Fix memory leak during multi-message reception using STARTTLS
[exim.git] / doc / doc-txt / ChangeLog
1 Change log file for Exim from version 4.21
2 ------------------------------------------
3 This document describes *changes* to previous versions, that might
4 affect Exim's operation, with an unchanged configuration file. For new
5 options, and new features, see the NewStuff file next to this ChangeLog.
6
7
8 Since Exim version 4.90
9 -----------------------
10
11 JH/01 Replace the store_release() internal interface with store_newblock(),
12 which internalises the check required to safely use the old one, plus
13 the allocate and data copy operations duplicated in both (!) of the
14 extant use locations.
15
16 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
17 modifier. This matches the restriction on the commandline.
18
19 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
20 Previously only the last row was returned.
21
22 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
23 we assumed that tags in the header were well-formed, and parsed the
24 element content after inspecting only the first char of the tag.
25 Assumptions at that stage could crash the receive process on malformed
26 input.
27
28 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
29 While running the DKIM ACL we operate on the Permanent memory pool so that
30 variables created with "set" persist to the DATA ACL. Also (at any time)
31 DNS lookups that fail create cache records using the Permanent pool. But
32 expansions release any allocations made on the current pool - so a dnsdb
33 lookup expansion done in the DKIM ACL releases the memory used for the
34 DNS negative-cache, and bad things result. Solution is to switch to the
35 Main pool for expansions.
36 While we're in that code, add checks on the DNS cache during store_reset,
37 active in the testsuite.
38 Problem spotted, and debugging aided, by Wolfgang Breyha.
39
40 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
41 When none of the hosts presented to a transport match an already-open
42 connection, close it and proceed with the list. Previously we would
43 queue the message. Spotted by Lena with Yahoo, probably involving
44 round-robin DNS.
45
46 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
47 Previously a spurious "250 OK id=" response was appended to the proper
48 failure response.
49
50 JH/08 The "support for" informational output now, which built with Content
51 Scanning support, has a line for the malware scanner interfaces compiled
52 in. Interface can be individually included or not at build time.
53
54 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
55 by the template makefile "src/EDITME". The "STREAM" support for an older
56 ClamAV interface method is removed.
57
58 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
59 rows affected is given instead).
60
61 JH/11 The runtime Berkeley DB library version is now additionally output by
62 "exim -d -bV". Previously only the compile-time version was shown.
63
64 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
65 SMTP connection. Previously, when one had more receipients than the
66 first, an abortive onward connection was made. Move to full support for
67 multiple onward connections in sequence, handling cutthrough connection
68 for all multi-message initiating connections.
69
70 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
71 routers. Previously, a multi-recipient message would fail to match the
72 onward-connection opened for the first recipient, and cause its closure.
73
74 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
75 a timeout on read on a GnuTLS initiating connection, resulting in the
76 initiating connection being dropped. This mattered most when the callout
77 was marked defer_ok. Fix to keep the two timeout-detection methods
78 separate.
79
80 JH/15 Relax results from ACL control request to enable cutthrough, in
81 unsupported situations, from error to silently (except under debug)
82 ignoring. This covers use with PRDR, frozen messages, queue-only and
83 fake-reject.
84
85 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
86
87 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
88 metadata, resulting in a crash in free().
89
90 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
91 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
92 Broken also in d185889f4, with init system revamp.
93
94 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
95 Previously we abruptly closed the connection after reading a malware-
96 found indication; now we go on to read the "scan ok" response line,
97 and send a quit.
98
99 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
100 ACL. Previously, a crash would result.
101
102 JH/19 Speed up macro lookups during configuration file read, by skipping non-
103 macro text after a replacement (previously it was only once per line) and
104 by skipping builtin macros when searching for an uppercase lead character.
105
106 JH/20 DANE support moved from Experimental to mainline. The Makefile control
107 for the build is renamed.
108
109 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
110 was allocated for every new TLS startup, meaning one per message. Fix
111 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
112
113
114 Exim version 4.90
115 -----------------
116
117 JH/01 Rework error string handling in TLS interface so that the caller in
118 more cases is responsible for logging. This permits library-sourced
119 string to be attached to addresses during delivery, and collapses
120 pairs of long lines into single ones.
121
122 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
123 during configuration. Wildcards are allowed and expanded.
124
125 JH/02 Rework error string handling in DKIM to pass more info back to callers.
126 This permits better logging.
127
128 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
129 do not close it down and have the child transport start it up again on
130 the passed-on TCP connection. Instead, proxy the child (and any
131 subsequent ones) for TLS via a unix-domain socket channel. Logging is
132 affected: the continued delivery log lines do not have any DNSSEC, TLS
133 Certificate or OCSP information. TLS cipher information is still logged.
134
135 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
136 identical IP addresses on different listening ports. Will also affect
137 "exiwhat" output.
138
139 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
140 add noisy ifdef guards to special-case this sillyness.
141 Patch from Bernd Kuhls.
142
143 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
144 than 255 are no longer allowed.
145
146 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
147 Disable the session-cache too, which might reduce our load. Since we
148 currrectly use a new context for every connection, both as server and
149 client, there is no benefit for these.
150 GnuTLS appears to not support tickets server-side by default (we don't
151 call gnutls_session_ticket_enable_server()) but client side is enabled
152 by default on recent versions (3.1.3 +) unless the PFS priority string
153 is used (3.2.4 +).
154
155 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
156 <https://reproducible-builds.org/specs/source-date-epoch/>.
157
158 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
159 the check for any unsuccessful recipients did not notice the limit, and
160 erroneously found still-pending ones.
161
162 JH/08 Pipeline CHUNKING command and data together, on kernels that support
163 MSG_MORE. Only in-clear (not on TLS connections).
164
165 JH/09 Avoid using a temporary file during transport using dkim. Unless a
166 transport-filter is involved we can buffer the headers in memory for
167 creating the signature, and read the spool data file once for the
168 signature and again for transmission.
169
170 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
171 4.77 as the kernel support then wasn't solid, having issues in 64bit
172 mode. Now, it's been long enough. Add support for FreeBSD also.
173
174 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
175 case where the routing stage had gathered several addresses to send to
176 a host before calling the transport for the first, we previously failed
177 to close down TLS in the old transport process before passing the TCP
178 connection to the new process. The new one sent a STARTTLS command
179 which naturally failed, giving a failed delivery and bloating the retry
180 database. Investigation and fix prototype from Wolfgang Breyha.
181
182 JH/12 Fix check on SMTP command input synchronisation. Previously there were
183 false-negatives in the check that the sender had not preempted a response
184 or prompt from Exim (running as a server), due to that code's lack of
185 awareness of the SMTP input buffering.
186
187 PP/04 Add commandline_checks_require_admin option.
188 Exim drops privileges sanely, various checks such as -be aren't a
189 security problem, as long as you trust local users with access to their
190 own account. When invoked by services which pass untrusted data to
191 Exim, this might be an issue. Set this option in main configuration
192 AND make fixes to the calling application, such as using `--` to stop
193 processing options.
194
195 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
196 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
197 responses to those, into a single TLS record each way (this usually means
198 a single packet). As a side issue, smtp_enforce_sync now works on TLS
199 connections.
200
201 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
202 affects you only if you're dancing at the edge of the param size limits.
203 If you are, and this message makes sense to you, then: raise the
204 configured limit or use OpenSSL 1.1. Nothing we can do for older
205 versions.
206
207 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
208 cmdline element to get the documented default one. Previously it was
209 inaccessible.
210
211 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
212 are unsuable for non-message-specific reasons - eg. connection timeout,
213 banner-time rejection.
214
215 JH/16 Fix logging of delivery remote port, when specified by router, under
216 callout/hold.
217
218 PP/06 Repair manualroute's ability to take options in any order, even if one
219 is the name of a transport.
220 Fixes bug 2140.
221
222 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
223
224 JH/17 Change the list-building routines interface to use the expanding-string
225 triplet model, for better allocation and copying behaviour.
226
227 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
228 Previously it was constructed the first time a possibly-matching string
229 was met in the configuration file input during startup; now it is done
230 during compilation.
231
232 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
233 compatible one, to avoid the (poorly documented) possibility of a config
234 file in the working directory redirecting the DB files, possibly correpting
235 some existing file. CVE-2017-10140 assigned for BDB.
236
237 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
238 cache-hot. Previously, although the result was properly cached, the
239 initial verify call returned a defer.
240
241 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
242 the main verify for receipient in uncached-mode.
243
244 JH/22 Retire historical build files to an "unsupported" subdir. These are
245 defined as "ones for which we have no current evidence of testing".
246
247 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
248 if present. Previously it was ignored.
249
250 JH/24 Start using specified-initialisers in C structure init coding. This is
251 a C99 feature (it's 2017, so now considered safe).
252
253 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
254 if was a fixed-sized field and bitmask ops via macros; it is now more
255 extensible.
256
257 PP/07 GitHub PR 56: Apply MariaDB build fix.
258 Patch provided by Jaroslav Škarvada.
259
260 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
261 during Coverity cleanups [4.87 JH/47]
262 Diagnosis and fix provided by Michael Fischer v. Mollard.
263
264 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
265 the right size to place the terminating semicolon on its own folded
266 line, the header hash was calculated to an incorrect value thanks to
267 the (relaxed) space the fold became.
268
269 HS/02 Fix Bug 2130: large writes from the transport subprocess where chunked
270 and confused the parent.
271
272 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
273 which could crash as a result. This could lead to undeliverable messages.
274
275 JH/28 Logging: "next input sent too soon" now shows where input was truncated
276 for log purposes.
277
278 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
279 matters on fast-turnover and PID-randomising systems, which were getting
280 out-of-order delivery.
281
282 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
283 a possibly-overlapping copy. The symptom was that "Remote host closed
284 connection in response to HELO" was logged instead of the actual 4xx
285 error for the HELO.
286
287 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
288 Previously only that bufferd was discarded, resulting in SYMTP command
289 desynchronisation.
290
291 JH/32 DKIM: when a message has multiple signatures matching an identity given
292 in dkim_verify_signers, run the dkim acl once for each. Previously only
293 one run was done. Bug 2189.
294
295 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
296 "panic the current process" to "deliberately defer". The panic log is
297 still written with the problem list name; the mail and reject logs now
298 get a temp-reject line for the message that was being handled, saying
299 something like "domains check lookup or other defer". The SMTP 451
300 message is still "Temporary local problem".
301
302 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
303 A crafted sequence of BDAT commands could result in in-use memory beeing
304 freed. CVE-2017-16943.
305
306 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
307 from SMTP input. Previously it was always done; now only done for DATA
308 and not BDAT commands. CVE-2017-16944.
309
310 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
311 to the message (such as an overlong header line). Previously this was
312 not done and we did not exit BDAT mode. Followon from the previous item
313 though a different problem.
314
315
316 Exim version 4.89
317 -----------------
318
319 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
320 than -2003 did; needs libidn2 in addition to libidn.
321
322 JH/02 The path option on a pipe transport is now expanded before use.
323
324 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
325 Patch provided by "Björn", documentation fix added too.
326
327 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
328 missing a wire-to-host endian conversion.
329
330 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
331 close after a BDAT command line could be taken as a following command,
332 giving a synch failure. Fix by only checking for synch immediately
333 before acknowledging the chunk.
334
335 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
336 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
337 macro. Patches provided by Josh Soref.
338
339 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
340 Previously we did not; the RFC seems ambiguous and VRFY is not listed
341 by IANA as a service extension. However, John Klensin suggests that we
342 should.
343
344 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
345 the dkim code may be unix-mode line endings rather than smtp wire-format
346 CRLF, so prepend a CR to any bare LF.
347
348 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
349 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
350
351 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
352 the first were themselves being wrongly included in the feed into dkim
353 processing; with most chunk sizes in use this resulted in an incorrect
354 body hash calculated value.
355
356 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
357 DKIM signature block, for verification. Although advised against by
358 standards it is specifically not ruled illegal.
359
360 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
361
362 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
363 missing a body hash (the bh= tag).
364
365 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
366 It seems that HAProxy sends the Proxy Protocol information in clear and
367 only then does a TLS startup, so do the same.
368
369 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
370 TCP connections (such as for Spamd) unless the daemon successfully set
371 Fast Open mode on its listening sockets. This fixes breakage seen on
372 too-old kernels or those not configured for Fast Open, at the cost of
373 requiring both directions being enabled for TFO, and TFO never being used
374 by non-daemon-related Exim processes.
375
376 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
377 endings, at least on the first header line. Try to canonify any that get
378 past that check, despite the cost.
379
380 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
381 now limited to an arbitrary five deep, while parsing addresses with the
382 strip_excess_angle_brackets option enabled.
383
384 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
385 instead leave the unprompted TLS handshake in socket buffer for the
386 TLS library to consume.
387
388 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
389
390 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
391
392 JH/16 Drop variables when they go out of scope. Memory management drops a whole
393 region in one operation, for speed, and this leaves assigned pointers
394 dangling. Add checks run only under the testsuite which checks all
395 variables at a store-reset and panics on a dangling pointer; add code
396 explicitly nulling out all the variables discovered. Fixes one known
397 bug: a transport crash, where a dangling pointer for $sending_ip_address
398 originally assigned in a verify callout, is re-used.
399
400 PP/06 Drop '.' from @INC in various Perl scripts.
401
402 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
403
404 PP/08 Reduce a number of compilation warnings under clang; building with
405 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
406 should be warning-free.
407
408 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
409
410 HS/01 Fix portability problems introduced by PP/08 for platforms where
411 realloc(NULL) is not equivalent to malloc() [SunOS et al].
412
413 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
414 chunk. This allows us to accept broken chunked messages. We need a more
415 general solution here.
416
417 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
418 already-broken messages in the queue.
419
420 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
421
422 JH/19 Fix reference counting bug in routing-generated-address tracking.
423
424
425 Exim version 4.88
426 -----------------
427
428 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
429 supports it and a size is available (ie. the sending peer gave us one).
430
431 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
432 years of being deprecated). The replacements are the ACLs
433 acl_smtp_mime and acl_not_smtp_mime.
434
435 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
436 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
437 or even an in-clear connection were permitted. Now, if the host lookup
438 was dnssec and dane was requested then the host is only used if the
439 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
440 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
441 if one fails this test.
442 This means that a poorly-configured remote DNS will make it incommunicado;
443 but it protects against a DNS-interception attack on it.
444
445 JH/04 Bug 1810: make continued-use of an open smtp transport connection
446 non-noisy when a race steals the message being considered.
447
448 JH/05 If main configuration option tls_certificate is unset, generate a
449 self-signed certificate for inbound TLS connections.
450
451 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
452 in rewrites and routers.
453
454 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
455 and logged a warning sing 4.83; now they are a configuration file error.
456
457 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
458 (lacking @domain). Apply the same qualification processing as RCPT.
459
460 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
461
462 JH/10 Support ${sha256:} applied to a string (as well as the previous
463 certificate).
464
465 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
466 a cutthrough deliver is pending, as we always want to make a connection.
467 This also avoids re-routing the message when later placing the cutthrough
468 connection after a verify cache hit.
469 Do not update it with the verify result either.
470
471 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
472 when routing results in more than one destination address.
473
474 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
475 signing (which inhibits the cutthrough capability). Previously only
476 the presence of an option was tested; now an expansion evaluating as
477 empty is permissible (obviously it should depend only on data available
478 when the cutthrough connection is made).
479
480 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
481 the relevant preceding SMTP command did not note the pipelining mode.
482
483 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
484 Previously they were not counted.
485
486 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
487 as one having no matching records. Previously we deferred the message
488 that needed the lookup.
489
490 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
491 distinguished as "(=".
492
493 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
494 for missing MX records. Previously it only worked for missing A records.
495
496 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
497
498 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
499 after the data-go-ahead and data-ack. Patch from Jason Betts.
500
501 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
502 even for a "none" policy. Patch from Tony Meyer.
503
504 JH/22 Fix continued use of a connection for further deliveries. If a port was
505 specified by a router, it must also match for the delivery to be
506 compatible.
507
508 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
509 When one of the recipients of a message was unsuitable for the connection
510 (has no matching addresses), we lost track of needing to mark it
511 deferred. As a result mail would be lost.
