exported in the
2947 local_scan API.
2948
93655c46
PH
2949PH/04 Added the $dnslist_matched variable.
2950
6c512171
PH
2951PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2952 This means they are set thereafter only if the connection becomes
2953 encrypted.
2954
2955PH/06 Added the client_condition to authenticators so that some can be skipped
2956 by clients under certain conditions.
2957
aa6dc513
PH
2958PH/07 The error message for a badly-placed control=no_multiline_responses left
2959 "_responses" off the end of the name.
2960
a96603a0
PH
2961PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2962
8f240103
PH
2963PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2964 (without spaces) instead of just copying the configuration text.
2965
2966PH/10 Added the /noupdate option to the ratelimit ACL condition.
2967
d677b2f2
PH
2968PH/11 Added $max_received_linelength.
2969
d52120f2
PH
2970PH/12 Added +ignore_defer and +include_defer to host lists.
2971
64f2600a
PH
2972PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2973 way in which PCRE > 7.0 is built.
2974
8669f003
PH
2975PH/14 Implemented queue_only_load_latch.
2976
a4dc33a8
PH
2977PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2978 MAIL command. The effect was to mangle the value on 64-bit systems.
2979
d6a60c0f
PH
2980PH/16 Another patch from the Sieve maintainer.
2981
8f128379
PH
2982PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2983
8932dffe
PH
2984PH/18 If a system quota error occurred while trying to create the file for
2985 a maildir delivery, the message "Mailbox is full" was not appended to the
2986 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2987 only to a quota excession during the actual writing of the file.
d6a60c0f 2988
ddea74fa 2989PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
2990 characters?) which causes problems in log lines. The DN values are now
2991 passed through string_printing() before being added to log lines.
2992
ddea74fa 2993PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
2994 and InterBase are left for another time.)
2995
ddea74fa
PH
2996PH/21 Added message_body_newlines option.
2997
ce9f225c
PH
2998PH/22 Guard against possible overflow in moan_check_errorcopy().
2999
19897d52
PH
3000PH/23 POSIX allows open() to be a macro; guard against that.
3001
bc64a74d
PH
3002PH/24 If the recipient of an error message contained an @ in the local part
3003 (suitably quoted, of course), incorrect values were put in $domain and
3004 $local_part during the evaluation of errors_copy.
3005
eb4c0de6 3006
b4ed4da0
PH
3007Exim version 4.67
3008-----------------
3009
22ad45c9
MH
3010MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
3011 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
3012 Jan Srzednicki.
3013
b4ed4da0
PH
3014PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
3015 issue a MAIL command.
3016
431b7361
PH
3017PH/02 In an ACL statement such as
3018
3019 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
3020
3021 if a client was not listed at all, or was listed with a value other than
3022 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
3023 the condition was not true (as it should be), so access was not denied.
3024 The bug was that the ! inversion was incorrectly passed on to the second
3025 item. This has been fixed.
3026
3027PH/03 Added additional dnslists conditions == and =& which are different from
3028 = and & when the dns lookup returns more than one IP address.
3029
83da1223
PH
3030PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
3031 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
3032
54fc8428
PH
3033PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
3034 FSYNC, which compiles an option called disable_fsync that allows for
3035 bypassing fsync(). The documentation is heavily laced with warnings.
3036
34c5e8dd
SC
3037SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
3038
bbe15da8
PH
3039PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
3040 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
3041 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
3042 including adding "make clean"; (3) Added -fPIC when compiling the test
3043 dynamically loaded module, to get rid of a warning.
3044
0e8a9471
MH
3045MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
3046 message fails, move_frozen_messages = true and ignore_bounce_errors_after
3047 = 0s. The bug is otherwise harmless.
3048
f0872424
PH
3049PH/07 There was a bug in the dovecot authenticator such that the value of
3050 $auth1 could be overwritten, and so not correctly preserved, after a
3051 successful authentication. This usually meant that the value preserved by
3052 the server_setid option was incorrect.
