small fix for spamd_address expansion - thanks to Warren Baker
[exim.git] / doc / doc-txt / ChangeLog
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089793a4 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.539 2008/01/22 19:23:47 fanf2 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
deafd5b3 20
47db1125
NM
21Exim version 4.69
22-----------------
23
4b3504d0
TK
24TK/01 Add preliminary DKIM support. Currently requires a forked version of
25 ALT-N's libdkim that I have put here:
26 http://duncanthrax.net/exim-experimental/
27
28 Note to Michael Haardt: I had to rename some vars in sieve.c. They
29 were called 'true' and it seems that C99 defines that as a reserved
30 keyword to be used with 'bool' variable types. That means you could
31 not include C99-style headers which use bools without triggering
32 build errors in sieve.c.
33
81ea09ca
NM
34NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
35 as mailq or other aliases. Changed the --help handling significantly
36 to do whats expected. exim_usage() emits usage/help information.
37
f13cddcb
SC
38SC/01 Added the -bylocaldomain option to eximstats.
39
8ad076b2
NM
40NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr
41
a843aaa6
NM
42NM/03 Bugzilla 613: Documentation fix for acl_not_smtp
43
47db1125
NM
44NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall)
45
46
eb4c0de6
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47Exim version 4.68
48-----------------
49
50PH/01 Another patch from the Sieve maintainer.
51
6a3bceb1
PH
52PH/02 When an IPv6 address is converted to a string for single-key lookup
53 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
54 dots are used instead of colons so that keys in lsearch files need not
55 contain colons. This was done some time before quoting was made available
56 in lsearch files. However, iplsearch files do require colons in IPv6 keys
57 (notated using the quote facility) so as to distinguish them from IPv4
58 keys. This meant that lookups for IP addresses in host lists did not work
59 for iplsearch lookups.
60
61 This has been fixed by arranging for IPv6 addresses to be expressed with
62 colons if the lookup type is iplsearch. This is not incompatible, because
63 previously such lookups could never work.
64
65 The situation is now rather anomolous, since one *can* have colons in
66 ordinary lsearch keys. However, making the change in all cases is
67 incompatible and would probably break a number of configurations.
68
2e30fa9d
TK
69TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
70 version.
71
0806a9c5
MH
72MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
73 conversion specification without a maximum field width, thereby enabling
74 a rogue spamd server to cause a buffer overflow. While nobody in their
75 right mind would setup Exim to query an untrusted spamd server, an
76 attacker that gains access to a server running spamd could potentially
77 exploit this vulnerability to run arbitrary code as the Exim user.
78
ae276964
TK
79TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
80 $primary_hostname instead of what libspf2 thinks the hosts name is.
81
0f2cbd1b
MH
82MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
83 a directory entry by the name of the lookup key. Previously, if a
84 symlink pointed to a non-existing file or a file in a directory that
85 Exim lacked permissions to read, a lookup for a key matching that
86 symlink would fail. Now it is enough that a matching directory entry
87 exists, symlink or not. (Bugzilla 503.)
88
2b85bce7
PH
89PH/03 The body_linecount and body_zerocount variables are now exported in the
90 local_scan API.
91
93655c46
PH
92PH/04 Added the $dnslist_matched variable.
93
6c512171
PH
94PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
95 This means they are set thereafter only if the connection becomes
96 encrypted.
97
98PH/06 Added the client_condition to authenticators so that some can be skipped
99 by clients under certain conditions.
100
aa6dc513
PH
101PH/07 The error message for a badly-placed control=no_multiline_responses left
102 "_responses" off the end of the name.
103
a96603a0
PH
104PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
105
8f240103
PH
106PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
107 (without spaces) instead of just copying the configuration text.
108
109PH/10 Added the /noupdate option to the ratelimit ACL condition.
110
d677b2f2
PH
111PH/11 Added $max_received_linelength.
112
d52120f2
PH
113PH/12 Added +ignore_defer and +include_defer to host lists.
114
64f2600a
PH
115PH/13 Installed PCRE version 7.2. This needed some changes because of the new
116 way in which PCRE > 7.0 is built.
117
8669f003
PH
118PH/14 Implemented queue_only_load_latch.
119
a4dc33a8
PH
120PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
121 MAIL command. The effect was to mangle the value on 64-bit systems.
122
d6a60c0f
PH
123PH/16 Another patch from the Sieve maintainer.
124
8f128379
PH
125PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
126
8932dffe
PH
127PH/18 If a system quota error occurred while trying to create the file for
128 a maildir delivery, the message "Mailbox is full" was not appended to the
129 bounce if the delivery eventually timed out. Change 4.67/27 below applied
130 only to a quota excession during the actual writing of the file.
d6a60c0f 131
ddea74fa 132PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
133 characters?) which causes problems in log lines. The DN values are now
134 passed through string_printing() before being added to log lines.
135
ddea74fa 136PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
137 and InterBase are left for another time.)
138
ddea74fa
PH
139PH/21 Added message_body_newlines option.
140
ce9f225c
PH
141PH/22 Guard against possible overflow in moan_check_errorcopy().
142
19897d52
PH
143PH/23 POSIX allows open() to be a macro; guard against that.
144
bc64a74d
PH
145PH/24 If the recipient of an error message contained an @ in the local part
146 (suitably quoted, of course), incorrect values were put in $domain and
147 $local_part during the evaluation of errors_copy.
148
eb4c0de6 149
b4ed4da0
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150Exim version 4.67
151-----------------
152
22ad45c9
MH
153MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
154 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
155 Jan Srzednicki.
156
b4ed4da0
PH
157PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
158 issue a MAIL command.
159
431b7361
PH
160PH/02 In an ACL statement such as
161
162 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
163
164 if a client was not listed at all, or was listed with a value other than
165 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
166 the condition was not true (as it should be), so access was not denied.
167 The bug was that the ! inversion was incorrectly passed on to the second
168 item. This has been fixed.
169
170PH/03 Added additional dnslists conditions == and =& which are different from
171 = and & when the dns lookup returns more than one IP address.
172
83da1223
PH
173PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
174 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
175
54fc8428
PH
176PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
177 FSYNC, which compiles an option called disable_fsync that allows for
178 bypassing fsync(). The documentation is heavily laced with warnings.
179
34c5e8dd
SC
180SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
181
bbe15da8
PH
182PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
183 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
184 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
185 including adding "make clean"; (3) Added -fPIC when compiling the test
186 dynamically loaded module, to get rid of a warning.
187
0e8a9471
MH
188MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
189 message fails, move_frozen_messages = true and ignore_bounce_errors_after
190 = 0s. The bug is otherwise harmless.
191
f0872424
PH
192PH/07 There was a bug in the dovecot authenticator such that the value of
193 $auth1 could be overwritten, and so not correctly preserved, after a
194 successful authentication. This usually meant that the value preserved by
195 the server_setid option was incorrect.
196
b01dd148
PH
197PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
198
6bf342e1
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199PH/09 Installed PCRE release 7.0.
200
273f34d0
PH
201PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
202 run for batched SMTP input. It is now run at the start of every message
203 in the batch. While fixing this I discovered that the process information
204 (output by running exiwhat) was not always getting set for -bs and -bS
205 input. This is fixed, and it now also says "batched" for BSMTP.
206
cf8b11a5
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207PH/11 Added control=no_pipelining.
208
41c7c167
PH
209PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
210 patch, slightly modified), and move the expansion of helo_data till after
211 the connection is made in the smtp transport (so it can use these
212 values).
213
9c57cbc0
PH
214PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
215
f3f065bb
PH
216PH/14 Added log_selector = +pid.
217
047bdd8c
PH
218PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
219
0ce9abe6
PH
220PH/16 Add ${if forany and ${if forall.
221
0e22dfd1
PH
222PH/17 Added dsn_from option to vary the From: line in DSNs.
223
4c590bd1
PH
224PH/18 Flush SMTP output before performing a callout, unless control =
225 no_callout_flush is set.
226
09945f1e
PH
227PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
228 was true (the default) a successful delivery failed to delete the retry
229 item, thus causing premature timeout of the address. The bug is now
230 fixed.
231
c51b8e75
PH
232PH/20 Added hosts_avoid_pipelining to the smtp transport.
233
e28326d8
PH
234PH/21 Long custom messages for fakedefer and fakereject are now split up
235 into multiline reponses in the same way that messages for "deny" and
236 other ACL rejections are.
237
75b1493f
PH
238PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
239 with slight modification.
240
7c5214ec
PH
241PH/23 Applied sieve patches from the maintainer "tracking the latest notify
242 draft, changing the syntax and factoring some duplicate code".
243
4311097e
PH
244PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
245 for deliveries of the second and subsequent messages over the same SMTP
246 connection.
247
29f89cad
PH
248PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
249 ${reduce, with only minor "tidies".
250
5e687460
SC
251SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
252
c3611384
PH
253PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
254 expansion side effects.
255
5a11a7b4
PH
256PH/27 When a message times out after an over-quota error from an Exim-imposed
257 quota, the bounce message says "mailbox is full". This message was not
258 being given when it was a system quota that was exceeded. It now should
259 be the same.
260
0e20aff9
MH
261MH/03 Made $recipients available in local_scan(). local_scan() already has
262 better access to the recipient list through recipients_list[], but
263 $recipients can be useful in postmaster-provided expansion strings.
264
ca86f471
PH
265PH/28 The $smtp_command and $smtp_command_argument variables were not correct
266 in the case of a MAIL command with additional options following the
267 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
268 were accidentally chopped off.
269
a14e5636
PH
270PH/29 SMTP synchronization checks are implemented when a command is read -
271 there is a check that no more input is waiting when there shouldn't be
272 any. However, for some commands, a delay in an ACL can mean that it is
273 some time before the response is written. In this time, more input might
274 arrive, invalidly. So now there are extra checks after an ACL has run for
275 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
276 pipelining has not been advertised.
277
ec95d1a6
PH
278PH/30 MH's patch to allow iscntrl() characters to be list separators.
279
42855d71
PH
280PH/31 Unlike :fail:, a custom message specified with :defer: was not being
281 returned in the SMTP response when smtp_return_error_details was false.
282 This has been fixed.
283
57c2c631
PH
284PH/32 Change the Dovecot authenticator to use read() and write() on the socket
285 instead of the C I/O that was originally supplied, because problems were
286 reported on Solaris.
287
58c01c94
PH
288PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
289 Exim which did not show up earlier: it was assuming that a call to
290 SSL_CTX_set_info_callback() might give an error value. In fact, there is
291 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
292 was a macro that became an assignment, so it seemed to work. This has
293 changed to a proper function call with a void return, hence the compile
294 error. Exim's code has been fixed.
295
dee5a20a
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296PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
297 cpus.
298
d2ee6114
PH
299PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
300
b2d5182b
PH
301PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
302
79749a79
PH
303PH/37 If a message is not accepted after it has had an id assigned (e.g.
304 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
305 "Completed" line in the log. When some messages of this type were
306 selected by exigrep, they were listed as "not completed". Others were
307 picked up by some special patterns. I have improved the selection
308 criteria to be more general.
79749a79 309
c456d9bb
PH
310PH/38 The host_find_failed option in the manualroute router can now be set
311 to "ignore", to completely ignore a host whose IP address cannot be
312 found. If all hosts are ignored, the behaviour is controlled by the new
313 host_all_ignored option.
314
cd9868ec
PH
315PH/39 In a list of hosts for manualroute, if one item (either because of multi-
316 homing or because of multiple MX records with /mx) generated more than
317 one IP address, and the following item turned out to be the local host,
318 all the secondary addresses of the first item were incorrectly removed
319 from the list, along with the local host and any following hosts (which
320 is what is supposed to happen).
321
ebeaf996
PH
322PH/40 When Exim receives a message, it writes the login name, uid, and gid of
323 whoever called Exim into the -H file. In the case of the daemon it was
324 behaving confusingly. When first started, it used values for whoever
325 started the daemon, but after a SIGHUP it used the Exim user (because it
326 calls itself on a restart). I have changed the code so that it now always
327 uses the Exim user.
328
2679d413
PH
329PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
330 message are rejected with the same error (e.g. no authentication or bad
331 sender address), and a DATA command is nevertheless sent (as can happen
332 with PIPELINING or a stupid MUA), the error message that was given to the
333 RCPT commands is included in the rejection of the DATA command. This is
334 intended to be helpful for MUAs that show only the final error to their
335 users.
336
84024b72
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337PH/42 Another patch from the Sieve maintainer.
338
8005d38e
SC
339SC/02 Eximstats - Differentiate between permanent and temporary rejects.
340 Eximstats - Fixed some broken HTML links and added missing column headers
341 (Jez Hancock).
342 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
343 columns for Rejects, Temp Rejects, Ham, and Spam rows.
344
3298c6c6
SC
345SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
346
a43a27c5
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347PH/43 Yet another patch from the Sieve maintainer.
348
58eb016e 349PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
350 the response to the final '.' that terminates a message, but only in the
351 case where the client has not sent further data following the '.'
352 (unfortunately, this is allowed). However, in many cases there won't be
353 any further data because there won't be any more messages to send. A call
354 to select() can be used: if it shows that the input is "ready", there is
355 either input waiting, or the socket has been closed. An attempt to read
356 the next input character can distinguish the two cases. Previously, Exim
58eb016e 357 would have sent an OK response which the client would never have see.
563b63fa
PH
358 This could lead to message repetition. This fix should cure that, at
359 least in a lot of common cases.
58eb016e 360
b43a74ea
PH
361PH/45 Do not advertise STARTTLS in response to HELP unless it would be
362 advertised in response to EHLO.
363
b4ed4da0 364
5dd1517f
PH
365Exim version 4.66
366-----------------
367
368PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
369 fixed by 4.65/MH/01 (is this a record?) are fixed:
370
371 (i) An empty string was always treated as zero by the numeric comparison
372 operators. This behaviour has been restored.
373
374 (ii) It is documented that the numeric comparison operators always treat
375 their arguments as decimal numbers. This was broken in that numbers
376 starting with 0 were being interpreted as octal.
377
378 While fixing these problems I realized that there was another issue that
379 hadn't been noticed. Values of message_size_limit (both the global option
380 and the transport option) were treated as octal if they started with 0.
381 The documentation was vague. These values are now always treated as
382 decimal, and I will make that clear in the documentation.
383
384
93cfa765
TK
385Exim version 4.65
386-----------------
387
388TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
389 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
390 versions. (#438)
391
d6066548
MH
392MH/01 Don't check that the operands of numeric comparison operators are
393 integers when their expansion is in "skipping" mode (fixes bug
394 introduced by 4.64-PH/07).
395
4362ff0d
PH
396PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
397 child addresses, Exim now panics and dies. Previously, because the count
398 is held in a short int, deliveries were likely to be lost. As such a
399 large number of recipients for a single message is ridiculous
400 (performance will be very, very poor), I have chosen to impose a limit
401 rather than extend the field.
402
93cfa765 403
944e9e9c
TF
404Exim version 4.64
405-----------------
aa41d2de 406
21d74bd9
TK
407TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
408 leftover -K file (the existence of which was triggered by #402).
409 While we were at it, introduced process PID as part of the -K
410 filename. This should rule out race conditions when creating
411 these files.
412
413TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
414 processing considerably. Previous code took too long for large mails,
415 triggering a timeout which in turn triggers #401.
416
417TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
418 in the DK code in transports.c. sendfile() is not really portable,
419 hence the _LINUX specificness.
944e9e9c
TF
420
421TF/01 In the add_headers option to the mail command in an Exim filter,
422 there was a bug that Exim would claim a syntax error in any
423 header after the first one which had an odd number of characters
424 in the field name.
425
2b1c6e3a
PH
426PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
427 callout verification, Exim cached a "reject" for the entire domain. This
428 is correct for most verifications, but it is not correct for a recipient
429 verification with use_sender or use_postmaster set, because in that case
430 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
431 case of MAIL FROM:<> rejection from other early rejections (e.g.
432 rejection of HELO). When verifying a recipient using a non-null MAIL
433 address, the cache is ignored if it shows MAIL FROM:<> rejection.
434 Whatever the result of the callout, the value of the domain cache is
435 left unchanged (for any other kind of callout, getting as far as trying
436 RCPT means that the domain itself is ok).
437
1f872c80
PH
438PH/02 Tidied a number of unused variable and signed/unsigned warnings that
439 gcc 4.1.1 threw up.
440
441PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
442 manifest itself as EPIPE rather than ECONNECT. When tidying away a
443 session, the daemon ignores ECONNECT errors and logs others; it now
444 ignores EPIPE as well.
445
d203e649
PH
446PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
447 (quoted-printable decoding).
448
cc2ed8f7 449PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 450 later the small subsequent patch to fix an introduced bug.
f951fd57 451
ddfcd446
PH
452PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
453
d45b1de8
PH
454PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
455
456PH/08 An error is now given if message_size_limit is specified negative.
457
38a0a95f 458PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 459 to be given (somewhat) arbitrary names.
38a0a95f 460
a2405d83
JJ
461JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
462 in 4.64-PH/09.
463
464JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
465 miscellaneous code fixes
466
6ea85e9a
PH
467PH/10 Added the log_reject_target ACL modifier to specify where to log
468 rejections.
