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.
11 JH/01 Rework error string handling in TLS interface so that the caller in
12 more cases is responsible for logging. This permits library-sourced
13 string to be attached to addresses during delivery, and collapses
14 pairs of long lines into single ones.
16 PP/01 Allow PKG_CONFIG_PATH to be set in Local/Makefile and use it correctly
17 during configuration. Wildcards are allowed and expanded.
19 JH/02 Rework error string handling in DKIM to pass more info back to callers.
20 This permits better logging.
22 JH/03 Rework the transport continued-connection mechanism: when TLS is active,
23 do not close it down and have the child transport start it up again on
24 the passed-on TCP connection. Instead, proxy the child (and any
25 subsequent ones) for TLS via a unix-domain socket channel. Logging is
26 affected: the continued delivery log lines do not have any DNSSEC, TLS
27 Certificate or OCSP information. TLS cipher information is still logged.
29 JH/04 Shorten the log line for daemon startup by collapsing adjacent sets of
30 identical IP addresses on different listening ports. Will also affect
33 PP/02 Bug 2070: uClibc defines __GLIBC__ without providing glibc headers;
34 add noisy ifdef guards to special-case this sillyness.
35 Patch from Bernd Kuhls.
37 JH/05 Tighten up the checking in isip4 (et al): dotted-quad components larger
38 than 255 are no longer allowed.
40 JH/06 Default openssl_options to include +no_ticket, to reduce load on peers.
41 Disable the session-cache too, which might reduce our load. Since we
42 currrectly use a new context for every connection, both as server and
43 client, there is no benefit for these.
44 GnuTLS appears to not support tickets server-side by default (we don't
45 call gnutls_session_ticket_enable_server()) but client side is enabled
46 by default on recent versions (3.1.3 +) unless the PFS priority string
49 PP/03 Add $SOURCE_DATE_EPOCH support for reproducible builds, per spec at
50 <https://reproducible-builds.org/specs/source-date-epoch/>.
52 JH/07 Fix smtp transport use of limited max_rcpt under mua_wrapper. Previously
53 the check for any unsuccessful recipients did not notice the limit, and
54 erroneously found still-pending ones.
56 JH/08 Pipeline CHUNKING command and data together, on kernels that support
57 MSG_MORE. Only in-clear (not on TLS connections).
59 JH/09 Avoid using a temporary file during transport using dkim. Unless a
60 transport-filter is involved we can buffer the headers in memory for
61 creating the signature, and read the spool data file once for the
62 signature and again for transmission.
64 JH/10 Enable use of sendfile in Linux builds as default. It was disabled in
65 4.77 as the kernel support then wasn't solid, having issues in 64bit
66 mode. Now, it's been long enough. Add support for FreeBSD also.
68 JH/11 Bug 2104: Fix continued use of a transport connection with TLS. In the
69 case where the routing stage had gathered several addresses to send to
70 a host before calling the transport for the first, we previously failed
71 to close down TLS in the old transport process before passing the TCP
72 connection to the new process. The new one sent a STARTTLS command
73 which naturally failed, giving a failed delivery and bloating the retry
74 database. Investigation and fix prototype from Wolfgang Breyha.
76 JH/12 Fix check on SMTP command input synchronisation. Previously there were
77 false-negatives in the check that the sender had not preempted a response
78 or prompt from Exim (running as a server), due to that code's lack of
79 awareness of the SMTP input buffering.
81 PP/04 Add commandline_checks_require_admin option.
82 Exim drops privileges sanely, various checks such as -be aren't a
83 security problem, as long as you trust local users with access to their
84 own account. When invoked by services which pass untrusted data to
85 Exim, this might be an issue. Set this option in main configuration
86 AND make fixes to the calling application, such as using `--` to stop
89 JH/13 Do pipelining under TLS. Previously, although safe, no advantage was
90 taken. Now take care to pack both (client) MAIL,RCPT,DATA, and (server)
91 responses to those, into a single TLS record each way (this usually means
92 a single packet). As a side issue, smtp_enforce_sync now works on TLS
95 PP/05 OpenSSL/1.1: use DH_bits() for more accurate DH param sizes. This
96 affects you only if you're dancing at the edge of the param size limits.
97 If you are, and this message makes sense to you, then: raise the
98 configured limit or use OpenSSL 1.1. Nothing we can do for older
101 JH/14 For the "sock" variant of the malware scanner interface, accept an empty
102 cmdline element to get the documented default one. Previously it was
105 JH/15 Fix a crash in the smtp transport caused when two hosts in succession
106 are unsuable for non-message-specific reasons - eg. connection timeout,
107 banner-time rejection.
109 JH/16 Fix logging of delivery remote port, when specified by router, under
112 PP/06 Repair manualroute's ability to take options in any order, even if one
113 is the name of a transport.
116 HS/01 Cleanup, prevent repeated use of -p/-oMr (CVE-2017-1000369)
118 JH/17 Change the list-building routines interface to use the expanding-string
119 triplet model, for better allocation and copying behaviour.
121 JH/18 Prebuild the data-structure for "builtin" macros, for faster startup.
122 Previously it was constructed the first time a possibly-matching string
123 was met in the configuration file input during startup; now it is done
126 JH/19 Bug 2141: Use the full-complex API for Berkeley DB rather than the legacy-
127 compatible one, to avoid the (poorly documented) possibility of a config
128 file in the working directory redirecting the DB files, possibly correpting
129 some existing file. CVE-2017-10140 assigned for BDB.
131 JH/20 Bug 2147: Do not defer for a verify-with-callout-and-random which is not
132 cache-hot. Previously, although the result was properly cached, the
133 initial verify call returned a defer.
135 JH/21 Bug 2151: Avoid using SIZE on the MAIL for a callout verify, on any but
136 the main verify for receipient in uncached-mode.
138 JH/22 Retire historical build files to an "unsupported" subdir. These are
139 defined as "ones for which we have no current evidence of testing".
141 JH/23 DKIM: enforce the DNS pubkey record "h" permitted-hashes optional field,
142 if present. Previously it was ignored.
144 JH/24 Start using specified-initialisers in C structure init coding. This is
145 a C99 feature (it's 2017, so now considered safe).
147 JH/25 Use one-bit bitfields for flags in the "addr" data structure. Previously
148 if was a fixed-sized field and bitmask ops via macros; it is now more
151 PP/07 GitHub PR 56: Apply MariaDB build fix.
152 Patch provided by Jaroslav Škarvada.
154 PP/08 Bug 2161: Fix regression in sieve quoted-printable handling introduced
155 during Coverity cleanups [4.87 JH/47]
156 Diagnosis and fix provided by Michael Fischer v. Mollard.
158 JH/26 Fix DKIM bug: when the pseudoheader generated for signing was exactly
159 the right size to place the terminating semicolon on its own folded
160 line, the header hash was calculated to an incorrect value thanks to
161 the (relaxed) space the fold became.
163 HS/02 Fix Bug 2130: large writes from the transport subprocess where chunked
164 and confused the parent.
166 JH/27 Fix SOCKS bug: an unitialized pointer was deref'd by the transport process
167 which could crash as a result. This could lead to undeliverable messages.
169 JH/28 Logging: "next input sent too soon" now shows where input was truncated
172 JH/29 Fix queue_run_in_order to ignore the PID portion of the message ID. This
173 matters on fast-turnover and PID-randomising systems, which were getting
174 out-of-order delivery.
176 JH/30 Fix a logging bug on aarch64: an unsafe routine was previously used for
177 a possibly-overlapping copy. The symptom was that "Remote host closed
178 connection in response to HELO" was logged instead of the actual 4xx
181 JH/31 Fix CHUNKING code to properly flush the unwanted chunk after an error.
182 Previously only that bufferd was discarded, resulting in SYMTP command
185 JH/32 DKIM: when a message has multiple signatures matching an identity given
186 in dkim_verify_signers, run the dkim acl once for each. Previously only
187 one run was done. Bug 2189.
189 JH/33 Downgrade an unfound-list name (usually a typo in the config file) from
190 "panic the current process" to "deliberately defer". The panic log is
191 still written with the problem list name; the mail and reject logs now
192 get a temp-reject line for the message that was being handled, saying
193 something like "domains check lookup or other defer". The SMTP 451
194 message is still "Temporary local problem".
196 JH/34 Bug 2199: Fix a use-after-free while reading smtp input for header lines.
197 A crafted sequence of BDAT commands could result in in-use memory beeing
198 freed. CVE-2017-16943.
200 HS/03 Bug 2201: Fix checking for leading-dot on a line during headers reading
201 from SMTP input. Previously it was always done; now only done for DATA
202 and not BDAT commands. CVE-2017-16944.
204 JH/35 Bug 2201: Flush received data in BDAT mode after detecting an error fatal
205 to the message (such as an overlong header line). Previously this was
206 not done and we did not exit BDAT mode. Followon from the previous item
207 though a different problem.
213 JH/01 Bug 1922: Support IDNA2008. This has slightly different conversion rules
214 than -2003 did; needs libidn2 in addition to libidn.
216 JH/02 The path option on a pipe transport is now expanded before use.
218 PP/01 GitHub PR 50: Do not call ldap_start_tls_s on ldapi:// connections.
219 Patch provided by "Björn", documentation fix added too.
221 JH/03 Bug 2003: fix Proxy Protocol v2 handling: the address size field was
222 missing a wire-to-host endian conversion.
224 JH/04 Bug 2004: fix CHUNKING in non-PIPELINEING mode. Chunk data following
225 close after a BDAT command line could be taken as a following command,
226 giving a synch failure. Fix by only checking for synch immediately
227 before acknowledging the chunk.
229 PP/02 GitHub PR 52: many spelling fixes, which include fixing parsing of
230 no_require_dnssec option and creation of _HAVE_TRANSPORT_APPEND_MAILDIR
231 macro. Patches provided by Josh Soref.
233 JH/05 Have the EHLO response advertise VRFY, if there is a vrfy ACL defined.
234 Previously we did not; the RFC seems ambiguous and VRFY is not listed
235 by IANA as a service extension. However, John Klensin suggests that we
238 JH/06 Bug 2017: Fix DKIM verification in -bh test mode. The data feed into
239 the dkim code may be unix-mode line endings rather than smtp wire-format
240 CRLF, so prepend a CR to any bare LF.
242 JH/07 Rationalise the coding for callout smtp conversations and transport ones.
243 As a side-benfit, callouts can now use PIPELINING hence fewer round-trips.
245 JH/08 Bug 2016: Fix DKIM verification vs. CHUNKING. Any BDAT commands after
246 the first were themselves being wrongly included in the feed into dkim
247 processing; with most chunk sizes in use this resulted in an incorrect
248 body hash calculated value.
250 JH/09 Bug 2014: permit inclusion of a DKIM-Signature header in a received
251 DKIM signature block, for verification. Although advised against by
252 standards it is specifically not ruled illegal.
254 JH/10 Bug 2025: Fix reception of (quoted) local-parts with embedded spaces.
256 JH/11 Bug 2029: Fix crash in DKIM verification when a message signature block is
257 missing a body hash (the bh= tag).
259 JH/12 Bug 2018: Re-order Proxy Protocol startup versus TLS-on-connect startup.
260 It seems that HAProxy sends the Proxy Protocol information in clear and
261 only then does a TLS startup, so do the same.
263 JH/13 Bug 2027: Avoid attempting to use TCP Fast Open for non-transport client
264 TCP connections (such as for Spamd) unless the daemon successfully set
265 Fast Open mode on its listening sockets. This fixes breakage seen on
266 too-old kernels or those not configured for Fast Open, at the cost of
267 requiring both directions being enabled for TFO, and TFO never being used
268 by non-daemon-related Exim processes.
270 JH/14 Bug 2000: Reject messages recieved with CHUNKING but with malformed line
271 endings, at least on the first header line. Try to canonify any that get
272 past that check, despite the cost.
274 JH/15 Angle-bracket nesting (an error inserted by broken sendmails) levels are
275 now limited to an arbitrary five deep, while parsing addresses with the
276 strip_excess_angle_brackets option enabled.
278 PP/03 Bug 2018: For Proxy Protocol and TLS-on-connect, do not over-read and
279 instead leave the unprompted TLS handshake in socket buffer for the
280 TLS library to consume.
282 PP/04 Bug 2018: Also handle Proxy Protocol v2 safely.
284 PP/05 FreeBSD compat: handle that Ports no longer create /usr/bin/perl
286 JH/16 Drop variables when they go out of scope. Memory management drops a whole
287 region in one operation, for speed, and this leaves assigned pointers
288 dangling. Add checks run only under the testsuite which checks all
289 variables at a store-reset and panics on a dangling pointer; add code
290 explicitly nulling out all the variables discovered. Fixes one known
291 bug: a transport crash, where a dangling pointer for $sending_ip_address
292 originally assigned in a verify callout, is re-used.
294 PP/06 Drop '.' from @INC in various Perl scripts.
296 PP/07 Switch FreeBSD iconv to always use the base-system libc functions.
298 PP/08 Reduce a number of compilation warnings under clang; building with
299 CC=clang CFLAGS+=-Wno-dangling-else -Wno-logical-op-parentheses
300 should be warning-free.
302 JH/17 Fix inbound CHUNKING when DKIM disabled at runtime.
304 HS/01 Fix portability problems introduced by PP/08 for platforms where
305 realloc(NULL) is not equivalent to malloc() [SunOS et al].
307 HS/02 Bug 1974: Fix missing line terminator on the last received BDAT
308 chunk. This allows us to accept broken chunked messages. We need a more
309 general solution here.
311 PP/09 Wrote util/chunking_fixqueue_finalnewlines.pl to help recover
312 already-broken messages in the queue.
314 JH/18 Bug 2061: Fix ${extract } corrupting an enclosing ${reduce } $value.
316 JH/19 Fix reference counting bug in routing-generated-address tracking.
322 JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination
323 supports it and a size is available (ie. the sending peer gave us one).
325 JH/02 The obsolete acl condition "demime" is removed (finally, after ten
326 years of being deprecated). The replacements are the ACLs
327 acl_smtp_mime and acl_not_smtp_mime.
329 JH/03 Upgrade security requirements imposed for hosts_try_dane: previously
330 a downgraded non-dane trust-anchor for the TLS connection (CA-style)
331 or even an in-clear connection were permitted. Now, if the host lookup
332 was dnssec and dane was requested then the host is only used if the
333 TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority
334 MXs) will be tried (for hosts_try_dane though not for hosts_require_dane)
335 if one fails this test.
336 This means that a poorly-configured remote DNS will make it incommunicado;
337 but it protects against a DNS-interception attack on it.
339 JH/04 Bug 1810: make continued-use of an open smtp transport connection
340 non-noisy when a race steals the message being considered.
342 JH/05 If main configuration option tls_certificate is unset, generate a
343 self-signed certificate for inbound TLS connections.
345 JH/06 Bug 165: hide more cases of password exposure - this time in expansions
346 in rewrites and routers.
348 JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80
349 and logged a warning sing 4.83; now they are a configuration file error.
351 JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name
352 (lacking @domain). Apply the same qualification processing as RCPT.
354 JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode.
356 JH/10 Support ${sha256:} applied to a string (as well as the previous
359 JH/11 Cutthrough: avoid using the callout hints db on a verify callout when
360 a cutthrough deliver is pending, as we always want to make a connection.
361 This also avoids re-routing the message when later placing the cutthrough
362 connection after a verify cache hit.
363 Do not update it with the verify result either.
365 JH/12 Cutthrough: disable when verify option success_on_redirect is used, and
366 when routing results in more than one destination address.
