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a43a27c5 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.501 2007/04/12 09:00:51 ph10 Exp $
495ae4b0
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
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6Exim version 4.67
7-----------------
8
22ad45c9
MH
9MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
10 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
11 Jan Srzednicki.
12
b4ed4da0
PH
13PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
14 issue a MAIL command.
15
431b7361
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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
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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
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185PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
186 message are rejected with the same error (e.g. no authentication or bad
187 sender address), and a DATA command is nevertheless sent (as can happen
188 with PIPELINING or a stupid MUA), the error message that was given to the
189 RCPT commands is included in the rejection of the DATA command. This is
190 intended to be helpful for MUAs that show only the final error to their
191 users.
192
84024b72
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193PH/42 Another patch from the Sieve maintainer.
194
8005d38e
SC
195SC/02 Eximstats - Differentiate between permanent and temporary rejects.
196 Eximstats - Fixed some broken HTML links and added missing column headers
197 (Jez Hancock).
198 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
199 columns for Rejects, Temp Rejects, Ham, and Spam rows.
200
3298c6c6
SC
201SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
202
a43a27c5
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203PH/43 Yet another patch from the Sieve maintainer.
204
b4ed4da0 205
5dd1517f
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206Exim version 4.66
207-----------------
208
209PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
210 fixed by 4.65/MH/01 (is this a record?) are fixed:
211
212 (i) An empty string was always treated as zero by the numeric comparison
213 operators. This behaviour has been restored.
214
215 (ii) It is documented that the numeric comparison operators always treat
216 their arguments as decimal numbers. This was broken in that numbers
217 starting with 0 were being interpreted as octal.
218
219 While fixing these problems I realized that there was another issue that
220 hadn't been noticed. Values of message_size_limit (both the global option
221 and the transport option) were treated as octal if they started with 0.
222 The documentation was vague. These values are now always treated as
223 decimal, and I will make that clear in the documentation.
224
225
93cfa765
TK
226Exim version 4.65
227-----------------
228
229TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
230 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
231 versions. (#438)
232
d6066548
MH
233MH/01 Don't check that the operands of numeric comparison operators are
234 integers when their expansion is in "skipping" mode (fixes bug
235 introduced by 4.64-PH/07).
236
4362ff0d
PH
237PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
238 child addresses, Exim now panics and dies. Previously, because the count
239 is held in a short int, deliveries were likely to be lost. As such a
240 large number of recipients for a single message is ridiculous
241 (performance will be very, very poor), I have chosen to impose a limit
242 rather than extend the field.
243
93cfa765 244
944e9e9c
TF
245Exim version 4.64
246-----------------
aa41d2de 247
21d74bd9
TK
248TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
249 leftover -K file (the existence of which was triggered by #402).
250 While we were at it, introduced process PID as part of the -K
251 filename. This should rule out race conditions when creating
252 these files.
253
254TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
255 processing considerably. Previous code took too long for large mails,
256 triggering a timeout which in turn triggers #401.
257
258TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
259 in the DK code in transports.c. sendfile() is not really portable,
260 hence the _LINUX specificness.
944e9e9c
TF
261
262TF/01 In the add_headers option to the mail command in an Exim filter,
263 there was a bug that Exim would claim a syntax error in any
264 header after the first one which had an odd number of characters
265 in the field name.
266
2b1c6e3a
PH
267PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
268 callout verification, Exim cached a "reject" for the entire domain. This
269 is correct for most verifications, but it is not correct for a recipient
270 verification with use_sender or use_postmaster set, because in that case
271 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
272 case of MAIL FROM:<> rejection from other early rejections (e.g.
273 rejection of HELO). When verifying a recipient using a non-null MAIL
274 address, the cache is ignored if it shows MAIL FROM:<> rejection.
275 Whatever the result of the callout, the value of the domain cache is
276 left unchanged (for any other kind of callout, getting as far as trying
277 RCPT means that the domain itself is ok).
278
1f872c80
PH
279PH/02 Tidied a number of unused variable and signed/unsigned warnings that
280 gcc 4.1.1 threw up.
281
282PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
283 manifest itself as EPIPE rather than ECONNECT. When tidying away a
284 session, the daemon ignores ECONNECT errors and logs others; it now
285 ignores EPIPE as well.
