Close the socket used by the dovecot authenticator. Fixes: #667
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
3f0da4d0 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.542 2008/02/06 12:44:58 nm4 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
210f147e
NM
6Exim version 4.70
7-----------------
8
9NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
10 When building exim an external PCRE library is now needed -
11 PCRE is a system library on the majority of modern systems.
12 See entry on PCRE_LIBS in EDITME file.
13
deafd5b3
NM
14NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
15 conversation. Added nologin parameter to request.
16 Patch contributed by Kirill Miazine
17
089793a4
TF
18TF/01 Do not log submission mode rewrites if they do not change the address.
19
5f16ca82
TF
20TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
21
dae9d94e
NM
22NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
23 log files in place. Contributed by Roberto Lima
24
3f0da4d0
NM
25NM/04 Bugzilla 667: close socket used by dovecot authenticator
26
deafd5b3 27
47db1125
NM
28Exim version 4.69
29-----------------
30
4b3504d0
TK
31TK/01 Add preliminary DKIM support. Currently requires a forked version of
32 ALT-N's libdkim that I have put here:
33 http://duncanthrax.net/exim-experimental/
34
35 Note to Michael Haardt: I had to rename some vars in sieve.c. They
36 were called 'true' and it seems that C99 defines that as a reserved
37 keyword to be used with 'bool' variable types. That means you could
38 not include C99-style headers which use bools without triggering
39 build errors in sieve.c.
40
81ea09ca
NM
41NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
42 as mailq or other aliases. Changed the --help handling significantly
43 to do whats expected. exim_usage() emits usage/help information.
44
f13cddcb
SC
45SC/01 Added the -bylocaldomain option to eximstats.
46
8ad076b2
NM
47NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr
48
a843aaa6
NM
49NM/03 Bugzilla 613: Documentation fix for acl_not_smtp
50
47db1125
NM
51NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall)
52
53
eb4c0de6
PH
54Exim version 4.68
55-----------------
56
57PH/01 Another patch from the Sieve maintainer.
58
6a3bceb1
PH
59PH/02 When an IPv6 address is converted to a string for single-key lookup
60 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
61 dots are used instead of colons so that keys in lsearch files need not
62 contain colons. This was done some time before quoting was made available
63 in lsearch files. However, iplsearch files do require colons in IPv6 keys
64 (notated using the quote facility) so as to distinguish them from IPv4
65 keys. This meant that lookups for IP addresses in host lists did not work
66 for iplsearch lookups.
67
68 This has been fixed by arranging for IPv6 addresses to be expressed with
69 colons if the lookup type is iplsearch. This is not incompatible, because
70 previously such lookups could never work.
71
72 The situation is now rather anomolous, since one *can* have colons in
73 ordinary lsearch keys. However, making the change in all cases is
74 incompatible and would probably break a number of configurations.
75
2e30fa9d
TK
76TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
77 version.
78
0806a9c5
MH
79MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
80 conversion specification without a maximum field width, thereby enabling
81 a rogue spamd server to cause a buffer overflow. While nobody in their
82 right mind would setup Exim to query an untrusted spamd server, an
83 attacker that gains access to a server running spamd could potentially
84 exploit this vulnerability to run arbitrary code as the Exim user.
85
ae276964
TK
86TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
87 $primary_hostname instead of what libspf2 thinks the hosts name is.
88
0f2cbd1b
MH
89MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
90 a directory entry by the name of the lookup key. Previously, if a
91 symlink pointed to a non-existing file or a file in a directory that
92 Exim lacked permissions to read, a lookup for a key matching that
93 symlink would fail. Now it is enough that a matching directory entry
94 exists, symlink or not. (Bugzilla 503.)
95
2b85bce7
PH
96PH/03 The body_linecount and body_zerocount variables are now exported in the
97 local_scan API.
98
93655c46
PH
99PH/04 Added the $dnslist_matched variable.
100
6c512171
PH
101PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
102 This means they are set thereafter only if the connection becomes
103 encrypted.
104
105PH/06 Added the client_condition to authenticators so that some can be skipped
106 by clients under certain conditions.
107
aa6dc513
PH
108PH/07 The error message for a badly-placed control=no_multiline_responses left
109 "_responses" off the end of the name.
110
a96603a0
PH
111PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
112
8f240103
PH
113PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
114 (without spaces) instead of just copying the configuration text.
115
116PH/10 Added the /noupdate option to the ratelimit ACL condition.
117
d677b2f2
PH
118PH/11 Added $max_received_linelength.
119
d52120f2
PH
120PH/12 Added +ignore_defer and +include_defer to host lists.
121
64f2600a
PH
122PH/13 Installed PCRE version 7.2. This needed some changes because of the new
123 way in which PCRE > 7.0 is built.
124
8669f003
PH
125PH/14 Implemented queue_only_load_latch.
126
a4dc33a8
PH
127PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
128 MAIL command. The effect was to mangle the value on 64-bit systems.
129
d6a60c0f
PH
130PH/16 Another patch from the Sieve maintainer.
131
8f128379
PH
132PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
133
8932dffe
PH
134PH/18 If a system quota error occurred while trying to create the file for
135 a maildir delivery, the message "Mailbox is full" was not appended to the
136 bounce if the delivery eventually timed out. Change 4.67/27 below applied
137 only to a quota excession during the actual writing of the file.
d6a60c0f 138
ddea74fa 139PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
140 characters?) which causes problems in log lines. The DN values are now
141 passed through string_printing() before being added to log lines.
142
ddea74fa 143PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
144 and InterBase are left for another time.)
145
ddea74fa
PH
146PH/21 Added message_body_newlines option.
147
ce9f225c
PH
148PH/22 Guard against possible overflow in moan_check_errorcopy().
149
19897d52
PH
150PH/23 POSIX allows open() to be a macro; guard against that.
151
bc64a74d
PH
152PH/24 If the recipient of an error message contained an @ in the local part
153 (suitably quoted, of course), incorrect values were put in $domain and
154 $local_part during the evaluation of errors_copy.
155
eb4c0de6 156
b4ed4da0
PH
157Exim version 4.67
158-----------------
159
22ad45c9
MH
160MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
161 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
162 Jan Srzednicki.
163
b4ed4da0
PH
164PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
165 issue a MAIL command.
166
431b7361
PH
167PH/02 In an ACL statement such as
168
169 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
170
171 if a client was not listed at all, or was listed with a value other than
172 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
173 the condition was not true (as it should be), so access was not denied.
174 The bug was that the ! inversion was incorrectly passed on to the second
175 item. This has been fixed.
176
177PH/03 Added additional dnslists conditions == and =& which are different from
178 = and & when the dns lookup returns more than one IP address.
179
83da1223
PH
180PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
181 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
182
54fc8428
PH
183PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
184 FSYNC, which compiles an option called disable_fsync that allows for
185 bypassing fsync(). The documentation is heavily laced with warnings.
186
34c5e8dd
SC
187SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
188
bbe15da8
PH
189PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
190 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
191 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
192 including adding "make clean"; (3) Added -fPIC when compiling the test
193 dynamically loaded module, to get rid of a warning.
194
0e8a9471
MH
195MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
196 message fails, move_frozen_messages = true and ignore_bounce_errors_after
197 = 0s. The bug is otherwise harmless.
198
f0872424
PH
199PH/07 There was a bug in the dovecot authenticator such that the value of
200 $auth1 could be overwritten, and so not correctly preserved, after a
201 successful authentication. This usually meant that the value preserved by
202 the server_setid option was incorrect.
203
b01dd148
PH
204PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
205
6bf342e1
PH
206PH/09 Installed PCRE release 7.0.
207
273f34d0
PH
208PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
209 run for batched SMTP input. It is now run at the start of every message
210 in the batch. While fixing this I discovered that the process information
211 (output by running exiwhat) was not always getting set for -bs and -bS
212 input. This is fixed, and it now also says "batched" for BSMTP.
213
cf8b11a5
PH
214PH/11 Added control=no_pipelining.
215
41c7c167
PH
216PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
217 patch, slightly modified), and move the expansion of helo_data till after
218 the connection is made in the smtp transport (so it can use these
219 values).
220
9c57cbc0
PH
221PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
222
f3f065bb
PH
223PH/14 Added log_selector = +pid.
224
047bdd8c
PH
225PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
226
0ce9abe6
PH
227PH/16 Add ${if forany and ${if forall.
228
0e22dfd1
PH
229PH/17 Added dsn_from option to vary the From: line in DSNs.
230
4c590bd1
PH
231PH/18 Flush SMTP output before performing a callout, unless control =
232 no_callout_flush is set.
233
09945f1e
PH
234PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
235 was true (the default) a successful delivery failed to delete the retry
236 item, thus causing premature timeout of the address. The bug is now
237 fixed.
238
c51b8e75
PH
239PH/20 Added hosts_avoid_pipelining to the smtp transport.
240
e28326d8
PH
241PH/21 Long custom messages for fakedefer and fakereject are now split up
242 into multiline reponses in the same way that messages for "deny" and
243 other ACL rejections are.
244
75b1493f
PH
245PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
246 with slight modification.
247
7c5214ec
PH
248PH/23 Applied sieve patches from the maintainer "tracking the latest notify
249 draft, changing the syntax and factoring some duplicate code".
250
4311097e
PH
251PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
252 for deliveries of the second and subsequent messages over the same SMTP
253 connection.
254
29f89cad
PH
255PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
256 ${reduce, with only minor "tidies".
257
5e687460
SC
258SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
259
c3611384
PH
260PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
261 expansion side effects.
262
5a11a7b4
PH
263PH/27 When a message times out after an over-quota error from an Exim-imposed
264 quota, the bounce message says "mailbox is full". This message was not
265 being given when it was a system quota that was exceeded. It now should
266 be the same.
267
0e20aff9
MH
268MH/03 Made $recipients available in local_scan(). local_scan() already has
269 better access to the recipient list through recipients_list[], but
270 $recipients can be useful in postmaster-provided expansion strings.
271
ca86f471
PH
272PH/28 The $smtp_command and $smtp_command_argument variables were not correct
273 in the case of a MAIL command with additional options following the
274 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
275 were accidentally chopped off.
276
a14e5636
PH
277PH/29 SMTP synchronization checks are implemented when a command is read -
278 there is a check that no more input is waiting when there shouldn't be
279 any. However, for some commands, a delay in an ACL can mean that it is
280 some time before the response is written. In this time, more input might
281 arrive, invalidly. So now there are extra checks after an ACL has run for
282 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
283 pipelining has not been advertised.
284
ec95d1a6
PH
285PH/30 MH's patch to allow iscntrl() characters to be list separators.
286
42855d71
PH
287PH/31 Unlike :fail:, a custom message specified with :defer: was not being
288 returned in the SMTP response when smtp_return_error_details was false.
289 This has been fixed.
290
57c2c631
PH
291PH/32 Change the Dovecot authenticator to use read() and write() on the socket
292 instead of the C I/O that was originally supplied, because problems were
293 reported on Solaris.
294
58c01c94
PH
295PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
296 Exim which did not show up earlier: it was assuming that a call to
297 SSL_CTX_set_info_callback() might give an error value. In fact, there is
298 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
299 was a macro that became an assignment, so it seemed to work. This has
300 changed to a proper function call with a void return, hence the compile
301 error. Exim's code has been fixed.
302
dee5a20a
PH
303PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
304 cpus.
305
d2ee6114
PH
306PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
307
b2d5182b
PH
308PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
309
79749a79
PH
310PH/37 If a message is not accepted after it has had an id assigned (e.g.
311 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
312 "Completed" line in the log. When some messages of this type were
313 selected by exigrep, they were listed as "not completed". Others were
314 picked up by some special patterns. I have improved the selection
315 criteria to be more general.
79749a79 316
c456d9bb
PH
317PH/38 The host_find_failed option in the manualroute router can now be set
318 to "ignore", to completely ignore a host whose IP address cannot be
319 found. If all hosts are ignored, the behaviour is controlled by the new
320 host_all_ignored option.
321
cd9868ec
PH
322PH/39 In a list of hosts for manualroute, if one item (either because of multi-
323 homing or because of multiple MX records with /mx) generated more than
324 one IP address, and the following item turned out to be the local host,
325 all the secondary addresses of the first item were incorrectly removed
326 from the list, along with the local host and any following hosts (which
327 is what is supposed to happen).
328
ebeaf996
PH
329PH/40 When Exim receives a message, it writes the login name, uid, and gid of
330 whoever called Exim into the -H file. In the case of the daemon it was
331 behaving confusingly. When first started, it used values for whoever
332 started the daemon, but after a SIGHUP it used the Exim user (because it
333 calls itself on a restart). I have changed the code so that it now always
334 uses the Exim user.
335
2679d413
PH
336PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
337 message are rejected with the same error (e.g. no authentication or bad
338 sender address), and a DATA command is nevertheless sent (as can happen
339 with PIPELINING or a stupid MUA), the error message that was given to the
340 RCPT commands is included in the rejection of the DATA command. This is
341 intended to be helpful for MUAs that show only the final error to their
342 users.
343
84024b72
PH
344PH/42 Another patch from the Sieve maintainer.
345
8005d38e
SC
346SC/02 Eximstats - Differentiate between permanent and temporary rejects.
347 Eximstats - Fixed some broken HTML links and added missing column headers
348 (Jez Hancock).
349 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
350 columns for Rejects, Temp Rejects, Ham, and Spam rows.
351
3298c6c6
SC
352SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
353
a43a27c5
PH
354PH/43 Yet another patch from the Sieve maintainer.
355
58eb016e 356PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
357 the response to the final '.' that terminates a message, but only in the
358 case where the client has not sent further data following the '.'
359 (unfortunately, this is allowed). However, in many cases there won't be
360 any further data because there won't be any more messages to send. A call
361 to select() can be used: if it shows that the input is "ready", there is
362 either input waiting, or the socket has been closed. An attempt to read
363 the next input character can distinguish the two cases. Previously, Exim
58eb016e 364 would have sent an OK response which the client would never have see.
563b63fa
PH
365 This could lead to message repetition. This fix should cure that, at
366 least in a lot of common cases.
58eb016e 367
b43a74ea
PH
368PH/45 Do not advertise STARTTLS in response to HELP unless it would be
369 advertised in response to EHLO.
370
b4ed4da0 371
5dd1517f
PH
372Exim version 4.66
373-----------------
374
375PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
376 fixed by 4.65/MH/01 (is this a record?) are fixed:
377
378 (i) An empty string was always treated as zero by the numeric comparison
379 operators. This behaviour has been restored.
380
381 (ii) It is documented that the numeric comparison operators always treat
382 their arguments as decimal numbers. This was broken in that numbers
383 starting with 0 were being interpreted as octal.
384
385 While fixing these problems I realized that there was another issue that
386 hadn't been noticed. Values of message_size_limit (both the global option
387 and the transport option) were treated as octal if they started with 0.
388 The documentation was vague. These values are now always treated as
389 decimal, and I will make that clear in the documentation.
390
391
93cfa765
TK
392Exim version 4.65
393-----------------
394
395TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
396 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
397 versions. (#438)
398
d6066548
MH
399MH/01 Don't check that the operands of numeric comparison operators are
400 integers when their expansion is in "skipping" mode (fixes bug
401 introduced by 4.64-PH/07).
402
4362ff0d
PH
403PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
404 child addresses, Exim now panics and dies. Previously, because the count
405 is held in a short int, deliveries were likely to be lost. As such a
406 large number of recipients for a single message is ridiculous
407 (performance will be very, very poor), I have chosen to impose a limit
408 rather than extend the field.
409
93cfa765 410
944e9e9c
TF
411Exim version 4.64
412-----------------
aa41d2de 413
21d74bd9
TK
414TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
415 leftover -K file (the existence of which was triggered by #402).
416 While we were at it, introduced process PID as part of the -K
417 filename. This should rule out race conditions when creating
418 these files.
419
420TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
421 processing considerably. Previous code took too long for large mails,
422 triggering a timeout which in turn triggers #401.
423
424TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
425 in the DK code in transports.c. sendfile() is not really portable,
426 hence the _LINUX specificness.
944e9e9c
TF
427
428TF/01 In the add_headers option to the mail command in an Exim filter,
429 there was a bug that Exim would claim a syntax error in any
430 header after the first one which had an odd number of characters
431 in the field name.
432
2b1c6e3a
PH
433PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
434 callout verification, Exim cached a "reject" for the entire domain. This
435 is correct for most verifications, but it is not correct for a recipient
436 verification with use_sender or use_postmaster set, because in that case
437 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
438 case of MAIL FROM:<> rejection from other early rejections (e.g.
439 rejection of HELO). When verifying a recipient using a non-null MAIL
440 address, the cache is ignored if it shows MAIL FROM:<> rejection.
441 Whatever the result of the callout, the value of the domain cache is
442 left unchanged (for any other kind of callout, getting as far as trying
443 RCPT means that the domain itself is ok).
444
1f872c80
PH
445PH/02 Tidied a number of unused variable and signed/unsigned warnings that
446 gcc 4.1.1 threw up.
447
448PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
449 manifest itself as EPIPE rather than ECONNECT. When tidying away a
450 session, the daemon ignores ECONNECT errors and logs others; it now
451 ignores EPIPE as well.
452
d203e649
PH
453PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
454 (quoted-printable decoding).
455
cc2ed8f7 456PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 457 later the small subsequent patch to fix an introduced bug.
f951fd57 458
ddfcd446
PH
459PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
460
d45b1de8
PH
461PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
462
463PH/08 An error is now given if message_size_limit is specified negative.
