Updated documentation for 4.67.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
3298c6c6 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.500 2007/04/11 15:06:05 steve 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
8005d38e
SC
195SC/02 Eximstats - Differentiate between permanent and temporary rejects.
196 Eximstats - Fixed some broken HTML links and added missing column headers
197 (Jez Hancock).
198 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
199 columns for Rejects, Temp Rejects, Ham, and Spam rows.
200
3298c6c6
SC
201SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
202
b4ed4da0 203
5dd1517f
PH
204Exim version 4.66
205-----------------
206
207PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
208 fixed by 4.65/MH/01 (is this a record?) are fixed:
209
210 (i) An empty string was always treated as zero by the numeric comparison
211 operators. This behaviour has been restored.
212
213 (ii) It is documented that the numeric comparison operators always treat
214 their arguments as decimal numbers. This was broken in that numbers
215 starting with 0 were being interpreted as octal.
216
217 While fixing these problems I realized that there was another issue that
218 hadn't been noticed. Values of message_size_limit (both the global option
219 and the transport option) were treated as octal if they started with 0.
220 The documentation was vague. These values are now always treated as
221 decimal, and I will make that clear in the documentation.
222
223
93cfa765
TK
224Exim version 4.65
225-----------------
226
227TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
228 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
229 versions. (#438)
230
d6066548
MH
231MH/01 Don't check that the operands of numeric comparison operators are
232 integers when their expansion is in "skipping" mode (fixes bug
233 introduced by 4.64-PH/07).
234
4362ff0d
PH
235PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
236 child addresses, Exim now panics and dies. Previously, because the count
237 is held in a short int, deliveries were likely to be lost. As such a
238 large number of recipients for a single message is ridiculous
239 (performance will be very, very poor), I have chosen to impose a limit
240 rather than extend the field.
241
93cfa765 242
944e9e9c
TF
243Exim version 4.64
244-----------------
aa41d2de 245
21d74bd9
TK
246TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
247 leftover -K file (the existence of which was triggered by #402).
248 While we were at it, introduced process PID as part of the -K
249 filename. This should rule out race conditions when creating
250 these files.
251
252TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
253 processing considerably. Previous code took too long for large mails,
254 triggering a timeout which in turn triggers #401.
255
256TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
257 in the DK code in transports.c. sendfile() is not really portable,
258 hence the _LINUX specificness.
944e9e9c
TF
259
260TF/01 In the add_headers option to the mail command in an Exim filter,
261 there was a bug that Exim would claim a syntax error in any
262 header after the first one which had an odd number of characters
263 in the field name.
264
2b1c6e3a
PH
265PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
266 callout verification, Exim cached a "reject" for the entire domain. This
267 is correct for most verifications, but it is not correct for a recipient
268 verification with use_sender or use_postmaster set, because in that case
269 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
270 case of MAIL FROM:<> rejection from other early rejections (e.g.
271 rejection of HELO). When verifying a recipient using a non-null MAIL
272 address, the cache is ignored if it shows MAIL FROM:<> rejection.
273 Whatever the result of the callout, the value of the domain cache is
274 left unchanged (for any other kind of callout, getting as far as trying
275 RCPT means that the domain itself is ok).
276
1f872c80
PH
277PH/02 Tidied a number of unused variable and signed/unsigned warnings that
278 gcc 4.1.1 threw up.
279
280PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
281 manifest itself as EPIPE rather than ECONNECT. When tidying away a
282 session, the daemon ignores ECONNECT errors and logs others; it now
283 ignores EPIPE as well.
284
d203e649
PH
285PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
286 (quoted-printable decoding).
287
cc2ed8f7 288PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 289 later the small subsequent patch to fix an introduced bug.
f951fd57 290
ddfcd446
PH
291PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
292
d45b1de8
PH
293PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
294
295PH/08 An error is now given if message_size_limit is specified negative.
296
38a0a95f 297PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 298 to be given (somewhat) arbitrary names.
38a0a95f 299
a2405d83
JJ
300JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
301 in 4.64-PH/09.
302
303JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
304 miscellaneous code fixes
305
6ea85e9a
PH
306PH/10 Added the log_reject_target ACL modifier to specify where to log
307 rejections.
308
26da7e20
PH
309PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
310 hostname. This is wrong, because it relates to the incoming message (and
311 probably the interface on which it is arriving) and not to the outgoing
312 callout (which could be using a different interface). This has been
313 changed to use the value of the helo_data option from the smtp transport
314 instead - this is what is used when a message is actually being sent. If
315 there is no remote transport (possible with a router that sets up host
316 addresses), $smtp_active_hostname is used.
6ea85e9a 317
14aa5a05 318PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 319 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
320 (a) The code assumed that strncpy() returns a negative number on buffer
321 overflow, which isn't the case. Replaced with Exim's string_format()
322 function.
323 (b) There were several signed/unsigned issues. I just did the minimum
324 hacking in of casts. There is scope for a larger refactoring.
325 (c) The code used strcasecmp() which is not a standard C function.
326 Replaced with Exim's strcmpic() function.
327 (d) The code set only $1; it now sets $auth1 as well.
328 (e) A simple test gave the error "authentication client didn't specify
329 service in request". It would seem that Dovecot has changed its
330 interface. Fortunately there's a specification; I followed it and
331 changed what the client sends and it appears to be working now.
332
ff75a1f7
PH
333PH/13 Added $message_headers_raw to provide the headers without RFC 2047
334 decoding.
335
e6f6568e
PH
336PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
337 address A is aliased to B and C, where B exists and C does not. Without
338 -v the output is "A verified" because verification stops after a
339 successful redirection if more than one address is generated. However,
340 with -v the child addresses are also verified. Exim was outputting "A
341 failed to verify" and then showing the successful verification for C,
342 with its parentage. It now outputs "B failed to verify", showing B's
343 parentage before showing the successful verification of C.
344
d6f6e0dc
PH
345PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
346 look up a TXT record in a specific list after matching in a combined
347 list.
348
322050c2
PH
349PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
350 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
351 they consult the DNS. I had assumed they would set it the way they
352 wanted; and indeed my experiments on Linux seem to show that in some
353 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
354 To be on the safe side, however, I have now made the interface to
355 host_find_byname() similar to host_find_bydns(), with an argument
356 containing the DNS resolver options. The host_find_byname() function now
357 sets these options at its start, just as host_find_bydns() does. The smtp
358 transport options dns_qualify_single and dns_search_parents are passed to
359 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
360 of host_find_byname() use the default settings of RES_DEFNAMES
361 (qualify_single) but not RES_DNSRCH (search_parents).
362
08955dd3
PH
363PH/17 Applied (a modified version of) Nico Erfurth's patch to make
364 spool_read_header() do less string testing, by means of a preliminary
365 switch on the second character of optional "-foo" lines. (This is
366 overdue, caused by the large number of possibilities that now exist.
367 Originally there were few.) While I was there, I also converted the
368 str(n)cmp tests so they don't re-test the leading "-" and the first
369 character, in the hope this might squeeze out yet more improvement.
370
1eccaa59
PH
371PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
372 flag allowing group syntax was set by the header_syntax check but not
373 turned off, possible causing trouble later; (2) The flag was not being
374 set at all for the header_verify test, causing "group"-style headers to
375 be rejected. I have now set it in this case, and also caused header_
376 verify to ignore an empty address taken from a group. While doing this, I
377 came across some other cases where the code for allowing group syntax
378 while scanning a header line wasn't quite right (mostly, not resetting
379 the flag correctly in the right place). These bugs could have caused
380 trouble for malformed header lines. I hope it is now all correct.
381
602e59e5
PH
382PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
383 with the "reply" argument non-NULL. The code, however (which originally
384 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
385 but it didn't always do it. This confused somebody who was copying the
386 code for some other use. I have removed all the tests.
387
411ef850
PH
388PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
389 feature that was used to support insecure browsers during the U.S. crypto
390 embargo. It requires special client support, and Exim is probably the
391 only MTA that supported it -- and would never use it because real RSA is
392 always available. This code has been removed, because it had the bad
393 effect of slowing Exim down by computing (never used) parameters for the
394 RSA_EXPORT functionality.
395
7befa435
PH
396PH/21 On the advice of Timo Sirainen, added a check to the dovecot
397 authenticator to fail if there's a tab character in the incoming data
398 (there should never be unless someone is messing about, as it's supposed
399 to be base64-encoded). Also added, on Timo's advice, the "secured" option
400 if the connection is using TLS or if the remote IP is the same as the
401 local IP, and the "valid-client-cert option" if a client certificate has
402 been verified.
403
48da4259 404PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
405 authenticators. This can be used for authorization after authentication
406 succeeds. (In the case of plaintext, it servers for both authentication
407 and authorization.)
408
48da4259
PH
409PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
410 if any retry times were supplied.
411
d1d5595c
PH
412PH/24 Exim crashed if verify=helo was activated during an incoming -bs
413 connection, where there is no client IP address to check. In this
414 situation, the verify now always succeeds.
415
0ef732d9
PH
416PH/25 Applied John Jetmore's -Mset patch.
417
328895cc
PH
418PH/26 Added -bem to be like -Mset, but loading a message from a file.
419
fd700877
PH
420PH/27 In a string expansion for a processed (not raw) header when multiple
421 headers of the same name were present, leading whitespace was being
422 removed from all of them, but trailing whitespace was being removed only
423 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
424 before concatenation. Completely empty headers in a concatenation (as
425 before) are ignored.
fd700877 426
8dce1a6f
PH
427PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
428 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
429
17af4a17
PH
430PH/29 [Removed. This was a change that I later backed out, and forgot to
431 correct the ChangeLog entry (that I had efficiently created) before
432 committing the later change.]
f6c332bd
PH
433
434PH/30 Exim was sometimes attempting to deliver messages that had suffered
435 address errors (4xx response to RCPT) over the same connection as other
436 messages routed to the same hosts. Such deliveries are always "forced",
437 so retry times are not inspected. This resulted in far too many retries
438 for the affected addresses. The effect occurred only when there were more
439 hosts than the hosts_max_try setting in the smtp transport when it had
440 the 4xx errors. Those hosts that it had tried were not added to the list
441 of hosts for which the message was waiting, so if all were tried, there
442 was no problem. Two fixes have been applied:
443
444 (i) If there are any address or message errors in an SMTP delivery, none
445 of the hosts (tried or untried) are now added to the list of hosts
446 for which the message is waiting, so the message should not be a
447 candidate for sending over the same connection that was used for a
448 successful delivery of some other message. This seems entirely
449 reasonable: after all the message is NOT "waiting for some host".
450 This is so "obvious" that I'm not sure why it wasn't done
451 previously. Hope I haven't missed anything, but it can't do any
452 harm, as the worst effect is to miss an optimization.
453
454 (ii) If, despite (i), such a delivery is accidentally attempted, the
455 routing retry time is respected, so at least it doesn't keep
456 hammering the server.
457
c1114884
PH
458PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
459 in ${readsocket because some servers need this prod.
460
7a0743eb
PH
461PH/32 Added some extra debug output when updating a wait-xxx database.
462
0d85fa3f
PH
463PH/33 The hint "could be header name not terminated by colon", which has been
464 given for certain expansion errors for a long time, was not being given
465 for the ${if def:h_colon_omitted{... case.
466
1bf43b78
PH
467PH/34 The spec says: "With one important exception, whenever a domain list is
468 being scanned, $domain contains the subject domain." There was at least
469 one case where this was not true.
470
520de300
PH
471PH/35 The error "getsockname() failed: connection reset by peer" was being
472 written to the panic log as well as the main log, but it isn't really
473 panic-worthy as it just means the connection died rather early on. I have
474 removed the panic log writing for the ECONNRESET error when getsockname()
475 fails.
476
48c7f9e2
PH
477PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
478 runs only) independently of the message's sender address. This meant
479 that, if the 4xx error was in fact related to the sender, a different
480 message to the same recipient with a different sender could confuse
481 things. In particualar, this can happen when sending to a greylisting
482 server, but other circumstances could also provoke similar problems.
483 I have changed the default so that the retry time for these errors is now
484 based a combination of the sender and recipient addresses. This change
485 can be overridden by setting address_retry_include_sender=false in the
486 smtp transport.
487
99ea1c86
PH
488PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
489 remote server are returned as part of bounce messages. This was not
490 happening for LMTP over a pipe (the lmtp transport), but now it is the
491 same for both kinds of LMTP.
492
a2042e78
PH
493PH/38 Despite being documented as not happening, Exim was rewriting addresses
494 in header lines that were in fact CNAMEs. This is no longer the case.
495
4fbcfc2e
PH
496PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
497 and queue runs started by the daemon processed all messages. This has
498 been fixed so that -R and -S can now usefully be given with -q<time>.
499
aa41d2de
PH
500PH/40 Import PCRE release 6.7 (fixes some bugs).
501
af561417
PH
502PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
503
3cc66b45
PH
504PH/42 Give an error if -q is specified more than once.
505
194cc0e4
PH
506PH/43 Renamed the variables $interface_address and $interface_port as
507 $received_ip_address and $received_port, to make it clear that these
508 values apply to message reception, and not to the outgoing interface when
509 a message is delivered. (The old names remain recognized, of course.)
510
a401ddaa
PH
511PH/44 There was no timeout on the connect() call when using a Unix domain
512 socket in the ${readsocket expansion. There now is.
513
4e88a19f
PH
514PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
515 be meaningful with "accept".
516
d7d7b289
SC
517SC/01 Eximstats V1.43
518 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
519
520SC/02 Eximstats V1.44
521 Use a glob alias rather than an array ref in the generated
522 parser. This improves both readability and performance.
523
524SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
525 Collect SpamAssassin and rejection statistics.
526 Don't display local sender or destination tables unless
527 there is data to show.
528 Added average volumes into the top table text output.
529
530SC/04 Eximstats V1.46
531 Collect data on the number of addresses (recipients)
532 as well as the number of messages.
533
534SC/05 Eximstats V1.47
535 Added 'Message too big' to the list of mail rejection
536 reasons (thanks to Marco Gaiarin).
537
538SC/06 Eximstats V1.48
539 Mainlog lines which have GMT offsets and are too short to
540 have a flag are now skipped.
541
542SC/07 Eximstats V1.49 (Alain Williams)
543 Added the -emptyok flag.
544
545SC/08 Eximstats V1.50
546 Fixes for obtaining the IP address from reject messages.
547
0ea2a468
JJ
548JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
549 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
550 whitesspace changes from 4.64-PH/27
551
552JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
553 match 4.64-PH/13
554
555JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
556 are found, allow negative numbers in numeric criteria)
557
558JJ/06 exipick.20061117.2, added new $message_body_missing variable
559
560JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
561 to match changes made in 4.64-PH/43
562
8a10f5a4
PH
563PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
564
30e18802
PH
565PH/47 Put in an explicit test for a DNS lookup of an address record where the
566 "domain" is actually an IP address, and force a failure. This locks out
567 those revolvers/nameservers that support "A-for-A" lookups, in
568 contravention of the specifications.
569
55728a4f
PH
570PH/48 When a host name was looked up from an IP address, and the subsequent
571 forward lookup of the name timed out, the host name was left in
572 $sender_host_name, contrary to the specification.
d7d7b289 573
d7837193
PH
574PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
575 restricted to single-key lookups, Exim was not diagnosing an error if
576 * or *@ was used with a query-style lookup.
577
87054a31
PH
578PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
579
ea2c01d2
MH
580MH/01 local_scan ABI version incremented to 1.1. It should have been updated
581 long ago, but noone interested enough thought of it. Let's just say that
582 the "1.1" means that there are some new functions that weren't there at
583 some point in the past.
584
e4fa6968
PH
585PH/51 Error processing for expansion failure of helo_data from an smtp
586 transport during callout processing was broken.
587
56f5d9bd
PH
588PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
589 tested/used via the -bh/-bhc/-bs options.
590
922e1c28
PH
591PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
592 bug, fixed in subsequent PCRE releases).
593
21eb6e72
PH
594PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
595 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
596
a0540757
PH
597PH/55 Check for a ridiculously long file name in exim_dbmbuild.
598
944e9e9c 599
478be7b0
SC
600Exim version 4.63
601-----------------
602
603SC/01 Use a glob alias rather than an array ref in eximstats generated
604 parser. This improves both readability and performance.
605
606SC/02 Collect SpamAssassin and rejection statistics in eximstats.
607 Don't display local sender or destination tables in eximstats unless
608 there is data to show.
609 Added average volumes into the eximstats top table text output.
610
611SC/03 Collect data on the number of addresses (recipients) as well
612 as the number of messages in eximstats.