368 JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim
369 signing (which inhibits the cutthrough capability). Previously only
370 the presence of an option was tested; now an expansion evaluating as
371 empty is permissible (obviously it should depend only on data available
372 when the cutthrough connection is made).
374 JH/14 Fix logging of errors under PIPELINING. Previously the log line giving
375 the relevant preceding SMTP command did not note the pipelining mode.
377 JH/15 Fix counting of empty lines in $body_linecount and $message_linecount.
378 Previously they were not counted.
380 JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same
381 as one having no matching records. Previously we deferred the message
382 that needed the lookup.
384 JH/17 Fakereject: previously logged as a normal message arrival "<="; now
385 distinguished as "(=".
387 JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
388 for missing MX records. Previously it only worked for missing A records.
390 JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
392 JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
393 after the data-go-ahead and data-ack. Patch from Jason Betts.
395 JH/21 Bug 1846: Send DMARC forensic reports for reject and quarantine results,
396 even for a "none" policy. Patch from Tony Meyer.
398 JH/22 Fix continued use of a connection for further deliveries. If a port was
399 specified by a router, it must also match for the delivery to be
402 JH/23 Bug 1874: fix continued use of a connection for further deliveries.
403 When one of the recipients of a message was unsuitable for the connection
404 (has no matching addresses), we lost track of needing to mark it
405 deferred. As a result mail would be lost.
407 JH/24 Bug 1832: Log EHLO response on getting conn-close response for HELO.
409 JH/25 Decoding ACL controls is now done using a binary search; the source code
410 takes up less space and should be simpler to maintain. Merge the ACL
411 condition decode tables also, with similar effect.
413 JH/26 Fix problem with one_time used on a redirect router which returned the
414 parent address unchanged. A retry would see the parent address marked as
415 delivered, so not attempt the (identical) child. As a result mail would
418 JH/27 Fix a possible security hole, wherein a process operating with the Exim
419 UID can gain a root shell. Credit to http://www.halfdog.net/ for
420 discovery and writeup. Ubuntu bug 1580454; no bug raised against Exim
423 JH/28 Enable {spool,log} filesystem space and inode checks as default.
424 Main config options check_{log,spool}_{inodes,space} are now
425 100 inodes, 10MB unless set otherwise in the configuration.
427 JH/29 Fix the connection_reject log selector to apply to the connect ACL.
428 Previously it only applied to the main-section connection policy
431 JH/30 Bug 1897: fix callouts connection fallback from TLS to cleartext.
433 PP/01 Changed default Diffie-Hellman parameters to be Exim-specific, created
434 by me. Added RFC7919 DH primes as an alternative.
436 PP/02 Unbreak build via pkg-config with new hash support when crypto headers
437 are not in the system include path.
439 JH/31 Fix longstanding bug with aborted TLS server connection handling. Under
440 GnuTLS, when a session startup failed (eg because the client disconnected)
441 Exim did stdio operations after fclose. This was exposed by a recent
442 change which nulled out the file handle after the fclose.
444 JH/32 Bug 1909: Fix OCSP proof verification for cases where the proof is
445 signed directly by the cert-signing cert, rather than an intermediate
446 OCSP-signing cert. This is the model used by LetsEncrypt.
448 JH/33 Bug 1914: Ensure socket is nonblocking before draining after SMTP QUIT.
450 HS/01 Fix leak in verify callout under GnuTLS, about 3MB per recipient on
451 an incoming connection.
453 HS/02 Bug 1802: Do not half-close the connection after sending a request
456 HS/03 Use "auto" as the default EC curve parameter. For OpenSSL < 1.0.2
457 fallback to "prime256v1".
459 JH/34 SECURITY: Use proper copy of DATA command in error message.
460 Could leak key material. Remotely exploitable. CVE-2016-9963.
466 JH/01 Bug 1664: Disable OCSP for GnuTLS library versions at/before 3.3.16
467 and 3.4.4 - once the server is enabled to respond to an OCSP request
468 it does even when not requested, resulting in a stapling non-aware
469 client dropping the TLS connection.
471 TF/01 Code cleanup: Overhaul the debug_selector and log_selector machinery to
472 support variable-length bit vectors. No functional change.
474 TF/02 Improve the consistency of logging incoming and outgoing interfaces.
475 The I= interface field on outgoing lines is now after the H= remote
476 host field, same as incoming lines. There is a separate
477 outgoing_interface log selector which allows you to disable the
480 JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write.
481 If not running log_selector +smtp_connection the mainlog would be held
482 open indefinitely after a "too many connections" event, including to a
483 deleted file after a log rotate. Leave the per net connection logging
484 leaving it open for efficiency as that will be quickly detected by the
485 check on the next write.
487 HS/01 Bug 1671: Fix post transport crash.
488 Processing the wait-<transport> messages could crash the delivery
489 process if the message IDs didn't exist for some reason. When
490 using 'split_spool_directory=yes' the construction of the spool
491 file name failed already, exposing the same netto behaviour.
493 JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex &
494 mime_regex ACL conditions.
496 JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information
497 to DSN fail messages (bounces): remote IP, remote greeting, remote response
498 to HELO, local diagnostic string.
500 JH/05 Downgrade message for a TLS-certificate-based authentication fail from
501 log line to debug. Even when configured with a tls authenticator many
502 client connections are expected to not authenticate in this way, so
503 an authenticate fail is not an error.
505 HS/02 Add the Exim version string to the process info. This way exiwhat
506 gives some more detail about the running daemon.
508 JH/06 Bug 1395: time-limit caching of DNS lookups, to the TTL value. This may
509 matter for fast-change records such as DNSBLs.
511 JH/07 Bug 1678: Always record an interface option value, if set, as part of a
512 retry record, even if constant. There may be multiple transports with
513 different interface settings and the retry behaviour needs to be kept
516 JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments.
518 JH/09 Bug 1700: ignore space & tab embedded in base64 during decode.
520 JH/10 Bug 840: fix log_defer_output option of pipe transport
522 JH/11 Bug 830: use same host for all RCPTS of a message, even under
523 hosts_randomize. This matters a lot when combined with mua_wrapper.
525 JH/12 Bug 1706: percent and underbar characters are no longer escaped by the
526 ${quote_pgsql:<string>} operator.
528 JH/13 Bug 1708: avoid misaligned access in cached lookup.
530 JH/14 Change header file name for freeradius-client. Relevant if compiling
531 with Radius support; from the Gentoo tree and checked under Fedora.
533 JH/15 Bug 1712: Introduce $prdr_requested flag variable
535 JH/16 Bug 1714: Permit an empty string as expansion result for transport
536 option transport_filter, meaning no filtering.
538 JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts.
540 JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now
541 defaults to "*" (all hosts). The variable is now available when not built
542 with TLS, default unset, mainly to enable keeping the testsuite sane.
543 If a server certificate is not supplied (via tls_certificate) an error is
544 logged, and clients will find TLS connections fail on startup. Presumably
545 they will retry in-clear.
546 Packagers of Exim are strongly encouraged to create a server certificate
547 at installation time.
549 HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency
550 with the $config_file variable.
552 JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both
553 in transport context, after the attempt, and per-recipient. The latter type
554 is per host attempted. The event data is the error message, and the errno
555 information encodes the lookup type (A vs. MX) used for the (first) host,
556 and the trailing two digits of the smtp 4xx response.
558 GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
559 to write to mainlog (or rejectlog, paniclog) in the window between file
560 creation and permissions/ownership being changed. Particularly affects
561 installations where exicyclog is run as root, rather than exim user;
562 result is that the running daemon panics and dies.
564 JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
566 JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
567 selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
568 "pri" and "weight". Note that the previous implicit priority given by the
569 list order is no longer honoured.
571 JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalization
574 JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build
575 by defining SUPPORT_SOCKS.
577 JH/26 Move PROXY support from Experimental to mainline, enabled for a build
578 by defining SUPPORT_PROXY. Note that the proxy_required_hosts option
579 is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}.
580 variables are renamed to proxy_{local,external}_{address,port}.
582 JH/27 Move Internationalisation support from Experimental to mainline, enabled
583 for a build by defining SUPPORT_I18N
585 JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts
586 of the query string, and make ${quote_redis:} do that quoting.
588 JH/29 Move Events support from Experimental to mainline, enabled by default
589 and removable for a build by defining DISABLE_EVENT.
591 JH/30 Updated DANE implementation code to current from Viktor Dukhovni.
593 JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly
594 cached by the daemon.
596 JH/32 Move Redis support from Experimental to mainline, enabled for a build
597 by defining LOOKUP_REDIS. The libhiredis library is required.
599 JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit
600 keys are given for lookup.
602 JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM
603 support, by using OpenSSL or GnuTLS library ones. This means DKIM is
604 only supported when built with TLS support. The PolarSSL SHA routines
605 are still used when the TLS library is too old for convenient support.
607 JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option
608 openssl_options), for security. OpenSSL forces this from version 1.1.0
609 server-side so match that on older versions.
611 JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh
612 allocation for $value could be released as the expansion processing
613 concluded, but leaving the global pointer active for it.
615 JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response,
616 and to use the domains and local_parts ACL conditions.
618 JH/38 Fix cutthrough bug with body lines having a single dot. The dot was
619 incorrectly not doubled on cutthrough transmission, hence seen as a
620 body-termination at the receiving system - resulting in truncated mails.
621 Commonly the sender saw a TCP-level error, and retransmitted the message
622 via the normal store-and-forward channel. This could result in duplicates
623 received - but deduplicating mailstores were liable to retain only the
624 initial truncated version.
626 JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64.
628 JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS.
630 JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While
631 we're in there, support oversigning also; bug 1309.
633 JH/42 Bug 1796: Fix error logged on a malware scanner connection failure.
635 HS/04 Add support for keep_environment and add_environment options.
637 JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain;
638 either intentional arithmetic overflow during PRNG, or testing config-
641 JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
642 delivery resulted in actual delivery. Cancel cutthrough before DATA
645 JH/45 Fix cutthrough, when connection not opened by verify and target hard-
646 rejects a recipient: pass the reject to the originator.
648 JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs.
649 Many were false-positives and ignorable, but it's worth fixing the
652 JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also
653 for the new environment-manipulation done at startup. Move the routines
654 from being local to tls.c to being global via the os.c file.
656 JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing
657 an extract embedded as result-arg for a map, the first arg for extract
658 is unavailable so we cannot tell if this is a numbered or keyed
659 extraction. Accept either.
665 JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
668 JH/02 The smtp transport option "multi_domain" is now expanded.
670 JH/03 The smtp transport now requests PRDR by default, if the server offers
673 JH/04 Certificate name checking on server certificates, when exim is a client,
674 is now done by default. The transport option tls_verify_cert_hostnames
675 can be used to disable this per-host. The build option
676 EXPERIMENTAL_CERTNAMES is withdrawn.
678 JH/05 The value of the tls_verify_certificates smtp transport and main options
679 default to the word "system" to access the system default CA bundle.
680 For GnuTLS, only version 3.0.20 or later.
682 JH/06 Verification of the server certificate for a TLS connection is now tried
683 (but not required) by default. The verification status is now logged by
684 default, for both outbound TLS and client-certificate supplying inbound
687 JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
690 JH/08 The EXPERIMENTAL_DSN compile option is no longer needed; all Delivery
691 Status Notification (bounce) messages are now MIME format per RFC 3464.
692 Support for RFC 3461 DSN options NOTIFY,ENVID,RET,ORCPT can be advertised
693 under the control of the dsn_advertise_hosts option, and routers may
694 have a dsn_lasthop option.
696 JH/09 A timeout of 2 minutes is now applied to all malware scanner types by
697 default, modifiable by a malware= option. The list separator for
698 the options can now be changed in the usual way. Bug 68.
700 JH/10 The smtp_receive_timeout main option is now expanded before use.
702 JH/11 The incoming_interface log option now also enables logging of the
703 local interface on delivery outgoing connections.
705 JH/12 The cutthrough-routing facility now supports multi-recipient mails,
706 if the interface and destination host and port all match.
708 JH/13 Bug 344: The verify = reverse_host_lookup ACL condition now accepts a
711 JH/14 Bug 1573: The spam= ACL condition now additionally supports Rspamd.
712 Patch from Andrew Lewis.
714 JH/15 Bug 670: The spamd_address main option (for the spam= ACL condition)
715 now supports optional time-restrictions, weighting, and priority
716 modifiers per server. Patch originally by <rommer@active.by>.
718 JH/16 The spamd_address main option now supports a mixed list of local
719 and remote servers. Remote servers can be IPv6 addresses, and
720 specify a port-range.
722 JH/17 Bug 68: The spamd_address main option now supports an optional
723 timeout value per server.
725 JH/18 Bug 1581: Router and transport options headers_add/remove can
726 now have the list separator specified.
728 JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry
731 JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails
734 JH/21 Support for the A6 type of dns record is withdrawn.
736 JH/22 Bug 608: The result of a QUIT or not-QUIT toplevel ACL now matters
737 rather than the verbs used.
739 JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size
740 from 255 to 1024 chars.
742 JH/24 Verification callouts now attempt to use TLS by default.
744 HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains)
745 are generic router options now. The defaults didn't change.
747 JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames.
748 Original patch from Alexander Shikoff, worked over by JH.
750 HS/02 Bug 1575: exigrep falls back to autodetection of compressed
751 files if ZCAT_COMMAND is not executable.
753 JH/26 Bug 1539: Add timeout/retry options on dnsdb lookups.
755 JH/27 Bug 286: Support SOA lookup in dnsdb lookups.
757 JH/28 Bug 1588: Do not use the A lookup following an AAAA for setting the FQDN.
758 Normally benign, it bites when the pair was led to by a CNAME;
759 modern usage is to not canonicalize the domain to a CNAME target
760 (and we were inconsistent anyway for A-only vs AAAA+A).
762 JH/29 Bug 1632: Removed the word "rejected" from line logged for ACL discards.
764 JH/30 Check the forward DNS lookup for DNSSEC, in addition to the reverse,
765 when evaluating $sender_host_dnssec.
767 JH/31 Check the HELO verification lookup for DNSSEC, adding new
768 $sender_helo_dnssec variable.
770 JH/32 Bug 1397: Enable ECDHE on OpenSSL, just the NIST P-256 curve.
772 JH/33 Bug 1346: Note MAIL cmd seen in -bS batch, to avoid smtp_no_mail log.
774 JH/34 Bug 1648: Fix a memory leak seen with "mailq" and large queues.
776 JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was
777 documented as working, but never had. Support all but $spam_report.
779 JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command
780 added for tls authenticator.
782 HS/03 Add perl_taintmode main config option
788 TL/01 When running the test suite, the README says that variables such as
789 no_msglog_check are global and can be placed anywhere in a specific
790 test's script, however it was observed that placement needed to be near
791 the beginning for it to behave that way. Changed the runtest perl
792 script to read through the entire script once to detect and set these
793 variables, reset to the beginning of the script, and then run through
794 the script parsing/test process like normal.
796 TL/02 The BSD's have an arc4random API. One of the functions to induce
797 adding randomness was arc4random_stir(), but it has been removed in
798 OpenBSD 5.5. Detect this OpenBSD version and skip calling this
799 function when detected.
801 JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
802 cause callback expansion.
804 TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
805 syntax errors in an expansion can be treated as a string instead of
806 logging or causing an error, due to the internal use of bool_lax
807 instead of bool when processing it.
809 JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
810 server certificates when making smtp deliveries.
812 JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
814 JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
816 TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
818 TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
819 Merged patch from Sebastian Wiedenroth.
821 JH/05 Fix results-pipe from transport process. Several recipients, combined
822 with certificate use, exposed issues where response data items split
823 over buffer boundaries were not parsed properly. This eventually
824 resulted in duplicates being sent. This issue only became common enough
825 to notice due to the introduction of connection certificate information,
826 the item size being so much larger. Found and fixed by Wolfgang Breyha.
