8d1b33bc249c4d41791b1b9bf88f6f7d5c0e4856
[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 GF/01 DEFER rather than ERROR on redis cluster MOVED response.
12 When redis_servers is set to a list of > 1 element, and the Redis servers
13 in that list are in cluster configuration, convert the REDIS_REPLY_ERROR
14 case of MOVED into a DEFER case instead, thus moving the query onto the
15 next server in the list. For a cluster of N elements, all N servers must
16 be defined in redis_servers.
17
18 GF/02 Catch and remove uninitialized value warning in exiqsumm
19 Check for existence of @ARGV before looking at $ARGV[0]
20
21 JH/01 Replace the store_release() internal interface with store_newblock(),
22 which internalises the check required to safely use the old one, plus
23 the allocate and data copy operations duplicated in both (!) of the
24 extant use locations.
25
26 JH/02 Disallow '/' characters in queue names specified for the "queue=" ACL
27 modifier. This matches the restriction on the commandline.
28
29 JH/03 Fix pgsql lookup for multiple result-tuples with a single column.
30 Previously only the last row was returned.
31
32 JH/04 Bug 2217: Tighten up the parsing of DKIM signature headers. Previously
33 we assumed that tags in the header were well-formed, and parsed the
34 element content after inspecting only the first char of the tag.
35 Assumptions at that stage could crash the receive process on malformed
36 input.
37
38 JH/05 Bug 2215: Fix crash associated with dnsdb lookup done from DKIM ACL.
39 While running the DKIM ACL we operate on the Permanent memory pool so that
40 variables created with "set" persist to the DATA ACL. Also (at any time)
41 DNS lookups that fail create cache records using the Permanent pool. But
42 expansions release any allocations made on the current pool - so a dnsdb
43 lookup expansion done in the DKIM ACL releases the memory used for the
44 DNS negative-cache, and bad things result. Solution is to switch to the
45 Main pool for expansions.
46 While we're in that code, add checks on the DNS cache during store_reset,
47 active in the testsuite.
48 Problem spotted, and debugging aided, by Wolfgang Breyha.
49
50 JH/06 Fix issue with continued-connections when the DNS shifts unreliably.
51 When none of the hosts presented to a transport match an already-open
52 connection, close it and proceed with the list. Previously we would
53 queue the message. Spotted by Lena with Yahoo, probably involving
54 round-robin DNS.
55
56 JH/07 Bug 2214: Fix SMTP responses resulting from non-accept result of MIME ACL.
57 Previously a spurious "250 OK id=" response was appended to the proper
58 failure response.
59
60 JH/08 The "support for" informational output now, which built with Content
61 Scanning support, has a line for the malware scanner interfaces compiled
62 in. Interface can be individually included or not at build time.
63
64 JH/09 The "aveserver", "kavdaemon" and "mksd" interfaces are now not included
65 by the template makefile "src/EDITME". The "STREAM" support for an older
66 ClamAV interface method is removed.
67
68 JH/10 Bug 2223: Fix mysql lookup returns for the no-data case (when the number of
69 rows affected is given instead).
70
71 JH/11 The runtime Berkeley DB library version is now additionally output by
72 "exim -d -bV". Previously only the compile-time version was shown.
73
74 JH/12 Bug 2230: Fix cutthrough routing for nonfirst messages in an initiating
75 SMTP connection. Previously, when one had more receipients than the
76 first, an abortive onward connection was made. Move to full support for
77 multiple onward connections in sequence, handling cutthrough connection
78 for all multi-message initiating connections.
79
80 JH/13 Bug 2229: Fix cutthrough routing for nonstandard port numbers defined by
81 routers. Previously, a multi-recipient message would fail to match the
82 onward-connection opened for the first recipient, and cause its closure.
83
84 JH/14 Bug 2174: A timeout on connect for a callout was also erroneously seen as
85 a timeout on read on a GnuTLS initiating connection, resulting in the
86 initiating connection being dropped. This mattered most when the callout
87 was marked defer_ok. Fix to keep the two timeout-detection methods
88 separate.
89
90 JH/15 Relax results from ACL control request to enable cutthrough, in
91 unsupported situations, from error to silently (except under debug)
92 ignoring. This covers use with PRDR, frozen messages, queue-only and
93 fake-reject.
94
95 HS/01 Fix Buffer overflow in base64d() (CVE-2018-6789)
96
97 JH/16 Fix bug in DKIM verify: a buffer overflow could corrupt the malloc
98 metadata, resulting in a crash in free().
99
100 PP/01 Fix broken Heimdal GSSAPI authenticator integration.
101 Broken in f2ed27cf5, missing an equals sign for specified-initialisers.
102 Broken also in d185889f4, with init system revamp.
103
104 JH/17 Bug 2113: Fix conversation closedown with the Avast malware scanner.
105 Previously we abruptly closed the connection after reading a malware-
106 found indication; now we go on to read the "scan ok" response line,
107 and send a quit.
108
109 JH/18 Bug 2239: Enforce non-usability of control=utf8_downconvert in the mail
110 ACL. Previously, a crash would result.
111
112 JH/19 Speed up macro lookups during configuration file read, by skipping non-
113 macro text after a replacement (previously it was only once per line) and
114 by skipping builtin macros when searching for an uppercase lead character.
115
116 JH/20 DANE support moved from Experimental to mainline. The Makefile control
117 for the build is renamed.
118
119 JH/21 Fix memory leak during multi-message connections using STARTTLS. A buffer
120 was allocated for every new TLS startup, meaning one per message. Fix
121 by only allocating once (OpenSSL) or freeing on TLS-close (GnuTLS).
122
123 JH/22 Bug 2236: When a DKIM verification result is overridden by ACL, DMARC
124 reported the original. Fix to report (as far as possible) the ACL
125 result replacing the original.
126
127 JH/23 Fix memory leak during multi-message connections using STARTTLS under
128 OpenSSL. Certificate information is loaded for every new TLS startup,
129 and the resources needed to be freed.
130
131 JH/24 Bug 2242: Fix exim_dbmbuild to permit directoryless filenames.
132
133 JH/25 Fix utf8_downconvert propagation through a redirect router. Previously it
134 was not propagated.
135
136 JH/26 Bug 2253: For logging delivery lines under PRDR, append the overall
137 DATA response info to the (existing) per-recipient response info for
138 the "C=" log element. It can have useful tracking info from the
139 destination system. Patch from Simon Arlott.
140
141 JH/27 Bug 2251: Fix ldap lookups that return a single attribute having zero-
142 length value. Previously this would segfault.
143
144 HS/02 Support Avast multiline protoocol, this allows passing flags to
145 newer versions of the scanner.
146
147 JH/28 Ensure that variables possibly set during message acceptance are marked
148 dead before release of memory in the daemon loop. This stops complaints
149 about them when the debug_store option is enabled. Discovered specifically
150 for sender_rate_period, but applies to a whole set of variables.
151 Do the same for the queue-runner and queue-list loops, for variables set
152 from spool message files. Do the same for the SMTP per-message loop, for
153 certain variables indirectly set in ACL operations.
154
155 JH/29 Bug 2250: Fix a longstanding bug in heavily-pipelined SMTP input (such
156 as a multi-recipient message from a mailinglist manager). The coding had
157 an arbitrary cutoff number of characters while checking for more input;
158 enforced by writing a NUL into the buffer. This corrupted long / fast
159 input. The problem was exposed more widely when more pipelineing of SMTP
160 responses was introduced, and one Exim system was feeding another.
161 The symptom is log complaints of SMTP syntax error (NUL chars) on the
162 receiving system, and refused recipients seen by the sending system
163 (propating to people being dropped from mailing lists).
164 Discovered and pinpointed by David Carter.
165
166 JH/30 The (EXPERIMENTAL_DMARC) variable $dmarc_ar_header is withdrawn, being
167 replaced by the ${authresults } expansion.
168
169 JH/31 Bug 2257: Fix pipe transport to not use a socket-only syscall.
170
171 HS/03 Set a handler for SIGTERM and call exit(3) if running as PID 1. This
172 allows proper process termination in container environments.
173
174 JH/32 Bug 2258: Fix spool_wireformat in combination with LMTP transport.
175 Previously the "final dot" had a newline after it; ensure it is CR,LF.
176
177 JH/33 SPF: remove support for the "spf" ACL condition outcome values "err_temp"
178 and "err_perm", deprecated since 4.83 when the RFC-defined words
179 "temperror" and "permerror" were introduced.
180
181 JH/34 Re-introduce enforcement of no cutthrough delivery on transports having
182 transport-filters or DKIM-signing. The restriction was lost in the
183 consolidation of verify-callout and delivery SMTP handling.
184 Extend the restriction to also cover ARC-signing.
185
186 JH/35 Cutthrough: for a final-dot response timeout (and nonunderstood responses)
187 in defer=pass mode supply a 450 to the initiator. Previously the message
188 would be spooled.
189
190 PP/02 DANE: add dane_require_tls_ciphers SMTP Transport option; if unset,
191 tls_require_ciphers is used as before.
192
193
194 Exim version 4.90
195 -----------------
196
197 JH/01 Rework error string handling in TLS interface so that the caller in
198 more cases is responsible for logging. This permits library-sourced
199 string to be attached to addresses during delivery, and collapses
200 pairs of long lines into single ones.
201
202 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
203 during configuration. Wildcards are allowed and expanded.
204
205 JH/02 Rework error string handling in DKIM to pass more info back to callers.
206 This permits better logging.
207
208 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
209 do not close it down and have the child transport start it up again on
210 the passed-on TCP connection. Instead, proxy the child (and any
211 subsequent ones) for TLS via a unix-domain socket channel. Logging is
212 affected: the continued delivery log lines do not have any DNSSEC, TLS
213 Certificate or OCSP information. TLS cipher information is still logged.
214
215 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
216 identical IP addresses on different listening ports. Will also affect
217 "exiwhat" output.
218
219 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
220 add noisy ifdef guards to special-case this sillyness.
221 Patch from Bernd Kuhls.
222
223 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
224 than 255 are no longer allowed.
225
226 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
227 Disable the session-cache too, which might reduce our load. Since we
228 currrectly use a new context for every connection, both as server and
229 client, there is no benefit for these.
230 GnuTLS appears to not support tickets server-side by default (we don't
231 call gnutls_session_ticket_enable_server()) but client side is enabled
232 by default on recent versions (3.1.3 +) unless the PFS priority string
233 is used (3.2.4 +).
234
235 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
236 <https://reproducible-builds.org/specs/source-date-epoch/>.
237
238 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
239 the check for any unsuccessful recipients did not notice the limit, and
240 erroneously found still-pending ones.
241
242 JH/08 Pipeline CHUNKING command and data together, on kernels that support
243 MSG_MORE. Only in-clear (not on TLS connections).
244
245 JH/09 Avoid using a temporary file during transport using dkim. Unless a
246 transport-filter is involved we can buffer the headers in memory for
247 creating the signature, and read the spool data file once for the
248 signature and again for transmission.
249
250 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
251 4.77 as the kernel support then wasn't solid, having issues in 64bit
252 mode. Now, it's been long enough. Add support for FreeBSD also.
253
254 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
255 case where the routing stage had gathered several addresses to send to
256 a host before calling the transport for the first, we previously failed
257 to close down TLS in the old transport process before passing the TCP
258 connection to the new process. The new one sent a STARTTLS command
259 which naturally failed, giving a failed delivery and bloating the retry
260 database. Investigation and fix prototype from Wolfgang Breyha.
261
262 JH/12 Fix check on SMTP command input synchronisation. Previously there were
263 false-negatives in the check that the sender had not preempted a response
264 or prompt from Exim (running as a server), due to that code's lack of
265 awareness of the SMTP input buffering.
266
267 PP/04 Add commandline_checks_require_admin option.
268 Exim drops privileges sanely, various checks such as -be aren't a
269 security problem, as long as you trust local users with access to their
270 own account. When invoked by services which pass untrusted data to
271 Exim, this might be an issue. Set this option in main configuration
272 AND make fixes to the calling application, such as using `--` to stop
273 processing options.
274
275 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
276 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
277 responses to those, into a single TLS record each way (this usually means
278 a single packet). As a side issue, smtp_enforce_sync now works on TLS
279 connections.
280
281 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
282 affects you only if you're dancing at the edge of the param size limits.
283 If you are, and this message makes sense to you, then: raise the
284 configured limit or use OpenSSL 1.1. Nothing we can do for older
285 versions.
286
287 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
288 cmdline element to get the documented default one. Previously it was
289 inaccessible.
290
291 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
292 are unsuable for non-message-specific reasons - eg. connection timeout,
293 banner-time rejection.
294
295 JH/16 Fix logging of delivery remote port, when specified by router, under
296 callout/hold.
297
298 PP/06 Repair manualroute's ability to take options in any order, even if one
299 is the name of a transport.
300 Fixes bug 2140.
301
302 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
303
304 JH/17 Change the list-building routines interface to use the expanding-string
305 triplet model, for better allocation and copying behaviour.
306
307 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
308 Previously it was constructed the first time a possibly-matching string
309 was met in the configuration file input during startup; now it is done
310 during compilation.
311
312 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
313 compatible one, to avoid the (poorly documented) possibility of a config
314 file in the working directory redirecting the DB files, possibly correpting
315 some existing file. CVE-2017-10140 assigned for BDB.
316
317 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
318 cache-hot. Previously, although the result was properly cached, the
319 initial verify call returned a defer.
320
321 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
322 the main verify for receipient in uncached-mode.
323
324 JH/22 Retire historical build files to an "unsupported" subdir. These are
325 defined as "ones for which we have no current evidence of testing".
326
327 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
328 if present. Previously it was ignored.
329
330 JH/24 Start using specified-initialisers in C structure init coding. This is
331 a C99 feature (it's 2017, so now considered safe).
332
333 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
334 if was a fixed-sized field and bitmask ops via macros; it is now more
335 extensible.
336
337 PP/07 GitHub PR 56: Apply MariaDB build fix.
338 Patch provided by Jaroslav Škarvada.
339
340 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
341 during Coverity cleanups [4.87 JH/47]
342 Diagnosis and fix provided by Michael Fischer v. Mollard.
343
344 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
345 the right size to place the terminating semicolon on its own folded
346 line, the header hash was calculated to an incorrect value thanks to
347 the (relaxed) space the fold became.
348
349 HS/02 Fix Bug 2130: large writes from the transport subprocess where chunked
350 and confused the parent.
351
352 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
353 which could crash as a result. This could lead to undeliverable messages.
354
355 JH/28 Logging: "next input sent too soon" now shows where input was truncated
356 for log purposes.
357
358 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
359 matters on fast-turnover and PID-randomising systems, which were getting
360 out-of-order delivery.
361
362 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
363 a possibly-overlapping copy. The symptom was that "Remote host closed
364 connection in response to HELO" was logged instead of the actual 4xx
365 error for the HELO.
366
367 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
368 Previously only that bufferd was discarded, resulting in SYMTP command
369 desynchronisation.
370
371 JH/32 DKIM: when a message has multiple signatures matching an identity given
372 in dkim_verify_signers, run the dkim acl once for each. Previously only
373 one run was done. Bug 2189.
374
375 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
376 "panic the current process" to "deliberately defer". The panic log is
377 still written with the problem list name; the mail and reject logs now
378 get a temp-reject line for the message that was being handled, saying
379 something like "domains check lookup or other defer". The SMTP 451
380 message is still "Temporary local problem".
381
382 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
383 A crafted sequence of BDAT commands could result in in-use memory beeing
384 freed. CVE-2017-16943.
385
386 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
387 from SMTP input. Previously it was always done; now only done for DATA
388 and not BDAT commands. CVE-2017-16944.
389
390 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
391 to the message (such as an overlong header line). Previously this was
392 not done and we did not exit BDAT mode. Followon from the previous item
393 though a different problem.
394
395
396 Exim version 4.89
397 -----------------
398
399 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
400 than -2003 did; needs libidn2 in addition to libidn.
401
402 JH/02 The path option on a pipe transport is now expanded before use.
403
404 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
405 Patch provided by "Björn", documentation fix added too.
406
407 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
408 missing a wire-to-host endian conversion.
409
410 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
411 close after a BDAT command line could be taken as a following command,
412 giving a synch failure. Fix by only checking for synch immediately
413 before acknowledging the chunk.
414
415 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
416 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
417 macro. Patches provided by Josh Soref.
418
419 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
420 Previously we did not; the RFC seems ambiguous and VRFY is not listed
421 by IANA as a service extension. However, John Klensin suggests that we
422 should.
423
424 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
425 the dkim code may be unix-mode line endings rather than smtp wire-format
426 CRLF, so prepend a CR to any bare LF.
427
428 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
429 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
430
431 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
432 the first were themselves being wrongly included in the feed into dkim
433 processing; with most chunk sizes in use this resulted in an incorrect
434 body hash calculated value.
435
436 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
437 DKIM signature block, for verification. Although advised against by
438 standards it is specifically not ruled illegal.
439
440 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
441
442 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
443 missing a body hash (the bh= tag).
444
445 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
446 It seems that HAProxy sends the Proxy Protocol information in clear and
447 only then does a TLS startup, so do the same.
448
449 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
450 TCP connections (such as for Spamd) unless the daemon successfully set
451 Fast Open mode on its listening sockets. This fixes breakage seen on
452 too-old kernels or those not configured for Fast Open, at the cost of
453 requiring both directions being enabled for TFO, and TFO never being used
454 by non-daemon-related Exim processes.
455
456 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
457 endings, at least on the first header line. Try to canonify any that get
458 past that check, despite the cost.
459
460 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
461 now limited to an arbitrary five deep, while parsing addresses with the
462 strip_excess_angle_brackets option enabled.
463
464 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
465 instead leave the unprompted TLS handshake in socket buffer for the
466 TLS library to consume.
467
468 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
469
470 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
471
472 JH/16 Drop variables when they go out of scope. Memory management drops a whole
473 region in one operation, for speed, and this leaves assigned pointers
474 dangling. Add checks run only under the testsuite which checks all
475 variables at a store-reset and panics on a dangling pointer; add code
476 explicitly nulling out all the variables discovered. Fixes one known
477 bug: a transport crash, where a dangling pointer for $sending_ip_address
478 originally assigned in a verify callout, is re-used.
479
480 PP/06 Drop '.' from @INC in various Perl scripts.
481
482 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
483
484 PP/08 Reduce a number of compilation warnings under clang; building with
485 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
486 should be warning-free.
487
488 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
489
490 HS/01 Fix portability problems introduced by PP/08 for platforms where
491 realloc(NULL) is not equivalent to malloc() [SunOS et al].
492
493 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
494 chunk. This allows us to accept broken chunked messages. We need a more
495 general solution here.
496
497 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
498 already-broken messages in the queue.
499
500 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
501
502 JH/19 Fix reference counting bug in routing-generated-address tracking.
503
504
505 Exim version 4.88
506 -----------------
507
508 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
509 supports it and a size is available (ie. the sending peer gave us one).
510
511 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
512 years of being deprecated). The replacements are the ACLs
513 acl_smtp_mime and acl_not_smtp_mime.
514
515 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
516 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
517 or even an in-clear connection were permitted. Now, if the host lookup
518 was dnssec and dane was requested then the host is only used if the
519 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
520 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
521 if one fails this test.
522 This means that a poorly-configured remote DNS will make it incommunicado;
523 but it protects against a DNS-interception attack on it.
524
525 JH/04 Bug 1810: make continued-use of an open smtp transport connection
526 non-noisy when a race steals the message being considered.
527
528 JH/05 If main configuration option tls_certificate is unset, generate a
529 self-signed certificate for inbound TLS connections.
530
531 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
532 in rewrites and routers.
533
534 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
535 and logged a warning sing 4.83; now they are a configuration file error.
536
537 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
538 (lacking @domain). Apply the same qualification processing as RCPT.
539
540 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
541
542 JH/10 Support ${sha256:} applied to a string (as well as the previous
543 certificate).
544
545 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
546 a cutthrough deliver is pending, as we always want to make a connection.
547 This also avoids re-routing the message when later placing the cutthrough
548 connection after a verify cache hit.
549 Do not update it with the verify result either.
550
551 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
552 when routing results in more than one destination address.
553
554 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
555 signing (which inhibits the cutthrough capability). Previously only
556 the presence of an option was tested; now an expansion evaluating as
557 empty is permissible (obviously it should depend only on data available
558 when the cutthrough connection is made).
559
560 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
561 the relevant preceding SMTP command did not note the pipelining mode.
562
563 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
564 Previously they were not counted.
565
566 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
567 as one having no matching records. Previously we deferred the message
568 that needed the lookup.
569
570 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
571 distinguished as "(=".
572
573 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
574 for missing MX records. Previously it only worked for missing A records.
575
576 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
577
578 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
579 after the data-go-ahead and data-ack. Patch from Jason Betts.
580
581 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
582 even for a "none" policy. Patch from Tony Meyer.
583
584 JH/22 Fix continued use of a connection for further deliveries. If a port was
585 specified by a router, it must also match for the delivery to be
586 compatible.