613
2b965a65
TF
614TF/01 Correct an error in the documentation for the redirect router. Exim
615 does (usually) call initgroups() when daemonizing.
478be7b0 616
45b91596
PH
617TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
618 with consistent privilege compared to when running as a daemon.
478be7b0 619
c59f5781
TF
620TF/03 Note in the spec that $authenticated_id is not set for local
621 submissions from trusted users.
622
90fc3069
TF
623TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
624 Thanks to Dean Brooks <dean@iglou.com> for the patch.
625
6083aca0
TF
626TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
627 by adding some example configuration directives to the default
628 configuration file. A little bit of work is required to uncomment the
629 directives and define how usernames and passwords are checked, but
630 there is now a framework to start from.
631
765b530f
PH
632PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
633 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
634 without this. I don't know how relevant this is to other LDAP libraries.
635
4e167a8c
PH
636PH/02 Add the verb name to the "unknown ACL verb" error.
637
4608d683
PH
638PH/03 Magnus Holmgren's patch for filter_prepend_home.
639
b8dc3e4a
PH
640PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
641
5418e93b
PH
642PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
643 directory not expanded when it should be if an expanded home directory
644 was set for the address (which is overridden by the transport).
645
b4a9bda2
PH
646PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
647 libradius.
648
45b91596
PH
649PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
650 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
651 because it is too late at that time, and has no effect.
652
5547e2c5
PH
653PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
654 security issue with \' (bugzilla #107). I could not use the
655 PQescapeStringConn() function, because it needs a PGconn value as one of
656 its arguments.
657
dbcef0ea
PH
658PH/08 When testing addresses using -bt, indicate those final addresses that
659 are duplicates that would not cause an additional delivery. At least one
660 person was confused, thinking that -bt output corresponded to deliveries.
661 (Suppressing duplicates isn't a good idea as you lose the information
662 about possibly different redirections that led to the duplicates.)
663
25257489
PH
664PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
665 systems where poll() doesn't work, in particular OS X.
666
c816d124
PH
667PH/10 Added more information to debugging output for retry time not reached.
668
a9ccd69a
PH
669PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
670 operations in malware.c.
671
75fa1910
PH
672PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
673 signatures.
674
a7d7aa58
PH
675PH/13 If write_rejectlog was set false when logging was sent to syslog with
676 syslog_duplication set false, log lines that would normally be written
677 both the the main log and to the reject log were not written to syslog at
678 all.
679
42119b09
PH
680PH/14 In the default configuration, change the use of "message" in ACL warn
681 statements to "add_header".
682
41609df5
PH
683PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
684 not followed by a command (e.g. "seen endif").
685
a5bd321b
PH
686PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
687 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
688 latter.
689
e85a7ad5 690PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
691 so that it is now:
692
e85a7ad5
PH
693 ${if or { \
694 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
695 { match{$h_precedence:}{(?i)bulk|list|junk} } \
696 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
697 }{no}{yes}}
698
e85a7ad5
PH
699 The Auto-Submitted: and various List- headers are standardised, whereas I
700 don't think Precedence: ever was.
5dff5817 701
d8fe1c03
PH
702PH/18 Refactored debugging code in route_finduser() to show more information,
703 in particular, the error code if getpwnam() issues one.
704
16282d2b
PH
705PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
706 This is apparently needed in addition to the PH/07 change above to avoid
707 any possible encoding problems.
708
35d40a98
PH
709PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
710 but not after initializing Perl.
711
034d99ab
PH
712PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
713 output them only if debugging. By default they are written stderr,
714 apparently, which is not desirable.
715
6ec97b1b
PH
716PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
717 queries.
718
e22ca4ac
JJ
719JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
720 --not options
721
722JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
723
33d73e3b
PH
724PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
725 authenticated or an ident call has been made. Suppress the default
726 values for $authenticated_id and $authenticated_sender (but permit -oMai
727 and -oMas) when testing with -bh.
728
9ecb03f3
PH
729PH/24 Re-jigged the order of the tests in the default configuration so that the
730 tests for valid domains and recipients precede the DNS black list and CSA
731 tests, on the grounds that those ones are more expensive.
732
084efe8d
PH
733PH/25 Exim was not testing for a space following SMTP commands such as EHLO
734 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
735 This bug exists in every version of Exim that I still have, right back to
736 0.12.
737
366fc9f0
PH
738PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
739 However, an attempt to turn on case-sensitivity in a regex key by
740 including (?-i) didn't work because the subject string was already
741 lowercased, and the effects were non-intuitive. It turns out that a
742 one-line patch can be used to allow (?-i) to work as expected.
743
c59f5781 744
c887c79e
TF
745Exim version 4.62
746-----------------
747
748TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
749 other effects) broke the use of negated acl sub-conditions.
750
1cce3af8
PH
751PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
752 patch).
753
afb3eaaf
PH
754PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
755 "Deny" causes Exim to reject the incoming connection with a 554 error.
756 Unfortunately, if there is a major crisis, such as a disk failure,
757 tcp-wrappers gives "deny", whereas what one would like would be some
758 kind of temporary error. A kludge has been added to help with this.
759 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
760 554 error is used if errno is still zero or contains ENOENT (which occurs
761 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
762 451 error is used.
763
e173618b
PH
764PH/03 Add -lutil to the default FreeBSD LIBS setting.
765
dd16e114
PH
766PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
767 errors. Otherwise a message that provokes a temporary error (when other
768 messages do not) can cause a whole host to time out.
769
f7fd3850
PH
770PH/05 Batch deliveries by appendfile and pipe transports did not work when the
771 addresses were routed directly to files or pipes from a redirect router.
772 File deliveries just didn't batch; pipe deliveries might have suffered
773 odd errors.
774
d87df92c
PH
775PH/06 A failure to get a lock for a hints database would erroneously always say
776 "Failed to get write lock", even when it was really a read lock.
777
7e9f683d
PH
778PH/07 The appendfile transport was creating MBX lock files with a fixed mode
779 of 0600. This has been changed to use the value of the lockfile_mode
780 option (which defaults to 0600).
781
bfad5236
PH
782PH/08 Applied small patch from the Sieve maintainer.
783
01c490df
PH
784PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
785 folder from quota calculations, a direct delivery into this folder messed
786 up the contents of the maildirsize file. This was because the regex was
787 used only to exclude .Trash (or whatever) when the size of the mailbox
788 was calculated. There was no check that a delivery was happening into an
789 excluded directory. This bug has been fixed by ignoring all quota
790 processing for deliveries into excluded directories.
791
d6629cdc
PH
792PH/10 Added the maildirfolder_create_regex option to appendfile.
793
1cce3af8 794
214e2000
PH
795Exim version 4.61
796-----------------
797
798PH/01 The code for finding all the local interface addresses on a FreeBSD
799 system running IPv6 was broken. This may well have applied to all BSD
800 systems, as well as to others that have similar system calls. The broken
801 code found IPv4 interfaces correctly, but gave incorrect values for the
802 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
803 that it would not match correctly against @[] and not recognize the IPv6
804 addresses as local.
805
f9daeae0
PH
806PH/02 The ipliteral router was not recognizing addresses of the form user@
807 [ipv6:....] because it didn't know about the "ipv6:" prefix.
808
7e66e54d
PH
809PH/03 Added disable_ipv6.
810
c8ea1597
PH
811PH/04 Changed $reply_address to use the raw form of the headers instead of the
812 decoded form, because it is most often used to construct To: headers
813 lines in autoreplies, and the decoded form may well be syntactically
814 invalid. However, $reply_address has leading white space removed, and all
815 newlines turned into spaces so that the autoreply transport does not
816 grumble.
817
911f6fde
PH
818PH/05 If group was specified without a user on a router, and no group or user
819 was specified on a transport, the group from the router was ignored.
820
47ca6d6c
PH
821PH/06 Increased the number of ACL variables to 20 of each type, and arranged
822 for visible compile-time settings that can be used to change these
823 numbers, for those that want even more. Backwards compatibility with old
824 spool files has been maintained. However, going back to a previous Exim
825 release will lost any variables that are in spool files.
826
ed0e9820
PH
827PH/07 Two small changes when running in the test harness: increase delay when
828 passing a TCP/IP connection to a new process, in case the original
829 process has to generate a bounce, and remove special handling of
830 127.0.0.2 (sic), which is no longer necessary.
831
eff37e47
PH
832PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
833 be the same on different OS.
834
1921d2ea
PH
835PH/09 Moved a debug statement in filter processing to avoid a race problem when
836 testing.
837
b3f69ca8
JJ
838JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
839 whether --show-vars was specified or not
840
841JJ/02 exipick: Added support for new ACL variable spool format introduced
842 in 4.61-PH/06
843
424a1c63
PH
844PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
845 syntactically invalid From: or Reply-to: line, and a filter used this to
846 generate an autoreply, and therefore failed to obtain an address for the
847 autoreply, Exim could try to deliver to a non-existent relative file
848 name, causing unrelated and misleading errors. What now happens is that
849 it logs this as a hard delivery error, but does not attempt to create a
850 bounce message.
851
7a100415
PH
852PH/11 The exinext utility has a -C option for testing purposes, but although
853 the given file was scanned by exinext itself; it wasn't being passed on
854 when Exim was called.
855
19b9dc85
PH
856PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
857 an end-of-file indication when reading a command response.
858
309bd837
PH
859PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
860 compiled. In many other places in Exim, IPv6 addresses are always
861 recognized, so I have changed this. It also means that IPv4 domain
862 literals of the form [IPV4:n.n.n.n] are now always recognized.
863
59e82a2a
PH
864PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
865 used if the router is not running as root, for example, when verifying at
866 ACL time, or when using -bh. The debugging output from this situation was
867 non-existent - all you got was a failure to exec. I have made two
868 changes:
869
870 (a) Failures to set uid/gid, the current directory, or a process leader
871 in a subprocess such as that created by queryprogram now generate
872 suitable debugging ouput when -d is set.
873
874 (b) The queryprogram router detects when it is not running as root,
875 outputs suitable debugging information if -d is set, and then runs
876 the subprocess without attempting to change uid/gid.
877
9edc04ce
PH
878PH/15 Minor change to Makefile for building test_host (undocumented testing
879 feature).
880
1349e1e5
PH
881PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
882 additional section of a DNS packet that returns MX or SRV records.
883 Instead, it always explicitly searches for A/AAAA records. This avoids
884 major problems that occur when a DNS server includes only records of one
885 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
886 fixed another bug: if SRV records were looked up and the corresponding
887 address records were *not* found in the additional section, the port
888 values from the SRV records were lost.
889
ea49d0e1
PH
890PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
891 using the correct key (the original address) when searching the retry
892 rules in order to find which one to use for generating the retry hint.
893
064a94c9
PH
894PH/18 If quota_warn_message contains a From: header, Exim now refrains from
895 adding the default one. Similarly, if it contains a Reply-To: header, the
896 errors_reply_to option, if set, is not used.
897
727071f8
PH
898PH/19 When calculating a retry time, Exim used to measure the "time since
899 failure" by looking at the "first failed" field in the retry record. Now
900 it does not use this if it is later than than the arrival time of the
901 message. Instead it uses the arrival time. This makes for better
902 behaviour in cases where some deliveries succeed, thus re-setting the
903 "first failed" field. An example is a quota failure for a huge message
904 when small messages continue to be delivered. Without this change, the
905 "time since failure" will always be short, possible causing more frequent
906 delivery attempts for the huge message than are intended.
dd16e114 907 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 908
f78eb7c6
PH
909PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
910 $1, $2, $3) because the numerical variables can be reset during some
911 expansion items (e.g. "match"), thereby losing the authentication data.
912
21c28500
PH
913PH/21 Make -bV show the size of off_t variables so that the test suite can
914 decide whether to run tests for quotas > 2G.
915
916PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
917 mailbox_size, and mailbox_filecount in the appendfile transport. If a
918 filecount value is greater than 2G or if a quota value is greater than 2G
919 on a system where the size of off_t is not greater than 4, a panic error
920 is given.
921
1688f43b
PH
922PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
923 never match. The debug and -bh output now contains an explicit error
924 message indicating a malformed IPv4 address or mask.
925
926PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
927 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
928 PH/23 above applies.
929
9675b384
PH
930PH/25 Do not write to syslog when running in the test harness. The only
931 occasion when this arises is a failure to open the main or panic logs
932 (for which there is an explicit test).
933
6a3f1455
PH
934PH/26 Added the /no_tell option to "control=freeze".
935
dac79d3e
PH
936PH/27 If a host name lookup failed very early in a connection, for example, if
937 the IP address matched host_lookup and the reverse lookup yielded a name
938 that did not have a forward lookup, an error message of the form "no IP
939 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
940 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 941
5977a0b3
PH
942PH/28 An enabling patch from MH: add new function child_open_exim2() which
943 allows the sender and the authenticated sender to be set when
944 submitting a message from within Exim. Since child_open_exim() is
945 documented for local_scan(), the new function should be too.
946
c91535f3
PH
947PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
948 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
949 results in an empty string is now treated as unset.
950
0d46a8c8
PH
951PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
952
278c6e6c
PH
953PH/31 Added sender_verify_fail logging option.
954
2cbb4081
PH
955PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
956 needed by RFC 822 but not by RFC 2822 was commented out. I have now
957 tidied the source and removed it altogether.
958
3eef829e
PH
959PH/33 When a queue run was abandoned because the load average was too high, a
960 log line was always written; now it is written only if the queue_run log
961 selector is set. In addition, the log line for abandonment now contains
962 information about the queue run such as the pid. This is always present
963 in "start" and "stop" lines but was omitted from the "abandon" line.
964
1ab95fa6
PH
965PH/34 Omit spaces between a header name and the colon in the error message that
966 is given when verify = headers_syntax fails (if there are lots of them,
967 the message gets confusing).
968
230205fc
PH
969PH/35 Change the default for dns_check_names_pattern to allow slashes within
970 names, as there are now some PTR records that contain slashes. This check
971 is only to protect against broken name servers that fall over on strange
972 characters, so the fact that it applies to all lookups doesn't matter.
973
75e0e026
PH
974PH/36 Now that the new test suite is complete, we can remove some of the
975 special code in Exim that was needed for the old test suite. For example,
976 sorting DNS records because real resolvers return them in an arbitrary
977 order. The new test suite's fake resolver always returns records in the
978 same order.
979
980PH/37 When running in the test harness, use -odi for submitted messages (e.g.
981 bounces) except when queue_only is set, to avoid logging races between
982 the different processes.
983
145396a6
PH
984PH/38 Panic-die if .include specifies a non-absolute path.
985
3cd34f13
PH
986PH/39 A tweak to the "H" retry rule from its user.
987
11121d3d
JJ
988JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
989 a label. They prevented compilation on older perls.
990
991JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
992 a warning to be raised on newish perls.
993
994JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
995 on queue. Changes to match documented behaviour of showing count of
996 messages matching specified criteria.
997
8def5aaf
PH
998PH/40 Changed the default ident timeout from 30s to 5s.
999
929ba01c
PH
1000PH/41 Added support for the use of login_cap features, on those BSD systems
1001 that have them, for controlling the resources used by pipe deliveries.
1002
2632889e
PH
1003PH/42 The content-scanning code uses fopen() to create files in which to put
1004 message data. Previously it was not paying any attention to the mode of
1005 the files. Exim runs with umask(0) because the rest of the code creates
1006 files with open(), and sets the required mode explicitly. Thus, these
1007 files were ending up world-writeable. This was not a big issue, because,
1008 being within the spool directory, they were not world-accessible. I have
1009 created a function called modefopen, which takes an additional mode
1010 argument. It sets umask(777), creates the file, chmods it to the required
1011 mode, then resets the umask. All the relevant calls to fopen() in the
1012 content scanning code have been changed to use this function.
1013
944a9c55
PH
1014PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1015 to 24 hours. This avoids potential overflow problems when processing G
1016 and H retry rules. I suspect nobody ever tinkers with this value.
1017
4a23603b
PH
1018PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1019
4730f942
PH
1020PH/45 When the plaintext authenticator is running as a client, the server's
1021 challenges are checked to ensure they are valid base64 strings. By
1022 default, the authentication attempt is cancelled if an invalid string is
1023 received. Setting client_ignore_invalid_base64 true ignores these errors.
1024 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1025 they are received. Thus, the responses can be made to depend on the
1026 challenges. If an invalid string is ignored, an empty string is placed in
1027 the variable.
1028
30dba1e6
PH
1029PH/46 Messages that are created by the autoreply transport now contains a
1030 References: header, in accordance with RFCs 2822 and 3834.
1031
382afc6b
PH
1032PH/47 Added authenticated_sender_force to the smtp transport.