828 JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
829 size buffer was used, resulting in syntax errors when an expansion
832 JH/07 Add support for directories of certificates when compiled with a GnuTLS
833 version 3.3.6 or later.
835 JH/08 Rename the TPDA experimental facility to Event Actions. The #ifdef
836 is EXPERIMENTAL_EVENT, the main-configuration and transport options
837 both become "event_action", the variables become $event_name, $event_data
838 and $event_defer_errno. There is a new variable $verify_mode, usable in
839 routers, transports and related events. The tls:cert event is now also
840 raised for inbound connections, if the main configuration event_action
843 TL/06 In test suite, disable OCSP for old versions of openssl which contained
844 early OCSP support, but no stapling (appears to be less than 1.0.0).
846 JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
847 server certificate names available under the smtp transport option
848 "tls_verify_cert_hostname" now do not permit multi-component wildcard
851 JH/10 Time-related extraction expansions from certificates now use the main
852 option "timezone" setting for output formatting, and are consistent
853 between OpenSSL and GnuTLS compilations. Bug 1541.
855 JH/11 Fix a crash in mime ACL when meeting a zero-length, quoted or RFC2047-
856 encoded parameter in the incoming message. Bug 1558.
858 JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
859 include certificate info, eximon was claiming there were spoolfile
862 JH/13 Bug 1521: Fix ldap lookup for single-attr request, multiple-attr return.
864 JH/14 Log delivery-related information more consistently, using the sequence
865 "H=<name> [<ip>]" wherever possible.
867 TL/07 Bug 1547: Omit RFCs from release. Draft and RFCs have licenses which
868 are problematic for Debian distribution, omit them from the release
871 JH/15 Updates and fixes to the EXPERIMENTAL_DSN feature.
873 JH/16 Fix string representation of time values on 64bit time_t architectures.
876 JH/17 Fix a null-indirection in certextract expansions when a nondefault
877 output list separator was used.
882 TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
883 checkers that were complaining about end of non-void function with no
886 JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
887 This was a regression introduced in 4.83 by another bugfix.
889 JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
891 TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
892 EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
898 TF/01 Correctly close the server side of TLS when forking for delivery.
900 When a message was received over SMTP with TLS, Exim failed to clear up
901 the incoming connection properly after forking off the child process to
902 deliver the message. In some situations the subsequent outgoing
903 delivery connection happened to have the same fd number as the incoming
904 connection previously had. Exim would try to use TLS and fail, logging
905 a "Bad file descriptor" error.
907 TF/02 Portability fix for building lookup modules on Solaris when the xpg4
908 utilities have not been installed.
910 JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
911 temporary space as the ACL may create new global variables.
913 TL/01 LDAP support uses per connection or global context settings, depending
914 upon the detected version of the libraries at build time.
916 TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
917 to extract and use the src ip:port in logging and expansions as if it
918 were a direct connection from the outside internet. PPv2 support was
919 updated based on HAProxy spec change in May 2014.
921 JH/02 Add ${listextract {number}{list}{success}{fail}}.
923 TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
924 Properly escape header and check for NULL return.
926 PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
929 JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
931 TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
932 characters in header names, implemented as a verify condition.
933 Contributed by Michael Fischer v. Mollard.
935 TL/05 Rename SPF condition results err_perm and err_temp to standardized
936 results permerror and temperror. Previous values are deprecated but
937 still accepted. In a future release, err_perm and err_temp will be
938 completely removed, which will be a backward incompatibility if the
939 ACL tests for either of these two old results. Patch contributed by
940 user bes-internal on the mailing list.
942 JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
944 JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
945 selectors, in both main and reject logs.
947 JH/06 Log outbound-TLS and port details, subject to log selectors, for a
950 JH/07 Add malware type "sock" for talking to simple daemon.
952 JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
954 JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
955 routers/transports under cutthrough routing.
957 JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
958 numbers. Touch up "bool" conditional to keep the same definition.
960 TL/06 Remove duplicated language in spec file from 4.82 TL/16.
962 JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
964 JH/12 Expand items in router/transport headers_add or headers_remove lists
965 individually rather than the list as a whole. Bug 1452.
967 Required for reasonable handling of multiple headers_ options when
968 they may be empty; requires that headers_remove items with embedded
969 colons must have them doubled (or the list-separator changed).
971 TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
972 view the policy declared in the DMARC record. Currently, $dmarc_status
973 is a combined value of both the record presence and the result of the
976 JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
978 JH/14 New options dnssec_request_domains, dnssec_require_domains on the
979 dnslookup router and the smtp transport (applying to the forward
982 TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
983 of ldap servers used for a specific lookup. Patch provided by Heiko
986 JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
987 New variable $lookup_dnssec_authenticated for observability.
989 TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
990 Patch submitted by Lars Timman.
992 JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
994 TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
995 Requires trusted mode and valid format message id, aborts otherwise.
996 Patch contributed by Heiko Schlichting.
998 JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
999 certextract with support for various fields. Bug 1358.
1001 JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
1002 is requested by default, modifiable by smtp transport option
1005 JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
1006 operate on certificate variables to give certificate fingerprints
1007 Also new ${sha256:cert_variable}.
1009 JH/23 The PRDR feature is moved from being Experimental into the mainline.
1011 TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
1012 Christian Aistleitner.
1014 JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
1016 TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
1017 file. Patch from Wolfgang Breyha.
1019 JH/25 Expand the coverage of the delivery $host and $host_address to
1020 client authenticators run in verify callout. Bug 1476.
1022 JH/26 Port service names are now accepted for tls_on_connect_ports, to
1023 align with daemon_smtp_ports. Bug 72.
1025 TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
1026 support and error reporting did not work properly.
1028 TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
1029 and is readable. Patch from Andrew Colin Kissa.
1031 TL/14 Enhance documentation of ${run expansion and how it parses the
1032 commandline after expansion, particularly in the case when an
1033 unquoted variable expansion results in an empty value.
1035 JH/27 The TLS SNI feature was broken in 4.82. Fix it.
1037 PP/02 Fix internal collision of T_APL on systems which support RFC3123
1038 by renaming away from it. Addresses GH issue 15, reported by
1041 JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
1043 TL/15 SECURITY: prevent double expansion in math comparison functions
1044 (can expand unsanitized data). Not remotely exploitable.
1051 PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
1053 PP/02 Make -n do something, by making it not do something.
1054 When combined with -bP, the name of an option is not output.
1056 PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
1059 PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
1060 $sender_host_name and config options to manage this, and basic check
1063 PP/05 DSCP support for outbound connections and control modifier for inbound.
1065 PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
1066 (Only plugin which currently uses this is kerberos4, which nobody should
1067 be using, but we should make it available and other future plugins might
1068 conceivably use it, even though it would break NAT; stuff *should* be
1069 using channel bindings instead).
1071 PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
1072 name; added for Sendmail compatibility; requires admin caller.
1073 Handle -G as equivalent to "control = suppress_local_fixups" (we used to
1074 just ignore it); requires trusted caller.
1075 Also parse but ignore: -Ac -Am -X<logfile>
1078 TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
1080 TL/02 Add +smtp_confirmation as a default logging option.
1082 TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
1083 Patch by Magnus Holmgren from 2007-02-20.
1085 TL/04 Bugzilla 1281 - Spec typo.
1086 Bugzilla 1283 - Spec typo.
1087 Bugzilla 1290 - Spec grammar fixes.
1089 TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
1091 TL/06 Add Experimental DMARC support using libopendmarc libraries.
1093 TL/07 Fix an out of order global option causing a segfault. Reported to dev
1094 mailing list by by Dmitry Isaikin.
1096 JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
1098 JH/02 Support "G" suffix to numbers in ${if comparisons.
1100 PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
1102 NM/01 Bugzilla 1197 - Spec typo
1103 Bugzilla 1196 - Spec examples corrections
1105 JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
1107 PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
1108 gnutls_enable_pkcs11, but renamed to more accurately indicate its
1111 PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
1112 Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
1114 JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
1115 "acl {{name}{arg}...}", and optional args on acl condition
1118 JH/05 Permit multiple router/transport headers_add/remove lines.
1120 JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
1122 JH/07 Avoid using a waiting database for a single-message-only transport.
1123 Performance patch from Paul Fisher. Bugzilla 1262.
1125 JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
1128 JH/09 Add $headers_added variable, with content from use of ACL modifier
1129 add_header (but not yet added to the message). Bugzilla 199.
1131 JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
1132 Pulled from Bugzilla 817 by Wolfgang Breyha.
1134 PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
1136 (nb: this is the same fix as in Exim 4.80.1)
1138 JH/11 Add A= logging on delivery lines, and a client_set_id option on
1141 JH/12 Add optional authenticated_sender logging to A= and a log_selector
1144 PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
1146 PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
1147 advertise SMTP AUTH mechanism to us, instead of a generic
1148 protocol violation error. Also, make Exim more robust to bad
1149 data from the Dovecot auth socket.
1151 TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
1153 When a queue runner is handling a message, Exim first routes the
1154 recipient addresses, during which it prunes them based on the retry
1155 hints database. After that it attempts to deliver the message to
1156 any remaining recipients. It then updates the hints database using
1159 So if a recipient address works intermittently, it can get repeatedly
1160 deferred at routing time. The retry hints record remains fresh so the
1161 address never reaches the final cutoff time.
1163 This is a fairly common occurrence when a user is bumping up against
1164 their storage quota. Exim had some logic in its local delivery code
1165 to deal with this. However it did not apply to per-recipient defers
1166 in remote deliveries, e.g. over LMTP to a separate IMAP message store.
1168 This change adds a proper retry rule check during routing so that the
1169 final cutoff time is checked against the message's age. We only do
1170 this check if there is an address retry record and there is not a
1171 domain retry record; this implies that previous attempts to handle
1172 the address had the retry_use_local_parts option turned on. We use
1173 this as an approximation for the destination being like a local
1174 delivery, as in LMTP.
1176 I suspect this new check makes the old local delivery cutoff check
1177 redundant, but I have not verified this so I left the code in place.
1179 TF/02 Correct gecos expansion when From: is a prefix of the username.
1181 Test 0254 submits a message to Exim with the header
1185 When I ran the test suite under the user fanf2, Exim expanded
1186 the header to contain my full name, whereas it should have added
1187 a Resent-Sender: header. It erroneously treats any prefix of the
1188 username as equal to the username.
1190 This change corrects that bug.
1192 GF/01 DCC debug and logging tidyup
1193 Error conditions log to paniclog rather than rejectlog.
1194 Debug lines prefixed by "DCC: " to remove any ambiguity.
1196 TF/03 Avoid unnecessary rebuilds of lookup-related code.
1198 PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
1199 Bug spotted by Jeremy Harris; was flawed since initial commit.
1200 Would have resulted in OCSP responses post-SNI triggering an Exim
1201 NULL dereference and crash.
1203 JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
1205 PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
1206 Bug detection, analysis and fix by Samuel Thibault.
1207 Bugzilla 1331, Debian bug #698092.
1209 SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
1211 JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
1212 Server implementation by Todd Lyons, client by JH.
1213 Only enabled when compiled with EXPERIMENTAL_PRDR. A new
1214 config variable "prdr_enable" controls whether the server
1215 advertises the facility. If the client requests PRDR a new
1216 acl_data_smtp_prdr ACL is called once for each recipient, after
1217 the body content is received and before the acl_smtp_data ACL.
1218 The client is controlled by both of: a hosts_try_prdr option
1219 on the smtp transport, and the server advertisement.
1220 Default client logging of deliveries and rejections involving
1221 PRDR are flagged with the string "PRDR".
1223 PP/16 Fix problems caused by timeouts during quit ACLs trying to double
1224 fclose(). Diagnosis by Todd Lyons.
1226 PP/17 Update configure.default to handle IPv6 localhost better.
1227 Patch by Alain Williams (plus minor tweaks).
1230 PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
1231 This is now consistent with GnuTLS, and is now documented: the
1232 previous undocumented portable approach to treating the option as
1233 unset was to force an expansion failure. That still works, and
1234 an empty string is now equivalent.
1236 PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
1237 clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
1238 not performing validation itself.
1240 PP/20 Added force_command boolean option to pipe transport.
1241 Patch from Nick Koston, of cPanel Inc.
1243 JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
1246 TF/04 Added udpsend ACL modifier and hexquote expansion operator
1248 PP/21 Fix eximon continuous updating with timestamped log-files.
1249 Broken in a format-string cleanup in 4.80, missed when I repaired the
1250 other false fix of the same issue.
1251 Report and fix from Heiko Schlichting.
1254 PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
1255 Report from Prashanth Katuri.
1257 PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
1258 It's SecureTransport, so affects any MacOS clients which use the
1259 system-integrated TLS libraries, including email clients.
1261 PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
1262 using a MIME ACL for non-SMTP local injection.
1263 Report and assistance in diagnosis by Warren Baker.
1265 TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
1267 JH/16 Fix comparisons for 64b. Bugzilla 1385.
1269 TL/09 Add expansion variable $authenticated_fail_id to keep track of
1270 last id that failed so it may be referenced in subsequent ACL's.
1272 TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
1275 TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
1276 ldap library initialization, allowing self-signed CA's to be
1277 used. Also properly sets require_cert option later in code by
1278 using NULL (global ldap config) instead of ldap handle (per
1279 session). Bug diagnosis and testing by alxgomz.
1281 TL/12 Enhanced documentation in the ratelimit.pl script provided in
1282 the src/util/ subdirectory.
1284 TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
1285 renamed to Transport Post Delivery Action by Jeremy Harris, as
1288 TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
1289 when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
1290 redis_servers = needs to be configured which will be used by the redis
1291 lookup. Patch from Warren Baker, of The Packet Hub.
1293 TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
1295 TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
1296 hostname or reverse DNS when processing a host list. Used suggestions
1297 from multiple comments on this bug.
1299 TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
1301 TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
1302 Missed a few lines, added it to make the runtest require no keyboard
1305 TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
1306 contains upper case chars. Make router use caseful_local_part.
1308 TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
1309 support when GnuTLS has been built with p11-kit.
1315 PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
1317 This, or similar/improved, will also be change PP/11 of 4.82.
1323 PP/01 Handle short writes when writing local log-files.
1324 In practice, only affects FreeBSD (8 onwards).
1325 Bugzilla 1053, with thanks to Dmitry Isaikin.
1327 NM/01 Bugzilla 949 - Documentation tweak
1329 NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
1332 NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
1334 PP/02 Implemented gsasl authenticator.
1336 PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
1338 PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
1339 `pkg-config foo` for cflags/libs.
1341 PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
1342 with rest of GSASL and with heimdal_gssapi.
1344 PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
1345 `pkg-config foo` for cflags/libs for the TLS implementation.
1347 PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
1348 properties get this fed in as external SSF. A number of robustness
1349 and debugging improvements to the cyrus_sasl authenticator.
1351 PP/08 cyrus_sasl server now expands the server_realm option.
1353 PP/09 Bugzilla 1214 - Log authentication information in reject log.
1354 Patch by Jeremy Harris.
1356 PP/10 Added dbmjz lookup type.
1358 PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
1360 PP/12 MAIL args handles TAB as well as SP, for better interop with
1361 non-compliant senders.
1362 Analysis and variant patch by Todd Lyons.
1364 NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
1365 Bug report from Lars Müller <lars@samba.org> (via SUSE),
1366 Patch from Dirk Mueller <dmueller@suse.com>
1368 PP/13 tls_peerdn now print-escaped for spool files.
1369 Observed some $tls_peerdn in wild which contained \n, which resulted
1370 in spool file corruption.