469
26da7e20
PH
470PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
471 hostname. This is wrong, because it relates to the incoming message (and
472 probably the interface on which it is arriving) and not to the outgoing
473 callout (which could be using a different interface). This has been
474 changed to use the value of the helo_data option from the smtp transport
475 instead - this is what is used when a message is actually being sent. If
476 there is no remote transport (possible with a router that sets up host
477 addresses), $smtp_active_hostname is used.
6ea85e9a 478
14aa5a05 479PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 480 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
481 (a) The code assumed that strncpy() returns a negative number on buffer
482 overflow, which isn't the case. Replaced with Exim's string_format()
483 function.
484 (b) There were several signed/unsigned issues. I just did the minimum
485 hacking in of casts. There is scope for a larger refactoring.
486 (c) The code used strcasecmp() which is not a standard C function.
487 Replaced with Exim's strcmpic() function.
488 (d) The code set only $1; it now sets $auth1 as well.
489 (e) A simple test gave the error "authentication client didn't specify
490 service in request". It would seem that Dovecot has changed its
491 interface. Fortunately there's a specification; I followed it and
492 changed what the client sends and it appears to be working now.
493
ff75a1f7
PH
494PH/13 Added $message_headers_raw to provide the headers without RFC 2047
495 decoding.
496
e6f6568e
PH
497PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
498 address A is aliased to B and C, where B exists and C does not. Without
499 -v the output is "A verified" because verification stops after a
500 successful redirection if more than one address is generated. However,
501 with -v the child addresses are also verified. Exim was outputting "A
502 failed to verify" and then showing the successful verification for C,
503 with its parentage. It now outputs "B failed to verify", showing B's
504 parentage before showing the successful verification of C.
505
d6f6e0dc
PH
506PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
507 look up a TXT record in a specific list after matching in a combined
508 list.
509
322050c2
PH
510PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
511 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
512 they consult the DNS. I had assumed they would set it the way they
513 wanted; and indeed my experiments on Linux seem to show that in some
514 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
515 To be on the safe side, however, I have now made the interface to
516 host_find_byname() similar to host_find_bydns(), with an argument
517 containing the DNS resolver options. The host_find_byname() function now
518 sets these options at its start, just as host_find_bydns() does. The smtp
519 transport options dns_qualify_single and dns_search_parents are passed to
520 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
521 of host_find_byname() use the default settings of RES_DEFNAMES
522 (qualify_single) but not RES_DNSRCH (search_parents).
523
08955dd3
PH
524PH/17 Applied (a modified version of) Nico Erfurth's patch to make
525 spool_read_header() do less string testing, by means of a preliminary
526 switch on the second character of optional "-foo" lines. (This is
527 overdue, caused by the large number of possibilities that now exist.
528 Originally there were few.) While I was there, I also converted the
529 str(n)cmp tests so they don't re-test the leading "-" and the first
530 character, in the hope this might squeeze out yet more improvement.
531
1eccaa59
PH
532PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
533 flag allowing group syntax was set by the header_syntax check but not
534 turned off, possible causing trouble later; (2) The flag was not being
535 set at all for the header_verify test, causing "group"-style headers to
536 be rejected. I have now set it in this case, and also caused header_
537 verify to ignore an empty address taken from a group. While doing this, I
538 came across some other cases where the code for allowing group syntax
539 while scanning a header line wasn't quite right (mostly, not resetting
540 the flag correctly in the right place). These bugs could have caused
541 trouble for malformed header lines. I hope it is now all correct.
542
602e59e5
PH
543PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
544 with the "reply" argument non-NULL. The code, however (which originally
545 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
546 but it didn't always do it. This confused somebody who was copying the
547 code for some other use. I have removed all the tests.
548
411ef850
PH
549PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
550 feature that was used to support insecure browsers during the U.S. crypto
551 embargo. It requires special client support, and Exim is probably the
552 only MTA that supported it -- and would never use it because real RSA is
553 always available. This code has been removed, because it had the bad
554 effect of slowing Exim down by computing (never used) parameters for the
555 RSA_EXPORT functionality.
556
7befa435
PH
557PH/21 On the advice of Timo Sirainen, added a check to the dovecot
558 authenticator to fail if there's a tab character in the incoming data
559 (there should never be unless someone is messing about, as it's supposed
560 to be base64-encoded). Also added, on Timo's advice, the "secured" option
561 if the connection is using TLS or if the remote IP is the same as the
562 local IP, and the "valid-client-cert option" if a client certificate has
563 been verified.
564
48da4259 565PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
566 authenticators. This can be used for authorization after authentication
567 succeeds. (In the case of plaintext, it servers for both authentication
568 and authorization.)
569
48da4259
PH
570PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
571 if any retry times were supplied.
572
d1d5595c
PH
573PH/24 Exim crashed if verify=helo was activated during an incoming -bs
574 connection, where there is no client IP address to check. In this
575 situation, the verify now always succeeds.
576
0ef732d9
PH
577PH/25 Applied John Jetmore's -Mset patch.
578
328895cc
PH
579PH/26 Added -bem to be like -Mset, but loading a message from a file.
580
fd700877
PH
581PH/27 In a string expansion for a processed (not raw) header when multiple
582 headers of the same name were present, leading whitespace was being
583 removed from all of them, but trailing whitespace was being removed only
584 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
585 before concatenation. Completely empty headers in a concatenation (as
586 before) are ignored.
fd700877 587
8dce1a6f
PH
588PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
589 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
590
17af4a17
PH
591PH/29 [Removed. This was a change that I later backed out, and forgot to
592 correct the ChangeLog entry (that I had efficiently created) before
593 committing the later change.]
f6c332bd
PH
594
595PH/30 Exim was sometimes attempting to deliver messages that had suffered
596 address errors (4xx response to RCPT) over the same connection as other
597 messages routed to the same hosts. Such deliveries are always "forced",
598 so retry times are not inspected. This resulted in far too many retries
599 for the affected addresses. The effect occurred only when there were more
600 hosts than the hosts_max_try setting in the smtp transport when it had
601 the 4xx errors. Those hosts that it had tried were not added to the list
602 of hosts for which the message was waiting, so if all were tried, there
603 was no problem. Two fixes have been applied:
604
605 (i) If there are any address or message errors in an SMTP delivery, none
606 of the hosts (tried or untried) are now added to the list of hosts
607 for which the message is waiting, so the message should not be a
608 candidate for sending over the same connection that was used for a
609 successful delivery of some other message. This seems entirely
610 reasonable: after all the message is NOT "waiting for some host".
611 This is so "obvious" that I'm not sure why it wasn't done
612 previously. Hope I haven't missed anything, but it can't do any
613 harm, as the worst effect is to miss an optimization.
614
615 (ii) If, despite (i), such a delivery is accidentally attempted, the
616 routing retry time is respected, so at least it doesn't keep
617 hammering the server.
618
c1114884
PH
619PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
620 in ${readsocket because some servers need this prod.
621
7a0743eb
PH
622PH/32 Added some extra debug output when updating a wait-xxx database.
623
0d85fa3f
PH
624PH/33 The hint "could be header name not terminated by colon", which has been
625 given for certain expansion errors for a long time, was not being given
626 for the ${if def:h_colon_omitted{... case.
627
1bf43b78
PH
628PH/34 The spec says: "With one important exception, whenever a domain list is
629 being scanned, $domain contains the subject domain." There was at least
630 one case where this was not true.
631
520de300
PH
632PH/35 The error "getsockname() failed: connection reset by peer" was being
633 written to the panic log as well as the main log, but it isn't really
634 panic-worthy as it just means the connection died rather early on. I have
635 removed the panic log writing for the ECONNRESET error when getsockname()
636 fails.
637
48c7f9e2
PH
638PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
639 runs only) independently of the message's sender address. This meant
640 that, if the 4xx error was in fact related to the sender, a different
641 message to the same recipient with a different sender could confuse
642 things. In particualar, this can happen when sending to a greylisting
643 server, but other circumstances could also provoke similar problems.
644 I have changed the default so that the retry time for these errors is now
645 based a combination of the sender and recipient addresses. This change
646 can be overridden by setting address_retry_include_sender=false in the
647 smtp transport.
648
99ea1c86
PH
649PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
650 remote server are returned as part of bounce messages. This was not
651 happening for LMTP over a pipe (the lmtp transport), but now it is the
652 same for both kinds of LMTP.
653
a2042e78
PH
654PH/38 Despite being documented as not happening, Exim was rewriting addresses
655 in header lines that were in fact CNAMEs. This is no longer the case.
656
4fbcfc2e
PH
657PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
658 and queue runs started by the daemon processed all messages. This has
659 been fixed so that -R and -S can now usefully be given with -q<time>.
660
aa41d2de
PH
661PH/40 Import PCRE release 6.7 (fixes some bugs).
662
af561417
PH
663PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
664
3cc66b45
PH
665PH/42 Give an error if -q is specified more than once.
666
194cc0e4
PH
667PH/43 Renamed the variables $interface_address and $interface_port as
668 $received_ip_address and $received_port, to make it clear that these
669 values apply to message reception, and not to the outgoing interface when
670 a message is delivered. (The old names remain recognized, of course.)
671
a401ddaa
PH
672PH/44 There was no timeout on the connect() call when using a Unix domain
673 socket in the ${readsocket expansion. There now is.
674
4e88a19f
PH
675PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
676 be meaningful with "accept".
677
d7d7b289
SC
678SC/01 Eximstats V1.43
679 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
680
681SC/02 Eximstats V1.44
682 Use a glob alias rather than an array ref in the generated
683 parser. This improves both readability and performance.
684
685SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
686 Collect SpamAssassin and rejection statistics.
687 Don't display local sender or destination tables unless
688 there is data to show.
689 Added average volumes into the top table text output.
690
691SC/04 Eximstats V1.46
692 Collect data on the number of addresses (recipients)
693 as well as the number of messages.
694
695SC/05 Eximstats V1.47
696 Added 'Message too big' to the list of mail rejection
697 reasons (thanks to Marco Gaiarin).
698
699SC/06 Eximstats V1.48
700 Mainlog lines which have GMT offsets and are too short to
701 have a flag are now skipped.
702
703SC/07 Eximstats V1.49 (Alain Williams)
704 Added the -emptyok flag.
705
706SC/08 Eximstats V1.50
707 Fixes for obtaining the IP address from reject messages.
708
0ea2a468
JJ
709JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
710 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
711 whitesspace changes from 4.64-PH/27
712
713JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
714 match 4.64-PH/13
715
716JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
717 are found, allow negative numbers in numeric criteria)
718
719JJ/06 exipick.20061117.2, added new $message_body_missing variable
720
721JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
722 to match changes made in 4.64-PH/43
723
8a10f5a4
PH
724PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
725
30e18802
PH
726PH/47 Put in an explicit test for a DNS lookup of an address record where the
727 "domain" is actually an IP address, and force a failure. This locks out
728 those revolvers/nameservers that support "A-for-A" lookups, in
729 contravention of the specifications.
730
55728a4f
PH
731PH/48 When a host name was looked up from an IP address, and the subsequent
732 forward lookup of the name timed out, the host name was left in
733 $sender_host_name, contrary to the specification.
d7d7b289 734
d7837193
PH
735PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
736 restricted to single-key lookups, Exim was not diagnosing an error if
737 * or *@ was used with a query-style lookup.
738
87054a31
PH
739PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
740
ea2c01d2
MH
741MH/01 local_scan ABI version incremented to 1.1. It should have been updated
742 long ago, but noone interested enough thought of it. Let's just say that
743 the "1.1" means that there are some new functions that weren't there at
744 some point in the past.
745
e4fa6968
PH
746PH/51 Error processing for expansion failure of helo_data from an smtp
747 transport during callout processing was broken.
748
56f5d9bd
PH
749PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
750 tested/used via the -bh/-bhc/-bs options.
751
922e1c28
PH
752PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
753 bug, fixed in subsequent PCRE releases).
754
21eb6e72
PH
755PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
756 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
757
a0540757
PH
758PH/55 Check for a ridiculously long file name in exim_dbmbuild.
759
944e9e9c 760
478be7b0
SC
761Exim version 4.63
762-----------------
763
764SC/01 Use a glob alias rather than an array ref in eximstats generated
765 parser. This improves both readability and performance.
766
767SC/02 Collect SpamAssassin and rejection statistics in eximstats.
768 Don't display local sender or destination tables in eximstats unless
769 there is data to show.
770 Added average volumes into the eximstats top table text output.
771
772SC/03 Collect data on the number of addresses (recipients) as well
773 as the number of messages in eximstats.
774
2b965a65
TF
775TF/01 Correct an error in the documentation for the redirect router. Exim
776 does (usually) call initgroups() when daemonizing.
478be7b0 777
45b91596
PH
778TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
779 with consistent privilege compared to when running as a daemon.
478be7b0 780
c59f5781
TF
781TF/03 Note in the spec that $authenticated_id is not set for local
782 submissions from trusted users.
783
90fc3069
TF
784TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
785 Thanks to Dean Brooks <dean@iglou.com> for the patch.
786
6083aca0
TF
787TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
788 by adding some example configuration directives to the default
789 configuration file. A little bit of work is required to uncomment the
790 directives and define how usernames and passwords are checked, but
791 there is now a framework to start from.
792
765b530f
PH
793PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
794 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
795 without this. I don't know how relevant this is to other LDAP libraries.
796
4e167a8c
PH
797PH/02 Add the verb name to the "unknown ACL verb" error.
798
4608d683
PH
799PH/03 Magnus Holmgren's patch for filter_prepend_home.
800
b8dc3e4a
PH
801PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
802
5418e93b
PH
803PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
804 directory not expanded when it should be if an expanded home directory
805 was set for the address (which is overridden by the transport).
806
b4a9bda2
PH
807PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
808 libradius.
809
45b91596
PH
810PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
811 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
812 because it is too late at that time, and has no effect.
813
5547e2c5
PH
814PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
815 security issue with \' (bugzilla #107). I could not use the
816 PQescapeStringConn() function, because it needs a PGconn value as one of
817 its arguments.
818
dbcef0ea
PH
819PH/08 When testing addresses using -bt, indicate those final addresses that
820 are duplicates that would not cause an additional delivery. At least one
821 person was confused, thinking that -bt output corresponded to deliveries.
822 (Suppressing duplicates isn't a good idea as you lose the information
823 about possibly different redirections that led to the duplicates.)
824
25257489
PH
825PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
826 systems where poll() doesn't work, in particular OS X.
827
c816d124
PH
828PH/10 Added more information to debugging output for retry time not reached.
829
a9ccd69a
PH
830PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
831 operations in malware.c.
832
75fa1910
PH
833PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
834 signatures.
835
a7d7aa58
PH
836PH/13 If write_rejectlog was set false when logging was sent to syslog with
837 syslog_duplication set false, log lines that would normally be written
838 both the the main log and to the reject log were not written to syslog at
839 all.
840
42119b09
PH
841PH/14 In the default configuration, change the use of "message" in ACL warn
842 statements to "add_header".
843
41609df5
PH
844PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
845 not followed by a command (e.g. "seen endif").
846
a5bd321b
PH
847PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
848 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
849 latter.
850
e85a7ad5 851PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
852 so that it is now:
853
e85a7ad5
PH
854 ${if or { \
855 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
856 { match{$h_precedence:}{(?i)bulk|list|junk} } \
857 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
858 }{no}{yes}}
859
e85a7ad5
PH
860 The Auto-Submitted: and various List- headers are standardised, whereas I
861 don't think Precedence: ever was.
5dff5817 862
d8fe1c03
PH
863PH/18 Refactored debugging code in route_finduser() to show more information,
864 in particular, the error code if getpwnam() issues one.
865
16282d2b
PH
866PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
867 This is apparently needed in addition to the PH/07 change above to avoid
868 any possible encoding problems.
869
35d40a98
PH
870PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
871 but not after initializing Perl.
872
034d99ab
PH
873PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
874 output them only if debugging. By default they are written stderr,
875 apparently, which is not desirable.
876
6ec97b1b
PH
877PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
878 queries.
879
e22ca4ac
JJ
880JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
881 --not options
882
883JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
884
33d73e3b
PH
885PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
886 authenticated or an ident call has been made. Suppress the default
887 values for $authenticated_id and $authenticated_sender (but permit -oMai
888 and -oMas) when testing with -bh.
889
9ecb03f3
PH
890PH/24 Re-jigged the order of the tests in the default configuration so that the
891 tests for valid domains and recipients precede the DNS black list and CSA
892 tests, on the grounds that those ones are more expensive.
893
084efe8d
PH
894PH/25 Exim was not testing for a space following SMTP commands such as EHLO
895 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
896 This bug exists in every version of Exim that I still have, right back to
897 0.12.
898
366fc9f0
PH
899PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
900 However, an attempt to turn on case-sensitivity in a regex key by
901 including (?-i) didn't work because the subject string was already
902 lowercased, and the effects were non-intuitive. It turns out that a
903 one-line patch can be used to allow (?-i) to work as expected.
904
c59f5781 905
c887c79e
TF
906Exim version 4.62
907-----------------
908
909TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
910 other effects) broke the use of negated acl sub-conditions.
911
1cce3af8
PH
912PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
913 patch).
914
afb3eaaf
PH
915PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
916 "Deny" causes Exim to reject the incoming connection with a 554 error.
917 Unfortunately, if there is a major crisis, such as a disk failure,
918 tcp-wrappers gives "deny", whereas what one would like would be some
919 kind of temporary error. A kludge has been added to help with this.
