Apply the look_for_it magic to chmod. (bug#602)
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
89dec7b6 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.549 2008/07/18 17:55:42 fanf2 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
210f147e
NM
6Exim version 4.70
7-----------------
8
cdd3bb85
TK
9TK/01 Added patch by Johannes Berg that expands the main option
10 "spamd_servers" if it starts with a dollar sign.
11
12TK/02 Write list of recipients to X-Envelope-Sender header when building
13 the mbox-format spool file for content scanning (suggested by Jakob
14 Hirsch)
15
16TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
17 (http://www.dcc-servers.net/) support via dccifd. Activated by
18 setting EXPERIMENTAL_DCC=yes in Local/Makefile. Check out
19 experimental_spec.txt for more documentation.
20
21TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
22 by Mark Daniel Reidel <mr@df.eu>.
23
210f147e
NM
24NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
25 When building exim an external PCRE library is now needed -
26 PCRE is a system library on the majority of modern systems.
27 See entry on PCRE_LIBS in EDITME file.
28
deafd5b3
NM
29NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
30 conversation. Added nologin parameter to request.
31 Patch contributed by Kirill Miazine
32
089793a4
TF
33TF/01 Do not log submission mode rewrites if they do not change the address.
34
5f16ca82
TF
35TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
36
dae9d94e
NM
37NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
38 log files in place. Contributed by Roberto Lima
39
3f0da4d0
NM
40NM/04 Bugzilla 667: close socket used by dovecot authenticator
41
06864c44
TF
42TF/03 Bugzilla 615: When checking the local_parts router precondition
43 after a local_part_suffix or local_part_prefix option, Exim now
44 does not use the address's named list lookup cache, since this
45 contains cached lookups for the whole local part.
46
65a7d8c3
NM
47NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
48 Robert Millan. Documentation is in experimental-spec.txt
49
23510047 50TF/04 Bugzilla 668: Fix parallel build (make -j).
65a7d8c3 51
5f28a6e8
NM
52NM/05 Bugzilla 437: Prevent Maildix aux files being created with mode 000
53
6c588e74
NM
54NM/05 Bugzilla 598: Improvedment to Dovecot authenticator handling.
55 Patch provided by Jan Srzednicki
56
89dec7b6
TF
57TF/05 Leading white space used to be stripped from $spam_report which
58 wrecked the formatting. Now it is preserved.
5f28a6e8 59
deafd5b3 60
47db1125
NM
61Exim version 4.69
62-----------------
63
4b3504d0
TK
64TK/01 Add preliminary DKIM support. Currently requires a forked version of
65 ALT-N's libdkim that I have put here:
66 http://duncanthrax.net/exim-experimental/
67
68 Note to Michael Haardt: I had to rename some vars in sieve.c. They
69 were called 'true' and it seems that C99 defines that as a reserved
70 keyword to be used with 'bool' variable types. That means you could
71 not include C99-style headers which use bools without triggering
72 build errors in sieve.c.
73
81ea09ca
NM
74NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
75 as mailq or other aliases. Changed the --help handling significantly
76 to do whats expected. exim_usage() emits usage/help information.
77
f13cddcb
SC
78SC/01 Added the -bylocaldomain option to eximstats.
79
8ad076b2
NM
80NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr
81
a843aaa6
NM
82NM/03 Bugzilla 613: Documentation fix for acl_not_smtp
83
47db1125
NM
84NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall)
85
86
eb4c0de6
PH
87Exim version 4.68
88-----------------
89
90PH/01 Another patch from the Sieve maintainer.
91
6a3bceb1
PH
92PH/02 When an IPv6 address is converted to a string for single-key lookup
93 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
94 dots are used instead of colons so that keys in lsearch files need not
95 contain colons. This was done some time before quoting was made available
96 in lsearch files. However, iplsearch files do require colons in IPv6 keys
97 (notated using the quote facility) so as to distinguish them from IPv4
98 keys. This meant that lookups for IP addresses in host lists did not work
99 for iplsearch lookups.
100
101 This has been fixed by arranging for IPv6 addresses to be expressed with
102 colons if the lookup type is iplsearch. This is not incompatible, because
103 previously such lookups could never work.
104
105 The situation is now rather anomolous, since one *can* have colons in
106 ordinary lsearch keys. However, making the change in all cases is
107 incompatible and would probably break a number of configurations.
108
2e30fa9d
TK
109TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
110 version.
111
0806a9c5
MH
112MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
113 conversion specification without a maximum field width, thereby enabling
114 a rogue spamd server to cause a buffer overflow. While nobody in their
115 right mind would setup Exim to query an untrusted spamd server, an
116 attacker that gains access to a server running spamd could potentially
117 exploit this vulnerability to run arbitrary code as the Exim user.
118
ae276964
TK
119TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
120 $primary_hostname instead of what libspf2 thinks the hosts name is.
121
0f2cbd1b
MH
122MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
123 a directory entry by the name of the lookup key. Previously, if a
124 symlink pointed to a non-existing file or a file in a directory that
125 Exim lacked permissions to read, a lookup for a key matching that
126 symlink would fail. Now it is enough that a matching directory entry
127 exists, symlink or not. (Bugzilla 503.)
128
2b85bce7
PH
129PH/03 The body_linecount and body_zerocount variables are now exported in the
130 local_scan API.
131
93655c46
PH
132PH/04 Added the $dnslist_matched variable.
133
6c512171
PH
134PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
135 This means they are set thereafter only if the connection becomes
136 encrypted.
137
138PH/06 Added the client_condition to authenticators so that some can be skipped
139 by clients under certain conditions.
140
aa6dc513
PH
141PH/07 The error message for a badly-placed control=no_multiline_responses left
142 "_responses" off the end of the name.
143
a96603a0
PH
144PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
145
8f240103
PH
146PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
147 (without spaces) instead of just copying the configuration text.
148
149PH/10 Added the /noupdate option to the ratelimit ACL condition.
150
d677b2f2
PH
151PH/11 Added $max_received_linelength.
152
d52120f2
PH
153PH/12 Added +ignore_defer and +include_defer to host lists.
154
64f2600a
PH
155PH/13 Installed PCRE version 7.2. This needed some changes because of the new
156 way in which PCRE > 7.0 is built.
157
8669f003
PH
158PH/14 Implemented queue_only_load_latch.
159
a4dc33a8
PH
160PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
161 MAIL command. The effect was to mangle the value on 64-bit systems.
162
d6a60c0f
PH
163PH/16 Another patch from the Sieve maintainer.
164
8f128379
PH
165PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
166
8932dffe
PH
167PH/18 If a system quota error occurred while trying to create the file for
168 a maildir delivery, the message "Mailbox is full" was not appended to the
169 bounce if the delivery eventually timed out. Change 4.67/27 below applied
170 only to a quota excession during the actual writing of the file.
d6a60c0f 171
ddea74fa 172PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
173 characters?) which causes problems in log lines. The DN values are now
174 passed through string_printing() before being added to log lines.
175
ddea74fa 176PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
177 and InterBase are left for another time.)
178
ddea74fa
PH
179PH/21 Added message_body_newlines option.
180
ce9f225c
PH
181PH/22 Guard against possible overflow in moan_check_errorcopy().
182
19897d52
PH
183PH/23 POSIX allows open() to be a macro; guard against that.
184
bc64a74d
PH
185PH/24 If the recipient of an error message contained an @ in the local part
186 (suitably quoted, of course), incorrect values were put in $domain and
187 $local_part during the evaluation of errors_copy.
188
eb4c0de6 189
b4ed4da0
PH
190Exim version 4.67
191-----------------
192
22ad45c9
MH
193MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
194 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
195 Jan Srzednicki.
196
b4ed4da0
PH
197PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
198 issue a MAIL command.
199
431b7361
PH
200PH/02 In an ACL statement such as
201
202 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
203
204 if a client was not listed at all, or was listed with a value other than
205 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
206 the condition was not true (as it should be), so access was not denied.
207 The bug was that the ! inversion was incorrectly passed on to the second
208 item. This has been fixed.
209
210PH/03 Added additional dnslists conditions == and =& which are different from
211 = and & when the dns lookup returns more than one IP address.
212
83da1223
PH
213PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
214 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
215
54fc8428
PH
216PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
217 FSYNC, which compiles an option called disable_fsync that allows for
218 bypassing fsync(). The documentation is heavily laced with warnings.
219
34c5e8dd
SC
220SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
221
bbe15da8
PH
222PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
223 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
224 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
225 including adding "make clean"; (3) Added -fPIC when compiling the test
226 dynamically loaded module, to get rid of a warning.
227
0e8a9471
MH
228MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
229 message fails, move_frozen_messages = true and ignore_bounce_errors_after
230 = 0s. The bug is otherwise harmless.
231
f0872424
PH
232PH/07 There was a bug in the dovecot authenticator such that the value of
233 $auth1 could be overwritten, and so not correctly preserved, after a
234 successful authentication. This usually meant that the value preserved by
235 the server_setid option was incorrect.
236
b01dd148
PH
237PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
238
6bf342e1
PH
239PH/09 Installed PCRE release 7.0.
240
273f34d0
PH
241PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
242 run for batched SMTP input. It is now run at the start of every message
243 in the batch. While fixing this I discovered that the process information
244 (output by running exiwhat) was not always getting set for -bs and -bS
245 input. This is fixed, and it now also says "batched" for BSMTP.
246
cf8b11a5
PH
247PH/11 Added control=no_pipelining.
248
41c7c167
PH
249PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
250 patch, slightly modified), and move the expansion of helo_data till after
251 the connection is made in the smtp transport (so it can use these
252 values).
253
9c57cbc0
PH
254PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
255
f3f065bb
PH
256PH/14 Added log_selector = +pid.
257
047bdd8c
PH
258PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
259
0ce9abe6
PH
260PH/16 Add ${if forany and ${if forall.
261
0e22dfd1
PH
262PH/17 Added dsn_from option to vary the From: line in DSNs.
263
4c590bd1
PH
264PH/18 Flush SMTP output before performing a callout, unless control =
265 no_callout_flush is set.
266
09945f1e
PH
267PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
268 was true (the default) a successful delivery failed to delete the retry
269 item, thus causing premature timeout of the address. The bug is now
270 fixed.
271
c51b8e75
PH
272PH/20 Added hosts_avoid_pipelining to the smtp transport.
273
e28326d8
PH
274PH/21 Long custom messages for fakedefer and fakereject are now split up
275 into multiline reponses in the same way that messages for "deny" and
276 other ACL rejections are.
277
75b1493f
PH
278PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
279 with slight modification.
280
7c5214ec
PH
281PH/23 Applied sieve patches from the maintainer "tracking the latest notify
282 draft, changing the syntax and factoring some duplicate code".
283
4311097e
PH
284PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
285 for deliveries of the second and subsequent messages over the same SMTP
286 connection.
287
29f89cad
PH
288PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
289 ${reduce, with only minor "tidies".
290
5e687460
SC
291SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
292
c3611384
PH
293PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
294 expansion side effects.
295
5a11a7b4
PH
296PH/27 When a message times out after an over-quota error from an Exim-imposed
297 quota, the bounce message says "mailbox is full". This message was not
298 being given when it was a system quota that was exceeded. It now should
299 be the same.
300
0e20aff9
MH
301MH/03 Made $recipients available in local_scan(). local_scan() already has
302 better access to the recipient list through recipients_list[], but
303 $recipients can be useful in postmaster-provided expansion strings.
304
ca86f471
PH
305PH/28 The $smtp_command and $smtp_command_argument variables were not correct
306 in the case of a MAIL command with additional options following the
307 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
308 were accidentally chopped off.
309
a14e5636
PH
310PH/29 SMTP synchronization checks are implemented when a command is read -
311 there is a check that no more input is waiting when there shouldn't be
312 any. However, for some commands, a delay in an ACL can mean that it is
313 some time before the response is written. In this time, more input might
314 arrive, invalidly. So now there are extra checks after an ACL has run for
315 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
316 pipelining has not been advertised.
317
ec95d1a6
PH
318PH/30 MH's patch to allow iscntrl() characters to be list separators.
319
42855d71
PH
320PH/31 Unlike :fail:, a custom message specified with :defer: was not being
321 returned in the SMTP response when smtp_return_error_details was false.
322 This has been fixed.
323
57c2c631
PH
324PH/32 Change the Dovecot authenticator to use read() and write() on the socket
325 instead of the C I/O that was originally supplied, because problems were
326 reported on Solaris.
327
58c01c94
PH
328PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
329 Exim which did not show up earlier: it was assuming that a call to
330 SSL_CTX_set_info_callback() might give an error value. In fact, there is
331 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
332 was a macro that became an assignment, so it seemed to work. This has
333 changed to a proper function call with a void return, hence the compile
334 error. Exim's code has been fixed.
335
dee5a20a
PH
336PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
337 cpus.
338
d2ee6114
PH
339PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
340
b2d5182b
PH
341PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
342
79749a79
PH
343PH/37 If a message is not accepted after it has had an id assigned (e.g.
344 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
345 "Completed" line in the log. When some messages of this type were
346 selected by exigrep, they were listed as "not completed". Others were
347 picked up by some special patterns. I have improved the selection
348 criteria to be more general.
79749a79 349
c456d9bb
PH
350PH/38 The host_find_failed option in the manualroute router can now be set
351 to "ignore", to completely ignore a host whose IP address cannot be
352 found. If all hosts are ignored, the behaviour is controlled by the new
353 host_all_ignored option.
354
cd9868ec
PH
355PH/39 In a list of hosts for manualroute, if one item (either because of multi-
356 homing or because of multiple MX records with /mx) generated more than
357 one IP address, and the following item turned out to be the local host,
358 all the secondary addresses of the first item were incorrectly removed
359 from the list, along with the local host and any following hosts (which
360 is what is supposed to happen).
361
ebeaf996
PH
362PH/40 When Exim receives a message, it writes the login name, uid, and gid of
363 whoever called Exim into the -H file. In the case of the daemon it was
364 behaving confusingly. When first started, it used values for whoever
365 started the daemon, but after a SIGHUP it used the Exim user (because it
366 calls itself on a restart). I have changed the code so that it now always
367 uses the Exim user.
368
2679d413
PH
369PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
370 message are rejected with the same error (e.g. no authentication or bad
371 sender address), and a DATA command is nevertheless sent (as can happen
372 with PIPELINING or a stupid MUA), the error message that was given to the
373 RCPT commands is included in the rejection of the DATA command. This is
374 intended to be helpful for MUAs that show only the final error to their
375 users.
376
84024b72
PH
377PH/42 Another patch from the Sieve maintainer.
378
8005d38e
SC
379SC/02 Eximstats - Differentiate between permanent and temporary rejects.
380 Eximstats - Fixed some broken HTML links and added missing column headers
381 (Jez Hancock).
382 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
383 columns for Rejects, Temp Rejects, Ham, and Spam rows.
384
3298c6c6
SC
385SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
386
a43a27c5
PH
387PH/43 Yet another patch from the Sieve maintainer.
388
58eb016e 389PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
390 the response to the final '.' that terminates a message, but only in the
391 case where the client has not sent further data following the '.'
392 (unfortunately, this is allowed). However, in many cases there won't be
393 any further data because there won't be any more messages to send. A call
394 to select() can be used: if it shows that the input is "ready", there is
395 either input waiting, or the socket has been closed. An attempt to read
396 the next input character can distinguish the two cases. Previously, Exim
58eb016e 397 would have sent an OK response which the client would never have see.
563b63fa
PH
398 This could lead to message repetition. This fix should cure that, at
399 least in a lot of common cases.
58eb016e 400
b43a74ea
PH
401PH/45 Do not advertise STARTTLS in response to HELP unless it would be
402 advertised in response to EHLO.
403
b4ed4da0 404
5dd1517f
PH
405Exim version 4.66
406-----------------
407
408PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
409 fixed by 4.65/MH/01 (is this a record?) are fixed:
410
411 (i) An empty string was always treated as zero by the numeric comparison
412 operators. This behaviour has been restored.
413
414 (ii) It is documented that the numeric comparison operators always treat
415 their arguments as decimal numbers. This was broken in that numbers
416 starting with 0 were being interpreted as octal.
417
418 While fixing these problems I realized that there was another issue that
419 hadn't been noticed. Values of message_size_limit (both the global option
420 and the transport option) were treated as octal if they started with 0.
421 The documentation was vague. These values are now always treated as
422 decimal, and I will make that clear in the documentation.
423
424
93cfa765
TK
425Exim version 4.65
426-----------------
427
428TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
429 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
430 versions. (#438)
431
d6066548
MH
432MH/01 Don't check that the operands of numeric comparison operators are
433 integers when their expansion is in "skipping" mode (fixes bug
434 introduced by 4.64-PH/07).
435
4362ff0d
PH
436PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
437 child addresses, Exim now panics and dies. Previously, because the count
438 is held in a short int, deliveries were likely to be lost. As such a
439 large number of recipients for a single message is ridiculous
440 (performance will be very, very poor), I have chosen to impose a limit
441 rather than extend the field.
442
93cfa765 443
944e9e9c
TF
444Exim version 4.64
445-----------------
aa41d2de 446
21d74bd9
TK
447TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
448 leftover -K file (the existence of which was triggered by #402).
449 While we were at it, introduced process PID as part of the -K
450 filename. This should rule out race conditions when creating
451 these files.
452
453TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
454 processing considerably. Previous code took too long for large mails,
455 triggering a timeout which in turn triggers #401.