1372 PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
1373 values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
1374 or write after TLS renegotiation, which otherwise led to messages
1377 TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
1378 as a tracking header (ie: a signed header comes before the signature).
1379 Patch from Wolfgang Breyha.
1381 JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
1382 comma-sep list; embedded commas doubled.
1384 JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
1386 PP/15 LDAP: Check for errors of TLS initialisation, to give correct
1388 Report and patch from Dmitry Banschikov.
1390 PP/16 Removed "dont_insert_empty_fragments" from "openssl_options".
1391 Removed SSL_clear() after SSL_new() which led to protocol negotiation
1392 failures. We appear to now support TLS1.1+ with Exim.
1394 PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
1395 lets Exim select keys and certificates based upon TLS SNI from client.
1396 Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
1397 before an outbound SMTP session. New log_selector, +tls_sni.
1399 PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
1400 NULL dereference. Report and patch from Alun Jones.
1402 PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
1403 on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
1404 Not seeing resolver debug output on NetBSD, but suspect this is a
1405 resolver implementation change.
1407 PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
1408 Left warnings. Added "eximon gdb" invocation mode.
1410 PP/21 Defaulting "accept_8bitmime" to true, not false.
1412 PP/22 Added -bw for inetd wait mode support.
1414 PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
1415 locate the relevant includes and libraries. Made this the default.
1417 PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
1418 Bugzilla 1246, report and most of solution from Tomasz Kusy.
1420 JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
1421 This may cause build issues on older platforms.
1423 PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
1424 gnutls_priority_init, ignoring Exim options gnutls_require_kx,
1425 gnutls_require_mac & gnutls_require_protocols (no longer supported).
1426 Added SNI support via GnuTLS too.
1427 Made ${randint:..} supplier available, if using not-too-old GnuTLS.
1429 PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
1431 PP/27 Applied dnsdb SPF support patch from Janne Snabb.
1432 Applied second patch from Janne, implementing suggestion to default
1433 multiple-strings-in-record handling to match SPF spec.
1435 JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
1437 PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
1438 read-only, out of scope).
1439 Patch from Wolfgang Breyha, report from Stuart Northfield.
1441 PP/29 Fix three issues highlighted by clang analyser static analysis.
1442 Only crash-plausible issue would require the Cambridge-specific
1443 iplookup router and a misconfiguration.
1444 Report from Marcin Mirosław.
1446 PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
1448 PP/31 %D in printf continues to cause issues (-Wformat=security), so for
1449 now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
1450 As part of this, removing so much warning spew let me fix some minor
1451 real issues in debug logging.
1453 PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
1454 assignment on my part. Fixed.
1456 PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
1457 of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
1458 Janne Snabb (who went above and beyond: thank you).
1460 PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
1461 string otherwise requires a connection and a bunch more work and it's
1462 relatively easy to get wrong. Should also expose TLS library linkage
1465 PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
1466 64-bit ${eval} (JH/03).
1468 PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
1469 GNU libc to support some of the 64-bit stuff, should not lead to
1470 conflicts. Defined before os.h is pulled in, so if a given platform
1471 needs to override this, it can.
1473 PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
1474 protection layer was required, which is not implemented.
1475 Bugzilla 1254, patch from Wolfgang Breyha.
1477 PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
1478 into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
1479 tls_dhparam take prime identifiers. Also unbreak combination of
1480 OpenSSL+DH_params+TLSSNI.
1482 PP/39 Disable SSLv2 by default in OpenSSL support.
1488 PP/01 Solaris build fix for Oracle's LDAP libraries.
1489 Bugzilla 1109, patch from Stephen Usher.
1491 TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
1493 TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
1496 TF/02 Fix a couple more cases where we did not log the error message
1497 when unlink() failed. See also change 4.74-TF/03.
1499 TF/03 Make the exiwhat support code safe for signals. Previously Exim might
1500 lock up or crash if it happened to be inside a call to libc when it
1501 got a SIGUSR1 from exiwhat.
1503 The SIGUSR1 handler appends the current process status to the process
1504 log which is later printed by exiwhat. It used to use the general
1505 purpose logging code to do this, but several functions it calls are
1506 not safe for signals.
1508 The new output code in the SIGUSR1 handler is specific to the process
1509 log, and simple enough that it's easy to inspect for signal safety.
1510 Removing some special cases also simplifies the general logging code.
1511 Removing the spurious timestamps from the process log simplifies
1514 TF/04 Improved ratelimit ACL condition.
1516 The /noupdate option has been deprecated in favour of /readonly which
1517 has clearer semantics. The /leaky, /strict, and /readonly update modes
1518 are mutually exclusive. The update mode is no longer included in the
1519 database key; it just determines when the database is updated. (This
1520 means that when you upgrade Exim will forget old rate measurements.)
1522 Exim now checks that the per_* options are used with an update mode that
1523 makes sense for the current ACL. For example, when Exim is processing a
1524 message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
1525 per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
1526 must specify per_mail/readonly. If you omit the update mode it defaults to
1527 /leaky where that makes sense (as before) or /readonly where required.
1529 The /noupdate option is now undocumented but still supported for
1530 backwards compatibility. It is equivalent to /readonly except that in
1531 ACLs where /readonly is required you may specify /leaky/noupdate or
1532 /strict/noupdate which are treated the same as /readonly.
1534 A useful new feature is the /count= option. This is a generalization
1535 of the per_byte option, so that you can measure the throughput of other
1536 aggregate values. For example, the per_byte option is now equivalent
1537 to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
1539 The per_rcpt option has been generalized using the /count= mechanism
1540 (though it's more complicated than the per_byte equivalence). When it is
1541 used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
1542 measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
1543 or in a non-SMTP ACL it adds all the recipients in one go. (The latter
1544 /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
1545 Note that using per_rcpt with a non-readonly update mode in more than
1546 one ACL will cause the recipients to be double-counted. (The per_mail
1547 and per_byte options don't have this problem.)
1549 The handling of very low rates has changed slightly. If the computed rate
1550 is less than the event's count (usually one) then this event is the first
1551 after a long gap. In this case the rate is set to the same as this event's
1552 count, so that the first message of a spam run is counted properly.
1554 The major new feature is a mechanism for counting the rate of unique
1555 events. The new per_addr option counts the number of different
1556 recipients that someone has sent messages to in the last time period. It
1557 behaves like per_rcpt if all the recipient addresses are different, but
1558 duplicate recipient addresses do not increase the measured rate. Like
1559 the /count= option this is a general mechanism, so the per_addr option
1560 is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
1561 example, measure the rate that a client uses different sender addresses
1562 with the options per_mail/unique=$sender_address. There are further
1563 details in the main documentation.
1565 TF/05 Removed obsolete $Cambridge$ CVS revision strings.
1567 TF/06 Removed a few PCRE remnants.
1569 TF/07 Automatically extract Exim's version number from tags in the git
1570 repository when doing development or release builds.
1572 PP/02 Raise smtp_cmd_buffer_size to 16kB.
1573 Bugzilla 879. Patch from Paul Fisher.
1575 PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
1576 Heavily based on revision 40f9a89a from Simon Arlott's tree.
1579 PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
1581 PP/05 Variable $av_failed, true if the AV scanner deferred.
1582 Bugzilla 1078. Patch from John Horne.
1584 PP/06 Stop make process more reliably on build failure.
1585 Bugzilla 1087. Patch from Heiko Schlittermann.
1587 PP/07 Make maildir_use_size_file an _expandable_ boolean.
1588 Bugzilla 1089. Patch from Heiko Schlittermann.
1590 PP/08 Handle ${run} returning more data than OS pipe buffer size.
1591 Bugzilla 1131. Patch from Holger Weiß.
1593 PP/09 Handle IPv6 addresses with SPF.
1594 Bugzilla 860. Patch from Wolfgang Breyha.
1596 PP/10 GnuTLS: support TLS 1.2 & 1.1.
1598 Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
1601 PP/11 match_* no longer expand right-hand-side by default.
1602 New compile-time build option, EXPAND_LISTMATCH_RHS.
1603 New expansion conditions, "inlist", "inlisti".
1605 PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
1607 PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
1609 PP/14 fix log_write() format string regression from TF/03.
1610 Bugzilla 1152. Patch from Dmitry Isaikin.
1616 PP/01 The new ldap_require_cert option would segfault if used. Fixed.
1618 PP/02 Harmonised TLS library version reporting; only show if debugging.
1619 Layout now matches that introduced for other libraries in 4.74 PP/03.
1621 PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
1623 PP/04 New "dns_use_edns0" global option.
1625 PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
1628 PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
1629 nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
1631 TK/01 Updated PolarSSL code to 0.14.2.
1632 Bugzilla 1097. Patch from Andreas Metzler.
1634 PP/07 Catch divide-by-zero in ${eval:...}.
1635 Fixes bugzilla 1102.
1637 PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
1640 TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
1641 format-string attack -- SECURITY: remote arbitrary code execution.
1643 TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
1644 time unintentionally subject to list matching rules, letting the header
1645 cause arbitrary Exim lookups (of items which can occur in lists, *not*
1646 arbitrary string expansion). This allowed for information disclosure.
1648 PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
1649 INT_MIN/-1 -- value coerced to INT_MAX.
1655 NM/01 Workaround for PCRE version dependency in version reporting
1658 TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
1659 This fixes portability to compilers other than gcc, notably
1660 Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
1662 TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
1663 makefiles for portability to HP-UX and POSIX correctness.
1665 PP/01 Permit LOOKUP_foo enabling on the make command-line.
1666 Also via indented variable definition in the Makefile.
1667 (Debugging by Oliver Heesakkers).
1669 PP/02 Restore caching of spamd results with expanded spamd_address.
1670 Patch from author of expandable spamd_address patch, Wolfgang Breyha.
1672 PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
1673 Improves build reliability. Fix from: Frank Elsner
1675 NM/02 Fix wide character breakage in the rfc2047 coding
1676 Fixes bug 1064. Patch from Andrey N. Oktyabrski
1678 NM/03 Allow underscore in dnslist lookups
1679 Fixes bug 1026. Patch from Graeme Fowler
1681 PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
1682 Code patches from Adam Ciarcinski of NetBSD.
1684 NM/04 Fixed exiqgrep to cope with mailq missing size issue
1687 PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
1688 is logged, to avoid truncation. Patch from John Horne.
1690 PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
1691 Patch from Jakob Hirsch.
1693 PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
1694 SQL string expansion failure details.
1695 Patch from Andrey Oktyabrski.
1697 PP/08 Bugzilla 486: implement %M datestamping in log filenames.
1698 Patch from Simon Arlott.
1700 PP/09 New lookups functionality failed to compile on old gcc which rejects
1701 extern declarations in function scope.
1702 Patch from Oliver Fleischmann
1704 PP/10 Use sig_atomic_t for flags set from signal handlers.
1705 Check getgroups() return and improve debugging.
1706 Fixed developed for diagnosis in bug 927 (which turned out to be
1709 PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
1710 Patch from Mark Zealey.
1712 PP/12 Bugzilla 1056: Improved spamd server selection.
1713 Patch from Mark Zealey.
1715 PP/13 Bugzilla 1086: Deal with maildir quota file races.
1716 Based on patch from Heiko Schlittermann.
1718 PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
1719 Patch from Uwe Doering, sign-off by Michael Haardt.
1721 NM/05 Fix to spam.c to accommodate older gcc versions which dislike
1722 variable declaration deep within a block. Bug and patch from
1725 PP/15 lookups-Makefile IRIX compatibility coercion.
1727 PP/16 Make DISABLE_DKIM build knob functional.
1729 NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
1730 Patch by Simon Arlott
1732 TF/03 Fix valgrind.h portability to C89 compilers that do not support
1733 variable argument macros. Our copy now differs from upstream.
1739 TF/01 Failure to get a lock on a hints database can have serious
1740 consequences so log it to the panic log.
1742 TF/02 Log LMTP confirmation messages in the same way as SMTP,
1743 controlled using the smtp_confirmation log selector.
1745 TF/03 Include the error message when we fail to unlink a spool file.
1747 DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
1748 With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
1749 for maintaining out-of-tree patches for some time.
1751 PP/01 Bugzilla 139: Documentation and portability issues.
1752 Avoid GNU Makefile-isms, let Exim continue to build on BSD.
1753 Handle per-OS dynamic-module compilation flags.
1755 PP/02 Let /dev/null have normal permissions.
1756 The 4.73 fixes were a little too stringent and complained about the
1757 permissions on /dev/null. Exempt it from some checks.
1758 Reported by Andreas M. Kirchwitz.
1760 PP/03 Report version information for many libraries, including
1761 Exim version information for dynamically loaded libraries. Created
1762 version.h, now support a version extension string for distributors
1763 who patch heavily. Dynamic module ABI change.
1765 PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
1766 privilege escalation vulnerability whereby the Exim run-time user
1767 can cause root to append content of the attacker's choosing to
1770 PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
1773 PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
1774 If dropping privileges for untrusted macros, we disabled normal logging
1775 on the basis that it would fail; for the Exim run-time user, this is not
1776 the case, and it resulted in successful deliveries going unlogged.
1777 Fixed. Reported by Andreas Metzler.
1783 PP/01 Date: & Message-Id: revert to normally being appended to a message,
1784 only prepend for the Resent-* case. Fixes regression introduced in
1785 Exim 4.70 by NM/22 for Bugzilla 607.
1787 PP/02 Include check_rfc2047_length in configure.default because we're seeing
1788 increasing numbers of administrators be bitten by this.
1790 JJ/01 Added DISABLE_DKIM and comment to src/EDITME
1792 PP/03 Bugzilla 994: added openssl_options main configuration option.
1794 PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
1796 PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
1798 PP/06 Adjust NTLM authentication to handle SASL Initial Response.
1800 PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
1801 without a peer certificate, leading to a segfault because of an
1802 assumption that peers always have certificates. Be a little more
1803 paranoid. Problem reported by Martin Tscholak.
1805 PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
1806 filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
1807 NB: ClamAV planning to remove STREAM in "middle of 2010".
1808 CL also introduces -bmalware, various -d+acl logging additions and
1809 more caution in buffer sizes.
1811 PP/09 Implemented reverse_ip expansion operator.
1813 PP/10 Bugzilla 937: provide a "debug" ACL control.
1815 PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
1817 PP/12 Bugzilla 973: Implement --version.
1819 PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
1821 PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
1823 PP/15 Bugzilla 816: support multiple condition rules on Routers.
1825 PP/16 Add bool_lax{} expansion operator and use that for combining multiple
1826 condition rules, instead of bool{}. Make both bool{} and bool_lax{}
1827 ignore trailing whitespace.
1829 JJ/02 prevent non-panic DKIM error from being sent to paniclog
1831 JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
1834 PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
1835 Notification from Dr Andrew Aitchison.
1837 PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
1838 ExtendedDetectionInfo response format.
1839 Notification from John Horne.
1841 PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
1844 PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
1845 XSL and documented dependency on system catalogs, with examples of how
1848 DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
1851 DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
1852 of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
1853 configuration file which is writeable by the Exim user or group.
1855 DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
1856 of configuration files to cover files specified with the -C option if
1857 they are going to be used with root privileges, not just the default
1860 DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
1861 option (effectively making it always true).
1863 DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
1864 files to be used while preserving root privileges.
1866 DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
1867 that rogue child processes cannot use them.
1869 PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
1870 run-time user, instead of root.
1872 PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
1873 Exim run-time user without dropping privileges.
1875 DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
1876 result string, instead of calling string_vformat() twice with the same
1879 DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
1880 for other users. Others should always drop root privileges if they use
1881 -C on the command line, even for a whitelisted configure file.