920 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
921 554 error is used if errno is still zero or contains ENOENT (which occurs
922 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
923 451 error is used.
924
e173618b
PH
925PH/03 Add -lutil to the default FreeBSD LIBS setting.
926
dd16e114
PH
927PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
928 errors. Otherwise a message that provokes a temporary error (when other
929 messages do not) can cause a whole host to time out.
930
f7fd3850
PH
931PH/05 Batch deliveries by appendfile and pipe transports did not work when the
932 addresses were routed directly to files or pipes from a redirect router.
933 File deliveries just didn't batch; pipe deliveries might have suffered
934 odd errors.
935
d87df92c
PH
936PH/06 A failure to get a lock for a hints database would erroneously always say
937 "Failed to get write lock", even when it was really a read lock.
938
7e9f683d
PH
939PH/07 The appendfile transport was creating MBX lock files with a fixed mode
940 of 0600. This has been changed to use the value of the lockfile_mode
941 option (which defaults to 0600).
942
bfad5236
PH
943PH/08 Applied small patch from the Sieve maintainer.
944
01c490df
PH
945PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
946 folder from quota calculations, a direct delivery into this folder messed
947 up the contents of the maildirsize file. This was because the regex was
948 used only to exclude .Trash (or whatever) when the size of the mailbox
949 was calculated. There was no check that a delivery was happening into an
950 excluded directory. This bug has been fixed by ignoring all quota
951 processing for deliveries into excluded directories.
952
d6629cdc
PH
953PH/10 Added the maildirfolder_create_regex option to appendfile.
954
1cce3af8 955
214e2000
PH
956Exim version 4.61
957-----------------
958
959PH/01 The code for finding all the local interface addresses on a FreeBSD
960 system running IPv6 was broken. This may well have applied to all BSD
961 systems, as well as to others that have similar system calls. The broken
962 code found IPv4 interfaces correctly, but gave incorrect values for the
963 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
964 that it would not match correctly against @[] and not recognize the IPv6
965 addresses as local.
966
f9daeae0
PH
967PH/02 The ipliteral router was not recognizing addresses of the form user@
968 [ipv6:....] because it didn't know about the "ipv6:" prefix.
969
7e66e54d
PH
970PH/03 Added disable_ipv6.
971
c8ea1597
PH
972PH/04 Changed $reply_address to use the raw form of the headers instead of the
973 decoded form, because it is most often used to construct To: headers
974 lines in autoreplies, and the decoded form may well be syntactically
975 invalid. However, $reply_address has leading white space removed, and all
976 newlines turned into spaces so that the autoreply transport does not
977 grumble.
978
911f6fde
PH
979PH/05 If group was specified without a user on a router, and no group or user
980 was specified on a transport, the group from the router was ignored.
981
47ca6d6c
PH
982PH/06 Increased the number of ACL variables to 20 of each type, and arranged
983 for visible compile-time settings that can be used to change these
984 numbers, for those that want even more. Backwards compatibility with old
985 spool files has been maintained. However, going back to a previous Exim
986 release will lost any variables that are in spool files.
987
ed0e9820
PH
988PH/07 Two small changes when running in the test harness: increase delay when
989 passing a TCP/IP connection to a new process, in case the original
990 process has to generate a bounce, and remove special handling of
991 127.0.0.2 (sic), which is no longer necessary.
992
eff37e47
PH
993PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
994 be the same on different OS.
995
1921d2ea
PH
996PH/09 Moved a debug statement in filter processing to avoid a race problem when
997 testing.
998
b3f69ca8
JJ
999JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
1000 whether --show-vars was specified or not
1001
1002JJ/02 exipick: Added support for new ACL variable spool format introduced
1003 in 4.61-PH/06
1004
424a1c63
PH
1005PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
1006 syntactically invalid From: or Reply-to: line, and a filter used this to
1007 generate an autoreply, and therefore failed to obtain an address for the
1008 autoreply, Exim could try to deliver to a non-existent relative file
1009 name, causing unrelated and misleading errors. What now happens is that
1010 it logs this as a hard delivery error, but does not attempt to create a
1011 bounce message.
1012
7a100415
PH
1013PH/11 The exinext utility has a -C option for testing purposes, but although
1014 the given file was scanned by exinext itself; it wasn't being passed on
1015 when Exim was called.
1016
19b9dc85
PH
1017PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
1018 an end-of-file indication when reading a command response.
1019
309bd837
PH
1020PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
1021 compiled. In many other places in Exim, IPv6 addresses are always
1022 recognized, so I have changed this. It also means that IPv4 domain
1023 literals of the form [IPV4:n.n.n.n] are now always recognized.
1024
59e82a2a
PH
1025PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
1026 used if the router is not running as root, for example, when verifying at
1027 ACL time, or when using -bh. The debugging output from this situation was
1028 non-existent - all you got was a failure to exec. I have made two
1029 changes:
1030
1031 (a) Failures to set uid/gid, the current directory, or a process leader
1032 in a subprocess such as that created by queryprogram now generate
1033 suitable debugging ouput when -d is set.
1034
1035 (b) The queryprogram router detects when it is not running as root,
1036 outputs suitable debugging information if -d is set, and then runs
1037 the subprocess without attempting to change uid/gid.
1038
9edc04ce
PH
1039PH/15 Minor change to Makefile for building test_host (undocumented testing
1040 feature).
1041
1349e1e5
PH
1042PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1043 additional section of a DNS packet that returns MX or SRV records.
1044 Instead, it always explicitly searches for A/AAAA records. This avoids
1045 major problems that occur when a DNS server includes only records of one
1046 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1047 fixed another bug: if SRV records were looked up and the corresponding
1048 address records were *not* found in the additional section, the port
1049 values from the SRV records were lost.
1050
ea49d0e1
PH
1051PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1052 using the correct key (the original address) when searching the retry
1053 rules in order to find which one to use for generating the retry hint.
1054
064a94c9
PH
1055PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1056 adding the default one. Similarly, if it contains a Reply-To: header, the
1057 errors_reply_to option, if set, is not used.
1058
727071f8
PH
1059PH/19 When calculating a retry time, Exim used to measure the "time since
1060 failure" by looking at the "first failed" field in the retry record. Now
1061 it does not use this if it is later than than the arrival time of the
1062 message. Instead it uses the arrival time. This makes for better
1063 behaviour in cases where some deliveries succeed, thus re-setting the
1064 "first failed" field. An example is a quota failure for a huge message
1065 when small messages continue to be delivered. Without this change, the
1066 "time since failure" will always be short, possible causing more frequent
1067 delivery attempts for the huge message than are intended.
dd16e114 1068 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1069
f78eb7c6
PH
1070PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1071 $1, $2, $3) because the numerical variables can be reset during some
1072 expansion items (e.g. "match"), thereby losing the authentication data.
1073
21c28500
PH
1074PH/21 Make -bV show the size of off_t variables so that the test suite can
1075 decide whether to run tests for quotas > 2G.
1076
1077PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1078 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1079 filecount value is greater than 2G or if a quota value is greater than 2G
1080 on a system where the size of off_t is not greater than 4, a panic error
1081 is given.
1082
1688f43b
PH
1083PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1084 never match. The debug and -bh output now contains an explicit error
1085 message indicating a malformed IPv4 address or mask.
1086
1087PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1088 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1089 PH/23 above applies.
1090
9675b384
PH
1091PH/25 Do not write to syslog when running in the test harness. The only
1092 occasion when this arises is a failure to open the main or panic logs
1093 (for which there is an explicit test).
1094
6a3f1455
PH
1095PH/26 Added the /no_tell option to "control=freeze".
1096
dac79d3e
PH
1097PH/27 If a host name lookup failed very early in a connection, for example, if
1098 the IP address matched host_lookup and the reverse lookup yielded a name
1099 that did not have a forward lookup, an error message of the form "no IP
1100 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1101 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1102
5977a0b3
PH
1103PH/28 An enabling patch from MH: add new function child_open_exim2() which
1104 allows the sender and the authenticated sender to be set when
1105 submitting a message from within Exim. Since child_open_exim() is
1106 documented for local_scan(), the new function should be too.
1107
c91535f3
PH
1108PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1109 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1110 results in an empty string is now treated as unset.
1111
0d46a8c8
PH
1112PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1113
278c6e6c
PH
1114PH/31 Added sender_verify_fail logging option.
1115
2cbb4081
PH
1116PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1117 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1118 tidied the source and removed it altogether.
1119
3eef829e
PH
1120PH/33 When a queue run was abandoned because the load average was too high, a
1121 log line was always written; now it is written only if the queue_run log
1122 selector is set. In addition, the log line for abandonment now contains
1123 information about the queue run such as the pid. This is always present
1124 in "start" and "stop" lines but was omitted from the "abandon" line.
1125
1ab95fa6
PH
1126PH/34 Omit spaces between a header name and the colon in the error message that
1127 is given when verify = headers_syntax fails (if there are lots of them,
1128 the message gets confusing).
1129
230205fc
PH
1130PH/35 Change the default for dns_check_names_pattern to allow slashes within
1131 names, as there are now some PTR records that contain slashes. This check
1132 is only to protect against broken name servers that fall over on strange
1133 characters, so the fact that it applies to all lookups doesn't matter.
1134
75e0e026
PH
1135PH/36 Now that the new test suite is complete, we can remove some of the
1136 special code in Exim that was needed for the old test suite. For example,
1137 sorting DNS records because real resolvers return them in an arbitrary
1138 order. The new test suite's fake resolver always returns records in the
1139 same order.
1140
1141PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1142 bounces) except when queue_only is set, to avoid logging races between
1143 the different processes.
1144
145396a6
PH
1145PH/38 Panic-die if .include specifies a non-absolute path.
1146
3cd34f13
PH
1147PH/39 A tweak to the "H" retry rule from its user.
1148
11121d3d
JJ
1149JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1150 a label. They prevented compilation on older perls.
1151
1152JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1153 a warning to be raised on newish perls.
1154
1155JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1156 on queue. Changes to match documented behaviour of showing count of
1157 messages matching specified criteria.
1158
8def5aaf
PH
1159PH/40 Changed the default ident timeout from 30s to 5s.
1160
929ba01c
PH
1161PH/41 Added support for the use of login_cap features, on those BSD systems
1162 that have them, for controlling the resources used by pipe deliveries.
1163
2632889e
PH
1164PH/42 The content-scanning code uses fopen() to create files in which to put
1165 message data. Previously it was not paying any attention to the mode of
1166 the files. Exim runs with umask(0) because the rest of the code creates
1167 files with open(), and sets the required mode explicitly. Thus, these
1168 files were ending up world-writeable. This was not a big issue, because,
1169 being within the spool directory, they were not world-accessible. I have
1170 created a function called modefopen, which takes an additional mode
1171 argument. It sets umask(777), creates the file, chmods it to the required
1172 mode, then resets the umask. All the relevant calls to fopen() in the
1173 content scanning code have been changed to use this function.
1174
944a9c55
PH
1175PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1176 to 24 hours. This avoids potential overflow problems when processing G
1177 and H retry rules. I suspect nobody ever tinkers with this value.
1178
4a23603b
PH
1179PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1180
4730f942
PH
1181PH/45 When the plaintext authenticator is running as a client, the server's
1182 challenges are checked to ensure they are valid base64 strings. By
1183 default, the authentication attempt is cancelled if an invalid string is
1184 received. Setting client_ignore_invalid_base64 true ignores these errors.
1185 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1186 they are received. Thus, the responses can be made to depend on the
1187 challenges. If an invalid string is ignored, an empty string is placed in
1188 the variable.
1189
30dba1e6
PH
1190PH/46 Messages that are created by the autoreply transport now contains a
1191 References: header, in accordance with RFCs 2822 and 3834.
1192
382afc6b
PH
1193PH/47 Added authenticated_sender_force to the smtp transport.
1194
a86229cf
PH
1195PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1196
50c99ba6
PH
1197PH/49 Installed latest patch from the Sieve maintainer.
1198
d35e429d
PH
1199PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1200 was also set, the appendfile transport was unnecessarily scanning a
1201 directory of message files (e.g. for maildir delivery) to find the count
1202 of files (along with the size), even though it did not need this
1203 information. It now does the scan only if it needs to find either the
1204 size of the count of files.
1205
f90d018c
PH
1206PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1207
75def545
PH
1208PH/52 Two bugs concerned with error handling when the smtp transport is
1209 used in LMTP mode:
1210
1211 (i) Exim was not creating retry information for temporary errors given
1212 for individual recipients after the DATA command when the smtp transport
1213 was used in LMTP mode. This meant that they could be retried too
1214 frequently, and not timed out correctly.
1215
1216 (ii) Exim was setting the flag that allows error details to be returned
1217 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1218 recipients that were returned after the DATA command.
1219
1220PH/53 This is related to PH/52, but is more general: for any failing address,
1221 when detailed error information was permitted to be returned to the
1222 sender, but the error was temporary, then after the final timeout, only
1223 "retry timeout exceeded" was returned. Now it returns the full error as
1224 well as "retry timeout exceeded".
1225
c46782ef
PH
1226PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1227 do this, and (what is worse) MTAs that accept it.
1228
71fafd95
PH
1229PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1230 will now be deprecated.
1231
2c5db4fd
PH
1232PH/56 New os.c-cygwin from the Cygwin maintainer.
1233
9cf6b11a
JJ
1234JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1235 formats (previously only available in exim formats via -bpr, -bpru,
1236 and -bpra. Now also available in native and exiqgrep formats)
1237
1238JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1239 with very large, slow to parse queues
1240
1241JJ/08 exipick: added ! as generic prefix to negate any criteria format
1242
1243JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1244
898d150f
PH
1245PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1246 responses to authentication challenges, though it was showing the
1247 challenges; (ii) I've removed the CR characters from the debug output for
1248 SMTP output lines.
1249
46218253
PH
1250PH/58 Allow for the insertion of a newline as well as a space when a string
1251 is turned into more than one encoded-word during RFC 2047 encoding. The
1252 Sieve code now uses this.
1253
e97957bc
PH
1254PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1255 data_4xx, lost_connection, tls_required.
1256
81e509d7
PH
1257PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1258 message was being sent as an SMTP response.
1259
3d240ff7
PH
1260PH/61 Add -l and -k options to exicyclog.
1261
b37c4101
PH
1262PH/62 When verifying, if an address was redirected to one new address, so that
1263 verification continued, and the new address failed or deferred after
1264 having set something in $address_data, the value of $address_data was not
1265 passed back to the ACL. This was different to the case when no
1266 redirection occurred. The value is now passed back in both cases.
1267
79378e0f
PH
1268PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1269 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1270 use login_cap.h, so on its own it isn't the distinguishing feature. The
1271 new name refers directly to the setclassresources() function.
1272
e49c7bb4
PH
1273PH/65 Added configuration files for NetBSD3.
1274
d114ec46
PH
1275PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1276
f3d7df6c
PH
1277PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1278 is preferred over IPv4.
1279
715ab376
PH
1280PH/68 The bounce_return_message and bounce_return_body options were not being
1281 honoured for bounces generated during the reception of non-SMTP messages.
1282 In particular, this applied to messages rejected by the ACL. This bug has
1283 been fixed. However, if bounce_return_message is true and bounce_return_
1284 body is false, the headers that are returned for a non-SMTP message
1285 include only those that have been read before the error was detected.
1286 (In the case of an ACL rejection, they have all been read.)
1287
6b31b150
PH
1288PH/69 The HTML version of the specification is now built in a directory called
1289 spec_html instead of spec.html, because the latter looks like a path with
1290 a MIME-type, and this confuses some software.
1291
1292PH/70 Catch two compiler warnings in sieve.c.
1293
d515a917
PH
1294PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1295 function verify_get_ident() calls ip_connect() to connect a socket, but
1296 if the "connect()" function timed out, ip_connect() used to close the
1297 socket. However, verify_get_ident() also closes the socket later, and in
1298 between Exim writes to the log, which may get opened at this point. When
1299 the socket was closed in ip_connect(), the log could get the same file
1300 descriptor number as the socket. This naturally causes chaos. The fix is
1301 not to close the socket in ip_connect(); the socket should be closed by
1302 the function that creates it. There was only one place in the code where
1303 this was missing, in the iplookup router, which I don't think anybody now
1304 uses, but I've fixed it anyway.
1305
9b8fadde
PH
1306PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1307 well as to direct DNS lookups. Otherwise the handling of names in host
1308 lists is inconsistent and therefore confusing.
1309
214e2000 1310
5de37277
PH
1311Exim version 4.60
1312-----------------
1313
cc38ddbf
PH
1314PH/01 Two changes to the default runtime configuration:
1315
1316 (1) Move the checks for relay_from_hosts and authenticated clients from
1317 after to before the (commented out) DNS black list checks.
1318
1319 (2) Add control=submission to the relay_from_hosts and authenticated
1320 clients checks, on the grounds that messages accepted by these
1321 statements are most likely to be submissions.
5de37277 1322
72fdd6ae
PH
1323PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1324
1325 (1) Generate an error if the third argument for the ${prvs expansion is
1326 not a single digit.
1327
1328 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1329 string.
1330
1331 (3) Reset the variables that are obtained from the first argument of
1332 ${prvscheck and used in the second argument before leaving the code,
1333 because their memory is reclaimed, so using them afterwards may do
1334 silly things.