456
457TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
458 in the DK code in transports.c. sendfile() is not really portable,
459 hence the _LINUX specificness.
944e9e9c
TF
460
461TF/01 In the add_headers option to the mail command in an Exim filter,
462 there was a bug that Exim would claim a syntax error in any
463 header after the first one which had an odd number of characters
464 in the field name.
465
2b1c6e3a
PH
466PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
467 callout verification, Exim cached a "reject" for the entire domain. This
468 is correct for most verifications, but it is not correct for a recipient
469 verification with use_sender or use_postmaster set, because in that case
470 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
471 case of MAIL FROM:<> rejection from other early rejections (e.g.
472 rejection of HELO). When verifying a recipient using a non-null MAIL
473 address, the cache is ignored if it shows MAIL FROM:<> rejection.
474 Whatever the result of the callout, the value of the domain cache is
475 left unchanged (for any other kind of callout, getting as far as trying
476 RCPT means that the domain itself is ok).
477
1f872c80
PH
478PH/02 Tidied a number of unused variable and signed/unsigned warnings that
479 gcc 4.1.1 threw up.
480
481PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
482 manifest itself as EPIPE rather than ECONNECT. When tidying away a
483 session, the daemon ignores ECONNECT errors and logs others; it now
484 ignores EPIPE as well.
485
d203e649
PH
486PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
487 (quoted-printable decoding).
488
cc2ed8f7 489PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 490 later the small subsequent patch to fix an introduced bug.
f951fd57 491
ddfcd446
PH
492PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
493
d45b1de8
PH
494PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
495
496PH/08 An error is now given if message_size_limit is specified negative.
497
38a0a95f 498PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 499 to be given (somewhat) arbitrary names.
38a0a95f 500
a2405d83
JJ
501JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
502 in 4.64-PH/09.
503
504JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
505 miscellaneous code fixes
506
6ea85e9a
PH
507PH/10 Added the log_reject_target ACL modifier to specify where to log
508 rejections.
509
26da7e20
PH
510PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
511 hostname. This is wrong, because it relates to the incoming message (and
512 probably the interface on which it is arriving) and not to the outgoing
513 callout (which could be using a different interface). This has been
514 changed to use the value of the helo_data option from the smtp transport
515 instead - this is what is used when a message is actually being sent. If
516 there is no remote transport (possible with a router that sets up host
517 addresses), $smtp_active_hostname is used.
6ea85e9a 518
14aa5a05 519PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 520 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
521 (a) The code assumed that strncpy() returns a negative number on buffer
522 overflow, which isn't the case. Replaced with Exim's string_format()
523 function.
524 (b) There were several signed/unsigned issues. I just did the minimum
525 hacking in of casts. There is scope for a larger refactoring.
526 (c) The code used strcasecmp() which is not a standard C function.
527 Replaced with Exim's strcmpic() function.
528 (d) The code set only $1; it now sets $auth1 as well.
529 (e) A simple test gave the error "authentication client didn't specify
530 service in request". It would seem that Dovecot has changed its
531 interface. Fortunately there's a specification; I followed it and
532 changed what the client sends and it appears to be working now.
533
ff75a1f7
PH
534PH/13 Added $message_headers_raw to provide the headers without RFC 2047
535 decoding.
536
e6f6568e
PH
537PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
538 address A is aliased to B and C, where B exists and C does not. Without
539 -v the output is "A verified" because verification stops after a
540 successful redirection if more than one address is generated. However,
541 with -v the child addresses are also verified. Exim was outputting "A
542 failed to verify" and then showing the successful verification for C,
543 with its parentage. It now outputs "B failed to verify", showing B's
544 parentage before showing the successful verification of C.
545
d6f6e0dc
PH
546PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
547 look up a TXT record in a specific list after matching in a combined
548 list.
549
322050c2
PH
550PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
551 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
552 they consult the DNS. I had assumed they would set it the way they
553 wanted; and indeed my experiments on Linux seem to show that in some
554 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
555 To be on the safe side, however, I have now made the interface to
556 host_find_byname() similar to host_find_bydns(), with an argument
557 containing the DNS resolver options. The host_find_byname() function now
558 sets these options at its start, just as host_find_bydns() does. The smtp
559 transport options dns_qualify_single and dns_search_parents are passed to
560 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
561 of host_find_byname() use the default settings of RES_DEFNAMES
562 (qualify_single) but not RES_DNSRCH (search_parents).
563
08955dd3
PH
564PH/17 Applied (a modified version of) Nico Erfurth's patch to make
565 spool_read_header() do less string testing, by means of a preliminary
566 switch on the second character of optional "-foo" lines. (This is
567 overdue, caused by the large number of possibilities that now exist.
568 Originally there were few.) While I was there, I also converted the
569 str(n)cmp tests so they don't re-test the leading "-" and the first
570 character, in the hope this might squeeze out yet more improvement.
571
1eccaa59
PH
572PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
573 flag allowing group syntax was set by the header_syntax check but not
574 turned off, possible causing trouble later; (2) The flag was not being
575 set at all for the header_verify test, causing "group"-style headers to
576 be rejected. I have now set it in this case, and also caused header_
577 verify to ignore an empty address taken from a group. While doing this, I
578 came across some other cases where the code for allowing group syntax
579 while scanning a header line wasn't quite right (mostly, not resetting
580 the flag correctly in the right place). These bugs could have caused
581 trouble for malformed header lines. I hope it is now all correct.
582
602e59e5
PH
583PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
584 with the "reply" argument non-NULL. The code, however (which originally
585 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
586 but it didn't always do it. This confused somebody who was copying the
587 code for some other use. I have removed all the tests.
588
411ef850
PH
589PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
590 feature that was used to support insecure browsers during the U.S. crypto
591 embargo. It requires special client support, and Exim is probably the
592 only MTA that supported it -- and would never use it because real RSA is
593 always available. This code has been removed, because it had the bad
594 effect of slowing Exim down by computing (never used) parameters for the
595 RSA_EXPORT functionality.
596
7befa435
PH
597PH/21 On the advice of Timo Sirainen, added a check to the dovecot
598 authenticator to fail if there's a tab character in the incoming data
599 (there should never be unless someone is messing about, as it's supposed
600 to be base64-encoded). Also added, on Timo's advice, the "secured" option
601 if the connection is using TLS or if the remote IP is the same as the
602 local IP, and the "valid-client-cert option" if a client certificate has
603 been verified.
604
48da4259 605PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
606 authenticators. This can be used for authorization after authentication
607 succeeds. (In the case of plaintext, it servers for both authentication
608 and authorization.)
609
48da4259
PH
610PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
611 if any retry times were supplied.
612
d1d5595c
PH
613PH/24 Exim crashed if verify=helo was activated during an incoming -bs
614 connection, where there is no client IP address to check. In this
615 situation, the verify now always succeeds.
616
0ef732d9
PH
617PH/25 Applied John Jetmore's -Mset patch.
618
328895cc
PH
619PH/26 Added -bem to be like -Mset, but loading a message from a file.
620
fd700877
PH
621PH/27 In a string expansion for a processed (not raw) header when multiple
622 headers of the same name were present, leading whitespace was being
623 removed from all of them, but trailing whitespace was being removed only
624 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
625 before concatenation. Completely empty headers in a concatenation (as
626 before) are ignored.
fd700877 627
8dce1a6f
PH
628PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
629 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
630
17af4a17
PH
631PH/29 [Removed. This was a change that I later backed out, and forgot to
632 correct the ChangeLog entry (that I had efficiently created) before
633 committing the later change.]
f6c332bd
PH
634
635PH/30 Exim was sometimes attempting to deliver messages that had suffered
636 address errors (4xx response to RCPT) over the same connection as other
637 messages routed to the same hosts. Such deliveries are always "forced",
638 so retry times are not inspected. This resulted in far too many retries
639 for the affected addresses. The effect occurred only when there were more
640 hosts than the hosts_max_try setting in the smtp transport when it had
641 the 4xx errors. Those hosts that it had tried were not added to the list
642 of hosts for which the message was waiting, so if all were tried, there
643 was no problem. Two fixes have been applied:
644
645 (i) If there are any address or message errors in an SMTP delivery, none
646 of the hosts (tried or untried) are now added to the list of hosts
647 for which the message is waiting, so the message should not be a
648 candidate for sending over the same connection that was used for a
649 successful delivery of some other message. This seems entirely
650 reasonable: after all the message is NOT "waiting for some host".
651 This is so "obvious" that I'm not sure why it wasn't done
652 previously. Hope I haven't missed anything, but it can't do any
653 harm, as the worst effect is to miss an optimization.
654
655 (ii) If, despite (i), such a delivery is accidentally attempted, the
656 routing retry time is respected, so at least it doesn't keep
657 hammering the server.
658
c1114884
PH
659PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
660 in ${readsocket because some servers need this prod.
661
7a0743eb
PH
662PH/32 Added some extra debug output when updating a wait-xxx database.
663
0d85fa3f
PH
664PH/33 The hint "could be header name not terminated by colon", which has been
665 given for certain expansion errors for a long time, was not being given
666 for the ${if def:h_colon_omitted{... case.
667
1bf43b78
PH
668PH/34 The spec says: "With one important exception, whenever a domain list is
669 being scanned, $domain contains the subject domain." There was at least
670 one case where this was not true.
671
520de300
PH
672PH/35 The error "getsockname() failed: connection reset by peer" was being
673 written to the panic log as well as the main log, but it isn't really
674 panic-worthy as it just means the connection died rather early on. I have
675 removed the panic log writing for the ECONNRESET error when getsockname()
676 fails.
677
48c7f9e2
PH
678PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
679 runs only) independently of the message's sender address. This meant
680 that, if the 4xx error was in fact related to the sender, a different
681 message to the same recipient with a different sender could confuse
682 things. In particualar, this can happen when sending to a greylisting
683 server, but other circumstances could also provoke similar problems.
684 I have changed the default so that the retry time for these errors is now
685 based a combination of the sender and recipient addresses. This change
686 can be overridden by setting address_retry_include_sender=false in the
687 smtp transport.
688
99ea1c86
PH
689PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
690 remote server are returned as part of bounce messages. This was not
691 happening for LMTP over a pipe (the lmtp transport), but now it is the
692 same for both kinds of LMTP.
693
a2042e78
PH
694PH/38 Despite being documented as not happening, Exim was rewriting addresses
695 in header lines that were in fact CNAMEs. This is no longer the case.
696
4fbcfc2e
PH
697PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
698 and queue runs started by the daemon processed all messages. This has
699 been fixed so that -R and -S can now usefully be given with -q<time>.
700
aa41d2de
PH
701PH/40 Import PCRE release 6.7 (fixes some bugs).
702
af561417
PH
703PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
704
3cc66b45
PH
705PH/42 Give an error if -q is specified more than once.
706
194cc0e4
PH
707PH/43 Renamed the variables $interface_address and $interface_port as
708 $received_ip_address and $received_port, to make it clear that these
709 values apply to message reception, and not to the outgoing interface when
710 a message is delivered. (The old names remain recognized, of course.)
711
a401ddaa
PH
712PH/44 There was no timeout on the connect() call when using a Unix domain
713 socket in the ${readsocket expansion. There now is.
714
4e88a19f
PH
715PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
716 be meaningful with "accept".
717
d7d7b289
SC
718SC/01 Eximstats V1.43
719 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
720
721SC/02 Eximstats V1.44
722 Use a glob alias rather than an array ref in the generated
723 parser. This improves both readability and performance.
724
725SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
726 Collect SpamAssassin and rejection statistics.
727 Don't display local sender or destination tables unless
728 there is data to show.
729 Added average volumes into the top table text output.
730
731SC/04 Eximstats V1.46
732 Collect data on the number of addresses (recipients)
733 as well as the number of messages.
734
735SC/05 Eximstats V1.47
736 Added 'Message too big' to the list of mail rejection
737 reasons (thanks to Marco Gaiarin).
738
739SC/06 Eximstats V1.48
740 Mainlog lines which have GMT offsets and are too short to
741 have a flag are now skipped.
742
743SC/07 Eximstats V1.49 (Alain Williams)
744 Added the -emptyok flag.
745
746SC/08 Eximstats V1.50
747 Fixes for obtaining the IP address from reject messages.
748
0ea2a468
JJ
749JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
750 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
751 whitesspace changes from 4.64-PH/27
752
753JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
754 match 4.64-PH/13
755
756JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
757 are found, allow negative numbers in numeric criteria)
758
759JJ/06 exipick.20061117.2, added new $message_body_missing variable
760
761JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
762 to match changes made in 4.64-PH/43
763
8a10f5a4
PH
764PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
765
30e18802
PH
766PH/47 Put in an explicit test for a DNS lookup of an address record where the
767 "domain" is actually an IP address, and force a failure. This locks out
768 those revolvers/nameservers that support "A-for-A" lookups, in
769 contravention of the specifications.
770
55728a4f
PH
771PH/48 When a host name was looked up from an IP address, and the subsequent
772 forward lookup of the name timed out, the host name was left in
773 $sender_host_name, contrary to the specification.
d7d7b289 774
d7837193
PH
775PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
776 restricted to single-key lookups, Exim was not diagnosing an error if
777 * or *@ was used with a query-style lookup.
778
87054a31
PH
779PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
780
ea2c01d2
MH
781MH/01 local_scan ABI version incremented to 1.1. It should have been updated
782 long ago, but noone interested enough thought of it. Let's just say that
783 the "1.1" means that there are some new functions that weren't there at
784 some point in the past.
785
e4fa6968
PH
786PH/51 Error processing for expansion failure of helo_data from an smtp
787 transport during callout processing was broken.
788
56f5d9bd
PH
789PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
790 tested/used via the -bh/-bhc/-bs options.
791
922e1c28
PH
792PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
793 bug, fixed in subsequent PCRE releases).
794
21eb6e72
PH
795PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
796 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
797
a0540757
PH
798PH/55 Check for a ridiculously long file name in exim_dbmbuild.
799
944e9e9c 800
478be7b0
SC
801Exim version 4.63
802-----------------
803
804SC/01 Use a glob alias rather than an array ref in eximstats generated
805 parser. This improves both readability and performance.
806
807SC/02 Collect SpamAssassin and rejection statistics in eximstats.
808 Don't display local sender or destination tables in eximstats unless
809 there is data to show.
810 Added average volumes into the eximstats top table text output.
811
812SC/03 Collect data on the number of addresses (recipients) as well
813 as the number of messages in eximstats.
814
2b965a65
TF
815TF/01 Correct an error in the documentation for the redirect router. Exim
816 does (usually) call initgroups() when daemonizing.
478be7b0 817
45b91596
PH
818TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
819 with consistent privilege compared to when running as a daemon.
478be7b0 820
c59f5781
TF
821TF/03 Note in the spec that $authenticated_id is not set for local
822 submissions from trusted users.
823
90fc3069
TF
824TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
825 Thanks to Dean Brooks <dean@iglou.com> for the patch.
826
6083aca0
TF
827TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
828 by adding some example configuration directives to the default
829 configuration file. A little bit of work is required to uncomment the
830 directives and define how usernames and passwords are checked, but
831 there is now a framework to start from.
832
765b530f
PH
833PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
834 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
835 without this. I don't know how relevant this is to other LDAP libraries.
836
4e167a8c
PH
837PH/02 Add the verb name to the "unknown ACL verb" error.
838
4608d683
PH
839PH/03 Magnus Holmgren's patch for filter_prepend_home.
840
b8dc3e4a
PH
841PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
842
5418e93b
PH
843PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
844 directory not expanded when it should be if an expanded home directory
845 was set for the address (which is overridden by the transport).
846
b4a9bda2
PH
847PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
848 libradius.
849
45b91596
PH
850PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
851 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
852 because it is too late at that time, and has no effect.
853
5547e2c5
PH
854PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
855 security issue with \' (bugzilla #107). I could not use the
856 PQescapeStringConn() function, because it needs a PGconn value as one of
857 its arguments.
858
dbcef0ea
PH
859PH/08 When testing addresses using -bt, indicate those final addresses that
860 are duplicates that would not cause an additional delivery. At least one
861 person was confused, thinking that -bt output corresponded to deliveries.
862 (Suppressing duplicates isn't a good idea as you lose the information
863 about possibly different redirections that led to the duplicates.)
864
25257489
PH
865PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
866 systems where poll() doesn't work, in particular OS X.
867
c816d124
PH
868PH/10 Added more information to debugging output for retry time not reached.
869
a9ccd69a
PH
870PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
871 operations in malware.c.
872
75fa1910
PH
873PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
874 signatures.
875
a7d7aa58
PH
876PH/13 If write_rejectlog was set false when logging was sent to syslog with
877 syslog_duplication set false, log lines that would normally be written
878 both the the main log and to the reject log were not written to syslog at
879 all.
880
42119b09
PH
881PH/14 In the default configuration, change the use of "message" in ACL warn
882 statements to "add_header".
883
41609df5
PH
884PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
885 not followed by a command (e.g. "seen endif").
886
a5bd321b
PH
887PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
888 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
889 latter.
890
e85a7ad5 891PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
892 so that it is now:
893
e85a7ad5
PH
894 ${if or { \
895 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
896 { match{$h_precedence:}{(?i)bulk|list|junk} } \
897 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
898 }{no}{yes}}
899
e85a7ad5
PH
900 The Auto-Submitted: and various List- headers are standardised, whereas I
901 don't think Precedence: ever was.
