Add RCPT error text to unexpected DATA error.
[exim.git] / doc / doc-txt / ChangeLog
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2679d413 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.497 2007/03/21 15:10:39 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
PH
6Exim version 4.67
7-----------------
8
22ad45c9
MH
9MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
10 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
11 Jan Srzednicki.
12
b4ed4da0
PH
13PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
14 issue a MAIL command.
15
431b7361
PH
16PH/02 In an ACL statement such as
17
18 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
19
20 if a client was not listed at all, or was listed with a value other than
21 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
22 the condition was not true (as it should be), so access was not denied.
23 The bug was that the ! inversion was incorrectly passed on to the second
24 item. This has been fixed.
25
26PH/03 Added additional dnslists conditions == and =& which are different from
27 = and & when the dns lookup returns more than one IP address.
28
83da1223
PH
29PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
30 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
31
54fc8428
PH
32PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
33 FSYNC, which compiles an option called disable_fsync that allows for
34 bypassing fsync(). The documentation is heavily laced with warnings.
35
34c5e8dd
SC
36SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
37
bbe15da8
PH
38PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
39 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
40 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
41 including adding "make clean"; (3) Added -fPIC when compiling the test
42 dynamically loaded module, to get rid of a warning.
43
0e8a9471
MH
44MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
45 message fails, move_frozen_messages = true and ignore_bounce_errors_after
46 = 0s. The bug is otherwise harmless.
47
f0872424
PH
48PH/07 There was a bug in the dovecot authenticator such that the value of
49 $auth1 could be overwritten, and so not correctly preserved, after a
50 successful authentication. This usually meant that the value preserved by
51 the server_setid option was incorrect.
52
b01dd148
PH
53PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
54
6bf342e1
PH
55PH/09 Installed PCRE release 7.0.
56
273f34d0
PH
57PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
58 run for batched SMTP input. It is now run at the start of every message
59 in the batch. While fixing this I discovered that the process information
60 (output by running exiwhat) was not always getting set for -bs and -bS
61 input. This is fixed, and it now also says "batched" for BSMTP.
62
cf8b11a5
PH
63PH/11 Added control=no_pipelining.
64
41c7c167
PH
65PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
66 patch, slightly modified), and move the expansion of helo_data till after
67 the connection is made in the smtp transport (so it can use these
68 values).
69
9c57cbc0
PH
70PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
71
f3f065bb
PH
72PH/14 Added log_selector = +pid.
73
047bdd8c
PH
74PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
75
0ce9abe6
PH
76PH/16 Add ${if forany and ${if forall.
77
0e22dfd1
PH
78PH/17 Added dsn_from option to vary the From: line in DSNs.
79
4c590bd1
PH
80PH/18 Flush SMTP output before performing a callout, unless control =
81 no_callout_flush is set.
82
09945f1e
PH
83PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
84 was true (the default) a successful delivery failed to delete the retry
85 item, thus causing premature timeout of the address. The bug is now
86 fixed.
87
c51b8e75
PH
88PH/20 Added hosts_avoid_pipelining to the smtp transport.
89
e28326d8
PH
90PH/21 Long custom messages for fakedefer and fakereject are now split up
91 into multiline reponses in the same way that messages for "deny" and
92 other ACL rejections are.
93
75b1493f
PH
94PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
95 with slight modification.
96
7c5214ec
PH
97PH/23 Applied sieve patches from the maintainer "tracking the latest notify
98 draft, changing the syntax and factoring some duplicate code".
99
4311097e
PH
100PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
101 for deliveries of the second and subsequent messages over the same SMTP
102 connection.
103
29f89cad
PH
104PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
105 ${reduce, with only minor "tidies".
106
5e687460
SC
107SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
108
c3611384
PH
109PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
110 expansion side effects.
111
5a11a7b4
PH
112PH/27 When a message times out after an over-quota error from an Exim-imposed
113 quota, the bounce message says "mailbox is full". This message was not
114 being given when it was a system quota that was exceeded. It now should
115 be the same.
116
0e20aff9
MH
117MH/03 Made $recipients available in local_scan(). local_scan() already has
118 better access to the recipient list through recipients_list[], but
119 $recipients can be useful in postmaster-provided expansion strings.
120
ca86f471
PH
121PH/28 The $smtp_command and $smtp_command_argument variables were not correct
122 in the case of a MAIL command with additional options following the
123 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
124 were accidentally chopped off.
125
a14e5636
PH
126PH/29 SMTP synchronization checks are implemented when a command is read -
127 there is a check that no more input is waiting when there shouldn't be
128 any. However, for some commands, a delay in an ACL can mean that it is
129 some time before the response is written. In this time, more input might
130 arrive, invalidly. So now there are extra checks after an ACL has run for
131 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
132 pipelining has not been advertised.
133
ec95d1a6
PH
134PH/30 MH's patch to allow iscntrl() characters to be list separators.
135
42855d71
PH
136PH/31 Unlike :fail:, a custom message specified with :defer: was not being
137 returned in the SMTP response when smtp_return_error_details was false.
138 This has been fixed.
139
57c2c631
PH
140PH/32 Change the Dovecot authenticator to use read() and write() on the socket
141 instead of the C I/O that was originally supplied, because problems were
142 reported on Solaris.
143
58c01c94
PH
144PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
145 Exim which did not show up earlier: it was assuming that a call to
146 SSL_CTX_set_info_callback() might give an error value. In fact, there is
147 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
148 was a macro that became an assignment, so it seemed to work. This has
149 changed to a proper function call with a void return, hence the compile
150 error. Exim's code has been fixed.
151
dee5a20a
PH
152PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
153 cpus.
154
d2ee6114
PH
155PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
156
b2d5182b
PH
157PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
158
79749a79
PH
159PH/37 If a message is not accepted after it has had an id assigned (e.g.
160 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
161 "Completed" line in the log. When some messages of this type were
162 selected by exigrep, they were listed as "not completed". Others were
163 picked up by some special patterns. I have improved the selection
164 criteria to be more general.
79749a79 165
c456d9bb
PH
166PH/38 The host_find_failed option in the manualroute router can now be set
167 to "ignore", to completely ignore a host whose IP address cannot be
168 found. If all hosts are ignored, the behaviour is controlled by the new
169 host_all_ignored option.
170
cd9868ec
PH
171PH/39 In a list of hosts for manualroute, if one item (either because of multi-
172 homing or because of multiple MX records with /mx) generated more than
173 one IP address, and the following item turned out to be the local host,
174 all the secondary addresses of the first item were incorrectly removed
175 from the list, along with the local host and any following hosts (which
176 is what is supposed to happen).
177
ebeaf996
PH
178PH/40 When Exim receives a message, it writes the login name, uid, and gid of
179 whoever called Exim into the -H file. In the case of the daemon it was
180 behaving confusingly. When first started, it used values for whoever
181 started the daemon, but after a SIGHUP it used the Exim user (because it
182 calls itself on a restart). I have changed the code so that it now always
183 uses the Exim user.
184
2679d413
PH
185PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
186 message are rejected with the same error (e.g. no authentication or bad
187 sender address), and a DATA command is nevertheless sent (as can happen
188 with PIPELINING or a stupid MUA), the error message that was given to the
189 RCPT commands is included in the rejection of the DATA command. This is
190 intended to be helpful for MUAs that show only the final error to their
191 users.
192
b4ed4da0 193
5dd1517f
PH
194Exim version 4.66
195-----------------
196
197PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
198 fixed by 4.65/MH/01 (is this a record?) are fixed:
199
200 (i) An empty string was always treated as zero by the numeric comparison
201 operators. This behaviour has been restored.
202
203 (ii) It is documented that the numeric comparison operators always treat
204 their arguments as decimal numbers. This was broken in that numbers
205 starting with 0 were being interpreted as octal.
206
207 While fixing these problems I realized that there was another issue that
208 hadn't been noticed. Values of message_size_limit (both the global option
209 and the transport option) were treated as octal if they started with 0.
210 The documentation was vague. These values are now always treated as
211 decimal, and I will make that clear in the documentation.
212
213
93cfa765
TK
214Exim version 4.65
215-----------------
216
217TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
218 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
219 versions. (#438)
220
d6066548
MH
221MH/01 Don't check that the operands of numeric comparison operators are
222 integers when their expansion is in "skipping" mode (fixes bug
223 introduced by 4.64-PH/07).
224
4362ff0d
PH
225PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
226 child addresses, Exim now panics and dies. Previously, because the count
227 is held in a short int, deliveries were likely to be lost. As such a
228 large number of recipients for a single message is ridiculous
229 (performance will be very, very poor), I have chosen to impose a limit
230 rather than extend the field.
231
93cfa765 232
944e9e9c
TF
233Exim version 4.64
234-----------------
aa41d2de 235
21d74bd9
TK
236TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
237 leftover -K file (the existence of which was triggered by #402).
238 While we were at it, introduced process PID as part of the -K
239 filename. This should rule out race conditions when creating
240 these files.
241
242TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
243 processing considerably. Previous code took too long for large mails,
244 triggering a timeout which in turn triggers #401.
245
246TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
247 in the DK code in transports.c. sendfile() is not really portable,
248 hence the _LINUX specificness.
944e9e9c
TF
249
250TF/01 In the add_headers option to the mail command in an Exim filter,
251 there was a bug that Exim would claim a syntax error in any
252 header after the first one which had an odd number of characters
253 in the field name.
254
2b1c6e3a
PH
255PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
256 callout verification, Exim cached a "reject" for the entire domain. This
257 is correct for most verifications, but it is not correct for a recipient
258 verification with use_sender or use_postmaster set, because in that case
259 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
260 case of MAIL FROM:<> rejection from other early rejections (e.g.
261 rejection of HELO). When verifying a recipient using a non-null MAIL
262 address, the cache is ignored if it shows MAIL FROM:<> rejection.
263 Whatever the result of the callout, the value of the domain cache is
264 left unchanged (for any other kind of callout, getting as far as trying
265 RCPT means that the domain itself is ok).
266
1f872c80
PH
267PH/02 Tidied a number of unused variable and signed/unsigned warnings that
268 gcc 4.1.1 threw up.
269
270PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
271 manifest itself as EPIPE rather than ECONNECT. When tidying away a
272 session, the daemon ignores ECONNECT errors and logs others; it now
273 ignores EPIPE as well.
274
d203e649
PH
275PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
276 (quoted-printable decoding).
277
cc2ed8f7 278PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 279 later the small subsequent patch to fix an introduced bug.
f951fd57 280
ddfcd446
PH
281PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
282
d45b1de8
PH
283PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
284
285PH/08 An error is now given if message_size_limit is specified negative.
286
38a0a95f 287PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 288 to be given (somewhat) arbitrary names.
38a0a95f 289
a2405d83
JJ
290JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
291 in 4.64-PH/09.
292
293JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
294 miscellaneous code fixes
295
6ea85e9a
PH
296PH/10 Added the log_reject_target ACL modifier to specify where to log
297 rejections.
298
26da7e20
PH
299PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
300 hostname. This is wrong, because it relates to the incoming message (and
301 probably the interface on which it is arriving) and not to the outgoing
302 callout (which could be using a different interface). This has been
303 changed to use the value of the helo_data option from the smtp transport
304 instead - this is what is used when a message is actually being sent. If
305 there is no remote transport (possible with a router that sets up host
306 addresses), $smtp_active_hostname is used.
6ea85e9a 307
14aa5a05 308PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 309 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
310 (a) The code assumed that strncpy() returns a negative number on buffer
311 overflow, which isn't the case. Replaced with Exim's string_format()
312 function.
313 (b) There were several signed/unsigned issues. I just did the minimum
314 hacking in of casts. There is scope for a larger refactoring.
315 (c) The code used strcasecmp() which is not a standard C function.
316 Replaced with Exim's strcmpic() function.
317 (d) The code set only $1; it now sets $auth1 as well.
318 (e) A simple test gave the error "authentication client didn't specify
319 service in request". It would seem that Dovecot has changed its
320 interface. Fortunately there's a specification; I followed it and
321 changed what the client sends and it appears to be working now.
322
ff75a1f7
PH
323PH/13 Added $message_headers_raw to provide the headers without RFC 2047
324 decoding.
325
e6f6568e
PH
326PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
327 address A is aliased to B and C, where B exists and C does not. Without
328 -v the output is "A verified" because verification stops after a
329 successful redirection if more than one address is generated. However,
330 with -v the child addresses are also verified. Exim was outputting "A
331 failed to verify" and then showing the successful verification for C,
332 with its parentage. It now outputs "B failed to verify", showing B's
333 parentage before showing the successful verification of C.
334
d6f6e0dc
PH
335PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
336 look up a TXT record in a specific list after matching in a combined
337 list.
338
322050c2
PH
339PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
340 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
341 they consult the DNS. I had assumed they would set it the way they
342 wanted; and indeed my experiments on Linux seem to show that in some
343 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
344 To be on the safe side, however, I have now made the interface to
345 host_find_byname() similar to host_find_bydns(), with an argument
346 containing the DNS resolver options. The host_find_byname() function now
347 sets these options at its start, just as host_find_bydns() does. The smtp
348 transport options dns_qualify_single and dns_search_parents are passed to
349 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
350 of host_find_byname() use the default settings of RES_DEFNAMES
351 (qualify_single) but not RES_DNSRCH (search_parents).
352
08955dd3
PH
353PH/17 Applied (a modified version of) Nico Erfurth's patch to make
354 spool_read_header() do less string testing, by means of a preliminary
355 switch on the second character of optional "-foo" lines. (This is
356 overdue, caused by the large number of possibilities that now exist.
357 Originally there were few.) While I was there, I also converted the
358 str(n)cmp tests so they don't re-test the leading "-" and the first
359 character, in the hope this might squeeze out yet more improvement.
360
1eccaa59
PH
361PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
362 flag allowing group syntax was set by the header_syntax check but not
363 turned off, possible causing trouble later; (2) The flag was not being
364 set at all for the header_verify test, causing "group"-style headers to
365 be rejected. I have now set it in this case, and also caused header_
366 verify to ignore an empty address taken from a group. While doing this, I
367 came across some other cases where the code for allowing group syntax
368 while scanning a header line wasn't quite right (mostly, not resetting
369 the flag correctly in the right place). These bugs could have caused
370 trouble for malformed header lines. I hope it is now all correct.
371
602e59e5
PH
372PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
373 with the "reply" argument non-NULL. The code, however (which originally
374 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
375 but it didn't always do it. This confused somebody who was copying the
376 code for some other use. I have removed all the tests.
377
411ef850
PH
378PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
379 feature that was used to support insecure browsers during the U.S. crypto
380 embargo. It requires special client support, and Exim is probably the
381 only MTA that supported it -- and would never use it because real RSA is
382 always available. This code has been removed, because it had the bad
383 effect of slowing Exim down by computing (never used) parameters for the
384 RSA_EXPORT functionality.
385
7befa435
PH
386PH/21 On the advice of Timo Sirainen, added a check to the dovecot
387 authenticator to fail if there's a tab character in the incoming data
388 (there should never be unless someone is messing about, as it's supposed
389 to be base64-encoded). Also added, on Timo's advice, the "secured" option
390 if the connection is using TLS or if the remote IP is the same as the
391 local IP, and the "valid-client-cert option" if a client certificate has
392 been verified.
393
48da4259 394PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
395 authenticators. This can be used for authorization after authentication
396 succeeds. (In the case of plaintext, it servers for both authentication
397 and authorization.)
398
48da4259
PH
399PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
400 if any retry times were supplied.
401
d1d5595c
PH
402PH/24 Exim crashed if verify=helo was activated during an incoming -bs
403 connection, where there is no client IP address to check. In this
404 situation, the verify now always succeeds.
405
0ef732d9
PH
406PH/25 Applied John Jetmore's -Mset patch.
407
328895cc
PH
408PH/26 Added -bem to be like -Mset, but loading a message from a file.
409
fd700877
PH
410PH/27 In a string expansion for a processed (not raw) header when multiple
411 headers of the same name were present, leading whitespace was being
412 removed from all of them, but trailing whitespace was being removed only
413 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
414 before concatenation. Completely empty headers in a concatenation (as
415 before) are ignored.
fd700877 416
8dce1a6f
PH
417PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
418 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
419
17af4a17
PH
420PH/29 [Removed. This was a change that I later backed out, and forgot to
421 correct the ChangeLog entry (that I had efficiently created) before
422 committing the later change.]
f6c332bd
PH
423
424PH/30 Exim was sometimes attempting to deliver messages that had suffered
425 address errors (4xx response to RCPT) over the same connection as other
426 messages routed to the same hosts. Such deliveries are always "forced",
427 so retry times are not inspected. This resulted in far too many retries
428 for the affected addresses. The effect occurred only when there were more
429 hosts than the hosts_max_try setting in the smtp transport when it had
430 the 4xx errors. Those hosts that it had tried were not added to the list
431 of hosts for which the message was waiting, so if all were tried, there
432 was no problem. Two fixes have been applied:
433
434 (i) If there are any address or message errors in an SMTP delivery, none
435 of the hosts (tried or untried) are now added to the list of hosts
436 for which the message is waiting, so the message should not be a
437 candidate for sending over the same connection that was used for a
438 successful delivery of some other message. This seems entirely
439 reasonable: after all the message is NOT "waiting for some host".
440 This is so "obvious" that I'm not sure why it wasn't done
441 previously. Hope I haven't missed anything, but it can't do any
442 harm, as the worst effect is to miss an optimization.