1033
a86229cf
PH
1034PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1035
50c99ba6
PH
1036PH/49 Installed latest patch from the Sieve maintainer.
1037
d35e429d
PH
1038PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1039 was also set, the appendfile transport was unnecessarily scanning a
1040 directory of message files (e.g. for maildir delivery) to find the count
1041 of files (along with the size), even though it did not need this
1042 information. It now does the scan only if it needs to find either the
1043 size of the count of files.
1044
f90d018c
PH
1045PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1046
75def545
PH
1047PH/52 Two bugs concerned with error handling when the smtp transport is
1048 used in LMTP mode:
1049
1050 (i) Exim was not creating retry information for temporary errors given
1051 for individual recipients after the DATA command when the smtp transport
1052 was used in LMTP mode. This meant that they could be retried too
1053 frequently, and not timed out correctly.
1054
1055 (ii) Exim was setting the flag that allows error details to be returned
1056 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1057 recipients that were returned after the DATA command.
1058
1059PH/53 This is related to PH/52, but is more general: for any failing address,
1060 when detailed error information was permitted to be returned to the
1061 sender, but the error was temporary, then after the final timeout, only
1062 "retry timeout exceeded" was returned. Now it returns the full error as
1063 well as "retry timeout exceeded".
1064
c46782ef
PH
1065PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1066 do this, and (what is worse) MTAs that accept it.
1067
71fafd95
PH
1068PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1069 will now be deprecated.
1070
2c5db4fd
PH
1071PH/56 New os.c-cygwin from the Cygwin maintainer.
1072
9cf6b11a
JJ
1073JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1074 formats (previously only available in exim formats via -bpr, -bpru,
1075 and -bpra. Now also available in native and exiqgrep formats)
1076
1077JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1078 with very large, slow to parse queues
1079
1080JJ/08 exipick: added ! as generic prefix to negate any criteria format
1081
1082JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1083
898d150f
PH
1084PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1085 responses to authentication challenges, though it was showing the
1086 challenges; (ii) I've removed the CR characters from the debug output for
1087 SMTP output lines.
1088
46218253
PH
1089PH/58 Allow for the insertion of a newline as well as a space when a string
1090 is turned into more than one encoded-word during RFC 2047 encoding. The
1091 Sieve code now uses this.
1092
e97957bc
PH
1093PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1094 data_4xx, lost_connection, tls_required.
1095
81e509d7
PH
1096PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1097 message was being sent as an SMTP response.
1098
3d240ff7
PH
1099PH/61 Add -l and -k options to exicyclog.
1100
b37c4101
PH
1101PH/62 When verifying, if an address was redirected to one new address, so that
1102 verification continued, and the new address failed or deferred after
1103 having set something in $address_data, the value of $address_data was not
1104 passed back to the ACL. This was different to the case when no
1105 redirection occurred. The value is now passed back in both cases.
1106
79378e0f
PH
1107PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1108 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1109 use login_cap.h, so on its own it isn't the distinguishing feature. The
1110 new name refers directly to the setclassresources() function.
1111
e49c7bb4
PH
1112PH/65 Added configuration files for NetBSD3.
1113
d114ec46
PH
1114PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1115
f3d7df6c
PH
1116PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1117 is preferred over IPv4.
1118
715ab376
PH
1119PH/68 The bounce_return_message and bounce_return_body options were not being
1120 honoured for bounces generated during the reception of non-SMTP messages.
1121 In particular, this applied to messages rejected by the ACL. This bug has
1122 been fixed. However, if bounce_return_message is true and bounce_return_
1123 body is false, the headers that are returned for a non-SMTP message
1124 include only those that have been read before the error was detected.
1125 (In the case of an ACL rejection, they have all been read.)
1126
6b31b150
PH
1127PH/69 The HTML version of the specification is now built in a directory called
1128 spec_html instead of spec.html, because the latter looks like a path with
1129 a MIME-type, and this confuses some software.
1130
1131PH/70 Catch two compiler warnings in sieve.c.
1132
d515a917
PH
1133PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1134 function verify_get_ident() calls ip_connect() to connect a socket, but
1135 if the "connect()" function timed out, ip_connect() used to close the
1136 socket. However, verify_get_ident() also closes the socket later, and in
1137 between Exim writes to the log, which may get opened at this point. When
1138 the socket was closed in ip_connect(), the log could get the same file
1139 descriptor number as the socket. This naturally causes chaos. The fix is
1140 not to close the socket in ip_connect(); the socket should be closed by
1141 the function that creates it. There was only one place in the code where
1142 this was missing, in the iplookup router, which I don't think anybody now
1143 uses, but I've fixed it anyway.
1144
9b8fadde
PH
1145PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1146 well as to direct DNS lookups. Otherwise the handling of names in host
1147 lists is inconsistent and therefore confusing.
1148
214e2000 1149
5de37277
PH
1150Exim version 4.60
1151-----------------
1152
cc38ddbf
PH
1153PH/01 Two changes to the default runtime configuration:
1154
1155 (1) Move the checks for relay_from_hosts and authenticated clients from
1156 after to before the (commented out) DNS black list checks.
1157
1158 (2) Add control=submission to the relay_from_hosts and authenticated
1159 clients checks, on the grounds that messages accepted by these
1160 statements are most likely to be submissions.
5de37277 1161
72fdd6ae
PH
1162PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1163
1164 (1) Generate an error if the third argument for the ${prvs expansion is
1165 not a single digit.
1166
1167 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1168 string.
1169
1170 (3) Reset the variables that are obtained from the first argument of
1171 ${prvscheck and used in the second argument before leaving the code,
1172 because their memory is reclaimed, so using them afterwards may do
1173 silly things.
1174
1175 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1176 one (it's much easier than Tom thought :-).
1177
1178 (5) Because of (4), we can now allow for the use of $prvscheck_result
1179 inside the third argument.
cb9328de 1180
cb741023
PH
1181PH/03 For some reason, the default setting of PATH when running a command from
1182 a pipe transport was just "/usr/bin". I have changed it to
1183 "/bin:/usr/bin".
1184
f174f16e
PH
1185PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1186 anything to be listed in the output from -bV.
b2f5a032 1187
c25242d7
PH
1188PH/05 When a filter generated an autoreply, the entire To: header line was
1189 quoted in the delivery log line, like this:
1190
1191 => >A.N.Other <ano@some.domain> <original@ddress> ...
1192
1193 This has been changed so that it extracts the operative address. There
1194 may be more than one such address. If so, they are comma-separated, like
1195 this:
1196
1197 => >ano@some.domain,ona@other.domain <original@ddress> ...
1198
82c19f95
PH
1199PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1200 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1201 not being looked up in the rDNS to get a host name, Exim was showing the
1202 IP address twice in Received: lines, even though the IP addresses were
1203 identical. For example:
1204
1205 Received: from [1.2.3.4] (helo=[1.2.3.4])
1206
1207 However, if the real host name was known, it was omitting the HELO data
1208 if it matched the actual IP address. This has been tidied up so that it
1209 doesn't show the same IP address twice.
1210
d7ffbc12
PH
1211PH/07 When both +timestamp and +memory debugging was on, the value given by
1212 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1213 called by the debug printing, thereby overwriting the timestamp buffer.
1214 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1215
9f526266
PH
1216PH/08 When the original message was included in an autoreply transport, it
1217 always said "this is a copy of the message, including all the headers",
1218 even if body_only or headers_only was set. It now gives an appropriate
1219 message.
1220
87fcc8b9
PH
1221PH/09 Applied a patch from the Sieve maintainer which:
1222
1223 o fixes some comments
1224 o adds the (disabled) notify extension core
1225 o adds some debug output for the result of if/elsif tests
1226 o points to the current vacation draft in the documentation
1227 and documents the missing references header update
1228
1229 and most important:
1230
1231 o fixes a bug in processing the envelope test (when testing
1232 multiple envelope elements, the last element determinted the
1233 result)
1234
456682f5
PH
1235PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1236 Electronic Mail") by including:
1237
1238 Auto-submitted: auto-generated
1239
1240 in the messages that it generates (bounce messages and others, such as
1241 warnings). In the case of bounce messages for non-SMTP mesages, there was
1242 also a typo: it was using "Auto_submitted" (underscore instead of
1243 hyphen). Since every message generated by Exim is necessarily in response
1244 to another message, thes have all been changed to:
1245
1246 Auto-Submitted: auto-replied
1247
1248 in accordance with these statements in the RFC:
1249
1250 The auto-replied keyword:
1251
1252 - SHOULD be used on messages sent in direct response to another
1253 message by an automatic process,
1254
1255 - MUST NOT be used on manually-generated messages,
1256
1257 - MAY be used on Delivery Status Notifications (DSNs) and Message
1258 Disposition Notifications (MDNs),
1259
1260 - MUST NOT be used on messages generated by automatic or periodic
1261 processes, except for messages which are automatic responses to
1262 other messages.
1263
3e46c1aa
PH
1264PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1265 to the default Received: header definition.
456682f5 1266
49826d12
PH
1267PH/12 Added log selector acl_warn_skipped (default on).
1268
eba0c039
PH
1269PH/13 After a successful wildlsearch lookup, discard the values of numeric
1270 variables because (a) they are in the wrong storage pool and (b) even if
1271 they were copied, it wouldn't work properly because of the caching.
1272
a0d6ba8a
PH
1273PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1274 checking when decoding. Apparently there are clients that generate
1275 overlong encoded strings. Why am I not surprised?
1276
f0917727
PH
1277PH/15 If the first argument of "${if match_address" was not empty, but did not
1278 contain an "@" character, Exim crashed. Now it writes a panic log message
1279 and treats the condition as false.
1280
096fee00
PH
1281PH/16 In autoreply, treat an empty string for "once" the same as unset.
1282
024bd3c2
PH
1283PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1284 extension "envelope-auth". The code is finished and in agreement with
1285 other implementations, but there is no documentation so far and in fact,
1286 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1287 not changing the active code.
1288
1289 Print executed "if" and "elsif" statements when debugging is used. This
1290 helps a great deal to understand what a filter does.
1291
1292 Document more things not specified clearly in RFC3028. I had all this
1293 sorted out, when out of a sudden new issues came to my mind. Oops."
1294
df199fec
PH
1295PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1296 (Bugzilla #53).
1297
d27f1df3
PH
1298PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1299 canonical form (as documented). However, after a host name lookup from
1300 the IP address, check_host() was doing a simple string comparison with
1301 addresses acquired from the DNS when checking that the found name did
1302 have the original IP as one of its addresses. Since any found IPv6
1303 addresses are likely to be in abbreviated form, the comparison could
1304 fail. Luckily, there already exists a function for doing the comparison
1305 by converting both addresses to binary, so now that is used instead of
1306 the text comparison.
1307
96776534
PH
1308PH/20 There was another similar case to PH/19, when a complete host name was
1309 given in a host list; looking up its IP address could give an abbreviated
1310 form, whereas the current host's name might or might not be abbreviated.
1311 The same fix has been applied.
1312
5de37277 1313
9a799bc0
PH
1314Exim version 4.54
1315-----------------
1316
1317PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1318 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1319 It now does.
1320
99a4b039
PH
1321PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1322 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1323
1324PH/03 Typo: missing ".o" in src/pcre/Makefile.
1325
4b233853
PH
1326PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1327 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1328 Also, for "Auto-Submitted", treat anything other than "no" as
1329 non-personal, in accordance with RFC 3834. (Previously it treated
1330 anything starting "auto-" as non-personal.)
1331
8857ccfd
PH
1332TF/01 The control=submission/name=... option had a problem with syntax
1333 errors if the name included a slash character. The /name= option
1334 now slurps the rest of the string, so it can include any characters
1335 but it must come last in the list of options (after /sender_retain
1336 or /domain=).
1337
433a2980
PH
1338PH/05 Some modifications to the interface to the fake nameserver for the new
1339 testing suite.
1340
3e46c1aa 1341
9a799bc0 1342
e3a311ba
TK
1343Exim version 4.53
1344-----------------
1345
1346TK/01 Added the "success_on_redirect" address verification option. See
1347 NewStuff for rationale and an example.
1348
13b685f9
PH
1349PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1350
395ff96d
PH
1351PH/02 Patch to exigrep to allow it to work on syslog lines.
1352
5b68f6e4
PH
1353PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1354 fread() to skip over the body file's header line, because in Cygwin the
1355 header line is locked and is inaccessible.
1356
1ab52c69
PH
1357PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1358 co-exist for some time) to make it clear that it is the Exim ID that is
1359 referenced, not the Message-ID: header line.
1360
b07e6aa3
PH
1361PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1362 string_format() function, because snprintf() does not exist on all
1363 operating systems.
1364
254e032f
PH
1365PH/06 The use of forbid_filter_existstest now also locks out the use of the
1366 ${stat: expansion item.
1367
3af76a81
PH
1368PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1369 protocol synchronization error", to keep the pedants happy.
1370
2548ba04
PH
1371PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1372 well as for IRIX systems, when gcc is being used. See the host.c source
1373 file for comments.
1374
b6c6011d
PH
1375PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1376
cf39cf57
PH
1377PH/10 Named domain lists were not working if used in a queue_smtp_domains
1378 setting.
1379
f1513293
PH
1380PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1381 transport and to the smtp transport in LMTP mode.
1382
727549a4
PH
1383TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1384
af46795e
PH
1385PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1386 run a filter in a subprocess. This could lead to confusion in subsequent
1387 lookups in the parent process. There should also be a search_tidyup() at
1388 the end of the subprocess.
1389
d7b47fd0
PH
1390PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1391 only if the host matched helo_try_verify_hosts, which caused the
1392 verification to occur when the EHLO/HELO command was issued. The ACL just
1393 tested the remembered result. Now, if a previous verification attempt has
1394 not happened, "verify = helo" does it there and then.
1395
ee744174
JJ
1396JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1397
b582ab87
PH
1398TK/03 Fix log output including CR from clamd.
1399
41a13e0a
PH
1400PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1401 exist provoked a memory error which could cause a segfault.
1402
f625cc5a
PH
1403PH/15 Installed PCRE 6.2
1404
1405PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1406
21f7af35
PH
1407PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1408 of the problem. Specifically, suggested +O2 rather than +O1 for the
1409 HP-UX compiler.
1410
31480e42
PH
1411PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1412
2d280592
PH
1413PH/20 If a delivery was routed to a non-standard port by means of an SRV
1414 record, the port was not correctly logged when the outgoing_port log
1415 selector was set (it logged the transort's default port).
1416
7cd1141b
PH
1417PH/21 Added support for host-specific ports to manualroute, queryprogram,
1418 fallback_hosts, and "hosts" in the smtp transport.
1419
1420PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1421 host errors such as "Connection refused".
1422
750af86e
PH
1423PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1424 authentication with radiusclient 0.4.9:
1425
1426 - Error returned from rc_read_config was caught wrongly
1427 - Username/password not passed on to radius server due to wrong length.
1428
1429 The presumption is that some radiusclient API changes for 4.51/PH/17
1430 were not taken care of correctly. The code is still untested by me (my
1431 Linux distribution still has 0.3.2 of radiusclient), but it was
1432 contributed by a Radius user.
1433
1434PH/24 When doing a callout, the value of $domain wasn't set correctly when
1435 expanding the "port" option of the smtp transport.
1436
4304270b
TK
1437TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1438 while reading a MIME header. Thanks to Tom Hughes for a patch.
1439
750af86e
PH
1440PH/24 Include config.h inside local_scan.h so that configuration settings are
1441 available.
1442
64ffc24f
PH
1443PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1444 that in an ACL for RCPT (for example), you can examine exactly what was
1445 received.
1446
5dd9625b
PH
1447PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1448 commands, but it was not correctly comparing the address with the actual
1449 client host address. Thus, it would show the EHLO address in Received:
1450 header lines when this was not necessary.
1451
5591031b
PH
1452PH/27 Added the % operator to ${eval:}.
1453
ba18e66a
PH
1454PH/28 Exim tries to create and chdir to its spool directory when it starts;
1455 it should be ignoring failures (because with -C, for example, it has lost
1456 privilege). It wasn't ignoring creation failures other than "already
1457 exists".
1458
9cec981f
PH
1459PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1460 -bV or -d is used.
1461
aa2b5c79
PH
1462PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1463 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1464 too many continuations, the temporary file was not being removed, and the
1465 return code was incorrect.
aa2b5c79 1466
48a53b7f
PH
1467PH/31 Missing "BOOL" in function definition in filtertest.c.
1468
1c59d63b
PH
1469PH/32 Applied Sieve patches from the maintainer.