587
588 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
589 When one of the recipients of a message was unsuitable for the connection
590 (has no matching addresses), we lost track of needing to mark it
591 deferred. As a result mail would be lost.
592
593 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
594
595 JH/25 Decoding ACL controls is now done using a binary search; the source code
596 takes up less space and should be simpler to maintain. Merge the ACL
597 condition decode tables also, with similar effect.
598
599 JH/26 Fix problem with one_time used on a redirect router which returned the
600 parent address unchanged. A retry would see the parent address marked as
601 delivered, so not attempt the (identical) child. As a result mail would
602 be lost.
603
604 JH/27 Fix a possible security hole, wherein a process operating with the Exim
605 UID can gain a root shell. Credit to http://www.halfdog.net/ for
606 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
607 itself :(
608
609 JH/28 Enable {spool,log} filesystem space and inode checks as default.
610 Main config options check_{log,spool}_{inodes,space} are now
611 100 inodes, 10MB unless set otherwise in the configuration.
612
613 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
614 Previously it only applied to the main-section connection policy
615 options.
616
617 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
618
619 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
620 by me. Added RFC7919 DH primes as an alternative.
621
622 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
623 are not in the system include path.
624
625 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
626 GnuTLS, when a session startup failed (eg because the client disconnected)
627 Exim did stdio operations after fclose. This was exposed by a recent
628 change which nulled out the file handle after the fclose.
629
630 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
631 signed directly by the cert-signing cert, rather than an intermediate
632 OCSP-signing cert. This is the model used by LetsEncrypt.
633
634 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
635
636 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
637 an incoming connection.
638
639 HS/02 Bug 1802: Do not half-close the connection after sending a request
640 to rspamd.
641
642 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
643 fallback to "prime256v1".
644
645 JH/34 SECURITY: Use proper copy of DATA command in error message.
646 Could leak key material. Remotely exploitable. CVE-2016-9963.
647
648
649 Exim version 4.87
650 -----------------
651
652 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
653 and 3.4.4 - once the server is enabled to respond to an OCSP request
654 it does even when not requested, resulting in a stapling non-aware
655 client dropping the TLS connection.
656
657 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
658 support variable-length bit vectors. No functional change.
659
660 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
661 The I= interface field on outgoing lines is now after the H= remote
662 host field, same as incoming lines. There is a separate
663 outgoing_interface log selector which allows you to disable the
664 outgoing I= field.
665
666 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
667 If not running log_selector +smtp_connection the mainlog would be held
668 open indefinitely after a "too many connections" event, including to a
669 deleted file after a log rotate. Leave the per net connection logging
670 leaving it open for efficiency as that will be quickly detected by the
671 check on the next write.
672
673 HS/01 Bug 1671: Fix post transport crash.
674 Processing the wait-<transport> messages could crash the delivery
675 process if the message IDs didn't exist for some reason. When
676 using 'split_spool_directory=yes' the construction of the spool
677 file name failed already, exposing the same netto behaviour.
678
679 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
680 mime_regex ACL conditions.
681
682 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
683 to DSN fail messages (bounces): remote IP, remote greeting, remote response
684 to HELO, local diagnostic string.
685
686 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
687 log line to debug. Even when configured with a tls authenticator many
688 client connections are expected to not authenticate in this way, so
689 an authenticate fail is not an error.
690
691 HS/02 Add the Exim version string to the process info. This way exiwhat
692 gives some more detail about the running daemon.
693
694 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
695 matter for fast-change records such as DNSBLs.
696
697 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
698 retry record, even if constant. There may be multiple transports with
699 different interface settings and the retry behaviour needs to be kept
700 distinct.
701
702 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
703
704 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
705
706 JH/10 Bug 840: fix log_defer_output option of pipe transport
707
708 JH/11 Bug 830: use same host for all RCPTS of a message, even under
709 hosts_randomize. This matters a lot when combined with mua_wrapper.
710
711 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
712 ${quote_pgsql:<string>} operator.
713
714 JH/13 Bug 1708: avoid misaligned access in cached lookup.
715
716 JH/14 Change header file name for freeradius-client. Relevant if compiling
717 with Radius support; from the Gentoo tree and checked under Fedora.
718
719 JH/15 Bug 1712: Introduce $prdr_requested flag variable
720
721 JH/16 Bug 1714: Permit an empty string as expansion result for transport
722 option transport_filter, meaning no filtering.
723
724 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
725
726 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
727 defaults to "*" (all hosts). The variable is now available when not built
728 with TLS, default unset, mainly to enable keeping the testsuite sane.
729 If a server certificate is not supplied (via tls_certificate) an error is
730 logged, and clients will find TLS connections fail on startup. Presumably
731 they will retry in-clear.
732 Packagers of Exim are strongly encouraged to create a server certificate
733 at installation time.
734
735 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
736 with the $config_file variable.
737
738 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
739 in transport context, after the attempt, and per-recipient. The latter type
740 is per host attempted. The event data is the error message, and the errno
741 information encodes the lookup type (A vs. MX) used for the (first) host,
742 and the trailing two digits of the smtp 4xx response.
743
744 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
745 to write to mainlog (or rejectlog, paniclog) in the window between file
746 creation and permissions/ownership being changed. Particularly affects
747 installations where exicyclog is run as root, rather than exim user;
748 result is that the running daemon panics and dies.
749
750 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
751
752 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
753 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
754 "pri" and "weight". Note that the previous implicit priority given by the
755 list order is no longer honoured.
756
757 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
758 for DKIM processing.
759
760 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
761 by defining SUPPORT_SOCKS.
762
763 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
764 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
765 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
766 variables are renamed to proxy_{local,external}_{address,port}.
767
768 JH/27 Move Internationalisation support from Experimental to mainline, enabled
769 for a build by defining SUPPORT_I18N
770
771 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
772 of the query string, and make ${quote_redis:} do that quoting.
773
774 JH/29 Move Events support from Experimental to mainline, enabled by default
775 and removable for a build by defining DISABLE_EVENT.
776
777 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
778
779 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
780 cached by the daemon.
781
782 JH/32 Move Redis support from Experimental to mainline, enabled for a build
783 by defining LOOKUP_REDIS. The libhiredis library is required.
784
785 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
786 keys are given for lookup.
787
788 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
789 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
790 only supported when built with TLS support. The PolarSSL SHA routines
791 are still used when the TLS library is too old for convenient support.
792
793 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
794 openssl_options), for security. OpenSSL forces this from version 1.1.0
795 server-side so match that on older versions.
796
797 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
798 allocation for $value could be released as the expansion processing
799 concluded, but leaving the global pointer active for it.
800
801 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
802 and to use the domains and local_parts ACL conditions.
803
804 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
805 incorrectly not doubled on cutthrough transmission, hence seen as a
806 body-termination at the receiving system - resulting in truncated mails.
807 Commonly the sender saw a TCP-level error, and retransmitted the message
808 via the normal store-and-forward channel. This could result in duplicates
809 received - but deduplicating mailstores were liable to retain only the
810 initial truncated version.
811
812 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
813
814 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
815
816 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
817 we're in there, support oversigning also; bug 1309.
818
819 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
820
821 HS/04 Add support for keep_environment and add_environment options.
822
823 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
824 either intentional arithmetic overflow during PRNG, or testing config-
825 induced overflows.
826
827 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
828 delivery resulted in actual delivery. Cancel cutthrough before DATA
829 stage.
830
831 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
832 rejects a recipient: pass the reject to the originator.
833
834 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
835 Many were false-positives and ignorable, but it's worth fixing the
836 former class.
837
838 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
839 for the new environment-manipulation done at startup. Move the routines
840 from being local to tls.c to being global via the os.c file.
841
842 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
843 an extract embedded as result-arg for a map, the first arg for extract
844 is unavailable so we cannot tell if this is a numbered or keyed
845 extraction. Accept either.
846
847
848 Exim version 4.86
849 -----------------
850
851 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
852 expanded.
853
854 JH/02 The smtp transport option "multi_domain" is now expanded.
855
856 JH/03 The smtp transport now requests PRDR by default, if the server offers
857 it.
858
859 JH/04 Certificate name checking on server certificates, when exim is a client,
860 is now done by default. The transport option tls_verify_cert_hostnames
861 can be used to disable this per-host. The build option
862 EXPERIMENTAL_CERTNAMES is withdrawn.
863
864 JH/05 The value of the tls_verify_certificates smtp transport and main options
865 default to the word "system" to access the system default CA bundle.
866 For GnuTLS, only version 3.0.20 or later.
867
868 JH/06 Verification of the server certificate for a TLS connection is now tried
869 (but not required) by default. The verification status is now logged by
870 default, for both outbound TLS and client-certificate supplying inbound
871 TLS connections
872
873 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
874 sites use this now.
875
876 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
877 Status Notification (bounce) messages are now MIME format per RFC 3464.
878 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
879 under the control of the dsn_advertise_hosts option, and routers may
880 have a dsn_lasthop option.
881
882 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
883 default, modifiable by a malware= option. The list separator for
884 the options can now be changed in the usual way. Bug 68.
885
886 JH/10 The smtp_receive_timeout main option is now expanded before use.
887
888 JH/11 The incoming_interface log option now also enables logging of the
889 local interface on delivery outgoing connections.
890
891 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
892 if the interface and destination host and port all match.
893
894 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
895 /defer_ok option.
896
897 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
898 Patch from Andrew Lewis.
899
900 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
901 now supports optional time-restrictions, weighting, and priority
902 modifiers per server. Patch originally by <rommer@active.by>.
903
904 JH/16 The spamd_address main option now supports a mixed list of local
905 and remote servers. Remote servers can be IPv6 addresses, and
906 specify a port-range.
907
908 JH/17 Bug 68: The spamd_address main option now supports an optional
909 timeout value per server.
910
911 JH/18 Bug 1581: Router and transport options headers_add/remove can
912 now have the list separator specified.
913
914 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
915 option values.
916
917 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
918 under OpenSSL.
919
920 JH/21 Support for the A6 type of dns record is withdrawn.
921
922 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
923 rather than the verbs used.
924
925 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
926 from 255 to 1024 chars.
927
928 JH/24 Verification callouts now attempt to use TLS by default.
929
930 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
931 are generic router options now. The defaults didn't change.
932
933 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
934 Original patch from Alexander Shikoff, worked over by JH.
935
936 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
937 files if ZCAT_COMMAND is not executable.
938
939 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
940
941 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
942
943 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
944 Normally benign, it bites when the pair was led to by a CNAME;
945 modern usage is to not canonicalize the domain to a CNAME target
946 (and we were inconsistent anyway for A-only vs AAAA+A).
947
948 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
949
950 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
951 when evaluating $sender_host_dnssec.
952
953 JH/31 Check the HELO verification lookup for DNSSEC, adding new
954 $sender_helo_dnssec variable.
955
956 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
957
958 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
959
960 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
961
962 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
963 documented as working, but never had. Support all but $spam_report.
964
965 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
966 added for tls authenticator.
967
968 HS/03 Add perl_taintmode main config option
969
970
971 Exim version 4.85
972 -----------------
973
974 TL/01 When running the test suite, the README says that variables such as
975 no_msglog_check are global and can be placed anywhere in a specific
976 test's script, however it was observed that placement needed to be near
977 the beginning for it to behave that way. Changed the runtest perl
978 script to read through the entire script once to detect and set these
979 variables, reset to the beginning of the script, and then run through
980 the script parsing/test process like normal.
981
982 TL/02 The BSD's have an arc4random API. One of the functions to induce
983 adding randomness was arc4random_stir(), but it has been removed in
984 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
985 function when detected.
986
987 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
988 cause callback expansion.
989
990 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
991 syntax errors in an expansion can be treated as a string instead of
992 logging or causing an error, due to the internal use of bool_lax
993 instead of bool when processing it.
994
995 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
996 server certificates when making smtp deliveries.
997
998 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
999
1000 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
1001
1002 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
1003
1004 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
1005 Merged patch from Sebastian Wiedenroth.
1006
1007 JH/05 Fix results-pipe from transport process. Several recipients, combined
1008 with certificate use, exposed issues where response data items split
1009 over buffer boundaries were not parsed properly. This eventually
1010 resulted in duplicates being sent. This issue only became common enough
1011 to notice due to the introduction of connection certificate information,
1012 the item size being so much larger. Found and fixed by Wolfgang Breyha.
1013
1014 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
1015 size buffer was used, resulting in syntax errors when an expansion
1016 exceeded it.
1017
1018 JH/07 Add support for directories of certificates when compiled with a GnuTLS
1019 version 3.3.6 or later.
1020
1021 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
1022 is EXPERIMENTAL_EVENT, the main-configuration and transport options
1023 both become "event_action", the variables become $event_name, $event_data
1024 and $event_defer_errno. There is a new variable $verify_mode, usable in
1025 routers, transports and related events. The tls:cert event is now also
1026 raised for inbound connections, if the main configuration event_action
1027 option is defined.
1028
1029 TL/06 In test suite, disable OCSP for old versions of openssl which contained
1030 early OCSP support, but no stapling (appears to be less than 1.0.0).
1031
1032 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
1033 server certificate names available under the smtp transport option
1034 "tls_verify_cert_hostname" now do not permit multi-component wildcard
1035 matches.
1036
1037 JH/10 Time-related extraction expansions from certificates now use the main
1038 option "timezone" setting for output formatting, and are consistent
1039 between OpenSSL and GnuTLS compilations. Bug 1541.
1040
1041 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
1042 encoded parameter in the incoming message. Bug 1558.
1043
1044 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
1045 include certificate info, eximon was claiming there were spoolfile
1046 syntax errors.
1047
1048 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
1049
1050 JH/14 Log delivery-related information more consistently, using the sequence
1051 "H=<name> [<ip>]" wherever possible.
1052
1053 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
1054 are problematic for Debian distribution, omit them from the release
1055 tarball.
1056
1057 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
1058
1059 JH/16 Fix string representation of time values on 64bit time_t architectures.
1060 Bug 1561.
1061
1062 JH/17 Fix a null-indirection in certextract expansions when a nondefault
1063 output list separator was used.
1064
1065
1066 Exim version 4.84
1067 -----------------
1068 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
1069 checkers that were complaining about end of non-void function with no
1070 return.
1071
1072 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
1073 This was a regression introduced in 4.83 by another bugfix.
1074
1075 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
1076
1077 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
1078 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
1079
1080
1081 Exim version 4.83
1082 -----------------
1083
1084 TF/01 Correctly close the server side of TLS when forking for delivery.
1085
1086 When a message was received over SMTP with TLS, Exim failed to clear up
1087 the incoming connection properly after forking off the child process to
1088 deliver the message. In some situations the subsequent outgoing
1089 delivery connection happened to have the same fd number as the incoming
1090 connection previously had. Exim would try to use TLS and fail, logging
1091 a "Bad file descriptor" error.
1092
1093 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
1094 utilities have not been installed.
1095
1096 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
1097 temporary space as the ACL may create new global variables.
1098
1099 TL/01 LDAP support uses per connection or global context settings, depending
1100 upon the detected version of the libraries at build time.
1101
1102 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
1103 to extract and use the src ip:port in logging and expansions as if it
1104 were a direct connection from the outside internet. PPv2 support was
1105 updated based on HAProxy spec change in May 2014.
1106
1107 JH/02 Add ${listextract {number}{list}{success}{fail}}.
1108
1109 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
1110 Properly escape header and check for NULL return.
1111
1112 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
1113 not dns_use_dnssec.
1114
1115 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
1116
1117 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
1118 characters in header names, implemented as a verify condition.
1119 Contributed by Michael Fischer v. Mollard.
1120
1121 TL/05 Rename SPF condition results err_perm and err_temp to standardized
1122 results permerror and temperror. Previous values are deprecated but
1123 still accepted. In a future release, err_perm and err_temp will be
1124 completely removed, which will be a backward incompatibility if the
1125 ACL tests for either of these two old results. Patch contributed by
1126 user bes-internal on the mailing list.
1127
1128 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
1129
1130 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
1131 selectors, in both main and reject logs.
1132
1133 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
1134 failed delivery.
1135
1136 JH/07 Add malware type "sock" for talking to simple daemon.
1137
1138 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
1139
1140 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
1141 routers/transports under cutthrough routing.
1142
1143 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
1144 numbers. Touch up "bool" conditional to keep the same definition.
1145
1146 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
1147
1148 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
1149
1150 JH/12 Expand items in router/transport headers_add or headers_remove lists
1151 individually rather than the list as a whole. Bug 1452.
1152
1153 Required for reasonable handling of multiple headers_ options when
1154 they may be empty; requires that headers_remove items with embedded
1155 colons must have them doubled (or the list-separator changed).
1156
1157 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
1158 view the policy declared in the DMARC record. Currently, $dmarc_status
1159 is a combined value of both the record presence and the result of the
1160 analysis.
1161
1162 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
1163
1164 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
1165 dnslookup router and the smtp transport (applying to the forward
1166 lookup).
1167
1168 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
1169 of ldap servers used for a specific lookup. Patch provided by Heiko
1170 Schlichting.
1171
1172 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
1173 New variable $lookup_dnssec_authenticated for observability.
1174
1175 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
1176 Patch submitted by Lars Timman.
1177
1178 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
1179
1180 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
1181 Requires trusted mode and valid format message id, aborts otherwise.
1182 Patch contributed by Heiko Schlichting.
1183
1184 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
1185 certextract with support for various fields. Bug 1358.
1186
1187 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1188 is requested by default, modifiable by smtp transport option
1189 hosts_request_ocsp.
1190
1191 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1192 operate on certificate variables to give certificate fingerprints
1193 Also new ${sha256:cert_variable}.
1194
1195 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1196
1197 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1198 Christian Aistleitner.
1199
1200 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1201
1202 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1203 file. Patch from Wolfgang Breyha.
1204
1205 JH/25 Expand the coverage of the delivery $host and $host_address to
1206 client authenticators run in verify callout. Bug 1476.
1207
1208 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1209 align with daemon_smtp_ports. Bug 72.
1210
1211 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1212 support and error reporting did not work properly.
1213
1214 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1215 and is readable. Patch from Andrew Colin Kissa.
1216
1217 TL/14 Enhance documentation of ${run expansion and how it parses the
1218 commandline after expansion, particularly in the case when an
1219 unquoted variable expansion results in an empty value.
1220
1221 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1222
1223 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1224 by renaming away from it. Addresses GH issue 15, reported by
1225 Jasper Wallace.
1226
1227 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1228
1229 TL/15 SECURITY: prevent double expansion in math comparison functions
1230 (can expand unsanitized data). Not remotely exploitable.
1231 CVE-2014-2972
1232
1233
1234 Exim version 4.82
1235 -----------------
1236
1237 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1238
1239 PP/02 Make -n do something, by making it not do something.
1240 When combined with -bP, the name of an option is not output.
1241
1242 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1243 by GnuTLS.
1244
1245 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1246 $sender_host_name and config options to manage this, and basic check
1247 routines.
1248
1249 PP/05 DSCP support for outbound connections and control modifier for inbound.
1250
1251 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1252 (Only plugin which currently uses this is kerberos4, which nobody should
1253 be using, but we should make it available and other future plugins might
1254 conceivably use it, even though it would break NAT; stuff *should* be
1255 using channel bindings instead).
1256
1257 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1258 name; added for Sendmail compatibility; requires admin caller.
1259 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1260 just ignore it); requires trusted caller.
1261 Also parse but ignore: -Ac -Am -X<logfile>
1262 Bugzilla 1117.
1263
1264 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1265
1266 TL/02 Add +smtp_confirmation as a default logging option.
1267
1268 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1269 Patch by Magnus Holmgren from 2007-02-20.
1270
1271 TL/04 Bugzilla 1281 - Spec typo.
1272 Bugzilla 1283 - Spec typo.
1273 Bugzilla 1290 - Spec grammar fixes.
1274
1275 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1276
1277 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1278
1279 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1280 mailing list by by Dmitry Isaikin.
1281
1282 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1283
1284 JH/02 Support "G" suffix to numbers in ${if comparisons.
1285
1286 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1287
1288 NM/01 Bugzilla 1197 - Spec typo
1289 Bugzilla 1196 - Spec examples corrections
1290
1291 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1292
1293 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1294 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1295 function.
1296
1297 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1298 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1299
1300 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1301 "acl {{name}{arg}...}", and optional args on acl condition
1302 "acl = name arg..."
1303
1304 JH/05 Permit multiple router/transport headers_add/remove lines.
1305
1306 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1307
1308 JH/07 Avoid using a waiting database for a single-message-only transport.
1309 Performance patch from Paul Fisher. Bugzilla 1262.
1310
1311 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1312 Bugzilla 884.
1313
1314 JH/09 Add $headers_added variable, with content from use of ACL modifier
1315 add_header (but not yet added to the message). Bugzilla 199.
1316
1317 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1318 Pulled from Bugzilla 817 by Wolfgang Breyha.