443
444 (ii) If, despite (i), such a delivery is accidentally attempted, the
445 routing retry time is respected, so at least it doesn't keep
446 hammering the server.
447
c1114884
PH
448PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
449 in ${readsocket because some servers need this prod.
450
7a0743eb
PH
451PH/32 Added some extra debug output when updating a wait-xxx database.
452
0d85fa3f
PH
453PH/33 The hint "could be header name not terminated by colon", which has been
454 given for certain expansion errors for a long time, was not being given
455 for the ${if def:h_colon_omitted{... case.
456
1bf43b78
PH
457PH/34 The spec says: "With one important exception, whenever a domain list is
458 being scanned, $domain contains the subject domain." There was at least
459 one case where this was not true.
460
520de300
PH
461PH/35 The error "getsockname() failed: connection reset by peer" was being
462 written to the panic log as well as the main log, but it isn't really
463 panic-worthy as it just means the connection died rather early on. I have
464 removed the panic log writing for the ECONNRESET error when getsockname()
465 fails.
466
48c7f9e2
PH
467PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
468 runs only) independently of the message's sender address. This meant
469 that, if the 4xx error was in fact related to the sender, a different
470 message to the same recipient with a different sender could confuse
471 things. In particualar, this can happen when sending to a greylisting
472 server, but other circumstances could also provoke similar problems.
473 I have changed the default so that the retry time for these errors is now
474 based a combination of the sender and recipient addresses. This change
475 can be overridden by setting address_retry_include_sender=false in the
476 smtp transport.
477
99ea1c86
PH
478PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
479 remote server are returned as part of bounce messages. This was not
480 happening for LMTP over a pipe (the lmtp transport), but now it is the
481 same for both kinds of LMTP.
482
a2042e78
PH
483PH/38 Despite being documented as not happening, Exim was rewriting addresses
484 in header lines that were in fact CNAMEs. This is no longer the case.
485
4fbcfc2e
PH
486PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
487 and queue runs started by the daemon processed all messages. This has
488 been fixed so that -R and -S can now usefully be given with -q<time>.
489
aa41d2de
PH
490PH/40 Import PCRE release 6.7 (fixes some bugs).
491
af561417
PH
492PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
493
3cc66b45
PH
494PH/42 Give an error if -q is specified more than once.
495
194cc0e4
PH
496PH/43 Renamed the variables $interface_address and $interface_port as
497 $received_ip_address and $received_port, to make it clear that these
498 values apply to message reception, and not to the outgoing interface when
499 a message is delivered. (The old names remain recognized, of course.)
500
a401ddaa
PH
501PH/44 There was no timeout on the connect() call when using a Unix domain
502 socket in the ${readsocket expansion. There now is.
503
4e88a19f
PH
504PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
505 be meaningful with "accept".
506
d7d7b289
SC
507SC/01 Eximstats V1.43
508 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
509
510SC/02 Eximstats V1.44
511 Use a glob alias rather than an array ref in the generated
512 parser. This improves both readability and performance.
513
514SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
515 Collect SpamAssassin and rejection statistics.
516 Don't display local sender or destination tables unless
517 there is data to show.
518 Added average volumes into the top table text output.
519
520SC/04 Eximstats V1.46
521 Collect data on the number of addresses (recipients)
522 as well as the number of messages.
523
524SC/05 Eximstats V1.47
525 Added 'Message too big' to the list of mail rejection
526 reasons (thanks to Marco Gaiarin).
527
528SC/06 Eximstats V1.48
529 Mainlog lines which have GMT offsets and are too short to
530 have a flag are now skipped.
531
532SC/07 Eximstats V1.49 (Alain Williams)
533 Added the -emptyok flag.
534
535SC/08 Eximstats V1.50
536 Fixes for obtaining the IP address from reject messages.
537
0ea2a468
JJ
538JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
539 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
540 whitesspace changes from 4.64-PH/27
541
542JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
543 match 4.64-PH/13
544
545JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
546 are found, allow negative numbers in numeric criteria)
547
548JJ/06 exipick.20061117.2, added new $message_body_missing variable
549
550JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
551 to match changes made in 4.64-PH/43
552
8a10f5a4
PH
553PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
554
30e18802
PH
555PH/47 Put in an explicit test for a DNS lookup of an address record where the
556 "domain" is actually an IP address, and force a failure. This locks out
557 those revolvers/nameservers that support "A-for-A" lookups, in
558 contravention of the specifications.
559
55728a4f
PH
560PH/48 When a host name was looked up from an IP address, and the subsequent
561 forward lookup of the name timed out, the host name was left in
562 $sender_host_name, contrary to the specification.
d7d7b289 563
d7837193
PH
564PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
565 restricted to single-key lookups, Exim was not diagnosing an error if
566 * or *@ was used with a query-style lookup.
567
87054a31
PH
568PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
569
ea2c01d2
MH
570MH/01 local_scan ABI version incremented to 1.1. It should have been updated
571 long ago, but noone interested enough thought of it. Let's just say that
572 the "1.1" means that there are some new functions that weren't there at
573 some point in the past.
574
e4fa6968
PH
575PH/51 Error processing for expansion failure of helo_data from an smtp
576 transport during callout processing was broken.
577
56f5d9bd
PH
578PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
579 tested/used via the -bh/-bhc/-bs options.
580
922e1c28
PH
581PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
582 bug, fixed in subsequent PCRE releases).
583
21eb6e72
PH
584PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
585 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
586
a0540757
PH
587PH/55 Check for a ridiculously long file name in exim_dbmbuild.
588
944e9e9c 589
478be7b0
SC
590Exim version 4.63
591-----------------
592
593SC/01 Use a glob alias rather than an array ref in eximstats generated
594 parser. This improves both readability and performance.
595
596SC/02 Collect SpamAssassin and rejection statistics in eximstats.
597 Don't display local sender or destination tables in eximstats unless
598 there is data to show.
599 Added average volumes into the eximstats top table text output.
600
601SC/03 Collect data on the number of addresses (recipients) as well
602 as the number of messages in eximstats.
603
2b965a65
TF
604TF/01 Correct an error in the documentation for the redirect router. Exim
605 does (usually) call initgroups() when daemonizing.
478be7b0 606
45b91596
PH
607TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
608 with consistent privilege compared to when running as a daemon.
478be7b0 609
c59f5781
TF
610TF/03 Note in the spec that $authenticated_id is not set for local
611 submissions from trusted users.
612
90fc3069
TF
613TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
614 Thanks to Dean Brooks <dean@iglou.com> for the patch.
615
6083aca0
TF
616TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
617 by adding some example configuration directives to the default
618 configuration file. A little bit of work is required to uncomment the
619 directives and define how usernames and passwords are checked, but
620 there is now a framework to start from.
621
765b530f
PH
622PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
623 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
624 without this. I don't know how relevant this is to other LDAP libraries.
625
4e167a8c
PH
626PH/02 Add the verb name to the "unknown ACL verb" error.
627
4608d683
PH
628PH/03 Magnus Holmgren's patch for filter_prepend_home.
629
b8dc3e4a
PH
630PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
631
5418e93b
PH
632PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
633 directory not expanded when it should be if an expanded home directory
634 was set for the address (which is overridden by the transport).
635
b4a9bda2
PH
636PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
637 libradius.
638
45b91596
PH
639PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
640 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
641 because it is too late at that time, and has no effect.
642
5547e2c5
PH
643PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
644 security issue with \' (bugzilla #107). I could not use the
645 PQescapeStringConn() function, because it needs a PGconn value as one of
646 its arguments.
647
dbcef0ea
PH
648PH/08 When testing addresses using -bt, indicate those final addresses that
649 are duplicates that would not cause an additional delivery. At least one
650 person was confused, thinking that -bt output corresponded to deliveries.
651 (Suppressing duplicates isn't a good idea as you lose the information
652 about possibly different redirections that led to the duplicates.)
653
25257489
PH
654PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
655 systems where poll() doesn't work, in particular OS X.
656
c816d124
PH
657PH/10 Added more information to debugging output for retry time not reached.
658
a9ccd69a
PH
659PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
660 operations in malware.c.
661
75fa1910
PH
662PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
663 signatures.
664
a7d7aa58
PH
665PH/13 If write_rejectlog was set false when logging was sent to syslog with
666 syslog_duplication set false, log lines that would normally be written
667 both the the main log and to the reject log were not written to syslog at
668 all.
669
42119b09
PH
670PH/14 In the default configuration, change the use of "message" in ACL warn
671 statements to "add_header".
672
41609df5
PH
673PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
674 not followed by a command (e.g. "seen endif").
675
a5bd321b
PH
676PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
677 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
678 latter.
679
e85a7ad5 680PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
681 so that it is now:
682
e85a7ad5
PH
683 ${if or { \
684 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
685 { match{$h_precedence:}{(?i)bulk|list|junk} } \
686 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
687 }{no}{yes}}
688
e85a7ad5
PH
689 The Auto-Submitted: and various List- headers are standardised, whereas I
690 don't think Precedence: ever was.
5dff5817 691
d8fe1c03
PH
692PH/18 Refactored debugging code in route_finduser() to show more information,
693 in particular, the error code if getpwnam() issues one.
694
16282d2b
PH
695PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
696 This is apparently needed in addition to the PH/07 change above to avoid
697 any possible encoding problems.
698
35d40a98
PH
699PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
700 but not after initializing Perl.
701
034d99ab
PH
702PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
703 output them only if debugging. By default they are written stderr,
704 apparently, which is not desirable.
705
6ec97b1b
PH
706PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
707 queries.
708
e22ca4ac
JJ
709JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
710 --not options
711
712JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
713
33d73e3b
PH
714PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
715 authenticated or an ident call has been made. Suppress the default
716 values for $authenticated_id and $authenticated_sender (but permit -oMai
717 and -oMas) when testing with -bh.
718
9ecb03f3
PH
719PH/24 Re-jigged the order of the tests in the default configuration so that the
720 tests for valid domains and recipients precede the DNS black list and CSA
721 tests, on the grounds that those ones are more expensive.
722
084efe8d
PH
723PH/25 Exim was not testing for a space following SMTP commands such as EHLO
724 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
725 This bug exists in every version of Exim that I still have, right back to
726 0.12.
727
366fc9f0
PH
728PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
729 However, an attempt to turn on case-sensitivity in a regex key by
730 including (?-i) didn't work because the subject string was already
731 lowercased, and the effects were non-intuitive. It turns out that a
732 one-line patch can be used to allow (?-i) to work as expected.
733
c59f5781 734
c887c79e
TF
735Exim version 4.62
736-----------------
737
738TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
739 other effects) broke the use of negated acl sub-conditions.
740
1cce3af8
PH
741PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
742 patch).
743
afb3eaaf
PH
744PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
745 "Deny" causes Exim to reject the incoming connection with a 554 error.
746 Unfortunately, if there is a major crisis, such as a disk failure,
747 tcp-wrappers gives "deny", whereas what one would like would be some
748 kind of temporary error. A kludge has been added to help with this.
749 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
750 554 error is used if errno is still zero or contains ENOENT (which occurs
751 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
752 451 error is used.
753
e173618b
PH
754PH/03 Add -lutil to the default FreeBSD LIBS setting.
755
dd16e114
PH
756PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
757 errors. Otherwise a message that provokes a temporary error (when other
758 messages do not) can cause a whole host to time out.
759
f7fd3850
PH
760PH/05 Batch deliveries by appendfile and pipe transports did not work when the
761 addresses were routed directly to files or pipes from a redirect router.
762 File deliveries just didn't batch; pipe deliveries might have suffered
763 odd errors.
764
d87df92c
PH
765PH/06 A failure to get a lock for a hints database would erroneously always say
766 "Failed to get write lock", even when it was really a read lock.
767
7e9f683d
PH
768PH/07 The appendfile transport was creating MBX lock files with a fixed mode
769 of 0600. This has been changed to use the value of the lockfile_mode
770 option (which defaults to 0600).
771
bfad5236
PH
772PH/08 Applied small patch from the Sieve maintainer.
773
01c490df
PH
774PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
775 folder from quota calculations, a direct delivery into this folder messed
776 up the contents of the maildirsize file. This was because the regex was
777 used only to exclude .Trash (or whatever) when the size of the mailbox
778 was calculated. There was no check that a delivery was happening into an
779 excluded directory. This bug has been fixed by ignoring all quota
780 processing for deliveries into excluded directories.
781
d6629cdc
PH
782PH/10 Added the maildirfolder_create_regex option to appendfile.
783
1cce3af8 784
214e2000
PH
785Exim version 4.61
786-----------------
787
788PH/01 The code for finding all the local interface addresses on a FreeBSD
789 system running IPv6 was broken. This may well have applied to all BSD
790 systems, as well as to others that have similar system calls. The broken
791 code found IPv4 interfaces correctly, but gave incorrect values for the
792 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
793 that it would not match correctly against @[] and not recognize the IPv6
794 addresses as local.
795
f9daeae0
PH
796PH/02 The ipliteral router was not recognizing addresses of the form user@
797 [ipv6:....] because it didn't know about the "ipv6:" prefix.
798
7e66e54d
PH
799PH/03 Added disable_ipv6.
800
c8ea1597
PH
801PH/04 Changed $reply_address to use the raw form of the headers instead of the
802 decoded form, because it is most often used to construct To: headers
803 lines in autoreplies, and the decoded form may well be syntactically
804 invalid. However, $reply_address has leading white space removed, and all
805 newlines turned into spaces so that the autoreply transport does not
806 grumble.
807
911f6fde
PH
808PH/05 If group was specified without a user on a router, and no group or user
809 was specified on a transport, the group from the router was ignored.
810
47ca6d6c
PH
811PH/06 Increased the number of ACL variables to 20 of each type, and arranged
812 for visible compile-time settings that can be used to change these
813 numbers, for those that want even more. Backwards compatibility with old
814 spool files has been maintained. However, going back to a previous Exim
815 release will lost any variables that are in spool files.
816
ed0e9820
PH
817PH/07 Two small changes when running in the test harness: increase delay when
818 passing a TCP/IP connection to a new process, in case the original
819 process has to generate a bounce, and remove special handling of
820 127.0.0.2 (sic), which is no longer necessary.
821
eff37e47
PH
822PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
823 be the same on different OS.
824
1921d2ea
PH
825PH/09 Moved a debug statement in filter processing to avoid a race problem when
826 testing.
827
b3f69ca8
JJ
828JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
829 whether --show-vars was specified or not
830
831JJ/02 exipick: Added support for new ACL variable spool format introduced
832 in 4.61-PH/06
833
424a1c63
PH
834PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
835 syntactically invalid From: or Reply-to: line, and a filter used this to
836 generate an autoreply, and therefore failed to obtain an address for the
837 autoreply, Exim could try to deliver to a non-existent relative file
838 name, causing unrelated and misleading errors. What now happens is that
839 it logs this as a hard delivery error, but does not attempt to create a
840 bounce message.
841
7a100415
PH
842PH/11 The exinext utility has a -C option for testing purposes, but although
843 the given file was scanned by exinext itself; it wasn't being passed on
844 when Exim was called.
845
19b9dc85
PH
846PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
847 an end-of-file indication when reading a command response.
848
309bd837
PH
849PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
850 compiled. In many other places in Exim, IPv6 addresses are always
851 recognized, so I have changed this. It also means that IPv4 domain
852 literals of the form [IPV4:n.n.n.n] are now always recognized.
853
59e82a2a
PH
854PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
855 used if the router is not running as root, for example, when verifying at
856 ACL time, or when using -bh. The debugging output from this situation was
857 non-existent - all you got was a failure to exec. I have made two
858 changes:
859
860 (a) Failures to set uid/gid, the current directory, or a process leader
861 in a subprocess such as that created by queryprogram now generate
862 suitable debugging ouput when -d is set.
863
864 (b) The queryprogram router detects when it is not running as root,
865 outputs suitable debugging information if -d is set, and then runs
866 the subprocess without attempting to change uid/gid.
867
9edc04ce
PH
868PH/15 Minor change to Makefile for building test_host (undocumented testing
869 feature).
870
1349e1e5
PH
871PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
872 additional section of a DNS packet that returns MX or SRV records.
873 Instead, it always explicitly searches for A/AAAA records. This avoids
874 major problems that occur when a DNS server includes only records of one
875 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
876 fixed another bug: if SRV records were looked up and the corresponding
877 address records were *not* found in the additional section, the port
878 values from the SRV records were lost.
879
ea49d0e1
PH
880PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
881 using the correct key (the original address) when searching the retry
882 rules in order to find which one to use for generating the retry hint.
883
064a94c9
PH
884PH/18 If quota_warn_message contains a From: header, Exim now refrains from
885 adding the default one. Similarly, if it contains a Reply-To: header, the
886 errors_reply_to option, if set, is not used.
887
727071f8
PH
888PH/19 When calculating a retry time, Exim used to measure the "time since
889 failure" by looking at the "first failed" field in the retry record. Now
890 it does not use this if it is later than than the arrival time of the
891 message. Instead it uses the arrival time. This makes for better
892 behaviour in cases where some deliveries succeed, thus re-setting the
893 "first failed" field. An example is a quota failure for a huge message
894 when small messages continue to be delivered. Without this change, the
895 "time since failure" will always be short, possible causing more frequent
896 delivery attempts for the huge message than are intended.
dd16e114 897 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 898
f78eb7c6
PH
899PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
900 $1, $2, $3) because the numerical variables can be reset during some
901 expansion items (e.g. "match"), thereby losing the authentication data.
