Fix bug in previous patch: following data is permitted after '.' so it
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
563b63fa 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.503 2007/04/16 10:31:58 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
PH
6Exim version 4.67
7-----------------
8
22ad45c9
MH
9MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
10 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
11 Jan Srzednicki.
12
b4ed4da0
PH
13PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
14 issue a MAIL command.
15
431b7361
PH
16PH/02 In an ACL statement such as
17
18 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
19
20 if a client was not listed at all, or was listed with a value other than
21 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
22 the condition was not true (as it should be), so access was not denied.
23 The bug was that the ! inversion was incorrectly passed on to the second
24 item. This has been fixed.
25
26PH/03 Added additional dnslists conditions == and =& which are different from
27 = and & when the dns lookup returns more than one IP address.
28
83da1223
PH
29PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
30 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
31
54fc8428
PH
32PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
33 FSYNC, which compiles an option called disable_fsync that allows for
34 bypassing fsync(). The documentation is heavily laced with warnings.
35
34c5e8dd
SC
36SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
37
bbe15da8
PH
38PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
39 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
40 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
41 including adding "make clean"; (3) Added -fPIC when compiling the test
42 dynamically loaded module, to get rid of a warning.
43
0e8a9471
MH
44MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
45 message fails, move_frozen_messages = true and ignore_bounce_errors_after
46 = 0s. The bug is otherwise harmless.
47
f0872424
PH
48PH/07 There was a bug in the dovecot authenticator such that the value of
49 $auth1 could be overwritten, and so not correctly preserved, after a
50 successful authentication. This usually meant that the value preserved by
51 the server_setid option was incorrect.
52
b01dd148
PH
53PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
54
6bf342e1
PH
55PH/09 Installed PCRE release 7.0.
56
273f34d0
PH
57PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
58 run for batched SMTP input. It is now run at the start of every message
59 in the batch. While fixing this I discovered that the process information
60 (output by running exiwhat) was not always getting set for -bs and -bS
61 input. This is fixed, and it now also says "batched" for BSMTP.
62
cf8b11a5
PH
63PH/11 Added control=no_pipelining.
64
41c7c167
PH
65PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
66 patch, slightly modified), and move the expansion of helo_data till after
67 the connection is made in the smtp transport (so it can use these
68 values).
69
9c57cbc0
PH
70PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
71
f3f065bb
PH
72PH/14 Added log_selector = +pid.
73
047bdd8c
PH
74PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
75
0ce9abe6
PH
76PH/16 Add ${if forany and ${if forall.
77
0e22dfd1
PH
78PH/17 Added dsn_from option to vary the From: line in DSNs.
79
4c590bd1
PH
80PH/18 Flush SMTP output before performing a callout, unless control =
81 no_callout_flush is set.
82
09945f1e
PH
83PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
84 was true (the default) a successful delivery failed to delete the retry
85 item, thus causing premature timeout of the address. The bug is now
86 fixed.
87
c51b8e75
PH
88PH/20 Added hosts_avoid_pipelining to the smtp transport.
89
e28326d8
PH
90PH/21 Long custom messages for fakedefer and fakereject are now split up
91 into multiline reponses in the same way that messages for "deny" and
92 other ACL rejections are.
93
75b1493f
PH
94PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
95 with slight modification.
96
7c5214ec
PH
97PH/23 Applied sieve patches from the maintainer "tracking the latest notify
98 draft, changing the syntax and factoring some duplicate code".
99
4311097e
PH
100PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
101 for deliveries of the second and subsequent messages over the same SMTP
102 connection.
103
29f89cad
PH
104PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
105 ${reduce, with only minor "tidies".
106
5e687460
SC
107SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
108
c3611384
PH
109PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
110 expansion side effects.
111
5a11a7b4
PH
112PH/27 When a message times out after an over-quota error from an Exim-imposed
113 quota, the bounce message says "mailbox is full". This message was not
114 being given when it was a system quota that was exceeded. It now should
115 be the same.
116
0e20aff9
MH
117MH/03 Made $recipients available in local_scan(). local_scan() already has
118 better access to the recipient list through recipients_list[], but
119 $recipients can be useful in postmaster-provided expansion strings.
120
ca86f471
PH
121PH/28 The $smtp_command and $smtp_command_argument variables were not correct
122 in the case of a MAIL command with additional options following the
123 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
124 were accidentally chopped off.
125
a14e5636
PH
126PH/29 SMTP synchronization checks are implemented when a command is read -
127 there is a check that no more input is waiting when there shouldn't be
128 any. However, for some commands, a delay in an ACL can mean that it is
129 some time before the response is written. In this time, more input might
130 arrive, invalidly. So now there are extra checks after an ACL has run for
131 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
132 pipelining has not been advertised.
133
ec95d1a6
PH
134PH/30 MH's patch to allow iscntrl() characters to be list separators.
135
42855d71
PH
136PH/31 Unlike :fail:, a custom message specified with :defer: was not being
137 returned in the SMTP response when smtp_return_error_details was false.
138 This has been fixed.
139
57c2c631
PH
140PH/32 Change the Dovecot authenticator to use read() and write() on the socket
141 instead of the C I/O that was originally supplied, because problems were
142 reported on Solaris.
143
58c01c94
PH
144PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
145 Exim which did not show up earlier: it was assuming that a call to
146 SSL_CTX_set_info_callback() might give an error value. In fact, there is
147 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
148 was a macro that became an assignment, so it seemed to work. This has
149 changed to a proper function call with a void return, hence the compile
150 error. Exim's code has been fixed.
151
dee5a20a
PH
152PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
153 cpus.
154
d2ee6114
PH
155PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
156
b2d5182b
PH
157PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
158
79749a79
PH
159PH/37 If a message is not accepted after it has had an id assigned (e.g.
160 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
161 "Completed" line in the log. When some messages of this type were
162 selected by exigrep, they were listed as "not completed". Others were
163 picked up by some special patterns. I have improved the selection
164 criteria to be more general.
79749a79 165
c456d9bb
PH
166PH/38 The host_find_failed option in the manualroute router can now be set
167 to "ignore", to completely ignore a host whose IP address cannot be
168 found. If all hosts are ignored, the behaviour is controlled by the new
169 host_all_ignored option.
170
cd9868ec
PH
171PH/39 In a list of hosts for manualroute, if one item (either because of multi-
172 homing or because of multiple MX records with /mx) generated more than
173 one IP address, and the following item turned out to be the local host,
174 all the secondary addresses of the first item were incorrectly removed
175 from the list, along with the local host and any following hosts (which
176 is what is supposed to happen).
177
ebeaf996
PH
178PH/40 When Exim receives a message, it writes the login name, uid, and gid of
179 whoever called Exim into the -H file. In the case of the daemon it was
180 behaving confusingly. When first started, it used values for whoever
181 started the daemon, but after a SIGHUP it used the Exim user (because it
182 calls itself on a restart). I have changed the code so that it now always
183 uses the Exim user.
184
2679d413
PH
185PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
186 message are rejected with the same error (e.g. no authentication or bad
187 sender address), and a DATA command is nevertheless sent (as can happen
188 with PIPELINING or a stupid MUA), the error message that was given to the
189 RCPT commands is included in the rejection of the DATA command. This is
190 intended to be helpful for MUAs that show only the final error to their
191 users.
192
84024b72
PH
193PH/42 Another patch from the Sieve maintainer.
194
8005d38e
SC
195SC/02 Eximstats - Differentiate between permanent and temporary rejects.
196 Eximstats - Fixed some broken HTML links and added missing column headers
197 (Jez Hancock).
198 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
199 columns for Rejects, Temp Rejects, Ham, and Spam rows.
200
3298c6c6
SC
201SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
202
a43a27c5
PH
203PH/43 Yet another patch from the Sieve maintainer.
204
58eb016e 205PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
206 the response to the final '.' that terminates a message, but only in the
207 case where the client has not sent further data following the '.'
208 (unfortunately, this is allowed). However, in many cases there won't be
209 any further data because there won't be any more messages to send. A call
210 to select() can be used: if it shows that the input is "ready", there is
211 either input waiting, or the socket has been closed. An attempt to read
212 the next input character can distinguish the two cases. Previously, Exim
58eb016e 213 would have sent an OK response which the client would never have see.
563b63fa
PH
214 This could lead to message repetition. This fix should cure that, at
215 least in a lot of common cases.
58eb016e 216
b4ed4da0 217
5dd1517f
PH
218Exim version 4.66
219-----------------
220
221PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
222 fixed by 4.65/MH/01 (is this a record?) are fixed:
223
224 (i) An empty string was always treated as zero by the numeric comparison
225 operators. This behaviour has been restored.
226
227 (ii) It is documented that the numeric comparison operators always treat
228 their arguments as decimal numbers. This was broken in that numbers
229 starting with 0 were being interpreted as octal.
230
231 While fixing these problems I realized that there was another issue that
232 hadn't been noticed. Values of message_size_limit (both the global option
233 and the transport option) were treated as octal if they started with 0.
234 The documentation was vague. These values are now always treated as
235 decimal, and I will make that clear in the documentation.
236
237
93cfa765
TK
238Exim version 4.65
239-----------------
240
241TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
242 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
243 versions. (#438)
244
d6066548
MH
245MH/01 Don't check that the operands of numeric comparison operators are
246 integers when their expansion is in "skipping" mode (fixes bug
247 introduced by 4.64-PH/07).
248
4362ff0d
PH
249PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
250 child addresses, Exim now panics and dies. Previously, because the count
251 is held in a short int, deliveries were likely to be lost. As such a
252 large number of recipients for a single message is ridiculous
253 (performance will be very, very poor), I have chosen to impose a limit
254 rather than extend the field.
255
93cfa765 256
944e9e9c
TF
257Exim version 4.64
258-----------------
aa41d2de 259
21d74bd9
TK
260TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
261 leftover -K file (the existence of which was triggered by #402).
262 While we were at it, introduced process PID as part of the -K
263 filename. This should rule out race conditions when creating
264 these files.
265
266TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
267 processing considerably. Previous code took too long for large mails,
268 triggering a timeout which in turn triggers #401.
269
270TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
271 in the DK code in transports.c. sendfile() is not really portable,
272 hence the _LINUX specificness.
944e9e9c
TF
273
274TF/01 In the add_headers option to the mail command in an Exim filter,
275 there was a bug that Exim would claim a syntax error in any
276 header after the first one which had an odd number of characters
277 in the field name.
278
2b1c6e3a
PH
279PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
280 callout verification, Exim cached a "reject" for the entire domain. This
281 is correct for most verifications, but it is not correct for a recipient
282 verification with use_sender or use_postmaster set, because in that case
283 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
284 case of MAIL FROM:<> rejection from other early rejections (e.g.
285 rejection of HELO). When verifying a recipient using a non-null MAIL
286 address, the cache is ignored if it shows MAIL FROM:<> rejection.
287 Whatever the result of the callout, the value of the domain cache is
288 left unchanged (for any other kind of callout, getting as far as trying
289 RCPT means that the domain itself is ok).
290
1f872c80
PH
291PH/02 Tidied a number of unused variable and signed/unsigned warnings that
292 gcc 4.1.1 threw up.
293
294PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
295 manifest itself as EPIPE rather than ECONNECT. When tidying away a
296 session, the daemon ignores ECONNECT errors and logs others; it now
297 ignores EPIPE as well.
298
d203e649
PH
299PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
300 (quoted-printable decoding).
301
cc2ed8f7 302PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 303 later the small subsequent patch to fix an introduced bug.
f951fd57 304
ddfcd446
PH
305PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
306
d45b1de8
PH
307PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
308
309PH/08 An error is now given if message_size_limit is specified negative.
310
38a0a95f 311PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 312 to be given (somewhat) arbitrary names.
38a0a95f 313
a2405d83
JJ
314JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
315 in 4.64-PH/09.
316
317JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
318 miscellaneous code fixes
319
6ea85e9a
PH
320PH/10 Added the log_reject_target ACL modifier to specify where to log
321 rejections.
322
26da7e20
PH
323PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
324 hostname. This is wrong, because it relates to the incoming message (and
325 probably the interface on which it is arriving) and not to the outgoing
326 callout (which could be using a different interface). This has been
327 changed to use the value of the helo_data option from the smtp transport
328 instead - this is what is used when a message is actually being sent. If
329 there is no remote transport (possible with a router that sets up host
330 addresses), $smtp_active_hostname is used.
6ea85e9a 331
14aa5a05 332PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 333 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
334 (a) The code assumed that strncpy() returns a negative number on buffer
335 overflow, which isn't the case. Replaced with Exim's string_format()
336 function.
337 (b) There were several signed/unsigned issues. I just did the minimum
338 hacking in of casts. There is scope for a larger refactoring.
339 (c) The code used strcasecmp() which is not a standard C function.
340 Replaced with Exim's strcmpic() function.
341 (d) The code set only $1; it now sets $auth1 as well.
342 (e) A simple test gave the error "authentication client didn't specify
343 service in request". It would seem that Dovecot has changed its
344 interface. Fortunately there's a specification; I followed it and
345 changed what the client sends and it appears to be working now.
346
ff75a1f7
PH
347PH/13 Added $message_headers_raw to provide the headers without RFC 2047
348 decoding.
349
e6f6568e
PH
350PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
351 address A is aliased to B and C, where B exists and C does not. Without
352 -v the output is "A verified" because verification stops after a
353 successful redirection if more than one address is generated. However,
354 with -v the child addresses are also verified. Exim was outputting "A
355 failed to verify" and then showing the successful verification for C,
356 with its parentage. It now outputs "B failed to verify", showing B's
357 parentage before showing the successful verification of C.
358
d6f6e0dc
PH
359PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
360 look up a TXT record in a specific list after matching in a combined
361 list.
362
322050c2
PH
363PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
364 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
365 they consult the DNS. I had assumed they would set it the way they
366 wanted; and indeed my experiments on Linux seem to show that in some
367 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
368 To be on the safe side, however, I have now made the interface to
369 host_find_byname() similar to host_find_bydns(), with an argument
370 containing the DNS resolver options. The host_find_byname() function now
371 sets these options at its start, just as host_find_bydns() does. The smtp
372 transport options dns_qualify_single and dns_search_parents are passed to
373 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
374 of host_find_byname() use the default settings of RES_DEFNAMES
375 (qualify_single) but not RES_DNSRCH (search_parents).
376
08955dd3
PH
377PH/17 Applied (a modified version of) Nico Erfurth's patch to make
378 spool_read_header() do less string testing, by means of a preliminary
379 switch on the second character of optional "-foo" lines. (This is
380 overdue, caused by the large number of possibilities that now exist.
381 Originally there were few.) While I was there, I also converted the
382 str(n)cmp tests so they don't re-test the leading "-" and the first
383 character, in the hope this might squeeze out yet more improvement.
384
1eccaa59
PH
385PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
386 flag allowing group syntax was set by the header_syntax check but not
387 turned off, possible causing trouble later; (2) The flag was not being
388 set at all for the header_verify test, causing "group"-style headers to
389 be rejected. I have now set it in this case, and also caused header_
390 verify to ignore an empty address taken from a group. While doing this, I
391 came across some other cases where the code for allowing group syntax
392 while scanning a header line wasn't quite right (mostly, not resetting
393 the flag correctly in the right place). These bugs could have caused
394 trouble for malformed header lines. I hope it is now all correct.
395
602e59e5
PH
396PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
397 with the "reply" argument non-NULL. The code, however (which originally
398 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
399 but it didn't always do it. This confused somebody who was copying the
400 code for some other use. I have removed all the tests.
401
411ef850
PH
402PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
403 feature that was used to support insecure browsers during the U.S. crypto
404 embargo. It requires special client support, and Exim is probably the
405 only MTA that supported it -- and would never use it because real RSA is
406 always available. This code has been removed, because it had the bad
407 effect of slowing Exim down by computing (never used) parameters for the
408 RSA_EXPORT functionality.
409
7befa435
PH
410PH/21 On the advice of Timo Sirainen, added a check to the dovecot
411 authenticator to fail if there's a tab character in the incoming data
412 (there should never be unless someone is messing about, as it's supposed
413 to be base64-encoded). Also added, on Timo's advice, the "secured" option
414 if the connection is using TLS or if the remote IP is the same as the
415 local IP, and the "valid-client-cert option" if a client certificate has
416 been verified.
417
48da4259 418PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
419 authenticators. This can be used for authorization after authentication
420 succeeds. (In the case of plaintext, it servers for both authentication
421 and authorization.)
422
48da4259
PH
423PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
424 if any retry times were supplied.
425
d1d5595c
PH
426PH/24 Exim crashed if verify=helo was activated during an incoming -bs
427 connection, where there is no client IP address to check. In this
428 situation, the verify now always succeeds.
429
0ef732d9
PH
430PH/25 Applied John Jetmore's -Mset patch.
431
328895cc
PH
432PH/26 Added -bem to be like -Mset, but loading a message from a file.