1319
1320 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1321 CVE-2012-5671
1322 (nb: this is the same fix as in Exim 4.80.1)
1323
1324 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1325 authenticators.
1326
1327 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1328 for control.
1329
1330 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1331
1332 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1333 advertise SMTP AUTH mechanism to us, instead of a generic
1334 protocol violation error. Also, make Exim more robust to bad
1335 data from the Dovecot auth socket.
1336
1337 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1338
1339 When a queue runner is handling a message, Exim first routes the
1340 recipient addresses, during which it prunes them based on the retry
1341 hints database. After that it attempts to deliver the message to
1342 any remaining recipients. It then updates the hints database using
1343 the retry rules.
1344
1345 So if a recipient address works intermittently, it can get repeatedly
1346 deferred at routing time. The retry hints record remains fresh so the
1347 address never reaches the final cutoff time.
1348
1349 This is a fairly common occurrence when a user is bumping up against
1350 their storage quota. Exim had some logic in its local delivery code
1351 to deal with this. However it did not apply to per-recipient defers
1352 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1353
1354 This change adds a proper retry rule check during routing so that the
1355 final cutoff time is checked against the message's age. We only do
1356 this check if there is an address retry record and there is not a
1357 domain retry record; this implies that previous attempts to handle
1358 the address had the retry_use_local_parts option turned on. We use
1359 this as an approximation for the destination being like a local
1360 delivery, as in LMTP.
1361
1362 I suspect this new check makes the old local delivery cutoff check
1363 redundant, but I have not verified this so I left the code in place.
1364
1365 TF/02 Correct gecos expansion when From: is a prefix of the username.
1366
1367 Test 0254 submits a message to Exim with the header
1368
1369 Resent-From: f
1370
1371 When I ran the test suite under the user fanf2, Exim expanded
1372 the header to contain my full name, whereas it should have added
1373 a Resent-Sender: header. It erroneously treats any prefix of the
1374 username as equal to the username.
1375
1376 This change corrects that bug.
1377
1378 GF/01 DCC debug and logging tidyup
1379 Error conditions log to paniclog rather than rejectlog.
1380 Debug lines prefixed by "DCC: " to remove any ambiguity.
1381
1382 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1383
1384 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1385 Bug spotted by Jeremy Harris; was flawed since initial commit.
1386 Would have resulted in OCSP responses post-SNI triggering an Exim
1387 NULL dereference and crash.
1388
1389 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1390
1391 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1392 Bug detection, analysis and fix by Samuel Thibault.
1393 Bugzilla 1331, Debian bug #698092.
1394
1395 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1396
1397 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1398 Server implementation by Todd Lyons, client by JH.
1399 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1400 config variable "prdr_enable" controls whether the server
1401 advertises the facility. If the client requests PRDR a new
1402 acl_data_smtp_prdr ACL is called once for each recipient, after
1403 the body content is received and before the acl_smtp_data ACL.
1404 The client is controlled by both of: a hosts_try_prdr option
1405 on the smtp transport, and the server advertisement.
1406 Default client logging of deliveries and rejections involving
1407 PRDR are flagged with the string "PRDR".
1408
1409 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1410 fclose(). Diagnosis by Todd Lyons.
1411
1412 PP/17 Update configure.default to handle IPv6 localhost better.
1413 Patch by Alain Williams (plus minor tweaks).
1414 Bugzilla 880.
1415
1416 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1417 This is now consistent with GnuTLS, and is now documented: the
1418 previous undocumented portable approach to treating the option as
1419 unset was to force an expansion failure. That still works, and
1420 an empty string is now equivalent.
1421
1422 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1423 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1424 not performing validation itself.
1425
1426 PP/20 Added force_command boolean option to pipe transport.
1427 Patch from Nick Koston, of cPanel Inc.
1428
1429 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1430 Bugzilla 321, 823.
1431
1432 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1433
1434 PP/21 Fix eximon continuous updating with timestamped log-files.
1435 Broken in a format-string cleanup in 4.80, missed when I repaired the
1436 other false fix of the same issue.
1437 Report and fix from Heiko Schlichting.
1438 Bugzilla 1363.
1439
1440 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1441 Report from Prashanth Katuri.
1442
1443 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1444 It's SecureTransport, so affects any MacOS clients which use the
1445 system-integrated TLS libraries, including email clients.
1446
1447 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1448 using a MIME ACL for non-SMTP local injection.
1449 Report and assistance in diagnosis by Warren Baker.
1450
1451 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1452
1453 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1454
1455 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1456 last id that failed so it may be referenced in subsequent ACL's.
1457
1458 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1459 Alexander Miroch.
1460
1461 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1462 ldap library initialization, allowing self-signed CA's to be
1463 used. Also properly sets require_cert option later in code by
1464 using NULL (global ldap config) instead of ldap handle (per
1465 session). Bug diagnosis and testing by alxgomz.
1466
1467 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1468 the src/util/ subdirectory.
1469
1470 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1471 renamed to Transport Post Delivery Action by Jeremy Harris, as
1472 EXPERIMENTAL_TPDA.
1473
1474 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1475 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1476 redis_servers = needs to be configured which will be used by the redis
1477 lookup. Patch from Warren Baker, of The Packet Hub.
1478
1479 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1480
1481 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1482 hostname or reverse DNS when processing a host list. Used suggestions
1483 from multiple comments on this bug.
1484
1485 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1486
1487 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1488 Missed a few lines, added it to make the runtest require no keyboard
1489 interaction.
1490
1491 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1492 contains upper case chars. Make router use caseful_local_part.
1493
1494 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1495 support when GnuTLS has been built with p11-kit.
1496
1497
1498 Exim version 4.80.1
1499 -------------------
1500
1501 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1502 CVE-2012-5671
1503 This, or similar/improved, will also be change PP/11 of 4.82.
1504
1505
1506 Exim version 4.80
1507 -----------------
1508
1509 PP/01 Handle short writes when writing local log-files.
1510 In practice, only affects FreeBSD (8 onwards).
1511 Bugzilla 1053, with thanks to Dmitry Isaikin.
1512
1513 NM/01 Bugzilla 949 - Documentation tweak
1514
1515 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1516 improved.
1517
1518 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1519
1520 PP/02 Implemented gsasl authenticator.
1521
1522 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1523
1524 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1525 `pkg-config foo` for cflags/libs.
1526
1527 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1528 with rest of GSASL and with heimdal_gssapi.
1529
1530 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1531 `pkg-config foo` for cflags/libs for the TLS implementation.
1532
1533 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1534 properties get this fed in as external SSF. A number of robustness
1535 and debugging improvements to the cyrus_sasl authenticator.
1536
1537 PP/08 cyrus_sasl server now expands the server_realm option.
1538
1539 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1540 Patch by Jeremy Harris.
1541
1542 PP/10 Added dbmjz lookup type.
1543
1544 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1545
1546 PP/12 MAIL args handles TAB as well as SP, for better interop with
1547 non-compliant senders.
1548 Analysis and variant patch by Todd Lyons.
1549
1550 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1551 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1552 Patch from Dirk Mueller <dmueller@suse.com>
1553
1554 PP/13 tls_peerdn now print-escaped for spool files.
1555 Observed some $tls_peerdn in wild which contained \n, which resulted
1556 in spool file corruption.
1557
1558 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1559 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1560 or write after TLS renegotiation, which otherwise led to messages
1561 "Got SSL error 2".
1562
1563 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1564 as a tracking header (ie: a signed header comes before the signature).
1565 Patch from Wolfgang Breyha.
1566
1567 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1568 comma-sep list; embedded commas doubled.
1569
1570 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1571
1572 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1573 diagnostics.
1574 Report and patch from Dmitry Banschikov.
1575
1576 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1577 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1578 failures. We appear to now support TLS1.1+ with Exim.
1579
1580 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1581 lets Exim select keys and certificates based upon TLS SNI from client.
1582 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1583 before an outbound SMTP session. New log_selector, +tls_sni.
1584
1585 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1586 NULL dereference. Report and patch from Alun Jones.
1587
1588 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1589 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1590 Not seeing resolver debug output on NetBSD, but suspect this is a
1591 resolver implementation change.
1592
1593 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1594 Left warnings. Added "eximon gdb" invocation mode.
1595
1596 PP/21 Defaulting "accept_8bitmime" to true, not false.
1597
1598 PP/22 Added -bw for inetd wait mode support.
1599
1600 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1601 locate the relevant includes and libraries. Made this the default.
1602
1603 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1604 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1605
1606 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1607 This may cause build issues on older platforms.
1608
1609 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1610 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1611 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1612 Added SNI support via GnuTLS too.
1613 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1614
1615 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1616
1617 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1618 Applied second patch from Janne, implementing suggestion to default
1619 multiple-strings-in-record handling to match SPF spec.
1620
1621 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1622
1623 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1624 read-only, out of scope).
1625 Patch from Wolfgang Breyha, report from Stuart Northfield.
1626
1627 PP/29 Fix three issues highlighted by clang analyser static analysis.
1628 Only crash-plausible issue would require the Cambridge-specific
1629 iplookup router and a misconfiguration.
1630 Report from Marcin Mirosław.
1631
1632 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1633
1634 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1635 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1636 As part of this, removing so much warning spew let me fix some minor
1637 real issues in debug logging.
1638
1639 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1640 assignment on my part. Fixed.
1641
1642 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1643 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1644 Janne Snabb (who went above and beyond: thank you).
1645
1646 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1647 string otherwise requires a connection and a bunch more work and it's
1648 relatively easy to get wrong. Should also expose TLS library linkage
1649 problems.
1650
1651 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1652 64-bit ${eval} (JH/03).
1653
1654 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1655 GNU libc to support some of the 64-bit stuff, should not lead to
1656 conflicts. Defined before os.h is pulled in, so if a given platform
1657 needs to override this, it can.
1658
1659 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1660 protection layer was required, which is not implemented.
1661 Bugzilla 1254, patch from Wolfgang Breyha.
1662
1663 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1664 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1665 tls_dhparam take prime identifiers. Also unbreak combination of
1666 OpenSSL+DH_params+TLSSNI.
1667
1668 PP/39 Disable SSLv2 by default in OpenSSL support.
1669
1670
1671 Exim version 4.77
1672 -----------------
1673
1674 PP/01 Solaris build fix for Oracle's LDAP libraries.
1675 Bugzilla 1109, patch from Stephen Usher.
1676
1677 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1678
1679 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1680 whitespace trailer
1681
1682 TF/02 Fix a couple more cases where we did not log the error message
1683 when unlink() failed. See also change 4.74-TF/03.
1684
1685 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1686 lock up or crash if it happened to be inside a call to libc when it
1687 got a SIGUSR1 from exiwhat.
1688
1689 The SIGUSR1 handler appends the current process status to the process
1690 log which is later printed by exiwhat. It used to use the general
1691 purpose logging code to do this, but several functions it calls are
1692 not safe for signals.
1693
1694 The new output code in the SIGUSR1 handler is specific to the process
1695 log, and simple enough that it's easy to inspect for signal safety.
1696 Removing some special cases also simplifies the general logging code.
1697 Removing the spurious timestamps from the process log simplifies
1698 exiwhat.
1699
1700 TF/04 Improved ratelimit ACL condition.
1701
1702 The /noupdate option has been deprecated in favour of /readonly which
1703 has clearer semantics. The /leaky, /strict, and /readonly update modes
1704 are mutually exclusive. The update mode is no longer included in the
1705 database key; it just determines when the database is updated. (This
1706 means that when you upgrade Exim will forget old rate measurements.)
1707
1708 Exim now checks that the per_* options are used with an update mode that
1709 makes sense for the current ACL. For example, when Exim is processing a
1710 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1711 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1712 must specify per_mail/readonly. If you omit the update mode it defaults to
1713 /leaky where that makes sense (as before) or /readonly where required.
1714
1715 The /noupdate option is now undocumented but still supported for
1716 backwards compatibility. It is equivalent to /readonly except that in
1717 ACLs where /readonly is required you may specify /leaky/noupdate or
1718 /strict/noupdate which are treated the same as /readonly.
1719
1720 A useful new feature is the /count= option. This is a generalization
1721 of the per_byte option, so that you can measure the throughput of other
1722 aggregate values. For example, the per_byte option is now equivalent
1723 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1724
1725 The per_rcpt option has been generalized using the /count= mechanism
1726 (though it's more complicated than the per_byte equivalence). When it is
1727 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1728 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1729 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1730 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1731 Note that using per_rcpt with a non-readonly update mode in more than
1732 one ACL will cause the recipients to be double-counted. (The per_mail
1733 and per_byte options don't have this problem.)
1734
1735 The handling of very low rates has changed slightly. If the computed rate
1736 is less than the event's count (usually one) then this event is the first
1737 after a long gap. In this case the rate is set to the same as this event's
1738 count, so that the first message of a spam run is counted properly.
1739
1740 The major new feature is a mechanism for counting the rate of unique
1741 events. The new per_addr option counts the number of different
1742 recipients that someone has sent messages to in the last time period. It
1743 behaves like per_rcpt if all the recipient addresses are different, but
1744 duplicate recipient addresses do not increase the measured rate. Like
1745 the /count= option this is a general mechanism, so the per_addr option
1746 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1747 example, measure the rate that a client uses different sender addresses
1748 with the options per_mail/unique=$sender_address. There are further
1749 details in the main documentation.
1750
1751 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1752
1753 TF/06 Removed a few PCRE remnants.
1754
1755 TF/07 Automatically extract Exim's version number from tags in the git
1756 repository when doing development or release builds.
1757
1758 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1759 Bugzilla 879. Patch from Paul Fisher.
1760
1761 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1762 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1763 Bugzilla 97.
1764
1765 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1766
1767 PP/05 Variable $av_failed, true if the AV scanner deferred.
1768 Bugzilla 1078. Patch from John Horne.
1769
1770 PP/06 Stop make process more reliably on build failure.
1771 Bugzilla 1087. Patch from Heiko Schlittermann.
1772
1773 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1774 Bugzilla 1089. Patch from Heiko Schlittermann.
1775
1776 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1777 Bugzilla 1131. Patch from Holger Weiß.
1778
1779 PP/09 Handle IPv6 addresses with SPF.
1780 Bugzilla 860. Patch from Wolfgang Breyha.
1781
1782 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1783 Bugzilla 1156.
1784 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1785 Bugzilla 1095.
1786
1787 PP/11 match_* no longer expand right-hand-side by default.
1788 New compile-time build option, EXPAND_LISTMATCH_RHS.
1789 New expansion conditions, "inlist", "inlisti".
1790
1791 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1792
1793 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1794
1795 PP/14 fix log_write() format string regression from TF/03.
1796 Bugzilla 1152. Patch from Dmitry Isaikin.
1797
1798
1799 Exim version 4.76
1800 -----------------
1801
1802 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1803
1804 PP/02 Harmonised TLS library version reporting; only show if debugging.
1805 Layout now matches that introduced for other libraries in 4.74 PP/03.
1806
1807 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1808
1809 PP/04 New "dns_use_edns0" global option.
1810
1811 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1812 Bugzilla 1098.
1813
1814 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1815 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1816
1817 TK/01 Updated PolarSSL code to 0.14.2.
1818 Bugzilla 1097. Patch from Andreas Metzler.
1819
1820 PP/07 Catch divide-by-zero in ${eval:...}.
1821 Fixes bugzilla 1102.
1822
1823 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1824 Bugzilla 1104.
1825
1826 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1827 format-string attack -- SECURITY: remote arbitrary code execution.
1828
1829 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1830 time unintentionally subject to list matching rules, letting the header
1831 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1832 arbitrary string expansion). This allowed for information disclosure.
1833
1834 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
1835 INT_MIN/-1 -- value coerced to INT_MAX.
1836
1837
1838 Exim version 4.75
1839 -----------------
1840
1841 NM/01 Workaround for PCRE version dependency in version reporting
1842 Bugzilla 1073
1843
1844 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
1845 This fixes portability to compilers other than gcc, notably
1846 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
1847
1848 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
1849 makefiles for portability to HP-UX and POSIX correctness.
1850
1851 PP/01 Permit LOOKUP_foo enabling on the make command-line.
1852 Also via indented variable definition in the Makefile.
1853 (Debugging by Oliver Heesakkers).
1854
1855 PP/02 Restore caching of spamd results with expanded spamd_address.
1856 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1857
1858 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1859 Improves build reliability. Fix from: Frank Elsner
1860
1861 NM/02 Fix wide character breakage in the rfc2047 coding
1862 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1863
1864 NM/03 Allow underscore in dnslist lookups
1865 Fixes bug 1026. Patch from Graeme Fowler
1866
1867 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1868 Code patches from Adam Ciarcinski of NetBSD.
1869
1870 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1871 Fixes bug 943.
1872
1873 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1874 is logged, to avoid truncation. Patch from John Horne.
1875
1876 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1877 Patch from Jakob Hirsch.
1878
1879 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1880 SQL string expansion failure details.
1881 Patch from Andrey Oktyabrski.
1882
1883 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1884 Patch from Simon Arlott.
1885
1886 PP/09 New lookups functionality failed to compile on old gcc which rejects
1887 extern declarations in function scope.
1888 Patch from Oliver Fleischmann
1889
1890 PP/10 Use sig_atomic_t for flags set from signal handlers.
1891 Check getgroups() return and improve debugging.
1892 Fixed developed for diagnosis in bug 927 (which turned out to be
1893 a kernel bug).
1894
1895 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1896 Patch from Mark Zealey.
1897
1898 PP/12 Bugzilla 1056: Improved spamd server selection.
1899 Patch from Mark Zealey.
1900
1901 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1902 Based on patch from Heiko Schlittermann.
1903
1904 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1905 Patch from Uwe Doering, sign-off by Michael Haardt.
1906
1907 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1908 variable declaration deep within a block. Bug and patch from
1909 Dennis Davis.
1910
1911 PP/15 lookups-Makefile IRIX compatibility coercion.
1912
1913 PP/16 Make DISABLE_DKIM build knob functional.
1914
1915 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1916 Patch by Simon Arlott
1917
1918 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1919 variable argument macros. Our copy now differs from upstream.
1920
1921
1922 Exim version 4.74
1923 -----------------
1924
1925 TF/01 Failure to get a lock on a hints database can have serious
1926 consequences so log it to the panic log.
1927
1928 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1929 controlled using the smtp_confirmation log selector.
1930
1931 TF/03 Include the error message when we fail to unlink a spool file.
1932
1933 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1934 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1935 for maintaining out-of-tree patches for some time.
1936
1937 PP/01 Bugzilla 139: Documentation and portability issues.
1938 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1939 Handle per-OS dynamic-module compilation flags.
1940
1941 PP/02 Let /dev/null have normal permissions.
1942 The 4.73 fixes were a little too stringent and complained about the
1943 permissions on /dev/null. Exempt it from some checks.
1944 Reported by Andreas M. Kirchwitz.
1945
1946 PP/03 Report version information for many libraries, including
1947 Exim version information for dynamically loaded libraries. Created
1948 version.h, now support a version extension string for distributors
1949 who patch heavily. Dynamic module ABI change.
1950
1951 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1952 privilege escalation vulnerability whereby the Exim run-time user
1953 can cause root to append content of the attacker's choosing to
1954 arbitrary files.
1955
1956 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1957 (Wolfgang Breyha)
1958
1959 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1960 If dropping privileges for untrusted macros, we disabled normal logging
1961 on the basis that it would fail; for the Exim run-time user, this is not
1962 the case, and it resulted in successful deliveries going unlogged.
1963 Fixed. Reported by Andreas Metzler.
1964
1965
1966 Exim version 4.73
1967 -----------------
1968
1969 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1970 only prepend for the Resent-* case. Fixes regression introduced in
1971 Exim 4.70 by NM/22 for Bugzilla 607.
1972
1973 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1974 increasing numbers of administrators be bitten by this.
1975
1976 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1977
1978 PP/03 Bugzilla 994: added openssl_options main configuration option.
1979
1980 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1981
1982 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1983
1984 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1985
1986 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1987 without a peer certificate, leading to a segfault because of an
1988 assumption that peers always have certificates. Be a little more
1989 paranoid. Problem reported by Martin Tscholak.
1990
1991 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1992 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1993 NB: ClamAV planning to remove STREAM in "middle of 2010".
1994 CL also introduces -bmalware, various -d+acl logging additions and
1995 more caution in buffer sizes.
1996
1997 PP/09 Implemented reverse_ip expansion operator.
1998
1999 PP/10 Bugzilla 937: provide a "debug" ACL control.
2000
2001 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
2002
2003 PP/12 Bugzilla 973: Implement --version.
2004
2005 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
2006
2007 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
2008
2009 PP/15 Bugzilla 816: support multiple condition rules on Routers.
2010
2011 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
2012 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
2013 ignore trailing whitespace.
2014
2015 JJ/02 prevent non-panic DKIM error from being sent to paniclog
2016
2017 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
2018 "exim" to be used
2019
2020 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
2021 Notification from Dr Andrew Aitchison.
2022
2023 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
2024 ExtendedDetectionInfo response format.
2025 Notification from John Horne.
2026
2027 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
2028 compatible.