902
21c28500
PH
903PH/21 Make -bV show the size of off_t variables so that the test suite can
904 decide whether to run tests for quotas > 2G.
905
906PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
907 mailbox_size, and mailbox_filecount in the appendfile transport. If a
908 filecount value is greater than 2G or if a quota value is greater than 2G
909 on a system where the size of off_t is not greater than 4, a panic error
910 is given.
911
1688f43b
PH
912PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
913 never match. The debug and -bh output now contains an explicit error
914 message indicating a malformed IPv4 address or mask.
915
916PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
917 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
918 PH/23 above applies.
919
9675b384
PH
920PH/25 Do not write to syslog when running in the test harness. The only
921 occasion when this arises is a failure to open the main or panic logs
922 (for which there is an explicit test).
923
6a3f1455
PH
924PH/26 Added the /no_tell option to "control=freeze".
925
dac79d3e
PH
926PH/27 If a host name lookup failed very early in a connection, for example, if
927 the IP address matched host_lookup and the reverse lookup yielded a name
928 that did not have a forward lookup, an error message of the form "no IP
929 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
930 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 931
5977a0b3
PH
932PH/28 An enabling patch from MH: add new function child_open_exim2() which
933 allows the sender and the authenticated sender to be set when
934 submitting a message from within Exim. Since child_open_exim() is
935 documented for local_scan(), the new function should be too.
936
c91535f3
PH
937PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
938 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
939 results in an empty string is now treated as unset.
940
0d46a8c8
PH
941PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
942
278c6e6c
PH
943PH/31 Added sender_verify_fail logging option.
944
2cbb4081
PH
945PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
946 needed by RFC 822 but not by RFC 2822 was commented out. I have now
947 tidied the source and removed it altogether.
948
3eef829e
PH
949PH/33 When a queue run was abandoned because the load average was too high, a
950 log line was always written; now it is written only if the queue_run log
951 selector is set. In addition, the log line for abandonment now contains
952 information about the queue run such as the pid. This is always present
953 in "start" and "stop" lines but was omitted from the "abandon" line.
954
1ab95fa6
PH
955PH/34 Omit spaces between a header name and the colon in the error message that
956 is given when verify = headers_syntax fails (if there are lots of them,
957 the message gets confusing).
958
230205fc
PH
959PH/35 Change the default for dns_check_names_pattern to allow slashes within
960 names, as there are now some PTR records that contain slashes. This check
961 is only to protect against broken name servers that fall over on strange
962 characters, so the fact that it applies to all lookups doesn't matter.
963
75e0e026
PH
964PH/36 Now that the new test suite is complete, we can remove some of the
965 special code in Exim that was needed for the old test suite. For example,
966 sorting DNS records because real resolvers return them in an arbitrary
967 order. The new test suite's fake resolver always returns records in the
968 same order.
969
970PH/37 When running in the test harness, use -odi for submitted messages (e.g.
971 bounces) except when queue_only is set, to avoid logging races between
972 the different processes.
973
145396a6
PH
974PH/38 Panic-die if .include specifies a non-absolute path.
975
3cd34f13
PH
976PH/39 A tweak to the "H" retry rule from its user.
977
11121d3d
JJ
978JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
979 a label. They prevented compilation on older perls.
980
981JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
982 a warning to be raised on newish perls.
983
984JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
985 on queue. Changes to match documented behaviour of showing count of
986 messages matching specified criteria.
987
8def5aaf
PH
988PH/40 Changed the default ident timeout from 30s to 5s.
989
929ba01c
PH
990PH/41 Added support for the use of login_cap features, on those BSD systems
991 that have them, for controlling the resources used by pipe deliveries.
992
2632889e
PH
993PH/42 The content-scanning code uses fopen() to create files in which to put
994 message data. Previously it was not paying any attention to the mode of
995 the files. Exim runs with umask(0) because the rest of the code creates
996 files with open(), and sets the required mode explicitly. Thus, these
997 files were ending up world-writeable. This was not a big issue, because,
998 being within the spool directory, they were not world-accessible. I have
999 created a function called modefopen, which takes an additional mode
1000 argument. It sets umask(777), creates the file, chmods it to the required
1001 mode, then resets the umask. All the relevant calls to fopen() in the
1002 content scanning code have been changed to use this function.
1003
944a9c55
PH
1004PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1005 to 24 hours. This avoids potential overflow problems when processing G
1006 and H retry rules. I suspect nobody ever tinkers with this value.
1007
4a23603b
PH
1008PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1009
4730f942
PH
1010PH/45 When the plaintext authenticator is running as a client, the server's
1011 challenges are checked to ensure they are valid base64 strings. By
1012 default, the authentication attempt is cancelled if an invalid string is
1013 received. Setting client_ignore_invalid_base64 true ignores these errors.
1014 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1015 they are received. Thus, the responses can be made to depend on the
1016 challenges. If an invalid string is ignored, an empty string is placed in
1017 the variable.
1018
30dba1e6
PH
1019PH/46 Messages that are created by the autoreply transport now contains a
1020 References: header, in accordance with RFCs 2822 and 3834.
1021
382afc6b
PH
1022PH/47 Added authenticated_sender_force to the smtp transport.
1023
a86229cf
PH
1024PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1025
50c99ba6
PH
1026PH/49 Installed latest patch from the Sieve maintainer.
1027
d35e429d
PH
1028PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1029 was also set, the appendfile transport was unnecessarily scanning a
1030 directory of message files (e.g. for maildir delivery) to find the count
1031 of files (along with the size), even though it did not need this
1032 information. It now does the scan only if it needs to find either the
1033 size of the count of files.
1034
f90d018c
PH
1035PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1036
75def545
PH
1037PH/52 Two bugs concerned with error handling when the smtp transport is
1038 used in LMTP mode:
1039
1040 (i) Exim was not creating retry information for temporary errors given
1041 for individual recipients after the DATA command when the smtp transport
1042 was used in LMTP mode. This meant that they could be retried too
1043 frequently, and not timed out correctly.
1044
1045 (ii) Exim was setting the flag that allows error details to be returned
1046 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1047 recipients that were returned after the DATA command.
1048
1049PH/53 This is related to PH/52, but is more general: for any failing address,
1050 when detailed error information was permitted to be returned to the
1051 sender, but the error was temporary, then after the final timeout, only
1052 "retry timeout exceeded" was returned. Now it returns the full error as
1053 well as "retry timeout exceeded".
1054
c46782ef
PH
1055PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1056 do this, and (what is worse) MTAs that accept it.
1057
71fafd95
PH
1058PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1059 will now be deprecated.
1060
2c5db4fd
PH
1061PH/56 New os.c-cygwin from the Cygwin maintainer.
1062
9cf6b11a
JJ
1063JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1064 formats (previously only available in exim formats via -bpr, -bpru,
1065 and -bpra. Now also available in native and exiqgrep formats)
1066
1067JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1068 with very large, slow to parse queues
1069
1070JJ/08 exipick: added ! as generic prefix to negate any criteria format
1071
1072JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1073
898d150f
PH
1074PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1075 responses to authentication challenges, though it was showing the
1076 challenges; (ii) I've removed the CR characters from the debug output for
1077 SMTP output lines.
1078
46218253
PH
1079PH/58 Allow for the insertion of a newline as well as a space when a string
1080 is turned into more than one encoded-word during RFC 2047 encoding. The
1081 Sieve code now uses this.
1082
e97957bc
PH
1083PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1084 data_4xx, lost_connection, tls_required.
1085
81e509d7
PH
1086PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1087 message was being sent as an SMTP response.
1088
3d240ff7
PH
1089PH/61 Add -l and -k options to exicyclog.
1090
b37c4101
PH
1091PH/62 When verifying, if an address was redirected to one new address, so that
1092 verification continued, and the new address failed or deferred after
1093 having set something in $address_data, the value of $address_data was not
1094 passed back to the ACL. This was different to the case when no
1095 redirection occurred. The value is now passed back in both cases.
1096
79378e0f
PH
1097PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1098 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1099 use login_cap.h, so on its own it isn't the distinguishing feature. The
1100 new name refers directly to the setclassresources() function.
1101
e49c7bb4
PH
1102PH/65 Added configuration files for NetBSD3.
1103
d114ec46
PH
1104PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1105
f3d7df6c
PH
1106PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1107 is preferred over IPv4.
1108
715ab376
PH
1109PH/68 The bounce_return_message and bounce_return_body options were not being
1110 honoured for bounces generated during the reception of non-SMTP messages.
1111 In particular, this applied to messages rejected by the ACL. This bug has
1112 been fixed. However, if bounce_return_message is true and bounce_return_
1113 body is false, the headers that are returned for a non-SMTP message
1114 include only those that have been read before the error was detected.
1115 (In the case of an ACL rejection, they have all been read.)
1116
6b31b150
PH
1117PH/69 The HTML version of the specification is now built in a directory called
1118 spec_html instead of spec.html, because the latter looks like a path with
1119 a MIME-type, and this confuses some software.
1120
1121PH/70 Catch two compiler warnings in sieve.c.
1122
d515a917
PH
1123PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1124 function verify_get_ident() calls ip_connect() to connect a socket, but
1125 if the "connect()" function timed out, ip_connect() used to close the
1126 socket. However, verify_get_ident() also closes the socket later, and in
1127 between Exim writes to the log, which may get opened at this point. When
1128 the socket was closed in ip_connect(), the log could get the same file
1129 descriptor number as the socket. This naturally causes chaos. The fix is
1130 not to close the socket in ip_connect(); the socket should be closed by
1131 the function that creates it. There was only one place in the code where
1132 this was missing, in the iplookup router, which I don't think anybody now
1133 uses, but I've fixed it anyway.
1134
9b8fadde
PH
1135PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1136 well as to direct DNS lookups. Otherwise the handling of names in host
1137 lists is inconsistent and therefore confusing.
1138
214e2000 1139
5de37277
PH
1140Exim version 4.60
1141-----------------
1142
cc38ddbf
PH
1143PH/01 Two changes to the default runtime configuration:
1144
1145 (1) Move the checks for relay_from_hosts and authenticated clients from
1146 after to before the (commented out) DNS black list checks.
1147
1148 (2) Add control=submission to the relay_from_hosts and authenticated
1149 clients checks, on the grounds that messages accepted by these
1150 statements are most likely to be submissions.
5de37277 1151
72fdd6ae
PH
1152PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1153
1154 (1) Generate an error if the third argument for the ${prvs expansion is
1155 not a single digit.
1156
1157 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1158 string.
1159
1160 (3) Reset the variables that are obtained from the first argument of
1161 ${prvscheck and used in the second argument before leaving the code,
1162 because their memory is reclaimed, so using them afterwards may do
1163 silly things.
1164
1165 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1166 one (it's much easier than Tom thought :-).
1167
1168 (5) Because of (4), we can now allow for the use of $prvscheck_result
1169 inside the third argument.
cb9328de 1170
cb741023
PH
1171PH/03 For some reason, the default setting of PATH when running a command from
1172 a pipe transport was just "/usr/bin". I have changed it to
1173 "/bin:/usr/bin".
1174
f174f16e
PH
1175PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1176 anything to be listed in the output from -bV.
b2f5a032 1177
c25242d7
PH
1178PH/05 When a filter generated an autoreply, the entire To: header line was
1179 quoted in the delivery log line, like this:
1180
1181 => >A.N.Other <ano@some.domain> <original@ddress> ...
1182
1183 This has been changed so that it extracts the operative address. There
1184 may be more than one such address. If so, they are comma-separated, like
1185 this:
1186
1187 => >ano@some.domain,ona@other.domain <original@ddress> ...
1188
82c19f95
PH
1189PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1190 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1191 not being looked up in the rDNS to get a host name, Exim was showing the
1192 IP address twice in Received: lines, even though the IP addresses were
1193 identical. For example:
1194
1195 Received: from [1.2.3.4] (helo=[1.2.3.4])
1196
1197 However, if the real host name was known, it was omitting the HELO data
1198 if it matched the actual IP address. This has been tidied up so that it
1199 doesn't show the same IP address twice.
1200
d7ffbc12
PH
1201PH/07 When both +timestamp and +memory debugging was on, the value given by
1202 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1203 called by the debug printing, thereby overwriting the timestamp buffer.
1204 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1205
9f526266
PH
1206PH/08 When the original message was included in an autoreply transport, it
1207 always said "this is a copy of the message, including all the headers",
1208 even if body_only or headers_only was set. It now gives an appropriate
1209 message.
1210
87fcc8b9
PH
1211PH/09 Applied a patch from the Sieve maintainer which:
1212
1213 o fixes some comments
1214 o adds the (disabled) notify extension core
1215 o adds some debug output for the result of if/elsif tests
1216 o points to the current vacation draft in the documentation
1217 and documents the missing references header update
1218
1219 and most important:
1220
1221 o fixes a bug in processing the envelope test (when testing
1222 multiple envelope elements, the last element determinted the
1223 result)
1224
456682f5
PH
1225PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1226 Electronic Mail") by including:
1227
1228 Auto-submitted: auto-generated
1229
1230 in the messages that it generates (bounce messages and others, such as
1231 warnings). In the case of bounce messages for non-SMTP mesages, there was
1232 also a typo: it was using "Auto_submitted" (underscore instead of
1233 hyphen). Since every message generated by Exim is necessarily in response
1234 to another message, thes have all been changed to:
1235
1236 Auto-Submitted: auto-replied
1237
1238 in accordance with these statements in the RFC:
1239
1240 The auto-replied keyword:
1241
1242 - SHOULD be used on messages sent in direct response to another
1243 message by an automatic process,
1244
1245 - MUST NOT be used on manually-generated messages,
1246
1247 - MAY be used on Delivery Status Notifications (DSNs) and Message
1248 Disposition Notifications (MDNs),
1249
1250 - MUST NOT be used on messages generated by automatic or periodic
1251 processes, except for messages which are automatic responses to
1252 other messages.
1253
3e46c1aa
PH
1254PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1255 to the default Received: header definition.
456682f5 1256
49826d12
PH
1257PH/12 Added log selector acl_warn_skipped (default on).
1258
eba0c039
PH
1259PH/13 After a successful wildlsearch lookup, discard the values of numeric
1260 variables because (a) they are in the wrong storage pool and (b) even if
1261 they were copied, it wouldn't work properly because of the caching.
1262
a0d6ba8a
PH
1263PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1264 checking when decoding. Apparently there are clients that generate
1265 overlong encoded strings. Why am I not surprised?
1266
f0917727
PH
1267PH/15 If the first argument of "${if match_address" was not empty, but did not
1268 contain an "@" character, Exim crashed. Now it writes a panic log message
1269 and treats the condition as false.
1270
096fee00
PH
1271PH/16 In autoreply, treat an empty string for "once" the same as unset.
1272
024bd3c2
PH
1273PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1274 extension "envelope-auth". The code is finished and in agreement with
1275 other implementations, but there is no documentation so far and in fact,
1276 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1277 not changing the active code.
1278
1279 Print executed "if" and "elsif" statements when debugging is used. This
1280 helps a great deal to understand what a filter does.
1281
1282 Document more things not specified clearly in RFC3028. I had all this
1283 sorted out, when out of a sudden new issues came to my mind. Oops."
1284
df199fec
PH
1285PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1286 (Bugzilla #53).
1287
d27f1df3
PH
1288PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1289 canonical form (as documented). However, after a host name lookup from
1290 the IP address, check_host() was doing a simple string comparison with
1291 addresses acquired from the DNS when checking that the found name did
1292 have the original IP as one of its addresses. Since any found IPv6
1293 addresses are likely to be in abbreviated form, the comparison could
1294 fail. Luckily, there already exists a function for doing the comparison
1295 by converting both addresses to binary, so now that is used instead of
1296 the text comparison.
1297
96776534
PH
1298PH/20 There was another similar case to PH/19, when a complete host name was
1299 given in a host list; looking up its IP address could give an abbreviated
1300 form, whereas the current host's name might or might not be abbreviated.
1301 The same fix has been applied.
1302
5de37277 1303
9a799bc0
PH
1304Exim version 4.54
1305-----------------
1306
1307PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1308 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1309 It now does.
1310
99a4b039
PH
1311PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1312 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1313
1314PH/03 Typo: missing ".o" in src/pcre/Makefile.
1315
4b233853
PH
1316PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1317 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1318 Also, for "Auto-Submitted", treat anything other than "no" as
1319 non-personal, in accordance with RFC 3834. (Previously it treated
1320 anything starting "auto-" as non-personal.)
1321
8857ccfd
PH
1322TF/01 The control=submission/name=... option had a problem with syntax
1323 errors if the name included a slash character. The /name= option
1324 now slurps the rest of the string, so it can include any characters
1325 but it must come last in the list of options (after /sender_retain
1326 or /domain=).
1327
433a2980
PH
1328PH/05 Some modifications to the interface to the fake nameserver for the new
1329 testing suite.
1330
3e46c1aa 1331
9a799bc0 1332
e3a311ba
TK
1333Exim version 4.53
1334-----------------
1335
1336TK/01 Added the "success_on_redirect" address verification option. See
1337 NewStuff for rationale and an example.
1338
13b685f9
PH
1339PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1340
395ff96d
PH
1341PH/02 Patch to exigrep to allow it to work on syslog lines.
1342
5b68f6e4
PH
1343PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1344 fread() to skip over the body file's header line, because in Cygwin the
1345 header line is locked and is inaccessible.
1346
1ab52c69
PH
1347PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1348 co-exist for some time) to make it clear that it is the Exim ID that is
1349 referenced, not the Message-ID: header line.