5dff5817 902
d8fe1c03
PH
903PH/18 Refactored debugging code in route_finduser() to show more information,
904 in particular, the error code if getpwnam() issues one.
905
16282d2b
PH
906PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
907 This is apparently needed in addition to the PH/07 change above to avoid
908 any possible encoding problems.
909
35d40a98
PH
910PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
911 but not after initializing Perl.
912
034d99ab
PH
913PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
914 output them only if debugging. By default they are written stderr,
915 apparently, which is not desirable.
916
6ec97b1b
PH
917PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
918 queries.
919
e22ca4ac
JJ
920JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
921 --not options
922
923JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
924
33d73e3b
PH
925PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
926 authenticated or an ident call has been made. Suppress the default
927 values for $authenticated_id and $authenticated_sender (but permit -oMai
928 and -oMas) when testing with -bh.
929
9ecb03f3
PH
930PH/24 Re-jigged the order of the tests in the default configuration so that the
931 tests for valid domains and recipients precede the DNS black list and CSA
932 tests, on the grounds that those ones are more expensive.
933
084efe8d
PH
934PH/25 Exim was not testing for a space following SMTP commands such as EHLO
935 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
936 This bug exists in every version of Exim that I still have, right back to
937 0.12.
938
366fc9f0
PH
939PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
940 However, an attempt to turn on case-sensitivity in a regex key by
941 including (?-i) didn't work because the subject string was already
942 lowercased, and the effects were non-intuitive. It turns out that a
943 one-line patch can be used to allow (?-i) to work as expected.
944
c59f5781 945
c887c79e
TF
946Exim version 4.62
947-----------------
948
949TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
950 other effects) broke the use of negated acl sub-conditions.
951
1cce3af8
PH
952PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
953 patch).
954
afb3eaaf
PH
955PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
956 "Deny" causes Exim to reject the incoming connection with a 554 error.
957 Unfortunately, if there is a major crisis, such as a disk failure,
958 tcp-wrappers gives "deny", whereas what one would like would be some
959 kind of temporary error. A kludge has been added to help with this.
960 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
961 554 error is used if errno is still zero or contains ENOENT (which occurs
962 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
963 451 error is used.
964
e173618b
PH
965PH/03 Add -lutil to the default FreeBSD LIBS setting.
966
dd16e114
PH
967PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
968 errors. Otherwise a message that provokes a temporary error (when other
969 messages do not) can cause a whole host to time out.
970
f7fd3850
PH
971PH/05 Batch deliveries by appendfile and pipe transports did not work when the
972 addresses were routed directly to files or pipes from a redirect router.
973 File deliveries just didn't batch; pipe deliveries might have suffered
974 odd errors.
975
d87df92c
PH
976PH/06 A failure to get a lock for a hints database would erroneously always say
977 "Failed to get write lock", even when it was really a read lock.
978
7e9f683d
PH
979PH/07 The appendfile transport was creating MBX lock files with a fixed mode
980 of 0600. This has been changed to use the value of the lockfile_mode
981 option (which defaults to 0600).
982
bfad5236
PH
983PH/08 Applied small patch from the Sieve maintainer.
984
01c490df
PH
985PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
986 folder from quota calculations, a direct delivery into this folder messed
987 up the contents of the maildirsize file. This was because the regex was
988 used only to exclude .Trash (or whatever) when the size of the mailbox
989 was calculated. There was no check that a delivery was happening into an
990 excluded directory. This bug has been fixed by ignoring all quota
991 processing for deliveries into excluded directories.
992
d6629cdc
PH
993PH/10 Added the maildirfolder_create_regex option to appendfile.
994
1cce3af8 995
214e2000
PH
996Exim version 4.61
997-----------------
998
999PH/01 The code for finding all the local interface addresses on a FreeBSD
1000 system running IPv6 was broken. This may well have applied to all BSD
1001 systems, as well as to others that have similar system calls. The broken
1002 code found IPv4 interfaces correctly, but gave incorrect values for the
1003 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
1004 that it would not match correctly against @[] and not recognize the IPv6
1005 addresses as local.
1006
f9daeae0
PH
1007PH/02 The ipliteral router was not recognizing addresses of the form user@
1008 [ipv6:....] because it didn't know about the "ipv6:" prefix.
1009
7e66e54d
PH
1010PH/03 Added disable_ipv6.
1011
c8ea1597
PH
1012PH/04 Changed $reply_address to use the raw form of the headers instead of the
1013 decoded form, because it is most often used to construct To: headers
1014 lines in autoreplies, and the decoded form may well be syntactically
1015 invalid. However, $reply_address has leading white space removed, and all
1016 newlines turned into spaces so that the autoreply transport does not
1017 grumble.
1018
911f6fde
PH
1019PH/05 If group was specified without a user on a router, and no group or user
1020 was specified on a transport, the group from the router was ignored.
1021
47ca6d6c
PH
1022PH/06 Increased the number of ACL variables to 20 of each type, and arranged
1023 for visible compile-time settings that can be used to change these
1024 numbers, for those that want even more. Backwards compatibility with old
1025 spool files has been maintained. However, going back to a previous Exim
1026 release will lost any variables that are in spool files.
1027
ed0e9820
PH
1028PH/07 Two small changes when running in the test harness: increase delay when
1029 passing a TCP/IP connection to a new process, in case the original
1030 process has to generate a bounce, and remove special handling of
1031 127.0.0.2 (sic), which is no longer necessary.
1032
eff37e47
PH
1033PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
1034 be the same on different OS.
1035
1921d2ea
PH
1036PH/09 Moved a debug statement in filter processing to avoid a race problem when
1037 testing.
1038
b3f69ca8
JJ
1039JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
1040 whether --show-vars was specified or not
1041
1042JJ/02 exipick: Added support for new ACL variable spool format introduced
1043 in 4.61-PH/06
1044
424a1c63
PH
1045PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
1046 syntactically invalid From: or Reply-to: line, and a filter used this to
1047 generate an autoreply, and therefore failed to obtain an address for the
1048 autoreply, Exim could try to deliver to a non-existent relative file
1049 name, causing unrelated and misleading errors. What now happens is that
1050 it logs this as a hard delivery error, but does not attempt to create a
1051 bounce message.
1052
7a100415
PH
1053PH/11 The exinext utility has a -C option for testing purposes, but although
1054 the given file was scanned by exinext itself; it wasn't being passed on
1055 when Exim was called.
1056
19b9dc85
PH
1057PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
1058 an end-of-file indication when reading a command response.
1059
309bd837
PH
1060PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
1061 compiled. In many other places in Exim, IPv6 addresses are always
1062 recognized, so I have changed this. It also means that IPv4 domain
1063 literals of the form [IPV4:n.n.n.n] are now always recognized.
1064
59e82a2a
PH
1065PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
1066 used if the router is not running as root, for example, when verifying at
1067 ACL time, or when using -bh. The debugging output from this situation was
1068 non-existent - all you got was a failure to exec. I have made two
1069 changes:
1070
1071 (a) Failures to set uid/gid, the current directory, or a process leader
1072 in a subprocess such as that created by queryprogram now generate
1073 suitable debugging ouput when -d is set.
1074
1075 (b) The queryprogram router detects when it is not running as root,
1076 outputs suitable debugging information if -d is set, and then runs
1077 the subprocess without attempting to change uid/gid.
1078
9edc04ce
PH
1079PH/15 Minor change to Makefile for building test_host (undocumented testing
1080 feature).
1081
1349e1e5
PH
1082PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1083 additional section of a DNS packet that returns MX or SRV records.
1084 Instead, it always explicitly searches for A/AAAA records. This avoids
1085 major problems that occur when a DNS server includes only records of one
1086 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1087 fixed another bug: if SRV records were looked up and the corresponding
1088 address records were *not* found in the additional section, the port
1089 values from the SRV records were lost.
1090
ea49d0e1
PH
1091PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1092 using the correct key (the original address) when searching the retry
1093 rules in order to find which one to use for generating the retry hint.
1094
064a94c9
PH
1095PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1096 adding the default one. Similarly, if it contains a Reply-To: header, the
1097 errors_reply_to option, if set, is not used.
1098
727071f8
PH
1099PH/19 When calculating a retry time, Exim used to measure the "time since
1100 failure" by looking at the "first failed" field in the retry record. Now
1101 it does not use this if it is later than than the arrival time of the
1102 message. Instead it uses the arrival time. This makes for better
1103 behaviour in cases where some deliveries succeed, thus re-setting the
1104 "first failed" field. An example is a quota failure for a huge message
1105 when small messages continue to be delivered. Without this change, the
1106 "time since failure" will always be short, possible causing more frequent
1107 delivery attempts for the huge message than are intended.
dd16e114 1108 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1109
f78eb7c6
PH
1110PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1111 $1, $2, $3) because the numerical variables can be reset during some
1112 expansion items (e.g. "match"), thereby losing the authentication data.
1113
21c28500
PH
1114PH/21 Make -bV show the size of off_t variables so that the test suite can
1115 decide whether to run tests for quotas > 2G.
1116
1117PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1118 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1119 filecount value is greater than 2G or if a quota value is greater than 2G
1120 on a system where the size of off_t is not greater than 4, a panic error
1121 is given.
1122
1688f43b
PH
1123PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1124 never match. The debug and -bh output now contains an explicit error
1125 message indicating a malformed IPv4 address or mask.
1126
1127PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1128 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1129 PH/23 above applies.
1130
9675b384
PH
1131PH/25 Do not write to syslog when running in the test harness. The only
1132 occasion when this arises is a failure to open the main or panic logs
1133 (for which there is an explicit test).
1134
6a3f1455
PH
1135PH/26 Added the /no_tell option to "control=freeze".
1136
dac79d3e
PH
1137PH/27 If a host name lookup failed very early in a connection, for example, if
1138 the IP address matched host_lookup and the reverse lookup yielded a name
1139 that did not have a forward lookup, an error message of the form "no IP
1140 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1141 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1142
5977a0b3
PH
1143PH/28 An enabling patch from MH: add new function child_open_exim2() which
1144 allows the sender and the authenticated sender to be set when
1145 submitting a message from within Exim. Since child_open_exim() is
1146 documented for local_scan(), the new function should be too.
1147
c91535f3
PH
1148PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1149 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1150 results in an empty string is now treated as unset.
1151
0d46a8c8
PH
1152PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1153
278c6e6c
PH
1154PH/31 Added sender_verify_fail logging option.
1155
2cbb4081
PH
1156PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1157 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1158 tidied the source and removed it altogether.
1159
3eef829e
PH
1160PH/33 When a queue run was abandoned because the load average was too high, a
1161 log line was always written; now it is written only if the queue_run log
1162 selector is set. In addition, the log line for abandonment now contains
1163 information about the queue run such as the pid. This is always present
1164 in "start" and "stop" lines but was omitted from the "abandon" line.
1165
1ab95fa6
PH
1166PH/34 Omit spaces between a header name and the colon in the error message that
1167 is given when verify = headers_syntax fails (if there are lots of them,
1168 the message gets confusing).
1169
230205fc
PH
1170PH/35 Change the default for dns_check_names_pattern to allow slashes within
1171 names, as there are now some PTR records that contain slashes. This check
1172 is only to protect against broken name servers that fall over on strange
1173 characters, so the fact that it applies to all lookups doesn't matter.
1174
75e0e026
PH
1175PH/36 Now that the new test suite is complete, we can remove some of the
1176 special code in Exim that was needed for the old test suite. For example,
1177 sorting DNS records because real resolvers return them in an arbitrary
1178 order. The new test suite's fake resolver always returns records in the
1179 same order.
1180
1181PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1182 bounces) except when queue_only is set, to avoid logging races between
1183 the different processes.
1184
145396a6
PH
1185PH/38 Panic-die if .include specifies a non-absolute path.
1186
3cd34f13
PH
1187PH/39 A tweak to the "H" retry rule from its user.
1188
11121d3d
JJ
1189JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1190 a label. They prevented compilation on older perls.
1191
1192JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1193 a warning to be raised on newish perls.
1194
1195JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1196 on queue. Changes to match documented behaviour of showing count of
1197 messages matching specified criteria.
1198
8def5aaf
PH
1199PH/40 Changed the default ident timeout from 30s to 5s.
1200
929ba01c
PH
1201PH/41 Added support for the use of login_cap features, on those BSD systems
1202 that have them, for controlling the resources used by pipe deliveries.
1203
2632889e
PH
1204PH/42 The content-scanning code uses fopen() to create files in which to put
1205 message data. Previously it was not paying any attention to the mode of
1206 the files. Exim runs with umask(0) because the rest of the code creates
1207 files with open(), and sets the required mode explicitly. Thus, these
1208 files were ending up world-writeable. This was not a big issue, because,
1209 being within the spool directory, they were not world-accessible. I have
1210 created a function called modefopen, which takes an additional mode
1211 argument. It sets umask(777), creates the file, chmods it to the required
1212 mode, then resets the umask. All the relevant calls to fopen() in the
1213 content scanning code have been changed to use this function.
1214
944a9c55
PH
1215PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1216 to 24 hours. This avoids potential overflow problems when processing G
1217 and H retry rules. I suspect nobody ever tinkers with this value.
1218
4a23603b
PH
1219PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1220
4730f942
PH
1221PH/45 When the plaintext authenticator is running as a client, the server's
1222 challenges are checked to ensure they are valid base64 strings. By
1223 default, the authentication attempt is cancelled if an invalid string is
1224 received. Setting client_ignore_invalid_base64 true ignores these errors.
1225 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1226 they are received. Thus, the responses can be made to depend on the
1227 challenges. If an invalid string is ignored, an empty string is placed in
1228 the variable.
1229
30dba1e6
PH
1230PH/46 Messages that are created by the autoreply transport now contains a
1231 References: header, in accordance with RFCs 2822 and 3834.
1232
382afc6b
PH
1233PH/47 Added authenticated_sender_force to the smtp transport.
1234
a86229cf
PH
1235PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1236
50c99ba6
PH
1237PH/49 Installed latest patch from the Sieve maintainer.
1238
d35e429d
PH
1239PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1240 was also set, the appendfile transport was unnecessarily scanning a
1241 directory of message files (e.g. for maildir delivery) to find the count
1242 of files (along with the size), even though it did not need this
1243 information. It now does the scan only if it needs to find either the
1244 size of the count of files.
1245
f90d018c
PH
1246PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1247
75def545
PH
1248PH/52 Two bugs concerned with error handling when the smtp transport is
1249 used in LMTP mode:
1250
1251 (i) Exim was not creating retry information for temporary errors given
1252 for individual recipients after the DATA command when the smtp transport
1253 was used in LMTP mode. This meant that they could be retried too
1254 frequently, and not timed out correctly.
1255
1256 (ii) Exim was setting the flag that allows error details to be returned
1257 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1258 recipients that were returned after the DATA command.
1259
1260PH/53 This is related to PH/52, but is more general: for any failing address,
1261 when detailed error information was permitted to be returned to the
1262 sender, but the error was temporary, then after the final timeout, only
1263 "retry timeout exceeded" was returned. Now it returns the full error as
1264 well as "retry timeout exceeded".
1265
c46782ef
PH
1266PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1267 do this, and (what is worse) MTAs that accept it.
1268
71fafd95
PH
1269PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1270 will now be deprecated.
1271
2c5db4fd
PH
1272PH/56 New os.c-cygwin from the Cygwin maintainer.
1273
9cf6b11a
JJ
1274JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1275 formats (previously only available in exim formats via -bpr, -bpru,
1276 and -bpra. Now also available in native and exiqgrep formats)
1277
1278JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1279 with very large, slow to parse queues
1280
1281JJ/08 exipick: added ! as generic prefix to negate any criteria format
1282
1283JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1284
898d150f
PH
1285PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1286 responses to authentication challenges, though it was showing the
1287 challenges; (ii) I've removed the CR characters from the debug output for
1288 SMTP output lines.
1289
46218253
PH
1290PH/58 Allow for the insertion of a newline as well as a space when a string
1291 is turned into more than one encoded-word during RFC 2047 encoding. The
1292 Sieve code now uses this.
1293
e97957bc
PH
1294PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1295 data_4xx, lost_connection, tls_required.
1296
81e509d7
PH
1297PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1298 message was being sent as an SMTP response.
1299
3d240ff7
PH
1300PH/61 Add -l and -k options to exicyclog.
1301
b37c4101
PH
1302PH/62 When verifying, if an address was redirected to one new address, so that
1303 verification continued, and the new address failed or deferred after
1304 having set something in $address_data, the value of $address_data was not
1305 passed back to the ACL. This was different to the case when no
1306 redirection occurred. The value is now passed back in both cases.
1307
79378e0f
PH
1308PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1309 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1310 use login_cap.h, so on its own it isn't the distinguishing feature. The
1311 new name refers directly to the setclassresources() function.
1312
e49c7bb4
PH
1313PH/65 Added configuration files for NetBSD3.
1314
d114ec46
PH
1315PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1316
f3d7df6c
PH
1317PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1318 is preferred over IPv4.
1319
715ab376
PH
1320PH/68 The bounce_return_message and bounce_return_body options were not being
1321 honoured for bounces generated during the reception of non-SMTP messages.
1322 In particular, this applied to messages rejected by the ACL. This bug has
1323 been fixed. However, if bounce_return_message is true and bounce_return_
1324 body is false, the headers that are returned for a non-SMTP message
1325 include only those that have been read before the error was detected.
1326 (In the case of an ACL rejection, they have all been read.)