2029
2030 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
2031 XSL and documented dependency on system catalogs, with examples of how
2032 it normally works.
2033
2034 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
2035 access.
2036
2037 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
2038 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
2039 configuration file which is writeable by the Exim user or group.
2040
2041 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
2042 of configuration files to cover files specified with the -C option if
2043 they are going to be used with root privileges, not just the default
2044 configuration file.
2045
2046 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
2047 option (effectively making it always true).
2048
2049 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
2050 files to be used while preserving root privileges.
2051
2052 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
2053 that rogue child processes cannot use them.
2054
2055 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
2056 run-time user, instead of root.
2057
2058 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
2059 Exim run-time user without dropping privileges.
2060
2061 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
2062 result string, instead of calling string_vformat() twice with the same
2063 arguments.
2064
2065 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
2066 for other users. Others should always drop root privileges if they use
2067 -C on the command line, even for a whitelisted configure file.
2068
2069 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
2070
2071 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
2072
2073
2074 Exim version 4.72
2075 -----------------
2076
2077 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
2078 $data_path, and $header_path variables; fixed documentation bugs and
2079 typos
2080
2081 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
2082 exipick to access non-standard spools, including the "frozen" queue
2083 (Finput)
2084
2085 NM/01 Bugzilla 965: Support mysql stored procedures.
2086 Patch from Alain Williams
2087
2088 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
2089
2090 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
2091 Patch from Andreas Metzler
2092
2093 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
2094 Patch from Kirill Miazine
2095
2096 NM/05 Bugzilla 671: Added umask to procmail example.
2097
2098 JJ/03 installed exipick 20100323.0, fixing doc bug
2099
2100 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
2101 directory. Notification and patch from Dan Rosenberg.
2102
2103 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
2104
2105 TK/02 Improve log output when DKIM signing operation fails.
2106
2107 MH/01 Treat the transport option dkim_domain as a colon separated
2108 list, not as a single string, and sign the message with each element,
2109 omitting multiple occurences of the same signer.
2110
2111 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
2112 Bugzilla 985, 986. Patch by Simon Arlott
2113
2114 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
2115 Patch by Simon Arlott
2116
2117 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
2118 MBX locking. Notification from Dan Rosenberg.
2119
2120
2121 Exim version 4.71
2122 -----------------
2123
2124 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
2125
2126 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
2127
2128 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
2129
2130 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
2131
2132 NM/04 Bugzilla 915: Flag broken perl installation during build.
2133
2134
2135 Exim version 4.70
2136 -----------------
2137
2138 TK/01 Added patch by Johannes Berg that expands the main option
2139 "spamd_address" if it starts with a dollar sign.
2140
2141 TK/02 Write list of recipients to X-Envelope-Sender header when building
2142 the mbox-format spool file for content scanning (suggested by Jakob
2143 Hirsch).
2144
2145 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
2146 (http://www.dcc-servers.net/) support via dccifd. Activated by
2147 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
2148
2149 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
2150 by Mark Daniel Reidel <mr@df.eu>.
2151
2152 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
2153 When building exim an external PCRE library is now needed -
2154 PCRE is a system library on the majority of modern systems.
2155 See entry on PCRE_LIBS in EDITME file.
2156
2157 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
2158 conversation. Added nologin parameter to request.
2159 Patch contributed by Kirill Miazine.
2160
2161 TF/01 Do not log submission mode rewrites if they do not change the address.
2162
2163 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
2164
2165 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
2166 log files in place. Contributed by Roberto Lima.
2167
2168 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
2169
2170 TF/03 Bugzilla 615: When checking the local_parts router precondition
2171 after a local_part_suffix or local_part_prefix option, Exim now
2172 does not use the address's named list lookup cache, since this
2173 contains cached lookups for the whole local part.
2174
2175 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
2176 Robert Millan. Documentation is in experimental-spec.txt.
2177
2178 TF/04 Bugzilla 668: Fix parallel build (make -j).
2179
2180 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
2181
2182 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
2183 Patch provided by Jan Srzednicki.
2184
2185 TF/05 Leading white space used to be stripped from $spam_report which
2186 wrecked the formatting. Now it is preserved.
2187
2188 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2189 that they are available at delivery time.
2190
2191 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2192
2193 TF/08 TLS error reporting now respects the incoming_interface and
2194 incoming_port log selectors.
2195
2196 TF/09 Produce a more useful error message if an SMTP transport's hosts
2197 setting expands to an empty string.
2198
2199 NM/06 Bugzilla 744: EXPN did not work under TLS.
2200 Patch provided by Phil Pennock.
2201
2202 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2203 Patch provided by Richard Godbee.
2204
2205 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2206 acl_smtp_notquit, added index entry.
2207
2208 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2209 Patch provided by Eugene Bujak.
2210
2211 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2212 accept(). Patch provided by Maxim Dounin.
2213
2214 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2215 Patch provided by Phil Pennock.
2216
2217 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2218
2219 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2220 Patch provided by Brad "anomie" Jorsch.
2221
2222 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2223 Patch provided by Dean Brooks.
2224
2225 TK/05 Add native DKIM support (does not depend on external libraries).
2226
2227 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2228 Patch provided by Graeme Fowler.
2229
2230 NM/16 Bugzilla 851: Documentation example syntax fix.
2231
2232 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2233
2234 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2235 lsearch.
2236
2237 NM/19 Bugzilla 745: TLS version reporting.
2238 Patch provided by Phil Pennock.
2239
2240 NM/20 Bugzilla 167: bool: condition support.
2241 Patch provided by Phil Pennock.
2242
2243 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2244 clients. Patch provided by Phil Pennock.
2245
2246 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2247 Patch provided by Brad "anomie" Jorsch.
2248
2249 NM/23 Bugzilla 687: Fix misparses in eximstats.
2250 Patch provided by Heiko Schlittermann.
2251
2252 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2253 Patch provided by Heiko Schlittermann.
2254
2255 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2256 plus update to original patch.
2257
2258 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2259
2260 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2261 Patch provided by David Brownlee.
2262
2263 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2264
2265 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2266
2267 NM/30 Bugzilla 888: TLS documentation bugfixes.
2268
2269 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2270
2271 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2272 Unlike the original bugzilla I have changed all shell scripts in src tree.
2273
2274 NM/33 Bugzilla 898: Transport filter timeout fix.
2275 Patch by Todd Rinaldo.
2276
2277 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2278 Patch by Serge Demonchaux.
2279
2280 NM/35 Bugzilla 39: Base64 decode bug fixes.
2281 Patch by Jakob Hirsch.
2282
2283 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2284
2285 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2286
2287 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2288
2289 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2290
2291
2292 Exim version 4.69
2293 -----------------
2294
2295 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2296 ALT-N's libdkim that I have put here:
2297 http://duncanthrax.net/exim-experimental/
2298
2299 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2300 were called 'true' and it seems that C99 defines that as a reserved
2301 keyword to be used with 'bool' variable types. That means you could
2302 not include C99-style headers which use bools without triggering
2303 build errors in sieve.c.
2304
2305 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2306 as mailq or other aliases. Changed the --help handling significantly
2307 to do whats expected. exim_usage() emits usage/help information.
2308
2309 SC/01 Added the -bylocaldomain option to eximstats.
2310
2311 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2312
2313 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2314
2315 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2316
2317
2318 Exim version 4.68
2319 -----------------
2320
2321 PH/01 Another patch from the Sieve maintainer.
2322
2323 PH/02 When an IPv6 address is converted to a string for single-key lookup
2324 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2325 dots are used instead of colons so that keys in lsearch files need not
2326 contain colons. This was done some time before quoting was made available
2327 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2328 (notated using the quote facility) so as to distinguish them from IPv4
2329 keys. This meant that lookups for IP addresses in host lists did not work
2330 for iplsearch lookups.
2331
2332 This has been fixed by arranging for IPv6 addresses to be expressed with
2333 colons if the lookup type is iplsearch. This is not incompatible, because
2334 previously such lookups could never work.
2335
2336 The situation is now rather anomalous, since one *can* have colons in
2337 ordinary lsearch keys. However, making the change in all cases is
2338 incompatible and would probably break a number of configurations.
2339
2340 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2341 version.
2342
2343 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2344 conversion specification without a maximum field width, thereby enabling
2345 a rogue spamd server to cause a buffer overflow. While nobody in their
2346 right mind would setup Exim to query an untrusted spamd server, an
2347 attacker that gains access to a server running spamd could potentially
2348 exploit this vulnerability to run arbitrary code as the Exim user.
2349
2350 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2351 $primary_hostname instead of what libspf2 thinks the hosts name is.
2352
2353 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2354 a directory entry by the name of the lookup key. Previously, if a
2355 symlink pointed to a non-existing file or a file in a directory that
2356 Exim lacked permissions to read, a lookup for a key matching that
2357 symlink would fail. Now it is enough that a matching directory entry
2358 exists, symlink or not. (Bugzilla 503.)
2359
2360 PH/03 The body_linecount and body_zerocount variables are now exported in the
2361 local_scan API.
2362
2363 PH/04 Added the $dnslist_matched variable.
2364
2365 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2366 This means they are set thereafter only if the connection becomes
2367 encrypted.
2368
2369 PH/06 Added the client_condition to authenticators so that some can be skipped
2370 by clients under certain conditions.
2371
2372 PH/07 The error message for a badly-placed control=no_multiline_responses left
2373 "_responses" off the end of the name.
2374
2375 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2376
2377 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2378 (without spaces) instead of just copying the configuration text.
2379
2380 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2381
2382 PH/11 Added $max_received_linelength.
2383
2384 PH/12 Added +ignore_defer and +include_defer to host lists.
2385
2386 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2387 way in which PCRE > 7.0 is built.
2388
2389 PH/14 Implemented queue_only_load_latch.
2390
2391 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2392 MAIL command. The effect was to mangle the value on 64-bit systems.
2393
2394 PH/16 Another patch from the Sieve maintainer.
2395
2396 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2397
2398 PH/18 If a system quota error occurred while trying to create the file for
2399 a maildir delivery, the message "Mailbox is full" was not appended to the
2400 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2401 only to a quota excession during the actual writing of the file.
2402
2403 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2404 characters?) which causes problems in log lines. The DN values are now
2405 passed through string_printing() before being added to log lines.
2406
2407 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2408 and InterBase are left for another time.)
2409
2410 PH/21 Added message_body_newlines option.
2411
2412 PH/22 Guard against possible overflow in moan_check_errorcopy().
2413
2414 PH/23 POSIX allows open() to be a macro; guard against that.
2415
2416 PH/24 If the recipient of an error message contained an @ in the local part
2417 (suitably quoted, of course), incorrect values were put in $domain and
2418 $local_part during the evaluation of errors_copy.
2419
2420
2421 Exim version 4.67
2422 -----------------
2423
2424 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2425 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2426 Jan Srzednicki.
2427
2428 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2429 issue a MAIL command.
2430
2431 PH/02 In an ACL statement such as
2432
2433 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2434
2435 if a client was not listed at all, or was listed with a value other than
2436 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2437 the condition was not true (as it should be), so access was not denied.
2438 The bug was that the ! inversion was incorrectly passed on to the second
2439 item. This has been fixed.
2440
2441 PH/03 Added additional dnslists conditions == and =& which are different from
2442 = and & when the dns lookup returns more than one IP address.
2443
2444 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2445 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2446
2447 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2448 FSYNC, which compiles an option called disable_fsync that allows for
2449 bypassing fsync(). The documentation is heavily laced with warnings.
2450
2451 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2452
2453 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2454 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2455 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2456 including adding "make clean"; (3) Added -fPIC when compiling the test
2457 dynamically loaded module, to get rid of a warning.
2458
2459 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2460 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2461 = 0s. The bug is otherwise harmless.
2462
2463 PH/07 There was a bug in the dovecot authenticator such that the value of
2464 $auth1 could be overwritten, and so not correctly preserved, after a
2465 successful authentication. This usually meant that the value preserved by
2466 the server_setid option was incorrect.
2467
2468 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2469
2470 PH/09 Installed PCRE release 7.0.
2471
2472 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2473 run for batched SMTP input. It is now run at the start of every message
2474 in the batch. While fixing this I discovered that the process information
2475 (output by running exiwhat) was not always getting set for -bs and -bS
2476 input. This is fixed, and it now also says "batched" for BSMTP.
2477
2478 PH/11 Added control=no_pipelining.
2479
2480 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2481 patch, slightly modified), and move the expansion of helo_data till after
2482 the connection is made in the smtp transport (so it can use these
2483 values).
2484
2485 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2486
2487 PH/14 Added log_selector = +pid.
2488
2489 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2490
2491 PH/16 Add ${if forany and ${if forall.
2492
2493 PH/17 Added dsn_from option to vary the From: line in DSNs.
2494
2495 PH/18 Flush SMTP output before performing a callout, unless control =
2496 no_callout_flush is set.
2497
2498 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2499 was true (the default) a successful delivery failed to delete the retry
2500 item, thus causing premature timeout of the address. The bug is now
2501 fixed.
2502
2503 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2504
2505 PH/21 Long custom messages for fakedefer and fakereject are now split up
2506 into multiline responses in the same way that messages for "deny" and
2507 other ACL rejections are.
2508
2509 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2510 with slight modification.
2511
2512 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2513 draft, changing the syntax and factoring some duplicate code".
2514
2515 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2516 for deliveries of the second and subsequent messages over the same SMTP
2517 connection.
2518
2519 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2520 ${reduce, with only minor "tidies".
2521
2522 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2523
2524 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2525 expansion side effects.
2526
2527 PH/27 When a message times out after an over-quota error from an Exim-imposed
2528 quota, the bounce message says "mailbox is full". This message was not
2529 being given when it was a system quota that was exceeded. It now should
2530 be the same.
2531
2532 MH/03 Made $recipients available in local_scan(). local_scan() already has
2533 better access to the recipient list through recipients_list[], but
2534 $recipients can be useful in postmaster-provided expansion strings.
2535
2536 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2537 in the case of a MAIL command with additional options following the
2538 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2539 were accidentally chopped off.
2540
2541 PH/29 SMTP synchronization checks are implemented when a command is read -
2542 there is a check that no more input is waiting when there shouldn't be
2543 any. However, for some commands, a delay in an ACL can mean that it is
2544 some time before the response is written. In this time, more input might
2545 arrive, invalidly. So now there are extra checks after an ACL has run for
2546 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2547 pipelining has not been advertised.
2548
2549 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2550
2551 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2552 returned in the SMTP response when smtp_return_error_details was false.
2553 This has been fixed.
2554
2555 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2556 instead of the C I/O that was originally supplied, because problems were
2557 reported on Solaris.
2558
2559 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2560 Exim which did not show up earlier: it was assuming that a call to
2561 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2562 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2563 was a macro that became an assignment, so it seemed to work. This has
2564 changed to a proper function call with a void return, hence the compile
2565 error. Exim's code has been fixed.
2566
2567 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2568 cpus.
2569
2570 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2571
2572 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2573
2574 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2575 because it turns out to be too big or there is a timeout) there is no
2576 "Completed" line in the log. When some messages of this type were
2577 selected by exigrep, they were listed as "not completed". Others were
2578 picked up by some special patterns. I have improved the selection
2579 criteria to be more general.
2580
2581 PH/38 The host_find_failed option in the manualroute router can now be set
2582 to "ignore", to completely ignore a host whose IP address cannot be
2583 found. If all hosts are ignored, the behaviour is controlled by the new
2584 host_all_ignored option.
2585
2586 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2587 homing or because of multiple MX records with /mx) generated more than
2588 one IP address, and the following item turned out to be the local host,
2589 all the secondary addresses of the first item were incorrectly removed
2590 from the list, along with the local host and any following hosts (which
2591 is what is supposed to happen).
2592
2593 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2594 whoever called Exim into the -H file. In the case of the daemon it was
2595 behaving confusingly. When first started, it used values for whoever
2596 started the daemon, but after a SIGHUP it used the Exim user (because it
2597 calls itself on a restart). I have changed the code so that it now always
2598 uses the Exim user.
2599
2600 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2601 message are rejected with the same error (e.g. no authentication or bad
2602 sender address), and a DATA command is nevertheless sent (as can happen
2603 with PIPELINING or a stupid MUA), the error message that was given to the
2604 RCPT commands is included in the rejection of the DATA command. This is
2605 intended to be helpful for MUAs that show only the final error to their
2606 users.
2607
2608 PH/42 Another patch from the Sieve maintainer.
2609
2610 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2611 Eximstats - Fixed some broken HTML links and added missing column headers
2612 (Jez Hancock).
2613 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2614 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2615
2616 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2617
2618 PH/43 Yet another patch from the Sieve maintainer.
2619
2620 PH/44 I found a way to check for a TCP/IP connection going away before sending
2621 the response to the final '.' that terminates a message, but only in the
2622 case where the client has not sent further data following the '.'
2623 (unfortunately, this is allowed). However, in many cases there won't be
2624 any further data because there won't be any more messages to send. A call
2625 to select() can be used: if it shows that the input is "ready", there is
2626 either input waiting, or the socket has been closed. An attempt to read
2627 the next input character can distinguish the two cases. Previously, Exim
2628 would have sent an OK response which the client would never have see.
2629 This could lead to message repetition. This fix should cure that, at
2630 least in a lot of common cases.
2631
2632 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2633 advertised in response to EHLO.
2634
2635
2636 Exim version 4.66
2637 -----------------
2638
2639 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2640 fixed by 4.65/MH/01 (is this a record?) are fixed:
2641
2642 (i) An empty string was always treated as zero by the numeric comparison
2643 operators. This behaviour has been restored.
2644
2645 (ii) It is documented that the numeric comparison operators always treat
2646 their arguments as decimal numbers. This was broken in that numbers
2647 starting with 0 were being interpreted as octal.
2648
2649 While fixing these problems I realized that there was another issue that
2650 hadn't been noticed. Values of message_size_limit (both the global option
2651 and the transport option) were treated as octal if they started with 0.
2652 The documentation was vague. These values are now always treated as
2653 decimal, and I will make that clear in the documentation.
2654
2655
2656 Exim version 4.65
2657 -----------------
2658
2659 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2660 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2661 versions. (#438)
2662
2663 MH/01 Don't check that the operands of numeric comparison operators are
2664 integers when their expansion is in "skipping" mode (fixes bug
2665 introduced by 4.64-PH/07).
2666
2667 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2668 child addresses, Exim now panics and dies. Previously, because the count
2669 is held in a short int, deliveries were likely to be lost. As such a
2670 large number of recipients for a single message is ridiculous
2671 (performance will be very, very poor), I have chosen to impose a limit
2672 rather than extend the field.
2673
2674
2675 Exim version 4.64
2676 -----------------
2677
2678 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2679 leftover -K file (the existence of which was triggered by #402).
2680 While we were at it, introduced process PID as part of the -K
2681 filename. This should rule out race conditions when creating
2682 these files.
2683
2684 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2685 processing considerably. Previous code took too long for large mails,
2686 triggering a timeout which in turn triggers #401.
2687
2688 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2689 in the DK code in transports.c. sendfile() is not really portable,
2690 hence the _LINUX specificness.
2691
2692 TF/01 In the add_headers option to the mail command in an Exim filter,
2693 there was a bug that Exim would claim a syntax error in any
2694 header after the first one which had an odd number of characters
2695 in the field name.
2696
2697 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2698 callout verification, Exim cached a "reject" for the entire domain. This
2699 is correct for most verifications, but it is not correct for a recipient
2700 verification with use_sender or use_postmaster set, because in that case
2701 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2702 case of MAIL FROM:<> rejection from other early rejections (e.g.
2703 rejection of HELO). When verifying a recipient using a non-null MAIL
2704 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2705 Whatever the result of the callout, the value of the domain cache is
2706 left unchanged (for any other kind of callout, getting as far as trying
2707 RCPT means that the domain itself is ok).
2708
2709 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2710 gcc 4.1.1 threw up.
2711
2712 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2713 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2714 session, the daemon ignores ECONNECT errors and logs others; it now
2715 ignores EPIPE as well.
2716
2717 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2718 (quoted-printable decoding).
2719
2720 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2721 later the small subsequent patch to fix an introduced bug.
2722
2723 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2724
2725 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2726
2727 PH/08 An error is now given if message_size_limit is specified negative.
2728
2729 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2730 to be given (somewhat) arbitrary names.
2731
2732 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2733 in 4.64-PH/09.
2734
2735 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2736 miscellaneous code fixes
2737
2738 PH/10 Added the log_reject_target ACL modifier to specify where to log
2739 rejections.
2740
2741 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2742 hostname. This is wrong, because it relates to the incoming message (and
2743 probably the interface on which it is arriving) and not to the outgoing
2744 callout (which could be using a different interface). This has been
2745 changed to use the value of the helo_data option from the smtp transport
2746 instead - this is what is used when a message is actually being sent. If
2747 there is no remote transport (possible with a router that sets up host
2748 addresses), $smtp_active_hostname is used.