464
38a0a95f 465PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 466 to be given (somewhat) arbitrary names.
38a0a95f 467
a2405d83
JJ
468JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
469 in 4.64-PH/09.
470
471JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
472 miscellaneous code fixes
473
6ea85e9a
PH
474PH/10 Added the log_reject_target ACL modifier to specify where to log
475 rejections.
476
26da7e20
PH
477PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
478 hostname. This is wrong, because it relates to the incoming message (and
479 probably the interface on which it is arriving) and not to the outgoing
480 callout (which could be using a different interface). This has been
481 changed to use the value of the helo_data option from the smtp transport
482 instead - this is what is used when a message is actually being sent. If
483 there is no remote transport (possible with a router that sets up host
484 addresses), $smtp_active_hostname is used.
6ea85e9a 485
14aa5a05 486PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 487 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
488 (a) The code assumed that strncpy() returns a negative number on buffer
489 overflow, which isn't the case. Replaced with Exim's string_format()
490 function.
491 (b) There were several signed/unsigned issues. I just did the minimum
492 hacking in of casts. There is scope for a larger refactoring.
493 (c) The code used strcasecmp() which is not a standard C function.
494 Replaced with Exim's strcmpic() function.
495 (d) The code set only $1; it now sets $auth1 as well.
496 (e) A simple test gave the error "authentication client didn't specify
497 service in request". It would seem that Dovecot has changed its
498 interface. Fortunately there's a specification; I followed it and
499 changed what the client sends and it appears to be working now.
500
ff75a1f7
PH
501PH/13 Added $message_headers_raw to provide the headers without RFC 2047
502 decoding.
503
e6f6568e
PH
504PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
505 address A is aliased to B and C, where B exists and C does not. Without
506 -v the output is "A verified" because verification stops after a
507 successful redirection if more than one address is generated. However,
508 with -v the child addresses are also verified. Exim was outputting "A
509 failed to verify" and then showing the successful verification for C,
510 with its parentage. It now outputs "B failed to verify", showing B's
511 parentage before showing the successful verification of C.
512
d6f6e0dc
PH
513PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
514 look up a TXT record in a specific list after matching in a combined
515 list.
516
322050c2
PH
517PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
518 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
519 they consult the DNS. I had assumed they would set it the way they
520 wanted; and indeed my experiments on Linux seem to show that in some
521 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
522 To be on the safe side, however, I have now made the interface to
523 host_find_byname() similar to host_find_bydns(), with an argument
524 containing the DNS resolver options. The host_find_byname() function now
525 sets these options at its start, just as host_find_bydns() does. The smtp
526 transport options dns_qualify_single and dns_search_parents are passed to
527 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
528 of host_find_byname() use the default settings of RES_DEFNAMES
529 (qualify_single) but not RES_DNSRCH (search_parents).
530
08955dd3
PH
531PH/17 Applied (a modified version of) Nico Erfurth's patch to make
532 spool_read_header() do less string testing, by means of a preliminary
533 switch on the second character of optional "-foo" lines. (This is
534 overdue, caused by the large number of possibilities that now exist.
535 Originally there were few.) While I was there, I also converted the
536 str(n)cmp tests so they don't re-test the leading "-" and the first
537 character, in the hope this might squeeze out yet more improvement.
538
1eccaa59
PH
539PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
540 flag allowing group syntax was set by the header_syntax check but not
541 turned off, possible causing trouble later; (2) The flag was not being
542 set at all for the header_verify test, causing "group"-style headers to
543 be rejected. I have now set it in this case, and also caused header_
544 verify to ignore an empty address taken from a group. While doing this, I
545 came across some other cases where the code for allowing group syntax
546 while scanning a header line wasn't quite right (mostly, not resetting
547 the flag correctly in the right place). These bugs could have caused
548 trouble for malformed header lines. I hope it is now all correct.
549
602e59e5
PH
550PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
551 with the "reply" argument non-NULL. The code, however (which originally
552 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
553 but it didn't always do it. This confused somebody who was copying the
554 code for some other use. I have removed all the tests.
555
411ef850
PH
556PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
557 feature that was used to support insecure browsers during the U.S. crypto
558 embargo. It requires special client support, and Exim is probably the
559 only MTA that supported it -- and would never use it because real RSA is
560 always available. This code has been removed, because it had the bad
561 effect of slowing Exim down by computing (never used) parameters for the
562 RSA_EXPORT functionality.
563
7befa435
PH
564PH/21 On the advice of Timo Sirainen, added a check to the dovecot
565 authenticator to fail if there's a tab character in the incoming data
566 (there should never be unless someone is messing about, as it's supposed
567 to be base64-encoded). Also added, on Timo's advice, the "secured" option
568 if the connection is using TLS or if the remote IP is the same as the
569 local IP, and the "valid-client-cert option" if a client certificate has
570 been verified.
571
48da4259 572PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
573 authenticators. This can be used for authorization after authentication
574 succeeds. (In the case of plaintext, it servers for both authentication
575 and authorization.)
576
48da4259
PH
577PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
578 if any retry times were supplied.
579
d1d5595c
PH
580PH/24 Exim crashed if verify=helo was activated during an incoming -bs
581 connection, where there is no client IP address to check. In this
582 situation, the verify now always succeeds.
583
0ef732d9
PH
584PH/25 Applied John Jetmore's -Mset patch.
585
328895cc
PH
586PH/26 Added -bem to be like -Mset, but loading a message from a file.
587
fd700877
PH
588PH/27 In a string expansion for a processed (not raw) header when multiple
589 headers of the same name were present, leading whitespace was being
590 removed from all of them, but trailing whitespace was being removed only
591 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
592 before concatenation. Completely empty headers in a concatenation (as
593 before) are ignored.
fd700877 594
8dce1a6f
PH
595PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
596 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
597
17af4a17
PH
598PH/29 [Removed. This was a change that I later backed out, and forgot to
599 correct the ChangeLog entry (that I had efficiently created) before
600 committing the later change.]
f6c332bd
PH
601
602PH/30 Exim was sometimes attempting to deliver messages that had suffered
603 address errors (4xx response to RCPT) over the same connection as other
604 messages routed to the same hosts. Such deliveries are always "forced",
605 so retry times are not inspected. This resulted in far too many retries
606 for the affected addresses. The effect occurred only when there were more
607 hosts than the hosts_max_try setting in the smtp transport when it had
608 the 4xx errors. Those hosts that it had tried were not added to the list
609 of hosts for which the message was waiting, so if all were tried, there
610 was no problem. Two fixes have been applied:
611
612 (i) If there are any address or message errors in an SMTP delivery, none
613 of the hosts (tried or untried) are now added to the list of hosts
614 for which the message is waiting, so the message should not be a
615 candidate for sending over the same connection that was used for a
616 successful delivery of some other message. This seems entirely
617 reasonable: after all the message is NOT "waiting for some host".
618 This is so "obvious" that I'm not sure why it wasn't done
619 previously. Hope I haven't missed anything, but it can't do any
620 harm, as the worst effect is to miss an optimization.
621
622 (ii) If, despite (i), such a delivery is accidentally attempted, the
623 routing retry time is respected, so at least it doesn't keep
624 hammering the server.
625
c1114884
PH
626PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
627 in ${readsocket because some servers need this prod.
628
7a0743eb
PH
629PH/32 Added some extra debug output when updating a wait-xxx database.
630
0d85fa3f
PH
631PH/33 The hint "could be header name not terminated by colon", which has been
632 given for certain expansion errors for a long time, was not being given
633 for the ${if def:h_colon_omitted{... case.
634
1bf43b78
PH
635PH/34 The spec says: "With one important exception, whenever a domain list is
636 being scanned, $domain contains the subject domain." There was at least
637 one case where this was not true.
638
520de300
PH
639PH/35 The error "getsockname() failed: connection reset by peer" was being
640 written to the panic log as well as the main log, but it isn't really
641 panic-worthy as it just means the connection died rather early on. I have
642 removed the panic log writing for the ECONNRESET error when getsockname()
643 fails.
644
48c7f9e2
PH
645PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
646 runs only) independently of the message's sender address. This meant
647 that, if the 4xx error was in fact related to the sender, a different
648 message to the same recipient with a different sender could confuse
649 things. In particualar, this can happen when sending to a greylisting
650 server, but other circumstances could also provoke similar problems.
651 I have changed the default so that the retry time for these errors is now
652 based a combination of the sender and recipient addresses. This change
653 can be overridden by setting address_retry_include_sender=false in the
654 smtp transport.
655
99ea1c86
PH
656PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
657 remote server are returned as part of bounce messages. This was not
658 happening for LMTP over a pipe (the lmtp transport), but now it is the
659 same for both kinds of LMTP.
660
a2042e78
PH
661PH/38 Despite being documented as not happening, Exim was rewriting addresses
662 in header lines that were in fact CNAMEs. This is no longer the case.
663
4fbcfc2e
PH
664PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
665 and queue runs started by the daemon processed all messages. This has
666 been fixed so that -R and -S can now usefully be given with -q<time>.
667
aa41d2de
PH
668PH/40 Import PCRE release 6.7 (fixes some bugs).
669
af561417
PH
670PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
671
3cc66b45
PH
672PH/42 Give an error if -q is specified more than once.
673
194cc0e4
PH
674PH/43 Renamed the variables $interface_address and $interface_port as
675 $received_ip_address and $received_port, to make it clear that these
676 values apply to message reception, and not to the outgoing interface when
677 a message is delivered. (The old names remain recognized, of course.)
678
a401ddaa
PH
679PH/44 There was no timeout on the connect() call when using a Unix domain
680 socket in the ${readsocket expansion. There now is.
681
4e88a19f
PH
682PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
683 be meaningful with "accept".
684
d7d7b289
SC
685SC/01 Eximstats V1.43
686 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
687
688SC/02 Eximstats V1.44
689 Use a glob alias rather than an array ref in the generated
690 parser. This improves both readability and performance.
691
692SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
693 Collect SpamAssassin and rejection statistics.
694 Don't display local sender or destination tables unless
695 there is data to show.
696 Added average volumes into the top table text output.
697
698SC/04 Eximstats V1.46
699 Collect data on the number of addresses (recipients)
700 as well as the number of messages.
701
702SC/05 Eximstats V1.47
703 Added 'Message too big' to the list of mail rejection
704 reasons (thanks to Marco Gaiarin).
705
706SC/06 Eximstats V1.48
707 Mainlog lines which have GMT offsets and are too short to
708 have a flag are now skipped.
709
710SC/07 Eximstats V1.49 (Alain Williams)
711 Added the -emptyok flag.
712
713SC/08 Eximstats V1.50
714 Fixes for obtaining the IP address from reject messages.
715
0ea2a468
JJ
716JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
717 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
718 whitesspace changes from 4.64-PH/27
719
720JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
721 match 4.64-PH/13
722
723JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
724 are found, allow negative numbers in numeric criteria)
725
726JJ/06 exipick.20061117.2, added new $message_body_missing variable
727
728JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
729 to match changes made in 4.64-PH/43
730
8a10f5a4
PH
731PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
732
30e18802
PH
733PH/47 Put in an explicit test for a DNS lookup of an address record where the
734 "domain" is actually an IP address, and force a failure. This locks out
735 those revolvers/nameservers that support "A-for-A" lookups, in
736 contravention of the specifications.
737
55728a4f
PH
738PH/48 When a host name was looked up from an IP address, and the subsequent
739 forward lookup of the name timed out, the host name was left in
740 $sender_host_name, contrary to the specification.
d7d7b289 741
d7837193
PH
742PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
743 restricted to single-key lookups, Exim was not diagnosing an error if
744 * or *@ was used with a query-style lookup.
745
87054a31
PH
746PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
747
ea2c01d2
MH
748MH/01 local_scan ABI version incremented to 1.1. It should have been updated
749 long ago, but noone interested enough thought of it. Let's just say that
750 the "1.1" means that there are some new functions that weren't there at
751 some point in the past.
752
e4fa6968
PH
753PH/51 Error processing for expansion failure of helo_data from an smtp
754 transport during callout processing was broken.
755
56f5d9bd
PH
756PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
757 tested/used via the -bh/-bhc/-bs options.
758
922e1c28
PH
759PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
760 bug, fixed in subsequent PCRE releases).
761
21eb6e72
PH
762PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
763 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
764
a0540757
PH
765PH/55 Check for a ridiculously long file name in exim_dbmbuild.
766
944e9e9c 767
478be7b0
SC
768Exim version 4.63
769-----------------
770
771SC/01 Use a glob alias rather than an array ref in eximstats generated
772 parser. This improves both readability and performance.
773
774SC/02 Collect SpamAssassin and rejection statistics in eximstats.
775 Don't display local sender or destination tables in eximstats unless
776 there is data to show.
777 Added average volumes into the eximstats top table text output.
778
779SC/03 Collect data on the number of addresses (recipients) as well
780 as the number of messages in eximstats.
781
2b965a65
TF
782TF/01 Correct an error in the documentation for the redirect router. Exim
783 does (usually) call initgroups() when daemonizing.
478be7b0 784
45b91596
PH
785TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
786 with consistent privilege compared to when running as a daemon.
478be7b0 787
c59f5781
TF
788TF/03 Note in the spec that $authenticated_id is not set for local
789 submissions from trusted users.
790
90fc3069
TF
791TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
792 Thanks to Dean Brooks <dean@iglou.com> for the patch.
793
6083aca0
TF
794TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
795 by adding some example configuration directives to the default
796 configuration file. A little bit of work is required to uncomment the
797 directives and define how usernames and passwords are checked, but
798 there is now a framework to start from.
799
765b530f
PH
800PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
801 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
802 without this. I don't know how relevant this is to other LDAP libraries.
803
4e167a8c
PH
804PH/02 Add the verb name to the "unknown ACL verb" error.
805
4608d683
PH
806PH/03 Magnus Holmgren's patch for filter_prepend_home.
807
b8dc3e4a
PH
808PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
809
5418e93b
PH
810PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
811 directory not expanded when it should be if an expanded home directory
812 was set for the address (which is overridden by the transport).
813
b4a9bda2
PH
814PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
815 libradius.
816
45b91596
PH
817PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
818 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
819 because it is too late at that time, and has no effect.
820
5547e2c5
PH
821PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
822 security issue with \' (bugzilla #107). I could not use the
823 PQescapeStringConn() function, because it needs a PGconn value as one of
824 its arguments.
825
dbcef0ea
PH
826PH/08 When testing addresses using -bt, indicate those final addresses that
827 are duplicates that would not cause an additional delivery. At least one
828 person was confused, thinking that -bt output corresponded to deliveries.
829 (Suppressing duplicates isn't a good idea as you lose the information
830 about possibly different redirections that led to the duplicates.)
831
25257489
PH
832PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
833 systems where poll() doesn't work, in particular OS X.
834
c816d124
PH
835PH/10 Added more information to debugging output for retry time not reached.
836
a9ccd69a
PH
837PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
838 operations in malware.c.
839
75fa1910
PH
840PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
841 signatures.
842
a7d7aa58
PH
843PH/13 If write_rejectlog was set false when logging was sent to syslog with
844 syslog_duplication set false, log lines that would normally be written
845 both the the main log and to the reject log were not written to syslog at
846 all.
847
42119b09
PH
848PH/14 In the default configuration, change the use of "message" in ACL warn
849 statements to "add_header".
850
41609df5
PH
851PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
852 not followed by a command (e.g. "seen endif").
853
a5bd321b
PH
854PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
855 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
856 latter.
857
e85a7ad5 858PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
859 so that it is now:
860
e85a7ad5
PH
861 ${if or { \
862 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
863 { match{$h_precedence:}{(?i)bulk|list|junk} } \
864 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
865 }{no}{yes}}
866
e85a7ad5
PH
867 The Auto-Submitted: and various List- headers are standardised, whereas I
868 don't think Precedence: ever was.
5dff5817 869
d8fe1c03
PH
870PH/18 Refactored debugging code in route_finduser() to show more information,
871 in particular, the error code if getpwnam() issues one.
872
16282d2b
PH
873PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
874 This is apparently needed in addition to the PH/07 change above to avoid
875 any possible encoding problems.
876
35d40a98
PH
877PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
878 but not after initializing Perl.
879
034d99ab
PH
880PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
881 output them only if debugging. By default they are written stderr,
882 apparently, which is not desirable.
883
6ec97b1b
PH
884PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
885 queries.
886
e22ca4ac
JJ
887JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
888 --not options
889
890JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
891
33d73e3b
PH
892PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
893 authenticated or an ident call has been made. Suppress the default
894 values for $authenticated_id and $authenticated_sender (but permit -oMai
895 and -oMas) when testing with -bh.
896
9ecb03f3
PH
897PH/24 Re-jigged the order of the tests in the default configuration so that the
898 tests for valid domains and recipients precede the DNS black list and CSA
899 tests, on the grounds that those ones are more expensive.
900
084efe8d
PH
901PH/25 Exim was not testing for a space following SMTP commands such as EHLO
902 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
903 This bug exists in every version of Exim that I still have, right back to
904 0.12.
905
366fc9f0
PH
906PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
907 However, an attempt to turn on case-sensitivity in a regex key by
908 including (?-i) didn't work because the subject string was already
909 lowercased, and the effects were non-intuitive. It turns out that a
910 one-line patch can be used to allow (?-i) to work as expected.