1327
6b31b150
PH
1328PH/69 The HTML version of the specification is now built in a directory called
1329 spec_html instead of spec.html, because the latter looks like a path with
1330 a MIME-type, and this confuses some software.
1331
1332PH/70 Catch two compiler warnings in sieve.c.
1333
d515a917
PH
1334PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1335 function verify_get_ident() calls ip_connect() to connect a socket, but
1336 if the "connect()" function timed out, ip_connect() used to close the
1337 socket. However, verify_get_ident() also closes the socket later, and in
1338 between Exim writes to the log, which may get opened at this point. When
1339 the socket was closed in ip_connect(), the log could get the same file
1340 descriptor number as the socket. This naturally causes chaos. The fix is
1341 not to close the socket in ip_connect(); the socket should be closed by
1342 the function that creates it. There was only one place in the code where
1343 this was missing, in the iplookup router, which I don't think anybody now
1344 uses, but I've fixed it anyway.
1345
9b8fadde
PH
1346PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1347 well as to direct DNS lookups. Otherwise the handling of names in host
1348 lists is inconsistent and therefore confusing.
1349
214e2000 1350
5de37277
PH
1351Exim version 4.60
1352-----------------
1353
cc38ddbf
PH
1354PH/01 Two changes to the default runtime configuration:
1355
1356 (1) Move the checks for relay_from_hosts and authenticated clients from
1357 after to before the (commented out) DNS black list checks.
1358
1359 (2) Add control=submission to the relay_from_hosts and authenticated
1360 clients checks, on the grounds that messages accepted by these
1361 statements are most likely to be submissions.
5de37277 1362
72fdd6ae
PH
1363PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1364
1365 (1) Generate an error if the third argument for the ${prvs expansion is
1366 not a single digit.
1367
1368 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1369 string.
1370
1371 (3) Reset the variables that are obtained from the first argument of
1372 ${prvscheck and used in the second argument before leaving the code,
1373 because their memory is reclaimed, so using them afterwards may do
1374 silly things.
1375
1376 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1377 one (it's much easier than Tom thought :-).
1378
1379 (5) Because of (4), we can now allow for the use of $prvscheck_result
1380 inside the third argument.
cb9328de 1381
cb741023
PH
1382PH/03 For some reason, the default setting of PATH when running a command from
1383 a pipe transport was just "/usr/bin". I have changed it to
1384 "/bin:/usr/bin".
1385
f174f16e
PH
1386PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1387 anything to be listed in the output from -bV.
b2f5a032 1388
c25242d7
PH
1389PH/05 When a filter generated an autoreply, the entire To: header line was
1390 quoted in the delivery log line, like this:
1391
1392 => >A.N.Other <ano@some.domain> <original@ddress> ...
1393
1394 This has been changed so that it extracts the operative address. There
1395 may be more than one such address. If so, they are comma-separated, like
1396 this:
1397
1398 => >ano@some.domain,ona@other.domain <original@ddress> ...
1399
82c19f95
PH
1400PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1401 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1402 not being looked up in the rDNS to get a host name, Exim was showing the
1403 IP address twice in Received: lines, even though the IP addresses were
1404 identical. For example:
1405
1406 Received: from [1.2.3.4] (helo=[1.2.3.4])
1407
1408 However, if the real host name was known, it was omitting the HELO data
1409 if it matched the actual IP address. This has been tidied up so that it
1410 doesn't show the same IP address twice.
1411
d7ffbc12
PH
1412PH/07 When both +timestamp and +memory debugging was on, the value given by
1413 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1414 called by the debug printing, thereby overwriting the timestamp buffer.
1415 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1416
9f526266
PH
1417PH/08 When the original message was included in an autoreply transport, it
1418 always said "this is a copy of the message, including all the headers",
1419 even if body_only or headers_only was set. It now gives an appropriate
1420 message.
1421
87fcc8b9
PH
1422PH/09 Applied a patch from the Sieve maintainer which:
1423
1424 o fixes some comments
1425 o adds the (disabled) notify extension core
1426 o adds some debug output for the result of if/elsif tests
1427 o points to the current vacation draft in the documentation
1428 and documents the missing references header update
1429
1430 and most important:
1431
1432 o fixes a bug in processing the envelope test (when testing
1433 multiple envelope elements, the last element determinted the
1434 result)
1435
456682f5
PH
1436PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1437 Electronic Mail") by including:
1438
1439 Auto-submitted: auto-generated
1440
1441 in the messages that it generates (bounce messages and others, such as
1442 warnings). In the case of bounce messages for non-SMTP mesages, there was
1443 also a typo: it was using "Auto_submitted" (underscore instead of
1444 hyphen). Since every message generated by Exim is necessarily in response
1445 to another message, thes have all been changed to:
1446
1447 Auto-Submitted: auto-replied
1448
1449 in accordance with these statements in the RFC:
1450
1451 The auto-replied keyword:
1452
1453 - SHOULD be used on messages sent in direct response to another
1454 message by an automatic process,
1455
1456 - MUST NOT be used on manually-generated messages,
1457
1458 - MAY be used on Delivery Status Notifications (DSNs) and Message
1459 Disposition Notifications (MDNs),
1460
1461 - MUST NOT be used on messages generated by automatic or periodic
1462 processes, except for messages which are automatic responses to
1463 other messages.
1464
3e46c1aa
PH
1465PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1466 to the default Received: header definition.
456682f5 1467
49826d12
PH
1468PH/12 Added log selector acl_warn_skipped (default on).
1469
eba0c039
PH
1470PH/13 After a successful wildlsearch lookup, discard the values of numeric
1471 variables because (a) they are in the wrong storage pool and (b) even if
1472 they were copied, it wouldn't work properly because of the caching.
1473
a0d6ba8a
PH
1474PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1475 checking when decoding. Apparently there are clients that generate
1476 overlong encoded strings. Why am I not surprised?
1477
f0917727
PH
1478PH/15 If the first argument of "${if match_address" was not empty, but did not
1479 contain an "@" character, Exim crashed. Now it writes a panic log message
1480 and treats the condition as false.
1481
096fee00
PH
1482PH/16 In autoreply, treat an empty string for "once" the same as unset.
1483
024bd3c2
PH
1484PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1485 extension "envelope-auth". The code is finished and in agreement with
1486 other implementations, but there is no documentation so far and in fact,
1487 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1488 not changing the active code.
1489
1490 Print executed "if" and "elsif" statements when debugging is used. This
1491 helps a great deal to understand what a filter does.
1492
1493 Document more things not specified clearly in RFC3028. I had all this
1494 sorted out, when out of a sudden new issues came to my mind. Oops."
1495
df199fec
PH
1496PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1497 (Bugzilla #53).
1498
d27f1df3
PH
1499PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1500 canonical form (as documented). However, after a host name lookup from
1501 the IP address, check_host() was doing a simple string comparison with
1502 addresses acquired from the DNS when checking that the found name did
1503 have the original IP as one of its addresses. Since any found IPv6
1504 addresses are likely to be in abbreviated form, the comparison could
1505 fail. Luckily, there already exists a function for doing the comparison
1506 by converting both addresses to binary, so now that is used instead of
1507 the text comparison.
1508
96776534
PH
1509PH/20 There was another similar case to PH/19, when a complete host name was
1510 given in a host list; looking up its IP address could give an abbreviated
1511 form, whereas the current host's name might or might not be abbreviated.
1512 The same fix has been applied.
1513
5de37277 1514
9a799bc0
PH
1515Exim version 4.54
1516-----------------
1517
1518PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1519 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1520 It now does.
1521
99a4b039
PH
1522PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1523 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1524
1525PH/03 Typo: missing ".o" in src/pcre/Makefile.
1526
4b233853
PH
1527PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1528 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1529 Also, for "Auto-Submitted", treat anything other than "no" as
1530 non-personal, in accordance with RFC 3834. (Previously it treated
1531 anything starting "auto-" as non-personal.)
1532
8857ccfd
PH
1533TF/01 The control=submission/name=... option had a problem with syntax
1534 errors if the name included a slash character. The /name= option
1535 now slurps the rest of the string, so it can include any characters
1536 but it must come last in the list of options (after /sender_retain
1537 or /domain=).
1538
433a2980
PH
1539PH/05 Some modifications to the interface to the fake nameserver for the new
1540 testing suite.
1541
3e46c1aa 1542
9a799bc0 1543
e3a311ba
TK
1544Exim version 4.53
1545-----------------
1546
1547TK/01 Added the "success_on_redirect" address verification option. See
1548 NewStuff for rationale and an example.
1549
13b685f9
PH
1550PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1551
395ff96d
PH
1552PH/02 Patch to exigrep to allow it to work on syslog lines.
1553
5b68f6e4
PH
1554PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1555 fread() to skip over the body file's header line, because in Cygwin the
1556 header line is locked and is inaccessible.
1557
1ab52c69
PH
1558PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1559 co-exist for some time) to make it clear that it is the Exim ID that is
1560 referenced, not the Message-ID: header line.
1561
b07e6aa3
PH
1562PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1563 string_format() function, because snprintf() does not exist on all
1564 operating systems.
1565
254e032f
PH
1566PH/06 The use of forbid_filter_existstest now also locks out the use of the
1567 ${stat: expansion item.
1568
3af76a81
PH
1569PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1570 protocol synchronization error", to keep the pedants happy.
1571
2548ba04
PH
1572PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1573 well as for IRIX systems, when gcc is being used. See the host.c source
1574 file for comments.
1575
b6c6011d
PH
1576PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1577
cf39cf57
PH
1578PH/10 Named domain lists were not working if used in a queue_smtp_domains
1579 setting.
1580
f1513293
PH
1581PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1582 transport and to the smtp transport in LMTP mode.
1583
727549a4
PH
1584TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1585
af46795e
PH
1586PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1587 run a filter in a subprocess. This could lead to confusion in subsequent
1588 lookups in the parent process. There should also be a search_tidyup() at
1589 the end of the subprocess.
1590
d7b47fd0
PH
1591PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1592 only if the host matched helo_try_verify_hosts, which caused the
1593 verification to occur when the EHLO/HELO command was issued. The ACL just
1594 tested the remembered result. Now, if a previous verification attempt has
1595 not happened, "verify = helo" does it there and then.
1596
ee744174
JJ
1597JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1598
b582ab87
PH
1599TK/03 Fix log output including CR from clamd.
1600
41a13e0a
PH
1601PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1602 exist provoked a memory error which could cause a segfault.
1603
f625cc5a
PH
1604PH/15 Installed PCRE 6.2
1605
1606PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1607
21f7af35
PH
1608PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1609 of the problem. Specifically, suggested +O2 rather than +O1 for the
1610 HP-UX compiler.
1611
31480e42
PH
1612PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1613
2d280592
PH
1614PH/20 If a delivery was routed to a non-standard port by means of an SRV
1615 record, the port was not correctly logged when the outgoing_port log
1616 selector was set (it logged the transort's default port).
1617
7cd1141b
PH
1618PH/21 Added support for host-specific ports to manualroute, queryprogram,
1619 fallback_hosts, and "hosts" in the smtp transport.
1620
1621PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1622 host errors such as "Connection refused".
1623
750af86e
PH
1624PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1625 authentication with radiusclient 0.4.9:
1626
1627 - Error returned from rc_read_config was caught wrongly
1628 - Username/password not passed on to radius server due to wrong length.
1629
1630 The presumption is that some radiusclient API changes for 4.51/PH/17
1631 were not taken care of correctly. The code is still untested by me (my
1632 Linux distribution still has 0.3.2 of radiusclient), but it was
1633 contributed by a Radius user.
1634
1635PH/24 When doing a callout, the value of $domain wasn't set correctly when
1636 expanding the "port" option of the smtp transport.
1637
4304270b
TK
1638TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1639 while reading a MIME header. Thanks to Tom Hughes for a patch.
1640
750af86e
PH
1641PH/24 Include config.h inside local_scan.h so that configuration settings are
1642 available.
1643
64ffc24f
PH
1644PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1645 that in an ACL for RCPT (for example), you can examine exactly what was
1646 received.
1647
5dd9625b
PH
1648PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1649 commands, but it was not correctly comparing the address with the actual
1650 client host address. Thus, it would show the EHLO address in Received:
1651 header lines when this was not necessary.
1652
5591031b
PH
1653PH/27 Added the % operator to ${eval:}.
1654
ba18e66a
PH
1655PH/28 Exim tries to create and chdir to its spool directory when it starts;
1656 it should be ignoring failures (because with -C, for example, it has lost
1657 privilege). It wasn't ignoring creation failures other than "already
1658 exists".
1659
9cec981f
PH
1660PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1661 -bV or -d is used.
1662
aa2b5c79
PH
1663PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1664 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1665 too many continuations, the temporary file was not being removed, and the
1666 return code was incorrect.
aa2b5c79 1667
48a53b7f
PH
1668PH/31 Missing "BOOL" in function definition in filtertest.c.
1669
1c59d63b
PH
1670PH/32 Applied Sieve patches from the maintainer.
1671
671012da
TK
1672TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1673
1509d3a8
PH
1674PH/33 Added "verify = not_blind".
1675
1676PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1677 Local/Makefile (with some defaults set). These are used in built scripts
1678 such as exicyclog, but they have never been used in the exim_install
1679 script (though there are many overriding facilities there). I have
1680 arranged that the exim_install script now takes note of these two
1681 settings.
1682
1683PH/35 Installed configuration files for Dragonfly.
1684
2fe1a124
PH
1685PH/36 When a locally submitted message by a trusted user did not contain a
1686 From: header, and the sender address was obtained from -f or from an SMTP
1687 MAIL command, and the trusted user did not use -F to supply a sender
1688 name, $originator_name was incorrectly used when constructing a From:
1689 header. Furthermore, $originator_name was used for submission mode
1690 messages from external hosts without From: headers in a similar way,
1691 which is clearly wrong.
1692
8800895a
PH
1693PH/37 Added control=suppress_local_fixups.
1694
ccfdb010
PH
1695PH/38 When log_selector = +received_sender was set, and the addition of the
1696 sender made the log line's construction buffer exactly full, or one byte
1697 less than full, an overflow happened when the terminating "\n" was
1698 subsequently added.
1699
1130bfb0
PH
1700PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1701 when the result of a list match is failure because a DNS lookup failed.
1702
ebcb507f
PH
1703PH/40 RM_COMMAND is now used in the building process.
1704
c35e155c
PH
1705PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1706 the "build-* directories that it finds.
1707
95d1f782
PH
1708PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1709 address in a domain literal was a prefix of an interface address.
1710
fd6de02e
PH
1711PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1712 when verifying a sender address, unless rewrite_headers is false.
1713
58de37c5
PH
1714PH/44 Wrote a long comment about why errors_to addresses are verified as
1715 recipients, not senders.
1716
261cf466
TF
1717TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1718 the ratelimit ACL was added.
1719
3ee512ff
PH
1720PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1721
e08c430f
PH
1722PH/46 Added extra information about PostgreSQL errors to the error string.
1723
bef5a11f
PH
1724PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1725 avoiding the need to install special zones in a real server. This is
1726 backwards compatible; if it can't find the fake resolver, it drops back.
1727 Thus, both old and new test suites can be run.
1728
7546de58
TF
1729TF/02 Added util/ratelimit.pl
1730
e5d5a95f
TF
1731TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1732 clock is set back in time.
1733
2e88a017
TF
1734TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1735 Candler <B.Candler@pobox.com>.
1736
a5f65aa4
TF
1737TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1738 OK for addresses that are the result of redirections.
1739
e7726cbf
PH
1740PH/48 A number of further additions for the benefit of the new test suite,
1741 including a fake gethostbyname() that interfaces to the fake DNS resolver
1742 (see PH/47 above).
1743
a7fdad5b
TF
1744TF/06 The fix for widen_domains has also been applied to qualify_single and
1745 search_parents which are the other dnslookup options that can cause
1746 header rewrites.
1747
6af56900
PH
1748PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1749 type ("H").
1750
0925ede6
PH
1751PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1752
66afa403
TF
1753TF/07 Exim produced the error message "an SRV record indicated no SMTP
1754 service" if it encountered an MX record with an empty target hostname.
1755 The message is now "an MX or SRV record indicated no SMTP service".
1756
0154e85a
TF
1757TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1758 if the DNS of the sending site is misconfigured. This is quite a
1759 common situation. This change restores the behaviour of treating a
1760 helo verification defer as a failure.
1761
16f12c76
PH
1762PH/51 If self=fail was set on a router, the bounce message did not include the
1763 actual error message.
1764
bbe902f0 1765
e5a9dba6
PH
1766Exim version 4.52
1767-----------------
1768
1769TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1770
22c3b60b
PH
1771PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1772 command itself ended in error, the underlying message about the transport
1773 filter timeout was being overwritten with the pipe command error. Now the
1774 underlying error message should be appended to the second error message.
1775
06a9b4b5
PH
1776TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1777
c1ac6996
PH
1778PH/02 Reduce the amount of output that "make" produces by default. Full output
1779 can still be requested.
1780
9c7a242c
PH
1781PH/03 The warning log line about a condition test deferring for a "warn" verb
1782 was being output only once per connection, rather than after each
1783 occurrence (because it was using the same function as for successful
1784 "warn" verbs). This seems wrong, so I have changed it.
1785
87ba3f5f
PH
1786TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1787 it should not have, which might have caused a crash in the right
1788 circumstances, but probably never did.
1789
1790PH/04 Installed a modified version of Tony Finch's patch to make submission
1791 mode fix the return path as well as the Sender: header line, and to
1792 add a /name= option so that you can make the user's friendly name appear
1793 in the header line.
1794
29aba418
TF
1795TF/03 Added the control = fakedefer ACL modifier.
1796
fe0dab11
TF
1797TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1798 Mark Lowes for thorough testing.
870f6ba8 1799
11d337a4
TK
1800TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1801
1802TK/03 Merged latest SRS patch from Miles Wilton.
1803
415c8f3b
PH
1804PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1805 with the definition in sysexits.h (which is #included earlier).
1806 Fortunately, Exim does not actually use EX_OK. The code used to try to
1807 preserve the sysexits.h value, by assumimg that macro definitions were
1808 scanned for macro replacements. I have been disabused of this notion,
1809 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1810
958541e9
PH
1811PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1812 in the smtp transport. When a block could not be written in a single
1813 write() function, the timeout was being re-applied to each part-write.
1814 This seems wrong - if the receiver was accepting one byte at a time it
1815 would take for ever. The timeout is now adjusted when this happens. It
1816 doesn't have to be particularly precise.
1817
c206415f
TK
1818TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1819 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1820
2a4be8f9
PH
1821PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1822 without a domain if the check to <postmaster@domain> fails.
1823
1cba11c5
SC
1824SC/01 Eximstats: added -xls and the ability to specify output files
1825 (patch written by Frank Heydlauf).
1826
1827SC/02 Eximstats: use FileHandles for outputing results.
1828
1829SC/03 Eximstats: allow any combination of xls, txt, and html output.
1830
1831SC/04 Eximstats: fixed display of large numbers with -nvr option
1832
1833SC/05 Eximstats: fixed merging of reports with empty tables.
1834
1835SC/06 Eximstats: added the -include_original_destination flag
1836
1837SC/07 Eximstats: removed tabs and trailing whitespace.
1838
1005d00e
TK
1839TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1840
1841TK/06 MBOX spool code: Add real "From " MBOX separator line
1842 so the .eml file is really in mbox format (even though
1843 most programs do not really care). Patch from Alex Miller.
1844
1845TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1846 The latter is generated from $received_to and is only set if the
1847 message has one envelope recipient. SA can use these headers,
1848 obviously out-of-the-box. Patch from Alex Miller.
1849
9b4768fa
PH
1850PH/08 The ${def test on a variable was returning false if the variable's
1851 value was "0", contrary to what the specification has always said!
1852 The result should be true unless the variable is empty.
1853
1854PH/09 The syntax error of a character other than { following "${if
1855 def:variable_name" (after optional whitespace) was not being diagnosed.
1856 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1857 accidental colon was present, for example, could give incorrect results.
1858
0d7eb84a
PH
1859PH/10 Tidied the code in a number of places where the st_size field of a stat()
1860 result is used (not including appendfile, where other changes are about
1861 to be made).
1862
1863PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1864 This involved changing a lot of size variables from int to off_t. It
1865 should work with maildirs and everything.
1866
40727bee
TK
1867TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1868 spamd dying while we are connected to it.
1869
554d2369
TF
1870TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1871 <jgh@wizmail.org>
1872
1f922db1
PH
1873PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1874 function for BDB 4.3.
1875
ef213c3b
PH
1876PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1877
8ac170f3
PH
1878PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1879 the sources for PCRE have been re-arranged and more files are now
1880 involved.
1881
b1c749bb
PH
1882PH/15 The code I had for printing potentially long long variables in PH/11
1883 above was not the best (it lost precision). The length of off_t variables
1884 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1885 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1886 to be "long long int" or "long int". This is needed for the internal
1887 formatting function string_vformat().
b1c749bb 1888
4aac9b49
PH
1889PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1890 the configuration file to be ":syslog", then the script "guesses" where
1891 the logs files are, rather than using the compiled in default. In our
1892 case the guess is not the same as the compiled default, so the script
1893 suddenly stopped working when I started to use syslog. The patch checks
1894 to see if log_file_path is "". If so, it attempts to read it from exim
1895 with no configuration file to get the compiled in version, before it
1896 falls back to the previous guessing code."
1897
294520c8
TK
1898TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1899 implementing BATV in an Exim configuration. See NewStuff for the gory
1900 details.
1901
5bd022fe
PH
1902PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1903 Makefile that are specific to HP-UX.
1904
90e9ce59
PH
1905PH/18 If the "use_postmaster" option was set for a recipient callout together
1906 with the "random" option, the postmaster address was used as the MAIL
1907 FROM address for the random test, but not for the subsequent recipient
1908 test. It is now used for both.
1909
5ea81592
PH
1910PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1911 patch removes a few documentation additions to RFC 3028, because the
1912 latest draft now contains them. It adds the new en;ascii-case comparator
1913 and a new error check for 8bit text in MIME parts. Comparator and
1914 require names are now matched exactly. I enabled the subaddress
1915 extension, but it is not well tested yet (read: it works for me)."
1916
c6c2dc1d
PH
1917PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1918 rework some of the code of TK/09 above to avoid the hardwired use of
1919 "%lld" and "long long". Replaced the call to snprintf() with a call to
1920 string_vformat().
1921
fffffe4c
PH
1922PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1923 records point to non-existent hosts", "retry timeout exceeded", and
1924 "retry time not reached for any host after a long failure period".
ca02eafb 1925
9a26b6b2
PH
1926PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1927 experimental DomainKeys support:
1928
1929 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1930 (2) On an error such as an illegally used "control", the wrong name for
1931 the control was given.
1932
1933 These problems did NOT occur unless DomainKeys support was compiled.
1934
4aee0225
PH
1935PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1936
32d668a5
PH
1937PH/24 Added ${if match_ip condition.
1938
8187c3f3
PH
1939PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1940 databases so that it will be absolutely obvious if a crash occurs in the
1941 DB library. This is a regular occurrence (often caused by mis-matched
1942 db.h files).
1943
ff790e47 1944PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1945 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1946 picked up on a user's system that detects such things. There doesn't seem
1947 to be a gcc warning option for this - only an attribute that has to be
1948 put on the function's prototype. It seems that in Fedora Core 4 they have
1949 set this on a number of new functions. No doubt there will be more in due
1950 course.
ff790e47 1951
5417f6d1
PH
1952PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1953 specify a transport. However, if an address that was verified by such a
1954 router was the subject of a callout, Exim crashed because it tried to
1955 read the rcpt_include_affixes from the non-existent transport. Now it
1956 just assumes that the setting of that option is false. This bug was
1957 introduced by 4.51/PH/31.
1958
59cf8544
PH
1959PH/28 Changed -d+all to exclude +memory, because that information is very
1960 rarely of interest, but it makes the output a lot bigger. People tend to
1961 do -d+all out of habit.
1962
e7ad8a65
PH
1963PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1964 code in os-type was giving problems when libc.so lives in lib64, like on
1965 x86_64 Fedora Core.
1966
ade42478
PH
1967PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1968 aren't the modern standard, and it seems that some systems' include files
1969 don't always have them. Exim was already checking for some of the newer
1970 ones like T_AAAA, and defining it itself. I've added checks for all the
1971 record types that Exim uses.
1972
182ad5cf
PH
1973PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1974 not automatically generating a new one, as it is supposed to. This
1975 prevented TLS from working. If the file did exist, but contained invalid
1976 data, a new version was generated, as expected. It was only the case of a
1977 non-existent file that was broken.
1978
b0d9fc80
TK
1979TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1980 with a change in libdomainkeys > 0.64.
1981
1982TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1983 from DNS. If the selector record carries the flag, it now has
1984 precedence over the domain-wide flag.
1985
1986TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1987
47c7a64a
PH
1988PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1989 the use of a port name that isn't defined in /etc/services) occurred, the
1990 message was deferred as in a normal delivery, and thus remained on the
1991 spool, instead of being failed because of the mua_wrapper setting. This
1992 is now fixed, and I tidied up some of the mua_wrapper messages at the
1993 same time.
1994
a388bce4
SC
1995SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1996 the messages in a hash of arrays rather than using individual hashes.
1997 This is a bit cleaner and results in dramatic memory savings, albeit
1998 at a slight CPU cost.
1999
2000SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
2001 as requested by Marc Sherman.
2002
2003SC/10 Eximstats: added histograms for user specified patterns as requested
2004 by Marc Sherman.
2005
0793e4ed
SC
2006SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
2007
c58b88df
PH
2008PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
2009 fopen() in the content-scanning modules that did not already have it.
2010
e7ad8a65 2011
7982096b
PH
2012Exim version 4.51
2013-----------------
2014
1a46a8c5
PH
2015TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
2016 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
2017
2f079f46 2018TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
2019
2020TK/03 Fix ACL "regex" condition not being available in MIME ACL.
2021
2022PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
2023 to test Sieve filters that use "vacation".
2024
2025PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
2026 that changes the way the GnuTLS parameters are stored in the cache file.
2027 The new format can be generated externally. For backward compatibility,
2028 if the data in the cache doesn't make sense, Exim assumes it has read an
2029 old-format file, and it generates new data and writes a new file. This
2030 means that you can't go back to an older release without removing the
2031 file.
2032
2033PH/03 A redirect router that has both "unseen" and "one_time" set does not
2034 work if there are any delivery delays because "one_time" forces the
2035 parent to be marked "delivered", so its unseen clone is never tried
2036 again. For this reason, Exim now forbids the simultaneous setting of
2037 these two options.
2038
2039PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
2040 redirected to themselves ("homonym" addresses). Read the long ChangeLog
2041 entry if you want to know the details. The fix, however, neglected to
2042 consider the case when local delivery batching is involved. The test for
2043 "previously delivered" was not happening when checking to see if an
2044 address could be batched with a previous (undelivered) one; under
2045 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 2046 address.
1a46a8c5
PH
2047
2048PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
2049 in its include files, and this causes problems building Exim.
2050
2051PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
2052 header_syntax) but Exim was just ignoring anything given after a slash.
2053 In particular, this caused confusion with an attempt to use "verify =
2054 reverse_host_lookup/defer_ok". An error is now given when options are
2055 supplied for verify items that do not have them. (Maybe reverse_host_
2056 lookup should have a defer_ok option, but that's a different point.)
2057
2058PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
2059 defined by RFC 821) to 2048, because there were problems with some AUTH
2060 commands, and RFC 1869 says the size should be increased for extended
2061 SMTP commands that take arguments.
2062
2063PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
2064 Finch).
2065
2066PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
2067 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 2068
49c2d5ea
PH
2069PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
2070 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
2071 whatever). Otherwise the password may appear in the log. Following change
2072 PH/42 below, there is no longer a chance of it appearing in a bounce
2073 message.
49c2d5ea 2074
bf759a8b
PH
2075PH/11 Installed exipick version 20050225.0 from John Jetmore.
2076
83364d30
PH
2077PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2078 of its addresses was ever tried. (Bugzilla bug #2.)
2079
7999bbd7
PH
2080PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2081 the result incorrectly in the debug output. (It correctly added a newline
2082 to what was transported.)
2083
7dbf77c9
PH
2084TF/01 Added $received_time.
2085
74e0617f
PH
2086PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2087 commented out examples of how to interface to a virus scanner and to
2088 SpamAssassin. Also added commented examples of av_scanner and
2089 spamd_address settings.
2090
2f079f46
PH
2091PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2092 and controls are allowed in which ACLs. There were a couple of minor
2093 errors. Some of the entries in the conditions table (which is a table of
2094 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2095 negation of where the condition IS allowed.
2096
8c841523
PH
2097PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2098
7766a4f0
PH
2099PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2100 header file does not have a version number, so I've had to invent a new
2101 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2102 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2103 radiusclient), but it was contributed by a Radius user.
2104
8b417f2c
PH
2105PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2106 files or directories, for OpenSSL.
2107
901f42cb
PH
2108PH/19 When an Exim process that is running as root has to create an Exim log
2109 file, it does so in a subprocess that runs as exim:exim so as to get the
2110 ownership right at creation (otherwise, other Exim processes might see
2111 the file with the wrong ownership). There was no test for failure of this
2112 fork() call, which would lead to the process getting stuck as it waited
2113 for a non-existent subprocess. Forks do occasionally fail when resources
2114 run out. I reviewed all the other calls to fork(); they all seem to check
2115 for failure.
2116
f9b9210e
PH
2117PH/20 When checking for unexpected SMTP input at connect time (before writing
2118 the banner), Exim was not dealing correctly with a non-positive return
2119 from the read() function. If the client had disconnected by this time,
2120 the result was a log entry for a synchronization error with an empty
2121 string after "input=" when read() returned zero. If read() returned -1
2122 (an event I could not check), uninitialized data bytes were printed.
2123 There were reports of junk text (parts of files, etc) appearing after
2124 "input=".
2125
54cdb463
PH
2126PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2127
cf00dad6
PH
2128PH/22 Added support for macro redefinition, and (re)definition in between
2129 driver and ACL definitions.
2130
acb1b346
PH
2131PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2132 forgetting to use the resulting value; it was using the unexpanded value.
2133
c5ddb310
PH
2134PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2135 hadn't been configured. The fix is from Juergen Kreileder, who
2136 understands it better than I do:
2137
2138 "Here's what I see happening with three configured cyrus_sasl
2139 authenticators configured (plain, login, cram-md5):
2140
2141 On startup auth_cyrus_sasl_init() gets called for each of these.
2142 This means three calls to sasl_listmech() without a specified mech_list.
2143 => SASL tests which mechs of all available mechs actually work
2144 => three warnings about OTP not working
2145 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2146
2147 With the patch, sasl_listmech() also gets called three times. But now
2148 SASL's mech_list option is set to the server_mech specified in the the
2149 authenticator. Or in other words, the answer from sasl_listmech()
2150 gets limited to just the mech you're testing for (which is different
2151 for each call.)
2152 => the return list contains just 'plain' or 'login', 'cram-md5' or
2153 nothing depending on the value of ob->server_mech.
2154
2155 I've just tested the patch: Authentication still works fine,
2156 unavailable mechs specified in the exim configuration are still
2157 caught, and the auth.log warnings about OTP are gone."
2158
31619da6
PH
2159PH/25 When debugging is enabled, the contents of the command line are added
2160 to the debugging output, even when log_selector=+arguments is not
2161 specified.
2162
bebaf0fc
PH
2163PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2164 answer is "GNU", and only if the return is "GNU/something" is the answer
2165 "Linux".
2166
475fe28a
PH
2167PH/27 $acl_verify_message is now set immediately after the failure of a
2168 verification in an ACL, and so is available in subsequent modifiers. In
2169 particular, the message can be preserved by coding like this:
2170
2171 warn !verify = sender
2172 set acl_m0 = $acl_verify_message
2173
2174 Previously, $acl_verify_message was set only while expanding "message"
2175 and "log_message" when a very denied access.
2176
7e8bec7a
PH
2177PH/28 Modified OS/os.c-Linux with
2178
2179 -#ifndef OS_LOAD_AVERAGE
2180 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2181
2182 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2183 nomenclature these days.)
2184
e4a89c47
PH
2185PH/29 Installed patch from the Sieve maintainer that adds the options
2186 sieve_useraddress and sieve_subaddress to the redirect router.
2187
5ca2a9a1
PH
2188PH/30 In these circumstances:
2189 . Two addresses routed to the same list of hosts;
2190 . First host does not offer TLS;
2191 . First host accepts first address;
2192 . First host gives temporary error to second address;
2193 . Second host offers TLS and a TLS session is established;
2194 . Second host accepts second address.
2195 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2196 and peerdn, if requested) that were in fact used only for the second
2197 address.
7e8bec7a 2198
c688b954
PH
2199PH/31 When doing a callout as part of verifying an address, Exim was not paying
2200 attention to any local part prefix or suffix that was matched by the
2201 router that accepted the address. It now behaves in the same way as it
2202 does for delivery: the affixes are removed from the local part unless
2203 rcpt_include_affixes is set on the transport.
2204
fed77020
PH
2205PH/32 Add the sender address, as F=<...>, to the log line when logging a
2206 timeout during the DATA phase of an incoming message.
2207
7fe1560f
PH
2208PH/33 Sieve envelope tests were broken for match types other than :is. I have
2209 applied a patch sanctioned by the Sieve maintainer.
c688b954 2210
ebb6e6d5
PH
2211PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2212 the uid or gid is negative. A case of a negative gid caused this to be
2213 noticed. The fix allows for either to be negative.
2214
9c4e8f60
PH
2215PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2216 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2217 overlooked.
2218
2219PH/36 The change PH/12 above was broken. Fixed it.
2220
d7174846
PH
2221PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2222 the grounds that routing the same address twice would always produce the
2223 same answer. This might have been true once, but it is certainly no
2224 longer true now. Routing a child address may depend on the previous
2225 routing that produced that child. Some complicated redirection strategies
2226 went wrong when messages had multiple recipients, and made Exim's
2227 behaviour dependent on the order in which the addresses were given.
2228
2229 I have moved the duplicate checking until after the routing is complete.
2230 Exim scans the addresses that are assigned to local and remote
2231 transports, and removes any duplicates. This means that more work will be
2232 done, as duplicates will always all be routed, but duplicates are
2233 presumably rare, so I don't expect this is of any significance.
2234
2235 For deliveries to pipes, files, and autoreplies, the duplicate checking
2236 still happens during the routing process, since they are not going to be
2237 routed further.