3053
b01dd148
PH
3054PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
3055
6bf342e1
PH
3056PH/09 Installed PCRE release 7.0.
3057
273f34d0
PH
3058PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
3059 run for batched SMTP input. It is now run at the start of every message
3060 in the batch. While fixing this I discovered that the process information
3061 (output by running exiwhat) was not always getting set for -bs and -bS
3062 input. This is fixed, and it now also says "batched" for BSMTP.
3063
cf8b11a5
PH
3064PH/11 Added control=no_pipelining.
3065
41c7c167
PH
3066PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
3067 patch, slightly modified), and move the expansion of helo_data till after
3068 the connection is made in the smtp transport (so it can use these
3069 values).
3070
9c57cbc0
PH
3071PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
3072
f3f065bb
PH
3073PH/14 Added log_selector = +pid.
3074
047bdd8c
PH
3075PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
3076
0ce9abe6
PH
3077PH/16 Add ${if forany and ${if forall.
3078
0e22dfd1
PH
3079PH/17 Added dsn_from option to vary the From: line in DSNs.
3080
4c590bd1
PH
3081PH/18 Flush SMTP output before performing a callout, unless control =
3082 no_callout_flush is set.
3083
09945f1e
PH
3084PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
3085 was true (the default) a successful delivery failed to delete the retry
3086 item, thus causing premature timeout of the address. The bug is now
3087 fixed.
3088
c51b8e75
PH
3089PH/20 Added hosts_avoid_pipelining to the smtp transport.
3090
e28326d8 3091PH/21 Long custom messages for fakedefer and fakereject are now split up
4c04137d 3092 into multiline responses in the same way that messages for "deny" and
e28326d8
PH
3093 other ACL rejections are.
3094
75b1493f
PH
3095PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
3096 with slight modification.
3097
7c5214ec
PH
3098PH/23 Applied sieve patches from the maintainer "tracking the latest notify
3099 draft, changing the syntax and factoring some duplicate code".
3100
4311097e
PH
3101PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
3102 for deliveries of the second and subsequent messages over the same SMTP
3103 connection.
3104
29f89cad
PH
3105PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
3106 ${reduce, with only minor "tidies".
3107
5e687460
SC
3108SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
3109
c3611384
PH
3110PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
3111 expansion side effects.
3112
5a11a7b4
PH
3113PH/27 When a message times out after an over-quota error from an Exim-imposed
3114 quota, the bounce message says "mailbox is full". This message was not
3115 being given when it was a system quota that was exceeded. It now should
3116 be the same.
3117
0e20aff9
MH
3118MH/03 Made $recipients available in local_scan(). local_scan() already has
3119 better access to the recipient list through recipients_list[], but
3120 $recipients can be useful in postmaster-provided expansion strings.
3121
ca86f471
PH
3122PH/28 The $smtp_command and $smtp_command_argument variables were not correct
3123 in the case of a MAIL command with additional options following the
3124 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
3125 were accidentally chopped off.
3126
a14e5636
PH
3127PH/29 SMTP synchronization checks are implemented when a command is read -
3128 there is a check that no more input is waiting when there shouldn't be
3129 any. However, for some commands, a delay in an ACL can mean that it is
3130 some time before the response is written. In this time, more input might
3131 arrive, invalidly. So now there are extra checks after an ACL has run for
3132 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
3133 pipelining has not been advertised.
3134
ec95d1a6
PH
3135PH/30 MH's patch to allow iscntrl() characters to be list separators.
3136
42855d71
PH
3137PH/31 Unlike :fail:, a custom message specified with :defer: was not being
3138 returned in the SMTP response when smtp_return_error_details was false.
3139 This has been fixed.
3140
57c2c631
PH
3141PH/32 Change the Dovecot authenticator to use read() and write() on the socket
3142 instead of the C I/O that was originally supplied, because problems were
3143 reported on Solaris.