911
c59f5781 912
c887c79e
TF
913Exim version 4.62
914-----------------
915
916TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
917 other effects) broke the use of negated acl sub-conditions.
918
1cce3af8
PH
919PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
920 patch).
921
afb3eaaf
PH
922PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
923 "Deny" causes Exim to reject the incoming connection with a 554 error.
924 Unfortunately, if there is a major crisis, such as a disk failure,
925 tcp-wrappers gives "deny", whereas what one would like would be some
926 kind of temporary error. A kludge has been added to help with this.
927 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
928 554 error is used if errno is still zero or contains ENOENT (which occurs
929 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
930 451 error is used.
931
e173618b
PH
932PH/03 Add -lutil to the default FreeBSD LIBS setting.
933
dd16e114
PH
934PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
935 errors. Otherwise a message that provokes a temporary error (when other
936 messages do not) can cause a whole host to time out.
937
f7fd3850
PH
938PH/05 Batch deliveries by appendfile and pipe transports did not work when the
939 addresses were routed directly to files or pipes from a redirect router.
940 File deliveries just didn't batch; pipe deliveries might have suffered
941 odd errors.
942
d87df92c
PH
943PH/06 A failure to get a lock for a hints database would erroneously always say
944 "Failed to get write lock", even when it was really a read lock.
945
7e9f683d
PH
946PH/07 The appendfile transport was creating MBX lock files with a fixed mode
947 of 0600. This has been changed to use the value of the lockfile_mode
948 option (which defaults to 0600).
949
bfad5236
PH
950PH/08 Applied small patch from the Sieve maintainer.
951
01c490df
PH
952PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
953 folder from quota calculations, a direct delivery into this folder messed
954 up the contents of the maildirsize file. This was because the regex was
955 used only to exclude .Trash (or whatever) when the size of the mailbox
956 was calculated. There was no check that a delivery was happening into an
957 excluded directory. This bug has been fixed by ignoring all quota
958 processing for deliveries into excluded directories.
959
d6629cdc
PH
960PH/10 Added the maildirfolder_create_regex option to appendfile.
961
1cce3af8 962
214e2000
PH
963Exim version 4.61
964-----------------
965
966PH/01 The code for finding all the local interface addresses on a FreeBSD
967 system running IPv6 was broken. This may well have applied to all BSD
968 systems, as well as to others that have similar system calls. The broken
969 code found IPv4 interfaces correctly, but gave incorrect values for the
970 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
971 that it would not match correctly against @[] and not recognize the IPv6
972 addresses as local.
973
f9daeae0
PH
974PH/02 The ipliteral router was not recognizing addresses of the form user@
975 [ipv6:....] because it didn't know about the "ipv6:" prefix.
976
7e66e54d
PH
977PH/03 Added disable_ipv6.
978
c8ea1597
PH
979PH/04 Changed $reply_address to use the raw form of the headers instead of the
980 decoded form, because it is most often used to construct To: headers
981 lines in autoreplies, and the decoded form may well be syntactically
982 invalid. However, $reply_address has leading white space removed, and all
983 newlines turned into spaces so that the autoreply transport does not
984 grumble.
985
911f6fde
PH
986PH/05 If group was specified without a user on a router, and no group or user
987 was specified on a transport, the group from the router was ignored.
988
47ca6d6c
PH
989PH/06 Increased the number of ACL variables to 20 of each type, and arranged
990 for visible compile-time settings that can be used to change these
991 numbers, for those that want even more. Backwards compatibility with old
992 spool files has been maintained. However, going back to a previous Exim
993 release will lost any variables that are in spool files.
994
ed0e9820
PH
995PH/07 Two small changes when running in the test harness: increase delay when
996 passing a TCP/IP connection to a new process, in case the original
997 process has to generate a bounce, and remove special handling of
998 127.0.0.2 (sic), which is no longer necessary.
999
eff37e47
PH
1000PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
1001 be the same on different OS.
1002
1921d2ea
PH
1003PH/09 Moved a debug statement in filter processing to avoid a race problem when
1004 testing.
1005
b3f69ca8
JJ
1006JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
1007 whether --show-vars was specified or not
1008
1009JJ/02 exipick: Added support for new ACL variable spool format introduced
1010 in 4.61-PH/06
1011
424a1c63
PH
1012PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
1013 syntactically invalid From: or Reply-to: line, and a filter used this to
1014 generate an autoreply, and therefore failed to obtain an address for the
1015 autoreply, Exim could try to deliver to a non-existent relative file
1016 name, causing unrelated and misleading errors. What now happens is that
1017 it logs this as a hard delivery error, but does not attempt to create a
1018 bounce message.
1019
7a100415
PH
1020PH/11 The exinext utility has a -C option for testing purposes, but although
1021 the given file was scanned by exinext itself; it wasn't being passed on
1022 when Exim was called.
1023
19b9dc85
PH
1024PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
1025 an end-of-file indication when reading a command response.
1026
309bd837
PH
1027PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
1028 compiled. In many other places in Exim, IPv6 addresses are always
1029 recognized, so I have changed this. It also means that IPv4 domain
1030 literals of the form [IPV4:n.n.n.n] are now always recognized.
1031
59e82a2a
PH
1032PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
1033 used if the router is not running as root, for example, when verifying at
1034 ACL time, or when using -bh. The debugging output from this situation was
1035 non-existent - all you got was a failure to exec. I have made two
1036 changes:
1037
1038 (a) Failures to set uid/gid, the current directory, or a process leader
1039 in a subprocess such as that created by queryprogram now generate
1040 suitable debugging ouput when -d is set.
1041
1042 (b) The queryprogram router detects when it is not running as root,
1043 outputs suitable debugging information if -d is set, and then runs
1044 the subprocess without attempting to change uid/gid.
1045
9edc04ce
PH
1046PH/15 Minor change to Makefile for building test_host (undocumented testing
1047 feature).
1048
1349e1e5
PH
1049PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1050 additional section of a DNS packet that returns MX or SRV records.
1051 Instead, it always explicitly searches for A/AAAA records. This avoids
1052 major problems that occur when a DNS server includes only records of one
1053 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1054 fixed another bug: if SRV records were looked up and the corresponding
1055 address records were *not* found in the additional section, the port
1056 values from the SRV records were lost.
1057
ea49d0e1
PH
1058PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1059 using the correct key (the original address) when searching the retry
1060 rules in order to find which one to use for generating the retry hint.
1061
064a94c9
PH
1062PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1063 adding the default one. Similarly, if it contains a Reply-To: header, the
1064 errors_reply_to option, if set, is not used.
1065
727071f8
PH
1066PH/19 When calculating a retry time, Exim used to measure the "time since
1067 failure" by looking at the "first failed" field in the retry record. Now
1068 it does not use this if it is later than than the arrival time of the
1069 message. Instead it uses the arrival time. This makes for better
1070 behaviour in cases where some deliveries succeed, thus re-setting the
1071 "first failed" field. An example is a quota failure for a huge message
1072 when small messages continue to be delivered. Without this change, the
1073 "time since failure" will always be short, possible causing more frequent
1074 delivery attempts for the huge message than are intended.
dd16e114 1075 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1076
f78eb7c6
PH
1077PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1078 $1, $2, $3) because the numerical variables can be reset during some
1079 expansion items (e.g. "match"), thereby losing the authentication data.
1080
21c28500
PH
1081PH/21 Make -bV show the size of off_t variables so that the test suite can
1082 decide whether to run tests for quotas > 2G.
1083
1084PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1085 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1086 filecount value is greater than 2G or if a quota value is greater than 2G
1087 on a system where the size of off_t is not greater than 4, a panic error
1088 is given.
1089
1688f43b
PH
1090PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1091 never match. The debug and -bh output now contains an explicit error
1092 message indicating a malformed IPv4 address or mask.
1093
1094PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1095 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1096 PH/23 above applies.
1097
9675b384
PH
1098PH/25 Do not write to syslog when running in the test harness. The only
1099 occasion when this arises is a failure to open the main or panic logs
1100 (for which there is an explicit test).
1101
6a3f1455
PH
1102PH/26 Added the /no_tell option to "control=freeze".
1103
dac79d3e
PH
1104PH/27 If a host name lookup failed very early in a connection, for example, if
1105 the IP address matched host_lookup and the reverse lookup yielded a name
1106 that did not have a forward lookup, an error message of the form "no IP
1107 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1108 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1109
5977a0b3
PH
1110PH/28 An enabling patch from MH: add new function child_open_exim2() which
1111 allows the sender and the authenticated sender to be set when
1112 submitting a message from within Exim. Since child_open_exim() is
1113 documented for local_scan(), the new function should be too.
1114
c91535f3
PH
1115PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1116 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1117 results in an empty string is now treated as unset.
1118
0d46a8c8
PH
1119PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1120
278c6e6c
PH
1121PH/31 Added sender_verify_fail logging option.
1122
2cbb4081
PH
1123PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1124 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1125 tidied the source and removed it altogether.
1126
3eef829e
PH
1127PH/33 When a queue run was abandoned because the load average was too high, a
1128 log line was always written; now it is written only if the queue_run log
1129 selector is set. In addition, the log line for abandonment now contains
1130 information about the queue run such as the pid. This is always present
1131 in "start" and "stop" lines but was omitted from the "abandon" line.
1132
1ab95fa6
PH
1133PH/34 Omit spaces between a header name and the colon in the error message that
1134 is given when verify = headers_syntax fails (if there are lots of them,
1135 the message gets confusing).
1136
230205fc
PH
1137PH/35 Change the default for dns_check_names_pattern to allow slashes within
1138 names, as there are now some PTR records that contain slashes. This check
1139 is only to protect against broken name servers that fall over on strange
1140 characters, so the fact that it applies to all lookups doesn't matter.
1141
75e0e026
PH
1142PH/36 Now that the new test suite is complete, we can remove some of the
1143 special code in Exim that was needed for the old test suite. For example,
1144 sorting DNS records because real resolvers return them in an arbitrary
1145 order. The new test suite's fake resolver always returns records in the
1146 same order.
1147
1148PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1149 bounces) except when queue_only is set, to avoid logging races between
1150 the different processes.
1151
145396a6
PH
1152PH/38 Panic-die if .include specifies a non-absolute path.
1153
3cd34f13
PH
1154PH/39 A tweak to the "H" retry rule from its user.
1155
11121d3d
JJ
1156JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1157 a label. They prevented compilation on older perls.
1158
1159JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1160 a warning to be raised on newish perls.
1161
1162JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1163 on queue. Changes to match documented behaviour of showing count of
1164 messages matching specified criteria.
1165
8def5aaf
PH
1166PH/40 Changed the default ident timeout from 30s to 5s.
1167
929ba01c
PH
1168PH/41 Added support for the use of login_cap features, on those BSD systems
1169 that have them, for controlling the resources used by pipe deliveries.
1170
2632889e
PH
1171PH/42 The content-scanning code uses fopen() to create files in which to put
1172 message data. Previously it was not paying any attention to the mode of
1173 the files. Exim runs with umask(0) because the rest of the code creates
1174 files with open(), and sets the required mode explicitly. Thus, these
1175 files were ending up world-writeable. This was not a big issue, because,
1176 being within the spool directory, they were not world-accessible. I have
1177 created a function called modefopen, which takes an additional mode
1178 argument. It sets umask(777), creates the file, chmods it to the required
1179 mode, then resets the umask. All the relevant calls to fopen() in the
1180 content scanning code have been changed to use this function.
1181
944a9c55
PH
1182PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1183 to 24 hours. This avoids potential overflow problems when processing G
1184 and H retry rules. I suspect nobody ever tinkers with this value.
1185
4a23603b
PH
1186PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1187
4730f942
PH
1188PH/45 When the plaintext authenticator is running as a client, the server's
1189 challenges are checked to ensure they are valid base64 strings. By
1190 default, the authentication attempt is cancelled if an invalid string is
1191 received. Setting client_ignore_invalid_base64 true ignores these errors.
1192 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1193 they are received. Thus, the responses can be made to depend on the
1194 challenges. If an invalid string is ignored, an empty string is placed in
1195 the variable.
1196
30dba1e6
PH
1197PH/46 Messages that are created by the autoreply transport now contains a
1198 References: header, in accordance with RFCs 2822 and 3834.
1199
382afc6b
PH
1200PH/47 Added authenticated_sender_force to the smtp transport.
1201
a86229cf
PH
1202PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1203
50c99ba6
PH
1204PH/49 Installed latest patch from the Sieve maintainer.
1205
d35e429d
PH
1206PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1207 was also set, the appendfile transport was unnecessarily scanning a
1208 directory of message files (e.g. for maildir delivery) to find the count
1209 of files (along with the size), even though it did not need this
1210 information. It now does the scan only if it needs to find either the
1211 size of the count of files.
1212
f90d018c
PH
1213PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1214
75def545
PH
1215PH/52 Two bugs concerned with error handling when the smtp transport is
1216 used in LMTP mode:
1217
1218 (i) Exim was not creating retry information for temporary errors given
1219 for individual recipients after the DATA command when the smtp transport
1220 was used in LMTP mode. This meant that they could be retried too
1221 frequently, and not timed out correctly.
1222
1223 (ii) Exim was setting the flag that allows error details to be returned
1224 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1225 recipients that were returned after the DATA command.
1226
1227PH/53 This is related to PH/52, but is more general: for any failing address,
1228 when detailed error information was permitted to be returned to the
1229 sender, but the error was temporary, then after the final timeout, only
1230 "retry timeout exceeded" was returned. Now it returns the full error as
1231 well as "retry timeout exceeded".
1232
c46782ef
PH
1233PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1234 do this, and (what is worse) MTAs that accept it.
1235
71fafd95
PH
1236PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1237 will now be deprecated.
1238
2c5db4fd
PH
1239PH/56 New os.c-cygwin from the Cygwin maintainer.
1240
9cf6b11a
JJ
1241JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1242 formats (previously only available in exim formats via -bpr, -bpru,
1243 and -bpra. Now also available in native and exiqgrep formats)
1244
1245JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1246 with very large, slow to parse queues
1247
1248JJ/08 exipick: added ! as generic prefix to negate any criteria format
1249
1250JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1251
898d150f
PH
1252PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1253 responses to authentication challenges, though it was showing the
1254 challenges; (ii) I've removed the CR characters from the debug output for
1255 SMTP output lines.
1256
46218253
PH
1257PH/58 Allow for the insertion of a newline as well as a space when a string
1258 is turned into more than one encoded-word during RFC 2047 encoding. The
1259 Sieve code now uses this.
1260
e97957bc
PH
1261PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1262 data_4xx, lost_connection, tls_required.
1263
81e509d7
PH
1264PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1265 message was being sent as an SMTP response.
1266
3d240ff7
PH
1267PH/61 Add -l and -k options to exicyclog.
1268
b37c4101
PH
1269PH/62 When verifying, if an address was redirected to one new address, so that
1270 verification continued, and the new address failed or deferred after
1271 having set something in $address_data, the value of $address_data was not
1272 passed back to the ACL. This was different to the case when no
1273 redirection occurred. The value is now passed back in both cases.
1274
79378e0f
PH
1275PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1276 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1277 use login_cap.h, so on its own it isn't the distinguishing feature. The
1278 new name refers directly to the setclassresources() function.
1279
e49c7bb4
PH
1280PH/65 Added configuration files for NetBSD3.
1281
d114ec46
PH
1282PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1283
f3d7df6c
PH
1284PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1285 is preferred over IPv4.
1286
715ab376
PH
1287PH/68 The bounce_return_message and bounce_return_body options were not being
1288 honoured for bounces generated during the reception of non-SMTP messages.
1289 In particular, this applied to messages rejected by the ACL. This bug has
1290 been fixed. However, if bounce_return_message is true and bounce_return_
1291 body is false, the headers that are returned for a non-SMTP message
1292 include only those that have been read before the error was detected.
1293 (In the case of an ACL rejection, they have all been read.)
1294
6b31b150
PH
1295PH/69 The HTML version of the specification is now built in a directory called
1296 spec_html instead of spec.html, because the latter looks like a path with
1297 a MIME-type, and this confuses some software.
1298
1299PH/70 Catch two compiler warnings in sieve.c.
1300
d515a917
PH
1301PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1302 function verify_get_ident() calls ip_connect() to connect a socket, but
1303 if the "connect()" function timed out, ip_connect() used to close the
1304 socket. However, verify_get_ident() also closes the socket later, and in
1305 between Exim writes to the log, which may get opened at this point. When
1306 the socket was closed in ip_connect(), the log could get the same file
1307 descriptor number as the socket. This naturally causes chaos. The fix is
1308 not to close the socket in ip_connect(); the socket should be closed by
1309 the function that creates it. There was only one place in the code where
1310 this was missing, in the iplookup router, which I don't think anybody now
1311 uses, but I've fixed it anyway.
1312
9b8fadde
PH
1313PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1314 well as to direct DNS lookups. Otherwise the handling of names in host
1315 lists is inconsistent and therefore confusing.
1316
214e2000 1317
5de37277
PH
1318Exim version 4.60
1319-----------------
1320
cc38ddbf
PH
1321PH/01 Two changes to the default runtime configuration:
1322
1323 (1) Move the checks for relay_from_hosts and authenticated clients from
1324 after to before the (commented out) DNS black list checks.
1325
1326 (2) Add control=submission to the relay_from_hosts and authenticated
1327 clients checks, on the grounds that messages accepted by these
1328 statements are most likely to be submissions.
5de37277 1329
72fdd6ae
PH
1330PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1331
1332 (1) Generate an error if the third argument for the ${prvs expansion is
1333 not a single digit.
1334
1335 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1336 string.
1337
1338 (3) Reset the variables that are obtained from the first argument of
1339 ${prvscheck and used in the second argument before leaving the code,
1340 because their memory is reclaimed, so using them afterwards may do
1341 silly things.
1342
1343 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1344 one (it's much easier than Tom thought :-).
1345
1346 (5) Because of (4), we can now allow for the use of $prvscheck_result
1347 inside the third argument.
cb9328de 1348
cb741023
PH
1349PH/03 For some reason, the default setting of PATH when running a command from
1350 a pipe transport was just "/usr/bin". I have changed it to
1351 "/bin:/usr/bin".
1352
f174f16e
PH
1353PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1354 anything to be listed in the output from -bV.
b2f5a032 1355
c25242d7
PH
1356PH/05 When a filter generated an autoreply, the entire To: header line was
1357 quoted in the delivery log line, like this:
1358
1359 => >A.N.Other <ano@some.domain> <original@ddress> ...
1360
1361 This has been changed so that it extracts the operative address. There
1362 may be more than one such address. If so, they are comma-separated, like
1363 this:
1364
1365 => >ano@some.domain,ona@other.domain <original@ddress> ...
1366
82c19f95
PH
1367PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1368 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1369 not being looked up in the rDNS to get a host name, Exim was showing the
1370 IP address twice in Received: lines, even though the IP addresses were
1371 identical. For example:
1372
1373 Received: from [1.2.3.4] (helo=[1.2.3.4])
1374
1375 However, if the real host name was known, it was omitting the HELO data
1376 if it matched the actual IP address. This has been tidied up so that it
1377 doesn't show the same IP address twice.
1378
d7ffbc12
PH
1379PH/07 When both +timestamp and +memory debugging was on, the value given by
1380 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1381 called by the debug printing, thereby overwriting the timestamp buffer.
1382 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1383
9f526266
PH
1384PH/08 When the original message was included in an autoreply transport, it
1385 always said "this is a copy of the message, including all the headers",
1386 even if body_only or headers_only was set. It now gives an appropriate
1387 message.
1388
87fcc8b9
PH
1389PH/09 Applied a patch from the Sieve maintainer which:
1390
1391 o fixes some comments
1392 o adds the (disabled) notify extension core
1393 o adds some debug output for the result of if/elsif tests
1394 o points to the current vacation draft in the documentation
1395 and documents the missing references header update
1396
1397 and most important:
1398
1399 o fixes a bug in processing the envelope test (when testing
1400 multiple envelope elements, the last element determinted the
1401 result)
1402
456682f5
PH
1403PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1404 Electronic Mail") by including:
1405
1406 Auto-submitted: auto-generated
1407
1408 in the messages that it generates (bounce messages and others, such as
1409 warnings). In the case of bounce messages for non-SMTP mesages, there was
1410 also a typo: it was using "Auto_submitted" (underscore instead of
1411 hyphen). Since every message generated by Exim is necessarily in response
1412 to another message, thes have all been changed to:
1413
1414 Auto-Submitted: auto-replied
1415
1416 in accordance with these statements in the RFC:
1417
1418 The auto-replied keyword:
1419
1420 - SHOULD be used on messages sent in direct response to another
1421 message by an automatic process,
1422
1423 - MUST NOT be used on manually-generated messages,
1424
1425 - MAY be used on Delivery Status Notifications (DSNs) and Message
1426 Disposition Notifications (MDNs),
1427
1428 - MUST NOT be used on messages generated by automatic or periodic
1429 processes, except for messages which are automatic responses to
1430 other messages.
1431
3e46c1aa
PH
1432PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1433 to the default Received: header definition.
456682f5 1434
49826d12
PH
1435PH/12 Added log selector acl_warn_skipped (default on).
1436
eba0c039
PH
1437PH/13 After a successful wildlsearch lookup, discard the values of numeric
1438 variables because (a) they are in the wrong storage pool and (b) even if
1439 they were copied, it wouldn't work properly because of the caching.
1440
a0d6ba8a
PH
1441PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1442 checking when decoding. Apparently there are clients that generate
1443 overlong encoded strings. Why am I not surprised?
1444
f0917727
PH
1445PH/15 If the first argument of "${if match_address" was not empty, but did not
1446 contain an "@" character, Exim crashed. Now it writes a panic log message
1447 and treats the condition as false.
1448
096fee00
PH
1449PH/16 In autoreply, treat an empty string for "once" the same as unset.
1450
024bd3c2
PH
1451PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1452 extension "envelope-auth". The code is finished and in agreement with
1453 other implementations, but there is no documentation so far and in fact,
1454 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1455 not changing the active code.
1456
1457 Print executed "if" and "elsif" statements when debugging is used. This
1458 helps a great deal to understand what a filter does.
1459
1460 Document more things not specified clearly in RFC3028. I had all this
1461 sorted out, when out of a sudden new issues came to my mind. Oops."
1462
df199fec
PH
1463PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1464 (Bugzilla #53).
1465
d27f1df3
PH
1466PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1467 canonical form (as documented). However, after a host name lookup from
1468 the IP address, check_host() was doing a simple string comparison with
1469 addresses acquired from the DNS when checking that the found name did
1470 have the original IP as one of its addresses. Since any found IPv6
1471 addresses are likely to be in abbreviated form, the comparison could
1472 fail. Luckily, there already exists a function for doing the comparison
1473 by converting both addresses to binary, so now that is used instead of
1474 the text comparison.
1475
96776534
PH
1476PH/20 There was another similar case to PH/19, when a complete host name was
1477 given in a host list; looking up its IP address could give an abbreviated
1478 form, whereas the current host's name might or might not be abbreviated.
1479 The same fix has been applied.
1480
5de37277 1481
9a799bc0
PH
1482Exim version 4.54
1483-----------------
1484
1485PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1486 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1487 It now does.
1488
99a4b039
PH
1489PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1490 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1491
1492PH/03 Typo: missing ".o" in src/pcre/Makefile.
1493
4b233853
PH
1494PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1495 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1496 Also, for "Auto-Submitted", treat anything other than "no" as
1497 non-personal, in accordance with RFC 3834. (Previously it treated
1498 anything starting "auto-" as non-personal.)
1499
8857ccfd
PH
1500TF/01 The control=submission/name=... option had a problem with syntax
1501 errors if the name included a slash character. The /name= option
1502 now slurps the rest of the string, so it can include any characters
1503 but it must come last in the list of options (after /sender_retain
1504 or /domain=).
1505
433a2980
PH
1506PH/05 Some modifications to the interface to the fake nameserver for the new
1507 testing suite.
1508
3e46c1aa 1509
9a799bc0 1510
e3a311ba
TK
1511Exim version 4.53
1512-----------------
1513
1514TK/01 Added the "success_on_redirect" address verification option. See
1515 NewStuff for rationale and an example.
1516
13b685f9
PH
1517PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1518
395ff96d
PH
1519PH/02 Patch to exigrep to allow it to work on syslog lines.
1520
5b68f6e4
PH
1521PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1522 fread() to skip over the body file's header line, because in Cygwin the
1523 header line is locked and is inaccessible.
1524
1ab52c69
PH
1525PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1526 co-exist for some time) to make it clear that it is the Exim ID that is
1527 referenced, not the Message-ID: header line.
1528
b07e6aa3
PH
1529PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1530 string_format() function, because snprintf() does not exist on all
1531 operating systems.
1532
254e032f
PH
1533PH/06 The use of forbid_filter_existstest now also locks out the use of the
1534 ${stat: expansion item.
1535
3af76a81
PH
1536PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1537 protocol synchronization error", to keep the pedants happy.
1538
2548ba04
PH
1539PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1540 well as for IRIX systems, when gcc is being used. See the host.c source
1541 file for comments.
1542
b6c6011d
PH
1543PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1544
cf39cf57
PH
1545PH/10 Named domain lists were not working if used in a queue_smtp_domains
1546 setting.
1547
f1513293
PH
1548PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1549 transport and to the smtp transport in LMTP mode.
1550
727549a4
PH
1551TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1552
af46795e
PH
1553PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1554 run a filter in a subprocess. This could lead to confusion in subsequent
1555 lookups in the parent process. There should also be a search_tidyup() at
1556 the end of the subprocess.
1557
d7b47fd0
PH
1558PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1559 only if the host matched helo_try_verify_hosts, which caused the
1560 verification to occur when the EHLO/HELO command was issued. The ACL just
1561 tested the remembered result. Now, if a previous verification attempt has
1562 not happened, "verify = helo" does it there and then.
1563
ee744174
JJ
1564JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1565
b582ab87
PH
1566TK/03 Fix log output including CR from clamd.
1567
41a13e0a
PH
1568PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1569 exist provoked a memory error which could cause a segfault.
1570
f625cc5a
PH
1571PH/15 Installed PCRE 6.2
1572
1573PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1574
21f7af35
PH
1575PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1576 of the problem. Specifically, suggested +O2 rather than +O1 for the
1577 HP-UX compiler.
1578
31480e42
PH
1579PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1580
2d280592
PH
1581PH/20 If a delivery was routed to a non-standard port by means of an SRV
1582 record, the port was not correctly logged when the outgoing_port log
1583 selector was set (it logged the transort's default port).
1584
7cd1141b
PH
1585PH/21 Added support for host-specific ports to manualroute, queryprogram,
1586 fallback_hosts, and "hosts" in the smtp transport.
1587
1588PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1589 host errors such as "Connection refused".
1590
750af86e
PH
1591PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1592 authentication with radiusclient 0.4.9:
1593
1594 - Error returned from rc_read_config was caught wrongly
1595 - Username/password not passed on to radius server due to wrong length.
1596
1597 The presumption is that some radiusclient API changes for 4.51/PH/17
1598 were not taken care of correctly. The code is still untested by me (my
1599 Linux distribution still has 0.3.2 of radiusclient), but it was
1600 contributed by a Radius user.
1601
1602PH/24 When doing a callout, the value of $domain wasn't set correctly when
1603 expanding the "port" option of the smtp transport.
1604
4304270b
TK
1605TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1606 while reading a MIME header. Thanks to Tom Hughes for a patch.
1607
750af86e
PH
1608PH/24 Include config.h inside local_scan.h so that configuration settings are
1609 available.
1610
64ffc24f
PH
1611PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1612 that in an ACL for RCPT (for example), you can examine exactly what was
1613 received.
1614
5dd9625b
PH
1615PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1616 commands, but it was not correctly comparing the address with the actual
1617 client host address. Thus, it would show the EHLO address in Received:
1618 header lines when this was not necessary.
1619
5591031b
PH
1620PH/27 Added the % operator to ${eval:}.
1621
ba18e66a
PH
1622PH/28 Exim tries to create and chdir to its spool directory when it starts;
1623 it should be ignoring failures (because with -C, for example, it has lost
1624 privilege). It wasn't ignoring creation failures other than "already
1625 exists".
1626
9cec981f
PH
1627PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1628 -bV or -d is used.
1629
aa2b5c79
PH
1630PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1631 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1632 too many continuations, the temporary file was not being removed, and the
1633 return code was incorrect.
aa2b5c79 1634
48a53b7f
PH
1635PH/31 Missing "BOOL" in function definition in filtertest.c.
1636
1c59d63b
PH
1637PH/32 Applied Sieve patches from the maintainer.
1638
671012da
TK
1639TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1640
1509d3a8
PH
1641PH/33 Added "verify = not_blind".
1642
1643PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1644 Local/Makefile (with some defaults set). These are used in built scripts
1645 such as exicyclog, but they have never been used in the exim_install
1646 script (though there are many overriding facilities there). I have
1647 arranged that the exim_install script now takes note of these two
1648 settings.
1649
1650PH/35 Installed configuration files for Dragonfly.
1651
2fe1a124
PH
1652PH/36 When a locally submitted message by a trusted user did not contain a
1653 From: header, and the sender address was obtained from -f or from an SMTP
1654 MAIL command, and the trusted user did not use -F to supply a sender
1655 name, $originator_name was incorrectly used when constructing a From:
1656 header. Furthermore, $originator_name was used for submission mode
1657 messages from external hosts without From: headers in a similar way,
1658 which is clearly wrong.
1659
8800895a
PH
1660PH/37 Added control=suppress_local_fixups.
1661
ccfdb010
PH
1662PH/38 When log_selector = +received_sender was set, and the addition of the
1663 sender made the log line's construction buffer exactly full, or one byte
1664 less than full, an overflow happened when the terminating "\n" was
1665 subsequently added.
1666
1130bfb0
PH
1667PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1668 when the result of a list match is failure because a DNS lookup failed.
1669
ebcb507f
PH
1670PH/40 RM_COMMAND is now used in the building process.
1671
c35e155c
PH
1672PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1673 the "build-* directories that it finds.
1674
95d1f782
PH
1675PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1676 address in a domain literal was a prefix of an interface address.
1677
fd6de02e
PH
1678PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1679 when verifying a sender address, unless rewrite_headers is false.
1680
58de37c5
PH
1681PH/44 Wrote a long comment about why errors_to addresses are verified as
1682 recipients, not senders.
1683
261cf466
TF
1684TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1685 the ratelimit ACL was added.
1686
3ee512ff
PH
1687PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1688
e08c430f
PH
1689PH/46 Added extra information about PostgreSQL errors to the error string.
1690
bef5a11f
PH
1691PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1692 avoiding the need to install special zones in a real server. This is
1693 backwards compatible; if it can't find the fake resolver, it drops back.
1694 Thus, both old and new test suites can be run.
1695
7546de58
TF
1696TF/02 Added util/ratelimit.pl
1697
e5d5a95f
TF
1698TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1699 clock is set back in time.
1700
2e88a017
TF
1701TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1702 Candler <B.Candler@pobox.com>.
1703
a5f65aa4
TF
1704TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1705 OK for addresses that are the result of redirections.
1706
e7726cbf
PH
1707PH/48 A number of further additions for the benefit of the new test suite,
1708 including a fake gethostbyname() that interfaces to the fake DNS resolver
1709 (see PH/47 above).
1710
a7fdad5b
TF
1711TF/06 The fix for widen_domains has also been applied to qualify_single and
1712 search_parents which are the other dnslookup options that can cause
1713 header rewrites.
1714
6af56900
PH
1715PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1716 type ("H").
1717
0925ede6
PH
1718PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1719
66afa403
TF
1720TF/07 Exim produced the error message "an SRV record indicated no SMTP
1721 service" if it encountered an MX record with an empty target hostname.
1722 The message is now "an MX or SRV record indicated no SMTP service".
1723
0154e85a
TF
1724TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1725 if the DNS of the sending site is misconfigured. This is quite a
1726 common situation. This change restores the behaviour of treating a
1727 helo verification defer as a failure.
1728
16f12c76
PH
1729PH/51 If self=fail was set on a router, the bounce message did not include the
1730 actual error message.
1731
bbe902f0 1732
e5a9dba6
PH
1733Exim version 4.52
1734-----------------
1735
1736TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1737
22c3b60b
PH
1738PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1739 command itself ended in error, the underlying message about the transport
1740 filter timeout was being overwritten with the pipe command error. Now the
1741 underlying error message should be appended to the second error message.
1742
06a9b4b5
PH
1743TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1744
c1ac6996
PH
1745PH/02 Reduce the amount of output that "make" produces by default. Full output
1746 can still be requested.
1747
9c7a242c
PH
1748PH/03 The warning log line about a condition test deferring for a "warn" verb
1749 was being output only once per connection, rather than after each
1750 occurrence (because it was using the same function as for successful
1751 "warn" verbs). This seems wrong, so I have changed it.
1752
87ba3f5f
PH
1753TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1754 it should not have, which might have caused a crash in the right
1755 circumstances, but probably never did.
1756
1757PH/04 Installed a modified version of Tony Finch's patch to make submission
1758 mode fix the return path as well as the Sender: header line, and to
1759 add a /name= option so that you can make the user's friendly name appear
1760 in the header line.
1761
29aba418
TF
1762TF/03 Added the control = fakedefer ACL modifier.
1763
fe0dab11
TF
1764TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1765 Mark Lowes for thorough testing.
870f6ba8 1766
11d337a4
TK
1767TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1768
1769TK/03 Merged latest SRS patch from Miles Wilton.
1770
415c8f3b
PH
1771PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1772 with the definition in sysexits.h (which is #included earlier).
1773 Fortunately, Exim does not actually use EX_OK. The code used to try to
1774 preserve the sysexits.h value, by assumimg that macro definitions were
1775 scanned for macro replacements. I have been disabused of this notion,
1776 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1777
958541e9
PH
1778PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1779 in the smtp transport. When a block could not be written in a single
1780 write() function, the timeout was being re-applied to each part-write.
1781 This seems wrong - if the receiver was accepting one byte at a time it
1782 would take for ever. The timeout is now adjusted when this happens. It
1783 doesn't have to be particularly precise.
1784
c206415f
TK
1785TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1786 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1787
2a4be8f9
PH
1788PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1789 without a domain if the check to <postmaster@domain> fails.
1790
1cba11c5
SC
1791SC/01 Eximstats: added -xls and the ability to specify output files
1792 (patch written by Frank Heydlauf).
1793
1794SC/02 Eximstats: use FileHandles for outputing results.
1795
1796SC/03 Eximstats: allow any combination of xls, txt, and html output.
1797
1798SC/04 Eximstats: fixed display of large numbers with -nvr option
1799
1800SC/05 Eximstats: fixed merging of reports with empty tables.