1350
b07e6aa3
PH
1351PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1352 string_format() function, because snprintf() does not exist on all
1353 operating systems.
1354
254e032f
PH
1355PH/06 The use of forbid_filter_existstest now also locks out the use of the
1356 ${stat: expansion item.
1357
3af76a81
PH
1358PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1359 protocol synchronization error", to keep the pedants happy.
1360
2548ba04
PH
1361PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1362 well as for IRIX systems, when gcc is being used. See the host.c source
1363 file for comments.
1364
b6c6011d
PH
1365PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1366
cf39cf57
PH
1367PH/10 Named domain lists were not working if used in a queue_smtp_domains
1368 setting.
1369
f1513293
PH
1370PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1371 transport and to the smtp transport in LMTP mode.
1372
727549a4
PH
1373TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1374
af46795e
PH
1375PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1376 run a filter in a subprocess. This could lead to confusion in subsequent
1377 lookups in the parent process. There should also be a search_tidyup() at
1378 the end of the subprocess.
1379
d7b47fd0
PH
1380PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1381 only if the host matched helo_try_verify_hosts, which caused the
1382 verification to occur when the EHLO/HELO command was issued. The ACL just
1383 tested the remembered result. Now, if a previous verification attempt has
1384 not happened, "verify = helo" does it there and then.
1385
ee744174
JJ
1386JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1387
b582ab87
PH
1388TK/03 Fix log output including CR from clamd.
1389
41a13e0a
PH
1390PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1391 exist provoked a memory error which could cause a segfault.
1392
f625cc5a
PH
1393PH/15 Installed PCRE 6.2
1394
1395PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1396
21f7af35
PH
1397PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1398 of the problem. Specifically, suggested +O2 rather than +O1 for the
1399 HP-UX compiler.
1400
31480e42
PH
1401PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1402
2d280592
PH
1403PH/20 If a delivery was routed to a non-standard port by means of an SRV
1404 record, the port was not correctly logged when the outgoing_port log
1405 selector was set (it logged the transort's default port).
1406
7cd1141b
PH
1407PH/21 Added support for host-specific ports to manualroute, queryprogram,
1408 fallback_hosts, and "hosts" in the smtp transport.
1409
1410PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1411 host errors such as "Connection refused".
1412
750af86e
PH
1413PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1414 authentication with radiusclient 0.4.9:
1415
1416 - Error returned from rc_read_config was caught wrongly
1417 - Username/password not passed on to radius server due to wrong length.
1418
1419 The presumption is that some radiusclient API changes for 4.51/PH/17
1420 were not taken care of correctly. The code is still untested by me (my
1421 Linux distribution still has 0.3.2 of radiusclient), but it was
1422 contributed by a Radius user.
1423
1424PH/24 When doing a callout, the value of $domain wasn't set correctly when
1425 expanding the "port" option of the smtp transport.
1426
4304270b
TK
1427TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1428 while reading a MIME header. Thanks to Tom Hughes for a patch.
1429
750af86e
PH
1430PH/24 Include config.h inside local_scan.h so that configuration settings are
1431 available.
1432
64ffc24f
PH
1433PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1434 that in an ACL for RCPT (for example), you can examine exactly what was
1435 received.
1436
5dd9625b
PH
1437PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1438 commands, but it was not correctly comparing the address with the actual
1439 client host address. Thus, it would show the EHLO address in Received:
1440 header lines when this was not necessary.
1441
5591031b
PH
1442PH/27 Added the % operator to ${eval:}.
1443
ba18e66a
PH
1444PH/28 Exim tries to create and chdir to its spool directory when it starts;
1445 it should be ignoring failures (because with -C, for example, it has lost
1446 privilege). It wasn't ignoring creation failures other than "already
1447 exists".
1448
9cec981f
PH
1449PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1450 -bV or -d is used.
1451
aa2b5c79
PH
1452PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1453 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1454 too many continuations, the temporary file was not being removed, and the
1455 return code was incorrect.
aa2b5c79 1456
48a53b7f
PH
1457PH/31 Missing "BOOL" in function definition in filtertest.c.
1458
1c59d63b
PH
1459PH/32 Applied Sieve patches from the maintainer.
1460
671012da
TK
1461TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1462
1509d3a8
PH
1463PH/33 Added "verify = not_blind".
1464
1465PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1466 Local/Makefile (with some defaults set). These are used in built scripts
1467 such as exicyclog, but they have never been used in the exim_install
1468 script (though there are many overriding facilities there). I have
1469 arranged that the exim_install script now takes note of these two
1470 settings.
1471
1472PH/35 Installed configuration files for Dragonfly.
1473
2fe1a124
PH
1474PH/36 When a locally submitted message by a trusted user did not contain a
1475 From: header, and the sender address was obtained from -f or from an SMTP
1476 MAIL command, and the trusted user did not use -F to supply a sender
1477 name, $originator_name was incorrectly used when constructing a From:
1478 header. Furthermore, $originator_name was used for submission mode
1479 messages from external hosts without From: headers in a similar way,
1480 which is clearly wrong.
1481
8800895a
PH
1482PH/37 Added control=suppress_local_fixups.
1483
ccfdb010
PH
1484PH/38 When log_selector = +received_sender was set, and the addition of the
1485 sender made the log line's construction buffer exactly full, or one byte
1486 less than full, an overflow happened when the terminating "\n" was
1487 subsequently added.
1488
1130bfb0
PH
1489PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1490 when the result of a list match is failure because a DNS lookup failed.
1491
ebcb507f
PH
1492PH/40 RM_COMMAND is now used in the building process.
1493
c35e155c
PH
1494PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1495 the "build-* directories that it finds.
1496
95d1f782
PH
1497PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1498 address in a domain literal was a prefix of an interface address.
1499
fd6de02e
PH
1500PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1501 when verifying a sender address, unless rewrite_headers is false.
1502
58de37c5
PH
1503PH/44 Wrote a long comment about why errors_to addresses are verified as
1504 recipients, not senders.
1505
261cf466
TF
1506TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1507 the ratelimit ACL was added.
1508
3ee512ff
PH
1509PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1510
e08c430f
PH
1511PH/46 Added extra information about PostgreSQL errors to the error string.
1512
bef5a11f
PH
1513PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1514 avoiding the need to install special zones in a real server. This is
1515 backwards compatible; if it can't find the fake resolver, it drops back.
1516 Thus, both old and new test suites can be run.
1517
7546de58
TF
1518TF/02 Added util/ratelimit.pl
1519
e5d5a95f
TF
1520TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1521 clock is set back in time.
1522
2e88a017
TF
1523TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1524 Candler <B.Candler@pobox.com>.
1525
a5f65aa4
TF
1526TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1527 OK for addresses that are the result of redirections.
1528
e7726cbf
PH
1529PH/48 A number of further additions for the benefit of the new test suite,
1530 including a fake gethostbyname() that interfaces to the fake DNS resolver
1531 (see PH/47 above).
1532
a7fdad5b
TF
1533TF/06 The fix for widen_domains has also been applied to qualify_single and
1534 search_parents which are the other dnslookup options that can cause
1535 header rewrites.
1536
6af56900
PH
1537PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1538 type ("H").
1539
0925ede6
PH
1540PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1541
66afa403
TF
1542TF/07 Exim produced the error message "an SRV record indicated no SMTP
1543 service" if it encountered an MX record with an empty target hostname.
1544 The message is now "an MX or SRV record indicated no SMTP service".
1545
0154e85a
TF
1546TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1547 if the DNS of the sending site is misconfigured. This is quite a
1548 common situation. This change restores the behaviour of treating a
1549 helo verification defer as a failure.
1550
16f12c76
PH
1551PH/51 If self=fail was set on a router, the bounce message did not include the
1552 actual error message.
1553
bbe902f0 1554
e5a9dba6
PH
1555Exim version 4.52
1556-----------------
1557
1558TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1559
22c3b60b
PH
1560PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1561 command itself ended in error, the underlying message about the transport
1562 filter timeout was being overwritten with the pipe command error. Now the
1563 underlying error message should be appended to the second error message.
1564
06a9b4b5
PH
1565TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1566
c1ac6996
PH
1567PH/02 Reduce the amount of output that "make" produces by default. Full output
1568 can still be requested.
1569
9c7a242c
PH
1570PH/03 The warning log line about a condition test deferring for a "warn" verb
1571 was being output only once per connection, rather than after each
1572 occurrence (because it was using the same function as for successful
1573 "warn" verbs). This seems wrong, so I have changed it.
1574
87ba3f5f
PH
1575TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1576 it should not have, which might have caused a crash in the right
1577 circumstances, but probably never did.
1578
1579PH/04 Installed a modified version of Tony Finch's patch to make submission
1580 mode fix the return path as well as the Sender: header line, and to
1581 add a /name= option so that you can make the user's friendly name appear
1582 in the header line.
1583
29aba418
TF
1584TF/03 Added the control = fakedefer ACL modifier.
1585
fe0dab11
TF
1586TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1587 Mark Lowes for thorough testing.
870f6ba8 1588
11d337a4
TK
1589TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1590
1591TK/03 Merged latest SRS patch from Miles Wilton.
1592
415c8f3b
PH
1593PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1594 with the definition in sysexits.h (which is #included earlier).
1595 Fortunately, Exim does not actually use EX_OK. The code used to try to
1596 preserve the sysexits.h value, by assumimg that macro definitions were
1597 scanned for macro replacements. I have been disabused of this notion,
1598 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1599
958541e9
PH
1600PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1601 in the smtp transport. When a block could not be written in a single
1602 write() function, the timeout was being re-applied to each part-write.
1603 This seems wrong - if the receiver was accepting one byte at a time it
1604 would take for ever. The timeout is now adjusted when this happens. It
1605 doesn't have to be particularly precise.
1606
c206415f
TK
1607TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1608 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1609
2a4be8f9
PH
1610PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1611 without a domain if the check to <postmaster@domain> fails.
1612
1cba11c5
SC
1613SC/01 Eximstats: added -xls and the ability to specify output files
1614 (patch written by Frank Heydlauf).
1615
1616SC/02 Eximstats: use FileHandles for outputing results.
1617
1618SC/03 Eximstats: allow any combination of xls, txt, and html output.
1619
1620SC/04 Eximstats: fixed display of large numbers with -nvr option
1621
1622SC/05 Eximstats: fixed merging of reports with empty tables.
1623
1624SC/06 Eximstats: added the -include_original_destination flag
1625
1626SC/07 Eximstats: removed tabs and trailing whitespace.
1627
1005d00e
TK
1628TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1629
1630TK/06 MBOX spool code: Add real "From " MBOX separator line
1631 so the .eml file is really in mbox format (even though
1632 most programs do not really care). Patch from Alex Miller.
1633
1634TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1635 The latter is generated from $received_to and is only set if the
1636 message has one envelope recipient. SA can use these headers,
1637 obviously out-of-the-box. Patch from Alex Miller.
1638
9b4768fa
PH
1639PH/08 The ${def test on a variable was returning false if the variable's
1640 value was "0", contrary to what the specification has always said!
1641 The result should be true unless the variable is empty.
1642
1643PH/09 The syntax error of a character other than { following "${if
1644 def:variable_name" (after optional whitespace) was not being diagnosed.
1645 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1646 accidental colon was present, for example, could give incorrect results.
1647
0d7eb84a
PH
1648PH/10 Tidied the code in a number of places where the st_size field of a stat()
1649 result is used (not including appendfile, where other changes are about
1650 to be made).
1651
1652PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1653 This involved changing a lot of size variables from int to off_t. It
1654 should work with maildirs and everything.
1655
40727bee
TK
1656TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1657 spamd dying while we are connected to it.
1658
554d2369
TF
1659TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1660 <jgh@wizmail.org>
1661
1f922db1
PH
1662PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1663 function for BDB 4.3.
1664
ef213c3b
PH
1665PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1666
8ac170f3
PH
1667PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1668 the sources for PCRE have been re-arranged and more files are now
1669 involved.
1670
b1c749bb
PH
1671PH/15 The code I had for printing potentially long long variables in PH/11
1672 above was not the best (it lost precision). The length of off_t variables
1673 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1674 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1675 to be "long long int" or "long int". This is needed for the internal
1676 formatting function string_vformat().
b1c749bb 1677
4aac9b49
PH
1678PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1679 the configuration file to be ":syslog", then the script "guesses" where
1680 the logs files are, rather than using the compiled in default. In our
1681 case the guess is not the same as the compiled default, so the script
1682 suddenly stopped working when I started to use syslog. The patch checks
1683 to see if log_file_path is "". If so, it attempts to read it from exim
1684 with no configuration file to get the compiled in version, before it
1685 falls back to the previous guessing code."
1686
294520c8
TK
1687TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1688 implementing BATV in an Exim configuration. See NewStuff for the gory
1689 details.
1690
5bd022fe
PH
1691PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1692 Makefile that are specific to HP-UX.
1693
90e9ce59
PH
1694PH/18 If the "use_postmaster" option was set for a recipient callout together
1695 with the "random" option, the postmaster address was used as the MAIL
1696 FROM address for the random test, but not for the subsequent recipient
1697 test. It is now used for both.
1698
5ea81592
PH
1699PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1700 patch removes a few documentation additions to RFC 3028, because the
1701 latest draft now contains them. It adds the new en;ascii-case comparator
1702 and a new error check for 8bit text in MIME parts. Comparator and
1703 require names are now matched exactly. I enabled the subaddress
1704 extension, but it is not well tested yet (read: it works for me)."
1705
c6c2dc1d
PH
1706PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1707 rework some of the code of TK/09 above to avoid the hardwired use of
1708 "%lld" and "long long". Replaced the call to snprintf() with a call to
1709 string_vformat().
1710
fffffe4c
PH
1711PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1712 records point to non-existent hosts", "retry timeout exceeded", and
1713 "retry time not reached for any host after a long failure period".
ca02eafb 1714
9a26b6b2
PH
1715PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1716 experimental DomainKeys support:
1717
1718 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1719 (2) On an error such as an illegally used "control", the wrong name for
1720 the control was given.
1721
1722 These problems did NOT occur unless DomainKeys support was compiled.
1723
4aee0225
PH
1724PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1725
32d668a5
PH
1726PH/24 Added ${if match_ip condition.
1727
8187c3f3
PH
1728PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1729 databases so that it will be absolutely obvious if a crash occurs in the
1730 DB library. This is a regular occurrence (often caused by mis-matched
1731 db.h files).
1732
ff790e47 1733PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1734 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1735 picked up on a user's system that detects such things. There doesn't seem
1736 to be a gcc warning option for this - only an attribute that has to be
1737 put on the function's prototype. It seems that in Fedora Core 4 they have
1738 set this on a number of new functions. No doubt there will be more in due
1739 course.
ff790e47 1740
5417f6d1
PH
1741PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1742 specify a transport. However, if an address that was verified by such a
1743 router was the subject of a callout, Exim crashed because it tried to
1744 read the rcpt_include_affixes from the non-existent transport. Now it
1745 just assumes that the setting of that option is false. This bug was
1746 introduced by 4.51/PH/31.
1747
59cf8544
PH
1748PH/28 Changed -d+all to exclude +memory, because that information is very
1749 rarely of interest, but it makes the output a lot bigger. People tend to
1750 do -d+all out of habit.
1751
e7ad8a65
PH
1752PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1753 code in os-type was giving problems when libc.so lives in lib64, like on
1754 x86_64 Fedora Core.
1755
ade42478
PH
1756PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1757 aren't the modern standard, and it seems that some systems' include files
1758 don't always have them. Exim was already checking for some of the newer
1759 ones like T_AAAA, and defining it itself. I've added checks for all the
1760 record types that Exim uses.
1761
182ad5cf
PH
1762PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1763 not automatically generating a new one, as it is supposed to. This
1764 prevented TLS from working. If the file did exist, but contained invalid
1765 data, a new version was generated, as expected. It was only the case of a
1766 non-existent file that was broken.
1767
b0d9fc80
TK
1768TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1769 with a change in libdomainkeys > 0.64.
1770
1771TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1772 from DNS. If the selector record carries the flag, it now has
1773 precedence over the domain-wide flag.
1774
1775TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1776
47c7a64a
PH
1777PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1778 the use of a port name that isn't defined in /etc/services) occurred, the
1779 message was deferred as in a normal delivery, and thus remained on the
1780 spool, instead of being failed because of the mua_wrapper setting. This
1781 is now fixed, and I tidied up some of the mua_wrapper messages at the
1782 same time.
1783
a388bce4
SC
1784SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1785 the messages in a hash of arrays rather than using individual hashes.
1786 This is a bit cleaner and results in dramatic memory savings, albeit
1787 at a slight CPU cost.
1788
1789SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1790 as requested by Marc Sherman.
1791
1792SC/10 Eximstats: added histograms for user specified patterns as requested
1793 by Marc Sherman.
1794
0793e4ed
SC
1795SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1796
c58b88df
PH
1797PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1798 fopen() in the content-scanning modules that did not already have it.
1799
e7ad8a65 1800
7982096b
PH
1801Exim version 4.51
1802-----------------
1803
1a46a8c5
PH
1804TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1805 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1806
2f079f46 1807TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1808
1809TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1810
1811PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1812 to test Sieve filters that use "vacation".
1813
1814PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1815 that changes the way the GnuTLS parameters are stored in the cache file.
1816 The new format can be generated externally. For backward compatibility,
1817 if the data in the cache doesn't make sense, Exim assumes it has read an
1818 old-format file, and it generates new data and writes a new file. This
1819 means that you can't go back to an older release without removing the
1820 file.