2238
cfe75fc3
PH
2239PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2240 It corrects a timeout issue with spamd. This is Ian's comment: "The
2241 background is that sometimes spamd either never reads data from a
2242 connection it has accepted, or it never writes response data. The exiscan
2243 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2244 blindly assumes that writes won't block so it may never time out."
2245
be22d70e
PH
2246PH/39 Allow G after quota size as well as K and M.
2247
0612b098
PH
2248PH/40 The value set for $authenticated_id in an authenticator may not contain
2249 binary zeroes or newlines because the value is written to log lines and
2250 to spool files. There was no check on this. Now the value is run through
2251 the string_printing() function so that such characters are converted to
2252 printable escape sequences.
2253
2e0c1448
PH
2254PH/41 $message_linecount is a new variable that contains the total number of
2255 lines in the message. Compare $body_linecount, which is the count for the
2256 body only.
2257
447d236c
PH
2258PH/42 Exim no longer gives details of delivery errors for specific addresses in
2259 bounce and delay warning messages, except in certain special cases, which
2260 are as follows:
2261
2262 (a) An SMTP error message from a remote host;
2263 (b) A message specified in a :fail: redirection;
2264 (c) A message specified in a "fail" command in a system filter;
2265 (d) A message specified in a FAIL return from the queryprogram router;
2266 (e) A message specified by the cannot_route_message router option.
2267
2268 In these cases only, Exim does include the error details in bounce and
2269 warning messages. There are also a few cases where bland messages such
2270 as "unrouteable address" or "local delivery error" are given.
2271
d20976dc
PH
2272PH/43 $value is now also set for the "else" part of a ${run expansion.
2273
f656d135
PH
2274PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2275 being worked on, but at least Exim now implements the latest version to
2276 play with."
2277
2e2a30b4
PH
2278PH/45 In a pipe transport, although a timeout while waiting for the pipe
2279 process to complete was treated as a delivery failure, a timeout while
2280 writing the message to the pipe was logged, but erroneously treated as a
2281 successful delivery. Such timeouts include transport filter timeouts. For
2282 consistency with the overall process timeout, these timeouts are now
2283 treated as errors, giving rise to delivery failures by default. However,
2284 there is now a new Boolean option for the pipe transport called
2285 timeout_defer, which, if set TRUE, converts the failures into defers for
2286 both kinds of timeout. A transport filter timeout is now identified in
2287 the log output.
2288
9176e9f0
PH
2289PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2290 systems where "make" and "gmake" are different, calling "gmake" at top
2291 level broke things. I've arranged for the value of $(MAKE) to be passed
2292 from the Makefile to this script so that it can call the same version of
2293 "make".
2294
7982096b 2295
bbe902f0
PH
2296A note about Exim versions 4.44 and 4.50
2297----------------------------------------
2298
2299Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2300changes of various kinds. As a consequence, a big documentation update was
2301needed. This delayed the release for rather longer than seemed good, especially
2302in the light of a couple of (minor) security issues. Therefore, the changes
2303that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2304release. So 4.44 and 4.50 are in effect two different branches that both start
2305from 4.43.
2306
2307I have left the 4.50 change log unchanged; it contains all the changes since
23084.43. The change log for 4.44 is below; many of its items are identical to
2309those for 4.50. This seems to be the most sensible way to preserve the
2310historical information.
2311
2312
f7b63901 2313Exim version 4.50
495ae4b0
PH
2314-----------------
2315
5fe762f6
PH
2316 1. Minor wording change to the doc/README.SIEVE file.
2317
139059f6 2318 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2319 computation of the current number of files was incorrect.
495ae4b0 2320
7086e875
PH
2321 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2322 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2323 place.
2324
35af9f61
PH
2325 4. Give more explanation in the error message when the command for a transport
2326 filter fails to execute.
2327
b668c215
PH
2328 5. There are several places where Exim runs a non-Exim command in a
2329 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2330 was being done only for the command run by the queryprogram router. It is
2331 now done for all such subprocesses. The other cases are: ${run, transport
2332 filters, and the commands run by the lmtp and pipe transports.
2333
a494b1e1
PH
2334 6. Added CONFIGURE_GROUP build-time option.
2335
2336 7. Some older OS have a limit of 256 on the maximum number of file
2337 descriptors. Exim was using setrlimit() to set 1000 as a large value
2338 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2339 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2340
c5fcb476
PH
2341 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2342 was an oversight, and furthermore, ever since the addition of extra
2343 controls (e.g. 4.43/32), the checks on when to allow different forms of
2344 "control" were broken. There should now be diagnostics for all cases when a
2345 control that does not make sense is encountered.
2346
69358f02
PH
2347 9. Added the /retain_sender option to "control=submission".
2348
5be20824
PH
234910. $recipients is now available in the predata ACL (oversight).
2350
eb2c0248
PH
235111. Tidy the search cache before the fork to do a delivery from a message
2352 received from the command line. Otherwise the child will trigger a lookup
2353 failure and thereby defer the delivery if it tries to use (for example) a
2354 cached ldap connection that the parent has called unbind on.
2355
2a3eea10
PH
235612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2357 of $address_data from the recipient verification was clobbered by the
2358 sender verification.
2359
236013. The value of address_data from a sender verification is now available in
2361 $sender_address_data in subsequent conditions in the ACL statement.
2362
23c7ff99
PH
236314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2364
4deaf07d
PH
236515. Added a new option "connect=<time>" to callout options, to set a different
2366 connection timeout.
2367
926e1192
PH
236816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2369 was its contents. (It was OK if the option was not defined at all.)
2370
650edc6f
PH
237117. A "Completed" log line is now written for messages that are removed from
2372 the spool by the -Mrm option.
2373
2c7db3f5
PH
237418. New variables $sender_verify_failure and $recipient_verify_failure contain
2375 information about exactly what failed.
2376
3d235903
PH
237719. Added -dd to debug only the daemon process.
2378
7c7ad977
PH
237920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2380 handles timeouts, both on the server side and network timeouts. Renamed the
2381 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2382
981756db
PH
238321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2384 It is now set to "smtps".
2385
d4eb88df
PH
238622. $host_address is now set to the target address during the checking of
2387 ignore_target_hosts.
2388
238923. When checking ignore_target_hosts for an ipliteral router, no host name was
2390 being passed; this would have caused $sender_host_name to have been used if
2391 matching the list had actually called for a host name (not very likely,
2392 since this list is usually IP addresses). A host name is now passed as
2393 "[x.x.x.x]".
2394
7d468ab8
PH
239524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2396 code that specifies a non-restarting handler (typically sigaction() in
2397 modern systems) in an attempt to fix a rare and obscure crash bug.
2398
239925. Narrowed the window for a race in the daemon that could cause it to ignore
2400 SIGCHLD signals. This is not a major problem, because they are used only to
2401 wake it up if nothing else does.
2402
62c0818f
PH
240326. A malformed maildirsize file could cause Exim to calculate negative values
2404 for the mailbox size or file count. Odd effects could occur as a result.
2405 The maildirsize information is now recalculated if the size or filecount
2406 end up negative.
2407
26034054
PH
240827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2409 support for a long time. Removed HAVE_SYS_VFS_H.
2410
af66f652
PH
241128. Installed the latest version of exipick from John Jetmore.
2412
90af77f4
PH
241329. In an address list, if the pattern was not a regular expression, an empty
2414 subject address (from a bounce message) matched only if the pattern was an
2415 empty string. Non-empty patterns were not even tested. This was the wrong
2416 because it is perfectly reasonable to use an empty address as part of a
2417 database query. An empty address is now tested by patterns that are
2418 lookups. However, all the other forms of pattern expect the subject to
2419 contain a local part and a domain, and therefore, for them, an empty
2420 address still always fails if the pattern is not itself empty.
2421
d8ef3577
PH
242230. Exim went into a mad DNS loop when attempting to do a callout where the
2423 host was specified on an smtp transport, and looking it up yielded more
2424 than one IP address.
2425
5cb8cbc6
PH
242631. Re-factored the code for checking spool and log partition space into a
2427 function that finds that data and another that does the check. The former
2428 is then used to implement four new variables: $spool_space, $log_space,
2429 $spool_inodes, and $log_inodes.
2430
14702f5b
PH
243132. The RFC2047 encoding function was originally intended for short strings
2432 such as real names; it was not keeping to the 75-character limit for
2433 encoded words that the RFC imposes. It now respects the limit, and
2434 generates multiple encoded words if necessary. To be on the safe side, I
2435 have increased the buffer size for the ${rfc2047: expansion operator from
2436 1024 to 2048 bytes.
2437
063b1e99
PH
243833. It is now permitted to omit both strings after an "if" condition; if the
2439 condition is true, the result is "true". As before, when the second string
2440 is omitted, a false condition yields an empty string. This makes it less
2441 cumbersome to write custom ACL and router conditions.
2442
652e1b65
PH
244334. Failure to deliver a bounce message always caused it to be frozen, even if
2444 there was an errors_to setting on the router. The errors_to setting is now
2445 respected.
2446
6f0c9a4f
PH
244735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2448 canonical form (fully expanded) before being placed in
2449 $sender_host_address.
2450
33397d19
PH
245136. The table in the code that translates DNS record types into text (T_A to
2452 "A" for instance) was missing entries for NS and CNAME. It is just possible
2453 that this could have caused confusion if both these types were looked up
2454 for the same domain, because the text type is used as part of Exim's
2455 per-process caching. But the chance of anyone hitting this buglet seems
2456 very small.
2457
7bb56e1f
PH
245837. The dnsdb lookup has been extended in a number of ways.
2459
2460 (1) There is a new type, "zns", which walks up the domain tree until it
2461 finds some nameserver records. It should be used with care.
2462
ea3bc19b
PH
2463 (2) There is a new type, "mxh", which is like "mx" except that it returns
2464 just the host names, not the priorities.
2465
2466 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2467 looked up. The behaviour when one of the lookups defers can be
2468 controlled by a keyword.
7bb56e1f 2469
ea3bc19b 2470 (4) It is now possible to specify the separator character for use when
7bb56e1f 2471 multiple records are returned.
33397d19 2472
0bcb2a0e
PH
247338. The dnslists ACL condition has been extended: it is now possible to supply
2474 a list of IP addresses and/or domains to be looked up in a particular DNS
2475 domain.
2476
2ac0e484
PH
247739. Added log_selector=+queue_time_overall.
2478
4e1fde53
PH
247940. When running the queue in the test harness, wait just a tad after forking a
2480 delivery process, to get repeatability of debugging output.
2481
de365ded
PH
248241. Include certificate and key file names in error message when GnuTLS fails
2483 to set them up, because the GnuTLS error message doesn't include the name
2484 of the failing file when there is a problem reading it.
2485
f05da2e8
PH
248642. Allow both -bf and -bF in the same test run.
2487
d6453af2
PH
248843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2489
f7b63901
PH
249044. The "Exiscan patch" is now merged into the mainline Exim source.
2491
249245. Sometimes the final signoff response after QUIT could fail to get
2493 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2494 < 0 before doing a fflush(). This bug looks as though it goes back to the
2495 introduction of TLS in release 3.20, but "sometimes" must have been rare
2496 because the tests only now provoked it.
2497
a444213a
PH
249846. Reset the locale to "C" after calling embedded Perl, in case it was changed
2499 (this can affect the format of dates).
2500
0ec020ea
PH
250147. exim_tidydb, when checking for the continued existence of a message for
2502 which it has found a message-specific retry record, was not finding
2503 messages that were in split spool directories. Consequently, it was
2504 deleting retry records that should have stayed in existence.
2505
b1206957
PH
250648. Steve fixed some bugs in eximstats.
2507
250849. The SPA authentication driver was not abandoning authentication and moving
2509 on to the next authenticator when an expansion was forced to fail,
2510 contradicting the general specification for all authenticators. Instead it
2511 was generating a temporary error. It now behaves as specified.
2512
26dd5a95
PH
251350. The default ordering of permitted cipher suites for GnuTLS was pessimal
2514 (the order specifies the preference for clients). The order is now AES256,
2515 AES128, 3DES, ARCFOUR128.
2516
343b2385
PH
251751. Small patch to Sieve code - explicitly set From: when generating an
2518 autoreply.
2519
1c5466b9
PH
252052. Exim crashed if a remote delivery caused a very long error message to be
2521 recorded - for instance if somebody sent an entire SpamAssassin report back
2522 as a large number of 550 error lines. This bug was coincidentally fixed by
2523 increasing the size of one of Exim's internal buffers (big_buffer) that
2524 happened as part of the Exiscan merge. However, to be on the safe side, I
2525 have made the code more robust (and fixed the comments that describe what
2526 is going on).
2527
55ee9ee3
PH
252853. Now that there can be additional text after "Completed" in log lines (if
2529 the queue_time_overall log selector is set), a one-byte patch to exigrep
2530 was needed to allow it to recognize "Completed" as not the last thing in
2531 the line.
2532
d38f8232
PH
253354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2534 patch that reportedly fixes this has been added. I am not expert enough to
2535 create a test for it. This is what the patch creator wrote:
2536
2537 "I found a little strange behaviour of ldap code when working with
2538 Windows 2003 AD Domain, where users was placed in more than one
2539 Organization Units. When I tried to give exim partial DN, the exit code
2540 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2541 But simultaneously result of request was absolutely normal ldap result,
2542 so I produce this patch..."
2543
3295e65b
PH
2544 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2545 REFERENCE, so I have modified the code to exclude the patch when that macro
2546 is not defined.
2547
7102e136
PH
254855. Some experimental protocols are using DNS PTR records for new purposes. The
2549 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2550 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2551 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2552 CAN-2005-0021
7102e136 2553
3ca0ba97
PH
255456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2555
c2bcbe20
PH
255657. Double the size of the debug message buffer (to 2048) so that more of very
2557 long debug lines gets shown.
2558
18ce445d
PH
255958. The exicyclog utility now does better if the number of log files to keep
2560 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2561
1f5b4c3d
PH
256259. Two changes related to the smtp_active_hostname option:
2563
2564 (1) $smtp_active_hostname is now available as a variable.
2565 (2) The default for smtp_banner uses $smtp_active_hostname instead
2566 of $primary_hostname.
2567
b975ba52
PH
256860. The host_aton() function is supposed to be passed a string that is known
2569 to be a valid IP address. However, in the case of IPv6 addresses, it was
2570 not checking this. This is a hostage to fortune. Exim now panics and dies
2571 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2572 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2573 components; fortuitously, this particular loophole had already been fixed
2574 by change 4.50/55 above.
2575
2576 If there are any other similar loopholes, the new check in host_aton()
2577 itself should stop them being exploited. The report I received stated that
2578 data on the command line could provoke the exploit when Exim was running as
2579 exim, but did not say which command line option was involved. All I could
2580 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2581 running as the user.
ea3a6f44 2582 CAN-2005-0021
85b87bc2
PH
2583
258461. There was a buffer overflow vulnerability in the SPA authentication code
2585 (which came originally from the Samba project). I have added a test to the
2586 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2587 CAN-2005-0022
b975ba52 2588
17ffcae7
PH
258962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2590 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2591
d95f9fdb
PH
259263. The daemon start-up calls getloadavg() while still root for those OS that
2593 need the first call to be done as root, but it missed one case: when
2594 deliver_queue_load_max is set with deliver_drop_privilege. This is
2595 necessary for the benefit of the queue runner, because there is no re-exec
2596 when deliver_drop_privilege is set.
2597
86b8287f
PH
259864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2599 This has been fixed.
2600
60dc5e56
PH
260165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2602 was in use, was not putting the data itself into the right store pool;
2603 consequently, it could be overwritten for a subsequent message in the same
2604 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2605 the caching.)
2606
533244af
PH
260766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2608
a5a28604
PH
260967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2610 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2611 the function were treating the return as a boolean value, which happened to
2612 work because 0=false and not-0=true, but is not correct code.
2613
7e634d24
PH
261468. The host_aton() function was not handling scoped IPv6 addresses (those
2615 with, for example, "%eth0" on the end) correctly.
2616
3e11c26b
PH
261769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2618 negated items (that is, ~something) in unsigned ints. Some compilers
2619 apparently mutter when there is no cast.
2620
6729cf78
PH
262170. If an address verification called from an ACL failed, and did not produce a
2622 user-specific message (i.e. there was only a "system" message), nothing was
2623 put in $acl_verify_message. In this situation, it now puts the system
2624 message there.
2625
00f00ca5
PH
262671. Change 4.23/11 added synchronization checking at the start of an SMTP
2627 session; change 4.31/43 added the unwanted input to the log line - except
2628 that it did not do this in the start of session case. It now does.
2629
c9bdd01c
PH
263072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2631 This is wrong and can cause the other end to generate a synchronization
2632 error if it is another Exim or anything else that does the synchronization
2633 check. A QUIT command is no longer sent after a timeout.
2634
d43194df
PH
263573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2636 during host lookups.
2637
fe5b5d0b
PH
263874. The defer_ok option of callout verification was not working if it was used
2639 when verifying addresses in header lines, that is, for this case:
2640
2641 verify = header_sender/callout=defer_ok
2642
76a2d7ba
PH
264375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2644 those file descriptors could be used for SMTP connections. If anything
2645 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2646 could be sent to the SMTP client, causing chaos. The daemon now opens
2647 stdin, stdout, and stderr to /dev/null when it puts itself into the
2648 background.
2649
265076. Arrange for output from Perl's "warn" command to be written to Exim's main
2651 log by default. The user can override this with suitable Perl magic.
2652
04f7d5b9
PH
265377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2654 the log message when discard triggers, was not working for the DATA ACL or
2655 for the non-SMTP ACL.