286
d203e649
PH
287PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
288 (quoted-printable decoding).
289
cc2ed8f7 290PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 291 later the small subsequent patch to fix an introduced bug.
f951fd57 292
ddfcd446
PH
293PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
294
d45b1de8
PH
295PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
296
297PH/08 An error is now given if message_size_limit is specified negative.
298
38a0a95f 299PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 300 to be given (somewhat) arbitrary names.
38a0a95f 301
a2405d83
JJ
302JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
303 in 4.64-PH/09.
304
305JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
306 miscellaneous code fixes
307
6ea85e9a
PH
308PH/10 Added the log_reject_target ACL modifier to specify where to log
309 rejections.
310
26da7e20
PH
311PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
312 hostname. This is wrong, because it relates to the incoming message (and
313 probably the interface on which it is arriving) and not to the outgoing
314 callout (which could be using a different interface). This has been
315 changed to use the value of the helo_data option from the smtp transport
316 instead - this is what is used when a message is actually being sent. If
317 there is no remote transport (possible with a router that sets up host
318 addresses), $smtp_active_hostname is used.
6ea85e9a 319
14aa5a05 320PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 321 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
322 (a) The code assumed that strncpy() returns a negative number on buffer
323 overflow, which isn't the case. Replaced with Exim's string_format()
324 function.
325 (b) There were several signed/unsigned issues. I just did the minimum
326 hacking in of casts. There is scope for a larger refactoring.
327 (c) The code used strcasecmp() which is not a standard C function.
328 Replaced with Exim's strcmpic() function.
329 (d) The code set only $1; it now sets $auth1 as well.
330 (e) A simple test gave the error "authentication client didn't specify
331 service in request". It would seem that Dovecot has changed its
332 interface. Fortunately there's a specification; I followed it and
333 changed what the client sends and it appears to be working now.
334
ff75a1f7
PH
335PH/13 Added $message_headers_raw to provide the headers without RFC 2047
336 decoding.
337
e6f6568e
PH
338PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
339 address A is aliased to B and C, where B exists and C does not. Without
340 -v the output is "A verified" because verification stops after a
341 successful redirection if more than one address is generated. However,
342 with -v the child addresses are also verified. Exim was outputting "A
343 failed to verify" and then showing the successful verification for C,
344 with its parentage. It now outputs "B failed to verify", showing B's
345 parentage before showing the successful verification of C.
346
d6f6e0dc
PH
347PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
348 look up a TXT record in a specific list after matching in a combined
349 list.
350
322050c2
PH
351PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
352 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
353 they consult the DNS. I had assumed they would set it the way they
354 wanted; and indeed my experiments on Linux seem to show that in some
355 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
356 To be on the safe side, however, I have now made the interface to
357 host_find_byname() similar to host_find_bydns(), with an argument
358 containing the DNS resolver options. The host_find_byname() function now
359 sets these options at its start, just as host_find_bydns() does. The smtp
360 transport options dns_qualify_single and dns_search_parents are passed to
361 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
362 of host_find_byname() use the default settings of RES_DEFNAMES
363 (qualify_single) but not RES_DNSRCH (search_parents).
364
08955dd3
PH
365PH/17 Applied (a modified version of) Nico Erfurth's patch to make
366 spool_read_header() do less string testing, by means of a preliminary
367 switch on the second character of optional "-foo" lines. (This is
368 overdue, caused by the large number of possibilities that now exist.
369 Originally there were few.) While I was there, I also converted the
370 str(n)cmp tests so they don't re-test the leading "-" and the first
371 character, in the hope this might squeeze out yet more improvement.
372
1eccaa59
PH
373PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
374 flag allowing group syntax was set by the header_syntax check but not
375 turned off, possible causing trouble later; (2) The flag was not being
376 set at all for the header_verify test, causing "group"-style headers to
377 be rejected. I have now set it in this case, and also caused header_
378 verify to ignore an empty address taken from a group. While doing this, I
379 came across some other cases where the code for allowing group syntax
380 while scanning a header line wasn't quite right (mostly, not resetting
381 the flag correctly in the right place). These bugs could have caused
382 trouble for malformed header lines. I hope it is now all correct.