433
fd700877
PH
434PH/27 In a string expansion for a processed (not raw) header when multiple
435 headers of the same name were present, leading whitespace was being
436 removed from all of them, but trailing whitespace was being removed only
437 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
438 before concatenation. Completely empty headers in a concatenation (as
439 before) are ignored.
fd700877 440
8dce1a6f
PH
441PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
442 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
443
17af4a17
PH
444PH/29 [Removed. This was a change that I later backed out, and forgot to
445 correct the ChangeLog entry (that I had efficiently created) before
446 committing the later change.]
f6c332bd
PH
447
448PH/30 Exim was sometimes attempting to deliver messages that had suffered
449 address errors (4xx response to RCPT) over the same connection as other
450 messages routed to the same hosts. Such deliveries are always "forced",
451 so retry times are not inspected. This resulted in far too many retries
452 for the affected addresses. The effect occurred only when there were more
453 hosts than the hosts_max_try setting in the smtp transport when it had
454 the 4xx errors. Those hosts that it had tried were not added to the list
455 of hosts for which the message was waiting, so if all were tried, there
456 was no problem. Two fixes have been applied:
457
458 (i) If there are any address or message errors in an SMTP delivery, none
459 of the hosts (tried or untried) are now added to the list of hosts
460 for which the message is waiting, so the message should not be a
461 candidate for sending over the same connection that was used for a
462 successful delivery of some other message. This seems entirely
463 reasonable: after all the message is NOT "waiting for some host".
464 This is so "obvious" that I'm not sure why it wasn't done
465 previously. Hope I haven't missed anything, but it can't do any
466 harm, as the worst effect is to miss an optimization.
467
468 (ii) If, despite (i), such a delivery is accidentally attempted, the
469 routing retry time is respected, so at least it doesn't keep
470 hammering the server.
471
c1114884
PH
472PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
473 in ${readsocket because some servers need this prod.
474
7a0743eb
PH
475PH/32 Added some extra debug output when updating a wait-xxx database.
476
0d85fa3f
PH
477PH/33 The hint "could be header name not terminated by colon", which has been
478 given for certain expansion errors for a long time, was not being given
479 for the ${if def:h_colon_omitted{... case.
480
1bf43b78
PH
481PH/34 The spec says: "With one important exception, whenever a domain list is
482 being scanned, $domain contains the subject domain." There was at least
483 one case where this was not true.
484
520de300
PH
485PH/35 The error "getsockname() failed: connection reset by peer" was being
486 written to the panic log as well as the main log, but it isn't really
487 panic-worthy as it just means the connection died rather early on. I have
488 removed the panic log writing for the ECONNRESET error when getsockname()
489 fails.
490
48c7f9e2
PH
491PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
492 runs only) independently of the message's sender address. This meant
493 that, if the 4xx error was in fact related to the sender, a different
494 message to the same recipient with a different sender could confuse
495 things. In particualar, this can happen when sending to a greylisting
496 server, but other circumstances could also provoke similar problems.
497 I have changed the default so that the retry time for these errors is now
498 based a combination of the sender and recipient addresses. This change
499 can be overridden by setting address_retry_include_sender=false in the
500 smtp transport.
501
99ea1c86
PH
502PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
503 remote server are returned as part of bounce messages. This was not
504 happening for LMTP over a pipe (the lmtp transport), but now it is the
505 same for both kinds of LMTP.
506
a2042e78
PH
507PH/38 Despite being documented as not happening, Exim was rewriting addresses
508 in header lines that were in fact CNAMEs. This is no longer the case.
509
4fbcfc2e
PH
510PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
511 and queue runs started by the daemon processed all messages. This has
512 been fixed so that -R and -S can now usefully be given with -q<time>.
513
aa41d2de
PH
514PH/40 Import PCRE release 6.7 (fixes some bugs).
515
af561417
PH
516PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
517
3cc66b45
PH
518PH/42 Give an error if -q is specified more than once.
519
194cc0e4
PH
520PH/43 Renamed the variables $interface_address and $interface_port as
521 $received_ip_address and $received_port, to make it clear that these
522 values apply to message reception, and not to the outgoing interface when
523 a message is delivered. (The old names remain recognized, of course.)
524
a401ddaa
PH
525PH/44 There was no timeout on the connect() call when using a Unix domain
526 socket in the ${readsocket expansion. There now is.
527
4e88a19f
PH
528PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
529 be meaningful with "accept".
530
d7d7b289
SC
531SC/01 Eximstats V1.43
532 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
533
534SC/02 Eximstats V1.44
535 Use a glob alias rather than an array ref in the generated
536 parser. This improves both readability and performance.
537
538SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
539 Collect SpamAssassin and rejection statistics.
540 Don't display local sender or destination tables unless
541 there is data to show.
542 Added average volumes into the top table text output.
543
544SC/04 Eximstats V1.46
545 Collect data on the number of addresses (recipients)
546 as well as the number of messages.
547
548SC/05 Eximstats V1.47
549 Added 'Message too big' to the list of mail rejection
550 reasons (thanks to Marco Gaiarin).
551
552SC/06 Eximstats V1.48
553 Mainlog lines which have GMT offsets and are too short to
554 have a flag are now skipped.
555
556SC/07 Eximstats V1.49 (Alain Williams)
557 Added the -emptyok flag.
558
559SC/08 Eximstats V1.50
560 Fixes for obtaining the IP address from reject messages.
561
0ea2a468
JJ
562JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
563 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
564 whitesspace changes from 4.64-PH/27
565
566JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
567 match 4.64-PH/13
568
569JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
570 are found, allow negative numbers in numeric criteria)
571
572JJ/06 exipick.20061117.2, added new $message_body_missing variable
573
574JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
575 to match changes made in 4.64-PH/43
576
8a10f5a4
PH
577PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
578
30e18802
PH
579PH/47 Put in an explicit test for a DNS lookup of an address record where the
580 "domain" is actually an IP address, and force a failure. This locks out
581 those revolvers/nameservers that support "A-for-A" lookups, in
582 contravention of the specifications.
583
55728a4f
PH
584PH/48 When a host name was looked up from an IP address, and the subsequent
585 forward lookup of the name timed out, the host name was left in
586 $sender_host_name, contrary to the specification.
d7d7b289 587
d7837193
PH
588PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
589 restricted to single-key lookups, Exim was not diagnosing an error if
590 * or *@ was used with a query-style lookup.
591
87054a31
PH
592PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
593
ea2c01d2
MH
594MH/01 local_scan ABI version incremented to 1.1. It should have been updated
595 long ago, but noone interested enough thought of it. Let's just say that
596 the "1.1" means that there are some new functions that weren't there at
597 some point in the past.
598
e4fa6968
PH
599PH/51 Error processing for expansion failure of helo_data from an smtp
600 transport during callout processing was broken.
601
56f5d9bd
PH
602PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
603 tested/used via the -bh/-bhc/-bs options.
604
922e1c28
PH
605PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
606 bug, fixed in subsequent PCRE releases).
607
21eb6e72
PH
608PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
609 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
610
a0540757
PH
611PH/55 Check for a ridiculously long file name in exim_dbmbuild.
612
944e9e9c 613
478be7b0
SC
614Exim version 4.63
615-----------------
616
617SC/01 Use a glob alias rather than an array ref in eximstats generated
618 parser. This improves both readability and performance.
619
620SC/02 Collect SpamAssassin and rejection statistics in eximstats.
621 Don't display local sender or destination tables in eximstats unless
622 there is data to show.
623 Added average volumes into the eximstats top table text output.
624
625SC/03 Collect data on the number of addresses (recipients) as well
626 as the number of messages in eximstats.
627
2b965a65
TF
628TF/01 Correct an error in the documentation for the redirect router. Exim
629 does (usually) call initgroups() when daemonizing.
478be7b0 630
45b91596
PH
631TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
632 with consistent privilege compared to when running as a daemon.
478be7b0 633
c59f5781
TF
634TF/03 Note in the spec that $authenticated_id is not set for local
635 submissions from trusted users.
636
90fc3069
TF
637TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
638 Thanks to Dean Brooks <dean@iglou.com> for the patch.
639
6083aca0
TF
640TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
641 by adding some example configuration directives to the default
642 configuration file. A little bit of work is required to uncomment the
643 directives and define how usernames and passwords are checked, but
644 there is now a framework to start from.
645
765b530f
PH
646PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
647 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
648 without this. I don't know how relevant this is to other LDAP libraries.
649
4e167a8c
PH
650PH/02 Add the verb name to the "unknown ACL verb" error.
651
4608d683
PH
652PH/03 Magnus Holmgren's patch for filter_prepend_home.
653
b8dc3e4a
PH
654PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
655
5418e93b
PH
656PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
657 directory not expanded when it should be if an expanded home directory
658 was set for the address (which is overridden by the transport).
659
b4a9bda2
PH
660PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
661 libradius.
662
45b91596
PH
663PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
664 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
665 because it is too late at that time, and has no effect.
666
5547e2c5
PH
667PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
668 security issue with \' (bugzilla #107). I could not use the
669 PQescapeStringConn() function, because it needs a PGconn value as one of
670 its arguments.
671
dbcef0ea
PH
672PH/08 When testing addresses using -bt, indicate those final addresses that
673 are duplicates that would not cause an additional delivery. At least one
674 person was confused, thinking that -bt output corresponded to deliveries.
675 (Suppressing duplicates isn't a good idea as you lose the information
676 about possibly different redirections that led to the duplicates.)
677
25257489
PH
678PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
679 systems where poll() doesn't work, in particular OS X.
680
c816d124
PH
681PH/10 Added more information to debugging output for retry time not reached.
682
a9ccd69a
PH
683PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
684 operations in malware.c.
685
75fa1910
PH
686PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
687 signatures.
688
a7d7aa58
PH
689PH/13 If write_rejectlog was set false when logging was sent to syslog with
690 syslog_duplication set false, log lines that would normally be written
691 both the the main log and to the reject log were not written to syslog at
692 all.
693
42119b09
PH
694PH/14 In the default configuration, change the use of "message" in ACL warn
695 statements to "add_header".
696
41609df5
PH
697PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
698 not followed by a command (e.g. "seen endif").
699
a5bd321b
PH
700PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
701 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
702 latter.
703
e85a7ad5 704PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
705 so that it is now:
706
e85a7ad5
PH
707 ${if or { \
708 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
709 { match{$h_precedence:}{(?i)bulk|list|junk} } \
710 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
711 }{no}{yes}}
712
e85a7ad5
PH
713 The Auto-Submitted: and various List- headers are standardised, whereas I
714 don't think Precedence: ever was.
5dff5817 715
d8fe1c03
PH
716PH/18 Refactored debugging code in route_finduser() to show more information,
717 in particular, the error code if getpwnam() issues one.
718
16282d2b
PH
719PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
720 This is apparently needed in addition to the PH/07 change above to avoid
721 any possible encoding problems.
722
35d40a98
PH
723PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
724 but not after initializing Perl.
725
034d99ab
PH
726PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
727 output them only if debugging. By default they are written stderr,
728 apparently, which is not desirable.
729
6ec97b1b
PH
730PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
731 queries.
732
e22ca4ac
JJ
733JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
734 --not options
735
736JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
737
33d73e3b
PH
738PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
739 authenticated or an ident call has been made. Suppress the default
740 values for $authenticated_id and $authenticated_sender (but permit -oMai
741 and -oMas) when testing with -bh.
742
9ecb03f3
PH
743PH/24 Re-jigged the order of the tests in the default configuration so that the
744 tests for valid domains and recipients precede the DNS black list and CSA
745 tests, on the grounds that those ones are more expensive.
746
084efe8d
PH
747PH/25 Exim was not testing for a space following SMTP commands such as EHLO
748 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
749 This bug exists in every version of Exim that I still have, right back to
750 0.12.
751
366fc9f0
PH
752PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
753 However, an attempt to turn on case-sensitivity in a regex key by
754 including (?-i) didn't work because the subject string was already
755 lowercased, and the effects were non-intuitive. It turns out that a
756 one-line patch can be used to allow (?-i) to work as expected.
757
c59f5781 758
c887c79e
TF
759Exim version 4.62
760-----------------
761
762TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
763 other effects) broke the use of negated acl sub-conditions.
764
1cce3af8
PH
765PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
766 patch).
767
afb3eaaf
PH
768PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
769 "Deny" causes Exim to reject the incoming connection with a 554 error.
770 Unfortunately, if there is a major crisis, such as a disk failure,
771 tcp-wrappers gives "deny", whereas what one would like would be some
772 kind of temporary error. A kludge has been added to help with this.
773 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
774 554 error is used if errno is still zero or contains ENOENT (which occurs
775 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
776 451 error is used.
777
e173618b
PH
778PH/03 Add -lutil to the default FreeBSD LIBS setting.
779
dd16e114
PH
780PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
781 errors. Otherwise a message that provokes a temporary error (when other
782 messages do not) can cause a whole host to time out.
783
f7fd3850
PH
784PH/05 Batch deliveries by appendfile and pipe transports did not work when the
785 addresses were routed directly to files or pipes from a redirect router.
786 File deliveries just didn't batch; pipe deliveries might have suffered
787 odd errors.
788
d87df92c
PH
789PH/06 A failure to get a lock for a hints database would erroneously always say
790 "Failed to get write lock", even when it was really a read lock.
791
7e9f683d
PH
792PH/07 The appendfile transport was creating MBX lock files with a fixed mode
793 of 0600. This has been changed to use the value of the lockfile_mode
794 option (which defaults to 0600).
795
bfad5236
PH
796PH/08 Applied small patch from the Sieve maintainer.
797
01c490df
PH
798PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
799 folder from quota calculations, a direct delivery into this folder messed
800 up the contents of the maildirsize file. This was because the regex was
801 used only to exclude .Trash (or whatever) when the size of the mailbox
802 was calculated. There was no check that a delivery was happening into an
803 excluded directory. This bug has been fixed by ignoring all quota
804 processing for deliveries into excluded directories.
805
d6629cdc
PH
806PH/10 Added the maildirfolder_create_regex option to appendfile.
807
1cce3af8 808
214e2000
PH
809Exim version 4.61
810-----------------
811
812PH/01 The code for finding all the local interface addresses on a FreeBSD
813 system running IPv6 was broken. This may well have applied to all BSD
814 systems, as well as to others that have similar system calls. The broken
815 code found IPv4 interfaces correctly, but gave incorrect values for the
816 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
817 that it would not match correctly against @[] and not recognize the IPv6
818 addresses as local.
819
f9daeae0
PH
820PH/02 The ipliteral router was not recognizing addresses of the form user@
821 [ipv6:....] because it didn't know about the "ipv6:" prefix.
822
7e66e54d
PH
823PH/03 Added disable_ipv6.
824
c8ea1597
PH
825PH/04 Changed $reply_address to use the raw form of the headers instead of the
826 decoded form, because it is most often used to construct To: headers
827 lines in autoreplies, and the decoded form may well be syntactically
828 invalid. However, $reply_address has leading white space removed, and all
829 newlines turned into spaces so that the autoreply transport does not
830 grumble.
831
911f6fde
PH
832PH/05 If group was specified without a user on a router, and no group or user
833 was specified on a transport, the group from the router was ignored.
834
47ca6d6c
PH
835PH/06 Increased the number of ACL variables to 20 of each type, and arranged
836 for visible compile-time settings that can be used to change these
837 numbers, for those that want even more. Backwards compatibility with old
838 spool files has been maintained. However, going back to a previous Exim
839 release will lost any variables that are in spool files.
840
ed0e9820
PH
841PH/07 Two small changes when running in the test harness: increase delay when
842 passing a TCP/IP connection to a new process, in case the original
843 process has to generate a bounce, and remove special handling of
844 127.0.0.2 (sic), which is no longer necessary.
845
eff37e47
PH
846PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
847 be the same on different OS.
848
1921d2ea
PH
849PH/09 Moved a debug statement in filter processing to avoid a race problem when
850 testing.
851
b3f69ca8
JJ
852JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
853 whether --show-vars was specified or not
854
855JJ/02 exipick: Added support for new ACL variable spool format introduced
856 in 4.61-PH/06
857
424a1c63
PH
858PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
859 syntactically invalid From: or Reply-to: line, and a filter used this to
860 generate an autoreply, and therefore failed to obtain an address for the
861 autoreply, Exim could try to deliver to a non-existent relative file
862 name, causing unrelated and misleading errors. What now happens is that
863 it logs this as a hard delivery error, but does not attempt to create a
864 bounce message.
865
7a100415
PH
866PH/11 The exinext utility has a -C option for testing purposes, but although
867 the given file was scanned by exinext itself; it wasn't being passed on
868 when Exim was called.
869
19b9dc85
PH
870PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
871 an end-of-file indication when reading a command response.
872
309bd837
PH
873PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
874 compiled. In many other places in Exim, IPv6 addresses are always
875 recognized, so I have changed this. It also means that IPv4 domain
876 literals of the form [IPV4:n.n.n.n] are now always recognized.
877
59e82a2a
PH
878PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
879 used if the router is not running as root, for example, when verifying at
880 ACL time, or when using -bh. The debugging output from this situation was
881 non-existent - all you got was a failure to exec. I have made two
882 changes:
883
884 (a) Failures to set uid/gid, the current directory, or a process leader
885 in a subprocess such as that created by queryprogram now generate
886 suitable debugging ouput when -d is set.
887
888 (b) The queryprogram router detects when it is not running as root,
889 outputs suitable debugging information if -d is set, and then runs
890 the subprocess without attempting to change uid/gid.
891
9edc04ce
PH
892PH/15 Minor change to Makefile for building test_host (undocumented testing
893 feature).
894
1349e1e5
PH
895PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
896 additional section of a DNS packet that returns MX or SRV records.
897 Instead, it always explicitly searches for A/AAAA records. This avoids
898 major problems that occur when a DNS server includes only records of one
899 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
900 fixed another bug: if SRV records were looked up and the corresponding
901 address records were *not* found in the additional section, the port
902 values from the SRV records were lost.
903
ea49d0e1
PH
904PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
905 using the correct key (the original address) when searching the retry
906 rules in order to find which one to use for generating the retry hint.
907
064a94c9
PH
908PH/18 If quota_warn_message contains a From: header, Exim now refrains from
909 adding the default one. Similarly, if it contains a Reply-To: header, the
910 errors_reply_to option, if set, is not used.
911
727071f8
PH
912PH/19 When calculating a retry time, Exim used to measure the "time since
913 failure" by looking at the "first failed" field in the retry record. Now
914 it does not use this if it is later than than the arrival time of the
915 message. Instead it uses the arrival time. This makes for better
916 behaviour in cases where some deliveries succeed, thus re-setting the
917 "first failed" field. An example is a quota failure for a huge message
918 when small messages continue to be delivered. Without this change, the
919 "time since failure" will always be short, possible causing more frequent
920 delivery attempts for the huge message than are intended.
dd16e114 921 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 922
f78eb7c6
PH
923PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
924 $1, $2, $3) because the numerical variables can be reset during some
925 expansion items (e.g. "match"), thereby losing the authentication data.
926
21c28500
PH
927PH/21 Make -bV show the size of off_t variables so that the test suite can
928 decide whether to run tests for quotas > 2G.
929
930PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
931 mailbox_size, and mailbox_filecount in the appendfile transport. If a
932 filecount value is greater than 2G or if a quota value is greater than 2G
933 on a system where the size of off_t is not greater than 4, a panic error
934 is given.
935
1688f43b
PH
936PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
937 never match. The debug and -bh output now contains an explicit error
938 message indicating a malformed IPv4 address or mask.
939
940PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
941 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
942 PH/23 above applies.
943
9675b384
PH
944PH/25 Do not write to syslog when running in the test harness. The only
945 occasion when this arises is a failure to open the main or panic logs
946 (for which there is an explicit test).
947
6a3f1455
PH
948PH/26 Added the /no_tell option to "control=freeze".
949
dac79d3e
PH
950PH/27 If a host name lookup failed very early in a connection, for example, if
951 the IP address matched host_lookup and the reverse lookup yielded a name
952 that did not have a forward lookup, an error message of the form "no IP
953 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
954 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 955
5977a0b3
PH
956PH/28 An enabling patch from MH: add new function child_open_exim2() which
957 allows the sender and the authenticated sender to be set when
958 submitting a message from within Exim. Since child_open_exim() is
959 documented for local_scan(), the new function should be too.
960
c91535f3
PH
961PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
962 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
963 results in an empty string is now treated as unset.
964
0d46a8c8
PH
965PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
966
278c6e6c
PH
967PH/31 Added sender_verify_fail logging option.
968
2cbb4081
PH
969PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
970 needed by RFC 822 but not by RFC 2822 was commented out. I have now
971 tidied the source and removed it altogether.
972
3eef829e
PH
973PH/33 When a queue run was abandoned because the load average was too high, a
974 log line was always written; now it is written only if the queue_run log
975 selector is set. In addition, the log line for abandonment now contains
976 information about the queue run such as the pid. This is always present
977 in "start" and "stop" lines but was omitted from the "abandon" line.
978
1ab95fa6
PH
979PH/34 Omit spaces between a header name and the colon in the error message that
980 is given when verify = headers_syntax fails (if there are lots of them,
981 the message gets confusing).
982
230205fc
PH
983PH/35 Change the default for dns_check_names_pattern to allow slashes within
984 names, as there are now some PTR records that contain slashes. This check
985 is only to protect against broken name servers that fall over on strange
986 characters, so the fact that it applies to all lookups doesn't matter.
987
75e0e026
PH
988PH/36 Now that the new test suite is complete, we can remove some of the
989 special code in Exim that was needed for the old test suite. For example,
990 sorting DNS records because real resolvers return them in an arbitrary
991 order. The new test suite's fake resolver always returns records in the
992 same order.
993
994PH/37 When running in the test harness, use -odi for submitted messages (e.g.
995 bounces) except when queue_only is set, to avoid logging races between
996 the different processes.
997
145396a6
PH
998PH/38 Panic-die if .include specifies a non-absolute path.
999
3cd34f13
PH
1000PH/39 A tweak to the "H" retry rule from its user.
1001
11121d3d
JJ
1002JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1003 a label. They prevented compilation on older perls.
1004
1005JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1006 a warning to be raised on newish perls.
1007
1008JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1009 on queue. Changes to match documented behaviour of showing count of
1010 messages matching specified criteria.
1011
8def5aaf
PH
1012PH/40 Changed the default ident timeout from 30s to 5s.
1013
929ba01c
PH
1014PH/41 Added support for the use of login_cap features, on those BSD systems
1015 that have them, for controlling the resources used by pipe deliveries.
1016
2632889e
PH
1017PH/42 The content-scanning code uses fopen() to create files in which to put
1018 message data. Previously it was not paying any attention to the mode of
1019 the files. Exim runs with umask(0) because the rest of the code creates
1020 files with open(), and sets the required mode explicitly. Thus, these
1021 files were ending up world-writeable. This was not a big issue, because,
1022 being within the spool directory, they were not world-accessible. I have
1023 created a function called modefopen, which takes an additional mode
1024 argument. It sets umask(777), creates the file, chmods it to the required
1025 mode, then resets the umask. All the relevant calls to fopen() in the
1026 content scanning code have been changed to use this function.
1027
944a9c55
PH
1028PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1029 to 24 hours. This avoids potential overflow problems when processing G
1030 and H retry rules. I suspect nobody ever tinkers with this value.
1031
4a23603b
PH
1032PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1033
4730f942
PH
1034PH/45 When the plaintext authenticator is running as a client, the server's
1035 challenges are checked to ensure they are valid base64 strings. By
1036 default, the authentication attempt is cancelled if an invalid string is
1037 received. Setting client_ignore_invalid_base64 true ignores these errors.
1038 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1039 they are received. Thus, the responses can be made to depend on the
1040 challenges. If an invalid string is ignored, an empty string is placed in
1041 the variable.
1042
30dba1e6
PH
1043PH/46 Messages that are created by the autoreply transport now contains a
1044 References: header, in accordance with RFCs 2822 and 3834.
1045
382afc6b
PH
1046PH/47 Added authenticated_sender_force to the smtp transport.
1047
a86229cf
PH
1048PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1049
50c99ba6
PH
1050PH/49 Installed latest patch from the Sieve maintainer.
1051
d35e429d
PH
1052PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1053 was also set, the appendfile transport was unnecessarily scanning a
1054 directory of message files (e.g. for maildir delivery) to find the count
1055 of files (along with the size), even though it did not need this
1056 information. It now does the scan only if it needs to find either the
1057 size of the count of files.
1058
f90d018c
PH
1059PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1060
75def545
PH
1061PH/52 Two bugs concerned with error handling when the smtp transport is
1062 used in LMTP mode:
1063
1064 (i) Exim was not creating retry information for temporary errors given
1065 for individual recipients after the DATA command when the smtp transport
1066 was used in LMTP mode. This meant that they could be retried too
1067 frequently, and not timed out correctly.
1068
1069 (ii) Exim was setting the flag that allows error details to be returned
1070 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1071 recipients that were returned after the DATA command.
1072
1073PH/53 This is related to PH/52, but is more general: for any failing address,
1074 when detailed error information was permitted to be returned to the
1075 sender, but the error was temporary, then after the final timeout, only
1076 "retry timeout exceeded" was returned. Now it returns the full error as
1077 well as "retry timeout exceeded".
1078
c46782ef
PH
1079PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1080 do this, and (what is worse) MTAs that accept it.
1081
71fafd95
PH
1082PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1083 will now be deprecated.
1084
2c5db4fd
PH
1085PH/56 New os.c-cygwin from the Cygwin maintainer.
1086
9cf6b11a
JJ
1087JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1088 formats (previously only available in exim formats via -bpr, -bpru,
1089 and -bpra. Now also available in native and exiqgrep formats)
1090
1091JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1092 with very large, slow to parse queues
1093
1094JJ/08 exipick: added ! as generic prefix to negate any criteria format
1095
1096JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1097
898d150f
PH
1098PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1099 responses to authentication challenges, though it was showing the
1100 challenges; (ii) I've removed the CR characters from the debug output for
1101 SMTP output lines.
1102
46218253
PH
1103PH/58 Allow for the insertion of a newline as well as a space when a string
1104 is turned into more than one encoded-word during RFC 2047 encoding. The
1105 Sieve code now uses this.
1106
e97957bc
PH
1107PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1108 data_4xx, lost_connection, tls_required.
1109
81e509d7
PH
1110PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1111 message was being sent as an SMTP response.
1112
3d240ff7
PH
1113PH/61 Add -l and -k options to exicyclog.
1114
b37c4101
PH
1115PH/62 When verifying, if an address was redirected to one new address, so that
1116 verification continued, and the new address failed or deferred after
1117 having set something in $address_data, the value of $address_data was not
1118 passed back to the ACL. This was different to the case when no
1119 redirection occurred. The value is now passed back in both cases.
1120
79378e0f
PH
1121PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1122 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1123 use login_cap.h, so on its own it isn't the distinguishing feature. The
1124 new name refers directly to the setclassresources() function.
1125
e49c7bb4
PH
1126PH/65 Added configuration files for NetBSD3.
1127
d114ec46
PH
1128PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1129
f3d7df6c
PH
1130PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1131 is preferred over IPv4.
1132
715ab376
PH
1133PH/68 The bounce_return_message and bounce_return_body options were not being
1134 honoured for bounces generated during the reception of non-SMTP messages.
1135 In particular, this applied to messages rejected by the ACL. This bug has
1136 been fixed. However, if bounce_return_message is true and bounce_return_
1137 body is false, the headers that are returned for a non-SMTP message
1138 include only those that have been read before the error was detected.
1139 (In the case of an ACL rejection, they have all been read.)
1140
6b31b150
PH
1141PH/69 The HTML version of the specification is now built in a directory called
1142 spec_html instead of spec.html, because the latter looks like a path with
1143 a MIME-type, and this confuses some software.
1144
1145PH/70 Catch two compiler warnings in sieve.c.
1146
d515a917
PH
1147PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1148 function verify_get_ident() calls ip_connect() to connect a socket, but
1149 if the "connect()" function timed out, ip_connect() used to close the
1150 socket. However, verify_get_ident() also closes the socket later, and in
1151 between Exim writes to the log, which may get opened at this point. When
1152 the socket was closed in ip_connect(), the log could get the same file
1153 descriptor number as the socket. This naturally causes chaos. The fix is
1154 not to close the socket in ip_connect(); the socket should be closed by
1155 the function that creates it. There was only one place in the code where
1156 this was missing, in the iplookup router, which I don't think anybody now
1157 uses, but I've fixed it anyway.
1158
9b8fadde
PH
1159PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1160 well as to direct DNS lookups. Otherwise the handling of names in host
1161 lists is inconsistent and therefore confusing.
1162
214e2000 1163
5de37277
PH
1164Exim version 4.60
1165-----------------
1166
cc38ddbf
PH
1167PH/01 Two changes to the default runtime configuration:
1168
1169 (1) Move the checks for relay_from_hosts and authenticated clients from
1170 after to before the (commented out) DNS black list checks.
1171
1172 (2) Add control=submission to the relay_from_hosts and authenticated
1173 clients checks, on the grounds that messages accepted by these
1174 statements are most likely to be submissions.
5de37277 1175
72fdd6ae
PH
1176PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1177
1178 (1) Generate an error if the third argument for the ${prvs expansion is
1179 not a single digit.
1180
1181 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1182 string.
1183
1184 (3) Reset the variables that are obtained from the first argument of
1185 ${prvscheck and used in the second argument before leaving the code,
1186 because their memory is reclaimed, so using them afterwards may do
1187 silly things.
1188
1189 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1190 one (it's much easier than Tom thought :-).
1191
1192 (5) Because of (4), we can now allow for the use of $prvscheck_result
1193 inside the third argument.
cb9328de 1194
cb741023
PH
1195PH/03 For some reason, the default setting of PATH when running a command from
1196 a pipe transport was just "/usr/bin". I have changed it to
1197 "/bin:/usr/bin".
1198
f174f16e
PH
1199PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1200 anything to be listed in the output from -bV.
b2f5a032 1201
c25242d7
PH
1202PH/05 When a filter generated an autoreply, the entire To: header line was
1203 quoted in the delivery log line, like this:
1204
1205 => >A.N.Other <ano@some.domain> <original@ddress> ...
1206
1207 This has been changed so that it extracts the operative address. There
1208 may be more than one such address. If so, they are comma-separated, like
1209 this:
1210
1211 => >ano@some.domain,ona@other.domain <original@ddress> ...
1212
82c19f95
PH
1213PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1214 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1215 not being looked up in the rDNS to get a host name, Exim was showing the
1216 IP address twice in Received: lines, even though the IP addresses were
1217 identical. For example:
1218
1219 Received: from [1.2.3.4] (helo=[1.2.3.4])
1220
1221 However, if the real host name was known, it was omitting the HELO data
1222 if it matched the actual IP address. This has been tidied up so that it
1223 doesn't show the same IP address twice.
1224
d7ffbc12
PH
1225PH/07 When both +timestamp and +memory debugging was on, the value given by
1226 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1227 called by the debug printing, thereby overwriting the timestamp buffer.
1228 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1229
9f526266
PH
1230PH/08 When the original message was included in an autoreply transport, it
1231 always said "this is a copy of the message, including all the headers",
1232 even if body_only or headers_only was set. It now gives an appropriate
1233 message.
1234
87fcc8b9
PH
1235PH/09 Applied a patch from the Sieve maintainer which:
1236
1237 o fixes some comments
1238 o adds the (disabled) notify extension core
1239 o adds some debug output for the result of if/elsif tests
1240 o points to the current vacation draft in the documentation
1241 and documents the missing references header update
1242
1243 and most important:
1244
1245 o fixes a bug in processing the envelope test (when testing
1246 multiple envelope elements, the last element determinted the
1247 result)
1248
456682f5
PH
1249PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1250 Electronic Mail") by including:
1251
1252 Auto-submitted: auto-generated
1253
1254 in the messages that it generates (bounce messages and others, such as
1255 warnings). In the case of bounce messages for non-SMTP mesages, there was
1256 also a typo: it was using "Auto_submitted" (underscore instead of
1257 hyphen). Since every message generated by Exim is necessarily in response
1258 to another message, thes have all been changed to:
1259
1260 Auto-Submitted: auto-replied
1261
1262 in accordance with these statements in the RFC:
1263
1264 The auto-replied keyword:
1265
1266 - SHOULD be used on messages sent in direct response to another
1267 message by an automatic process,
1268
1269 - MUST NOT be used on manually-generated messages,
1270
1271 - MAY be used on Delivery Status Notifications (DSNs) and Message
1272 Disposition Notifications (MDNs),
1273
1274 - MUST NOT be used on messages generated by automatic or periodic
1275 processes, except for messages which are automatic responses to
1276 other messages.
1277
3e46c1aa
PH
1278PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1279 to the default Received: header definition.
456682f5 1280
49826d12
PH
1281PH/12 Added log selector acl_warn_skipped (default on).
1282
eba0c039
PH
1283PH/13 After a successful wildlsearch lookup, discard the values of numeric
1284 variables because (a) they are in the wrong storage pool and (b) even if
1285 they were copied, it wouldn't work properly because of the caching.
1286
a0d6ba8a
PH
1287PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1288 checking when decoding. Apparently there are clients that generate
1289 overlong encoded strings. Why am I not surprised?
1290
f0917727
PH
1291PH/15 If the first argument of "${if match_address" was not empty, but did not
1292 contain an "@" character, Exim crashed. Now it writes a panic log message
1293 and treats the condition as false.
1294
096fee00
PH
1295PH/16 In autoreply, treat an empty string for "once" the same as unset.
1296
024bd3c2
PH
1297PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1298 extension "envelope-auth". The code is finished and in agreement with
1299 other implementations, but there is no documentation so far and in fact,
1300 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1301 not changing the active code.
1302
1303 Print executed "if" and "elsif" statements when debugging is used. This
1304 helps a great deal to understand what a filter does.
1305
1306 Document more things not specified clearly in RFC3028. I had all this
1307 sorted out, when out of a sudden new issues came to my mind. Oops."
1308
df199fec
PH
1309PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1310 (Bugzilla #53).
1311
d27f1df3
PH
1312PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1313 canonical form (as documented). However, after a host name lookup from
1314 the IP address, check_host() was doing a simple string comparison with
1315 addresses acquired from the DNS when checking that the found name did
1316 have the original IP as one of its addresses. Since any found IPv6
1317 addresses are likely to be in abbreviated form, the comparison could
1318 fail. Luckily, there already exists a function for doing the comparison
1319 by converting both addresses to binary, so now that is used instead of
1320 the text comparison.
1321
96776534
PH
1322PH/20 There was another similar case to PH/19, when a complete host name was
1323 given in a host list; looking up its IP address could give an abbreviated
1324 form, whereas the current host's name might or might not be abbreviated.
1325 The same fix has been applied.
1326
5de37277 1327
9a799bc0
PH
1328Exim version 4.54
1329-----------------
1330
1331PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1332 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1333 It now does.
1334
99a4b039
PH
1335PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1336 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1337
1338PH/03 Typo: missing ".o" in src/pcre/Makefile.
1339
4b233853
PH
1340PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1341 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1342 Also, for "Auto-Submitted", treat anything other than "no" as
1343 non-personal, in accordance with RFC 3834. (Previously it treated
1344 anything starting "auto-" as non-personal.)
1345
8857ccfd
PH
1346TF/01 The control=submission/name=... option had a problem with syntax
1347 errors if the name included a slash character. The /name= option
1348 now slurps the rest of the string, so it can include any characters
1349 but it must come last in the list of options (after /sender_retain
1350 or /domain=).
1351
433a2980
PH
1352PH/05 Some modifications to the interface to the fake nameserver for the new
1353 testing suite.
1354
3e46c1aa 1355
9a799bc0 1356
e3a311ba
TK
1357Exim version 4.53
1358-----------------
1359
1360TK/01 Added the "success_on_redirect" address verification option. See
1361 NewStuff for rationale and an example.
1362
13b685f9
PH
1363PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1364
395ff96d
PH
1365PH/02 Patch to exigrep to allow it to work on syslog lines.
1366
5b68f6e4
PH
1367PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1368 fread() to skip over the body file's header line, because in Cygwin the
1369 header line is locked and is inaccessible.
1370
1ab52c69
PH
1371PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1372 co-exist for some time) to make it clear that it is the Exim ID that is
1373 referenced, not the Message-ID: header line.
1374
b07e6aa3
PH
1375PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1376 string_format() function, because snprintf() does not exist on all
1377 operating systems.
1378
254e032f
PH
1379PH/06 The use of forbid_filter_existstest now also locks out the use of the
1380 ${stat: expansion item.
1381
3af76a81
PH
1382PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1383 protocol synchronization error", to keep the pedants happy.
1384
2548ba04
PH
1385PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1386 well as for IRIX systems, when gcc is being used. See the host.c source
1387 file for comments.
1388
b6c6011d
PH
1389PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1390
cf39cf57
PH
1391PH/10 Named domain lists were not working if used in a queue_smtp_domains
1392 setting.
1393
f1513293
PH
1394PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1395 transport and to the smtp transport in LMTP mode.
1396
727549a4
PH
1397TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1398
af46795e
PH
1399PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1400 run a filter in a subprocess. This could lead to confusion in subsequent
1401 lookups in the parent process. There should also be a search_tidyup() at
1402 the end of the subprocess.
1403
d7b47fd0
PH
1404PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1405 only if the host matched helo_try_verify_hosts, which caused the
1406 verification to occur when the EHLO/HELO command was issued. The ACL just
1407 tested the remembered result. Now, if a previous verification attempt has
1408 not happened, "verify = helo" does it there and then.
1409
ee744174
JJ
1410JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1411
b582ab87
PH
1412TK/03 Fix log output including CR from clamd.
1413
41a13e0a
PH
1414PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1415 exist provoked a memory error which could cause a segfault.
1416
f625cc5a
PH
1417PH/15 Installed PCRE 6.2
1418
1419PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1420
21f7af35
PH
1421PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1422 of the problem. Specifically, suggested +O2 rather than +O1 for the
1423 HP-UX compiler.
1424
31480e42
PH
1425PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1426
2d280592
PH
1427PH/20 If a delivery was routed to a non-standard port by means of an SRV
1428 record, the port was not correctly logged when the outgoing_port log
1429 selector was set (it logged the transort's default port).
1430
7cd1141b
PH
1431PH/21 Added support for host-specific ports to manualroute, queryprogram,
1432 fallback_hosts, and "hosts" in the smtp transport.
1433
1434PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1435 host errors such as "Connection refused".
1436
750af86e
PH
1437PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1438 authentication with radiusclient 0.4.9:
1439
1440 - Error returned from rc_read_config was caught wrongly
1441 - Username/password not passed on to radius server due to wrong length.
1442
1443 The presumption is that some radiusclient API changes for 4.51/PH/17
1444 were not taken care of correctly. The code is still untested by me (my
1445 Linux distribution still has 0.3.2 of radiusclient), but it was
1446 contributed by a Radius user.
1447
1448PH/24 When doing a callout, the value of $domain wasn't set correctly when
1449 expanding the "port" option of the smtp transport.
1450
4304270b
TK
1451TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1452 while reading a MIME header. Thanks to Tom Hughes for a patch.
1453
750af86e
PH
1454PH/24 Include config.h inside local_scan.h so that configuration settings are
1455 available.
1456
64ffc24f
PH
1457PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1458 that in an ACL for RCPT (for example), you can examine exactly what was
1459 received.
1460
5dd9625b
PH
1461PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1462 commands, but it was not correctly comparing the address with the actual
1463 client host address. Thus, it would show the EHLO address in Received:
1464 header lines when this was not necessary.
1465
5591031b
PH
1466PH/27 Added the % operator to ${eval:}.
1467
ba18e66a
PH
1468PH/28 Exim tries to create and chdir to its spool directory when it starts;
1469 it should be ignoring failures (because with -C, for example, it has lost
1470 privilege). It wasn't ignoring creation failures other than "already
1471 exists".
1472
9cec981f
PH
1473PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1474 -bV or -d is used.
1475
aa2b5c79
PH
1476PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1477 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1478 too many continuations, the temporary file was not being removed, and the
1479 return code was incorrect.
aa2b5c79 1480
48a53b7f
PH
1481PH/31 Missing "BOOL" in function definition in filtertest.c.
1482
1c59d63b
PH
1483PH/32 Applied Sieve patches from the maintainer.
1484
671012da
TK
1485TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1486
1509d3a8
PH
1487PH/33 Added "verify = not_blind".
1488
1489PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1490 Local/Makefile (with some defaults set). These are used in built scripts
1491 such as exicyclog, but they have never been used in the exim_install
1492 script (though there are many overriding facilities there). I have
1493 arranged that the exim_install script now takes note of these two
1494 settings.
1495
1496PH/35 Installed configuration files for Dragonfly.
1497
2fe1a124
PH
1498PH/36 When a locally submitted message by a trusted user did not contain a
1499 From: header, and the sender address was obtained from -f or from an SMTP
1500 MAIL command, and the trusted user did not use -F to supply a sender
1501 name, $originator_name was incorrectly used when constructing a From:
1502 header. Furthermore, $originator_name was used for submission mode
1503 messages from external hosts without From: headers in a similar way,
1504 which is clearly wrong.
1505
8800895a
PH
1506PH/37 Added control=suppress_local_fixups.
1507
ccfdb010
PH
1508PH/38 When log_selector = +received_sender was set, and the addition of the
1509 sender made the log line's construction buffer exactly full, or one byte
1510 less than full, an overflow happened when the terminating "\n" was
1511 subsequently added.
1512
1130bfb0
PH
1513PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1514 when the result of a list match is failure because a DNS lookup failed.
1515
ebcb507f
PH
1516PH/40 RM_COMMAND is now used in the building process.
1517
c35e155c
PH
1518PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1519 the "build-* directories that it finds.
1520
95d1f782
PH
1521PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1522 address in a domain literal was a prefix of an interface address.
1523
fd6de02e
PH
1524PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1525 when verifying a sender address, unless rewrite_headers is false.
1526
58de37c5
PH
1527PH/44 Wrote a long comment about why errors_to addresses are verified as
1528 recipients, not senders.
1529
261cf466
TF
1530TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1531 the ratelimit ACL was added.
1532
3ee512ff
PH
1533PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1534
e08c430f
PH
1535PH/46 Added extra information about PostgreSQL errors to the error string.
1536
bef5a11f
PH
1537PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1538 avoiding the need to install special zones in a real server. This is
1539 backwards compatible; if it can't find the fake resolver, it drops back.
1540 Thus, both old and new test suites can be run.
1541
7546de58
TF
1542TF/02 Added util/ratelimit.pl
1543
e5d5a95f
TF
1544TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1545 clock is set back in time.
1546
2e88a017
TF
1547TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1548 Candler <B.Candler@pobox.com>.
1549
a5f65aa4
TF
1550TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1551 OK for addresses that are the result of redirections.
1552
e7726cbf
PH
1553PH/48 A number of further additions for the benefit of the new test suite,
1554 including a fake gethostbyname() that interfaces to the fake DNS resolver
1555 (see PH/47 above).
1556
a7fdad5b
TF
1557TF/06 The fix for widen_domains has also been applied to qualify_single and
1558 search_parents which are the other dnslookup options that can cause
1559 header rewrites.
1560
6af56900
PH
1561PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1562 type ("H").
1563
0925ede6
PH
1564PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1565
66afa403
TF
1566TF/07 Exim produced the error message "an SRV record indicated no SMTP
1567 service" if it encountered an MX record with an empty target hostname.
1568 The message is now "an MX or SRV record indicated no SMTP service".
1569
0154e85a
TF
1570TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1571 if the DNS of the sending site is misconfigured. This is quite a
1572 common situation. This change restores the behaviour of treating a
1573 helo verification defer as a failure.
1574
16f12c76
PH
1575PH/51 If self=fail was set on a router, the bounce message did not include the
1576 actual error message.
1577
bbe902f0 1578
e5a9dba6
PH
1579Exim version 4.52
1580-----------------
1581
1582TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1583
22c3b60b
PH
1584PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1585 command itself ended in error, the underlying message about the transport
1586 filter timeout was being overwritten with the pipe command error. Now the
1587 underlying error message should be appended to the second error message.
1588
06a9b4b5
PH
1589TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1590
c1ac6996
PH
1591PH/02 Reduce the amount of output that "make" produces by default. Full output
1592 can still be requested.
1593
9c7a242c
PH
1594PH/03 The warning log line about a condition test deferring for a "warn" verb
1595 was being output only once per connection, rather than after each
1596 occurrence (because it was using the same function as for successful
1597 "warn" verbs). This seems wrong, so I have changed it.
1598
87ba3f5f
PH
1599TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1600 it should not have, which might have caused a crash in the right
1601 circumstances, but probably never did.
1602
1603PH/04 Installed a modified version of Tony Finch's patch to make submission
1604 mode fix the return path as well as the Sender: header line, and to
1605 add a /name= option so that you can make the user's friendly name appear
1606 in the header line.
1607
29aba418
TF
1608TF/03 Added the control = fakedefer ACL modifier.
1609
fe0dab11
TF
1610TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1611 Mark Lowes for thorough testing.
870f6ba8 1612
11d337a4
TK
1613TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1614
1615TK/03 Merged latest SRS patch from Miles Wilton.
1616
415c8f3b
PH
1617PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1618 with the definition in sysexits.h (which is #included earlier).
1619 Fortunately, Exim does not actually use EX_OK. The code used to try to
1620 preserve the sysexits.h value, by assumimg that macro definitions were
1621 scanned for macro replacements. I have been disabused of this notion,
1622 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1623
958541e9
PH
1624PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1625 in the smtp transport. When a block could not be written in a single
1626 write() function, the timeout was being re-applied to each part-write.
1627 This seems wrong - if the receiver was accepting one byte at a time it
1628 would take for ever. The timeout is now adjusted when this happens. It
1629 doesn't have to be particularly precise.
1630
c206415f
TK
1631TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1632 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1633
2a4be8f9
PH
1634PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1635 without a domain if the check to <postmaster@domain> fails.
1636
1cba11c5
SC
1637SC/01 Eximstats: added -xls and the ability to specify output files
1638 (patch written by Frank Heydlauf).
1639
1640SC/02 Eximstats: use FileHandles for outputing results.
1641
1642SC/03 Eximstats: allow any combination of xls, txt, and html output.
1643
1644SC/04 Eximstats: fixed display of large numbers with -nvr option
1645
1646SC/05 Eximstats: fixed merging of reports with empty tables.
1647
1648SC/06 Eximstats: added the -include_original_destination flag
1649
1650SC/07 Eximstats: removed tabs and trailing whitespace.
1651
1005d00e
TK
1652TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1653
1654TK/06 MBOX spool code: Add real "From " MBOX separator line
1655 so the .eml file is really in mbox format (even though
1656 most programs do not really care). Patch from Alex Miller.
1657
1658TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1659 The latter is generated from $received_to and is only set if the
1660 message has one envelope recipient. SA can use these headers,
1661 obviously out-of-the-box. Patch from Alex Miller.
1662
9b4768fa
PH
1663PH/08 The ${def test on a variable was returning false if the variable's
1664 value was "0", contrary to what the specification has always said!
1665 The result should be true unless the variable is empty.
1666
1667PH/09 The syntax error of a character other than { following "${if
1668 def:variable_name" (after optional whitespace) was not being diagnosed.
1669 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1670 accidental colon was present, for example, could give incorrect results.
1671
0d7eb84a
PH
1672PH/10 Tidied the code in a number of places where the st_size field of a stat()
1673 result is used (not including appendfile, where other changes are about
1674 to be made).
1675
1676PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1677 This involved changing a lot of size variables from int to off_t. It
1678 should work with maildirs and everything.
1679
40727bee
TK
1680TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1681 spamd dying while we are connected to it.
1682
554d2369
TF
1683TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1684 <jgh@wizmail.org>
1685
1f922db1
PH
1686PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1687 function for BDB 4.3.
1688
ef213c3b
PH
1689PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1690
8ac170f3
PH
1691PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1692 the sources for PCRE have been re-arranged and more files are now
1693 involved.
1694
b1c749bb
PH
1695PH/15 The code I had for printing potentially long long variables in PH/11
1696 above was not the best (it lost precision). The length of off_t variables
1697 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1698 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1699 to be "long long int" or "long int". This is needed for the internal
1700 formatting function string_vformat().
b1c749bb 1701
4aac9b49
PH
1702PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1703 the configuration file to be ":syslog", then the script "guesses" where
1704 the logs files are, rather than using the compiled in default. In our
1705 case the guess is not the same as the compiled default, so the script
1706 suddenly stopped working when I started to use syslog. The patch checks
1707 to see if log_file_path is "". If so, it attempts to read it from exim
1708 with no configuration file to get the compiled in version, before it
1709 falls back to the previous guessing code."
1710
294520c8
TK
1711TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1712 implementing BATV in an Exim configuration. See NewStuff for the gory
1713 details.
1714
5bd022fe
PH
1715PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1716 Makefile that are specific to HP-UX.
1717
90e9ce59
PH
1718PH/18 If the "use_postmaster" option was set for a recipient callout together
1719 with the "random" option, the postmaster address was used as the MAIL
1720 FROM address for the random test, but not for the subsequent recipient
1721 test. It is now used for both.
1722
5ea81592
PH
1723PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1724 patch removes a few documentation additions to RFC 3028, because the
1725 latest draft now contains them. It adds the new en;ascii-case comparator
1726 and a new error check for 8bit text in MIME parts. Comparator and
1727 require names are now matched exactly. I enabled the subaddress
1728 extension, but it is not well tested yet (read: it works for me)."
1729
c6c2dc1d
PH
1730PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1731 rework some of the code of TK/09 above to avoid the hardwired use of
1732 "%lld" and "long long". Replaced the call to snprintf() with a call to
1733 string_vformat().
1734
fffffe4c
PH
1735PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1736 records point to non-existent hosts", "retry timeout exceeded", and
1737 "retry time not reached for any host after a long failure period".
ca02eafb 1738
9a26b6b2
PH
1739PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1740 experimental DomainKeys support:
1741
1742 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1743 (2) On an error such as an illegally used "control", the wrong name for
1744 the control was given.
1745
1746 These problems did NOT occur unless DomainKeys support was compiled.
1747
4aee0225
PH
1748PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1749
32d668a5
PH
1750PH/24 Added ${if match_ip condition.
1751
8187c3f3
PH
1752PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1753 databases so that it will be absolutely obvious if a crash occurs in the
1754 DB library. This is a regular occurrence (often caused by mis-matched
1755 db.h files).
1756
ff790e47 1757PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1758 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1759 picked up on a user's system that detects such things. There doesn't seem
1760 to be a gcc warning option for this - only an attribute that has to be
1761 put on the function's prototype. It seems that in Fedora Core 4 they have
1762 set this on a number of new functions. No doubt there will be more in due
1763 course.
ff790e47 1764
5417f6d1
PH
1765PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1766 specify a transport. However, if an address that was verified by such a
1767 router was the subject of a callout, Exim crashed because it tried to
1768 read the rcpt_include_affixes from the non-existent transport. Now it
1769 just assumes that the setting of that option is false. This bug was
1770 introduced by 4.51/PH/31.
1771
59cf8544
PH
1772PH/28 Changed -d+all to exclude +memory, because that information is very
1773 rarely of interest, but it makes the output a lot bigger. People tend to
1774 do -d+all out of habit.
1775
e7ad8a65
PH
1776PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1777 code in os-type was giving problems when libc.so lives in lib64, like on
1778 x86_64 Fedora Core.
1779
ade42478
PH
1780PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1781 aren't the modern standard, and it seems that some systems' include files
1782 don't always have them. Exim was already checking for some of the newer
1783 ones like T_AAAA, and defining it itself. I've added checks for all the
1784 record types that Exim uses.
1785
182ad5cf
PH
1786PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1787 not automatically generating a new one, as it is supposed to. This
1788 prevented TLS from working. If the file did exist, but contained invalid
1789 data, a new version was generated, as expected. It was only the case of a
1790 non-existent file that was broken.
1791
b0d9fc80
TK
1792TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1793 with a change in libdomainkeys > 0.64.
1794
1795TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1796 from DNS. If the selector record carries the flag, it now has
1797 precedence over the domain-wide flag.
1798
1799TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1800
47c7a64a
PH
1801PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1802 the use of a port name that isn't defined in /etc/services) occurred, the
1803 message was deferred as in a normal delivery, and thus remained on the
1804 spool, instead of being failed because of the mua_wrapper setting. This
1805 is now fixed, and I tidied up some of the mua_wrapper messages at the
1806 same time.
1807
a388bce4
SC
1808SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1809 the messages in a hash of arrays rather than using individual hashes.
1810 This is a bit cleaner and results in dramatic memory savings, albeit
1811 at a slight CPU cost.
1812
1813SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1814 as requested by Marc Sherman.
1815
1816SC/10 Eximstats: added histograms for user specified patterns as requested
1817 by Marc Sherman.
1818
0793e4ed
SC
1819SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1820
c58b88df
PH
1821PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1822 fopen() in the content-scanning modules that did not already have it.
1823
e7ad8a65 1824
7982096b
PH
1825Exim version 4.51
1826-----------------
1827
1a46a8c5
PH
1828TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1829 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1830
2f079f46 1831TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1832
1833TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1834
1835PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1836 to test Sieve filters that use "vacation".
1837
1838PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1839 that changes the way the GnuTLS parameters are stored in the cache file.
1840 The new format can be generated externally. For backward compatibility,
1841 if the data in the cache doesn't make sense, Exim assumes it has read an
1842 old-format file, and it generates new data and writes a new file. This
1843 means that you can't go back to an older release without removing the
1844 file.
1845
1846PH/03 A redirect router that has both "unseen" and "one_time" set does not
1847 work if there are any delivery delays because "one_time" forces the
1848 parent to be marked "delivered", so its unseen clone is never tried
1849 again. For this reason, Exim now forbids the simultaneous setting of
1850 these two options.
1851
1852PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1853 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1854 entry if you want to know the details. The fix, however, neglected to
1855 consider the case when local delivery batching is involved. The test for
1856 "previously delivered" was not happening when checking to see if an
1857 address could be batched with a previous (undelivered) one; under
1858 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1859 address.
1a46a8c5
PH
1860
1861PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1862 in its include files, and this causes problems building Exim.
1863
1864PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1865 header_syntax) but Exim was just ignoring anything given after a slash.
1866 In particular, this caused confusion with an attempt to use "verify =
1867 reverse_host_lookup/defer_ok". An error is now given when options are
1868 supplied for verify items that do not have them. (Maybe reverse_host_
1869 lookup should have a defer_ok option, but that's a different point.)
1870
1871PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1872 defined by RFC 821) to 2048, because there were problems with some AUTH
1873 commands, and RFC 1869 says the size should be increased for extended
1874 SMTP commands that take arguments.
1875
1876PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1877 Finch).
1878
1879PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1880 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1881
49c2d5ea
PH
1882PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1883 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1884 whatever). Otherwise the password may appear in the log. Following change
1885 PH/42 below, there is no longer a chance of it appearing in a bounce
1886 message.
49c2d5ea 1887
bf759a8b
PH
1888PH/11 Installed exipick version 20050225.0 from John Jetmore.
1889
83364d30
PH
1890PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1891 of its addresses was ever tried. (Bugzilla bug #2.)
1892
7999bbd7
PH
1893PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1894 the result incorrectly in the debug output. (It correctly added a newline
1895 to what was transported.)
1896
7dbf77c9
PH
1897TF/01 Added $received_time.
1898
74e0617f
PH
1899PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1900 commented out examples of how to interface to a virus scanner and to
1901 SpamAssassin. Also added commented examples of av_scanner and
1902 spamd_address settings.
1903
2f079f46
PH
1904PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1905 and controls are allowed in which ACLs. There were a couple of minor
1906 errors. Some of the entries in the conditions table (which is a table of
1907 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1908 negation of where the condition IS allowed.
1909
8c841523
PH
1910PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1911
7766a4f0
PH
1912PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1913 header file does not have a version number, so I've had to invent a new
1914 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1915 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1916 radiusclient), but it was contributed by a Radius user.
1917
8b417f2c
PH
1918PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1919 files or directories, for OpenSSL.
1920
901f42cb
PH
1921PH/19 When an Exim process that is running as root has to create an Exim log
1922 file, it does so in a subprocess that runs as exim:exim so as to get the
1923 ownership right at creation (otherwise, other Exim processes might see
1924 the file with the wrong ownership). There was no test for failure of this
1925 fork() call, which would lead to the process getting stuck as it waited
1926 for a non-existent subprocess. Forks do occasionally fail when resources
1927 run out. I reviewed all the other calls to fork(); they all seem to check
1928 for failure.
1929
f9b9210e
PH
1930PH/20 When checking for unexpected SMTP input at connect time (before writing
1931 the banner), Exim was not dealing correctly with a non-positive return
1932 from the read() function. If the client had disconnected by this time,
1933 the result was a log entry for a synchronization error with an empty
1934 string after "input=" when read() returned zero. If read() returned -1
1935 (an event I could not check), uninitialized data bytes were printed.
1936 There were reports of junk text (parts of files, etc) appearing after
1937 "input=".
1938
54cdb463
PH
1939PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1940
cf00dad6
PH
1941PH/22 Added support for macro redefinition, and (re)definition in between
1942 driver and ACL definitions.
1943
acb1b346
PH
1944PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1945 forgetting to use the resulting value; it was using the unexpanded value.
1946
c5ddb310
PH
1947PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1948 hadn't been configured. The fix is from Juergen Kreileder, who
1949 understands it better than I do:
1950
1951 "Here's what I see happening with three configured cyrus_sasl
1952 authenticators configured (plain, login, cram-md5):
1953
1954 On startup auth_cyrus_sasl_init() gets called for each of these.
1955 This means three calls to sasl_listmech() without a specified mech_list.
1956 => SASL tests which mechs of all available mechs actually work
1957 => three warnings about OTP not working
1958 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1959
1960 With the patch, sasl_listmech() also gets called three times. But now
1961 SASL's mech_list option is set to the server_mech specified in the the
1962 authenticator. Or in other words, the answer from sasl_listmech()
1963 gets limited to just the mech you're testing for (which is different
1964 for each call.)
1965 => the return list contains just 'plain' or 'login', 'cram-md5' or
1966 nothing depending on the value of ob->server_mech.
1967
1968 I've just tested the patch: Authentication still works fine,
1969 unavailable mechs specified in the exim configuration are still
1970 caught, and the auth.log warnings about OTP are gone."
1971
31619da6
PH
1972PH/25 When debugging is enabled, the contents of the command line are added
1973 to the debugging output, even when log_selector=+arguments is not
1974 specified.
1975
bebaf0fc
PH
1976PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1977 answer is "GNU", and only if the return is "GNU/something" is the answer
1978 "Linux".
1979
475fe28a
PH
1980PH/27 $acl_verify_message is now set immediately after the failure of a
1981 verification in an ACL, and so is available in subsequent modifiers. In
1982 particular, the message can be preserved by coding like this:
1983
1984 warn !verify = sender
1985 set acl_m0 = $acl_verify_message
1986
1987 Previously, $acl_verify_message was set only while expanding "message"
1988 and "log_message" when a very denied access.
1989
7e8bec7a
PH
1990PH/28 Modified OS/os.c-Linux with
1991
1992 -#ifndef OS_LOAD_AVERAGE
1993 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1994
1995 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1996 nomenclature these days.)
1997
e4a89c47
PH
1998PH/29 Installed patch from the Sieve maintainer that adds the options
1999 sieve_useraddress and sieve_subaddress to the redirect router.
2000
5ca2a9a1
PH
2001PH/30 In these circumstances:
2002 . Two addresses routed to the same list of hosts;
2003 . First host does not offer TLS;
2004 . First host accepts first address;
2005 . First host gives temporary error to second address;
2006 . Second host offers TLS and a TLS session is established;
2007 . Second host accepts second address.
2008 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2009 and peerdn, if requested) that were in fact used only for the second
2010 address.
7e8bec7a 2011
c688b954
PH
2012PH/31 When doing a callout as part of verifying an address, Exim was not paying
2013 attention to any local part prefix or suffix that was matched by the
2014 router that accepted the address. It now behaves in the same way as it
2015 does for delivery: the affixes are removed from the local part unless
2016 rcpt_include_affixes is set on the transport.
2017
fed77020
PH
2018PH/32 Add the sender address, as F=<...>, to the log line when logging a
2019 timeout during the DATA phase of an incoming message.
2020
7fe1560f
PH
2021PH/33 Sieve envelope tests were broken for match types other than :is. I have
2022 applied a patch sanctioned by the Sieve maintainer.
c688b954 2023
ebb6e6d5
PH
2024PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2025 the uid or gid is negative. A case of a negative gid caused this to be
2026 noticed. The fix allows for either to be negative.
2027
9c4e8f60
PH
2028PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2029 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2030 overlooked.
2031
2032PH/36 The change PH/12 above was broken. Fixed it.
2033
d7174846
PH
2034PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2035 the grounds that routing the same address twice would always produce the
2036 same answer. This might have been true once, but it is certainly no
2037 longer true now. Routing a child address may depend on the previous
2038 routing that produced that child. Some complicated redirection strategies
2039 went wrong when messages had multiple recipients, and made Exim's
2040 behaviour dependent on the order in which the addresses were given.
2041
2042 I have moved the duplicate checking until after the routing is complete.
2043 Exim scans the addresses that are assigned to local and remote
2044 transports, and removes any duplicates. This means that more work will be
2045 done, as duplicates will always all be routed, but duplicates are
2046 presumably rare, so I don't expect this is of any significance.
2047
2048 For deliveries to pipes, files, and autoreplies, the duplicate checking
2049 still happens during the routing process, since they are not going to be
2050 routed further.
2051
cfe75fc3
PH
2052PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2053 It corrects a timeout issue with spamd. This is Ian's comment: "The
2054 background is that sometimes spamd either never reads data from a
2055 connection it has accepted, or it never writes response data. The exiscan
2056 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2057 blindly assumes that writes won't block so it may never time out."
2058
be22d70e
PH
2059PH/39 Allow G after quota size as well as K and M.
2060
0612b098
PH
2061PH/40 The value set for $authenticated_id in an authenticator may not contain
2062 binary zeroes or newlines because the value is written to log lines and
2063 to spool files. There was no check on this. Now the value is run through
2064 the string_printing() function so that such characters are converted to
2065 printable escape sequences.
2066
2e0c1448
PH
2067PH/41 $message_linecount is a new variable that contains the total number of
2068 lines in the message. Compare $body_linecount, which is the count for the
2069 body only.
2070
447d236c
PH
2071PH/42 Exim no longer gives details of delivery errors for specific addresses in
2072 bounce and delay warning messages, except in certain special cases, which
2073 are as follows:
2074
2075 (a) An SMTP error message from a remote host;
2076 (b) A message specified in a :fail: redirection;
2077 (c) A message specified in a "fail" command in a system filter;
2078 (d) A message specified in a FAIL return from the queryprogram router;
2079 (e) A message specified by the cannot_route_message router option.
2080
2081 In these cases only, Exim does include the error details in bounce and
2082 warning messages. There are also a few cases where bland messages such
2083 as "unrouteable address" or "local delivery error" are given.
2084
d20976dc
PH
2085PH/43 $value is now also set for the "else" part of a ${run expansion.
2086
f656d135
PH
2087PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2088 being worked on, but at least Exim now implements the latest version to
2089 play with."
2090
2e2a30b4
PH
2091PH/45 In a pipe transport, although a timeout while waiting for the pipe
2092 process to complete was treated as a delivery failure, a timeout while
2093 writing the message to the pipe was logged, but erroneously treated as a
2094 successful delivery. Such timeouts include transport filter timeouts. For
2095 consistency with the overall process timeout, these timeouts are now
2096 treated as errors, giving rise to delivery failures by default. However,
2097 there is now a new Boolean option for the pipe transport called
2098 timeout_defer, which, if set TRUE, converts the failures into defers for
2099 both kinds of timeout. A transport filter timeout is now identified in
2100 the log output.
2101
9176e9f0
PH
2102PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2103 systems where "make" and "gmake" are different, calling "gmake" at top
2104 level broke things. I've arranged for the value of $(MAKE) to be passed
2105 from the Makefile to this script so that it can call the same version of
2106 "make".
2107
7982096b 2108
bbe902f0
PH
2109A note about Exim versions 4.44 and 4.50
2110----------------------------------------
2111
2112Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2113changes of various kinds. As a consequence, a big documentation update was
2114needed. This delayed the release for rather longer than seemed good, especially
2115in the light of a couple of (minor) security issues. Therefore, the changes
2116that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2117release. So 4.44 and 4.50 are in effect two different branches that both start
2118from 4.43.
2119
2120I have left the 4.50 change log unchanged; it contains all the changes since
21214.43. The change log for 4.44 is below; many of its items are identical to
2122those for 4.50. This seems to be the most sensible way to preserve the
2123historical information.
2124
2125
f7b63901 2126Exim version 4.50
495ae4b0
PH
2127-----------------
2128
5fe762f6
PH
2129 1. Minor wording change to the doc/README.SIEVE file.
2130
139059f6 2131 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2132 computation of the current number of files was incorrect.
495ae4b0 2133
7086e875
PH
2134 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2135 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2136 place.
2137
35af9f61
PH
2138 4. Give more explanation in the error message when the command for a transport
2139 filter fails to execute.
2140
b668c215
PH
2141 5. There are several places where Exim runs a non-Exim command in a
2142 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2143 was being done only for the command run by the queryprogram router. It is
2144 now done for all such subprocesses. The other cases are: ${run, transport
2145 filters, and the commands run by the lmtp and pipe transports.
2146
a494b1e1
PH
2147 6. Added CONFIGURE_GROUP build-time option.
2148
2149 7. Some older OS have a limit of 256 on the maximum number of file
2150 descriptors. Exim was using setrlimit() to set 1000 as a large value
2151 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2152 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2153
c5fcb476
PH
2154 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2155 was an oversight, and furthermore, ever since the addition of extra
2156 controls (e.g. 4.43/32), the checks on when to allow different forms of
2157 "control" were broken. There should now be diagnostics for all cases when a
2158 control that does not make sense is encountered.
2159
69358f02
PH
2160 9. Added the /retain_sender option to "control=submission".
2161
5be20824
PH
216210. $recipients is now available in the predata ACL (oversight).
2163
eb2c0248
PH
216411. Tidy the search cache before the fork to do a delivery from a message
2165 received from the command line. Otherwise the child will trigger a lookup
2166 failure and thereby defer the delivery if it tries to use (for example) a
2167 cached ldap connection that the parent has called unbind on.
2168
2a3eea10
PH
216912. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2170 of $address_data from the recipient verification was clobbered by the
2171 sender verification.
2172
217313. The value of address_data from a sender verification is now available in
2174 $sender_address_data in subsequent conditions in the ACL statement.
2175
23c7ff99
PH
217614. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2177
4deaf07d
PH
217815. Added a new option "connect=<time>" to callout options, to set a different
2179 connection timeout.
2180
926e1192
PH
218116. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2182 was its contents. (It was OK if the option was not defined at all.)
2183
650edc6f
PH
218417. A "Completed" log line is now written for messages that are removed from
2185 the spool by the -Mrm option.
2186
2c7db3f5
PH
218718. New variables $sender_verify_failure and $recipient_verify_failure contain
2188 information about exactly what failed.
2189
3d235903
PH
219019. Added -dd to debug only the daemon process.
2191
7c7ad977
PH
219220. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2193 handles timeouts, both on the server side and network timeouts. Renamed the
2194 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2195
981756db
PH
219621. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2197 It is now set to "smtps".
2198
d4eb88df
PH
219922. $host_address is now set to the target address during the checking of
2200 ignore_target_hosts.
2201
220223. When checking ignore_target_hosts for an ipliteral router, no host name was
2203 being passed; this would have caused $sender_host_name to have been used if
2204 matching the list had actually called for a host name (not very likely,
2205 since this list is usually IP addresses). A host name is now passed as
2206 "[x.x.x.x]".
2207
7d468ab8
PH
220824. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2209 code that specifies a non-restarting handler (typically sigaction() in
2210 modern systems) in an attempt to fix a rare and obscure crash bug.
2211
221225. Narrowed the window for a race in the daemon that could cause it to ignore
2213 SIGCHLD signals. This is not a major problem, because they are used only to
2214 wake it up if nothing else does.
2215
62c0818f
PH
221626. A malformed maildirsize file could cause Exim to calculate negative values
2217 for the mailbox size or file count. Odd effects could occur as a result.
2218 The maildirsize information is now recalculated if the size or filecount
2219 end up negative.
2220
26034054
PH
222127. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2222 support for a long time. Removed HAVE_SYS_VFS_H.
2223
af66f652
PH
222428. Installed the latest version of exipick from John Jetmore.
2225
90af77f4
PH
222629. In an address list, if the pattern was not a regular expression, an empty
2227 subject address (from a bounce message) matched only if the pattern was an
2228 empty string. Non-empty patterns were not even tested. This was the wrong
2229 because it is perfectly reasonable to use an empty address as part of a
2230 database query. An empty address is now tested by patterns that are
2231 lookups. However, all the other forms of pattern expect the subject to
2232 contain a local part and a domain, and therefore, for them, an empty
2233 address still always fails if the pattern is not itself empty.
2234
d8ef3577
PH
223530. Exim went into a mad DNS loop when attempting to do a callout where the
2236 host was specified on an smtp transport, and looking it up yielded more
2237 than one IP address.
2238
5cb8cbc6
PH
223931. Re-factored the code for checking spool and log partition space into a
2240 function that finds that data and another that does the check. The former
2241 is then used to implement four new variables: $spool_space, $log_space,
2242 $spool_inodes, and $log_inodes.
2243
14702f5b
PH
224432. The RFC2047 encoding function was originally intended for short strings
2245 such as real names; it was not keeping to the 75-character limit for
2246 encoded words that the RFC imposes. It now respects the limit, and
2247 generates multiple encoded words if necessary. To be on the safe side, I
2248 have increased the buffer size for the ${rfc2047: expansion operator from
2249 1024 to 2048 bytes.
2250
063b1e99
PH
225133. It is now permitted to omit both strings after an "if" condition; if the
2252 condition is true, the result is "true". As before, when the second string
2253 is omitted, a false condition yields an empty string. This makes it less
2254 cumbersome to write custom ACL and router conditions.
2255
652e1b65
PH
225634. Failure to deliver a bounce message always caused it to be frozen, even if
2257 there was an errors_to setting on the router. The errors_to setting is now
2258 respected.
2259
6f0c9a4f
PH
226035. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2261 canonical form (fully expanded) before being placed in
2262 $sender_host_address.
2263
33397d19
PH
226436. The table in the code that translates DNS record types into text (T_A to
2265 "A" for instance) was missing entries for NS and CNAME. It is just possible
2266 that this could have caused confusion if both these types were looked up
2267 for the same domain, because the text type is used as part of Exim's
2268 per-process caching. But the chance of anyone hitting this buglet seems
2269 very small.
2270
7bb56e1f
PH
227137. The dnsdb lookup has been extended in a number of ways.
2272
2273 (1) There is a new type, "zns", which walks up the domain tree until it
2274 finds some nameserver records. It should be used with care.
2275
ea3bc19b
PH
2276 (2) There is a new type, "mxh", which is like "mx" except that it returns
2277 just the host names, not the priorities.
2278
2279 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2280 looked up. The behaviour when one of the lookups defers can be
2281 controlled by a keyword.
7bb56e1f 2282
ea3bc19b 2283 (4) It is now possible to specify the separator character for use when
7bb56e1f 2284 multiple records are returned.
33397d19 2285
0bcb2a0e
PH
228638. The dnslists ACL condition has been extended: it is now possible to supply
2287 a list of IP addresses and/or domains to be looked up in a particular DNS
2288 domain.
2289
2ac0e484
PH
229039. Added log_selector=+queue_time_overall.
2291
4e1fde53
PH
229240. When running the queue in the test harness, wait just a tad after forking a
2293 delivery process, to get repeatability of debugging output.
2294
de365ded
PH
229541. Include certificate and key file names in error message when GnuTLS fails
2296 to set them up, because the GnuTLS error message doesn't include the name
2297 of the failing file when there is a problem reading it.
2298
f05da2e8
PH
229942. Allow both -bf and -bF in the same test run.
2300
d6453af2
PH
230143. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2302
f7b63901
PH
230344. The "Exiscan patch" is now merged into the mainline Exim source.
2304
230545. Sometimes the final signoff response after QUIT could fail to get
2306 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2307 < 0 before doing a fflush(). This bug looks as though it goes back to the
2308 introduction of TLS in release 3.20, but "sometimes" must have been rare
2309 because the tests only now provoked it.
2310
a444213a
PH
231146. Reset the locale to "C" after calling embedded Perl, in case it was changed
2312 (this can affect the format of dates).
2313
0ec020ea
PH
231447. exim_tidydb, when checking for the continued existence of a message for
2315 which it has found a message-specific retry record, was not finding
2316 messages that were in split spool directories. Consequently, it was
2317 deleting retry records that should have stayed in existence.
2318
b1206957
PH
231948. Steve fixed some bugs in eximstats.
2320
232149. The SPA authentication driver was not abandoning authentication and moving
2322 on to the next authenticator when an expansion was forced to fail,
2323 contradicting the general specification for all authenticators. Instead it
2324 was generating a temporary error. It now behaves as specified.
2325
26dd5a95
PH
232650. The default ordering of permitted cipher suites for GnuTLS was pessimal
2327 (the order specifies the preference for clients). The order is now AES256,
2328 AES128, 3DES, ARCFOUR128.
2329
343b2385
PH
233051. Small patch to Sieve code - explicitly set From: when generating an
2331 autoreply.
2332
1c5466b9
PH
233352. Exim crashed if a remote delivery caused a very long error message to be
2334 recorded - for instance if somebody sent an entire SpamAssassin report back
2335 as a large number of 550 error lines. This bug was coincidentally fixed by
2336 increasing the size of one of Exim's internal buffers (big_buffer) that
2337 happened as part of the Exiscan merge. However, to be on the safe side, I
2338 have made the code more robust (and fixed the comments that describe what
2339 is going on).
2340
55ee9ee3
PH
234153. Now that there can be additional text after "Completed" in log lines (if
2342 the queue_time_overall log selector is set), a one-byte patch to exigrep
2343 was needed to allow it to recognize "Completed" as not the last thing in
2344 the line.
2345
d38f8232
PH
234654. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2347 patch that reportedly fixes this has been added. I am not expert enough to
2348 create a test for it. This is what the patch creator wrote:
2349
2350 "I found a little strange behaviour of ldap code when working with
2351 Windows 2003 AD Domain, where users was placed in more than one
2352 Organization Units. When I tried to give exim partial DN, the exit code
2353 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2354 But simultaneously result of request was absolutely normal ldap result,
2355 so I produce this patch..."
2356
3295e65b
PH
2357 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2358 REFERENCE, so I have modified the code to exclude the patch when that macro
2359 is not defined.
2360
7102e136
PH
236155. Some experimental protocols are using DNS PTR records for new purposes. The
2362 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2363 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2364 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2365 CAN-2005-0021
7102e136 2366
3ca0ba97
PH
236756. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2368
c2bcbe20
PH
236957. Double the size of the debug message buffer (to 2048) so that more of very
2370 long debug lines gets shown.
2371
18ce445d
PH
237258. The exicyclog utility now does better if the number of log files to keep
2373 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2374
1f5b4c3d
PH
237559. Two changes related to the smtp_active_hostname option:
2376
2377 (1) $smtp_active_hostname is now available as a variable.
2378 (2) The default for smtp_banner uses $smtp_active_hostname instead
2379 of $primary_hostname.
2380
b975ba52
PH
238160. The host_aton() function is supposed to be passed a string that is known
2382 to be a valid IP address. However, in the case of IPv6 addresses, it was
2383 not checking this. This is a hostage to fortune. Exim now panics and dies
2384 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2385 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2386 components; fortuitously, this particular loophole had already been fixed
2387 by change 4.50/55 above.
2388
2389 If there are any other similar loopholes, the new check in host_aton()
2390 itself should stop them being exploited. The report I received stated that
2391 data on the command line could provoke the exploit when Exim was running as
2392 exim, but did not say which command line option was involved. All I could
2393 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2394 running as the user.
ea3a6f44 2395 CAN-2005-0021
85b87bc2
PH
2396
239761. There was a buffer overflow vulnerability in the SPA authentication code
2398 (which came originally from the Samba project). I have added a test to the
2399 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2400 CAN-2005-0022
b975ba52 2401
17ffcae7
PH
240262. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2403 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2404
d95f9fdb
PH
240563. The daemon start-up calls getloadavg() while still root for those OS that
2406 need the first call to be done as root, but it missed one case: when
2407 deliver_queue_load_max is set with deliver_drop_privilege. This is
2408 necessary for the benefit of the queue runner, because there is no re-exec
2409 when deliver_drop_privilege is set.
2410
86b8287f
PH
241164. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2412 This has been fixed.
2413
60dc5e56
PH
241465. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2415 was in use, was not putting the data itself into the right store pool;
2416 consequently, it could be overwritten for a subsequent message in the same
2417 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2418 the caching.)
2419
533244af
PH
242066. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2421
a5a28604
PH
242267. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2423 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2424 the function were treating the return as a boolean value, which happened to
2425 work because 0=false and not-0=true, but is not correct code.
2426
7e634d24
PH
242768. The host_aton() function was not handling scoped IPv6 addresses (those
2428 with, for example, "%eth0" on the end) correctly.
2429
3e11c26b
PH
243069. Fixed some compiler warnings in acl.c for the bitmaps specified with
2431 negated items (that is, ~something) in unsigned ints. Some compilers
2432 apparently mutter when there is no cast.
2433
6729cf78
PH
243470. If an address verification called from an ACL failed, and did not produce a
2435 user-specific message (i.e. there was only a "system" message), nothing was
2436 put in $acl_verify_message. In this situation, it now puts the system
2437 message there.
2438
00f00ca5
PH
243971. Change 4.23/11 added synchronization checking at the start of an SMTP
2440 session; change 4.31/43 added the unwanted input to the log line - except
2441 that it did not do this in the start of session case. It now does.
2442
c9bdd01c
PH
244372. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2444 This is wrong and can cause the other end to generate a synchronization
2445 error if it is another Exim or anything else that does the synchronization
2446 check. A QUIT command is no longer sent after a timeout.
2447
d43194df
PH
244873. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2449 during host lookups.
2450
fe5b5d0b
PH
245174. The defer_ok option of callout verification was not working if it was used
2452 when verifying addresses in header lines, that is, for this case:
2453
2454 verify = header_sender/callout=defer_ok
2455
76a2d7ba
PH
245675. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2457 those file descriptors could be used for SMTP connections. If anything
2458 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2459 could be sent to the SMTP client, causing chaos. The daemon now opens
2460 stdin, stdout, and stderr to /dev/null when it puts itself into the
2461 background.
2462
246376. Arrange for output from Perl's "warn" command to be written to Exim's main
2464 log by default. The user can override this with suitable Perl magic.
2465
04f7d5b9
PH
246677. The use of log_message on a "discard" ACL verb, which is supposed to add to
2467 the log message when discard triggers, was not working for the DATA ACL or
2468 for the non-SMTP ACL.
2469
bc60667e
PH
247078. Error message wording change in sieve.c.
2471
bb6e88ff
PH
247279. If smtp_accept_max_per_host was set, the number of connections could be
2473 restricted to fewer than expected, because the daemon was trying to set up
2474 a new connection before checking whether the processes handling previous
2475 connections had finished. The check for completed processes is now done
2476 earlier. On busy systems, this bug wouldn't be noticed because something
2477 else would have woken the daemon, and it would have reaped the completed
2478 process earlier.
2479
1e70f85b
PH
248080. If a message was submitted locally by a user whose login name contained one
2481 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2482 It caused a spool format error. I have fixed the spool reading code. A
2483 related problem was that the "from" clause in the Received: line became
2484 illegal because of the space(s). It is now covered by ${quote_local_part.
2485
248681. Included the latest eximstats from Steve (adds average sizes to HTML Top
2487 tables).
2488
4e01f9d6
PH
248982. Updated OS/Makefile-AIX as per message from Mike Meredith.
2490
1ee1cef2
PH
249183. Patch from Sieve maintainer to fix unterminated string problem in
2492 "vacation" handling.
2493
6e2b4ccc
PH
249484. Some minor changes to the Linux configuration files to help with other
2495 OS variants using glibc.
2496
8e669ac1
PH
249785. One more patch for Sieve to update vacation handling to latest spec.
2498
495ae4b0 2499
bbe902f0
PH
2500----------------------------------------------------
2501See the note above about the 4.44 and 4.50 releases.
2502----------------------------------------------------
2503
2504
2505Exim version 4.44
2506-----------------
2507
2508 1. Change 4.43/35 introduced a bug that caused file counts to be
2509 incorrectly computed when quota_filecount was set in an appendfile
2510 transport
2511
2512 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2513 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2514 place.
2515
2516 3. Give more explanation in the error message when the command for a transport
2517 filter fails to execute.
2518
2519 4. There are several places where Exim runs a non-Exim command in a
2520 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2521 was being done only for the command run by the queryprogram router. It is
2522 now done for all such subprocesses. The other cases are: ${run, transport
2523 filters, and the commands run by the lmtp and pipe transports.
2524
2525 5. Some older OS have a limit of 256 on the maximum number of file
2526 descriptors. Exim was using setrlimit() to set 1000 as a large value
2527 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2528 systems. I've change it so that if it can't get 1000, it tries for 256.
2529
2530 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2531 was an oversight, and furthermore, ever since the addition of extra
2532 controls (e.g. 4.43/32), the checks on when to allow different forms of
2533 "control" were broken. There should now be diagnostics for all cases when a
2534 control that does not make sense is encountered.
2535
2536 7. $recipients is now available in the predata ACL (oversight).
2537
2538 8. Tidy the search cache before the fork to do a delivery from a message
2539 received from the command line. Otherwise the child will trigger a lookup
2540 failure and thereby defer the delivery if it tries to use (for example) a
2541 cached ldap connection that the parent has called unbind on.
2542
2543 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2544 of $address_data from the recipient verification was clobbered by the
2545 sender verification.
2546
254710. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2548 was its contents. (It was OK if the option was not defined at all.)
2549
255011. A "Completed" log line is now written for messages that are removed from
2551 the spool by the -Mrm option.
2552
255312. $host_address is now set to the target address during the checking of
2554 ignore_target_hosts.
2555
255613. When checking ignore_target_hosts for an ipliteral router, no host name was
2557 being passed; this would have caused $sender_host_name to have been used if
2558 matching the list had actually called for a host name (not very likely,
2559 since this list is usually IP addresses). A host name is now passed as
2560 "[x.x.x.x]".
2561
256214. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2563 code that specifies a non-restarting handler (typically sigaction() in
2564 modern systems) in an attempt to fix a rare and obscure crash bug.
2565
256615. Narrowed the window for a race in the daemon that could cause it to ignore
2567 SIGCHLD signals. This is not a major problem, because they are used only to
2568 wake it up if nothing else does.
2569
257016. A malformed maildirsize file could cause Exim to calculate negative values
2571 for the mailbox size or file count. Odd effects could occur as a result.
2572 The maildirsize information is now recalculated if the size or filecount
2573 end up negative.
2574
257517. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2576 support for a long time. Removed HAVE_SYS_VFS_H.
2577
ea3a6f44 257818. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2579
258019. Allow an empty sender to be matched against a lookup in an address list.
2581 Previously the only cases considered were a regular expression, or an
2582 empty pattern.
2583
258420. Exim went into a mad DNS lookup loop when doing a callout where the
2585 host was specified on the transport, if the DNS lookup yielded more than
2586 one IP address.
2587
ea3a6f44
NM
258821. The RFC2047 encoding function was originally intended for short strings
2589 such as real names; it was not keeping to the 75-character limit for
2590 encoded words that the RFC imposes. It now respects the limit, and
2591 generates multiple encoded words if necessary. To be on the safe side, I
2592 have increased the buffer size for the ${rfc2047: expansion operator from
2593 1024 to 2048 bytes.
bbe902f0 2594
ea3a6f44
NM
259522. Failure to deliver a bounce message always caused it to be frozen, even if
2596 there was an errors_to setting on the router. The errors_to setting is now
2597 respected.
bbe902f0
PH
2598
259923. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2600 canonical form (fully expanded) before being placed in
2601 $sender_host_address.
2602
260324. Updated eximstats to version 1.33
2604
ea3a6f44
NM
260525. Include certificate and key file names in error message when GnuTLS fails
2606 to set them up, because the GnuTLS error message doesn't include the name
2607 of the failing file when there is a problem reading it.
bbe902f0
PH
2608
260926. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2610 As per change 25.
bbe902f0 2611
ea3a6f44
NM
261227. Reset the locale to "C" after calling embedded Perl, in case it was changed
2613 (this can affect the format of dates).
bbe902f0 2614
ea3a6f44
NM
261528. exim_tidydb, when checking for the continued existence of a message for
2616 which it has found a message-specific retry record, was not finding
2617 messages that were in split spool directories. Consequently, it was
2618 deleting retry records that should have stayed in existence.
bbe902f0
PH
2619
262029. eximstats updated to version 1.35
2621 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2622 1.35 - bugfix such that pie charts by volume are generated correctly
2623
ea3a6f44
NM
262430. The SPA authentication driver was not abandoning authentication and moving
2625 on to the next authenticator when an expansion was forced to fail,
2626 contradicting the general specification for all authenticators. Instead it
2627 was generating a temporary error. It now behaves as specified.
bbe902f0 2628
ea3a6f44
NM
262931. The default ordering of permitted cipher suites for GnuTLS was pessimal
2630 (the order specifies the preference for clients). The order is now AES256,
2631 AES128, 3DES, ARCFOUR128.
bbe902f0 2632
ea3a6f44
NM
263331. Small patch to Sieve code - explicitly set From: when generating an
2634 autoreply.
bbe902f0 2635
ea3a6f44
NM
263632. Exim crashed if a remote delivery caused a very long error message to be
2637 recorded - for instance if somebody sent an entire SpamAssassin report back
2638 as a large number of 550 error lines. This bug was coincidentally fixed by
2639 increasing the size of one of Exim's internal buffers (big_buffer) that
2640 happened as part of the Exiscan merge. However, to be on the safe side, I
2641 have made the code more robust (and fixed the comments that describe what
2642 is going on).
bbe902f0 2643
ea3a6f44
NM
264433. Some experimental protocols are using DNS PTR records for new purposes. The
2645 keys for these records are domain names, not reversed IP addresses. The
2646 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2647 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2648 CAN-2005-0021
2649
ea3a6f44
NM
265034. The host_aton() function is supposed to be passed a string that is known
2651 to be a valid IP address. However, in the case of IPv6 addresses, it was
2652 not checking this. This is a hostage to fortune. Exim now panics and dies
2653 if the condition is not met. A case was found where this could be provoked
2654 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2655 components; fortuitously, this particular loophole had already been fixed
2656 by change 4.50/55 or 4.44/33 above.
2657
2658 If there are any other similar loopholes, the new check in host_aton()
2659 itself should stop them being exploited. The report I received stated that
2660 data on the command line could provoke the exploit when Exim was running as
2661 exim, but did not say which command line option was involved. All I could
2662 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2663 running as the user.
bbe902f0
PH
2664 CAN-2005-0021
2665
ea3a6f44
NM
266635. There was a buffer overflow vulnerability in the SPA authentication code
2667 (which came originally from the Samba project). I have added a test to the
2668 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2669 CAN-2005-0022
2670
ea3a6f44
NM
267136. The daemon start-up calls getloadavg() while still root for those OS that
2672 need the first call to be done as root, but it missed one case: when
2673 deliver_queue_load_max is set with deliver_drop_privilege. This is
2674 necessary for the benefit of the queue runner, because there is no re-exec
2675 when deliver_drop_privilege is set.
bbe902f0 2676
ea3a6f44
NM
267737. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2678 was in use, was not putting the data itself into the right store pool;
2679 consequently, it could be overwritten for a subsequent message in the same
2680 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2681 the caching.)
bbe902f0 2682
ea3a6f44
NM
268338. Sometimes the final signoff response after QUIT could fail to get
2684 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2685 < 0 before doing a fflush(). This bug looks as though it goes back to the
2686 introduction of TLS in release 3.20, but "sometimes" must have been rare
2687 because the tests only now provoked it.
bbe902f0
PH
2688
2689
495ae4b0
PH
2690Exim version 4.43
2691-----------------
2692
2693 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2694 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2695 Now it returns an integer. A number of calls were still expecting a T/F
2696 return. Fortuitously, in all cases, the tests worked in OK situations,
2697 which is the norm. However, things would have gone wrong on any write
2698 failures on the smtp file descriptor. This function is used when sending
2699 messages over SMTP and also when doing verify callouts.
2700
2701 2. When Exim is called to do synchronous delivery of a locally submitted
2702 message (the -odf or -odi options), it no longer closes stderr before doing
2703 the delivery.
2704
2705 3. Implemented the mua_wrapper option.
2706
2707 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2708
2709 5. Implemented the functions header_remove(), header_testname(),
2710 header_add_at_position(), and receive_remove_recipient(), and exported them
2711 to local_scan().
2712
2713 6. If an ACL "warn" statement specified the addition of headers, Exim already
2714 inserted X-ACL-Warn: at the start if there was no header name. However, it
2715 was not making this test for the second and subsequent header lines if
2716 there were newlines in the string. This meant that an invalid header could
2717 be inserted if Exim was badly configured.
2718
2719 7. Allow an ACL "warn" statement to add header lines at the start or after all
2720 the Received: headers, as well as at the end.
2721
2722 8. Added the rcpt_4xx retry error code.
2723
2724 9. Added postmaster_mailfrom=xxx to callout verification option.
2725
272610. Added mailfrom=xxxx to the callout verification option, for verify=
2727 header_sender only.
2728
272911. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2730 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2731
273212. Inserted some casts to stop certain compilers warning when using pointer
2733 differences as field lengths or precisions in printf-type calls (mostly
2734 affecting debugging statements).
2735
273613. Added optional readline() support for -be (dynamically loaded).
2737
273814. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2739 same clock tick as a message's arrival, so that its received time was the
2740 same as the "first fail" time on the retry record, and that message
2741 remained on the queue past the ultimate address timeout, every queue runner
2742 would try a delivery (because it was past the ultimate address timeout) but
2743 after another failure, the ultimate address timeout, which should have then
2744 bounced the address, did not kick in. This was a "< instead of <=" error;
2745 in most cases the first failure would have been in the next clock tick
2746 after the received time, and all would be well.
2747
274815. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2749 being recognized when the domain list was tested by the match_domain
2750 condition in an expansion string.
2751
275216. Added the ${str2b64: operator.
2753
275417. Exim was always calling setrlimit() to set a large limit for the number of
2755 processes, without checking whether the existing limit was already
2756 adequate. (It did check for the limit on file descriptors.) Furthermore,
2757 errors from getrlimit() and setrlimit() were being ignored. Now they are
2758 logged to the main and panic logs, but Exim does carry on, to try to do its
2759 job under whatever limits there are.
2760
276118. Imported PCRE 5.0.
2762
276319. Trivial typo in log message " temporarily refused connection" (the leading
2764 space).
2765
276620. If the log selector return_path_on_delivery was set and an address was
2767 redirected to /dev/null, the delivery process crashed because it assumed
2768 that a return path would always be set for a "successful" delivery. In this
2769 case, the whole delivery is bypassed as an optimization, and therefore no
2770 return path is set.
2771
277221. Internal re-arrangement: the function for sending a challenge and reading
2773 a response while authentication was assuming a zero-terminated challenge
2774 string. It's now changed to take a pointer and a length, to allow for
2775 binary data in such strings.
2776
277722. Added the cyrus_sasl authenticator (code supplied by MBM).
2778
277923. Exim was not respecting finduser_retries when seeking the login of the
2780 uid under which it was called; it was always trying 10 times. (The default
2781 setting of finduser_retries is zero.) Also, it was sleeping after the final
2782 failure, which is pointless.
2783
278424. Implemented tls_on_connect_ports.
2785
278625. Implemented acl_smtp_predata.
2787
278826. If the domain in control=submission is set empty, Exim assumes that the
2789 authenticated id is a complete email address when it generates From: or
2790 Sender: header lines.
2791
279227. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2793 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2794 chown and chgrp in /bin and hostname in /usr/bin.
2795
279628. Exim was keeping the "process log" file open after each use, just as it
2797 does for the main log. This opens the possibility of it remaining open for
2798 long periods when the USR1 signal hits a daemon. Occasional processlog
2799 errors were reported, that could have been caused by this. Anyway, it seems
2800 much more sensible not to leave this file open at all, so that is what now
2801 happens.
2802
280329. The long-running daemon process does not normally write to the log once it
2804 has entered its main loop, and it closes the log before doing so. This is
2805 so that log files can straightforwardly be renamed and moved. However,
2806 there are a couple of unusual error situations where the daemon does write
2807 log entries, and I had neglected to close the log afterwards.
2808
280930. The text of an SMTP error response that was received during a remote
2810 delivery was being truncated at 512 bytes. This is too short for some of
2811 the long messages that one sometimes sees. I've increased the limit to
2812 1024.
2813
281431. It is now possible to make retry rules that apply only when a message has a
2815 specific sender, in particular, an empty sender.
2816
281732. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2818 it possible to be selective about when SMTP synchronization is enforced.
2819
282033. Added "control = caseful_local_part" and "control = "caselower_local_part".
2821
282232. Implemented hosts_connection_nolog.
2823
282433. Added an ACL for QUIT.
2825
282634. Setting "delay_warning=" to disable warnings was not working; it gave a
2827 syntax error.
2828
282935. Added mailbox_size and mailbox_filecount to appendfile.
2830
283136. Added control = no_multiline_responses to ACLs.
2832
283337. There was a bug in the logic of the code that waits for the clock to tick
2834 in the case where the clock went backwards by a substantial amount such
2835 that the microsecond fraction of "now" was more than the microsecond
2836 fraction of "then" (but the whole seconds number was less).
2837
283838. Added support for the libradius Radius client library this is found on
2839 FreeBSD (previously only the radiusclient library was supported).
2840
2841
2842Exim version 4.42
2843-----------------
2844
2845 1. When certain lookups returned multiple values in the form name=value, the
2846 quoting of the values was not always being done properly. Specifically:
2847 (a) If the value started with a double quote, but contained no whitespace,
2848 it was not quoted.
2849 (b) If the value contained whitespace other than a space character (i.e.
2850 tabs or newlines or carriage returns) it was not quoted.
2851 This fix has been applied to the mysql and pgsql lookups by writing a
2852 separate quoting function and calling it from the lookup code. The fix
2853 should probably also be applied to nisplus, ibase and oracle lookups, but
2854 since I cannot test any of those, I have not disturbed their existing code.
2855
2856 2. A hit in the callout cache for a specific address caused a log line with no
2857 reason for rejecting RCPT. Now it says "Previous (cached) callout
2858 verification failure".
2859
2860 3. There was an off-by-one bug in the queryprogram router. An over-long
2861 return line was truncated at 256 instead of 255 characters, thereby
2862 overflowing its buffer with the terminating zero. As well as fixing this, I
2863 have increased the buffer size to 1024 (and made a note to document this).
2864
2865 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2866 when Exim is waiting for an SMTP response from a remote server, Exim
2867 restarts its select() call on the socket, thereby resetting its timeout.
2868 This is not a problem when such interrupts are rare. Somebody set up a cron
2869 job to run exiwhat every 2 minutes, which is less than the normal select()
2870 timeout (5 or 10 minutes). This meant that the select() timeout never
2871 kicked in because it was always reset. I have fixed this by comparing the
2872 time when an interrupt arrives with the time at the start of the first call
2873 to select(). If more time than the timeout has elapsed, the interrupt is
2874 treated as a timeout.
2875
2876 5. Some internal re-factoring in preparation for the addition of Sieve
2877 extensions (by MH). In particular, the "personal" test is moved to a
2878 separate function, and given an option for scanning Cc: and Bcc: (which is
2879 not set for Exim filters).
2880
2881 6. When Exim created an email address using the login of the caller as the
2882 local part (e.g. when creating a From: or Sender: header line), it was not
2883 quoting the local part when it contained special characters such as @.
2884
2885 7. Installed new OpenBSD configuration files.
2886
2887 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2888 try to make them clearer.
2889
2890 9. Callout options, other than the timeout value, were being ignored when
2891 verifying sender addresses in header lines. For example, when using
2892
2893 verify = header_sender/callout=no_cache
2894
2895 the cache was (incorrectly) being used.
2896
289710. Added a missing instance of ${EXE} to the exim_install script; this affects
2898 only the Cygwin environment.
2899
290011. When return_path_on_delivery was set as a log selector, if different remote
2901 addresses in the same message used different return paths and parallel
2902 remote delivery occurred, the wrong values would sometimes be logged.
2903 (Whenever a remote delivery process finished, the return path value from
2904 the most recently started remote delivery process was logged.)
2905
290612. RFC 3848 specifies standard names for the "with" phrase in Received: header
2907 lines when AUTH and/or TLS are in use. This is the "received protocol"
2908 field. Exim used to use "asmtp" for authenticated SMTP, without any
2909 indication (in the protocol name) for TLS use. Now it follows the RFC and
2910 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2911 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2912 names appear in log lines as well as in Received: header lines.
2913
291413. Installed MH's patches for Sieve to add the "copy" and "vacation"
2915 extensions, and comparison tests, and to fix some bugs.
2916
291714. Changes to the "personal" filter test:
2918
2919 (1) The test was buggy in that it was just doing the equivalent of
2920 "contains" tests on header lines. For example, if a user's address was
2921 anne@some.where, the "personal" test would incorrectly be true for
2922
2923 To: susanne@some.where
2924
2925 This test is now done by extracting each address from the header in turn,
2926 and checking the entire address. Other tests that are part of "personal"
2927 are now done using regular expressions (for example, to check local parts
2928 of addresses in From: header lines).
2929
2930 (2) The list of non-personal local parts in From: addresses has been
2931 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2932 taken from the Sieve specification recommendations.
2933
2934 (3) If the message contains any header line starting with "List-" it is
2935 treated as non-personal.
2936
2937 (4) The test for "circular" in the Subject: header line has been removed
2938 because it now seems ill-conceived.
2939
294015. Minor typos in src/EDITME comments corrected.
2941
294216. Installed latest exipick from John Jetmore.
2943
294417. If headers_add on a router specified a text string that was too long for
2945 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2946 of string_sprintf() is now avoided.
2947
294818. $message_body_size was not set (it was always zero) when running the DATA
2949 ACL and the local_scan() function.
2950
295119. For the "mail" command in an Exim filter, no default was being set for
2952 the once_repeat time, causing a random time value to be used if "once" was
2953 specified. (If the value happened to be <= 0, no repeat happened.) The
2954 default is now 0s, meaning "never repeat". The "vacation" command was OK
2955 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2956 (I found it when inspecting the code).
2957
295820. There is now an overall timeout for performing a callout verification. It
2959 defaults to 4 times the callout timeout, which applies to individual SMTP
2960 commands during the callout. The overall timeout applies when there is more
2961 than one host that can be tried. The timeout is checked before trying the
2962 next host. This prevents very long delays if there are a large number of
2963 hosts and all are timing out (e.g. when the network connections are timing
2964 out). The value of the overall timeout can be changed by specifying an
2965 additional sub-option for "callout", called "maxwait". For example:
2966
2967 verify = sender/callout=5s,maxwait=20s
2968
296921. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2970 to the end before writing, but this should make it even safer).
2971
297222. Exim was forgetting that it had advertised PIPELINING for the second and
2973 subsequent messages on an SMTP connection. It was also not resetting its
2974 memory on STARTTLS and an internal HELO.
2975
297623. When Exim logs an SMTP synchronization error within a session, it now
2977 records whether PIPELINING has been advertised or not.
2978
297924. Added 3 instances of "(long int)" casts to time_t variables that were being
2980 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2981 rather than long int.
2982
298325. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2984
298526. Added the never_mail option to autoreply.
2986
2987
2988Exim version 4.41
2989-----------------
2990
2991 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2992 crash if the getsockname() call failed; this can happen if a connection is
2993 closed very soon after it is established. The problem was simply in the
2994 order in which certain operations were done, causing Exim to try to write
2995 to the SMTP stream before it had set up the file descriptor. The bug has
2996 been fixed by making things happen in the correct order.
2997
2998
2999Exim version 4.40
3000-----------------
3001
3002 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3003 before the connection was closed, thus losing the rejection response.
3004
3005 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3006 some early Solaris releases, but causes trouble in current releases where
3007 socklen_t is defined.
3008
3009 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3010 always exist.
3011
3012 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3013 configured.
3014
3015 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3016 that releasing the top of it at the end releases what was used for sub-
3017 expansions (unless the block got too big). However, discard this block if
3018 the first thing is a variable or header, so that we can use its block when
3019 it is dynamic (useful for very large $message_headers, for example).
3020
3021 6. Lookups now cache *every* query, not just the most recent. A new, separate
3022 store pool is used for this. It can be recovered when all lookup caches are
3023 flushed. Lookups now release memory at the end of their result strings.
3024 This has involved some general refactoring of the lookup sources.
3025
3026 7. Some code has been added to the store_xxx() functions to reduce the amount
3027 of flapping under certain conditions.
3028
3029 8. log_incoming_interface used to affect only the <= reception log lines. Now
3030 it causes the local interface and port to be added to several more SMTP log
3031 lines, for example "SMTP connection from", and rejection lines.
3032
3033 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3034
303510. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3036
303711. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3038 could be overwritten at the end of the current message (or the start of a
3039 new message if it was set in a HELO ACL). The value is now preserved for
3040 the duration of the SMTP connection.
3041
304212. If a transport had a headers_rewrite setting, and a matching header line
3043 contained an unqualified address, that address was qualified, even if it
3044 did not match any rewriting rules. The underlying bug was that the values
3045 of the flags that permit the existence of unqualified sender and recipient
3046 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3047 non-local messages, and by -bnq for local messages) were not being
3048 preserved with the message after it was received.
3049
305013. When Exim was logging an SMTP synchronization error, it could sometimes log
3051 "next input=" as part of the text comprising the host identity instead of
3052 the correct text. The code was using the same buffer for two different
3053 strings. However, depending on which order the printing function evaluated
3054 its arguments, the bug did not always show up. Under Linux, for example, my
3055 test suite worked just fine.
3056
305714. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3058 doesn't work with some older versions of Perl. It has been changed to "my",
3059 which in any case is probably the better facility to use.
3060
306115. A really picky compiler found some instances of statements for creating
3062 error messages that either had too many or two few arguments for the format
3063 string.
3064
306516. The size of the buffer for calls to the DNS resolver has been increased
3066 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3067 for addresses that have a lot of PTR records. This alleviates a problem; it
3068 does not fully solve it.
3069
307017. A dnsdb lookup for PTR records that receives more data than will fit in the
3071 buffer now truncates the list and logs the incident, which is the same
3072 action as happens when Exim is looking up a host name and its aliases.
3073 Previously in this situation something unpredictable would happen;
3074 sometimes it was "internal error: store_reset failed".
3075
307618. If a server dropped the connection unexpectedly when an Exim client was
3077 using GnuTLS and trying to read a response, the client delivery process
3078 crashed while trying to generate an error log message.
3079
308019. If a "warn" verb in an ACL added multiple headers to a message in a single
3081 string, for example:
3082
3083 warn message = H1: something\nH2: something
3084
3085 the text was added as a single header line from Exim's point of view
3086 though it ended up OK in the delivered message. However, searching for the
3087 second and subsequent header lines using $h_h2: did not work. This has been
3088 fixed. Similarly, if a system filter added multiple headers in this way,
3089 the routers could not see them.
3090
309120. Expanded the error message when iplsearch is called with an invalid key to
3092 suggest using net-iplsearch in a host list.
3093
309421. When running tests using -bh, any delays imposed by "delay" modifiers in
3095 ACLs are no longer actually imposed (and a message to that effect is
3096 output).
3097
309822. If a "gecos" field in a passwd entry contained escaped characters, in
3099 particular, if it contained a \" sequence, Exim got it wrong when building
3100 a From: or a Sender: header from that name. A second bug also caused
3101 incorrect handling when an unquoted " was present following a character
3102 that needed quoting.