1470
671012da
TK
1471TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1472
1509d3a8
PH
1473PH/33 Added "verify = not_blind".
1474
1475PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1476 Local/Makefile (with some defaults set). These are used in built scripts
1477 such as exicyclog, but they have never been used in the exim_install
1478 script (though there are many overriding facilities there). I have
1479 arranged that the exim_install script now takes note of these two
1480 settings.
1481
1482PH/35 Installed configuration files for Dragonfly.
1483
2fe1a124
PH
1484PH/36 When a locally submitted message by a trusted user did not contain a
1485 From: header, and the sender address was obtained from -f or from an SMTP
1486 MAIL command, and the trusted user did not use -F to supply a sender
1487 name, $originator_name was incorrectly used when constructing a From:
1488 header. Furthermore, $originator_name was used for submission mode
1489 messages from external hosts without From: headers in a similar way,
1490 which is clearly wrong.
1491
8800895a
PH
1492PH/37 Added control=suppress_local_fixups.
1493
ccfdb010
PH
1494PH/38 When log_selector = +received_sender was set, and the addition of the
1495 sender made the log line's construction buffer exactly full, or one byte
1496 less than full, an overflow happened when the terminating "\n" was
1497 subsequently added.
1498
1130bfb0
PH
1499PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1500 when the result of a list match is failure because a DNS lookup failed.
1501
ebcb507f
PH
1502PH/40 RM_COMMAND is now used in the building process.
1503
c35e155c
PH
1504PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1505 the "build-* directories that it finds.
1506
95d1f782
PH
1507PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1508 address in a domain literal was a prefix of an interface address.
1509
fd6de02e
PH
1510PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1511 when verifying a sender address, unless rewrite_headers is false.
1512
58de37c5
PH
1513PH/44 Wrote a long comment about why errors_to addresses are verified as
1514 recipients, not senders.
1515
261cf466
TF
1516TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1517 the ratelimit ACL was added.
1518
3ee512ff
PH
1519PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1520
e08c430f
PH
1521PH/46 Added extra information about PostgreSQL errors to the error string.
1522
bef5a11f
PH
1523PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1524 avoiding the need to install special zones in a real server. This is
1525 backwards compatible; if it can't find the fake resolver, it drops back.
1526 Thus, both old and new test suites can be run.
1527
7546de58
TF
1528TF/02 Added util/ratelimit.pl
1529
e5d5a95f
TF
1530TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1531 clock is set back in time.
1532
2e88a017
TF
1533TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1534 Candler <B.Candler@pobox.com>.
1535
a5f65aa4
TF
1536TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1537 OK for addresses that are the result of redirections.
1538
e7726cbf
PH
1539PH/48 A number of further additions for the benefit of the new test suite,
1540 including a fake gethostbyname() that interfaces to the fake DNS resolver
1541 (see PH/47 above).
1542
a7fdad5b
TF
1543TF/06 The fix for widen_domains has also been applied to qualify_single and
1544 search_parents which are the other dnslookup options that can cause
1545 header rewrites.
1546
6af56900
PH
1547PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1548 type ("H").
1549
0925ede6
PH
1550PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1551
66afa403
TF
1552TF/07 Exim produced the error message "an SRV record indicated no SMTP
1553 service" if it encountered an MX record with an empty target hostname.
1554 The message is now "an MX or SRV record indicated no SMTP service".
1555
0154e85a
TF
1556TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1557 if the DNS of the sending site is misconfigured. This is quite a
1558 common situation. This change restores the behaviour of treating a
1559 helo verification defer as a failure.
1560
16f12c76
PH
1561PH/51 If self=fail was set on a router, the bounce message did not include the
1562 actual error message.
1563
bbe902f0 1564
e5a9dba6
PH
1565Exim version 4.52
1566-----------------
1567
1568TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1569
22c3b60b
PH
1570PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1571 command itself ended in error, the underlying message about the transport
1572 filter timeout was being overwritten with the pipe command error. Now the
1573 underlying error message should be appended to the second error message.
1574
06a9b4b5
PH
1575TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1576
c1ac6996
PH
1577PH/02 Reduce the amount of output that "make" produces by default. Full output
1578 can still be requested.
1579
9c7a242c
PH
1580PH/03 The warning log line about a condition test deferring for a "warn" verb
1581 was being output only once per connection, rather than after each
1582 occurrence (because it was using the same function as for successful
1583 "warn" verbs). This seems wrong, so I have changed it.
1584
87ba3f5f
PH
1585TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1586 it should not have, which might have caused a crash in the right
1587 circumstances, but probably never did.
1588
1589PH/04 Installed a modified version of Tony Finch's patch to make submission
1590 mode fix the return path as well as the Sender: header line, and to
1591 add a /name= option so that you can make the user's friendly name appear
1592 in the header line.
1593
29aba418
TF
1594TF/03 Added the control = fakedefer ACL modifier.
1595
fe0dab11
TF
1596TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1597 Mark Lowes for thorough testing.
870f6ba8 1598
11d337a4
TK
1599TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1600
1601TK/03 Merged latest SRS patch from Miles Wilton.
1602
415c8f3b
PH
1603PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1604 with the definition in sysexits.h (which is #included earlier).
1605 Fortunately, Exim does not actually use EX_OK. The code used to try to
1606 preserve the sysexits.h value, by assumimg that macro definitions were
1607 scanned for macro replacements. I have been disabused of this notion,
1608 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1609
958541e9
PH
1610PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1611 in the smtp transport. When a block could not be written in a single
1612 write() function, the timeout was being re-applied to each part-write.
1613 This seems wrong - if the receiver was accepting one byte at a time it
1614 would take for ever. The timeout is now adjusted when this happens. It
1615 doesn't have to be particularly precise.
1616
c206415f
TK
1617TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1618 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1619
2a4be8f9
PH
1620PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1621 without a domain if the check to <postmaster@domain> fails.
1622
1cba11c5
SC
1623SC/01 Eximstats: added -xls and the ability to specify output files
1624 (patch written by Frank Heydlauf).
1625
1626SC/02 Eximstats: use FileHandles for outputing results.
1627
1628SC/03 Eximstats: allow any combination of xls, txt, and html output.
1629
1630SC/04 Eximstats: fixed display of large numbers with -nvr option
1631
1632SC/05 Eximstats: fixed merging of reports with empty tables.
1633
1634SC/06 Eximstats: added the -include_original_destination flag
1635
1636SC/07 Eximstats: removed tabs and trailing whitespace.
1637
1005d00e
TK
1638TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1639
1640TK/06 MBOX spool code: Add real "From " MBOX separator line
1641 so the .eml file is really in mbox format (even though
1642 most programs do not really care). Patch from Alex Miller.
1643
1644TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1645 The latter is generated from $received_to and is only set if the
1646 message has one envelope recipient. SA can use these headers,
1647 obviously out-of-the-box. Patch from Alex Miller.
1648
9b4768fa
PH
1649PH/08 The ${def test on a variable was returning false if the variable's
1650 value was "0", contrary to what the specification has always said!
1651 The result should be true unless the variable is empty.
1652
1653PH/09 The syntax error of a character other than { following "${if
1654 def:variable_name" (after optional whitespace) was not being diagnosed.
1655 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1656 accidental colon was present, for example, could give incorrect results.
1657
0d7eb84a
PH
1658PH/10 Tidied the code in a number of places where the st_size field of a stat()
1659 result is used (not including appendfile, where other changes are about
1660 to be made).
1661
1662PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1663 This involved changing a lot of size variables from int to off_t. It
1664 should work with maildirs and everything.
1665
40727bee
TK
1666TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1667 spamd dying while we are connected to it.
1668
554d2369
TF
1669TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1670 <jgh@wizmail.org>
1671
1f922db1
PH
1672PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1673 function for BDB 4.3.
1674
ef213c3b
PH
1675PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1676
8ac170f3
PH
1677PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1678 the sources for PCRE have been re-arranged and more files are now
1679 involved.
1680
b1c749bb
PH
1681PH/15 The code I had for printing potentially long long variables in PH/11
1682 above was not the best (it lost precision). The length of off_t variables
1683 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1684 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1685 to be "long long int" or "long int". This is needed for the internal
1686 formatting function string_vformat().
b1c749bb 1687
4aac9b49
PH
1688PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1689 the configuration file to be ":syslog", then the script "guesses" where
1690 the logs files are, rather than using the compiled in default. In our
1691 case the guess is not the same as the compiled default, so the script
1692 suddenly stopped working when I started to use syslog. The patch checks
1693 to see if log_file_path is "". If so, it attempts to read it from exim
1694 with no configuration file to get the compiled in version, before it
1695 falls back to the previous guessing code."
1696
294520c8
TK
1697TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1698 implementing BATV in an Exim configuration. See NewStuff for the gory
1699 details.
1700
5bd022fe
PH
1701PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1702 Makefile that are specific to HP-UX.
1703
90e9ce59
PH
1704PH/18 If the "use_postmaster" option was set for a recipient callout together
1705 with the "random" option, the postmaster address was used as the MAIL
1706 FROM address for the random test, but not for the subsequent recipient
1707 test. It is now used for both.
1708
5ea81592
PH
1709PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1710 patch removes a few documentation additions to RFC 3028, because the
1711 latest draft now contains them. It adds the new en;ascii-case comparator
1712 and a new error check for 8bit text in MIME parts. Comparator and
1713 require names are now matched exactly. I enabled the subaddress
1714 extension, but it is not well tested yet (read: it works for me)."
1715
c6c2dc1d
PH
1716PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1717 rework some of the code of TK/09 above to avoid the hardwired use of
1718 "%lld" and "long long". Replaced the call to snprintf() with a call to
1719 string_vformat().
1720
fffffe4c
PH
1721PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1722 records point to non-existent hosts", "retry timeout exceeded", and
1723 "retry time not reached for any host after a long failure period".
ca02eafb 1724
9a26b6b2
PH
1725PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1726 experimental DomainKeys support:
1727
1728 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1729 (2) On an error such as an illegally used "control", the wrong name for
1730 the control was given.
1731
1732 These problems did NOT occur unless DomainKeys support was compiled.
1733
4aee0225
PH
1734PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1735
32d668a5
PH
1736PH/24 Added ${if match_ip condition.
1737
8187c3f3
PH
1738PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1739 databases so that it will be absolutely obvious if a crash occurs in the
1740 DB library. This is a regular occurrence (often caused by mis-matched
1741 db.h files).
1742
ff790e47 1743PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1744 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1745 picked up on a user's system that detects such things. There doesn't seem
1746 to be a gcc warning option for this - only an attribute that has to be
1747 put on the function's prototype. It seems that in Fedora Core 4 they have
1748 set this on a number of new functions. No doubt there will be more in due
1749 course.
ff790e47 1750
5417f6d1
PH
1751PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1752 specify a transport. However, if an address that was verified by such a
1753 router was the subject of a callout, Exim crashed because it tried to
1754 read the rcpt_include_affixes from the non-existent transport. Now it
1755 just assumes that the setting of that option is false. This bug was
1756 introduced by 4.51/PH/31.
1757
59cf8544
PH
1758PH/28 Changed -d+all to exclude +memory, because that information is very
1759 rarely of interest, but it makes the output a lot bigger. People tend to
1760 do -d+all out of habit.
1761
e7ad8a65
PH
1762PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1763 code in os-type was giving problems when libc.so lives in lib64, like on
1764 x86_64 Fedora Core.
1765
ade42478
PH
1766PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1767 aren't the modern standard, and it seems that some systems' include files
1768 don't always have them. Exim was already checking for some of the newer
1769 ones like T_AAAA, and defining it itself. I've added checks for all the
1770 record types that Exim uses.
1771
182ad5cf
PH
1772PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1773 not automatically generating a new one, as it is supposed to. This
1774 prevented TLS from working. If the file did exist, but contained invalid
1775 data, a new version was generated, as expected. It was only the case of a
1776 non-existent file that was broken.
1777
b0d9fc80
TK
1778TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1779 with a change in libdomainkeys > 0.64.
1780
1781TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1782 from DNS. If the selector record carries the flag, it now has
1783 precedence over the domain-wide flag.
1784
1785TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1786
47c7a64a
PH
1787PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1788 the use of a port name that isn't defined in /etc/services) occurred, the
1789 message was deferred as in a normal delivery, and thus remained on the
1790 spool, instead of being failed because of the mua_wrapper setting. This
1791 is now fixed, and I tidied up some of the mua_wrapper messages at the
1792 same time.
1793
a388bce4
SC
1794SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1795 the messages in a hash of arrays rather than using individual hashes.
1796 This is a bit cleaner and results in dramatic memory savings, albeit
1797 at a slight CPU cost.
1798
1799SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1800 as requested by Marc Sherman.
1801
1802SC/10 Eximstats: added histograms for user specified patterns as requested
1803 by Marc Sherman.
1804
0793e4ed
SC
1805SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1806
c58b88df
PH
1807PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1808 fopen() in the content-scanning modules that did not already have it.
1809
e7ad8a65 1810
7982096b
PH
1811Exim version 4.51
1812-----------------
1813
1a46a8c5
PH
1814TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1815 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1816
2f079f46 1817TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1818
1819TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1820
1821PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1822 to test Sieve filters that use "vacation".
1823
1824PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1825 that changes the way the GnuTLS parameters are stored in the cache file.
1826 The new format can be generated externally. For backward compatibility,
1827 if the data in the cache doesn't make sense, Exim assumes it has read an
1828 old-format file, and it generates new data and writes a new file. This
1829 means that you can't go back to an older release without removing the
1830 file.
1831
1832PH/03 A redirect router that has both "unseen" and "one_time" set does not
1833 work if there are any delivery delays because "one_time" forces the
1834 parent to be marked "delivered", so its unseen clone is never tried
1835 again. For this reason, Exim now forbids the simultaneous setting of
1836 these two options.
1837
1838PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1839 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1840 entry if you want to know the details. The fix, however, neglected to
1841 consider the case when local delivery batching is involved. The test for
1842 "previously delivered" was not happening when checking to see if an
1843 address could be batched with a previous (undelivered) one; under
1844 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1845 address.
1a46a8c5
PH
1846
1847PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1848 in its include files, and this causes problems building Exim.
1849
1850PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1851 header_syntax) but Exim was just ignoring anything given after a slash.
1852 In particular, this caused confusion with an attempt to use "verify =
1853 reverse_host_lookup/defer_ok". An error is now given when options are
1854 supplied for verify items that do not have them. (Maybe reverse_host_
1855 lookup should have a defer_ok option, but that's a different point.)
1856
1857PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1858 defined by RFC 821) to 2048, because there were problems with some AUTH
1859 commands, and RFC 1869 says the size should be increased for extended
1860 SMTP commands that take arguments.
1861
1862PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1863 Finch).
1864
1865PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1866 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1867
49c2d5ea
PH
1868PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1869 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1870 whatever). Otherwise the password may appear in the log. Following change
1871 PH/42 below, there is no longer a chance of it appearing in a bounce
1872 message.
49c2d5ea 1873
bf759a8b
PH
1874PH/11 Installed exipick version 20050225.0 from John Jetmore.
1875
83364d30
PH
1876PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1877 of its addresses was ever tried. (Bugzilla bug #2.)
1878
7999bbd7
PH
1879PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1880 the result incorrectly in the debug output. (It correctly added a newline
1881 to what was transported.)
1882
7dbf77c9
PH
1883TF/01 Added $received_time.
1884
74e0617f
PH
1885PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1886 commented out examples of how to interface to a virus scanner and to
1887 SpamAssassin. Also added commented examples of av_scanner and
1888 spamd_address settings.
1889
2f079f46
PH
1890PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1891 and controls are allowed in which ACLs. There were a couple of minor
1892 errors. Some of the entries in the conditions table (which is a table of
1893 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1894 negation of where the condition IS allowed.
1895
8c841523
PH
1896PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1897
7766a4f0
PH
1898PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1899 header file does not have a version number, so I've had to invent a new
1900 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1901 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1902 radiusclient), but it was contributed by a Radius user.
1903
8b417f2c
PH
1904PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1905 files or directories, for OpenSSL.
1906
901f42cb
PH
1907PH/19 When an Exim process that is running as root has to create an Exim log
1908 file, it does so in a subprocess that runs as exim:exim so as to get the
1909 ownership right at creation (otherwise, other Exim processes might see
1910 the file with the wrong ownership). There was no test for failure of this
1911 fork() call, which would lead to the process getting stuck as it waited
1912 for a non-existent subprocess. Forks do occasionally fail when resources
1913 run out. I reviewed all the other calls to fork(); they all seem to check
1914 for failure.