3144
58c01c94
PH
3145PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
3146 Exim which did not show up earlier: it was assuming that a call to
3147 SSL_CTX_set_info_callback() might give an error value. In fact, there is
3148 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
3149 was a macro that became an assignment, so it seemed to work. This has
3150 changed to a proper function call with a void return, hence the compile
3151 error. Exim's code has been fixed.
3152
dee5a20a
PH
3153PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
3154 cpus.
3155
d2ee6114
PH
3156PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
3157
b2d5182b
PH
3158PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
3159
79749a79
PH
3160PH/37 If a message is not accepted after it has had an id assigned (e.g.
3161 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
3162 "Completed" line in the log. When some messages of this type were
3163 selected by exigrep, they were listed as "not completed". Others were
3164 picked up by some special patterns. I have improved the selection
3165 criteria to be more general.
79749a79 3166
c456d9bb
PH
3167PH/38 The host_find_failed option in the manualroute router can now be set
3168 to "ignore", to completely ignore a host whose IP address cannot be
3169 found. If all hosts are ignored, the behaviour is controlled by the new
3170 host_all_ignored option.
3171
cd9868ec
PH
3172PH/39 In a list of hosts for manualroute, if one item (either because of multi-
3173 homing or because of multiple MX records with /mx) generated more than
3174 one IP address, and the following item turned out to be the local host,
3175 all the secondary addresses of the first item were incorrectly removed
3176 from the list, along with the local host and any following hosts (which
3177 is what is supposed to happen).
3178
ebeaf996
PH
3179PH/40 When Exim receives a message, it writes the login name, uid, and gid of
3180 whoever called Exim into the -H file. In the case of the daemon it was
3181 behaving confusingly. When first started, it used values for whoever
3182 started the daemon, but after a SIGHUP it used the Exim user (because it
3183 calls itself on a restart). I have changed the code so that it now always
3184 uses the Exim user.
3185
2679d413
PH
3186PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
3187 message are rejected with the same error (e.g. no authentication or bad
3188 sender address), and a DATA command is nevertheless sent (as can happen
3189 with PIPELINING or a stupid MUA), the error message that was given to the
3190 RCPT commands is included in the rejection of the DATA command. This is
3191 intended to be helpful for MUAs that show only the final error to their
3192 users.
3193
84024b72
PH
3194PH/42 Another patch from the Sieve maintainer.
3195
8005d38e
SC
3196SC/02 Eximstats - Differentiate between permanent and temporary rejects.
3197 Eximstats - Fixed some broken HTML links and added missing column headers
3198 (Jez Hancock).
3199 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
3200 columns for Rejects, Temp Rejects, Ham, and Spam rows.
3201
3298c6c6
SC
3202SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
3203
a43a27c5
PH
3204PH/43 Yet another patch from the Sieve maintainer.
3205
58eb016e 3206PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
3207 the response to the final '.' that terminates a message, but only in the
3208 case where the client has not sent further data following the '.'
3209 (unfortunately, this is allowed). However, in many cases there won't be
3210 any further data because there won't be any more messages to send. A call
3211 to select() can be used: if it shows that the input is "ready", there is
3212 either input waiting, or the socket has been closed. An attempt to read
3213 the next input character can distinguish the two cases. Previously, Exim
58eb016e 3214 would have sent an OK response which the client would never have see.
563b63fa
PH
3215 This could lead to message repetition. This fix should cure that, at
3216 least in a lot of common cases.
58eb016e 3217
b43a74ea
PH
3218PH/45 Do not advertise STARTTLS in response to HELP unless it would be
3219 advertised in response to EHLO.
3220
b4ed4da0 3221
5dd1517f
PH
3222Exim version 4.66
3223-----------------
3224
3225PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
3226 fixed by 4.65/MH/01 (is this a record?) are fixed: