Clarify meaning of "all headers" when rewriting.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
a843aaa6 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.535 2007/10/18 12:08:47 nm4 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
4b3504d0
TK
6TK/01 Add preliminary DKIM support. Currently requires a forked version of
7 ALT-N's libdkim that I have put here:
8 http://duncanthrax.net/exim-experimental/
9
10 Note to Michael Haardt: I had to rename some vars in sieve.c. They
11 were called 'true' and it seems that C99 defines that as a reserved
12 keyword to be used with 'bool' variable types. That means you could
13 not include C99-style headers which use bools without triggering
14 build errors in sieve.c.
15
81ea09ca
NM
16NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
17 as mailq or other aliases. Changed the --help handling significantly
18 to do whats expected. exim_usage() emits usage/help information.
19
f13cddcb
SC
20SC/01 Added the -bylocaldomain option to eximstats.
21
8ad076b2
NM
22NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr
23
a843aaa6
NM
24NM/03 Bugzilla 613: Documentation fix for acl_not_smtp
25
eb4c0de6
PH
26Exim version 4.68
27-----------------
28
29PH/01 Another patch from the Sieve maintainer.
30
6a3bceb1
PH
31PH/02 When an IPv6 address is converted to a string for single-key lookup
32 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
33 dots are used instead of colons so that keys in lsearch files need not
34 contain colons. This was done some time before quoting was made available
35 in lsearch files. However, iplsearch files do require colons in IPv6 keys
36 (notated using the quote facility) so as to distinguish them from IPv4
37 keys. This meant that lookups for IP addresses in host lists did not work
38 for iplsearch lookups.
39
40 This has been fixed by arranging for IPv6 addresses to be expressed with
41 colons if the lookup type is iplsearch. This is not incompatible, because
42 previously such lookups could never work.
43
44 The situation is now rather anomolous, since one *can* have colons in
45 ordinary lsearch keys. However, making the change in all cases is
46 incompatible and would probably break a number of configurations.
47
2e30fa9d
TK
48TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
49 version.
50
0806a9c5
MH
51MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
52 conversion specification without a maximum field width, thereby enabling
53 a rogue spamd server to cause a buffer overflow. While nobody in their
54 right mind would setup Exim to query an untrusted spamd server, an
55 attacker that gains access to a server running spamd could potentially
56 exploit this vulnerability to run arbitrary code as the Exim user.
57
ae276964
TK
58TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
59 $primary_hostname instead of what libspf2 thinks the hosts name is.
60
0f2cbd1b
MH
61MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
62 a directory entry by the name of the lookup key. Previously, if a
63 symlink pointed to a non-existing file or a file in a directory that
64 Exim lacked permissions to read, a lookup for a key matching that
65 symlink would fail. Now it is enough that a matching directory entry
66 exists, symlink or not. (Bugzilla 503.)
67
2b85bce7
PH
68PH/03 The body_linecount and body_zerocount variables are now exported in the
69 local_scan API.
70
93655c46
PH
71PH/04 Added the $dnslist_matched variable.
72
6c512171
PH
73PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
74 This means they are set thereafter only if the connection becomes
75 encrypted.
76
77PH/06 Added the client_condition to authenticators so that some can be skipped
78 by clients under certain conditions.
79
aa6dc513
PH
80PH/07 The error message for a badly-placed control=no_multiline_responses left
81 "_responses" off the end of the name.
82
a96603a0
PH
83PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
84
8f240103
PH
85PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
86 (without spaces) instead of just copying the configuration text.
87
88PH/10 Added the /noupdate option to the ratelimit ACL condition.
89
d677b2f2
PH
90PH/11 Added $max_received_linelength.
91
d52120f2
PH
92PH/12 Added +ignore_defer and +include_defer to host lists.
93
64f2600a
PH
94PH/13 Installed PCRE version 7.2. This needed some changes because of the new
95 way in which PCRE > 7.0 is built.
96
8669f003
PH
97PH/14 Implemented queue_only_load_latch.
98
a4dc33a8
PH
99PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
100 MAIL command. The effect was to mangle the value on 64-bit systems.
101
d6a60c0f
PH
102PH/16 Another patch from the Sieve maintainer.
103
8f128379
PH
104PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
105
8932dffe
PH
106PH/18 If a system quota error occurred while trying to create the file for
107 a maildir delivery, the message "Mailbox is full" was not appended to the
108 bounce if the delivery eventually timed out. Change 4.67/27 below applied
109 only to a quota excession during the actual writing of the file.
d6a60c0f 110
ddea74fa 111PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
112 characters?) which causes problems in log lines. The DN values are now
113 passed through string_printing() before being added to log lines.
114
ddea74fa 115PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
116 and InterBase are left for another time.)
117
ddea74fa
PH
118PH/21 Added message_body_newlines option.
119
ce9f225c
PH
120PH/22 Guard against possible overflow in moan_check_errorcopy().
121
19897d52
PH
122PH/23 POSIX allows open() to be a macro; guard against that.
123
bc64a74d
PH
124PH/24 If the recipient of an error message contained an @ in the local part
125 (suitably quoted, of course), incorrect values were put in $domain and
126 $local_part during the evaluation of errors_copy.
127
eb4c0de6 128
b4ed4da0
PH
129Exim version 4.67
130-----------------
131
22ad45c9
MH
132MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
133 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
134 Jan Srzednicki.
135
b4ed4da0
PH
136PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
137 issue a MAIL command.
138
431b7361
PH
139PH/02 In an ACL statement such as
140
141 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
142
143 if a client was not listed at all, or was listed with a value other than
144 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
145 the condition was not true (as it should be), so access was not denied.
146 The bug was that the ! inversion was incorrectly passed on to the second
147 item. This has been fixed.
148
149PH/03 Added additional dnslists conditions == and =& which are different from
150 = and & when the dns lookup returns more than one IP address.
151
83da1223
PH
152PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
153 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
154
54fc8428
PH
155PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
156 FSYNC, which compiles an option called disable_fsync that allows for
157 bypassing fsync(). The documentation is heavily laced with warnings.
158
34c5e8dd
SC
159SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
160
bbe15da8
PH
161PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
162 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
163 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
164 including adding "make clean"; (3) Added -fPIC when compiling the test
165 dynamically loaded module, to get rid of a warning.
166
0e8a9471
MH
167MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
168 message fails, move_frozen_messages = true and ignore_bounce_errors_after
169 = 0s. The bug is otherwise harmless.
170
f0872424
PH
171PH/07 There was a bug in the dovecot authenticator such that the value of
172 $auth1 could be overwritten, and so not correctly preserved, after a
173 successful authentication. This usually meant that the value preserved by
174 the server_setid option was incorrect.
175
b01dd148
PH
176PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
177
6bf342e1
PH
178PH/09 Installed PCRE release 7.0.
179
273f34d0
PH
180PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
181 run for batched SMTP input. It is now run at the start of every message
182 in the batch. While fixing this I discovered that the process information
183 (output by running exiwhat) was not always getting set for -bs and -bS
184 input. This is fixed, and it now also says "batched" for BSMTP.
185
cf8b11a5
PH
186PH/11 Added control=no_pipelining.
187
41c7c167
PH
188PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
189 patch, slightly modified), and move the expansion of helo_data till after
190 the connection is made in the smtp transport (so it can use these
191 values).
192
9c57cbc0
PH
193PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
194
f3f065bb
PH
195PH/14 Added log_selector = +pid.
196
047bdd8c
PH
197PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
198
0ce9abe6
PH
199PH/16 Add ${if forany and ${if forall.
200
0e22dfd1
PH
201PH/17 Added dsn_from option to vary the From: line in DSNs.
202
4c590bd1
PH
203PH/18 Flush SMTP output before performing a callout, unless control =
204 no_callout_flush is set.
205
09945f1e
PH
206PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
207 was true (the default) a successful delivery failed to delete the retry
208 item, thus causing premature timeout of the address. The bug is now
209 fixed.
210
c51b8e75
PH
211PH/20 Added hosts_avoid_pipelining to the smtp transport.
212
e28326d8
PH
213PH/21 Long custom messages for fakedefer and fakereject are now split up
214 into multiline reponses in the same way that messages for "deny" and
215 other ACL rejections are.
216
75b1493f
PH
217PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
218 with slight modification.
219
7c5214ec
PH
220PH/23 Applied sieve patches from the maintainer "tracking the latest notify
221 draft, changing the syntax and factoring some duplicate code".
222
4311097e
PH
223PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
224 for deliveries of the second and subsequent messages over the same SMTP
225 connection.
226
29f89cad
PH
227PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
228 ${reduce, with only minor "tidies".
229
5e687460
SC
230SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
231
c3611384
PH
232PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
233 expansion side effects.
234
5a11a7b4
PH
235PH/27 When a message times out after an over-quota error from an Exim-imposed
236 quota, the bounce message says "mailbox is full". This message was not
237 being given when it was a system quota that was exceeded. It now should
238 be the same.
239
0e20aff9
MH
240MH/03 Made $recipients available in local_scan(). local_scan() already has
241 better access to the recipient list through recipients_list[], but
242 $recipients can be useful in postmaster-provided expansion strings.
243
ca86f471
PH
244PH/28 The $smtp_command and $smtp_command_argument variables were not correct
245 in the case of a MAIL command with additional options following the
246 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
247 were accidentally chopped off.
248
a14e5636
PH
249PH/29 SMTP synchronization checks are implemented when a command is read -
250 there is a check that no more input is waiting when there shouldn't be
251 any. However, for some commands, a delay in an ACL can mean that it is
252 some time before the response is written. In this time, more input might
253 arrive, invalidly. So now there are extra checks after an ACL has run for
254 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
255 pipelining has not been advertised.
256
ec95d1a6
PH
257PH/30 MH's patch to allow iscntrl() characters to be list separators.
258
42855d71
PH
259PH/31 Unlike :fail:, a custom message specified with :defer: was not being
260 returned in the SMTP response when smtp_return_error_details was false.
261 This has been fixed.
262
57c2c631
PH
263PH/32 Change the Dovecot authenticator to use read() and write() on the socket
264 instead of the C I/O that was originally supplied, because problems were
265 reported on Solaris.
266
58c01c94
PH
267PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
268 Exim which did not show up earlier: it was assuming that a call to
269 SSL_CTX_set_info_callback() might give an error value. In fact, there is
270 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
271 was a macro that became an assignment, so it seemed to work. This has
272 changed to a proper function call with a void return, hence the compile
273 error. Exim's code has been fixed.
274
dee5a20a
PH
275PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
276 cpus.
277
d2ee6114
PH
278PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
279
b2d5182b
PH
280PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
281
79749a79
PH
282PH/37 If a message is not accepted after it has had an id assigned (e.g.
283 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
284 "Completed" line in the log. When some messages of this type were
285 selected by exigrep, they were listed as "not completed". Others were
286 picked up by some special patterns. I have improved the selection
287 criteria to be more general.
79749a79 288
c456d9bb
PH
289PH/38 The host_find_failed option in the manualroute router can now be set
290 to "ignore", to completely ignore a host whose IP address cannot be
291 found. If all hosts are ignored, the behaviour is controlled by the new
292 host_all_ignored option.
293
cd9868ec
PH
294PH/39 In a list of hosts for manualroute, if one item (either because of multi-
295 homing or because of multiple MX records with /mx) generated more than
296 one IP address, and the following item turned out to be the local host,
297 all the secondary addresses of the first item were incorrectly removed
298 from the list, along with the local host and any following hosts (which
299 is what is supposed to happen).
300
ebeaf996
PH
301PH/40 When Exim receives a message, it writes the login name, uid, and gid of
302 whoever called Exim into the -H file. In the case of the daemon it was
303 behaving confusingly. When first started, it used values for whoever
304 started the daemon, but after a SIGHUP it used the Exim user (because it
305 calls itself on a restart). I have changed the code so that it now always
306 uses the Exim user.
307
2679d413
PH
308PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
309 message are rejected with the same error (e.g. no authentication or bad
310 sender address), and a DATA command is nevertheless sent (as can happen
311 with PIPELINING or a stupid MUA), the error message that was given to the
312 RCPT commands is included in the rejection of the DATA command. This is
313 intended to be helpful for MUAs that show only the final error to their
314 users.
315
84024b72
PH
316PH/42 Another patch from the Sieve maintainer.
317
8005d38e
SC
318SC/02 Eximstats - Differentiate between permanent and temporary rejects.
319 Eximstats - Fixed some broken HTML links and added missing column headers
320 (Jez Hancock).
321 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
322 columns for Rejects, Temp Rejects, Ham, and Spam rows.
323
3298c6c6
SC
324SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
325
a43a27c5
PH
326PH/43 Yet another patch from the Sieve maintainer.
327
58eb016e 328PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
329 the response to the final '.' that terminates a message, but only in the
330 case where the client has not sent further data following the '.'
331 (unfortunately, this is allowed). However, in many cases there won't be
332 any further data because there won't be any more messages to send. A call
333 to select() can be used: if it shows that the input is "ready", there is
334 either input waiting, or the socket has been closed. An attempt to read
335 the next input character can distinguish the two cases. Previously, Exim
58eb016e 336 would have sent an OK response which the client would never have see.
563b63fa
PH
337 This could lead to message repetition. This fix should cure that, at
338 least in a lot of common cases.
58eb016e 339
b43a74ea
PH
340PH/45 Do not advertise STARTTLS in response to HELP unless it would be
341 advertised in response to EHLO.
342
b4ed4da0 343
5dd1517f
PH
344Exim version 4.66
345-----------------
346
347PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
348 fixed by 4.65/MH/01 (is this a record?) are fixed:
349
350 (i) An empty string was always treated as zero by the numeric comparison
351 operators. This behaviour has been restored.
352
353 (ii) It is documented that the numeric comparison operators always treat
354 their arguments as decimal numbers. This was broken in that numbers
355 starting with 0 were being interpreted as octal.
356
357 While fixing these problems I realized that there was another issue that
358 hadn't been noticed. Values of message_size_limit (both the global option
359 and the transport option) were treated as octal if they started with 0.
360 The documentation was vague. These values are now always treated as
361 decimal, and I will make that clear in the documentation.
362
363
93cfa765
TK
364Exim version 4.65
365-----------------
366
367TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
368 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
369 versions. (#438)
370
d6066548
MH
371MH/01 Don't check that the operands of numeric comparison operators are
372 integers when their expansion is in "skipping" mode (fixes bug
373 introduced by 4.64-PH/07).
374
4362ff0d
PH
375PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
376 child addresses, Exim now panics and dies. Previously, because the count
377 is held in a short int, deliveries were likely to be lost. As such a
378 large number of recipients for a single message is ridiculous
379 (performance will be very, very poor), I have chosen to impose a limit
380 rather than extend the field.
381
93cfa765 382
944e9e9c
TF
383Exim version 4.64
384-----------------
aa41d2de 385
21d74bd9
TK
386TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
387 leftover -K file (the existence of which was triggered by #402).
388 While we were at it, introduced process PID as part of the -K
389 filename. This should rule out race conditions when creating
390 these files.
391
392TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
393 processing considerably. Previous code took too long for large mails,
394 triggering a timeout which in turn triggers #401.
395
396TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
397 in the DK code in transports.c. sendfile() is not really portable,
398 hence the _LINUX specificness.
944e9e9c
TF
399
400TF/01 In the add_headers option to the mail command in an Exim filter,
401 there was a bug that Exim would claim a syntax error in any
402 header after the first one which had an odd number of characters
403 in the field name.
404
2b1c6e3a
PH
405PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
406 callout verification, Exim cached a "reject" for the entire domain. This
407 is correct for most verifications, but it is not correct for a recipient
408 verification with use_sender or use_postmaster set, because in that case
409 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
410 case of MAIL FROM:<> rejection from other early rejections (e.g.
411 rejection of HELO). When verifying a recipient using a non-null MAIL
412 address, the cache is ignored if it shows MAIL FROM:<> rejection.
413 Whatever the result of the callout, the value of the domain cache is
414 left unchanged (for any other kind of callout, getting as far as trying
415 RCPT means that the domain itself is ok).
416
1f872c80
PH
417PH/02 Tidied a number of unused variable and signed/unsigned warnings that
418 gcc 4.1.1 threw up.
419
420PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
421 manifest itself as EPIPE rather than ECONNECT. When tidying away a
422 session, the daemon ignores ECONNECT errors and logs others; it now
423 ignores EPIPE as well.
424
d203e649
PH
425PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
426 (quoted-printable decoding).
427
cc2ed8f7 428PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 429 later the small subsequent patch to fix an introduced bug.
f951fd57 430
ddfcd446
PH
431PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
432
d45b1de8
PH
433PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
434
435PH/08 An error is now given if message_size_limit is specified negative.
436
38a0a95f 437PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 438 to be given (somewhat) arbitrary names.
38a0a95f 439
a2405d83
JJ
440JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
441 in 4.64-PH/09.
442
443JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
444 miscellaneous code fixes
445
6ea85e9a
PH
446PH/10 Added the log_reject_target ACL modifier to specify where to log
447 rejections.
448
26da7e20
PH
449PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
450 hostname. This is wrong, because it relates to the incoming message (and
451 probably the interface on which it is arriving) and not to the outgoing
452 callout (which could be using a different interface). This has been
453 changed to use the value of the helo_data option from the smtp transport
454 instead - this is what is used when a message is actually being sent. If
455 there is no remote transport (possible with a router that sets up host
456 addresses), $smtp_active_hostname is used.
6ea85e9a 457
14aa5a05 458PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 459 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
460 (a) The code assumed that strncpy() returns a negative number on buffer
461 overflow, which isn't the case. Replaced with Exim's string_format()
462 function.
463 (b) There were several signed/unsigned issues. I just did the minimum
464 hacking in of casts. There is scope for a larger refactoring.
465 (c) The code used strcasecmp() which is not a standard C function.
466 Replaced with Exim's strcmpic() function.
467 (d) The code set only $1; it now sets $auth1 as well.
468 (e) A simple test gave the error "authentication client didn't specify
469 service in request". It would seem that Dovecot has changed its
470 interface. Fortunately there's a specification; I followed it and
471 changed what the client sends and it appears to be working now.
472
ff75a1f7
PH
473PH/13 Added $message_headers_raw to provide the headers without RFC 2047
474 decoding.
475
e6f6568e
PH
476PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
477 address A is aliased to B and C, where B exists and C does not. Without
478 -v the output is "A verified" because verification stops after a
479 successful redirection if more than one address is generated. However,
480 with -v the child addresses are also verified. Exim was outputting "A
481 failed to verify" and then showing the successful verification for C,
482 with its parentage. It now outputs "B failed to verify", showing B's
483 parentage before showing the successful verification of C.
484
d6f6e0dc
PH
485PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
486 look up a TXT record in a specific list after matching in a combined
487 list.
488
322050c2
PH
489PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
490 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
491 they consult the DNS. I had assumed they would set it the way they
492 wanted; and indeed my experiments on Linux seem to show that in some
493 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
494 To be on the safe side, however, I have now made the interface to
495 host_find_byname() similar to host_find_bydns(), with an argument
496 containing the DNS resolver options. The host_find_byname() function now
497 sets these options at its start, just as host_find_bydns() does. The smtp
498 transport options dns_qualify_single and dns_search_parents are passed to
499 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
500 of host_find_byname() use the default settings of RES_DEFNAMES
501 (qualify_single) but not RES_DNSRCH (search_parents).
502
08955dd3
PH
503PH/17 Applied (a modified version of) Nico Erfurth's patch to make
504 spool_read_header() do less string testing, by means of a preliminary
505 switch on the second character of optional "-foo" lines. (This is
506 overdue, caused by the large number of possibilities that now exist.
507 Originally there were few.) While I was there, I also converted the
508 str(n)cmp tests so they don't re-test the leading "-" and the first
509 character, in the hope this might squeeze out yet more improvement.
510
1eccaa59
PH
511PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
512 flag allowing group syntax was set by the header_syntax check but not
513 turned off, possible causing trouble later; (2) The flag was not being
514 set at all for the header_verify test, causing "group"-style headers to
515 be rejected. I have now set it in this case, and also caused header_
516 verify to ignore an empty address taken from a group. While doing this, I
517 came across some other cases where the code for allowing group syntax
518 while scanning a header line wasn't quite right (mostly, not resetting
519 the flag correctly in the right place). These bugs could have caused
520 trouble for malformed header lines. I hope it is now all correct.
521
602e59e5
PH
522PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
523 with the "reply" argument non-NULL. The code, however (which originally
524 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
525 but it didn't always do it. This confused somebody who was copying the
526 code for some other use. I have removed all the tests.
527
411ef850
PH
528PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
529 feature that was used to support insecure browsers during the U.S. crypto
530 embargo. It requires special client support, and Exim is probably the
531 only MTA that supported it -- and would never use it because real RSA is
532 always available. This code has been removed, because it had the bad
533 effect of slowing Exim down by computing (never used) parameters for the
534 RSA_EXPORT functionality.
535
7befa435
PH
536PH/21 On the advice of Timo Sirainen, added a check to the dovecot
537 authenticator to fail if there's a tab character in the incoming data
538 (there should never be unless someone is messing about, as it's supposed
539 to be base64-encoded). Also added, on Timo's advice, the "secured" option
540 if the connection is using TLS or if the remote IP is the same as the
541 local IP, and the "valid-client-cert option" if a client certificate has
542 been verified.
543
48da4259 544PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
545 authenticators. This can be used for authorization after authentication
546 succeeds. (In the case of plaintext, it servers for both authentication
547 and authorization.)
548
48da4259
PH
549PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
550 if any retry times were supplied.
551
d1d5595c
PH
552PH/24 Exim crashed if verify=helo was activated during an incoming -bs
553 connection, where there is no client IP address to check. In this
554 situation, the verify now always succeeds.
555
0ef732d9
PH
556PH/25 Applied John Jetmore's -Mset patch.
557
328895cc
PH
558PH/26 Added -bem to be like -Mset, but loading a message from a file.
559
fd700877
PH
560PH/27 In a string expansion for a processed (not raw) header when multiple
561 headers of the same name were present, leading whitespace was being
562 removed from all of them, but trailing whitespace was being removed only
563 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
564 before concatenation. Completely empty headers in a concatenation (as
565 before) are ignored.
fd700877 566
8dce1a6f
PH
567PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
568 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
569
17af4a17
PH
570PH/29 [Removed. This was a change that I later backed out, and forgot to
571 correct the ChangeLog entry (that I had efficiently created) before
572 committing the later change.]
f6c332bd
PH
573
574PH/30 Exim was sometimes attempting to deliver messages that had suffered
575 address errors (4xx response to RCPT) over the same connection as other
576 messages routed to the same hosts. Such deliveries are always "forced",
577 so retry times are not inspected. This resulted in far too many retries
578 for the affected addresses. The effect occurred only when there were more
579 hosts than the hosts_max_try setting in the smtp transport when it had
580 the 4xx errors. Those hosts that it had tried were not added to the list
581 of hosts for which the message was waiting, so if all were tried, there
582 was no problem. Two fixes have been applied:
583
584 (i) If there are any address or message errors in an SMTP delivery, none
585 of the hosts (tried or untried) are now added to the list of hosts
586 for which the message is waiting, so the message should not be a
587 candidate for sending over the same connection that was used for a
588 successful delivery of some other message. This seems entirely
589 reasonable: after all the message is NOT "waiting for some host".
590 This is so "obvious" that I'm not sure why it wasn't done
591 previously. Hope I haven't missed anything, but it can't do any
592 harm, as the worst effect is to miss an optimization.
593
594 (ii) If, despite (i), such a delivery is accidentally attempted, the
595 routing retry time is respected, so at least it doesn't keep
596 hammering the server.
597
c1114884
PH
598PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
599 in ${readsocket because some servers need this prod.
600
7a0743eb
PH
601PH/32 Added some extra debug output when updating a wait-xxx database.
602
0d85fa3f
PH
603PH/33 The hint "could be header name not terminated by colon", which has been
604 given for certain expansion errors for a long time, was not being given
605 for the ${if def:h_colon_omitted{... case.
606
1bf43b78
PH
607PH/34 The spec says: "With one important exception, whenever a domain list is
608 being scanned, $domain contains the subject domain." There was at least
609 one case where this was not true.
610
520de300
PH
611PH/35 The error "getsockname() failed: connection reset by peer" was being
612 written to the panic log as well as the main log, but it isn't really
613 panic-worthy as it just means the connection died rather early on. I have
614 removed the panic log writing for the ECONNRESET error when getsockname()
615 fails.
616
48c7f9e2
PH
617PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
618 runs only) independently of the message's sender address. This meant
619 that, if the 4xx error was in fact related to the sender, a different
620 message to the same recipient with a different sender could confuse
621 things. In particualar, this can happen when sending to a greylisting
622 server, but other circumstances could also provoke similar problems.
623 I have changed the default so that the retry time for these errors is now
624 based a combination of the sender and recipient addresses. This change
625 can be overridden by setting address_retry_include_sender=false in the
626 smtp transport.
627
99ea1c86
PH
628PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
629 remote server are returned as part of bounce messages. This was not
630 happening for LMTP over a pipe (the lmtp transport), but now it is the
631 same for both kinds of LMTP.
632
a2042e78
PH
633PH/38 Despite being documented as not happening, Exim was rewriting addresses
634 in header lines that were in fact CNAMEs. This is no longer the case.
635
4fbcfc2e
PH
636PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
637 and queue runs started by the daemon processed all messages. This has
638 been fixed so that -R and -S can now usefully be given with -q<time>.
639
aa41d2de
PH
640PH/40 Import PCRE release 6.7 (fixes some bugs).
641
af561417
PH
642PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
643
3cc66b45
PH
644PH/42 Give an error if -q is specified more than once.
645
194cc0e4
PH
646PH/43 Renamed the variables $interface_address and $interface_port as
647 $received_ip_address and $received_port, to make it clear that these
648 values apply to message reception, and not to the outgoing interface when
649 a message is delivered. (The old names remain recognized, of course.)
650
a401ddaa
PH
651PH/44 There was no timeout on the connect() call when using a Unix domain
652 socket in the ${readsocket expansion. There now is.
653
4e88a19f
PH
654PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
655 be meaningful with "accept".
656
d7d7b289
SC
657SC/01 Eximstats V1.43
658 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
659
660SC/02 Eximstats V1.44
661 Use a glob alias rather than an array ref in the generated
662 parser. This improves both readability and performance.
663
664SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
665 Collect SpamAssassin and rejection statistics.
666 Don't display local sender or destination tables unless
667 there is data to show.
668 Added average volumes into the top table text output.
669
670SC/04 Eximstats V1.46
671 Collect data on the number of addresses (recipients)
672 as well as the number of messages.
673
674SC/05 Eximstats V1.47
675 Added 'Message too big' to the list of mail rejection
676 reasons (thanks to Marco Gaiarin).
677
678SC/06 Eximstats V1.48
679 Mainlog lines which have GMT offsets and are too short to
680 have a flag are now skipped.
681
682SC/07 Eximstats V1.49 (Alain Williams)
683 Added the -emptyok flag.
684
685SC/08 Eximstats V1.50
686 Fixes for obtaining the IP address from reject messages.
687
0ea2a468
JJ
688JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
689 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
690 whitesspace changes from 4.64-PH/27
691
692JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
693 match 4.64-PH/13
694
695JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
696 are found, allow negative numbers in numeric criteria)
697
698JJ/06 exipick.20061117.2, added new $message_body_missing variable
699
700JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
701 to match changes made in 4.64-PH/43
702
8a10f5a4
PH
703PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
704
30e18802
PH
705PH/47 Put in an explicit test for a DNS lookup of an address record where the
706 "domain" is actually an IP address, and force a failure. This locks out
707 those revolvers/nameservers that support "A-for-A" lookups, in
708 contravention of the specifications.
709
55728a4f
PH
710PH/48 When a host name was looked up from an IP address, and the subsequent
711 forward lookup of the name timed out, the host name was left in
712 $sender_host_name, contrary to the specification.
d7d7b289 713
d7837193
PH
714PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
715 restricted to single-key lookups, Exim was not diagnosing an error if
716 * or *@ was used with a query-style lookup.
717
87054a31
PH
718PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
719
ea2c01d2
MH
720MH/01 local_scan ABI version incremented to 1.1. It should have been updated
721 long ago, but noone interested enough thought of it. Let's just say that
722 the "1.1" means that there are some new functions that weren't there at
723 some point in the past.
724
e4fa6968
PH
725PH/51 Error processing for expansion failure of helo_data from an smtp
726 transport during callout processing was broken.
727
56f5d9bd
PH
728PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
729 tested/used via the -bh/-bhc/-bs options.
730
922e1c28
PH
731PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
732 bug, fixed in subsequent PCRE releases).
733
21eb6e72
PH
734PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
735 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
736
a0540757
PH
737PH/55 Check for a ridiculously long file name in exim_dbmbuild.
738
944e9e9c 739
478be7b0
SC
740Exim version 4.63
741-----------------
742
743SC/01 Use a glob alias rather than an array ref in eximstats generated
744 parser. This improves both readability and performance.
745
746SC/02 Collect SpamAssassin and rejection statistics in eximstats.
747 Don't display local sender or destination tables in eximstats unless
748 there is data to show.
749 Added average volumes into the eximstats top table text output.
750
751SC/03 Collect data on the number of addresses (recipients) as well
752 as the number of messages in eximstats.
753
2b965a65
TF
754TF/01 Correct an error in the documentation for the redirect router. Exim
755 does (usually) call initgroups() when daemonizing.
478be7b0 756
45b91596
PH
757TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
758 with consistent privilege compared to when running as a daemon.
478be7b0 759
c59f5781
TF
760TF/03 Note in the spec that $authenticated_id is not set for local
761 submissions from trusted users.
762
90fc3069
TF
763TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
764 Thanks to Dean Brooks <dean@iglou.com> for the patch.
765
6083aca0
TF
766TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
767 by adding some example configuration directives to the default
768 configuration file. A little bit of work is required to uncomment the
769 directives and define how usernames and passwords are checked, but
770 there is now a framework to start from.
771
765b530f
PH
772PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
773 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
774 without this. I don't know how relevant this is to other LDAP libraries.
775
4e167a8c
PH
776PH/02 Add the verb name to the "unknown ACL verb" error.
777
4608d683
PH
778PH/03 Magnus Holmgren's patch for filter_prepend_home.
779
b8dc3e4a
PH
780PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
781
5418e93b
PH
782PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
783 directory not expanded when it should be if an expanded home directory
784 was set for the address (which is overridden by the transport).
785
b4a9bda2
PH
786PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
787 libradius.
788
45b91596
PH
789PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
790 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
791 because it is too late at that time, and has no effect.
792
5547e2c5
PH
793PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
794 security issue with \' (bugzilla #107). I could not use the
795 PQescapeStringConn() function, because it needs a PGconn value as one of
796 its arguments.
797
dbcef0ea
PH
798PH/08 When testing addresses using -bt, indicate those final addresses that
799 are duplicates that would not cause an additional delivery. At least one
800 person was confused, thinking that -bt output corresponded to deliveries.
801 (Suppressing duplicates isn't a good idea as you lose the information
802 about possibly different redirections that led to the duplicates.)
803
25257489
PH
804PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
805 systems where poll() doesn't work, in particular OS X.
806
c816d124
PH
807PH/10 Added more information to debugging output for retry time not reached.
808
a9ccd69a
PH
809PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
810 operations in malware.c.
811
75fa1910
PH
812PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
813 signatures.
814
a7d7aa58
PH
815PH/13 If write_rejectlog was set false when logging was sent to syslog with
816 syslog_duplication set false, log lines that would normally be written
817 both the the main log and to the reject log were not written to syslog at
818 all.
819
42119b09
PH
820PH/14 In the default configuration, change the use of "message" in ACL warn
821 statements to "add_header".
822
41609df5
PH
823PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
824 not followed by a command (e.g. "seen endif").
825
a5bd321b
PH
826PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
827 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
828 latter.
829
e85a7ad5 830PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
831 so that it is now:
832
e85a7ad5
PH
833 ${if or { \
834 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
835 { match{$h_precedence:}{(?i)bulk|list|junk} } \
836 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
837 }{no}{yes}}
838
e85a7ad5
PH
839 The Auto-Submitted: and various List- headers are standardised, whereas I
840 don't think Precedence: ever was.
5dff5817 841
d8fe1c03
PH
842PH/18 Refactored debugging code in route_finduser() to show more information,
843 in particular, the error code if getpwnam() issues one.
844
16282d2b
PH
845PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
846 This is apparently needed in addition to the PH/07 change above to avoid
847 any possible encoding problems.
848
35d40a98
PH
849PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
850 but not after initializing Perl.
851
034d99ab
PH
852PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
853 output them only if debugging. By default they are written stderr,
854 apparently, which is not desirable.
855
6ec97b1b
PH
856PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
857 queries.
858
e22ca4ac
JJ
859JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
860 --not options
861
862JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
863
33d73e3b
PH
864PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
865 authenticated or an ident call has been made. Suppress the default
866 values for $authenticated_id and $authenticated_sender (but permit -oMai
867 and -oMas) when testing with -bh.
868
9ecb03f3
PH
869PH/24 Re-jigged the order of the tests in the default configuration so that the
870 tests for valid domains and recipients precede the DNS black list and CSA
871 tests, on the grounds that those ones are more expensive.
872
084efe8d
PH
873PH/25 Exim was not testing for a space following SMTP commands such as EHLO
874 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
875 This bug exists in every version of Exim that I still have, right back to
876 0.12.
877
366fc9f0
PH
878PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
879 However, an attempt to turn on case-sensitivity in a regex key by
880 including (?-i) didn't work because the subject string was already
881 lowercased, and the effects were non-intuitive. It turns out that a
882 one-line patch can be used to allow (?-i) to work as expected.
883
c59f5781 884
c887c79e
TF
885Exim version 4.62
886-----------------
887
888TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
889 other effects) broke the use of negated acl sub-conditions.
890
1cce3af8
PH
891PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
892 patch).
893
afb3eaaf
PH
894PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
895 "Deny" causes Exim to reject the incoming connection with a 554 error.
896 Unfortunately, if there is a major crisis, such as a disk failure,
897 tcp-wrappers gives "deny", whereas what one would like would be some
898 kind of temporary error. A kludge has been added to help with this.
899 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
900 554 error is used if errno is still zero or contains ENOENT (which occurs
901 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
902 451 error is used.
903
e173618b
PH
904PH/03 Add -lutil to the default FreeBSD LIBS setting.
905
dd16e114
PH
906PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
907 errors. Otherwise a message that provokes a temporary error (when other
908 messages do not) can cause a whole host to time out.
