2007-03-19 V1.55 Steve Campbell
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
84024b72 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.498 2007/03/21 15:15:12 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
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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
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193PH/42 Another patch from the Sieve maintainer.
194
b4ed4da0 195
5dd1517f
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196Exim version 4.66
197-----------------
198
199PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
200 fixed by 4.65/MH/01 (is this a record?) are fixed:
201
202 (i) An empty string was always treated as zero by the numeric comparison
203 operators. This behaviour has been restored.
204
205 (ii) It is documented that the numeric comparison operators always treat
206 their arguments as decimal numbers. This was broken in that numbers
207 starting with 0 were being interpreted as octal.
208
209 While fixing these problems I realized that there was another issue that
210 hadn't been noticed. Values of message_size_limit (both the global option
211 and the transport option) were treated as octal if they started with 0.
212 The documentation was vague. These values are now always treated as
213 decimal, and I will make that clear in the documentation.
214
215
93cfa765
TK
216Exim version 4.65
217-----------------
218
219TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
220 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
221 versions. (#438)
222
d6066548
MH
223MH/01 Don't check that the operands of numeric comparison operators are
224 integers when their expansion is in "skipping" mode (fixes bug
225 introduced by 4.64-PH/07).
226
4362ff0d
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227PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
228 child addresses, Exim now panics and dies. Previously, because the count
229 is held in a short int, deliveries were likely to be lost. As such a
230 large number of recipients for a single message is ridiculous
231 (performance will be very, very poor), I have chosen to impose a limit
232 rather than extend the field.
233
93cfa765 234
944e9e9c
TF
235Exim version 4.64
236-----------------
aa41d2de 237
21d74bd9
TK
238TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
239 leftover -K file (the existence of which was triggered by #402).
240 While we were at it, introduced process PID as part of the -K
241 filename. This should rule out race conditions when creating
242 these files.
243
244TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
245 processing considerably. Previous code took too long for large mails,
246 triggering a timeout which in turn triggers #401.
247
248TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
249 in the DK code in transports.c. sendfile() is not really portable,
250 hence the _LINUX specificness.
944e9e9c
TF
251
252TF/01 In the add_headers option to the mail command in an Exim filter,
253 there was a bug that Exim would claim a syntax error in any
254 header after the first one which had an odd number of characters
255 in the field name.
256
2b1c6e3a
PH
257PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
258 callout verification, Exim cached a "reject" for the entire domain. This
259 is correct for most verifications, but it is not correct for a recipient
260 verification with use_sender or use_postmaster set, because in that case
261 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
262 case of MAIL FROM:<> rejection from other early rejections (e.g.
263 rejection of HELO). When verifying a recipient using a non-null MAIL
264 address, the cache is ignored if it shows MAIL FROM:<> rejection.
265 Whatever the result of the callout, the value of the domain cache is
266 left unchanged (for any other kind of callout, getting as far as trying
267 RCPT means that the domain itself is ok).
268
1f872c80
PH
269PH/02 Tidied a number of unused variable and signed/unsigned warnings that
270 gcc 4.1.1 threw up.
271
272PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
273 manifest itself as EPIPE rather than ECONNECT. When tidying away a
274 session, the daemon ignores ECONNECT errors and logs others; it now
275 ignores EPIPE as well.
276
d203e649
PH
277PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
278 (quoted-printable decoding).
279
cc2ed8f7 280PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 281 later the small subsequent patch to fix an introduced bug.
f951fd57 282
ddfcd446
PH
283PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
284
d45b1de8
PH
285PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
286
287PH/08 An error is now given if message_size_limit is specified negative.
288
38a0a95f 289PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 290 to be given (somewhat) arbitrary names.
38a0a95f 291
a2405d83
JJ
292JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
293 in 4.64-PH/09.
294
295JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
296 miscellaneous code fixes
297
6ea85e9a
PH
298PH/10 Added the log_reject_target ACL modifier to specify where to log
299 rejections.
300
26da7e20
PH
301PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
302 hostname. This is wrong, because it relates to the incoming message (and
303 probably the interface on which it is arriving) and not to the outgoing
304 callout (which could be using a different interface). This has been
305 changed to use the value of the helo_data option from the smtp transport
306 instead - this is what is used when a message is actually being sent. If
307 there is no remote transport (possible with a router that sets up host
308 addresses), $smtp_active_hostname is used.
6ea85e9a 309
14aa5a05 310PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 311 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
312 (a) The code assumed that strncpy() returns a negative number on buffer
313 overflow, which isn't the case. Replaced with Exim's string_format()
314 function.
315 (b) There were several signed/unsigned issues. I just did the minimum
316 hacking in of casts. There is scope for a larger refactoring.
317 (c) The code used strcasecmp() which is not a standard C function.
318 Replaced with Exim's strcmpic() function.
319 (d) The code set only $1; it now sets $auth1 as well.
320 (e) A simple test gave the error "authentication client didn't specify
321 service in request". It would seem that Dovecot has changed its
322 interface. Fortunately there's a specification; I followed it and
323 changed what the client sends and it appears to be working now.
324
ff75a1f7
PH
325PH/13 Added $message_headers_raw to provide the headers without RFC 2047
326 decoding.
327
e6f6568e
PH
328PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
329 address A is aliased to B and C, where B exists and C does not. Without
330 -v the output is "A verified" because verification stops after a
331 successful redirection if more than one address is generated. However,
332 with -v the child addresses are also verified. Exim was outputting "A
333 failed to verify" and then showing the successful verification for C,
334 with its parentage. It now outputs "B failed to verify", showing B's
335 parentage before showing the successful verification of C.
336
d6f6e0dc
PH
337PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
338 look up a TXT record in a specific list after matching in a combined
339 list.
340
322050c2
PH
341PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
342 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
343 they consult the DNS. I had assumed they would set it the way they
344 wanted; and indeed my experiments on Linux seem to show that in some
345 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
346 To be on the safe side, however, I have now made the interface to
347 host_find_byname() similar to host_find_bydns(), with an argument
348 containing the DNS resolver options. The host_find_byname() function now
349 sets these options at its start, just as host_find_bydns() does. The smtp
350 transport options dns_qualify_single and dns_search_parents are passed to
351 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
352 of host_find_byname() use the default settings of RES_DEFNAMES
353 (qualify_single) but not RES_DNSRCH (search_parents).
354
08955dd3
PH
355PH/17 Applied (a modified version of) Nico Erfurth's patch to make
356 spool_read_header() do less string testing, by means of a preliminary
357 switch on the second character of optional "-foo" lines. (This is
358 overdue, caused by the large number of possibilities that now exist.
359 Originally there were few.) While I was there, I also converted the
360 str(n)cmp tests so they don't re-test the leading "-" and the first
361 character, in the hope this might squeeze out yet more improvement.
362
1eccaa59
PH
363PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
364 flag allowing group syntax was set by the header_syntax check but not
365 turned off, possible causing trouble later; (2) The flag was not being
366 set at all for the header_verify test, causing "group"-style headers to
367 be rejected. I have now set it in this case, and also caused header_
368 verify to ignore an empty address taken from a group. While doing this, I
369 came across some other cases where the code for allowing group syntax
370 while scanning a header line wasn't quite right (mostly, not resetting
371 the flag correctly in the right place). These bugs could have caused
372 trouble for malformed header lines. I hope it is now all correct.
373
602e59e5
PH
374PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
375 with the "reply" argument non-NULL. The code, however (which originally
376 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
377 but it didn't always do it. This confused somebody who was copying the
378 code for some other use. I have removed all the tests.
379
411ef850
PH
380PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
381 feature that was used to support insecure browsers during the U.S. crypto
382 embargo. It requires special client support, and Exim is probably the
383 only MTA that supported it -- and would never use it because real RSA is
384 always available. This code has been removed, because it had the bad
385 effect of slowing Exim down by computing (never used) parameters for the
386 RSA_EXPORT functionality.
387
7befa435
PH
388PH/21 On the advice of Timo Sirainen, added a check to the dovecot
389 authenticator to fail if there's a tab character in the incoming data
390 (there should never be unless someone is messing about, as it's supposed
391 to be base64-encoded). Also added, on Timo's advice, the "secured" option
392 if the connection is using TLS or if the remote IP is the same as the
393 local IP, and the "valid-client-cert option" if a client certificate has
394 been verified.
395
48da4259 396PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
397 authenticators. This can be used for authorization after authentication
398 succeeds. (In the case of plaintext, it servers for both authentication
399 and authorization.)
400
48da4259
PH
401PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
402 if any retry times were supplied.
403
d1d5595c
PH
404PH/24 Exim crashed if verify=helo was activated during an incoming -bs
405 connection, where there is no client IP address to check. In this
406 situation, the verify now always succeeds.
407
0ef732d9
PH
408PH/25 Applied John Jetmore's -Mset patch.
409
328895cc
PH
410PH/26 Added -bem to be like -Mset, but loading a message from a file.
411
fd700877
PH
412PH/27 In a string expansion for a processed (not raw) header when multiple
413 headers of the same name were present, leading whitespace was being
414 removed from all of them, but trailing whitespace was being removed only
415 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
416 before concatenation. Completely empty headers in a concatenation (as
417 before) are ignored.
fd700877 418
8dce1a6f
PH
419PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
420 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
421
17af4a17
PH
422PH/29 [Removed. This was a change that I later backed out, and forgot to
423 correct the ChangeLog entry (that I had efficiently created) before
424 committing the later change.]
f6c332bd
PH
425
426PH/30 Exim was sometimes attempting to deliver messages that had suffered
427 address errors (4xx response to RCPT) over the same connection as other
428 messages routed to the same hosts. Such deliveries are always "forced",
429 so retry times are not inspected. This resulted in far too many retries
430 for the affected addresses. The effect occurred only when there were more
431 hosts than the hosts_max_try setting in the smtp transport when it had
432 the 4xx errors. Those hosts that it had tried were not added to the list
433 of hosts for which the message was waiting, so if all were tried, there
434 was no problem. Two fixes have been applied:
435
436 (i) If there are any address or message errors in an SMTP delivery, none
437 of the hosts (tried or untried) are now added to the list of hosts
438 for which the message is waiting, so the message should not be a
439 candidate for sending over the same connection that was used for a
440 successful delivery of some other message. This seems entirely
441 reasonable: after all the message is NOT "waiting for some host".
442 This is so "obvious" that I'm not sure why it wasn't done
443 previously. Hope I haven't missed anything, but it can't do any
444 harm, as the worst effect is to miss an optimization.
445
446 (ii) If, despite (i), such a delivery is accidentally attempted, the
447 routing retry time is respected, so at least it doesn't keep
448 hammering the server.
449
c1114884
PH
450PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
451 in ${readsocket because some servers need this prod.
452
7a0743eb
PH
453PH/32 Added some extra debug output when updating a wait-xxx database.
454
0d85fa3f
PH
455PH/33 The hint "could be header name not terminated by colon", which has been
456 given for certain expansion errors for a long time, was not being given
457 for the ${if def:h_colon_omitted{... case.
458
1bf43b78
PH
459PH/34 The spec says: "With one important exception, whenever a domain list is
460 being scanned, $domain contains the subject domain." There was at least
461 one case where this was not true.
462
520de300
PH
463PH/35 The error "getsockname() failed: connection reset by peer" was being
464 written to the panic log as well as the main log, but it isn't really
465 panic-worthy as it just means the connection died rather early on. I have
466 removed the panic log writing for the ECONNRESET error when getsockname()
467 fails.
468
48c7f9e2
PH
469PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
470 runs only) independently of the message's sender address. This meant
471 that, if the 4xx error was in fact related to the sender, a different
472 message to the same recipient with a different sender could confuse
473 things. In particualar, this can happen when sending to a greylisting
474 server, but other circumstances could also provoke similar problems.
475 I have changed the default so that the retry time for these errors is now
476 based a combination of the sender and recipient addresses. This change
477 can be overridden by setting address_retry_include_sender=false in the
478 smtp transport.
479
99ea1c86
PH
480PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
481 remote server are returned as part of bounce messages. This was not
482 happening for LMTP over a pipe (the lmtp transport), but now it is the
483 same for both kinds of LMTP.
484
a2042e78
PH
485PH/38 Despite being documented as not happening, Exim was rewriting addresses
486 in header lines that were in fact CNAMEs. This is no longer the case.
487
4fbcfc2e
PH
488PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
489 and queue runs started by the daemon processed all messages. This has
490 been fixed so that -R and -S can now usefully be given with -q<time>.
491
aa41d2de
PH
492PH/40 Import PCRE release 6.7 (fixes some bugs).
493
af561417
PH
494PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
495
3cc66b45
PH
496PH/42 Give an error if -q is specified more than once.
497
194cc0e4
PH
498PH/43 Renamed the variables $interface_address and $interface_port as
499 $received_ip_address and $received_port, to make it clear that these
500 values apply to message reception, and not to the outgoing interface when
501 a message is delivered. (The old names remain recognized, of course.)
502
a401ddaa
PH
503PH/44 There was no timeout on the connect() call when using a Unix domain
504 socket in the ${readsocket expansion. There now is.
505
4e88a19f
PH
506PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
507 be meaningful with "accept".
508
d7d7b289
SC
509SC/01 Eximstats V1.43
510 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
511
512SC/02 Eximstats V1.44
513 Use a glob alias rather than an array ref in the generated
514 parser. This improves both readability and performance.
515
516SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
517 Collect SpamAssassin and rejection statistics.
518 Don't display local sender or destination tables unless
519 there is data to show.
520 Added average volumes into the top table text output.
521
522SC/04 Eximstats V1.46
523 Collect data on the number of addresses (recipients)
524 as well as the number of messages.
525
526SC/05 Eximstats V1.47
527 Added 'Message too big' to the list of mail rejection
528 reasons (thanks to Marco Gaiarin).
529
530SC/06 Eximstats V1.48
531 Mainlog lines which have GMT offsets and are too short to
532 have a flag are now skipped.
533
534SC/07 Eximstats V1.49 (Alain Williams)
535 Added the -emptyok flag.
536
537SC/08 Eximstats V1.50
538 Fixes for obtaining the IP address from reject messages.
539
0ea2a468
JJ
540JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
541 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
542 whitesspace changes from 4.64-PH/27
543
544JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
545 match 4.64-PH/13
546
547JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
548 are found, allow negative numbers in numeric criteria)
549
550JJ/06 exipick.20061117.2, added new $message_body_missing variable
551
552JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
553 to match changes made in 4.64-PH/43
554
8a10f5a4
PH
555PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
556
30e18802
PH
557PH/47 Put in an explicit test for a DNS lookup of an address record where the
558 "domain" is actually an IP address, and force a failure. This locks out
559 those revolvers/nameservers that support "A-for-A" lookups, in
560 contravention of the specifications.
561
55728a4f
PH
562PH/48 When a host name was looked up from an IP address, and the subsequent
563 forward lookup of the name timed out, the host name was left in
564 $sender_host_name, contrary to the specification.
d7d7b289 565
d7837193
PH
566PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
567 restricted to single-key lookups, Exim was not diagnosing an error if
568 * or *@ was used with a query-style lookup.
569
87054a31
PH
570PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
571
ea2c01d2
MH
572MH/01 local_scan ABI version incremented to 1.1. It should have been updated
573 long ago, but noone interested enough thought of it. Let's just say that
574 the "1.1" means that there are some new functions that weren't there at
575 some point in the past.
576
e4fa6968
PH
577PH/51 Error processing for expansion failure of helo_data from an smtp
578 transport during callout processing was broken.
579
56f5d9bd
PH
580PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
581 tested/used via the -bh/-bhc/-bs options.
582
922e1c28
PH
583PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
584 bug, fixed in subsequent PCRE releases).
585
21eb6e72
PH
586PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
587 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
588
a0540757
PH
589PH/55 Check for a ridiculously long file name in exim_dbmbuild.
590
944e9e9c 591
478be7b0
SC
592Exim version 4.63
593-----------------
594
595SC/01 Use a glob alias rather than an array ref in eximstats generated
596 parser. This improves both readability and performance.
597
598SC/02 Collect SpamAssassin and rejection statistics in eximstats.
599 Don't display local sender or destination tables in eximstats unless
600 there is data to show.
601 Added average volumes into the eximstats top table text output.
602
603SC/03 Collect data on the number of addresses (recipients) as well
604 as the number of messages in eximstats.
605
2b965a65
TF
606TF/01 Correct an error in the documentation for the redirect router. Exim
607 does (usually) call initgroups() when daemonizing.
478be7b0 608
45b91596
PH
609TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
610 with consistent privilege compared to when running as a daemon.
478be7b0 611
c59f5781
TF
612TF/03 Note in the spec that $authenticated_id is not set for local
613 submissions from trusted users.