1915
f9b9210e
PH
1916PH/20 When checking for unexpected SMTP input at connect time (before writing
1917 the banner), Exim was not dealing correctly with a non-positive return
1918 from the read() function. If the client had disconnected by this time,
1919 the result was a log entry for a synchronization error with an empty
1920 string after "input=" when read() returned zero. If read() returned -1
1921 (an event I could not check), uninitialized data bytes were printed.
1922 There were reports of junk text (parts of files, etc) appearing after
1923 "input=".
1924
54cdb463
PH
1925PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1926
cf00dad6
PH
1927PH/22 Added support for macro redefinition, and (re)definition in between
1928 driver and ACL definitions.
1929
acb1b346
PH
1930PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1931 forgetting to use the resulting value; it was using the unexpanded value.
1932
c5ddb310
PH
1933PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1934 hadn't been configured. The fix is from Juergen Kreileder, who
1935 understands it better than I do:
1936
1937 "Here's what I see happening with three configured cyrus_sasl
1938 authenticators configured (plain, login, cram-md5):
1939
1940 On startup auth_cyrus_sasl_init() gets called for each of these.
1941 This means three calls to sasl_listmech() without a specified mech_list.
1942 => SASL tests which mechs of all available mechs actually work
1943 => three warnings about OTP not working
1944 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1945
1946 With the patch, sasl_listmech() also gets called three times. But now
1947 SASL's mech_list option is set to the server_mech specified in the the
1948 authenticator. Or in other words, the answer from sasl_listmech()
1949 gets limited to just the mech you're testing for (which is different
1950 for each call.)
1951 => the return list contains just 'plain' or 'login', 'cram-md5' or
1952 nothing depending on the value of ob->server_mech.
1953
1954 I've just tested the patch: Authentication still works fine,
1955 unavailable mechs specified in the exim configuration are still
1956 caught, and the auth.log warnings about OTP are gone."
1957
31619da6
PH
1958PH/25 When debugging is enabled, the contents of the command line are added
1959 to the debugging output, even when log_selector=+arguments is not
1960 specified.
1961
bebaf0fc
PH
1962PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1963 answer is "GNU", and only if the return is "GNU/something" is the answer
1964 "Linux".
1965
475fe28a
PH
1966PH/27 $acl_verify_message is now set immediately after the failure of a
1967 verification in an ACL, and so is available in subsequent modifiers. In
1968 particular, the message can be preserved by coding like this:
1969
1970 warn !verify = sender
1971 set acl_m0 = $acl_verify_message
1972
1973 Previously, $acl_verify_message was set only while expanding "message"
1974 and "log_message" when a very denied access.
1975
7e8bec7a
PH
1976PH/28 Modified OS/os.c-Linux with
1977
1978 -#ifndef OS_LOAD_AVERAGE
1979 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1980
1981 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1982 nomenclature these days.)
1983
e4a89c47
PH
1984PH/29 Installed patch from the Sieve maintainer that adds the options
1985 sieve_useraddress and sieve_subaddress to the redirect router.
1986
5ca2a9a1
PH
1987PH/30 In these circumstances:
1988 . Two addresses routed to the same list of hosts;
1989 . First host does not offer TLS;
1990 . First host accepts first address;
1991 . First host gives temporary error to second address;
1992 . Second host offers TLS and a TLS session is established;
1993 . Second host accepts second address.
1994 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1995 and peerdn, if requested) that were in fact used only for the second
1996 address.
7e8bec7a 1997
c688b954
PH
1998PH/31 When doing a callout as part of verifying an address, Exim was not paying
1999 attention to any local part prefix or suffix that was matched by the
2000 router that accepted the address. It now behaves in the same way as it
2001 does for delivery: the affixes are removed from the local part unless
2002 rcpt_include_affixes is set on the transport.
2003
fed77020
PH
2004PH/32 Add the sender address, as F=<...>, to the log line when logging a
2005 timeout during the DATA phase of an incoming message.
2006
7fe1560f
PH
2007PH/33 Sieve envelope tests were broken for match types other than :is. I have
2008 applied a patch sanctioned by the Sieve maintainer.
c688b954 2009
ebb6e6d5
PH
2010PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2011 the uid or gid is negative. A case of a negative gid caused this to be
2012 noticed. The fix allows for either to be negative.
2013
9c4e8f60
PH
2014PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2015 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2016 overlooked.
2017
2018PH/36 The change PH/12 above was broken. Fixed it.
2019
d7174846
PH
2020PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2021 the grounds that routing the same address twice would always produce the
2022 same answer. This might have been true once, but it is certainly no
2023 longer true now. Routing a child address may depend on the previous
2024 routing that produced that child. Some complicated redirection strategies
2025 went wrong when messages had multiple recipients, and made Exim's
2026 behaviour dependent on the order in which the addresses were given.
2027
2028 I have moved the duplicate checking until after the routing is complete.
2029 Exim scans the addresses that are assigned to local and remote
2030 transports, and removes any duplicates. This means that more work will be
2031 done, as duplicates will always all be routed, but duplicates are
2032 presumably rare, so I don't expect this is of any significance.
2033
2034 For deliveries to pipes, files, and autoreplies, the duplicate checking
2035 still happens during the routing process, since they are not going to be
2036 routed further.
2037
cfe75fc3
PH
2038PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2039 It corrects a timeout issue with spamd. This is Ian's comment: "The
2040 background is that sometimes spamd either never reads data from a
2041 connection it has accepted, or it never writes response data. The exiscan
2042 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2043 blindly assumes that writes won't block so it may never time out."
2044
be22d70e
PH
2045PH/39 Allow G after quota size as well as K and M.
2046
0612b098
PH
2047PH/40 The value set for $authenticated_id in an authenticator may not contain
2048 binary zeroes or newlines because the value is written to log lines and
2049 to spool files. There was no check on this. Now the value is run through
2050 the string_printing() function so that such characters are converted to
2051 printable escape sequences.
2052
2e0c1448
PH
2053PH/41 $message_linecount is a new variable that contains the total number of
2054 lines in the message. Compare $body_linecount, which is the count for the
2055 body only.
2056
447d236c
PH
2057PH/42 Exim no longer gives details of delivery errors for specific addresses in
2058 bounce and delay warning messages, except in certain special cases, which
2059 are as follows:
2060
2061 (a) An SMTP error message from a remote host;
2062 (b) A message specified in a :fail: redirection;
2063 (c) A message specified in a "fail" command in a system filter;
2064 (d) A message specified in a FAIL return from the queryprogram router;
2065 (e) A message specified by the cannot_route_message router option.
2066
2067 In these cases only, Exim does include the error details in bounce and
2068 warning messages. There are also a few cases where bland messages such
2069 as "unrouteable address" or "local delivery error" are given.
2070
d20976dc
PH
2071PH/43 $value is now also set for the "else" part of a ${run expansion.
2072
f656d135
PH
2073PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2074 being worked on, but at least Exim now implements the latest version to
2075 play with."
2076
2e2a30b4
PH
2077PH/45 In a pipe transport, although a timeout while waiting for the pipe
2078 process to complete was treated as a delivery failure, a timeout while
2079 writing the message to the pipe was logged, but erroneously treated as a
2080 successful delivery. Such timeouts include transport filter timeouts. For
2081 consistency with the overall process timeout, these timeouts are now
2082 treated as errors, giving rise to delivery failures by default. However,
2083 there is now a new Boolean option for the pipe transport called
2084 timeout_defer, which, if set TRUE, converts the failures into defers for
2085 both kinds of timeout. A transport filter timeout is now identified in
2086 the log output.
2087
9176e9f0
PH
2088PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2089 systems where "make" and "gmake" are different, calling "gmake" at top
2090 level broke things. I've arranged for the value of $(MAKE) to be passed
2091 from the Makefile to this script so that it can call the same version of
2092 "make".
2093
7982096b 2094
bbe902f0
PH
2095A note about Exim versions 4.44 and 4.50
2096----------------------------------------
2097
2098Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2099changes of various kinds. As a consequence, a big documentation update was
2100needed. This delayed the release for rather longer than seemed good, especially
2101in the light of a couple of (minor) security issues. Therefore, the changes
2102that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2103release. So 4.44 and 4.50 are in effect two different branches that both start
2104from 4.43.
2105
2106I have left the 4.50 change log unchanged; it contains all the changes since
21074.43. The change log for 4.44 is below; many of its items are identical to
2108those for 4.50. This seems to be the most sensible way to preserve the
2109historical information.
2110
2111
f7b63901 2112Exim version 4.50
495ae4b0
PH
2113-----------------
2114
5fe762f6
PH
2115 1. Minor wording change to the doc/README.SIEVE file.
2116
139059f6 2117 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2118 computation of the current number of files was incorrect.
495ae4b0 2119
7086e875
PH
2120 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2121 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2122 place.
2123
35af9f61
PH
2124 4. Give more explanation in the error message when the command for a transport
2125 filter fails to execute.
2126
b668c215
PH
2127 5. There are several places where Exim runs a non-Exim command in a
2128 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2129 was being done only for the command run by the queryprogram router. It is
2130 now done for all such subprocesses. The other cases are: ${run, transport
2131 filters, and the commands run by the lmtp and pipe transports.
2132
a494b1e1
PH
2133 6. Added CONFIGURE_GROUP build-time option.
2134
2135 7. Some older OS have a limit of 256 on the maximum number of file
2136 descriptors. Exim was using setrlimit() to set 1000 as a large value
2137 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2138 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2139
c5fcb476
PH
2140 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2141 was an oversight, and furthermore, ever since the addition of extra
2142 controls (e.g. 4.43/32), the checks on when to allow different forms of
2143 "control" were broken. There should now be diagnostics for all cases when a
2144 control that does not make sense is encountered.
2145
69358f02
PH
2146 9. Added the /retain_sender option to "control=submission".
2147
5be20824
PH
214810. $recipients is now available in the predata ACL (oversight).
2149
eb2c0248
PH
215011. Tidy the search cache before the fork to do a delivery from a message
2151 received from the command line. Otherwise the child will trigger a lookup
2152 failure and thereby defer the delivery if it tries to use (for example) a
2153 cached ldap connection that the parent has called unbind on.
2154
2a3eea10
PH
215512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2156 of $address_data from the recipient verification was clobbered by the
2157 sender verification.
2158
215913. The value of address_data from a sender verification is now available in
2160 $sender_address_data in subsequent conditions in the ACL statement.
2161
23c7ff99
PH
216214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2163
4deaf07d
PH
216415. Added a new option "connect=<time>" to callout options, to set a different
2165 connection timeout.
2166
926e1192
PH
216716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2168 was its contents. (It was OK if the option was not defined at all.)
2169
650edc6f
PH
217017. A "Completed" log line is now written for messages that are removed from
2171 the spool by the -Mrm option.
2172
2c7db3f5
PH
217318. New variables $sender_verify_failure and $recipient_verify_failure contain
2174 information about exactly what failed.
2175
3d235903
PH
217619. Added -dd to debug only the daemon process.
2177
7c7ad977
PH
217820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2179 handles timeouts, both on the server side and network timeouts. Renamed the
2180 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2181
981756db
PH
218221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2183 It is now set to "smtps".
2184
d4eb88df
PH
218522. $host_address is now set to the target address during the checking of
2186 ignore_target_hosts.
2187
218823. When checking ignore_target_hosts for an ipliteral router, no host name was
2189 being passed; this would have caused $sender_host_name to have been used if
2190 matching the list had actually called for a host name (not very likely,
2191 since this list is usually IP addresses). A host name is now passed as
2192 "[x.x.x.x]".
2193
7d468ab8
PH
219424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2195 code that specifies a non-restarting handler (typically sigaction() in
2196 modern systems) in an attempt to fix a rare and obscure crash bug.
2197
219825. Narrowed the window for a race in the daemon that could cause it to ignore
2199 SIGCHLD signals. This is not a major problem, because they are used only to
2200 wake it up if nothing else does.
2201
62c0818f
PH
220226. A malformed maildirsize file could cause Exim to calculate negative values
2203 for the mailbox size or file count. Odd effects could occur as a result.
2204 The maildirsize information is now recalculated if the size or filecount
2205 end up negative.
2206
26034054
PH
220727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2208 support for a long time. Removed HAVE_SYS_VFS_H.
2209
af66f652
PH
221028. Installed the latest version of exipick from John Jetmore.
2211
90af77f4
PH
221229. In an address list, if the pattern was not a regular expression, an empty
2213 subject address (from a bounce message) matched only if the pattern was an
2214 empty string. Non-empty patterns were not even tested. This was the wrong
2215 because it is perfectly reasonable to use an empty address as part of a
2216 database query. An empty address is now tested by patterns that are
2217 lookups. However, all the other forms of pattern expect the subject to
2218 contain a local part and a domain, and therefore, for them, an empty
2219 address still always fails if the pattern is not itself empty.
2220
d8ef3577
PH
222130. Exim went into a mad DNS loop when attempting to do a callout where the
2222 host was specified on an smtp transport, and looking it up yielded more
2223 than one IP address.
2224
5cb8cbc6
PH
222531. Re-factored the code for checking spool and log partition space into a
2226 function that finds that data and another that does the check. The former
2227 is then used to implement four new variables: $spool_space, $log_space,
2228 $spool_inodes, and $log_inodes.
2229
14702f5b
PH
223032. The RFC2047 encoding function was originally intended for short strings
2231 such as real names; it was not keeping to the 75-character limit for
2232 encoded words that the RFC imposes. It now respects the limit, and
2233 generates multiple encoded words if necessary. To be on the safe side, I
2234 have increased the buffer size for the ${rfc2047: expansion operator from
2235 1024 to 2048 bytes.
2236
063b1e99
PH
223733. It is now permitted to omit both strings after an "if" condition; if the
2238 condition is true, the result is "true". As before, when the second string
2239 is omitted, a false condition yields an empty string. This makes it less
2240 cumbersome to write custom ACL and router conditions.
2241
652e1b65
PH
224234. Failure to deliver a bounce message always caused it to be frozen, even if
2243 there was an errors_to setting on the router. The errors_to setting is now
2244 respected.
2245
6f0c9a4f
PH
224635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2247 canonical form (fully expanded) before being placed in
2248 $sender_host_address.
2249
33397d19
PH
225036. The table in the code that translates DNS record types into text (T_A to
2251 "A" for instance) was missing entries for NS and CNAME. It is just possible
2252 that this could have caused confusion if both these types were looked up
2253 for the same domain, because the text type is used as part of Exim's
2254 per-process caching. But the chance of anyone hitting this buglet seems
2255 very small.
2256
7bb56e1f
PH
225737. The dnsdb lookup has been extended in a number of ways.
2258
2259 (1) There is a new type, "zns", which walks up the domain tree until it
2260 finds some nameserver records. It should be used with care.
2261
ea3bc19b
PH
2262 (2) There is a new type, "mxh", which is like "mx" except that it returns
2263 just the host names, not the priorities.
2264
2265 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2266 looked up. The behaviour when one of the lookups defers can be
2267 controlled by a keyword.
7bb56e1f 2268
ea3bc19b 2269 (4) It is now possible to specify the separator character for use when
7bb56e1f 2270 multiple records are returned.
33397d19 2271
0bcb2a0e
PH
227238. The dnslists ACL condition has been extended: it is now possible to supply
2273 a list of IP addresses and/or domains to be looked up in a particular DNS
2274 domain.
2275
2ac0e484
PH
227639. Added log_selector=+queue_time_overall.
2277
4e1fde53
PH
227840. When running the queue in the test harness, wait just a tad after forking a
2279 delivery process, to get repeatability of debugging output.
2280
de365ded
PH
228141. Include certificate and key file names in error message when GnuTLS fails
2282 to set them up, because the GnuTLS error message doesn't include the name
2283 of the failing file when there is a problem reading it.
2284
f05da2e8
PH
228542. Allow both -bf and -bF in the same test run.
2286
d6453af2
PH
228743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2288
f7b63901
PH
228944. The "Exiscan patch" is now merged into the mainline Exim source.
2290
229145. Sometimes the final signoff response after QUIT could fail to get
2292 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2293 < 0 before doing a fflush(). This bug looks as though it goes back to the
2294 introduction of TLS in release 3.20, but "sometimes" must have been rare
2295 because the tests only now provoked it.
2296
a444213a
PH
229746. Reset the locale to "C" after calling embedded Perl, in case it was changed
2298 (this can affect the format of dates).
2299
0ec020ea
PH
230047. exim_tidydb, when checking for the continued existence of a message for
2301 which it has found a message-specific retry record, was not finding
2302 messages that were in split spool directories. Consequently, it was
2303 deleting retry records that should have stayed in existence.