1801
1802SC/06 Eximstats: added the -include_original_destination flag
1803
1804SC/07 Eximstats: removed tabs and trailing whitespace.
1805
1005d00e
TK
1806TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1807
1808TK/06 MBOX spool code: Add real "From " MBOX separator line
1809 so the .eml file is really in mbox format (even though
1810 most programs do not really care). Patch from Alex Miller.
1811
1812TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1813 The latter is generated from $received_to and is only set if the
1814 message has one envelope recipient. SA can use these headers,
1815 obviously out-of-the-box. Patch from Alex Miller.
1816
9b4768fa
PH
1817PH/08 The ${def test on a variable was returning false if the variable's
1818 value was "0", contrary to what the specification has always said!
1819 The result should be true unless the variable is empty.
1820
1821PH/09 The syntax error of a character other than { following "${if
1822 def:variable_name" (after optional whitespace) was not being diagnosed.
1823 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1824 accidental colon was present, for example, could give incorrect results.
1825
0d7eb84a
PH
1826PH/10 Tidied the code in a number of places where the st_size field of a stat()
1827 result is used (not including appendfile, where other changes are about
1828 to be made).
1829
1830PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1831 This involved changing a lot of size variables from int to off_t. It
1832 should work with maildirs and everything.
1833
40727bee
TK
1834TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1835 spamd dying while we are connected to it.
1836
554d2369
TF
1837TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1838 <jgh@wizmail.org>
1839
1f922db1
PH
1840PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1841 function for BDB 4.3.
1842
ef213c3b
PH
1843PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1844
8ac170f3
PH
1845PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1846 the sources for PCRE have been re-arranged and more files are now
1847 involved.
1848
b1c749bb
PH
1849PH/15 The code I had for printing potentially long long variables in PH/11
1850 above was not the best (it lost precision). The length of off_t variables
1851 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1852 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1853 to be "long long int" or "long int". This is needed for the internal
1854 formatting function string_vformat().
b1c749bb 1855
4aac9b49
PH
1856PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1857 the configuration file to be ":syslog", then the script "guesses" where
1858 the logs files are, rather than using the compiled in default. In our
1859 case the guess is not the same as the compiled default, so the script
1860 suddenly stopped working when I started to use syslog. The patch checks
1861 to see if log_file_path is "". If so, it attempts to read it from exim
1862 with no configuration file to get the compiled in version, before it
1863 falls back to the previous guessing code."
1864
294520c8
TK
1865TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1866 implementing BATV in an Exim configuration. See NewStuff for the gory
1867 details.
1868
5bd022fe
PH
1869PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1870 Makefile that are specific to HP-UX.
1871
90e9ce59
PH
1872PH/18 If the "use_postmaster" option was set for a recipient callout together
1873 with the "random" option, the postmaster address was used as the MAIL
1874 FROM address for the random test, but not for the subsequent recipient
1875 test. It is now used for both.
1876
5ea81592
PH
1877PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1878 patch removes a few documentation additions to RFC 3028, because the
1879 latest draft now contains them. It adds the new en;ascii-case comparator
1880 and a new error check for 8bit text in MIME parts. Comparator and
1881 require names are now matched exactly. I enabled the subaddress
1882 extension, but it is not well tested yet (read: it works for me)."
1883
c6c2dc1d
PH
1884PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1885 rework some of the code of TK/09 above to avoid the hardwired use of
1886 "%lld" and "long long". Replaced the call to snprintf() with a call to
1887 string_vformat().
1888
fffffe4c
PH
1889PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1890 records point to non-existent hosts", "retry timeout exceeded", and
1891 "retry time not reached for any host after a long failure period".
ca02eafb 1892
9a26b6b2
PH
1893PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1894 experimental DomainKeys support:
1895
1896 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1897 (2) On an error such as an illegally used "control", the wrong name for
1898 the control was given.
1899
1900 These problems did NOT occur unless DomainKeys support was compiled.
1901
4aee0225
PH
1902PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1903
32d668a5
PH
1904PH/24 Added ${if match_ip condition.
1905
8187c3f3
PH
1906PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1907 databases so that it will be absolutely obvious if a crash occurs in the
1908 DB library. This is a regular occurrence (often caused by mis-matched
1909 db.h files).
1910
ff790e47 1911PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1912 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1913 picked up on a user's system that detects such things. There doesn't seem
1914 to be a gcc warning option for this - only an attribute that has to be
1915 put on the function's prototype. It seems that in Fedora Core 4 they have
1916 set this on a number of new functions. No doubt there will be more in due
1917 course.
ff790e47 1918
5417f6d1
PH
1919PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1920 specify a transport. However, if an address that was verified by such a
1921 router was the subject of a callout, Exim crashed because it tried to
1922 read the rcpt_include_affixes from the non-existent transport. Now it
1923 just assumes that the setting of that option is false. This bug was
1924 introduced by 4.51/PH/31.
1925
59cf8544
PH
1926PH/28 Changed -d+all to exclude +memory, because that information is very
1927 rarely of interest, but it makes the output a lot bigger. People tend to
1928 do -d+all out of habit.
1929
e7ad8a65
PH
1930PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1931 code in os-type was giving problems when libc.so lives in lib64, like on
1932 x86_64 Fedora Core.
1933
ade42478
PH
1934PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1935 aren't the modern standard, and it seems that some systems' include files
1936 don't always have them. Exim was already checking for some of the newer
1937 ones like T_AAAA, and defining it itself. I've added checks for all the
1938 record types that Exim uses.
1939
182ad5cf
PH
1940PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1941 not automatically generating a new one, as it is supposed to. This
1942 prevented TLS from working. If the file did exist, but contained invalid
1943 data, a new version was generated, as expected. It was only the case of a
1944 non-existent file that was broken.
1945
b0d9fc80
TK
1946TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1947 with a change in libdomainkeys > 0.64.
1948
1949TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1950 from DNS. If the selector record carries the flag, it now has
1951 precedence over the domain-wide flag.
1952
1953TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1954
47c7a64a
PH
1955PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1956 the use of a port name that isn't defined in /etc/services) occurred, the
1957 message was deferred as in a normal delivery, and thus remained on the
1958 spool, instead of being failed because of the mua_wrapper setting. This
1959 is now fixed, and I tidied up some of the mua_wrapper messages at the
1960 same time.
1961
a388bce4
SC
1962SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1963 the messages in a hash of arrays rather than using individual hashes.
1964 This is a bit cleaner and results in dramatic memory savings, albeit
1965 at a slight CPU cost.
1966
1967SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1968 as requested by Marc Sherman.
1969
1970SC/10 Eximstats: added histograms for user specified patterns as requested
1971 by Marc Sherman.
1972
0793e4ed
SC
1973SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1974
c58b88df
PH
1975PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1976 fopen() in the content-scanning modules that did not already have it.
1977
e7ad8a65 1978
7982096b
PH
1979Exim version 4.51
1980-----------------
1981
1a46a8c5
PH
1982TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1983 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1984
2f079f46 1985TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1986
1987TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1988
1989PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1990 to test Sieve filters that use "vacation".
1991
1992PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1993 that changes the way the GnuTLS parameters are stored in the cache file.
1994 The new format can be generated externally. For backward compatibility,
1995 if the data in the cache doesn't make sense, Exim assumes it has read an
1996 old-format file, and it generates new data and writes a new file. This
1997 means that you can't go back to an older release without removing the
1998 file.
1999
2000PH/03 A redirect router that has both "unseen" and "one_time" set does not
2001 work if there are any delivery delays because "one_time" forces the
2002 parent to be marked "delivered", so its unseen clone is never tried
2003 again. For this reason, Exim now forbids the simultaneous setting of
2004 these two options.
2005
2006PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
2007 redirected to themselves ("homonym" addresses). Read the long ChangeLog
2008 entry if you want to know the details. The fix, however, neglected to
2009 consider the case when local delivery batching is involved. The test for
2010 "previously delivered" was not happening when checking to see if an
2011 address could be batched with a previous (undelivered) one; under
2012 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 2013 address.
1a46a8c5
PH
2014
2015PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
2016 in its include files, and this causes problems building Exim.
2017
2018PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
2019 header_syntax) but Exim was just ignoring anything given after a slash.
2020 In particular, this caused confusion with an attempt to use "verify =
2021 reverse_host_lookup/defer_ok". An error is now given when options are
2022 supplied for verify items that do not have them. (Maybe reverse_host_
2023 lookup should have a defer_ok option, but that's a different point.)
2024
2025PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
2026 defined by RFC 821) to 2048, because there were problems with some AUTH
2027 commands, and RFC 1869 says the size should be increased for extended
2028 SMTP commands that take arguments.
2029
2030PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
2031 Finch).
2032
2033PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
2034 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 2035
49c2d5ea
PH
2036PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
2037 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
2038 whatever). Otherwise the password may appear in the log. Following change
2039 PH/42 below, there is no longer a chance of it appearing in a bounce
2040 message.
49c2d5ea 2041
bf759a8b
PH
2042PH/11 Installed exipick version 20050225.0 from John Jetmore.
2043
83364d30
PH
2044PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2045 of its addresses was ever tried. (Bugzilla bug #2.)
2046
7999bbd7
PH
2047PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2048 the result incorrectly in the debug output. (It correctly added a newline
2049 to what was transported.)
2050
7dbf77c9
PH
2051TF/01 Added $received_time.
2052
74e0617f
PH
2053PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2054 commented out examples of how to interface to a virus scanner and to
2055 SpamAssassin. Also added commented examples of av_scanner and
2056 spamd_address settings.
2057
2f079f46
PH
2058PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2059 and controls are allowed in which ACLs. There were a couple of minor
2060 errors. Some of the entries in the conditions table (which is a table of
2061 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2062 negation of where the condition IS allowed.
2063
8c841523
PH
2064PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2065
7766a4f0
PH
2066PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2067 header file does not have a version number, so I've had to invent a new
2068 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2069 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2070 radiusclient), but it was contributed by a Radius user.
2071
8b417f2c
PH
2072PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2073 files or directories, for OpenSSL.
2074
901f42cb
PH
2075PH/19 When an Exim process that is running as root has to create an Exim log
2076 file, it does so in a subprocess that runs as exim:exim so as to get the
2077 ownership right at creation (otherwise, other Exim processes might see
2078 the file with the wrong ownership). There was no test for failure of this
2079 fork() call, which would lead to the process getting stuck as it waited
2080 for a non-existent subprocess. Forks do occasionally fail when resources
2081 run out. I reviewed all the other calls to fork(); they all seem to check
2082 for failure.
2083
f9b9210e
PH
2084PH/20 When checking for unexpected SMTP input at connect time (before writing
2085 the banner), Exim was not dealing correctly with a non-positive return
2086 from the read() function. If the client had disconnected by this time,
2087 the result was a log entry for a synchronization error with an empty
2088 string after "input=" when read() returned zero. If read() returned -1
2089 (an event I could not check), uninitialized data bytes were printed.
2090 There were reports of junk text (parts of files, etc) appearing after
2091 "input=".
2092
54cdb463
PH
2093PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2094
cf00dad6
PH
2095PH/22 Added support for macro redefinition, and (re)definition in between
2096 driver and ACL definitions.
2097
acb1b346
PH
2098PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2099 forgetting to use the resulting value; it was using the unexpanded value.
2100
c5ddb310
PH
2101PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2102 hadn't been configured. The fix is from Juergen Kreileder, who
2103 understands it better than I do:
2104
2105 "Here's what I see happening with three configured cyrus_sasl
2106 authenticators configured (plain, login, cram-md5):
2107
2108 On startup auth_cyrus_sasl_init() gets called for each of these.
2109 This means three calls to sasl_listmech() without a specified mech_list.
2110 => SASL tests which mechs of all available mechs actually work
2111 => three warnings about OTP not working
2112 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2113
2114 With the patch, sasl_listmech() also gets called three times. But now
2115 SASL's mech_list option is set to the server_mech specified in the the
2116 authenticator. Or in other words, the answer from sasl_listmech()
2117 gets limited to just the mech you're testing for (which is different
2118 for each call.)
2119 => the return list contains just 'plain' or 'login', 'cram-md5' or
2120 nothing depending on the value of ob->server_mech.
2121
2122 I've just tested the patch: Authentication still works fine,
2123 unavailable mechs specified in the exim configuration are still
2124 caught, and the auth.log warnings about OTP are gone."
2125
31619da6
PH
2126PH/25 When debugging is enabled, the contents of the command line are added
2127 to the debugging output, even when log_selector=+arguments is not
2128 specified.
2129
bebaf0fc
PH
2130PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2131 answer is "GNU", and only if the return is "GNU/something" is the answer
2132 "Linux".
2133
475fe28a
PH
2134PH/27 $acl_verify_message is now set immediately after the failure of a
2135 verification in an ACL, and so is available in subsequent modifiers. In
2136 particular, the message can be preserved by coding like this:
2137
2138 warn !verify = sender
2139 set acl_m0 = $acl_verify_message
2140
2141 Previously, $acl_verify_message was set only while expanding "message"
2142 and "log_message" when a very denied access.
2143
7e8bec7a
PH
2144PH/28 Modified OS/os.c-Linux with
2145
2146 -#ifndef OS_LOAD_AVERAGE
2147 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2148
2149 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2150 nomenclature these days.)
2151
e4a89c47
PH
2152PH/29 Installed patch from the Sieve maintainer that adds the options
2153 sieve_useraddress and sieve_subaddress to the redirect router.
2154
5ca2a9a1
PH
2155PH/30 In these circumstances:
2156 . Two addresses routed to the same list of hosts;
2157 . First host does not offer TLS;
2158 . First host accepts first address;
2159 . First host gives temporary error to second address;
2160 . Second host offers TLS and a TLS session is established;
2161 . Second host accepts second address.
2162 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2163 and peerdn, if requested) that were in fact used only for the second
2164 address.
7e8bec7a 2165
c688b954
PH
2166PH/31 When doing a callout as part of verifying an address, Exim was not paying
2167 attention to any local part prefix or suffix that was matched by the
2168 router that accepted the address. It now behaves in the same way as it
2169 does for delivery: the affixes are removed from the local part unless
2170 rcpt_include_affixes is set on the transport.
2171
fed77020
PH
2172PH/32 Add the sender address, as F=<...>, to the log line when logging a
2173 timeout during the DATA phase of an incoming message.
2174
7fe1560f
PH
2175PH/33 Sieve envelope tests were broken for match types other than :is. I have
2176 applied a patch sanctioned by the Sieve maintainer.
c688b954 2177
ebb6e6d5
PH
2178PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2179 the uid or gid is negative. A case of a negative gid caused this to be
2180 noticed. The fix allows for either to be negative.
2181
9c4e8f60
PH
2182PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2183 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2184 overlooked.
2185
2186PH/36 The change PH/12 above was broken. Fixed it.
2187
d7174846
PH
2188PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2189 the grounds that routing the same address twice would always produce the
2190 same answer. This might have been true once, but it is certainly no
2191 longer true now. Routing a child address may depend on the previous
2192 routing that produced that child. Some complicated redirection strategies
2193 went wrong when messages had multiple recipients, and made Exim's
2194 behaviour dependent on the order in which the addresses were given.
2195
2196 I have moved the duplicate checking until after the routing is complete.
2197 Exim scans the addresses that are assigned to local and remote
2198 transports, and removes any duplicates. This means that more work will be
2199 done, as duplicates will always all be routed, but duplicates are
2200 presumably rare, so I don't expect this is of any significance.
2201
2202 For deliveries to pipes, files, and autoreplies, the duplicate checking
2203 still happens during the routing process, since they are not going to be
2204 routed further.
2205
cfe75fc3
PH
2206PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2207 It corrects a timeout issue with spamd. This is Ian's comment: "The
2208 background is that sometimes spamd either never reads data from a
2209 connection it has accepted, or it never writes response data. The exiscan
2210 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2211 blindly assumes that writes won't block so it may never time out."
2212
be22d70e
PH
2213PH/39 Allow G after quota size as well as K and M.
2214
0612b098
PH
2215PH/40 The value set for $authenticated_id in an authenticator may not contain
2216 binary zeroes or newlines because the value is written to log lines and
2217 to spool files. There was no check on this. Now the value is run through
2218 the string_printing() function so that such characters are converted to
2219 printable escape sequences.
2220
2e0c1448
PH
2221PH/41 $message_linecount is a new variable that contains the total number of
2222 lines in the message. Compare $body_linecount, which is the count for the
2223 body only.
2224
447d236c
PH
2225PH/42 Exim no longer gives details of delivery errors for specific addresses in
2226 bounce and delay warning messages, except in certain special cases, which
2227 are as follows:
2228
2229 (a) An SMTP error message from a remote host;
2230 (b) A message specified in a :fail: redirection;
2231 (c) A message specified in a "fail" command in a system filter;
2232 (d) A message specified in a FAIL return from the queryprogram router;
2233 (e) A message specified by the cannot_route_message router option.
2234
2235 In these cases only, Exim does include the error details in bounce and
2236 warning messages. There are also a few cases where bland messages such
2237 as "unrouteable address" or "local delivery error" are given.
2238
d20976dc
PH
2239PH/43 $value is now also set for the "else" part of a ${run expansion.
2240
f656d135
PH
2241PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2242 being worked on, but at least Exim now implements the latest version to
2243 play with."