614
90fc3069
TF
615TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
616 Thanks to Dean Brooks <dean@iglou.com> for the patch.
617
6083aca0
TF
618TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
619 by adding some example configuration directives to the default
620 configuration file. A little bit of work is required to uncomment the
621 directives and define how usernames and passwords are checked, but
622 there is now a framework to start from.
623
765b530f
PH
624PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
625 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
626 without this. I don't know how relevant this is to other LDAP libraries.
627
4e167a8c
PH
628PH/02 Add the verb name to the "unknown ACL verb" error.
629
4608d683
PH
630PH/03 Magnus Holmgren's patch for filter_prepend_home.
631
b8dc3e4a
PH
632PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
633
5418e93b
PH
634PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
635 directory not expanded when it should be if an expanded home directory
636 was set for the address (which is overridden by the transport).
637
b4a9bda2
PH
638PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
639 libradius.
640
45b91596
PH
641PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
642 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
643 because it is too late at that time, and has no effect.
644
5547e2c5
PH
645PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
646 security issue with \' (bugzilla #107). I could not use the
647 PQescapeStringConn() function, because it needs a PGconn value as one of
648 its arguments.
649
dbcef0ea
PH
650PH/08 When testing addresses using -bt, indicate those final addresses that
651 are duplicates that would not cause an additional delivery. At least one
652 person was confused, thinking that -bt output corresponded to deliveries.
653 (Suppressing duplicates isn't a good idea as you lose the information
654 about possibly different redirections that led to the duplicates.)
655
25257489
PH
656PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
657 systems where poll() doesn't work, in particular OS X.
658
c816d124
PH
659PH/10 Added more information to debugging output for retry time not reached.
660
a9ccd69a
PH
661PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
662 operations in malware.c.
663
75fa1910
PH
664PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
665 signatures.
666
a7d7aa58
PH
667PH/13 If write_rejectlog was set false when logging was sent to syslog with
668 syslog_duplication set false, log lines that would normally be written
669 both the the main log and to the reject log were not written to syslog at
670 all.
671
42119b09
PH
672PH/14 In the default configuration, change the use of "message" in ACL warn
673 statements to "add_header".
674
41609df5
PH
675PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
676 not followed by a command (e.g. "seen endif").
677
a5bd321b
PH
678PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
679 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
680 latter.
681
e85a7ad5 682PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
683 so that it is now:
684
e85a7ad5
PH
685 ${if or { \
686 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
687 { match{$h_precedence:}{(?i)bulk|list|junk} } \
688 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
689 }{no}{yes}}
690
e85a7ad5
PH
691 The Auto-Submitted: and various List- headers are standardised, whereas I
692 don't think Precedence: ever was.
5dff5817 693
d8fe1c03
PH
694PH/18 Refactored debugging code in route_finduser() to show more information,
695 in particular, the error code if getpwnam() issues one.
696
16282d2b
PH
697PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
698 This is apparently needed in addition to the PH/07 change above to avoid
699 any possible encoding problems.
700
35d40a98
PH
701PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
702 but not after initializing Perl.
703
034d99ab
PH
704PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
705 output them only if debugging. By default they are written stderr,
706 apparently, which is not desirable.
707
6ec97b1b
PH
708PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
709 queries.
710
e22ca4ac
JJ
711JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
712 --not options
713
714JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
715
33d73e3b
PH
716PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
717 authenticated or an ident call has been made. Suppress the default
718 values for $authenticated_id and $authenticated_sender (but permit -oMai
719 and -oMas) when testing with -bh.
720
9ecb03f3
PH
721PH/24 Re-jigged the order of the tests in the default configuration so that the
722 tests for valid domains and recipients precede the DNS black list and CSA
723 tests, on the grounds that those ones are more expensive.
724
084efe8d
PH
725PH/25 Exim was not testing for a space following SMTP commands such as EHLO
726 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
727 This bug exists in every version of Exim that I still have, right back to
728 0.12.
729
366fc9f0
PH
730PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
731 However, an attempt to turn on case-sensitivity in a regex key by
732 including (?-i) didn't work because the subject string was already
733 lowercased, and the effects were non-intuitive. It turns out that a
734 one-line patch can be used to allow (?-i) to work as expected.
735
c59f5781 736
c887c79e
TF
737Exim version 4.62
738-----------------
739
740TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
741 other effects) broke the use of negated acl sub-conditions.
742
1cce3af8
PH
743PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
744 patch).
745
afb3eaaf
PH
746PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
747 "Deny" causes Exim to reject the incoming connection with a 554 error.
748 Unfortunately, if there is a major crisis, such as a disk failure,
749 tcp-wrappers gives "deny", whereas what one would like would be some
750 kind of temporary error. A kludge has been added to help with this.
751 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
752 554 error is used if errno is still zero or contains ENOENT (which occurs
753 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
754 451 error is used.
755
e173618b
PH
756PH/03 Add -lutil to the default FreeBSD LIBS setting.
757
dd16e114
PH
758PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
759 errors. Otherwise a message that provokes a temporary error (when other
760 messages do not) can cause a whole host to time out.
761
f7fd3850
PH
762PH/05 Batch deliveries by appendfile and pipe transports did not work when the
763 addresses were routed directly to files or pipes from a redirect router.
764 File deliveries just didn't batch; pipe deliveries might have suffered
765 odd errors.
766
d87df92c
PH
767PH/06 A failure to get a lock for a hints database would erroneously always say
768 "Failed to get write lock", even when it was really a read lock.
769
7e9f683d
PH
770PH/07 The appendfile transport was creating MBX lock files with a fixed mode
771 of 0600. This has been changed to use the value of the lockfile_mode
772 option (which defaults to 0600).
773
bfad5236
PH
774PH/08 Applied small patch from the Sieve maintainer.
775
01c490df
PH
776PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
777 folder from quota calculations, a direct delivery into this folder messed
778 up the contents of the maildirsize file. This was because the regex was
779 used only to exclude .Trash (or whatever) when the size of the mailbox
780 was calculated. There was no check that a delivery was happening into an
781 excluded directory. This bug has been fixed by ignoring all quota
782 processing for deliveries into excluded directories.
783
d6629cdc
PH
784PH/10 Added the maildirfolder_create_regex option to appendfile.
785
1cce3af8 786
214e2000
PH
787Exim version 4.61
788-----------------
789
790PH/01 The code for finding all the local interface addresses on a FreeBSD
791 system running IPv6 was broken. This may well have applied to all BSD
792 systems, as well as to others that have similar system calls. The broken
793 code found IPv4 interfaces correctly, but gave incorrect values for the
794 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
795 that it would not match correctly against @[] and not recognize the IPv6
796 addresses as local.
797
f9daeae0
PH
798PH/02 The ipliteral router was not recognizing addresses of the form user@
799 [ipv6:....] because it didn't know about the "ipv6:" prefix.
800
7e66e54d
PH
801PH/03 Added disable_ipv6.
802
c8ea1597
PH
803PH/04 Changed $reply_address to use the raw form of the headers instead of the
804 decoded form, because it is most often used to construct To: headers
805 lines in autoreplies, and the decoded form may well be syntactically
806 invalid. However, $reply_address has leading white space removed, and all
807 newlines turned into spaces so that the autoreply transport does not
808 grumble.
809
911f6fde
PH
810PH/05 If group was specified without a user on a router, and no group or user
811 was specified on a transport, the group from the router was ignored.
812
47ca6d6c
PH
813PH/06 Increased the number of ACL variables to 20 of each type, and arranged
814 for visible compile-time settings that can be used to change these
815 numbers, for those that want even more. Backwards compatibility with old
816 spool files has been maintained. However, going back to a previous Exim
817 release will lost any variables that are in spool files.
818
ed0e9820
PH
819PH/07 Two small changes when running in the test harness: increase delay when
820 passing a TCP/IP connection to a new process, in case the original
821 process has to generate a bounce, and remove special handling of
822 127.0.0.2 (sic), which is no longer necessary.
823
eff37e47
PH
824PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
825 be the same on different OS.
826
1921d2ea
PH
827PH/09 Moved a debug statement in filter processing to avoid a race problem when
828 testing.
829
b3f69ca8
JJ
830JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
831 whether --show-vars was specified or not
832
833JJ/02 exipick: Added support for new ACL variable spool format introduced
834 in 4.61-PH/06
835
424a1c63
PH
836PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
837 syntactically invalid From: or Reply-to: line, and a filter used this to
838 generate an autoreply, and therefore failed to obtain an address for the
839 autoreply, Exim could try to deliver to a non-existent relative file
840 name, causing unrelated and misleading errors. What now happens is that
841 it logs this as a hard delivery error, but does not attempt to create a
842 bounce message.
843
7a100415
PH
844PH/11 The exinext utility has a -C option for testing purposes, but although
845 the given file was scanned by exinext itself; it wasn't being passed on
846 when Exim was called.
847
19b9dc85
PH
848PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
849 an end-of-file indication when reading a command response.
850
309bd837
PH
851PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
852 compiled. In many other places in Exim, IPv6 addresses are always
853 recognized, so I have changed this. It also means that IPv4 domain
854 literals of the form [IPV4:n.n.n.n] are now always recognized.
855
59e82a2a
PH
856PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
857 used if the router is not running as root, for example, when verifying at
858 ACL time, or when using -bh. The debugging output from this situation was
859 non-existent - all you got was a failure to exec. I have made two
860 changes:
861
862 (a) Failures to set uid/gid, the current directory, or a process leader
863 in a subprocess such as that created by queryprogram now generate
864 suitable debugging ouput when -d is set.
865
866 (b) The queryprogram router detects when it is not running as root,
867 outputs suitable debugging information if -d is set, and then runs
868 the subprocess without attempting to change uid/gid.
869
9edc04ce
PH
870PH/15 Minor change to Makefile for building test_host (undocumented testing
871 feature).
872
1349e1e5
PH
873PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
874 additional section of a DNS packet that returns MX or SRV records.
875 Instead, it always explicitly searches for A/AAAA records. This avoids
876 major problems that occur when a DNS server includes only records of one
877 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
878 fixed another bug: if SRV records were looked up and the corresponding
879 address records were *not* found in the additional section, the port
880 values from the SRV records were lost.
881
ea49d0e1
PH
882PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
883 using the correct key (the original address) when searching the retry
884 rules in order to find which one to use for generating the retry hint.
885
064a94c9
PH
886PH/18 If quota_warn_message contains a From: header, Exim now refrains from
887 adding the default one. Similarly, if it contains a Reply-To: header, the
888 errors_reply_to option, if set, is not used.
889
727071f8
PH
890PH/19 When calculating a retry time, Exim used to measure the "time since
891 failure" by looking at the "first failed" field in the retry record. Now
892 it does not use this if it is later than than the arrival time of the
893 message. Instead it uses the arrival time. This makes for better
894 behaviour in cases where some deliveries succeed, thus re-setting the
895 "first failed" field. An example is a quota failure for a huge message
896 when small messages continue to be delivered. Without this change, the
897 "time since failure" will always be short, possible causing more frequent
898 delivery attempts for the huge message than are intended.
dd16e114 899 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 900
f78eb7c6
PH
901PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
902 $1, $2, $3) because the numerical variables can be reset during some
903 expansion items (e.g. "match"), thereby losing the authentication data.
904
21c28500
PH
905PH/21 Make -bV show the size of off_t variables so that the test suite can
906 decide whether to run tests for quotas > 2G.
907
908PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
909 mailbox_size, and mailbox_filecount in the appendfile transport. If a
910 filecount value is greater than 2G or if a quota value is greater than 2G
911 on a system where the size of off_t is not greater than 4, a panic error
912 is given.
913
1688f43b
PH
914PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
915 never match. The debug and -bh output now contains an explicit error
916 message indicating a malformed IPv4 address or mask.
917
918PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
919 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
920 PH/23 above applies.
921
9675b384
PH
922PH/25 Do not write to syslog when running in the test harness. The only
923 occasion when this arises is a failure to open the main or panic logs
924 (for which there is an explicit test).
925
6a3f1455
PH
926PH/26 Added the /no_tell option to "control=freeze".
927
dac79d3e
PH
928PH/27 If a host name lookup failed very early in a connection, for example, if
929 the IP address matched host_lookup and the reverse lookup yielded a name
930 that did not have a forward lookup, an error message of the form "no IP
931 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
932 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 933
5977a0b3
PH
934PH/28 An enabling patch from MH: add new function child_open_exim2() which
935 allows the sender and the authenticated sender to be set when
936 submitting a message from within Exim. Since child_open_exim() is
937 documented for local_scan(), the new function should be too.
938
c91535f3
PH
939PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
940 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
941 results in an empty string is now treated as unset.
942
0d46a8c8
PH
943PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
944
278c6e6c
PH
945PH/31 Added sender_verify_fail logging option.
946
2cbb4081
PH
947PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
948 needed by RFC 822 but not by RFC 2822 was commented out. I have now
949 tidied the source and removed it altogether.
950
3eef829e
PH
951PH/33 When a queue run was abandoned because the load average was too high, a
952 log line was always written; now it is written only if the queue_run log
953 selector is set. In addition, the log line for abandonment now contains
954 information about the queue run such as the pid. This is always present
955 in "start" and "stop" lines but was omitted from the "abandon" line.
956
1ab95fa6
PH
957PH/34 Omit spaces between a header name and the colon in the error message that
958 is given when verify = headers_syntax fails (if there are lots of them,
959 the message gets confusing).
960
230205fc
PH
961PH/35 Change the default for dns_check_names_pattern to allow slashes within
962 names, as there are now some PTR records that contain slashes. This check
963 is only to protect against broken name servers that fall over on strange
964 characters, so the fact that it applies to all lookups doesn't matter.
965
75e0e026
PH
966PH/36 Now that the new test suite is complete, we can remove some of the
967 special code in Exim that was needed for the old test suite. For example,
968 sorting DNS records because real resolvers return them in an arbitrary
969 order. The new test suite's fake resolver always returns records in the
970 same order.
971
972PH/37 When running in the test harness, use -odi for submitted messages (e.g.
973 bounces) except when queue_only is set, to avoid logging races between
974 the different processes.
975
145396a6
PH
976PH/38 Panic-die if .include specifies a non-absolute path.
977
3cd34f13
PH
978PH/39 A tweak to the "H" retry rule from its user.
979
11121d3d
JJ
980JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
981 a label. They prevented compilation on older perls.
982
983JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
984 a warning to be raised on newish perls.
985
986JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
987 on queue. Changes to match documented behaviour of showing count of
988 messages matching specified criteria.
989
8def5aaf
PH
990PH/40 Changed the default ident timeout from 30s to 5s.
991
929ba01c
PH
992PH/41 Added support for the use of login_cap features, on those BSD systems
993 that have them, for controlling the resources used by pipe deliveries.
994
2632889e
PH
995PH/42 The content-scanning code uses fopen() to create files in which to put
996 message data. Previously it was not paying any attention to the mode of
997 the files. Exim runs with umask(0) because the rest of the code creates
998 files with open(), and sets the required mode explicitly. Thus, these
999 files were ending up world-writeable. This was not a big issue, because,
1000 being within the spool directory, they were not world-accessible. I have
1001 created a function called modefopen, which takes an additional mode
1002 argument. It sets umask(777), creates the file, chmods it to the required
1003 mode, then resets the umask. All the relevant calls to fopen() in the
1004 content scanning code have been changed to use this function.
1005
944a9c55
PH
1006PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1007 to 24 hours. This avoids potential overflow problems when processing G
1008 and H retry rules. I suspect nobody ever tinkers with this value.
1009
4a23603b
PH
1010PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1011
4730f942
PH
1012PH/45 When the plaintext authenticator is running as a client, the server's
1013 challenges are checked to ensure they are valid base64 strings. By
1014 default, the authentication attempt is cancelled if an invalid string is
1015 received. Setting client_ignore_invalid_base64 true ignores these errors.
1016 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1017 they are received. Thus, the responses can be made to depend on the
1018 challenges. If an invalid string is ignored, an empty string is placed in
1019 the variable.
1020
30dba1e6
PH
1021PH/46 Messages that are created by the autoreply transport now contains a
1022 References: header, in accordance with RFCs 2822 and 3834.
1023
382afc6b
PH
1024PH/47 Added authenticated_sender_force to the smtp transport.
1025
a86229cf
PH
1026PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1027
50c99ba6
PH
1028PH/49 Installed latest patch from the Sieve maintainer.
1029
d35e429d
PH
1030PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1031 was also set, the appendfile transport was unnecessarily scanning a
1032 directory of message files (e.g. for maildir delivery) to find the count
1033 of files (along with the size), even though it did not need this
1034 information. It now does the scan only if it needs to find either the
1035 size of the count of files.