1821
1822PH/03 A redirect router that has both "unseen" and "one_time" set does not
1823 work if there are any delivery delays because "one_time" forces the
1824 parent to be marked "delivered", so its unseen clone is never tried
1825 again. For this reason, Exim now forbids the simultaneous setting of
1826 these two options.
1827
1828PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1829 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1830 entry if you want to know the details. The fix, however, neglected to
1831 consider the case when local delivery batching is involved. The test for
1832 "previously delivered" was not happening when checking to see if an
1833 address could be batched with a previous (undelivered) one; under
1834 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1835 address.
1a46a8c5
PH
1836
1837PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1838 in its include files, and this causes problems building Exim.
1839
1840PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1841 header_syntax) but Exim was just ignoring anything given after a slash.
1842 In particular, this caused confusion with an attempt to use "verify =
1843 reverse_host_lookup/defer_ok". An error is now given when options are
1844 supplied for verify items that do not have them. (Maybe reverse_host_
1845 lookup should have a defer_ok option, but that's a different point.)
1846
1847PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1848 defined by RFC 821) to 2048, because there were problems with some AUTH
1849 commands, and RFC 1869 says the size should be increased for extended
1850 SMTP commands that take arguments.
1851
1852PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1853 Finch).
1854
1855PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1856 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1857
49c2d5ea
PH
1858PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1859 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1860 whatever). Otherwise the password may appear in the log. Following change
1861 PH/42 below, there is no longer a chance of it appearing in a bounce
1862 message.
49c2d5ea 1863
bf759a8b
PH
1864PH/11 Installed exipick version 20050225.0 from John Jetmore.
1865
83364d30
PH
1866PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1867 of its addresses was ever tried. (Bugzilla bug #2.)
1868
7999bbd7
PH
1869PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1870 the result incorrectly in the debug output. (It correctly added a newline
1871 to what was transported.)
1872
7dbf77c9
PH
1873TF/01 Added $received_time.
1874
74e0617f
PH
1875PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1876 commented out examples of how to interface to a virus scanner and to
1877 SpamAssassin. Also added commented examples of av_scanner and
1878 spamd_address settings.
1879
2f079f46
PH
1880PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1881 and controls are allowed in which ACLs. There were a couple of minor
1882 errors. Some of the entries in the conditions table (which is a table of
1883 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1884 negation of where the condition IS allowed.
1885
8c841523
PH
1886PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1887
7766a4f0
PH
1888PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1889 header file does not have a version number, so I've had to invent a new
1890 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1891 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1892 radiusclient), but it was contributed by a Radius user.
1893
8b417f2c
PH
1894PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1895 files or directories, for OpenSSL.
1896
901f42cb
PH
1897PH/19 When an Exim process that is running as root has to create an Exim log
1898 file, it does so in a subprocess that runs as exim:exim so as to get the
1899 ownership right at creation (otherwise, other Exim processes might see
1900 the file with the wrong ownership). There was no test for failure of this
1901 fork() call, which would lead to the process getting stuck as it waited
1902 for a non-existent subprocess. Forks do occasionally fail when resources
1903 run out. I reviewed all the other calls to fork(); they all seem to check
1904 for failure.
1905
f9b9210e
PH
1906PH/20 When checking for unexpected SMTP input at connect time (before writing
1907 the banner), Exim was not dealing correctly with a non-positive return
1908 from the read() function. If the client had disconnected by this time,
1909 the result was a log entry for a synchronization error with an empty
1910 string after "input=" when read() returned zero. If read() returned -1
1911 (an event I could not check), uninitialized data bytes were printed.
1912 There were reports of junk text (parts of files, etc) appearing after
1913 "input=".
1914
54cdb463
PH
1915PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1916
cf00dad6
PH
1917PH/22 Added support for macro redefinition, and (re)definition in between
1918 driver and ACL definitions.
1919
acb1b346
PH
1920PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1921 forgetting to use the resulting value; it was using the unexpanded value.
1922
c5ddb310
PH
1923PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1924 hadn't been configured. The fix is from Juergen Kreileder, who
1925 understands it better than I do:
1926
1927 "Here's what I see happening with three configured cyrus_sasl
1928 authenticators configured (plain, login, cram-md5):
1929
1930 On startup auth_cyrus_sasl_init() gets called for each of these.
1931 This means three calls to sasl_listmech() without a specified mech_list.
1932 => SASL tests which mechs of all available mechs actually work
1933 => three warnings about OTP not working
1934 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1935
1936 With the patch, sasl_listmech() also gets called three times. But now
1937 SASL's mech_list option is set to the server_mech specified in the the
1938 authenticator. Or in other words, the answer from sasl_listmech()
1939 gets limited to just the mech you're testing for (which is different
1940 for each call.)
1941 => the return list contains just 'plain' or 'login', 'cram-md5' or
1942 nothing depending on the value of ob->server_mech.
1943
1944 I've just tested the patch: Authentication still works fine,
1945 unavailable mechs specified in the exim configuration are still
1946 caught, and the auth.log warnings about OTP are gone."
1947
31619da6
PH
1948PH/25 When debugging is enabled, the contents of the command line are added
1949 to the debugging output, even when log_selector=+arguments is not
1950 specified.
1951
bebaf0fc
PH
1952PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1953 answer is "GNU", and only if the return is "GNU/something" is the answer
1954 "Linux".
1955
475fe28a
PH
1956PH/27 $acl_verify_message is now set immediately after the failure of a
1957 verification in an ACL, and so is available in subsequent modifiers. In
1958 particular, the message can be preserved by coding like this:
1959
1960 warn !verify = sender
1961 set acl_m0 = $acl_verify_message
1962
1963 Previously, $acl_verify_message was set only while expanding "message"
1964 and "log_message" when a very denied access.
1965
7e8bec7a
PH
1966PH/28 Modified OS/os.c-Linux with
1967
1968 -#ifndef OS_LOAD_AVERAGE
1969 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1970
1971 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1972 nomenclature these days.)
1973
e4a89c47
PH
1974PH/29 Installed patch from the Sieve maintainer that adds the options
1975 sieve_useraddress and sieve_subaddress to the redirect router.
1976
5ca2a9a1
PH
1977PH/30 In these circumstances:
1978 . Two addresses routed to the same list of hosts;
1979 . First host does not offer TLS;
1980 . First host accepts first address;
1981 . First host gives temporary error to second address;
1982 . Second host offers TLS and a TLS session is established;
1983 . Second host accepts second address.
1984 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1985 and peerdn, if requested) that were in fact used only for the second
1986 address.
7e8bec7a 1987
c688b954
PH
1988PH/31 When doing a callout as part of verifying an address, Exim was not paying
1989 attention to any local part prefix or suffix that was matched by the
1990 router that accepted the address. It now behaves in the same way as it
1991 does for delivery: the affixes are removed from the local part unless
1992 rcpt_include_affixes is set on the transport.
1993
fed77020
PH
1994PH/32 Add the sender address, as F=<...>, to the log line when logging a
1995 timeout during the DATA phase of an incoming message.
1996
7fe1560f
PH
1997PH/33 Sieve envelope tests were broken for match types other than :is. I have
1998 applied a patch sanctioned by the Sieve maintainer.
c688b954 1999
ebb6e6d5
PH
2000PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2001 the uid or gid is negative. A case of a negative gid caused this to be
2002 noticed. The fix allows for either to be negative.
2003
9c4e8f60
PH
2004PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2005 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2006 overlooked.
2007
2008PH/36 The change PH/12 above was broken. Fixed it.
2009
d7174846
PH
2010PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2011 the grounds that routing the same address twice would always produce the
2012 same answer. This might have been true once, but it is certainly no
2013 longer true now. Routing a child address may depend on the previous
2014 routing that produced that child. Some complicated redirection strategies
2015 went wrong when messages had multiple recipients, and made Exim's
2016 behaviour dependent on the order in which the addresses were given.
2017
2018 I have moved the duplicate checking until after the routing is complete.
2019 Exim scans the addresses that are assigned to local and remote
2020 transports, and removes any duplicates. This means that more work will be
2021 done, as duplicates will always all be routed, but duplicates are
2022 presumably rare, so I don't expect this is of any significance.
2023
2024 For deliveries to pipes, files, and autoreplies, the duplicate checking
2025 still happens during the routing process, since they are not going to be
2026 routed further.
2027
cfe75fc3
PH
2028PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2029 It corrects a timeout issue with spamd. This is Ian's comment: "The
2030 background is that sometimes spamd either never reads data from a
2031 connection it has accepted, or it never writes response data. The exiscan
2032 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2033 blindly assumes that writes won't block so it may never time out."
2034
be22d70e
PH
2035PH/39 Allow G after quota size as well as K and M.
2036
0612b098
PH
2037PH/40 The value set for $authenticated_id in an authenticator may not contain
2038 binary zeroes or newlines because the value is written to log lines and
2039 to spool files. There was no check on this. Now the value is run through
2040 the string_printing() function so that such characters are converted to
2041 printable escape sequences.
2042
2e0c1448
PH
2043PH/41 $message_linecount is a new variable that contains the total number of
2044 lines in the message. Compare $body_linecount, which is the count for the
2045 body only.
2046
447d236c
PH
2047PH/42 Exim no longer gives details of delivery errors for specific addresses in
2048 bounce and delay warning messages, except in certain special cases, which
2049 are as follows:
2050
2051 (a) An SMTP error message from a remote host;
2052 (b) A message specified in a :fail: redirection;
2053 (c) A message specified in a "fail" command in a system filter;
2054 (d) A message specified in a FAIL return from the queryprogram router;
2055 (e) A message specified by the cannot_route_message router option.
2056
2057 In these cases only, Exim does include the error details in bounce and
2058 warning messages. There are also a few cases where bland messages such
2059 as "unrouteable address" or "local delivery error" are given.
2060
d20976dc
PH
2061PH/43 $value is now also set for the "else" part of a ${run expansion.
2062
f656d135
PH
2063PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2064 being worked on, but at least Exim now implements the latest version to
2065 play with."
2066
2e2a30b4
PH
2067PH/45 In a pipe transport, although a timeout while waiting for the pipe
2068 process to complete was treated as a delivery failure, a timeout while
2069 writing the message to the pipe was logged, but erroneously treated as a
2070 successful delivery. Such timeouts include transport filter timeouts. For
2071 consistency with the overall process timeout, these timeouts are now
2072 treated as errors, giving rise to delivery failures by default. However,
2073 there is now a new Boolean option for the pipe transport called
2074 timeout_defer, which, if set TRUE, converts the failures into defers for
2075 both kinds of timeout. A transport filter timeout is now identified in
2076 the log output.
2077
9176e9f0
PH
2078PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2079 systems where "make" and "gmake" are different, calling "gmake" at top
2080 level broke things. I've arranged for the value of $(MAKE) to be passed
2081 from the Makefile to this script so that it can call the same version of
2082 "make".
2083
7982096b 2084
bbe902f0
PH
2085A note about Exim versions 4.44 and 4.50
2086----------------------------------------
2087
2088Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2089changes of various kinds. As a consequence, a big documentation update was
2090needed. This delayed the release for rather longer than seemed good, especially
2091in the light of a couple of (minor) security issues. Therefore, the changes
2092that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2093release. So 4.44 and 4.50 are in effect two different branches that both start
2094from 4.43.
2095
2096I have left the 4.50 change log unchanged; it contains all the changes since
20974.43. The change log for 4.44 is below; many of its items are identical to
2098those for 4.50. This seems to be the most sensible way to preserve the
2099historical information.
2100
2101
f7b63901 2102Exim version 4.50
495ae4b0
PH
2103-----------------
2104
5fe762f6
PH
2105 1. Minor wording change to the doc/README.SIEVE file.
2106
139059f6 2107 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2108 computation of the current number of files was incorrect.
495ae4b0 2109
7086e875
PH
2110 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2111 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2112 place.
2113
35af9f61
PH
2114 4. Give more explanation in the error message when the command for a transport
2115 filter fails to execute.
2116
b668c215
PH
2117 5. There are several places where Exim runs a non-Exim command in a
2118 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2119 was being done only for the command run by the queryprogram router. It is
2120 now done for all such subprocesses. The other cases are: ${run, transport
2121 filters, and the commands run by the lmtp and pipe transports.
2122
a494b1e1
PH
2123 6. Added CONFIGURE_GROUP build-time option.
2124
2125 7. Some older OS have a limit of 256 on the maximum number of file
2126 descriptors. Exim was using setrlimit() to set 1000 as a large value
2127 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2128 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2129
c5fcb476
PH
2130 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2131 was an oversight, and furthermore, ever since the addition of extra
2132 controls (e.g. 4.43/32), the checks on when to allow different forms of
2133 "control" were broken. There should now be diagnostics for all cases when a
2134 control that does not make sense is encountered.
2135
69358f02
PH
2136 9. Added the /retain_sender option to "control=submission".
2137
5be20824
PH
213810. $recipients is now available in the predata ACL (oversight).
2139
eb2c0248
PH
214011. Tidy the search cache before the fork to do a delivery from a message
2141 received from the command line. Otherwise the child will trigger a lookup
2142 failure and thereby defer the delivery if it tries to use (for example) a
2143 cached ldap connection that the parent has called unbind on.
2144
2a3eea10
PH
214512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2146 of $address_data from the recipient verification was clobbered by the
2147 sender verification.
2148
214913. The value of address_data from a sender verification is now available in
2150 $sender_address_data in subsequent conditions in the ACL statement.
2151
23c7ff99
PH
215214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2153
4deaf07d
PH
215415. Added a new option "connect=<time>" to callout options, to set a different
2155 connection timeout.
2156
926e1192
PH
215716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2158 was its contents. (It was OK if the option was not defined at all.)
2159
650edc6f
PH
216017. A "Completed" log line is now written for messages that are removed from
2161 the spool by the -Mrm option.
2162
2c7db3f5
PH
216318. New variables $sender_verify_failure and $recipient_verify_failure contain
2164 information about exactly what failed.
2165
3d235903
PH
216619. Added -dd to debug only the daemon process.
2167
7c7ad977
PH
216820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2169 handles timeouts, both on the server side and network timeouts. Renamed the
2170 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2171
981756db
PH
217221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2173 It is now set to "smtps".
2174
d4eb88df
PH
217522. $host_address is now set to the target address during the checking of
2176 ignore_target_hosts.
2177
217823. When checking ignore_target_hosts for an ipliteral router, no host name was
2179 being passed; this would have caused $sender_host_name to have been used if
2180 matching the list had actually called for a host name (not very likely,
2181 since this list is usually IP addresses). A host name is now passed as
2182 "[x.x.x.x]".
2183
7d468ab8
PH
218424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2185 code that specifies a non-restarting handler (typically sigaction() in
2186 modern systems) in an attempt to fix a rare and obscure crash bug.
2187
218825. Narrowed the window for a race in the daemon that could cause it to ignore
2189 SIGCHLD signals. This is not a major problem, because they are used only to
2190 wake it up if nothing else does.
2191
62c0818f
PH
219226. A malformed maildirsize file could cause Exim to calculate negative values
2193 for the mailbox size or file count. Odd effects could occur as a result.
2194 The maildirsize information is now recalculated if the size or filecount
2195 end up negative.
2196
26034054
PH
219727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2198 support for a long time. Removed HAVE_SYS_VFS_H.
2199
af66f652
PH
220028. Installed the latest version of exipick from John Jetmore.
2201
90af77f4
PH
220229. In an address list, if the pattern was not a regular expression, an empty
2203 subject address (from a bounce message) matched only if the pattern was an
2204 empty string. Non-empty patterns were not even tested. This was the wrong
2205 because it is perfectly reasonable to use an empty address as part of a
2206 database query. An empty address is now tested by patterns that are
2207 lookups. However, all the other forms of pattern expect the subject to
2208 contain a local part and a domain, and therefore, for them, an empty
2209 address still always fails if the pattern is not itself empty.
2210
d8ef3577
PH
221130. Exim went into a mad DNS loop when attempting to do a callout where the
2212 host was specified on an smtp transport, and looking it up yielded more
2213 than one IP address.
2214
5cb8cbc6
PH
221531. Re-factored the code for checking spool and log partition space into a
2216 function that finds that data and another that does the check. The former
2217 is then used to implement four new variables: $spool_space, $log_space,
2218 $spool_inodes, and $log_inodes.
2219
14702f5b
PH
222032. The RFC2047 encoding function was originally intended for short strings
2221 such as real names; it was not keeping to the 75-character limit for
2222 encoded words that the RFC imposes. It now respects the limit, and
2223 generates multiple encoded words if necessary. To be on the safe side, I
2224 have increased the buffer size for the ${rfc2047: expansion operator from
2225 1024 to 2048 bytes.
2226
063b1e99
PH
222733. It is now permitted to omit both strings after an "if" condition; if the
2228 condition is true, the result is "true". As before, when the second string
2229 is omitted, a false condition yields an empty string. This makes it less
2230 cumbersome to write custom ACL and router conditions.
2231
652e1b65
PH
223234. Failure to deliver a bounce message always caused it to be frozen, even if
2233 there was an errors_to setting on the router. The errors_to setting is now
2234 respected.
2235
6f0c9a4f
PH
223635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2237 canonical form (fully expanded) before being placed in
2238 $sender_host_address.
2239
33397d19
PH
224036. The table in the code that translates DNS record types into text (T_A to
2241 "A" for instance) was missing entries for NS and CNAME. It is just possible
2242 that this could have caused confusion if both these types were looked up
2243 for the same domain, because the text type is used as part of Exim's
2244 per-process caching. But the chance of anyone hitting this buglet seems
2245 very small.