512
513 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
514
515 JH/25 Decoding ACL controls is now done using a binary search; the source code
516 takes up less space and should be simpler to maintain. Merge the ACL
517 condition decode tables also, with similar effect.
518
519 JH/26 Fix problem with one_time used on a redirect router which returned the
520 parent address unchanged. A retry would see the parent address marked as
521 delivered, so not attempt the (identical) child. As a result mail would
522 be lost.
523
524 JH/27 Fix a possible security hole, wherein a process operating with the Exim
525 UID can gain a root shell. Credit to http://www.halfdog.net/ for
526 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
527 itself :(
528
529 JH/28 Enable {spool,log} filesystem space and inode checks as default.
530 Main config options check_{log,spool}_{inodes,space} are now
531 100 inodes, 10MB unless set otherwise in the configuration.
532
533 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
534 Previously it only applied to the main-section connection policy
535 options.
536
537 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
538
539 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
540 by me. Added RFC7919 DH primes as an alternative.
541
542 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
543 are not in the system include path.
544
545 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
546 GnuTLS, when a session startup failed (eg because the client disconnected)
547 Exim did stdio operations after fclose. This was exposed by a recent
548 change which nulled out the file handle after the fclose.
549
550 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
551 signed directly by the cert-signing cert, rather than an intermediate
552 OCSP-signing cert. This is the model used by LetsEncrypt.
553
554 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
555
556 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
557 an incoming connection.
558
559 HS/02 Bug 1802: Do not half-close the connection after sending a request
560 to rspamd.
561
562 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
563 fallback to "prime256v1".
564
565 JH/34 SECURITY: Use proper copy of DATA command in error message.
566 Could leak key material. Remotely exploitable. CVE-2016-9963.
567
568
569 Exim version 4.87
570 -----------------
571
572 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
573 and 3.4.4 - once the server is enabled to respond to an OCSP request
574 it does even when not requested, resulting in a stapling non-aware
575 client dropping the TLS connection.
576
577 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
578 support variable-length bit vectors. No functional change.
579
580 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
581 The I= interface field on outgoing lines is now after the H= remote
582 host field, same as incoming lines. There is a separate
583 outgoing_interface log selector which allows you to disable the
584 outgoing I= field.
585
586 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
587 If not running log_selector +smtp_connection the mainlog would be held
588 open indefinitely after a "too many connections" event, including to a
589 deleted file after a log rotate. Leave the per net connection logging
590 leaving it open for efficiency as that will be quickly detected by the
591 check on the next write.
592
593 HS/01 Bug 1671: Fix post transport crash.
594 Processing the wait-<transport> messages could crash the delivery
595 process if the message IDs didn't exist for some reason. When
596 using 'split_spool_directory=yes' the construction of the spool
597 file name failed already, exposing the same netto behaviour.
598
599 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
600 mime_regex ACL conditions.
601
602 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
603 to DSN fail messages (bounces): remote IP, remote greeting, remote response
604 to HELO, local diagnostic string.
605
606 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
607 log line to debug. Even when configured with a tls authenticator many
608 client connections are expected to not authenticate in this way, so
609 an authenticate fail is not an error.
610
611 HS/02 Add the Exim version string to the process info. This way exiwhat
612 gives some more detail about the running daemon.
613
614 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
615 matter for fast-change records such as DNSBLs.
616
617 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
618 retry record, even if constant. There may be multiple transports with
619 different interface settings and the retry behaviour needs to be kept
620 distinct.
621
622 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
623
624 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
625
626 JH/10 Bug 840: fix log_defer_output option of pipe transport
627
628 JH/11 Bug 830: use same host for all RCPTS of a message, even under
629 hosts_randomize. This matters a lot when combined with mua_wrapper.
630
631 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
632 ${quote_pgsql:<string>} operator.
633
634 JH/13 Bug 1708: avoid misaligned access in cached lookup.
635
636 JH/14 Change header file name for freeradius-client. Relevant if compiling
637 with Radius support; from the Gentoo tree and checked under Fedora.
638
639 JH/15 Bug 1712: Introduce $prdr_requested flag variable
640
641 JH/16 Bug 1714: Permit an empty string as expansion result for transport
642 option transport_filter, meaning no filtering.
643
644 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
645
646 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
647 defaults to "*" (all hosts). The variable is now available when not built
648 with TLS, default unset, mainly to enable keeping the testsuite sane.
649 If a server certificate is not supplied (via tls_certificate) an error is
650 logged, and clients will find TLS connections fail on startup. Presumably
651 they will retry in-clear.
652 Packagers of Exim are strongly encouraged to create a server certificate
653 at installation time.
654
655 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
656 with the $config_file variable.
657
658 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
659 in transport context, after the attempt, and per-recipient. The latter type
660 is per host attempted. The event data is the error message, and the errno
661 information encodes the lookup type (A vs. MX) used for the (first) host,
662 and the trailing two digits of the smtp 4xx response.
663
664 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
665 to write to mainlog (or rejectlog, paniclog) in the window between file
666 creation and permissions/ownership being changed. Particularly affects
667 installations where exicyclog is run as root, rather than exim user;
668 result is that the running daemon panics and dies.
669
670 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
671
672 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
673 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
674 "pri" and "weight". Note that the previous implicit priority given by the
675 list order is no longer honoured.
676
677 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
678 for DKIM processing.
679
680 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
681 by defining SUPPORT_SOCKS.
682
683 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
684 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
685 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
686 variables are renamed to proxy_{local,external}_{address,port}.
687
688 JH/27 Move Internationalisation support from Experimental to mainline, enabled
689 for a build by defining SUPPORT_I18N
690
691 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
692 of the query string, and make ${quote_redis:} do that quoting.
693
694 JH/29 Move Events support from Experimental to mainline, enabled by default
695 and removable for a build by defining DISABLE_EVENT.
696
697 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
698
699 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
700 cached by the daemon.
701
702 JH/32 Move Redis support from Experimental to mainline, enabled for a build
703 by defining LOOKUP_REDIS. The libhiredis library is required.
704
705 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
706 keys are given for lookup.
707
708 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
709 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
710 only supported when built with TLS support. The PolarSSL SHA routines
711 are still used when the TLS library is too old for convenient support.
712
713 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
714 openssl_options), for security. OpenSSL forces this from version 1.1.0
715 server-side so match that on older versions.
716
717 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
718 allocation for $value could be released as the expansion processing
719 concluded, but leaving the global pointer active for it.
720
721 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
722 and to use the domains and local_parts ACL conditions.
723
724 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
725 incorrectly not doubled on cutthrough transmission, hence seen as a
726 body-termination at the receiving system - resulting in truncated mails.
727 Commonly the sender saw a TCP-level error, and retransmitted the message
728 via the normal store-and-forward channel. This could result in duplicates
729 received - but deduplicating mailstores were liable to retain only the
730 initial truncated version.
731
732 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
733
734 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
735
736 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
737 we're in there, support oversigning also; bug 1309.
738
739 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
740
741 HS/04 Add support for keep_environment and add_environment options.
742
743 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
744 either intentional arithmetic overflow during PRNG, or testing config-
745 induced overflows.
746
747 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
748 delivery resulted in actual delivery. Cancel cutthrough before DATA
749 stage.
750
751 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
752 rejects a recipient: pass the reject to the originator.
753
754 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
755 Many were false-positives and ignorable, but it's worth fixing the
756 former class.
757
758 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
759 for the new environment-manipulation done at startup. Move the routines
760 from being local to tls.c to being global via the os.c file.
761
762 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
763 an extract embedded as result-arg for a map, the first arg for extract
764 is unavailable so we cannot tell if this is a numbered or keyed
765 extraction. Accept either.
766
767
768 Exim version 4.86
769 -----------------
770
771 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
772 expanded.
773
774 JH/02 The smtp transport option "multi_domain" is now expanded.
775
776 JH/03 The smtp transport now requests PRDR by default, if the server offers
777 it.
778
779 JH/04 Certificate name checking on server certificates, when exim is a client,
780 is now done by default. The transport option tls_verify_cert_hostnames
781 can be used to disable this per-host. The build option
782 EXPERIMENTAL_CERTNAMES is withdrawn.
783
784 JH/05 The value of the tls_verify_certificates smtp transport and main options
785 default to the word "system" to access the system default CA bundle.
786 For GnuTLS, only version 3.0.20 or later.
787
788 JH/06 Verification of the server certificate for a TLS connection is now tried
789 (but not required) by default. The verification status is now logged by
790 default, for both outbound TLS and client-certificate supplying inbound
791 TLS connections
792
793 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
794 sites use this now.
795
796 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
797 Status Notification (bounce) messages are now MIME format per RFC 3464.
798 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
799 under the control of the dsn_advertise_hosts option, and routers may
800 have a dsn_lasthop option.
801
802 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
803 default, modifiable by a malware= option. The list separator for
804 the options can now be changed in the usual way. Bug 68.
805
806 JH/10 The smtp_receive_timeout main option is now expanded before use.
807
808 JH/11 The incoming_interface log option now also enables logging of the
809 local interface on delivery outgoing connections.
810
811 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
812 if the interface and destination host and port all match.
813
814 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
815 /defer_ok option.
816
817 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
818 Patch from Andrew Lewis.
819
820 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
821 now supports optional time-restrictions, weighting, and priority
822 modifiers per server. Patch originally by <rommer@active.by>.
823
824 JH/16 The spamd_address main option now supports a mixed list of local
825 and remote servers. Remote servers can be IPv6 addresses, and
826 specify a port-range.
827
828 JH/17 Bug 68: The spamd_address main option now supports an optional
829 timeout value per server.
830
831 JH/18 Bug 1581: Router and transport options headers_add/remove can
832 now have the list separator specified.
833
834 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
835 option values.
836
837 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
838 under OpenSSL.
839
840 JH/21 Support for the A6 type of dns record is withdrawn.
841
842 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
843 rather than the verbs used.
844
845 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
846 from 255 to 1024 chars.
847
848 JH/24 Verification callouts now attempt to use TLS by default.
849
850 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
851 are generic router options now. The defaults didn't change.
852
853 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
854 Original patch from Alexander Shikoff, worked over by JH.
855
856 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
857 files if ZCAT_COMMAND is not executable.
858
859 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
860
861 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
862
863 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
864 Normally benign, it bites when the pair was led to by a CNAME;
865 modern usage is to not canonicalize the domain to a CNAME target
866 (and we were inconsistent anyway for A-only vs AAAA+A).
867
868 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
869
870 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
871 when evaluating $sender_host_dnssec.
872
873 JH/31 Check the HELO verification lookup for DNSSEC, adding new
874 $sender_helo_dnssec variable.
875
876 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
877
878 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
879
880 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
881
882 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
883 documented as working, but never had. Support all but $spam_report.
884
885 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
886 added for tls authenticator.
887
888 HS/03 Add perl_taintmode main config option
889
890
891 Exim version 4.85
892 -----------------
893
894 TL/01 When running the test suite, the README says that variables such as
895 no_msglog_check are global and can be placed anywhere in a specific
896 test's script, however it was observed that placement needed to be near
897 the beginning for it to behave that way. Changed the runtest perl
898 script to read through the entire script once to detect and set these
899 variables, reset to the beginning of the script, and then run through
900 the script parsing/test process like normal.
901
902 TL/02 The BSD's have an arc4random API. One of the functions to induce
903 adding randomness was arc4random_stir(), but it has been removed in
904 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
905 function when detected.
906
907 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
908 cause callback expansion.
909
910 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
911 syntax errors in an expansion can be treated as a string instead of
912 logging or causing an error, due to the internal use of bool_lax
913 instead of bool when processing it.
914
915 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
916 server certificates when making smtp deliveries.
917
918 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
919
920 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
921
922 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
923
924 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
925 Merged patch from Sebastian Wiedenroth.
926
927 JH/05 Fix results-pipe from transport process. Several recipients, combined
928 with certificate use, exposed issues where response data items split
929 over buffer boundaries were not parsed properly. This eventually
930 resulted in duplicates being sent. This issue only became common enough
931 to notice due to the introduction of connection certificate information,
932 the item size being so much larger. Found and fixed by Wolfgang Breyha.
933
934 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
935 size buffer was used, resulting in syntax errors when an expansion
936 exceeded it.
937
938 JH/07 Add support for directories of certificates when compiled with a GnuTLS
939 version 3.3.6 or later.
940
941 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
942 is EXPERIMENTAL_EVENT, the main-configuration and transport options
943 both become "event_action", the variables become $event_name, $event_data
944 and $event_defer_errno. There is a new variable $verify_mode, usable in
945 routers, transports and related events. The tls:cert event is now also
946 raised for inbound connections, if the main configuration event_action
947 option is defined.
948
949 TL/06 In test suite, disable OCSP for old versions of openssl which contained
950 early OCSP support, but no stapling (appears to be less than 1.0.0).
951
952 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
953 server certificate names available under the smtp transport option
954 "tls_verify_cert_hostname" now do not permit multi-component wildcard
955 matches.
956
957 JH/10 Time-related extraction expansions from certificates now use the main
958 option "timezone" setting for output formatting, and are consistent
959 between OpenSSL and GnuTLS compilations. Bug 1541.
960
961 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
962 encoded parameter in the incoming message. Bug 1558.
963
964 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
965 include certificate info, eximon was claiming there were spoolfile
966 syntax errors.
967
968 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
969
970 JH/14 Log delivery-related information more consistently, using the sequence
971 "H=<name> [<ip>]" wherever possible.
972
973 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
974 are problematic for Debian distribution, omit them from the release
975 tarball.
976
977 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
978
979 JH/16 Fix string representation of time values on 64bit time_t architectures.
980 Bug 1561.
981
982 JH/17 Fix a null-indirection in certextract expansions when a nondefault
983 output list separator was used.
984
985
986 Exim version 4.84
987 -----------------
988 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
989 checkers that were complaining about end of non-void function with no
990 return.
991
992 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
993 This was a regression introduced in 4.83 by another bugfix.
994
995 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
996
997 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
998 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
999
1000
1001 Exim version 4.83
1002 -----------------
1003
1004 TF/01 Correctly close the server side of TLS when forking for delivery.
1005
1006 When a message was received over SMTP with TLS, Exim failed to clear up
1007 the incoming connection properly after forking off the child process to
1008 deliver the message. In some situations the subsequent outgoing
1009 delivery connection happened to have the same fd number as the incoming
1010 connection previously had. Exim would try to use TLS and fail, logging
1011 a "Bad file descriptor" error.
1012
1013 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1014 utilities have not been installed.
1015
1016 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1017 temporary space as the ACL may create new global variables.
1018
1019 TL/01 LDAP support uses per connection or global context settings, depending
1020 upon the detected version of the libraries at build time.
1021
1022 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1023 to extract and use the src ip:port in logging and expansions as if it
1024 were a direct connection from the outside internet. PPv2 support was
1025 updated based on HAProxy spec change in May 2014.
1026
1027 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1028
1029 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1030 Properly escape header and check for NULL return.
1031
1032 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1033 not dns_use_dnssec.
1034
1035 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1036
1037 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1038 characters in header names, implemented as a verify condition.
1039 Contributed by Michael Fischer v. Mollard.
1040
1041 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1042 results permerror and temperror. Previous values are deprecated but
1043 still accepted. In a future release, err_perm and err_temp will be
1044 completely removed, which will be a backward incompatibility if the
1045 ACL tests for either of these two old results. Patch contributed by
1046 user bes-internal on the mailing list.
1047
1048 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1049
1050 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1051 selectors, in both main and reject logs.
1052
1053 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1054 failed delivery.
1055
1056 JH/07 Add malware type "sock" for talking to simple daemon.
1057
1058 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1059
1060 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1061 routers/transports under cutthrough routing.
1062
1063 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1064 numbers. Touch up "bool" conditional to keep the same definition.
1065
1066 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1067
1068 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1069
1070 JH/12 Expand items in router/transport headers_add or headers_remove lists
1071 individually rather than the list as a whole. Bug 1452.
1072
1073 Required for reasonable handling of multiple headers_ options when
1074 they may be empty; requires that headers_remove items with embedded
1075 colons must have them doubled (or the list-separator changed).
1076
1077 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1078 view the policy declared in the DMARC record. Currently, $dmarc_status
1079 is a combined value of both the record presence and the result of the
1080 analysis.