1335
1336 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1337 one (it's much easier than Tom thought :-).
1338
1339 (5) Because of (4), we can now allow for the use of $prvscheck_result
1340 inside the third argument.
cb9328de 1341
cb741023
PH
1342PH/03 For some reason, the default setting of PATH when running a command from
1343 a pipe transport was just "/usr/bin". I have changed it to
1344 "/bin:/usr/bin".
1345
f174f16e
PH
1346PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1347 anything to be listed in the output from -bV.
b2f5a032 1348
c25242d7
PH
1349PH/05 When a filter generated an autoreply, the entire To: header line was
1350 quoted in the delivery log line, like this:
1351
1352 => >A.N.Other <ano@some.domain> <original@ddress> ...
1353
1354 This has been changed so that it extracts the operative address. There
1355 may be more than one such address. If so, they are comma-separated, like
1356 this:
1357
1358 => >ano@some.domain,ona@other.domain <original@ddress> ...
1359
82c19f95
PH
1360PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1361 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1362 not being looked up in the rDNS to get a host name, Exim was showing the
1363 IP address twice in Received: lines, even though the IP addresses were
1364 identical. For example:
1365
1366 Received: from [1.2.3.4] (helo=[1.2.3.4])
1367
1368 However, if the real host name was known, it was omitting the HELO data
1369 if it matched the actual IP address. This has been tidied up so that it
1370 doesn't show the same IP address twice.
1371
d7ffbc12
PH
1372PH/07 When both +timestamp and +memory debugging was on, the value given by
1373 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1374 called by the debug printing, thereby overwriting the timestamp buffer.
1375 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1376
9f526266
PH
1377PH/08 When the original message was included in an autoreply transport, it
1378 always said "this is a copy of the message, including all the headers",
1379 even if body_only or headers_only was set. It now gives an appropriate
1380 message.
1381
87fcc8b9
PH
1382PH/09 Applied a patch from the Sieve maintainer which:
1383
1384 o fixes some comments
1385 o adds the (disabled) notify extension core
1386 o adds some debug output for the result of if/elsif tests
1387 o points to the current vacation draft in the documentation
1388 and documents the missing references header update
1389
1390 and most important:
1391
1392 o fixes a bug in processing the envelope test (when testing
1393 multiple envelope elements, the last element determinted the
1394 result)
1395
456682f5
PH
1396PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1397 Electronic Mail") by including:
1398
1399 Auto-submitted: auto-generated
1400
1401 in the messages that it generates (bounce messages and others, such as
1402 warnings). In the case of bounce messages for non-SMTP mesages, there was
1403 also a typo: it was using "Auto_submitted" (underscore instead of
1404 hyphen). Since every message generated by Exim is necessarily in response
1405 to another message, thes have all been changed to:
1406
1407 Auto-Submitted: auto-replied
1408
1409 in accordance with these statements in the RFC:
1410
1411 The auto-replied keyword:
1412
1413 - SHOULD be used on messages sent in direct response to another
1414 message by an automatic process,
1415
1416 - MUST NOT be used on manually-generated messages,
1417
1418 - MAY be used on Delivery Status Notifications (DSNs) and Message
1419 Disposition Notifications (MDNs),
1420
1421 - MUST NOT be used on messages generated by automatic or periodic
1422 processes, except for messages which are automatic responses to
1423 other messages.
1424
3e46c1aa
PH
1425PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1426 to the default Received: header definition.
456682f5 1427
49826d12
PH
1428PH/12 Added log selector acl_warn_skipped (default on).
1429
eba0c039
PH
1430PH/13 After a successful wildlsearch lookup, discard the values of numeric
1431 variables because (a) they are in the wrong storage pool and (b) even if
1432 they were copied, it wouldn't work properly because of the caching.
1433
a0d6ba8a
PH
1434PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1435 checking when decoding. Apparently there are clients that generate
1436 overlong encoded strings. Why am I not surprised?
1437
f0917727
PH
1438PH/15 If the first argument of "${if match_address" was not empty, but did not
1439 contain an "@" character, Exim crashed. Now it writes a panic log message
1440 and treats the condition as false.
1441
096fee00
PH
1442PH/16 In autoreply, treat an empty string for "once" the same as unset.
1443
024bd3c2
PH
1444PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1445 extension "envelope-auth". The code is finished and in agreement with
1446 other implementations, but there is no documentation so far and in fact,
1447 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1448 not changing the active code.
1449
1450 Print executed "if" and "elsif" statements when debugging is used. This
1451 helps a great deal to understand what a filter does.
1452
1453 Document more things not specified clearly in RFC3028. I had all this
1454 sorted out, when out of a sudden new issues came to my mind. Oops."
1455
df199fec
PH
1456PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1457 (Bugzilla #53).
1458
d27f1df3
PH
1459PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1460 canonical form (as documented). However, after a host name lookup from
1461 the IP address, check_host() was doing a simple string comparison with
1462 addresses acquired from the DNS when checking that the found name did
1463 have the original IP as one of its addresses. Since any found IPv6
1464 addresses are likely to be in abbreviated form, the comparison could
1465 fail. Luckily, there already exists a function for doing the comparison
1466 by converting both addresses to binary, so now that is used instead of
1467 the text comparison.
1468
96776534
PH
1469PH/20 There was another similar case to PH/19, when a complete host name was
1470 given in a host list; looking up its IP address could give an abbreviated
1471 form, whereas the current host's name might or might not be abbreviated.
1472 The same fix has been applied.
1473
5de37277 1474
9a799bc0
PH
1475Exim version 4.54
1476-----------------
1477
1478PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1479 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1480 It now does.
1481
99a4b039
PH
1482PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1483 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1484
1485PH/03 Typo: missing ".o" in src/pcre/Makefile.
1486
4b233853
PH
1487PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1488 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1489 Also, for "Auto-Submitted", treat anything other than "no" as
1490 non-personal, in accordance with RFC 3834. (Previously it treated
1491 anything starting "auto-" as non-personal.)
1492
8857ccfd
PH
1493TF/01 The control=submission/name=... option had a problem with syntax
1494 errors if the name included a slash character. The /name= option
1495 now slurps the rest of the string, so it can include any characters
1496 but it must come last in the list of options (after /sender_retain
1497 or /domain=).
1498
433a2980
PH
1499PH/05 Some modifications to the interface to the fake nameserver for the new
1500 testing suite.
1501
3e46c1aa 1502
9a799bc0 1503
e3a311ba
TK
1504Exim version 4.53
1505-----------------
1506
1507TK/01 Added the "success_on_redirect" address verification option. See
1508 NewStuff for rationale and an example.
1509
13b685f9
PH
1510PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1511
395ff96d
PH
1512PH/02 Patch to exigrep to allow it to work on syslog lines.
1513
5b68f6e4
PH
1514PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1515 fread() to skip over the body file's header line, because in Cygwin the
1516 header line is locked and is inaccessible.
1517
1ab52c69
PH
1518PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1519 co-exist for some time) to make it clear that it is the Exim ID that is
1520 referenced, not the Message-ID: header line.
1521
b07e6aa3
PH
1522PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1523 string_format() function, because snprintf() does not exist on all
1524 operating systems.
1525
254e032f
PH
1526PH/06 The use of forbid_filter_existstest now also locks out the use of the
1527 ${stat: expansion item.
1528
3af76a81
PH
1529PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1530 protocol synchronization error", to keep the pedants happy.
1531
2548ba04
PH
1532PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1533 well as for IRIX systems, when gcc is being used. See the host.c source
1534 file for comments.
1535
b6c6011d
PH
1536PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1537
cf39cf57
PH
1538PH/10 Named domain lists were not working if used in a queue_smtp_domains
1539 setting.
1540
f1513293
PH
1541PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1542 transport and to the smtp transport in LMTP mode.
1543
727549a4
PH
1544TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1545
af46795e
PH
1546PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1547 run a filter in a subprocess. This could lead to confusion in subsequent
1548 lookups in the parent process. There should also be a search_tidyup() at
1549 the end of the subprocess.
1550
d7b47fd0
PH
1551PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1552 only if the host matched helo_try_verify_hosts, which caused the
1553 verification to occur when the EHLO/HELO command was issued. The ACL just
1554 tested the remembered result. Now, if a previous verification attempt has
1555 not happened, "verify = helo" does it there and then.
1556
ee744174
JJ
1557JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1558
b582ab87
PH
1559TK/03 Fix log output including CR from clamd.
1560
41a13e0a
PH
1561PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1562 exist provoked a memory error which could cause a segfault.
1563
f625cc5a
PH
1564PH/15 Installed PCRE 6.2
1565
1566PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1567
21f7af35
PH
1568PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1569 of the problem. Specifically, suggested +O2 rather than +O1 for the
1570 HP-UX compiler.
1571
31480e42
PH
1572PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1573
2d280592
PH
1574PH/20 If a delivery was routed to a non-standard port by means of an SRV
1575 record, the port was not correctly logged when the outgoing_port log
1576 selector was set (it logged the transort's default port).
1577
7cd1141b
PH
1578PH/21 Added support for host-specific ports to manualroute, queryprogram,
1579 fallback_hosts, and "hosts" in the smtp transport.
1580
1581PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1582 host errors such as "Connection refused".
1583
750af86e
PH
1584PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1585 authentication with radiusclient 0.4.9:
1586
1587 - Error returned from rc_read_config was caught wrongly
1588 - Username/password not passed on to radius server due to wrong length.
1589
1590 The presumption is that some radiusclient API changes for 4.51/PH/17
1591 were not taken care of correctly. The code is still untested by me (my
1592 Linux distribution still has 0.3.2 of radiusclient), but it was
1593 contributed by a Radius user.
1594
1595PH/24 When doing a callout, the value of $domain wasn't set correctly when
1596 expanding the "port" option of the smtp transport.
1597
4304270b
TK
1598TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1599 while reading a MIME header. Thanks to Tom Hughes for a patch.
1600
750af86e
PH
1601PH/24 Include config.h inside local_scan.h so that configuration settings are
1602 available.
1603
64ffc24f
PH
1604PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1605 that in an ACL for RCPT (for example), you can examine exactly what was
1606 received.
1607
5dd9625b
PH
1608PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1609 commands, but it was not correctly comparing the address with the actual
1610 client host address. Thus, it would show the EHLO address in Received:
1611 header lines when this was not necessary.
1612
5591031b
PH
1613PH/27 Added the % operator to ${eval:}.
1614
ba18e66a
PH
1615PH/28 Exim tries to create and chdir to its spool directory when it starts;
1616 it should be ignoring failures (because with -C, for example, it has lost
1617 privilege). It wasn't ignoring creation failures other than "already
1618 exists".
1619
9cec981f
PH
1620PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1621 -bV or -d is used.
1622
aa2b5c79
PH
1623PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1624 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1625 too many continuations, the temporary file was not being removed, and the
1626 return code was incorrect.
aa2b5c79 1627
48a53b7f
PH
1628PH/31 Missing "BOOL" in function definition in filtertest.c.
1629
1c59d63b
PH
1630PH/32 Applied Sieve patches from the maintainer.
1631
671012da
TK
1632TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1633
1509d3a8
PH
1634PH/33 Added "verify = not_blind".
1635
1636PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1637 Local/Makefile (with some defaults set). These are used in built scripts
1638 such as exicyclog, but they have never been used in the exim_install
1639 script (though there are many overriding facilities there). I have
1640 arranged that the exim_install script now takes note of these two
1641 settings.
1642
1643PH/35 Installed configuration files for Dragonfly.
1644
2fe1a124
PH
1645PH/36 When a locally submitted message by a trusted user did not contain a
1646 From: header, and the sender address was obtained from -f or from an SMTP
1647 MAIL command, and the trusted user did not use -F to supply a sender
1648 name, $originator_name was incorrectly used when constructing a From:
1649 header. Furthermore, $originator_name was used for submission mode
1650 messages from external hosts without From: headers in a similar way,
1651 which is clearly wrong.
1652
8800895a
PH
1653PH/37 Added control=suppress_local_fixups.
1654
ccfdb010
PH
1655PH/38 When log_selector = +received_sender was set, and the addition of the
1656 sender made the log line's construction buffer exactly full, or one byte
1657 less than full, an overflow happened when the terminating "\n" was
1658 subsequently added.
1659
1130bfb0
PH
1660PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1661 when the result of a list match is failure because a DNS lookup failed.
1662
ebcb507f
PH
1663PH/40 RM_COMMAND is now used in the building process.
1664
c35e155c
PH
1665PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1666 the "build-* directories that it finds.
1667
95d1f782
PH
1668PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1669 address in a domain literal was a prefix of an interface address.
1670
fd6de02e
PH
1671PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1672 when verifying a sender address, unless rewrite_headers is false.
1673
58de37c5
PH
1674PH/44 Wrote a long comment about why errors_to addresses are verified as
1675 recipients, not senders.
1676
261cf466
TF
1677TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1678 the ratelimit ACL was added.
1679
3ee512ff
PH
1680PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1681
e08c430f
PH
1682PH/46 Added extra information about PostgreSQL errors to the error string.
1683
bef5a11f
PH
1684PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1685 avoiding the need to install special zones in a real server. This is
1686 backwards compatible; if it can't find the fake resolver, it drops back.
1687 Thus, both old and new test suites can be run.
1688
7546de58
TF
1689TF/02 Added util/ratelimit.pl
1690
e5d5a95f
TF
1691TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1692 clock is set back in time.
1693
2e88a017
TF
1694TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1695 Candler <B.Candler@pobox.com>.
1696
a5f65aa4
TF
1697TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1698 OK for addresses that are the result of redirections.
1699
e7726cbf
PH
1700PH/48 A number of further additions for the benefit of the new test suite,
1701 including a fake gethostbyname() that interfaces to the fake DNS resolver
1702 (see PH/47 above).
1703
a7fdad5b
TF
1704TF/06 The fix for widen_domains has also been applied to qualify_single and
1705 search_parents which are the other dnslookup options that can cause
1706 header rewrites.
1707
6af56900
PH
1708PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1709 type ("H").
1710
0925ede6
PH
1711PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1712
66afa403
TF
1713TF/07 Exim produced the error message "an SRV record indicated no SMTP
1714 service" if it encountered an MX record with an empty target hostname.
1715 The message is now "an MX or SRV record indicated no SMTP service".
1716
0154e85a
TF
1717TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1718 if the DNS of the sending site is misconfigured. This is quite a
1719 common situation. This change restores the behaviour of treating a
1720 helo verification defer as a failure.
1721
16f12c76
PH
1722PH/51 If self=fail was set on a router, the bounce message did not include the
1723 actual error message.
1724
bbe902f0 1725
e5a9dba6
PH
1726Exim version 4.52
1727-----------------
1728
1729TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1730
22c3b60b
PH
1731PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1732 command itself ended in error, the underlying message about the transport
1733 filter timeout was being overwritten with the pipe command error. Now the
1734 underlying error message should be appended to the second error message.
1735
06a9b4b5
PH
1736TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1737
c1ac6996
PH
1738PH/02 Reduce the amount of output that "make" produces by default. Full output
1739 can still be requested.
1740
9c7a242c
PH
1741PH/03 The warning log line about a condition test deferring for a "warn" verb
1742 was being output only once per connection, rather than after each
1743 occurrence (because it was using the same function as for successful
1744 "warn" verbs). This seems wrong, so I have changed it.
1745
87ba3f5f
PH
1746TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1747 it should not have, which might have caused a crash in the right
1748 circumstances, but probably never did.
1749
1750PH/04 Installed a modified version of Tony Finch's patch to make submission
1751 mode fix the return path as well as the Sender: header line, and to
1752 add a /name= option so that you can make the user's friendly name appear
1753 in the header line.
1754
29aba418
TF
1755TF/03 Added the control = fakedefer ACL modifier.
1756
fe0dab11
TF
1757TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1758 Mark Lowes for thorough testing.
870f6ba8 1759
11d337a4
TK
1760TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1761
1762TK/03 Merged latest SRS patch from Miles Wilton.
1763
415c8f3b
PH
1764PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1765 with the definition in sysexits.h (which is #included earlier).
1766 Fortunately, Exim does not actually use EX_OK. The code used to try to
1767 preserve the sysexits.h value, by assumimg that macro definitions were
1768 scanned for macro replacements. I have been disabused of this notion,
1769 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1770
958541e9
PH
1771PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1772 in the smtp transport. When a block could not be written in a single
1773 write() function, the timeout was being re-applied to each part-write.
1774 This seems wrong - if the receiver was accepting one byte at a time it
1775 would take for ever. The timeout is now adjusted when this happens. It
1776 doesn't have to be particularly precise.
1777
c206415f
TK
1778TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1779 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1780
2a4be8f9
PH
1781PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1782 without a domain if the check to <postmaster@domain> fails.
1783
1cba11c5
SC
1784SC/01 Eximstats: added -xls and the ability to specify output files
1785 (patch written by Frank Heydlauf).
1786
1787SC/02 Eximstats: use FileHandles for outputing results.
1788
1789SC/03 Eximstats: allow any combination of xls, txt, and html output.
1790
1791SC/04 Eximstats: fixed display of large numbers with -nvr option
1792
1793SC/05 Eximstats: fixed merging of reports with empty tables.
1794
1795SC/06 Eximstats: added the -include_original_destination flag
1796
1797SC/07 Eximstats: removed tabs and trailing whitespace.