2749
2750 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2751 tweaks were necessary in order to get it to work (see also 21 below):
2752 (a) The code assumed that strncpy() returns a negative number on buffer
2753 overflow, which isn't the case. Replaced with Exim's string_format()
2754 function.
2755 (b) There were several signed/unsigned issues. I just did the minimum
2756 hacking in of casts. There is scope for a larger refactoring.
2757 (c) The code used strcasecmp() which is not a standard C function.
2758 Replaced with Exim's strcmpic() function.
2759 (d) The code set only $1; it now sets $auth1 as well.
2760 (e) A simple test gave the error "authentication client didn't specify
2761 service in request". It would seem that Dovecot has changed its
2762 interface. Fortunately there's a specification; I followed it and
2763 changed what the client sends and it appears to be working now.
2764
2765 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2766 decoding.
2767
2768 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2769 address A is aliased to B and C, where B exists and C does not. Without
2770 -v the output is "A verified" because verification stops after a
2771 successful redirection if more than one address is generated. However,
2772 with -v the child addresses are also verified. Exim was outputting "A
2773 failed to verify" and then showing the successful verification for C,
2774 with its parentage. It now outputs "B failed to verify", showing B's
2775 parentage before showing the successful verification of C.
2776
2777 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2778 look up a TXT record in a specific list after matching in a combined
2779 list.
2780
2781 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2782 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2783 they consult the DNS. I had assumed they would set it the way they
2784 wanted; and indeed my experiments on Linux seem to show that in some
2785 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2786 To be on the safe side, however, I have now made the interface to
2787 host_find_byname() similar to host_find_bydns(), with an argument
2788 containing the DNS resolver options. The host_find_byname() function now
2789 sets these options at its start, just as host_find_bydns() does. The smtp
2790 transport options dns_qualify_single and dns_search_parents are passed to
2791 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2792 of host_find_byname() use the default settings of RES_DEFNAMES
2793 (qualify_single) but not RES_DNSRCH (search_parents).
2794
2795 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2796 spool_read_header() do less string testing, by means of a preliminary
2797 switch on the second character of optional "-foo" lines. (This is
2798 overdue, caused by the large number of possibilities that now exist.
2799 Originally there were few.) While I was there, I also converted the
2800 str(n)cmp tests so they don't re-test the leading "-" and the first
2801 character, in the hope this might squeeze out yet more improvement.
2802
2803 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2804 flag allowing group syntax was set by the header_syntax check but not
2805 turned off, possible causing trouble later; (2) The flag was not being
2806 set at all for the header_verify test, causing "group"-style headers to
2807 be rejected. I have now set it in this case, and also caused header_
2808 verify to ignore an empty address taken from a group. While doing this, I
2809 came across some other cases where the code for allowing group syntax
2810 while scanning a header line wasn't quite right (mostly, not resetting
2811 the flag correctly in the right place). These bugs could have caused
2812 trouble for malformed header lines. I hope it is now all correct.
2813
2814 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2815 with the "reply" argument non-NULL. The code, however (which originally
2816 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2817 but it didn't always do it. This confused somebody who was copying the
2818 code for some other use. I have removed all the tests.
2819
2820 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2821 feature that was used to support insecure browsers during the U.S. crypto
2822 embargo. It requires special client support, and Exim is probably the
2823 only MTA that supported it -- and would never use it because real RSA is
2824 always available. This code has been removed, because it had the bad
2825 effect of slowing Exim down by computing (never used) parameters for the
2826 RSA_EXPORT functionality.
2827
2828 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2829 authenticator to fail if there's a tab character in the incoming data
2830 (there should never be unless someone is messing about, as it's supposed
2831 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2832 if the connection is using TLS or if the remote IP is the same as the
2833 local IP, and the "valid-client-cert option" if a client certificate has
2834 been verified.
2835
2836 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
2837 authenticators. This can be used for authorization after authentication
2838 succeeds. (In the case of plaintext, it servers for both authentication
2839 and authorization.)
2840
2841 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
2842 if any retry times were supplied.
2843
2844 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
2845 connection, where there is no client IP address to check. In this
2846 situation, the verify now always succeeds.
2847
2848 PH/25 Applied John Jetmore's -Mset patch.
2849
2850 PH/26 Added -bem to be like -Mset, but loading a message from a file.
2851
2852 PH/27 In a string expansion for a processed (not raw) header when multiple
2853 headers of the same name were present, leading whitespace was being
2854 removed from all of them, but trailing whitespace was being removed only
2855 from the last one. Now trailing whitespace is removed from each header
2856 before concatenation. Completely empty headers in a concatenation (as
2857 before) are ignored.
2858
2859 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2860 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2861
2862 PH/29 [Removed. This was a change that I later backed out, and forgot to
2863 correct the ChangeLog entry (that I had efficiently created) before
2864 committing the later change.]
2865
2866 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2867 address errors (4xx response to RCPT) over the same connection as other
2868 messages routed to the same hosts. Such deliveries are always "forced",
2869 so retry times are not inspected. This resulted in far too many retries
2870 for the affected addresses. The effect occurred only when there were more
2871 hosts than the hosts_max_try setting in the smtp transport when it had
2872 the 4xx errors. Those hosts that it had tried were not added to the list
2873 of hosts for which the message was waiting, so if all were tried, there
2874 was no problem. Two fixes have been applied:
2875
2876 (i) If there are any address or message errors in an SMTP delivery, none
2877 of the hosts (tried or untried) are now added to the list of hosts
2878 for which the message is waiting, so the message should not be a
2879 candidate for sending over the same connection that was used for a
2880 successful delivery of some other message. This seems entirely
2881 reasonable: after all the message is NOT "waiting for some host".
2882 This is so "obvious" that I'm not sure why it wasn't done
2883 previously. Hope I haven't missed anything, but it can't do any
2884 harm, as the worst effect is to miss an optimization.
2885
2886 (ii) If, despite (i), such a delivery is accidentally attempted, the
2887 routing retry time is respected, so at least it doesn't keep
2888 hammering the server.
2889
2890 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2891 in ${readsocket because some servers need this prod.
2892
2893 PH/32 Added some extra debug output when updating a wait-xxx database.
2894
2895 PH/33 The hint "could be header name not terminated by colon", which has been
2896 given for certain expansion errors for a long time, was not being given
2897 for the ${if def:h_colon_omitted{... case.
2898
2899 PH/34 The spec says: "With one important exception, whenever a domain list is
2900 being scanned, $domain contains the subject domain." There was at least
2901 one case where this was not true.
2902
2903 PH/35 The error "getsockname() failed: connection reset by peer" was being
2904 written to the panic log as well as the main log, but it isn't really
2905 panic-worthy as it just means the connection died rather early on. I have
2906 removed the panic log writing for the ECONNRESET error when getsockname()
2907 fails.
2908
2909 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2910 runs only) independently of the message's sender address. This meant
2911 that, if the 4xx error was in fact related to the sender, a different
2912 message to the same recipient with a different sender could confuse
2913 things. In particular, this can happen when sending to a greylisting
2914 server, but other circumstances could also provoke similar problems.
2915 I have changed the default so that the retry time for these errors is now
2916 based a combination of the sender and recipient addresses. This change
2917 can be overridden by setting address_retry_include_sender=false in the
2918 smtp transport.
2919
2920 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2921 remote server are returned as part of bounce messages. This was not
2922 happening for LMTP over a pipe (the lmtp transport), but now it is the
2923 same for both kinds of LMTP.
2924
2925 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2926 in header lines that were in fact CNAMEs. This is no longer the case.
2927
2928 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2929 and queue runs started by the daemon processed all messages. This has
2930 been fixed so that -R and -S can now usefully be given with -q<time>.
2931
2932 PH/40 Import PCRE release 6.7 (fixes some bugs).
2933
2934 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2935
2936 PH/42 Give an error if -q is specified more than once.
2937
2938 PH/43 Renamed the variables $interface_address and $interface_port as
2939 $received_ip_address and $received_port, to make it clear that these
2940 values apply to message reception, and not to the outgoing interface when
2941 a message is delivered. (The old names remain recognized, of course.)
2942
2943 PH/44 There was no timeout on the connect() call when using a Unix domain
2944 socket in the ${readsocket expansion. There now is.
2945
2946 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2947 be meaningful with "accept".
2948
2949 SC/01 Eximstats V1.43
2950 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2951
2952 SC/02 Eximstats V1.44
2953 Use a glob alias rather than an array ref in the generated
2954 parser. This improves both readability and performance.
2955
2956 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2957 Collect SpamAssassin and rejection statistics.
2958 Don't display local sender or destination tables unless
2959 there is data to show.
2960 Added average volumes into the top table text output.
2961
2962 SC/04 Eximstats V1.46
2963 Collect data on the number of addresses (recipients)
2964 as well as the number of messages.
2965
2966 SC/05 Eximstats V1.47
2967 Added 'Message too big' to the list of mail rejection
2968 reasons (thanks to Marco Gaiarin).
2969
2970 SC/06 Eximstats V1.48
2971 Mainlog lines which have GMT offsets and are too short to
2972 have a flag are now skipped.
2973
2974 SC/07 Eximstats V1.49 (Alain Williams)
2975 Added the -emptyok flag.
2976
2977 SC/08 Eximstats V1.50
2978 Fixes for obtaining the IP address from reject messages.
2979
2980 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2981 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2982 whitespace changes from 4.64-PH/27
2983
2984 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2985 match 4.64-PH/13
2986
2987 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2988 are found, allow negative numbers in numeric criteria)
2989
2990 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2991
2992 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2993 to match changes made in 4.64-PH/43
2994
2995 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2996
2997 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2998 "domain" is actually an IP address, and force a failure. This locks out
2999 those revolvers/nameservers that support "A-for-A" lookups, in
3000 contravention of the specifications.
3001
3002 PH/48 When a host name was looked up from an IP address, and the subsequent
3003 forward lookup of the name timed out, the host name was left in
3004 $sender_host_name, contrary to the specification.
3005
3006 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
3007 restricted to single-key lookups, Exim was not diagnosing an error if
3008 * or *@ was used with a query-style lookup.
3009
3010 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
3011
3012 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
3013 long ago, but noone interested enough thought of it. Let's just say that
3014 the "1.1" means that there are some new functions that weren't there at
3015 some point in the past.
3016
3017 PH/51 Error processing for expansion failure of helo_data from an smtp
3018 transport during callout processing was broken.
3019
3020 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
3021 tested/used via the -bh/-bhc/-bs options.
3022
3023 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
3024 bug, fixed in subsequent PCRE releases).
3025
3026 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
3027 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
3028
3029 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
3030
3031
3032 Exim version 4.63
3033 -----------------
3034
3035 SC/01 Use a glob alias rather than an array ref in eximstats generated
3036 parser. This improves both readability and performance.
3037
3038 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
3039 Don't display local sender or destination tables in eximstats unless
3040 there is data to show.
3041 Added average volumes into the eximstats top table text output.
3042
3043 SC/03 Collect data on the number of addresses (recipients) as well
3044 as the number of messages in eximstats.
3045
3046 TF/01 Correct an error in the documentation for the redirect router. Exim
3047 does (usually) call initgroups() when daemonizing.
3048
3049 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
3050 with consistent privilege compared to when running as a daemon.
3051
3052 TF/03 Note in the spec that $authenticated_id is not set for local
3053 submissions from trusted users.
3054
3055 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
3056 Thanks to Dean Brooks <dean@iglou.com> for the patch.
3057
3058 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
3059 by adding some example configuration directives to the default
3060 configuration file. A little bit of work is required to uncomment the
3061 directives and define how usernames and passwords are checked, but
3062 there is now a framework to start from.
3063
3064 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
3065 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
3066 without this. I don't know how relevant this is to other LDAP libraries.
3067
3068 PH/02 Add the verb name to the "unknown ACL verb" error.
3069
3070 PH/03 Magnus Holmgren's patch for filter_prepend_home.
3071
3072 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
3073
3074 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
3075 directory not expanded when it should be if an expanded home directory
3076 was set for the address (which is overridden by the transport).
3077
3078 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
3079 libradius.
3080
3081 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
3082 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
3083 because it is too late at that time, and has no effect.
3084
3085 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
3086 security issue with \' (bugzilla #107). I could not use the
3087 PQescapeStringConn() function, because it needs a PGconn value as one of
3088 its arguments.
3089
3090 PH/08 When testing addresses using -bt, indicate those final addresses that
3091 are duplicates that would not cause an additional delivery. At least one
3092 person was confused, thinking that -bt output corresponded to deliveries.
3093 (Suppressing duplicates isn't a good idea as you lose the information
3094 about possibly different redirections that led to the duplicates.)
3095
3096 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
3097 systems where poll() doesn't work, in particular OS X.
3098
3099 PH/10 Added more information to debugging output for retry time not reached.
3100
3101 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
3102 operations in malware.c.
3103
3104 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
3105 signatures.
3106
3107 PH/13 If write_rejectlog was set false when logging was sent to syslog with
3108 syslog_duplication set false, log lines that would normally be written
3109 both the the main log and to the reject log were not written to syslog at
3110 all.
3111
3112 PH/14 In the default configuration, change the use of "message" in ACL warn
3113 statements to "add_header".
3114
3115 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
3116 not followed by a command (e.g. "seen endif").
3117
3118 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
3119 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
3120 latter.
3121
3122 PH/17 Added extra conditions to the default value of delay_warning_condition
3123 so that it is now:
3124
3125 ${if or { \
3126 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
3127 { match{$h_precedence:}{(?i)bulk|list|junk} } \
3128 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
3129 }{no}{yes}}
3130
3131 The Auto-Submitted: and various List- headers are standardised, whereas I
3132 don't think Precedence: ever was.
3133
3134 PH/18 Refactored debugging code in route_finduser() to show more information,
3135 in particular, the error code if getpwnam() issues one.
3136
3137 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
3138 This is apparently needed in addition to the PH/07 change above to avoid
3139 any possible encoding problems.
3140
3141 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
3142 but not after initializing Perl.
3143
3144 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
3145 output them only if debugging. By default they are written stderr,
3146 apparently, which is not desirable.
3147
3148 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
3149 queries.
3150
3151 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
3152 --not options
3153
3154 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
3155
3156 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
3157 authenticated or an ident call has been made. Suppress the default
3158 values for $authenticated_id and $authenticated_sender (but permit -oMai
3159 and -oMas) when testing with -bh.
3160
3161 PH/24 Re-jigged the order of the tests in the default configuration so that the
3162 tests for valid domains and recipients precede the DNS black list and CSA
3163 tests, on the grounds that those ones are more expensive.
3164
3165 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
3166 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
3167 This bug exists in every version of Exim that I still have, right back to
3168 0.12.
3169
3170 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
3171 However, an attempt to turn on case-sensitivity in a regex key by
3172 including (?-i) didn't work because the subject string was already
3173 lowercased, and the effects were non-intuitive. It turns out that a
3174 one-line patch can be used to allow (?-i) to work as expected.
3175
3176
3177 Exim version 4.62
3178 -----------------
3179
3180 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
3181 other effects) broke the use of negated acl sub-conditions.
3182
3183 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3184 patch).
3185
3186 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3187 "Deny" causes Exim to reject the incoming connection with a 554 error.
3188 Unfortunately, if there is a major crisis, such as a disk failure,
3189 tcp-wrappers gives "deny", whereas what one would like would be some
3190 kind of temporary error. A kludge has been added to help with this.
3191 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3192 554 error is used if errno is still zero or contains ENOENT (which occurs
3193 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3194 451 error is used.
3195
3196 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3197
3198 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3199 errors. Otherwise a message that provokes a temporary error (when other
3200 messages do not) can cause a whole host to time out.
3201
3202 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3203 addresses were routed directly to files or pipes from a redirect router.
3204 File deliveries just didn't batch; pipe deliveries might have suffered
3205 odd errors.
3206
3207 PH/06 A failure to get a lock for a hints database would erroneously always say
3208 "Failed to get write lock", even when it was really a read lock.
3209
3210 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3211 of 0600. This has been changed to use the value of the lockfile_mode
3212 option (which defaults to 0600).
3213
3214 PH/08 Applied small patch from the Sieve maintainer.
3215
3216 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3217 folder from quota calculations, a direct delivery into this folder messed
3218 up the contents of the maildirsize file. This was because the regex was
3219 used only to exclude .Trash (or whatever) when the size of the mailbox
3220 was calculated. There was no check that a delivery was happening into an
3221 excluded directory. This bug has been fixed by ignoring all quota
3222 processing for deliveries into excluded directories.
3223
3224 PH/10 Added the maildirfolder_create_regex option to appendfile.
3225
3226
3227 Exim version 4.61
3228 -----------------
3229
3230 PH/01 The code for finding all the local interface addresses on a FreeBSD
3231 system running IPv6 was broken. This may well have applied to all BSD
3232 systems, as well as to others that have similar system calls. The broken
3233 code found IPv4 interfaces correctly, but gave incorrect values for the
3234 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3235 that it would not match correctly against @[] and not recognize the IPv6
3236 addresses as local.
3237
3238 PH/02 The ipliteral router was not recognizing addresses of the form user@
3239 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3240
3241 PH/03 Added disable_ipv6.
3242
3243 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3244 decoded form, because it is most often used to construct To: headers
3245 lines in autoreplies, and the decoded form may well be syntactically
3246 invalid. However, $reply_address has leading white space removed, and all
3247 newlines turned into spaces so that the autoreply transport does not
3248 grumble.
3249
3250 PH/05 If group was specified without a user on a router, and no group or user
3251 was specified on a transport, the group from the router was ignored.
3252
3253 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3254 for visible compile-time settings that can be used to change these
3255 numbers, for those that want even more. Backwards compatibility with old
3256 spool files has been maintained. However, going back to a previous Exim
3257 release will lost any variables that are in spool files.
3258
3259 PH/07 Two small changes when running in the test harness: increase delay when
3260 passing a TCP/IP connection to a new process, in case the original
3261 process has to generate a bounce, and remove special handling of
3262 127.0.0.2 (sic), which is no longer necessary.
3263
3264 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3265 be the same on different OS.
3266
3267 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3268 testing.
3269
3270 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3271 whether --show-vars was specified or not
3272
3273 JJ/02 exipick: Added support for new ACL variable spool format introduced
3274 in 4.61-PH/06
3275
3276 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3277 syntactically invalid From: or Reply-to: line, and a filter used this to
3278 generate an autoreply, and therefore failed to obtain an address for the
3279 autoreply, Exim could try to deliver to a non-existent relative file
3280 name, causing unrelated and misleading errors. What now happens is that
3281 it logs this as a hard delivery error, but does not attempt to create a
3282 bounce message.
3283
3284 PH/11 The exinext utility has a -C option for testing purposes, but although
3285 the given file was scanned by exinext itself; it wasn't being passed on
3286 when Exim was called.
3287
3288 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3289 an end-of-file indication when reading a command response.
3290
3291 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3292 compiled. In many other places in Exim, IPv6 addresses are always
3293 recognized, so I have changed this. It also means that IPv4 domain
3294 literals of the form [IPV4:n.n.n.n] are now always recognized.
3295
3296 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3297 used if the router is not running as root, for example, when verifying at
3298 ACL time, or when using -bh. The debugging output from this situation was
3299 non-existent - all you got was a failure to exec. I have made two
3300 changes:
3301
3302 (a) Failures to set uid/gid, the current directory, or a process leader
3303 in a subprocess such as that created by queryprogram now generate
3304 suitable debugging output when -d is set.
3305
3306 (b) The queryprogram router detects when it is not running as root,
3307 outputs suitable debugging information if -d is set, and then runs
3308 the subprocess without attempting to change uid/gid.
3309
3310 PH/15 Minor change to Makefile for building test_host (undocumented testing
3311 feature).
3312
3313 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3314 additional section of a DNS packet that returns MX or SRV records.
3315 Instead, it always explicitly searches for A/AAAA records. This avoids
3316 major problems that occur when a DNS server includes only records of one
3317 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3318 fixed another bug: if SRV records were looked up and the corresponding
3319 address records were *not* found in the additional section, the port
3320 values from the SRV records were lost.
3321
3322 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3323 using the correct key (the original address) when searching the retry
3324 rules in order to find which one to use for generating the retry hint.
3325
3326 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3327 adding the default one. Similarly, if it contains a Reply-To: header, the
3328 errors_reply_to option, if set, is not used.
3329
3330 PH/19 When calculating a retry time, Exim used to measure the "time since
3331 failure" by looking at the "first failed" field in the retry record. Now
3332 it does not use this if it is later than than the arrival time of the
3333 message. Instead it uses the arrival time. This makes for better
3334 behaviour in cases where some deliveries succeed, thus re-setting the
3335 "first failed" field. An example is a quota failure for a huge message
3336 when small messages continue to be delivered. Without this change, the
3337 "time since failure" will always be short, possible causing more frequent
3338 delivery attempts for the huge message than are intended.