1036
f90d018c
PH
1037PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1038
75def545
PH
1039PH/52 Two bugs concerned with error handling when the smtp transport is
1040 used in LMTP mode:
1041
1042 (i) Exim was not creating retry information for temporary errors given
1043 for individual recipients after the DATA command when the smtp transport
1044 was used in LMTP mode. This meant that they could be retried too
1045 frequently, and not timed out correctly.
1046
1047 (ii) Exim was setting the flag that allows error details to be returned
1048 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1049 recipients that were returned after the DATA command.
1050
1051PH/53 This is related to PH/52, but is more general: for any failing address,
1052 when detailed error information was permitted to be returned to the
1053 sender, but the error was temporary, then after the final timeout, only
1054 "retry timeout exceeded" was returned. Now it returns the full error as
1055 well as "retry timeout exceeded".
1056
c46782ef
PH
1057PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1058 do this, and (what is worse) MTAs that accept it.
1059
71fafd95
PH
1060PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1061 will now be deprecated.
1062
2c5db4fd
PH
1063PH/56 New os.c-cygwin from the Cygwin maintainer.
1064
9cf6b11a
JJ
1065JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1066 formats (previously only available in exim formats via -bpr, -bpru,
1067 and -bpra. Now also available in native and exiqgrep formats)
1068
1069JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1070 with very large, slow to parse queues
1071
1072JJ/08 exipick: added ! as generic prefix to negate any criteria format
1073
1074JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1075
898d150f
PH
1076PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1077 responses to authentication challenges, though it was showing the
1078 challenges; (ii) I've removed the CR characters from the debug output for
1079 SMTP output lines.
1080
46218253
PH
1081PH/58 Allow for the insertion of a newline as well as a space when a string
1082 is turned into more than one encoded-word during RFC 2047 encoding. The
1083 Sieve code now uses this.
1084
e97957bc
PH
1085PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1086 data_4xx, lost_connection, tls_required.
1087
81e509d7
PH
1088PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1089 message was being sent as an SMTP response.
1090
3d240ff7
PH
1091PH/61 Add -l and -k options to exicyclog.
1092
b37c4101
PH
1093PH/62 When verifying, if an address was redirected to one new address, so that
1094 verification continued, and the new address failed or deferred after
1095 having set something in $address_data, the value of $address_data was not
1096 passed back to the ACL. This was different to the case when no
1097 redirection occurred. The value is now passed back in both cases.
1098
79378e0f
PH
1099PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1100 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1101 use login_cap.h, so on its own it isn't the distinguishing feature. The
1102 new name refers directly to the setclassresources() function.
1103
e49c7bb4
PH
1104PH/65 Added configuration files for NetBSD3.
1105
d114ec46
PH
1106PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1107
f3d7df6c
PH
1108PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1109 is preferred over IPv4.
1110
715ab376
PH
1111PH/68 The bounce_return_message and bounce_return_body options were not being
1112 honoured for bounces generated during the reception of non-SMTP messages.
1113 In particular, this applied to messages rejected by the ACL. This bug has
1114 been fixed. However, if bounce_return_message is true and bounce_return_
1115 body is false, the headers that are returned for a non-SMTP message
1116 include only those that have been read before the error was detected.
1117 (In the case of an ACL rejection, they have all been read.)
1118
6b31b150
PH
1119PH/69 The HTML version of the specification is now built in a directory called
1120 spec_html instead of spec.html, because the latter looks like a path with
1121 a MIME-type, and this confuses some software.
1122
1123PH/70 Catch two compiler warnings in sieve.c.
1124
d515a917
PH
1125PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1126 function verify_get_ident() calls ip_connect() to connect a socket, but
1127 if the "connect()" function timed out, ip_connect() used to close the
1128 socket. However, verify_get_ident() also closes the socket later, and in
1129 between Exim writes to the log, which may get opened at this point. When
1130 the socket was closed in ip_connect(), the log could get the same file
1131 descriptor number as the socket. This naturally causes chaos. The fix is
1132 not to close the socket in ip_connect(); the socket should be closed by
1133 the function that creates it. There was only one place in the code where
1134 this was missing, in the iplookup router, which I don't think anybody now
1135 uses, but I've fixed it anyway.
1136
9b8fadde
PH
1137PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1138 well as to direct DNS lookups. Otherwise the handling of names in host
1139 lists is inconsistent and therefore confusing.
1140
214e2000 1141
5de37277
PH
1142Exim version 4.60
1143-----------------
1144
cc38ddbf
PH
1145PH/01 Two changes to the default runtime configuration:
1146
1147 (1) Move the checks for relay_from_hosts and authenticated clients from
1148 after to before the (commented out) DNS black list checks.
1149
1150 (2) Add control=submission to the relay_from_hosts and authenticated
1151 clients checks, on the grounds that messages accepted by these
1152 statements are most likely to be submissions.
5de37277 1153
72fdd6ae
PH
1154PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1155
1156 (1) Generate an error if the third argument for the ${prvs expansion is
1157 not a single digit.
1158
1159 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1160 string.
1161
1162 (3) Reset the variables that are obtained from the first argument of
1163 ${prvscheck and used in the second argument before leaving the code,
1164 because their memory is reclaimed, so using them afterwards may do
1165 silly things.
1166
1167 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1168 one (it's much easier than Tom thought :-).
1169
1170 (5) Because of (4), we can now allow for the use of $prvscheck_result
1171 inside the third argument.
cb9328de 1172
cb741023
PH
1173PH/03 For some reason, the default setting of PATH when running a command from
1174 a pipe transport was just "/usr/bin". I have changed it to
1175 "/bin:/usr/bin".
1176
f174f16e
PH
1177PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1178 anything to be listed in the output from -bV.
b2f5a032 1179
c25242d7
PH
1180PH/05 When a filter generated an autoreply, the entire To: header line was
1181 quoted in the delivery log line, like this:
1182
1183 => >A.N.Other <ano@some.domain> <original@ddress> ...
1184
1185 This has been changed so that it extracts the operative address. There
1186 may be more than one such address. If so, they are comma-separated, like
1187 this:
1188
1189 => >ano@some.domain,ona@other.domain <original@ddress> ...
1190
82c19f95
PH
1191PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1192 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1193 not being looked up in the rDNS to get a host name, Exim was showing the
1194 IP address twice in Received: lines, even though the IP addresses were
1195 identical. For example:
1196
1197 Received: from [1.2.3.4] (helo=[1.2.3.4])
1198
1199 However, if the real host name was known, it was omitting the HELO data
1200 if it matched the actual IP address. This has been tidied up so that it
1201 doesn't show the same IP address twice.
1202
d7ffbc12
PH
1203PH/07 When both +timestamp and +memory debugging was on, the value given by
1204 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1205 called by the debug printing, thereby overwriting the timestamp buffer.
1206 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1207
9f526266
PH
1208PH/08 When the original message was included in an autoreply transport, it
1209 always said "this is a copy of the message, including all the headers",
1210 even if body_only or headers_only was set. It now gives an appropriate
1211 message.
1212
87fcc8b9
PH
1213PH/09 Applied a patch from the Sieve maintainer which:
1214
1215 o fixes some comments
1216 o adds the (disabled) notify extension core
1217 o adds some debug output for the result of if/elsif tests
1218 o points to the current vacation draft in the documentation
1219 and documents the missing references header update
1220
1221 and most important:
1222
1223 o fixes a bug in processing the envelope test (when testing
1224 multiple envelope elements, the last element determinted the
1225 result)
1226
456682f5
PH
1227PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1228 Electronic Mail") by including:
1229
1230 Auto-submitted: auto-generated
1231
1232 in the messages that it generates (bounce messages and others, such as
1233 warnings). In the case of bounce messages for non-SMTP mesages, there was
1234 also a typo: it was using "Auto_submitted" (underscore instead of
1235 hyphen). Since every message generated by Exim is necessarily in response
1236 to another message, thes have all been changed to:
1237
1238 Auto-Submitted: auto-replied
1239
1240 in accordance with these statements in the RFC:
1241
1242 The auto-replied keyword:
1243
1244 - SHOULD be used on messages sent in direct response to another
1245 message by an automatic process,
1246
1247 - MUST NOT be used on manually-generated messages,
1248
1249 - MAY be used on Delivery Status Notifications (DSNs) and Message
1250 Disposition Notifications (MDNs),
1251
1252 - MUST NOT be used on messages generated by automatic or periodic
1253 processes, except for messages which are automatic responses to
1254 other messages.
1255
3e46c1aa
PH
1256PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1257 to the default Received: header definition.
456682f5 1258
49826d12
PH
1259PH/12 Added log selector acl_warn_skipped (default on).
1260
eba0c039
PH
1261PH/13 After a successful wildlsearch lookup, discard the values of numeric
1262 variables because (a) they are in the wrong storage pool and (b) even if
1263 they were copied, it wouldn't work properly because of the caching.
1264
a0d6ba8a
PH
1265PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1266 checking when decoding. Apparently there are clients that generate
1267 overlong encoded strings. Why am I not surprised?
1268
f0917727
PH
1269PH/15 If the first argument of "${if match_address" was not empty, but did not
1270 contain an "@" character, Exim crashed. Now it writes a panic log message
1271 and treats the condition as false.
1272
096fee00
PH
1273PH/16 In autoreply, treat an empty string for "once" the same as unset.
1274
024bd3c2
PH
1275PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1276 extension "envelope-auth". The code is finished and in agreement with
1277 other implementations, but there is no documentation so far and in fact,
1278 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1279 not changing the active code.
1280
1281 Print executed "if" and "elsif" statements when debugging is used. This
1282 helps a great deal to understand what a filter does.
1283
1284 Document more things not specified clearly in RFC3028. I had all this
1285 sorted out, when out of a sudden new issues came to my mind. Oops."
1286
df199fec
PH
1287PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1288 (Bugzilla #53).
1289
d27f1df3
PH
1290PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1291 canonical form (as documented). However, after a host name lookup from
1292 the IP address, check_host() was doing a simple string comparison with
1293 addresses acquired from the DNS when checking that the found name did
1294 have the original IP as one of its addresses. Since any found IPv6
1295 addresses are likely to be in abbreviated form, the comparison could
1296 fail. Luckily, there already exists a function for doing the comparison
1297 by converting both addresses to binary, so now that is used instead of
1298 the text comparison.
1299
96776534
PH
1300PH/20 There was another similar case to PH/19, when a complete host name was
1301 given in a host list; looking up its IP address could give an abbreviated
1302 form, whereas the current host's name might or might not be abbreviated.
1303 The same fix has been applied.
1304
5de37277 1305
9a799bc0
PH
1306Exim version 4.54
1307-----------------
1308
1309PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1310 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1311 It now does.
1312
99a4b039
PH
1313PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1314 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1315
1316PH/03 Typo: missing ".o" in src/pcre/Makefile.
1317
4b233853
PH
1318PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1319 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1320 Also, for "Auto-Submitted", treat anything other than "no" as
1321 non-personal, in accordance with RFC 3834. (Previously it treated
1322 anything starting "auto-" as non-personal.)
1323
8857ccfd
PH
1324TF/01 The control=submission/name=... option had a problem with syntax
1325 errors if the name included a slash character. The /name= option
1326 now slurps the rest of the string, so it can include any characters
1327 but it must come last in the list of options (after /sender_retain
1328 or /domain=).
1329
433a2980
PH
1330PH/05 Some modifications to the interface to the fake nameserver for the new
1331 testing suite.
1332
3e46c1aa 1333
9a799bc0 1334
e3a311ba
TK
1335Exim version 4.53
1336-----------------
1337
1338TK/01 Added the "success_on_redirect" address verification option. See
1339 NewStuff for rationale and an example.
1340
13b685f9
PH
1341PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1342
395ff96d
PH
1343PH/02 Patch to exigrep to allow it to work on syslog lines.
1344
5b68f6e4
PH
1345PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1346 fread() to skip over the body file's header line, because in Cygwin the
1347 header line is locked and is inaccessible.
1348
1ab52c69
PH
1349PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1350 co-exist for some time) to make it clear that it is the Exim ID that is
1351 referenced, not the Message-ID: header line.
1352
b07e6aa3
PH
1353PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1354 string_format() function, because snprintf() does not exist on all
1355 operating systems.
1356
254e032f
PH
1357PH/06 The use of forbid_filter_existstest now also locks out the use of the
1358 ${stat: expansion item.
1359
3af76a81
PH
1360PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1361 protocol synchronization error", to keep the pedants happy.
1362
2548ba04
PH
1363PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1364 well as for IRIX systems, when gcc is being used. See the host.c source
1365 file for comments.
1366
b6c6011d
PH
1367PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1368
cf39cf57
PH
1369PH/10 Named domain lists were not working if used in a queue_smtp_domains
1370 setting.
1371
f1513293
PH
1372PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1373 transport and to the smtp transport in LMTP mode.
1374
727549a4
PH
1375TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1376
af46795e
PH
1377PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1378 run a filter in a subprocess. This could lead to confusion in subsequent
1379 lookups in the parent process. There should also be a search_tidyup() at
1380 the end of the subprocess.
1381
d7b47fd0
PH
1382PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1383 only if the host matched helo_try_verify_hosts, which caused the
1384 verification to occur when the EHLO/HELO command was issued. The ACL just
1385 tested the remembered result. Now, if a previous verification attempt has
1386 not happened, "verify = helo" does it there and then.
1387
ee744174
JJ
1388JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1389
b582ab87
PH
1390TK/03 Fix log output including CR from clamd.
1391
41a13e0a
PH
1392PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1393 exist provoked a memory error which could cause a segfault.
1394
f625cc5a
PH
1395PH/15 Installed PCRE 6.2
1396
1397PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1398
21f7af35
PH
1399PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1400 of the problem. Specifically, suggested +O2 rather than +O1 for the
1401 HP-UX compiler.
1402
31480e42
PH
1403PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1404
2d280592
PH
1405PH/20 If a delivery was routed to a non-standard port by means of an SRV
1406 record, the port was not correctly logged when the outgoing_port log
1407 selector was set (it logged the transort's default port).
1408
7cd1141b
PH
1409PH/21 Added support for host-specific ports to manualroute, queryprogram,
1410 fallback_hosts, and "hosts" in the smtp transport.
1411
1412PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1413 host errors such as "Connection refused".
1414
750af86e
PH
1415PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1416 authentication with radiusclient 0.4.9:
1417
1418 - Error returned from rc_read_config was caught wrongly
1419 - Username/password not passed on to radius server due to wrong length.
1420
1421 The presumption is that some radiusclient API changes for 4.51/PH/17
1422 were not taken care of correctly. The code is still untested by me (my
1423 Linux distribution still has 0.3.2 of radiusclient), but it was
1424 contributed by a Radius user.
1425
1426PH/24 When doing a callout, the value of $domain wasn't set correctly when
1427 expanding the "port" option of the smtp transport.
1428
4304270b
TK
1429TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1430 while reading a MIME header. Thanks to Tom Hughes for a patch.
1431
750af86e
PH
1432PH/24 Include config.h inside local_scan.h so that configuration settings are
1433 available.
1434
64ffc24f
PH
1435PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1436 that in an ACL for RCPT (for example), you can examine exactly what was
1437 received.
1438
5dd9625b
PH
1439PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1440 commands, but it was not correctly comparing the address with the actual
1441 client host address. Thus, it would show the EHLO address in Received:
1442 header lines when this was not necessary.
1443
5591031b
PH
1444PH/27 Added the % operator to ${eval:}.
1445
ba18e66a
PH
1446PH/28 Exim tries to create and chdir to its spool directory when it starts;
1447 it should be ignoring failures (because with -C, for example, it has lost
1448 privilege). It wasn't ignoring creation failures other than "already
1449 exists".
1450
9cec981f
PH
1451PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1452 -bV or -d is used.
1453
aa2b5c79
PH
1454PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1455 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1456 too many continuations, the temporary file was not being removed, and the
1457 return code was incorrect.
aa2b5c79 1458
48a53b7f
PH
1459PH/31 Missing "BOOL" in function definition in filtertest.c.
1460
1c59d63b
PH
1461PH/32 Applied Sieve patches from the maintainer.
1462
671012da
TK
1463TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1464
1509d3a8
PH
1465PH/33 Added "verify = not_blind".
1466
1467PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1468 Local/Makefile (with some defaults set). These are used in built scripts
1469 such as exicyclog, but they have never been used in the exim_install
1470 script (though there are many overriding facilities there). I have
1471 arranged that the exim_install script now takes note of these two
1472 settings.
1473
1474PH/35 Installed configuration files for Dragonfly.
1475
2fe1a124
PH
1476PH/36 When a locally submitted message by a trusted user did not contain a
1477 From: header, and the sender address was obtained from -f or from an SMTP
1478 MAIL command, and the trusted user did not use -F to supply a sender
1479 name, $originator_name was incorrectly used when constructing a From:
1480 header. Furthermore, $originator_name was used for submission mode
1481 messages from external hosts without From: headers in a similar way,
1482 which is clearly wrong.
1483
8800895a
PH
1484PH/37 Added control=suppress_local_fixups.
1485
ccfdb010
PH
1486PH/38 When log_selector = +received_sender was set, and the addition of the
1487 sender made the log line's construction buffer exactly full, or one byte
1488 less than full, an overflow happened when the terminating "\n" was
1489 subsequently added.
1490
1130bfb0
PH
1491PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1492 when the result of a list match is failure because a DNS lookup failed.
1493
ebcb507f
PH
1494PH/40 RM_COMMAND is now used in the building process.
1495
c35e155c
PH
1496PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1497 the "build-* directories that it finds.
1498
95d1f782
PH
1499PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1500 address in a domain literal was a prefix of an interface address.
1501
fd6de02e
PH
1502PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1503 when verifying a sender address, unless rewrite_headers is false.
1504
58de37c5
PH
1505PH/44 Wrote a long comment about why errors_to addresses are verified as
1506 recipients, not senders.
1507
261cf466
TF
1508TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1509 the ratelimit ACL was added.
1510
3ee512ff
PH
1511PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1512
e08c430f
PH
1513PH/46 Added extra information about PostgreSQL errors to the error string.
1514
bef5a11f
PH
1515PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1516 avoiding the need to install special zones in a real server. This is
1517 backwards compatible; if it can't find the fake resolver, it drops back.
1518 Thus, both old and new test suites can be run.
1519
7546de58
TF
1520TF/02 Added util/ratelimit.pl
1521
e5d5a95f
TF
1522TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1523 clock is set back in time.
1524
2e88a017
TF
1525TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1526 Candler <B.Candler@pobox.com>.
1527
a5f65aa4
TF
1528TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1529 OK for addresses that are the result of redirections.
1530
e7726cbf
PH
1531PH/48 A number of further additions for the benefit of the new test suite,
1532 including a fake gethostbyname() that interfaces to the fake DNS resolver
1533 (see PH/47 above).
1534
a7fdad5b
TF
1535TF/06 The fix for widen_domains has also been applied to qualify_single and
1536 search_parents which are the other dnslookup options that can cause
1537 header rewrites.
1538
6af56900
PH
1539PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1540 type ("H").
1541
0925ede6
PH
1542PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1543
66afa403
TF
1544TF/07 Exim produced the error message "an SRV record indicated no SMTP
1545 service" if it encountered an MX record with an empty target hostname.
1546 The message is now "an MX or SRV record indicated no SMTP service".
1547
0154e85a
TF
1548TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1549 if the DNS of the sending site is misconfigured. This is quite a
1550 common situation. This change restores the behaviour of treating a
1551 helo verification defer as a failure.
1552
16f12c76
PH
1553PH/51 If self=fail was set on a router, the bounce message did not include the
1554 actual error message.
1555
bbe902f0 1556
e5a9dba6
PH
1557Exim version 4.52
1558-----------------
1559
1560TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1561
22c3b60b
PH
1562PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1563 command itself ended in error, the underlying message about the transport
1564 filter timeout was being overwritten with the pipe command error. Now the
1565 underlying error message should be appended to the second error message.
1566
06a9b4b5
PH
1567TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1568
c1ac6996
PH
1569PH/02 Reduce the amount of output that "make" produces by default. Full output
1570 can still be requested.
1571
9c7a242c
PH
1572PH/03 The warning log line about a condition test deferring for a "warn" verb
1573 was being output only once per connection, rather than after each
1574 occurrence (because it was using the same function as for successful
1575 "warn" verbs). This seems wrong, so I have changed it.
1576
87ba3f5f
PH
1577TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1578 it should not have, which might have caused a crash in the right
1579 circumstances, but probably never did.
1580
1581PH/04 Installed a modified version of Tony Finch's patch to make submission
1582 mode fix the return path as well as the Sender: header line, and to
1583 add a /name= option so that you can make the user's friendly name appear
1584 in the header line.
1585
29aba418
TF
1586TF/03 Added the control = fakedefer ACL modifier.
1587
fe0dab11
TF
1588TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1589 Mark Lowes for thorough testing.
870f6ba8 1590
11d337a4
TK
1591TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1592
1593TK/03 Merged latest SRS patch from Miles Wilton.
1594
415c8f3b
PH
1595PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1596 with the definition in sysexits.h (which is #included earlier).
1597 Fortunately, Exim does not actually use EX_OK. The code used to try to
1598 preserve the sysexits.h value, by assumimg that macro definitions were
1599 scanned for macro replacements. I have been disabused of this notion,
1600 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1601
958541e9
PH
1602PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1603 in the smtp transport. When a block could not be written in a single
1604 write() function, the timeout was being re-applied to each part-write.
1605 This seems wrong - if the receiver was accepting one byte at a time it
1606 would take for ever. The timeout is now adjusted when this happens. It
1607 doesn't have to be particularly precise.
1608
c206415f
TK
1609TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1610 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1611
2a4be8f9
PH
1612PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1613 without a domain if the check to <postmaster@domain> fails.
1614
1cba11c5
SC
1615SC/01 Eximstats: added -xls and the ability to specify output files
1616 (patch written by Frank Heydlauf).
1617
1618SC/02 Eximstats: use FileHandles for outputing results.
1619
1620SC/03 Eximstats: allow any combination of xls, txt, and html output.
1621
1622SC/04 Eximstats: fixed display of large numbers with -nvr option
1623
1624SC/05 Eximstats: fixed merging of reports with empty tables.
1625
1626SC/06 Eximstats: added the -include_original_destination flag
1627
1628SC/07 Eximstats: removed tabs and trailing whitespace.
1629
1005d00e
TK
1630TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1631
1632TK/06 MBOX spool code: Add real "From " MBOX separator line
1633 so the .eml file is really in mbox format (even though
1634 most programs do not really care). Patch from Alex Miller.
1635
1636TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1637 The latter is generated from $received_to and is only set if the
1638 message has one envelope recipient. SA can use these headers,
1639 obviously out-of-the-box. Patch from Alex Miller.
1640
9b4768fa
PH
1641PH/08 The ${def test on a variable was returning false if the variable's
1642 value was "0", contrary to what the specification has always said!
1643 The result should be true unless the variable is empty.
1644
1645PH/09 The syntax error of a character other than { following "${if
1646 def:variable_name" (after optional whitespace) was not being diagnosed.
1647 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1648 accidental colon was present, for example, could give incorrect results.
1649
0d7eb84a
PH
1650PH/10 Tidied the code in a number of places where the st_size field of a stat()
1651 result is used (not including appendfile, where other changes are about
1652 to be made).
1653
1654PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1655 This involved changing a lot of size variables from int to off_t. It
1656 should work with maildirs and everything.
1657
40727bee
TK
1658TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1659 spamd dying while we are connected to it.
1660
554d2369
TF
1661TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1662 <jgh@wizmail.org>
1663
1f922db1
PH
1664PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1665 function for BDB 4.3.
1666
ef213c3b
PH
1667PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1668
8ac170f3
PH
1669PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1670 the sources for PCRE have been re-arranged and more files are now
1671 involved.
1672
b1c749bb
PH
1673PH/15 The code I had for printing potentially long long variables in PH/11
1674 above was not the best (it lost precision). The length of off_t variables
1675 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1676 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1677 to be "long long int" or "long int". This is needed for the internal
1678 formatting function string_vformat().
b1c749bb 1679
4aac9b49
PH
1680PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1681 the configuration file to be ":syslog", then the script "guesses" where
1682 the logs files are, rather than using the compiled in default. In our
1683 case the guess is not the same as the compiled default, so the script
1684 suddenly stopped working when I started to use syslog. The patch checks
1685 to see if log_file_path is "". If so, it attempts to read it from exim
1686 with no configuration file to get the compiled in version, before it
1687 falls back to the previous guessing code."
1688
294520c8
TK
1689TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1690 implementing BATV in an Exim configuration. See NewStuff for the gory
1691 details.
1692
5bd022fe
PH
1693PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1694 Makefile that are specific to HP-UX.
1695
90e9ce59
PH
1696PH/18 If the "use_postmaster" option was set for a recipient callout together
1697 with the "random" option, the postmaster address was used as the MAIL
1698 FROM address for the random test, but not for the subsequent recipient
1699 test. It is now used for both.
1700
5ea81592
PH
1701PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1702 patch removes a few documentation additions to RFC 3028, because the
1703 latest draft now contains them. It adds the new en;ascii-case comparator
1704 and a new error check for 8bit text in MIME parts. Comparator and
1705 require names are now matched exactly. I enabled the subaddress
1706 extension, but it is not well tested yet (read: it works for me)."
1707
c6c2dc1d
PH
1708PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1709 rework some of the code of TK/09 above to avoid the hardwired use of
1710 "%lld" and "long long". Replaced the call to snprintf() with a call to
1711 string_vformat().
1712
fffffe4c
PH
1713PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1714 records point to non-existent hosts", "retry timeout exceeded", and
1715 "retry time not reached for any host after a long failure period".
ca02eafb 1716
9a26b6b2
PH
1717PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1718 experimental DomainKeys support:
1719
1720 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1721 (2) On an error such as an illegally used "control", the wrong name for
1722 the control was given.
1723
1724 These problems did NOT occur unless DomainKeys support was compiled.
1725
4aee0225
PH
1726PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1727
32d668a5
PH
1728PH/24 Added ${if match_ip condition.
1729
8187c3f3
PH
1730PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1731 databases so that it will be absolutely obvious if a crash occurs in the
1732 DB library. This is a regular occurrence (often caused by mis-matched
1733 db.h files).
1734
ff790e47 1735PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1736 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1737 picked up on a user's system that detects such things. There doesn't seem
1738 to be a gcc warning option for this - only an attribute that has to be
1739 put on the function's prototype. It seems that in Fedora Core 4 they have
1740 set this on a number of new functions. No doubt there will be more in due
1741 course.
ff790e47 1742
5417f6d1
PH
1743PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1744 specify a transport. However, if an address that was verified by such a
1745 router was the subject of a callout, Exim crashed because it tried to
1746 read the rcpt_include_affixes from the non-existent transport. Now it
1747 just assumes that the setting of that option is false. This bug was
1748 introduced by 4.51/PH/31.
1749
59cf8544
PH
1750PH/28 Changed -d+all to exclude +memory, because that information is very
1751 rarely of interest, but it makes the output a lot bigger. People tend to
1752 do -d+all out of habit.
1753
e7ad8a65
PH
1754PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1755 code in os-type was giving problems when libc.so lives in lib64, like on
1756 x86_64 Fedora Core.
1757
ade42478
PH
1758PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1759 aren't the modern standard, and it seems that some systems' include files
1760 don't always have them. Exim was already checking for some of the newer
1761 ones like T_AAAA, and defining it itself. I've added checks for all the
1762 record types that Exim uses.
1763
182ad5cf
PH
1764PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1765 not automatically generating a new one, as it is supposed to. This
1766 prevented TLS from working. If the file did exist, but contained invalid
1767 data, a new version was generated, as expected. It was only the case of a
1768 non-existent file that was broken.
1769
b0d9fc80
TK
1770TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1771 with a change in libdomainkeys > 0.64.
1772
1773TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1774 from DNS. If the selector record carries the flag, it now has
1775 precedence over the domain-wide flag.
1776
1777TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1778
47c7a64a
PH
1779PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1780 the use of a port name that isn't defined in /etc/services) occurred, the
1781 message was deferred as in a normal delivery, and thus remained on the
1782 spool, instead of being failed because of the mua_wrapper setting. This
1783 is now fixed, and I tidied up some of the mua_wrapper messages at the
1784 same time.
1785
a388bce4
SC
1786SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1787 the messages in a hash of arrays rather than using individual hashes.
1788 This is a bit cleaner and results in dramatic memory savings, albeit
1789 at a slight CPU cost.
1790
1791SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1792 as requested by Marc Sherman.
1793
1794SC/10 Eximstats: added histograms for user specified patterns as requested
1795 by Marc Sherman.
1796
0793e4ed
SC
1797SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1798
c58b88df
PH
1799PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1800 fopen() in the content-scanning modules that did not already have it.
1801
e7ad8a65 1802
7982096b
PH
1803Exim version 4.51
1804-----------------
1805
1a46a8c5
PH
1806TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1807 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1808
2f079f46 1809TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1810
1811TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1812
1813PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1814 to test Sieve filters that use "vacation".
1815
1816PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1817 that changes the way the GnuTLS parameters are stored in the cache file.
1818 The new format can be generated externally. For backward compatibility,
1819 if the data in the cache doesn't make sense, Exim assumes it has read an
1820 old-format file, and it generates new data and writes a new file. This
1821 means that you can't go back to an older release without removing the
1822 file.
1823
1824PH/03 A redirect router that has both "unseen" and "one_time" set does not
1825 work if there are any delivery delays because "one_time" forces the
1826 parent to be marked "delivered", so its unseen clone is never tried
1827 again. For this reason, Exim now forbids the simultaneous setting of
1828 these two options.
1829
1830PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1831 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1832 entry if you want to know the details. The fix, however, neglected to
1833 consider the case when local delivery batching is involved. The test for
1834 "previously delivered" was not happening when checking to see if an
1835 address could be batched with a previous (undelivered) one; under
1836 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1837 address.
1a46a8c5
PH
1838
1839PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1840 in its include files, and this causes problems building Exim.
1841
1842PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1843 header_syntax) but Exim was just ignoring anything given after a slash.
1844 In particular, this caused confusion with an attempt to use "verify =
1845 reverse_host_lookup/defer_ok". An error is now given when options are
1846 supplied for verify items that do not have them. (Maybe reverse_host_
1847 lookup should have a defer_ok option, but that's a different point.)
1848
1849PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1850 defined by RFC 821) to 2048, because there were problems with some AUTH
1851 commands, and RFC 1869 says the size should be increased for extended
1852 SMTP commands that take arguments.
1853
1854PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1855 Finch).
1856
1857PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1858 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1859
49c2d5ea
PH
1860PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1861 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1862 whatever). Otherwise the password may appear in the log. Following change
1863 PH/42 below, there is no longer a chance of it appearing in a bounce
1864 message.
49c2d5ea 1865
bf759a8b
PH
1866PH/11 Installed exipick version 20050225.0 from John Jetmore.
1867
83364d30
PH
1868PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1869 of its addresses was ever tried. (Bugzilla bug #2.)
1870
7999bbd7
PH
1871PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1872 the result incorrectly in the debug output. (It correctly added a newline
1873 to what was transported.)
1874
7dbf77c9
PH
1875TF/01 Added $received_time.
1876
74e0617f
PH
1877PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1878 commented out examples of how to interface to a virus scanner and to
1879 SpamAssassin. Also added commented examples of av_scanner and
1880 spamd_address settings.
1881
2f079f46
PH
1882PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1883 and controls are allowed in which ACLs. There were a couple of minor
1884 errors. Some of the entries in the conditions table (which is a table of
1885 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1886 negation of where the condition IS allowed.
1887
8c841523
PH
1888PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1889
7766a4f0
PH
1890PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1891 header file does not have a version number, so I've had to invent a new
1892 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1893 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1894 radiusclient), but it was contributed by a Radius user.
1895
8b417f2c
PH
1896PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1897 files or directories, for OpenSSL.
1898
901f42cb
PH
1899PH/19 When an Exim process that is running as root has to create an Exim log
1900 file, it does so in a subprocess that runs as exim:exim so as to get the
1901 ownership right at creation (otherwise, other Exim processes might see
1902 the file with the wrong ownership). There was no test for failure of this
1903 fork() call, which would lead to the process getting stuck as it waited
1904 for a non-existent subprocess. Forks do occasionally fail when resources
1905 run out. I reviewed all the other calls to fork(); they all seem to check
1906 for failure.
1907
f9b9210e
PH
1908PH/20 When checking for unexpected SMTP input at connect time (before writing
1909 the banner), Exim was not dealing correctly with a non-positive return
1910 from the read() function. If the client had disconnected by this time,
1911 the result was a log entry for a synchronization error with an empty
1912 string after "input=" when read() returned zero. If read() returned -1
1913 (an event I could not check), uninitialized data bytes were printed.
1914 There were reports of junk text (parts of files, etc) appearing after
1915 "input=".
1916
54cdb463
PH
1917PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1918
cf00dad6
PH
1919PH/22 Added support for macro redefinition, and (re)definition in between
1920 driver and ACL definitions.
1921
acb1b346
PH
1922PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1923 forgetting to use the resulting value; it was using the unexpanded value.
1924
c5ddb310
PH
1925PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1926 hadn't been configured. The fix is from Juergen Kreileder, who
1927 understands it better than I do:
1928
1929 "Here's what I see happening with three configured cyrus_sasl
1930 authenticators configured (plain, login, cram-md5):
1931
1932 On startup auth_cyrus_sasl_init() gets called for each of these.
1933 This means three calls to sasl_listmech() without a specified mech_list.
1934 => SASL tests which mechs of all available mechs actually work
1935 => three warnings about OTP not working
1936 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1937
1938 With the patch, sasl_listmech() also gets called three times. But now
1939 SASL's mech_list option is set to the server_mech specified in the the
1940 authenticator. Or in other words, the answer from sasl_listmech()
1941 gets limited to just the mech you're testing for (which is different
1942 for each call.)
1943 => the return list contains just 'plain' or 'login', 'cram-md5' or
1944 nothing depending on the value of ob->server_mech.
1945
1946 I've just tested the patch: Authentication still works fine,
1947 unavailable mechs specified in the exim configuration are still
1948 caught, and the auth.log warnings about OTP are gone."
1949
31619da6
PH
1950PH/25 When debugging is enabled, the contents of the command line are added
1951 to the debugging output, even when log_selector=+arguments is not
1952 specified.
1953
bebaf0fc
PH
1954PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1955 answer is "GNU", and only if the return is "GNU/something" is the answer
1956 "Linux".
1957
475fe28a
PH
1958PH/27 $acl_verify_message is now set immediately after the failure of a
1959 verification in an ACL, and so is available in subsequent modifiers. In
1960 particular, the message can be preserved by coding like this:
1961
1962 warn !verify = sender
1963 set acl_m0 = $acl_verify_message
1964
1965 Previously, $acl_verify_message was set only while expanding "message"
1966 and "log_message" when a very denied access.
1967
7e8bec7a
PH
1968PH/28 Modified OS/os.c-Linux with
1969
1970 -#ifndef OS_LOAD_AVERAGE
1971 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1972
1973 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1974 nomenclature these days.)
1975
e4a89c47
PH
1976PH/29 Installed patch from the Sieve maintainer that adds the options
1977 sieve_useraddress and sieve_subaddress to the redirect router.
1978
5ca2a9a1
PH
1979PH/30 In these circumstances:
1980 . Two addresses routed to the same list of hosts;
1981 . First host does not offer TLS;
1982 . First host accepts first address;
1983 . First host gives temporary error to second address;
1984 . Second host offers TLS and a TLS session is established;
1985 . Second host accepts second address.
1986 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1987 and peerdn, if requested) that were in fact used only for the second
1988 address.
7e8bec7a 1989
c688b954
PH
1990PH/31 When doing a callout as part of verifying an address, Exim was not paying
1991 attention to any local part prefix or suffix that was matched by the
1992 router that accepted the address. It now behaves in the same way as it
1993 does for delivery: the affixes are removed from the local part unless
1994 rcpt_include_affixes is set on the transport.
1995
fed77020
PH
1996PH/32 Add the sender address, as F=<...>, to the log line when logging a
1997 timeout during the DATA phase of an incoming message.
1998
7fe1560f
PH
1999PH/33 Sieve envelope tests were broken for match types other than :is. I have
2000 applied a patch sanctioned by the Sieve maintainer.
c688b954 2001
ebb6e6d5
PH
2002PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2003 the uid or gid is negative. A case of a negative gid caused this to be
2004 noticed. The fix allows for either to be negative.
2005
9c4e8f60
PH
2006PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2007 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2008 overlooked.
2009
2010PH/36 The change PH/12 above was broken. Fixed it.
2011
d7174846
PH
2012PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2013 the grounds that routing the same address twice would always produce the
2014 same answer. This might have been true once, but it is certainly no
2015 longer true now. Routing a child address may depend on the previous
2016 routing that produced that child. Some complicated redirection strategies
2017 went wrong when messages had multiple recipients, and made Exim's
2018 behaviour dependent on the order in which the addresses were given.
2019
2020 I have moved the duplicate checking until after the routing is complete.
2021 Exim scans the addresses that are assigned to local and remote
2022 transports, and removes any duplicates. This means that more work will be
2023 done, as duplicates will always all be routed, but duplicates are
2024 presumably rare, so I don't expect this is of any significance.
2025
2026 For deliveries to pipes, files, and autoreplies, the duplicate checking
2027 still happens during the routing process, since they are not going to be
2028 routed further.
2029
cfe75fc3
PH
2030PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2031 It corrects a timeout issue with spamd. This is Ian's comment: "The
2032 background is that sometimes spamd either never reads data from a
2033 connection it has accepted, or it never writes response data. The exiscan
2034 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2035 blindly assumes that writes won't block so it may never time out."
2036
be22d70e
PH
2037PH/39 Allow G after quota size as well as K and M.
2038
0612b098
PH
2039PH/40 The value set for $authenticated_id in an authenticator may not contain
2040 binary zeroes or newlines because the value is written to log lines and
2041 to spool files. There was no check on this. Now the value is run through
2042 the string_printing() function so that such characters are converted to
2043 printable escape sequences.
2044
2e0c1448
PH
2045PH/41 $message_linecount is a new variable that contains the total number of
2046 lines in the message. Compare $body_linecount, which is the count for the
2047 body only.
2048
447d236c
PH
2049PH/42 Exim no longer gives details of delivery errors for specific addresses in
2050 bounce and delay warning messages, except in certain special cases, which
2051 are as follows:
2052
2053 (a) An SMTP error message from a remote host;
2054 (b) A message specified in a :fail: redirection;
2055 (c) A message specified in a "fail" command in a system filter;
2056 (d) A message specified in a FAIL return from the queryprogram router;
2057 (e) A message specified by the cannot_route_message router option.
2058
2059 In these cases only, Exim does include the error details in bounce and
2060 warning messages. There are also a few cases where bland messages such
2061 as "unrouteable address" or "local delivery error" are given.
2062
d20976dc
PH
2063PH/43 $value is now also set for the "else" part of a ${run expansion.
2064
f656d135
PH
2065PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2066 being worked on, but at least Exim now implements the latest version to
2067 play with."
2068
2e2a30b4
PH
2069PH/45 In a pipe transport, although a timeout while waiting for the pipe
2070 process to complete was treated as a delivery failure, a timeout while
2071 writing the message to the pipe was logged, but erroneously treated as a
2072 successful delivery. Such timeouts include transport filter timeouts. For
2073 consistency with the overall process timeout, these timeouts are now
2074 treated as errors, giving rise to delivery failures by default. However,
2075 there is now a new Boolean option for the pipe transport called
2076 timeout_defer, which, if set TRUE, converts the failures into defers for
2077 both kinds of timeout. A transport filter timeout is now identified in
2078 the log output.
2079
9176e9f0
PH
2080PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2081 systems where "make" and "gmake" are different, calling "gmake" at top
2082 level broke things. I've arranged for the value of $(MAKE) to be passed
2083 from the Makefile to this script so that it can call the same version of
2084 "make".
2085
7982096b 2086
bbe902f0
PH
2087A note about Exim versions 4.44 and 4.50
2088----------------------------------------
2089
2090Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2091changes of various kinds. As a consequence, a big documentation update was
2092needed. This delayed the release for rather longer than seemed good, especially
2093in the light of a couple of (minor) security issues. Therefore, the changes
2094that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2095release. So 4.44 and 4.50 are in effect two different branches that both start
2096from 4.43.
2097
2098I have left the 4.50 change log unchanged; it contains all the changes since
20994.43. The change log for 4.44 is below; many of its items are identical to
2100those for 4.50. This seems to be the most sensible way to preserve the
2101historical information.
2102
2103
f7b63901 2104Exim version 4.50
495ae4b0
PH
2105-----------------
2106
5fe762f6
PH
2107 1. Minor wording change to the doc/README.SIEVE file.
2108
139059f6 2109 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2110 computation of the current number of files was incorrect.
495ae4b0 2111
7086e875
PH
2112 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2113 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2114 place.
2115
35af9f61
PH
2116 4. Give more explanation in the error message when the command for a transport
2117 filter fails to execute.
2118
b668c215
PH
2119 5. There are several places where Exim runs a non-Exim command in a
2120 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2121 was being done only for the command run by the queryprogram router. It is
2122 now done for all such subprocesses. The other cases are: ${run, transport
2123 filters, and the commands run by the lmtp and pipe transports.
2124
a494b1e1
PH
2125 6. Added CONFIGURE_GROUP build-time option.
2126
2127 7. Some older OS have a limit of 256 on the maximum number of file
2128 descriptors. Exim was using setrlimit() to set 1000 as a large value
2129 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2130 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2131
c5fcb476
PH
2132 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2133 was an oversight, and furthermore, ever since the addition of extra
2134 controls (e.g. 4.43/32), the checks on when to allow different forms of
2135 "control" were broken. There should now be diagnostics for all cases when a
2136 control that does not make sense is encountered.
2137
69358f02
PH
2138 9. Added the /retain_sender option to "control=submission".
2139
5be20824
PH
214010. $recipients is now available in the predata ACL (oversight).
2141
eb2c0248
PH
214211. Tidy the search cache before the fork to do a delivery from a message
2143 received from the command line. Otherwise the child will trigger a lookup
2144 failure and thereby defer the delivery if it tries to use (for example) a
2145 cached ldap connection that the parent has called unbind on.
2146
2a3eea10
PH
214712. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2148 of $address_data from the recipient verification was clobbered by the
2149 sender verification.
2150
215113. The value of address_data from a sender verification is now available in
2152 $sender_address_data in subsequent conditions in the ACL statement.
2153
23c7ff99
PH
215414. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2155
4deaf07d
PH
215615. Added a new option "connect=<time>" to callout options, to set a different
2157 connection timeout.
2158
926e1192
PH
215916. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2160 was its contents. (It was OK if the option was not defined at all.)
2161
650edc6f
PH
216217. A "Completed" log line is now written for messages that are removed from
2163 the spool by the -Mrm option.
2164
2c7db3f5
PH
216518. New variables $sender_verify_failure and $recipient_verify_failure contain
2166 information about exactly what failed.
2167
3d235903
PH
216819. Added -dd to debug only the daemon process.
2169
7c7ad977
PH
217020. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2171 handles timeouts, both on the server side and network timeouts. Renamed the
2172 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2173
981756db
PH
217421. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2175 It is now set to "smtps".
2176
d4eb88df
PH
217722. $host_address is now set to the target address during the checking of
2178 ignore_target_hosts.
2179
218023. When checking ignore_target_hosts for an ipliteral router, no host name was
2181 being passed; this would have caused $sender_host_name to have been used if
2182 matching the list had actually called for a host name (not very likely,
2183 since this list is usually IP addresses). A host name is now passed as
2184 "[x.x.x.x]".
2185
7d468ab8
PH
218624. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2187 code that specifies a non-restarting handler (typically sigaction() in
2188 modern systems) in an attempt to fix a rare and obscure crash bug.
2189
219025. Narrowed the window for a race in the daemon that could cause it to ignore
2191 SIGCHLD signals. This is not a major problem, because they are used only to
2192 wake it up if nothing else does.
2193
62c0818f
PH
219426. A malformed maildirsize file could cause Exim to calculate negative values
2195 for the mailbox size or file count. Odd effects could occur as a result.
2196 The maildirsize information is now recalculated if the size or filecount
2197 end up negative.
2198
26034054
PH
219927. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2200 support for a long time. Removed HAVE_SYS_VFS_H.
2201
af66f652
PH
220228. Installed the latest version of exipick from John Jetmore.
2203
90af77f4
PH
220429. In an address list, if the pattern was not a regular expression, an empty
2205 subject address (from a bounce message) matched only if the pattern was an
2206 empty string. Non-empty patterns were not even tested. This was the wrong
2207 because it is perfectly reasonable to use an empty address as part of a
2208 database query. An empty address is now tested by patterns that are
2209 lookups. However, all the other forms of pattern expect the subject to
2210 contain a local part and a domain, and therefore, for them, an empty
2211 address still always fails if the pattern is not itself empty.
2212
d8ef3577
PH
221330. Exim went into a mad DNS loop when attempting to do a callout where the
2214 host was specified on an smtp transport, and looking it up yielded more
2215 than one IP address.
2216
5cb8cbc6
PH
221731. Re-factored the code for checking spool and log partition space into a
2218 function that finds that data and another that does the check. The former
2219 is then used to implement four new variables: $spool_space, $log_space,
2220 $spool_inodes, and $log_inodes.
2221
14702f5b
PH
222232. The RFC2047 encoding function was originally intended for short strings
2223 such as real names; it was not keeping to the 75-character limit for
2224 encoded words that the RFC imposes. It now respects the limit, and
2225 generates multiple encoded words if necessary. To be on the safe side, I
2226 have increased the buffer size for the ${rfc2047: expansion operator from
2227 1024 to 2048 bytes.
2228
063b1e99
PH
222933. It is now permitted to omit both strings after an "if" condition; if the
2230 condition is true, the result is "true". As before, when the second string
2231 is omitted, a false condition yields an empty string. This makes it less
2232 cumbersome to write custom ACL and router conditions.
2233
652e1b65
PH
223434. Failure to deliver a bounce message always caused it to be frozen, even if
2235 there was an errors_to setting on the router. The errors_to setting is now
2236 respected.
2237
6f0c9a4f
PH
223835. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2239 canonical form (fully expanded) before being placed in
2240 $sender_host_address.
2241
33397d19
PH
224236. The table in the code that translates DNS record types into text (T_A to
2243 "A" for instance) was missing entries for NS and CNAME. It is just possible
2244 that this could have caused confusion if both these types were looked up
2245 for the same domain, because the text type is used as part of Exim's
2246 per-process caching. But the chance of anyone hitting this buglet seems
2247 very small.
2248
7bb56e1f
PH
224937. The dnsdb lookup has been extended in a number of ways.
2250
2251 (1) There is a new type, "zns", which walks up the domain tree until it
2252 finds some nameserver records. It should be used with care.
2253
ea3bc19b
PH
2254 (2) There is a new type, "mxh", which is like "mx" except that it returns
2255 just the host names, not the priorities.
2256
2257 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2258 looked up. The behaviour when one of the lookups defers can be
2259 controlled by a keyword.
7bb56e1f 2260
ea3bc19b 2261 (4) It is now possible to specify the separator character for use when
7bb56e1f 2262 multiple records are returned.
33397d19 2263
0bcb2a0e
PH
226438. The dnslists ACL condition has been extended: it is now possible to supply
2265 a list of IP addresses and/or domains to be looked up in a particular DNS
2266 domain.
2267
2ac0e484
PH
226839. Added log_selector=+queue_time_overall.
2269
4e1fde53
PH
227040. When running the queue in the test harness, wait just a tad after forking a
2271 delivery process, to get repeatability of debugging output.
2272
de365ded
PH
227341. Include certificate and key file names in error message when GnuTLS fails
2274 to set them up, because the GnuTLS error message doesn't include the name
2275 of the failing file when there is a problem reading it.
2276
f05da2e8
PH
227742. Allow both -bf and -bF in the same test run.
2278
d6453af2
PH
227943. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2280
f7b63901
PH
228144. The "Exiscan patch" is now merged into the mainline Exim source.
2282
228345. Sometimes the final signoff response after QUIT could fail to get
2284 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2285 < 0 before doing a fflush(). This bug looks as though it goes back to the
2286 introduction of TLS in release 3.20, but "sometimes" must have been rare
2287 because the tests only now provoked it.
2288
a444213a
PH
228946. Reset the locale to "C" after calling embedded Perl, in case it was changed
2290 (this can affect the format of dates).
2291
0ec020ea
PH
229247. exim_tidydb, when checking for the continued existence of a message for
2293 which it has found a message-specific retry record, was not finding
2294 messages that were in split spool directories. Consequently, it was
2295 deleting retry records that should have stayed in existence.
2296
b1206957
PH
229748. Steve fixed some bugs in eximstats.
2298
229949. The SPA authentication driver was not abandoning authentication and moving
2300 on to the next authenticator when an expansion was forced to fail,
2301 contradicting the general specification for all authenticators. Instead it
2302 was generating a temporary error. It now behaves as specified.
2303
26dd5a95
PH
230450. The default ordering of permitted cipher suites for GnuTLS was pessimal
2305 (the order specifies the preference for clients). The order is now AES256,
2306 AES128, 3DES, ARCFOUR128.
2307
343b2385
PH
230851. Small patch to Sieve code - explicitly set From: when generating an
2309 autoreply.
2310
1c5466b9
PH
231152. Exim crashed if a remote delivery caused a very long error message to be
2312 recorded - for instance if somebody sent an entire SpamAssassin report back
2313 as a large number of 550 error lines. This bug was coincidentally fixed by
2314 increasing the size of one of Exim's internal buffers (big_buffer) that
2315 happened as part of the Exiscan merge. However, to be on the safe side, I
2316 have made the code more robust (and fixed the comments that describe what
2317 is going on).
2318
55ee9ee3
PH
231953. Now that there can be additional text after "Completed" in log lines (if
2320 the queue_time_overall log selector is set), a one-byte patch to exigrep
2321 was needed to allow it to recognize "Completed" as not the last thing in
2322 the line.
2323
d38f8232
PH
232454. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2325 patch that reportedly fixes this has been added. I am not expert enough to
2326 create a test for it. This is what the patch creator wrote:
2327
2328 "I found a little strange behaviour of ldap code when working with
2329 Windows 2003 AD Domain, where users was placed in more than one
2330 Organization Units. When I tried to give exim partial DN, the exit code
2331 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2332 But simultaneously result of request was absolutely normal ldap result,
2333 so I produce this patch..."
2334
3295e65b
PH
2335 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2336 REFERENCE, so I have modified the code to exclude the patch when that macro
2337 is not defined.
2338
7102e136
PH
233955. Some experimental protocols are using DNS PTR records for new purposes. The
2340 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2341 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2342 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2343 CAN-2005-0021
7102e136 2344
3ca0ba97
PH
234556. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2346
c2bcbe20
PH
234757. Double the size of the debug message buffer (to 2048) so that more of very
2348 long debug lines gets shown.
2349
18ce445d
PH
235058. The exicyclog utility now does better if the number of log files to keep
2351 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2352
1f5b4c3d
PH
235359. Two changes related to the smtp_active_hostname option:
2354
2355 (1) $smtp_active_hostname is now available as a variable.
2356 (2) The default for smtp_banner uses $smtp_active_hostname instead
2357 of $primary_hostname.
2358
b975ba52
PH
235960. The host_aton() function is supposed to be passed a string that is known
2360 to be a valid IP address. However, in the case of IPv6 addresses, it was
2361 not checking this. This is a hostage to fortune. Exim now panics and dies
2362 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2363 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2364 components; fortuitously, this particular loophole had already been fixed
2365 by change 4.50/55 above.
2366
2367 If there are any other similar loopholes, the new check in host_aton()
2368 itself should stop them being exploited. The report I received stated that
2369 data on the command line could provoke the exploit when Exim was running as
2370 exim, but did not say which command line option was involved. All I could
2371 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2372 running as the user.
ea3a6f44 2373 CAN-2005-0021
85b87bc2
PH
2374
237561. There was a buffer overflow vulnerability in the SPA authentication code
2376 (which came originally from the Samba project). I have added a test to the
2377 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2378 CAN-2005-0022
b975ba52 2379
17ffcae7
PH
238062. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2381 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2382
d95f9fdb
PH
238363. The daemon start-up calls getloadavg() while still root for those OS that
2384 need the first call to be done as root, but it missed one case: when
2385 deliver_queue_load_max is set with deliver_drop_privilege. This is
2386 necessary for the benefit of the queue runner, because there is no re-exec
2387 when deliver_drop_privilege is set.
2388
86b8287f
PH
238964. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2390 This has been fixed.
2391
60dc5e56
PH
239265. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2393 was in use, was not putting the data itself into the right store pool;
2394 consequently, it could be overwritten for a subsequent message in the same
2395 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2396 the caching.)
2397
533244af
PH
239866. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2399
a5a28604
PH
240067. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2401 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2402 the function were treating the return as a boolean value, which happened to
2403 work because 0=false and not-0=true, but is not correct code.
2404
7e634d24
PH
240568. The host_aton() function was not handling scoped IPv6 addresses (those
2406 with, for example, "%eth0" on the end) correctly.
2407
3e11c26b
PH
240869. Fixed some compiler warnings in acl.c for the bitmaps specified with
2409 negated items (that is, ~something) in unsigned ints. Some compilers
2410 apparently mutter when there is no cast.
2411
6729cf78
PH
241270. If an address verification called from an ACL failed, and did not produce a
2413 user-specific message (i.e. there was only a "system" message), nothing was
2414 put in $acl_verify_message. In this situation, it now puts the system
2415 message there.
2416
00f00ca5
PH
241771. Change 4.23/11 added synchronization checking at the start of an SMTP
2418 session; change 4.31/43 added the unwanted input to the log line - except
2419 that it did not do this in the start of session case. It now does.
2420
c9bdd01c
PH
242172. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2422 This is wrong and can cause the other end to generate a synchronization
2423 error if it is another Exim or anything else that does the synchronization
2424 check. A QUIT command is no longer sent after a timeout.
2425
d43194df
PH
242673. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2427 during host lookups.
2428
fe5b5d0b
PH
242974. The defer_ok option of callout verification was not working if it was used
2430 when verifying addresses in header lines, that is, for this case:
2431
2432 verify = header_sender/callout=defer_ok
2433
76a2d7ba
PH
243475. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2435 those file descriptors could be used for SMTP connections. If anything
2436 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2437 could be sent to the SMTP client, causing chaos. The daemon now opens
2438 stdin, stdout, and stderr to /dev/null when it puts itself into the
2439 background.
2440
244176. Arrange for output from Perl's "warn" command to be written to Exim's main
2442 log by default. The user can override this with suitable Perl magic.
2443
04f7d5b9
PH
244477. The use of log_message on a "discard" ACL verb, which is supposed to add to
2445 the log message when discard triggers, was not working for the DATA ACL or
2446 for the non-SMTP ACL.
2447
bc60667e
PH
244878. Error message wording change in sieve.c.
2449
bb6e88ff
PH
245079. If smtp_accept_max_per_host was set, the number of connections could be
2451 restricted to fewer than expected, because the daemon was trying to set up
2452 a new connection before checking whether the processes handling previous
2453 connections had finished. The check for completed processes is now done
2454 earlier. On busy systems, this bug wouldn't be noticed because something
2455 else would have woken the daemon, and it would have reaped the completed
2456 process earlier.
2457
1e70f85b
PH
245880. If a message was submitted locally by a user whose login name contained one
2459 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2460 It caused a spool format error. I have fixed the spool reading code. A
2461 related problem was that the "from" clause in the Received: line became
2462 illegal because of the space(s). It is now covered by ${quote_local_part.
2463
246481. Included the latest eximstats from Steve (adds average sizes to HTML Top
2465 tables).
2466
4e01f9d6
PH
246782. Updated OS/Makefile-AIX as per message from Mike Meredith.
2468
1ee1cef2
PH
246983. Patch from Sieve maintainer to fix unterminated string problem in
2470 "vacation" handling.
2471
6e2b4ccc
PH
247284. Some minor changes to the Linux configuration files to help with other
2473 OS variants using glibc.
2474
8e669ac1
PH
247585. One more patch for Sieve to update vacation handling to latest spec.
2476
495ae4b0 2477
bbe902f0
PH
2478----------------------------------------------------
2479See the note above about the 4.44 and 4.50 releases.
2480----------------------------------------------------
2481
2482
2483Exim version 4.44
2484-----------------
2485
2486 1. Change 4.43/35 introduced a bug that caused file counts to be
2487 incorrectly computed when quota_filecount was set in an appendfile
2488 transport
2489
2490 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2491 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2492 place.
2493
2494 3. Give more explanation in the error message when the command for a transport
2495 filter fails to execute.
2496
2497 4. There are several places where Exim runs a non-Exim command in a
2498 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2499 was being done only for the command run by the queryprogram router. It is
2500 now done for all such subprocesses. The other cases are: ${run, transport
2501 filters, and the commands run by the lmtp and pipe transports.
2502
2503 5. Some older OS have a limit of 256 on the maximum number of file
2504 descriptors. Exim was using setrlimit() to set 1000 as a large value
2505 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2506 systems. I've change it so that if it can't get 1000, it tries for 256.
2507
2508 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2509 was an oversight, and furthermore, ever since the addition of extra
2510 controls (e.g. 4.43/32), the checks on when to allow different forms of
2511 "control" were broken. There should now be diagnostics for all cases when a
2512 control that does not make sense is encountered.
2513
2514 7. $recipients is now available in the predata ACL (oversight).
2515
2516 8. Tidy the search cache before the fork to do a delivery from a message
2517 received from the command line. Otherwise the child will trigger a lookup
2518 failure and thereby defer the delivery if it tries to use (for example) a
2519 cached ldap connection that the parent has called unbind on.
2520
2521 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2522 of $address_data from the recipient verification was clobbered by the
2523 sender verification.
2524
252510. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2526 was its contents. (It was OK if the option was not defined at all.)
2527
252811. A "Completed" log line is now written for messages that are removed from
2529 the spool by the -Mrm option.
2530
253112. $host_address is now set to the target address during the checking of
2532 ignore_target_hosts.
2533
253413. When checking ignore_target_hosts for an ipliteral router, no host name was
2535 being passed; this would have caused $sender_host_name to have been used if
2536 matching the list had actually called for a host name (not very likely,
2537 since this list is usually IP addresses). A host name is now passed as
2538 "[x.x.x.x]".
2539
254014. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2541 code that specifies a non-restarting handler (typically sigaction() in
2542 modern systems) in an attempt to fix a rare and obscure crash bug.
2543
254415. Narrowed the window for a race in the daemon that could cause it to ignore
2545 SIGCHLD signals. This is not a major problem, because they are used only to
2546 wake it up if nothing else does.
2547
254816. A malformed maildirsize file could cause Exim to calculate negative values
2549 for the mailbox size or file count. Odd effects could occur as a result.
2550 The maildirsize information is now recalculated if the size or filecount
2551 end up negative.
2552
255317. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2554 support for a long time. Removed HAVE_SYS_VFS_H.
2555
ea3a6f44 255618. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2557
255819. Allow an empty sender to be matched against a lookup in an address list.
2559 Previously the only cases considered were a regular expression, or an
2560 empty pattern.
2561
256220. Exim went into a mad DNS lookup loop when doing a callout where the
2563 host was specified on the transport, if the DNS lookup yielded more than
2564 one IP address.
2565
ea3a6f44
NM
256621. The RFC2047 encoding function was originally intended for short strings
2567 such as real names; it was not keeping to the 75-character limit for
2568 encoded words that the RFC imposes. It now respects the limit, and
2569 generates multiple encoded words if necessary. To be on the safe side, I
2570 have increased the buffer size for the ${rfc2047: expansion operator from
2571 1024 to 2048 bytes.
bbe902f0 2572
ea3a6f44
NM
257322. Failure to deliver a bounce message always caused it to be frozen, even if
2574 there was an errors_to setting on the router. The errors_to setting is now
2575 respected.
bbe902f0
PH
2576
257723. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2578 canonical form (fully expanded) before being placed in
2579 $sender_host_address.
2580
258124. Updated eximstats to version 1.33
2582
ea3a6f44
NM
258325. Include certificate and key file names in error message when GnuTLS fails
2584 to set them up, because the GnuTLS error message doesn't include the name
2585 of the failing file when there is a problem reading it.
bbe902f0
PH
2586
258726. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2588 As per change 25.
bbe902f0 2589
ea3a6f44
NM
259027. Reset the locale to "C" after calling embedded Perl, in case it was changed
2591 (this can affect the format of dates).
bbe902f0 2592
ea3a6f44
NM
259328. exim_tidydb, when checking for the continued existence of a message for
2594 which it has found a message-specific retry record, was not finding
2595 messages that were in split spool directories. Consequently, it was
2596 deleting retry records that should have stayed in existence.
bbe902f0
PH
2597
259829. eximstats updated to version 1.35
2599 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2600 1.35 - bugfix such that pie charts by volume are generated correctly
2601
ea3a6f44
NM
260230. The SPA authentication driver was not abandoning authentication and moving
2603 on to the next authenticator when an expansion was forced to fail,
2604 contradicting the general specification for all authenticators. Instead it
2605 was generating a temporary error. It now behaves as specified.
bbe902f0 2606
ea3a6f44
NM
260731. The default ordering of permitted cipher suites for GnuTLS was pessimal
2608 (the order specifies the preference for clients). The order is now AES256,
2609 AES128, 3DES, ARCFOUR128.
bbe902f0 2610
ea3a6f44
NM
261131. Small patch to Sieve code - explicitly set From: when generating an
2612 autoreply.
bbe902f0 2613
ea3a6f44
NM
261432. Exim crashed if a remote delivery caused a very long error message to be
2615 recorded - for instance if somebody sent an entire SpamAssassin report back
2616 as a large number of 550 error lines. This bug was coincidentally fixed by
2617 increasing the size of one of Exim's internal buffers (big_buffer) that
2618 happened as part of the Exiscan merge. However, to be on the safe side, I
2619 have made the code more robust (and fixed the comments that describe what
2620 is going on).
bbe902f0 2621
ea3a6f44
NM
262233. Some experimental protocols are using DNS PTR records for new purposes. The
2623 keys for these records are domain names, not reversed IP addresses. The
2624 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2625 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2626 CAN-2005-0021
2627
ea3a6f44
NM
262834. The host_aton() function is supposed to be passed a string that is known
2629 to be a valid IP address. However, in the case of IPv6 addresses, it was
2630 not checking this. This is a hostage to fortune. Exim now panics and dies
2631 if the condition is not met. A case was found where this could be provoked
2632 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2633 components; fortuitously, this particular loophole had already been fixed
2634 by change 4.50/55 or 4.44/33 above.
2635
2636 If there are any other similar loopholes, the new check in host_aton()
2637 itself should stop them being exploited. The report I received stated that
2638 data on the command line could provoke the exploit when Exim was running as
2639 exim, but did not say which command line option was involved. All I could
2640 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2641 running as the user.
bbe902f0
PH
2642 CAN-2005-0021
2643
ea3a6f44
NM
264435. There was a buffer overflow vulnerability in the SPA authentication code
2645 (which came originally from the Samba project). I have added a test to the
2646 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2647 CAN-2005-0022
2648
ea3a6f44
NM
264936. The daemon start-up calls getloadavg() while still root for those OS that
2650 need the first call to be done as root, but it missed one case: when
2651 deliver_queue_load_max is set with deliver_drop_privilege. This is
2652 necessary for the benefit of the queue runner, because there is no re-exec
2653 when deliver_drop_privilege is set.
bbe902f0 2654
ea3a6f44
NM
265537. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2656 was in use, was not putting the data itself into the right store pool;
2657 consequently, it could be overwritten for a subsequent message in the same
2658 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2659 the caching.)
bbe902f0 2660
ea3a6f44
NM
266138. Sometimes the final signoff response after QUIT could fail to get
2662 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2663 < 0 before doing a fflush(). This bug looks as though it goes back to the
2664 introduction of TLS in release 3.20, but "sometimes" must have been rare
2665 because the tests only now provoked it.
bbe902f0
PH
2666
2667
495ae4b0
PH
2668Exim version 4.43
2669-----------------
2670
2671 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2672 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2673 Now it returns an integer. A number of calls were still expecting a T/F
2674 return. Fortuitously, in all cases, the tests worked in OK situations,
2675 which is the norm. However, things would have gone wrong on any write
2676 failures on the smtp file descriptor. This function is used when sending
2677 messages over SMTP and also when doing verify callouts.
2678
2679 2. When Exim is called to do synchronous delivery of a locally submitted
2680 message (the -odf or -odi options), it no longer closes stderr before doing
2681 the delivery.
2682
2683 3. Implemented the mua_wrapper option.
2684
2685 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2686
2687 5. Implemented the functions header_remove(), header_testname(),
2688 header_add_at_position(), and receive_remove_recipient(), and exported them
2689 to local_scan().
2690
2691 6. If an ACL "warn" statement specified the addition of headers, Exim already
2692 inserted X-ACL-Warn: at the start if there was no header name. However, it
2693 was not making this test for the second and subsequent header lines if
2694 there were newlines in the string. This meant that an invalid header could
2695 be inserted if Exim was badly configured.
2696
2697 7. Allow an ACL "warn" statement to add header lines at the start or after all
2698 the Received: headers, as well as at the end.
2699
2700 8. Added the rcpt_4xx retry error code.
2701
2702 9. Added postmaster_mailfrom=xxx to callout verification option.
2703
270410. Added mailfrom=xxxx to the callout verification option, for verify=
2705 header_sender only.