2244
2e2a30b4
PH
2245PH/45 In a pipe transport, although a timeout while waiting for the pipe
2246 process to complete was treated as a delivery failure, a timeout while
2247 writing the message to the pipe was logged, but erroneously treated as a
2248 successful delivery. Such timeouts include transport filter timeouts. For
2249 consistency with the overall process timeout, these timeouts are now
2250 treated as errors, giving rise to delivery failures by default. However,
2251 there is now a new Boolean option for the pipe transport called
2252 timeout_defer, which, if set TRUE, converts the failures into defers for
2253 both kinds of timeout. A transport filter timeout is now identified in
2254 the log output.
2255
9176e9f0
PH
2256PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2257 systems where "make" and "gmake" are different, calling "gmake" at top
2258 level broke things. I've arranged for the value of $(MAKE) to be passed
2259 from the Makefile to this script so that it can call the same version of
2260 "make".
2261
7982096b 2262
bbe902f0
PH
2263A note about Exim versions 4.44 and 4.50
2264----------------------------------------
2265
2266Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2267changes of various kinds. As a consequence, a big documentation update was
2268needed. This delayed the release for rather longer than seemed good, especially
2269in the light of a couple of (minor) security issues. Therefore, the changes
2270that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2271release. So 4.44 and 4.50 are in effect two different branches that both start
2272from 4.43.
2273
2274I have left the 4.50 change log unchanged; it contains all the changes since
22754.43. The change log for 4.44 is below; many of its items are identical to
2276those for 4.50. This seems to be the most sensible way to preserve the
2277historical information.
2278
2279
f7b63901 2280Exim version 4.50
495ae4b0
PH
2281-----------------
2282
5fe762f6
PH
2283 1. Minor wording change to the doc/README.SIEVE file.
2284
139059f6 2285 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2286 computation of the current number of files was incorrect.
495ae4b0 2287
7086e875
PH
2288 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2289 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2290 place.
2291
35af9f61
PH
2292 4. Give more explanation in the error message when the command for a transport
2293 filter fails to execute.
2294
b668c215
PH
2295 5. There are several places where Exim runs a non-Exim command in a
2296 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2297 was being done only for the command run by the queryprogram router. It is
2298 now done for all such subprocesses. The other cases are: ${run, transport
2299 filters, and the commands run by the lmtp and pipe transports.
2300
a494b1e1
PH
2301 6. Added CONFIGURE_GROUP build-time option.
2302
2303 7. Some older OS have a limit of 256 on the maximum number of file
2304 descriptors. Exim was using setrlimit() to set 1000 as a large value
2305 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2306 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2307
c5fcb476
PH
2308 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2309 was an oversight, and furthermore, ever since the addition of extra
2310 controls (e.g. 4.43/32), the checks on when to allow different forms of
2311 "control" were broken. There should now be diagnostics for all cases when a
2312 control that does not make sense is encountered.
2313
69358f02
PH
2314 9. Added the /retain_sender option to "control=submission".
2315
5be20824
PH
231610. $recipients is now available in the predata ACL (oversight).
2317
eb2c0248
PH
231811. Tidy the search cache before the fork to do a delivery from a message
2319 received from the command line. Otherwise the child will trigger a lookup
2320 failure and thereby defer the delivery if it tries to use (for example) a
2321 cached ldap connection that the parent has called unbind on.
2322
2a3eea10
PH
232312. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2324 of $address_data from the recipient verification was clobbered by the
2325 sender verification.
2326
232713. The value of address_data from a sender verification is now available in
2328 $sender_address_data in subsequent conditions in the ACL statement.
2329
23c7ff99
PH
233014. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2331
4deaf07d
PH
233215. Added a new option "connect=<time>" to callout options, to set a different
2333 connection timeout.
2334
926e1192
PH
233516. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2336 was its contents. (It was OK if the option was not defined at all.)
2337
650edc6f
PH
233817. A "Completed" log line is now written for messages that are removed from
2339 the spool by the -Mrm option.
2340
2c7db3f5
PH
234118. New variables $sender_verify_failure and $recipient_verify_failure contain
2342 information about exactly what failed.
2343
3d235903
PH
234419. Added -dd to debug only the daemon process.
2345
7c7ad977
PH
234620. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2347 handles timeouts, both on the server side and network timeouts. Renamed the
2348 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2349
981756db
PH
235021. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2351 It is now set to "smtps".
2352
d4eb88df
PH
235322. $host_address is now set to the target address during the checking of
2354 ignore_target_hosts.
2355
235623. When checking ignore_target_hosts for an ipliteral router, no host name was
2357 being passed; this would have caused $sender_host_name to have been used if
2358 matching the list had actually called for a host name (not very likely,
2359 since this list is usually IP addresses). A host name is now passed as
2360 "[x.x.x.x]".
2361
7d468ab8
PH
236224. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2363 code that specifies a non-restarting handler (typically sigaction() in
2364 modern systems) in an attempt to fix a rare and obscure crash bug.
2365
236625. Narrowed the window for a race in the daemon that could cause it to ignore
2367 SIGCHLD signals. This is not a major problem, because they are used only to
2368 wake it up if nothing else does.
2369
62c0818f
PH
237026. A malformed maildirsize file could cause Exim to calculate negative values
2371 for the mailbox size or file count. Odd effects could occur as a result.
2372 The maildirsize information is now recalculated if the size or filecount
2373 end up negative.
2374
26034054
PH
237527. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2376 support for a long time. Removed HAVE_SYS_VFS_H.
2377
af66f652
PH
237828. Installed the latest version of exipick from John Jetmore.
2379
90af77f4
PH
238029. In an address list, if the pattern was not a regular expression, an empty
2381 subject address (from a bounce message) matched only if the pattern was an
2382 empty string. Non-empty patterns were not even tested. This was the wrong
2383 because it is perfectly reasonable to use an empty address as part of a
2384 database query. An empty address is now tested by patterns that are
2385 lookups. However, all the other forms of pattern expect the subject to
2386 contain a local part and a domain, and therefore, for them, an empty
2387 address still always fails if the pattern is not itself empty.
2388
d8ef3577
PH
238930. Exim went into a mad DNS loop when attempting to do a callout where the
2390 host was specified on an smtp transport, and looking it up yielded more
2391 than one IP address.
2392
5cb8cbc6
PH
239331. Re-factored the code for checking spool and log partition space into a
2394 function that finds that data and another that does the check. The former
2395 is then used to implement four new variables: $spool_space, $log_space,
2396 $spool_inodes, and $log_inodes.
2397
14702f5b
PH
239832. The RFC2047 encoding function was originally intended for short strings
2399 such as real names; it was not keeping to the 75-character limit for
2400 encoded words that the RFC imposes. It now respects the limit, and
2401 generates multiple encoded words if necessary. To be on the safe side, I
2402 have increased the buffer size for the ${rfc2047: expansion operator from
2403 1024 to 2048 bytes.
2404
063b1e99
PH
240533. It is now permitted to omit both strings after an "if" condition; if the
2406 condition is true, the result is "true". As before, when the second string
2407 is omitted, a false condition yields an empty string. This makes it less
2408 cumbersome to write custom ACL and router conditions.
2409
652e1b65
PH
241034. Failure to deliver a bounce message always caused it to be frozen, even if
2411 there was an errors_to setting on the router. The errors_to setting is now
2412 respected.
2413
6f0c9a4f
PH
241435. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2415 canonical form (fully expanded) before being placed in
2416 $sender_host_address.
2417
33397d19
PH
241836. The table in the code that translates DNS record types into text (T_A to
2419 "A" for instance) was missing entries for NS and CNAME. It is just possible
2420 that this could have caused confusion if both these types were looked up
2421 for the same domain, because the text type is used as part of Exim's
2422 per-process caching. But the chance of anyone hitting this buglet seems
2423 very small.
2424
7bb56e1f
PH
242537. The dnsdb lookup has been extended in a number of ways.
2426
2427 (1) There is a new type, "zns", which walks up the domain tree until it
2428 finds some nameserver records. It should be used with care.
2429
ea3bc19b
PH
2430 (2) There is a new type, "mxh", which is like "mx" except that it returns
2431 just the host names, not the priorities.
2432
2433 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2434 looked up. The behaviour when one of the lookups defers can be
2435 controlled by a keyword.
7bb56e1f 2436
ea3bc19b 2437 (4) It is now possible to specify the separator character for use when
7bb56e1f 2438 multiple records are returned.
33397d19 2439
0bcb2a0e
PH
244038. The dnslists ACL condition has been extended: it is now possible to supply
2441 a list of IP addresses and/or domains to be looked up in a particular DNS
2442 domain.
2443
2ac0e484
PH
244439. Added log_selector=+queue_time_overall.
2445
4e1fde53
PH
244640. When running the queue in the test harness, wait just a tad after forking a
2447 delivery process, to get repeatability of debugging output.
2448
de365ded
PH
244941. Include certificate and key file names in error message when GnuTLS fails
2450 to set them up, because the GnuTLS error message doesn't include the name
2451 of the failing file when there is a problem reading it.
2452
f05da2e8
PH
245342. Allow both -bf and -bF in the same test run.
2454
d6453af2
PH
245543. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2456
f7b63901
PH
245744. The "Exiscan patch" is now merged into the mainline Exim source.
2458
245945. Sometimes the final signoff response after QUIT could fail to get
2460 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2461 < 0 before doing a fflush(). This bug looks as though it goes back to the
2462 introduction of TLS in release 3.20, but "sometimes" must have been rare
2463 because the tests only now provoked it.
2464
a444213a
PH
246546. Reset the locale to "C" after calling embedded Perl, in case it was changed
2466 (this can affect the format of dates).
2467
0ec020ea
PH
246847. exim_tidydb, when checking for the continued existence of a message for
2469 which it has found a message-specific retry record, was not finding
2470 messages that were in split spool directories. Consequently, it was
2471 deleting retry records that should have stayed in existence.
2472
b1206957
PH
247348. Steve fixed some bugs in eximstats.
2474
247549. The SPA authentication driver was not abandoning authentication and moving
2476 on to the next authenticator when an expansion was forced to fail,
2477 contradicting the general specification for all authenticators. Instead it
2478 was generating a temporary error. It now behaves as specified.
2479
26dd5a95
PH
248050. The default ordering of permitted cipher suites for GnuTLS was pessimal
2481 (the order specifies the preference for clients). The order is now AES256,
2482 AES128, 3DES, ARCFOUR128.
2483
343b2385
PH
248451. Small patch to Sieve code - explicitly set From: when generating an
2485 autoreply.
2486
1c5466b9
PH
248752. Exim crashed if a remote delivery caused a very long error message to be
2488 recorded - for instance if somebody sent an entire SpamAssassin report back
2489 as a large number of 550 error lines. This bug was coincidentally fixed by
2490 increasing the size of one of Exim's internal buffers (big_buffer) that
2491 happened as part of the Exiscan merge. However, to be on the safe side, I
2492 have made the code more robust (and fixed the comments that describe what
2493 is going on).
2494
55ee9ee3
PH
249553. Now that there can be additional text after "Completed" in log lines (if
2496 the queue_time_overall log selector is set), a one-byte patch to exigrep
2497 was needed to allow it to recognize "Completed" as not the last thing in
2498 the line.
2499
d38f8232
PH
250054. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2501 patch that reportedly fixes this has been added. I am not expert enough to
2502 create a test for it. This is what the patch creator wrote:
2503
2504 "I found a little strange behaviour of ldap code when working with
2505 Windows 2003 AD Domain, where users was placed in more than one
2506 Organization Units. When I tried to give exim partial DN, the exit code
2507 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2508 But simultaneously result of request was absolutely normal ldap result,
2509 so I produce this patch..."
2510
3295e65b
PH
2511 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2512 REFERENCE, so I have modified the code to exclude the patch when that macro
2513 is not defined.
2514
7102e136
PH
251555. Some experimental protocols are using DNS PTR records for new purposes. The
2516 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2517 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2518 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2519 CAN-2005-0021
7102e136 2520
3ca0ba97
PH
252156. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2522
c2bcbe20
PH
252357. Double the size of the debug message buffer (to 2048) so that more of very
2524 long debug lines gets shown.
2525
18ce445d
PH
252658. The exicyclog utility now does better if the number of log files to keep
2527 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2528
1f5b4c3d
PH
252959. Two changes related to the smtp_active_hostname option:
2530
2531 (1) $smtp_active_hostname is now available as a variable.
2532 (2) The default for smtp_banner uses $smtp_active_hostname instead
2533 of $primary_hostname.
2534
b975ba52
PH
253560. The host_aton() function is supposed to be passed a string that is known
2536 to be a valid IP address. However, in the case of IPv6 addresses, it was
2537 not checking this. This is a hostage to fortune. Exim now panics and dies
2538 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2539 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2540 components; fortuitously, this particular loophole had already been fixed
2541 by change 4.50/55 above.
2542
2543 If there are any other similar loopholes, the new check in host_aton()
2544 itself should stop them being exploited. The report I received stated that
2545 data on the command line could provoke the exploit when Exim was running as
2546 exim, but did not say which command line option was involved. All I could
2547 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2548 running as the user.
ea3a6f44 2549 CAN-2005-0021
85b87bc2
PH
2550
255161. There was a buffer overflow vulnerability in the SPA authentication code
2552 (which came originally from the Samba project). I have added a test to the
2553 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2554 CAN-2005-0022
b975ba52 2555
17ffcae7
PH
255662. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2557 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2558
d95f9fdb
PH
255963. The daemon start-up calls getloadavg() while still root for those OS that
2560 need the first call to be done as root, but it missed one case: when
2561 deliver_queue_load_max is set with deliver_drop_privilege. This is
2562 necessary for the benefit of the queue runner, because there is no re-exec
2563 when deliver_drop_privilege is set.
2564
86b8287f
PH
256564. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2566 This has been fixed.
2567
60dc5e56
PH
256865. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2569 was in use, was not putting the data itself into the right store pool;
2570 consequently, it could be overwritten for a subsequent message in the same
2571 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2572 the caching.)
2573
533244af
PH
257466. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2575
a5a28604
PH
257667. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2577 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2578 the function were treating the return as a boolean value, which happened to
2579 work because 0=false and not-0=true, but is not correct code.
2580
7e634d24
PH
258168. The host_aton() function was not handling scoped IPv6 addresses (those
2582 with, for example, "%eth0" on the end) correctly.
2583
3e11c26b
PH
258469. Fixed some compiler warnings in acl.c for the bitmaps specified with
2585 negated items (that is, ~something) in unsigned ints. Some compilers
2586 apparently mutter when there is no cast.
2587
6729cf78
PH
258870. If an address verification called from an ACL failed, and did not produce a
2589 user-specific message (i.e. there was only a "system" message), nothing was
2590 put in $acl_verify_message. In this situation, it now puts the system
2591 message there.
2592
00f00ca5
PH
259371. Change 4.23/11 added synchronization checking at the start of an SMTP
2594 session; change 4.31/43 added the unwanted input to the log line - except
2595 that it did not do this in the start of session case. It now does.
2596
c9bdd01c
PH
259772. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2598 This is wrong and can cause the other end to generate a synchronization
2599 error if it is another Exim or anything else that does the synchronization
2600 check. A QUIT command is no longer sent after a timeout.
2601
d43194df
PH
260273. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2603 during host lookups.
2604
fe5b5d0b
PH
260574. The defer_ok option of callout verification was not working if it was used
2606 when verifying addresses in header lines, that is, for this case:
2607
2608 verify = header_sender/callout=defer_ok
2609
76a2d7ba
PH
261075. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2611 those file descriptors could be used for SMTP connections. If anything
2612 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2613 could be sent to the SMTP client, causing chaos. The daemon now opens
2614 stdin, stdout, and stderr to /dev/null when it puts itself into the
2615 background.
2616
261776. Arrange for output from Perl's "warn" command to be written to Exim's main
2618 log by default. The user can override this with suitable Perl magic.
2619
04f7d5b9
PH
262077. The use of log_message on a "discard" ACL verb, which is supposed to add to
2621 the log message when discard triggers, was not working for the DATA ACL or
2622 for the non-SMTP ACL.
2623
bc60667e
PH
262478. Error message wording change in sieve.c.
2625
bb6e88ff
PH
262679. If smtp_accept_max_per_host was set, the number of connections could be
2627 restricted to fewer than expected, because the daemon was trying to set up
2628 a new connection before checking whether the processes handling previous
2629 connections had finished. The check for completed processes is now done
2630 earlier. On busy systems, this bug wouldn't be noticed because something
2631 else would have woken the daemon, and it would have reaped the completed
2632 process earlier.
2633
1e70f85b
PH
263480. If a message was submitted locally by a user whose login name contained one
2635 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2636 It caused a spool format error. I have fixed the spool reading code. A
2637 related problem was that the "from" clause in the Received: line became
2638 illegal because of the space(s). It is now covered by ${quote_local_part.
2639
264081. Included the latest eximstats from Steve (adds average sizes to HTML Top
2641 tables).
2642
4e01f9d6
PH
264382. Updated OS/Makefile-AIX as per message from Mike Meredith.
2644
1ee1cef2
PH
264583. Patch from Sieve maintainer to fix unterminated string problem in
2646 "vacation" handling.
2647
6e2b4ccc
PH
264884. Some minor changes to the Linux configuration files to help with other
2649 OS variants using glibc.
2650
8e669ac1
PH
265185. One more patch for Sieve to update vacation handling to latest spec.
2652
495ae4b0 2653
bbe902f0
PH
2654----------------------------------------------------
2655See the note above about the 4.44 and 4.50 releases.