3339 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3340
3341 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3342 $1, $2, $3) because the numerical variables can be reset during some
3343 expansion items (e.g. "match"), thereby losing the authentication data.
3344
3345 PH/21 Make -bV show the size of off_t variables so that the test suite can
3346 decide whether to run tests for quotas > 2G.
3347
3348 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3349 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3350 filecount value is greater than 2G or if a quota value is greater than 2G
3351 on a system where the size of off_t is not greater than 4, a panic error
3352 is given.
3353
3354 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3355 never match. The debug and -bh output now contains an explicit error
3356 message indicating a malformed IPv4 address or mask.
3357
3358 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3359 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3360 PH/23 above applies.
3361
3362 PH/25 Do not write to syslog when running in the test harness. The only
3363 occasion when this arises is a failure to open the main or panic logs
3364 (for which there is an explicit test).
3365
3366 PH/26 Added the /no_tell option to "control=freeze".
3367
3368 PH/27 If a host name lookup failed very early in a connection, for example, if
3369 the IP address matched host_lookup and the reverse lookup yielded a name
3370 that did not have a forward lookup, an error message of the form "no IP
3371 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3372 could be logged. Now it outputs the IP address instead of "NULL".
3373
3374 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3375 allows the sender and the authenticated sender to be set when
3376 submitting a message from within Exim. Since child_open_exim() is
3377 documented for local_scan(), the new function should be too.
3378
3379 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3380 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3381 results in an empty string is now treated as unset.
3382
3383 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3384
3385 PH/31 Added sender_verify_fail logging option.
3386
3387 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3388 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3389 tidied the source and removed it altogether.
3390
3391 PH/33 When a queue run was abandoned because the load average was too high, a
3392 log line was always written; now it is written only if the queue_run log
3393 selector is set. In addition, the log line for abandonment now contains
3394 information about the queue run such as the pid. This is always present
3395 in "start" and "stop" lines but was omitted from the "abandon" line.
3396
3397 PH/34 Omit spaces between a header name and the colon in the error message that
3398 is given when verify = headers_syntax fails (if there are lots of them,
3399 the message gets confusing).
3400
3401 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3402 names, as there are now some PTR records that contain slashes. This check
3403 is only to protect against broken name servers that fall over on strange
3404 characters, so the fact that it applies to all lookups doesn't matter.
3405
3406 PH/36 Now that the new test suite is complete, we can remove some of the
3407 special code in Exim that was needed for the old test suite. For example,
3408 sorting DNS records because real resolvers return them in an arbitrary
3409 order. The new test suite's fake resolver always returns records in the
3410 same order.
3411
3412 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3413 bounces) except when queue_only is set, to avoid logging races between
3414 the different processes.
3415
3416 PH/38 Panic-die if .include specifies a non-absolute path.
3417
3418 PH/39 A tweak to the "H" retry rule from its user.
3419
3420 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3421 a label. They prevented compilation on older perls.
3422
3423 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3424 a warning to be raised on newish perls.
3425
3426 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3427 on queue. Changes to match documented behaviour of showing count of
3428 messages matching specified criteria.
3429
3430 PH/40 Changed the default ident timeout from 30s to 5s.
3431
3432 PH/41 Added support for the use of login_cap features, on those BSD systems
3433 that have them, for controlling the resources used by pipe deliveries.
3434
3435 PH/42 The content-scanning code uses fopen() to create files in which to put
3436 message data. Previously it was not paying any attention to the mode of
3437 the files. Exim runs with umask(0) because the rest of the code creates
3438 files with open(), and sets the required mode explicitly. Thus, these
3439 files were ending up world-writeable. This was not a big issue, because,
3440 being within the spool directory, they were not world-accessible. I have
3441 created a function called modefopen, which takes an additional mode
3442 argument. It sets umask(777), creates the file, chmods it to the required
3443 mode, then resets the umask. All the relevant calls to fopen() in the
3444 content scanning code have been changed to use this function.
3445
3446 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3447 to 24 hours. This avoids potential overflow problems when processing G
3448 and H retry rules. I suspect nobody ever tinkers with this value.
3449
3450 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3451
3452 PH/45 When the plaintext authenticator is running as a client, the server's
3453 challenges are checked to ensure they are valid base64 strings. By
3454 default, the authentication attempt is cancelled if an invalid string is
3455 received. Setting client_ignore_invalid_base64 true ignores these errors.
3456 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3457 they are received. Thus, the responses can be made to depend on the
3458 challenges. If an invalid string is ignored, an empty string is placed in
3459 the variable.
3460
3461 PH/46 Messages that are created by the autoreply transport now contains a
3462 References: header, in accordance with RFCs 2822 and 3834.
3463
3464 PH/47 Added authenticated_sender_force to the smtp transport.
3465
3466 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3467
3468 PH/49 Installed latest patch from the Sieve maintainer.
3469
3470 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3471 was also set, the appendfile transport was unnecessarily scanning a
3472 directory of message files (e.g. for maildir delivery) to find the count
3473 of files (along with the size), even though it did not need this
3474 information. It now does the scan only if it needs to find either the
3475 size of the count of files.
3476
3477 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3478
3479 PH/52 Two bugs concerned with error handling when the smtp transport is
3480 used in LMTP mode:
3481
3482 (i) Exim was not creating retry information for temporary errors given
3483 for individual recipients after the DATA command when the smtp transport
3484 was used in LMTP mode. This meant that they could be retried too
3485 frequently, and not timed out correctly.
3486
3487 (ii) Exim was setting the flag that allows error details to be returned
3488 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3489 recipients that were returned after the DATA command.
3490
3491 PH/53 This is related to PH/52, but is more general: for any failing address,
3492 when detailed error information was permitted to be returned to the
3493 sender, but the error was temporary, then after the final timeout, only
3494 "retry timeout exceeded" was returned. Now it returns the full error as
3495 well as "retry timeout exceeded".
3496
3497 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3498 do this, and (what is worse) MTAs that accept it.
3499
3500 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3501 will now be deprecated.
3502
3503 PH/56 New os.c-cygwin from the Cygwin maintainer.
3504
3505 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3506 formats (previously only available in exim formats via -bpr, -bpru,
3507 and -bpra. Now also available in native and exiqgrep formats)
3508
3509 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3510 with very large, slow to parse queues
3511
3512 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3513
3514 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3515
3516 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3517 responses to authentication challenges, though it was showing the
3518 challenges; (ii) I've removed the CR characters from the debug output for
3519 SMTP output lines.
3520
3521 PH/58 Allow for the insertion of a newline as well as a space when a string
3522 is turned into more than one encoded-word during RFC 2047 encoding. The
3523 Sieve code now uses this.
3524
3525 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3526 data_4xx, lost_connection, tls_required.
3527
3528 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3529 message was being sent as an SMTP response.
3530
3531 PH/61 Add -l and -k options to exicyclog.
3532
3533 PH/62 When verifying, if an address was redirected to one new address, so that
3534 verification continued, and the new address failed or deferred after
3535 having set something in $address_data, the value of $address_data was not
3536 passed back to the ACL. This was different to the case when no
3537 redirection occurred. The value is now passed back in both cases.
3538
3539 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3540 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3541 use login_cap.h, so on its own it isn't the distinguishing feature. The
3542 new name refers directly to the setclassresources() function.
3543
3544 PH/65 Added configuration files for NetBSD3.
3545
3546 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3547
3548 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3549 is preferred over IPv4.
3550
3551 PH/68 The bounce_return_message and bounce_return_body options were not being
3552 honoured for bounces generated during the reception of non-SMTP messages.
3553 In particular, this applied to messages rejected by the ACL. This bug has
3554 been fixed. However, if bounce_return_message is true and bounce_return_
3555 body is false, the headers that are returned for a non-SMTP message
3556 include only those that have been read before the error was detected.
3557 (In the case of an ACL rejection, they have all been read.)
3558
3559 PH/69 The HTML version of the specification is now built in a directory called
3560 spec_html instead of spec.html, because the latter looks like a path with
3561 a MIME-type, and this confuses some software.
3562
3563 PH/70 Catch two compiler warnings in sieve.c.
3564
3565 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3566 function verify_get_ident() calls ip_connect() to connect a socket, but
3567 if the "connect()" function timed out, ip_connect() used to close the
3568 socket. However, verify_get_ident() also closes the socket later, and in
3569 between Exim writes to the log, which may get opened at this point. When
3570 the socket was closed in ip_connect(), the log could get the same file
3571 descriptor number as the socket. This naturally causes chaos. The fix is
3572 not to close the socket in ip_connect(); the socket should be closed by
3573 the function that creates it. There was only one place in the code where
3574 this was missing, in the iplookup router, which I don't think anybody now
3575 uses, but I've fixed it anyway.
3576
3577 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3578 well as to direct DNS lookups. Otherwise the handling of names in host
3579 lists is inconsistent and therefore confusing.
3580
3581
3582 Exim version 4.60
3583 -----------------
3584
3585 PH/01 Two changes to the default runtime configuration:
3586
3587 (1) Move the checks for relay_from_hosts and authenticated clients from
3588 after to before the (commented out) DNS black list checks.
3589
3590 (2) Add control=submission to the relay_from_hosts and authenticated
3591 clients checks, on the grounds that messages accepted by these
3592 statements are most likely to be submissions.
3593
3594 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3595
3596 (1) Generate an error if the third argument for the ${prvs expansion is
3597 not a single digit.
3598
3599 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3600 string.
3601
3602 (3) Reset the variables that are obtained from the first argument of
3603 ${prvscheck and used in the second argument before leaving the code,
3604 because their memory is reclaimed, so using them afterwards may do
3605 silly things.
3606
3607 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3608 one (it's much easier than Tom thought :-).
3609
3610 (5) Because of (4), we can now allow for the use of $prvscheck_result
3611 inside the third argument.
3612
3613 PH/03 For some reason, the default setting of PATH when running a command from
3614 a pipe transport was just "/usr/bin". I have changed it to
3615 "/bin:/usr/bin".
3616
3617 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
3618 anything to be listed in the output from -bV.
3619
3620 PH/05 When a filter generated an autoreply, the entire To: header line was
3621 quoted in the delivery log line, like this:
3622
3623 => >A.N.Other <ano@some.domain> <original@ddress> ...
3624
3625 This has been changed so that it extracts the operative address. There
3626 may be more than one such address. If so, they are comma-separated, like
3627 this:
3628
3629 => >ano@some.domain,ona@other.domain <original@ddress> ...
3630
3631 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3632 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
3633 not being looked up in the rDNS to get a host name, Exim was showing the
3634 IP address twice in Received: lines, even though the IP addresses were
3635 identical. For example:
3636
3637 Received: from [1.2.3.4] (helo=[1.2.3.4])
3638
3639 However, if the real host name was known, it was omitting the HELO data
3640 if it matched the actual IP address. This has been tidied up so that it
3641 doesn't show the same IP address twice.
3642
3643 PH/07 When both +timestamp and +memory debugging was on, the value given by
3644 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3645 called by the debug printing, thereby overwriting the timestamp buffer.
3646 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3647
3648 PH/08 When the original message was included in an autoreply transport, it
3649 always said "this is a copy of the message, including all the headers",
3650 even if body_only or headers_only was set. It now gives an appropriate
3651 message.
3652
3653 PH/09 Applied a patch from the Sieve maintainer which:
3654
3655 o fixes some comments
3656 o adds the (disabled) notify extension core
3657 o adds some debug output for the result of if/elsif tests
3658 o points to the current vacation draft in the documentation
3659 and documents the missing references header update
3660
3661 and most important:
3662
3663 o fixes a bug in processing the envelope test (when testing
3664 multiple envelope elements, the last element determined the
3665 result)
3666
3667 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3668 Electronic Mail") by including:
3669
3670 Auto-submitted: auto-generated
3671
3672 in the messages that it generates (bounce messages and others, such as
3673 warnings). In the case of bounce messages for non-SMTP messages, there was
3674 also a typo: it was using "Auto_submitted" (underscore instead of
3675 hyphen). Since every message generated by Exim is necessarily in response
3676 to another message, thes have all been changed to:
3677
3678 Auto-Submitted: auto-replied
3679
3680 in accordance with these statements in the RFC:
3681
3682 The auto-replied keyword:
3683
3684 - SHOULD be used on messages sent in direct response to another
3685 message by an automatic process,
3686
3687 - MUST NOT be used on manually-generated messages,
3688
3689 - MAY be used on Delivery Status Notifications (DSNs) and Message
3690 Disposition Notifications (MDNs),
3691
3692 - MUST NOT be used on messages generated by automatic or periodic
3693 processes, except for messages which are automatic responses to
3694 other messages.
3695
3696 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3697 to the default Received: header definition.
3698
3699 PH/12 Added log selector acl_warn_skipped (default on).
3700
3701 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3702 variables because (a) they are in the wrong storage pool and (b) even if
3703 they were copied, it wouldn't work properly because of the caching.
3704
3705 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3706 checking when decoding. Apparently there are clients that generate
3707 overlong encoded strings. Why am I not surprised?
3708
3709 PH/15 If the first argument of "${if match_address" was not empty, but did not
3710 contain an "@" character, Exim crashed. Now it writes a panic log message
3711 and treats the condition as false.
3712
3713 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3714
3715 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3716 extension "envelope-auth". The code is finished and in agreement with
3717 other implementations, but there is no documentation so far and in fact,
3718 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3719 not changing the active code.
3720
3721 Print executed "if" and "elsif" statements when debugging is used. This
3722 helps a great deal to understand what a filter does.
3723
3724 Document more things not specified clearly in RFC3028. I had all this
3725 sorted out, when out of a sudden new issues came to my mind. Oops."
3726
3727 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3728 (Bugzilla #53).
3729
3730 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3731 canonical form (as documented). However, after a host name lookup from
3732 the IP address, check_host() was doing a simple string comparison with
3733 addresses acquired from the DNS when checking that the found name did
3734 have the original IP as one of its addresses. Since any found IPv6
3735 addresses are likely to be in abbreviated form, the comparison could
3736 fail. Luckily, there already exists a function for doing the comparison
3737 by converting both addresses to binary, so now that is used instead of
3738 the text comparison.
3739
3740 PH/20 There was another similar case to PH/19, when a complete host name was
3741 given in a host list; looking up its IP address could give an abbreviated
3742 form, whereas the current host's name might or might not be abbreviated.
3743 The same fix has been applied.
3744
3745
3746 Exim version 4.54
3747 -----------------
3748
3749 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3750 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3751 It now does.
3752
3753 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3754 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3755
3756 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3757
3758 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3759 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3760 Also, for "Auto-Submitted", treat anything other than "no" as
3761 non-personal, in accordance with RFC 3834. (Previously it treated
3762 anything starting "auto-" as non-personal.)
3763
3764 TF/01 The control=submission/name=... option had a problem with syntax
3765 errors if the name included a slash character. The /name= option
3766 now slurps the rest of the string, so it can include any characters
3767 but it must come last in the list of options (after /sender_retain
3768 or /domain=).
3769
3770 PH/05 Some modifications to the interface to the fake nameserver for the new
3771 testing suite.
3772
3773
3774
3775 Exim version 4.53
3776 -----------------
3777
3778 TK/01 Added the "success_on_redirect" address verification option. See
3779 NewStuff for rationale and an example.
3780
3781 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3782
3783 PH/02 Patch to exigrep to allow it to work on syslog lines.
3784
3785 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3786 fread() to skip over the body file's header line, because in Cygwin the
3787 header line is locked and is inaccessible.
3788
3789 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3790 co-exist for some time) to make it clear that it is the Exim ID that is
3791 referenced, not the Message-ID: header line.
3792
3793 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3794 string_format() function, because snprintf() does not exist on all
3795 operating systems.
3796
3797 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3798 ${stat: expansion item.
3799
3800 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3801 protocol synchronization error", to keep the pedants happy.
3802
3803 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
3804 well as for IRIX systems, when gcc is being used. See the host.c source
3805 file for comments.
3806
3807 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3808
3809 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3810 setting.
3811
3812 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
3813 transport and to the smtp transport in LMTP mode.
3814
3815 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
3816
3817 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
3818 run a filter in a subprocess. This could lead to confusion in subsequent
3819 lookups in the parent process. There should also be a search_tidyup() at
3820 the end of the subprocess.
3821
3822 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
3823 only if the host matched helo_try_verify_hosts, which caused the
3824 verification to occur when the EHLO/HELO command was issued. The ACL just
3825 tested the remembered result. Now, if a previous verification attempt has
3826 not happened, "verify = helo" does it there and then.
3827
3828 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
3829
3830 TK/03 Fix log output including CR from clamd.
3831
3832 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
3833 exist provoked a memory error which could cause a segfault.
3834
3835 PH/15 Installed PCRE 6.2
3836
3837 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
3838
3839 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
3840 of the problem. Specifically, suggested +O2 rather than +O1 for the
3841 HP-UX compiler.
3842
3843 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
3844
3845 PH/20 If a delivery was routed to a non-standard port by means of an SRV
3846 record, the port was not correctly logged when the outgoing_port log
3847 selector was set (it logged the transort's default port).
3848
3849 PH/21 Added support for host-specific ports to manualroute, queryprogram,
3850 fallback_hosts, and "hosts" in the smtp transport.
3851
3852 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
3853 host errors such as "Connection refused".
3854
3855 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
3856 authentication with radiusclient 0.4.9:
3857
3858 - Error returned from rc_read_config was caught wrongly
3859 - Username/password not passed on to radius server due to wrong length.
3860
3861 The presumption is that some radiusclient API changes for 4.51/PH/17
3862 were not taken care of correctly. The code is still untested by me (my
3863 Linux distribution still has 0.3.2 of radiusclient), but it was
3864 contributed by a Radius user.
3865
3866 PH/24 When doing a callout, the value of $domain wasn't set correctly when
3867 expanding the "port" option of the smtp transport.
3868
3869 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
3870 while reading a MIME header. Thanks to Tom Hughes for a patch.
3871
3872 PH/24 Include config.h inside local_scan.h so that configuration settings are
3873 available.
3874
3875 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
3876 that in an ACL for RCPT (for example), you can examine exactly what was
3877 received.
3878
3879 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
3880 commands, but it was not correctly comparing the address with the actual
3881 client host address. Thus, it would show the EHLO address in Received:
3882 header lines when this was not necessary.
3883
3884 PH/27 Added the % operator to ${eval:}.
3885
3886 PH/28 Exim tries to create and chdir to its spool directory when it starts;
3887 it should be ignoring failures (because with -C, for example, it has lost
3888 privilege). It wasn't ignoring creation failures other than "already
3889 exists".
3890
3891 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
3892 -bV or -d is used.
3893
3894 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
3895 because an input line was too long, either on its own, or by virtue of
3896 too many continuations, the temporary file was not being removed, and the
3897 return code was incorrect.
3898
3899 PH/31 Missing "BOOL" in function definition in filtertest.c.
3900
3901 PH/32 Applied Sieve patches from the maintainer.
3902
3903 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
3904
3905 PH/33 Added "verify = not_blind".
3906
3907 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
3908 Local/Makefile (with some defaults set). These are used in built scripts
3909 such as exicyclog, but they have never been used in the exim_install
3910 script (though there are many overriding facilities there). I have
3911 arranged that the exim_install script now takes note of these two
3912 settings.
3913
3914 PH/35 Installed configuration files for Dragonfly.
3915
3916 PH/36 When a locally submitted message by a trusted user did not contain a
3917 From: header, and the sender address was obtained from -f or from an SMTP
3918 MAIL command, and the trusted user did not use -F to supply a sender
3919 name, $originator_name was incorrectly used when constructing a From:
3920 header. Furthermore, $originator_name was used for submission mode
3921 messages from external hosts without From: headers in a similar way,
3922 which is clearly wrong.
3923
3924 PH/37 Added control=suppress_local_fixups.
3925
3926 PH/38 When log_selector = +received_sender was set, and the addition of the
3927 sender made the log line's construction buffer exactly full, or one byte
3928 less than full, an overflow happened when the terminating "\n" was
3929 subsequently added.
3930
3931 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
3932 when the result of a list match is failure because a DNS lookup failed.
3933
3934 PH/40 RM_COMMAND is now used in the building process.
3935
3936 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
3937 the "build-* directories that it finds.
3938
3939 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
3940 address in a domain literal was a prefix of an interface address.
3941
3942 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
3943 when verifying a sender address, unless rewrite_headers is false.
3944
3945 PH/44 Wrote a long comment about why errors_to addresses are verified as
3946 recipients, not senders.
3947
3948 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
3949 the ratelimit ACL was added.
3950
3951 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
3952
3953 PH/46 Added extra information about PostgreSQL errors to the error string.
3954
3955 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
3956 avoiding the need to install special zones in a real server. This is
3957 backwards compatible; if it can't find the fake resolver, it drops back.
3958 Thus, both old and new test suites can be run.
3959
3960 TF/02 Added util/ratelimit.pl
3961
3962 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
3963 clock is set back in time.