1883 DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
1885 NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
1891 JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
1892 $data_path, and $header_path variables; fixed documentation bugs and
1895 JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
1896 exipick to access non-standard spools, including the "frozen" queue
1899 NM/01 Bugzilla 965: Support mysql stored procedures.
1900 Patch from Alain Williams
1902 NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
1904 NM/03 Bugzilla 955: Documentation fix for max_rcpts.
1905 Patch from Andreas Metzler
1907 NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
1908 Patch from Kirill Miazine
1910 NM/05 Bugzilla 671: Added umask to procmail example.
1912 JJ/03 installed exipick 20100323.0, fixing doc bug
1914 NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
1915 directory. Notification and patch from Dan Rosenberg.
1917 TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
1919 TK/02 Improve log output when DKIM signing operation fails.
1921 MH/01 Treat the transport option dkim_domain as a colon separated
1922 list, not as a single string, and sign the message with each element,
1923 omitting multiple occurences of the same signer.
1925 NM/07 Null terminate DKIM strings, Null initialise DKIM variable
1926 Bugzilla 985, 986. Patch by Simon Arlott
1928 NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
1929 Patch by Simon Arlott
1931 PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
1932 MBX locking. Notification from Dan Rosenberg.
1938 TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
1940 NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
1942 NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
1944 NM/03 Bugzilla 847: Enable DNSDB lookup by default.
1946 NM/04 Bugzilla 915: Flag broken perl installation during build.
1952 TK/01 Added patch by Johannes Berg that expands the main option
1953 "spamd_address" if it starts with a dollar sign.
1955 TK/02 Write list of recipients to X-Envelope-Sender header when building
1956 the mbox-format spool file for content scanning (suggested by Jakob
1959 TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
1960 (http://www.dcc-servers.net/) support via dccifd. Activated by
1961 setting EXPERIMENTAL_DCC=yes in Local/Makefile.
1963 TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
1964 by Mark Daniel Reidel <mr@df.eu>.
1966 NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
1967 When building exim an external PCRE library is now needed -
1968 PCRE is a system library on the majority of modern systems.
1969 See entry on PCRE_LIBS in EDITME file.
1971 NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
1972 conversation. Added nologin parameter to request.
1973 Patch contributed by Kirill Miazine.
1975 TF/01 Do not log submission mode rewrites if they do not change the address.
1977 TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
1979 NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
1980 log files in place. Contributed by Roberto Lima.
1982 NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
1984 TF/03 Bugzilla 615: When checking the local_parts router precondition
1985 after a local_part_suffix or local_part_prefix option, Exim now
1986 does not use the address's named list lookup cache, since this
1987 contains cached lookups for the whole local part.
1989 NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
1990 Robert Millan. Documentation is in experimental-spec.txt.
1992 TF/04 Bugzilla 668: Fix parallel build (make -j).
1994 NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
1996 NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
1997 Patch provided by Jan Srzednicki.
1999 TF/05 Leading white space used to be stripped from $spam_report which
2000 wrecked the formatting. Now it is preserved.
2002 TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
2003 that they are available at delivery time.
2005 TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
2007 TF/08 TLS error reporting now respects the incoming_interface and
2008 incoming_port log selectors.
2010 TF/09 Produce a more useful error message if an SMTP transport's hosts
2011 setting expands to an empty string.
2013 NM/06 Bugzilla 744: EXPN did not work under TLS.
2014 Patch provided by Phil Pennock.
2016 NM/07 Bugzilla 769: Extraneous comma in usage fprintf
2017 Patch provided by Richard Godbee.
2019 NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
2020 acl_smtp_notquit, added index entry.
2022 NM/09 Bugzilla 787: Potential buffer overflow in string_format.
2023 Patch provided by Eugene Bujak.
2025 NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
2026 accept(). Patch provided by Maxim Dounin.
2028 NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
2029 Patch provided by Phil Pennock.
2031 NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
2033 NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
2034 Patch provided by Brad "anomie" Jorsch.
2036 NM/14 Bugzilla 622: Added timeout setting to transport filter.
2037 Patch provided by Dean Brooks.
2039 TK/05 Add native DKIM support (does not depend on external libraries).
2041 NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
2042 Patch provided by Graeme Fowler.
2044 NM/16 Bugzilla 851: Documentation example syntax fix.
2046 NM/17 Changed NOTICE file to remove references to embedded PCRE.
2048 NM/18 Bugzilla 894: Fix issue with very long lines including comments in
2051 NM/19 Bugzilla 745: TLS version reporting.
2052 Patch provided by Phil Pennock.
2054 NM/20 Bugzilla 167: bool: condition support.
2055 Patch provided by Phil Pennock.
2057 NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
2058 clients. Patch provided by Phil Pennock.
2060 NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
2061 Patch provided by Brad "anomie" Jorsch.
2063 NM/23 Bugzilla 687: Fix misparses in eximstats.
2064 Patch provided by Heiko Schlittermann.
2066 NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
2067 Patch provided by Heiko Schlittermann.
2069 NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
2070 plus update to original patch.
2072 NM/26 Bugzilla 799: Documentation correction for ratelimit.
2074 NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
2075 Patch provided by David Brownlee.
2077 NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
2079 NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
2081 NM/30 Bugzilla 888: TLS documentation bugfixes.
2083 NM/31 Bugzilla 896: Dovecot buffer overrun fix.
2085 NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
2086 Unlike the original bugzilla I have changed all shell scripts in src tree.
2088 NM/33 Bugzilla 898: Transport filter timeout fix.
2089 Patch by Todd Rinaldo.
2091 NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
2092 Patch by Serge Demonchaux.
2094 NM/35 Bugzilla 39: Base64 decode bug fixes.
2095 Patch by Jakob Hirsch.
2097 NM/36 Bugzilla 909: Correct connect() call in dcc code.
2099 NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
2101 NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
2103 NM/39 Bugzilla 911: Fixed MakeLinks build script.
2109 TK/01 Add preliminary DKIM support. Currently requires a forked version of
2110 ALT-N's libdkim that I have put here:
2111 http://duncanthrax.net/exim-experimental/
2113 Note to Michael Haardt: I had to rename some vars in sieve.c. They
2114 were called 'true' and it seems that C99 defines that as a reserved
2115 keyword to be used with 'bool' variable types. That means you could
2116 not include C99-style headers which use bools without triggering
2117 build errors in sieve.c.
2119 NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
2120 as mailq or other aliases. Changed the --help handling significantly
2121 to do whats expected. exim_usage() emits usage/help information.
2123 SC/01 Added the -bylocaldomain option to eximstats.
2125 NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
2127 NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
2129 NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
2135 PH/01 Another patch from the Sieve maintainer.
2137 PH/02 When an IPv6 address is converted to a string for single-key lookup
2138 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
2139 dots are used instead of colons so that keys in lsearch files need not
2140 contain colons. This was done some time before quoting was made available
2141 in lsearch files. However, iplsearch files do require colons in IPv6 keys
2142 (notated using the quote facility) so as to distinguish them from IPv4
2143 keys. This meant that lookups for IP addresses in host lists did not work
2144 for iplsearch lookups.
2146 This has been fixed by arranging for IPv6 addresses to be expressed with
2147 colons if the lookup type is iplsearch. This is not incompatible, because
2148 previously such lookups could never work.
2150 The situation is now rather anomalous, since one *can* have colons in
2151 ordinary lsearch keys. However, making the change in all cases is
2152 incompatible and would probably break a number of configurations.
2154 TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
2157 MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
2158 conversion specification without a maximum field width, thereby enabling
2159 a rogue spamd server to cause a buffer overflow. While nobody in their
2160 right mind would setup Exim to query an untrusted spamd server, an
2161 attacker that gains access to a server running spamd could potentially
2162 exploit this vulnerability to run arbitrary code as the Exim user.
2164 TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
2165 $primary_hostname instead of what libspf2 thinks the hosts name is.
2167 MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
2168 a directory entry by the name of the lookup key. Previously, if a
2169 symlink pointed to a non-existing file or a file in a directory that
2170 Exim lacked permissions to read, a lookup for a key matching that
2171 symlink would fail. Now it is enough that a matching directory entry
2172 exists, symlink or not. (Bugzilla 503.)
2174 PH/03 The body_linecount and body_zerocount variables are now exported in the
2177 PH/04 Added the $dnslist_matched variable.
2179 PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
2180 This means they are set thereafter only if the connection becomes
2183 PH/06 Added the client_condition to authenticators so that some can be skipped
2184 by clients under certain conditions.
2186 PH/07 The error message for a badly-placed control=no_multiline_responses left
2187 "_responses" off the end of the name.
2189 PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
2191 PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
2192 (without spaces) instead of just copying the configuration text.
2194 PH/10 Added the /noupdate option to the ratelimit ACL condition.
2196 PH/11 Added $max_received_linelength.
2198 PH/12 Added +ignore_defer and +include_defer to host lists.
2200 PH/13 Installed PCRE version 7.2. This needed some changes because of the new
2201 way in which PCRE > 7.0 is built.
2203 PH/14 Implemented queue_only_load_latch.
2205 PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
2206 MAIL command. The effect was to mangle the value on 64-bit systems.
2208 PH/16 Another patch from the Sieve maintainer.
2210 PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
2212 PH/18 If a system quota error occurred while trying to create the file for
2213 a maildir delivery, the message "Mailbox is full" was not appended to the
2214 bounce if the delivery eventually timed out. Change 4.67/27 below applied
2215 only to a quota excession during the actual writing of the file.
2217 PH/19 It seems that peer DN values may contain newlines (and other non-printing
2218 characters?) which causes problems in log lines. The DN values are now
2219 passed through string_printing() before being added to log lines.
2221 PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
2222 and InterBase are left for another time.)
2224 PH/21 Added message_body_newlines option.
2226 PH/22 Guard against possible overflow in moan_check_errorcopy().
2228 PH/23 POSIX allows open() to be a macro; guard against that.
2230 PH/24 If the recipient of an error message contained an @ in the local part
2231 (suitably quoted, of course), incorrect values were put in $domain and
2232 $local_part during the evaluation of errors_copy.
2238 MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
2239 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
2242 PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
2243 issue a MAIL command.
2245 PH/02 In an ACL statement such as
2247 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
2249 if a client was not listed at all, or was listed with a value other than
2250 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
2251 the condition was not true (as it should be), so access was not denied.
2252 The bug was that the ! inversion was incorrectly passed on to the second
2253 item. This has been fixed.
2255 PH/03 Added additional dnslists conditions == and =& which are different from
2256 = and & when the dns lookup returns more than one IP address.
2258 PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
2259 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
2261 PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
2262 FSYNC, which compiles an option called disable_fsync that allows for
2263 bypassing fsync(). The documentation is heavily laced with warnings.
2265 SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
2267 PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
2268 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
2269 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
2270 including adding "make clean"; (3) Added -fPIC when compiling the test
2271 dynamically loaded module, to get rid of a warning.
2273 MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
2274 message fails, move_frozen_messages = true and ignore_bounce_errors_after
2275 = 0s. The bug is otherwise harmless.
2277 PH/07 There was a bug in the dovecot authenticator such that the value of
2278 $auth1 could be overwritten, and so not correctly preserved, after a
2279 successful authentication. This usually meant that the value preserved by
2280 the server_setid option was incorrect.
2282 PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
2284 PH/09 Installed PCRE release 7.0.
2286 PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
2287 run for batched SMTP input. It is now run at the start of every message
2288 in the batch. While fixing this I discovered that the process information
2289 (output by running exiwhat) was not always getting set for -bs and -bS
2290 input. This is fixed, and it now also says "batched" for BSMTP.
2292 PH/11 Added control=no_pipelining.
2294 PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
2295 patch, slightly modified), and move the expansion of helo_data till after
2296 the connection is made in the smtp transport (so it can use these
2299 PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
2301 PH/14 Added log_selector = +pid.
2303 PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
2305 PH/16 Add ${if forany and ${if forall.
2307 PH/17 Added dsn_from option to vary the From: line in DSNs.
2309 PH/18 Flush SMTP output before performing a callout, unless control =
2310 no_callout_flush is set.
2312 PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
2313 was true (the default) a successful delivery failed to delete the retry
2314 item, thus causing premature timeout of the address. The bug is now
2317 PH/20 Added hosts_avoid_pipelining to the smtp transport.
2319 PH/21 Long custom messages for fakedefer and fakereject are now split up
2320 into multiline responses in the same way that messages for "deny" and
2321 other ACL rejections are.
2323 PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
2324 with slight modification.
2326 PH/23 Applied sieve patches from the maintainer "tracking the latest notify
2327 draft, changing the syntax and factoring some duplicate code".
2329 PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
2330 for deliveries of the second and subsequent messages over the same SMTP
2333 PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
2334 ${reduce, with only minor "tidies".
2336 SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
2338 PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
2339 expansion side effects.
2341 PH/27 When a message times out after an over-quota error from an Exim-imposed
2342 quota, the bounce message says "mailbox is full". This message was not
2343 being given when it was a system quota that was exceeded. It now should
2346 MH/03 Made $recipients available in local_scan(). local_scan() already has
2347 better access to the recipient list through recipients_list[], but
2348 $recipients can be useful in postmaster-provided expansion strings.
2350 PH/28 The $smtp_command and $smtp_command_argument variables were not correct
2351 in the case of a MAIL command with additional options following the
2352 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
2353 were accidentally chopped off.
2355 PH/29 SMTP synchronization checks are implemented when a command is read -
2356 there is a check that no more input is waiting when there shouldn't be
2357 any. However, for some commands, a delay in an ACL can mean that it is
2358 some time before the response is written. In this time, more input might
2359 arrive, invalidly. So now there are extra checks after an ACL has run for
2360 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
2361 pipelining has not been advertised.
2363 PH/30 MH's patch to allow iscntrl() characters to be list separators.
2365 PH/31 Unlike :fail:, a custom message specified with :defer: was not being
2366 returned in the SMTP response when smtp_return_error_details was false.
2367 This has been fixed.
2369 PH/32 Change the Dovecot authenticator to use read() and write() on the socket
2370 instead of the C I/O that was originally supplied, because problems were
2371 reported on Solaris.
2373 PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
2374 Exim which did not show up earlier: it was assuming that a call to
2375 SSL_CTX_set_info_callback() might give an error value. In fact, there is
2376 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
2377 was a macro that became an assignment, so it seemed to work. This has
2378 changed to a proper function call with a void return, hence the compile
2379 error. Exim's code has been fixed.
2381 PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
2384 PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
2386 PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
2388 PH/37 If a message is not accepted after it has had an id assigned (e.g.
2389 because it turns out to be too big or there is a timeout) there is no
2390 "Completed" line in the log. When some messages of this type were
2391 selected by exigrep, they were listed as "not completed". Others were
2392 picked up by some special patterns. I have improved the selection
2393 criteria to be more general.
2395 PH/38 The host_find_failed option in the manualroute router can now be set
2396 to "ignore", to completely ignore a host whose IP address cannot be
2397 found. If all hosts are ignored, the behaviour is controlled by the new
2398 host_all_ignored option.
2400 PH/39 In a list of hosts for manualroute, if one item (either because of multi-
2401 homing or because of multiple MX records with /mx) generated more than
2402 one IP address, and the following item turned out to be the local host,
2403 all the secondary addresses of the first item were incorrectly removed
2404 from the list, along with the local host and any following hosts (which
2405 is what is supposed to happen).