3103
310423. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3105 was not being matched caselessly.
3106
310724. Arranged for all hyphens in the exim.8 source to be escaped with
3108 backslashes.
3109
311025. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3111 properly. Recipient callout cache records were still being keyed to include
3112 the sender, even when use_sender was set false. This led to far more
3113 callouts that were necessary. The sender is no longer included in the key
3114 when use_sender is false.
3115
311626. Added "control = submission" modifier to ACLs.
3117
311827. Added the ${base62d: operator to decode base 62 numbers.
3119
312028. dnsdb lookups can now access SRV records.
3121
312229. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3123 the configuration file.
3124
312530. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3126 (-v) mode. This makes the output for a verbose queue run more intelligible.
3127
312831. Added a use_postmaster feature to recipient callouts.
3129
313032. Added the $body_zerocount variable, containing the number of binary zero
3131 bytes in the message body.
3132
313333. The time of last modification of the "new" subdirectory is now used as the
3134 "mailbox time last read" when there is a quota error for a maildir
3135 delivery.
3136
313734. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3138
313935. Added +ignore_unknown as a special item in host lists.
3140
314136. Code for decoding IPv6 addresses in host lists is now included, even if
3142 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3143 address was recognized as an IP address, but was then not correctly decoded
3144 into binary, causing unexpected and incorrect effects when compared with
3145 another IP address.
3146
3147
3148Exim version 4.34
3149-----------------
3150
3151 1. Very minor rewording of debugging text in manualroute to say "list of
3152 hosts" instead of "hostlist".
3153
3154 2. If verify=header_syntax was set, and a header line with an unqualified
3155 address (no domain) and a large number of spaces between the end of the
3156 name and the colon was received, the reception process suffered a buffer
3157 overflow, and (when I tested it) crashed. This was caused by some obsolete
3158 code that should have been removed. The fix is to remove it!
3159
3160 3. When running in the test harness, delay a bit after writing a bounce
3161 message to get a bit more predictability in the log output.
3162
3163 4. Added a call to search_tidyup() just before forking a reception process. In
3164 theory, someone could use a lookup in the expansion of smtp_accept_max_
3165 per_host which, without the tidyup, could leave open a database connection.
3166
3167 5. Added the variables $recipient_data and $sender_data which get set from a
3168 lookup success in an ACL "recipients" or "senders" condition, or a router
3169 "senders" option, similar to $domain_data and $local_part_data.
3170
3171 6. Moved the writing of debug_print from before to after the "senders" test
3172 for routers.
3173
3174 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3175 problems for message scanning, either using a data ACL, or using
3176 local_scan() because the Received: header was not generated till after they
3177 were called (in order to set the time as the time of reception completion).
3178 I have revised the way this works. The header is now generated after the
3179 body is received, but before the ACL or local_scan() are called. After they
3180 are run, the timestamp in the header is updated.
3181
3182
3183Exim version 4.33
3184-----------------
3185
3186 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3187 before starting a queue runner without re-exec. This happened only when
3188 deliver_drop_privilege was set or when the Exim user was set to root. The
3189 effect of the bug was that timeouts during subsequent deliveries caused
3190 crashes instead of being properly handled. The handler is now left at its
3191 default (and expected) setting.
3192
3193 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3194 message, again when deliver_drop_privilege is set or Exim is run as root.
3195 The bug described in (1) was not present in this case, but the tidying up
3196 of the other signals was missing. I have made the two cases consistent.
3197
3198 3. The ignore_target_hosts setting on a manualroute router was being ignored
3199 for hosts that were looked up using the /MX notation.
3200
3201 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3202 in domain lists.
3203
3204 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3205 operated on the sender address. After changing the $sender_address to <>
3206 for the sender address verify, Exim was re-instated it as the original
3207 (before rewriting) address, but remembering that it had rewritten it, so it
3208 wasn't rewriting it again. This bug also had the effect of breaking the
3209 sender address verification caching when the sender address was rewritten.
3210
3211 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3212 This has been changed so that if the ip literal address matches
3213 ignore_target_hosts, the router declines.
3214
3215 7. Added expansion conditions match_domain, match_address, and match_local_
3216 part (NOT match_host).
3217
3218 8. The placeholder for the Received: header didn't have a length field set.
3219
3220 9. Added code to Exim itself and to exim_lock to test for a specific race
3221 condition that could lead to file corruption when using MBX delivery. The
3222 issue is with the lockfile that is created in /tmp. If this file is removed
3223 after a process has opened it but before that process has acquired a lock,
3224 there is the potential for a second process to recreate the file and also
3225 acquire a lock. This could lead to two Exim processes writing to the file
3226 at the same time. The added code performs the same test as UW imapd; it
3227 checks after acquiring the lock that its file descriptor still refers to
3228 the same named file.
3229
323010. The buffer for building added header lines was of fixed size, 8192 bytes.
3231 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3232 when Exim is built.
3233
323411. Added the smtp_active_hostname option. If used, this will typically be made
3235 to depend on the incoming interface address. Because $interface_address is
3236 not set up until the daemon has forked a reception process, error responses
3237 that can happen earlier (such as "too many connections") no longer contain
3238 a host name.
3239
324012. If an expansion in a condition on a "warn" statement fails because a lookup
3241 defers, the "warn" statement is abandoned, and the next ACL statement is
3242 processed. Previously this caused the whole ACL to be aborted.
3243
324413. Added the iplsearch lookup type.
3245
324614. Added ident_timeout as a log selector.
3247
324815. Added tls_certificate_verified as a log selector.
3249
325016. Added a global option tls_require_ciphers (compare the smtp transport
3251 option of the same name). This controls incoming TLS connections.
3252
325317. I finally figured out how to make tls_require_ciphers do a similar thing
3254 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3255 before starting the TLS session.
3256
325718. Tabs are now shown as \t in -bP output.
3258
325919. If the log selector return_path_on_delivery was set, Exim crashed when
3260 bouncing a message because it had too many Received: header lines.
3261
326220. If two routers both had headers_remove settings, and the first one included
3263 a superfluous trailing colon, the final name in the first list and the
3264 first name in the second list were incorrectly joined into one item (with a
3265 colon in the middle).
3266
3267
3268Exim version 4.32
3269-----------------
3270
3271 1. Added -C and -D options to the exinext utility, mainly to make it easier
3272 to include in the automated testing, but these could be helpful when
3273 multiple configurations are in use.
3274
3275 2. The exinext utility was not formatting the output nicely when there was
3276 an alternate port involved in the retry record key, nor when there was a
3277 message id as well (for retries that were specific to a specific message
3278 and a specific host). It was also confused by IPv6 addresses, because of
3279 the additional colons they contain. I have fixed the IPv4 problem, and
3280 patched it up to do a reasonable job for IPv6.
3281
3282 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3283 delivery, the log line now contains "pipelined" if PIPELINING was used.
3284
3285 4. An SMTP transport process used to panic and die if the bind() call to set
3286 an explicit outgoing interface failed. This has been changed; it is now
3287 treated in the same way as a connect() failure.
3288
3289 5. A reference to $sender_host_name in the part of a conditional expansion
3290 that was being skipped was still causing a DNS lookup. This no longer
3291 occurs.
3292
3293 6. The def: expansion condition was not recognizing references to header lines
3294 that used bh_ and bheader_.
3295
3296 7. Added the _cache feature to named lists.
3297
3298 8. The code for checking quota_filecount in the appendfile transport was
3299 allowing one more file than it should have been.
3300
3301 9. For compatibility with Sendmail, the command line option
3302
3303 -prval:sval
3304
3305 is equivalent to
3306
3307 -oMr rval -oMs sval
3308
3309 and sets the incoming protocol and host name (for trusted callers). The
3310 host name and its colon can be omitted when only the protocol is to be set.
3311 Note the Exim already has two private options, -pd and -ps, that refer to
3312 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3313 "s", but I don't think that's a major issue.
3314
331510. A number of refactoring changes to the code, none of which should affect
3316 Exim's behaviour:
3317
3318 (a) The number of logging options was getting close to filling up the
3319 32-bit word that was used as a bit map. I have split them into two classes:
3320 those that are passed in the argument to log_write(), and those that are
3321 only ever tested independently outside of that function. These are now in
3322 separate 32-bit words, so there is plenty of room for expansion again.
3323 There is no change in the user interface or the logging behaviour.
3324
3325 (b) When building, for example, log lines, the code previously used a
3326 macro that called string_cat() twice, in order to add two strings. This is
3327 not really sufficiently general. Furthermore, there was one instance where
3328 it was actually wrong because one of the argument was used twice, and in
3329 one call a function was used. (As it happened, calling the function twice
3330 did not affect the overall behaviour.) The macro has been replaced by a
3331 function that can join an arbitrary number of extra strings onto a growing
3332 string.
3333
3334 (c) The code for expansion conditions now uses a table and a binary chop
3335 instead of a serial search (which was left over from when there were very
3336 few conditions). Also, it now recognizes conditions like "pam" even when
3337 the relevant support is not compiled in: a suitably worded error message is
3338 given if an attempt is made to use such a condition.
3339
334011. Added ${time_interval:xxxxx}.
3341
334212. A bug was causing one of the ddress fields not to be passed back correctly
3343 from remote delivery subprocesses. The field in question was not being
3344 subsequently used, so this caused to problems in practice.
3345
334613. Added new log selectors queue_time and deliver_time.
3347
334814. Might have fixed a bug in maildirsizefile handling that threw up
3349 "unexpected character" debug warnings, and recalculated the data
3350 unnecessarily. In any case, I expanded the warning message to give more
3351 information.
3352
335315. Added the message "Restricted characters in address" to the statements in
3354 the default ACL that block characters like @ and % in local parts.
3355
335616. Change 71 for release 4.31 proved to be much less benign that I imagined.
3357 Three changes have been made:
3358
3359 (a) There was a serious bug; a negative response to MAIL caused the whole
3360 recipient domain to be cached as invalid, thereby blocking all messages
3361 to all local parts at the same domain, from all senders. This bug has
3362 been fixed. The domain is no longer cached after a negative response to
3363 MAIL if the sender used is not empty.
3364
3365 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3366 been restored.
3367
3368 (c) A new callout option, "use_sender" has been added for people who want
3369 the modified behaviour.
3370
3371
3372Exim version 4.31
3373-----------------
3374
3375 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3376 Larry Rosenman.
3377
3378 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3379 indeed breaks things for older releases.
3380
3381 3. Added additional logging to the case where there is a problem reading data
3382 from a filter that is running in a subprocess using a pipe, in order to
3383 try to track down a specific problem.
3384
3385 4. Testing facility fudge: when running in the test harness and attempting
3386 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3387 getting "No route to host". Convert this to a timeout.
3388
3389 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3390 warning.
3391
3392 6. Some OS don't have socklen_t but use size_t instead. This affects the
3393 fifth argument of getsockopt() amongst other things. This is now
3394 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3395 can be set for individual OS. I have set it for SunOS5, OSF1, and
3396 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3397 some earlier ones do not.
3398
3399 7. Change 4.30/15 was not doing the test caselessly.
3400
3401 8. The standard form for an IPv6 address literal was being rejected by address
3402 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3403 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3404 this, as well as the form without the "IPv6" on the front (but only when
3405 address literals are enabled, of course).
3406
3407 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3408
340910. Exim crashed if a message with an empty sender address specified by -f
3410 encountered a router with an errors_to setting. This could be provoked only
3411 by a command such as
3412
3413 exim -f "" ...
3414
3415 where an empty string was supplied; "<>" did not hit this bug.
3416
341711. Installed PCRE release 4.5.
3418
341912. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3420 remained set. It is now erased.
3421
342213. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3423 times from message ids (which are base 36 rather than the normal 62).
3424
342514. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3426 were being counted as actual protocol errors, and logged if the log
3427 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3428 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3429 and DATA following a set of rejected RCPTs do not count as protocol errors.
3430 In other words, Exim assumes they were pipelined, though this may not
3431 actually be the case. Of course, in all cases the client gets an
3432 appropriate error code.
3433
343415. If a lookup fails in an ACL condition, a message about the failure may
3435 be available; it is used if testing the ACL cannot continue, because most
3436 such messages specify what the cause of the deferral is. However, some
3437 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3438 that caused an old message to be retained and used if a later statement
3439 caused a defer, replacing the real cause of the deferral.
3440
344116. If an IP address had so many PTR records that the DNS lookup buffer
3442 was not large enough to hold them, Exim could crash while trying to process
3443 the truncated data. It now detects and logs this case.
3444
344517. Further to 4.21/58, another change has been made: if (and only if) the
3446 first line of a message (the first header line) ends with CRLF, a bare LF
3447 in a subsequent header line has a space inserted after it, so as not to
3448 terminate the header.
3449
345018. Refactoring: tidied an ugly bit of code in appendfile that copied data
3451 unnecessarily, used atoi() instead of strtol(), and didn't check the
3452 termination when getting file sizes from file names by regex.
3453
345419. Completely re-implemented the support for maildirsize files, in the light
3455 of a number of problems with the previous contributed implementation
3456 (4.30/29). In particular:
3457
3458 . If the quota is zero, the maildirsize file is maintained, but no quota is
3459 imposed.
3460
3461 . If the maildir directory does not exist, it is created before any attempt
3462 to write a maildirsize file.
3463
3464 . The quota value in the file is just a cache; if the quota is changed in
3465 the transport, the new value overrides.
3466
3467 . A regular expression is available for excluding directories from the
3468 count.
3469
347020. The autoreply transport checks the characters in options that define the
3471 message's headers; it allows continued headers, but it was checking with
3472 isspace() after an embedded newline instead of explicitly looking for a
3473 space or a tab.
3474
347521. If all the "regular" hosts to which an address was routed had passed their
3476 expiry times, and had not reached their retry times, the address was
3477 bounced, even if fallback hosts were defined. Now Exim should go on to try
3478 the fallback hosts.
3479
348022. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3481 equivalent code in the SMTP transport. Some hosts send humungous responses
3482 to HELO/EHLO, more than 1024 it seems.
3483
348423. Refactoring: code in filter.c used (void *) for "any old type" but this
3485 gives compiler warnings in some environments. I've now done it "properly",
3486 using a union.
3487
348824. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3489 (because of problems with the built-in one) was declared to return uschar *
3490 instead of char *, causing compiler failure.
3491
349225. Fixed a file descriptor leak when processing alias/forward files.
3493
349426. Fixed a minor format string issue in dbfn.c.
3495
349627. Typo in exim.c: ("dmbnz" for "dbmnz").
3497
349828. If a filter file refered to $h_xxx or $message_headers, and the headers
3499 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3500 become corrupted.
3501
350229. When a sender address is verified, it is cached, to save repeating the test
3503 when there is more than one recipient in a message. However, when the
3504 verification involves a callout, it is possible for different callout
3505 options to be set for different recipients. It is too complicated to keep
3506 track of this in the cache, so now Exim always runs a verification when a
3507 callout is required, relying on the callout cache for the optimization.
3508 The overhead is duplication of the address routing, but this should not be
3509 too great.
3510
351130. Fixed a bug in callout caching. If a RCPT command caused the sender address
3512 to be verified with callout=postmaster, and the main callout worked but the
3513 postmaster check failed, the verification correctly failed. However, if a
3514 subsequent RCPT command asked for sender verification *without* the
3515 postmaster check, incorrect caching caused this verification also to fail,
3516 incorrectly.
3517
351831. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3519 it was not caching the DNS options (qualify_single, search_parents) that
3520 were used when the lookup failed. A subsequent lookup with different
3521 options therefore always gave the same answer, though there were cases
3522 where it should not have. (Example: a "domains = !$mx_any" option on a
3523 dnslookup router: the "domains" option is always processed without any
3524 widening, but the router might have qualify_single set.) Now Exim uses the
3525 cached value only when the same options are set.
3526
352732. Added John Jetmore's "exipick" utility to the distribution.
3528
352933. GnuTLS: When an attempt to start a TLS session fails for any reason other
3530 than a timeout (e.g. a certificate is required, and is not provided), an
3531 Exim server now closes the connection immediately. Previously it waited for
3532 the client to close - but if the client is SSL, it seems that they each
3533 wait for each other, leading to a delay before one of them times out.
3534
353534: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3536 maintained 0.8.x compatibility because I don't think many are using it, and
3537 it is clearly obsolete.
3538
353935. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3540 transport.
3541
354236. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3543 client certificate was expired. A simple patch fixes this, though I don't
3544 understand the full logic of why the verify callback is called multiple
3545 times.
3546
354737. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3548 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3549 which causes problems with some clients (such as the Certicom SSL Plus
3550 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3551 disables the coutermeasure allowing Eudora to connect."
3552
355338. Exim was not checking that a write() to a log file succeeded. This could
3554 lead to Bad Things if a log got too big, in particular if it hit a file
3555 size limit. Exim now panics and dies if it cannot write to a log file, just
3556 as it does if it cannot open a log file.
3557
355839. Modified OS/Makefile-Linux so that it now contains
3559
3560 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3561
3562 The two -D definitions ensure that Exim is compiled with large file
3563 support, which makes it possible to handle log files that are bigger than
3564 2^31.
3565
356640. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3567 instance) a domain was checked against a named list that involved a lookup,
3568 causing $domain_data to be set, then another domain was checked against the
3569 same list, then the first domain was re-checked, the value of $domain_data
3570 after the final check could be wrong. In particular, if the second check
3571 failed, it could be set empty. This bug probably also applied to
3572 $localpart_data.
3573
357441. The strip_trailing_