1798
1005d00e
TK
1799TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1800
1801TK/06 MBOX spool code: Add real "From " MBOX separator line
1802 so the .eml file is really in mbox format (even though
1803 most programs do not really care). Patch from Alex Miller.
1804
1805TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1806 The latter is generated from $received_to and is only set if the
1807 message has one envelope recipient. SA can use these headers,
1808 obviously out-of-the-box. Patch from Alex Miller.
1809
9b4768fa
PH
1810PH/08 The ${def test on a variable was returning false if the variable's
1811 value was "0", contrary to what the specification has always said!
1812 The result should be true unless the variable is empty.
1813
1814PH/09 The syntax error of a character other than { following "${if
1815 def:variable_name" (after optional whitespace) was not being diagnosed.
1816 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1817 accidental colon was present, for example, could give incorrect results.
1818
0d7eb84a
PH
1819PH/10 Tidied the code in a number of places where the st_size field of a stat()
1820 result is used (not including appendfile, where other changes are about
1821 to be made).
1822
1823PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1824 This involved changing a lot of size variables from int to off_t. It
1825 should work with maildirs and everything.
1826
40727bee
TK
1827TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1828 spamd dying while we are connected to it.
1829
554d2369
TF
1830TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1831 <jgh@wizmail.org>
1832
1f922db1
PH
1833PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1834 function for BDB 4.3.
1835
ef213c3b
PH
1836PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1837
8ac170f3
PH
1838PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1839 the sources for PCRE have been re-arranged and more files are now
1840 involved.
1841
b1c749bb
PH
1842PH/15 The code I had for printing potentially long long variables in PH/11
1843 above was not the best (it lost precision). The length of off_t variables
1844 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1845 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1846 to be "long long int" or "long int". This is needed for the internal
1847 formatting function string_vformat().
b1c749bb 1848
4aac9b49
PH
1849PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1850 the configuration file to be ":syslog", then the script "guesses" where
1851 the logs files are, rather than using the compiled in default. In our
1852 case the guess is not the same as the compiled default, so the script
1853 suddenly stopped working when I started to use syslog. The patch checks
1854 to see if log_file_path is "". If so, it attempts to read it from exim
1855 with no configuration file to get the compiled in version, before it
1856 falls back to the previous guessing code."
1857
294520c8
TK
1858TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1859 implementing BATV in an Exim configuration. See NewStuff for the gory
1860 details.
1861
5bd022fe
PH
1862PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1863 Makefile that are specific to HP-UX.
1864
90e9ce59
PH
1865PH/18 If the "use_postmaster" option was set for a recipient callout together
1866 with the "random" option, the postmaster address was used as the MAIL
1867 FROM address for the random test, but not for the subsequent recipient
1868 test. It is now used for both.
1869
5ea81592
PH
1870PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1871 patch removes a few documentation additions to RFC 3028, because the
1872 latest draft now contains them. It adds the new en;ascii-case comparator
1873 and a new error check for 8bit text in MIME parts. Comparator and
1874 require names are now matched exactly. I enabled the subaddress
1875 extension, but it is not well tested yet (read: it works for me)."
1876
c6c2dc1d
PH
1877PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1878 rework some of the code of TK/09 above to avoid the hardwired use of
1879 "%lld" and "long long". Replaced the call to snprintf() with a call to
1880 string_vformat().
1881
fffffe4c
PH
1882PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1883 records point to non-existent hosts", "retry timeout exceeded", and
1884 "retry time not reached for any host after a long failure period".
ca02eafb 1885
9a26b6b2
PH
1886PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1887 experimental DomainKeys support:
1888
1889 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1890 (2) On an error such as an illegally used "control", the wrong name for
1891 the control was given.
1892
1893 These problems did NOT occur unless DomainKeys support was compiled.
1894
4aee0225
PH
1895PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1896
32d668a5
PH
1897PH/24 Added ${if match_ip condition.
1898
8187c3f3
PH
1899PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1900 databases so that it will be absolutely obvious if a crash occurs in the
1901 DB library. This is a regular occurrence (often caused by mis-matched
1902 db.h files).
1903
ff790e47 1904PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1905 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1906 picked up on a user's system that detects such things. There doesn't seem
1907 to be a gcc warning option for this - only an attribute that has to be
1908 put on the function's prototype. It seems that in Fedora Core 4 they have
1909 set this on a number of new functions. No doubt there will be more in due
1910 course.
ff790e47 1911
5417f6d1
PH
1912PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1913 specify a transport. However, if an address that was verified by such a
1914 router was the subject of a callout, Exim crashed because it tried to
1915 read the rcpt_include_affixes from the non-existent transport. Now it
1916 just assumes that the setting of that option is false. This bug was
1917 introduced by 4.51/PH/31.
1918
59cf8544
PH
1919PH/28 Changed -d+all to exclude +memory, because that information is very
1920 rarely of interest, but it makes the output a lot bigger. People tend to
1921 do -d+all out of habit.
1922
e7ad8a65
PH
1923PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1924 code in os-type was giving problems when libc.so lives in lib64, like on
1925 x86_64 Fedora Core.
1926
ade42478
PH
1927PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1928 aren't the modern standard, and it seems that some systems' include files
1929 don't always have them. Exim was already checking for some of the newer
1930 ones like T_AAAA, and defining it itself. I've added checks for all the
1931 record types that Exim uses.
1932
182ad5cf
PH
1933PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1934 not automatically generating a new one, as it is supposed to. This
1935 prevented TLS from working. If the file did exist, but contained invalid
1936 data, a new version was generated, as expected. It was only the case of a
1937 non-existent file that was broken.
1938
b0d9fc80
TK
1939TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1940 with a change in libdomainkeys > 0.64.
1941
1942TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1943 from DNS. If the selector record carries the flag, it now has
1944 precedence over the domain-wide flag.
1945
1946TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1947
47c7a64a
PH
1948PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1949 the use of a port name that isn't defined in /etc/services) occurred, the
1950 message was deferred as in a normal delivery, and thus remained on the
1951 spool, instead of being failed because of the mua_wrapper setting. This
1952 is now fixed, and I tidied up some of the mua_wrapper messages at the
1953 same time.
1954
a388bce4
SC
1955SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1956 the messages in a hash of arrays rather than using individual hashes.
1957 This is a bit cleaner and results in dramatic memory savings, albeit
1958 at a slight CPU cost.
1959
1960SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1961 as requested by Marc Sherman.
1962
1963SC/10 Eximstats: added histograms for user specified patterns as requested
1964 by Marc Sherman.
1965
0793e4ed
SC
1966SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1967
c58b88df
PH
1968PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1969 fopen() in the content-scanning modules that did not already have it.
1970
e7ad8a65 1971
7982096b
PH
1972Exim version 4.51
1973-----------------
1974
1a46a8c5
PH
1975TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1976 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1977
2f079f46 1978TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1979
1980TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1981
1982PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1983 to test Sieve filters that use "vacation".
1984
1985PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1986 that changes the way the GnuTLS parameters are stored in the cache file.
1987 The new format can be generated externally. For backward compatibility,
1988 if the data in the cache doesn't make sense, Exim assumes it has read an
1989 old-format file, and it generates new data and writes a new file. This
1990 means that you can't go back to an older release without removing the
1991 file.
1992
1993PH/03 A redirect router that has both "unseen" and "one_time" set does not
1994 work if there are any delivery delays because "one_time" forces the
1995 parent to be marked "delivered", so its unseen clone is never tried
1996 again. For this reason, Exim now forbids the simultaneous setting of
1997 these two options.
1998
1999PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
2000 redirected to themselves ("homonym" addresses). Read the long ChangeLog
2001 entry if you want to know the details. The fix, however, neglected to
2002 consider the case when local delivery batching is involved. The test for
2003 "previously delivered" was not happening when checking to see if an
2004 address could be batched with a previous (undelivered) one; under
2005 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 2006 address.
1a46a8c5
PH
2007
2008PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
2009 in its include files, and this causes problems building Exim.
2010
2011PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
2012 header_syntax) but Exim was just ignoring anything given after a slash.
2013 In particular, this caused confusion with an attempt to use "verify =
2014 reverse_host_lookup/defer_ok". An error is now given when options are
2015 supplied for verify items that do not have them. (Maybe reverse_host_
2016 lookup should have a defer_ok option, but that's a different point.)
2017
2018PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
2019 defined by RFC 821) to 2048, because there were problems with some AUTH
2020 commands, and RFC 1869 says the size should be increased for extended
2021 SMTP commands that take arguments.
2022
2023PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
2024 Finch).
2025
2026PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
2027 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 2028
49c2d5ea
PH
2029PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
2030 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
2031 whatever). Otherwise the password may appear in the log. Following change
2032 PH/42 below, there is no longer a chance of it appearing in a bounce
2033 message.
49c2d5ea 2034
bf759a8b
PH
2035PH/11 Installed exipick version 20050225.0 from John Jetmore.
2036
83364d30
PH
2037PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2038 of its addresses was ever tried. (Bugzilla bug #2.)
2039
7999bbd7
PH
2040PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2041 the result incorrectly in the debug output. (It correctly added a newline
2042 to what was transported.)
2043
7dbf77c9
PH
2044TF/01 Added $received_time.
2045
74e0617f
PH
2046PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2047 commented out examples of how to interface to a virus scanner and to
2048 SpamAssassin. Also added commented examples of av_scanner and
2049 spamd_address settings.
2050
2f079f46
PH
2051PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2052 and controls are allowed in which ACLs. There were a couple of minor
2053 errors. Some of the entries in the conditions table (which is a table of
2054 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2055 negation of where the condition IS allowed.
2056
8c841523
PH
2057PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2058
7766a4f0
PH
2059PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2060 header file does not have a version number, so I've had to invent a new
2061 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2062 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2063 radiusclient), but it was contributed by a Radius user.
2064
8b417f2c
PH
2065PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2066 files or directories, for OpenSSL.
2067
901f42cb
PH
2068PH/19 When an Exim process that is running as root has to create an Exim log
2069 file, it does so in a subprocess that runs as exim:exim so as to get the
2070 ownership right at creation (otherwise, other Exim processes might see
2071 the file with the wrong ownership). There was no test for failure of this
2072 fork() call, which would lead to the process getting stuck as it waited
2073 for a non-existent subprocess. Forks do occasionally fail when resources
2074 run out. I reviewed all the other calls to fork(); they all seem to check
2075 for failure.
2076
f9b9210e
PH
2077PH/20 When checking for unexpected SMTP input at connect time (before writing
2078 the banner), Exim was not dealing correctly with a non-positive return
2079 from the read() function. If the client had disconnected by this time,
2080 the result was a log entry for a synchronization error with an empty
2081 string after "input=" when read() returned zero. If read() returned -1
2082 (an event I could not check), uninitialized data bytes were printed.
2083 There were reports of junk text (parts of files, etc) appearing after
2084 "input=".
2085
54cdb463
PH
2086PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2087
cf00dad6
PH
2088PH/22 Added support for macro redefinition, and (re)definition in between
2089 driver and ACL definitions.
2090
acb1b346
PH
2091PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2092 forgetting to use the resulting value; it was using the unexpanded value.
2093
c5ddb310
PH
2094PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2095 hadn't been configured. The fix is from Juergen Kreileder, who
2096 understands it better than I do:
2097
2098 "Here's what I see happening with three configured cyrus_sasl
2099 authenticators configured (plain, login, cram-md5):
2100
2101 On startup auth_cyrus_sasl_init() gets called for each of these.
2102 This means three calls to sasl_listmech() without a specified mech_list.
2103 => SASL tests which mechs of all available mechs actually work
2104 => three warnings about OTP not working
2105 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2106
2107 With the patch, sasl_listmech() also gets called three times. But now
2108 SASL's mech_list option is set to the server_mech specified in the the
2109 authenticator. Or in other words, the answer from sasl_listmech()
2110 gets limited to just the mech you're testing for (which is different
2111 for each call.)
2112 => the return list contains just 'plain' or 'login', 'cram-md5' or
2113 nothing depending on the value of ob->server_mech.
2114
2115 I've just tested the patch: Authentication still works fine,
2116 unavailable mechs specified in the exim configuration are still
2117 caught, and the auth.log warnings about OTP are gone."
2118
31619da6
PH
2119PH/25 When debugging is enabled, the contents of the command line are added
2120 to the debugging output, even when log_selector=+arguments is not
2121 specified.
2122
bebaf0fc
PH
2123PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2124 answer is "GNU", and only if the return is "GNU/something" is the answer
2125 "Linux".
2126
475fe28a
PH
2127PH/27 $acl_verify_message is now set immediately after the failure of a
2128 verification in an ACL, and so is available in subsequent modifiers. In
2129 particular, the message can be preserved by coding like this:
2130
2131 warn !verify = sender
2132 set acl_m0 = $acl_verify_message
2133
2134 Previously, $acl_verify_message was set only while expanding "message"
2135 and "log_message" when a very denied access.
2136
7e8bec7a
PH
2137PH/28 Modified OS/os.c-Linux with
2138
2139 -#ifndef OS_LOAD_AVERAGE
2140 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2141
2142 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2143 nomenclature these days.)
2144
e4a89c47
PH
2145PH/29 Installed patch from the Sieve maintainer that adds the options
2146 sieve_useraddress and sieve_subaddress to the redirect router.
2147
5ca2a9a1
PH
2148PH/30 In these circumstances:
2149 . Two addresses routed to the same list of hosts;
2150 . First host does not offer TLS;
2151 . First host accepts first address;
2152 . First host gives temporary error to second address;
2153 . Second host offers TLS and a TLS session is established;
2154 . Second host accepts second address.
2155 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2156 and peerdn, if requested) that were in fact used only for the second
2157 address.
7e8bec7a 2158
c688b954
PH
2159PH/31 When doing a callout as part of verifying an address, Exim was not paying
2160 attention to any local part prefix or suffix that was matched by the
2161 router that accepted the address. It now behaves in the same way as it
2162 does for delivery: the affixes are removed from the local part unless
2163 rcpt_include_affixes is set on the transport.
2164
fed77020
PH
2165PH/32 Add the sender address, as F=<...>, to the log line when logging a
2166 timeout during the DATA phase of an incoming message.
2167
7fe1560f
PH
2168PH/33 Sieve envelope tests were broken for match types other than :is. I have
2169 applied a patch sanctioned by the Sieve maintainer.
c688b954 2170
ebb6e6d5
PH
2171PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2172 the uid or gid is negative. A case of a negative gid caused this to be
2173 noticed. The fix allows for either to be negative.
2174
9c4e8f60
PH
2175PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2176 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2177 overlooked.
2178
2179PH/36 The change PH/12 above was broken. Fixed it.
2180
d7174846
PH
2181PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2182 the grounds that routing the same address twice would always produce the
2183 same answer. This might have been true once, but it is certainly no
2184 longer true now. Routing a child address may depend on the previous
2185 routing that produced that child. Some complicated redirection strategies
2186 went wrong when messages had multiple recipients, and made Exim's
2187 behaviour dependent on the order in which the addresses were given.
2188
2189 I have moved the duplicate checking until after the routing is complete.
2190 Exim scans the addresses that are assigned to local and remote
2191 transports, and removes any duplicates. This means that more work will be
2192 done, as duplicates will always all be routed, but duplicates are
2193 presumably rare, so I don't expect this is of any significance.
2194
2195 For deliveries to pipes, files, and autoreplies, the duplicate checking
2196 still happens during the routing process, since they are not going to be
2197 routed further.
2198
cfe75fc3
PH
2199PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2200 It corrects a timeout issue with spamd. This is Ian's comment: "The
2201 background is that sometimes spamd either never reads data from a
2202 connection it has accepted, or it never writes response data. The exiscan
2203 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2204 blindly assumes that writes won't block so it may never time out."
2205
be22d70e
PH
2206PH/39 Allow G after quota size as well as K and M.
2207
0612b098
PH
2208PH/40 The value set for $authenticated_id in an authenticator may not contain
2209 binary zeroes or newlines because the value is written to log lines and
2210 to spool files. There was no check on this. Now the value is run through
2211 the string_printing() function so that such characters are converted to
2212 printable escape sequences.
2213
2e0c1448
PH
2214PH/41 $message_linecount is a new variable that contains the total number of
2215 lines in the message. Compare $body_linecount, which is the count for the
2216 body only.
2217
447d236c
PH
2218PH/42 Exim no longer gives details of delivery errors for specific addresses in
2219 bounce and delay warning messages, except in certain special cases, which
2220 are as follows:
2221
2222 (a) An SMTP error message from a remote host;
2223 (b) A message specified in a :fail: redirection;
2224 (c) A message specified in a "fail" command in a system filter;
2225 (d) A message specified in a FAIL return from the queryprogram router;
2226 (e) A message specified by the cannot_route_message router option.
2227
2228 In these cases only, Exim does include the error details in bounce and
2229 warning messages. There are also a few cases where bland messages such
2230 as "unrouteable address" or "local delivery error" are given.
2231
d20976dc
PH
2232PH/43 $value is now also set for the "else" part of a ${run expansion.
2233
f656d135
PH
2234PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2235 being worked on, but at least Exim now implements the latest version to
2236 play with."