1081
1082 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1083
1084 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1085 dnslookup router and the smtp transport (applying to the forward
1086 lookup).
1087
1088 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1089 of ldap servers used for a specific lookup. Patch provided by Heiko
1090 Schlichting.
1091
1092 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1093 New variable $lookup_dnssec_authenticated for observability.
1094
1095 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1096 Patch submitted by Lars Timman.
1097
1098 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1099
1100 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1101 Requires trusted mode and valid format message id, aborts otherwise.
1102 Patch contributed by Heiko Schlichting.
1103
1104 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1105 certextract with support for various fields. Bug 1358.
1106
1107 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1108 is requested by default, modifiable by smtp transport option
1109 hosts_request_ocsp.
1110
1111 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1112 operate on certificate variables to give certificate fingerprints
1113 Also new ${sha256:cert_variable}.
1114
1115 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1116
1117 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1118 Christian Aistleitner.
1119
1120 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1121
1122 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1123 file. Patch from Wolfgang Breyha.
1124
1125 JH/25 Expand the coverage of the delivery $host and $host_address to
1126 client authenticators run in verify callout. Bug 1476.
1127
1128 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1129 align with daemon_smtp_ports. Bug 72.
1130
1131 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1132 support and error reporting did not work properly.
1133
1134 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1135 and is readable. Patch from Andrew Colin Kissa.
1136
1137 TL/14 Enhance documentation of ${run expansion and how it parses the
1138 commandline after expansion, particularly in the case when an
1139 unquoted variable expansion results in an empty value.
1140
1141 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1142
1143 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1144 by renaming away from it. Addresses GH issue 15, reported by
1145 Jasper Wallace.
1146
1147 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1148
1149 TL/15 SECURITY: prevent double expansion in math comparison functions
1150 (can expand unsanitized data). Not remotely exploitable.
1151 CVE-2014-2972
1152
1153
1154 Exim version 4.82
1155 -----------------
1156
1157 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1158
1159 PP/02 Make -n do something, by making it not do something.
1160 When combined with -bP, the name of an option is not output.
1161
1162 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1163 by GnuTLS.
1164
1165 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1166 $sender_host_name and config options to manage this, and basic check
1167 routines.
1168
1169 PP/05 DSCP support for outbound connections and control modifier for inbound.
1170
1171 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1172 (Only plugin which currently uses this is kerberos4, which nobody should
1173 be using, but we should make it available and other future plugins might
1174 conceivably use it, even though it would break NAT; stuff *should* be
1175 using channel bindings instead).
1176
1177 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1178 name; added for Sendmail compatibility; requires admin caller.
1179 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1180 just ignore it); requires trusted caller.
1181 Also parse but ignore: -Ac -Am -X<logfile>
1182 Bugzilla 1117.
1183
1184 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1185
1186 TL/02 Add +smtp_confirmation as a default logging option.
1187
1188 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1189 Patch by Magnus Holmgren from 2007-02-20.
1190
1191 TL/04 Bugzilla 1281 - Spec typo.
1192 Bugzilla 1283 - Spec typo.
1193 Bugzilla 1290 - Spec grammar fixes.
1194
1195 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1196
1197 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1198
1199 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1200 mailing list by by Dmitry Isaikin.
1201
1202 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1203
1204 JH/02 Support "G" suffix to numbers in ${if comparisons.
1205
1206 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1207
1208 NM/01 Bugzilla 1197 - Spec typo
1209 Bugzilla 1196 - Spec examples corrections
1210
1211 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1212
1213 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1214 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1215 function.
1216
1217 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1218 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1219
1220 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1221 "acl {{name}{arg}...}", and optional args on acl condition
1222 "acl = name arg..."
1223
1224 JH/05 Permit multiple router/transport headers_add/remove lines.
1225
1226 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1227
1228 JH/07 Avoid using a waiting database for a single-message-only transport.
1229 Performance patch from Paul Fisher. Bugzilla 1262.
1230
1231 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1232 Bugzilla 884.
1233
1234 JH/09 Add $headers_added variable, with content from use of ACL modifier
1235 add_header (but not yet added to the message). Bugzilla 199.
1236
1237 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1238 Pulled from Bugzilla 817 by Wolfgang Breyha.
1239
1240 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1241 CVE-2012-5671
1242 (nb: this is the same fix as in Exim 4.80.1)
1243
1244 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1245 authenticators.
1246
1247 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1248 for control.
1249
1250 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1251
1252 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1253 advertise SMTP AUTH mechanism to us, instead of a generic
1254 protocol violation error. Also, make Exim more robust to bad
1255 data from the Dovecot auth socket.
1256
1257 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1258
1259 When a queue runner is handling a message, Exim first routes the
1260 recipient addresses, during which it prunes them based on the retry
1261 hints database. After that it attempts to deliver the message to
1262 any remaining recipients. It then updates the hints database using
1263 the retry rules.
1264
1265 So if a recipient address works intermittently, it can get repeatedly
1266 deferred at routing time. The retry hints record remains fresh so the
1267 address never reaches the final cutoff time.
1268
1269 This is a fairly common occurrence when a user is bumping up against
1270 their storage quota. Exim had some logic in its local delivery code
1271 to deal with this. However it did not apply to per-recipient defers
1272 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1273
1274 This change adds a proper retry rule check during routing so that the
1275 final cutoff time is checked against the message's age. We only do
1276 this check if there is an address retry record and there is not a
1277 domain retry record; this implies that previous attempts to handle
1278 the address had the retry_use_local_parts option turned on. We use
1279 this as an approximation for the destination being like a local
1280 delivery, as in LMTP.
1281
1282 I suspect this new check makes the old local delivery cutoff check
1283 redundant, but I have not verified this so I left the code in place.
1284
1285 TF/02 Correct gecos expansion when From: is a prefix of the username.
1286
1287 Test 0254 submits a message to Exim with the header
1288
1289 Resent-From: f
1290
1291 When I ran the test suite under the user fanf2, Exim expanded
1292 the header to contain my full name, whereas it should have added
1293 a Resent-Sender: header. It erroneously treats any prefix of the
1294 username as equal to the username.
1295
1296 This change corrects that bug.
1297
1298 GF/01 DCC debug and logging tidyup
1299 Error conditions log to paniclog rather than rejectlog.
1300 Debug lines prefixed by "DCC: " to remove any ambiguity.
1301
1302 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1303
1304 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1305 Bug spotted by Jeremy Harris; was flawed since initial commit.
1306 Would have resulted in OCSP responses post-SNI triggering an Exim
1307 NULL dereference and crash.
1308
1309 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1310
1311 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1312 Bug detection, analysis and fix by Samuel Thibault.
1313 Bugzilla 1331, Debian bug #698092.
1314
1315 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1316
1317 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1318 Server implementation by Todd Lyons, client by JH.
1319 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1320 config variable "prdr_enable" controls whether the server
1321 advertises the facility. If the client requests PRDR a new
1322 acl_data_smtp_prdr ACL is called once for each recipient, after
1323 the body content is received and before the acl_smtp_data ACL.
1324 The client is controlled by both of: a hosts_try_prdr option
1325 on the smtp transport, and the server advertisement.
1326 Default client logging of deliveries and rejections involving
1327 PRDR are flagged with the string "PRDR".
1328
1329 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1330 fclose(). Diagnosis by Todd Lyons.
1331
1332 PP/17 Update configure.default to handle IPv6 localhost better.
1333 Patch by Alain Williams (plus minor tweaks).
1334 Bugzilla 880.
1335
1336 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1337 This is now consistent with GnuTLS, and is now documented: the
1338 previous undocumented portable approach to treating the option as
1339 unset was to force an expansion failure. That still works, and
1340 an empty string is now equivalent.
1341
1342 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1343 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1344 not performing validation itself.
1345
1346 PP/20 Added force_command boolean option to pipe transport.
1347 Patch from Nick Koston, of cPanel Inc.
1348
1349 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1350 Bugzilla 321, 823.
1351
1352 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1353
1354 PP/21 Fix eximon continuous updating with timestamped log-files.
1355 Broken in a format-string cleanup in 4.80, missed when I repaired the
1356 other false fix of the same issue.
1357 Report and fix from Heiko Schlichting.
1358 Bugzilla 1363.
1359
1360 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1361 Report from Prashanth Katuri.
1362
1363 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1364 It's SecureTransport, so affects any MacOS clients which use the
1365 system-integrated TLS libraries, including email clients.
1366
1367 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1368 using a MIME ACL for non-SMTP local injection.
1369 Report and assistance in diagnosis by Warren Baker.
1370
1371 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1372
1373 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1374
1375 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1376 last id that failed so it may be referenced in subsequent ACL's.
1377
1378 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1379 Alexander Miroch.
1380
1381 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1382 ldap library initialization, allowing self-signed CA's to be
1383 used. Also properly sets require_cert option later in code by
1384 using NULL (global ldap config) instead of ldap handle (per
1385 session). Bug diagnosis and testing by alxgomz.
1386
1387 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1388 the src/util/ subdirectory.
1389
1390 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1391 renamed to Transport Post Delivery Action by Jeremy Harris, as
1392 EXPERIMENTAL_TPDA.
1393
1394 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1395 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1396 redis_servers = needs to be configured which will be used by the redis
1397 lookup. Patch from Warren Baker, of The Packet Hub.
1398
1399 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1400
1401 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1402 hostname or reverse DNS when processing a host list. Used suggestions
1403 from multiple comments on this bug.
1404
1405 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1406
1407 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1408 Missed a few lines, added it to make the runtest require no keyboard
1409 interaction.
1410
1411 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1412 contains upper case chars. Make router use caseful_local_part.
1413
1414 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1415 support when GnuTLS has been built with p11-kit.
1416
1417
1418 Exim version 4.80.1
1419 -------------------
1420
1421 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1422 CVE-2012-5671
1423 This, or similar/improved, will also be change PP/11 of 4.82.
1424
1425
1426 Exim version 4.80
1427 -----------------
1428
1429 PP/01 Handle short writes when writing local log-files.
1430 In practice, only affects FreeBSD (8 onwards).
1431 Bugzilla 1053, with thanks to Dmitry Isaikin.
1432
1433 NM/01 Bugzilla 949 - Documentation tweak
1434
1435 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1436 improved.
1437
1438 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1439
1440 PP/02 Implemented gsasl authenticator.
1441
1442 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1443
1444 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1445 `pkg-config foo` for cflags/libs.
1446
1447 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1448 with rest of GSASL and with heimdal_gssapi.
1449
1450 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1451 `pkg-config foo` for cflags/libs for the TLS implementation.
1452
1453 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1454 properties get this fed in as external SSF. A number of robustness
1455 and debugging improvements to the cyrus_sasl authenticator.
1456
1457 PP/08 cyrus_sasl server now expands the server_realm option.
1458
1459 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1460 Patch by Jeremy Harris.
1461
1462 PP/10 Added dbmjz lookup type.
1463
1464 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1465
1466 PP/12 MAIL args handles TAB as well as SP, for better interop with
1467 non-compliant senders.
1468 Analysis and variant patch by Todd Lyons.
1469
1470 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1471 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1472 Patch from Dirk Mueller <dmueller@suse.com>
1473
1474 PP/13 tls_peerdn now print-escaped for spool files.
1475 Observed some $tls_peerdn in wild which contained \n, which resulted
1476 in spool file corruption.
1477
1478 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1479 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1480 or write after TLS renegotiation, which otherwise led to messages
1481 "Got SSL error 2".
1482
1483 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1484 as a tracking header (ie: a signed header comes before the signature).
1485 Patch from Wolfgang Breyha.
1486
1487 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1488 comma-sep list; embedded commas doubled.
1489
1490 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1491
1492 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1493 diagnostics.
1494 Report and patch from Dmitry Banschikov.
1495
1496 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1497 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1498 failures. We appear to now support TLS1.1+ with Exim.
1499
1500 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1501 lets Exim select keys and certificates based upon TLS SNI from client.
1502 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1503 before an outbound SMTP session. New log_selector, +tls_sni.
1504
1505 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1506 NULL dereference. Report and patch from Alun Jones.
1507
1508 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1509 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1510 Not seeing resolver debug output on NetBSD, but suspect this is a
1511 resolver implementation change.
1512
1513 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1514 Left warnings. Added "eximon gdb" invocation mode.
1515
1516 PP/21 Defaulting "accept_8bitmime" to true, not false.
1517
1518 PP/22 Added -bw for inetd wait mode support.
1519
1520 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1521 locate the relevant includes and libraries. Made this the default.
1522
1523 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1524 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1525
1526 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1527 This may cause build issues on older platforms.
1528
1529 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1530 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1531 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1532 Added SNI support via GnuTLS too.
1533 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1534
1535 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1536
1537 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1538 Applied second patch from Janne, implementing suggestion to default
1539 multiple-strings-in-record handling to match SPF spec.
1540
1541 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1542
1543 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1544 read-only, out of scope).
1545 Patch from Wolfgang Breyha, report from Stuart Northfield.
1546
1547 PP/29 Fix three issues highlighted by clang analyser static analysis.
1548 Only crash-plausible issue would require the Cambridge-specific
1549 iplookup router and a misconfiguration.
1550 Report from Marcin Mirosław.
1551
1552 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1553
1554 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1555 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1556 As part of this, removing so much warning spew let me fix some minor
1557 real issues in debug logging.
1558
1559 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1560 assignment on my part. Fixed.
1561
1562 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1563 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1564 Janne Snabb (who went above and beyond: thank you).
1565
1566 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1567 string otherwise requires a connection and a bunch more work and it's
1568 relatively easy to get wrong. Should also expose TLS library linkage
1569 problems.
1570
1571 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1572 64-bit ${eval} (JH/03).
1573
1574 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1575 GNU libc to support some of the 64-bit stuff, should not lead to
1576 conflicts. Defined before os.h is pulled in, so if a given platform
1577 needs to override this, it can.
1578
1579 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1580 protection layer was required, which is not implemented.
1581 Bugzilla 1254, patch from Wolfgang Breyha.
1582
1583 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1584 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1585 tls_dhparam take prime identifiers. Also unbreak combination of
1586 OpenSSL+DH_params+TLSSNI.
1587
1588 PP/39 Disable SSLv2 by default in OpenSSL support.
1589
1590
1591 Exim version 4.77
1592 -----------------
1593
1594 PP/01 Solaris build fix for Oracle's LDAP libraries.
1595 Bugzilla 1109, patch from Stephen Usher.
1596
1597 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1598
1599 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1600 whitespace trailer
1601
1602 TF/02 Fix a couple more cases where we did not log the error message
1603 when unlink() failed. See also change 4.74-TF/03.
1604
1605 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1606 lock up or crash if it happened to be inside a call to libc when it
1607 got a SIGUSR1 from exiwhat.
1608
1609 The SIGUSR1 handler appends the current process status to the process
1610 log which is later printed by exiwhat. It used to use the general
1611 purpose logging code to do this, but several functions it calls are
1612 not safe for signals.
1613
1614 The new output code in the SIGUSR1 handler is specific to the process
1615 log, and simple enough that it's easy to inspect for signal safety.
1616 Removing some special cases also simplifies the general logging code.
1617 Removing the spurious timestamps from the process log simplifies
1618 exiwhat.
1619
1620 TF/04 Improved ratelimit ACL condition.
1621
1622 The /noupdate option has been deprecated in favour of /readonly which
1623 has clearer semantics. The /leaky, /strict, and /readonly update modes
1624 are mutually exclusive. The update mode is no longer included in the
1625 database key; it just determines when the database is updated. (This
1626 means that when you upgrade Exim will forget old rate measurements.)
1627
1628 Exim now checks that the per_* options are used with an update mode that
1629 makes sense for the current ACL. For example, when Exim is processing a
1630 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1631 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1632 must specify per_mail/readonly. If you omit the update mode it defaults to
1633 /leaky where that makes sense (as before) or /readonly where required.
1634
1635 The /noupdate option is now undocumented but still supported for
1636 backwards compatibility. It is equivalent to /readonly except that in
1637 ACLs where /readonly is required you may specify /leaky/noupdate or
1638 /strict/noupdate which are treated the same as /readonly.