2246
7bb56e1f
PH
224737. The dnsdb lookup has been extended in a number of ways.
2248
2249 (1) There is a new type, "zns", which walks up the domain tree until it
2250 finds some nameserver records. It should be used with care.
2251
ea3bc19b
PH
2252 (2) There is a new type, "mxh", which is like "mx" except that it returns
2253 just the host names, not the priorities.
2254
2255 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2256 looked up. The behaviour when one of the lookups defers can be
2257 controlled by a keyword.
7bb56e1f 2258
ea3bc19b 2259 (4) It is now possible to specify the separator character for use when
7bb56e1f 2260 multiple records are returned.
33397d19 2261
0bcb2a0e
PH
226238. The dnslists ACL condition has been extended: it is now possible to supply
2263 a list of IP addresses and/or domains to be looked up in a particular DNS
2264 domain.
2265
2ac0e484
PH
226639. Added log_selector=+queue_time_overall.
2267
4e1fde53
PH
226840. When running the queue in the test harness, wait just a tad after forking a
2269 delivery process, to get repeatability of debugging output.
2270
de365ded
PH
227141. Include certificate and key file names in error message when GnuTLS fails
2272 to set them up, because the GnuTLS error message doesn't include the name
2273 of the failing file when there is a problem reading it.
2274
f05da2e8
PH
227542. Allow both -bf and -bF in the same test run.
2276
d6453af2
PH
227743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2278
f7b63901
PH
227944. The "Exiscan patch" is now merged into the mainline Exim source.
2280
228145. Sometimes the final signoff response after QUIT could fail to get
2282 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2283 < 0 before doing a fflush(). This bug looks as though it goes back to the
2284 introduction of TLS in release 3.20, but "sometimes" must have been rare
2285 because the tests only now provoked it.
2286
a444213a
PH
228746. Reset the locale to "C" after calling embedded Perl, in case it was changed
2288 (this can affect the format of dates).
2289
0ec020ea
PH
229047. exim_tidydb, when checking for the continued existence of a message for
2291 which it has found a message-specific retry record, was not finding
2292 messages that were in split spool directories. Consequently, it was
2293 deleting retry records that should have stayed in existence.
2294
b1206957
PH
229548. Steve fixed some bugs in eximstats.
2296
229749. The SPA authentication driver was not abandoning authentication and moving
2298 on to the next authenticator when an expansion was forced to fail,
2299 contradicting the general specification for all authenticators. Instead it
2300 was generating a temporary error. It now behaves as specified.
2301
26dd5a95
PH
230250. The default ordering of permitted cipher suites for GnuTLS was pessimal
2303 (the order specifies the preference for clients). The order is now AES256,
2304 AES128, 3DES, ARCFOUR128.
2305
343b2385
PH
230651. Small patch to Sieve code - explicitly set From: when generating an
2307 autoreply.
2308
1c5466b9
PH
230952. Exim crashed if a remote delivery caused a very long error message to be
2310 recorded - for instance if somebody sent an entire SpamAssassin report back
2311 as a large number of 550 error lines. This bug was coincidentally fixed by
2312 increasing the size of one of Exim's internal buffers (big_buffer) that
2313 happened as part of the Exiscan merge. However, to be on the safe side, I
2314 have made the code more robust (and fixed the comments that describe what
2315 is going on).
2316
55ee9ee3
PH
231753. Now that there can be additional text after "Completed" in log lines (if
2318 the queue_time_overall log selector is set), a one-byte patch to exigrep
2319 was needed to allow it to recognize "Completed" as not the last thing in
2320 the line.
2321
d38f8232
PH
232254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2323 patch that reportedly fixes this has been added. I am not expert enough to
2324 create a test for it. This is what the patch creator wrote:
2325
2326 "I found a little strange behaviour of ldap code when working with
2327 Windows 2003 AD Domain, where users was placed in more than one
2328 Organization Units. When I tried to give exim partial DN, the exit code
2329 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2330 But simultaneously result of request was absolutely normal ldap result,
2331 so I produce this patch..."
2332
3295e65b
PH
2333 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2334 REFERENCE, so I have modified the code to exclude the patch when that macro
2335 is not defined.
2336
7102e136
PH
233755. Some experimental protocols are using DNS PTR records for new purposes. The
2338 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2339 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2340 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2341 CAN-2005-0021
7102e136 2342
3ca0ba97
PH
234356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2344
c2bcbe20
PH
234557. Double the size of the debug message buffer (to 2048) so that more of very
2346 long debug lines gets shown.
2347
18ce445d
PH
234858. The exicyclog utility now does better if the number of log files to keep
2349 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2350
1f5b4c3d
PH
235159. Two changes related to the smtp_active_hostname option:
2352
2353 (1) $smtp_active_hostname is now available as a variable.
2354 (2) The default for smtp_banner uses $smtp_active_hostname instead
2355 of $primary_hostname.
2356
b975ba52
PH
235760. The host_aton() function is supposed to be passed a string that is known
2358 to be a valid IP address. However, in the case of IPv6 addresses, it was
2359 not checking this. This is a hostage to fortune. Exim now panics and dies
2360 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2361 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2362 components; fortuitously, this particular loophole had already been fixed
2363 by change 4.50/55 above.
2364
2365 If there are any other similar loopholes, the new check in host_aton()
2366 itself should stop them being exploited. The report I received stated that
2367 data on the command line could provoke the exploit when Exim was running as
2368 exim, but did not say which command line option was involved. All I could
2369 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2370 running as the user.
ea3a6f44 2371 CAN-2005-0021
85b87bc2
PH
2372
237361. There was a buffer overflow vulnerability in the SPA authentication code
2374 (which came originally from the Samba project). I have added a test to the
2375 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2376 CAN-2005-0022
b975ba52 2377
17ffcae7
PH
237862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2379 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2380
d95f9fdb
PH
238163. The daemon start-up calls getloadavg() while still root for those OS that
2382 need the first call to be done as root, but it missed one case: when
2383 deliver_queue_load_max is set with deliver_drop_privilege. This is
2384 necessary for the benefit of the queue runner, because there is no re-exec
2385 when deliver_drop_privilege is set.
2386
86b8287f
PH
238764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2388 This has been fixed.
2389
60dc5e56
PH
239065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2391 was in use, was not putting the data itself into the right store pool;
2392 consequently, it could be overwritten for a subsequent message in the same
2393 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2394 the caching.)
2395
533244af
PH
239666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2397
a5a28604
PH
239867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2399 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2400 the function were treating the return as a boolean value, which happened to
2401 work because 0=false and not-0=true, but is not correct code.
2402
7e634d24
PH
240368. The host_aton() function was not handling scoped IPv6 addresses (those
2404 with, for example, "%eth0" on the end) correctly.
2405
3e11c26b
PH
240669. Fixed some compiler warnings in acl.c for the bitmaps specified with
2407 negated items (that is, ~something) in unsigned ints. Some compilers
2408 apparently mutter when there is no cast.
2409
6729cf78
PH
241070. If an address verification called from an ACL failed, and did not produce a
2411 user-specific message (i.e. there was only a "system" message), nothing was
2412 put in $acl_verify_message. In this situation, it now puts the system
2413 message there.
2414
00f00ca5
PH
241571. Change 4.23/11 added synchronization checking at the start of an SMTP
2416 session; change 4.31/43 added the unwanted input to the log line - except
2417 that it did not do this in the start of session case. It now does.
2418
c9bdd01c
PH
241972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2420 This is wrong and can cause the other end to generate a synchronization
2421 error if it is another Exim or anything else that does the synchronization
2422 check. A QUIT command is no longer sent after a timeout.
2423
d43194df
PH
242473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2425 during host lookups.
2426
fe5b5d0b
PH
242774. The defer_ok option of callout verification was not working if it was used
2428 when verifying addresses in header lines, that is, for this case:
2429
2430 verify = header_sender/callout=defer_ok
2431
76a2d7ba
PH
243275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2433 those file descriptors could be used for SMTP connections. If anything
2434 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2435 could be sent to the SMTP client, causing chaos. The daemon now opens
2436 stdin, stdout, and stderr to /dev/null when it puts itself into the
2437 background.
2438
243976. Arrange for output from Perl's "warn" command to be written to Exim's main
2440 log by default. The user can override this with suitable Perl magic.
2441
04f7d5b9
PH
244277. The use of log_message on a "discard" ACL verb, which is supposed to add to
2443 the log message when discard triggers, was not working for the DATA ACL or
2444 for the non-SMTP ACL.
2445
bc60667e
PH
244678. Error message wording change in sieve.c.
2447
bb6e88ff
PH
244879. If smtp_accept_max_per_host was set, the number of connections could be
2449 restricted to fewer than expected, because the daemon was trying to set up
2450 a new connection before checking whether the processes handling previous
2451 connections had finished. The check for completed processes is now done
2452 earlier. On busy systems, this bug wouldn't be noticed because something
2453 else would have woken the daemon, and it would have reaped the completed
2454 process earlier.
2455
1e70f85b
PH
245680. If a message was submitted locally by a user whose login name contained one
2457 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2458 It caused a spool format error. I have fixed the spool reading code. A
2459 related problem was that the "from" clause in the Received: line became
2460 illegal because of the space(s). It is now covered by ${quote_local_part.
2461
246281. Included the latest eximstats from Steve (adds average sizes to HTML Top
2463 tables).
2464
4e01f9d6
PH
246582. Updated OS/Makefile-AIX as per message from Mike Meredith.
2466
1ee1cef2
PH
246783. Patch from Sieve maintainer to fix unterminated string problem in
2468 "vacation" handling.
2469
6e2b4ccc
PH
247084. Some minor changes to the Linux configuration files to help with other
2471 OS variants using glibc.
2472
8e669ac1
PH
247385. One more patch for Sieve to update vacation handling to latest spec.
2474
495ae4b0 2475
bbe902f0
PH
2476----------------------------------------------------
2477See the note above about the 4.44 and 4.50 releases.
2478----------------------------------------------------
2479
2480
2481Exim version 4.44
2482-----------------
2483
2484 1. Change 4.43/35 introduced a bug that caused file counts to be
2485 incorrectly computed when quota_filecount was set in an appendfile
2486 transport
2487
2488 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2489 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2490 place.
2491
2492 3. Give more explanation in the error message when the command for a transport
2493 filter fails to execute.
2494
2495 4. There are several places where Exim runs a non-Exim command in a
2496 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2497 was being done only for the command run by the queryprogram router. It is
2498 now done for all such subprocesses. The other cases are: ${run, transport
2499 filters, and the commands run by the lmtp and pipe transports.
2500
2501 5. Some older OS have a limit of 256 on the maximum number of file
2502 descriptors. Exim was using setrlimit() to set 1000 as a large value
2503 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2504 systems. I've change it so that if it can't get 1000, it tries for 256.
2505
2506 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2507 was an oversight, and furthermore, ever since the addition of extra
2508 controls (e.g. 4.43/32), the checks on when to allow different forms of
2509 "control" were broken. There should now be diagnostics for all cases when a
2510 control that does not make sense is encountered.
2511
2512 7. $recipients is now available in the predata ACL (oversight).
2513
2514 8. Tidy the search cache before the fork to do a delivery from a message
2515 received from the command line. Otherwise the child will trigger a lookup
2516 failure and thereby defer the delivery if it tries to use (for example) a
2517 cached ldap connection that the parent has called unbind on.
2518
2519 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2520 of $address_data from the recipient verification was clobbered by the
2521 sender verification.
2522
252310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2524 was its contents. (It was OK if the option was not defined at all.)
2525
252611. A "Completed" log line is now written for messages that are removed from
2527 the spool by the -Mrm option.
2528
252912. $host_address is now set to the target address during the checking of
2530 ignore_target_hosts.
2531
253213. When checking ignore_target_hosts for an ipliteral router, no host name was
2533 being passed; this would have caused $sender_host_name to have been used if
2534 matching the list had actually called for a host name (not very likely,
2535 since this list is usually IP addresses). A host name is now passed as
2536 "[x.x.x.x]".
2537
253814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2539 code that specifies a non-restarting handler (typically sigaction() in
2540 modern systems) in an attempt to fix a rare and obscure crash bug.
2541
254215. Narrowed the window for a race in the daemon that could cause it to ignore
2543 SIGCHLD signals. This is not a major problem, because they are used only to
2544 wake it up if nothing else does.
2545
254616. A malformed maildirsize file could cause Exim to calculate negative values
2547 for the mailbox size or file count. Odd effects could occur as a result.
2548 The maildirsize information is now recalculated if the size or filecount
2549 end up negative.
2550
255117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2552 support for a long time. Removed HAVE_SYS_VFS_H.
2553
ea3a6f44 255418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2555
255619. Allow an empty sender to be matched against a lookup in an address list.
2557 Previously the only cases considered were a regular expression, or an
2558 empty pattern.
2559
256020. Exim went into a mad DNS lookup loop when doing a callout where the
2561 host was specified on the transport, if the DNS lookup yielded more than
2562 one IP address.
2563
ea3a6f44
NM
256421. The RFC2047 encoding function was originally intended for short strings
2565 such as real names; it was not keeping to the 75-character limit for
2566 encoded words that the RFC imposes. It now respects the limit, and
2567 generates multiple encoded words if necessary. To be on the safe side, I
2568 have increased the buffer size for the ${rfc2047: expansion operator from
2569 1024 to 2048 bytes.
bbe902f0 2570
ea3a6f44
NM
257122. Failure to deliver a bounce message always caused it to be frozen, even if
2572 there was an errors_to setting on the router. The errors_to setting is now
2573 respected.
bbe902f0
PH
2574
257523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2576 canonical form (fully expanded) before being placed in
2577 $sender_host_address.
2578
257924. Updated eximstats to version 1.33
2580
ea3a6f44
NM
258125. Include certificate and key file names in error message when GnuTLS fails
2582 to set them up, because the GnuTLS error message doesn't include the name
2583 of the failing file when there is a problem reading it.
bbe902f0
PH
2584
258526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2586 As per change 25.
bbe902f0 2587
ea3a6f44
NM
258827. Reset the locale to "C" after calling embedded Perl, in case it was changed
2589 (this can affect the format of dates).
bbe902f0 2590
ea3a6f44
NM
259128. exim_tidydb, when checking for the continued existence of a message for
2592 which it has found a message-specific retry record, was not finding
2593 messages that were in split spool directories. Consequently, it was
2594 deleting retry records that should have stayed in existence.
bbe902f0
PH
2595
259629. eximstats updated to version 1.35
2597 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2598 1.35 - bugfix such that pie charts by volume are generated correctly
2599
ea3a6f44
NM
260030. The SPA authentication driver was not abandoning authentication and moving
2601 on to the next authenticator when an expansion was forced to fail,
2602 contradicting the general specification for all authenticators. Instead it
2603 was generating a temporary error. It now behaves as specified.
bbe902f0 2604
ea3a6f44
NM
260531. The default ordering of permitted cipher suites for GnuTLS was pessimal
2606 (the order specifies the preference for clients). The order is now AES256,
2607 AES128, 3DES, ARCFOUR128.
bbe902f0 2608
ea3a6f44
NM
260931. Small patch to Sieve code - explicitly set From: when generating an
2610 autoreply.
bbe902f0 2611
ea3a6f44
NM
261232. Exim crashed if a remote delivery caused a very long error message to be
2613 recorded - for instance if somebody sent an entire SpamAssassin report back
2614 as a large number of 550 error lines. This bug was coincidentally fixed by
2615 increasing the size of one of Exim's internal buffers (big_buffer) that
2616 happened as part of the Exiscan merge. However, to be on the safe side, I
2617 have made the code more robust (and fixed the comments that describe what
2618 is going on).
bbe902f0 2619
ea3a6f44
NM
262033. Some experimental protocols are using DNS PTR records for new purposes. The
2621 keys for these records are domain names, not reversed IP addresses. The
2622 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2623 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2624 CAN-2005-0021
2625
ea3a6f44
NM
262634. The host_aton() function is supposed to be passed a string that is known
2627 to be a valid IP address. However, in the case of IPv6 addresses, it was
2628 not checking this. This is a hostage to fortune. Exim now panics and dies
2629 if the condition is not met. A case was found where this could be provoked
2630 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2631 components; fortuitously, this particular loophole had already been fixed
2632 by change 4.50/55 or 4.44/33 above.
2633
2634 If there are any other similar loopholes, the new check in host_aton()
2635 itself should stop them being exploited. The report I received stated that
2636 data on the command line could provoke the exploit when Exim was running as
2637 exim, but did not say which command line option was involved. All I could
2638 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2639 running as the user.
bbe902f0
PH
2640 CAN-2005-0021
2641
ea3a6f44
NM
264235. There was a buffer overflow vulnerability in the SPA authentication code
2643 (which came originally from the Samba project). I have added a test to the
2644 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2645 CAN-2005-0022
2646
ea3a6f44
NM
264736. The daemon start-up calls getloadavg() while still root for those OS that
2648 need the first call to be done as root, but it missed one case: when
2649 deliver_queue_load_max is set with deliver_drop_privilege. This is
2650 necessary for the benefit of the queue runner, because there is no re-exec
2651 when deliver_drop_privilege is set.
bbe902f0 2652
ea3a6f44
NM
265337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2654 was in use, was not putting the data itself into the right store pool;
2655 consequently, it could be overwritten for a subsequent message in the same
2656 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2657 the caching.)
bbe902f0 2658
ea3a6f44
NM
265938. Sometimes the final signoff response after QUIT could fail to get
2660 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2661 < 0 before doing a fflush(). This bug looks as though it goes back to the
2662 introduction of TLS in release 3.20, but "sometimes" must have been rare
2663 because the tests only now provoked it.
bbe902f0
PH
2664
2665
495ae4b0
PH
2666Exim version 4.43
2667-----------------
2668
2669 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2670 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2671 Now it returns an integer. A number of calls were still expecting a T/F
2672 return. Fortuitously, in all cases, the tests worked in OK situations,
2673 which is the norm. However, things would have gone wrong on any write
2674 failures on the smtp file descriptor. This function is used when sending
2675 messages over SMTP and also when doing verify callouts.