2407 PH/40 When Exim receives a message, it writes the login name, uid, and gid of
2408 whoever called Exim into the -H file. In the case of the daemon it was
2409 behaving confusingly. When first started, it used values for whoever
2410 started the daemon, but after a SIGHUP it used the Exim user (because it
2411 calls itself on a restart). I have changed the code so that it now always
2414 PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
2415 message are rejected with the same error (e.g. no authentication or bad
2416 sender address), and a DATA command is nevertheless sent (as can happen
2417 with PIPELINING or a stupid MUA), the error message that was given to the
2418 RCPT commands is included in the rejection of the DATA command. This is
2419 intended to be helpful for MUAs that show only the final error to their
2422 PH/42 Another patch from the Sieve maintainer.
2424 SC/02 Eximstats - Differentiate between permanent and temporary rejects.
2425 Eximstats - Fixed some broken HTML links and added missing column headers
2427 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
2428 columns for Rejects, Temp Rejects, Ham, and Spam rows.
2430 SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
2432 PH/43 Yet another patch from the Sieve maintainer.
2434 PH/44 I found a way to check for a TCP/IP connection going away before sending
2435 the response to the final '.' that terminates a message, but only in the
2436 case where the client has not sent further data following the '.'
2437 (unfortunately, this is allowed). However, in many cases there won't be
2438 any further data because there won't be any more messages to send. A call
2439 to select() can be used: if it shows that the input is "ready", there is
2440 either input waiting, or the socket has been closed. An attempt to read
2441 the next input character can distinguish the two cases. Previously, Exim
2442 would have sent an OK response which the client would never have see.
2443 This could lead to message repetition. This fix should cure that, at
2444 least in a lot of common cases.
2446 PH/45 Do not advertise STARTTLS in response to HELP unless it would be
2447 advertised in response to EHLO.
2453 PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
2454 fixed by 4.65/MH/01 (is this a record?) are fixed:
2456 (i) An empty string was always treated as zero by the numeric comparison
2457 operators. This behaviour has been restored.
2459 (ii) It is documented that the numeric comparison operators always treat
2460 their arguments as decimal numbers. This was broken in that numbers
2461 starting with 0 were being interpreted as octal.
2463 While fixing these problems I realized that there was another issue that
2464 hadn't been noticed. Values of message_size_limit (both the global option
2465 and the transport option) were treated as octal if they started with 0.
2466 The documentation was vague. These values are now always treated as
2467 decimal, and I will make that clear in the documentation.
2473 TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
2474 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
2477 MH/01 Don't check that the operands of numeric comparison operators are
2478 integers when their expansion is in "skipping" mode (fixes bug
2479 introduced by 4.64-PH/07).
2481 PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
2482 child addresses, Exim now panics and dies. Previously, because the count
2483 is held in a short int, deliveries were likely to be lost. As such a
2484 large number of recipients for a single message is ridiculous
2485 (performance will be very, very poor), I have chosen to impose a limit
2486 rather than extend the field.
2492 TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
2493 leftover -K file (the existence of which was triggered by #402).
2494 While we were at it, introduced process PID as part of the -K
2495 filename. This should rule out race conditions when creating
2498 TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
2499 processing considerably. Previous code took too long for large mails,
2500 triggering a timeout which in turn triggers #401.
2502 TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
2503 in the DK code in transports.c. sendfile() is not really portable,
2504 hence the _LINUX specificness.
2506 TF/01 In the add_headers option to the mail command in an Exim filter,
2507 there was a bug that Exim would claim a syntax error in any
2508 header after the first one which had an odd number of characters
2511 PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
2512 callout verification, Exim cached a "reject" for the entire domain. This
2513 is correct for most verifications, but it is not correct for a recipient
2514 verification with use_sender or use_postmaster set, because in that case
2515 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
2516 case of MAIL FROM:<> rejection from other early rejections (e.g.
2517 rejection of HELO). When verifying a recipient using a non-null MAIL
2518 address, the cache is ignored if it shows MAIL FROM:<> rejection.
2519 Whatever the result of the callout, the value of the domain cache is
2520 left unchanged (for any other kind of callout, getting as far as trying
2521 RCPT means that the domain itself is ok).
2523 PH/02 Tidied a number of unused variable and signed/unsigned warnings that
2526 PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
2527 manifest itself as EPIPE rather than ECONNECT. When tidying away a
2528 session, the daemon ignores ECONNECT errors and logs others; it now
2529 ignores EPIPE as well.
2531 PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
2532 (quoted-printable decoding).
2534 PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
2535 later the small subsequent patch to fix an introduced bug.
2537 PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
2539 PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
2541 PH/08 An error is now given if message_size_limit is specified negative.
2543 PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
2544 to be given (somewhat) arbitrary names.
2546 JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
2549 JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
2550 miscellaneous code fixes
2552 PH/10 Added the log_reject_target ACL modifier to specify where to log
2555 PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
2556 hostname. This is wrong, because it relates to the incoming message (and
2557 probably the interface on which it is arriving) and not to the outgoing
2558 callout (which could be using a different interface). This has been
2559 changed to use the value of the helo_data option from the smtp transport
2560 instead - this is what is used when a message is actually being sent. If
2561 there is no remote transport (possible with a router that sets up host
2562 addresses), $smtp_active_hostname is used.
2564 PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
2565 tweaks were necessary in order to get it to work (see also 21 below):
2566 (a) The code assumed that strncpy() returns a negative number on buffer
2567 overflow, which isn't the case. Replaced with Exim's string_format()
2569 (b) There were several signed/unsigned issues. I just did the minimum
2570 hacking in of casts. There is scope for a larger refactoring.
2571 (c) The code used strcasecmp() which is not a standard C function.
2572 Replaced with Exim's strcmpic() function.
2573 (d) The code set only $1; it now sets $auth1 as well.
2574 (e) A simple test gave the error "authentication client didn't specify
2575 service in request". It would seem that Dovecot has changed its
2576 interface. Fortunately there's a specification; I followed it and
2577 changed what the client sends and it appears to be working now.
2579 PH/13 Added $message_headers_raw to provide the headers without RFC 2047
2582 PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
2583 address A is aliased to B and C, where B exists and C does not. Without
2584 -v the output is "A verified" because verification stops after a
2585 successful redirection if more than one address is generated. However,
2586 with -v the child addresses are also verified. Exim was outputting "A
2587 failed to verify" and then showing the successful verification for C,
2588 with its parentage. It now outputs "B failed to verify", showing B's
2589 parentage before showing the successful verification of C.
2591 PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
2592 look up a TXT record in a specific list after matching in a combined
2595 PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
2596 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
2597 they consult the DNS. I had assumed they would set it the way they
2598 wanted; and indeed my experiments on Linux seem to show that in some
2599 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
2600 To be on the safe side, however, I have now made the interface to
2601 host_find_byname() similar to host_find_bydns(), with an argument
2602 containing the DNS resolver options. The host_find_byname() function now
2603 sets these options at its start, just as host_find_bydns() does. The smtp
2604 transport options dns_qualify_single and dns_search_parents are passed to
2605 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
2606 of host_find_byname() use the default settings of RES_DEFNAMES
2607 (qualify_single) but not RES_DNSRCH (search_parents).
2609 PH/17 Applied (a modified version of) Nico Erfurth's patch to make
2610 spool_read_header() do less string testing, by means of a preliminary
2611 switch on the second character of optional "-foo" lines. (This is
2612 overdue, caused by the large number of possibilities that now exist.
2613 Originally there were few.) While I was there, I also converted the
2614 str(n)cmp tests so they don't re-test the leading "-" and the first
2615 character, in the hope this might squeeze out yet more improvement.
2617 PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
2618 flag allowing group syntax was set by the header_syntax check but not
2619 turned off, possible causing trouble later; (2) The flag was not being
2620 set at all for the header_verify test, causing "group"-style headers to
2621 be rejected. I have now set it in this case, and also caused header_
2622 verify to ignore an empty address taken from a group. While doing this, I
2623 came across some other cases where the code for allowing group syntax
2624 while scanning a header line wasn't quite right (mostly, not resetting
2625 the flag correctly in the right place). These bugs could have caused
2626 trouble for malformed header lines. I hope it is now all correct.
2628 PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
2629 with the "reply" argument non-NULL. The code, however (which originally
2630 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
2631 but it didn't always do it. This confused somebody who was copying the
2632 code for some other use. I have removed all the tests.
2634 PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
2635 feature that was used to support insecure browsers during the U.S. crypto
2636 embargo. It requires special client support, and Exim is probably the
2637 only MTA that supported it -- and would never use it because real RSA is
2638 always available. This code has been removed, because it had the bad
2639 effect of slowing Exim down by computing (never used) parameters for the
2640 RSA_EXPORT functionality.
2642 PH/21 On the advice of Timo Sirainen, added a check to the dovecot
2643 authenticator to fail if there's a tab character in the incoming data
2644 (there should never be unless someone is messing about, as it's supposed
2645 to be base64-encoded). Also added, on Timo's advice, the "secured" option
2646 if the connection is using TLS or if the remote IP is the same as the
2647 local IP, and the "valid-client-cert option" if a client certificate has
2650 PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
2651 authenticators. This can be used for authorization after authentication
2652 succeeds. (In the case of plaintext, it servers for both authentication
2655 PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
2656 if any retry times were supplied.
2658 PH/24 Exim crashed if verify=helo was activated during an incoming -bs
2659 connection, where there is no client IP address to check. In this
2660 situation, the verify now always succeeds.
2662 PH/25 Applied John Jetmore's -Mset patch.
2664 PH/26 Added -bem to be like -Mset, but loading a message from a file.
2666 PH/27 In a string expansion for a processed (not raw) header when multiple
2667 headers of the same name were present, leading whitespace was being
2668 removed from all of them, but trailing whitespace was being removed only
2669 from the last one. Now trailing whitespace is removed from each header
2670 before concatenation. Completely empty headers in a concatenation (as
2671 before) are ignored.
2673 PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
2674 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
2676 PH/29 [Removed. This was a change that I later backed out, and forgot to
2677 correct the ChangeLog entry (that I had efficiently created) before
2678 committing the later change.]
2680 PH/30 Exim was sometimes attempting to deliver messages that had suffered
2681 address errors (4xx response to RCPT) over the same connection as other
2682 messages routed to the same hosts. Such deliveries are always "forced",
2683 so retry times are not inspected. This resulted in far too many retries
2684 for the affected addresses. The effect occurred only when there were more
2685 hosts than the hosts_max_try setting in the smtp transport when it had
2686 the 4xx errors. Those hosts that it had tried were not added to the list
2687 of hosts for which the message was waiting, so if all were tried, there
2688 was no problem. Two fixes have been applied:
2690 (i) If there are any address or message errors in an SMTP delivery, none
2691 of the hosts (tried or untried) are now added to the list of hosts
2692 for which the message is waiting, so the message should not be a
2693 candidate for sending over the same connection that was used for a
2694 successful delivery of some other message. This seems entirely
2695 reasonable: after all the message is NOT "waiting for some host".
2696 This is so "obvious" that I'm not sure why it wasn't done
2697 previously. Hope I haven't missed anything, but it can't do any
2698 harm, as the worst effect is to miss an optimization.
2700 (ii) If, despite (i), such a delivery is accidentally attempted, the
2701 routing retry time is respected, so at least it doesn't keep
2702 hammering the server.
2704 PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
2705 in ${readsocket because some servers need this prod.
2707 PH/32 Added some extra debug output when updating a wait-xxx database.
2709 PH/33 The hint "could be header name not terminated by colon", which has been
2710 given for certain expansion errors for a long time, was not being given
2711 for the ${if def:h_colon_omitted{... case.
2713 PH/34 The spec says: "With one important exception, whenever a domain list is
2714 being scanned, $domain contains the subject domain." There was at least
2715 one case where this was not true.
2717 PH/35 The error "getsockname() failed: connection reset by peer" was being
2718 written to the panic log as well as the main log, but it isn't really
2719 panic-worthy as it just means the connection died rather early on. I have
2720 removed the panic log writing for the ECONNRESET error when getsockname()
2723 PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
2724 runs only) independently of the message's sender address. This meant
2725 that, if the 4xx error was in fact related to the sender, a different
2726 message to the same recipient with a different sender could confuse
2727 things. In particular, this can happen when sending to a greylisting
2728 server, but other circumstances could also provoke similar problems.
2729 I have changed the default so that the retry time for these errors is now
2730 based a combination of the sender and recipient addresses. This change
2731 can be overridden by setting address_retry_include_sender=false in the
2734 PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
2735 remote server are returned as part of bounce messages. This was not
2736 happening for LMTP over a pipe (the lmtp transport), but now it is the
2737 same for both kinds of LMTP.
2739 PH/38 Despite being documented as not happening, Exim was rewriting addresses
2740 in header lines that were in fact CNAMEs. This is no longer the case.
2742 PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
2743 and queue runs started by the daemon processed all messages. This has
2744 been fixed so that -R and -S can now usefully be given with -q<time>.
2746 PH/40 Import PCRE release 6.7 (fixes some bugs).
2748 PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
2750 PH/42 Give an error if -q is specified more than once.
2752 PH/43 Renamed the variables $interface_address and $interface_port as
2753 $received_ip_address and $received_port, to make it clear that these
2754 values apply to message reception, and not to the outgoing interface when
2755 a message is delivered. (The old names remain recognized, of course.)
2757 PH/44 There was no timeout on the connect() call when using a Unix domain
2758 socket in the ${readsocket expansion. There now is.
2760 PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
2761 be meaningful with "accept".
2763 SC/01 Eximstats V1.43
2764 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
2766 SC/02 Eximstats V1.44
2767 Use a glob alias rather than an array ref in the generated
2768 parser. This improves both readability and performance.
2770 SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
2771 Collect SpamAssassin and rejection statistics.
2772 Don't display local sender or destination tables unless
2773 there is data to show.
2774 Added average volumes into the top table text output.
2776 SC/04 Eximstats V1.46
2777 Collect data on the number of addresses (recipients)
2778 as well as the number of messages.
2780 SC/05 Eximstats V1.47
2781 Added 'Message too big' to the list of mail rejection
2782 reasons (thanks to Marco Gaiarin).
2784 SC/06 Eximstats V1.48
2785 Mainlog lines which have GMT offsets and are too short to
2786 have a flag are now skipped.
2788 SC/07 Eximstats V1.49 (Alain Williams)
2789 Added the -emptyok flag.
2791 SC/08 Eximstats V1.50
2792 Fixes for obtaining the IP address from reject messages.
2794 JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
2795 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
2796 whitespace changes from 4.64-PH/27
2798 JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
2801 JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
2802 are found, allow negative numbers in numeric criteria)
2804 JJ/06 exipick.20061117.2, added new $message_body_missing variable
2806 JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
2807 to match changes made in 4.64-PH/43
2809 PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
2811 PH/47 Put in an explicit test for a DNS lookup of an address record where the
2812 "domain" is actually an IP address, and force a failure. This locks out
2813 those revolvers/nameservers that support "A-for-A" lookups, in
2814 contravention of the specifications.
2816 PH/48 When a host name was looked up from an IP address, and the subsequent
2817 forward lookup of the name timed out, the host name was left in
2818 $sender_host_name, contrary to the specification.
2820 PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
2821 restricted to single-key lookups, Exim was not diagnosing an error if
2822 * or *@ was used with a query-style lookup.
2824 PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
2826 MH/01 local_scan ABI version incremented to 1.1. It should have been updated
2827 long ago, but noone interested enough thought of it. Let's just say that
2828 the "1.1" means that there are some new functions that weren't there at
2829 some point in the past.
2831 PH/51 Error processing for expansion failure of helo_data from an smtp
2832 transport during callout processing was broken.
2834 PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
2835 tested/used via the -bh/-bhc/-bs options.