1639
1640 A useful new feature is the /count= option. This is a generalization
1641 of the per_byte option, so that you can measure the throughput of other
1642 aggregate values. For example, the per_byte option is now equivalent
1643 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1644
1645 The per_rcpt option has been generalized using the /count= mechanism
1646 (though it's more complicated than the per_byte equivalence). When it is
1647 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1648 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1649 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1650 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1651 Note that using per_rcpt with a non-readonly update mode in more than
1652 one ACL will cause the recipients to be double-counted. (The per_mail
1653 and per_byte options don't have this problem.)
1654
1655 The handling of very low rates has changed slightly. If the computed rate
1656 is less than the event's count (usually one) then this event is the first
1657 after a long gap. In this case the rate is set to the same as this event's
1658 count, so that the first message of a spam run is counted properly.
1659
1660 The major new feature is a mechanism for counting the rate of unique
1661 events. The new per_addr option counts the number of different
1662 recipients that someone has sent messages to in the last time period. It
1663 behaves like per_rcpt if all the recipient addresses are different, but
1664 duplicate recipient addresses do not increase the measured rate. Like
1665 the /count= option this is a general mechanism, so the per_addr option
1666 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1667 example, measure the rate that a client uses different sender addresses
1668 with the options per_mail/unique=$sender_address. There are further
1669 details in the main documentation.
1670
1671 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1672
1673 TF/06 Removed a few PCRE remnants.
1674
1675 TF/07 Automatically extract Exim's version number from tags in the git
1676 repository when doing development or release builds.
1677
1678 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1679 Bugzilla 879. Patch from Paul Fisher.
1680
1681 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1682 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1683 Bugzilla 97.
1684
1685 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1686
1687 PP/05 Variable $av_failed, true if the AV scanner deferred.
1688 Bugzilla 1078. Patch from John Horne.
1689
1690 PP/06 Stop make process more reliably on build failure.
1691 Bugzilla 1087. Patch from Heiko Schlittermann.
1692
1693 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1694 Bugzilla 1089. Patch from Heiko Schlittermann.
1695
1696 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1697 Bugzilla 1131. Patch from Holger Weiß.
1698
1699 PP/09 Handle IPv6 addresses with SPF.
1700 Bugzilla 860. Patch from Wolfgang Breyha.
1701
1702 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1703 Bugzilla 1156.
1704 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1705 Bugzilla 1095.
1706
1707 PP/11 match_* no longer expand right-hand-side by default.
1708 New compile-time build option, EXPAND_LISTMATCH_RHS.
1709 New expansion conditions, "inlist", "inlisti".
1710
1711 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1712
1713 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1714
1715 PP/14 fix log_write() format string regression from TF/03.
1716 Bugzilla 1152. Patch from Dmitry Isaikin.
1717
1718
1719 Exim version 4.76
1720 -----------------
1721
1722 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1723
1724 PP/02 Harmonised TLS library version reporting; only show if debugging.
1725 Layout now matches that introduced for other libraries in 4.74 PP/03.
1726
1727 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1728
1729 PP/04 New "dns_use_edns0" global option.
1730
1731 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1732 Bugzilla 1098.
1733
1734 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1735 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1736
1737 TK/01 Updated PolarSSL code to 0.14.2.
1738 Bugzilla 1097. Patch from Andreas Metzler.
1739
1740 PP/07 Catch divide-by-zero in ${eval:...}.
1741 Fixes bugzilla 1102.
1742
1743 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1744 Bugzilla 1104.
1745
1746 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1747 format-string attack -- SECURITY: remote arbitrary code execution.
1748
1749 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1750 time unintentionally subject to list matching rules, letting the header
1751 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1752 arbitrary string expansion). This allowed for information disclosure.
1753
1754 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
1755 INT_MIN/-1 -- value coerced to INT_MAX.
1756
1757
1758 Exim version 4.75
1759 -----------------
1760
1761 NM/01 Workaround for PCRE version dependency in version reporting
1762 Bugzilla 1073
1763
1764 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
1765 This fixes portability to compilers other than gcc, notably
1766 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
1767
1768 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
1769 makefiles for portability to HP-UX and POSIX correctness.
1770
1771 PP/01 Permit LOOKUP_foo enabling on the make command-line.
1772 Also via indented variable definition in the Makefile.
1773 (Debugging by Oliver Heesakkers).
1774
1775 PP/02 Restore caching of spamd results with expanded spamd_address.
1776 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1777
1778 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1779 Improves build reliability. Fix from: Frank Elsner
1780
1781 NM/02 Fix wide character breakage in the rfc2047 coding
1782 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1783
1784 NM/03 Allow underscore in dnslist lookups
1785 Fixes bug 1026. Patch from Graeme Fowler
1786
1787 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1788 Code patches from Adam Ciarcinski of NetBSD.
1789
1790 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1791 Fixes bug 943.
1792
1793 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1794 is logged, to avoid truncation. Patch from John Horne.
1795
1796 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1797 Patch from Jakob Hirsch.
1798
1799 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1800 SQL string expansion failure details.
1801 Patch from Andrey Oktyabrski.
1802
1803 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1804 Patch from Simon Arlott.
1805
1806 PP/09 New lookups functionality failed to compile on old gcc which rejects
1807 extern declarations in function scope.
1808 Patch from Oliver Fleischmann
1809
1810 PP/10 Use sig_atomic_t for flags set from signal handlers.
1811 Check getgroups() return and improve debugging.
1812 Fixed developed for diagnosis in bug 927 (which turned out to be
1813 a kernel bug).
1814
1815 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1816 Patch from Mark Zealey.
1817
1818 PP/12 Bugzilla 1056: Improved spamd server selection.
1819 Patch from Mark Zealey.
1820
1821 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1822 Based on patch from Heiko Schlittermann.
1823
1824 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1825 Patch from Uwe Doering, sign-off by Michael Haardt.
1826
1827 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1828 variable declaration deep within a block. Bug and patch from
1829 Dennis Davis.
1830
1831 PP/15 lookups-Makefile IRIX compatibility coercion.
1832
1833 PP/16 Make DISABLE_DKIM build knob functional.
1834
1835 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1836 Patch by Simon Arlott
1837
1838 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1839 variable argument macros. Our copy now differs from upstream.
1840
1841
1842 Exim version 4.74
1843 -----------------
1844
1845 TF/01 Failure to get a lock on a hints database can have serious
1846 consequences so log it to the panic log.
1847
1848 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1849 controlled using the smtp_confirmation log selector.
1850
1851 TF/03 Include the error message when we fail to unlink a spool file.
1852
1853 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1854 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1855 for maintaining out-of-tree patches for some time.
1856
1857 PP/01 Bugzilla 139: Documentation and portability issues.
1858 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1859 Handle per-OS dynamic-module compilation flags.
1860
1861 PP/02 Let /dev/null have normal permissions.
1862 The 4.73 fixes were a little too stringent and complained about the
1863 permissions on /dev/null. Exempt it from some checks.
1864 Reported by Andreas M. Kirchwitz.
1865
1866 PP/03 Report version information for many libraries, including
1867 Exim version information for dynamically loaded libraries. Created
1868 version.h, now support a version extension string for distributors
1869 who patch heavily. Dynamic module ABI change.
1870
1871 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1872 privilege escalation vulnerability whereby the Exim run-time user
1873 can cause root to append content of the attacker's choosing to
1874 arbitrary files.
1875
1876 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1877 (Wolfgang Breyha)
1878
1879 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1880 If dropping privileges for untrusted macros, we disabled normal logging
1881 on the basis that it would fail; for the Exim run-time user, this is not
1882 the case, and it resulted in successful deliveries going unlogged.
1883 Fixed. Reported by Andreas Metzler.
1884
1885
1886 Exim version 4.73
1887 -----------------
1888
1889 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1890 only prepend for the Resent-* case. Fixes regression introduced in
1891 Exim 4.70 by NM/22 for Bugzilla 607.
1892
1893 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1894 increasing numbers of administrators be bitten by this.
1895
1896 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1897
1898 PP/03 Bugzilla 994: added openssl_options main configuration option.
1899
1900 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1901
1902 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1903
1904 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1905
1906 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1907 without a peer certificate, leading to a segfault because of an
1908 assumption that peers always have certificates. Be a little more
1909 paranoid. Problem reported by Martin Tscholak.
1910
1911 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1912 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1913 NB: ClamAV planning to remove STREAM in "middle of 2010".
1914 CL also introduces -bmalware, various -d+acl logging additions and
1915 more caution in buffer sizes.
1916
1917 PP/09 Implemented reverse_ip expansion operator.
1918
1919 PP/10 Bugzilla 937: provide a "debug" ACL control.
1920
1921 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
1922
1923 PP/12 Bugzilla 973: Implement --version.
1924
1925 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
1926
1927 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
1928
1929 PP/15 Bugzilla 816: support multiple condition rules on Routers.
1930
1931 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
1932 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
1933 ignore trailing whitespace.
1934
1935 JJ/02 prevent non-panic DKIM error from being sent to paniclog
1936
1937 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
1938 "exim" to be used
1939
1940 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
1941 Notification from Dr Andrew Aitchison.
1942
1943 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
1944 ExtendedDetectionInfo response format.
1945 Notification from John Horne.
1946
1947 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
1948 compatible.
1949
1950 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
1951 XSL and documented dependency on system catalogs, with examples of how
1952 it normally works.
1953
1954 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
1955 access.
1956
1957 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
1958 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
1959 configuration file which is writeable by the Exim user or group.
1960
1961 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
1962 of configuration files to cover files specified with the -C option if
1963 they are going to be used with root privileges, not just the default
1964 configuration file.
1965
1966 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
1967 option (effectively making it always true).
1968
1969 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
1970 files to be used while preserving root privileges.
1971
1972 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
1973 that rogue child processes cannot use them.
1974
1975 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
1976 run-time user, instead of root.
1977
1978 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
1979 Exim run-time user without dropping privileges.
1980
1981 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
1982 result string, instead of calling string_vformat() twice with the same
1983 arguments.
1984
1985 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
1986 for other users. Others should always drop root privileges if they use
1987 -C on the command line, even for a whitelisted configure file.
1988
1989 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
1990
1991 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
1992
1993
1994 Exim version 4.72
1995 -----------------
1996
1997 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
1998 $data_path, and $header_path variables; fixed documentation bugs and
1999 typos
2000
2001 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2002 exipick to access non-standard spools, including the "frozen" queue
2003 (Finput)
2004
2005 NM/01 Bugzilla 965: Support mysql stored procedures.
2006 Patch from Alain Williams
2007
2008 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2009
2010 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2011 Patch from Andreas Metzler
2012
2013 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2014 Patch from Kirill Miazine
2015
2016 NM/05 Bugzilla 671: Added umask to procmail example.
2017
2018 JJ/03 installed exipick 20100323.0, fixing doc bug
2019
2020 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2021 directory. Notification and patch from Dan Rosenberg.
2022
2023 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2024
2025 TK/02 Improve log output when DKIM signing operation fails.
2026
2027 MH/01 Treat the transport option dkim_domain as a colon separated
2028 list, not as a single string, and sign the message with each element,
2029 omitting multiple occurences of the same signer.
2030
2031 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2032 Bugzilla 985, 986. Patch by Simon Arlott
2033
2034 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2035 Patch by Simon Arlott
2036
2037 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2038 MBX locking. Notification from Dan Rosenberg.
2039
2040
2041 Exim version 4.71
2042 -----------------
2043
2044 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2045
2046 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2047
2048 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2049
2050 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2051
2052 NM/04 Bugzilla 915: Flag broken perl installation during build.
2053
2054
2055 Exim version 4.70
2056 -----------------
2057
2058 TK/01 Added patch by Johannes Berg that expands the main option
2059 "spamd_address" if it starts with a dollar sign.
2060
2061 TK/02 Write list of recipients to X-Envelope-Sender header when building
2062 the mbox-format spool file for content scanning (suggested by Jakob
2063 Hirsch).
2064
2065 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2066 (http://www.dcc-servers.net/) support via dccifd. Activated by
2067 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2068
2069 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2070 by Mark Daniel Reidel <mr@df.eu>.
2071
2072 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2073 When building exim an external PCRE library is now needed -
2074 PCRE is a system library on the majority of modern systems.
2075 See entry on PCRE_LIBS in EDITME file.
2076
2077 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2078 conversation. Added nologin parameter to request.
2079 Patch contributed by Kirill Miazine.
2080
2081 TF/01 Do not log submission mode rewrites if they do not change the address.
2082
2083 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2084
2085 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2086 log files in place. Contributed by Roberto Lima.
2087
2088 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2089
2090 TF/03 Bugzilla 615: When checking the local_parts router precondition
2091 after a local_part_suffix or local_part_prefix option, Exim now
2092 does not use the address's named list lookup cache, since this
2093 contains cached lookups for the whole local part.
2094
2095 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2096 Robert Millan. Documentation is in experimental-spec.txt.
2097
2098 TF/04 Bugzilla 668: Fix parallel build (make -j).
2099
2100 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2101
2102 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2103 Patch provided by Jan Srzednicki.
2104
2105 TF/05 Leading white space used to be stripped from $spam_report which
2106 wrecked the formatting. Now it is preserved.
2107
2108 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2109 that they are available at delivery time.
2110
2111 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2112
2113 TF/08 TLS error reporting now respects the incoming_interface and
2114 incoming_port log selectors.
2115
2116 TF/09 Produce a more useful error message if an SMTP transport's hosts
2117 setting expands to an empty string.
2118
2119 NM/06 Bugzilla 744: EXPN did not work under TLS.
2120 Patch provided by Phil Pennock.
2121
2122 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2123 Patch provided by Richard Godbee.
2124
2125 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2126 acl_smtp_notquit, added index entry.
2127
2128 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2129 Patch provided by Eugene Bujak.
2130
2131 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2132 accept(). Patch provided by Maxim Dounin.
2133
2134 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2135 Patch provided by Phil Pennock.
2136
2137 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2138
2139 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2140 Patch provided by Brad "anomie" Jorsch.
2141
2142 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2143 Patch provided by Dean Brooks.
2144
2145 TK/05 Add native DKIM support (does not depend on external libraries).
2146
2147 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2148 Patch provided by Graeme Fowler.
2149
2150 NM/16 Bugzilla 851: Documentation example syntax fix.
2151
2152 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2153
2154 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2155 lsearch.
2156
2157 NM/19 Bugzilla 745: TLS version reporting.
2158 Patch provided by Phil Pennock.
2159
2160 NM/20 Bugzilla 167: bool: condition support.
2161 Patch provided by Phil Pennock.
2162
2163 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2164 clients. Patch provided by Phil Pennock.
2165
2166 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2167 Patch provided by Brad "anomie" Jorsch.
2168
2169 NM/23 Bugzilla 687: Fix misparses in eximstats.
2170 Patch provided by Heiko Schlittermann.
2171
2172 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2173 Patch provided by Heiko Schlittermann.
2174
2175 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2176 plus update to original patch.
2177
2178 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2179
2180 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2181 Patch provided by David Brownlee.
2182
2183 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2184
2185 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2186
2187 NM/30 Bugzilla 888: TLS documentation bugfixes.
2188
2189 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2190
2191 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2192 Unlike the original bugzilla I have changed all shell scripts in src tree.
2193
2194 NM/33 Bugzilla 898: Transport filter timeout fix.
2195 Patch by Todd Rinaldo.
2196
2197 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2198 Patch by Serge Demonchaux.
2199
2200 NM/35 Bugzilla 39: Base64 decode bug fixes.
2201 Patch by Jakob Hirsch.
2202
2203 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2204
2205 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2206
2207 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2208
2209 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2210
2211
2212 Exim version 4.69
2213 -----------------
2214
2215 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2216 ALT-N's libdkim that I have put here:
2217 http://duncanthrax.net/exim-experimental/
2218
2219 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2220 were called 'true' and it seems that C99 defines that as a reserved
2221 keyword to be used with 'bool' variable types. That means you could
2222 not include C99-style headers which use bools without triggering
2223 build errors in sieve.c.
2224
2225 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2226 as mailq or other aliases. Changed the --help handling significantly
2227 to do whats expected. exim_usage() emits usage/help information.