383
602e59e5
PH
384PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
385 with the "reply" argument non-NULL. The code, however (which originally
386 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
387 but it didn't always do it. This confused somebody who was copying the
388 code for some other use. I have removed all the tests.
389
411ef850
PH
390PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
391 feature that was used to support insecure browsers during the U.S. crypto
392 embargo. It requires special client support, and Exim is probably the
393 only MTA that supported it -- and would never use it because real RSA is
394 always available. This code has been removed, because it had the bad
395 effect of slowing Exim down by computing (never used) parameters for the
396 RSA_EXPORT functionality.
397
7befa435
PH
398PH/21 On the advice of Timo Sirainen, added a check to the dovecot
399 authenticator to fail if there's a tab character in the incoming data
400 (there should never be unless someone is messing about, as it's supposed
401 to be base64-encoded). Also added, on Timo's advice, the "secured" option
402 if the connection is using TLS or if the remote IP is the same as the
403 local IP, and the "valid-client-cert option" if a client certificate has
404 been verified.
405
48da4259 406PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
407 authenticators. This can be used for authorization after authentication
408 succeeds. (In the case of plaintext, it servers for both authentication
409 and authorization.)
410
48da4259
PH
411PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
412 if any retry times were supplied.
413
d1d5595c
PH
414PH/24 Exim crashed if verify=helo was activated during an incoming -bs
415 connection, where there is no client IP address to check. In this
416 situation, the verify now always succeeds.
417
0ef732d9
PH
418PH/25 Applied John Jetmore's -Mset patch.
419
328895cc
PH
420PH/26 Added -bem to be like -Mset, but loading a message from a file.
421
fd700877
PH
422PH/27 In a string expansion for a processed (not raw) header when multiple
423 headers of the same name were present, leading whitespace was being
424 removed from all of them, but trailing whitespace was being removed only
425 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
426 before concatenation. Completely empty headers in a concatenation (as
427 before) are ignored.
fd700877 428
8dce1a6f
PH
429PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
430 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
431
17af4a17
PH
432PH/29 [Removed. This was a change that I later backed out, and forgot to
433 correct the ChangeLog entry (that I had efficiently created) before
434 committing the later change.]
f6c332bd
PH
435
436PH/30 Exim was sometimes attempting to deliver messages that had suffered
437 address errors (4xx response to RCPT) over the same connection as other
438 messages routed to the same hosts. Such deliveries are always "forced",
439 so retry times are not inspected. This resulted in far too many retries
440 for the affected addresses. The effect occurred only when there were more
441 hosts than the hosts_max_try setting in the smtp transport when it had
442 the 4xx errors. Those hosts that it had tried were not added to the list
443 of hosts for which the message was waiting, so if all were tried, there
444 was no problem. Two fixes have been applied:
445
446 (i) If there are any address or message errors in an SMTP delivery, none
447 of the hosts (tried or untried) are now added to the list of hosts
448 for which the message is waiting, so the message should not be a
449 candidate for sending over the same connection that was used for a
450 successful delivery of some other message. This seems entirely
451 reasonable: after all the message is NOT "waiting for some host".
452 This is so "obvious" that I'm not sure why it wasn't done
453 previously. Hope I haven't missed anything, but it can't do any
454 harm, as the worst effect is to miss an optimization.
455
456 (ii) If, despite (i), such a delivery is accidentally attempted, the
457 routing retry time is respected, so at least it doesn't keep
458 hammering the server.
459
c1114884
PH
460PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
461 in ${readsocket because some servers need this prod.
462
7a0743eb
PH
463PH/32 Added some extra debug output when updating a wait-xxx database.
464
0d85fa3f
PH
465PH/33 The hint "could be header name not terminated by colon", which has been
466 given for certain expansion errors for a long time, was not being given
467 for the ${if def:h_colon_omitted{... case.
468
1bf43b78
PH
469PH/34 The spec says: "With one important exception, whenever a domain list is
470 being scanned, $domain contains the subject domain." There was at least
471 one case where this was not true.
472
520de300
PH
473PH/35 The error "getsockname() failed: connection reset by peer" was being
474 written to the panic log as well as the main log, but it isn't really
475 panic-worthy as it just means the connection died rather early on. I have
476 removed the panic log writing for the ECONNRESET error when getsockname()
477 fails.
478
48c7f9e2
PH
479PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
480 runs only) independently of the message's sender address. This meant
481 that, if the 4xx error was in fact related to the sender, a different
482 message to the same recipient with a different sender could confuse
483 things. In particualar, this can happen when sending to a greylisting
484 server, but other circumstances could also provoke similar problems.
485 I have changed the default so that the retry time for these errors is now
486 based a combination of the sender and recipient addresses. This change
487 can be overridden by setting address_retry_include_sender=false in the
488 smtp transport.
489
99ea1c86
PH
490PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
491 remote server are returned as part of bounce messages. This was not
492 happening for LMTP over a pipe (the lmtp transport), but now it is the
493 same for both kinds of LMTP.
494
a2042e78
PH
495PH/38 Despite being documented as not happening, Exim was rewriting addresses
496 in header lines that were in fact CNAMEs. This is no longer the case.
497
4fbcfc2e
PH
498PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
499 and queue runs started by the daemon processed all messages. This has
500 been fixed so that -R and -S can now usefully be given with -q<time>.
501
aa41d2de
PH
502PH/40 Import PCRE release 6.7 (fixes some bugs).
503
af561417
PH
504PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
505
3cc66b45
PH
506PH/42 Give an error if -q is specified more than once.
507
194cc0e4
PH
508PH/43 Renamed the variables $interface_address and $interface_port as
509 $received_ip_address and $received_port, to make it clear that these
510 values apply to message reception, and not to the outgoing interface when
511 a message is delivered. (The old names remain recognized, of course.)
512
a401ddaa
PH
513PH/44 There was no timeout on the connect() call when using a Unix domain
514 socket in the ${readsocket expansion. There now is.
515
4e88a19f
PH
516PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
517 be meaningful with "accept".
518
d7d7b289
SC
519SC/01 Eximstats V1.43
520 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
521
522SC/02 Eximstats V1.44
523 Use a glob alias rather than an array ref in the generated
524 parser. This improves both readability and performance.
525
526SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
527 Collect SpamAssassin and rejection statistics.
528 Don't display local sender or destination tables unless
529 there is data to show.
530 Added average volumes into the top table text output.
531
532SC/04 Eximstats V1.46
533 Collect data on the number of addresses (recipients)
534 as well as the number of messages.
535
536SC/05 Eximstats V1.47
537 Added 'Message too big' to the list of mail rejection
538 reasons (thanks to Marco Gaiarin).
539
540SC/06 Eximstats V1.48
541 Mainlog lines which have GMT offsets and are too short to
542 have a flag are now skipped.
543
544SC/07 Eximstats V1.49 (Alain Williams)
545 Added the -emptyok flag.
546
547SC/08 Eximstats V1.50
548 Fixes for obtaining the IP address from reject messages.
549
0ea2a468
JJ
550JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
551 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
552 whitesspace changes from 4.64-PH/27
553
554JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
555 match 4.64-PH/13
556
557JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
558 are found, allow negative numbers in numeric criteria)
559
560JJ/06 exipick.20061117.2, added new $message_body_missing variable
561
562JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
563 to match changes made in 4.64-PH/43
564
8a10f5a4
PH
565PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
566
30e18802
PH
567PH/47 Put in an explicit test for a DNS lookup of an address record where the
568 "domain" is actually an IP address, and force a failure. This locks out
569 those revolvers/nameservers that support "A-for-A" lookups, in
570 contravention of the specifications.
571
55728a4f
PH
572PH/48 When a host name was looked up from an IP address, and the subsequent
573 forward lookup of the name timed out, the host name was left in
574 $sender_host_name, contrary to the specification.
d7d7b289 575
d7837193
PH
576PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
577 restricted to single-key lookups, Exim was not diagnosing an error if
578 * or *@ was used with a query-style lookup.
579
87054a31
PH
580PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
581
ea2c01d2
MH
582MH/01 local_scan ABI version incremented to 1.1. It should have been updated
583 long ago, but noone interested enough thought of it. Let's just say that
584 the "1.1" means that there are some new functions that weren't there at
585 some point in the past.