2304
b1206957
PH
230548. Steve fixed some bugs in eximstats.
2306
230749. The SPA authentication driver was not abandoning authentication and moving
2308 on to the next authenticator when an expansion was forced to fail,
2309 contradicting the general specification for all authenticators. Instead it
2310 was generating a temporary error. It now behaves as specified.
2311
26dd5a95
PH
231250. The default ordering of permitted cipher suites for GnuTLS was pessimal
2313 (the order specifies the preference for clients). The order is now AES256,
2314 AES128, 3DES, ARCFOUR128.
2315
343b2385
PH
231651. Small patch to Sieve code - explicitly set From: when generating an
2317 autoreply.
2318
1c5466b9
PH
231952. Exim crashed if a remote delivery caused a very long error message to be
2320 recorded - for instance if somebody sent an entire SpamAssassin report back
2321 as a large number of 550 error lines. This bug was coincidentally fixed by
2322 increasing the size of one of Exim's internal buffers (big_buffer) that
2323 happened as part of the Exiscan merge. However, to be on the safe side, I
2324 have made the code more robust (and fixed the comments that describe what
2325 is going on).
2326
55ee9ee3
PH
232753. Now that there can be additional text after "Completed" in log lines (if
2328 the queue_time_overall log selector is set), a one-byte patch to exigrep
2329 was needed to allow it to recognize "Completed" as not the last thing in
2330 the line.
2331
d38f8232
PH
233254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2333 patch that reportedly fixes this has been added. I am not expert enough to
2334 create a test for it. This is what the patch creator wrote:
2335
2336 "I found a little strange behaviour of ldap code when working with
2337 Windows 2003 AD Domain, where users was placed in more than one
2338 Organization Units. When I tried to give exim partial DN, the exit code
2339 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2340 But simultaneously result of request was absolutely normal ldap result,
2341 so I produce this patch..."
2342
3295e65b
PH
2343 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2344 REFERENCE, so I have modified the code to exclude the patch when that macro
2345 is not defined.
2346
7102e136
PH
234755. Some experimental protocols are using DNS PTR records for new purposes. The
2348 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2349 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2350 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2351 CAN-2005-0021
7102e136 2352
3ca0ba97
PH
235356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2354
c2bcbe20
PH
235557. Double the size of the debug message buffer (to 2048) so that more of very
2356 long debug lines gets shown.
2357
18ce445d
PH
235858. The exicyclog utility now does better if the number of log files to keep
2359 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2360
1f5b4c3d
PH
236159. Two changes related to the smtp_active_hostname option:
2362
2363 (1) $smtp_active_hostname is now available as a variable.
2364 (2) The default for smtp_banner uses $smtp_active_hostname instead
2365 of $primary_hostname.
2366
b975ba52
PH
236760. The host_aton() function is supposed to be passed a string that is known
2368 to be a valid IP address. However, in the case of IPv6 addresses, it was
2369 not checking this. This is a hostage to fortune. Exim now panics and dies
2370 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2371 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2372 components; fortuitously, this particular loophole had already been fixed
2373 by change 4.50/55 above.
2374
2375 If there are any other similar loopholes, the new check in host_aton()
2376 itself should stop them being exploited. The report I received stated that
2377 data on the command line could provoke the exploit when Exim was running as
2378 exim, but did not say which command line option was involved. All I could
2379 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2380 running as the user.
ea3a6f44 2381 CAN-2005-0021
85b87bc2
PH
2382
238361. There was a buffer overflow vulnerability in the SPA authentication code
2384 (which came originally from the Samba project). I have added a test to the
2385 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2386 CAN-2005-0022
b975ba52 2387
17ffcae7
PH
238862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2389 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2390
d95f9fdb
PH
239163. The daemon start-up calls getloadavg() while still root for those OS that
2392 need the first call to be done as root, but it missed one case: when
2393 deliver_queue_load_max is set with deliver_drop_privilege. This is
2394 necessary for the benefit of the queue runner, because there is no re-exec
2395 when deliver_drop_privilege is set.
2396
86b8287f
PH
239764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2398 This has been fixed.
2399
60dc5e56
PH
240065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2401 was in use, was not putting the data itself into the right store pool;
2402 consequently, it could be overwritten for a subsequent message in the same
2403 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2404 the caching.)
2405
533244af
PH
240666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2407
a5a28604
PH
240867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2409 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2410 the function were treating the return as a boolean value, which happened to
2411 work because 0=false and not-0=true, but is not correct code.
2412
7e634d24
PH
241368. The host_aton() function was not handling scoped IPv6 addresses (those
2414 with, for example, "%eth0" on the end) correctly.
2415
3e11c26b
PH
241669. Fixed some compiler warnings in acl.c for the bitmaps specified with
2417 negated items (that is, ~something) in unsigned ints. Some compilers
2418 apparently mutter when there is no cast.
2419
6729cf78
PH
242070. If an address verification called from an ACL failed, and did not produce a
2421 user-specific message (i.e. there was only a "system" message), nothing was
2422 put in $acl_verify_message. In this situation, it now puts the system
2423 message there.
2424
00f00ca5
PH
242571. Change 4.23/11 added synchronization checking at the start of an SMTP
2426 session; change 4.31/43 added the unwanted input to the log line - except
2427 that it did not do this in the start of session case. It now does.
2428
c9bdd01c
PH
242972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2430 This is wrong and can cause the other end to generate a synchronization
2431 error if it is another Exim or anything else that does the synchronization
2432 check. A QUIT command is no longer sent after a timeout.
2433
d43194df
PH
243473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2435 during host lookups.
2436
fe5b5d0b
PH
243774. The defer_ok option of callout verification was not working if it was used
2438 when verifying addresses in header lines, that is, for this case:
2439
2440 verify = header_sender/callout=defer_ok
2441
76a2d7ba
PH
244275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2443 those file descriptors could be used for SMTP connections. If anything
2444 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2445 could be sent to the SMTP client, causing chaos. The daemon now opens
2446 stdin, stdout, and stderr to /dev/null when it puts itself into the
2447 background.
2448
244976. Arrange for output from Perl's "warn" command to be written to Exim's main
2450 log by default. The user can override this with suitable Perl magic.
2451
04f7d5b9
PH
245277. The use of log_message on a "discard" ACL verb, which is supposed to add to
2453 the log message when discard triggers, was not working for the DATA ACL or
2454 for the non-SMTP ACL.
2455
bc60667e
PH
245678. Error message wording change in sieve.c.
2457
bb6e88ff
PH
245879. If smtp_accept_max_per_host was set, the number of connections could be
2459 restricted to fewer than expected, because the daemon was trying to set up
2460 a new connection before checking whether the processes handling previous
2461 connections had finished. The check for completed processes is now done
2462 earlier. On busy systems, this bug wouldn't be noticed because something
2463 else would have woken the daemon, and it would have reaped the completed
2464 process earlier.
2465
1e70f85b
PH
246680. If a message was submitted locally by a user whose login name contained one
2467 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2468 It caused a spool format error. I have fixed the spool reading code. A
2469 related problem was that the "from" clause in the Received: line became
2470 illegal because of the space(s). It is now covered by ${quote_local_part.
2471
247281. Included the latest eximstats from Steve (adds average sizes to HTML Top
2473 tables).
2474
4e01f9d6
PH
247582. Updated OS/Makefile-AIX as per message from Mike Meredith.
2476
1ee1cef2
PH
247783. Patch from Sieve maintainer to fix unterminated string problem in
2478 "vacation" handling.
2479
6e2b4ccc
PH
248084. Some minor changes to the Linux configuration files to help with other
2481 OS variants using glibc.
2482
8e669ac1
PH
248385. One more patch for Sieve to update vacation handling to latest spec.
2484
495ae4b0 2485
bbe902f0
PH
2486----------------------------------------------------
2487See the note above about the 4.44 and 4.50 releases.
2488----------------------------------------------------
2489
2490
2491Exim version 4.44
2492-----------------
2493
2494 1. Change 4.43/35 introduced a bug that caused file counts to be
2495 incorrectly computed when quota_filecount was set in an appendfile
2496 transport
2497
2498 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2499 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2500 place.
2501
2502 3. Give more explanation in the error message when the command for a transport
2503 filter fails to execute.
2504
2505 4. There are several places where Exim runs a non-Exim command in a
2506 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2507 was being done only for the command run by the queryprogram router. It is
2508 now done for all such subprocesses. The other cases are: ${run, transport
2509 filters, and the commands run by the lmtp and pipe transports.
2510
2511 5. Some older OS have a limit of 256 on the maximum number of file
2512 descriptors. Exim was using setrlimit() to set 1000 as a large value
2513 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2514 systems. I've change it so that if it can't get 1000, it tries for 256.
2515
2516 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2517 was an oversight, and furthermore, ever since the addition of extra
2518 controls (e.g. 4.43/32), the checks on when to allow different forms of
2519 "control" were broken. There should now be diagnostics for all cases when a
2520 control that does not make sense is encountered.
2521
2522 7. $recipients is now available in the predata ACL (oversight).
2523
2524 8. Tidy the search cache before the fork to do a delivery from a message
2525 received from the command line. Otherwise the child will trigger a lookup
2526 failure and thereby defer the delivery if it tries to use (for example) a
2527 cached ldap connection that the parent has called unbind on.
2528
2529 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2530 of $address_data from the recipient verification was clobbered by the
2531 sender verification.
2532
253310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2534 was its contents. (It was OK if the option was not defined at all.)
2535
253611. A "Completed" log line is now written for messages that are removed from
2537 the spool by the -Mrm option.
2538
253912. $host_address is now set to the target address during the checking of
2540 ignore_target_hosts.
2541
254213. When checking ignore_target_hosts for an ipliteral router, no host name was
2543 being passed; this would have caused $sender_host_name to have been used if
2544 matching the list had actually called for a host name (not very likely,
2545 since this list is usually IP addresses). A host name is now passed as
2546 "[x.x.x.x]".
2547
254814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2549 code that specifies a non-restarting handler (typically sigaction() in
2550 modern systems) in an attempt to fix a rare and obscure crash bug.
2551
255215. Narrowed the window for a race in the daemon that could cause it to ignore
2553 SIGCHLD signals. This is not a major problem, because they are used only to
2554 wake it up if nothing else does.
2555
255616. A malformed maildirsize file could cause Exim to calculate negative values
2557 for the mailbox size or file count. Odd effects could occur as a result.
2558 The maildirsize information is now recalculated if the size or filecount
2559 end up negative.
2560
256117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2562 support for a long time. Removed HAVE_SYS_VFS_H.
2563
ea3a6f44 256418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2565
256619. Allow an empty sender to be matched against a lookup in an address list.
2567 Previously the only cases considered were a regular expression, or an
2568 empty pattern.
2569
257020. Exim went into a mad DNS lookup loop when doing a callout where the
2571 host was specified on the transport, if the DNS lookup yielded more than
2572 one IP address.
2573
ea3a6f44
NM
257421. The RFC2047 encoding function was originally intended for short strings
2575 such as real names; it was not keeping to the 75-character limit for
2576 encoded words that the RFC imposes. It now respects the limit, and
2577 generates multiple encoded words if necessary. To be on the safe side, I
2578 have increased the buffer size for the ${rfc2047: expansion operator from
2579 1024 to 2048 bytes.
bbe902f0 2580
ea3a6f44
NM
258122. Failure to deliver a bounce message always caused it to be frozen, even if
2582 there was an errors_to setting on the router. The errors_to setting is now
2583 respected.
bbe902f0
PH
2584
258523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2586 canonical form (fully expanded) before being placed in
2587 $sender_host_address.
2588
258924. Updated eximstats to version 1.33
2590
ea3a6f44
NM
259125. Include certificate and key file names in error message when GnuTLS fails
2592 to set them up, because the GnuTLS error message doesn't include the name
2593 of the failing file when there is a problem reading it.
bbe902f0
PH
2594
259526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2596 As per change 25.
bbe902f0 2597
ea3a6f44
NM
259827. Reset the locale to "C" after calling embedded Perl, in case it was changed
2599 (this can affect the format of dates).
bbe902f0 2600
ea3a6f44
NM
260128. exim_tidydb, when checking for the continued existence of a message for
2602 which it has found a message-specific retry record, was not finding
2603 messages that were in split spool directories. Consequently, it was
2604 deleting retry records that should have stayed in existence.
bbe902f0
PH
2605
260629. eximstats updated to version 1.35
2607 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2608 1.35 - bugfix such that pie charts by volume are generated correctly
2609
ea3a6f44
NM
261030. The SPA authentication driver was not abandoning authentication and moving
2611 on to the next authenticator when an expansion was forced to fail,
2612 contradicting the general specification for all authenticators. Instead it
2613 was generating a temporary error. It now behaves as specified.
bbe902f0 2614
ea3a6f44
NM
261531. The default ordering of permitted cipher suites for GnuTLS was pessimal
2616 (the order specifies the preference for clients). The order is now AES256,
2617 AES128, 3DES, ARCFOUR128.
bbe902f0 2618
ea3a6f44
NM
261931. Small patch to Sieve code - explicitly set From: when generating an
2620 autoreply.
bbe902f0 2621
ea3a6f44
NM
262232. Exim crashed if a remote delivery caused a very long error message to be
2623 recorded - for instance if somebody sent an entire SpamAssassin report back
2624 as a large number of 550 error lines. This bug was coincidentally fixed by
2625 increasing the size of one of Exim's internal buffers (big_buffer) that
2626 happened as part of the Exiscan merge. However, to be on the safe side, I
2627 have made the code more robust (and fixed the comments that describe what
2628 is going on).
bbe902f0 2629
ea3a6f44
NM
263033. Some experimental protocols are using DNS PTR records for new purposes. The
2631 keys for these records are domain names, not reversed IP addresses. The
2632 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2633 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2634 CAN-2005-0021
2635
ea3a6f44
NM
263634. The host_aton() function is supposed to be passed a string that is known
2637 to be a valid IP address. However, in the case of IPv6 addresses, it was
2638 not checking this. This is a hostage to fortune. Exim now panics and dies
2639 if the condition is not met. A case was found where this could be provoked
2640 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2641 components; fortuitously, this particular loophole had already been fixed
2642 by change 4.50/55 or 4.44/33 above.
2643
2644 If there are any other similar loopholes, the new check in host_aton()
2645 itself should stop them being exploited. The report I received stated that
2646 data on the command line could provoke the exploit when Exim was running as
2647 exim, but did not say which command line option was involved. All I could
2648 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2649 running as the user.
bbe902f0
PH
2650 CAN-2005-0021
2651
ea3a6f44
NM
265235. There was a buffer overflow vulnerability in the SPA authentication code
2653 (which came originally from the Samba project). I have added a test to the
2654 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2655 CAN-2005-0022
2656
ea3a6f44
NM
265736. The daemon start-up calls getloadavg() while still root for those OS that
2658 need the first call to be done as root, but it missed one case: when
2659 deliver_queue_load_max is set with deliver_drop_privilege. This is
2660 necessary for the benefit of the queue runner, because there is no re-exec
2661 when deliver_drop_privilege is set.
bbe902f0 2662
ea3a6f44
NM
266337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2664 was in use, was not putting the data itself into the right store pool;
2665 consequently, it could be overwritten for a subsequent message in the same
2666 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2667 the caching.)
bbe902f0 2668
ea3a6f44
NM
266938. Sometimes the final signoff response after QUIT could fail to get
2670 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2671 < 0 before doing a fflush(). This bug looks as though it goes back to the
2672 introduction of TLS in release 3.20, but "sometimes" must have been rare
2673 because the tests only now provoked it.
bbe902f0
PH
2674
2675
495ae4b0
PH
2676Exim version 4.43
2677-----------------
2678
2679 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2680 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2681 Now it returns an integer. A number of calls were still expecting a T/F
2682 return. Fortuitously, in all cases, the tests worked in OK situations,
2683 which is the norm. However, things would have gone wrong on any write
2684 failures on the smtp file descriptor. This function is used when sending
2685 messages over SMTP and also when doing verify callouts.
2686
2687 2. When Exim is called to do synchronous delivery of a locally submitted
2688 message (the -odf or -odi options), it no longer closes stderr before doing
2689 the delivery.
2690
2691 3. Implemented the mua_wrapper option.
2692
2693 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2694
2695 5. Implemented the functions header_remove(), header_testname(),
2696 header_add_at_position(), and receive_remove_recipient(), and exported them
2697 to local_scan().
2698
2699 6. If an ACL "warn" statement specified the addition of headers, Exim already
2700 inserted X-ACL-Warn: at the start if there was no header name. However, it
2701 was not making this test for the second and subsequent header lines if
2702 there were newlines in the string. This meant that an invalid header could
2703 be inserted if Exim was badly configured.