2656
bc60667e
PH
265778. Error message wording change in sieve.c.
2658
bb6e88ff
PH
265979. If smtp_accept_max_per_host was set, the number of connections could be
2660 restricted to fewer than expected, because the daemon was trying to set up
2661 a new connection before checking whether the processes handling previous
2662 connections had finished. The check for completed processes is now done
2663 earlier. On busy systems, this bug wouldn't be noticed because something
2664 else would have woken the daemon, and it would have reaped the completed
2665 process earlier.
2666
1e70f85b
PH
266780. If a message was submitted locally by a user whose login name contained one
2668 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2669 It caused a spool format error. I have fixed the spool reading code. A
2670 related problem was that the "from" clause in the Received: line became
2671 illegal because of the space(s). It is now covered by ${quote_local_part.
2672
267381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2674 tables).
2675
4e01f9d6
PH
267682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2677
1ee1cef2
PH
267883. Patch from Sieve maintainer to fix unterminated string problem in
2679 "vacation" handling.
2680
6e2b4ccc
PH
268184. Some minor changes to the Linux configuration files to help with other
2682 OS variants using glibc.
2683
8e669ac1
PH
268485. One more patch for Sieve to update vacation handling to latest spec.
2685
495ae4b0 2686
bbe902f0
PH
2687----------------------------------------------------
2688See the note above about the 4.44 and 4.50 releases.
2689----------------------------------------------------
2690
2691
2692Exim version 4.44
2693-----------------
2694
2695 1. Change 4.43/35 introduced a bug that caused file counts to be
2696 incorrectly computed when quota_filecount was set in an appendfile
2697 transport
2698
2699 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2700 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2701 place.
2702
2703 3. Give more explanation in the error message when the command for a transport
2704 filter fails to execute.
2705
2706 4. There are several places where Exim runs a non-Exim command in a
2707 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2708 was being done only for the command run by the queryprogram router. It is
2709 now done for all such subprocesses. The other cases are: ${run, transport
2710 filters, and the commands run by the lmtp and pipe transports.
2711
2712 5. Some older OS have a limit of 256 on the maximum number of file
2713 descriptors. Exim was using setrlimit() to set 1000 as a large value
2714 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2715 systems. I've change it so that if it can't get 1000, it tries for 256.
2716
2717 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2718 was an oversight, and furthermore, ever since the addition of extra
2719 controls (e.g. 4.43/32), the checks on when to allow different forms of
2720 "control" were broken. There should now be diagnostics for all cases when a
2721 control that does not make sense is encountered.
2722
2723 7. $recipients is now available in the predata ACL (oversight).
2724
2725 8. Tidy the search cache before the fork to do a delivery from a message
2726 received from the command line. Otherwise the child will trigger a lookup
2727 failure and thereby defer the delivery if it tries to use (for example) a
2728 cached ldap connection that the parent has called unbind on.
2729
2730 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2731 of $address_data from the recipient verification was clobbered by the
2732 sender verification.
2733
273410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2735 was its contents. (It was OK if the option was not defined at all.)
2736
273711. A "Completed" log line is now written for messages that are removed from
2738 the spool by the -Mrm option.
2739
274012. $host_address is now set to the target address during the checking of
2741 ignore_target_hosts.
2742
274313. When checking ignore_target_hosts for an ipliteral router, no host name was
2744 being passed; this would have caused $sender_host_name to have been used if
2745 matching the list had actually called for a host name (not very likely,
2746 since this list is usually IP addresses). A host name is now passed as
2747 "[x.x.x.x]".
2748
274914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2750 code that specifies a non-restarting handler (typically sigaction() in
2751 modern systems) in an attempt to fix a rare and obscure crash bug.
2752
275315. Narrowed the window for a race in the daemon that could cause it to ignore
2754 SIGCHLD signals. This is not a major problem, because they are used only to
2755 wake it up if nothing else does.
2756
275716. A malformed maildirsize file could cause Exim to calculate negative values
2758 for the mailbox size or file count. Odd effects could occur as a result.
2759 The maildirsize information is now recalculated if the size or filecount
2760 end up negative.
2761
276217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2763 support for a long time. Removed HAVE_SYS_VFS_H.
2764
ea3a6f44 276518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2766
276719. Allow an empty sender to be matched against a lookup in an address list.
2768 Previously the only cases considered were a regular expression, or an
2769 empty pattern.
2770
277120. Exim went into a mad DNS lookup loop when doing a callout where the
2772 host was specified on the transport, if the DNS lookup yielded more than
2773 one IP address.
2774
ea3a6f44
NM
277521. The RFC2047 encoding function was originally intended for short strings
2776 such as real names; it was not keeping to the 75-character limit for
2777 encoded words that the RFC imposes. It now respects the limit, and
2778 generates multiple encoded words if necessary. To be on the safe side, I
2779 have increased the buffer size for the ${rfc2047: expansion operator from
2780 1024 to 2048 bytes.
bbe902f0 2781
ea3a6f44
NM
278222. Failure to deliver a bounce message always caused it to be frozen, even if
2783 there was an errors_to setting on the router. The errors_to setting is now
2784 respected.
bbe902f0
PH
2785
278623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2787 canonical form (fully expanded) before being placed in
2788 $sender_host_address.
2789
279024. Updated eximstats to version 1.33
2791
ea3a6f44
NM
279225. Include certificate and key file names in error message when GnuTLS fails
2793 to set them up, because the GnuTLS error message doesn't include the name
2794 of the failing file when there is a problem reading it.
bbe902f0
PH
2795
279626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2797 As per change 25.
bbe902f0 2798
ea3a6f44
NM
279927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2800 (this can affect the format of dates).
bbe902f0 2801
ea3a6f44
NM
280228. exim_tidydb, when checking for the continued existence of a message for
2803 which it has found a message-specific retry record, was not finding
2804 messages that were in split spool directories. Consequently, it was
2805 deleting retry records that should have stayed in existence.
bbe902f0
PH
2806
280729. eximstats updated to version 1.35
2808 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2809 1.35 - bugfix such that pie charts by volume are generated correctly
2810
ea3a6f44
NM
281130. The SPA authentication driver was not abandoning authentication and moving
2812 on to the next authenticator when an expansion was forced to fail,
2813 contradicting the general specification for all authenticators. Instead it
2814 was generating a temporary error. It now behaves as specified.
bbe902f0 2815
ea3a6f44
NM
281631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2817 (the order specifies the preference for clients). The order is now AES256,
2818 AES128, 3DES, ARCFOUR128.
bbe902f0 2819
ea3a6f44
NM
282031. Small patch to Sieve code - explicitly set From: when generating an
2821 autoreply.
bbe902f0 2822
ea3a6f44
NM
282332. Exim crashed if a remote delivery caused a very long error message to be
2824 recorded - for instance if somebody sent an entire SpamAssassin report back
2825 as a large number of 550 error lines. This bug was coincidentally fixed by
2826 increasing the size of one of Exim's internal buffers (big_buffer) that
2827 happened as part of the Exiscan merge. However, to be on the safe side, I
2828 have made the code more robust (and fixed the comments that describe what
2829 is going on).
bbe902f0 2830
ea3a6f44
NM
283133. Some experimental protocols are using DNS PTR records for new purposes. The
2832 keys for these records are domain names, not reversed IP addresses. The
2833 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2834 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2835 CAN-2005-0021
2836
ea3a6f44
NM
283734. The host_aton() function is supposed to be passed a string that is known
2838 to be a valid IP address. However, in the case of IPv6 addresses, it was
2839 not checking this. This is a hostage to fortune. Exim now panics and dies
2840 if the condition is not met. A case was found where this could be provoked
2841 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2842 components; fortuitously, this particular loophole had already been fixed
2843 by change 4.50/55 or 4.44/33 above.
2844
2845 If there are any other similar loopholes, the new check in host_aton()
2846 itself should stop them being exploited. The report I received stated that
2847 data on the command line could provoke the exploit when Exim was running as
2848 exim, but did not say which command line option was involved. All I could
2849 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2850 running as the user.
bbe902f0
PH
2851 CAN-2005-0021
2852
ea3a6f44
NM
285335. There was a buffer overflow vulnerability in the SPA authentication code
2854 (which came originally from the Samba project). I have added a test to the
2855 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2856 CAN-2005-0022
2857
ea3a6f44
NM
285836. The daemon start-up calls getloadavg() while still root for those OS that
2859 need the first call to be done as root, but it missed one case: when
2860 deliver_queue_load_max is set with deliver_drop_privilege. This is
2861 necessary for the benefit of the queue runner, because there is no re-exec
2862 when deliver_drop_privilege is set.
bbe902f0 2863
ea3a6f44
NM
286437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2865 was in use, was not putting the data itself into the right store pool;
2866 consequently, it could be overwritten for a subsequent message in the same
2867 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2868 the caching.)
bbe902f0 2869
ea3a6f44
NM
287038. Sometimes the final signoff response after QUIT could fail to get
2871 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2872 < 0 before doing a fflush(). This bug looks as though it goes back to the
2873 introduction of TLS in release 3.20, but "sometimes" must have been rare
2874 because the tests only now provoked it.
bbe902f0
PH
2875
2876
495ae4b0
PH
2877Exim version 4.43
2878-----------------
2879
2880 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2881 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2882 Now it returns an integer. A number of calls were still expecting a T/F
2883 return. Fortuitously, in all cases, the tests worked in OK situations,
2884 which is the norm. However, things would have gone wrong on any write
2885 failures on the smtp file descriptor. This function is used when sending
2886 messages over SMTP and also when doing verify callouts.
2887
2888 2. When Exim is called to do synchronous delivery of a locally submitted
2889 message (the -odf or -odi options), it no longer closes stderr before doing
2890 the delivery.
2891
2892 3. Implemented the mua_wrapper option.
2893
2894 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2895
2896 5. Implemented the functions header_remove(), header_testname(),
2897 header_add_at_position(), and receive_remove_recipient(), and exported them
2898 to local_scan().
2899
2900 6. If an ACL "warn" statement specified the addition of headers, Exim already
2901 inserted X-ACL-Warn: at the start if there was no header name. However, it
2902 was not making this test for the second and subsequent header lines if
2903 there were newlines in the string. This meant that an invalid header could
2904 be inserted if Exim was badly configured.
2905
2906 7. Allow an ACL "warn" statement to add header lines at the start or after all
2907 the Received: headers, as well as at the end.
2908
2909 8. Added the rcpt_4xx retry error code.
2910
2911 9. Added postmaster_mailfrom=xxx to callout verification option.
2912
291310. Added mailfrom=xxxx to the callout verification option, for verify=
2914 header_sender only.
2915
291611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2917 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2918
291912. Inserted some casts to stop certain compilers warning when using pointer
2920 differences as field lengths or precisions in printf-type calls (mostly
2921 affecting debugging statements).
2922
292313. Added optional readline() support for -be (dynamically loaded).
2924
292514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2926 same clock tick as a message's arrival, so that its received time was the
2927 same as the "first fail" time on the retry record, and that message
2928 remained on the queue past the ultimate address timeout, every queue runner
2929 would try a delivery (because it was past the ultimate address timeout) but
2930 after another failure, the ultimate address timeout, which should have then
2931 bounced the address, did not kick in. This was a "< instead of <=" error;
2932 in most cases the first failure would have been in the next clock tick
2933 after the received time, and all would be well.
2934
293515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2936 being recognized when the domain list was tested by the match_domain
2937 condition in an expansion string.
2938
293916. Added the ${str2b64: operator.
2940
294117. Exim was always calling setrlimit() to set a large limit for the number of
2942 processes, without checking whether the existing limit was already
2943 adequate. (It did check for the limit on file descriptors.) Furthermore,
2944 errors from getrlimit() and setrlimit() were being ignored. Now they are
2945 logged to the main and panic logs, but Exim does carry on, to try to do its
2946 job under whatever limits there are.
2947
294818. Imported PCRE 5.0.
2949
295019. Trivial typo in log message " temporarily refused connection" (the leading
2951 space).
2952
295320. If the log selector return_path_on_delivery was set and an address was
2954 redirected to /dev/null, the delivery process crashed because it assumed
2955 that a return path would always be set for a "successful" delivery. In this
2956 case, the whole delivery is bypassed as an optimization, and therefore no
2957 return path is set.
2958
295921. Internal re-arrangement: the function for sending a challenge and reading
2960 a response while authentication was assuming a zero-terminated challenge
2961 string. It's now changed to take a pointer and a length, to allow for
2962 binary data in such strings.
2963
296422. Added the cyrus_sasl authenticator (code supplied by MBM).
2965
296623. Exim was not respecting finduser_retries when seeking the login of the
2967 uid under which it was called; it was always trying 10 times. (The default
2968 setting of finduser_retries is zero.) Also, it was sleeping after the final
2969 failure, which is pointless.
2970
297124. Implemented tls_on_connect_ports.
2972
297325. Implemented acl_smtp_predata.
2974
297526. If the domain in control=submission is set empty, Exim assumes that the
2976 authenticated id is a complete email address when it generates From: or
2977 Sender: header lines.
2978
297927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2980 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2981 chown and chgrp in /bin and hostname in /usr/bin.
2982
298328. Exim was keeping the "process log" file open after each use, just as it
2984 does for the main log. This opens the possibility of it remaining open for
2985 long periods when the USR1 signal hits a daemon. Occasional processlog
2986 errors were reported, that could have been caused by this. Anyway, it seems
2987 much more sensible not to leave this file open at all, so that is what now
2988 happens.
2989
299029. The long-running daemon process does not normally write to the log once it
2991 has entered its main loop, and it closes the log before doing so. This is
2992 so that log files can straightforwardly be renamed and moved. However,
2993 there are a couple of unusual error situations where the daemon does write
2994 log entries, and I had neglected to close the log afterwards.
2995
299630. The text of an SMTP error response that was received during a remote
2997 delivery was being truncated at 512 bytes. This is too short for some of
2998 the long messages that one sometimes sees. I've increased the limit to
2999 1024.
3000
300131. It is now possible to make retry rules that apply only when a message has a
3002 specific sender, in particular, an empty sender.
3003
300432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
3005 it possible to be selective about when SMTP synchronization is enforced.
3006
300733. Added "control = caseful_local_part" and "control = "caselower_local_part".
3008
300932. Implemented hosts_connection_nolog.
3010
301133. Added an ACL for QUIT.
3012
301334. Setting "delay_warning=" to disable warnings was not working; it gave a
3014 syntax error.
3015
301635. Added mailbox_size and mailbox_filecount to appendfile.
3017
301836. Added control = no_multiline_responses to ACLs.
3019
302037. There was a bug in the logic of the code that waits for the clock to tick
3021 in the case where the clock went backwards by a substantial amount such
3022 that the microsecond fraction of "now" was more than the microsecond
3023 fraction of "then" (but the whole seconds number was less).
3024
302538. Added support for the libradius Radius client library this is found on
3026 FreeBSD (previously only the radiusclient library was supported).
3027
3028
3029Exim version 4.42
3030-----------------
3031
3032 1. When certain lookups returned multiple values in the form name=value, the
3033 quoting of the values was not always being done properly. Specifically:
3034 (a) If the value started with a double quote, but contained no whitespace,
3035 it was not quoted.
3036 (b) If the value contained whitespace other than a space character (i.e.
3037 tabs or newlines or carriage returns) it was not quoted.
3038 This fix has been applied to the mysql and pgsql lookups by writing a
3039 separate quoting function and calling it from the lookup code. The fix
3040 should probably also be applied to nisplus, ibase and oracle lookups, but
3041 since I cannot test any of those, I have not disturbed their existing code.
3042
3043 2. A hit in the callout cache for a specific address caused a log line with no
3044 reason for rejecting RCPT. Now it says "Previous (cached) callout
3045 verification failure".
3046
3047 3. There was an off-by-one bug in the queryprogram router. An over-long
3048 return line was truncated at 256 instead of 255 characters, thereby
3049 overflowing its buffer with the terminating zero. As well as fixing this, I
3050 have increased the buffer size to 1024 (and made a note to document this).
3051
3052 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
3053 when Exim is waiting for an SMTP response from a remote server, Exim
3054 restarts its select() call on the socket, thereby resetting its timeout.
3055 This is not a problem when such interrupts are rare. Somebody set up a cron
3056 job to run exiwhat every 2 minutes, which is less than the normal select()
3057 timeout (5 or 10 minutes). This meant that the select() timeout never
3058 kicked in because it was always reset. I have fixed this by comparing the
3059 time when an interrupt arrives with the time at the start of the first call
3060 to select(). If more time than the timeout has elapsed, the interrupt is
3061 treated as a timeout.
3062
3063 5. Some internal re-factoring in preparation for the addition of Sieve
3064 extensions (by MH). In particular, the "personal" test is moved to a
3065 separate function, and given an option for scanning Cc: and Bcc: (which is
3066 not set for Exim filters).
3067
3068 6. When Exim created an email address using the login of the caller as the
3069 local part (e.g. when creating a From: or Sender: header line), it was not
3070 quoting the local part when it contained special characters such as @.
3071
3072 7. Installed new OpenBSD configuration files.
3073
3074 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3075 try to make them clearer.
3076
3077 9. Callout options, other than the timeout value, were being ignored when
3078 verifying sender addresses in header lines. For example, when using
3079
3080 verify = header_sender/callout=no_cache
3081
3082 the cache was (incorrectly) being used.