2706
270711. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2708 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2709
271012. Inserted some casts to stop certain compilers warning when using pointer
2711 differences as field lengths or precisions in printf-type calls (mostly
2712 affecting debugging statements).
2713
271413. Added optional readline() support for -be (dynamically loaded).
2715
271614. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2717 same clock tick as a message's arrival, so that its received time was the
2718 same as the "first fail" time on the retry record, and that message
2719 remained on the queue past the ultimate address timeout, every queue runner
2720 would try a delivery (because it was past the ultimate address timeout) but
2721 after another failure, the ultimate address timeout, which should have then
2722 bounced the address, did not kick in. This was a "< instead of <=" error;
2723 in most cases the first failure would have been in the next clock tick
2724 after the received time, and all would be well.
2725
272615. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2727 being recognized when the domain list was tested by the match_domain
2728 condition in an expansion string.
2729
273016. Added the ${str2b64: operator.
2731
273217. Exim was always calling setrlimit() to set a large limit for the number of
2733 processes, without checking whether the existing limit was already
2734 adequate. (It did check for the limit on file descriptors.) Furthermore,
2735 errors from getrlimit() and setrlimit() were being ignored. Now they are
2736 logged to the main and panic logs, but Exim does carry on, to try to do its
2737 job under whatever limits there are.
2738
273918. Imported PCRE 5.0.
2740
274119. Trivial typo in log message " temporarily refused connection" (the leading
2742 space).
2743
274420. If the log selector return_path_on_delivery was set and an address was
2745 redirected to /dev/null, the delivery process crashed because it assumed
2746 that a return path would always be set for a "successful" delivery. In this
2747 case, the whole delivery is bypassed as an optimization, and therefore no
2748 return path is set.
2749
275021. Internal re-arrangement: the function for sending a challenge and reading
2751 a response while authentication was assuming a zero-terminated challenge
2752 string. It's now changed to take a pointer and a length, to allow for
2753 binary data in such strings.
2754
275522. Added the cyrus_sasl authenticator (code supplied by MBM).
2756
275723. Exim was not respecting finduser_retries when seeking the login of the
2758 uid under which it was called; it was always trying 10 times. (The default
2759 setting of finduser_retries is zero.) Also, it was sleeping after the final
2760 failure, which is pointless.
2761
276224. Implemented tls_on_connect_ports.
2763
276425. Implemented acl_smtp_predata.
2765
276626. If the domain in control=submission is set empty, Exim assumes that the
2767 authenticated id is a complete email address when it generates From: or
2768 Sender: header lines.
2769
277027. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2771 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2772 chown and chgrp in /bin and hostname in /usr/bin.
2773
277428. Exim was keeping the "process log" file open after each use, just as it
2775 does for the main log. This opens the possibility of it remaining open for
2776 long periods when the USR1 signal hits a daemon. Occasional processlog
2777 errors were reported, that could have been caused by this. Anyway, it seems
2778 much more sensible not to leave this file open at all, so that is what now
2779 happens.
2780
278129. The long-running daemon process does not normally write to the log once it
2782 has entered its main loop, and it closes the log before doing so. This is
2783 so that log files can straightforwardly be renamed and moved. However,
2784 there are a couple of unusual error situations where the daemon does write
2785 log entries, and I had neglected to close the log afterwards.
2786
278730. The text of an SMTP error response that was received during a remote
2788 delivery was being truncated at 512 bytes. This is too short for some of
2789 the long messages that one sometimes sees. I've increased the limit to
2790 1024.
2791
279231. It is now possible to make retry rules that apply only when a message has a
2793 specific sender, in particular, an empty sender.
2794
279532. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2796 it possible to be selective about when SMTP synchronization is enforced.
2797
279833. Added "control = caseful_local_part" and "control = "caselower_local_part".
2799
280032. Implemented hosts_connection_nolog.
2801
280233. Added an ACL for QUIT.
2803
280434. Setting "delay_warning=" to disable warnings was not working; it gave a
2805 syntax error.
2806
280735. Added mailbox_size and mailbox_filecount to appendfile.
2808
280936. Added control = no_multiline_responses to ACLs.
2810
281137. There was a bug in the logic of the code that waits for the clock to tick
2812 in the case where the clock went backwards by a substantial amount such
2813 that the microsecond fraction of "now" was more than the microsecond
2814 fraction of "then" (but the whole seconds number was less).
2815
281638. Added support for the libradius Radius client library this is found on
2817 FreeBSD (previously only the radiusclient library was supported).
2818
2819
2820Exim version 4.42
2821-----------------
2822
2823 1. When certain lookups returned multiple values in the form name=value, the
2824 quoting of the values was not always being done properly. Specifically:
2825 (a) If the value started with a double quote, but contained no whitespace,
2826 it was not quoted.
2827 (b) If the value contained whitespace other than a space character (i.e.
2828 tabs or newlines or carriage returns) it was not quoted.
2829 This fix has been applied to the mysql and pgsql lookups by writing a
2830 separate quoting function and calling it from the lookup code. The fix
2831 should probably also be applied to nisplus, ibase and oracle lookups, but
2832 since I cannot test any of those, I have not disturbed their existing code.
2833
2834 2. A hit in the callout cache for a specific address caused a log line with no
2835 reason for rejecting RCPT. Now it says "Previous (cached) callout
2836 verification failure".
2837
2838 3. There was an off-by-one bug in the queryprogram router. An over-long
2839 return line was truncated at 256 instead of 255 characters, thereby
2840 overflowing its buffer with the terminating zero. As well as fixing this, I
2841 have increased the buffer size to 1024 (and made a note to document this).
2842
2843 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2844 when Exim is waiting for an SMTP response from a remote server, Exim
2845 restarts its select() call on the socket, thereby resetting its timeout.
2846 This is not a problem when such interrupts are rare. Somebody set up a cron
2847 job to run exiwhat every 2 minutes, which is less than the normal select()
2848 timeout (5 or 10 minutes). This meant that the select() timeout never
2849 kicked in because it was always reset. I have fixed this by comparing the
2850 time when an interrupt arrives with the time at the start of the first call
2851 to select(). If more time than the timeout has elapsed, the interrupt is
2852 treated as a timeout.
2853
2854 5. Some internal re-factoring in preparation for the addition of Sieve
2855 extensions (by MH). In particular, the "personal" test is moved to a
2856 separate function, and given an option for scanning Cc: and Bcc: (which is
2857 not set for Exim filters).
2858
2859 6. When Exim created an email address using the login of the caller as the
2860 local part (e.g. when creating a From: or Sender: header line), it was not
2861 quoting the local part when it contained special characters such as @.
2862
2863 7. Installed new OpenBSD configuration files.
2864
2865 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2866 try to make them clearer.
2867
2868 9. Callout options, other than the timeout value, were being ignored when
2869 verifying sender addresses in header lines. For example, when using
2870
2871 verify = header_sender/callout=no_cache
2872
2873 the cache was (incorrectly) being used.
2874
287510. Added a missing instance of ${EXE} to the exim_install script; this affects
2876 only the Cygwin environment.
2877
287811. When return_path_on_delivery was set as a log selector, if different remote
2879 addresses in the same message used different return paths and parallel
2880 remote delivery occurred, the wrong values would sometimes be logged.
2881 (Whenever a remote delivery process finished, the return path value from
2882 the most recently started remote delivery process was logged.)
2883
288412. RFC 3848 specifies standard names for the "with" phrase in Received: header
2885 lines when AUTH and/or TLS are in use. This is the "received protocol"
2886 field. Exim used to use "asmtp" for authenticated SMTP, without any
2887 indication (in the protocol name) for TLS use. Now it follows the RFC and
2888 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2889 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2890 names appear in log lines as well as in Received: header lines.
2891
289213. Installed MH's patches for Sieve to add the "copy" and "vacation"
2893 extensions, and comparison tests, and to fix some bugs.
2894
289514. Changes to the "personal" filter test:
2896
2897 (1) The test was buggy in that it was just doing the equivalent of
2898 "contains" tests on header lines. For example, if a user's address was
2899 anne@some.where, the "personal" test would incorrectly be true for
2900
2901 To: susanne@some.where
2902
2903 This test is now done by extracting each address from the header in turn,
2904 and checking the entire address. Other tests that are part of "personal"
2905 are now done using regular expressions (for example, to check local parts
2906 of addresses in From: header lines).
2907
2908 (2) The list of non-personal local parts in From: addresses has been
2909 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2910 taken from the Sieve specification recommendations.
2911
2912 (3) If the message contains any header line starting with "List-" it is
2913 treated as non-personal.
2914
2915 (4) The test for "circular" in the Subject: header line has been removed
2916 because it now seems ill-conceived.
2917
291815. Minor typos in src/EDITME comments corrected.
2919
292016. Installed latest exipick from John Jetmore.
2921
292217. If headers_add on a router specified a text string that was too long for
2923 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2924 of string_sprintf() is now avoided.
2925
292618. $message_body_size was not set (it was always zero) when running the DATA
2927 ACL and the local_scan() function.
2928
292919. For the "mail" command in an Exim filter, no default was being set for
2930 the once_repeat time, causing a random time value to be used if "once" was
2931 specified. (If the value happened to be <= 0, no repeat happened.) The
2932 default is now 0s, meaning "never repeat". The "vacation" command was OK
2933 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2934 (I found it when inspecting the code).
2935
293620. There is now an overall timeout for performing a callout verification. It
2937 defaults to 4 times the callout timeout, which applies to individual SMTP
2938 commands during the callout. The overall timeout applies when there is more
2939 than one host that can be tried. The timeout is checked before trying the
2940 next host. This prevents very long delays if there are a large number of
2941 hosts and all are timing out (e.g. when the network connections are timing
2942 out). The value of the overall timeout can be changed by specifying an
2943 additional sub-option for "callout", called "maxwait". For example:
2944
2945 verify = sender/callout=5s,maxwait=20s
2946
294721. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2948 to the end before writing, but this should make it even safer).
2949
295022. Exim was forgetting that it had advertised PIPELINING for the second and
2951 subsequent messages on an SMTP connection. It was also not resetting its
2952 memory on STARTTLS and an internal HELO.
2953
295423. When Exim logs an SMTP synchronization error within a session, it now
2955 records whether PIPELINING has been advertised or not.
2956
295724. Added 3 instances of "(long int)" casts to time_t variables that were being
2958 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2959 rather than long int.
2960
296125. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2962
296326. Added the never_mail option to autoreply.
2964
2965
2966Exim version 4.41
2967-----------------
2968
2969 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2970 crash if the getsockname() call failed; this can happen if a connection is
2971 closed very soon after it is established. The problem was simply in the
2972 order in which certain operations were done, causing Exim to try to write
2973 to the SMTP stream before it had set up the file descriptor. The bug has
2974 been fixed by making things happen in the correct order.
2975
2976
2977Exim version 4.40
2978-----------------
2979
2980 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2981 before the connection was closed, thus losing the rejection response.
2982
2983 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2984 some early Solaris releases, but causes trouble in current releases where
2985 socklen_t is defined.
2986
2987 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2988 always exist.
2989
2990 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2991 configured.
2992
2993 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2994 that releasing the top of it at the end releases what was used for sub-
2995 expansions (unless the block got too big). However, discard this block if
2996 the first thing is a variable or header, so that we can use its block when
2997 it is dynamic (useful for very large $message_headers, for example).
2998
2999 6. Lookups now cache *every* query, not just the most recent. A new, separate
3000 store pool is used for this. It can be recovered when all lookup caches are
3001 flushed. Lookups now release memory at the end of their result strings.
3002 This has involved some general refactoring of the lookup sources.
3003
3004 7. Some code has been added to the store_xxx() functions to reduce the amount
3005 of flapping under certain conditions.
3006
3007 8. log_incoming_interface used to affect only the <= reception log lines. Now
3008 it causes the local interface and port to be added to several more SMTP log
3009 lines, for example "SMTP connection from", and rejection lines.
3010
3011 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3012
301310. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3014
301511. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3016 could be overwritten at the end of the current message (or the start of a
3017 new message if it was set in a HELO ACL). The value is now preserved for
3018 the duration of the SMTP connection.
3019
302012. If a transport had a headers_rewrite setting, and a matching header line
3021 contained an unqualified address, that address was qualified, even if it
3022 did not match any rewriting rules. The underlying bug was that the values
3023 of the flags that permit the existence of unqualified sender and recipient
3024 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3025 non-local messages, and by -bnq for local messages) were not being
3026 preserved with the message after it was received.
3027
302813. When Exim was logging an SMTP synchronization error, it could sometimes log
3029 "next input=" as part of the text comprising the host identity instead of
3030 the correct text. The code was using the same buffer for two different
3031 strings. However, depending on which order the printing function evaluated
3032 its arguments, the bug did not always show up. Under Linux, for example, my
3033 test suite worked just fine.
3034
303514. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3036 doesn't work with some older versions of Perl. It has been changed to "my",
3037 which in any case is probably the better facility to use.
3038
303915. A really picky compiler found some instances of statements for creating
3040 error messages that either had too many or two few arguments for the format
3041 string.
3042
304316. The size of the buffer for calls to the DNS resolver has been increased
3044 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3045 for addresses that have a lot of PTR records. This alleviates a problem; it
3046 does not fully solve it.
3047
304817. A dnsdb lookup for PTR records that receives more data than will fit in the
3049 buffer now truncates the list and logs the incident, which is the same
3050 action as happens when Exim is looking up a host name and its aliases.
3051 Previously in this situation something unpredictable would happen;
3052 sometimes it was "internal error: store_reset failed".
3053
305418. If a server dropped the connection unexpectedly when an Exim client was
3055 using GnuTLS and trying to read a response, the client delivery process
3056 crashed while trying to generate an error log message.
3057
305819. If a "warn" verb in an ACL added multiple headers to a message in a single
3059 string, for example:
3060
3061 warn message = H1: something\nH2: something
3062
3063 the text was added as a single header line from Exim's point of view
3064 though it ended up OK in the delivered message. However, searching for the
3065 second and subsequent header lines using $h_h2: did not work. This has been
3066 fixed. Similarly, if a system filter added multiple headers in this way,
3067 the routers could not see them.
3068
306920. Expanded the error message when iplsearch is called with an invalid key to
3070 suggest using net-iplsearch in a host list.
3071
307221. When running tests using -bh, any delays imposed by "delay" modifiers in
3073 ACLs are no longer actually imposed (and a message to that effect is
3074 output).
3075
307622. If a "gecos" field in a passwd entry contained escaped characters, in
3077 particular, if it contained a \" sequence, Exim got it wrong when building
3078 a From: or a Sender: header from that name. A second bug also caused
3079 incorrect handling when an unquoted " was present following a character
3080 that needed quoting.
3081
308223. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3083 was not being matched caselessly.
3084
308524. Arranged for all hyphens in the exim.8 source to be escaped with
3086 backslashes.
3087
308825. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3089 properly. Recipient callout cache records were still being keyed to include
3090 the sender, even when use_sender was set false. This led to far more
3091 callouts that were necessary. The sender is no longer included in the key
3092 when use_sender is false.
3093
309426. Added "control = submission" modifier to ACLs.
3095
309627. Added the ${base62d: operator to decode base 62 numbers.
3097
309828. dnsdb lookups can now access SRV records.
3099
310029. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3101 the configuration file.
3102
310330. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3104 (-v) mode. This makes the output for a verbose queue run more intelligible.
3105
310631. Added a use_postmaster feature to recipient callouts.
3107
310832. Added the $body_zerocount variable, containing the number of binary zero
3109 bytes in the message body.
3110
311133. The time of last modification of the "new" subdirectory is now used as the
3112 "mailbox time last read" when there is a quota error for a maildir
3113 delivery.
3114
311534. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3116
311735. Added +ignore_unknown as a special item in host lists.
3118
311936. Code for decoding IPv6 addresses in host lists is now included, even if
3120 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3121 address was recognized as an IP address, but was then not correctly decoded
3122 into binary, causing unexpected and incorrect effects when compared with
3123 another IP address.
3124
3125
3126Exim version 4.34
3127-----------------
3128
3129 1. Very minor rewording of debugging text in manualroute to say "list of
3130 hosts" instead of "hostlist".
3131
3132 2. If verify=header_syntax was set, and a header line with an unqualified
3133 address (no domain) and a large number of spaces between the end of the
3134 name and the colon was received, the reception process suffered a buffer
3135 overflow, and (when I tested it) crashed. This was caused by some obsolete
3136 code that should have been removed. The fix is to remove it!
3137
3138 3. When running in the test harness, delay a bit after writing a bounce
3139 message to get a bit more predictability in the log output.