2228
2229 SC/01 Added the -bylocaldomain option to eximstats.
2230
2231 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2232
2233 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2234
2235 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2236
2237
2238 Exim version 4.68
2239 -----------------
2240
2241 PH/01 Another patch from the Sieve maintainer.
2242
2243 PH/02 When an IPv6 address is converted to a string for single-key lookup
2244 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2245 dots are used instead of colons so that keys in lsearch files need not
2246 contain colons. This was done some time before quoting was made available
2247 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2248 (notated using the quote facility) so as to distinguish them from IPv4
2249 keys. This meant that lookups for IP addresses in host lists did not work
2250 for iplsearch lookups.
2251
2252 This has been fixed by arranging for IPv6 addresses to be expressed with
2253 colons if the lookup type is iplsearch. This is not incompatible, because
2254 previously such lookups could never work.
2255
2256 The situation is now rather anomalous, since one *can* have colons in
2257 ordinary lsearch keys. However, making the change in all cases is
2258 incompatible and would probably break a number of configurations.
2259
2260 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2261 version.
2262
2263 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2264 conversion specification without a maximum field width, thereby enabling
2265 a rogue spamd server to cause a buffer overflow. While nobody in their
2266 right mind would setup Exim to query an untrusted spamd server, an
2267 attacker that gains access to a server running spamd could potentially
2268 exploit this vulnerability to run arbitrary code as the Exim user.
2269
2270 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2271 $primary_hostname instead of what libspf2 thinks the hosts name is.
2272
2273 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2274 a directory entry by the name of the lookup key. Previously, if a
2275 symlink pointed to a non-existing file or a file in a directory that
2276 Exim lacked permissions to read, a lookup for a key matching that
2277 symlink would fail. Now it is enough that a matching directory entry
2278 exists, symlink or not. (Bugzilla 503.)
2279
2280 PH/03 The body_linecount and body_zerocount variables are now exported in the
2281 local_scan API.
2282
2283 PH/04 Added the $dnslist_matched variable.
2284
2285 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2286 This means they are set thereafter only if the connection becomes
2287 encrypted.
2288
2289 PH/06 Added the client_condition to authenticators so that some can be skipped
2290 by clients under certain conditions.
2291
2292 PH/07 The error message for a badly-placed control=no_multiline_responses left
2293 "_responses" off the end of the name.
2294
2295 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2296
2297 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2298 (without spaces) instead of just copying the configuration text.
2299
2300 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2301
2302 PH/11 Added $max_received_linelength.
2303
2304 PH/12 Added +ignore_defer and +include_defer to host lists.
2305
2306 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2307 way in which PCRE > 7.0 is built.
2308
2309 PH/14 Implemented queue_only_load_latch.
2310
2311 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2312 MAIL command. The effect was to mangle the value on 64-bit systems.
2313
2314 PH/16 Another patch from the Sieve maintainer.
2315
2316 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2317
2318 PH/18 If a system quota error occurred while trying to create the file for
2319 a maildir delivery, the message "Mailbox is full" was not appended to the
2320 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2321 only to a quota excession during the actual writing of the file.
2322
2323 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2324 characters?) which causes problems in log lines. The DN values are now
2325 passed through string_printing() before being added to log lines.
2326
2327 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2328 and InterBase are left for another time.)
2329
2330 PH/21 Added message_body_newlines option.
2331
2332 PH/22 Guard against possible overflow in moan_check_errorcopy().
2333
2334 PH/23 POSIX allows open() to be a macro; guard against that.
2335
2336 PH/24 If the recipient of an error message contained an @ in the local part
2337 (suitably quoted, of course), incorrect values were put in $domain and
2338 $local_part during the evaluation of errors_copy.
2339
2340
2341 Exim version 4.67
2342 -----------------
2343
2344 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2345 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2346 Jan Srzednicki.
2347
2348 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2349 issue a MAIL command.
2350
2351 PH/02 In an ACL statement such as
2352
2353 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2354
2355 if a client was not listed at all, or was listed with a value other than
2356 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2357 the condition was not true (as it should be), so access was not denied.
2358 The bug was that the ! inversion was incorrectly passed on to the second
2359 item. This has been fixed.
2360
2361 PH/03 Added additional dnslists conditions == and =& which are different from
2362 = and & when the dns lookup returns more than one IP address.
2363
2364 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2365 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2366
2367 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2368 FSYNC, which compiles an option called disable_fsync that allows for
2369 bypassing fsync(). The documentation is heavily laced with warnings.
2370
2371 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2372
2373 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2374 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2375 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2376 including adding "make clean"; (3) Added -fPIC when compiling the test
2377 dynamically loaded module, to get rid of a warning.
2378
2379 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2380 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2381 = 0s. The bug is otherwise harmless.
2382
2383 PH/07 There was a bug in the dovecot authenticator such that the value of
2384 $auth1 could be overwritten, and so not correctly preserved, after a
2385 successful authentication. This usually meant that the value preserved by
2386 the server_setid option was incorrect.
2387
2388 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2389
2390 PH/09 Installed PCRE release 7.0.
2391
2392 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2393 run for batched SMTP input. It is now run at the start of every message
2394 in the batch. While fixing this I discovered that the process information
2395 (output by running exiwhat) was not always getting set for -bs and -bS
2396 input. This is fixed, and it now also says "batched" for BSMTP.
2397
2398 PH/11 Added control=no_pipelining.
2399
2400 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2401 patch, slightly modified), and move the expansion of helo_data till after
2402 the connection is made in the smtp transport (so it can use these
2403 values).
2404
2405 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2406
2407 PH/14 Added log_selector = +pid.
2408
2409 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2410
2411 PH/16 Add ${if forany and ${if forall.
2412
2413 PH/17 Added dsn_from option to vary the From: line in DSNs.
2414
2415 PH/18 Flush SMTP output before performing a callout, unless control =
2416 no_callout_flush is set.
2417
2418 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2419 was true (the default) a successful delivery failed to delete the retry
2420 item, thus causing premature timeout of the address. The bug is now
2421 fixed.
2422
2423 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2424
2425 PH/21 Long custom messages for fakedefer and fakereject are now split up
2426 into multiline responses in the same way that messages for "deny" and
2427 other ACL rejections are.
2428
2429 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2430 with slight modification.
2431
2432 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2433 draft, changing the syntax and factoring some duplicate code".
2434
2435 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2436 for deliveries of the second and subsequent messages over the same SMTP
2437 connection.
2438
2439 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2440 ${reduce, with only minor "tidies".
2441
2442 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2443
2444 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2445 expansion side effects.
2446
2447 PH/27 When a message times out after an over-quota error from an Exim-imposed
2448 quota, the bounce message says "mailbox is full". This message was not
2449 being given when it was a system quota that was exceeded. It now should
2450 be the same.
2451
2452 MH/03 Made $recipients available in local_scan(). local_scan() already has
2453 better access to the recipient list through recipients_list[], but
2454 $recipients can be useful in postmaster-provided expansion strings.
2455
2456 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2457 in the case of a MAIL command with additional options following the
2458 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2459 were accidentally chopped off.
2460
2461 PH/29 SMTP synchronization checks are implemented when a command is read -
2462 there is a check that no more input is waiting when there shouldn't be
2463 any. However, for some commands, a delay in an ACL can mean that it is
2464 some time before the response is written. In this time, more input might
2465 arrive, invalidly. So now there are extra checks after an ACL has run for
2466 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2467 pipelining has not been advertised.
2468
2469 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2470
2471 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2472 returned in the SMTP response when smtp_return_error_details was false.
2473 This has been fixed.
2474
2475 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2476 instead of the C I/O that was originally supplied, because problems were
2477 reported on Solaris.
2478
2479 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2480 Exim which did not show up earlier: it was assuming that a call to
2481 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2482 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2483 was a macro that became an assignment, so it seemed to work. This has
2484 changed to a proper function call with a void return, hence the compile
2485 error. Exim's code has been fixed.
2486
2487 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2488 cpus.
2489
2490 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2491
2492 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2493
2494 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2495 because it turns out to be too big or there is a timeout) there is no
2496 "Completed" line in the log. When some messages of this type were
2497 selected by exigrep, they were listed as "not completed". Others were
2498 picked up by some special patterns. I have improved the selection
2499 criteria to be more general.
2500
2501 PH/38 The host_find_failed option in the manualroute router can now be set
2502 to "ignore", to completely ignore a host whose IP address cannot be
2503 found. If all hosts are ignored, the behaviour is controlled by the new
2504 host_all_ignored option.
2505
2506 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2507 homing or because of multiple MX records with /mx) generated more than
2508 one IP address, and the following item turned out to be the local host,
2509 all the secondary addresses of the first item were incorrectly removed
2510 from the list, along with the local host and any following hosts (which
2511 is what is supposed to happen).
2512
2513 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2514 whoever called Exim into the -H file. In the case of the daemon it was
2515 behaving confusingly. When first started, it used values for whoever
2516 started the daemon, but after a SIGHUP it used the Exim user (because it
2517 calls itself on a restart). I have changed the code so that it now always
2518 uses the Exim user.
2519
2520 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2521 message are rejected with the same error (e.g. no authentication or bad
2522 sender address), and a DATA command is nevertheless sent (as can happen
2523 with PIPELINING or a stupid MUA), the error message that was given to the
2524 RCPT commands is included in the rejection of the DATA command. This is
2525 intended to be helpful for MUAs that show only the final error to their
2526 users.
2527
2528 PH/42 Another patch from the Sieve maintainer.
2529
2530 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2531 Eximstats - Fixed some broken HTML links and added missing column headers
2532 (Jez Hancock).
2533 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2534 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2535
2536 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2537
2538 PH/43 Yet another patch from the Sieve maintainer.
2539
2540 PH/44 I found a way to check for a TCP/IP connection going away before sending
2541 the response to the final '.' that terminates a message, but only in the
2542 case where the client has not sent further data following the '.'
2543 (unfortunately, this is allowed). However, in many cases there won't be
2544 any further data because there won't be any more messages to send. A call
2545 to select() can be used: if it shows that the input is "ready", there is
2546 either input waiting, or the socket has been closed. An attempt to read
2547 the next input character can distinguish the two cases. Previously, Exim
2548 would have sent an OK response which the client would never have see.
2549 This could lead to message repetition. This fix should cure that, at
2550 least in a lot of common cases.
2551
2552 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2553 advertised in response to EHLO.
2554
2555
2556 Exim version 4.66
2557 -----------------
2558
2559 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2560 fixed by 4.65/MH/01 (is this a record?) are fixed:
2561
2562 (i) An empty string was always treated as zero by the numeric comparison
2563 operators. This behaviour has been restored.
2564
2565 (ii) It is documented that the numeric comparison operators always treat
2566 their arguments as decimal numbers. This was broken in that numbers
2567 starting with 0 were being interpreted as octal.
2568
2569 While fixing these problems I realized that there was another issue that
2570 hadn't been noticed. Values of message_size_limit (both the global option
2571 and the transport option) were treated as octal if they started with 0.
2572 The documentation was vague. These values are now always treated as
2573 decimal, and I will make that clear in the documentation.
2574
2575
2576 Exim version 4.65
2577 -----------------
2578
2579 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2580 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2581 versions. (#438)
2582
2583 MH/01 Don't check that the operands of numeric comparison operators are
2584 integers when their expansion is in "skipping" mode (fixes bug
2585 introduced by 4.64-PH/07).
2586
2587 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2588 child addresses, Exim now panics and dies. Previously, because the count
2589 is held in a short int, deliveries were likely to be lost. As such a
2590 large number of recipients for a single message is ridiculous
2591 (performance will be very, very poor), I have chosen to impose a limit
2592 rather than extend the field.
2593
2594
2595 Exim version 4.64
2596 -----------------
2597
2598 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2599 leftover -K file (the existence of which was triggered by #402).
2600 While we were at it, introduced process PID as part of the -K
2601 filename. This should rule out race conditions when creating
2602 these files.
2603
2604 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2605 processing considerably. Previous code took too long for large mails,
2606 triggering a timeout which in turn triggers #401.
2607
2608 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2609 in the DK code in transports.c. sendfile() is not really portable,
2610 hence the _LINUX specificness.
2611
2612 TF/01 In the add_headers option to the mail command in an Exim filter,
2613 there was a bug that Exim would claim a syntax error in any
2614 header after the first one which had an odd number of characters
2615 in the field name.
2616
2617 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2618 callout verification, Exim cached a "reject" for the entire domain. This
2619 is correct for most verifications, but it is not correct for a recipient
2620 verification with use_sender or use_postmaster set, because in that case
2621 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2622 case of MAIL FROM:<> rejection from other early rejections (e.g.
2623 rejection of HELO). When verifying a recipient using a non-null MAIL
2624 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2625 Whatever the result of the callout, the value of the domain cache is
2626 left unchanged (for any other kind of callout, getting as far as trying
2627 RCPT means that the domain itself is ok).
2628
2629 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2630 gcc 4.1.1 threw up.
2631
2632 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2633 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2634 session, the daemon ignores ECONNECT errors and logs others; it now
2635 ignores EPIPE as well.
2636
2637 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2638 (quoted-printable decoding).
2639
2640 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2641 later the small subsequent patch to fix an introduced bug.
2642
2643 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2644
2645 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2646
2647 PH/08 An error is now given if message_size_limit is specified negative.
2648
2649 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2650 to be given (somewhat) arbitrary names.
2651
2652 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2653 in 4.64-PH/09.
2654
2655 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2656 miscellaneous code fixes
2657
2658 PH/10 Added the log_reject_target ACL modifier to specify where to log
2659 rejections.
2660
2661 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2662 hostname. This is wrong, because it relates to the incoming message (and
2663 probably the interface on which it is arriving) and not to the outgoing
2664 callout (which could be using a different interface). This has been
2665 changed to use the value of the helo_data option from the smtp transport
2666 instead - this is what is used when a message is actually being sent. If
2667 there is no remote transport (possible with a router that sets up host
2668 addresses), $smtp_active_hostname is used.
2669
2670 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2671 tweaks were necessary in order to get it to work (see also 21 below):
2672 (a) The code assumed that strncpy() returns a negative number on buffer
2673 overflow, which isn't the case. Replaced with Exim's string_format()
2674 function.
2675 (b) There were several signed/unsigned issues. I just did the minimum
2676 hacking in of casts. There is scope for a larger refactoring.
2677 (c) The code used strcasecmp() which is not a standard C function.
2678 Replaced with Exim's strcmpic() function.
2679 (d) The code set only $1; it now sets $auth1 as well.
2680 (e) A simple test gave the error "authentication client didn't specify
2681 service in request". It would seem that Dovecot has changed its
2682 interface. Fortunately there's a specification; I followed it and
2683 changed what the client sends and it appears to be working now.
2684
2685 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2686 decoding.
2687
2688 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2689 address A is aliased to B and C, where B exists and C does not. Without
2690 -v the output is "A verified" because verification stops after a
2691 successful redirection if more than one address is generated. However,
2692 with -v the child addresses are also verified. Exim was outputting "A
2693 failed to verify" and then showing the successful verification for C,
2694 with its parentage. It now outputs "B failed to verify", showing B's
2695 parentage before showing the successful verification of C.
2696
2697 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2698 look up a TXT record in a specific list after matching in a combined
2699 list.
2700
2701 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2702 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2703 they consult the DNS. I had assumed they would set it the way they
2704 wanted; and indeed my experiments on Linux seem to show that in some
2705 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2706 To be on the safe side, however, I have now made the interface to
2707 host_find_byname() similar to host_find_bydns(), with an argument
2708 containing the DNS resolver options. The host_find_byname() function now
2709 sets these options at its start, just as host_find_bydns() does. The smtp
2710 transport options dns_qualify_single and dns_search_parents are passed to
2711 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2712 of host_find_byname() use the default settings of RES_DEFNAMES
2713 (qualify_single) but not RES_DNSRCH (search_parents).
2714
2715 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2716 spool_read_header() do less string testing, by means of a preliminary
2717 switch on the second character of optional "-foo" lines. (This is
2718 overdue, caused by the large number of possibilities that now exist.
2719 Originally there were few.) While I was there, I also converted the
2720 str(n)cmp tests so they don't re-test the leading "-" and the first
2721 character, in the hope this might squeeze out yet more improvement.