3083
308410. Added a missing instance of ${EXE} to the exim_install script; this affects
3085 only the Cygwin environment.
3086
308711. When return_path_on_delivery was set as a log selector, if different remote
3088 addresses in the same message used different return paths and parallel
3089 remote delivery occurred, the wrong values would sometimes be logged.
3090 (Whenever a remote delivery process finished, the return path value from
3091 the most recently started remote delivery process was logged.)
3092
309312. RFC 3848 specifies standard names for the "with" phrase in Received: header
3094 lines when AUTH and/or TLS are in use. This is the "received protocol"
3095 field. Exim used to use "asmtp" for authenticated SMTP, without any
3096 indication (in the protocol name) for TLS use. Now it follows the RFC and
3097 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3098 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3099 names appear in log lines as well as in Received: header lines.
3100
310113. Installed MH's patches for Sieve to add the "copy" and "vacation"
3102 extensions, and comparison tests, and to fix some bugs.
3103
310414. Changes to the "personal" filter test:
3105
3106 (1) The test was buggy in that it was just doing the equivalent of
3107 "contains" tests on header lines. For example, if a user's address was
3108 anne@some.where, the "personal" test would incorrectly be true for
3109
3110 To: susanne@some.where
3111
3112 This test is now done by extracting each address from the header in turn,
3113 and checking the entire address. Other tests that are part of "personal"
3114 are now done using regular expressions (for example, to check local parts
3115 of addresses in From: header lines).
3116
3117 (2) The list of non-personal local parts in From: addresses has been
3118 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3119 taken from the Sieve specification recommendations.
3120
3121 (3) If the message contains any header line starting with "List-" it is
3122 treated as non-personal.
3123
3124 (4) The test for "circular" in the Subject: header line has been removed
3125 because it now seems ill-conceived.
3126
312715. Minor typos in src/EDITME comments corrected.
3128
312916. Installed latest exipick from John Jetmore.
3130
313117. If headers_add on a router specified a text string that was too long for
3132 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3133 of string_sprintf() is now avoided.
3134
313518. $message_body_size was not set (it was always zero) when running the DATA
3136 ACL and the local_scan() function.
3137
313819. For the "mail" command in an Exim filter, no default was being set for
3139 the once_repeat time, causing a random time value to be used if "once" was
3140 specified. (If the value happened to be <= 0, no repeat happened.) The
3141 default is now 0s, meaning "never repeat". The "vacation" command was OK
3142 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3143 (I found it when inspecting the code).
3144
314520. There is now an overall timeout for performing a callout verification. It
3146 defaults to 4 times the callout timeout, which applies to individual SMTP
3147 commands during the callout. The overall timeout applies when there is more
3148 than one host that can be tried. The timeout is checked before trying the
3149 next host. This prevents very long delays if there are a large number of
3150 hosts and all are timing out (e.g. when the network connections are timing
3151 out). The value of the overall timeout can be changed by specifying an
3152 additional sub-option for "callout", called "maxwait". For example:
3153
3154 verify = sender/callout=5s,maxwait=20s
3155
315621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3157 to the end before writing, but this should make it even safer).
3158
315922. Exim was forgetting that it had advertised PIPELINING for the second and
3160 subsequent messages on an SMTP connection. It was also not resetting its
3161 memory on STARTTLS and an internal HELO.
3162
316323. When Exim logs an SMTP synchronization error within a session, it now
3164 records whether PIPELINING has been advertised or not.
3165
316624. Added 3 instances of "(long int)" casts to time_t variables that were being
3167 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3168 rather than long int.
3169
317025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3171
317226. Added the never_mail option to autoreply.
3173
3174
3175Exim version 4.41
3176-----------------
3177
3178 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3179 crash if the getsockname() call failed; this can happen if a connection is
3180 closed very soon after it is established. The problem was simply in the
3181 order in which certain operations were done, causing Exim to try to write
3182 to the SMTP stream before it had set up the file descriptor. The bug has
3183 been fixed by making things happen in the correct order.
3184
3185
3186Exim version 4.40
3187-----------------
3188
3189 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3190 before the connection was closed, thus losing the rejection response.
3191
3192 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3193 some early Solaris releases, but causes trouble in current releases where
3194 socklen_t is defined.
3195
3196 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3197 always exist.
3198
3199 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3200 configured.
3201
3202 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3203 that releasing the top of it at the end releases what was used for sub-
3204 expansions (unless the block got too big). However, discard this block if
3205 the first thing is a variable or header, so that we can use its block when
3206 it is dynamic (useful for very large $message_headers, for example).
3207
3208 6. Lookups now cache *every* query, not just the most recent. A new, separate
3209 store pool is used for this. It can be recovered when all lookup caches are
3210 flushed. Lookups now release memory at the end of their result strings.
3211 This has involved some general refactoring of the lookup sources.
3212
3213 7. Some code has been added to the store_xxx() functions to reduce the amount
3214 of flapping under certain conditions.
3215
3216 8. log_incoming_interface used to affect only the <= reception log lines. Now
3217 it causes the local interface and port to be added to several more SMTP log
3218 lines, for example "SMTP connection from", and rejection lines.
3219
3220 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3221
322210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3223
322411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3225 could be overwritten at the end of the current message (or the start of a
3226 new message if it was set in a HELO ACL). The value is now preserved for
3227 the duration of the SMTP connection.
3228
322912. If a transport had a headers_rewrite setting, and a matching header line
3230 contained an unqualified address, that address was qualified, even if it
3231 did not match any rewriting rules. The underlying bug was that the values
3232 of the flags that permit the existence of unqualified sender and recipient
3233 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3234 non-local messages, and by -bnq for local messages) were not being
3235 preserved with the message after it was received.
3236
323713. When Exim was logging an SMTP synchronization error, it could sometimes log
3238 "next input=" as part of the text comprising the host identity instead of
3239 the correct text. The code was using the same buffer for two different
3240 strings. However, depending on which order the printing function evaluated
3241 its arguments, the bug did not always show up. Under Linux, for example, my
3242 test suite worked just fine.
3243
324414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3245 doesn't work with some older versions of Perl. It has been changed to "my",
3246 which in any case is probably the better facility to use.
3247
324815. A really picky compiler found some instances of statements for creating
3249 error messages that either had too many or two few arguments for the format
3250 string.
3251
325216. The size of the buffer for calls to the DNS resolver has been increased
3253 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3254 for addresses that have a lot of PTR records. This alleviates a problem; it
3255 does not fully solve it.
3256
325717. A dnsdb lookup for PTR records that receives more data than will fit in the
3258 buffer now truncates the list and logs the incident, which is the same
3259 action as happens when Exim is looking up a host name and its aliases.
3260 Previously in this situation something unpredictable would happen;
3261 sometimes it was "internal error: store_reset failed".
3262
326318. If a server dropped the connection unexpectedly when an Exim client was
3264 using GnuTLS and trying to read a response, the client delivery process
3265 crashed while trying to generate an error log message.
3266
326719. If a "warn" verb in an ACL added multiple headers to a message in a single
3268 string, for example:
3269
3270 warn message = H1: something\nH2: something
3271
3272 the text was added as a single header line from Exim's point of view
3273 though it ended up OK in the delivered message. However, searching for the
3274 second and subsequent header lines using $h_h2: did not work. This has been
3275 fixed. Similarly, if a system filter added multiple headers in this way,
3276 the routers could not see them.
3277
327820. Expanded the error message when iplsearch is called with an invalid key to
3279 suggest using net-iplsearch in a host list.
3280
328121. When running tests using -bh, any delays imposed by "delay" modifiers in
3282 ACLs are no longer actually imposed (and a message to that effect is
3283 output).
3284
328522. If a "gecos" field in a passwd entry contained escaped characters, in
3286 particular, if it contained a \" sequence, Exim got it wrong when building
3287 a From: or a Sender: header from that name. A second bug also caused
3288 incorrect handling when an unquoted " was present following a character
3289 that needed quoting.
3290
329123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3292 was not being matched caselessly.
3293
329424. Arranged for all hyphens in the exim.8 source to be escaped with
3295 backslashes.
3296
329725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3298 properly. Recipient callout cache records were still being keyed to include
3299 the sender, even when use_sender was set false. This led to far more
3300 callouts that were necessary. The sender is no longer included in the key
3301 when use_sender is false.
3302
330326. Added "control = submission" modifier to ACLs.
3304
330527. Added the ${base62d: operator to decode base 62 numbers.
3306
330728. dnsdb lookups can now access SRV records.
3308
330929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3310 the configuration file.
3311
331230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3313 (-v) mode. This makes the output for a verbose queue run more intelligible.
3314
331531. Added a use_postmaster feature to recipient callouts.
3316
331732. Added the $body_zerocount variable, containing the number of binary zero
3318 bytes in the message body.
3319
332033. The time of last modification of the "new" subdirectory is now used as the
3321 "mailbox time last read" when there is a quota error for a maildir
3322 delivery.
3323
332434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3325
332635. Added +ignore_unknown as a special item in host lists.
3327
332836. Code for decoding IPv6 addresses in host lists is now included, even if
3329 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3330 address was recognized as an IP address, but was then not correctly decoded
3331 into binary, causing unexpected and incorrect effects when compared with
3332 another IP address.
3333
3334
3335Exim version 4.34
3336-----------------
3337
3338 1. Very minor rewording of debugging text in manualroute to say "list of
3339 hosts" instead of "hostlist".
3340
3341 2. If verify=header_syntax was set, and a header line with an unqualified
3342 address (no domain) and a large number of spaces between the end of the
3343 name and the colon was received, the reception process suffered a buffer
3344 overflow, and (when I tested it) crashed. This was caused by some obsolete
3345 code that should have been removed. The fix is to remove it!
3346
3347 3. When running in the test harness, delay a bit after writing a bounce
3348 message to get a bit more predictability in the log output.
3349
3350 4. Added a call to search_tidyup() just before forking a reception process. In
3351 theory, someone could use a lookup in the expansion of smtp_accept_max_
3352 per_host which, without the tidyup, could leave open a database connection.
3353
3354 5. Added the variables $recipient_data and $sender_data which get set from a
3355 lookup success in an ACL "recipients" or "senders" condition, or a router
3356 "senders" option, similar to $domain_data and $local_part_data.
3357
3358 6. Moved the writing of debug_print from before to after the "senders" test
3359 for routers.
3360
3361 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3362 problems for message scanning, either using a data ACL, or using
3363 local_scan() because the Received: header was not generated till after they
3364 were called (in order to set the time as the time of reception completion).
3365 I have revised the way this works. The header is now generated after the
3366 body is received, but before the ACL or local_scan() are called. After they
3367 are run, the timestamp in the header is updated.
3368
3369
3370Exim version 4.33
3371-----------------
3372
3373 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3374 before starting a queue runner without re-exec. This happened only when
3375 deliver_drop_privilege was set or when the Exim user was set to root. The
3376 effect of the bug was that timeouts during subsequent deliveries caused
3377 crashes instead of being properly handled. The handler is now left at its
3378 default (and expected) setting.
3379
3380 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3381 message, again when deliver_drop_privilege is set or Exim is run as root.
3382 The bug described in (1) was not present in this case, but the tidying up
3383 of the other signals was missing. I have made the two cases consistent.
3384
3385 3. The ignore_target_hosts setting on a manualroute router was being ignored
3386 for hosts that were looked up using the /MX notation.
3387
3388 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3389 in domain lists.
3390
3391 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3392 operated on the sender address. After changing the $sender_address to <>
3393 for the sender address verify, Exim was re-instated it as the original
3394 (before rewriting) address, but remembering that it had rewritten it, so it
3395 wasn't rewriting it again. This bug also had the effect of breaking the
3396 sender address verification caching when the sender address was rewritten.
3397
3398 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3399 This has been changed so that if the ip literal address matches
3400 ignore_target_hosts, the router declines.
3401
3402 7. Added expansion conditions match_domain, match_address, and match_local_
3403 part (NOT match_host).
3404
3405 8. The placeholder for the Received: header didn't have a length field set.
3406
3407 9. Added code to Exim itself and to exim_lock to test for a specific race
3408 condition that could lead to file corruption when using MBX delivery. The
3409 issue is with the lockfile that is created in /tmp. If this file is removed
3410 after a process has opened it but before that process has acquired a lock,
3411 there is the potential for a second process to recreate the file and also
3412 acquire a lock. This could lead to two Exim processes writing to the file
3413 at the same time. The added code performs the same test as UW imapd; it
3414 checks after acquiring the lock that its file descriptor still refers to
3415 the same named file.
3416
341710. The buffer for building added header lines was of fixed size, 8192 bytes.
3418 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3419 when Exim is built.
3420
342111. Added the smtp_active_hostname option. If used, this will typically be made
3422 to depend on the incoming interface address. Because $interface_address is
3423 not set up until the daemon has forked a reception process, error responses
3424 that can happen earlier (such as "too many connections") no longer contain
3425 a host name.
3426
342712. If an expansion in a condition on a "warn" statement fails because a lookup
3428 defers, the "warn" statement is abandoned, and the next ACL statement is
3429 processed. Previously this caused the whole ACL to be aborted.
3430
343113. Added the iplsearch lookup type.
3432
343314. Added ident_timeout as a log selector.
3434
343515. Added tls_certificate_verified as a log selector.
3436
343716. Added a global option tls_require_ciphers (compare the smtp transport
3438 option of the same name). This controls incoming TLS connections.
3439
344017. I finally figured out how to make tls_require_ciphers do a similar thing
3441 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3442 before starting the TLS session.
3443
344418. Tabs are now shown as \t in -bP output.
3445
344619. If the log selector return_path_on_delivery was set, Exim crashed when
3447 bouncing a message because it had too many Received: header lines.
3448
344920. If two routers both had headers_remove settings, and the first one included
3450 a superfluous trailing colon, the final name in the first list and the
3451 first name in the second list were incorrectly joined into one item (with a
3452 colon in the middle).
3453
3454
3455Exim version 4.32
3456-----------------
3457
3458 1. Added -C and -D options to the exinext utility, mainly to make it easier
3459 to include in the automated testing, but these could be helpful when
3460 multiple configurations are in use.
3461
3462 2. The exinext utility was not formatting the output nicely when there was
3463 an alternate port involved in the retry record key, nor when there was a
3464 message id as well (for retries that were specific to a specific message
3465 and a specific host). It was also confused by IPv6 addresses, because of
3466 the additional colons they contain. I have fixed the IPv4 problem, and
3467 patched it up to do a reasonable job for IPv6.
3468
3469 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3470 delivery, the log line now contains "pipelined" if PIPELINING was used.
3471
3472 4. An SMTP transport process used to panic and die if the bind() call to set
3473 an explicit outgoing interface failed. This has been changed; it is now
3474 treated in the same way as a connect() failure.
3475
3476 5. A reference to $sender_host_name in the part of a conditional expansion
3477 that was being skipped was still causing a DNS lookup. This no longer
3478 occurs.
3479
3480 6. The def: expansion condition was not recognizing references to header lines
3481 that used bh_ and bheader_.
3482
3483 7. Added the _cache feature to named lists.
3484
3485 8. The code for checking quota_filecount in the appendfile transport was
3486 allowing one more file than it should have been.
3487
3488 9. For compatibility with Sendmail, the command line option
3489
3490 -prval:sval
3491
3492 is equivalent to
3493
3494 -oMr rval -oMs sval
3495
3496 and sets the incoming protocol and host name (for trusted callers). The
3497 host name and its colon can be omitted when only the protocol is to be set.
3498 Note the Exim already has two private options, -pd and -ps, that refer to
3499 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3500 "s", but I don't think that's a major issue.
3501
350210. A number of refactoring changes to the code, none of which should affect
3503 Exim's behaviour:
3504
3505 (a) The number of logging options was getting close to filling up the
3506 32-bit word that was used as a bit map. I have split them into two classes:
3507 those that are passed in the argument to log_write(), and those that are
3508 only ever tested independently outside of that function. These are now in
3509 separate 32-bit words, so there is plenty of room for expansion again.
3510 There is no change in the user interface or the logging behaviour.
3511
3512 (b) When building, for example, log lines, the code previously used a
3513 macro that called string_cat() twice, in order to add two strings. This is
3514 not really sufficiently general. Furthermore, there was one instance where
3515 it was actually wrong because one of the argument was used twice, and in
3516 one call a function was used. (As it happened, calling the function twice
3517 did not affect the overall behaviour.) The macro has been replaced by a
3518 function that can join an arbitrary number of extra strings onto a growing
3519 string.
3520
3521 (c) The code for expansion conditions now uses a table and a binary chop
3522 instead of a serial search (which was left over from when there were very
3523 few conditions). Also, it now recognizes conditions like "pam" even when
3524 the relevant support is not compiled in: a suitably worded error message is
3525 given if an attempt is made to use such a condition.
3526
352711. Added ${time_interval:xxxxx}.
3528
352912. A bug was causing one of the ddress fields not to be passed back correctly
3530 from remote delivery subprocesses. The field in question was not being
3531 subsequently used, so this caused to problems in practice.
3532
353313. Added new log selectors queue_time and deliver_time.
3534
353514. Might have fixed a bug in maildirsizefile handling that threw up
3536 "unexpected character" debug warnings, and recalculated the data
3537 unnecessarily. In any case, I expanded the warning message to give more
3538 information.
3539
354015. Added the message "Restricted characters in address" to the statements in
3541 the default ACL that block characters like @ and % in local parts.
3542
354316. Change 71 for release 4.31 proved to be much less benign that I imagined.