909
f7fd3850
PH
910PH/05 Batch deliveries by appendfile and pipe transports did not work when the
911 addresses were routed directly to files or pipes from a redirect router.
912 File deliveries just didn't batch; pipe deliveries might have suffered
913 odd errors.
914
d87df92c
PH
915PH/06 A failure to get a lock for a hints database would erroneously always say
916 "Failed to get write lock", even when it was really a read lock.
917
7e9f683d
PH
918PH/07 The appendfile transport was creating MBX lock files with a fixed mode
919 of 0600. This has been changed to use the value of the lockfile_mode
920 option (which defaults to 0600).
921
bfad5236
PH
922PH/08 Applied small patch from the Sieve maintainer.
923
01c490df
PH
924PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
925 folder from quota calculations, a direct delivery into this folder messed
926 up the contents of the maildirsize file. This was because the regex was
927 used only to exclude .Trash (or whatever) when the size of the mailbox
928 was calculated. There was no check that a delivery was happening into an
929 excluded directory. This bug has been fixed by ignoring all quota
930 processing for deliveries into excluded directories.
931
d6629cdc
PH
932PH/10 Added the maildirfolder_create_regex option to appendfile.
933
1cce3af8 934
214e2000
PH
935Exim version 4.61
936-----------------
937
938PH/01 The code for finding all the local interface addresses on a FreeBSD
939 system running IPv6 was broken. This may well have applied to all BSD
940 systems, as well as to others that have similar system calls. The broken
941 code found IPv4 interfaces correctly, but gave incorrect values for the
942 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
943 that it would not match correctly against @[] and not recognize the IPv6
944 addresses as local.
945
f9daeae0
PH
946PH/02 The ipliteral router was not recognizing addresses of the form user@
947 [ipv6:....] because it didn't know about the "ipv6:" prefix.
948
7e66e54d
PH
949PH/03 Added disable_ipv6.
950
c8ea1597
PH
951PH/04 Changed $reply_address to use the raw form of the headers instead of the
952 decoded form, because it is most often used to construct To: headers
953 lines in autoreplies, and the decoded form may well be syntactically
954 invalid. However, $reply_address has leading white space removed, and all
955 newlines turned into spaces so that the autoreply transport does not
956 grumble.
957
911f6fde
PH
958PH/05 If group was specified without a user on a router, and no group or user
959 was specified on a transport, the group from the router was ignored.
960
47ca6d6c
PH
961PH/06 Increased the number of ACL variables to 20 of each type, and arranged
962 for visible compile-time settings that can be used to change these
963 numbers, for those that want even more. Backwards compatibility with old
964 spool files has been maintained. However, going back to a previous Exim
965 release will lost any variables that are in spool files.
966
ed0e9820
PH
967PH/07 Two small changes when running in the test harness: increase delay when
968 passing a TCP/IP connection to a new process, in case the original
969 process has to generate a bounce, and remove special handling of
970 127.0.0.2 (sic), which is no longer necessary.
971
eff37e47
PH
972PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
973 be the same on different OS.
974
1921d2ea
PH
975PH/09 Moved a debug statement in filter processing to avoid a race problem when
976 testing.
977
b3f69ca8
JJ
978JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
979 whether --show-vars was specified or not
980
981JJ/02 exipick: Added support for new ACL variable spool format introduced
982 in 4.61-PH/06
983
424a1c63
PH
984PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
985 syntactically invalid From: or Reply-to: line, and a filter used this to
986 generate an autoreply, and therefore failed to obtain an address for the
987 autoreply, Exim could try to deliver to a non-existent relative file
988 name, causing unrelated and misleading errors. What now happens is that
989 it logs this as a hard delivery error, but does not attempt to create a
990 bounce message.
991
7a100415
PH
992PH/11 The exinext utility has a -C option for testing purposes, but although
993 the given file was scanned by exinext itself; it wasn't being passed on
994 when Exim was called.
995
19b9dc85
PH
996PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
997 an end-of-file indication when reading a command response.
998
309bd837
PH
999PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
1000 compiled. In many other places in Exim, IPv6 addresses are always
1001 recognized, so I have changed this. It also means that IPv4 domain
1002 literals of the form [IPV4:n.n.n.n] are now always recognized.
1003
59e82a2a
PH
1004PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
1005 used if the router is not running as root, for example, when verifying at
1006 ACL time, or when using -bh. The debugging output from this situation was
1007 non-existent - all you got was a failure to exec. I have made two
1008 changes:
1009
1010 (a) Failures to set uid/gid, the current directory, or a process leader
1011 in a subprocess such as that created by queryprogram now generate
1012 suitable debugging ouput when -d is set.
1013
1014 (b) The queryprogram router detects when it is not running as root,
1015 outputs suitable debugging information if -d is set, and then runs
1016 the subprocess without attempting to change uid/gid.
1017
9edc04ce
PH
1018PH/15 Minor change to Makefile for building test_host (undocumented testing
1019 feature).
1020
1349e1e5
PH
1021PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1022 additional section of a DNS packet that returns MX or SRV records.
1023 Instead, it always explicitly searches for A/AAAA records. This avoids
1024 major problems that occur when a DNS server includes only records of one
1025 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1026 fixed another bug: if SRV records were looked up and the corresponding
1027 address records were *not* found in the additional section, the port
1028 values from the SRV records were lost.
1029
ea49d0e1
PH
1030PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1031 using the correct key (the original address) when searching the retry
1032 rules in order to find which one to use for generating the retry hint.
1033
064a94c9
PH
1034PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1035 adding the default one. Similarly, if it contains a Reply-To: header, the
1036 errors_reply_to option, if set, is not used.
1037
727071f8
PH
1038PH/19 When calculating a retry time, Exim used to measure the "time since
1039 failure" by looking at the "first failed" field in the retry record. Now
1040 it does not use this if it is later than than the arrival time of the
1041 message. Instead it uses the arrival time. This makes for better
1042 behaviour in cases where some deliveries succeed, thus re-setting the
1043 "first failed" field. An example is a quota failure for a huge message
1044 when small messages continue to be delivered. Without this change, the
1045 "time since failure" will always be short, possible causing more frequent
1046 delivery attempts for the huge message than are intended.
dd16e114 1047 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1048
f78eb7c6
PH
1049PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1050 $1, $2, $3) because the numerical variables can be reset during some
1051 expansion items (e.g. "match"), thereby losing the authentication data.
1052
21c28500
PH
1053PH/21 Make -bV show the size of off_t variables so that the test suite can
1054 decide whether to run tests for quotas > 2G.
1055
1056PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1057 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1058 filecount value is greater than 2G or if a quota value is greater than 2G
1059 on a system where the size of off_t is not greater than 4, a panic error
1060 is given.
1061
1688f43b
PH
1062PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1063 never match. The debug and -bh output now contains an explicit error
1064 message indicating a malformed IPv4 address or mask.
1065
1066PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1067 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1068 PH/23 above applies.
1069
9675b384
PH
1070PH/25 Do not write to syslog when running in the test harness. The only
1071 occasion when this arises is a failure to open the main or panic logs
1072 (for which there is an explicit test).
1073
6a3f1455
PH
1074PH/26 Added the /no_tell option to "control=freeze".
1075
dac79d3e
PH
1076PH/27 If a host name lookup failed very early in a connection, for example, if
1077 the IP address matched host_lookup and the reverse lookup yielded a name
1078 that did not have a forward lookup, an error message of the form "no IP
1079 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1080 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1081
5977a0b3
PH
1082PH/28 An enabling patch from MH: add new function child_open_exim2() which
1083 allows the sender and the authenticated sender to be set when
1084 submitting a message from within Exim. Since child_open_exim() is
1085 documented for local_scan(), the new function should be too.
1086
c91535f3
PH
1087PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1088 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1089 results in an empty string is now treated as unset.
1090
0d46a8c8
PH
1091PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1092
278c6e6c
PH
1093PH/31 Added sender_verify_fail logging option.
1094
2cbb4081
PH
1095PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1096 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1097 tidied the source and removed it altogether.
1098
3eef829e
PH
1099PH/33 When a queue run was abandoned because the load average was too high, a
1100 log line was always written; now it is written only if the queue_run log
1101 selector is set. In addition, the log line for abandonment now contains
1102 information about the queue run such as the pid. This is always present
1103 in "start" and "stop" lines but was omitted from the "abandon" line.
1104
1ab95fa6
PH
1105PH/34 Omit spaces between a header name and the colon in the error message that
1106 is given when verify = headers_syntax fails (if there are lots of them,
1107 the message gets confusing).
1108
230205fc
PH
1109PH/35 Change the default for dns_check_names_pattern to allow slashes within
1110 names, as there are now some PTR records that contain slashes. This check
1111 is only to protect against broken name servers that fall over on strange
1112 characters, so the fact that it applies to all lookups doesn't matter.
1113
75e0e026
PH
1114PH/36 Now that the new test suite is complete, we can remove some of the
1115 special code in Exim that was needed for the old test suite. For example,
1116 sorting DNS records because real resolvers return them in an arbitrary
1117 order. The new test suite's fake resolver always returns records in the
1118 same order.
1119
1120PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1121 bounces) except when queue_only is set, to avoid logging races between
1122 the different processes.
1123
145396a6
PH
1124PH/38 Panic-die if .include specifies a non-absolute path.
1125
3cd34f13
PH
1126PH/39 A tweak to the "H" retry rule from its user.
1127
11121d3d
JJ
1128JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1129 a label. They prevented compilation on older perls.
1130
1131JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1132 a warning to be raised on newish perls.
1133
1134JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1135 on queue. Changes to match documented behaviour of showing count of
1136 messages matching specified criteria.
1137
8def5aaf
PH
1138PH/40 Changed the default ident timeout from 30s to 5s.
1139
929ba01c
PH
1140PH/41 Added support for the use of login_cap features, on those BSD systems
1141 that have them, for controlling the resources used by pipe deliveries.
1142
2632889e
PH
1143PH/42 The content-scanning code uses fopen() to create files in which to put
1144 message data. Previously it was not paying any attention to the mode of
1145 the files. Exim runs with umask(0) because the rest of the code creates
1146 files with open(), and sets the required mode explicitly. Thus, these
1147 files were ending up world-writeable. This was not a big issue, because,
1148 being within the spool directory, they were not world-accessible. I have
1149 created a function called modefopen, which takes an additional mode
1150 argument. It sets umask(777), creates the file, chmods it to the required
1151 mode, then resets the umask. All the relevant calls to fopen() in the
1152 content scanning code have been changed to use this function.
1153
944a9c55
PH
1154PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1155 to 24 hours. This avoids potential overflow problems when processing G
1156 and H retry rules. I suspect nobody ever tinkers with this value.
1157
4a23603b
PH
1158PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1159
4730f942
PH
1160PH/45 When the plaintext authenticator is running as a client, the server's
1161 challenges are checked to ensure they are valid base64 strings. By
1162 default, the authentication attempt is cancelled if an invalid string is
1163 received. Setting client_ignore_invalid_base64 true ignores these errors.
1164 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1165 they are received. Thus, the responses can be made to depend on the
1166 challenges. If an invalid string is ignored, an empty string is placed in
1167 the variable.
1168
30dba1e6
PH
1169PH/46 Messages that are created by the autoreply transport now contains a
1170 References: header, in accordance with RFCs 2822 and 3834.
1171
382afc6b
PH
1172PH/47 Added authenticated_sender_force to the smtp transport.
1173
a86229cf
PH
1174PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1175
50c99ba6
PH
1176PH/49 Installed latest patch from the Sieve maintainer.
1177
d35e429d
PH
1178PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1179 was also set, the appendfile transport was unnecessarily scanning a
1180 directory of message files (e.g. for maildir delivery) to find the count
1181 of files (along with the size), even though it did not need this
1182 information. It now does the scan only if it needs to find either the
1183 size of the count of files.
1184
f90d018c
PH
1185PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1186
75def545
PH
1187PH/52 Two bugs concerned with error handling when the smtp transport is
1188 used in LMTP mode:
1189
1190 (i) Exim was not creating retry information for temporary errors given
1191 for individual recipients after the DATA command when the smtp transport
1192 was used in LMTP mode. This meant that they could be retried too
1193 frequently, and not timed out correctly.
1194
1195 (ii) Exim was setting the flag that allows error details to be returned
1196 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1197 recipients that were returned after the DATA command.
1198
1199PH/53 This is related to PH/52, but is more general: for any failing address,
1200 when detailed error information was permitted to be returned to the
1201 sender, but the error was temporary, then after the final timeout, only
1202 "retry timeout exceeded" was returned. Now it returns the full error as
1203 well as "retry timeout exceeded".
1204
c46782ef
PH
1205PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1206 do this, and (what is worse) MTAs that accept it.
1207
71fafd95
PH
1208PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1209 will now be deprecated.
1210
2c5db4fd
PH
1211PH/56 New os.c-cygwin from the Cygwin maintainer.
1212
9cf6b11a
JJ
1213JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1214 formats (previously only available in exim formats via -bpr, -bpru,
1215 and -bpra. Now also available in native and exiqgrep formats)
1216
1217JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1218 with very large, slow to parse queues
1219
1220JJ/08 exipick: added ! as generic prefix to negate any criteria format
1221
1222JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1223
898d150f
PH
1224PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1225 responses to authentication challenges, though it was showing the
1226 challenges; (ii) I've removed the CR characters from the debug output for
1227 SMTP output lines.
1228
46218253
PH
1229PH/58 Allow for the insertion of a newline as well as a space when a string
1230 is turned into more than one encoded-word during RFC 2047 encoding. The
1231 Sieve code now uses this.
1232
e97957bc
PH
1233PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1234 data_4xx, lost_connection, tls_required.
1235
81e509d7
PH
1236PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1237 message was being sent as an SMTP response.
1238
3d240ff7
PH
1239PH/61 Add -l and -k options to exicyclog.
1240
b37c4101
PH
1241PH/62 When verifying, if an address was redirected to one new address, so that
1242 verification continued, and the new address failed or deferred after
1243 having set something in $address_data, the value of $address_data was not
1244 passed back to the ACL. This was different to the case when no
1245 redirection occurred. The value is now passed back in both cases.
1246
79378e0f
PH
1247PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1248 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1249 use login_cap.h, so on its own it isn't the distinguishing feature. The
1250 new name refers directly to the setclassresources() function.
1251
e49c7bb4
PH
1252PH/65 Added configuration files for NetBSD3.
1253
d114ec46
PH
1254PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1255
f3d7df6c
PH
1256PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1257 is preferred over IPv4.
1258
715ab376
PH
1259PH/68 The bounce_return_message and bounce_return_body options were not being
1260 honoured for bounces generated during the reception of non-SMTP messages.
1261 In particular, this applied to messages rejected by the ACL. This bug has
1262 been fixed. However, if bounce_return_message is true and bounce_return_
1263 body is false, the headers that are returned for a non-SMTP message
1264 include only those that have been read before the error was detected.
1265 (In the case of an ACL rejection, they have all been read.)
1266
6b31b150
PH
1267PH/69 The HTML version of the specification is now built in a directory called
1268 spec_html instead of spec.html, because the latter looks like a path with
1269 a MIME-type, and this confuses some software.
1270
1271PH/70 Catch two compiler warnings in sieve.c.
1272
d515a917
PH
1273PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1274 function verify_get_ident() calls ip_connect() to connect a socket, but
1275 if the "connect()" function timed out, ip_connect() used to close the
1276 socket. However, verify_get_ident() also closes the socket later, and in
1277 between Exim writes to the log, which may get opened at this point. When
1278 the socket was closed in ip_connect(), the log could get the same file
1279 descriptor number as the socket. This naturally causes chaos. The fix is
1280 not to close the socket in ip_connect(); the socket should be closed by
1281 the function that creates it. There was only one place in the code where
1282 this was missing, in the iplookup router, which I don't think anybody now
1283 uses, but I've fixed it anyway.
1284
9b8fadde
PH
1285PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1286 well as to direct DNS lookups. Otherwise the handling of names in host
1287 lists is inconsistent and therefore confusing.
1288
214e2000 1289
5de37277
PH
1290Exim version 4.60
1291-----------------
1292
cc38ddbf
PH
1293PH/01 Two changes to the default runtime configuration:
1294
1295 (1) Move the checks for relay_from_hosts and authenticated clients from
1296 after to before the (commented out) DNS black list checks.
1297
1298 (2) Add control=submission to the relay_from_hosts and authenticated
1299 clients checks, on the grounds that messages accepted by these
1300 statements are most likely to be submissions.
5de37277 1301
72fdd6ae
PH
1302PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1303
1304 (1) Generate an error if the third argument for the ${prvs expansion is
1305 not a single digit.
1306
1307 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1308 string.
1309
1310 (3) Reset the variables that are obtained from the first argument of
1311 ${prvscheck and used in the second argument before leaving the code,
1312 because their memory is reclaimed, so using them afterwards may do
1313 silly things.
1314
1315 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1316 one (it's much easier than Tom thought :-).
1317
1318 (5) Because of (4), we can now allow for the use of $prvscheck_result
1319 inside the third argument.
cb9328de 1320
cb741023
PH
1321PH/03 For some reason, the default setting of PATH when running a command from
1322 a pipe transport was just "/usr/bin". I have changed it to
1323 "/bin:/usr/bin".
1324
f174f16e
PH
1325PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1326 anything to be listed in the output from -bV.
b2f5a032 1327
c25242d7
PH
1328PH/05 When a filter generated an autoreply, the entire To: header line was
1329 quoted in the delivery log line, like this:
1330
1331 => >A.N.Other <ano@some.domain> <original@ddress> ...
1332
1333 This has been changed so that it extracts the operative address. There
1334 may be more than one such address. If so, they are comma-separated, like
1335 this:
1336
1337 => >ano@some.domain,ona@other.domain <original@ddress> ...
1338
82c19f95
PH
1339PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1340 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1341 not being looked up in the rDNS to get a host name, Exim was showing the
1342 IP address twice in Received: lines, even though the IP addresses were
1343 identical. For example:
1344
1345 Received: from [1.2.3.4] (helo=[1.2.3.4])
1346
1347 However, if the real host name was known, it was omitting the HELO data
1348 if it matched the actual IP address. This has been tidied up so that it
1349 doesn't show the same IP address twice.
1350
d7ffbc12
PH
1351PH/07 When both +timestamp and +memory debugging was on, the value given by
1352 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1353 called by the debug printing, thereby overwriting the timestamp buffer.
1354 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1355
9f526266
PH
1356PH/08 When the original message was included in an autoreply transport, it
1357 always said "this is a copy of the message, including all the headers",
1358 even if body_only or headers_only was set. It now gives an appropriate
1359 message.
1360
87fcc8b9
PH
1361PH/09 Applied a patch from the Sieve maintainer which:
1362
1363 o fixes some comments
1364 o adds the (disabled) notify extension core
1365 o adds some debug output for the result of if/elsif tests
1366 o points to the current vacation draft in the documentation
1367 and documents the missing references header update
1368
1369 and most important:
1370
1371 o fixes a bug in processing the envelope test (when testing
1372 multiple envelope elements, the last element determinted the
1373 result)
1374
456682f5
PH
1375PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1376 Electronic Mail") by including:
1377
1378 Auto-submitted: auto-generated
1379
1380 in the messages that it generates (bounce messages and others, such as
1381 warnings). In the case of bounce messages for non-SMTP mesages, there was
1382 also a typo: it was using "Auto_submitted" (underscore instead of
1383 hyphen). Since every message generated by Exim is necessarily in response
1384 to another message, thes have all been changed to:
1385
1386 Auto-Submitted: auto-replied
1387
1388 in accordance with these statements in the RFC:
1389
1390 The auto-replied keyword:
1391
1392 - SHOULD be used on messages sent in direct response to another
1393 message by an automatic process,
1394
1395 - MUST NOT be used on manually-generated messages,
1396
1397 - MAY be used on Delivery Status Notifications (DSNs) and Message
1398 Disposition Notifications (MDNs),
1399
1400 - MUST NOT be used on messages generated by automatic or periodic
1401 processes, except for messages which are automatic responses to
1402 other messages.
1403
3e46c1aa
PH
1404PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1405 to the default Received: header definition.
456682f5 1406
49826d12
PH
1407PH/12 Added log selector acl_warn_skipped (default on).
1408
eba0c039
PH
1409PH/13 After a successful wildlsearch lookup, discard the values of numeric
1410 variables because (a) they are in the wrong storage pool and (b) even if
1411 they were copied, it wouldn't work properly because of the caching.
1412
a0d6ba8a
PH
1413PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1414 checking when decoding. Apparently there are clients that generate
1415 overlong encoded strings. Why am I not surprised?
1416
f0917727
PH
1417PH/15 If the first argument of "${if match_address" was not empty, but did not
1418 contain an "@" character, Exim crashed. Now it writes a panic log message
1419 and treats the condition as false.
1420
096fee00
PH
1421PH/16 In autoreply, treat an empty string for "once" the same as unset.
1422
024bd3c2
PH
1423PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1424 extension "envelope-auth". The code is finished and in agreement with
1425 other implementations, but there is no documentation so far and in fact,
1426 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1427 not changing the active code.
1428
1429 Print executed "if" and "elsif" statements when debugging is used. This
1430 helps a great deal to understand what a filter does.
1431
1432 Document more things not specified clearly in RFC3028. I had all this
1433 sorted out, when out of a sudden new issues came to my mind. Oops."
1434
df199fec
PH
1435PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1436 (Bugzilla #53).
1437
d27f1df3
PH
1438PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1439 canonical form (as documented). However, after a host name lookup from
1440 the IP address, check_host() was doing a simple string comparison with
1441 addresses acquired from the DNS when checking that the found name did
1442 have the original IP as one of its addresses. Since any found IPv6
1443 addresses are likely to be in abbreviated form, the comparison could
1444 fail. Luckily, there already exists a function for doing the comparison
1445 by converting both addresses to binary, so now that is used instead of
1446 the text comparison.
1447
96776534
PH
1448PH/20 There was another similar case to PH/19, when a complete host name was
1449 given in a host list; looking up its IP address could give an abbreviated
1450 form, whereas the current host's name might or might not be abbreviated.
1451 The same fix has been applied.
1452
5de37277 1453
9a799bc0
PH
1454Exim version 4.54
1455-----------------
1456
1457PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1458 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1459 It now does.
1460
99a4b039
PH
1461PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1462 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1463
1464PH/03 Typo: missing ".o" in src/pcre/Makefile.
1465
4b233853
PH
1466PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1467 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1468 Also, for "Auto-Submitted", treat anything other than "no" as
1469 non-personal, in accordance with RFC 3834. (Previously it treated
1470 anything starting "auto-" as non-personal.)
1471
8857ccfd
PH
1472TF/01 The control=submission/name=... option had a problem with syntax
1473 errors if the name included a slash character. The /name= option
1474 now slurps the rest of the string, so it can include any characters
1475 but it must come last in the list of options (after /sender_retain
1476 or /domain=).
1477
433a2980
PH
1478PH/05 Some modifications to the interface to the fake nameserver for the new
1479 testing suite.
1480
3e46c1aa 1481
9a799bc0 1482
e3a311ba
TK
1483Exim version 4.53
1484-----------------
1485
1486TK/01 Added the "success_on_redirect" address verification option. See
1487 NewStuff for rationale and an example.
1488
13b685f9
PH
1489PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1490
395ff96d
PH
1491PH/02 Patch to exigrep to allow it to work on syslog lines.
1492
5b68f6e4
PH
1493PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1494 fread() to skip over the body file's header line, because in Cygwin the
1495 header line is locked and is inaccessible.
1496
1ab52c69
PH
1497PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1498 co-exist for some time) to make it clear that it is the Exim ID that is
1499 referenced, not the Message-ID: header line.
1500
b07e6aa3
PH
1501PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1502 string_format() function, because snprintf() does not exist on all
1503 operating systems.
1504
254e032f
PH
1505PH/06 The use of forbid_filter_existstest now also locks out the use of the
1506 ${stat: expansion item.
1507
3af76a81
PH
1508PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1509 protocol synchronization error", to keep the pedants happy.
1510
2548ba04
PH
1511PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1512 well as for IRIX systems, when gcc is being used. See the host.c source
1513 file for comments.
1514
b6c6011d
PH
1515PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1516
cf39cf57
PH
1517PH/10 Named domain lists were not working if used in a queue_smtp_domains
1518 setting.
1519
f1513293
PH
1520PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1521 transport and to the smtp transport in LMTP mode.
1522
727549a4
PH
1523TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1524
af46795e
PH
1525PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1526 run a filter in a subprocess. This could lead to confusion in subsequent
1527 lookups in the parent process. There should also be a search_tidyup() at
1528 the end of the subprocess.
1529
d7b47fd0
PH
1530PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1531 only if the host matched helo_try_verify_hosts, which caused the
1532 verification to occur when the EHLO/HELO command was issued. The ACL just
1533 tested the remembered result. Now, if a previous verification attempt has
1534 not happened, "verify = helo" does it there and then.
1535
ee744174
JJ
1536JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1537
b582ab87
PH
1538TK/03 Fix log output including CR from clamd.
1539
41a13e0a
PH
1540PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1541 exist provoked a memory error which could cause a segfault.
1542
f625cc5a
PH
1543PH/15 Installed PCRE 6.2
1544
1545PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1546
21f7af35
PH
1547PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1548 of the problem. Specifically, suggested +O2 rather than +O1 for the
1549 HP-UX compiler.
1550
31480e42
PH
1551PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1552
2d280592
PH
1553PH/20 If a delivery was routed to a non-standard port by means of an SRV
1554 record, the port was not correctly logged when the outgoing_port log
1555 selector was set (it logged the transort's default port).
1556
7cd1141b
PH
1557PH/21 Added support for host-specific ports to manualroute, queryprogram,
1558 fallback_hosts, and "hosts" in the smtp transport.
1559
1560PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1561 host errors such as "Connection refused".
1562
750af86e
PH
1563PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1564 authentication with radiusclient 0.4.9:
1565
1566 - Error returned from rc_read_config was caught wrongly
1567 - Username/password not passed on to radius server due to wrong length.
1568
1569 The presumption is that some radiusclient API changes for 4.51/PH/17
1570 were not taken care of correctly. The code is still untested by me (my
1571 Linux distribution still has 0.3.2 of radiusclient), but it was
1572 contributed by a Radius user.
1573
1574PH/24 When doing a callout, the value of $domain wasn't set correctly when
1575 expanding the "port" option of the smtp transport.
1576
4304270b
TK
1577TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1578 while reading a MIME header. Thanks to Tom Hughes for a patch.
1579
750af86e
PH
1580PH/24 Include config.h inside local_scan.h so that configuration settings are
1581 available.
1582
64ffc24f
PH
1583PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1584 that in an ACL for RCPT (for example), you can examine exactly what was
1585 received.
1586
5dd9625b
PH
1587PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1588 commands, but it was not correctly comparing the address with the actual
1589 client host address. Thus, it would show the EHLO address in Received:
1590 header lines when this was not necessary.
1591
5591031b
PH
1592PH/27 Added the % operator to ${eval:}.
1593
ba18e66a
PH
1594PH/28 Exim tries to create and chdir to its spool directory when it starts;
1595 it should be ignoring failures (because with -C, for example, it has lost
1596 privilege). It wasn't ignoring creation failures other than "already
1597 exists".
1598
9cec981f
PH
1599PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1600 -bV or -d is used.
1601
aa2b5c79
PH
1602PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1603 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1604 too many continuations, the temporary file was not being removed, and the
1605 return code was incorrect.
aa2b5c79 1606
48a53b7f
PH
1607PH/31 Missing "BOOL" in function definition in filtertest.c.
1608
1c59d63b
PH
1609PH/32 Applied Sieve patches from the maintainer.
1610
671012da
TK
1611TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1612
1509d3a8
PH
1613PH/33 Added "verify = not_blind".
1614
1615PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1616 Local/Makefile (with some defaults set). These are used in built scripts
1617 such as exicyclog, but they have never been used in the exim_install
1618 script (though there are many overriding facilities there). I have
1619 arranged that the exim_install script now takes note of these two
1620 settings.
1621
1622PH/35 Installed configuration files for Dragonfly.
1623
2fe1a124
PH
1624PH/36 When a locally submitted message by a trusted user did not contain a
1625 From: header, and the sender address was obtained from -f or from an SMTP
1626 MAIL command, and the trusted user did not use -F to supply a sender
1627 name, $originator_name was incorrectly used when constructing a From:
1628 header. Furthermore, $originator_name was used for submission mode
1629 messages from external hosts without From: headers in a similar way,
1630 which is clearly wrong.
1631
8800895a
PH
1632PH/37 Added control=suppress_local_fixups.
1633
ccfdb010
PH
1634PH/38 When log_selector = +received_sender was set, and the addition of the
1635 sender made the log line's construction buffer exactly full, or one byte
1636 less than full, an overflow happened when the terminating "\n" was
1637 subsequently added.
1638
1130bfb0
PH
1639PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1640 when the result of a list match is failure because a DNS lookup failed.
1641
ebcb507f
PH
1642PH/40 RM_COMMAND is now used in the building process.
1643
c35e155c
PH
1644PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1645 the "build-* directories that it finds.
1646
95d1f782
PH
1647PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1648 address in a domain literal was a prefix of an interface address.
1649
fd6de02e
PH
1650PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1651 when verifying a sender address, unless rewrite_headers is false.
1652
58de37c5
PH
1653PH/44 Wrote a long comment about why errors_to addresses are verified as
1654 recipients, not senders.
1655
261cf466
TF
1656TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1657 the ratelimit ACL was added.
1658
3ee512ff
PH
1659PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1660
e08c430f
PH
1661PH/46 Added extra information about PostgreSQL errors to the error string.
1662
bef5a11f
PH
1663PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1664 avoiding the need to install special zones in a real server. This is
1665 backwards compatible; if it can't find the fake resolver, it drops back.
1666 Thus, both old and new test suites can be run.
1667
7546de58
TF
1668TF/02 Added util/ratelimit.pl
1669
e5d5a95f
TF
1670TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1671 clock is set back in time.
1672
2e88a017
TF
1673TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1674 Candler <B.Candler@pobox.com>.
1675
a5f65aa4
TF
1676TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1677 OK for addresses that are the result of redirections.
1678
e7726cbf
PH
1679PH/48 A number of further additions for the benefit of the new test suite,
1680 including a fake gethostbyname() that interfaces to the fake DNS resolver
1681 (see PH/47 above).
1682
a7fdad5b
TF
1683TF/06 The fix for widen_domains has also been applied to qualify_single and
1684 search_parents which are the other dnslookup options that can cause
1685 header rewrites.
1686
6af56900
PH
1687PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1688 type ("H").
1689
0925ede6
PH
1690PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1691
66afa403
TF
1692TF/07 Exim produced the error message "an SRV record indicated no SMTP
1693 service" if it encountered an MX record with an empty target hostname.
1694 The message is now "an MX or SRV record indicated no SMTP service".
1695
0154e85a
TF
1696TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1697 if the DNS of the sending site is misconfigured. This is quite a
1698 common situation. This change restores the behaviour of treating a
1699 helo verification defer as a failure.
1700
16f12c76
PH
1701PH/51 If self=fail was set on a router, the bounce message did not include the
1702 actual error message.
1703
bbe902f0 1704
e5a9dba6
PH
1705Exim version 4.52
1706-----------------
1707
1708TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1709
22c3b60b
PH
1710PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1711 command itself ended in error, the underlying message about the transport
1712 filter timeout was being overwritten with the pipe command error. Now the
1713 underlying error message should be appended to the second error message.
1714
06a9b4b5
PH
1715TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1716
c1ac6996
PH
1717PH/02 Reduce the amount of output that "make" produces by default. Full output
1718 can still be requested.
1719
9c7a242c
PH
1720PH/03 The warning log line about a condition test deferring for a "warn" verb
1721 was being output only once per connection, rather than after each
1722 occurrence (because it was using the same function as for successful
1723 "warn" verbs). This seems wrong, so I have changed it.
1724
87ba3f5f
PH
1725TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1726 it should not have, which might have caused a crash in the right
1727 circumstances, but probably never did.
1728
1729PH/04 Installed a modified version of Tony Finch's patch to make submission
1730 mode fix the return path as well as the Sender: header line, and to
1731 add a /name= option so that you can make the user's friendly name appear
1732 in the header line.
1733
29aba418
TF
1734TF/03 Added the control = fakedefer ACL modifier.
1735
fe0dab11
TF
1736TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1737 Mark Lowes for thorough testing.
870f6ba8 1738
11d337a4
TK
1739TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1740
1741TK/03 Merged latest SRS patch from Miles Wilton.
1742
415c8f3b
PH
1743PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1744 with the definition in sysexits.h (which is #included earlier).
1745 Fortunately, Exim does not actually use EX_OK. The code used to try to
1746 preserve the sysexits.h value, by assumimg that macro definitions were
1747 scanned for macro replacements. I have been disabused of this notion,
1748 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1749
958541e9
PH
1750PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1751 in the smtp transport. When a block could not be written in a single
1752 write() function, the timeout was being re-applied to each part-write.
1753 This seems wrong - if the receiver was accepting one byte at a time it
1754 would take for ever. The timeout is now adjusted when this happens. It
1755 doesn't have to be particularly precise.
1756
c206415f
TK
1757TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1758 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1759
2a4be8f9
PH
1760PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1761 without a domain if the check to <postmaster@domain> fails.
1762
1cba11c5
SC
1763SC/01 Eximstats: added -xls and the ability to specify output files
1764 (patch written by Frank Heydlauf).
1765
1766SC/02 Eximstats: use FileHandles for outputing results.
1767
1768SC/03 Eximstats: allow any combination of xls, txt, and html output.
1769
1770SC/04 Eximstats: fixed display of large numbers with -nvr option
1771
1772SC/05 Eximstats: fixed merging of reports with empty tables.
1773
1774SC/06 Eximstats: added the -include_original_destination flag
1775
1776SC/07 Eximstats: removed tabs and trailing whitespace.
1777
1005d00e
TK
1778TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1779
1780TK/06 MBOX spool code: Add real "From " MBOX separator line
1781 so the .eml file is really in mbox format (even though
1782 most programs do not really care). Patch from Alex Miller.
1783
1784TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1785 The latter is generated from $received_to and is only set if the
1786 message has one envelope recipient. SA can use these headers,
1787 obviously out-of-the-box. Patch from Alex Miller.
1788
9b4768fa
PH
1789PH/08 The ${def test on a variable was returning false if the variable's
1790 value was "0", contrary to what the specification has always said!
1791 The result should be true unless the variable is empty.
1792
1793PH/09 The syntax error of a character other than { following "${if
1794 def:variable_name" (after optional whitespace) was not being diagnosed.
1795 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1796 accidental colon was present, for example, could give incorrect results.
1797
0d7eb84a
PH
1798PH/10 Tidied the code in a number of places where the st_size field of a stat()
1799 result is used (not including appendfile, where other changes are about
1800 to be made).
1801
1802PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1803 This involved changing a lot of size variables from int to off_t. It
1804 should work with maildirs and everything.
1805
40727bee
TK
1806TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1807 spamd dying while we are connected to it.
1808
554d2369
TF
1809TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1810 <jgh@wizmail.org>
1811
1f922db1
PH
1812PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1813 function for BDB 4.3.
1814
ef213c3b
PH
1815PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1816
8ac170f3
PH
1817PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1818 the sources for PCRE have been re-arranged and more files are now
1819 involved.
1820
b1c749bb
PH
1821PH/15 The code I had for printing potentially long long variables in PH/11
1822 above was not the best (it lost precision). The length of off_t variables
1823 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1824 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1825 to be "long long int" or "long int". This is needed for the internal
1826 formatting function string_vformat().
b1c749bb 1827
4aac9b49
PH
1828PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1829 the configuration file to be ":syslog", then the script "guesses" where
1830 the logs files are, rather than using the compiled in default. In our
1831 case the guess is not the same as the compiled default, so the script
1832 suddenly stopped working when I started to use syslog. The patch checks
1833 to see if log_file_path is "". If so, it attempts to read it from exim
1834 with no configuration file to get the compiled in version, before it
1835 falls back to the previous guessing code."
1836
294520c8
TK
1837TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1838 implementing BATV in an Exim configuration. See NewStuff for the gory
1839 details.
1840
5bd022fe
PH
1841PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1842 Makefile that are specific to HP-UX.
1843
90e9ce59
PH
1844PH/18 If the "use_postmaster" option was set for a recipient callout together
1845 with the "random" option, the postmaster address was used as the MAIL
1846 FROM address for the random test, but not for the subsequent recipient
1847 test. It is now used for both.
1848
5ea81592
PH
1849PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1850 patch removes a few documentation additions to RFC 3028, because the
1851 latest draft now contains them. It adds the new en;ascii-case comparator
1852 and a new error check for 8bit text in MIME parts. Comparator and
1853 require names are now matched exactly. I enabled the subaddress
1854 extension, but it is not well tested yet (read: it works for me)."
1855
c6c2dc1d
PH
1856PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1857 rework some of the code of TK/09 above to avoid the hardwired use of
1858 "%lld" and "long long". Replaced the call to snprintf() with a call to
1859 string_vformat().
1860
fffffe4c
PH
1861PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1862 records point to non-existent hosts", "retry timeout exceeded", and
1863 "retry time not reached for any host after a long failure period".
ca02eafb 1864
9a26b6b2
PH
1865PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1866 experimental DomainKeys support:
1867
1868 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1869 (2) On an error such as an illegally used "control", the wrong name for
1870 the control was given.
1871
1872 These problems did NOT occur unless DomainKeys support was compiled.
1873
4aee0225
PH
1874PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1875
32d668a5
PH
1876PH/24 Added ${if match_ip condition.
1877
8187c3f3
PH
1878PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1879 databases so that it will be absolutely obvious if a crash occurs in the
1880 DB library. This is a regular occurrence (often caused by mis-matched
1881 db.h files).
1882
ff790e47 1883PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1884 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1885 picked up on a user's system that detects such things. There doesn't seem
1886 to be a gcc warning option for this - only an attribute that has to be
1887 put on the function's prototype. It seems that in Fedora Core 4 they have
1888 set this on a number of new functions. No doubt there will be more in due
1889 course.
ff790e47 1890
5417f6d1
PH
1891PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1892 specify a transport. However, if an address that was verified by such a
1893 router was the subject of a callout, Exim crashed because it tried to
1894 read the rcpt_include_affixes from the non-existent transport. Now it
1895 just assumes that the setting of that option is false. This bug was
1896 introduced by 4.51/PH/31.
1897
59cf8544
PH
1898PH/28 Changed -d+all to exclude +memory, because that information is very
1899 rarely of interest, but it makes the output a lot bigger. People tend to
1900 do -d+all out of habit.
1901
e7ad8a65
PH
1902PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1903 code in os-type was giving problems when libc.so lives in lib64, like on
1904 x86_64 Fedora Core.
1905
ade42478
PH
1906PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1907 aren't the modern standard, and it seems that some systems' include files
1908 don't always have them. Exim was already checking for some of the newer
1909 ones like T_AAAA, and defining it itself. I've added checks for all the
1910 record types that Exim uses.
1911
182ad5cf
PH
1912PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1913 not automatically generating a new one, as it is supposed to. This
1914 prevented TLS from working. If the file did exist, but contained invalid
1915 data, a new version was generated, as expected. It was only the case of a
1916 non-existent file that was broken.
1917
b0d9fc80
TK
1918TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1919 with a change in libdomainkeys > 0.64.
1920
1921TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1922 from DNS. If the selector record carries the flag, it now has
1923 precedence over the domain-wide flag.
1924
1925TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1926
47c7a64a
PH
1927PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1928 the use of a port name that isn't defined in /etc/services) occurred, the
1929 message was deferred as in a normal delivery, and thus remained on the
1930 spool, instead of being failed because of the mua_wrapper setting. This
1931 is now fixed, and I tidied up some of the mua_wrapper messages at the
1932 same time.
1933
a388bce4
SC
1934SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1935 the messages in a hash of arrays rather than using individual hashes.
1936 This is a bit cleaner and results in dramatic memory savings, albeit
1937 at a slight CPU cost.
1938
1939SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1940 as requested by Marc Sherman.
1941
1942SC/10 Eximstats: added histograms for user specified patterns as requested
1943 by Marc Sherman.
1944
0793e4ed
SC
1945SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1946
c58b88df
PH
1947PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1948 fopen() in the content-scanning modules that did not already have it.
1949
e7ad8a65 1950
7982096b
PH
1951Exim version 4.51
1952-----------------
1953
1a46a8c5
PH
1954TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1955 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1956
2f079f46 1957TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1958
1959TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1960
1961PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1962 to test Sieve filters that use "vacation".
1963
1964PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1965 that changes the way the GnuTLS parameters are stored in the cache file.
1966 The new format can be generated externally. For backward compatibility,
1967 if the data in the cache doesn't make sense, Exim assumes it has read an
1968 old-format file, and it generates new data and writes a new file. This
1969 means that you can't go back to an older release without removing the
1970 file.
1971
1972PH/03 A redirect router that has both "unseen" and "one_time" set does not
1973 work if there are any delivery delays because "one_time" forces the
1974 parent to be marked "delivered", so its unseen clone is never tried
1975 again. For this reason, Exim now forbids the simultaneous setting of
1976 these two options.
1977
1978PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1979 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1980 entry if you want to know the details. The fix, however, neglected to
1981 consider the case when local delivery batching is involved. The test for
1982 "previously delivered" was not happening when checking to see if an
1983 address could be batched with a previous (undelivered) one; under
1984 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1985 address.
1a46a8c5
PH
1986
1987PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1988 in its include files, and this causes problems building Exim.
1989
1990PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1991 header_syntax) but Exim was just ignoring anything given after a slash.
1992 In particular, this caused confusion with an attempt to use "verify =
1993 reverse_host_lookup/defer_ok". An error is now given when options are
1994 supplied for verify items that do not have them. (Maybe reverse_host_
1995 lookup should have a defer_ok option, but that's a different point.)
1996
1997PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1998 defined by RFC 821) to 2048, because there were problems with some AUTH
1999 commands, and RFC 1869 says the size should be increased for extended
2000 SMTP commands that take arguments.
2001
2002PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
2003 Finch).
2004
2005PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
2006 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 2007
49c2d5ea
PH
2008PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
2009 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
2010 whatever). Otherwise the password may appear in the log. Following change
2011 PH/42 below, there is no longer a chance of it appearing in a bounce
2012 message.
49c2d5ea 2013
bf759a8b
PH
2014PH/11 Installed exipick version 20050225.0 from John Jetmore.
2015
83364d30
PH
2016PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2017 of its addresses was ever tried. (Bugzilla bug #2.)
2018
7999bbd7
PH
2019PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2020 the result incorrectly in the debug output. (It correctly added a newline
2021 to what was transported.)
2022
7dbf77c9
PH
2023TF/01 Added $received_time.
2024
74e0617f
PH
2025PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2026 commented out examples of how to interface to a virus scanner and to
2027 SpamAssassin. Also added commented examples of av_scanner and
2028 spamd_address settings.
2029
2f079f46
PH
2030PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2031 and controls are allowed in which ACLs. There were a couple of minor
2032 errors. Some of the entries in the conditions table (which is a table of
2033 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2034 negation of where the condition IS allowed.
2035
8c841523
PH
2036PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2037
7766a4f0
PH
2038PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2039 header file does not have a version number, so I've had to invent a new
2040 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2041 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2042 radiusclient), but it was contributed by a Radius user.
2043
8b417f2c
PH
2044PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2045 files or directories, for OpenSSL.
2046
901f42cb
PH
2047PH/19 When an Exim process that is running as root has to create an Exim log
2048 file, it does so in a subprocess that runs as exim:exim so as to get the
2049 ownership right at creation (otherwise, other Exim processes might see
2050 the file with the wrong ownership). There was no test for failure of this
2051 fork() call, which would lead to the process getting stuck as it waited
2052 for a non-existent subprocess. Forks do occasionally fail when resources
2053 run out. I reviewed all the other calls to fork(); they all seem to check
2054 for failure.
2055
f9b9210e
PH
2056PH/20 When checking for unexpected SMTP input at connect time (before writing
2057 the banner), Exim was not dealing correctly with a non-positive return
2058 from the read() function. If the client had disconnected by this time,
2059 the result was a log entry for a synchronization error with an empty
2060 string after "input=" when read() returned zero. If read() returned -1
2061 (an event I could not check), uninitialized data bytes were printed.
2062 There were reports of junk text (parts of files, etc) appearing after
2063 "input=".
2064
54cdb463
PH
2065PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2066
cf00dad6
PH
2067PH/22 Added support for macro redefinition, and (re)definition in between
2068 driver and ACL definitions.
2069
acb1b346
PH
2070PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2071 forgetting to use the resulting value; it was using the unexpanded value.
2072
c5ddb310
PH
2073PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2074 hadn't been configured. The fix is from Juergen Kreileder, who
2075 understands it better than I do:
2076
2077 "Here's what I see happening with three configured cyrus_sasl
2078 authenticators configured (plain, login, cram-md5):
2079
2080 On startup auth_cyrus_sasl_init() gets called for each of these.
2081 This means three calls to sasl_listmech() without a specified mech_list.
2082 => SASL tests which mechs of all available mechs actually work
2083 => three warnings about OTP not working
2084 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2085
2086 With the patch, sasl_listmech() also gets called three times. But now
2087 SASL's mech_list option is set to the server_mech specified in the the
2088 authenticator. Or in other words, the answer from sasl_listmech()
2089 gets limited to just the mech you're testing for (which is different
2090 for each call.)
2091 => the return list contains just 'plain' or 'login', 'cram-md5' or
2092 nothing depending on the value of ob->server_mech.
2093
2094 I've just tested the patch: Authentication still works fine,
2095 unavailable mechs specified in the exim configuration are still
2096 caught, and the auth.log warnings about OTP are gone."
2097
31619da6
PH
2098PH/25 When debugging is enabled, the contents of the command line are added
2099 to the debugging output, even when log_selector=+arguments is not
2100 specified.
2101
bebaf0fc
PH
2102PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2103 answer is "GNU", and only if the return is "GNU/something" is the answer
2104 "Linux".
2105
475fe28a
PH
2106PH/27 $acl_verify_message is now set immediately after the failure of a
2107 verification in an ACL, and so is available in subsequent modifiers. In
2108 particular, the message can be preserved by coding like this:
2109
2110 warn !verify = sender
2111 set acl_m0 = $acl_verify_message
2112
2113 Previously, $acl_verify_message was set only while expanding "message"
2114 and "log_message" when a very denied access.
2115
7e8bec7a
PH
2116PH/28 Modified OS/os.c-Linux with
2117
2118 -#ifndef OS_LOAD_AVERAGE
2119 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2120
2121 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2122 nomenclature these days.)
2123
e4a89c47
PH
2124PH/29 Installed patch from the Sieve maintainer that adds the options
2125 sieve_useraddress and sieve_subaddress to the redirect router.
2126
5ca2a9a1
PH
2127PH/30 In these circumstances:
2128 . Two addresses routed to the same list of hosts;
2129 . First host does not offer TLS;
2130 . First host accepts first address;
2131 . First host gives temporary error to second address;
2132 . Second host offers TLS and a TLS session is established;
2133 . Second host accepts second address.
2134 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2135 and peerdn, if requested) that were in fact used only for the second
2136 address.
7e8bec7a 2137
c688b954
PH
2138PH/31 When doing a callout as part of verifying an address, Exim was not paying
2139 attention to any local part prefix or suffix that was matched by the
2140 router that accepted the address. It now behaves in the same way as it
2141 does for delivery: the affixes are removed from the local part unless
2142 rcpt_include_affixes is set on the transport.
2143
fed77020
PH
2144PH/32 Add the sender address, as F=<...>, to the log line when logging a
2145 timeout during the DATA phase of an incoming message.
2146
7fe1560f
PH
2147PH/33 Sieve envelope tests were broken for match types other than :is. I have
2148 applied a patch sanctioned by the Sieve maintainer.
c688b954 2149
ebb6e6d5
PH
2150PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2151 the uid or gid is negative. A case of a negative gid caused this to be
2152 noticed. The fix allows for either to be negative.
2153
9c4e8f60
PH
2154PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2155 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2156 overlooked.
2157
2158PH/36 The change PH/12 above was broken. Fixed it.
2159
d7174846
PH
2160PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2161 the grounds that routing the same address twice would always produce the
2162 same answer. This might have been true once, but it is certainly no
2163 longer true now. Routing a child address may depend on the previous
2164 routing that produced that child. Some complicated redirection strategies
2165 went wrong when messages had multiple recipients, and made Exim's
2166 behaviour dependent on the order in which the addresses were given.
2167
2168 I have moved the duplicate checking until after the routing is complete.
2169 Exim scans the addresses that are assigned to local and remote
2170 transports, and removes any duplicates. This means that more work will be
2171 done, as duplicates will always all be routed, but duplicates are
2172 presumably rare, so I don't expect this is of any significance.
2173
2174 For deliveries to pipes, files, and autoreplies, the duplicate checking
2175 still happens during the routing process, since they are not going to be
2176 routed further.
2177
cfe75fc3
PH
2178PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2179 It corrects a timeout issue with spamd. This is Ian's comment: "The
2180 background is that sometimes spamd either never reads data from a
2181 connection it has accepted, or it never writes response data. The exiscan
2182 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2183 blindly assumes that writes won't block so it may never time out."
2184
be22d70e
PH
2185PH/39 Allow G after quota size as well as K and M.
2186
0612b098
PH
2187PH/40 The value set for $authenticated_id in an authenticator may not contain
2188 binary zeroes or newlines because the value is written to log lines and
2189 to spool files. There was no check on this. Now the value is run through
2190 the string_printing() function so that such characters are converted to
2191 printable escape sequences.
2192
2e0c1448
PH
2193PH/41 $message_linecount is a new variable that contains the total number of
2194 lines in the message. Compare $body_linecount, which is the count for the
2195 body only.
2196
447d236c
PH
2197PH/42 Exim no longer gives details of delivery errors for specific addresses in
2198 bounce and delay warning messages, except in certain special cases, which
2199 are as follows:
2200
2201 (a) An SMTP error message from a remote host;
2202 (b) A message specified in a :fail: redirection;
2203 (c) A message specified in a "fail" command in a system filter;
2204 (d) A message specified in a FAIL return from the queryprogram router;
2205 (e) A message specified by the cannot_route_message router option.
2206
2207 In these cases only, Exim does include the error details in bounce and
2208 warning messages. There are also a few cases where bland messages such
2209 as "unrouteable address" or "local delivery error" are given.
2210
d20976dc
PH
2211PH/43 $value is now also set for the "else" part of a ${run expansion.
2212
f656d135
PH
2213PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2214 being worked on, but at least Exim now implements the latest version to
2215 play with."
2216
2e2a30b4
PH
2217PH/45 In a pipe transport, although a timeout while waiting for the pipe
2218 process to complete was treated as a delivery failure, a timeout while
2219 writing the message to the pipe was logged, but erroneously treated as a
2220 successful delivery. Such timeouts include transport filter timeouts. For
2221 consistency with the overall process timeout, these timeouts are now
2222 treated as errors, giving rise to delivery failures by default. However,
2223 there is now a new Boolean option for the pipe transport called
2224 timeout_defer, which, if set TRUE, converts the failures into defers for
2225 both kinds of timeout. A transport filter timeout is now identified in
2226 the log output.
2227
9176e9f0
PH
2228PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2229 systems where "make" and "gmake" are different, calling "gmake" at top
2230 level broke things. I've arranged for the value of $(MAKE) to be passed
2231 from the Makefile to this script so that it can call the same version of
2232 "make".
2233
7982096b 2234
bbe902f0
PH
2235A note about Exim versions 4.44 and 4.50
2236----------------------------------------
2237
2238Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2239changes of various kinds. As a consequence, a big documentation update was
2240needed. This delayed the release for rather longer than seemed good, especially
2241in the light of a couple of (minor) security issues. Therefore, the changes
2242that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2243release. So 4.44 and 4.50 are in effect two different branches that both start
2244from 4.43.
2245
2246I have left the 4.50 change log unchanged; it contains all the changes since
22474.43. The change log for 4.44 is below; many of its items are identical to
2248those for 4.50. This seems to be the most sensible way to preserve the
2249historical information.
2250
2251
f7b63901 2252Exim version 4.50
495ae4b0
PH
2253-----------------
2254
5fe762f6
PH
2255 1. Minor wording change to the doc/README.SIEVE file.
2256
139059f6 2257 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2258 computation of the current number of files was incorrect.
495ae4b0 2259
7086e875
PH
2260 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2261 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2262 place.
2263
35af9f61
PH
2264 4. Give more explanation in the error message when the command for a transport
2265 filter fails to execute.
2266
b668c215
PH
2267 5. There are several places where Exim runs a non-Exim command in a
2268 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2269 was being done only for the command run by the queryprogram router. It is
2270 now done for all such subprocesses. The other cases are: ${run, transport
2271 filters, and the commands run by the lmtp and pipe transports.
2272
a494b1e1
PH
2273 6. Added CONFIGURE_GROUP build-time option.
2274
2275 7. Some older OS have a limit of 256 on the maximum number of file
2276 descriptors. Exim was using setrlimit() to set 1000 as a large value
2277 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2278 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2279
c5fcb476
PH
2280 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2281 was an oversight, and furthermore, ever since the addition of extra
2282 controls (e.g. 4.43/32), the checks on when to allow different forms of
2283 "control" were broken. There should now be diagnostics for all cases when a
2284 control that does not make sense is encountered.
2285
69358f02
PH
2286 9. Added the /retain_sender option to "control=submission".
2287
5be20824
PH
228810. $recipients is now available in the predata ACL (oversight).
2289
eb2c0248
PH
229011. Tidy the search cache before the fork to do a delivery from a message
2291 received from the command line. Otherwise the child will trigger a lookup
2292 failure and thereby defer the delivery if it tries to use (for example) a
2293 cached ldap connection that the parent has called unbind on.
2294
2a3eea10
PH
229512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2296 of $address_data from the recipient verification was clobbered by the
2297 sender verification.
2298
229913. The value of address_data from a sender verification is now available in
2300 $sender_address_data in subsequent conditions in the ACL statement.
2301
23c7ff99
PH
230214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2303
4deaf07d
PH
230415. Added a new option "connect=<time>" to callout options, to set a different
2305 connection timeout.
2306
926e1192
PH
230716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2308 was its contents. (It was OK if the option was not defined at all.)
2309
650edc6f
PH
231017. A "Completed" log line is now written for messages that are removed from
2311 the spool by the -Mrm option.
2312
2c7db3f5
PH
231318. New variables $sender_verify_failure and $recipient_verify_failure contain
2314 information about exactly what failed.
2315
3d235903
PH
231619. Added -dd to debug only the daemon process.
2317
7c7ad977
PH
231820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2319 handles timeouts, both on the server side and network timeouts. Renamed the
2320 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2321
981756db
PH
232221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2323 It is now set to "smtps".
2324
d4eb88df
PH
232522. $host_address is now set to the target address during the checking of
2326 ignore_target_hosts.
2327
232823. When checking ignore_target_hosts for an ipliteral router, no host name was
2329 being passed; this would have caused $sender_host_name to have been used if
2330 matching the list had actually called for a host name (not very likely,
2331 since this list is usually IP addresses). A host name is now passed as
2332 "[x.x.x.x]".
2333
7d468ab8
PH
233424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2335 code that specifies a non-restarting handler (typically sigaction() in
2336 modern systems) in an attempt to fix a rare and obscure crash bug.
2337
233825. Narrowed the window for a race in the daemon that could cause it to ignore
2339 SIGCHLD signals. This is not a major problem, because they are used only to
2340 wake it up if nothing else does.
2341
62c0818f
PH
234226. A malformed maildirsize file could cause Exim to calculate negative values
2343 for the mailbox size or file count. Odd effects could occur as a result.
2344 The maildirsize information is now recalculated if the size or filecount
2345 end up negative.
2346
26034054
PH
234727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2348 support for a long time. Removed HAVE_SYS_VFS_H.
2349
af66f652
PH
235028. Installed the latest version of exipick from John Jetmore.
2351
90af77f4
PH
235229. In an address list, if the pattern was not a regular expression, an empty
2353 subject address (from a bounce message) matched only if the pattern was an
2354 empty string. Non-empty patterns were not even tested. This was the wrong
2355 because it is perfectly reasonable to use an empty address as part of a
2356 database query. An empty address is now tested by patterns that are
2357 lookups. However, all the other forms of pattern expect the subject to
2358 contain a local part and a domain, and therefore, for them, an empty
2359 address still always fails if the pattern is not itself empty.
2360
d8ef3577
PH
236130. Exim went into a mad DNS loop when attempting to do a callout where the
2362 host was specified on an smtp transport, and looking it up yielded more
2363 than one IP address.
2364
5cb8cbc6
PH
236531. Re-factored the code for checking spool and log partition space into a
2366 function that finds that data and another that does the check. The former
2367 is then used to implement four new variables: $spool_space, $log_space,
2368 $spool_inodes, and $log_inodes.
2369
14702f5b
PH
237032. The RFC2047 encoding function was originally intended for short strings
2371 such as real names; it was not keeping to the 75-character limit for
2372 encoded words that the RFC imposes. It now respects the limit, and
2373 generates multiple encoded words if necessary. To be on the safe side, I
2374 have increased the buffer size for the ${rfc2047: expansion operator from
2375 1024 to 2048 bytes.
2376
063b1e99
PH
237733. It is now permitted to omit both strings after an "if" condition; if the
2378 condition is true, the result is "true". As before, when the second string
2379 is omitted, a false condition yields an empty string. This makes it less
2380 cumbersome to write custom ACL and router conditions.
2381
652e1b65
PH
238234. Failure to deliver a bounce message always caused it to be frozen, even if
2383 there was an errors_to setting on the router. The errors_to setting is now
2384 respected.
2385
6f0c9a4f
PH
238635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2387 canonical form (fully expanded) before being placed in
2388 $sender_host_address.
2389
33397d19
PH
239036. The table in the code that translates DNS record types into text (T_A to
2391 "A" for instance) was missing entries for NS and CNAME. It is just possible
2392 that this could have caused confusion if both these types were looked up
2393 for the same domain, because the text type is used as part of Exim's
2394 per-process caching. But the chance of anyone hitting this buglet seems
2395 very small.
2396
7bb56e1f
PH
239737. The dnsdb lookup has been extended in a number of ways.
2398
2399 (1) There is a new type, "zns", which walks up the domain tree until it
2400 finds some nameserver records. It should be used with care.
2401
ea3bc19b
PH
2402 (2) There is a new type, "mxh", which is like "mx" except that it returns
2403 just the host names, not the priorities.
2404
2405 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2406 looked up. The behaviour when one of the lookups defers can be
2407 controlled by a keyword.
7bb56e1f 2408
ea3bc19b 2409 (4) It is now possible to specify the separator character for use when
7bb56e1f 2410 multiple records are returned.
33397d19 2411
0bcb2a0e
PH
241238. The dnslists ACL condition has been extended: it is now possible to supply
2413 a list of IP addresses and/or domains to be looked up in a particular DNS
2414 domain.
2415
2ac0e484
PH
241639. Added log_selector=+queue_time_overall.
2417
4e1fde53
PH
241840. When running the queue in the test harness, wait just a tad after forking a
2419 delivery process, to get repeatability of debugging output.
2420
de365ded
PH
242141. Include certificate and key file names in error message when GnuTLS fails
2422 to set them up, because the GnuTLS error message doesn't include the name
2423 of the failing file when there is a problem reading it.
2424
f05da2e8
PH
242542. Allow both -bf and -bF in the same test run.
2426
d6453af2
PH
242743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2428
f7b63901
PH
242944. The "Exiscan patch" is now merged into the mainline Exim source.
2430
243145. Sometimes the final signoff response after QUIT could fail to get
2432 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2433 < 0 before doing a fflush(). This bug looks as though it goes back to the
2434 introduction of TLS in release 3.20, but "sometimes" must have been rare
2435 because the tests only now provoked it.
2436
a444213a
PH
243746. Reset the locale to "C" after calling embedded Perl, in case it was changed
2438 (this can affect the format of dates).
2439
0ec020ea
PH
244047. exim_tidydb, when checking for the continued existence of a message for
2441 which it has found a message-specific retry record, was not finding
2442 messages that were in split spool directories. Consequently, it was
2443 deleting retry records that should have stayed in existence.
2444
b1206957
PH
244548. Steve fixed some bugs in eximstats.
2446
244749. The SPA authentication driver was not abandoning authentication and moving
2448 on to the next authenticator when an expansion was forced to fail,
2449 contradicting the general specification for all authenticators. Instead it
2450 was generating a temporary error. It now behaves as specified.
2451
26dd5a95
PH
245250. The default ordering of permitted cipher suites for GnuTLS was pessimal
2453 (the order specifies the preference for clients). The order is now AES256,
2454 AES128, 3DES, ARCFOUR128.
2455
343b2385
PH
245651. Small patch to Sieve code - explicitly set From: when generating an
2457 autoreply.
2458
1c5466b9
PH
245952. Exim crashed if a remote delivery caused a very long error message to be
2460 recorded - for instance if somebody sent an entire SpamAssassin report back
2461 as a large number of 550 error lines. This bug was coincidentally fixed by
2462 increasing the size of one of Exim's internal buffers (big_buffer) that
2463 happened as part of the Exiscan merge. However, to be on the safe side, I
2464 have made the code more robust (and fixed the comments that describe what
2465 is going on).
2466
55ee9ee3
PH
246753. Now that there can be additional text after "Completed" in log lines (if
2468 the queue_time_overall log selector is set), a one-byte patch to exigrep
2469 was needed to allow it to recognize "Completed" as not the last thing in
2470 the line.
2471
d38f8232
PH
247254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2473 patch that reportedly fixes this has been added. I am not expert enough to
2474 create a test for it. This is what the patch creator wrote:
2475
2476 "I found a little strange behaviour of ldap code when working with
2477 Windows 2003 AD Domain, where users was placed in more than one
2478 Organization Units. When I tried to give exim partial DN, the exit code
2479 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2480 But simultaneously result of request was absolutely normal ldap result,
2481 so I produce this patch..."
2482
3295e65b
PH
2483 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2484 REFERENCE, so I have modified the code to exclude the patch when that macro
2485 is not defined.
2486
7102e136
PH
248755. Some experimental protocols are using DNS PTR records for new purposes. The
2488 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2489 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2490 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2491 CAN-2005-0021
7102e136 2492
3ca0ba97
PH
249356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2494
c2bcbe20
PH
249557. Double the size of the debug message buffer (to 2048) so that more of very
2496 long debug lines gets shown.
2497
18ce445d
PH
249858. The exicyclog utility now does better if the number of log files to keep
2499 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2500
1f5b4c3d
PH
250159. Two changes related to the smtp_active_hostname option:
2502
2503 (1) $smtp_active_hostname is now available as a variable.
2504 (2) The default for smtp_banner uses $smtp_active_hostname instead
2505 of $primary_hostname.
2506
b975ba52
PH
250760. The host_aton() function is supposed to be passed a string that is known
2508 to be a valid IP address. However, in the case of IPv6 addresses, it was
2509 not checking this. This is a hostage to fortune. Exim now panics and dies
2510 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2511 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2512 components; fortuitously, this particular loophole had already been fixed
2513 by change 4.50/55 above.
2514
2515 If there are any other similar loopholes, the new check in host_aton()
2516 itself should stop them being exploited. The report I received stated that
2517 data on the command line could provoke the exploit when Exim was running as
2518 exim, but did not say which command line option was involved. All I could
2519 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2520 running as the user.
ea3a6f44 2521 CAN-2005-0021
85b87bc2
PH
2522
252361. There was a buffer overflow vulnerability in the SPA authentication code
2524 (which came originally from the Samba project). I have added a test to the
2525 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2526 CAN-2005-0022
b975ba52 2527
17ffcae7
PH
252862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2529 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2530
d95f9fdb
PH
253163. The daemon start-up calls getloadavg() while still root for those OS that
2532 need the first call to be done as root, but it missed one case: when
2533 deliver_queue_load_max is set with deliver_drop_privilege. This is
2534 necessary for the benefit of the queue runner, because there is no re-exec
2535 when deliver_drop_privilege is set.
2536
86b8287f
PH
253764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2538 This has been fixed.
2539
60dc5e56
PH
254065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2541 was in use, was not putting the data itself into the right store pool;
2542 consequently, it could be overwritten for a subsequent message in the same
2543 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2544 the caching.)
2545
533244af
PH
254666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2547
a5a28604
PH
254867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2549 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2550 the function were treating the return as a boolean value, which happened to
2551 work because 0=false and not-0=true, but is not correct code.
2552
7e634d24
PH
255368. The host_aton() function was not handling scoped IPv6 addresses (those
2554 with, for example, "%eth0" on the end) correctly.
2555
3e11c26b
PH
255669. Fixed some compiler warnings in acl.c for the bitmaps specified with
2557 negated items (that is, ~something) in unsigned ints. Some compilers
2558 apparently mutter when there is no cast.
2559
6729cf78
PH
256070. If an address verification called from an ACL failed, and did not produce a
2561 user-specific message (i.e. there was only a "system" message), nothing was
2562 put in $acl_verify_message. In this situation, it now puts the system
2563 message there.
2564
00f00ca5
PH
256571. Change 4.23/11 added synchronization checking at the start of an SMTP
2566 session; change 4.31/43 added the unwanted input to the log line - except
2567 that it did not do this in the start of session case. It now does.
2568
c9bdd01c
PH
256972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2570 This is wrong and can cause the other end to generate a synchronization
2571 error if it is another Exim or anything else that does the synchronization
2572 check. A QUIT command is no longer sent after a timeout.
2573
d43194df
PH
257473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2575 during host lookups.
2576
fe5b5d0b
PH
257774. The defer_ok option of callout verification was not working if it was used
2578 when verifying addresses in header lines, that is, for this case:
2579
2580 verify = header_sender/callout=defer_ok
2581
76a2d7ba
PH
258275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2583 those file descriptors could be used for SMTP connections. If anything
2584 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2585 could be sent to the SMTP client, causing chaos. The daemon now opens
2586 stdin, stdout, and stderr to /dev/null when it puts itself into the
2587 background.
2588
258976. Arrange for output from Perl's "warn" command to be written to Exim's main
2590 log by default. The user can override this with suitable Perl magic.
2591
04f7d5b9
PH
259277. The use of log_message on a "discard" ACL verb, which is supposed to add to
2593 the log message when discard triggers, was not working for the DATA ACL or
2594 for the non-SMTP ACL.
2595
bc60667e
PH
259678. Error message wording change in sieve.c.
2597
bb6e88ff
PH
259879. If smtp_accept_max_per_host was set, the number of connections could be
2599 restricted to fewer than expected, because the daemon was trying to set up
2600 a new connection before checking whether the processes handling previous
2601 connections had finished. The check for completed processes is now done
2602 earlier. On busy systems, this bug wouldn't be noticed because something
2603 else would have woken the daemon, and it would have reaped the completed
2604 process earlier.
2605
1e70f85b
PH
260680. If a message was submitted locally by a user whose login name contained one
2607 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2608 It caused a spool format error. I have fixed the spool reading code. A
2609 related problem was that the "from" clause in the Received: line became
2610 illegal because of the space(s). It is now covered by ${quote_local_part.
2611
261281. Included the latest eximstats from Steve (adds average sizes to HTML Top
2613 tables).
2614
4e01f9d6
PH
261582. Updated OS/Makefile-AIX as per message from Mike Meredith.
2616
1ee1cef2
PH
261783. Patch from Sieve maintainer to fix unterminated string problem in
2618 "vacation" handling.
2619
6e2b4ccc
PH
262084. Some minor changes to the Linux configuration files to help with other
2621 OS variants using glibc.
2622
8e669ac1
PH
262385. One more patch for Sieve to update vacation handling to latest spec.
2624
495ae4b0 2625
bbe902f0
PH
2626----------------------------------------------------
2627See the note above about the 4.44 and 4.50 releases.
2628----------------------------------------------------
2629
2630
2631Exim version 4.44
2632-----------------
2633
2634 1. Change 4.43/35 introduced a bug that caused file counts to be
2635 incorrectly computed when quota_filecount was set in an appendfile
2636 transport
2637
2638 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2639 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2640 place.
2641
2642 3. Give more explanation in the error message when the command for a transport
2643 filter fails to execute.
2644
2645 4. There are several places where Exim runs a non-Exim command in a
2646 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2647 was being done only for the command run by the queryprogram router. It is
2648 now done for all such subprocesses. The other cases are: ${run, transport
2649 filters, and the commands run by the lmtp and pipe transports.
2650
2651 5. Some older OS have a limit of 256 on the maximum number of file
2652 descriptors. Exim was using setrlimit() to set 1000 as a large value
2653 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2654 systems. I've change it so that if it can't get 1000, it tries for 256.
2655
2656 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2657 was an oversight, and furthermore, ever since the addition of extra
2658 controls (e.g. 4.43/32), the checks on when to allow different forms of
2659 "control" were broken. There should now be diagnostics for all cases when a
2660 control that does not make sense is encountered.
2661
2662 7. $recipients is now available in the predata ACL (oversight).
2663
2664 8. Tidy the search cache before the fork to do a delivery from a message
2665 received from the command line. Otherwise the child will trigger a lookup
2666 failure and thereby defer the delivery if it tries to use (for example) a
2667 cached ldap connection that the parent has called unbind on.
2668
2669 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2670 of $address_data from the recipient verification was clobbered by the
2671 sender verification.
2672
267310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2674 was its contents. (It was OK if the option was not defined at all.)
2675
267611. A "Completed" log line is now written for messages that are removed from
2677 the spool by the -Mrm option.
2678
267912. $host_address is now set to the target address during the checking of
2680 ignore_target_hosts.
2681
268213. When checking ignore_target_hosts for an ipliteral router, no host name was
2683 being passed; this would have caused $sender_host_name to have been used if
2684 matching the list had actually called for a host name (not very likely,
2685 since this list is usually IP addresses). A host name is now passed as
2686 "[x.x.x.x]".
2687
268814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2689 code that specifies a non-restarting handler (typically sigaction() in
2690 modern systems) in an attempt to fix a rare and obscure crash bug.
2691
269215. Narrowed the window for a race in the daemon that could cause it to ignore
2693 SIGCHLD signals. This is not a major problem, because they are used only to
2694 wake it up if nothing else does.
2695
269616. A malformed maildirsize file could cause Exim to calculate negative values
2697 for the mailbox size or file count. Odd effects could occur as a result.
2698 The maildirsize information is now recalculated if the size or filecount
2699 end up negative.
2700
270117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2702 support for a long time. Removed HAVE_SYS_VFS_H.
2703
ea3a6f44 270418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2705
270619. Allow an empty sender to be matched against a lookup in an address list.
2707 Previously the only cases considered were a regular expression, or an
2708 empty pattern.
2709
271020. Exim went into a mad DNS lookup loop when doing a callout where the
2711 host was specified on the transport, if the DNS lookup yielded more than
2712 one IP address.
2713
ea3a6f44
NM
271421. The RFC2047 encoding function was originally intended for short strings
2715 such as real names; it was not keeping to the 75-character limit for
2716 encoded words that the RFC imposes. It now respects the limit, and
2717 generates multiple encoded words if necessary. To be on the safe side, I
2718 have increased the buffer size for the ${rfc2047: expansion operator from
2719 1024 to 2048 bytes.
bbe902f0 2720
ea3a6f44
NM
272122. Failure to deliver a bounce message always caused it to be frozen, even if
2722 there was an errors_to setting on the router. The errors_to setting is now
2723 respected.
bbe902f0
PH
2724
272523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2726 canonical form (fully expanded) before being placed in
2727 $sender_host_address.
2728
272924. Updated eximstats to version 1.33
2730
ea3a6f44
NM
273125. Include certificate and key file names in error message when GnuTLS fails
2732 to set them up, because the GnuTLS error message doesn't include the name
2733 of the failing file when there is a problem reading it.
bbe902f0
PH
2734
273526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2736 As per change 25.
bbe902f0 2737
ea3a6f44
NM
273827. Reset the locale to "C" after calling embedded Perl, in case it was changed
2739 (this can affect the format of dates).
bbe902f0 2740
ea3a6f44
NM
274128. exim_tidydb, when checking for the continued existence of a message for
2742 which it has found a message-specific retry record, was not finding
2743 messages that were in split spool directories. Consequently, it was
2744 deleting retry records that should have stayed in existence.
bbe902f0
PH
2745
274629. eximstats updated to version 1.35
2747 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2748 1.35 - bugfix such that pie charts by volume are generated correctly
2749
ea3a6f44
NM
275030. The SPA authentication driver was not abandoning authentication and moving
2751 on to the next authenticator when an expansion was forced to fail,
2752 contradicting the general specification for all authenticators. Instead it
2753 was generating a temporary error. It now behaves as specified.
bbe902f0 2754
ea3a6f44
NM
275531. The default ordering of permitted cipher suites for GnuTLS was pessimal
2756 (the order specifies the preference for clients). The order is now AES256,
2757 AES128, 3DES, ARCFOUR128.
bbe902f0 2758
ea3a6f44
NM
275931. Small patch to Sieve code - explicitly set From: when generating an
2760 autoreply.
bbe902f0 2761
ea3a6f44
NM
276232. Exim crashed if a remote delivery caused a very long error message to be
2763 recorded - for instance if somebody sent an entire SpamAssassin report back
2764 as a large number of 550 error lines. This bug was coincidentally fixed by
2765 increasing the size of one of Exim's internal buffers (big_buffer) that
2766 happened as part of the Exiscan merge. However, to be on the safe side, I
2767 have made the code more robust (and fixed the comments that describe what
2768 is going on).
bbe902f0 2769
ea3a6f44
NM
277033. Some experimental protocols are using DNS PTR records for new purposes. The
2771 keys for these records are domain names, not reversed IP addresses. The
2772 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2773 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2774 CAN-2005-0021
2775
ea3a6f44
NM
277634. The host_aton() function is supposed to be passed a string that is known
2777 to be a valid IP address. However, in the case of IPv6 addresses, it was
2778 not checking this. This is a hostage to fortune. Exim now panics and dies
2779 if the condition is not met. A case was found where this could be provoked
2780 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2781 components; fortuitously, this particular loophole had already been fixed
2782 by change 4.50/55 or 4.44/33 above.
2783
2784 If there are any other similar loopholes, the new check in host_aton()
2785 itself should stop them being exploited. The report I received stated that
2786 data on the command line could provoke the exploit when Exim was running as
2787 exim, but did not say which command line option was involved. All I could
2788 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2789 running as the user.
bbe902f0
PH
2790 CAN-2005-0021
2791
ea3a6f44
NM
279235. There was a buffer overflow vulnerability in the SPA authentication code
2793 (which came originally from the Samba project). I have added a test to the
2794 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2795 CAN-2005-0022
2796
ea3a6f44
NM
279736. The daemon start-up calls getloadavg() while still root for those OS that
2798 need the first call to be done as root, but it missed one case: when
2799 deliver_queue_load_max is set with deliver_drop_privilege. This is
2800 necessary for the benefit of the queue runner, because there is no re-exec
2801 when deliver_drop_privilege is set.
bbe902f0 2802
ea3a6f44
NM
280337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2804 was in use, was not putting the data itself into the right store pool;
2805 consequently, it could be overwritten for a subsequent message in the same
2806 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2807 the caching.)
bbe902f0 2808
ea3a6f44
NM
280938. Sometimes the final signoff response after QUIT could fail to get
2810 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2811 < 0 before doing a fflush(). This bug looks as though it goes back to the
2812 introduction of TLS in release 3.20, but "sometimes" must have been rare
2813 because the tests only now provoked it.
bbe902f0
PH
2814
2815
495ae4b0
PH
2816Exim version 4.43
2817-----------------
2818
2819 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2820 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2821 Now it returns an integer. A number of calls were still expecting a T/F
2822 return. Fortuitously, in all cases, the tests worked in OK situations,
2823 which is the norm. However, things would have gone wrong on any write
2824 failures on the smtp file descriptor. This function is used when sending
2825 messages over SMTP and also when doing verify callouts.
2826
2827 2. When Exim is called to do synchronous delivery of a locally submitted
2828 message (the -odf or -odi options), it no longer closes stderr before doing
2829 the delivery.
2830
2831 3. Implemented the mua_wrapper option.
2832
2833 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2834
2835 5. Implemented the functions header_remove(), header_testname(),
2836 header_add_at_position(), and receive_remove_recipient(), and exported them
2837 to local_scan().
2838
2839 6. If an ACL "warn" statement specified the addition of headers, Exim already
2840 inserted X-ACL-Warn: at the start if there was no header name. However, it
2841 was not making this test for the second and subsequent header lines if
2842 there were newlines in the string. This meant that an invalid header could
2843 be inserted if Exim was badly configured.
2844
2845 7. Allow an ACL "warn" statement to add header lines at the start or after all
2846 the Received: headers, as well as at the end.
2847
2848 8. Added the rcpt_4xx retry error code.
2849
2850 9. Added postmaster_mailfrom=xxx to callout verification option.
2851
285210. Added mailfrom=xxxx to the callout verification option, for verify=
2853 header_sender only.
2854
285511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2856 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2857
285812. Inserted some casts to stop certain compilers warning when using pointer
2859 differences as field lengths or precisions in printf-type calls (mostly
2860 affecting debugging statements).
2861
286213. Added optional readline() support for -be (dynamically loaded).
2863
286414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2865 same clock tick as a message's arrival, so that its received time was the
2866 same as the "first fail" time on the retry record, and that message
2867 remained on the queue past the ultimate address timeout, every queue runner
2868 would try a delivery (because it was past the ultimate address timeout) but
2869 after another failure, the ultimate address timeout, which should have then
2870 bounced the address, did not kick in. This was a "< instead of <=" error;
2871 in most cases the first failure would have been in the next clock tick
2872 after the received time, and all would be well.
2873
287415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2875 being recognized when the domain list was tested by the match_domain
2876 condition in an expansion string.
2877
287816. Added the ${str2b64: operator.
2879
288017. Exim was always calling setrlimit() to set a large limit for the number of
2881 processes, without checking whether the existing limit was already
2882 adequate. (It did check for the limit on file descriptors.) Furthermore,
2883 errors from getrlimit() and setrlimit() were being ignored. Now they are
2884 logged to the main and panic logs, but Exim does carry on, to try to do its
2885 job under whatever limits there are.
2886
288718. Imported PCRE 5.0.
2888
288919. Trivial typo in log message " temporarily refused connection" (the leading
2890 space).
2891
289220. If the log selector return_path_on_delivery was set and an address was
2893 redirected to /dev/null, the delivery process crashed because it assumed
2894 that a return path would always be set for a "successful" delivery. In this
2895 case, the whole delivery is bypassed as an optimization, and therefore no
2896 return path is set.
2897
289821. Internal re-arrangement: the function for sending a challenge and reading
2899 a response while authentication was assuming a zero-terminated challenge
2900 string. It's now changed to take a pointer and a length, to allow for
2901 binary data in such strings.
2902
290322. Added the cyrus_sasl authenticator (code supplied by MBM).
2904
290523. Exim was not respecting finduser_retries when seeking the login of the
2906 uid under which it was called; it was always trying 10 times. (The default
2907 setting of finduser_retries is zero.) Also, it was sleeping after the final
2908 failure, which is pointless.
2909
291024. Implemented tls_on_connect_ports.
2911
291225. Implemented acl_smtp_predata.
2913
291426. If the domain in control=submission is set empty, Exim assumes that the
2915 authenticated id is a complete email address when it generates From: or
2916 Sender: header lines.
2917
291827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2919 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2920 chown and chgrp in /bin and hostname in /usr/bin.
2921
292228. Exim was keeping the "process log" file open after each use, just as it
2923 does for the main log. This opens the possibility of it remaining open for
2924 long periods when the USR1 signal hits a daemon. Occasional processlog
2925 errors were reported, that could have been caused by this. Anyway, it seems
2926 much more sensible not to leave this file open at all, so that is what now
2927 happens.
2928
292929. The long-running daemon process does not normally write to the log once it
2930 has entered its main loop, and it closes the log before doing so. This is
2931 so that log files can straightforwardly be renamed and moved. However,
2932 there are a couple of unusual error situations where the daemon does write
2933 log entries, and I had neglected to close the log afterwards.
2934
293530. The text of an SMTP error response that was received during a remote
2936 delivery was being truncated at 512 bytes. This is too short for some of
2937 the long messages that one sometimes sees. I've increased the limit to
2938 1024.
2939
294031. It is now possible to make retry rules that apply only when a message has a
2941 specific sender, in particular, an empty sender.
2942
294332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2944 it possible to be selective about when SMTP synchronization is enforced.
2945
294633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2947
294832. Implemented hosts_connection_nolog.
2949
295033. Added an ACL for QUIT.
2951
295234. Setting "delay_warning=" to disable warnings was not working; it gave a
2953 syntax error.
2954
295535. Added mailbox_size and mailbox_filecount to appendfile.
2956
295736. Added control = no_multiline_responses to ACLs.
2958
295937. There was a bug in the logic of the code that waits for the clock to tick
2960 in the case where the clock went backwards by a substantial amount such
2961 that the microsecond fraction of "now" was more than the microsecond
2962 fraction of "then" (but the whole seconds number was less).
2963
296438. Added support for the libradius Radius client library this is found on
2965 FreeBSD (previously only the radiusclient library was supported).
2966
2967
2968Exim version 4.42
2969-----------------
2970
2971 1. When certain lookups returned multiple values in the form name=value, the
2972 quoting of the values was not always being done properly. Specifically:
2973 (a) If the value started with a double quote, but contained no whitespace,
2974 it was not quoted.
2975 (b) If the value contained whitespace other than a space character (i.e.
2976 tabs or newlines or carriage returns) it was not quoted.
2977 This fix has been applied to the mysql and pgsql lookups by writing a
2978 separate quoting function and calling it from the lookup code. The fix
2979 should probably also be applied to nisplus, ibase and oracle lookups, but
2980 since I cannot test any of those, I have not disturbed their existing code.
2981
2982 2. A hit in the callout cache for a specific address caused a log line with no
2983 reason for rejecting RCPT. Now it says "Previous (cached) callout
2984 verification failure".
2985
2986 3. There was an off-by-one bug in the queryprogram router. An over-long
2987 return line was truncated at 256 instead of 255 characters, thereby
2988 overflowing its buffer with the terminating zero. As well as fixing this, I
2989 have increased the buffer size to 1024 (and made a note to document this).
2990
2991 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2992 when Exim is waiting for an SMTP response from a remote server, Exim
2993 restarts its select() call on the socket, thereby resetting its timeout.
2994 This is not a problem when such interrupts are rare. Somebody set up a cron
2995 job to run exiwhat every 2 minutes, which is less than the normal select()
2996 timeout (5 or 10 minutes). This meant that the select() timeout never
2997 kicked in because it was always reset. I have fixed this by comparing the
2998 time when an interrupt arrives with the time at the start of the first call
2999 to select(). If more time than the timeout has elapsed, the interrupt is
3000 treated as a timeout.
3001
3002 5. Some internal re-factoring in preparation for the addition of Sieve
3003 extensions (by MH). In particular, the "personal" test is moved to a
3004 separate function, and given an option for scanning Cc: and Bcc: (which is
3005 not set for Exim filters).
3006
3007 6. When Exim created an email address using the login of the caller as the
3008 local part (e.g. when creating a From: or Sender: header line), it was not
3009 quoting the local part when it contained special characters such as @.
3010
3011 7. Installed new OpenBSD configuration files.
3012
3013 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3014 try to make them clearer.
3015
3016 9. Callout options, other than the timeout value, were being ignored when
3017 verifying sender addresses in header lines. For example, when using
3018
3019 verify = header_sender/callout=no_cache
3020
3021 the cache was (incorrectly) being used.
3022
302310. Added a missing instance of ${EXE} to the exim_install script; this affects
3024 only the Cygwin environment.
3025
302611. When return_path_on_delivery was set as a log selector, if different remote
3027 addresses in the same message used different return paths and parallel
3028 remote delivery occurred, the wrong values would sometimes be logged.
3029 (Whenever a remote delivery process finished, the return path value from
3030 the most recently started remote delivery process was logged.)
3031
303212. RFC 3848 specifies standard names for the "with" phrase in Received: header
3033 lines when AUTH and/or TLS are in use. This is the "received protocol"
3034 field. Exim used to use "asmtp" for authenticated SMTP, without any
3035 indication (in the protocol name) for TLS use. Now it follows the RFC and
3036 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3037 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3038 names appear in log lines as well as in Received: header lines.
3039
304013. Installed MH's patches for Sieve to add the "copy" and "vacation"
3041 extensions, and comparison tests, and to fix some bugs.
3042
304314. Changes to the "personal" filter test:
3044
3045 (1) The test was buggy in that it was just doing the equivalent of
3046 "contains" tests on header lines. For example, if a user's address was
3047 anne@some.where, the "personal" test would incorrectly be true for
3048
3049 To: susanne@some.where
3050
3051 This test is now done by extracting each address from the header in turn,
3052 and checking the entire address. Other tests that are part of "personal"
3053 are now done using regular expressions (for example, to check local parts
3054 of addresses in From: header lines).
3055
3056 (2) The list of non-personal local parts in From: addresses has been
3057 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3058 taken from the Sieve specification recommendations.
3059
3060 (3) If the message contains any header line starting with "List-" it is
3061 treated as non-personal.
3062
3063 (4) The test for "circular" in the Subject: header line has been removed
3064 because it now seems ill-conceived.
3065
306615. Minor typos in src/EDITME comments corrected.
3067
306816. Installed latest exipick from John Jetmore.
3069
307017. If headers_add on a router specified a text string that was too long for
3071 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3072 of string_sprintf() is now avoided.
3073
307418. $message_body_size was not set (it was always zero) when running the DATA
3075 ACL and the local_scan() function.
3076
307719. For the "mail" command in an Exim filter, no default was being set for
3078 the once_repeat time, causing a random time value to be used if "once" was
3079 specified. (If the value happened to be <= 0, no repeat happened.) The
3080 default is now 0s, meaning "never repeat". The "vacation" command was OK
3081 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3082 (I found it when inspecting the code).
3083
308420. There is now an overall timeout for performing a callout verification. It
3085 defaults to 4 times the callout timeout, which applies to individual SMTP
3086 commands during the callout. The overall timeout applies when there is more
3087 than one host that can be tried. The timeout is checked before trying the
3088 next host. This prevents very long delays if there are a large number of
3089 hosts and all are timing out (e.g. when the network connections are timing
3090 out). The value of the overall timeout can be changed by specifying an
3091 additional sub-option for "callout", called "maxwait". For example:
3092
3093 verify = sender/callout=5s,maxwait=20s
3094
309521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3096 to the end before writing, but this should make it even safer).
3097
309822. Exim was forgetting that it had advertised PIPELINING for the second and
3099 subsequent messages on an SMTP connection. It was also not resetting its
3100 memory on STARTTLS and an internal HELO.
3101
310223. When Exim logs an SMTP synchronization error within a session, it now
3103 records whether PIPELINING has been advertised or not.
3104
310524. Added 3 instances of "(long int)" casts to time_t variables that were being
3106 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3107 rather than long int.
3108
310925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3110
311126. Added the never_mail option to autoreply.
3112
3113
3114Exim version 4.41
3115-----------------
3116
3117 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3118 crash if the getsockname() call failed; this can happen if a connection is
3119 closed very soon after it is established. The problem was simply in the
3120 order in which certain operations were done, causing Exim to try to write
3121 to the SMTP stream before it had set up the file descriptor. The bug has
3122 been fixed by making things happen in the correct order.
3123
3124
3125Exim version 4.40
3126-----------------
3127
3128 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3129 before the connection was closed, thus losing the rejection response.
3130
3131 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3132 some early Solaris releases, but causes trouble in current releases where
3133 socklen_t is defined.
3134
3135 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3136 always exist.
3137
3138 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3139 configured.
3140
3141 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3142 that releasing the top of it at the end releases what was used for sub-
3143 expansions (unless the block got too big). However, discard this block if
3144 the first thing is a variable or header, so that we can use its block when
3145 it is dynamic (useful for very large $message_headers, for example).
3146
3147 6. Lookups now cache *every* query, not just the most recent. A new, separate
3148 store pool is used for this. It can be recovered when all lookup caches are
3149 flushed. Lookups now release memory at the end of their result strings.
3150 This has involved some general refactoring of the lookup sources.
3151
3152 7. Some code has been added to the store_xxx() functions to reduce the amount
3153 of flapping under certain conditions.
3154
3155 8. log_incoming_interface used to affect only the <= reception log lines. Now
3156 it causes the local interface and port to be added to several more SMTP log
3157 lines, for example "SMTP connection from", and rejection lines.
3158
3159 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3160
316110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3162
316311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3164 could be overwritten at the end of the current message (or the start of a
3165 new message if it was set in a HELO ACL). The value is now preserved for
3166 the duration of the SMTP connection.
3167
316812. If a transport had a headers_rewrite setting, and a matching header line
3169 contained an unqualified address, that address was qualified, even if it
3170 did not match any rewriting rules. The underlying bug was that the values
3171 of the flags that permit the existence of unqualified sender and recipient
3172 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3173 non-local messages, and by -bnq for local messages) were not being
3174 preserved with the message after it was received.
3175
317613. When Exim was logging an SMTP synchronization error, it could sometimes log
3177 "next input=" as part of the text comprising the host identity instead of
3178 the correct text. The code was using the same buffer for two different
3179 strings. However, depending on which order the printing function evaluated
3180 its arguments, the bug did not always show up. Under Linux, for example, my
3181 test suite worked just fine.
3182
318314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3184 doesn't work with some older versions of Perl. It has been changed to "my",
3185 which in any case is probably the better facility to use.
3186
318715. A really picky compiler found some instances of statements for creating
3188 error messages that either had too many or two few arguments for the format
3189 string.
3190
319116. The size of the buffer for calls to the DNS resolver has been increased
3192 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3193 for addresses that have a lot of PTR records. This alleviates a problem; it
3194 does not fully solve it.
3195
319617. A dnsdb lookup for PTR records that receives more data than will fit in the
3197 buffer now truncates the list and logs the incident, which is the same
3198 action as happens when Exim is looking up a host name and its aliases.
3199 Previously in this situation something unpredictable would happen;
3200 sometimes it was "internal error: store_reset failed".
3201
320218. If a server dropped the connection unexpectedly when an Exim client was
3203 using GnuTLS and trying to read a response, the client delivery process
3204 crashed while trying to generate an error log message.
3205
320619. If a "warn" verb in an ACL added multiple headers to a message in a single
3207 string, for example:
3208
3209 warn message = H1: something\nH2: something
3210
3211 the text was added as a single header line from Exim's point of view
3212 though it ended up OK in the delivered message. However, searching for the
3213 second and subsequent header lines using $h_h2: did not work. This has been
3214 fixed. Similarly, if a system filter added multiple headers in this way,
3215 the routers could not see them.
3216
321720. Expanded the error message when iplsearch is called with an invalid key to
3218 suggest using net-iplsearch in a host list.
3219
322021. When running tests using -bh, any delays imposed by "delay" modifiers in
3221 ACLs are no longer actually imposed (and a message to that effect is
3222 output).
3223
322422. If a "gecos" field in a passwd entry contained escaped characters, in
3225 particular, if it contained a \" sequence, Exim got it wrong when building
3226 a From: or a Sender: header from that name. A second bug also caused
3227 incorrect handling when an unquoted " was present following a character
3228 that needed quoting.
3229
323023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3231 was not being matched caselessly.
3232
323324. Arranged for all hyphens in the exim.8 source to be escaped with
3234 backslashes.
3235
323625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3237 properly. Recipient callout cache records were still being keyed to include
3238 the sender, even when use_sender was set false. This led to far more
3239 callouts that were necessary. The sender is no longer included in the key
3240 when use_sender is false.
3241
324226. Added "control = submission" modifier to ACLs.
3243
324427. Added the ${base62d: operator to decode base 62 numbers.
3245
324628. dnsdb lookups can now access SRV records.
3247
324829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3249 the configuration file.
3250
325130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3252 (-v) mode. This makes the output for a verbose queue run more intelligible.
3253
325431. Added a use_postmaster feature to recipient callouts.
3255
325632. Added the $body_zerocount variable, containing the number of binary zero
3257 bytes in the message body.
3258
325933. The time of last modification of the "new" subdirectory is now used as the
3260 "mailbox time last read" when there is a quota error for a maildir
3261 delivery.
3262
326334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3264
326535. Added +ignore_unknown as a special item in host lists.
3266
326736. Code for decoding IPv6 addresses in host lists is now included, even if
3268 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3269 address was recognized as an IP address, but was then not correctly decoded
3270 into binary, causing unexpected and incorrect effects when compared with
3271 another IP address.
3272
3273
3274Exim version 4.34
3275-----------------
3276
3277 1. Very minor rewording of debugging text in manualroute to say "list of
3278 hosts" instead of "hostlist".
3279
3280 2. If verify=header_syntax was set, and a header line with an unqualified
3281 address (no domain) and a large number of spaces between the end of the
3282 name and the colon was received, the reception process suffered a buffer
3283 overflow, and (when I tested it) crashed. This was caused by some obsolete
3284 code that should have been removed. The fix is to remove it!
3285
3286 3. When running in the test harness, delay a bit after writing a bounce
3287 message to get a bit more predictability in the log output.
3288
3289 4. Added a call to search_tidyup() just before forking a reception process. In
3290 theory, someone could use a lookup in the expansion of smtp_accept_max_
3291 per_host which, without the tidyup, could leave open a database connection.
3292
3293 5. Added the variables $recipient_data and $sender_data which get set from a
3294 lookup success in an ACL "recipients" or "senders" condition, or a router
3295 "senders" option, similar to $domain_data and $local_part_data.
3296
3297 6. Moved the writing of debug_print from before to after the "senders" test
3298 for routers.
3299
3300 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3301 problems for message scanning, either using a data ACL, or using
3302 local_scan() because the Received: header was not generated till after they
3303 were called (in order to set the time as the time of reception completion).
3304 I have revised the way this works. The header is now generated after the
3305 body is received, but before the ACL or local_scan() are called. After they
3306 are run, the timestamp in the header is updated.
3307
3308
3309Exim version 4.33
3310-----------------
3311
3312 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3313 before starting a queue runner without re-exec. This happened only when
3314 deliver_drop_privilege was set or when the Exim user was set to root. The
3315 effect of the bug was that timeouts during subsequent deliveries caused
3316 crashes instead of being properly handled. The handler is now left at its
3317 default (and expected) setting.
3318
3319 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3320 message, again when deliver_drop_privilege is set or Exim is run as root.
3321 The bug described in (1) was not present in this case, but the tidying up
3322 of the other signals was missing. I have made the two cases consistent.
3323
3324 3. The ignore_target_hosts setting on a manualroute router was being ignored
3325 for hosts that were looked up using the /MX notation.
3326
3327 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3328 in domain lists.
3329
3330 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3331 operated on the sender address. After changing the $sender_address to <>
3332 for the sender address verify, Exim was re-instated it as the original
3333 (before rewriting) address, but remembering that it had rewritten it, so it
3334 wasn't rewriting it again. This bug also had the effect of breaking the
3335 sender address verification caching when the sender address was rewritten.
3336
3337 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3338 This has been changed so that if the ip literal address matches
3339 ignore_target_hosts, the router declines.
3340
3341 7. Added expansion conditions match_domain, match_address, and match_local_
3342 part (NOT match_host).
3343
3344 8. The placeholder for the Received: header didn't have a length field set.
3345
3346 9. Added code to Exim itself and to exim_lock to test for a specific race
3347 condition that could lead to file corruption when using MBX delivery. The
3348 issue is with the lockfile that is created in /tmp. If this file is removed
3349 after a process has opened it but before that process has acquired a lock,
3350 there is the potential for a second process to recreate the file and also
3351 acquire a lock. This could lead to two Exim processes writing to the file
3352 at the same time. The added code performs the same test as UW imapd; it
3353 checks after acquiring the lock that its file descriptor still refers to
3354 the same named file.
3355
335610. The buffer for building added header lines was of fixed size, 8192 bytes.
3357 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3358 when Exim is built.
3359
336011. Added the smtp_active_hostname option. If used, this will typically be made
3361 to depend on the incoming interface address. Because $interface_address is
3362 not set up until the daemon has forked a reception process, error responses
3363 that can happen earlier (such as "too many connections") no longer contain
3364 a host name.
3365
336612. If an expansion in a condition on a "warn" statement fails because a lookup
3367 defers, the "warn" statement is abandoned, and the next ACL statement is
3368 processed. Previously this caused the whole ACL to be aborted.
3369
337013. Added the iplsearch lookup type.
3371
337214. Added ident_timeout as a log selector.
3373
337415. Added tls_certificate_verified as a log selector.
3375
337616. Added a global option tls_require_ciphers (compare the smtp transport
3377 option of the same name). This controls incoming TLS connections.
3378
337917. I finally figured out how to make tls_require_ciphers do a similar thing
3380 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3381 before starting the TLS session.
3382
338318. Tabs are now shown as \t in -bP output.
3384
338519. If the log selector return_path_on_delivery was set, Exim crashed when
3386 bouncing a message because it had too many Received: header lines.
3387
338820. If two routers both had headers_remove settings, and the first one included
3389 a superfluous trailing colon, the final name in the first list and the
3390 first name in the second list were incorrectly joined into one item (with a
3391 colon in the middle).
3392
3393
3394Exim version 4.32
3395-----------------
3396
3397 1. Added -C and -D options to the exinext utility, mainly to make it easier
3398 to include in the automated testing, but these could be helpful when
3399 multiple configurations are in use.
3400
3401 2. The exinext utility was not formatting the output nicely when there was
3402 an alternate port involved in the retry record key, nor when there was a
3403 message id as well (for retries that were specific to a specific message
3404 and a specific host). It was also confused by IPv6 addresses, because of
3405 the additional colons they contain. I have fixed the IPv4 problem, and
3406 patched it up to do a reasonable job for IPv6.
3407
3408 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3409 delivery, the log line now contains "pipelined" if PIPELINING was used.
3410
3411 4. An SMTP transport process used to panic and die if the bind() call to set
3412 an explicit outgoing interface failed. This has been changed; it is now
3413 treated in the same way as a connect() failure.
3414
3415 5. A reference to $sender_host_name in the part of a conditional expansion
3416 that was being skipped was still causing a DNS lookup. This no longer
3417 occurs.
3418
3419 6. The def: expansion condition was not recognizing references to header lines
3420 that used bh_ and bheader_.
3421
3422 7. Added the _cache feature to named lists.
3423
3424 8. The code for checking quota_filecount in the appendfile transport was
3425 allowing one more file than it should have been.
3426
3427 9. For compatibility with Sendmail, the command line option
3428
3429 -prval:sval
3430
3431 is equivalent to
3432
3433 -oMr rval -oMs sval
3434
3435 and sets the incoming protocol and host name (for trusted callers). The
3436 host name and its colon can be omitted when only the protocol is to be set.
3437 Note the Exim already has two private options, -pd and -ps, that refer to
3438 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3439 "s", but I don't think that's a major issue.
3440
344110. A number of refactoring changes to the code, none of which should affect
3442 Exim's behaviour:
3443
3444 (a) The number of logging options was getting close to filling up the
3445 32-bit word that was used as a bit map. I have split them into two classes:
3446 those that are passed in the argument to log_write(), and those that are
3447 only ever tested independently outside of that function. These are now in
3448 separate 32-bit words, so there is plenty of room for expansion again.
3449 There is no change in the user interface or the logging behaviour.
3450
3451 (b) When building, for example, log lines, the code previously used a
3452 macro that called string_cat() twice, in order to add two strings. This is
3453 not really sufficiently general. Furthermore, there was one instance where
3454 it was actually wrong because one of the argument was used twice, and in
3455 one call a function was used. (As it happened, calling the function twice
3456 did not affect the overall behaviour.) The macro has been replaced by a
3457 function that can join an arbitrary number of extra strings onto a growing
3458 string.
3459
3460 (c) The code for expansion conditions now uses a table and a binary chop
3461 instead of a serial search (which was left over from when there were very
3462 few conditions). Also, it now recognizes conditions like "pam" even when
3463 the relevant support is not compiled in: a suitably worded error message is
3464 given if an attempt is made to use such a condition.
3465
346611. Added ${time_interval:xxxxx}.
3467
346812. A bug was causing one of the ddress fields not to be passed back correctly
3469 from remote delivery subprocesses. The field in question was not being
3470 subsequently used, so this caused to problems in practice.
3471
347213. Added new log selectors queue_time and deliver_time.
3473
347414. Might have fixed a bug in maildirsizefile handling that threw up
3475 "unexpected character" debug warnings, and recalculated the data
3476 unnecessarily. In any case, I expanded the warning message to give more
3477 information.
3478
347915. Added the message "Restricted characters in address" to the statements in
3480 the default ACL that block characters like @ and % in local parts.
3481
348216. Change 71 for release 4.31 proved to be much less benign that I imagined.
3483 Three changes have been made:
3484
3485 (a) There was a serious bug; a negative response to MAIL caused the whole
3486 recipient domain to be cached as invalid, thereby blocking all messages
3487 to all local parts at the same domain, from all senders. This bug has
3488 been fixed. The domain is no longer cached after a negative response to
3489 MAIL if the sender used is not empty.
3490
3491 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3492 been restored.
3493
3494 (c) A new callout option, "use_sender" has been added for people who want
3495 the modified behaviour.
3496
3497
3498Exim version 4.31
3499-----------------
3500
3501 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3502 Larry Rosenman.
3503
3504 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3505 indeed breaks things for older releases.
3506
3507 3. Added additional logging to the case where there is a problem reading data
3508 from a filter that is running in a subprocess using a pipe, in order to
3509 try to track down a specific problem.
3510
3511 4. Testing facility fudge: when running in the test harness and attempting
3512 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3513 getting "No route to host". Convert this to a timeout.
3514
3515 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3516 warning.
3517
3518 6. Some OS don't have socklen_t but use size_t instead. This affects the
3519 fifth argument of getsockopt() amongst other things. This is now
3520 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3521 can be set for individual OS. I have set it for SunOS5, OSF1, and
3522 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3523 some earlier ones do not.
3524
3525 7. Change 4.30/15 was not doing the test caselessly.
3526
3527 8. The standard form for an IPv6 address literal was being rejected by address
3528 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3529 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3530 this, as well as the form without the "IPv6" on the front (but only when
3531 address literals are enabled, of course).
3532
3533 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3534
353510. Exim crashed if a message with an empty sender address specified by -f
3536 encountered a router with an errors_to setting. This could be provoked only
3537 by a command such as
3538
3539 exim -f "" ...
3540
3541 where an empty string was supplied; "<>" did not hit this bug.
3542
354311. Installed PCRE release 4.5.
3544
354512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3546 remained set. It is now erased.
3547
354813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3549 times from message ids (which are base 36 rather than the normal 62).
3550
355114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3552 were being counted as actual protocol errors, and logged if the log
3553 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3554 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3555 and DATA following a set of rejected RCPTs do not count as protocol errors.
3556 In other words, Exim assumes they were pipelined, though th