586
e4fa6968
PH
587PH/51 Error processing for expansion failure of helo_data from an smtp
588 transport during callout processing was broken.
589
56f5d9bd
PH
590PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
591 tested/used via the -bh/-bhc/-bs options.
592
922e1c28
PH
593PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
594 bug, fixed in subsequent PCRE releases).
595
21eb6e72
PH
596PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
597 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
598
a0540757
PH
599PH/55 Check for a ridiculously long file name in exim_dbmbuild.
600
944e9e9c 601
478be7b0
SC
602Exim version 4.63
603-----------------
604
605SC/01 Use a glob alias rather than an array ref in eximstats generated
606 parser. This improves both readability and performance.
607
608SC/02 Collect SpamAssassin and rejection statistics in eximstats.
609 Don't display local sender or destination tables in eximstats unless
610 there is data to show.
611 Added average volumes into the eximstats top table text output.
612
613SC/03 Collect data on the number of addresses (recipients) as well
614 as the number of messages in eximstats.
615
2b965a65
TF
616TF/01 Correct an error in the documentation for the redirect router. Exim
617 does (usually) call initgroups() when daemonizing.
478be7b0 618
45b91596
PH
619TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
620 with consistent privilege compared to when running as a daemon.
478be7b0 621
c59f5781
TF
622TF/03 Note in the spec that $authenticated_id is not set for local
623 submissions from trusted users.
624
90fc3069
TF
625TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
626 Thanks to Dean Brooks <dean@iglou.com> for the patch.
627
6083aca0
TF
628TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
629 by adding some example configuration directives to the default
630 configuration file. A little bit of work is required to uncomment the
631 directives and define how usernames and passwords are checked, but
632 there is now a framework to start from.
633
765b530f
PH
634PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
635 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
636 without this. I don't know how relevant this is to other LDAP libraries.
637
4e167a8c
PH
638PH/02 Add the verb name to the "unknown ACL verb" error.
639
4608d683
PH
640PH/03 Magnus Holmgren's patch for filter_prepend_home.
641
b8dc3e4a
PH
642PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
643
5418e93b
PH
644PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
645 directory not expanded when it should be if an expanded home directory
646 was set for the address (which is overridden by the transport).
647
b4a9bda2
PH
648PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
649 libradius.
650
45b91596
PH
651PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
652 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
653 because it is too late at that time, and has no effect.
654
5547e2c5
PH
655PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
656 security issue with \' (bugzilla #107). I could not use the
657 PQescapeStringConn() function, because it needs a PGconn value as one of
658 its arguments.
659
dbcef0ea
PH
660PH/08 When testing addresses using -bt, indicate those final addresses that
661 are duplicates that would not cause an additional delivery. At least one
662 person was confused, thinking that -bt output corresponded to deliveries.
663 (Suppressing duplicates isn't a good idea as you lose the information
664 about possibly different redirections that led to the duplicates.)
665
25257489
PH
666PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
667 systems where poll() doesn't work, in particular OS X.
668
c816d124
PH
669PH/10 Added more information to debugging output for retry time not reached.
670
a9ccd69a
PH
671PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
672 operations in malware.c.
673
75fa1910
PH
674PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
675 signatures.
676
a7d7aa58
PH
677PH/13 If write_rejectlog was set false when logging was sent to syslog with
678 syslog_duplication set false, log lines that would normally be written
679 both the the main log and to the reject log were not written to syslog at
680 all.
681
42119b09
PH
682PH/14 In the default configuration, change the use of "message" in ACL warn
683 statements to "add_header".
684
41609df5
PH
685PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
686 not followed by a command (e.g. "seen endif").
687
a5bd321b
PH
688PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
689 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
690 latter.
691
e85a7ad5 692PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
693 so that it is now:
694
e85a7ad5
PH
695 ${if or { \
696 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
697 { match{$h_precedence:}{(?i)bulk|list|junk} } \
698 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
699 }{no}{yes}}
700
e85a7ad5
PH
701 The Auto-Submitted: and various List- headers are standardised, whereas I
702 don't think Precedence: ever was.