2704
2705 7. Allow an ACL "warn" statement to add header lines at the start or after all
2706 the Received: headers, as well as at the end.
2707
2708 8. Added the rcpt_4xx retry error code.
2709
2710 9. Added postmaster_mailfrom=xxx to callout verification option.
2711
271210. Added mailfrom=xxxx to the callout verification option, for verify=
2713 header_sender only.
2714
271511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2716 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2717
271812. Inserted some casts to stop certain compilers warning when using pointer
2719 differences as field lengths or precisions in printf-type calls (mostly
2720 affecting debugging statements).
2721
272213. Added optional readline() support for -be (dynamically loaded).
2723
272414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2725 same clock tick as a message's arrival, so that its received time was the
2726 same as the "first fail" time on the retry record, and that message
2727 remained on the queue past the ultimate address timeout, every queue runner
2728 would try a delivery (because it was past the ultimate address timeout) but
2729 after another failure, the ultimate address timeout, which should have then
2730 bounced the address, did not kick in. This was a "< instead of <=" error;
2731 in most cases the first failure would have been in the next clock tick
2732 after the received time, and all would be well.
2733
273415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2735 being recognized when the domain list was tested by the match_domain
2736 condition in an expansion string.
2737
273816. Added the ${str2b64: operator.
2739
274017. Exim was always calling setrlimit() to set a large limit for the number of
2741 processes, without checking whether the existing limit was already
2742 adequate. (It did check for the limit on file descriptors.) Furthermore,
2743 errors from getrlimit() and setrlimit() were being ignored. Now they are
2744 logged to the main and panic logs, but Exim does carry on, to try to do its
2745 job under whatever limits there are.
2746
274718. Imported PCRE 5.0.
2748
274919. Trivial typo in log message " temporarily refused connection" (the leading
2750 space).
2751
275220. If the log selector return_path_on_delivery was set and an address was
2753 redirected to /dev/null, the delivery process crashed because it assumed
2754 that a return path would always be set for a "successful" delivery. In this
2755 case, the whole delivery is bypassed as an optimization, and therefore no
2756 return path is set.
2757
275821. Internal re-arrangement: the function for sending a challenge and reading
2759 a response while authentication was assuming a zero-terminated challenge
2760 string. It's now changed to take a pointer and a length, to allow for
2761 binary data in such strings.
2762
276322. Added the cyrus_sasl authenticator (code supplied by MBM).
2764
276523. Exim was not respecting finduser_retries when seeking the login of the
2766 uid under which it was called; it was always trying 10 times. (The default
2767 setting of finduser_retries is zero.) Also, it was sleeping after the final
2768 failure, which is pointless.
2769
277024. Implemented tls_on_connect_ports.
2771
277225. Implemented acl_smtp_predata.
2773
277426. If the domain in control=submission is set empty, Exim assumes that the
2775 authenticated id is a complete email address when it generates From: or
2776 Sender: header lines.
2777
277827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2779 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2780 chown and chgrp in /bin and hostname in /usr/bin.
2781
278228. Exim was keeping the "process log" file open after each use, just as it
2783 does for the main log. This opens the possibility of it remaining open for
2784 long periods when the USR1 signal hits a daemon. Occasional processlog
2785 errors were reported, that could have been caused by this. Anyway, it seems
2786 much more sensible not to leave this file open at all, so that is what now
2787 happens.
2788
278929. The long-running daemon process does not normally write to the log once it
2790 has entered its main loop, and it closes the log before doing so. This is
2791 so that log files can straightforwardly be renamed and moved. However,
2792 there are a couple of unusual error situations where the daemon does write
2793 log entries, and I had neglected to close the log afterwards.
2794
279530. The text of an SMTP error response that was received during a remote
2796 delivery was being truncated at 512 bytes. This is too short for some of
2797 the long messages that one sometimes sees. I've increased the limit to
2798 1024.
2799
280031. It is now possible to make retry rules that apply only when a message has a
2801 specific sender, in particular, an empty sender.
2802
280332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2804 it possible to be selective about when SMTP synchronization is enforced.
2805
280633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2807
280832. Implemented hosts_connection_nolog.
2809
281033. Added an ACL for QUIT.
2811
281234. Setting "delay_warning=" to disable warnings was not working; it gave a
2813 syntax error.
2814
281535. Added mailbox_size and mailbox_filecount to appendfile.
2816
281736. Added control = no_multiline_responses to ACLs.
2818
281937. There was a bug in the logic of the code that waits for the clock to tick
2820 in the case where the clock went backwards by a substantial amount such
2821 that the microsecond fraction of "now" was more than the microsecond
2822 fraction of "then" (but the whole seconds number was less).
2823
282438. Added support for the libradius Radius client library this is found on
2825 FreeBSD (previously only the radiusclient library was supported).
2826
2827
2828Exim version 4.42
2829-----------------
2830
2831 1. When certain lookups returned multiple values in the form name=value, the
2832 quoting of the values was not always being done properly. Specifically:
2833 (a) If the value started with a double quote, but contained no whitespace,
2834 it was not quoted.
2835 (b) If the value contained whitespace other than a space character (i.e.
2836 tabs or newlines or carriage returns) it was not quoted.
2837 This fix has been applied to the mysql and pgsql lookups by writing a
2838 separate quoting function and calling it from the lookup code. The fix
2839 should probably also be applied to nisplus, ibase and oracle lookups, but
2840 since I cannot test any of those, I have not disturbed their existing code.
2841
2842 2. A hit in the callout cache for a specific address caused a log line with no
2843 reason for rejecting RCPT. Now it says "Previous (cached) callout
2844 verification failure".
2845
2846 3. There was an off-by-one bug in the queryprogram router. An over-long
2847 return line was truncated at 256 instead of 255 characters, thereby
2848 overflowing its buffer with the terminating zero. As well as fixing this, I
2849 have increased the buffer size to 1024 (and made a note to document this).
2850
2851 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2852 when Exim is waiting for an SMTP response from a remote server, Exim
2853 restarts its select() call on the socket, thereby resetting its timeout.
2854 This is not a problem when such interrupts are rare. Somebody set up a cron
2855 job to run exiwhat every 2 minutes, which is less than the normal select()
2856 timeout (5 or 10 minutes). This meant that the select() timeout never
2857 kicked in because it was always reset. I have fixed this by comparing the
2858 time when an interrupt arrives with the time at the start of the first call
2859 to select(). If more time than the timeout has elapsed, the interrupt is
2860 treated as a timeout.
2861
2862 5. Some internal re-factoring in preparation for the addition of Sieve
2863 extensions (by MH). In particular, the "personal" test is moved to a
2864 separate function, and given an option for scanning Cc: and Bcc: (which is
2865 not set for Exim filters).
2866
2867 6. When Exim created an email address using the login of the caller as the
2868 local part (e.g. when creating a From: or Sender: header line), it was not
2869 quoting the local part when it contained special characters such as @.
2870
2871 7. Installed new OpenBSD configuration files.
2872
2873 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2874 try to make them clearer.
2875
2876 9. Callout options, other than the timeout value, were being ignored when
2877 verifying sender addresses in header lines. For example, when using
2878
2879 verify = header_sender/callout=no_cache
2880
2881 the cache was (incorrectly) being used.
2882
288310. Added a missing instance of ${EXE} to the exim_install script; this affects
2884 only the Cygwin environment.
2885
288611. When return_path_on_delivery was set as a log selector, if different remote
2887 addresses in the same message used different return paths and parallel
2888 remote delivery occurred, the wrong values would sometimes be logged.
2889 (Whenever a remote delivery process finished, the return path value from
2890 the most recently started remote delivery process was logged.)
2891
289212. RFC 3848 specifies standard names for the "with" phrase in Received: header
2893 lines when AUTH and/or TLS are in use. This is the "received protocol"
2894 field. Exim used to use "asmtp" for authenticated SMTP, without any
2895 indication (in the protocol name) for TLS use. Now it follows the RFC and
2896 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2897 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2898 names appear in log lines as well as in Received: header lines.
2899
290013. Installed MH's patches for Sieve to add the "copy" and "vacation"
2901 extensions, and comparison tests, and to fix some bugs.
2902
290314. Changes to the "personal" filter test:
2904
2905 (1) The test was buggy in that it was just doing the equivalent of
2906 "contains" tests on header lines. For example, if a user's address was
2907 anne@some.where, the "personal" test would incorrectly be true for
2908
2909 To: susanne@some.where
2910
2911 This test is now done by extracting each address from the header in turn,
2912 and checking the entire address. Other tests that are part of "personal"
2913 are now done using regular expressions (for example, to check local parts
2914 of addresses in From: header lines).
2915
2916 (2) The list of non-personal local parts in From: addresses has been
2917 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2918 taken from the Sieve specification recommendations.
2919
2920 (3) If the message contains any header line starting with "List-" it is
2921 treated as non-personal.
2922
2923 (4) The test for "circular" in the Subject: header line has been removed
2924 because it now seems ill-conceived.
2925
292615. Minor typos in src/EDITME comments corrected.
2927
292816. Installed latest exipick from John Jetmore.
2929
293017. If headers_add on a router specified a text string that was too long for
2931 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2932 of string_sprintf() is now avoided.
2933
293418. $message_body_size was not set (it was always zero) when running the DATA
2935 ACL and the local_scan() function.
2936
293719. For the "mail" command in an Exim filter, no default was being set for
2938 the once_repeat time, causing a random time value to be used if "once" was
2939 specified. (If the value happened to be <= 0, no repeat happened.) The
2940 default is now 0s, meaning "never repeat". The "vacation" command was OK
2941 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2942 (I found it when inspecting the code).
2943
294420. There is now an overall timeout for performing a callout verification. It
2945 defaults to 4 times the callout timeout, which applies to individual SMTP
2946 commands during the callout. The overall timeout applies when there is more
2947 than one host that can be tried. The timeout is checked before trying the
2948 next host. This prevents very long delays if there are a large number of
2949 hosts and all are timing out (e.g. when the network connections are timing
2950 out). The value of the overall timeout can be changed by specifying an
2951 additional sub-option for "callout", called "maxwait". For example:
2952
2953 verify = sender/callout=5s,maxwait=20s
2954
295521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2956 to the end before writing, but this should make it even safer).
2957
295822. Exim was forgetting that it had advertised PIPELINING for the second and
2959 subsequent messages on an SMTP connection. It was also not resetting its
2960 memory on STARTTLS and an internal HELO.
2961
296223. When Exim logs an SMTP synchronization error within a session, it now
2963 records whether PIPELINING has been advertised or not.
2964
296524. Added 3 instances of "(long int)" casts to time_t variables that were being
2966 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2967 rather than long int.
2968
296925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2970
297126. Added the never_mail option to autoreply.
2972
2973
2974Exim version 4.41
2975-----------------
2976
2977 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2978 crash if the getsockname() call failed; this can happen if a connection is
2979 closed very soon after it is established. The problem was simply in the
2980 order in which certain operations were done, causing Exim to try to write
2981 to the SMTP stream before it had set up the file descriptor. The bug has
2982 been fixed by making things happen in the correct order.
2983
2984
2985Exim version 4.40
2986-----------------
2987
2988 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2989 before the connection was closed, thus losing the rejection response.
2990
2991 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2992 some early Solaris releases, but causes trouble in current releases where
2993 socklen_t is defined.
2994
2995 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2996 always exist.
2997
2998 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2999 configured.
3000
3001 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3002 that releasing the top of it at the end releases what was used for sub-
3003 expansions (unless the block got too big). However, discard this block if
3004 the first thing is a variable or header, so that we can use its block when
3005 it is dynamic (useful for very large $message_headers, for example).
3006
3007 6. Lookups now cache *every* query, not just the most recent. A new, separate
3008 store pool is used for this. It can be recovered when all lookup caches are
3009 flushed. Lookups now release memory at the end of their result strings.
3010 This has involved some general refactoring of the lookup sources.
3011
3012 7. Some code has been added to the store_xxx() functions to reduce the amount
3013 of flapping under certain conditions.
3014
3015 8. log_incoming_interface used to affect only the <= reception log lines. Now
3016 it causes the local interface and port to be added to several more SMTP log
3017 lines, for example "SMTP connection from", and rejection lines.
3018
3019 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3020
302110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3022
302311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3024 could be overwritten at the end of the current message (or the start of a
3025 new message if it was set in a HELO ACL). The value is now preserved for
3026 the duration of the SMTP connection.
3027
302812. If a transport had a headers_rewrite setting, and a matching header line
3029 contained an unqualified address, that address was qualified, even if it
3030 did not match any rewriting rules. The underlying bug was that the values
3031 of the flags that permit the existence of unqualified sender and recipient
3032 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3033 non-local messages, and by -bnq for local messages) were not being
3034 preserved with the message after it was received.
3035
303613. When Exim was logging an SMTP synchronization error, it could sometimes log
3037 "next input=" as part of the text comprising the host identity instead of
3038 the correct text. The code was using the same buffer for two different
3039 strings. However, depending on which order the printing function evaluated
3040 its arguments, the bug did not always show up. Under Linux, for example, my
3041 test suite worked just fine.
3042
304314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3044 doesn't work with some older versions of Perl. It has been changed to "my",
3045 which in any case is probably the better facility to use.
3046
304715. A really picky compiler found some instances of statements for creating
3048 error messages that either had too many or two few arguments for the format
3049 string.
3050
305116. The size of the buffer for calls to the DNS resolver has been increased
3052 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3053 for addresses that have a lot of PTR records. This alleviates a problem; it
3054 does not fully solve it.
3055
305617. A dnsdb lookup for PTR records that receives more data than will fit in the
3057 buffer now truncates the list and logs the incident, which is the same
3058 action as happens when Exim is looking up a host name and its aliases.
3059 Previously in this situation something unpredictable would happen;
3060 sometimes it was "internal error: store_reset failed".
3061
306218. If a server dropped the connection unexpectedly when an Exim client was
3063 using GnuTLS and trying to read a response, the client delivery process
3064 crashed while trying to generate an error log message.
3065
306619. If a "warn" verb in an ACL added multiple headers to a message in a single
3067 string, for example:
3068
3069 warn message = H1: something\nH2: something
3070
3071 the text was added as a single header line from Exim's point of view
3072 though it ended up OK in the delivered message. However, searching for the
3073 second and subsequent header lines using $h_h2: did not work. This has been
3074 fixed. Similarly, if a system filter added multiple headers in this way,
3075 the routers could not see them.
3076
307720. Expanded the error message when iplsearch is called with an invalid key to
3078 suggest using net-iplsearch in a host list.
3079
308021. When running tests using -bh, any delays imposed by "delay" modifiers in
3081 ACLs are no longer actually imposed (and a message to that effect is
3082 output).
3083
308422. If a "gecos" field in a passwd entry contained escaped characters, in
3085 particular, if it contained a \" sequence, Exim got it wrong when building
3086 a From: or a Sender: header from that name. A second bug also caused
3087 incorrect handling when an unquoted " was present following a character
3088 that needed quoting.
3089
309023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3091 was not being matched caselessly.
3092
309324. Arranged for all hyphens in the exim.8 source to be escaped with
3094 backslashes.
3095
309625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3097 properly. Recipient callout cache records were still being keyed to include
3098 the sender, even when use_sender was set false. This led to far more
3099 callouts that were necessary. The sender is no longer included in the key
3100 when use_sender is false.
3101
310226. Added "control = submission" modifier to ACLs.
3103
310427. Added the ${base62d: operator to decode base 62 numbers.
3105
310628. dnsdb lookups can now access SRV records.
3107
310829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3109 the configuration file.
3110
311130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3112 (-v) mode. This makes the output for a verbose queue run more intelligible.
3113
311431. Added a use_postmaster feature to recipient callouts.
3115
311632. Added the $body_zerocount variable, containing the number of binary zero
3117 bytes in the message body.
3118
311933. The time of last modification of the "new" subdirectory is now used as the
3120 "mailbox time last read" when there is a quota error for a maildir
3121 delivery.
3122
312334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3124
312535. Added +ignore_unknown as a special item in host lists.
3126
312736. Code for decoding IPv6 addresses in host lists is now included, even if
3128 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3129 address was recognized as an IP address, but was then not correctly decoded
3130 into binary, causing unexpected and incorrect effects when compared with
3131 another IP address.
3132
3133
3134Exim version 4.34
3135-----------------
3136
3137 1. Very minor rewording of debugging text in manualroute to say "list of
3138 hosts" instead of "hostlist".