2237
2e2a30b4
PH
2238PH/45 In a pipe transport, although a timeout while waiting for the pipe
2239 process to complete was treated as a delivery failure, a timeout while
2240 writing the message to the pipe was logged, but erroneously treated as a
2241 successful delivery. Such timeouts include transport filter timeouts. For
2242 consistency with the overall process timeout, these timeouts are now
2243 treated as errors, giving rise to delivery failures by default. However,
2244 there is now a new Boolean option for the pipe transport called
2245 timeout_defer, which, if set TRUE, converts the failures into defers for
2246 both kinds of timeout. A transport filter timeout is now identified in
2247 the log output.
2248
9176e9f0
PH
2249PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2250 systems where "make" and "gmake" are different, calling "gmake" at top
2251 level broke things. I've arranged for the value of $(MAKE) to be passed
2252 from the Makefile to this script so that it can call the same version of
2253 "make".
2254
7982096b 2255
bbe902f0
PH
2256A note about Exim versions 4.44 and 4.50
2257----------------------------------------
2258
2259Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2260changes of various kinds. As a consequence, a big documentation update was
2261needed. This delayed the release for rather longer than seemed good, especially
2262in the light of a couple of (minor) security issues. Therefore, the changes
2263that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2264release. So 4.44 and 4.50 are in effect two different branches that both start
2265from 4.43.
2266
2267I have left the 4.50 change log unchanged; it contains all the changes since
22684.43. The change log for 4.44 is below; many of its items are identical to
2269those for 4.50. This seems to be the most sensible way to preserve the
2270historical information.
2271
2272
f7b63901 2273Exim version 4.50
495ae4b0
PH
2274-----------------
2275
5fe762f6
PH
2276 1. Minor wording change to the doc/README.SIEVE file.
2277
139059f6 2278 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2279 computation of the current number of files was incorrect.
495ae4b0 2280
7086e875
PH
2281 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2282 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2283 place.
2284
35af9f61
PH
2285 4. Give more explanation in the error message when the command for a transport
2286 filter fails to execute.
2287
b668c215
PH
2288 5. There are several places where Exim runs a non-Exim command in a
2289 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2290 was being done only for the command run by the queryprogram router. It is
2291 now done for all such subprocesses. The other cases are: ${run, transport
2292 filters, and the commands run by the lmtp and pipe transports.
2293
a494b1e1
PH
2294 6. Added CONFIGURE_GROUP build-time option.
2295
2296 7. Some older OS have a limit of 256 on the maximum number of file
2297 descriptors. Exim was using setrlimit() to set 1000 as a large value
2298 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2299 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2300
c5fcb476
PH
2301 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2302 was an oversight, and furthermore, ever since the addition of extra
2303 controls (e.g. 4.43/32), the checks on when to allow different forms of
2304 "control" were broken. There should now be diagnostics for all cases when a
2305 control that does not make sense is encountered.
2306
69358f02
PH
2307 9. Added the /retain_sender option to "control=submission".
2308
5be20824
PH
230910. $recipients is now available in the predata ACL (oversight).
2310
eb2c0248
PH
231111. Tidy the search cache before the fork to do a delivery from a message
2312 received from the command line. Otherwise the child will trigger a lookup
2313 failure and thereby defer the delivery if it tries to use (for example) a
2314 cached ldap connection that the parent has called unbind on.
2315
2a3eea10
PH
231612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2317 of $address_data from the recipient verification was clobbered by the
2318 sender verification.
2319
232013. The value of address_data from a sender verification is now available in
2321 $sender_address_data in subsequent conditions in the ACL statement.
2322
23c7ff99
PH
232314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2324
4deaf07d
PH
232515. Added a new option "connect=<time>" to callout options, to set a different
2326 connection timeout.
2327
926e1192
PH
232816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2329 was its contents. (It was OK if the option was not defined at all.)
2330
650edc6f
PH
233117. A "Completed" log line is now written for messages that are removed from
2332 the spool by the -Mrm option.
2333
2c7db3f5
PH
233418. New variables $sender_verify_failure and $recipient_verify_failure contain
2335 information about exactly what failed.
2336
3d235903
PH
233719. Added -dd to debug only the daemon process.
2338
7c7ad977
PH
233920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2340 handles timeouts, both on the server side and network timeouts. Renamed the
2341 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2342
981756db
PH
234321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2344 It is now set to "smtps".
2345
d4eb88df
PH
234622. $host_address is now set to the target address during the checking of
2347 ignore_target_hosts.
2348
234923. When checking ignore_target_hosts for an ipliteral router, no host name was
2350 being passed; this would have caused $sender_host_name to have been used if
2351 matching the list had actually called for a host name (not very likely,
2352 since this list is usually IP addresses). A host name is now passed as
2353 "[x.x.x.x]".
2354
7d468ab8
PH
235524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2356 code that specifies a non-restarting handler (typically sigaction() in
2357 modern systems) in an attempt to fix a rare and obscure crash bug.
2358
235925. Narrowed the window for a race in the daemon that could cause it to ignore
2360 SIGCHLD signals. This is not a major problem, because they are used only to
2361 wake it up if nothing else does.
2362
62c0818f
PH
236326. A malformed maildirsize file could cause Exim to calculate negative values
2364 for the mailbox size or file count. Odd effects could occur as a result.
2365 The maildirsize information is now recalculated if the size or filecount
2366 end up negative.
2367
26034054
PH
236827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2369 support for a long time. Removed HAVE_SYS_VFS_H.
2370
af66f652
PH
237128. Installed the latest version of exipick from John Jetmore.
2372
90af77f4
PH
237329. In an address list, if the pattern was not a regular expression, an empty
2374 subject address (from a bounce message) matched only if the pattern was an
2375 empty string. Non-empty patterns were not even tested. This was the wrong
2376 because it is perfectly reasonable to use an empty address as part of a
2377 database query. An empty address is now tested by patterns that are
2378 lookups. However, all the other forms of pattern expect the subject to
2379 contain a local part and a domain, and therefore, for them, an empty
2380 address still always fails if the pattern is not itself empty.
2381
d8ef3577
PH
238230. Exim went into a mad DNS loop when attempting to do a callout where the
2383 host was specified on an smtp transport, and looking it up yielded more
2384 than one IP address.
2385
5cb8cbc6
PH
238631. Re-factored the code for checking spool and log partition space into a
2387 function that finds that data and another that does the check. The former
2388 is then used to implement four new variables: $spool_space, $log_space,
2389 $spool_inodes, and $log_inodes.
2390
14702f5b
PH
239132. The RFC2047 encoding function was originally intended for short strings
2392 such as real names; it was not keeping to the 75-character limit for
2393 encoded words that the RFC imposes. It now respects the limit, and
2394 generates multiple encoded words if necessary. To be on the safe side, I
2395 have increased the buffer size for the ${rfc2047: expansion operator from
2396 1024 to 2048 bytes.
2397
063b1e99
PH
239833. It is now permitted to omit both strings after an "if" condition; if the
2399 condition is true, the result is "true". As before, when the second string
2400 is omitted, a false condition yields an empty string. This makes it less
2401 cumbersome to write custom ACL and router conditions.
2402
652e1b65
PH
240334. Failure to deliver a bounce message always caused it to be frozen, even if
2404 there was an errors_to setting on the router. The errors_to setting is now
2405 respected.
2406
6f0c9a4f
PH
240735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2408 canonical form (fully expanded) before being placed in
2409 $sender_host_address.
2410
33397d19
PH
241136. The table in the code that translates DNS record types into text (T_A to
2412 "A" for instance) was missing entries for NS and CNAME. It is just possible
2413 that this could have caused confusion if both these types were looked up
2414 for the same domain, because the text type is used as part of Exim's
2415 per-process caching. But the chance of anyone hitting this buglet seems
2416 very small.
2417
7bb56e1f
PH
241837. The dnsdb lookup has been extended in a number of ways.
2419
2420 (1) There is a new type, "zns", which walks up the domain tree until it
2421 finds some nameserver records. It should be used with care.
2422
ea3bc19b
PH
2423 (2) There is a new type, "mxh", which is like "mx" except that it returns
2424 just the host names, not the priorities.
2425
2426 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2427 looked up. The behaviour when one of the lookups defers can be
2428 controlled by a keyword.
7bb56e1f 2429
ea3bc19b 2430 (4) It is now possible to specify the separator character for use when
7bb56e1f 2431 multiple records are returned.
33397d19 2432
0bcb2a0e
PH
243338. The dnslists ACL condition has been extended: it is now possible to supply
2434 a list of IP addresses and/or domains to be looked up in a particular DNS
2435 domain.
2436
2ac0e484
PH
243739. Added log_selector=+queue_time_overall.
2438
4e1fde53
PH
243940. When running the queue in the test harness, wait just a tad after forking a
2440 delivery process, to get repeatability of debugging output.
2441
de365ded
PH
244241. Include certificate and key file names in error message when GnuTLS fails
2443 to set them up, because the GnuTLS error message doesn't include the name
2444 of the failing file when there is a problem reading it.
2445
f05da2e8
PH
244642. Allow both -bf and -bF in the same test run.
2447
d6453af2
PH
244843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2449
f7b63901
PH
245044. The "Exiscan patch" is now merged into the mainline Exim source.
2451
245245. Sometimes the final signoff response after QUIT could fail to get
2453 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2454 < 0 before doing a fflush(). This bug looks as though it goes back to the
2455 introduction of TLS in release 3.20, but "sometimes" must have been rare
2456 because the tests only now provoked it.
2457
a444213a
PH
245846. Reset the locale to "C" after calling embedded Perl, in case it was changed
2459 (this can affect the format of dates).
2460
0ec020ea
PH
246147. exim_tidydb, when checking for the continued existence of a message for
2462 which it has found a message-specific retry record, was not finding
2463 messages that were in split spool directories. Consequently, it was
2464 deleting retry records that should have stayed in existence.
2465
b1206957
PH
246648. Steve fixed some bugs in eximstats.
2467
246849. The SPA authentication driver was not abandoning authentication and moving
2469 on to the next authenticator when an expansion was forced to fail,
2470 contradicting the general specification for all authenticators. Instead it
2471 was generating a temporary error. It now behaves as specified.
2472
26dd5a95
PH
247350. The default ordering of permitted cipher suites for GnuTLS was pessimal
2474 (the order specifies the preference for clients). The order is now AES256,
2475 AES128, 3DES, ARCFOUR128.
2476
343b2385
PH
247751. Small patch to Sieve code - explicitly set From: when generating an
2478 autoreply.
2479
1c5466b9
PH
248052. Exim crashed if a remote delivery caused a very long error message to be
2481 recorded - for instance if somebody sent an entire SpamAssassin report back
2482 as a large number of 550 error lines. This bug was coincidentally fixed by
2483 increasing the size of one of Exim's internal buffers (big_buffer) that
2484 happened as part of the Exiscan merge. However, to be on the safe side, I
2485 have made the code more robust (and fixed the comments that describe what
2486 is going on).
2487
55ee9ee3
PH
248853. Now that there can be additional text after "Completed" in log lines (if
2489 the queue_time_overall log selector is set), a one-byte patch to exigrep
2490 was needed to allow it to recognize "Completed" as not the last thing in
2491 the line.
2492
d38f8232
PH
249354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2494 patch that reportedly fixes this has been added. I am not expert enough to
2495 create a test for it. This is what the patch creator wrote:
2496
2497 "I found a little strange behaviour of ldap code when working with
2498 Windows 2003 AD Domain, where users was placed in more than one
2499 Organization Units. When I tried to give exim partial DN, the exit code
2500 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2501 But simultaneously result of request was absolutely normal ldap result,
2502 so I produce this patch..."
2503
3295e65b
PH
2504 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2505 REFERENCE, so I have modified the code to exclude the patch when that macro
2506 is not defined.
2507
7102e136
PH
250855. Some experimental protocols are using DNS PTR records for new purposes. The
2509 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2510 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2511 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2512 CAN-2005-0021
7102e136 2513
3ca0ba97
PH
251456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2515
c2bcbe20
PH
251657. Double the size of the debug message buffer (to 2048) so that more of very
2517 long debug lines gets shown.
2518
18ce445d
PH
251958. The exicyclog utility now does better if the number of log files to keep
2520 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2521
1f5b4c3d
PH
252259. Two changes related to the smtp_active_hostname option:
2523
2524 (1) $smtp_active_hostname is now available as a variable.
2525 (2) The default for smtp_banner uses $smtp_active_hostname instead
2526 of $primary_hostname.
2527
b975ba52
PH
252860. The host_aton() function is supposed to be passed a string that is known
2529 to be a valid IP address. However, in the case of IPv6 addresses, it was
2530 not checking this. This is a hostage to fortune. Exim now panics and dies
2531 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2532 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2533 components; fortuitously, this particular loophole had already been fixed
2534 by change 4.50/55 above.
2535
2536 If there are any other similar loopholes, the new check in host_aton()
2537 itself should stop them being exploited. The report I received stated that
2538 data on the command line could provoke the exploit when Exim was running as
2539 exim, but did not say which command line option was involved. All I could
2540 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2541 running as the user.
ea3a6f44 2542 CAN-2005-0021
85b87bc2
PH
2543
254461. There was a buffer overflow vulnerability in the SPA authentication code
2545 (which came originally from the Samba project). I have added a test to the
2546 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2547 CAN-2005-0022
b975ba52 2548
17ffcae7
PH
254962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2550 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2551
d95f9fdb
PH
255263. The daemon start-up calls getloadavg() while still root for those OS that
2553 need the first call to be done as root, but it missed one case: when
2554 deliver_queue_load_max is set with deliver_drop_privilege. This is
2555 necessary for the benefit of the queue runner, because there is no re-exec
2556 when deliver_drop_privilege is set.
2557
86b8287f
PH
255864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2559 This has been fixed.
2560
60dc5e56
PH
256165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2562 was in use, was not putting the data itself into the right store pool;
2563 consequently, it could be overwritten for a subsequent message in the same
2564 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2565 the caching.)
2566
533244af
PH
256766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2568
a5a28604
PH
256967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2570 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2571 the function were treating the return as a boolean value, which happened to
2572 work because 0=false and not-0=true, but is not correct code.
2573
7e634d24
PH
257468. The host_aton() function was not handling scoped IPv6 addresses (those
2575 with, for example, "%eth0" on the end) correctly.
2576
3e11c26b
PH
257769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2578 negated items (that is, ~something) in unsigned ints. Some compilers
2579 apparently mutter when there is no cast.
2580
6729cf78
PH
258170. If an address verification called from an ACL failed, and did not produce a
2582 user-specific message (i.e. there was only a "system" message), nothing was
2583 put in $acl_verify_message. In this situation, it now puts the system
2584 message there.
2585
00f00ca5
PH
258671. Change 4.23/11 added synchronization checking at the start of an SMTP
2587 session; change 4.31/43 added the unwanted input to the log line - except
2588 that it did not do this in the start of session case. It now does.
2589
c9bdd01c
PH
259072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2591 This is wrong and can cause the other end to generate a synchronization
2592 error if it is another Exim or anything else that does the synchronization
2593 check. A QUIT command is no longer sent after a timeout.
2594
d43194df
PH
259573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2596 during host lookups.
2597
fe5b5d0b
PH
259874. The defer_ok option of callout verification was not working if it was used
2599 when verifying addresses in header lines, that is, for this case:
2600
2601 verify = header_sender/callout=defer_ok
2602
76a2d7ba
PH
260375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2604 those file descriptors could be used for SMTP connections. If anything
2605 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2606 could be sent to the SMTP client, causing chaos. The daemon now opens
2607 stdin, stdout, and stderr to /dev/null when it puts itself into the
2608 background.
2609
261076. Arrange for output from Perl's "warn" command to be written to Exim's main
2611 log by default. The user can override this with suitable Perl magic.
2612
04f7d5b9
PH
261377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2614 the log message when discard triggers, was not working for the DATA ACL or
2615 for the non-SMTP ACL.
2616
bc60667e
PH
261778. Error message wording change in sieve.c.
2618
bb6e88ff
PH
261979. If smtp_accept_max_per_host was set, the number of connections could be
2620 restricted to fewer than expected, because the daemon was trying to set up
2621 a new connection before checking whether the processes handling previous
2622 connections had finished. The check for completed processes is now done
2623 earlier. On busy systems, this bug wouldn't be noticed because something
2624 else would have woken the daemon, and it would have reaped the completed
2625 process earlier.
2626
1e70f85b
PH
262780. If a message was submitted locally by a user whose login name contained one
2628 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2629 It caused a spool format error. I have fixed the spool reading code. A
2630 related problem was that the "from" clause in the Received: line became
2631 illegal because of the space(s). It is now covered by ${quote_local_part.
2632
263381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2634 tables).
2635
4e01f9d6
PH
263682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2637
1ee1cef2
PH
263883. Patch from Sieve maintainer to fix unterminated string problem in
2639 "vacation" handling.
2640
6e2b4ccc
PH
264184. Some minor changes to the Linux configuration files to help with other
2642 OS variants using glibc.
2643
8e669ac1
PH
264485. One more patch for Sieve to update vacation handling to latest spec.
2645
495ae4b0 2646
bbe902f0
PH
2647----------------------------------------------------
2648See the note above about the 4.44 and 4.50 releases.
2649----------------------------------------------------
2650
2651
2652Exim version 4.44
2653-----------------
2654
2655 1. Change 4.43/35 introduced a bug that caused file counts to be
2656 incorrectly computed when quota_filecount was set in an appendfile
2657 transport
2658
2659 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2660 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2661 place.