5dff5817 703
d8fe1c03
PH
704PH/18 Refactored debugging code in route_finduser() to show more information,
705 in particular, the error code if getpwnam() issues one.
706
16282d2b
PH
707PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
708 This is apparently needed in addition to the PH/07 change above to avoid
709 any possible encoding problems.
710
35d40a98
PH
711PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
712 but not after initializing Perl.
713
034d99ab
PH
714PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
715 output them only if debugging. By default they are written stderr,
716 apparently, which is not desirable.
717
6ec97b1b
PH
718PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
719 queries.
720
e22ca4ac
JJ
721JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
722 --not options
723
724JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
725
33d73e3b
PH
726PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
727 authenticated or an ident call has been made. Suppress the default
728 values for $authenticated_id and $authenticated_sender (but permit -oMai
729 and -oMas) when testing with -bh.
730
9ecb03f3
PH
731PH/24 Re-jigged the order of the tests in the default configuration so that the
732 tests for valid domains and recipients precede the DNS black list and CSA
733 tests, on the grounds that those ones are more expensive.
734
084efe8d
PH
735PH/25 Exim was not testing for a space following SMTP commands such as EHLO
736 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
737 This bug exists in every version of Exim that I still have, right back to
738 0.12.
739
366fc9f0
PH
740PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
741 However, an attempt to turn on case-sensitivity in a regex key by
742 including (?-i) didn't work because the subject string was already
743 lowercased, and the effects were non-intuitive. It turns out that a
744 one-line patch can be used to allow (?-i) to work as expected.
745
c59f5781 746
c887c79e
TF
747Exim version 4.62
748-----------------
749
750TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
751 other effects) broke the use of negated acl sub-conditions.
752
1cce3af8
PH
753PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
754 patch).
755
afb3eaaf
PH
756PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
757 "Deny" causes Exim to reject the incoming connection with a 554 error.
758 Unfortunately, if there is a major crisis, such as a disk failure,
759 tcp-wrappers gives "deny", whereas what one would like would be some
760 kind of temporary error. A kludge has been added to help with this.
761 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
762 554 error is used if errno is still zero or contains ENOENT (which occurs
763 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
764 451 error is used.
765
e173618b
PH
766PH/03 Add -lutil to the default FreeBSD LIBS setting.
767
dd16e114
PH
768PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
769 errors. Otherwise a message that provokes a temporary error (when other
770 messages do not) can cause a whole host to time out.
771
f7fd3850
PH
772PH/05 Batch deliveries by appendfile and pipe transports did not work when the
773 addresses were routed directly to files or pipes from a redirect router.
774 File deliveries just didn't batch; pipe deliveries might have suffered
775 odd errors.
776
d87df92c
PH
777PH/06 A failure to get a lock for a hints database would erroneously always say
778 "Failed to get write lock", even when it was really a read lock.
779
7e9f683d
PH
780PH/07 The appendfile transport was creating MBX lock files with a fixed mode
781 of 0600. This has been changed to use the value of the lockfile_mode
782 option (which defaults to 0600).
783
bfad5236
PH
784PH/08 Applied small patch from the Sieve maintainer.
785
01c490df
PH
786PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
787 folder from quota calculations, a direct delivery into this folder messed
788 up the contents of the maildirsize file. This was because the regex was
789 used only to exclude .Trash (or whatever) when the size of the mailbox
790 was calculated. There was no check that a delivery was happening into an
791 excluded directory. This bug has been fixed by ignoring all quota
792 processing for deliveries into excluded directories.
793
d6629cdc
PH
794PH/10 Added the maildirfolder_create_regex option to appendfile.
795
1cce3af8 796
214e2000
PH
797Exim version 4.61
798-----------------
799
800PH/01 The code for finding all the local interface addresses on a FreeBSD
801 system running IPv6 was broken. This may well have applied to all BSD
802 systems, as well as to others that have similar system calls. The broken
803 code found IPv4 interfaces correctly, but gave incorrect values for the
804 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
805 that it would not match correctly against @[] and not recognize the IPv6
806 addresses as local.
807
f9daeae0
PH
808PH/02 The ipliteral router was not recognizing addresses of the form user@
809 [ipv6:....] because it didn't know about the "ipv6:" prefix.