3139
3140 2. If verify=header_syntax was set, and a header line with an unqualified
3141 address (no domain) and a large number of spaces between the end of the
3142 name and the colon was received, the reception process suffered a buffer
3143 overflow, and (when I tested it) crashed. This was caused by some obsolete
3144 code that should have been removed. The fix is to remove it!
3145
3146 3. When running in the test harness, delay a bit after writing a bounce
3147 message to get a bit more predictability in the log output.
3148
3149 4. Added a call to search_tidyup() just before forking a reception process. In
3150 theory, someone could use a lookup in the expansion of smtp_accept_max_
3151 per_host which, without the tidyup, could leave open a database connection.
3152
3153 5. Added the variables $recipient_data and $sender_data which get set from a
3154 lookup success in an ACL "recipients" or "senders" condition, or a router
3155 "senders" option, similar to $domain_data and $local_part_data.
3156
3157 6. Moved the writing of debug_print from before to after the "senders" test
3158 for routers.
3159
3160 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3161 problems for message scanning, either using a data ACL, or using
3162 local_scan() because the Received: header was not generated till after they
3163 were called (in order to set the time as the time of reception completion).
3164 I have revised the way this works. The header is now generated after the
3165 body is received, but before the ACL or local_scan() are called. After they
3166 are run, the timestamp in the header is updated.
3167
3168
3169Exim version 4.33
3170-----------------
3171
3172 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3173 before starting a queue runner without re-exec. This happened only when
3174 deliver_drop_privilege was set or when the Exim user was set to root. The
3175 effect of the bug was that timeouts during subsequent deliveries caused
3176 crashes instead of being properly handled. The handler is now left at its
3177 default (and expected) setting.
3178
3179 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3180 message, again when deliver_drop_privilege is set or Exim is run as root.
3181 The bug described in (1) was not present in this case, but the tidying up
3182 of the other signals was missing. I have made the two cases consistent.
3183
3184 3. The ignore_target_hosts setting on a manualroute router was being ignored
3185 for hosts that were looked up using the /MX notation.
3186
3187 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3188 in domain lists.
3189
3190 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3191 operated on the sender address. After changing the $sender_address to <>
3192 for the sender address verify, Exim was re-instated it as the original
3193 (before rewriting) address, but remembering that it had rewritten it, so it
3194 wasn't rewriting it again. This bug also had the effect of breaking the
3195 sender address verification caching when the sender address was rewritten.
3196
3197 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3198 This has been changed so that if the ip literal address matches
3199 ignore_target_hosts, the router declines.
3200
3201 7. Added expansion conditions match_domain, match_address, and match_local_
3202 part (NOT match_host).
3203
3204 8. The placeholder for the Received: header didn't have a length field set.
3205
3206 9. Added code to Exim itself and to exim_lock to test for a specific race
3207 condition that could lead to file corruption when using MBX delivery. The
3208 issue is with the lockfile that is created in /tmp. If this file is removed
3209 after a process has opened it but before that process has acquired a lock,
3210 there is the potential for a second process to recreate the file and also
3211 acquire a lock. This could lead to two Exim processes writing to the file
3212 at the same time. The added code performs the same test as UW imapd; it
3213 checks after acquiring the lock that its file descriptor still refers to
3214 the same named file.
3215
321610. The buffer for building added header lines was of fixed size, 8192 bytes.
3217 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3218 when Exim is built.
3219
322011. Added the smtp_active_hostname option. If used, this will typically be made
3221 to depend on the incoming interface address. Because $interface_address is
3222 not set up until the daemon has forked a reception process, error responses
3223 that can happen earlier (such as "too many connections") no longer contain
3224 a host name.
3225
322612. If an expansion in a condition on a "warn" statement fails because a lookup
3227 defers, the "warn" statement is abandoned, and the next ACL statement is
3228 processed. Previously this caused the whole ACL to be aborted.
3229
323013. Added the iplsearch lookup type.
3231
323214. Added ident_timeout as a log selector.
3233
323415. Added tls_certificate_verified as a log selector.
3235
323616. Added a global option tls_require_ciphers (compare the smtp transport
3237 option of the same name). This controls incoming TLS connections.
3238
323917. I finally figured out how to make tls_require_ciphers do a similar thing
3240 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3241 before starting the TLS session.
3242
324318. Tabs are now shown as \t in -bP output.
3244
324519. If the log selector return_path_on_delivery was set, Exim crashed when
3246 bouncing a message because it had too many Received: header lines.
3247
324820. If two routers both had headers_remove settings, and the first one included
3249 a superfluous trailing colon, the final name in the first list and the
3250 first name in the second list were incorrectly joined into one item (with a
3251 colon in the middle).
3252
3253
3254Exim version 4.32
3255-----------------
3256
3257 1. Added -C and -D options to the exinext utility, mainly to make it easier
3258 to include in the automated testing, but these could be helpful when
3259 multiple configurations are in use.
3260
3261 2. The exinext utility was not formatting the output nicely when there was
3262 an alternate port involved in the retry record key, nor when there was a
3263 message id as well (for retries that were specific to a specific message
3264 and a specific host). It was also confused by IPv6 addresses, because of
3265 the additional colons they contain. I have fixed the IPv4 problem, and
3266 patched it up to do a reasonable job for IPv6.
3267
3268 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3269 delivery, the log line now contains "pipelined" if PIPELINING was used.
3270
3271 4. An SMTP transport process used to panic and die if the bind() call to set
3272 an explicit outgoing interface failed. This has been changed; it is now
3273 treated in the same way as a connect() failure.
3274
3275 5. A reference to $sender_host_name in the part of a conditional expansion
3276 that was being skipped was still causing a DNS lookup. This no longer
3277 occurs.
3278
3279 6. The def: expansion condition was not recognizing references to header lines
3280 that used bh_ and bheader_.
3281
3282 7. Added the _cache feature to named lists.
3283
3284 8. The code for checking quota_filecount in the appendfile transport was
3285 allowing one more file than it should have been.
3286
3287 9. For compatibility with Sendmail, the command line option
3288
3289 -prval:sval
3290
3291 is equivalent to
3292
3293 -oMr rval -oMs sval
3294
3295 and sets the incoming protocol and host name (for trusted callers). The
3296 host name and its colon can be omitted when only the protocol is to be set.
3297 Note the Exim already has two private options, -pd and -ps, that refer to
3298 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3299 "s", but I don't think that's a major issue.
3300
330110. A number of refactoring changes to the code, none of which should affect
3302 Exim's behaviour:
3303
3304 (a) The number of logging options was getting close to filling up the
3305 32-bit word that was used as a bit map. I have split them into two classes:
3306 those that are passed in the argument to log_write(), and those that are
3307 only ever tested independently outside of that function. These are now in
3308 separate 32-bit words, so there is plenty of room for expansion again.
3309 There is no change in the user interface or the logging behaviour.
3310
3311 (b) When building, for example, log lines, the code previously used a
3312 macro that called string_cat() twice, in order to add two strings. This is
3313 not really sufficiently general. Furthermore, there was one instance where
3314 it was actually wrong because one of the argument was used twice, and in
3315 one call a function was used. (As it happened, calling the function twice
3316 did not affect the overall behaviour.) The macro has been replaced by a
3317 function that can join an arbitrary number of extra strings onto a growing
3318 string.
3319
3320 (c) The code for expansion conditions now uses a table and a binary chop
3321 instead of a serial search (which was left over from when there were very
3322 few conditions). Also, it now recognizes conditions like "pam" even when
3323 the relevant support is not compiled in: a suitably worded error message is
3324 given if an attempt is made to use such a condition.
3325
332611. Added ${time_interval:xxxxx}.
3327
332812. A bug was causing one of the ddress fields not to be passed back correctly
3329 from remote delivery subprocesses. The field in question was not being
3330 subsequently used, so this caused to problems in practice.
3331
333213. Added new log selectors queue_time and deliver_time.
3333
333414. Might have fixed a bug in maildirsizefile handling that threw up
3335 "unexpected character" debug warnings, and recalculated the data
3336 unnecessarily. In any case, I expanded the warning message to give more
3337 information.
3338
333915. Added the message "Restricted characters in address" to the statements in
3340 the default ACL that block characters like @ and % in local parts.
3341
334216. Change 71 for release 4.31 proved to be much less benign that I imagined.
3343 Three changes have been made:
3344
3345 (a) There was a serious bug; a negative response to MAIL caused the whole
3346 recipient domain to be cached as invalid, thereby blocking all messages
3347 to all local parts at the same domain, from all senders. This bug has
3348 been fixed. The domain is no longer cached after a negative response to
3349 MAIL if the sender used is not empty.
3350
3351 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3352 been restored.
3353
3354 (c) A new callout option, "use_sender" has been added for people who want
3355 the modified behaviour.
3356
3357
3358Exim version 4.31
3359-----------------
3360
3361 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3362 Larry Rosenman.
3363
3364 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3365 indeed breaks things for older releases.
3366
3367 3. Added additional logging to the case where there is a problem reading data
3368 from a filter that is running in a subprocess using a pipe, in order to
3369 try to track down a specific problem.
3370
3371 4. Testing facility fudge: when running in the test harness and attempting
3372 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3373 getting "No route to host". Convert this to a timeout.
3374
3375 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3376 warning.
3377
3378 6. Some OS don't have socklen_t but use size_t instead. This affects the
3379 fifth argument of getsockopt() amongst other things. This is now
3380 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3381 can be set for individual OS. I have set it for SunOS5, OSF1, and
3382 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3383 some earlier ones do not.
3384
3385 7. Change 4.30/15 was not doing the test caselessly.
3386
3387 8. The standard form for an IPv6 address literal was being rejected by address
3388 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3389 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3390 this, as well as the form without the "IPv6" on the front (but only when
3391 address literals are enabled, of course).
3392
3393 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3394
339510. Exim crashed if a message with an empty sender address specified by -f
3396 encountered a router with an errors_to setting. This could be provoked only
3397 by a command such as
3398
3399 exim -f "" ...
3400
3401 where an empty string was supplied; "<>" did not hit this bug.
3402
340311. Installed PCRE release 4.5.
3404
340512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3406 remained set. It is now erased.
3407
340813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3409 times from message ids (which are base 36 rather than the normal 62).
3410
341114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3412 were being counted as actual protocol errors, and logged if the log
3413 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3414 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3415 and DATA following a set of rejected RCPTs do not count as protocol errors.
3416 In other words, Exim assumes they were pipelined, though this may not
3417 actually be the case. Of course, in all cases the client gets an
3418 appropriate error code.
3419
342015. If a lookup fails in an ACL condition, a message about the failure may
3421 be available; it is used if testing the ACL cannot continue, because most
3422 such messages specify what the cause of the deferral is. However, some
3423 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3424 that caused an old message to be retained and used if a later statement
3425 caused a defer, replacing the real cause of the deferral.
3426
342716. If an IP address had so many PTR records that the DNS lookup buffer
3428 was not large enough to hold them, Exim could crash while trying to process
3429 the truncated data. It now detects and logs this case.
3430
343117. Further to 4.21/58, another change has been made: if (and only if) the
3432 first line of a message (the first header line) ends with CRLF, a bare LF
3433 in a subsequent header line has a space inserted after it, so as not to
3434 terminate the header.
3435
343618. Refactoring: tidied an ugly bit of code in appendfile that copied data
3437 unnecessarily, used atoi() instead of strtol(), and didn't check the
3438 termination when getting file sizes from file names by regex.
3439
344019. Completely re-implemented the support for maildirsize files, in the light
3441 of a number of problems with the previous contributed implementation
3442 (4.30/29). In particular:
3443
3444 . If the quota is zero, the maildirsize file is maintained, but no quota is
3445 imposed.
3446
3447 . If the maildir directory does not exist, it is created before any attempt
3448 to write a maildirsize file.
3449
3450 . The quota value in the file is just a cache; if the quota is changed in
3451 the transport, the new value overrides.
3452
3453 . A regular expression is available for excluding directories from the
3454 count.
3455
345620. The autoreply transport checks the characters in options that define the
3457 message's headers; it allows continued headers, but it was checking with
3458 isspace() after an embedded newline instead of explicitly looking for a
3459 space or a tab.
3460
346121. If all the "regular" hosts to which an address was routed had passed their
3462 expiry times, and had not reached their retry times, the address was
3463 bounced, even if fallback hosts were defined. Now Exim should go on to try
3464 the fallback hosts.
3465
346622. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3467 equivalent code in the SMTP transport. Some hosts send humungous responses
3468 to HELO/EHLO, more than 1024 it seems.
3469
347023. Refactoring: code in filter.c used (void *) for "any old type" but this
3471 gives compiler warnings in some environments. I've now done it "properly",
3472 using a union.
3473
347424. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3475 (because of problems with the built-in one) was declared to return uschar *
3476 instead of char *, causing compiler failure.
3477
347825. Fixed a file descriptor leak when processing alias/forward files.
3479
348026. Fixed a minor format string issue in dbfn.c.
3481
348227. Typo in exim.c: ("dmbnz" for "dbmnz").
3483
348428. If a filter file refered to $h_xxx or $message_headers, and the headers
3485 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3486 become corrupted.
3487
348829. When a sender address is verified, it is cached, to save repeating the test
3489 when there is more than one recipient in a message. However, when the
3490 verification involves a callout, it is possible for different callout
3491 options to be set for different recipients. It is too complicated to keep
3492 track of this in the cache, so now Exim always runs a verification when a
3493 callout is required, relying on the callout cache for the optimization.
3494 The overhead is duplication of the address routing, but this should not be
3495 too great.
3496
349730. Fixed a bug in callout caching. If a RCPT command caused the sender address
3498 to be verified with callout=postmaster, and the main callout worked but the
3499 postmaster check failed, the verification correctly failed. However, if a
3500 subsequent RCPT command asked for sender verification *without* the
3501 postmaster check, incorrect caching caused this verification also to fail,
3502 incorrectly.
3503
350431. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3505 it was not caching the DNS options (qualify_single, search_parents) that
3506 were used when the lookup failed. A subsequent lookup with different
3507 options therefore always gave the same answer, though there were cases
3508 where it should not have. (Example: a "domains = !$mx_any" option on a
3509 dnslookup router: the "domains" option is always processed without any
3510 widening, but the router might have qualify_single set.) Now Exim uses the
3511 cached value only when the same options are set.
3512
351332. Added John Jetmore's "exipick" utility to the distribution.
3514
351533. GnuTLS: When an attempt to start a TLS session fails for any reason other
3516 than a timeout (e.g. a certificate is required, and is not provided), an
3517 Exim server now closes the connection immediately. Previously it waited for
3518 the client to close - but if the client is SSL, it seems that they each
3519 wait for each other, leading to a delay before one of them times out.
3520
352134: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3522 maintained 0.8.x compatibility because I don't think many are using it, and
3523 it is clearly obsolete.
3524
352535. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3526 transport.
3527
352836. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3529 client certificate was expired. A simple patch fixes this, though I don't
3530 understand the full logic of why the verify callback is called multiple
3531 times.
3532
353337. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3534 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3535 which causes problems with some clients (such as the Certicom SSL Plus
3536 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3537 disables the coutermeasure allowing Eudora to connect."
3538
353938. Exim was not checking that a write() to a log file succeeded. This could
3540 lead to Bad Things if a log got too big, in particular if it hit a file
3541 size limit. Exim now panics and dies if it cannot write to a log file, just
3542 as it does if it cannot open a log file.
3543
354439. Modified OS/Makefile-Linux so that it now contains
3545
3546 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3547
3548 The two -D definitions ensure that Exim is compiled with large file
3549 support, which makes it possible to handle log files that are bigger than
3550 2^31.
3551
355240. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3553 instance) a domain was checked against a named list that involved a lookup,
3554 causing $domain_data to be set, then another domain was checked against the
3555 same list, then the first domain was re-checked, the value of $domain_data
3556 after the final check could be wrong. In particular, if the second check
3557 failed, it could be set empty. This bug probably also applied to
3558 $localpart_data.
3559
356041. The strip_trailing_dot option was not being applied to the address given
3561 with the -f command-line option.
3562
356342. The code for reading a message's header from the spool was incrementing
3564 $received_count, but never initializing it. This meant that the value was
3565 incorrect (doubled) while delivering a message in the same process in which
3566 it was received. In the most common configuration of Exim, this never
3567 happens - a fresh exec is done - but it can happen when
3568 deliver_drop_privilege is set.
3569
357043. When Exim logs an SMTP synchronization error - client data sent too soon -
3571 it now includes up to 150 characters of the unexpected data in the log
3572 line.
3573
357444. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3575 and building data strings. The size of both of these buffers was 10 000