3964
3965 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
3966 Candler <B.Candler@pobox.com>.
3967
3968 TF/05 The fix for PH/43 was not completely correct; widen_domains is always
3969 OK for addresses that are the result of redirections.
3970
3971 PH/48 A number of further additions for the benefit of the new test suite,
3972 including a fake gethostbyname() that interfaces to the fake DNS resolver
3973 (see PH/47 above).
3974
3975 TF/06 The fix for widen_domains has also been applied to qualify_single and
3976 search_parents which are the other dnslookup options that can cause
3977 header rewrites.
3978
3979 PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
3980 type ("H").
3981
3982 PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
3983
3984 TF/07 Exim produced the error message "an SRV record indicated no SMTP
3985 service" if it encountered an MX record with an empty target hostname.
3986 The message is now "an MX or SRV record indicated no SMTP service".
3987
3988 TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
3989 if the DNS of the sending site is misconfigured. This is quite a
3990 common situation. This change restores the behaviour of treating a
3991 helo verification defer as a failure.
3992
3993 PH/51 If self=fail was set on a router, the bounce message did not include the
3994 actual error message.
3995
3996
3997 Exim version 4.52
3998 -----------------
3999
4000 TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
4001
4002 PH/01 When a transport filter timed out in a pipe delivery, and the pipe
4003 command itself ended in error, the underlying message about the transport
4004 filter timeout was being overwritten with the pipe command error. Now the
4005 underlying error message should be appended to the second error message.
4006
4007 TK/01 Fix poll() being unavailable on Mac OSX 10.2.
4008
4009 PH/02 Reduce the amount of output that "make" produces by default. Full output
4010 can still be requested.
4011
4012 PH/03 The warning log line about a condition test deferring for a "warn" verb
4013 was being output only once per connection, rather than after each
4014 occurrence (because it was using the same function as for successful
4015 "warn" verbs). This seems wrong, so I have changed it.
4016
4017 TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
4018 it should not have, which might have caused a crash in the right
4019 circumstances, but probably never did.
4020
4021 PH/04 Installed a modified version of Tony Finch's patch to make submission
4022 mode fix the return path as well as the Sender: header line, and to
4023 add a /name= option so that you can make the user's friendly name appear
4024 in the header line.
4025
4026 TF/03 Added the control = fakedefer ACL modifier.
4027
4028 TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
4029 Mark Lowes for thorough testing.
4030
4031 TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
4032
4033 TK/03 Merged latest SRS patch from Miles Wilton.
4034
4035 PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
4036 with the definition in sysexits.h (which is #included earlier).
4037 Fortunately, Exim does not actually use EX_OK. The code used to try to
4038 preserve the sysexits.h value, by assuming that macro definitions were
4039 scanned for macro replacements. I have been disabused of this notion,
4040 so now the code just undefines EX_OK before #including unistd.h.
4041
4042 PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
4043 in the smtp transport. When a block could not be written in a single
4044 write() function, the timeout was being re-applied to each part-write.
4045 This seems wrong - if the receiver was accepting one byte at a time it
4046 would take for ever. The timeout is now adjusted when this happens. It
4047 doesn't have to be particularly precise.
4048
4049 TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
4050 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
4051
4052 PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
4053 without a domain if the check to <postmaster@domain> fails.
4054
4055 SC/01 Eximstats: added -xls and the ability to specify output files
4056 (patch written by Frank Heydlauf).
4057
4058 SC/02 Eximstats: use FileHandles for outputting results.
4059
4060 SC/03 Eximstats: allow any combination of xls, txt, and html output.
4061
4062 SC/04 Eximstats: fixed display of large numbers with -nvr option
4063
4064 SC/05 Eximstats: fixed merging of reports with empty tables.
4065
4066 SC/06 Eximstats: added the -include_original_destination flag
4067
4068 SC/07 Eximstats: removed tabs and trailing whitespace.
4069
4070 TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
4071
4072 TK/06 MBOX spool code: Add real "From " MBOX separator line
4073 so the .eml file is really in mbox format (even though
4074 most programs do not really care). Patch from Alex Miller.
4075
4076 TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
4077 The latter is generated from $received_to and is only set if the
4078 message has one envelope recipient. SA can use these headers,
4079 obviously out-of-the-box. Patch from Alex Miller.
4080
4081 PH/08 The ${def test on a variable was returning false if the variable's
4082 value was "0", contrary to what the specification has always said!
4083 The result should be true unless the variable is empty.
4084
4085 PH/09 The syntax error of a character other than { following "${if
4086 def:variable_name" (after optional whitespace) was not being diagnosed.
4087 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
4088 accidental colon was present, for example, could give incorrect results.
4089
4090 PH/10 Tidied the code in a number of places where the st_size field of a stat()
4091 result is used (not including appendfile, where other changes are about
4092 to be made).
4093
4094 PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
4095 This involved changing a lot of size variables from int to off_t. It
4096 should work with maildirs and everything.
4097
4098 TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
4099 spamd dying while we are connected to it.
4100
4101 TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
4102 <jgh@wizmail.org>
4103
4104 PH/12 Applied Alex Kiernan's patch for the API change for the error callback
4105 function for BDB 4.3.
4106
4107 PH/13 Changed auto_thaw such that it does not apply to bounce messages.
4108
4109 PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
4110 the sources for PCRE have been re-arranged and more files are now
4111 involved.
4112
4113 PH/15 The code I had for printing potentially long long variables in PH/11
4114 above was not the best (it lost precision). The length of off_t variables
4115 is now inspected at build time, and an appropriate printing format (%ld
4116 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
4117 to be "long long int" or "long int". This is needed for the internal
4118 formatting function string_vformat().
4119
4120 PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
4121 the configuration file to be ":syslog", then the script "guesses" where
4122 the logs files are, rather than using the compiled in default. In our
4123 case the guess is not the same as the compiled default, so the script
4124 suddenly stopped working when I started to use syslog. The patch checks
4125 to see if log_file_path is "". If so, it attempts to read it from exim
4126 with no configuration file to get the compiled in version, before it
4127 falls back to the previous guessing code."
4128
4129 TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
4130 implementing BATV in an Exim configuration. See NewStuff for the gory
4131 details.
4132
4133 PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
4134 Makefile that are specific to HP-UX.
4135
4136 PH/18 If the "use_postmaster" option was set for a recipient callout together
4137 with the "random" option, the postmaster address was used as the MAIL
4138 FROM address for the random test, but not for the subsequent recipient
4139 test. It is now used for both.
4140
4141 PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
4142 patch removes a few documentation additions to RFC 3028, because the
4143 latest draft now contains them. It adds the new en;ascii-case comparator
4144 and a new error check for 8bit text in MIME parts. Comparator and
4145 require names are now matched exactly. I enabled the subaddress
4146 extension, but it is not well tested yet (read: it works for me)."
4147
4148 PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
4149 rework some of the code of TK/09 above to avoid the hardwired use of
4150 "%lld" and "long long". Replaced the call to snprintf() with a call to
4151 string_vformat().
4152
4153 PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
4154 records point to non-existent hosts", "retry timeout exceeded", and
4155 "retry time not reached for any host after a long failure period".
4156
4157 PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
4158 experimental DomainKeys support:
4159
4160 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
4161 (2) On an error such as an illegally used "control", the wrong name for
4162 the control was given.
4163
4164 These problems did NOT occur unless DomainKeys support was compiled.
4165
4166 PH/23 Added daemon_startup_retries and daemon_startup_sleep.
4167
4168 PH/24 Added ${if match_ip condition.
4169
4170 PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
4171 databases so that it will be absolutely obvious if a crash occurs in the
4172 DB library. This is a regular occurrence (often caused by mis-matched
4173 db.h files).
4174
4175 PH/26 Insert a lot of missing (void) casts for functions such as chown(),
4176 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
4177 picked up on a user's system that detects such things. There doesn't seem
4178 to be a gcc warning option for this - only an attribute that has to be
4179 put on the function's prototype. It seems that in Fedora Core 4 they have
4180 set this on a number of new functions. No doubt there will be more in due
4181 course.
4182
4183 PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
4184 specify a transport. However, if an address that was verified by such a
4185 router was the subject of a callout, Exim crashed because it tried to
4186 read the rcpt_include_affixes from the non-existent transport. Now it
4187 just assumes that the setting of that option is false. This bug was
4188 introduced by 4.51/PH/31.
4189
4190 PH/28 Changed -d+all to exclude +memory, because that information is very
4191 rarely of interest, but it makes the output a lot bigger. People tend to
4192 do -d+all out of habit.
4193
4194 PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
4195 code in os-type was giving problems when libc.so lives in lib64, like on
4196 x86_64 Fedora Core.
4197
4198 PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
4199 aren't the modern standard, and it seems that some systems' include files
4200 don't always have them. Exim was already checking for some of the newer
4201 ones like T_AAAA, and defining it itself. I've added checks for all the
4202 record types that Exim uses.
4203
4204 PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
4205 not automatically generating a new one, as it is supposed to. This
4206 prevented TLS from working. If the file did exist, but contained invalid
4207 data, a new version was generated, as expected. It was only the case of a
4208 non-existent file that was broken.
4209
4210 TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
4211 with a change in libdomainkeys > 0.64.
4212
4213 TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
4214 from DNS. If the selector record carries the flag, it now has
4215 precedence over the domain-wide flag.
4216
4217 TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
4218
4219 PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
4220 the use of a port name that isn't defined in /etc/services) occurred, the
4221 message was deferred as in a normal delivery, and thus remained on the
4222 spool, instead of being failed because of the mua_wrapper setting. This
4223 is now fixed, and I tidied up some of the mua_wrapper messages at the
4224 same time.
4225
4226 SC/08 Eximstats: whilst parsing the mainlog(s), store information about
4227 the messages in a hash of arrays rather than using individual hashes.
4228 This is a bit cleaner and results in dramatic memory savings, albeit
4229 at a slight CPU cost.
4230
4231 SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
4232 as requested by Marc Sherman.
4233
4234 SC/10 Eximstats: added histograms for user specified patterns as requested
4235 by Marc Sherman.
4236
4237 SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
4238
4239 PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
4240 fopen() in the content-scanning modules that did not already have it.
4241
4242
4243 Exim version 4.51
4244 -----------------
4245
4246 TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
4247 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
4248
4249 TK/02 Fix ACL "control" statement not being available in MIME ACL.
4250
4251 TK/03 Fix ACL "regex" condition not being available in MIME ACL.
4252
4253 PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
4254 to test Sieve filters that use "vacation".
4255
4256 PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
4257 that changes the way the GnuTLS parameters are stored in the cache file.
4258 The new format can be generated externally. For backward compatibility,
4259 if the data in the cache doesn't make sense, Exim assumes it has read an
4260 old-format file, and it generates new data and writes a new file. This
4261 means that you can't go back to an older release without removing the
4262 file.
4263
4264 PH/03 A redirect router that has both "unseen" and "one_time" set does not
4265 work if there are any delivery delays because "one_time" forces the
4266 parent to be marked "delivered", so its unseen clone is never tried
4267 again. For this reason, Exim now forbids the simultaneous setting of
4268 these two options.
4269
4270 PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
4271 redirected to themselves ("homonym" addresses). Read the long ChangeLog
4272 entry if you want to know the details. The fix, however, neglected to
4273 consider the case when local delivery batching is involved. The test for
4274 "previously delivered" was not happening when checking to see if an
4275 address could be batched with a previous (undelivered) one; under
4276 certain circumstances this could lead to multiple deliveries to the same
4277 address.
4278
4279 PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
4280 in its include files, and this causes problems building Exim.
4281
4282 PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
4283 header_syntax) but Exim was just ignoring anything given after a slash.
4284 In particular, this caused confusion with an attempt to use "verify =
4285 reverse_host_lookup/defer_ok". An error is now given when options are
4286 supplied for verify items that do not have them. (Maybe reverse_host_
4287 lookup should have a defer_ok option, but that's a different point.)
4288
4289 PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
4290 defined by RFC 821) to 2048, because there were problems with some AUTH
4291 commands, and RFC 1869 says the size should be increased for extended
4292 SMTP commands that take arguments.
4293
4294 PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
4295 Finch).
4296
4297 PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
4298 "unknown" error; now it says that the functionality isn't in the binary.
4299
4300 PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
4301 an address' error message when a string expansion fails (syntax or
4302 whatever). Otherwise the password may appear in the log. Following change
4303 PH/42 below, there is no longer a chance of it appearing in a bounce
4304 message.
4305
4306 PH/11 Installed exipick version 20050225.0 from John Jetmore.
4307
4308 PH/12 If the last host in a fallback_hosts list was multihomed, only the first
4309 of its addresses was ever tried. (Bugzilla bug #2.)
4310
4311 PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
4312 the result incorrectly in the debug output. (It correctly added a newline
4313 to what was transported.)
4314
4315 TF/01 Added $received_time.
4316
4317 PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
4318 commented out examples of how to interface to a virus scanner and to
4319 SpamAssassin. Also added commented examples of av_scanner and
4320 spamd_address settings.
4321
4322 PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
4323 and controls are allowed in which ACLs. There were a couple of minor
4324 errors. Some of the entries in the conditions table (which is a table of
4325 where they are NOT allowed) were getting very unwieldy; rewrote them as a
4326 negation of where the condition IS allowed.
4327
4328 PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
4329
4330 PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
4331 header file does not have a version number, so I've had to invent a new
4332 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
4333 API. The code is untested by me (my Linux distribution still has 0.3.2 of
4334 radiusclient), but it was contributed by a Radius user.
4335
4336 PH/18 Installed Lars Mainka's patch for the support of CRL collections in
4337 files or directories, for OpenSSL.
4338
4339 PH/19 When an Exim process that is running as root has to create an Exim log
4340 file, it does so in a subprocess that runs as exim:exim so as to get the
4341 ownership right at creation (otherwise, other Exim processes might see
4342 the file with the wrong ownership). There was no test for failure of this
4343 fork() call, which would lead to the process getting stuck as it waited
4344 for a non-existent subprocess. Forks do occasionally fail when resources
4345 run out. I reviewed all the other calls to fork(); they all seem to check
4346 for failure.
4347
4348 PH/20 When checking for unexpected SMTP input at connect time (before writing
4349 the banner), Exim was not dealing correctly with a non-positive return
4350 from the read() function. If the client had disconnected by this time,
4351 the result was a log entry for a synchronization error with an empty
4352 string after "input=" when read() returned zero. If read() returned -1
4353 (an event I could not check), uninitialized data bytes were printed.
4354 There were reports of junk text (parts of files, etc) appearing after
4355 "input=".
4356
4357 PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
4358
4359 PH/22 Added support for macro redefinition, and (re)definition in between
4360 driver and ACL definitions.
4361
4362 PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
4363 forgetting to use the resulting value; it was using the unexpanded value.
4364
4365 PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
4366 hadn't been configured. The fix is from Juergen Kreileder, who
4367 understands it better than I do:
4368
4369 "Here's what I see happening with three configured cyrus_sasl
4370 authenticators configured (plain, login, cram-md5):
4371
4372 On startup auth_cyrus_sasl_init() gets called for each of these.
4373 This means three calls to sasl_listmech() without a specified mech_list.
4374 => SASL tests which mechs of all available mechs actually work
4375 => three warnings about OTP not working
4376 => the returned list contains: plain, login, cram-md5, digest-md5, ...
4377
4378 With the patch, sasl_listmech() also gets called three times. But now
4379 SASL's mech_list option is set to the server_mech specified in the the
4380 authenticator. Or in other words, the answer from sasl_listmech()
4381 gets limited to just the mech you're testing for (which is different
4382 for each call.)
4383 => the return list contains just 'plain' or 'login', 'cram-md5' or
4384 nothing depending on the value of ob->server_mech.
4385
4386 I've just tested the patch: Authentication still works fine,
4387 unavailable mechs specified in the exim configuration are still
4388 caught, and the auth.log warnings about OTP are gone."
4389
4390 PH/25 When debugging is enabled, the contents of the command line are added
4391 to the debugging output, even when log_selector=+arguments is not
4392 specified.
4393
4394 PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
4395 answer is "GNU", and only if the return is "GNU/something" is the answer
4396 "Linux".
4397
4398 PH/27 $acl_verify_message is now set immediately after the failure of a
4399 verification in an ACL, and so is available in subsequent modifiers. In
4400 particular, the message can be preserved by coding like this:
4401
4402 warn !verify = sender
4403 set acl_m0 = $acl_verify_message
4404
4405 Previously, $acl_verify_message was set only while expanding "message"
4406 and "log_message" when a very denied access.
4407
4408 PH/28 Modified OS/os.c-Linux with
4409
4410 -#ifndef OS_LOAD_AVERAGE
4411 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
4412
4413 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
4414 nomenclature these days.)
4415
4416 PH/29 Installed patch from the Sieve maintainer that adds the options
4417 sieve_useraddress and sieve_subaddress to the redirect router.
4418
4419 PH/30 In these circumstances:
4420 . Two addresses routed to the same list of hosts;
4421 . First host does not offer TLS;
4422 . First host accepts first address;
4423 . First host gives temporary error to second address;
4424 . Second host offers TLS and a TLS session is established;
4425 . Second host accepts second address.
4426 Exim incorrectly logged both deliveries with the TLS parameters (cipher
4427 and peerdn, if requested) that were in fact used only for the second
4428 address.
4429
4430 PH/31 When doing a callout as part of verifying an address, Exim was not paying
4431 attention to any local part prefix or suffix that was matched by the
4432 router that accepted the address. It now behaves in the same way as it
4433 does for delivery: the affixes are removed from the local part unless
4434 rcpt_include_affixes is set on the transport.
4435
4436 PH/32 Add the sender address, as F=<...>, to the log line when logging a
4437 timeout during the DATA phase of an incoming message.
4438
4439 PH/33 Sieve envelope tests were broken for match types other than :is. I have
4440 applied a patch sanctioned by the Sieve maintainer.
4441
4442 PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
4443 the uid or gid is negative. A case of a negative gid caused this to be
4444 noticed. The fix allows for either to be negative.
4445
4446 PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
4447 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
4448 overlooked.
4449
4450 PH/36 The change PH/12 above was broken. Fixed it.
4451
4452 PH/37 Exim used to check for duplicate addresses in the middle of routing, on
4453 the grounds that routing the same address twice would always produce the
4454 same answer. This might have been true once, but it is certainly no
4455 longer true now. Routing a child address may depend on the previous
4456 routing that produced that child. Some complicated redirection strategies
4457 went wrong when messages had multiple recipients, and made Exim's
4458 behaviour dependent on the order in which the addresses were given.
4459
4460 I have moved the duplicate checking until after the routing is complete.
4461 Exim scans the addresses that are assigned to local and remote
4462 transports, and removes any duplicates. This means that more work will be
4463 done, as duplicates will always all be routed, but duplicates are
4464 presumably rare, so I don't expect this is of any significance.
4465
4466 For deliveries to pipes, files, and autoreplies, the duplicate checking
4467 still happens during the routing process, since they are not going to be
4468 routed further.
4469
4470 PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
4471 It corrects a timeout issue with spamd. This is Ian's comment: "The
4472 background is that sometimes spamd either never reads data from a
4473 connection it has accepted, or it never writes response data. The exiscan
4474 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
4475 blindly assumes that writes won't block so it may never time out."
4476
4477 PH/39 Allow G after quota size as well as K and M.
4478
4479 PH/40 The value set for $authenticated_id in an authenticator may not contain
4480 binary zeroes or newlines because the value is written to log lines and
4481 to spool files. There was no check on this. Now the value is run through
4482 the string_printing() function so that such characters are converted to
4483 printable escape sequences.
4484
4485 PH/41 $message_linecount is a new variable that contains the total number of
4486 lines in the message. Compare $body_linecount, which is the count for the
4487 body only.
4488
4489 PH/42 Exim no longer gives details of delivery errors for specific addresses in
4490 bounce and delay warning messages, except in certain special cases, which
4491 are as follows:
4492
4493 (a) An SMTP error message from a remote host;
4494 (b) A message specified in a :fail: redirection;
4495 (c) A message specified in a "fail" command in a system filter;
4496 (d) A message specified in a FAIL return from the queryprogram router;
4497 (e) A message specified by the cannot_route_message router option.
4498
4499 In these cases only, Exim does include the error details in bounce and
4500 warning messages. There are also a few cases where bland messages such
4501 as "unrouteable address" or "local delivery error" are given.
4502
4503 PH/43 $value is now also set for the "else" part of a ${run expansion.
4504
4505 PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
4506 being worked on, but at least Exim now implements the latest version to
4507 play with."
4508
4509 PH/45 In a pipe transport, although a timeout while waiting for the pipe
4510 process to complete was treated as a delivery failure, a timeout while
4511 writing the message to the pipe was logged, but erroneously treated as a
4512 successful delivery. Such timeouts include transport filter timeouts. For
4513 consistency with the overall process timeout, these timeouts are now
4514 treated as errors, giving rise to delivery failures by default. However,
4515 there is now a new Boolean option for the pipe transport called
4516 timeout_defer, which, if set TRUE, converts the failures into defers for
4517 both kinds of timeout. A transport filter timeout is now identified in
4518 the log output.