810
7e66e54d
PH
811PH/03 Added disable_ipv6.
812
c8ea1597
PH
813PH/04 Changed $reply_address to use the raw form of the headers instead of the
814 decoded form, because it is most often used to construct To: headers
815 lines in autoreplies, and the decoded form may well be syntactically
816 invalid. However, $reply_address has leading white space removed, and all
817 newlines turned into spaces so that the autoreply transport does not
818 grumble.
819
911f6fde
PH
820PH/05 If group was specified without a user on a router, and no group or user
821 was specified on a transport, the group from the router was ignored.
822
47ca6d6c
PH
823PH/06 Increased the number of ACL variables to 20 of each type, and arranged
824 for visible compile-time settings that can be used to change these
825 numbers, for those that want even more. Backwards compatibility with old
826 spool files has been maintained. However, going back to a previous Exim
827 release will lost any variables that are in spool files.
828
ed0e9820
PH
829PH/07 Two small changes when running in the test harness: increase delay when
830 passing a TCP/IP connection to a new process, in case the original
831 process has to generate a bounce, and remove special handling of
832 127.0.0.2 (sic), which is no longer necessary.
833
eff37e47
PH
834PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
835 be the same on different OS.
836
1921d2ea
PH
837PH/09 Moved a debug statement in filter processing to avoid a race problem when
838 testing.
839
b3f69ca8
JJ
840JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
841 whether --show-vars was specified or not
842
843JJ/02 exipick: Added support for new ACL variable spool format introduced
844 in 4.61-PH/06
845
424a1c63
PH
846PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
847 syntactically invalid From: or Reply-to: line, and a filter used this to
848 generate an autoreply, and therefore failed to obtain an address for the
849 autoreply, Exim could try to deliver to a non-existent relative file
850 name, causing unrelated and misleading errors. What now happens is that
851 it logs this as a hard delivery error, but does not attempt to create a
852 bounce message.
853
7a100415
PH
854PH/11 The exinext utility has a -C option for testing purposes, but although
855 the given file was scanned by exinext itself; it wasn't being passed on
856 when Exim was called.
857
19b9dc85
PH
858PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
859 an end-of-file indication when reading a command response.
860
309bd837
PH
861PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
862 compiled. In many other places in Exim, IPv6 addresses are always
863 recognized, so I have changed this. It also means that IPv4 domain
864 literals of the form [IPV4:n.n.n.n] are now always recognized.
865
59e82a2a
PH
866PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
867 used if the router is not running as root, for example, when verifying at
868 ACL time, or when using -bh. The debugging output from this situation was
869 non-existent - all you got was a failure to exec. I have made two
870 changes:
871
872 (a) Failures to set uid/gid, the current directory, or a process leader
873 in a subprocess such as that created by queryprogram now generate
874 suitable debugging ouput when -d is set.
875
876 (b) The queryprogram router detects when it is not running as root,
877 outputs suitable debugging information if -d is set, and then runs
878 the subprocess without attempting to change uid/gid.
879
9edc04ce
PH
880PH/15 Minor change to Makefile for building test_host (undocumented testing
881 feature).
882
1349e1e5
PH
883PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
884 additional section of a DNS packet that returns MX or SRV records.
885 Instead, it always explicitly searches for A/AAAA records. This avoids
886 major problems that occur when a DNS server includes only records of one
887 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
888 fixed another bug: if SRV records were looked up and the corresponding
889 address records were *not* found in the additional section, the port
890 values from the SRV records were lost.
891
ea49d0e1
PH
892PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
893 using the correct key (the original address) when searching the retry
894 rules in order to find which one to use for generating the retry hint.
895
064a94c9
PH
896PH/18 If quota_warn_message contains a From: header, Exim now refrains from
897 adding the default one. Similarly, if it contains a Reply-To: header, the
898 errors_reply_to option, if set, is not used.