3140
3141 4. Added a call to search_tidyup() just before forking a reception process. In
3142 theory, someone could use a lookup in the expansion of smtp_accept_max_
3143 per_host which, without the tidyup, could leave open a database connection.
3144
3145 5. Added the variables $recipient_data and $sender_data which get set from a
3146 lookup success in an ACL "recipients" or "senders" condition, or a router
3147 "senders" option, similar to $domain_data and $local_part_data.
3148
3149 6. Moved the writing of debug_print from before to after the "senders" test
3150 for routers.
3151
3152 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3153 problems for message scanning, either using a data ACL, or using
3154 local_scan() because the Received: header was not generated till after they
3155 were called (in order to set the time as the time of reception completion).
3156 I have revised the way this works. The header is now generated after the
3157 body is received, but before the ACL or local_scan() are called. After they
3158 are run, the timestamp in the header is updated.
3159
3160
3161Exim version 4.33
3162-----------------
3163
3164 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3165 before starting a queue runner without re-exec. This happened only when
3166 deliver_drop_privilege was set or when the Exim user was set to root. The
3167 effect of the bug was that timeouts during subsequent deliveries caused
3168 crashes instead of being properly handled. The handler is now left at its
3169 default (and expected) setting.
3170
3171 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3172 message, again when deliver_drop_privilege is set or Exim is run as root.
3173 The bug described in (1) was not present in this case, but the tidying up
3174 of the other signals was missing. I have made the two cases consistent.
3175
3176 3. The ignore_target_hosts setting on a manualroute router was being ignored
3177 for hosts that were looked up using the /MX notation.
3178
3179 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3180 in domain lists.
3181
3182 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3183 operated on the sender address. After changing the $sender_address to <>
3184 for the sender address verify, Exim was re-instated it as the original
3185 (before rewriting) address, but remembering that it had rewritten it, so it
3186 wasn't rewriting it again. This bug also had the effect of breaking the
3187 sender address verification caching when the sender address was rewritten.
3188
3189 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3190 This has been changed so that if the ip literal address matches
3191 ignore_target_hosts, the router declines.
3192
3193 7. Added expansion conditions match_domain, match_address, and match_local_
3194 part (NOT match_host).
3195
3196 8. The placeholder for the Received: header didn't have a length field set.
3197
3198 9. Added code to Exim itself and to exim_lock to test for a specific race
3199 condition that could lead to file corruption when using MBX delivery. The
3200 issue is with the lockfile that is created in /tmp. If this file is removed
3201 after a process has opened it but before that process has acquired a lock,
3202 there is the potential for a second process to recreate the file and also
3203 acquire a lock. This could lead to two Exim processes writing to the file
3204 at the same time. The added code performs the same test as UW imapd; it
3205 checks after acquiring the lock that its file descriptor still refers to
3206 the same named file.
3207
320810. The buffer for building added header lines was of fixed size, 8192 bytes.
3209 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3210 when Exim is built.
3211
321211. Added the smtp_active_hostname option. If used, this will typically be made
3213 to depend on the incoming interface address. Because $interface_address is
3214 not set up until the daemon has forked a reception process, error responses
3215 that can happen earlier (such as "too many connections") no longer contain
3216 a host name.
3217
321812. If an expansion in a condition on a "warn" statement fails because a lookup
3219 defers, the "warn" statement is abandoned, and the next ACL statement is
3220 processed. Previously this caused the whole ACL to be aborted.
3221
322213. Added the iplsearch lookup type.
3223
322414. Added ident_timeout as a log selector.
3225
322615. Added tls_certificate_verified as a log selector.
3227
322816. Added a global option tls_require_ciphers (compare the smtp transport
3229 option of the same name). This controls incoming TLS connections.
3230
323117. I finally figured out how to make tls_require_ciphers do a similar thing
3232 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3233 before starting the TLS session.
3234
323518. Tabs are now shown as \t in -bP output.
3236
323719. If the log selector return_path_on_delivery was set, Exim crashed when
3238 bouncing a message because it had too many Received: header lines.
3239
324020. If two routers both had headers_remove settings, and the first one included
3241 a superfluous trailing colon, the final name in the first list and the
3242 first name in the second list were incorrectly joined into one item (with a
3243 colon in the middle).
3244
3245
3246Exim version 4.32
3247-----------------
3248
3249 1. Added -C and -D options to the exinext utility, mainly to make it easier
3250 to include in the automated testing, but these could be helpful when
3251 multiple configurations are in use.
3252
3253 2. The exinext utility was not formatting the output nicely when there was
3254 an alternate port involved in the retry record key, nor when there was a
3255 message id as well (for retries that were specific to a specific message
3256 and a specific host). It was also confused by IPv6 addresses, because of
3257 the additional colons they contain. I have fixed the IPv4 problem, and
3258 patched it up to do a reasonable job for IPv6.
3259
3260 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3261 delivery, the log line now contains "pipelined" if PIPELINING was used.
3262
3263 4. An SMTP transport process used to panic and die if the bind() call to set
3264 an explicit outgoing interface failed. This has been changed; it is now
3265 treated in the same way as a connect() failure.
3266
3267 5. A reference to $sender_host_name in the part of a conditional expansion
3268 that was being skipped was still causing a DNS lookup. This no longer
3269 occurs.
3270
3271 6. The def: expansion condition was not recognizing references to header lines
3272 that used bh_ and bheader_.
3273
3274 7. Added the _cache feature to named lists.
3275
3276 8. The code for checking quota_filecount in the appendfile transport was
3277 allowing one more file than it should have been.
3278
3279 9. For compatibility with Sendmail, the command line option
3280
3281 -prval:sval
3282
3283 is equivalent to
3284
3285 -oMr rval -oMs sval
3286
3287 and sets the incoming protocol and host name (for trusted callers). The
3288 host name and its colon can be omitted when only the protocol is to be set.
3289 Note the Exim already has two private options, -pd and -ps, that refer to
3290 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3291 "s", but I don't think that's a major issue.
3292
329310. A number of refactoring changes to the code, none of which should affect
3294 Exim's behaviour:
3295
3296 (a) The number of logging options was getting close to filling up the
3297 32-bit word that was used as a bit map. I have split them into two classes:
3298 those that are passed in the argument to log_write(), and those that are
3299 only ever tested independently outside of that function. These are now in
3300 separate 32-bit words, so there is plenty of room for expansion again.
3301 There is no change in the user interface or the logging behaviour.
3302
3303 (b) When building, for example, log lines, the code previously used a
3304 macro that called string_cat() twice, in order to add two strings. This is
3305 not really sufficiently general. Furthermore, there was one instance where
3306 it was actually wrong because one of the argument was used twice, and in
3307 one call a function was used. (As it happened, calling the function twice
3308 did not affect the overall behaviour.) The macro has been replaced by a
3309 function that can join an arbitrary number of extra strings onto a growing
3310 string.
3311
3312 (c) The code for expansion conditions now uses a table and a binary chop
3313 instead of a serial search (which was left over from when there were very
3314 few conditions). Also, it now recognizes conditions like "pam" even when
3315 the relevant support is not compiled in: a suitably worded error message is
3316 given if an attempt is made to use such a condition.
3317
331811. Added ${time_interval:xxxxx}.
3319
332012. A bug was causing one of the ddress fields not to be passed back correctly
3321 from remote delivery subprocesses. The field in question was not being
3322 subsequently used, so this caused to problems in practice.
3323
332413. Added new log selectors queue_time and deliver_time.
3325
332614. Might have fixed a bug in maildirsizefile handling that threw up
3327 "unexpected character" debug warnings, and recalculated the data
3328 unnecessarily. In any case, I expanded the warning message to give more
3329 information.
3330
333115. Added the message "Restricted characters in address" to the statements in
3332 the default ACL that block characters like @ and % in local parts.
3333
333416. Change 71 for release 4.31 proved to be much less benign that I imagined.
3335 Three changes have been made:
3336
3337 (a) There was a serious bug; a negative response to MAIL caused the whole
3338 recipient domain to be cached as invalid, thereby blocking all messages
3339 to all local parts at the same domain, from all senders. This bug has
3340 been fixed. The domain is no longer cached after a negative response to
3341 MAIL if the sender used is not empty.
3342
3343 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3344 been restored.
3345
3346 (c) A new callout option, "use_sender" has been added for people who want
3347 the modified behaviour.
3348
3349
3350Exim version 4.31
3351-----------------
3352
3353 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3354 Larry Rosenman.
3355
3356 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3357 indeed breaks things for older releases.
3358
3359 3. Added additional logging to the case where there is a problem reading data
3360 from a filter that is running in a subprocess using a pipe, in order to
3361 try to track down a specific problem.
3362
3363 4. Testing facility fudge: when running in the test harness and attempting
3364 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3365 getting "No route to host". Convert this to a timeout.
3366
3367 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3368 warning.
3369
3370 6. Some OS don't have socklen_t but use size_t instead. This affects the
3371 fifth argument of getsockopt() amongst other things. This is now
3372 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3373 can be set for individual OS. I have set it for SunOS5, OSF1, and
3374 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3375 some earlier ones do not.
3376
3377 7. Change 4.30/15 was not doing the test caselessly.
3378
3379 8. The standard form for an IPv6 address literal was being rejected by address
3380 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3381 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3382 this, as well as the form without the "IPv6" on the front (but only when
3383 address literals are enabled, of course).
3384
3385 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3386
338710. Exim crashed if a message with an empty sender address specified by -f
3388 encountered a router with an errors_to setting. This could be provoked only
3389 by a command such as
3390
3391 exim -f "" ...
3392
3393 where an empty string was supplied; "<>" did not hit this bug.
3394
339511. Installed PCRE release 4.5.
3396
339712. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3398 remained set. It is now erased.
3399
340013. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3401 times from message ids (which are base 36 rather than the normal 62).
3402
340314. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3404 were being counted as actual protocol errors, and logged if the log
3405 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3406 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3407 and DATA following a set of rejected RCPTs do not count as protocol errors.
3408 In other words, Exim assumes they were pipelined, though this may not
3409 actually be the case. Of course, in all cases the client gets an
3410 appropriate error code.
3411
341215. If a lookup fails in an ACL condition, a message about the failure may
3413 be available; it is used if testing the ACL cannot continue, because most
3414 such messages specify what the cause of the deferral is. However, some
3415 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3416 that caused an old message to be retained and used if a later statement
3417 caused a defer, replacing the real cause of the deferral.
3418
341916. If an IP address had so many PTR records that the DNS lookup buffer
3420 was not large enough to hold them, Exim could crash while trying to process
3421 the truncated data. It now detects and logs this case.
3422
342317. Further to 4.21/58, another change has been made: if (and only if) the
3424 first line of a message (the first header line) ends with CRLF, a bare LF
3425 in a subsequent header line has a space inserted after it, so as not to
3426 terminate the header.
3427
342818. Refactoring: tidied an ugly bit of code in appendfile that copied data
3429 unnecessarily, used atoi() instead of strtol(), and didn't check the
3430 termination when getting file sizes from file names by regex.
3431
343219. Completely re-implemented the support for maildirsize files, in the light
3433 of a number of problems with the previous contributed implementation
3434 (4.30/29). In particular:
3435
3436 . If the quota is zero, the maildirsize file is maintained, but no quota is
3437 imposed.
3438
3439 . If the maildir directory does not exist, it is created before any attempt
3440 to write a maildirsize file.
3441
3442 . The quota value in the file is just a cache; if the quota is changed in
3443 the transport, the new value overrides.
3444
3445 . A regular expression is available for excluding directories from the
3446 count.
3447
344820. The autoreply transport checks the characters in options that define the
3449 message's headers; it allows continued headers, but it was checking with
3450 isspace() after an embedded newline instead of explicitly looking for a
3451 space or a tab.
3452
345321. If all the "regular" hosts to which an address was routed had passed their
3454 expiry times, and had not reached their retry times, the address was
3455 bounced, even if fallback hosts were defined. Now Exim should go on to try
3456 the fallback hosts.
3457
345822. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3459 equivalent code in the SMTP transport. Some hosts send humungous responses
3460 to HELO/EHLO, more than 1024 it seems.
3461
346223. Refactoring: code in filter.c used (void *) for "any old type" but this
3463 gives compiler warnings in some environments. I've now done it "properly",
3464 using a union.
3465
346624. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3467 (because of problems with the built-in one) was declared to return uschar *
3468 instead of char *, causing compiler failure.
3469
347025. Fixed a file descriptor leak when processing alias/forward files.
3471
347226. Fixed a minor format string issue in dbfn.c.
3473
347427. Typo in exim.c: ("dmbnz" for "dbmnz").
3475
347628. If a filter file refered to $h_xxx or $message_headers, and the headers
3477 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3478 become corrupted.
3479
348029. When a sender address is verified, it is cached, to save repeating the test
3481 when there is more than one recipient in a message. However, when the
3482 verification involves a callout, it is possible for different callout
3483 options to be set for different recipients. It is too complicated to keep
3484 track of this in the cache, so now Exim always runs a verification when a
3485 callout is required, relying on the callout cache for the optimization.
3486 The overhead is duplication of the address routing, but this should not be
3487 too great.
3488
348930. Fixed a bug in callout caching. If a RCPT command caused the sender address
3490 to be verified with callout=postmaster, and the main callout worked but the
3491 postmaster check failed, the verification correctly failed. However, if a
3492 subsequent RCPT command asked for sender verification *without* the
3493 postmaster check, incorrect caching caused this verification also to fail,
3494 incorrectly.
3495
349631. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3497 it was not caching the DNS options (qualify_single, search_parents) that
3498 were used when the lookup failed. A subsequent lookup with different
3499 options therefore always gave the same answer, though there were cases
3500 where it should not have. (Example: a "domains = !$mx_any" option on a
3501 dnslookup router: the "domains" option is always processed without any
3502 widening, but the router might have qualify_single set.) Now Exim uses the
3503 cached value only when the same options are set.
3504
350532. Added John Jetmore's "exipick" utility to the distribution.
3506
350733. GnuTLS: When an attempt to start a TLS session fails for any reason other
3508 than a timeout (e.g. a certificate is required, and is not provided), an
3509 Exim server now closes the connection immediately. Previously it waited for
3510 the client to close - but if the client is SSL, it seems that they each
3511 wait for each other, leading to a delay before one of them times out.
3512
351334: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3514 maintained 0.8.x compatibility because I don't think many are using it, and
3515 it is clearly obsolete.
3516
351735. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3518 transport.
3519
352036. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3521 client certificate was expired. A simple patch fixes this, though I don't
3522 understand the full logic of why the verify callback is called multiple
3523 times.
3524
352537. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3526 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3527 which causes problems with some clients (such as the Certicom SSL Plus
3528 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3529 disables the coutermeasure allowing Eudora to connect."
3530
353138. Exim was not checking that a write() to a log file succeeded. This could
3532 lead to Bad Things if a log got too big, in particular if it hit a file
3533 size limit. Exim now panics and dies if it cannot write to a log file, just
3534 as it does if it cannot open a log file.
3535
353639. Modified OS/Makefile-Linux so that it now contains
3537
3538 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3539
3540 The two -D definitions ensure that Exim is compiled with large file
3541 support, which makes it possible to handle log files that are bigger than
3542 2^31.
3543
354440. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3545 instance) a domain was checked against a named list that involved a lookup,
3546 causing $domain_data to be set, then another domain was checked against the
3547 same list, then the first domain was re-checked, the value of $domain_data
3548 after the final check could be wrong. In particular, if the second check
3549 failed, it could be set empty. This bug probably also applied to
3550 $localpart_data.
3551
355241. The strip_trailing_dot option was not being applied to the address given
3553 with the -f command-line option.
3554
355542. The code for reading a message's header from the spool was incrementing
3556 $received_count, but never initializing it. This meant that the value was
3557 incorrect (doubled) while delivering a message in the same process in which
3558 it was received. In the most common configuration of Exim, this never
3559 happens - a fresh exec is done - but it can happen when
3560 deliver_drop_privilege is set.
3561
356243. When Exim logs an SMTP synchronization error - client data sent too soon -
3563 it now includes up to 150 characters of the unexpected data in the log
3564 line.
3565
356644. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3567 and building data strings. The size of both of these buffers was 10 000
3568 bytes - far larger than anybody would *ever* want, thought I. Needless to
3569 say, somebody hit the limit. I have increased the maximum line length to
3570 20 000 and the maximum data length of concatenated lines to 100 000. I have
3571 also fixed two bugs, because there was no checking on these buffers. Tsk,
3572 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3573 buffer is too small.
3574
357545. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3576 lsearch lookups. Now it does.
3577
357846. When parsing a route_list item in a manualroute router, a fixed-length
3579 buffer was used for the list of hosts. I made this 1024 bytes long,