4519
4520 PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
4521 systems where "make" and "gmake" are different, calling "gmake" at top
4522 level broke things. I've arranged for the value of $(MAKE) to be passed
4523 from the Makefile to this script so that it can call the same version of
4524 "make".
4525
4526
4527 A note about Exim versions 4.44 and 4.50
4528 ----------------------------------------
4529
4530 Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
4531 changes of various kinds. As a consequence, a big documentation update was
4532 needed. This delayed the release for rather longer than seemed good, especially
4533 in the light of a couple of (minor) security issues. Therefore, the changes
4534 that fixed bugs were backported into 4.43, to create a 4.44 maintenance
4535 release. So 4.44 and 4.50 are in effect two different branches that both start
4536 from 4.43.
4537
4538 I have left the 4.50 change log unchanged; it contains all the changes since
4539 4.43. The change log for 4.44 is below; many of its items are identical to
4540 those for 4.50. This seems to be the most sensible way to preserve the
4541 historical information.
4542
4543
4544 Exim version 4.50
4545 -----------------
4546
4547 1. Minor wording change to the doc/README.SIEVE file.
4548
4549 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
4550 computation of the current number of files was incorrect.
4551
4552 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
4553 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
4554 place.
4555
4556 4. Give more explanation in the error message when the command for a transport
4557 filter fails to execute.
4558
4559 5. There are several places where Exim runs a non-Exim command in a
4560 subprocess. The SIGUSR1 signal should be disabled for these processes. This
4561 was being done only for the command run by the queryprogram router. It is
4562 now done for all such subprocesses. The other cases are: ${run, transport
4563 filters, and the commands run by the lmtp and pipe transports.
4564
4565 6. Added CONFIGURE_GROUP build-time option.
4566
4567 7. Some older OS have a limit of 256 on the maximum number of file
4568 descriptors. Exim was using setrlimit() to set 1000 as a large value
4569 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
4570 systems. I've change it so that if it can't get 1000, it tries for 256.
4571
4572 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
4573 was an oversight, and furthermore, ever since the addition of extra
4574 controls (e.g. 4.43/32), the checks on when to allow different forms of
4575 "control" were broken. There should now be diagnostics for all cases when a
4576 control that does not make sense is encountered.
4577
4578 9. Added the /retain_sender option to "control=submission".
4579
4580 10. $recipients is now available in the predata ACL (oversight).
4581
4582 11. Tidy the search cache before the fork to do a delivery from a message
4583 received from the command line. Otherwise the child will trigger a lookup
4584 failure and thereby defer the delivery if it tries to use (for example) a
4585 cached ldap connection that the parent has called unbind on.
4586
4587 12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
4588 of $address_data from the recipient verification was clobbered by the
4589 sender verification.
4590
4591 13. The value of address_data from a sender verification is now available in
4592 $sender_address_data in subsequent conditions in the ACL statement.
4593
4594 14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
4595
4596 15. Added a new option "connect=<time>" to callout options, to set a different
4597 connection timeout.
4598
4599 16. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
4600 was its contents. (It was OK if the option was not defined at all.)
4601
4602 17. A "Completed" log line is now written for messages that are removed from
4603 the spool by the -Mrm option.
4604
4605 18. New variables $sender_verify_failure and $recipient_verify_failure contain
4606 information about exactly what failed.
4607
4608 19. Added -dd to debug only the daemon process.
4609
4610 20. Incorporated Michael Haardt's patch to ldap.c for improving the way it
4611 handles timeouts, both on the server side and network timeouts. Renamed the
4612 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
4613
4614 21. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
4615 It is now set to "smtps".
4616
4617 22. $host_address is now set to the target address during the checking of
4618 ignore_target_hosts.
4619
4620 23. When checking ignore_target_hosts for an ipliteral router, no host name was
4621 being passed; this would have caused $sender_host_name to have been used if
4622 matching the list had actually called for a host name (not very likely,
4623 since this list is usually IP addresses). A host name is now passed as
4624 "[x.x.x.x]".
4625
4626 24. Changed the calls that set up the SIGCHLD handler in the daemon to use the
4627 code that specifies a non-restarting handler (typically sigaction() in
4628 modern systems) in an attempt to fix a rare and obscure crash bug.
4629
4630 25. Narrowed the window for a race in the daemon that could cause it to ignore
4631 SIGCHLD signals. This is not a major problem, because they are used only to
4632 wake it up if nothing else does.
4633
4634 26. A malformed maildirsize file could cause Exim to calculate negative values
4635 for the mailbox size or file count. Odd effects could occur as a result.
4636 The maildirsize information is now recalculated if the size or filecount
4637 end up negative.
4638
4639 27. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
4640 support for a long time. Removed HAVE_SYS_VFS_H.
4641
4642 28. Installed the latest version of exipick from John Jetmore.
4643
4644 29. In an address list, if the pattern was not a regular expression, an empty
4645 subject address (from a bounce message) matched only if the pattern was an
4646 empty string. Non-empty patterns were not even tested. This was the wrong
4647 because it is perfectly reasonable to use an empty address as part of a
4648 database query. An empty address is now tested by patterns that are
4649 lookups. However, all the other forms of pattern expect the subject to
4650 contain a local part and a domain, and therefore, for them, an empty
4651 address still always fails if the pattern is not itself empty.
4652
4653 30. Exim went into a mad DNS loop when attempting to do a callout where the
4654 host was specified on an smtp transport, and looking it up yielded more
4655 than one IP address.
4656
4657 31. Re-factored the code for checking spool and log partition space into a
4658 function that finds that data and another that does the check. The former
4659 is then used to implement four new variables: $spool_space, $log_space,
4660 $spool_inodes, and $log_inodes.
4661
4662 32. The RFC2047 encoding function was originally intended for short strings
4663 such as real names; it was not keeping to the 75-character limit for
4664 encoded words that the RFC imposes. It now respects the limit, and
4665 generates multiple encoded words if necessary. To be on the safe side, I
4666 have increased the buffer size for the ${rfc2047: expansion operator from
4667 1024 to 2048 bytes.
4668
4669 33. It is now permitted to omit both strings after an "if" condition; if the
4670 condition is true, the result is "true". As before, when the second string
4671 is omitted, a false condition yields an empty string. This makes it less
4672 cumbersome to write custom ACL and router conditions.
4673
4674 34. Failure to deliver a bounce message always caused it to be frozen, even if
4675 there was an errors_to setting on the router. The errors_to setting is now
4676 respected.
4677
4678 35. If an IPv6 address is given for -bh or -bhc, it is now converted to the
4679 canonical form (fully expanded) before being placed in
4680 $sender_host_address.
4681
4682 36. The table in the code that translates DNS record types into text (T_A to
4683 "A" for instance) was missing entries for NS and CNAME. It is just possible
4684 that this could have caused confusion if both these types were looked up
4685 for the same domain, because the text type is used as part of Exim's
4686 per-process caching. But the chance of anyone hitting this buglet seems
4687 very small.
4688
4689 37. The dnsdb lookup has been extended in a number of ways.
4690
4691 (1) There is a new type, "zns", which walks up the domain tree until it
4692 finds some nameserver records. It should be used with care.
4693
4694 (2) There is a new type, "mxh", which is like "mx" except that it returns
4695 just the host names, not the priorities.
4696
4697 (3) It is now possible to give a list of domains (or IP addresses) to be
4698 looked up. The behaviour when one of the lookups defers can be
4699 controlled by a keyword.
4700
4701 (4) It is now possible to specify the separator character for use when
4702 multiple records are returned.
4703
4704 38. The dnslists ACL condition has been extended: it is now possible to supply
4705 a list of IP addresses and/or domains to be looked up in a particular DNS
4706 domain.
4707
4708 39. Added log_selector=+queue_time_overall.
4709
4710 40. When running the queue in the test harness, wait just a tad after forking a
4711 delivery process, to get repeatability of debugging output.
4712
4713 41. Include certificate and key file names in error message when GnuTLS fails
4714 to set them up, because the GnuTLS error message doesn't include the name
4715 of the failing file when there is a problem reading it.
4716
4717 42. Allow both -bf and -bF in the same test run.
4718
4719 43. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
4720
4721 44. The "Exiscan patch" is now merged into the mainline Exim source.
4722
4723 45. Sometimes the final signoff response after QUIT could fail to get
4724 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
4725 < 0 before doing a fflush(). This bug looks as though it goes back to the
4726 introduction of TLS in release 3.20, but "sometimes" must have been rare
4727 because the tests only now provoked it.
4728
4729 46. Reset the locale to "C" after calling embedded Perl, in case it was changed
4730 (this can affect the format of dates).
4731
4732 47. exim_tidydb, when checking for the continued existence of a message for
4733 which it has found a message-specific retry record, was not finding
4734 messages that were in split spool directories. Consequently, it was
4735 deleting retry records that should have stayed in existence.
4736
4737 48. Steve fixed some bugs in eximstats.
4738
4739 49. The SPA authentication driver was not abandoning authentication and moving
4740 on to the next authenticator when an expansion was forced to fail,
4741 contradicting the general specification for all authenticators. Instead it
4742 was generating a temporary error. It now behaves as specified.
4743
4744 50. The default ordering of permitted cipher suites for GnuTLS was pessimal
4745 (the order specifies the preference for clients). The order is now AES256,
4746 AES128, 3DES, ARCFOUR128.
4747
4748 51. Small patch to Sieve code - explicitly set From: when generating an
4749 autoreply.
4750
4751 52. Exim crashed if a remote delivery caused a very long error message to be
4752 recorded - for instance if somebody sent an entire SpamAssassin report back
4753 as a large number of 550 error lines. This bug was coincidentally fixed by
4754 increasing the size of one of Exim's internal buffers (big_buffer) that
4755 happened as part of the Exiscan merge. However, to be on the safe side, I
4756 have made the code more robust (and fixed the comments that describe what
4757 is going on).
4758
4759 53. Now that there can be additional text after "Completed" in log lines (if
4760 the queue_time_overall log selector is set), a one-byte patch to exigrep
4761 was needed to allow it to recognize "Completed" as not the last thing in
4762 the line.
4763
4764 54. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
4765 patch that reportedly fixes this has been added. I am not expert enough to
4766 create a test for it. This is what the patch creator wrote:
4767
4768 "I found a little strange behaviour of ldap code when working with
4769 Windows 2003 AD Domain, where users was placed in more than one
4770 Organization Units. When I tried to give exim partial DN, the exit code
4771 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
4772 But simultaneously result of request was absolutely normal ldap result,
4773 so I produce this patch..."
4774
4775 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
4776 REFERENCE, so I have modified the code to exclude the patch when that macro
4777 is not defined.
4778
4779 55. Some experimental protocols are using DNS PTR records for new purposes. The
4780 keys for these records are domain names, not reversed IP addresses. The
4781 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
4782 leaves it alone. Component reversal etc. now happens only for IP addresses.
4783 CAN-2005-0021
4784
4785 56. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
4786
4787 57. Double the size of the debug message buffer (to 2048) so that more of very
4788 long debug lines gets shown.
4789
4790 58. The exicyclog utility now does better if the number of log files to keep
4791 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
4792
4793 59. Two changes related to the smtp_active_hostname option:
4794
4795 (1) $smtp_active_hostname is now available as a variable.
4796 (2) The default for smtp_banner uses $smtp_active_hostname instead
4797 of $primary_hostname.
4798
4799 60. The host_aton() function is supposed to be passed a string that is known
4800 to be a valid IP address. However, in the case of IPv6 addresses, it was
4801 not checking this. This is a hostage to fortune. Exim now panics and dies
4802 if the condition is not met. A case was found where this could be provoked
4803 from a dnsdb PTR lookup with an IPv6 address that had more than 8
4804 components; fortuitously, this particular loophole had already been fixed
4805 by change 4.50/55 above.
4806
4807 If there are any other similar loopholes, the new check in host_aton()
4808 itself should stop them being exploited. The report I received stated that
4809 data on the command line could provoke the exploit when Exim was running as
4810 exim, but did not say which command line option was involved. All I could
4811 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
4812 running as the user.
4813 CAN-2005-0021
4814
4815 61. There was a buffer overflow vulnerability in the SPA authentication code
4816 (which came originally from the Samba project). I have added a test to the
4817 spa_base64_to_bits() function which I hope fixes it.
4818 CAN-2005-0022
4819
4820 62. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
4821 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
4822
4823 63. The daemon start-up calls getloadavg() while still root for those OS that
4824 need the first call to be done as root, but it missed one case: when
4825 deliver_queue_load_max is set with deliver_drop_privilege. This is
4826 necessary for the benefit of the queue runner, because there is no re-exec
4827 when deliver_drop_privilege is set.
4828
4829 64. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
4830 This has been fixed.
4831
4832 65. Caching of lookup data for "hosts =" ACL conditions, when a named host list
4833 was in use, was not putting the data itself into the right store pool;
4834 consequently, it could be overwritten for a subsequent message in the same
4835 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
4836 the caching.)
4837
4838 66. Added hosts_max_try_hardlimit to the smtp transport, default 50.
4839
4840 67. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
4841 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
4842 the function were treating the return as a boolean value, which happened to
4843 work because 0=false and not-0=true, but is not correct code.
4844
4845 68. The host_aton() function was not handling scoped IPv6 addresses (those
4846 with, for example, "%eth0" on the end) correctly.
4847
4848 69. Fixed some compiler warnings in acl.c for the bitmaps specified with
4849 negated items (that is, ~something) in unsigned ints. Some compilers
4850 apparently mutter when there is no cast.
4851
4852 70. If an address verification called from an ACL failed, and did not produce a
4853 user-specific message (i.e. there was only a "system" message), nothing was
4854 put in $acl_verify_message. In this situation, it now puts the system
4855 message there.
4856
4857 71. Change 4.23/11 added synchronization checking at the start of an SMTP
4858 session; change 4.31/43 added the unwanted input to the log line - except
4859 that it did not do this in the start of session case. It now does.
4860
4861 72. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
4862 This is wrong and can cause the other end to generate a synchronization
4863 error if it is another Exim or anything else that does the synchronization
4864 check. A QUIT command is no longer sent after a timeout.
4865
4866 73. $host_lookup_deferred has been added, to make it easier to detect DEFERs
4867 during host lookups.
4868
4869 74. The defer_ok option of callout verification was not working if it was used
4870 when verifying addresses in header lines, that is, for this case:
4871
4872 verify = header_sender/callout=defer_ok
4873
4874 75. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
4875 those file descriptors could be used for SMTP connections. If anything
4876 wrote to stderr (the example that came up was "warn" in embedded Perl), it
4877 could be sent to the SMTP client, causing chaos. The daemon now opens
4878 stdin, stdout, and stderr to /dev/null when it puts itself into the
4879 background.
4880
4881 76. Arrange for output from Perl's "warn" command to be written to Exim's main
4882 log by default. The user can override this with suitable Perl magic.
4883
4884 77. The use of log_message on a "discard" ACL verb, which is supposed to add to
4885 the log message when discard triggers, was not working for the DATA ACL or
4886 for the non-SMTP ACL.
4887
4888 78. Error message wording change in sieve.c.
4889
4890 79. If smtp_accept_max_per_host was set, the number of connections could be
4891 restricted to fewer than expected, because the daemon was trying to set up
4892 a new connection before checking whether the processes handling previous
4893 connections had finished. The check for completed processes is now done
4894 earlier. On busy systems, this bug wouldn't be noticed because something
4895 else would have woken the daemon, and it would have reaped the completed
4896 process earlier.
4897
4898 80. If a message was submitted locally by a user whose login name contained one
4899 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
4900 It caused a spool format error. I have fixed the spool reading code. A
4901 related problem was that the "from" clause in the Received: line became
4902 illegal because of the space(s). It is now covered by ${quote_local_part.
4903
4904 81. Included the latest eximstats from Steve (adds average sizes to HTML Top
4905 tables).
4906
4907 82. Updated OS/Makefile-AIX as per message from Mike Meredith.
4908
4909 83. Patch from Sieve maintainer to fix unterminated string problem in
4910 "vacation" handling.
4911
4912 84. Some minor changes to the Linux configuration files to help with other
4913 OS variants using glibc.
4914
4915 85. One more patch for Sieve to update vacation handling to latest spec.
4916
4917
4918 ----------------------------------------------------
4919 See the note above about the 4.44 and 4.50 releases.
4920 ----------------------------------------------------
4921
4922
4923 Exim version 4.44
4924 -----------------
4925
4926 1. Change 4.43/35 introduced a bug that caused file counts to be
4927 incorrectly computed when quota_filecount was set in an appendfile
4928 transport
4929
4930 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
4931 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
4932 place.
4933
4934 3. Give more explanation in the error message when the command for a transport
4935 filter fails to execute.
4936
4937 4. There are several places where Exim runs a non-Exim command in a
4938 subprocess. The SIGUSR1 signal should be disabled for these processes. This
4939 was being done only for the command run by the queryprogram router. It is
4940 now done for all such subprocesses. The other cases are: ${run, transport
4941 filters, and the commands run by the lmtp and pipe transports.
4942
4943 5. Some older OS have a limit of 256 on the maximum number of file
4944 descriptors. Exim was using setrlimit() to set 1000 as a large value
4945 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
4946 systems. I've change it so that if it can't get 1000, it tries for 256.
4947
4948 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
4949 was an oversight, and furthermore, ever since the addition of extra
4950 controls (e.g. 4.43/32), the checks on when to allow different forms of
4951 "control" were broken. There should now be diagnostics for all cases when a
4952 control that does not make sense is encountered.
4953
4954 7. $recipients is now available in the predata ACL (oversight).
4955
4956 8. Tidy the search cache before the fork to do a delivery from a message
4957 received from the command line. Otherwise the child will trigger a lookup
4958 failure and thereby defer the delivery if it tries to use (for example) a
4959 cached ldap connection that the parent has called unbind on.
4960
4961 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
4962 of $address_data from the recipient verification was clobbered by the
4963 sender verification.
4964
4965 10. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
4966 was its contents. (It was OK if the option was not defined at all.)
4967
4968 11. A "Completed" log line is now written for messages that are removed from
4969 the spool by the -Mrm option.
4970
4971 12. $host_address is now set to the target address during the checking of
4972 ignore_target_hosts.
4973
4974 13. When checking ignore_target_hosts for an ipliteral router, no host name was
4975 being passed; this would have caused $sender_host_name to have been used if
4976 matching the list had actually called for a host name (not very likely,
4977 since this list is usually IP addresses). A host name is now passed as
4978 "[x.x.x.x]".
4979
4980 14. Changed the calls that set up the SIGCHLD handler in the daemon to use the
4981 code that specifies a non-restarting handler (typically sigaction() in
4982 modern systems) in an attempt to fix a rare and obscure crash bug.
4983
4984 15. Narrowed the window for a race in the daemon that could cause it to ignore
4985 SIGCHLD signals. This is not a major problem, because they are used only to
4986 wake it up if nothing else does.
4987
4988 16. A malformed maildirsize file could cause Exim to calculate negative values
4989 for the mailbox size or file count. Odd effects could occur as a result.
4990 The maildirsize information is now recalculated if the size or filecount
4991 end up negative.
4992
4993 17. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
4994 support for a long time. Removed HAVE_SYS_VFS_H.
4995
4996 18. Updated exipick to current release from John Jetmore.
4997
4998 19. Allow an empty sender to be matched against a lookup in an address list.
4999 Previously the only cases considered were a regular expression, or an
5000 empty pattern.
5001
5002 20. Exim went into a mad DNS lookup loop when doing a callout where the
5003 host was specified on the transport, if the DNS lookup yielded more than
5004 one IP address.
5005
5006 21. The RFC2047 encoding function was originally intended for short strings
5007 such as real names; it was not keeping to the 75-character limit for
5008 encoded words that the RFC imposes. It now respects the limit, and
5009 generates multiple encoded words if necessary. To be on the safe side, I
5010 have increased the buffer size for the ${rfc2047: expansion operator from
5011 1024 to 2048 bytes.
5012
5013 22. Failure to deliver a bounce message always caused it to be frozen, even if
5014 there was an errors_to setting on the router. The errors_to setting is now
5015 respected.
5016
5017 23. If an IPv6 address is given for -bh or -bhc, it is now converted to the
5018 canonical form (fully expanded) before being placed in
5019 $sender_host_address.
5020
5021 24. Updated eximstats to version 1.33
5022
5023 25. Include certificate and key file names in error message when GnuTLS fails
5024 to set them up, because the GnuTLS error message doesn't include the name
5025 of the failing file when there is a problem reading it.
5026
5027 26. Expand error message when OpenSSL has problems setting up cert/key files.
5028 As per change 25.
5029
5030 27. Reset the locale to "C" after calling embedded Perl, in case it was changed
5031 (this can affect the format of dates).
5032
5033 28. exim_tidydb, when checking for the continued existence of a message for
5034 which it has found a message-specific retry record, was not finding
5035 messages that were in split spool directories. Consequently, it was