2656----------------------------------------------------
2657
2658
2659Exim version 4.44
2660-----------------
2661
2662 1. Change 4.43/35 introduced a bug that caused file counts to be
2663 incorrectly computed when quota_filecount was set in an appendfile
2664 transport
2665
2666 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2667 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2668 place.
2669
2670 3. Give more explanation in the error message when the command for a transport
2671 filter fails to execute.
2672
2673 4. There are several places where Exim runs a non-Exim command in a
2674 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2675 was being done only for the command run by the queryprogram router. It is
2676 now done for all such subprocesses. The other cases are: ${run, transport
2677 filters, and the commands run by the lmtp and pipe transports.
2678
2679 5. Some older OS have a limit of 256 on the maximum number of file
2680 descriptors. Exim was using setrlimit() to set 1000 as a large value
2681 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2682 systems. I've change it so that if it can't get 1000, it tries for 256.
2683
2684 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2685 was an oversight, and furthermore, ever since the addition of extra
2686 controls (e.g. 4.43/32), the checks on when to allow different forms of
2687 "control" were broken. There should now be diagnostics for all cases when a
2688 control that does not make sense is encountered.
2689
2690 7. $recipients is now available in the predata ACL (oversight).
2691
2692 8. Tidy the search cache before the fork to do a delivery from a message
2693 received from the command line. Otherwise the child will trigger a lookup
2694 failure and thereby defer the delivery if it tries to use (for example) a
2695 cached ldap connection that the parent has called unbind on.
2696
2697 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2698 of $address_data from the recipient verification was clobbered by the
2699 sender verification.
2700
270110. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2702 was its contents. (It was OK if the option was not defined at all.)
2703
270411. A "Completed" log line is now written for messages that are removed from
2705 the spool by the -Mrm option.
2706
270712. $host_address is now set to the target address during the checking of
2708 ignore_target_hosts.
2709
271013. When checking ignore_target_hosts for an ipliteral router, no host name was
2711 being passed; this would have caused $sender_host_name to have been used if
2712 matching the list had actually called for a host name (not very likely,
2713 since this list is usually IP addresses). A host name is now passed as
2714 "[x.x.x.x]".
2715
271614. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2717 code that specifies a non-restarting handler (typically sigaction() in
2718 modern systems) in an attempt to fix a rare and obscure crash bug.
2719
272015. Narrowed the window for a race in the daemon that could cause it to ignore
2721 SIGCHLD signals. This is not a major problem, because they are used only to
2722 wake it up if nothing else does.
2723
272416. A malformed maildirsize file could cause Exim to calculate negative values
2725 for the mailbox size or file count. Odd effects could occur as a result.
2726 The maildirsize information is now recalculated if the size or filecount
2727 end up negative.
2728
272917. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2730 support for a long time. Removed HAVE_SYS_VFS_H.
2731
ea3a6f44 273218. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2733
273419. Allow an empty sender to be matched against a lookup in an address list.
2735 Previously the only cases considered were a regular expression, or an
2736 empty pattern.
2737
273820. Exim went into a mad DNS lookup loop when doing a callout where the
2739 host was specified on the transport, if the DNS lookup yielded more than
2740 one IP address.
2741
ea3a6f44
NM
274221. The RFC2047 encoding function was originally intended for short strings
2743 such as real names; it was not keeping to the 75-character limit for
2744 encoded words that the RFC imposes. It now respects the limit, and
2745 generates multiple encoded words if necessary. To be on the safe side, I
2746 have increased the buffer size for the ${rfc2047: expansion operator from
2747 1024 to 2048 bytes.
bbe902f0 2748
ea3a6f44
NM
274922. Failure to deliver a bounce message always caused it to be frozen, even if
2750 there was an errors_to setting on the router. The errors_to setting is now
2751 respected.
bbe902f0
PH
2752
275323. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2754 canonical form (fully expanded) before being placed in
2755 $sender_host_address.
2756
275724. Updated eximstats to version 1.33
2758
ea3a6f44
NM
275925. Include certificate and key file names in error message when GnuTLS fails
2760 to set them up, because the GnuTLS error message doesn't include the name
2761 of the failing file when there is a problem reading it.
bbe902f0
PH
2762
276326. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2764 As per change 25.
bbe902f0 2765
ea3a6f44
NM
276627. Reset the locale to "C" after calling embedded Perl, in case it was changed
2767 (this can affect the format of dates).
bbe902f0 2768
ea3a6f44
NM
276928. exim_tidydb, when checking for the continued existence of a message for
2770 which it has found a message-specific retry record, was not finding
2771 messages that were in split spool directories. Consequently, it was
2772 deleting retry records that should have stayed in existence.
bbe902f0
PH
2773
277429. eximstats updated to version 1.35
2775 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2776 1.35 - bugfix such that pie charts by volume are generated correctly
2777
ea3a6f44
NM
277830. The SPA authentication driver was not abandoning authentication and moving
2779 on to the next authenticator when an expansion was forced to fail,
2780 contradicting the general specification for all authenticators. Instead it
2781 was generating a temporary error. It now behaves as specified.
bbe902f0 2782
ea3a6f44
NM
278331. The default ordering of permitted cipher suites for GnuTLS was pessimal
2784 (the order specifies the preference for clients). The order is now AES256,
2785 AES128, 3DES, ARCFOUR128.
bbe902f0 2786
ea3a6f44
NM
278731. Small patch to Sieve code - explicitly set From: when generating an
2788 autoreply.
bbe902f0 2789
ea3a6f44
NM
279032. Exim crashed if a remote delivery caused a very long error message to be
2791 recorded - for instance if somebody sent an entire SpamAssassin report back
2792 as a large number of 550 error lines. This bug was coincidentally fixed by
2793 increasing the size of one of Exim's internal buffers (big_buffer) that
2794 happened as part of the Exiscan merge. However, to be on the safe side, I
2795 have made the code more robust (and fixed the comments that describe what
2796 is going on).
bbe902f0 2797
ea3a6f44
NM
279833. Some experimental protocols are using DNS PTR records for new purposes. The
2799 keys for these records are domain names, not reversed IP addresses. The
2800 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2801 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2802 CAN-2005-0021
2803
ea3a6f44
NM
280434. The host_aton() function is supposed to be passed a string that is known
2805 to be a valid IP address. However, in the case of IPv6 addresses, it was
2806 not checking this. This is a hostage to fortune. Exim now panics and dies
2807 if the condition is not met. A case was found where this could be provoked
2808 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2809 components; fortuitously, this particular loophole had already been fixed
2810 by change 4.50/55 or 4.44/33 above.
2811
2812 If there are any other similar loopholes, the new check in host_aton()
2813 itself should stop them being exploited. The report I received stated that
2814 data on the command line could provoke the exploit when Exim was running as
2815 exim, but did not say which command line option was involved. All I could
2816 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2817 running as the user.
bbe902f0
PH
2818 CAN-2005-0021
2819
ea3a6f44
NM
282035. There was a buffer overflow vulnerability in the SPA authentication code
2821 (which came originally from the Samba project). I have added a test to the
2822 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2823 CAN-2005-0022
2824
ea3a6f44
NM
282536. The daemon start-up calls getloadavg() while still root for those OS that
2826 need the first call to be done as root, but it missed one case: when
2827 deliver_queue_load_max is set with deliver_drop_privilege. This is
2828 necessary for the benefit of the queue runner, because there is no re-exec
2829 when deliver_drop_privilege is set.
bbe902f0 2830
ea3a6f44
NM
283137. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2832 was in use, was not putting the data itself into the right store pool;
2833 consequently, it could be overwritten for a subsequent message in the same
2834 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2835 the caching.)
bbe902f0 2836
ea3a6f44
NM
283738. Sometimes the final signoff response after QUIT could fail to get
2838 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2839 < 0 before doing a fflush(). This bug looks as though it goes back to the
2840 introduction of TLS in release 3.20, but "sometimes" must have been rare
2841 because the tests only now provoked it.
bbe902f0
PH
2842
2843
495ae4b0
PH
2844Exim version 4.43
2845-----------------
2846
2847 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2848 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2849 Now it returns an integer. A number of calls were still expecting a T/F
2850 return. Fortuitously, in all cases, the tests worked in OK situations,
2851 which is the norm. However, things would have gone wrong on any write
2852 failures on the smtp file descriptor. This function is used when sending
2853 messages over SMTP and also when doing verify callouts.
2854
2855 2. When Exim is called to do synchronous delivery of a locally submitted
2856 message (the -odf or -odi options), it no longer closes stderr before doing
2857 the delivery.
2858
2859 3. Implemented the mua_wrapper option.
2860
2861 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2862
2863 5. Implemented the functions header_remove(), header_testname(),
2864 header_add_at_position(), and receive_remove_recipient(), and exported them
2865 to local_scan().
2866
2867 6. If an ACL "warn" statement specified the addition of headers, Exim already
2868 inserted X-ACL-Warn: at the start if there was no header name. However, it
2869 was not making this test for the second and subsequent header lines if
2870 there were newlines in the string. This meant that an invalid header could
2871 be inserted if Exim was badly configured.
2872
2873 7. Allow an ACL "warn" statement to add header lines at the start or after all
2874 the Received: headers, as well as at the end.
2875
2876 8. Added the rcpt_4xx retry error code.
2877
2878 9. Added postmaster_mailfrom=xxx to callout verification option.
2879
288010. Added mailfrom=xxxx to the callout verification option, for verify=
2881 header_sender only.
2882
288311. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2884 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2885
288612. Inserted some casts to stop certain compilers warning when using pointer
2887 differences as field lengths or precisions in printf-type calls (mostly
2888 affecting debugging statements).
2889
289013. Added optional readline() support for -be (dynamically loaded).
2891
289214. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2893 same clock tick as a message's arrival, so that its received time was the
2894 same as the "first fail" time on the retry record, and that message
2895 remained on the queue past the ultimate address timeout, every queue runner
2896 would try a delivery (because it was past the ultimate address timeout) but
2897 after another failure, the ultimate address timeout, which should have then
2898 bounced the address, did not kick in. This was a "< instead of <=" error;
2899 in most cases the first failure would have been in the next clock tick
2900 after the received time, and all would be well.
2901
290215. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2903 being recognized when the domain list was tested by the match_domain
2904 condition in an expansion string.
2905
290616. Added the ${str2b64: operator.
2907
290817. Exim was always calling setrlimit() to set a large limit for the number of
2909 processes, without checking whether the existing limit was already
2910 adequate. (It did check for the limit on file descriptors.) Furthermore,
2911 errors from getrlimit() and setrlimit() were being ignored. Now they are
2912 logged to the main and panic logs, but Exim does carry on, to try to do its
2913 job under whatever limits there are.
2914
291518. Imported PCRE 5.0.
2916
291719. Trivial typo in log message " temporarily refused connection" (the leading
2918 space).
2919
292020. If the log selector return_path_on_delivery was set and an address was
2921 redirected to /dev/null, the delivery process crashed because it assumed
2922 that a return path would always be set for a "successful" delivery. In this
2923 case, the whole delivery is bypassed as an optimization, and therefore no
2924 return path is set.
2925
292621. Internal re-arrangement: the function for sending a challenge and reading
2927 a response while authentication was assuming a zero-terminated challenge
2928 string. It's now changed to take a pointer and a length, to allow for
2929 binary data in such strings.
2930
293122. Added the cyrus_sasl authenticator (code supplied by MBM).
2932
293323. Exim was not respecting finduser_retries when seeking the login of the
2934 uid under which it was called; it was always trying 10 times. (The default
2935 setting of finduser_retries is zero.) Also, it was sleeping after the final
2936 failure, which is pointless.
2937
293824. Implemented tls_on_connect_ports.
2939
294025. Implemented acl_smtp_predata.
2941
294226. If the domain in control=submission is set empty, Exim assumes that the
2943 authenticated id is a complete email address when it generates From: or
2944 Sender: header lines.
2945
294627. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2947 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2948 chown and chgrp in /bin and hostname in /usr/bin.
2949
295028. Exim was keeping the "process log" file open after each use, just as it
2951 does for the main log. This opens the possibility of it remaining open for
2952 long periods when the USR1 signal hits a daemon. Occasional processlog
2953 errors were reported, that could have been caused by this. Anyway, it seems
2954 much more sensible not to leave this file open at all, so that is what now
2955 happens.
2956
295729. The long-running daemon process does not normally write to the log once it
2958 has entered its main loop, and it closes the log before doing so. This is
2959 so that log files can straightforwardly be renamed and moved. However,
2960 there are a couple of unusual error situations where the daemon does write
2961 log entries, and I had neglected to close the log afterwards.
2962
296330. The text of an SMTP error response that was received during a remote
2964 delivery was being truncated at 512 bytes. This is too short for some of
2965 the long messages that one sometimes sees. I've increased the limit to
2966 1024.
2967
296831. It is now possible to make retry rules that apply only when a message has a
2969 specific sender, in particular, an empty sender.
2970
297132. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2972 it possible to be selective about when SMTP synchronization is enforced.
2973
297433. Added "control = caseful_local_part" and "control = "caselower_local_part".
2975
297632. Implemented hosts_connection_nolog.
2977
297833. Added an ACL for QUIT.
2979
298034. Setting "delay_warning=" to disable warnings was not working; it gave a
2981 syntax error.
2982
298335. Added mailbox_size and mailbox_filecount to appendfile.
2984
298536. Added control = no_multiline_responses to ACLs.
2986
298737. There was a bug in the logic of the code that waits for the clock to tick
2988 in the case where the clock went backwards by a substantial amount such
2989 that the microsecond fraction of "now" was more than the microsecond
2990 fraction of "then" (but the whole seconds number was less).
2991
299238. Added support for the libradius Radius client library this is found on
2993 FreeBSD (previously only the radiusclient library was supported).
2994
2995
2996Exim version 4.42
2997-----------------
2998
2999 1. When certain lookups returned multiple values in the form name=value, the
3000 quoting of the values was not always being done properly. Specifically:
3001 (a) If the value started with a double quote, but contained no whitespace,
3002 it was not quoted.
3003 (b) If the value contained whitespace other than a space character (i.e.
3004 tabs or newlines or carriage returns) it was not quoted.
3005 This fix has been applied to the mysql and pgsql lookups by writing a
3006 separate quoting function and calling it from the lookup code. The fix
3007 should probably also be applied to nisplus, ibase and oracle lookups, but
3008 since I cannot test any of those, I have not disturbed their existing code.
3009
3010 2. A hit in the callout cache for a specific address caused a log line with no
3011 reason for rejecting RCPT. Now it says "Previous (cached) callout
3012 verification failure".
3013
3014 3. There was an off-by-one bug in the queryprogram router. An over-long
3015 return line was truncated at 256 instead of 255 characters, thereby
3016 overflowing its buffer with the terminating zero. As well as fixing this, I
3017 have increased the buffer size to 1024 (and made a note to document this).
3018
3019 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
3020 when Exim is waiting for an SMTP response from a remote server, Exim
3021 restarts its select() call on the socket, thereby resetting its timeout.
3022 This is not a problem when such interrupts are rare. Somebody set up a cron
3023 job to run exiwhat every 2 minutes, which is less than the normal select()
3024 timeout (5 or 10 minutes). This meant that the select() timeout never
3025 kicked in because it was always reset. I have fixed this by comparing the
3026 time when an interrupt arrives with the time at the start of the first call
3027 to select(). If more time than the timeout has elapsed, the interrupt is
3028 treated as a timeout.
3029
3030 5. Some internal re-factoring in preparation for the addition of Sieve
3031 extensions (by MH). In particular, the "personal" test is moved to a
3032 separate function, and given an option for scanning Cc: and Bcc: (which is
3033 not set for Exim filters).
3034
3035 6. When Exim created an email address using the login of the caller as the
3036 local part (e.g. when creating a From: or Sender: header line), it was not
3037 quoting the local part when it contained special characters such as @.
3038
3039 7. Installed new OpenBSD configuration files.
3040
3041 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3042 try to make them clearer.
3043
3044 9. Callout options, other than the timeout value, were being ignored when
3045 verifying sender addresses in header lines. For example, when using
3046
3047 verify = header_sender/callout=no_cache
3048
3049 the cache was (incorrectly) being used.
3050
305110. Added a missing instance of ${EXE} to the exim_install script; this affects
3052 only the Cygwin environment.
3053
305411. When return_path_on_delivery was set as a log selector, if different remote
3055 addresses in the same message used different return paths and parallel
3056 remote delivery occurred, the wrong values would sometimes be logged.
3057 (Whenever a remote delivery process finished, the return path value from
3058 the most recently started remote delivery process was logged.)
3059
306012. RFC 3848 specifies standard names for the "with" phrase in Received: header
3061 lines when AUTH and/or TLS are in use. This is the "received protocol"
3062 field. Exim used to use "asmtp" for authenticated SMTP, without any
3063 indication (in the protocol name) for TLS use. Now it follows the RFC and
3064 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3065 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3066 names appear in log lines as well as in Received: header lines.
3067
306813. Installed MH's patches for Sieve to add the "copy" and "vacation"
3069 extensions, and comparison tests, and to fix some bugs.
3070
307114. Changes to the "personal" filter test:
3072
3073 (1) The test was buggy in that it was just doing the equivalent of
3074 "contains" tests on header lines. For example, if a user's address was
3075 anne@some.where, the "personal" test would incorrectly be true for
3076
3077 To: susanne@some.where
3078
3079 This test is now done by extracting each address from the header in turn,
3080 and checking the entire address. Other tests that are part of "personal"
3081 are now done using regular expressions (for example, to check local parts
3082 of addresses in From: header lines).