2837 PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
2838 bug, fixed in subsequent PCRE releases).
2840 PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
2841 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
2843 PH/55 Check for a ridiculously long file name in exim_dbmbuild.
2849 SC/01 Use a glob alias rather than an array ref in eximstats generated
2850 parser. This improves both readability and performance.
2852 SC/02 Collect SpamAssassin and rejection statistics in eximstats.
2853 Don't display local sender or destination tables in eximstats unless
2854 there is data to show.
2855 Added average volumes into the eximstats top table text output.
2857 SC/03 Collect data on the number of addresses (recipients) as well
2858 as the number of messages in eximstats.
2860 TF/01 Correct an error in the documentation for the redirect router. Exim
2861 does (usually) call initgroups() when daemonizing.
2863 TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
2864 with consistent privilege compared to when running as a daemon.
2866 TF/03 Note in the spec that $authenticated_id is not set for local
2867 submissions from trusted users.
2869 TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
2870 Thanks to Dean Brooks <dean@iglou.com> for the patch.
2872 TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
2873 by adding some example configuration directives to the default
2874 configuration file. A little bit of work is required to uncomment the
2875 directives and define how usernames and passwords are checked, but
2876 there is now a framework to start from.
2878 PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
2879 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
2880 without this. I don't know how relevant this is to other LDAP libraries.
2882 PH/02 Add the verb name to the "unknown ACL verb" error.
2884 PH/03 Magnus Holmgren's patch for filter_prepend_home.
2886 PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
2888 PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
2889 directory not expanded when it should be if an expanded home directory
2890 was set for the address (which is overridden by the transport).
2892 PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
2895 PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
2896 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
2897 because it is too late at that time, and has no effect.
2899 PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
2900 security issue with \' (bugzilla #107). I could not use the
2901 PQescapeStringConn() function, because it needs a PGconn value as one of
2904 PH/08 When testing addresses using -bt, indicate those final addresses that
2905 are duplicates that would not cause an additional delivery. At least one
2906 person was confused, thinking that -bt output corresponded to deliveries.
2907 (Suppressing duplicates isn't a good idea as you lose the information
2908 about possibly different redirections that led to the duplicates.)
2910 PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
2911 systems where poll() doesn't work, in particular OS X.
2913 PH/10 Added more information to debugging output for retry time not reached.
2915 PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
2916 operations in malware.c.
2918 PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
2921 PH/13 If write_rejectlog was set false when logging was sent to syslog with
2922 syslog_duplication set false, log lines that would normally be written
2923 both the the main log and to the reject log were not written to syslog at
2926 PH/14 In the default configuration, change the use of "message" in ACL warn
2927 statements to "add_header".
2929 PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
2930 not followed by a command (e.g. "seen endif").
2932 PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
2933 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
2936 PH/17 Added extra conditions to the default value of delay_warning_condition
2940 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
2941 { match{$h_precedence:}{(?i)bulk|list|junk} } \
2942 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
2945 The Auto-Submitted: and various List- headers are standardised, whereas I
2946 don't think Precedence: ever was.
2948 PH/18 Refactored debugging code in route_finduser() to show more information,
2949 in particular, the error code if getpwnam() issues one.
2951 PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
2952 This is apparently needed in addition to the PH/07 change above to avoid
2953 any possible encoding problems.
2955 PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
2956 but not after initializing Perl.
2958 PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
2959 output them only if debugging. By default they are written stderr,
2960 apparently, which is not desirable.
2962 PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
2965 JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
2968 JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
2970 PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
2971 authenticated or an ident call has been made. Suppress the default
2972 values for $authenticated_id and $authenticated_sender (but permit -oMai
2973 and -oMas) when testing with -bh.
2975 PH/24 Re-jigged the order of the tests in the default configuration so that the
2976 tests for valid domains and recipients precede the DNS black list and CSA
2977 tests, on the grounds that those ones are more expensive.
2979 PH/25 Exim was not testing for a space following SMTP commands such as EHLO
2980 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
2981 This bug exists in every version of Exim that I still have, right back to
2984 PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
2985 However, an attempt to turn on case-sensitivity in a regex key by
2986 including (?-i) didn't work because the subject string was already
2987 lowercased, and the effects were non-intuitive. It turns out that a
2988 one-line patch can be used to allow (?-i) to work as expected.
2994 TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
2995 other effects) broke the use of negated acl sub-conditions.
2997 PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
3000 PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
3001 "Deny" causes Exim to reject the incoming connection with a 554 error.
3002 Unfortunately, if there is a major crisis, such as a disk failure,
3003 tcp-wrappers gives "deny", whereas what one would like would be some
3004 kind of temporary error. A kludge has been added to help with this.
3005 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
3006 554 error is used if errno is still zero or contains ENOENT (which occurs
3007 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
3010 PH/03 Add -lutil to the default FreeBSD LIBS setting.
3012 PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
3013 errors. Otherwise a message that provokes a temporary error (when other
3014 messages do not) can cause a whole host to time out.
3016 PH/05 Batch deliveries by appendfile and pipe transports did not work when the
3017 addresses were routed directly to files or pipes from a redirect router.
3018 File deliveries just didn't batch; pipe deliveries might have suffered
3021 PH/06 A failure to get a lock for a hints database would erroneously always say
3022 "Failed to get write lock", even when it was really a read lock.
3024 PH/07 The appendfile transport was creating MBX lock files with a fixed mode
3025 of 0600. This has been changed to use the value of the lockfile_mode
3026 option (which defaults to 0600).
3028 PH/08 Applied small patch from the Sieve maintainer.
3030 PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
3031 folder from quota calculations, a direct delivery into this folder messed
3032 up the contents of the maildirsize file. This was because the regex was
3033 used only to exclude .Trash (or whatever) when the size of the mailbox
3034 was calculated. There was no check that a delivery was happening into an
3035 excluded directory. This bug has been fixed by ignoring all quota
3036 processing for deliveries into excluded directories.
3038 PH/10 Added the maildirfolder_create_regex option to appendfile.
3044 PH/01 The code for finding all the local interface addresses on a FreeBSD
3045 system running IPv6 was broken. This may well have applied to all BSD
3046 systems, as well as to others that have similar system calls. The broken
3047 code found IPv4 interfaces correctly, but gave incorrect values for the
3048 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
3049 that it would not match correctly against @[] and not recognize the IPv6
3052 PH/02 The ipliteral router was not recognizing addresses of the form user@
3053 [ipv6:....] because it didn't know about the "ipv6:" prefix.
3055 PH/03 Added disable_ipv6.
3057 PH/04 Changed $reply_address to use the raw form of the headers instead of the
3058 decoded form, because it is most often used to construct To: headers
3059 lines in autoreplies, and the decoded form may well be syntactically
3060 invalid. However, $reply_address has leading white space removed, and all
3061 newlines turned into spaces so that the autoreply transport does not
3064 PH/05 If group was specified without a user on a router, and no group or user
3065 was specified on a transport, the group from the router was ignored.
3067 PH/06 Increased the number of ACL variables to 20 of each type, and arranged
3068 for visible compile-time settings that can be used to change these
3069 numbers, for those that want even more. Backwards compatibility with old
3070 spool files has been maintained. However, going back to a previous Exim
3071 release will lost any variables that are in spool files.
3073 PH/07 Two small changes when running in the test harness: increase delay when
3074 passing a TCP/IP connection to a new process, in case the original
3075 process has to generate a bounce, and remove special handling of
3076 127.0.0.2 (sic), which is no longer necessary.
3078 PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
3079 be the same on different OS.
3081 PH/09 Moved a debug statement in filter processing to avoid a race problem when
3084 JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
3085 whether --show-vars was specified or not
3087 JJ/02 exipick: Added support for new ACL variable spool format introduced
3090 PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
3091 syntactically invalid From: or Reply-to: line, and a filter used this to
3092 generate an autoreply, and therefore failed to obtain an address for the
3093 autoreply, Exim could try to deliver to a non-existent relative file
3094 name, causing unrelated and misleading errors. What now happens is that
3095 it logs this as a hard delivery error, but does not attempt to create a
3098 PH/11 The exinext utility has a -C option for testing purposes, but although
3099 the given file was scanned by exinext itself; it wasn't being passed on
3100 when Exim was called.
3102 PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
3103 an end-of-file indication when reading a command response.
3105 PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
3106 compiled. In many other places in Exim, IPv6 addresses are always
3107 recognized, so I have changed this. It also means that IPv4 domain
3108 literals of the form [IPV4:n.n.n.n] are now always recognized.
3110 PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
3111 used if the router is not running as root, for example, when verifying at
3112 ACL time, or when using -bh. The debugging output from this situation was
3113 non-existent - all you got was a failure to exec. I have made two
3116 (a) Failures to set uid/gid, the current directory, or a process leader
3117 in a subprocess such as that created by queryprogram now generate
3118 suitable debugging output when -d is set.
3120 (b) The queryprogram router detects when it is not running as root,
3121 outputs suitable debugging information if -d is set, and then runs
3122 the subprocess without attempting to change uid/gid.
3124 PH/15 Minor change to Makefile for building test_host (undocumented testing
3127 PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
3128 additional section of a DNS packet that returns MX or SRV records.
3129 Instead, it always explicitly searches for A/AAAA records. This avoids
3130 major problems that occur when a DNS server includes only records of one
3131 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
3132 fixed another bug: if SRV records were looked up and the corresponding
3133 address records were *not* found in the additional section, the port
3134 values from the SRV records were lost.
3136 PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
3137 using the correct key (the original address) when searching the retry
3138 rules in order to find which one to use for generating the retry hint.
3140 PH/18 If quota_warn_message contains a From: header, Exim now refrains from
3141 adding the default one. Similarly, if it contains a Reply-To: header, the
3142 errors_reply_to option, if set, is not used.
3144 PH/19 When calculating a retry time, Exim used to measure the "time since
3145 failure" by looking at the "first failed" field in the retry record. Now
3146 it does not use this if it is later than than the arrival time of the
3147 message. Instead it uses the arrival time. This makes for better
3148 behaviour in cases where some deliveries succeed, thus re-setting the
3149 "first failed" field. An example is a quota failure for a huge message
3150 when small messages continue to be delivered. Without this change, the
3151 "time since failure" will always be short, possible causing more frequent
3152 delivery attempts for the huge message than are intended.
3153 [Note: This change was subsequently modified - see PH/04 for 4.62.]
3155 PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
3156 $1, $2, $3) because the numerical variables can be reset during some
3157 expansion items (e.g. "match"), thereby losing the authentication data.
3159 PH/21 Make -bV show the size of off_t variables so that the test suite can
3160 decide whether to run tests for quotas > 2G.
3162 PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
3163 mailbox_size, and mailbox_filecount in the appendfile transport. If a
3164 filecount value is greater than 2G or if a quota value is greater than 2G
3165 on a system where the size of off_t is not greater than 4, a panic error
3168 PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
3169 never match. The debug and -bh output now contains an explicit error
3170 message indicating a malformed IPv4 address or mask.
3172 PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
3173 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
3174 PH/23 above applies.
3176 PH/25 Do not write to syslog when running in the test harness. The only
3177 occasion when this arises is a failure to open the main or panic logs
3178 (for which there is an explicit test).
3180 PH/26 Added the /no_tell option to "control=freeze".
3182 PH/27 If a host name lookup failed very early in a connection, for example, if
3183 the IP address matched host_lookup and the reverse lookup yielded a name
3184 that did not have a forward lookup, an error message of the form "no IP
3185 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
3186 could be logged. Now it outputs the IP address instead of "NULL".
3188 PH/28 An enabling patch from MH: add new function child_open_exim2() which
3189 allows the sender and the authenticated sender to be set when
3190 submitting a message from within Exim. Since child_open_exim() is
3191 documented for local_scan(), the new function should be too.
3193 PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
3194 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
3195 results in an empty string is now treated as unset.
3197 PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
3199 PH/31 Added sender_verify_fail logging option.
3201 PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
3202 needed by RFC 822 but not by RFC 2822 was commented out. I have now
3203 tidied the source and removed it altogether.
3205 PH/33 When a queue run was abandoned because the load average was too high, a
3206 log line was always written; now it is written only if the queue_run log
3207 selector is set. In addition, the log line for abandonment now contains
3208 information about the queue run such as the pid. This is always present
3209 in "start" and "stop" lines but was omitted from the "abandon" line.
3211 PH/34 Omit spaces between a header name and the colon in the error message that
3212 is given when verify = headers_syntax fails (if there are lots of them,
3213 the message gets confusing).
3215 PH/35 Change the default for dns_check_names_pattern to allow slashes within
3216 names, as there are now some PTR records that contain slashes. This check
3217 is only to protect against broken name servers that fall over on strange
3218 characters, so the fact that it applies to all lookups doesn't matter.
3220 PH/36 Now that the new test suite is complete, we can remove some of the
3221 special code in Exim that was needed for the old test suite. For example,
3222 sorting DNS records because real resolvers return them in an arbitrary
3223 order. The new test suite's fake resolver always returns records in the
3226 PH/37 When running in the test harness, use -odi for submitted messages (e.g.
3227 bounces) except when queue_only is set, to avoid logging races between
3228 the different processes.
3230 PH/38 Panic-die if .include specifies a non-absolute path.
3232 PH/39 A tweak to the "H" retry rule from its user.
3234 JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
3235 a label. They prevented compilation on older perls.
3237 JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
3238 a warning to be raised on newish perls.
3240 JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
3241 on queue. Changes to match documented behaviour of showing count of
3242 messages matching specified criteria.
3244 PH/40 Changed the default ident timeout from 30s to 5s.
3246 PH/41 Added support for the use of login_cap features, on those BSD systems
3247 that have them, for controlling the resources used by pipe deliveries.
3249 PH/42 The content-scanning code uses fopen() to create files in which to put
3250 message data. Previously it was not paying any attention to the mode of
3251 the files. Exim runs with umask(0) because the rest of the code creates
3252 files with open(), and sets the required mode explicitly. Thus, these
3253 files were ending up world-writeable. This was not a big issue, because,
3254 being within the spool directory, they were not world-accessible. I have
3255 created a function called modefopen, which takes an additional mode
3256 argument. It sets umask(777), creates the file, chmods it to the required
3257 mode, then resets the umask. All the relevant calls to fopen() in the
3258 content scanning code have been changed to use this function.
3260 PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
3261 to 24 hours. This avoids potential overflow problems when processing G
3262 and H retry rules. I suspect nobody ever tinkers with this value.
3264 PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
3266 PH/45 When the plaintext authenticator is running as a client, the server's
3267 challenges are checked to ensure they are valid base64 strings. By
3268 default, the authentication attempt is cancelled if an invalid string is
3269 received. Setting client_ignore_invalid_base64 true ignores these errors.
3270 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
3271 they are received. Thus, the responses can be made to depend on the
3272 challenges. If an invalid string is ignored, an empty string is placed in
3275 PH/46 Messages that are created by the autoreply transport now contains a
3276 References: header, in accordance with RFCs 2822 and 3834.
3278 PH/47 Added authenticated_sender_force to the smtp transport.
3280 PH/48 The ${prvs expansion was broken on systems where time_t was long long.
3282 PH/49 Installed latest patch from the Sieve maintainer.
3284 PH/50 When an Exim quota was set without a file count quota, and mailbox_size
3285 was also set, the appendfile transport was unnecessarily scanning a
3286 directory of message files (e.g. for maildir delivery) to find the count
3287 of files (along with the size), even though it did not need this
3288 information. It now does the scan only if it needs to find either the
3289 size of the count of files.