2662
2663 3. Give more explanation in the error message when the command for a transport
2664 filter fails to execute.
2665
2666 4. There are several places where Exim runs a non-Exim command in a
2667 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2668 was being done only for the command run by the queryprogram router. It is
2669 now done for all such subprocesses. The other cases are: ${run, transport
2670 filters, and the commands run by the lmtp and pipe transports.
2671
2672 5. Some older OS have a limit of 256 on the maximum number of file
2673 descriptors. Exim was using setrlimit() to set 1000 as a large value
2674 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2675 systems. I've change it so that if it can't get 1000, it tries for 256.
2676
2677 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2678 was an oversight, and furthermore, ever since the addition of extra
2679 controls (e.g. 4.43/32), the checks on when to allow different forms of
2680 "control" were broken. There should now be diagnostics for all cases when a
2681 control that does not make sense is encountered.
2682
2683 7. $recipients is now available in the predata ACL (oversight).
2684
2685 8. Tidy the search cache before the fork to do a delivery from a message
2686 received from the command line. Otherwise the child will trigger a lookup
2687 failure and thereby defer the delivery if it tries to use (for example) a
2688 cached ldap connection that the parent has called unbind on.
2689
2690 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2691 of $address_data from the recipient verification was clobbered by the
2692 sender verification.
2693
269410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2695 was its contents. (It was OK if the option was not defined at all.)
2696
269711. A "Completed" log line is now written for messages that are removed from
2698 the spool by the -Mrm option.
2699
270012. $host_address is now set to the target address during the checking of
2701 ignore_target_hosts.
2702
270313. When checking ignore_target_hosts for an ipliteral router, no host name was
2704 being passed; this would have caused $sender_host_name to have been used if
2705 matching the list had actually called for a host name (not very likely,
2706 since this list is usually IP addresses). A host name is now passed as
2707 "[x.x.x.x]".
2708
270914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2710 code that specifies a non-restarting handler (typically sigaction() in
2711 modern systems) in an attempt to fix a rare and obscure crash bug.
2712
271315. Narrowed the window for a race in the daemon that could cause it to ignore
2714 SIGCHLD signals. This is not a major problem, because they are used only to
2715 wake it up if nothing else does.
2716
271716. A malformed maildirsize file could cause Exim to calculate negative values
2718 for the mailbox size or file count. Odd effects could occur as a result.
2719 The maildirsize information is now recalculated if the size or filecount
2720 end up negative.
2721
272217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2723 support for a long time. Removed HAVE_SYS_VFS_H.
2724
ea3a6f44 272518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2726
272719. Allow an empty sender to be matched against a lookup in an address list.
2728 Previously the only cases considered were a regular expression, or an
2729 empty pattern.
2730
273120. Exim went into a mad DNS lookup loop when doing a callout where the
2732 host was specified on the transport, if the DNS lookup yielded more than
2733 one IP address.
2734
ea3a6f44
NM
273521. The RFC2047 encoding function was originally intended for short strings
2736 such as real names; it was not keeping to the 75-character limit for
2737 encoded words that the RFC imposes. It now respects the limit, and
2738 generates multiple encoded words if necessary. To be on the safe side, I
2739 have increased the buffer size for the ${rfc2047: expansion operator from
2740 1024 to 2048 bytes.
bbe902f0 2741
ea3a6f44
NM
274222. Failure to deliver a bounce message always caused it to be frozen, even if
2743 there was an errors_to setting on the router. The errors_to setting is now
2744 respected.
bbe902f0
PH
2745
274623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2747 canonical form (fully expanded) before being placed in
2748 $sender_host_address.
2749
275024. Updated eximstats to version 1.33
2751
ea3a6f44
NM
275225. Include certificate and key file names in error message when GnuTLS fails
2753 to set them up, because the GnuTLS error message doesn't include the name
2754 of the failing file when there is a problem reading it.
bbe902f0
PH
2755
275626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2757 As per change 25.
bbe902f0 2758
ea3a6f44
NM
275927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2760 (this can affect the format of dates).
bbe902f0 2761
ea3a6f44
NM
276228. exim_tidydb, when checking for the continued existence of a message for
2763 which it has found a message-specific retry record, was not finding
2764 messages that were in split spool directories. Consequently, it was
2765 deleting retry records that should have stayed in existence.
bbe902f0
PH
2766
276729. eximstats updated to version 1.35
2768 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2769 1.35 - bugfix such that pie charts by volume are generated correctly
2770
ea3a6f44
NM
277130. The SPA authentication driver was not abandoning authentication and moving
2772 on to the next authenticator when an expansion was forced to fail,
2773 contradicting the general specification for all authenticators. Instead it
2774 was generating a temporary error. It now behaves as specified.
bbe902f0 2775
ea3a6f44
NM
277631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2777 (the order specifies the preference for clients). The order is now AES256,
2778 AES128, 3DES, ARCFOUR128.
bbe902f0 2779
ea3a6f44
NM
278031. Small patch to Sieve code - explicitly set From: when generating an
2781 autoreply.
bbe902f0 2782
ea3a6f44
NM
278332. Exim crashed if a remote delivery caused a very long error message to be
2784 recorded - for instance if somebody sent an entire SpamAssassin report back
2785 as a large number of 550 error lines. This bug was coincidentally fixed by
2786 increasing the size of one of Exim's internal buffers (big_buffer) that
2787 happened as part of the Exiscan merge. However, to be on the safe side, I
2788 have made the code more robust (and fixed the comments that describe what
2789 is going on).
bbe902f0 2790
ea3a6f44
NM
279133. Some experimental protocols are using DNS PTR records for new purposes. The
2792 keys for these records are domain names, not reversed IP addresses. The
2793 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2794 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2795 CAN-2005-0021
2796
ea3a6f44
NM
279734. The host_aton() function is supposed to be passed a string that is known
2798 to be a valid IP address. However, in the case of IPv6 addresses, it was
2799 not checking this. This is a hostage to fortune. Exim now panics and dies
2800 if the condition is not met. A case was found where this could be provoked
2801 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2802 components; fortuitously, this particular loophole had already been fixed
2803 by change 4.50/55 or 4.44/33 above.
2804
2805 If there are any other similar loopholes, the new check in host_aton()
2806 itself should stop them being exploited. The report I received stated that
2807 data on the command line could provoke the exploit when Exim was running as
2808 exim, but did not say which command line option was involved. All I could
2809 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2810 running as the user.
bbe902f0
PH
2811 CAN-2005-0021
2812
ea3a6f44
NM
281335. There was a buffer overflow vulnerability in the SPA authentication code
2814 (which came originally from the Samba project). I have added a test to the
2815 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2816 CAN-2005-0022
2817
ea3a6f44
NM
281836. The daemon start-up calls getloadavg() while still root for those OS that
2819 need the first call to be done as root, but it missed one case: when
2820 deliver_queue_load_max is set with deliver_drop_privilege. This is
2821 necessary for the benefit of the queue runner, because there is no re-exec
2822 when deliver_drop_privilege is set.
bbe902f0 2823
ea3a6f44
NM
282437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2825 was in use, was not putting the data itself into the right store pool;
2826 consequently, it could be overwritten for a subsequent message in the same
2827 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2828 the caching.)
bbe902f0 2829
ea3a6f44
NM
283038. Sometimes the final signoff response after QUIT could fail to get
2831 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2832 < 0 before doing a fflush(). This bug looks as though it goes back to the
2833 introduction of TLS in release 3.20, but "sometimes" must have been rare
2834 because the tests only now provoked it.
bbe902f0
PH
2835
2836
495ae4b0
PH
2837Exim version 4.43
2838-----------------
2839
2840 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2841 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2842 Now it returns an integer. A number of calls were still expecting a T/F
2843 return. Fortuitously, in all cases, the tests worked in OK situations,
2844 which is the norm. However, things would have gone wrong on any write
2845 failures on the smtp file descriptor. This function is used when sending
2846 messages over SMTP and also when doing verify callouts.
2847
2848 2. When Exim is called to do synchronous delivery of a locally submitted
2849 message (the -odf or -odi options), it no longer closes stderr before doing
2850 the delivery.
2851
2852 3. Implemented the mua_wrapper option.
2853
2854 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2855
2856 5. Implemented the functions header_remove(), header_testname(),
2857 header_add_at_position(), and receive_remove_recipient(), and exported them
2858 to local_scan().
2859
2860 6. If an ACL "warn" statement specified the addition of headers, Exim already
2861 inserted X-ACL-Warn: at the start if there was no header name. However, it
2862 was not making this test for the second and subsequent header lines if
2863 there were newlines in the string. This meant that an invalid header could
2864 be inserted if Exim was badly configured.
2865
2866 7. Allow an ACL "warn" statement to add header lines at the start or after all
2867 the Received: headers, as well as at the end.
2868
2869 8. Added the rcpt_4xx retry error code.
2870
2871 9. Added postmaster_mailfrom=xxx to callout verification option.
2872
287310. Added mailfrom=xxxx to the callout verification option, for verify=
2874 header_sender only.
2875
287611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2877 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2878
287912. Inserted some casts to stop certain compilers warning when using pointer
2880 differences as field lengths or precisions in printf-type calls (mostly
2881 affecting debugging statements).
2882
288313. Added optional readline() support for -be (dynamically loaded).
2884
288514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2886 same clock tick as a message's arrival, so that its received time was the
2887 same as the "first fail" time on the retry record, and that message
2888 remained on the queue past the ultimate address timeout, every queue runner
2889 would try a delivery (because it was past the ultimate address timeout) but
2890 after another failure, the ultimate address timeout, which should have then
2891 bounced the address, did not kick in. This was a "< instead of <=" error;
2892 in most cases the first failure would have been in the next clock tick
2893 after the received time, and all would be well.
2894
289515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2896 being recognized when the domain list was tested by the match_domain
2897 condition in an expansion string.
2898
289916. Added the ${str2b64: operator.
2900
290117. Exim was always calling setrlimit() to set a large limit for the number of
2902 processes, without checking whether the existing limit was already
2903 adequate. (It did check for the limit on file descriptors.) Furthermore,
2904 errors from getrlimit() and setrlimit() were being ignored. Now they are
2905 logged to the main and panic logs, but Exim does carry on, to try to do its
2906 job under whatever limits there are.
2907
290818. Imported PCRE 5.0.
2909
291019. Trivial typo in log message " temporarily refused connection" (the leading
2911 space).
2912
291320. If the log selector return_path_on_delivery was set and an address was
2914 redirected to /dev/null, the delivery process crashed because it assumed
2915 that a return path would always be set for a "successful" delivery. In this
2916 case, the whole delivery is bypassed as an optimization, and therefore no
2917 return path is set.
2918
291921. Internal re-arrangement: the function for sending a challenge and reading
2920 a response while authentication was assuming a zero-terminated challenge
2921 string. It's now changed to take a pointer and a length, to allow for
2922 binary data in such strings.
2923
292422. Added the cyrus_sasl authenticator (code supplied by MBM).
2925
292623. Exim was not respecting finduser_retries when seeking the login of the
2927 uid under which it was called; it was always trying 10 times. (The default
2928 setting of finduser_retries is zero.) Also, it was sleeping after the final
2929 failure, which is pointless.
2930
293124. Implemented tls_on_connect_ports.
2932
293325. Implemented acl_smtp_predata.
2934
293526. If the domain in control=submission is set empty, Exim assumes that the
2936 authenticated id is a complete email address when it generates From: or
2937 Sender: header lines.
2938
293927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2940 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2941 chown and chgrp in /bin and hostname in /usr/bin.
2942
294328. Exim was keeping the "process log" file open after each use, just as it
2944 does for the main log. This opens the possibility of it remaining open for
2945 long periods when the USR1 signal hits a daemon. Occasional processlog
2946 errors were reported, that could have been caused by this. Anyway, it seems
2947 much more sensible not to leave this file open at all, so that is what now
2948 happens.
2949
295029. The long-running daemon process does not normally write to the log once it
2951 has entered its main loop, and it closes the log before doing so. This is
2952 so that log files can straightforwardly be renamed and moved. However,
2953 there are a couple of unusual error situations where the daemon does write
2954 log entries, and I had neglected to close the log afterwards.
2955
295630. The text of an SMTP error response that was received during a remote
2957 delivery was being truncated at 512 bytes. This is too short for some of
2958 the long messages that one sometimes sees. I've increased the limit to
2959 1024.
2960
296131. It is now possible to make retry rules that apply only when a message has a
2962 specific sender, in particular, an empty sender.
2963
296432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2965 it possible to be selective about when SMTP synchronization is enforced.
2966
296733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2968
296932. Implemented hosts_connection_nolog.
2970
297133. Added an ACL for QUIT.
2972
297334. Setting "delay_warning=" to disable warnings was not working; it gave a
2974 syntax error.
2975
297635. Added mailbox_size and mailbox_filecount to appendfile.
2977
297836. Added control = no_multiline_responses to ACLs.
2979
298037. There was a bug in the logic of the code that waits for the clock to tick
2981 in the case where the clock went backwards by a substantial amount such
2982 that the microsecond fraction of "now" was more than the microsecond
2983 fraction of "then" (but the whole seconds number was less).
2984
298538. Added support for the libradius Radius client library this is found on
2986 FreeBSD (previously only the radiusclient library was supported).
2987
2988
2989Exim version 4.42
2990-----------------
2991
2992 1. When certain lookups returned multiple values in the form name=value, the
2993 quoting of the values was not always being done properly. Specifically:
2994 (a) If the value started with a double quote, but contained no whitespace,
2995 it was not quoted.
2996 (b) If the value contained whitespace other than a space character (i.e.
2997 tabs or newlines or carriage returns) it was not quoted.
2998 This fix has been applied to the mysql and pgsql lookups by writing a
2999 separate quoting function and calling it from the lookup code. The fix
3000 should probably also be applied to nisplus, ibase and oracle lookups, but
3001 since I cannot test any of those, I have not disturbed their existing code.
3002
3003 2. A hit in the callout cache for a specific address caused a log line with no
3004 reason for rejecting RCPT. Now it says "Previous (cached) callout
3005 verification failure".
3006
3007 3. There was an off-by-one bug in the queryprogram router. An over-long
3008 return line was truncated at 256 instead of 255 characters, thereby
3009 overflowing its buffer with the terminating zero. As well as fixing this, I
3010 have increased the buffer size to 1024 (and made a note to document this).
3011
3012 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
3013 when Exim is waiting for an SMTP response from a remote server, Exim
3014 restarts its select() call on the socket, thereby resetting its timeout.
3015 This is not a problem when such interrupts are rare. Somebody set up a cron
3016 job to run exiwhat every 2 minutes, which is less than the normal select()
3017 timeout (5 or 10 minutes). This meant that the select() timeout never
3018 kicked in because it was always reset. I have fixed this by comparing the
3019 time when an interrupt arrives with the time at the start of the first call
3020 to select(). If more time than the timeout has elapsed, the interrupt is
3021 treated as a timeout.
3022
3023 5. Some internal re-factoring in preparation for the addition of Sieve
3024 extensions (by MH). In particular, the "personal" test is moved to a
3025 separate function, and given an option for scanning Cc: and Bcc: (which is
3026 not set for Exim filters).
3027
3028 6. When Exim created an email address using the login of the caller as the
3029 local part (e.g. when creating a From: or Sender: header line), it was not
3030 quoting the local part when it contained special characters such as @.
3031
3032 7. Installed new OpenBSD configuration files.
3033
3034 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3035 try to make them clearer.
3036
3037 9. Callout options, other than the timeout value, were being ignored when
3038 verifying sender addresses in header lines. For example, when using
3039
3040 verify = header_sender/callout=no_cache
3041
3042 the cache was (incorrectly) being used.
3043
304410. Added a missing instance of ${EXE} to the exim_install script; this affects
3045 only the Cygwin environment.
3046
304711. When return_path_on_delivery was set as a log selector, if different remote
3048 addresses in the same message used different return paths and parallel
3049 remote delivery occurred, the wrong values would sometimes be logged.
3050 (Whenever a remote delivery process finished, the return path value from
3051 the most recently started remote delivery process was logged.)
3052
305312. RFC 3848 specifies standard names for the "with" phrase in Received: header
3054 lines when AUTH and/or TLS are in use. This is the "received protocol"
3055 field. Exim used to use "asmtp" for authenticated SMTP, without any
3056 indication (in the protocol name) for TLS use. Now it follows the RFC and
3057 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3058 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3059 names appear in log lines as well as in Received: header lines.
3060
306113. Installed MH's patches for Sieve to add the "copy" and "vacation"
3062 extensions, and comparison tests, and to fix some bugs.
3063
306414. Changes to the "personal" filter test:
3065
3066 (1) The test was buggy in that it was just doing the equivalent of
3067 "contains" tests on header lines. For example, if a user's address was
3068 anne@some.where, the "personal" test would incorrectly be true for
3069
3070 To: susanne@some.where
3071
3072 This test is now done by extracting each address from the header in turn,
3073 and checking the entire address. Other tests that are part of "personal"
3074 are now done using regular expressions (for example, to check local parts
3075 of addresses in From: header lines).
3076
3077 (2) The list of non-personal local parts in From: addresses has been
3078 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3079 taken from the Sieve specification recommendations.
3080
3081 (3) If the message contains any header line starting with "List-" it is
3082 treated as non-personal.