3083
3084 (2) The list of non-personal local parts in From: addresses has been
3085 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3086 taken from the Sieve specification recommendations.
3087
3088 (3) If the message contains any header line starting with "List-" it is
3089 treated as non-personal.
3090
3091 (4) The test for "circular" in the Subject: header line has been removed
3092 because it now seems ill-conceived.
3093
309415. Minor typos in src/EDITME comments corrected.
3095
309616. Installed latest exipick from John Jetmore.
3097
309817. If headers_add on a router specified a text string that was too long for
3099 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3100 of string_sprintf() is now avoided.
3101
310218. $message_body_size was not set (it was always zero) when running the DATA
3103 ACL and the local_scan() function.
3104
310519. For the "mail" command in an Exim filter, no default was being set for
3106 the once_repeat time, causing a random time value to be used if "once" was
3107 specified. (If the value happened to be <= 0, no repeat happened.) The
3108 default is now 0s, meaning "never repeat". The "vacation" command was OK
3109 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3110 (I found it when inspecting the code).
3111
311220. There is now an overall timeout for performing a callout verification. It
3113 defaults to 4 times the callout timeout, which applies to individual SMTP
3114 commands during the callout. The overall timeout applies when there is more
3115 than one host that can be tried. The timeout is checked before trying the
3116 next host. This prevents very long delays if there are a large number of
3117 hosts and all are timing out (e.g. when the network connections are timing
3118 out). The value of the overall timeout can be changed by specifying an
3119 additional sub-option for "callout", called "maxwait". For example:
3120
3121 verify = sender/callout=5s,maxwait=20s
3122
312321. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3124 to the end before writing, but this should make it even safer).
3125
312622. Exim was forgetting that it had advertised PIPELINING for the second and
3127 subsequent messages on an SMTP connection. It was also not resetting its
3128 memory on STARTTLS and an internal HELO.
3129
313023. When Exim logs an SMTP synchronization error within a session, it now
3131 records whether PIPELINING has been advertised or not.
3132
313324. Added 3 instances of "(long int)" casts to time_t variables that were being
3134 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3135 rather than long int.
3136
313725. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3138
313926. Added the never_mail option to autoreply.
3140
3141
3142Exim version 4.41
3143-----------------
3144
3145 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3146 crash if the getsockname() call failed; this can happen if a connection is
3147 closed very soon after it is established. The problem was simply in the
3148 order in which certain operations were done, causing Exim to try to write
3149 to the SMTP stream before it had set up the file descriptor. The bug has
3150 been fixed by making things happen in the correct order.
3151
3152
3153Exim version 4.40
3154-----------------
3155
3156 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3157 before the connection was closed, thus losing the rejection response.
3158
3159 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3160 some early Solaris releases, but causes trouble in current releases where
3161 socklen_t is defined.
3162
3163 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3164 always exist.
3165
3166 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3167 configured.
3168
3169 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3170 that releasing the top of it at the end releases what was used for sub-
3171 expansions (unless the block got too big). However, discard this block if
3172 the first thing is a variable or header, so that we can use its block when
3173 it is dynamic (useful for very large $message_headers, for example).
3174
3175 6. Lookups now cache *every* query, not just the most recent. A new, separate
3176 store pool is used for this. It can be recovered when all lookup caches are
3177 flushed. Lookups now release memory at the end of their result strings.
3178 This has involved some general refactoring of the lookup sources.
3179
3180 7. Some code has been added to the store_xxx() functions to reduce the amount
3181 of flapping under certain conditions.
3182
3183 8. log_incoming_interface used to affect only the <= reception log lines. Now
3184 it causes the local interface and port to be added to several more SMTP log
3185 lines, for example "SMTP connection from", and rejection lines.
3186
3187 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3188
318910. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3190
319111. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3192 could be overwritten at the end of the current message (or the start of a
3193 new message if it was set in a HELO ACL). The value is now preserved for
3194 the duration of the SMTP connection.
3195
319612. If a transport had a headers_rewrite setting, and a matching header line
3197 contained an unqualified address, that address was qualified, even if it
3198 did not match any rewriting rules. The underlying bug was that the values
3199 of the flags that permit the existence of unqualified sender and recipient
3200 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3201 non-local messages, and by -bnq for local messages) were not being
3202 preserved with the message after it was received.
3203
320413. When Exim was logging an SMTP synchronization error, it could sometimes log
3205 "next input=" as part of the text comprising the host identity instead of
3206 the correct text. The code was using the same buffer for two different
3207 strings. However, depending on which order the printing function evaluated
3208 its arguments, the bug did not always show up. Under Linux, for example, my
3209 test suite worked just fine.
3210
321114. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3212 doesn't work with some older versions of Perl. It has been changed to "my",
3213 which in any case is probably the better facility to use.
3214
321515. A really picky compiler found some instances of statements for creating
3216 error messages that either had too many or two few arguments for the format
3217 string.
3218
321916. The size of the buffer for calls to the DNS resolver has been increased
3220 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3221 for addresses that have a lot of PTR records. This alleviates a problem; it
3222 does not fully solve it.
3223
322417. A dnsdb lookup for PTR records that receives more data than will fit in the
3225 buffer now truncates the list and logs the incident, which is the same
3226 action as happens when Exim is looking up a host name and its aliases.
3227 Previously in this situation something unpredictable would happen;
3228 sometimes it was "internal error: store_reset failed".
3229
323018. If a server dropped the connection unexpectedly when an Exim client was
3231 using GnuTLS and trying to read a response, the client delivery process
3232 crashed while trying to generate an error log message.
3233
323419. If a "warn" verb in an ACL added multiple headers to a message in a single
3235 string, for example:
3236
3237 warn message = H1: something\nH2: something
3238
3239 the text was added as a single header line from Exim's point of view
3240 though it ended up OK in the delivered message. However, searching for the
3241 second and subsequent header lines using $h_h2: did not work. This has been
3242 fixed. Similarly, if a system filter added multiple headers in this way,
3243 the routers could not see them.
3244
324520. Expanded the error message when iplsearch is called with an invalid key to
3246 suggest using net-iplsearch in a host list.
3247
324821. When running tests using -bh, any delays imposed by "delay" modifiers in
3249 ACLs are no longer actually imposed (and a message to that effect is
3250 output).
3251
325222. If a "gecos" field in a passwd entry contained escaped characters, in
3253 particular, if it contained a \" sequence, Exim got it wrong when building
3254 a From: or a Sender: header from that name. A second bug also caused
3255 incorrect handling when an unquoted " was present following a character
3256 that needed quoting.
3257
325823. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3259 was not being matched caselessly.
3260
326124. Arranged for all hyphens in the exim.8 source to be escaped with
3262 backslashes.
3263
326425. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3265 properly. Recipient callout cache records were still being keyed to include
3266 the sender, even when use_sender was set false. This led to far more
3267 callouts that were necessary. The sender is no longer included in the key
3268 when use_sender is false.
3269
327026. Added "control = submission" modifier to ACLs.
3271
327227. Added the ${base62d: operator to decode base 62 numbers.
3273
327428. dnsdb lookups can now access SRV records.
3275
327629. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3277 the configuration file.
3278
327930. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3280 (-v) mode. This makes the output for a verbose queue run more intelligible.
3281
328231. Added a use_postmaster feature to recipient callouts.
3283
328432. Added the $body_zerocount variable, containing the number of binary zero
3285 bytes in the message body.
3286
328733. The time of last modification of the "new" subdirectory is now used as the
3288 "mailbox time last read" when there is a quota error for a maildir
3289 delivery.
3290
329134. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3292
329335. Added +ignore_unknown as a special item in host lists.
3294
329536. Code for decoding IPv6 addresses in host lists is now included, even if
3296 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3297 address was recognized as an IP address, but was then not correctly decoded
3298 into binary, causing unexpected and incorrect effects when compared with
3299 another IP address.
3300
3301
3302Exim version 4.34
3303-----------------
3304
3305 1. Very minor rewording of debugging text in manualroute to say "list of
3306 hosts" instead of "hostlist".
3307
3308 2. If verify=header_syntax was set, and a header line with an unqualified
3309 address (no domain) and a large number of spaces between the end of the
3310 name and the colon was received, the reception process suffered a buffer
3311 overflow, and (when I tested it) crashed. This was caused by some obsolete
3312 code that should have been removed. The fix is to remove it!
3313
3314 3. When running in the test harness, delay a bit after writing a bounce
3315 message to get a bit more predictability in the log output.
3316
3317 4. Added a call to search_tidyup() just before forking a reception process. In
3318 theory, someone could use a lookup in the expansion of smtp_accept_max_
3319 per_host which, without the tidyup, could leave open a database connection.
3320
3321 5. Added the variables $recipient_data and $sender_data which get set from a
3322 lookup success in an ACL "recipients" or "senders" condition, or a router
3323 "senders" option, similar to $domain_data and $local_part_data.
3324
3325 6. Moved the writing of debug_print from before to after the "senders" test
3326 for routers.
3327
3328 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3329 problems for message scanning, either using a data ACL, or using
3330 local_scan() because the Received: header was not generated till after they
3331 were called (in order to set the time as the time of reception completion).
3332 I have revised the way this works. The header is now generated after the
3333 body is received, but before the ACL or local_scan() are called. After they
3334 are run, the timestamp in the header is updated.
3335
3336
3337Exim version 4.33
3338-----------------
3339
3340 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3341 before starting a queue runner without re-exec. This happened only when
3342 deliver_drop_privilege was set or when the Exim user was set to root. The
3343 effect of the bug was that timeouts during subsequent deliveries caused
3344 crashes instead of being properly handled. The handler is now left at its
3345 default (and expected) setting.
3346
3347 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3348 message, again when deliver_drop_privilege is set or Exim is run as root.
3349 The bug described in (1) was not present in this case, but the tidying up
3350 of the other signals was missing. I have made the two cases consistent.
3351
3352 3. The ignore_target_hosts setting on a manualroute router was being ignored
3353 for hosts that were looked up using the /MX notation.
3354
3355 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3356 in domain lists.
3357
3358 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3359 operated on the sender address. After changing the $sender_address to <>
3360 for the sender address verify, Exim was re-instated it as the original
3361 (before rewriting) address, but remembering that it had rewritten it, so it
3362 wasn't rewriting it again. This bug also had the effect of breaking the
3363 sender address verification caching when the sender address was rewritten.
3364
3365 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3366 This has been changed so that if the ip literal address matches
3367 ignore_target_hosts, the router declines.
3368
3369 7. Added expansion conditions match_domain, match_address, and match_local_
3370 part (NOT match_host).
3371
3372 8. The placeholder for the Received: header didn't have a length field set.
3373
3374 9. Added code to Exim itself and to exim_lock to test for a specific race
3375 condition that could lead to file corruption when using MBX delivery. The
3376 issue is with the lockfile that is created in /tmp. If this file is removed
3377 after a process has opened it but before that process has acquired a lock,
3378 there is the potential for a second process to recreate the file and also
3379 acquire a lock. This could lead to two Exim processes writing to the file
3380 at the same time. The added code performs the same test as UW imapd; it
3381 checks after acquiring the lock that its file descriptor still refers to
3382 the same named file.
3383
338410. The buffer for building added header lines was of fixed size, 8192 bytes.
3385 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3386 when Exim is built.
3387
338811. Added the smtp_active_hostname option. If used, this will typically be made
3389 to depend on the incoming interface address. Because $interface_address is
3390 not set up until the daemon has forked a reception process, error responses
3391 that can happen earlier (such as "too many connections") no longer contain
3392 a host name.
3393
339412. If an expansion in a condition on a "warn" statement fails because a lookup
3395 defers, the "warn" statement is abandoned, and the next ACL statement is
3396 processed. Previously this caused the whole ACL to be aborted.
3397
339813. Added the iplsearch lookup type.
3399
340014. Added ident_timeout as a log selector.
3401
340215. Added tls_certificate_verified as a log selector.
3403
340416. Added a global option tls_require_ciphers (compare the smtp transport
3405 option of the same name). This controls incoming TLS connections.
3406
340717. I finally figured out how to make tls_require_ciphers do a similar thing
3408 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3409 before starting the TLS session.
3410
341118. Tabs are now shown as \t in -bP output.
3412
341319. If the log selector return_path_on_delivery was set, Exim crashed when
3414 bouncing a message because it had too many Received: header lines.
3415
341620. If two routers both had headers_remove settings, and the first one included
3417 a superfluous trailing colon, the final name in the first list and the
3418 first name in the second list were incorrectly joined into one item (with a
3419 colon in the middle).
3420
3421
3422Exim version 4.32
3423-----------------
3424
3425 1. Added -C and -D options to the exinext utility, mainly to make it easier
3426 to include in the automated testing, but these could be helpful when
3427 multiple configurations are in use.
3428
3429 2. The exinext utility was not formatting the output nicely when there was
3430 an alternate port involved in the retry record key, nor when there was a
3431 message id as well (for retries that were specific to a specific message
3432 and a specific host). It was also confused by IPv6 addresses, because of
3433 the additional colons they contain. I have fixed the IPv4 problem, and
3434 patched it up to do a reasonable job for IPv6.
3435
3436 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3437 delivery, the log line now contains "pipelined" if PIPELINING was used.
3438
3439 4. An SMTP transport process used to panic and die if the bind() call to set
3440 an explicit outgoing interface failed. This has been changed; it is now
3441 treated in the same way as a connect() failure.
3442
3443 5. A reference to $sender_host_name in the part of a conditional expansion
3444 that was being skipped was still causing a DNS lookup. This no longer
3445 occurs.
3446
3447 6. The def: expansion condition was not recognizing references to header lines
3448 that used bh_ and bheader_.
3449
3450 7. Added the _cache feature to named lists.
3451
3452 8. The code for checking quota_filecount in the appendfile transport was
3453 allowing one more file than it should have been.
3454
3455 9. For compatibility with Sendmail, the command line option
3456
3457 -prval:sval
3458
3459 is equivalent to
3460
3461 -oMr rval -oMs sval
3462
3463 and sets the incoming protocol and host name (for trusted callers). The
3464 host name and its colon can be omitted when only the protocol is to be set.
3465 Note the Exim already has two private options, -pd and -ps, that refer to
3466 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3467 "s", but I don't think that's a major issue.
3468
346910. A number of refactoring changes to the code, none of which should affect
3470 Exim's behaviour:
3471
3472 (a) The number of logging options was getting close to filling up the
3473 32-bit word that was used as a bit map. I have split them into two classes:
3474 those that are passed in the argument to log_write(), and those that are
3475 only ever tested independently outside of that function. These are now in
3476 separate 32-bit words, so there is plenty of room for expansion again.
3477 There is no change in the user interface or the logging behaviour.
3478
3479 (b) When building, for example, log lines, the code previously used a
3480 macro that called string_cat() twice, in order to add two strings. This is
3481 not really sufficiently general. Furthermore, there was one instance where
3482 it was actually wrong because one of the argument was used twice, and in
3483 one call a function was used. (As it happened, calling the function twice
3484 did not affect the overall behaviour.) The macro has been replaced by a
3485 function that can join an arbitrary number of extra strings onto a growing
3486 string.
3487
3488 (c) The code for expansion conditions now uses a table and a binary chop
3489 instead of a serial search (which was left over from when there were very
3490 few conditions). Also, it now recognizes conditions like "pam" even when
3491 the relevant support is not compiled in: a suitably worded error message is
3492 given if an attempt is made to use such a condition.
3493
349411. Added ${time_interval:xxxxx}.
3495
349612. A bug was causing one of the ddress fields not to be passed back correctly
3497 from remote delivery subprocesses. The field in question was not being
3498 subsequently used, so this caused to problems in practice.
3499
350013. Added new log selectors queue_time and deliver_time.
3501
350214. Might have fixed a bug in maildirsizefile handling that threw up
3503 "unexpected character" debug warnings, and recalculated the data
3504 unnecessarily. In any case, I expanded the warning message to give more
3505 information.
3506
350715. Added the message "Restricted characters in address" to the statements in
3508 the default ACL that block characters like @ and % in local parts.
3509
351016. Change 71 for release 4.31 proved to be much less benign that I imagined.
3511 Three changes have been made:
3512
3513 (a) There was a serious bug; a negative response to MAIL caused the whole
3514 recipient domain to be cached as invalid, thereby blocking all messages
3515 to all local parts at the same domain, from all senders. This bug has
3516 been fixed. The domain is no longer cached after a negative response to
3517 MAIL if the sender used is not empty.
3518
3519 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3520 been restored.
3521
3522 (c) A new callout option, "use_sender" has been added for people who want
3523 the modified behaviour.
3524
3525
3526Exim version 4.31
3527-----------------
3528
3529 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3530 Larry Rosenman.
3531
3532 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3533 indeed breaks things for older releases.
3534
3535 3. Added additional logging to the case where there is a problem reading data
3536 from a filter that is running in a subprocess using a pipe, in order to
3537 try to track down a specific problem.
3538
3539 4. Testing facility fudge: when running in the test harness and attempting
3540 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3541 getting "No route to host". Convert this to a timeout.
3542
3543 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3544 warning.
3545
3546 6. Some OS don't have socklen_t but use size_t instead. This affects the
3547 fifth argument of getsockopt() amongst other things. This is now
3548 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3549 can be set for individual OS. I have set it for SunOS5, OSF1, and