2676
2677 2. When Exim is called to do synchronous delivery of a locally submitted
2678 message (the -odf or -odi options), it no longer closes stderr before doing
2679 the delivery.
2680
2681 3. Implemented the mua_wrapper option.
2682
2683 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2684
2685 5. Implemented the functions header_remove(), header_testname(),
2686 header_add_at_position(), and receive_remove_recipient(), and exported them
2687 to local_scan().
2688
2689 6. If an ACL "warn" statement specified the addition of headers, Exim already
2690 inserted X-ACL-Warn: at the start if there was no header name. However, it
2691 was not making this test for the second and subsequent header lines if
2692 there were newlines in the string. This meant that an invalid header could
2693 be inserted if Exim was badly configured.
2694
2695 7. Allow an ACL "warn" statement to add header lines at the start or after all
2696 the Received: headers, as well as at the end.
2697
2698 8. Added the rcpt_4xx retry error code.
2699
2700 9. Added postmaster_mailfrom=xxx to callout verification option.
2701
270210. Added mailfrom=xxxx to the callout verification option, for verify=
2703 header_sender only.
2704
270511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2706 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2707
270812. Inserted some casts to stop certain compilers warning when using pointer
2709 differences as field lengths or precisions in printf-type calls (mostly
2710 affecting debugging statements).
2711
271213. Added optional readline() support for -be (dynamically loaded).
2713
271414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2715 same clock tick as a message's arrival, so that its received time was the
2716 same as the "first fail" time on the retry record, and that message
2717 remained on the queue past the ultimate address timeout, every queue runner
2718 would try a delivery (because it was past the ultimate address timeout) but
2719 after another failure, the ultimate address timeout, which should have then
2720 bounced the address, did not kick in. This was a "< instead of <=" error;
2721 in most cases the first failure would have been in the next clock tick
2722 after the received time, and all would be well.
2723
272415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2725 being recognized when the domain list was tested by the match_domain
2726 condition in an expansion string.
2727
272816. Added the ${str2b64: operator.
2729
273017. Exim was always calling setrlimit() to set a large limit for the number of
2731 processes, without checking whether the existing limit was already
2732 adequate. (It did check for the limit on file descriptors.) Furthermore,
2733 errors from getrlimit() and setrlimit() were being ignored. Now they are
2734 logged to the main and panic logs, but Exim does carry on, to try to do its
2735 job under whatever limits there are.
2736
273718. Imported PCRE 5.0.
2738
273919. Trivial typo in log message " temporarily refused connection" (the leading
2740 space).
2741
274220. If the log selector return_path_on_delivery was set and an address was
2743 redirected to /dev/null, the delivery process crashed because it assumed
2744 that a return path would always be set for a "successful" delivery. In this
2745 case, the whole delivery is bypassed as an optimization, and therefore no
2746 return path is set.
2747
274821. Internal re-arrangement: the function for sending a challenge and reading
2749 a response while authentication was assuming a zero-terminated challenge
2750 string. It's now changed to take a pointer and a length, to allow for
2751 binary data in such strings.
2752
275322. Added the cyrus_sasl authenticator (code supplied by MBM).
2754
275523. Exim was not respecting finduser_retries when seeking the login of the
2756 uid under which it was called; it was always trying 10 times. (The default
2757 setting of finduser_retries is zero.) Also, it was sleeping after the final
2758 failure, which is pointless.
2759
276024. Implemented tls_on_connect_ports.
2761
276225. Implemented acl_smtp_predata.
2763
276426. If the domain in control=submission is set empty, Exim assumes that the
2765 authenticated id is a complete email address when it generates From: or
2766 Sender: header lines.
2767
276827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2769 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2770 chown and chgrp in /bin and hostname in /usr/bin.
2771
277228. Exim was keeping the "process log" file open after each use, just as it
2773 does for the main log. This opens the possibility of it remaining open for
2774 long periods when the USR1 signal hits a daemon. Occasional processlog
2775 errors were reported, that could have been caused by this. Anyway, it seems
2776 much more sensible not to leave this file open at all, so that is what now
2777 happens.
2778
277929. The long-running daemon process does not normally write to the log once it
2780 has entered its main loop, and it closes the log before doing so. This is
2781 so that log files can straightforwardly be renamed and moved. However,
2782 there are a couple of unusual error situations where the daemon does write
2783 log entries, and I had neglected to close the log afterwards.
2784
278530. The text of an SMTP error response that was received during a remote
2786 delivery was being truncated at 512 bytes. This is too short for some of
2787 the long messages that one sometimes sees. I've increased the limit to
2788 1024.
2789
279031. It is now possible to make retry rules that apply only when a message has a
2791 specific sender, in particular, an empty sender.
2792
279332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2794 it possible to be selective about when SMTP synchronization is enforced.
2795
279633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2797
279832. Implemented hosts_connection_nolog.
2799
280033. Added an ACL for QUIT.
2801
280234. Setting "delay_warning=" to disable warnings was not working; it gave a
2803 syntax error.
2804
280535. Added mailbox_size and mailbox_filecount to appendfile.
2806
280736. Added control = no_multiline_responses to ACLs.
2808
280937. There was a bug in the logic of the code that waits for the clock to tick
2810 in the case where the clock went backwards by a substantial amount such
2811 that the microsecond fraction of "now" was more than the microsecond
2812 fraction of "then" (but the whole seconds number was less).
2813
281438. Added support for the libradius Radius client library this is found on
2815 FreeBSD (previously only the radiusclient library was supported).
2816
2817
2818Exim version 4.42
2819-----------------
2820
2821 1. When certain lookups returned multiple values in the form name=value, the
2822 quoting of the values was not always being done properly. Specifically:
2823 (a) If the value started with a double quote, but contained no whitespace,
2824 it was not quoted.
2825 (b) If the value contained whitespace other than a space character (i.e.
2826 tabs or newlines or carriage returns) it was not quoted.
2827 This fix has been applied to the mysql and pgsql lookups by writing a
2828 separate quoting function and calling it from the lookup code. The fix
2829 should probably also be applied to nisplus, ibase and oracle lookups, but
2830 since I cannot test any of those, I have not disturbed their existing code.
2831
2832 2. A hit in the callout cache for a specific address caused a log line with no
2833 reason for rejecting RCPT. Now it says "Previous (cached) callout
2834 verification failure".
2835
2836 3. There was an off-by-one bug in the queryprogram router. An over-long
2837 return line was truncated at 256 instead of 255 characters, thereby
2838 overflowing its buffer with the terminating zero. As well as fixing this, I
2839 have increased the buffer size to 1024 (and made a note to document this).
2840
2841 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2842 when Exim is waiting for an SMTP response from a remote server, Exim
2843 restarts its select() call on the socket, thereby resetting its timeout.
2844 This is not a problem when such interrupts are rare. Somebody set up a cron
2845 job to run exiwhat every 2 minutes, which is less than the normal select()
2846 timeout (5 or 10 minutes). This meant that the select() timeout never
2847 kicked in because it was always reset. I have fixed this by comparing the
2848 time when an interrupt arrives with the time at the start of the first call
2849 to select(). If more time than the timeout has elapsed, the interrupt is
2850 treated as a timeout.
2851
2852 5. Some internal re-factoring in preparation for the addition of Sieve
2853 extensions (by MH). In particular, the "personal" test is moved to a
2854 separate function, and given an option for scanning Cc: and Bcc: (which is
2855 not set for Exim filters).
2856
2857 6. When Exim created an email address using the login of the caller as the
2858 local part (e.g. when creating a From: or Sender: header line), it was not
2859 quoting the local part when it contained special characters such as @.
2860
2861 7. Installed new OpenBSD configuration files.
2862
2863 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2864 try to make them clearer.
2865
2866 9. Callout options, other than the timeout value, were being ignored when
2867 verifying sender addresses in header lines. For example, when using
2868
2869 verify = header_sender/callout=no_cache
2870
2871 the cache was (incorrectly) being used.
2872
287310. Added a missing instance of ${EXE} to the exim_install script; this affects
2874 only the Cygwin environment.
2875
287611. When return_path_on_delivery was set as a log selector, if different remote
2877 addresses in the same message used different return paths and parallel
2878 remote delivery occurred, the wrong values would sometimes be logged.
2879 (Whenever a remote delivery process finished, the return path value from
2880 the most recently started remote delivery process was logged.)
2881
288212. RFC 3848 specifies standard names for the "with" phrase in Received: header
2883 lines when AUTH and/or TLS are in use. This is the "received protocol"
2884 field. Exim used to use "asmtp" for authenticated SMTP, without any
2885 indication (in the protocol name) for TLS use. Now it follows the RFC and
2886 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2887 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2888 names appear in log lines as well as in Received: header lines.
2889
289013. Installed MH's patches for Sieve to add the "copy" and "vacation"
2891 extensions, and comparison tests, and to fix some bugs.
2892
289314. Changes to the "personal" filter test:
2894
2895 (1) The test was buggy in that it was just doing the equivalent of
2896 "contains" tests on header lines. For example, if a user's address was
2897 anne@some.where, the "personal" test would incorrectly be true for
2898
2899 To: susanne@some.where
2900
2901 This test is now done by extracting each address from the header in turn,
2902 and checking the entire address. Other tests that are part of "personal"
2903 are now done using regular expressions (for example, to check local parts
2904 of addresses in From: header lines).
2905
2906 (2) The list of non-personal local parts in From: addresses has been
2907 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2908 taken from the Sieve specification recommendations.
2909
2910 (3) If the message contains any header line starting with "List-" it is
2911 treated as non-personal.
2912
2913 (4) The test for "circular" in the Subject: header line has been removed
2914 because it now seems ill-conceived.
2915
291615. Minor typos in src/EDITME comments corrected.
2917
291816. Installed latest exipick from John Jetmore.
2919
292017. If headers_add on a router specified a text string that was too long for
2921 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2922 of string_sprintf() is now avoided.
2923
292418. $message_body_size was not set (it was always zero) when running the DATA
2925 ACL and the local_scan() function.
2926
292719. For the "mail" command in an Exim filter, no default was being set for
2928 the once_repeat time, causing a random time value to be used if "once" was
2929 specified. (If the value happened to be <= 0, no repeat happened.) The
2930 default is now 0s, meaning "never repeat". The "vacation" command was OK
2931 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2932 (I found it when inspecting the code).
2933
293420. There is now an overall timeout for performing a callout verification. It
2935 defaults to 4 times the callout timeout, which applies to individual SMTP
2936 commands during the callout. The overall timeout applies when there is more
2937 than one host that can be tried. The timeout is checked before trying the
2938 next host. This prevents very long delays if there are a large number of
2939 hosts and all are timing out (e.g. when the network connections are timing
2940 out). The value of the overall timeout can be changed by specifying an
2941 additional sub-option for "callout", called "maxwait". For example:
2942
2943 verify = sender/callout=5s,maxwait=20s
2944
294521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2946 to the end before writing, but this should make it even safer).
2947
294822. Exim was forgetting that it had advertised PIPELINING for the second and
2949 subsequent messages on an SMTP connection. It was also not resetting its
2950 memory on STARTTLS and an internal HELO.
2951
295223. When Exim logs an SMTP synchronization error within a session, it now
2953 records whether PIPELINING has been advertised or not.
2954
295524. Added 3 instances of "(long int)" casts to time_t variables that were being
2956 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2957 rather than long int.
2958
295925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2960
296126. Added the never_mail option to autoreply.
2962
2963
2964Exim version 4.41
2965-----------------
2966
2967 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2968 crash if the getsockname() call failed; this can happen if a connection is
2969 closed very soon after it is established. The problem was simply in the
2970 order in which certain operations were done, causing Exim to try to write
2971 to the SMTP stream before it had set up the file descriptor. The bug has
2972 been fixed by making things happen in the correct order.
2973
2974
2975Exim version 4.40
2976-----------------
2977
2978 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2979 before the connection was closed, thus losing the rejection response.
2980
2981 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2982 some early Solaris releases, but causes trouble in current releases where
2983 socklen_t is defined.
2984
2985 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2986 always exist.
2987
2988 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2989 configured.
2990
2991 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2992 that releasing the top of it at the end releases what was used for sub-
2993 expansions (unless the block got too big). However, discard this block if
2994 the first thing is a variable or header, so that we can use its block when
2995 it is dynamic (useful for very large $message_headers, for example).
2996
2997 6. Lookups now cache *every* query, not just the most recent. A new, separate
2998 store pool is used for this. It can be recovered when all lookup caches are
2999 flushed. Lookups now release memory at the end of their result strings.
3000 This has involved some general refactoring of the lookup sources.
3001
3002 7. Some code has been added to the store_xxx() functions to reduce the amount
3003 of flapping under certain conditions.
3004
3005 8. log_incoming_interface used to affect only the <= reception log lines. Now
3006 it causes the local interface and port to be added to several more SMTP log
3007 lines, for example "SMTP connection from", and rejection lines.
3008
3009 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3010
301110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3012
301311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3014 could be overwritten at the end of the current message (or the start of a
3015 new message if it was set in a HELO ACL). The value is now preserved for
3016 the duration of the SMTP connection.
3017
301812. If a transport had a headers_rewrite setting, and a matching header line
3019 contained an unqualified address, that address was qualified, even if it
3020 did not match any rewriting rules. The underlying bug was that the values
3021 of the flags that permit the existence of unqualified sender and recipient
3022 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3023 non-local messages, and by -bnq for local messages) were not being
3024 preserved with the message after it was received.
3025
302613. When Exim was logging an SMTP synchronization error, it could sometimes log
3027 "next input=" as part of the text comprising the host identity instead of
3028 the correct text. The code was using the same buffer for two different
3029 strings. However, depending on which order the printing function evaluated
3030 its arguments, the bug did not always show up. Under Linux, for example, my
3031 test suite worked just fine.
3032
303314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3034 doesn't work with some older versions of Perl. It has been changed to "my",
3035 which in any case is probably the better facility to use.
3036
303715. A really picky compiler found some instances of statements for creating
3038 error messages that either had too many or two few arguments for the format
3039 string.
3040
304116. The size of the buffer for calls to the DNS resolver has been increased
3042 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3043 for addresses that have a lot of PTR records. This alleviates a problem; it
3044 does not fully solve it.
3045
304617. A dnsdb lookup for PTR records that receives more data than will fit in the
3047 buffer now truncates the list and logs the incident, which is the same
3048 action as happens when Exim is looking up a host name and its aliases.
3049 Previously in this situation something unpredictable would happen;
3050 sometimes it was "internal error: store_reset failed".
3051
305218. If a server dropped the connection unexpectedly when an Exim client was
3053 using GnuTLS and trying to read a response, the client delivery process
3054 crashed while trying to generate an error log message.
3055
305619. If a "warn" verb in an ACL added multiple headers to a message in a single
3057 string, for example:
3058
3059 warn message = H1: something\nH2: something
3060
3061 the text was added as a single header line from Exim's point of view
3062 though it ended up OK in the delivered message. However, searching for the
3063 second and subsequent header lines using $h_h2: did not work. This has been
3064 fixed. Similarly, if a system filter added multiple headers in this way,
3065 the routers could not see them.
3066
306720. Expanded the error message when iplsearch is called with an invalid key to
3068 suggest using net-iplsearch in a host list.
3069
307021. When running tests using -bh, any delays imposed by "delay" modifiers in
3071 ACLs are no longer actually imposed (and a message to that effect is
3072 output).
3073
307422. If a "gecos" field in a passwd entry contained escaped characters, in
3075 particular, if it contained a \" sequence, Exim got it wrong when building
3076 a From: or a Sender: header from that name. A second bug also caused
3077 incorrect handling when an unquoted " was present following a character
3078 that needed quoting.
3079
308023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3081 was not being matched caselessly.
3082
308324. Arranged for all hyphens in the exim.8 source to be escaped with
3084 backslashes.
3085
308625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3087 properly. Recipient callout cache records were still being keyed to include
3088 the sender, even when use_sender was set false. This led to far more
3089 callouts that were necessary. The sender is no longer included in the key
3090 when use_sender is false.
3091
309226. Added "control = submission" modifier to ACLs.
3093
309427. Added the ${base62d: operator to decode base 62 numbers.
3095
309628. dnsdb lookups can now access SRV records.
3097
309829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3099 the configuration file.
3100
310130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3102 (-v) mode. This makes the output for a verbose queue run more intelligible.
3103
310431. Added a use_postmaster feature to recipient callouts.
3105
310632. Added the $body_zerocount variable, containing the number of binary zero
3107 bytes in the message body.
3108
310933. The time of last modification of the "new" subdirectory is now used as the
3110 "mailbox time last read" when there is a quota error for a maildir
3111 delivery.