3291 PH/51 Added ${time_eval: to convert Exim time strings into seconds.
3293 PH/52 Two bugs concerned with error handling when the smtp transport is
3296 (i) Exim was not creating retry information for temporary errors given
3297 for individual recipients after the DATA command when the smtp transport
3298 was used in LMTP mode. This meant that they could be retried too
3299 frequently, and not timed out correctly.
3301 (ii) Exim was setting the flag that allows error details to be returned
3302 for LMTP errors on RCPT commands, but not for LMTP errors for individual
3303 recipients that were returned after the DATA command.
3305 PH/53 This is related to PH/52, but is more general: for any failing address,
3306 when detailed error information was permitted to be returned to the
3307 sender, but the error was temporary, then after the final timeout, only
3308 "retry timeout exceeded" was returned. Now it returns the full error as
3309 well as "retry timeout exceeded".
3311 PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
3312 do this, and (what is worse) MTAs that accept it.
3314 PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
3315 will now be deprecated.
3317 PH/56 New os.c-cygwin from the Cygwin maintainer.
3319 JJ/06 exipick: added --unsorted option to allow unsorted output in all output
3320 formats (previously only available in exim formats via -bpr, -bpru,
3321 and -bpra. Now also available in native and exiqgrep formats)
3323 JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
3324 with very large, slow to parse queues
3326 JJ/08 exipick: added ! as generic prefix to negate any criteria format
3328 JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
3330 PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
3331 responses to authentication challenges, though it was showing the
3332 challenges; (ii) I've removed the CR characters from the debug output for
3335 PH/58 Allow for the insertion of a newline as well as a space when a string
3336 is turned into more than one encoded-word during RFC 2047 encoding. The
3337 Sieve code now uses this.
3339 PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
3340 data_4xx, lost_connection, tls_required.
3342 PH/60 When a VRFY deferred or FAILED, the log message rather than the user
3343 message was being sent as an SMTP response.
3345 PH/61 Add -l and -k options to exicyclog.
3347 PH/62 When verifying, if an address was redirected to one new address, so that
3348 verification continued, and the new address failed or deferred after
3349 having set something in $address_data, the value of $address_data was not
3350 passed back to the ACL. This was different to the case when no
3351 redirection occurred. The value is now passed back in both cases.
3353 PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
3354 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
3355 use login_cap.h, so on its own it isn't the distinguishing feature. The
3356 new name refers directly to the setclassresources() function.
3358 PH/65 Added configuration files for NetBSD3.
3360 PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
3362 PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
3363 is preferred over IPv4.
3365 PH/68 The bounce_return_message and bounce_return_body options were not being
3366 honoured for bounces generated during the reception of non-SMTP messages.
3367 In particular, this applied to messages rejected by the ACL. This bug has
3368 been fixed. However, if bounce_return_message is true and bounce_return_
3369 body is false, the headers that are returned for a non-SMTP message
3370 include only those that have been read before the error was detected.
3371 (In the case of an ACL rejection, they have all been read.)
3373 PH/69 The HTML version of the specification is now built in a directory called
3374 spec_html instead of spec.html, because the latter looks like a path with
3375 a MIME-type, and this confuses some software.
3377 PH/70 Catch two compiler warnings in sieve.c.
3379 PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
3380 function verify_get_ident() calls ip_connect() to connect a socket, but
3381 if the "connect()" function timed out, ip_connect() used to close the
3382 socket. However, verify_get_ident() also closes the socket later, and in
3383 between Exim writes to the log, which may get opened at this point. When
3384 the socket was closed in ip_connect(), the log could get the same file
3385 descriptor number as the socket. This naturally causes chaos. The fix is
3386 not to close the socket in ip_connect(); the socket should be closed by
3387 the function that creates it. There was only one place in the code where
3388 this was missing, in the iplookup router, which I don't think anybody now
3389 uses, but I've fixed it anyway.
3391 PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
3392 well as to direct DNS lookups. Otherwise the handling of names in host
3393 lists is inconsistent and therefore confusing.
3399 PH/01 Two changes to the default runtime configuration:
3401 (1) Move the checks for relay_from_hosts and authenticated clients from
3402 after to before the (commented out) DNS black list checks.
3404 (2) Add control=submission to the relay_from_hosts and authenticated
3405 clients checks, on the grounds that messages accepted by these
3406 statements are most likely to be submissions.
3408 PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
3410 (1) Generate an error if the third argument for the ${prvs expansion is
3413 (2) Treat a missing third argument of ${prvscheck as if it were an empty
3416 (3) Reset the variables that are obtained from the first argument of
3417 ${prvscheck and used in the second argument before leaving the code,
3418 because their memory is reclaimed, so using them afterwards may do
3421 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
3422 one (it's much easier than Tom thought :-).
3424 (5) Because of (4), we can now allow for the use of $prvscheck_result
3425 inside the third argument.
3427 PH/03 For some reason, the default setting of PATH when running a command from
3428 a pipe transport was just "/usr/bin". I have changed it to
3431 PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
3432 anything to be listed in the output from -bV.
3434 PH/05 When a filter generated an autoreply, the entire To: header line was
3435 quoted in the delivery log line, like this:
3437 => >A.N.Other <ano@some.domain> <original@ddress> ...
3439 This has been changed so that it extracts the operative address. There
3440 may be more than one such address. If so, they are comma-separated, like
3443 => >ano@some.domain,ona@other.domain <original@ddress> ...
3445 PH/06 When a client host used a correct literal IP address in a HELO or EHLO
3446 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
3447 not being looked up in the rDNS to get a host name, Exim was showing the
3448 IP address twice in Received: lines, even though the IP addresses were
3449 identical. For example:
3451 Received: from [1.2.3.4] (helo=[1.2.3.4])
3453 However, if the real host name was known, it was omitting the HELO data
3454 if it matched the actual IP address. This has been tidied up so that it
3455 doesn't show the same IP address twice.
3457 PH/07 When both +timestamp and +memory debugging was on, the value given by
3458 $tod_xxx expansions could be wrong, because the tod_stamp() function was
3459 called by the debug printing, thereby overwriting the timestamp buffer.
3460 Debugging no longer uses the tod_stamp() function when +timestamp is set.
3462 PH/08 When the original message was included in an autoreply transport, it
3463 always said "this is a copy of the message, including all the headers",
3464 even if body_only or headers_only was set. It now gives an appropriate
3467 PH/09 Applied a patch from the Sieve maintainer which:
3469 o fixes some comments
3470 o adds the (disabled) notify extension core
3471 o adds some debug output for the result of if/elsif tests
3472 o points to the current vacation draft in the documentation
3473 and documents the missing references header update
3477 o fixes a bug in processing the envelope test (when testing
3478 multiple envelope elements, the last element determined the
3481 PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
3482 Electronic Mail") by including:
3484 Auto-submitted: auto-generated
3486 in the messages that it generates (bounce messages and others, such as
3487 warnings). In the case of bounce messages for non-SMTP messages, there was
3488 also a typo: it was using "Auto_submitted" (underscore instead of
3489 hyphen). Since every message generated by Exim is necessarily in response
3490 to another message, thes have all been changed to:
3492 Auto-Submitted: auto-replied
3494 in accordance with these statements in the RFC:
3496 The auto-replied keyword:
3498 - SHOULD be used on messages sent in direct response to another
3499 message by an automatic process,
3501 - MUST NOT be used on manually-generated messages,
3503 - MAY be used on Delivery Status Notifications (DSNs) and Message
3504 Disposition Notifications (MDNs),
3506 - MUST NOT be used on messages generated by automatic or periodic
3507 processes, except for messages which are automatic responses to
3510 PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
3511 to the default Received: header definition.
3513 PH/12 Added log selector acl_warn_skipped (default on).
3515 PH/13 After a successful wildlsearch lookup, discard the values of numeric
3516 variables because (a) they are in the wrong storage pool and (b) even if
3517 they were copied, it wouldn't work properly because of the caching.
3519 PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
3520 checking when decoding. Apparently there are clients that generate
3521 overlong encoded strings. Why am I not surprised?
3523 PH/15 If the first argument of "${if match_address" was not empty, but did not
3524 contain an "@" character, Exim crashed. Now it writes a panic log message
3525 and treats the condition as false.
3527 PH/16 In autoreply, treat an empty string for "once" the same as unset.
3529 PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
3530 extension "envelope-auth". The code is finished and in agreement with
3531 other implementations, but there is no documentation so far and in fact,
3532 nobody wrote the draft yet. This extension is currently #undef'ed, thus
3533 not changing the active code.
3535 Print executed "if" and "elsif" statements when debugging is used. This
3536 helps a great deal to understand what a filter does.
3538 Document more things not specified clearly in RFC3028. I had all this
3539 sorted out, when out of a sudden new issues came to my mind. Oops."
3541 PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
3544 PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
3545 canonical form (as documented). However, after a host name lookup from
3546 the IP address, check_host() was doing a simple string comparison with
3547 addresses acquired from the DNS when checking that the found name did
3548 have the original IP as one of its addresses. Since any found IPv6
3549 addresses are likely to be in abbreviated form, the comparison could
3550 fail. Luckily, there already exists a function for doing the comparison
3551 by converting both addresses to binary, so now that is used instead of
3552 the text comparison.
3554 PH/20 There was another similar case to PH/19, when a complete host name was
3555 given in a host list; looking up its IP address could give an abbreviated
3556 form, whereas the current host's name might or might not be abbreviated.
3557 The same fix has been applied.
3563 PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
3564 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
3567 PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
3568 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
3570 PH/03 Typo: missing ".o" in src/pcre/Makefile.
3572 PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
3573 header line, restrict the check to what is listed in RFCs 2369 and 2929.
3574 Also, for "Auto-Submitted", treat anything other than "no" as
3575 non-personal, in accordance with RFC 3834. (Previously it treated
3576 anything starting "auto-" as non-personal.)
3578 TF/01 The control=submission/name=... option had a problem with syntax
3579 errors if the name included a slash character. The /name= option
3580 now slurps the rest of the string, so it can include any characters
3581 but it must come last in the list of options (after /sender_retain
3584 PH/05 Some modifications to the interface to the fake nameserver for the new
3592 TK/01 Added the "success_on_redirect" address verification option. See
3593 NewStuff for rationale and an example.
3595 PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
3597 PH/02 Patch to exigrep to allow it to work on syslog lines.
3599 PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
3600 fread() to skip over the body file's header line, because in Cygwin the
3601 header line is locked and is inaccessible.
3603 PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
3604 co-exist for some time) to make it clear that it is the Exim ID that is
3605 referenced, not the Message-ID: header line.
3607 PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
3608 string_format() function, because snprintf() does not exist on all
3611 PH/06 The use of forbid_filter_existstest now also locks out the use of the
3612 ${stat: expansion item.
3614 PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
3615 protocol synchronization error", to keep the pedants happy.
3617 PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
3618 well as for IRIX systems, when gcc is being used. See the host.c source
3621 PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
3623 PH/10 Named domain lists were not working if used in a queue_smtp_domains
3626 PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
3627 transport and to the smtp transport in LMTP mode.
3629 TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
3631 PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
3632 run a filter in a subprocess. This could lead to confusion in subsequent
3633 lookups in the parent process. There should also be a search_tidyup() at
3634 the end of the subprocess.
3636 PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
3637 only if the host matched helo_try_verify_hosts, which caused the
3638 verification to occur when the EHLO/HELO command was issued. The ACL just
3639 tested the remembered result. Now, if a previous verification attempt has
3640 not happened, "verify = helo" does it there and then.
3642 JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
3644 TK/03 Fix log output including CR from clamd.
3646 PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
3647 exist provoked a memory error which could cause a segfault.
3649 PH/15 Installed PCRE 6.2
3651 PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
3653 PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
3654 of the problem. Specifically, suggested +O2 rather than +O1 for the
3657 PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
3659 PH/20 If a delivery was routed to a non-standard port by means of an SRV
3660 record, the port was not correctly logged when the outgoing_port log
3661 selector was set (it logged the transort's default port).
3663 PH/21 Added support for host-specific ports to manualroute, queryprogram,
3664 fallback_hosts, and "hosts" in the smtp transport.
3666 PH/22 If the log selector "outgoing_port" is set, the port is now also given on
3667 host errors such as "Connection refused".
3669 PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
3670 authentication with radiusclient 0.4.9:
3672 - Error returned from rc_read_config was caught wrongly
3673 - Username/password not passed on to radius server due to wrong length.
3675 The presumption is that some radiusclient API changes for 4.51/PH/17
3676 were not taken care of correctly. The code is still untested by me (my
3677 Linux distribution still has 0.3.2 of radiusclient), but it was
3678 contributed by a Radius user.
3680 PH/24 When doing a callout, the value of $domain wasn't set correctly when
3681 expanding the "port" option of the smtp transport.
3683 TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
3684 while reading a MIME header. Thanks to Tom Hughes for a patch.
3686 PH/24 Include config.h inside local_scan.h so that configuration settings are
3689 PH/25 Make $smtp_command_argument available after all SMTP commands. This means
3690 that in an ACL for RCPT (for example), you can examine exactly what was
3693 PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
3694 commands, but it was not correctly comparing the address with the actual
3695 client host address. Thus, it would show the EHLO address in Received:
3696 header lines when this was not necessary.
3698 PH/27 Added the % operator to ${eval:}.
3700 PH/28 Exim tries to create and chdir to its spool directory when it starts;
3701 it should be ignoring failures (because with -C, for example, it has lost
3702 privilege). It wasn't ignoring creation failures other than "already
3705 PH/29 Added "crypteq" to the list of supported features that Exim outputs when
3708 PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
3709 because an input line was too long, either on its own, or by virtue of
3710 too many continuations, the temporary file was not being removed, and the
3711 return code was incorrect.
3713 PH/31 Missing "BOOL" in function definition in filtertest.c.
3715 PH/32 Applied Sieve patches from the maintainer.
3717 TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
3719 PH/33 Added "verify = not_blind".
3721 PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
3722 Local/Makefile (with some defaults set). These are used in built scripts
3723 such as exicyclog, but they have never been used in the exim_install
3724 script (though there are many overriding facilities there). I have
3725 arranged that the exim_install script now takes note of these two
3728 PH/35 Installed configuration files for Dragonfly.
3730 PH/36 When a locally submitted message by a trusted user did not contain a
3731 From: header, and the sender address was obtained from -f or from an SMTP
3732 MAIL command, and the trusted user did not use -F to supply a sender
3733 name, $originator_name was incorrectly used when constructing a From:
3734 header. Furthermore, $originator_name was used for submission mode
3735 messages from external hosts without From: headers in a similar way,
3736 which is clearly wrong.
3738 PH/37 Added control=suppress_local_fixups.
3740 PH/38 When log_selector = +received_sender was set, and the addition of the
3741 sender made the log line's construction buffer exactly full, or one byte
3742 less than full, an overflow happened when the terminating "\n" was
3745 PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
3746 when the result of a list match is failure because a DNS lookup failed.
3748 PH/40 RM_COMMAND is now used in the building process.
3750 PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
3751 the "build-* directories that it finds.
3753 PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
3754 address in a domain literal was a prefix of an interface address.
3756 PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
3757 when verifying a sender address, unless rewrite_headers is false.
3759 PH/44 Wrote a long comment about why errors_to addresses are verified as
3760 recipients, not senders.
3762 TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
3763 the ratelimit ACL was added.
3765 PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
3767 PH/46 Added extra information about PostgreSQL errors to the error string.
3769 PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
3770 avoiding the need to install special zones in a real server. This is
3771 backwards compatible; if it can't find the fake resolver, it drops back.
3772 Thus, both old and new test suites can be run.
3774 TF/02 Added util/ratelimit.pl
3776 TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
3777 clock is set back in time.
3779 TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
projects / exim.git / blob