3083
3084 (4) The test for "circular" in the Subject: header line has been removed
3085 because it now seems ill-conceived.
3086
308715. Minor typos in src/EDITME comments corrected.
3088
308916. Installed latest exipick from John Jetmore.
3090
309117. If headers_add on a router specified a text string that was too long for
3092 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3093 of string_sprintf() is now avoided.
3094
309518. $message_body_size was not set (it was always zero) when running the DATA
3096 ACL and the local_scan() function.
3097
309819. For the "mail" command in an Exim filter, no default was being set for
3099 the once_repeat time, causing a random time value to be used if "once" was
3100 specified. (If the value happened to be <= 0, no repeat happened.) The
3101 default is now 0s, meaning "never repeat". The "vacation" command was OK
3102 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3103 (I found it when inspecting the code).
3104
310520. There is now an overall timeout for performing a callout verification. It
3106 defaults to 4 times the callout timeout, which applies to individual SMTP
3107 commands during the callout. The overall timeout applies when there is more
3108 than one host that can be tried. The timeout is checked before trying the
3109 next host. This prevents very long delays if there are a large number of
3110 hosts and all are timing out (e.g. when the network connections are timing
3111 out). The value of the overall timeout can be changed by specifying an
3112 additional sub-option for "callout", called "maxwait". For example:
3113
3114 verify = sender/callout=5s,maxwait=20s
3115
311621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3117 to the end before writing, but this should make it even safer).
3118
311922. Exim was forgetting that it had advertised PIPELINING for the second and
3120 subsequent messages on an SMTP connection. It was also not resetting its
3121 memory on STARTTLS and an internal HELO.
3122
312323. When Exim logs an SMTP synchronization error within a session, it now
3124 records whether PIPELINING has been advertised or not.
3125
312624. Added 3 instances of "(long int)" casts to time_t variables that were being
3127 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3128 rather than long int.
3129
313025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3131
313226. Added the never_mail option to autoreply.
3133
3134
3135Exim version 4.41
3136-----------------
3137
3138 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3139 crash if the getsockname() call failed; this can happen if a connection is
3140 closed very soon after it is established. The problem was simply in the
3141 order in which certain operations were done, causing Exim to try to write
3142 to the SMTP stream before it had set up the file descriptor. The bug has
3143 been fixed by making things happen in the correct order.
3144
3145
3146Exim version 4.40
3147-----------------
3148
3149 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3150 before the connection was closed, thus losing the rejection response.
3151
3152 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3153 some early Solaris releases, but causes trouble in current releases where
3154 socklen_t is defined.
3155
3156 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3157 always exist.
3158
3159 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3160 configured.
3161
3162 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3163 that releasing the top of it at the end releases what was used for sub-
3164 expansions (unless the block got too big). However, discard this block if
3165 the first thing is a variable or header, so that we can use its block when
3166 it is dynamic (useful for very large $message_headers, for example).
3167
3168 6. Lookups now cache *every* query, not just the most recent. A new, separate
3169 store pool is used for this. It can be recovered when all lookup caches are
3170 flushed. Lookups now release memory at the end of their result strings.
3171 This has involved some general refactoring of the lookup sources.
3172
3173 7. Some code has been added to the store_xxx() functions to reduce the amount
3174 of flapping under certain conditions.
3175
3176 8. log_incoming_interface used to affect only the <= reception log lines. Now
3177 it causes the local interface and port to be added to several more SMTP log
3178 lines, for example "SMTP connection from", and rejection lines.
3179
3180 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3181
318210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3183
318411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3185 could be overwritten at the end of the current message (or the start of a
3186 new message if it was set in a HELO ACL). The value is now preserved for
3187 the duration of the SMTP connection.
3188
318912. If a transport had a headers_rewrite setting, and a matching header line
3190 contained an unqualified address, that address was qualified, even if it
3191 did not match any rewriting rules. The underlying bug was that the values
3192 of the flags that permit the existence of unqualified sender and recipient
3193 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3194 non-local messages, and by -bnq for local messages) were not being
3195 preserved with the message after it was received.
3196
319713. When Exim was logging an SMTP synchronization error, it could sometimes log
3198 "next input=" as part of the text comprising the host identity instead of
3199 the correct text. The code was using the same buffer for two different
3200 strings. However, depending on which order the printing function evaluated
3201 its arguments, the bug did not always show up. Under Linux, for example, my
3202 test suite worked just fine.
3203
320414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3205 doesn't work with some older versions of Perl. It has been changed to "my",
3206 which in any case is probably the better facility to use.
3207
320815. A really picky compiler found some instances of statements for creating
3209 error messages that either had too many or two few arguments for the format
3210 string.
3211
321216. The size of the buffer for calls to the DNS resolver has been increased
3213 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3214 for addresses that have a lot of PTR records. This alleviates a problem; it
3215 does not fully solve it.
3216
321717. A dnsdb lookup for PTR records that receives more data than will fit in the
3218 buffer now truncates the list and logs the incident, which is the same
3219 action as happens when Exim is looking up a host name and its aliases.
3220 Previously in this situation something unpredictable would happen;
3221 sometimes it was "internal error: store_reset failed".
3222
322318. If a server dropped the connection unexpectedly when an Exim client was
3224 using GnuTLS and trying to read a response, the client delivery process
3225 crashed while trying to generate an error log message.
3226
322719. If a "warn" verb in an ACL added multiple headers to a message in a single
3228 string, for example:
3229
3230 warn message = H1: something\nH2: something
3231
3232 the text was added as a single header line from Exim's point of view
3233 though it ended up OK in the delivered message. However, searching for the
3234 second and subsequent header lines using $h_h2: did not work. This has been
3235 fixed. Similarly, if a system filter added multiple headers in this way,
3236 the routers could not see them.
3237
323820. Expanded the error message when iplsearch is called with an invalid key to
3239 suggest using net-iplsearch in a host list.
3240
324121. When running tests using -bh, any delays imposed by "delay" modifiers in
3242 ACLs are no longer actually imposed (and a message to that effect is
3243 output).
3244
324522. If a "gecos" field in a passwd entry contained escaped characters, in
3246 particular, if it contained a \" sequence, Exim got it wrong when building
3247 a From: or a Sender: header from that name. A second bug also caused
3248 incorrect handling when an unquoted " was present following a character
3249 that needed quoting.
3250
325123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3252 was not being matched caselessly.
3253
325424. Arranged for all hyphens in the exim.8 source to be escaped with
3255 backslashes.
3256
325725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3258 properly. Recipient callout cache records were still being keyed to include
3259 the sender, even when use_sender was set false. This led to far more
3260 callouts that were necessary. The sender is no longer included in the key
3261 when use_sender is false.
3262
326326. Added "control = submission" modifier to ACLs.
3264
326527. Added the ${base62d: operator to decode base 62 numbers.
3266
326728. dnsdb lookups can now access SRV records.
3268
326929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3270 the configuration file.
3271
327230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3273 (-v) mode. This makes the output for a verbose queue run more intelligible.
3274
327531. Added a use_postmaster feature to recipient callouts.
3276
327732. Added the $body_zerocount variable, containing the number of binary zero
3278 bytes in the message body.
3279
328033. The time of last modification of the "new" subdirectory is now used as the
3281 "mailbox time last read" when there is a quota error for a maildir
3282 delivery.
3283
328434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3285
328635. Added +ignore_unknown as a special item in host lists.
3287
328836. Code for decoding IPv6 addresses in host lists is now included, even if
3289 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3290 address was recognized as an IP address, but was then not correctly decoded
3291 into binary, causing unexpected and incorrect effects when compared with
3292 another IP address.
3293
3294
3295Exim version 4.34
3296-----------------
3297
3298 1. Very minor rewording of debugging text in manualroute to say "list of
3299 hosts" instead of "hostlist".
3300
3301 2. If verify=header_syntax was set, and a header line with an unqualified
3302 address (no domain) and a large number of spaces between the end of the
3303 name and the colon was received, the reception process suffered a buffer
3304 overflow, and (when I tested it) crashed. This was caused by some obsolete
3305 code that should have been removed. The fix is to remove it!
3306
3307 3. When running in the test harness, delay a bit after writing a bounce
3308 message to get a bit more predictability in the log output.
3309
3310 4. Added a call to search_tidyup() just before forking a reception process. In
3311 theory, someone could use a lookup in the expansion of smtp_accept_max_
3312 per_host which, without the tidyup, could leave open a database connection.
3313
3314 5. Added the variables $recipient_data and $sender_data which get set from a
3315 lookup success in an ACL "recipients" or "senders" condition, or a router
3316 "senders" option, similar to $domain_data and $local_part_data.
3317
3318 6. Moved the writing of debug_print from before to after the "senders" test
3319 for routers.
3320
3321 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3322 problems for message scanning, either using a data ACL, or using
3323 local_scan() because the Received: header was not generated till after they
3324 were called (in order to set the time as the time of reception completion).
3325 I have revised the way this works. The header is now generated after the
3326 body is received, but before the ACL or local_scan() are called. After they
3327 are run, the timestamp in the header is updated.
3328
3329
3330Exim version 4.33
3331-----------------
3332
3333 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3334 before starting a queue runner without re-exec. This happened only when
3335 deliver_drop_privilege was set or when the Exim user was set to root. The
3336 effect of the bug was that timeouts during subsequent deliveries caused
3337 crashes instead of being properly handled. The handler is now left at its
3338 default (and expected) setting.
3339
3340 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3341 message, again when deliver_drop_privilege is set or Exim is run as root.
3342 The bug described in (1) was not present in this case, but the tidying up
3343 of the other signals was missing. I have made the two cases consistent.
3344
3345 3. The ignore_target_hosts setting on a manualroute router was being ignored
3346 for hosts that were looked up using the /MX notation.
3347
3348 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3349 in domain lists.
3350
3351 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3352 operated on the sender address. After changing the $sender_address to <>
3353 for the sender address verify, Exim was re-instated it as the original
3354 (before rewriting) address, but remembering that it had rewritten it, so it
3355 wasn't rewriting it again. This bug also had the effect of breaking the
3356 sender address verification caching when the sender address was rewritten.
3357
3358 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3359 This has been changed so that if the ip literal address matches
3360 ignore_target_hosts, the router declines.
3361
3362 7. Added expansion conditions match_domain, match_address, and match_local_
3363 part (NOT match_host).
3364
3365 8. The placeholder for the Received: header didn't have a length field set.
3366
3367 9. Added code to Exim itself and to exim_lock to test for a specific race
3368 condition that could lead to file corruption when using MBX delivery. The
3369 issue is with the lockfile that is created in /tmp. If this file is removed
3370 after a process has opened it but before that process has acquired a lock,
3371 there is the potential for a second process to recreate the file and also
3372 acquire a lock. This could lead to two Exim processes writing to the file
3373 at the same time. The added code performs the same test as UW imapd; it
3374 checks after acquiring the lock that its file descriptor still refers to
3375 the same named file.
3376
337710. The buffer for building added header lines was of fixed size, 8192 bytes.
3378 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3379 when Exim is built.
3380
338111. Added the smtp_active_hostname option. If used, this will typically be made
3382 to depend on the incoming interface address. Because $interface_address is
3383 not set up until the daemon has forked a reception process, error responses
3384 that can happen earlier (such as "too many connections") no longer contain
3385 a host name.
3386
338712. If an expansion in a condition on a "warn" statement fails because a lookup
3388 defers, the "warn" statement is abandoned, and the next ACL statement is
3389 processed. Previously this caused the whole ACL to be aborted.
3390
339113. Added the iplsearch lookup type.
3392
339314. Added ident_timeout as a log selector.
3394
339515. Added tls_certificate_verified as a log selector.
3396
339716. Added a global option tls_require_ciphers (compare the smtp transport
3398 option of the same name). This controls incoming TLS connections.
3399
340017. I finally figured out how to make tls_require_ciphers do a similar thing
3401 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3402 before starting the TLS session.
3403
340418. Tabs are now shown as \t in -bP output.
3405
340619. If the log selector return_path_on_delivery was set, Exim crashed when
3407 bouncing a message because it had too many Received: header lines.
3408
340920. If two routers both had headers_remove settings, and the first one included
3410 a superfluous trailing colon, the final name in the first list and the
3411 first name in the second list were incorrectly joined into one item (with a
3412 colon in the middle).
3413
3414
3415Exim version 4.32
3416-----------------
3417
3418 1. Added -C and -D options to the exinext utility, mainly to make it easier
3419 to include in the automated testing, but these could be helpful when
3420 multiple configurations are in use.
3421
3422 2. The exinext utility was not formatting the output nicely when there was
3423 an alternate port involved in the retry record key, nor when there was a
3424 message id as well (for retries that were specific to a specific message
3425 and a specific host). It was also confused by IPv6 addresses, because of
3426 the additional colons they contain. I have fixed the IPv4 problem, and
3427 patched it up to do a reasonable job for IPv6.
3428
3429 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3430 delivery, the log line now contains "pipelined" if PIPELINING was used.
3431
3432 4. An SMTP transport process used to panic and die if the bind() call to set
3433 an explicit outgoing interface failed. This has been changed; it is now
3434 treated in the same way as a connect() failure.
3435
3436 5. A reference to $sender_host_name in the part of a conditional expansion
3437 that was being skipped was still causing a DNS lookup. This no longer
3438 occurs.
3439
3440 6. The def: expansion condition was not recognizing references to header lines
3441 that used bh_ and bheader_.
3442
3443 7. Added the _cache feature to named lists.
3444
3445 8. The code for checking quota_filecount in the appendfile transport was
3446 allowing one more file than it should have been.
3447
3448 9. For compatibility with Sendmail, the command line option
3449
3450 -prval:sval
3451
3452 is equivalent to
3453
3454 -oMr rval -oMs sval
3455
3456 and sets the incoming protocol and host name (for trusted callers). The
3457 host name and its colon can be omitted when only the protocol is to be set.
3458 Note the Exim already has two private options, -pd and -ps, that refer to
3459 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3460 "s", but I don't think that's a major issue.
3461
346210. A number of refactoring changes to the code, none of which should affect
3463 Exim's behaviour:
3464
3465 (a) The number of logging options was getting close to filling up the
3466 32-bit word that was used as a bit map. I have split them into two classes:
3467 those that are passed in the argument to log_write(), and those that are
3468 only ever tested independently outside of that function. These are now in
3469 separate 32-bit words, so there is plenty of room for expansion again.
3470 There is no change in the user interface or the logging behaviour.
3471
3472 (b) When building, for example, log lines, the code previously used a
3473 macro that called string_cat() twice, in order to add two strings. This is
3474 not really sufficiently general. Furthermore, there was one instance where
3475 it was actually wrong because one of the argument was used twice, and in
3476 one call a function was used. (As it happened, calling the function twice
3477 did not affect the overall behaviour.) The macro has been replaced by a
3478 function that can join an arbitrary number of extra strings onto a growing
3479 string.
3480
3481 (c) The code for expansion conditions now uses a table and a binary chop
3482 instead of a serial search (which was left over from when there were very
3483 few conditions). Also, it now recognizes conditions like "pam" even when
3484 the relevant support is not compiled in: a suitably worded error message is
3485 given if an attempt is made to use such a condition.
3486
348711. Added ${time_interval:xxxxx}.
3488
348912. A bug was causing one of the ddress fields not to be passed back correctly
3490 from remote delivery subprocesses. The field in question was not being
3491 subsequently used, so this caused to problems in practice.
3492
349313. Added new log selectors queue_time and deliver_time.
3494
349514. Might have fixed a bug in maildirsizefile handling that threw up
3496 "unexpected character" debug warnings, and recalculated the data
3497 unnecessarily. In any case, I expanded the warning message to give more
3498 information.
3499
350015. Added the message "Restricted characters in address" to the statements in
3501 the default ACL that block characters like @ and % in local parts.
3502
350316. Change 71 for release 4.31 proved to be much less benign that I imagined.
3504 Three changes have been made:
3505
3506 (a) There was a serious bug; a negative response to MAIL caused the whole
3507 recipient domain to be cached as invalid, thereby blocking all messages
3508 to all local parts at the same domain, from all senders. This bug has
3509 been fixed. The domain is no longer cached after a negative response to
3510 MAIL if the sender used is not empty.
3511
3512 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3513 been restored.
3514
3515 (c) A new callout option, "use_sender" has been added for people who want
3516 the modified behaviour.
3517
3518
3519Exim version 4.31
3520-----------------
3521
3522 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3523 Larry Rosenman.
3524
3525 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3526 indeed breaks things for older releases.
3527
3528 3. Added additional logging to the case where there is a problem reading data
3529 from a filter that is running in a subprocess using a pipe, in order to
3530 try to track down a specific problem.
3531
3532 4. Testing facility fudge: when running in the test harness and attempting
3533 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3534 getting "No route to host". Convert this to a timeout.
3535
3536 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3537 warning.
3538
3539 6. Some OS don't have socklen_t but use size_t instead. This affects the
3540 fifth argument of getsockopt() amongst other things. This is now
3541 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3542 can be set for individual OS. I have set it for SunOS5, OSF1, and
3543 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3544 some earlier ones do not.
3545
3546 7. Change 4.30/15 was not doing the test caselessly.
3547
3548 8. The standard form for an IPv6 address literal was being rejected by address
3549 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3550 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3551 this, as well as the form wit