2722
2723 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2724 flag allowing group syntax was set by the header_syntax check but not
2725 turned off, possible causing trouble later; (2) The flag was not being
2726 set at all for the header_verify test, causing "group"-style headers to
2727 be rejected. I have now set it in this case, and also caused header_
2728 verify to ignore an empty address taken from a group. While doing this, I
2729 came across some other cases where the code for allowing group syntax
2730 while scanning a header line wasn't quite right (mostly, not resetting
2731 the flag correctly in the right place). These bugs could have caused
2732 trouble for malformed header lines. I hope it is now all correct.
2733
2734 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2735 with the "reply" argument non-NULL. The code, however (which originally
2736 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2737 but it didn't always do it. This confused somebody who was copying the
2738 code for some other use. I have removed all the tests.
2739
2740 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2741 feature that was used to support insecure browsers during the U.S. crypto
2742 embargo. It requires special client support, and Exim is probably the
2743 only MTA that supported it -- and would never use it because real RSA is
2744 always available. This code has been removed, because it had the bad
2745 effect of slowing Exim down by computing (never used) parameters for the
2746 RSA_EXPORT functionality.
2747
2748 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2749 authenticator to fail if there's a tab character in the incoming data
2750 (there should never be unless someone is messing about, as it's supposed
2751 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2752 if the connection is using TLS or if the remote IP is the same as the
2753 local IP, and the "valid-client-cert option" if a client certificate has
2754 been verified.
2755
2756 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
2757 authenticators. This can be used for authorization after authentication
2758 succeeds. (In the case of plaintext, it servers for both authentication
2759 and authorization.)
2760
2761 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
2762 if any retry times were supplied.
2763
2764 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
2765 connection, where there is no client IP address to check. In this
2766 situation, the verify now always succeeds.
2767
2768 PH/25 Applied John Jetmore's -Mset patch.
2769
2770 PH/26 Added -bem to be like -Mset, but loading a message from a file.
2771
2772 PH/27 In a string expansion for a processed (not raw) header when multiple
2773 headers of the same name were present, leading whitespace was being
2774 removed from all of them, but trailing whitespace was being removed only
2775 from the last one. Now trailing whitespace is removed from each header
2776 before concatenation. Completely empty headers in a concatenation (as
2777 before) are ignored.
2778
2779 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2780 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2781
2782 PH/29 [Removed. This was a change that I later backed out, and forgot to
2783 correct the ChangeLog entry (that I had efficiently created) before
2784 committing the later change.]
2785
2786 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2787 address errors (4xx response to RCPT) over the same connection as other
2788 messages routed to the same hosts. Such deliveries are always "forced",
2789 so retry times are not inspected. This resulted in far too many retries
2790 for the affected addresses. The effect occurred only when there were more
2791 hosts than the hosts_max_try setting in the smtp transport when it had
2792 the 4xx errors. Those hosts that it had tried were not added to the list
2793 of hosts for which the message was waiting, so if all were tried, there
2794 was no problem. Two fixes have been applied:
2795
2796 (i) If there are any address or message errors in an SMTP delivery, none
2797 of the hosts (tried or untried) are now added to the list of hosts
2798 for which the message is waiting, so the message should not be a
2799 candidate for sending over the same connection that was used for a
2800 successful delivery of some other message. This seems entirely
2801 reasonable: after all the message is NOT "waiting for some host".
2802 This is so "obvious" that I'm not sure why it wasn't done
2803 previously. Hope I haven't missed anything, but it can't do any
2804 harm, as the worst effect is to miss an optimization.
2805
2806 (ii) If, despite (i), such a delivery is accidentally attempted, the
2807 routing retry time is respected, so at least it doesn't keep
2808 hammering the server.
2809
2810 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2811 in ${readsocket because some servers need this prod.
2812
2813 PH/32 Added some extra debug output when updating a wait-xxx database.
2814
2815 PH/33 The hint "could be header name not terminated by colon", which has been
2816 given for certain expansion errors for a long time, was not being given
2817 for the ${if def:h_colon_omitted{... case.
2818
2819 PH/34 The spec says: "With one important exception, whenever a domain list is
2820 being scanned, $domain contains the subject domain." There was at least
2821 one case where this was not true.
2822
2823 PH/35 The error "getsockname() failed: connection reset by peer" was being
2824 written to the panic log as well as the main log, but it isn't really
2825 panic-worthy as it just means the connection died rather early on. I have
2826 removed the panic log writing for the ECONNRESET error when getsockname()
2827 fails.
2828
2829 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2830 runs only) independently of the message's sender address. This meant
2831 that, if the 4xx error was in fact related to the sender, a different
2832 message to the same recipient with a different sender could confuse
2833 things. In particular, this can happen when sending to a greylisting
2834 server, but other circumstances could also provoke similar problems.
2835 I have changed the default so that the retry time for these errors is now
2836 based a combination of the sender and recipient addresses. This change
2837 can be overridden by setting address_retry_include_sender=false in the
2838 smtp transport.
2839
2840 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2841 remote server are returned as part of bounce messages. This was not
2842 happening for LMTP over a pipe (the lmtp transport), but now it is the
2843 same for both kinds of LMTP.
2844
2845 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2846 in header lines that were in fact CNAMEs. This is no longer the case.
2847
2848 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2849 and queue runs started by the daemon processed all messages. This has
2850 been fixed so that -R and -S can now usefully be given with -q<time>.
2851
2852 PH/40 Import PCRE release 6.7 (fixes some bugs).
2853
2854 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2855
2856 PH/42 Give an error if -q is specified more than once.
2857
2858 PH/43 Renamed the variables $interface_address and $interface_port as
2859 $received_ip_address and $received_port, to make it clear that these
2860 values apply to message reception, and not to the outgoing interface when
2861 a message is delivered. (The old names remain recognized, of course.)
2862
2863 PH/44 There was no timeout on the connect() call when using a Unix domain
2864 socket in the ${readsocket expansion. There now is.
2865
2866 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2867 be meaningful with "accept".
2868
2869 SC/01 Eximstats V1.43
2870 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2871
2872 SC/02 Eximstats V1.44
2873 Use a glob alias rather than an array ref in the generated
2874 parser. This improves both readability and performance.
2875
2876 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2877 Collect SpamAssassin and rejection statistics.
2878 Don't display local sender or destination tables unless
2879 there is data to show.
2880 Added average volumes into the top table text output.
2881
2882 SC/04 Eximstats V1.46
2883 Collect data on the number of addresses (recipients)
2884 as well as the number of messages.
2885
2886 SC/05 Eximstats V1.47
2887 Added 'Message too big' to the list of mail rejection
2888 reasons (thanks to Marco Gaiarin).
2889
2890 SC/06 Eximstats V1.48
2891 Mainlog lines which have GMT offsets and are too short to
2892 have a flag are now skipped.
2893
2894 SC/07 Eximstats V1.49 (Alain Williams)
2895 Added the -emptyok flag.
2896
2897 SC/08 Eximstats V1.50
2898 Fixes for obtaining the IP address from reject messages.
2899
2900 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2901 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2902 whitespace changes from 4.64-PH/27
2903
2904 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2905 match 4.64-PH/13
2906
2907 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2908 are found, allow negative numbers in numeric criteria)
2909
2910 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2911
2912 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2913 to match changes made in 4.64-PH/43
2914
2915 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2916
2917 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2918 "domain" is actually an IP address, and force a failure. This locks out
2919 those revolvers/nameservers that support "A-for-A" lookups, in
2920 contravention of the specifications.
2921
2922 PH/48 When a host name was looked up from an IP address, and the subsequent
2923 forward lookup of the name timed out, the host name was left in
2924 $sender_host_name, contrary to the specification.
2925
2926 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
2927 restricted to single-key lookups, Exim was not diagnosing an error if
2928 * or *@ was used with a query-style lookup.
2929
2930 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
2931
2932 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
2933 long ago, but noone interested enough thought of it. Let's just say that
2934 the "1.1" means that there are some new functions that weren't there at
2935 some point in the past.
2936
2937 PH/51 Error processing for expansion failure of helo_data from an smtp
2938 transport during callout processing was broken.
2939
2940 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
2941 tested/used via the -bh/-bhc/-bs options.
2942
2943 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
2944 bug, fixed in subsequent PCRE releases).
2945
2946 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
2947 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
2948
2949 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
2950
2951
2952 Exim version 4.63
2953 -----------------
2954
2955 SC/01 Use a glob alias rather than an array ref in eximstats generated
2956 parser. This improves both readability and performance.
2957
2958 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
2959 Don't display local sender or destination tables in eximstats unless
2960 there is data to show.
2961 Added average volumes into the eximstats top table text output.
2962
2963 SC/03 Collect data on the number of addresses (recipients) as well
2964 as the number of messages in eximstats.
2965
2966 TF/01 Correct an error in the documentation for the redirect router. Exim
2967 does (usually) call initgroups() when daemonizing.
2968
2969 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
2970 with consistent privilege compared to when running as a daemon.
2971
2972 TF/03 Note in the spec that $authenticated_id is not set for local
2973 submissions from trusted users.
2974
2975 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
2976 Thanks to Dean Brooks <dean@iglou.com> for the patch.
2977
2978 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
2979 by adding some example configuration directives to the default
2980 configuration file. A little bit of work is required to uncomment the
2981 directives and define how usernames and passwords are checked, but
2982 there is now a framework to start from.
2983
2984 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
2985 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
2986 without this. I don't know how relevant this is to other LDAP libraries.
2987
2988 PH/02 Add the verb name to the "unknown ACL verb" error.
2989
2990 PH/03 Magnus Holmgren's patch for filter_prepend_home.
2991
2992 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
2993
2994 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
2995 directory not expanded when it should be if an expanded home directory
2996 was set for the address (which is overridden by the transport).
2997
2998 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
2999 libradius.
3000
3001 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3002 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3003 because it is too late at that time, and has no effect.
3004
3005 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3006 security issue with \' (bugzilla #107). I could not use the
3007 PQescapeStringConn() function, because it needs a PGconn value as one of
3008 its arguments.
3009
3010 PH/08 When testing addresses using -bt, indicate those final addresses that
3011 are duplicates that would not cause an additional delivery. At least one
3012 person was confused, thinking that -bt output corresponded to deliveries.
3013 (Suppressing duplicates isn't a good idea as you lose the information
3014 about possibly different redirections that led to the duplicates.)
3015
3016 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3017 systems where poll() doesn't work, in particular OS X.
3018
3019 PH/10 Added more information to debugging output for retry time not reached.
3020
3021 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3022 operations in malware.c.
3023
3024 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3025 signatures.
3026
3027 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3028 syslog_duplication set false, log lines that would normally be written
3029 both the the main log and to the reject log were not written to syslog at
3030 all.
3031
3032 PH/14 In the default configuration, change the use of "message" in ACL warn
3033 statements to "add_header".
3034
3035 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3036 not followed by a command (e.g. "seen endif").
3037
3038 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3039 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3040 latter.
3041
3042 PH/17 Added extra conditions to the default value of delay_warning_condition
3043 so that it is now:
3044
3045 ${if or { \
3046 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3047 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3048 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3049 }{no}{yes}}
3050
3051 The Auto-Submitted: and various List- headers are standardised, whereas I
3052 don't think Precedence: ever was.
3053
3054 PH/18 Refactored debugging code in route_finduser() to show more information,
3055 in particular, the error code if getpwnam() issues one.
3056
3057 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3058 This is apparently needed in addition to the PH/07 change above to avoid
3059 any possible encoding problems.
3060
3061 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3062 but not after initializing Perl.
3063
3064 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3065 output them only if debugging. By default they are written stderr,
3066 apparently, which is not desirable.
3067
3068 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3069 queries.
3070
3071 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3072 --not options
3073
3074 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3075
3076 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3077 authenticated or an ident call has been made. Suppress the default
3078 values for $authenticated_id and $authenticated_sender (but permit -oMai
3079 and -oMas) when testing with -bh.
3080
3081 PH/24 Re-jigged the order of the tests in the default configuration so that the
3082 tests for valid domains and recipients precede the DNS black list and CSA
3083 tests, on the grounds that those ones are more expensive.
3084
3085 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3086 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3087 This bug exists in every version of Exim that I still have, right back to
3088 0.12.
3089
3090 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3091 However, an attempt to turn on case-sensitivity in a regex key by
3092 including (?-i) didn't work because the subject string was already
3093 lowercased, and the effects were non-intuitive. It turns out that a
3094 one-line patch can be used to allow (?-i) to work as expected.
3095
3096
3097 Exim version 4.62
3098 -----------------
3099
3100 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3101 other effects) broke the use of negated acl sub-conditions.
3102
3103 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3104 patch).
3105
3106 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3107 "Deny" causes Exim to reject the incoming connection with a 554 error.
3108 Unfortunately, if there is a major crisis, such as a disk failure,
3109 tcp-wrappers gives "deny", whereas what one would like would be some
3110 kind of temporary error. A kludge has been added to help with this.
3111 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3112 554 error is used if errno is still zero or contains ENOENT (which occurs
3113 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3114 451 error is used.
3115
3116 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3117
3118 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3119 errors. Otherwise a message that provokes a temporary error (when other
3120 messages do not) can cause a whole host to time out.
3121
3122 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3123 addresses were routed directly to files or pipes from a redirect router.
3124 File deliveries just didn't batch; pipe deliveries might have suffered
3125 odd errors.
3126
3127 PH/06 A failure to get a lock for a hints database would erroneously always say
3128 "Failed to get write lock", even when it was really a read lock.
3129
3130 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3131 of 0600. This has been changed to use the value of the lockfile_mode
3132 option (which defaults to 0600).
3133
3134 PH/08 Applied small patch from the Sieve maintainer.
3135
3136 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3137 folder from quota calculations, a direct delivery into this folder messed
3138 up the contents of the maildirsize file. This was because the regex was
3139 used only to exclude .Trash (or whatever) when the size of the mailbox
3140 was calculated. There was no check that a delivery was happening into an
3141 excluded directory. This bug has been fixed by ignoring all quota
3142 processing for deliveries into excluded directories.
3143
3144 PH/10 Added the maildirfolder_create_regex option to appendfile.
3145
3146
3147 Exim version 4.61
3148 -----------------
3149
3150 PH/01 The code for finding all the local interface addresses on a FreeBSD
3151 system running IPv6 was broken. This may well have applied to all BSD
3152 systems, as well as to others that have similar system calls. The broken
3153 code found IPv4 interfaces correctly, but gave incorrect values for the
3154 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3155 that it would not match correctly against @[] and not recognize the IPv6
3156 addresses as local.
3157
3158 PH/02 The ipliteral router was not recognizing addresses of the form user@
3159 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3160
3161 PH/03 Added disable_ipv6.
3162
3163 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3164 decoded form, because it is most often used to construct To: headers
3165 lines in autoreplies, and the decoded form may well be syntactically
3166 invalid. However, $reply_address has leading white space removed, and all
3167 newlines turned into spaces so that the autoreply transport does not
3168 grumble.
3169
3170 PH/05 If group was specified without a user on a router, and no group or user
3171 was specified on a transport, the group from the router was ignored.
3172
3173 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3174 for visible compile-time settings that can be used to change these
3175 numbers, for those that want even more. Backwards compatibility with old
3176 spool files has been maintained. However, going back to a previous Exim
3177 release will lost any variables that are in spool files.
3178
3179 PH/07 Two small changes when running in the test harness: increase delay when
3180 passing a TCP/IP connection to a new process, in case the original
3181 process has to generate a bounce, and remove special handling of
3182 127.0.0.2 (sic), which is no longer necessary.
3183
3184 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3185 be the same on different OS.
3186
3187 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3188 testing.
3189
3190 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3191 whether --show-vars was specified or not
3192
3193 JJ/02 exipick: Added support for new ACL variable spool format introduced
3194 in 4.61-PH/06
3195
3196 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3197 syntactically invalid From: or Reply-to: line, and a filter used this to
3198 generate an autoreply, and therefore failed to obtain an address for the
3199 autoreply, Exim could try to deliver to a non-existent relative file
3200 name, causing unrelated and misleading errors. What now happens is that
3201 it logs this as a hard delivery error, but does not attempt to create a
3202 bounce message.
3203
3204 PH/11 The exinext utility has a -C option for testing purposes, but although
3205 the given file was scanned by exinext itself; it wasn't being passed on
3206 when Exim was called.
3207
3208 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3209 an end-of-file indication when reading a command response.