3112
311334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3114
311535. Added +ignore_unknown as a special item in host lists.
3116
311736. Code for decoding IPv6 addresses in host lists is now included, even if
3118 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3119 address was recognized as an IP address, but was then not correctly decoded
3120 into binary, causing unexpected and incorrect effects when compared with
3121 another IP address.
3122
3123
3124Exim version 4.34
3125-----------------
3126
3127 1. Very minor rewording of debugging text in manualroute to say "list of
3128 hosts" instead of "hostlist".
3129
3130 2. If verify=header_syntax was set, and a header line with an unqualified
3131 address (no domain) and a large number of spaces between the end of the
3132 name and the colon was received, the reception process suffered a buffer
3133 overflow, and (when I tested it) crashed. This was caused by some obsolete
3134 code that should have been removed. The fix is to remove it!
3135
3136 3. When running in the test harness, delay a bit after writing a bounce
3137 message to get a bit more predictability in the log output.
3138
3139 4. Added a call to search_tidyup() just before forking a reception process. In
3140 theory, someone could use a lookup in the expansion of smtp_accept_max_
3141 per_host which, without the tidyup, could leave open a database connection.
3142
3143 5. Added the variables $recipient_data and $sender_data which get set from a
3144 lookup success in an ACL "recipients" or "senders" condition, or a router
3145 "senders" option, similar to $domain_data and $local_part_data.
3146
3147 6. Moved the writing of debug_print from before to after the "senders" test
3148 for routers.
3149
3150 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3151 problems for message scanning, either using a data ACL, or using
3152 local_scan() because the Received: header was not generated till after they
3153 were called (in order to set the time as the time of reception completion).
3154 I have revised the way this works. The header is now generated after the
3155 body is received, but before the ACL or local_scan() are called. After they
3156 are run, the timestamp in the header is updated.
3157
3158
3159Exim version 4.33
3160-----------------
3161
3162 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3163 before starting a queue runner without re-exec. This happened only when
3164 deliver_drop_privilege was set or when the Exim user was set to root. The
3165 effect of the bug was that timeouts during subsequent deliveries caused
3166 crashes instead of being properly handled. The handler is now left at its
3167 default (and expected) setting.
3168
3169 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3170 message, again when deliver_drop_privilege is set or Exim is run as root.
3171 The bug described in (1) was not present in this case, but the tidying up
3172 of the other signals was missing. I have made the two cases consistent.
3173
3174 3. The ignore_target_hosts setting on a manualroute router was being ignored
3175 for hosts that were looked up using the /MX notation.
3176
3177 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3178 in domain lists.
3179
3180 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3181 operated on the sender address. After changing the $sender_address to <>
3182 for the sender address verify, Exim was re-instated it as the original
3183 (before rewriting) address, but remembering that it had rewritten it, so it
3184 wasn't rewriting it again. This bug also had the effect of breaking the
3185 sender address verification caching when the sender address was rewritten.
3186
3187 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3188 This has been changed so that if the ip literal address matches
3189 ignore_target_hosts, the router declines.
3190
3191 7. Added expansion conditions match_domain, match_address, and match_local_
3192 part (NOT match_host).
3193
3194 8. The placeholder for the Received: header didn't have a length field set.
3195
3196 9. Added code to Exim itself and to exim_lock to test for a specific race
3197 condition that could lead to file corruption when using MBX delivery. The
3198 issue is with the lockfile that is created in /tmp. If this file is removed
3199 after a process has opened it but before that process has acquired a lock,
3200 there is the potential for a second process to recreate the file and also
3201 acquire a lock. This could lead to two Exim processes writing to the file
3202 at the same time. The added code performs the same test as UW imapd; it
3203 checks after acquiring the lock that its file descriptor still refers to
3204 the same named file.
3205
320610. The buffer for building added header lines was of fixed size, 8192 bytes.
3207 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3208 when Exim is built.
3209
321011. Added the smtp_active_hostname option. If used, this will typically be made
3211 to depend on the incoming interface address. Because $interface_address is
3212 not set up until the daemon has forked a reception process, error responses
3213 that can happen earlier (such as "too many connections") no longer contain
3214 a host name.
3215
321612. If an expansion in a condition on a "warn" statement fails because a lookup
3217 defers, the "warn" statement is abandoned, and the next ACL statement is
3218 processed. Previously this caused the whole ACL to be aborted.
3219
322013. Added the iplsearch lookup type.
3221
322214. Added ident_timeout as a log selector.
3223
322415. Added tls_certificate_verified as a log selector.
3225
322616. Added a global option tls_require_ciphers (compare the smtp transport
3227 option of the same name). This controls incoming TLS connections.
3228
322917. I finally figured out how to make tls_require_ciphers do a similar thing
3230 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3231 before starting the TLS session.
3232
323318. Tabs are now shown as \t in -bP output.
3234
323519. If the log selector return_path_on_delivery was set, Exim crashed when
3236 bouncing a message because it had too many Received: header lines.
3237
323820. If two routers both had headers_remove settings, and the first one included
3239 a superfluous trailing colon, the final name in the first list and the
3240 first name in the second list were incorrectly joined into one item (with a
3241 colon in the middle).
3242
3243
3244Exim version 4.32
3245-----------------
3246
3247 1. Added -C and -D options to the exinext utility, mainly to make it easier
3248 to include in the automated testing, but these could be helpful when
3249 multiple configurations are in use.
3250
3251 2. The exinext utility was not formatting the output nicely when there was
3252 an alternate port involved in the retry record key, nor when there was a
3253 message id as well (for retries that were specific to a specific message
3254 and a specific host). It was also confused by IPv6 addresses, because of
3255 the additional colons they contain. I have fixed the IPv4 problem, and
3256 patched it up to do a reasonable job for IPv6.
3257
3258 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3259 delivery, the log line now contains "pipelined" if PIPELINING was used.
3260
3261 4. An SMTP transport process used to panic and die if the bind() call to set
3262 an explicit outgoing interface failed. This has been changed; it is now
3263 treated in the same way as a connect() failure.
3264
3265 5. A reference to $sender_host_name in the part of a conditional expansion
3266 that was being skipped was still causing a DNS lookup. This no longer
3267 occurs.
3268
3269 6. The def: expansion condition was not recognizing references to header lines
3270 that used bh_ and bheader_.
3271
3272 7. Added the _cache feature to named lists.
3273
3274 8. The code for checking quota_filecount in the appendfile transport was
3275 allowing one more file than it should have been.
3276
3277 9. For compatibility with Sendmail, the command line option
3278
3279 -prval:sval
3280
3281 is equivalent to
3282
3283 -oMr rval -oMs sval
3284
3285 and sets the incoming protocol and host name (for trusted callers). The
3286 host name and its colon can be omitted when only the protocol is to be set.
3287 Note the Exim already has two private options, -pd and -ps, that refer to
3288 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3289 "s", but I don't think that's a major issue.
3290
329110. A number of refactoring changes to the code, none of which should affect
3292 Exim's behaviour:
3293
3294 (a) The number of logging options was getting close to filling up the
3295 32-bit word that was used as a bit map. I have split them into two classes:
3296 those that are passed in the argument to log_write(), and those that are
3297 only ever tested independently outside of that function. These are now in
3298 separate 32-bit words, so there is plenty of room for expansion again.
3299 There is no change in the user interface or the logging behaviour.
3300
3301 (b) When building, for example, log lines, the code previously used a
3302 macro that called string_cat() twice, in order to add two strings. This is
3303 not really sufficiently general. Furthermore, there was one instance where
3304 it was actually wrong because one of the argument was used twice, and in
3305 one call a function was used. (As it happened, calling the function twice
3306 did not affect the overall behaviour.) The macro has been replaced by a
3307 function that can join an arbitrary number of extra strings onto a growing
3308 string.
3309
3310 (c) The code for expansion conditions now uses a table and a binary chop
3311 instead of a serial search (which was left over from when there were very
3312 few conditions). Also, it now recognizes conditions like "pam" even when
3313 the relevant support is not compiled in: a suitably worded error message is
3314 given if an attempt is made to use such a condition.
3315
331611. Added ${time_interval:xxxxx}.
3317
331812. A bug was causing one of the ddress fields not to be passed back correctly
3319 from remote delivery subprocesses. The field in question was not being
3320 subsequently used, so this caused to problems in practice.
3321
332213. Added new log selectors queue_time and deliver_time.
3323
332414. Might have fixed a bug in maildirsizefile handling that threw up
3325 "unexpected character" debug warnings, and recalculated the data
3326 unnecessarily. In any case, I expanded the warning message to give more
3327 information.
3328
332915. Added the message "Restricted characters in address" to the statements in
3330 the default ACL that block characters like @ and % in local parts.
3331
333216. Change 71 for release 4.31 proved to be much less benign that I imagined.
3333 Three changes have been made:
3334
3335 (a) There was a serious bug; a negative response to MAIL caused the whole
3336 recipient domain to be cached as invalid, thereby blocking all messages
3337 to all local parts at the same domain, from all senders. This bug has
3338 been fixed. The domain is no longer cached after a negative response to
3339 MAIL if the sender used is not empty.
3340
3341 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3342 been restored.
3343
3344 (c) A new callout option, "use_sender" has been added for people who want
3345 the modified behaviour.
3346
3347
3348Exim version 4.31
3349-----------------
3350
3351 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3352 Larry Rosenman.
3353
3354 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3355 indeed breaks things for older releases.
3356
3357 3. Added additional logging to the case where there is a problem reading data
3358 from a filter that is running in a subprocess using a pipe, in order to
3359 try to track down a specific problem.
3360
3361 4. Testing facility fudge: when running in the test harness and attempting
3362 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3363 getting "No route to host". Convert this to a timeout.
3364
3365 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3366 warning.
3367
3368 6. Some OS don't have socklen_t but use size_t instead. This affects the
3369 fifth argument of getsockopt() amongst other things. This is now
3370 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3371 can be set for individual OS. I have set it for SunOS5, OSF1, and
3372 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3373 some earlier ones do not.
3374
3375 7. Change 4.30/15 was not doing the test caselessly.
3376
3377 8. The standard form for an IPv6 address literal was being rejected by address
3378 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3379 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3380 this, as well as the form without the "IPv6" on the front (but only when
3381 address literals are enabled, of course).
3382
3383 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3384
338510. Exim crashed if a message with an empty sender address specified by -f
3386 encountered a router with an errors_to setting. This could be provoked only
3387 by a command such as
3388
3389 exim -f "" ...
3390
3391 where an empty string was supplied; "<>" did not hit this bug.
3392
339311. Installed PCRE release 4.5.
3394
339512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3396 remained set. It is now erased.
3397
339813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3399 times from message ids (which are base 36 rather than the normal 62).
3400
340114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3402 were being counted as actual protocol errors, and logged if the log
3403 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3404 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3405 and DATA following a set of rejected RCPTs do not count as protocol errors.
3406 In other words, Exim assumes they were pipelined, though this may not
3407 actually be the case. Of course, in all cases the client gets an
3408 appropriate error code.
3409
341015. If a lookup fails in an ACL condition, a message about the failure may
3411 be available; it is used if testing the ACL cannot continue, because most
3412 such messages specify what the cause of the deferral is. However, some
3413 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3414 that caused an old message to be retained and used if a later statement
3415 caused a defer, replacing the real cause of the deferral.
3416
341716. If an IP address had so many PTR records that the DNS lookup buffer
3418 was not large enough to hold them, Exim could crash while trying to process
3419 the truncated data. It now detects and logs this case.
3420
342117. Further to 4.21/58, another change has been made: if (and only if) the
3422 first line of a message (the first header line) ends with CRLF, a bare LF
3423 in a subsequent header line has a space inserted after it, so as not to
3424 terminate the header.
3425
342618. Refactoring: tidied an ugly bit of code in appendfile that copied data
3427 unnecessarily, used atoi() instead of strtol(), and didn't check the
3428 termination when getting file sizes from file names by regex.
3429
343019. Completely re-implemented the support for maildirsize files, in the light
3431 of a number of problems with the previous contributed implementation
3432 (4.30/29). In particular:
3433
3434 . If the quota is zero, the maildirsize file is maintained, but no quota is
3435 imposed.
3436
3437 . If the maildir directory does not exist, it is created before any attempt
3438 to write a maildirsize file.
3439
3440 . The quota value in the file is just a cache; if the quota is changed in
3441 the transport, the new value overrides.
3442
3443 . A regular expression is available for excluding directories from the
3444 count.
3445
344620. The autoreply transport checks the characters in options that define the
3447 message's headers; it allows continued headers, but it was checking with
3448 isspace() after an embedded newline instead of explicitly looking for a
3449 space or a tab.
3450
345121. If all the "regular" hosts to which an address was routed had passed their
3452 expiry times, and had not reached their retry times, the address was
3453 bounced, even if fallback hosts were defined. Now Exim should go on to try
3454 the fallback hosts.
3455
345622. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3457 equivalent code in the SMTP transport. Some hosts send humungous responses
3458 to HELO/EHLO, more than 1024 it seems.
3459
346023. Refactoring: code in filter.c used (void *) for "any old type" but this
3461 gives compiler warnings in some environments. I've now done it "properly",
3462 using a union.
3463
346424. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3465 (because of problems with the built-in one) was declared to return uschar *
3466 instead of char *, causing compiler failure.
3467
346825. Fixed a file descriptor leak when processing alias/forward files.
3469
347026. Fixed a minor format string issue in dbfn.c.
3471
347227. Typo in exim.c: ("dmbnz" for "dbmnz").
3473
347428. If a filter file refered to $h_xxx or $message_headers, and the headers
3475 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3476 become corrupted.
3477
347829. When a sender address is verified, it is cached, to save repeating the test
3479 when there is more than one recipient in a message. However, when the
3480 verification involves a callout, it is possible for different callout
3481 options to be set for different recipients. It is too complicated to keep
3482 track of this in the cache, so now Exim always runs a verification when a
3483 callout is required, relying on the callout cache for the optimization.
3484 The overhead is duplication of the address routing, but this should not be
3485 too great.
3486
348730. Fixed a bug in callout caching. If a RCPT command caused the sender address
3488 to be verified with callout=postmaster, and the main callout worked but the
3489 postmaster check failed, the verification correctly failed. However, if a
3490 subsequent RCPT command asked for sender verification *without* the
3491 postmaster check, incorrect caching caused this verification also to fail,
3492 incorrectly.
3493
349431. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3495 it was not caching the DNS options (qualify_single, search_parents) that
3496 were used when the lookup failed. A subsequent lookup with different
3497 options therefore always gave the same answer, though there were cases
3498 where it should not have. (Example: a "domains = !$mx_any" option on a
3499 dnslookup router: the "domains" option is always processed without any
3500 widening, but the router might have qualify_single set.) Now Exim uses the
3501 cached value only when the same options are set.
3502
350332. Added John Jetmore's "exipick" utility to the distribution.
3504
350533. GnuTLS: When an attempt to start a TLS session fails for any reason other
3506 than a timeout (e.g. a certificate is required, and is not provided), an
3507 Exim server now closes the connection immediately. Previously it waited for
3508 the client to close - but if the client is SSL, it seems that they each
3509 wait for each other, leading to a delay before one of them times out.
3510
351134: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3512 maintained 0.8.x compatibility because I don't think many are using it, and
3513 it is clearly obsolete.
3514
351535. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3516 transport.
3517
351836. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3519 client certificate was expired. A simple patch fixes this, though I don't
3520 understand the full logic of why the verify callback is called multiple
3521 times.
3522
352337. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3524 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3525 which causes problems with some clients (such as the Certicom SSL Plus
3526 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3527 disables the coutermeasure allowing Eudora to connect."
3528
352938. Exim was not checking that a write() to a log file succeeded. This could
3530 lead to Bad Things if a log got too big, in particular if it hit a file
3531 size limit. Exim now panics and dies if it cannot write to a log file, just
3532 as it does if it cannot open a log file.
3533
353439. Modified OS/Makefile-Linux so that it now contains
3535
3536 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3537
3538 The two -D definitions ensure that Exim is compiled with large file
3539 support, which makes it possible to handle log files that are bigger than
3540 2^31.
3541
354240. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3543 instance) a domain was checked against a named list that involved a lookup,
3544 causing $domain_data to be set, then another domain was checked against the
3545 same list, then the first domain was re-checked, the value of $domain_data
3546 after the final check could be wrong. In particular, if the second check
3547 failed, it could be set empty. This bug probably also applied to
3548 $localpart_data.
3549
355041. The strip_trailing_dot option was not being applied to the address given
3551 with the -f command-line option.
3552
355342. The code for reading a message's header from the spool was incrementing
3554 $received_count, but never initializing it. This meant that the value was
3555 incorrect (doubled) while delivering a message in the same process in which
3556 it was received. In the most common configuration of Exim, this never
3557 happens - a fresh exec is done - but it can happen when
3558 deliver_drop_privilege is set.
3559
356043. When Exim logs an SMTP synchronization error - client data sent too soon -
3561 it now includes up to 150 characters of the unexpected data in the log
3562 line.
3563
356444. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3565 and building data strings. The size of both of these buffers was 10 000
3566 bytes - far larger than anybody would *ever* want, thought I. Needless to
3567 say, somebody hit the limit. I have increased the maximum line length to
3568 20 000 and the maximum data length of concatenated lines to 100 000. I have
3569 also fixed two bugs, because there was no checking on these buffers. Tsk,
3570 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3571 buffer is too small.
3572
357345. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3574 lsearch lookups. Now it does.
3575
357646. When parsing a route_list item in a manualroute router, a fixed-length