3210
3211 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3212 compiled. In many other places in Exim, IPv6 addresses are always
3213 recognized, so I have changed this. It also means that IPv4 domain
3214 literals of the form [IPV4:n.n.n.n] are now always recognized.
3215
3216 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3217 used if the router is not running as root, for example, when verifying at
3218 ACL time, or when using -bh. The debugging output from this situation was
3219 non-existent - all you got was a failure to exec. I have made two
3220 changes:
3221
3222 (a) Failures to set uid/gid, the current directory, or a process leader
3223 in a subprocess such as that created by queryprogram now generate
3224 suitable debugging output when -d is set.
3225
3226 (b) The queryprogram router detects when it is not running as root,
3227 outputs suitable debugging information if -d is set, and then runs
3228 the subprocess without attempting to change uid/gid.
3229
3230 PH/15 Minor change to Makefile for building test_host (undocumented testing
3231 feature).
3232
3233 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3234 additional section of a DNS packet that returns MX or SRV records.
3235 Instead, it always explicitly searches for A/AAAA records. This avoids
3236 major problems that occur when a DNS server includes only records of one
3237 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3238 fixed another bug: if SRV records were looked up and the corresponding
3239 address records were *not* found in the additional section, the port
3240 values from the SRV records were lost.
3241
3242 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3243 using the correct key (the original address) when searching the retry
3244 rules in order to find which one to use for generating the retry hint.
3245
3246 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3247 adding the default one. Similarly, if it contains a Reply-To: header, the
3248 errors_reply_to option, if set, is not used.
3249
3250 PH/19 When calculating a retry time, Exim used to measure the "time since
3251 failure" by looking at the "first failed" field in the retry record. Now
3252 it does not use this if it is later than than the arrival time of the
3253 message. Instead it uses the arrival time. This makes for better
3254 behaviour in cases where some deliveries succeed, thus re-setting the
3255 "first failed" field. An example is a quota failure for a huge message
3256 when small messages continue to be delivered. Without this change, the
3257 "time since failure" will always be short, possible causing more frequent
3258 delivery attempts for the huge message than are intended.
3259 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3260
3261 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3262 $1, $2, $3) because the numerical variables can be reset during some
3263 expansion items (e.g. "match"), thereby losing the authentication data.
3264
3265 PH/21 Make -bV show the size of off_t variables so that the test suite can
3266 decide whether to run tests for quotas > 2G.
3267
3268 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3269 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3270 filecount value is greater than 2G or if a quota value is greater than 2G
3271 on a system where the size of off_t is not greater than 4, a panic error
3272 is given.
3273
3274 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3275 never match. The debug and -bh output now contains an explicit error
3276 message indicating a malformed IPv4 address or mask.
3277
3278 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3279 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3280 PH/23 above applies.
3281
3282 PH/25 Do not write to syslog when running in the test harness. The only
3283 occasion when this arises is a failure to open the main or panic logs
3284 (for which there is an explicit test).
3285
3286 PH/26 Added the /no_tell option to "control=freeze".
3287
3288 PH/27 If a host name lookup failed very early in a connection, for example, if
3289 the IP address matched host_lookup and the reverse lookup yielded a name
3290 that did not have a forward lookup, an error message of the form "no IP
3291 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3292 could be logged. Now it outputs the IP address instead of "NULL".
3293
3294 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3295 allows the sender and the authenticated sender to be set when
3296 submitting a message from within Exim. Since child_open_exim() is
3297 documented for local_scan(), the new function should be too.
3298
3299 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3300 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3301 results in an empty string is now treated as unset.
3302
3303 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3304
3305 PH/31 Added sender_verify_fail logging option.
3306
3307 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3308 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3309 tidied the source and removed it altogether.
3310
3311 PH/33 When a queue run was abandoned because the load average was too high, a
3312 log line was always written; now it is written only if the queue_run log
3313 selector is set. In addition, the log line for abandonment now contains
3314 information about the queue run such as the pid. This is always present
3315 in "start" and "stop" lines but was omitted from the "abandon" line.
3316
3317 PH/34 Omit spaces between a header name and the colon in the error message that
3318 is given when verify = headers_syntax fails (if there are lots of them,
3319 the message gets confusing).
3320
3321 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3322 names, as there are now some PTR records that contain slashes. This check
3323 is only to protect against broken name servers that fall over on strange
3324 characters, so the fact that it applies to all lookups doesn't matter.
3325
3326 PH/36 Now that the new test suite is complete, we can remove some of the
3327 special code in Exim that was needed for the old test suite. For example,
3328 sorting DNS records because real resolvers return them in an arbitrary
3329 order. The new test suite's fake resolver always returns records in the
3330 same order.
3331
3332 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3333 bounces) except when queue_only is set, to avoid logging races between
3334 the different processes.
3335
3336 PH/38 Panic-die if .include specifies a non-absolute path.
3337
3338 PH/39 A tweak to the "H" retry rule from its user.
3339
3340 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3341 a label. They prevented compilation on older perls.
3342
3343 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3344 a warning to be raised on newish perls.
3345
3346 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3347 on queue. Changes to match documented behaviour of showing count of
3348 messages matching specified criteria.
3349
3350 PH/40 Changed the default ident timeout from 30s to 5s.
3351
3352 PH/41 Added support for the use of login_cap features, on those BSD systems
3353 that have them, for controlling the resources used by pipe deliveries.
3354
3355 PH/42 The content-scanning code uses fopen() to create files in which to put
3356 message data. Previously it was not paying any attention to the mode of
3357 the files. Exim runs with umask(0) because the rest of the code creates
3358 files with open(), and sets the required mode explicitly. Thus, these
3359 files were ending up world-writeable. This was not a big issue, because,
3360 being within the spool directory, they were not world-accessible. I have
3361 created a function called modefopen, which takes an additional mode
3362 argument. It sets umask(777), creates the file, chmods it to the required
3363 mode, then resets the umask. All the relevant calls to fopen() in the
3364 content scanning code have been changed to use this function.
3365
3366 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3367 to 24 hours. This avoids potential overflow problems when processing G
3368 and H retry rules. I suspect nobody ever tinkers with this value.
3369
3370 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3371
3372 PH/45 When the plaintext authenticator is running as a client, the server's
3373 challenges are checked to ensure they are valid base64 strings. By
3374 default, the authentication attempt is cancelled if an invalid string is
3375 received. Setting client_ignore_invalid_base64 true ignores these errors.
3376 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3377 they are received. Thus, the responses can be made to depend on the
3378 challenges. If an invalid string is ignored, an empty string is placed in
3379 the variable.
3380
3381 PH/46 Messages that are created by the autoreply transport now contains a
3382 References: header, in accordance with RFCs 2822 and 3834.
3383
3384 PH/47 Added authenticated_sender_force to the smtp transport.
3385
3386 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3387
3388 PH/49 Installed latest patch from the Sieve maintainer.
3389
3390 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3391 was also set, the appendfile transport was unnecessarily scanning a
3392 directory of message files (e.g. for maildir delivery) to find the count
3393 of files (along with the size), even though it did not need this
3394 information. It now does the scan only if it needs to find either the
3395 size of the count of files.
3396
3397 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3398
3399 PH/52 Two bugs concerned with error handling when the smtp transport is
3400 used in LMTP mode:
3401
3402 (i) Exim was not creating retry information for temporary errors given
3403 for individual recipients after the DATA command when the smtp transport
3404 was used in LMTP mode. This meant that they could be retried too
3405 frequently, and not timed out correctly.
3406
3407 (ii) Exim was setting the flag that allows error details to be returned
3408 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3409 recipients that were returned after the DATA command.
3410
3411 PH/53 This is related to PH/52, but is more general: for any failing address,
3412 when detailed error information was permitted to be returned to the
3413 sender, but the error was temporary, then after the final timeout, only
3414 "retry timeout exceeded" was returned. Now it returns the full error as
3415 well as "retry timeout exceeded".
3416
3417 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3418 do this, and (what is worse) MTAs that accept it.
3419
3420 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3421 will now be deprecated.
3422
3423 PH/56 New os.c-cygwin from the Cygwin maintainer.
3424
3425 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3426 formats (previously only available in exim formats via -bpr, -bpru,
3427 and -bpra. Now also available in native and exiqgrep formats)
3428
3429 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3430 with very large, slow to parse queues
3431
3432 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3433
3434 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3435
3436 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3437 responses to authentication challenges, though it was showing the
3438 challenges; (ii) I've removed the CR characters from the debug output for
3439 SMTP output lines.
3440
3441 PH/58 Allow for the insertion of a newline as well as a space when a string
3442 is turned into more than one encoded-word during RFC 2047 encoding. The
3443 Sieve code now uses this.
3444
3445 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3446 data_4xx, lost_connection, tls_required.
3447
3448 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3449 message was being sent as an SMTP response.
3450
3451 PH/61 Add -l and -k options to exicyclog.
3452
3453 PH/62 When verifying, if an address was redirected to one new address, so that
3454 verification continued, and the new address failed or deferred after
3455 having set something in $address_data, the value of $address_data was not
3456 passed back to the ACL. This was different to the case when no
3457 redirection occurred. The value is now passed back in both cases.
3458
3459 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3460 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3461 use login_cap.h, so on its own it isn't the distinguishing feature. The
3462 new name refers directly to the setclassresources() function.
3463
3464 PH/65 Added configuration files for NetBSD3.
3465
3466 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3467
3468 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3469 is preferred over IPv4.
3470
3471 PH/68 The bounce_return_message and bounce_return_body options were not being
3472 honoured for bounces generated during the reception of non-SMTP messages.
3473 In particular, this applied to messages rejected by the ACL. This bug has
3474 been fixed. However, if bounce_return_message is true and bounce_return_
3475 body is false, the headers that are returned for a non-SMTP message
3476 include only those that have been read before the error was detected.
3477 (In the case of an ACL rejection, they have all been read.)
3478
3479 PH/69 The HTML version of the specification is now built in a directory called
3480 spec_html instead of spec.html, because the latter looks like a path with
3481 a MIME-type, and this confuses some software.
3482
3483 PH/70 Catch two compiler warnings in sieve.c.
3484
3485 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3486 function verify_get_ident() calls ip_connect() to connect a socket, but
3487 if the "connect()" function timed out, ip_connect() used to close the
3488 socket. However, verify_get_ident() also closes the socket later, and in
3489 between Exim writes to the log, which may get opened at this point. When
3490 the socket was closed in ip_connect(), the log could get the same file
3491 descriptor number as the socket. This naturally causes chaos. The fix is
3492 not to close the socket in ip_connect(); the socket should be closed by
3493 the function that creates it. There was only one place in the code where
3494 this was missing, in the iplookup router, which I don't think anybody now
3495 uses, but I've fixed it anyway.
3496
3497 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3498 well as to direct DNS lookups. Otherwise the handling of names in host
3499 lists is inconsistent and therefore confusing.
3500
3501
3502 Exim version 4.60
3503 -----------------
3504
3505 PH/01 Two changes to the default runtime configuration:
3506
3507 (1) Move the checks for relay_from_hosts and authenticated clients from
3508 after to before the (commented out) DNS black list checks.
3509
3510 (2) Add control=submission to the relay_from_hosts and authenticated
3511 clients checks, on the grounds that messages accepted by these
3512 statements are most likely to be submissions.
3513
3514 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3515
3516 (1) Generate an error if the third argument for the ${prvs expansion is
3517 not a single digit.
3518
3519 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3520 string.
3521
3522 (3) Reset the variables that are obtained from the first argument of
3523 ${prvscheck and used in the second argument before leaving the code,
3524 because their memory is reclaimed, so using them afterwards may do
3525 silly things.
3526
3527 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3528 one (it's much easier than Tom thought :-).
3529
3530 (5) Because of (4), we can now allow for the use of $prvscheck_result
3531 inside the third argument.
3532
3533 PH/03 For some reason, the default setting of PATH when running a command from
3534 a pipe transport was just "/usr/bin". I have changed it to
3535 "/bin:/usr/bin".
3536
3537 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
3538 anything to be listed in the output from -bV.
3539
3540 PH/05 When a filter generated an autoreply, the entire To: header line was
3541 quoted in the delivery log line, like this:
3542
3543 => >A.N.Other <ano@some.domain> <original@ddress> ...
3544
3545 This has been changed so that it extracts the operative address. There
3546 may be more than one such address. If so, they are comma-separated, like
3547 this:
3548
3549 => >ano@some.domain,ona@other.domain <original@ddress> ...
3550
3551 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3552 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
3553 not being looked up in the rDNS to get a host name, Exim was showing the
3554 IP address twice in Received: lines, even though the IP addresses were
3555 identical. For example:
3556
3557 Received: from [1.2.3.4] (helo=[1.2.3.4])
3558
3559 However, if the real host name was known, it was omitting the HELO data
3560 if it matched the actual IP address. This has been tidied up so that it
3561 doesn't show the same IP address twice.
3562
3563 PH/07 When both +timestamp and +memory debugging was on, the value given by
3564 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3565 called by the debug printing, thereby overwriting the timestamp buffer.
3566 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3567
3568 PH/08 When the original message was included in an autoreply transport, it
3569 always said "this is a copy of the message, including all the headers",
3570 even if body_only or headers_only was set. It now gives an appropriate
3571 message.
3572
3573 PH/09 Applied a patch from the Sieve maintainer which:
3574
3575 o fixes some comments
3576 o adds the (disabled) notify extension core
3577 o adds some debug output for the result of if/elsif tests
3578 o points to the current vacation draft in the documentation
3579 and documents the missing references header update
3580
3581 and most important:
3582
3583 o fixes a bug in processing the envelope test (when testing
3584 multiple envelope elements, the last element determined the
3585 result)
3586
3587 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3588 Electronic Mail") by including:
3589
3590 Auto-submitted: auto-generated
3591
3592 in the messages that it generates (bounce messages and others, such as
3593 warnings). In the case of bounce messages for non-SMTP messages, there was
3594 also a typo: it was using "Auto_submitted" (underscore instead of
3595 hyphen). Since every message generated by Exim is necessarily in response
3596 to another message, thes have all been changed to:
3597
3598 Auto-Submitted: auto-replied
3599
3600 in accordance with these statements in the RFC:
3601
3602 The auto-replied keyword:
3603
3604 - SHOULD be used on messages sent in direct response to another
3605 message by an automatic process,
3606
3607 - MUST NOT be used on manually-generated messages,
3608
3609 - MAY be used on Delivery Status Notifications (DSNs) and Message
3610 Disposition Notifications (MDNs),
3611
3612 - MUST NOT be used on messages generated by automatic or periodic
3613 processes, except for messages which are automatic responses to
3614 other messages.
3615
3616 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3617 to the default Received: header definition.
3618
3619 PH/12 Added log selector acl_warn_skipped (default on).
3620
3621 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3622 variables because (a) they are in the wrong storage pool and (b) even if
3623 they were copied, it wouldn't work properly because of the caching.
3624
3625 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3626 checking when decoding. Apparently there are clients that generate
3627 overlong encoded strings. Why am I not surprised?
3628
3629 PH/15 If the first argument of "${if match_address" was not empty, but did not
3630 contain an "@" character, Exim crashed. Now it writes a panic log message
3631 and treats the condition as false.
3632
3633 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3634
3635 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3636 extension "envelope-auth". The code is finished and in agreement with
3637 other implementations, but there is no documentation so far and in fact,
3638 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3639 not changing the active code.
3640
3641 Print executed "if" and "elsif" statements when debugging is used. This
3642 helps a great deal to understand what a filter does.
3643
3644 Document more things not specified clearly in RFC3028. I had all this
3645 sorted out, when out of a sudden new issues came to my mind. Oops."
3646
3647 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3648 (Bugzilla #53).
3649
3650 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3651 canonical form (as documented). However, after a host name lookup from
3652 the IP address, check_host() was doing a simple string comparison with
3653 addresses acquired from the DNS when checking that the found name did
3654 have the original IP as one of its addresses. Since any found IPv6
3655 addresses are likely to be in abbreviated form, the comparison could
3656 fail. Luckily, there already exists a function for doing the comparison
3657 by converting both addresses to binary, so now that is used instead of
3658 the text comparison.
3659
3660 PH/20 There was another similar case to PH/19, when a complete host name was
3661 given in a host list; looking up its IP address could give an abbreviated
3662 form, whereas the current host's name might or might not be abbreviated.
3663 The same fix has been applied.
3664
3665
3666 Exim version 4.54
3667 -----------------
3668
3669 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3670 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3671 It now does.
3672
3673 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3674 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3675
3676 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3677
3678 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3679 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3680 Also, for "Auto-Submitted", treat anything other than "no" as
3681 non-personal, in accordance with RFC 3834. (Previously it treated
3682 anything starting "auto-" as non-personal.)
3683
3684 TF/01 The control=submission/name=... option had a problem with syntax
3685 errors if the name included a slash character. The /name= option
3686 now slurps the rest of the string, so it can include any characters
3687 but it must come last in the list of options (after /sender_retain
3688 or /domain=).
3689
3690 PH/05 Some modifications to the interface to the fake nameserver for the new
3691 testing suite.
3692
3693
3694
3695 Exim version 4.53
3696 -----------------
3697
3698 TK/01 Added the "success_on_redirect" address verification option. See
3699 NewStuff for rationale and an example.
3700
3701 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3702
3703 PH/02 Patch to exigrep to allow it to work on syslog lines.
3704
3705 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3706 fread() to skip over the body file's header line, because in Cygwin the
3707 header line is locked and is inaccessible.
3708
3709 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3710 co-exist for some time) to make it clear that it is the Exim ID that is
3711 referenced, not the Message-ID: header line.
3712
3713 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3714 string_format() function, because snprintf() does not exist on all
3715 operating systems.
3716
3717 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3718 ${stat: expansion item.
3719
3720 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3721 protocol synchronization error", to keep the pedants happy.
3722
3723 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
3724 well as for IRIX systems, when gcc is being used. See the host.c source
3725 file for comments.
3726
3727 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3728
3729 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3730 setting.
3731
3732 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
3733 transport and to the smtp transport in LMTP mode.
3734
3735 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
3736
3737 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
3738 run a filter in a subprocess. This could lead to confusion in subsequent
3739 lookups in the parent process. There should also be a search_tidyup() at
3740 the end of the subprocess.
3741
3742 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
3743 only if the host matched helo_try_verify_hosts, which caused the
3744 verification to occur when the EHLO/HELO command was issued. The ACL just
3745 tested the remembered result. Now, if a previous verification attempt has
3746 not happened, "verify = helo" does it there and then.
3747
3748 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
3749
3750 TK/03 Fix log output including CR from clamd.
3751
3752 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
3753 exist provoked a memory error which could cause a segfault.
3754
3755 PH/15 Installed PCRE 6.2
3756
3757 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
3758
3759 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
3760 of the problem. Specifically, suggested +O2 rather than +O1 for the
3761 HP-UX compiler.
3762
3763 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
3764
3765 PH/20 If a delivery was routed to a non-standard port by means of an SRV
3766 record, the port was not correctly logged when the outgoing_port log
3767 selector was set (it logged the transort's default port).
3768
3769 PH/21 Added support for host-specific ports to manualroute, queryprogram,
3770 fallback_hosts, and "hosts" in the smtp transport.
3771
3772 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
3773 host errors such as "Connection refused".
3774
3775 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
3776 authentication with radiusclient 0.4.9:
3777
3778 - Error returned from rc_read_config was caught wrongly
3779 - Username/password not passed on to radius server due to wrong length.
3780
3781 The presumption is that some radiusclient API changes for 4.51/PH/17
3782 were not taken care of correctly. The code is still untested by me (my
3783 Linux distribution still has 0.3.2 of radiusclient), but it was
3784 contributed by a Radius user.
3785
3786 PH/24 When doing a callout, the value of $domain wasn't set correctly when
3787 expanding the "port" option of the smtp transport.
3788
3789 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
3790 while reading a MIME header. Thanks to Tom Hughes for a patch.
3791
3792 PH/24 Include config.h inside local_scan.h so that configuration settings are
3793 available.
3794
3795 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
3796 that in an ACL for RCPT (for example), you can examine exactly what was
3797 received.
3798
3799 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
3800 commands, but it was not correctly comparing the address with the actual
3801 client host address. Thus, it would show the EHLO address in Received:
3802 header lines when this was not necessary.
3803
3804 PH/27 Added the % operator to ${eval:}.
3805
3806 PH/28 Exim tries to create and chdir to its spool directory when it starts;
3807 it should be ignoring failures (because with -C, for example, it has lost
3808 privilege). It wasn't ignoring creation failures other than "already
3809 exists".
3810
3811 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
3812 -bV or -d is used.
3813
3814 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
3815 because an input line was too long, either on its own, or by virtue of
3816 too many continuations, the temporary file was not being removed, and the
3817 return code was incorrect.
3818
3819 PH/31 Missing "BOOL" in function definition in filtertest.c.
3820
3821 PH/32 Applied Sieve patches from the maintainer.
3822
3823 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
3824
3825 PH/33 Added "verify = not_blind".
3826
3827 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
3828 Local/Makefile (with some defaults set). These are used in built scripts
3829 such as exicyclog, but they have never been used in the exim_install
3830 script (though there are many overriding facilities there). I have
3831 arranged that the exim_install script now takes note of these two
3832 settings.
3833
3834 PH/35 Installed configuration files for Dragonfly.
3835
3836 PH/36 When a locally submitted message by a trusted user did not contain a
3837 From: header, and the sender address was obtained from -f or from an SMTP
3838 MAIL command, and the trusted user did not use -F to supply a sender
3839 name, $originator_name was incorrectly used when constructing a From:
3840 header. Furthermore, $originator_name was used for submission mode
3841 messages from external hosts without From: headers in a similar way,
3842 which is clearly wrong.
3843
3844 PH/37 Added control=suppress_local_fixups.
3845
3846 PH/38 When log_selector = +received_sender was set, and the addition of the
3847 sender made the log line's construction buffer exactly full, or one byte
3848 less than full, an overflow happened when the terminating "\n" was
3849 subsequently added.
3850
3851 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
3852 when the result of a list match is failure because a DNS lookup failed.
3853
3854 PH/40 RM_COMMAND is now used in the building process.
3855
3856 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
3857 the "build-* directories that it finds.
3858
3859 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
3860 address in a domain literal was a prefix of an interface address.
3861
3862 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
3863 when verifying a sender address, unless rewrite_headers is false.
3864
3865 PH/44 Wrote a long comment about why errors_to addresses are verified as
3866 recipients, not senders.
3867
3868 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
3869 the ratelimit ACL was added.
3870
3871 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
3872
3873 PH/46 Added extra information about PostgreSQL errors to the error string.
3874
3875 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
3876 avoiding the need to install special zones in a real server. This is
3877 backwards compatible; if it can't find the fake resolver, it drops back.
3878 Thus, both old and new test suites can be run.
3879
3880 TF/02 Added util/ratelimit.pl
3881
3882 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
3883 clock is set back in time.
3884
3885 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
3886 Candler <B.Candler@pobox.com>.
3887
3888 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
3889 OK for addresses that are the result of redirections.
3890
3891 PH/48 A number of further additions for the benefit of the new test suite,
3892 including a fake gethostbyname() that interfaces to the fake DNS resolver
3893 (see PH/47 above).
3894
3895 TF/06 The fix for widen_domains has also been applied to qualify_single and
3896 search_parents which are the other dnslookup options that can cause
3897 header rewrites.
3898
3899 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
3900 type ("H").
3901
3902 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
3903
3904 TF/07 Exim produced the error message "an SRV record indicated no SMTP
3905 service" if it encountered an MX record with an empty target hostname.
3906 The message is now "an MX or SRV record indicated no SMTP service".
3907
3908 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
3909 if the DNS of the sending site is misconfigured. This is quite a
3910 common situation. This change restores the behaviour of treating a
3911 helo verification defer as a failure.
3912
3913 PH/51 If self=fail was set on a router, the bounce message did not include the
3914 actual error message.
3915
3916
3917 Exim version 4.52
3918 -----------------
3919
3920 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
3921
3922 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
3923 command itself ended in error, the underlying message about the transport
3924 filter timeout was being overwritten with the pipe command error. Now the
3925 underlying error message should be appended to the second error message.
3926
3927 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
3928
3929 PH/02 Reduce the amount of output that "make" produces by default. Full output
3930 can still be requested.
3931
3932 PH/03 The warning log line about a condition test deferring for a "warn" verb
3933 was being output only once per connection, rather than after each
3934 occurrence (because it was using the same function as for successful
3935 "warn" verbs). This seems wrong, so I have changed it.
3936
3937 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
3938 it should not have, which might have caused a crash in the right
3939 circumstances, but probably never did.
3940
3941 PH/04 Installed a modified version of Tony Finch's patch to make submission
3942 mode fix the return path as well as the Sender: header line, and to
3943 add a /name= option so that you can make the user's friendly name appear
3944 in the header line.
3945
3946 TF/03 Added the control = fakedefer ACL modifier.
3947
3948 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
3949 Mark Lowes for thorough testing.
3950
3951 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
3952
3953 TK/03 Merged latest SRS patch from Miles Wilton.
3954
3955 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
3956 with the definition in sysexits.h (which is #included earlier).
3957 Fortunately, Exim does not actually use EX_OK. The code used to try to
3958 preserve the sysexits.h value, by assuming that macro definitions were
3959 scanned for macro replacements. I have been disabused of this notion,
3960 so now the code just undefines EX_OK before #including unistd.h.
3961
3962 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
3963 in the smtp transport. When a block could not be written in a single
3964 write() function, the timeout was being re-applied to each part-write.
3965 This seems wrong - if the receiver was accepting one byte at a time it
3966 would take for ever. The timeout is now adjusted when this happens. It
3967 doesn't have to be particularly precise.
3968
3969 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
3970 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
3971
3972 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
3973 without a domain if the check to <postmaster@domain> fails.
3974
3975 SC/01 Eximstats: added -xls and the ability to specify output files
3976 (patch written by Frank Heydlauf).
3977
3978 SC/02 Eximstats: use FileHandles for outputting results.
3979
3980 SC/03 Eximstats: allow any combination of xls, txt, and html output.
3981
3982 SC/04 Eximstats: fixed display of large numbers with -nvr option
3983
3984 SC/05 Eximstats: fixed merging of reports with empty tables.
3985
3986 SC/06 Eximstats: added the -include_original_destination flag
3987
3988 SC/07 Eximstats: removed tabs and trailing whitespace.
3989
3990 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
3991
3992 TK/06 MBOX spool code: Add real "From " MBOX separator line
3993 so the .eml file is really in mbox format (even though
3994 most programs do not really care). Patch from Alex Miller.
3995
3996 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
3997 The latter is generated from $received_to and is only set if the
3998 message has one envelope recipient. SA can use these headers,
3999 obviously out-of-the-box. Patch from Alex Miller.
4000
4001 PH/08 The ${def test on a variable was returning false if the variable's
4002 value was "0", contrary to what the specification has always said!
4003 The result should be true unless the variable is empty.
4004
4005 PH/09 The syntax error of a character other than { following "${if
4006 def:variable_name" (after optional whitespace) was not being diagnosed.
4007 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
4008 accidental colon was present, for example, could give incorrect results.
4009
4010 PH/10 Tidied the code in a number of places where the st_size field of a stat()
4011 result is used (not including appendfile, where other changes are about
4012 to be made).
4013
4014 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
4015 This involved changing a lot of size variables from int to off_t. It
4016 should work with maildirs and everything.
4017
4018 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
4019 spamd dying while we are connected to it.
4020
4021 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
4022 <jgh@wizmail.org>
4023
4024 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
4025 function for BDB 4.3.
4026
4027 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
4028
4029 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
4030 the sources for PCRE have been re-arranged and more files are now
4031 involved.
4032
4033 PH/15 The code I had for printing potentially long long variables in PH/11
4034 above was not the best (it lost precision). The length of off_t variables
4035 is now inspected at build time, and an appropriate printing format (%ld
4036 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
4037 to be "long long int" or "long int". This is needed for the internal
4038 formatting function string_vformat().
4039
4040 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
4041 the configuration file to be ":syslog", then the script "guesses" where
4042 the logs files are, rather than using the compiled in default. In our
4043 case the guess is not the same as the compiled default, so the script
4044 suddenly stopped working when I started to use syslog. The patch checks
4045 to see if log_file_path is "". If so, it attempts to read it from exim
4046 with no configuration file to get the compiled in version, before it
4047 falls back to the previous guessing code."
4048
4049 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
4050 implementing BATV in an Exim configuration. See NewStuff for the gory
4051 details.
4052
4053 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
4054 Makefile that are specific to HP-UX.
4055
4056 PH/18 If the "use_postmaster" option was set for a recipient callout together
4057 with the "random" option, the postmaster address was used as the MAIL
4058 FROM address for the random test, but not for the subsequent recipient
4059 test. It is now used for both.
4060
4061 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
4062 patch removes a few documentation additions to RFC 3028, because the
4063 latest draft now contains them. It adds the new en;ascii-case comparator
4064 and a new error check for 8bit text in MIME parts. Comparator and
4065 require names are now matched exactly. I enabled the subaddress
4066 extension, but it is not well tested yet (read: it works for me)."
4067
4068 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
4069 rework some of the code of TK/09 above to avoid the hardwired use of
4070 "%lld" and "long long". Replaced the call to snprintf() with a call to
4071 string_vformat().
4072
4073 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
4074 records point to non-existent hosts", "retry timeout exceeded", and
4075 "retry time not reached for any host after a long failure period".
4076
4077 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
4078 experimental DomainKeys support:
4079
4080 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
4081 (2) On an error such as an illegally used "control", the wrong name for
4082 the control was given.
4083
4084 These problems did NOT occur unless DomainKeys support was compiled.
4085
4086 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
4087
4088 PH/24 Added ${if match_ip condition.
4089
4090 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
4091 databases so that it will be absolutely obvious if a crash occurs in the
4092 DB library. This is a regular occurrence (often caused by mis-matched
4093 db.h files).
4094
4095 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
4096 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
4097 picked up on a user's system that detects such things. There doesn't seem
4098 to be a gcc warning option for this - only an attribute that has to be
4099 put on the function's prototype. It seems that in Fedora Core 4 they have
4100 set this on a number of new functions. No doubt there will be more in due
4101 course.
4102
4103 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
4104 specify a transport. However, if an address that was verified by such a
4105 router was the subject of a callout, Exim crashed because it tried to
4106 read the rcpt_include_affixes from the non-existent transport. Now it
4107 just assumes that the setting of that option is false. This bug was
4108 introduced by 4.51/PH/31.
4109
4110 PH/28 Changed -d+all to exclude +memory, because that information is very
4111 rarely of interest, but it makes the output a lot bigger. People tend to
4112 do -d+all out of habit.
4113
4114 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
4115 code in os-type was giving problems when libc.so lives in lib64, like on
4116 x86_64 Fedora Core.
4117
4118 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
4119 aren't the modern standard, and it seems that some systems' include files
4120 don't always have them. Exim was already checking for some of the newer
4121 ones like T_AAAA, and defining it itself. I've added checks for all the
4122 record types that Exim uses.
4123
4124 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
4125 not automatically generating a new one, as it is supposed to. This
4126 prevented TLS from working. If the file did exist, but contained invalid
4127 data, a new version was generated, as expected. It was only the case of a
4128 non-existent file that was broken.
4129
4130 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
4131 with a change in libdomainkeys > 0.64.
4132
4133 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
4134 from DNS. If the selector record carries the flag, it now has
4135 precedence over the domain-wide flag.
4136
4137 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
4138
4139 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
4140 the use of a port name that isn't defined in /etc/services) occurred, the
4141 message was deferred as in a normal delivery, and thus remained on the
4142 spool, instead of being failed because of the mua_wrapper setting. This
4143 is now fixed, and I tidied up some of the mua_wrapper messages at the
4144 same time.
4145
4146 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
4147 the messages in a hash of arrays rather than using individual hashes.
4148 This is a bit cleaner and results in dramatic memory savings, albeit
4149 at a slight CPU cost.
4150
4151 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
4152 as requested by Marc Sherman.
4153
4154 SC/10 Eximstats: added histograms for user specified patterns as requested
4155 by Marc Sherman.
4156
4157 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
4158
4159 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
4160 fopen() in the content-scanning modules that did not already have it.
4161
4162
4163 Exim version 4.51