899
727071f8
PH
900PH/19 When calculating a retry time, Exim used to measure the "time since
901 failure" by looking at the "first failed" field in the retry record. Now
902 it does not use this if it is later than than the arrival time of the
903 message. Instead it uses the arrival time. This makes for better
904 behaviour in cases where some deliveries succeed, thus re-setting the
905 "first failed" field. An example is a quota failure for a huge message
906 when small messages continue to be delivered. Without this change, the
907 "time since failure" will always be short, possible causing more frequent
908 delivery attempts for the huge message than are intended.
dd16e114 909 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 910
f78eb7c6
PH
911PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
912 $1, $2, $3) because the numerical variables can be reset during some
913 expansion items (e.g. "match"), thereby losing the authentication data.
914
21c28500
PH
915PH/21 Make -bV show the size of off_t variables so that the test suite can
916 decide whether to run tests for quotas > 2G.
917
918PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
919 mailbox_size, and mailbox_filecount in the appendfile transport. If a
920 filecount value is greater than 2G or if a quota value is greater than 2G
921 on a system where the size of off_t is not greater than 4, a panic error
922 is given.
923
1688f43b
PH
924PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
925 never match. The debug and -bh output now contains an explicit error
926 message indicating a malformed IPv4 address or mask.
927
928PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
929 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
930 PH/23 above applies.
931
9675b384
PH
932PH/25 Do not write to syslog when running in the test harness. The only
933 occasion when this arises is a failure to open the main or panic logs
934 (for which there is an explicit test).
935
6a3f1455
PH
936PH/26 Added the /no_tell option to "control=freeze".
937
dac79d3e
PH
938PH/27 If a host name lookup failed very early in a connection, for example, if
939 the IP address matched host_lookup and the reverse lookup yielded a name
940 that did not have a forward lookup, an error message of the form "no IP
941 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
942 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 943
5977a0b3
PH
944PH/28 An enabling patch from MH: add new function child_open_exim2() which
945 allows the sender and the authenticated sender to be set when
946 submitting a message from within Exim. Since child_open_exim() is
947 documented for local_scan(), the new function should be too.
948
c91535f3
PH
949PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
950 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
951 results in an empty string is now treated as unset.
952
0d46a8c8
PH
953PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
954
278c6e6c
PH
955PH/31 Added sender_verify_fail logging option.
956
2cbb4081
PH
957PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
958 needed by RFC 822 but not by RFC 2822 was commented out. I have now
959 tidied the source and removed it altogether.
960
3eef829e
PH
961PH/33 When a queue run was abandoned because the load average was too high, a
962 log line was always written; now it is written only if the queue_run log
963 selector is set. In addition, the log line for abandonment now contains
964 information about the queue run such as the pid. This is always present
965 in "start" and "stop" lines but was omitted from the "abandon" line.
966
1ab95fa6
PH
967PH/34 Omit spaces between a header name and the colon in the error message that
968 is given when verify = headers_syntax fails (if there are lots of them,
969 the message gets confusing).
970
230205fc
PH
971PH/35 Change the default for dns_check_names_pattern to allow slashes within
972 names, as there are now some PTR records that contain slashes. This check
973 is only to protect against broken name servers that fall over on strange
974 characters, so the fact that it applies to all lookups doesn't matter.
975
75e0e026
PH
976PH/36 Now that the new test suite is complete, we can remove some of the
977 special code in Exim that was needed for the old test suite. For example,
978 sorting DNS records because real resolvers return them in an arbitrary
979 order. The new test suite's fake resolver always returns records in the
980 same order.
981
982PH/37 When running in the test harness, use -odi for submitted messages (e.g.
983 bounces) except when queue_only is set, to avoid logging races between
984 the different processes.
985
145396a6
PH
986PH/38 Panic-die if .include specifies a non-absolute path.
987
3cd34f13
PH
988PH/39 A tweak to the "H" retry rule from its user.
989
11121d3d
JJ
990JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
991 a label. They prevented compilation on older perls.
992
993JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
994 a warning to be raised on newish perls.
995
996JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
997 on queue. Changes to match documented behaviour of showing count of
998 messages matching specified criteria.
999
8def5aaf
PH
1000PH/40 Changed the default ident timeout from 30s to 5s.
1001
929ba01c
PH
1002PH/41 Added support for the use of login_cap features, on those BSD systems
1003 that have them, for controlling the resources used by pipe deliveries.
1004
2632889e
PH
1005PH/42 The content-scanning code uses fopen() to create files in which to put
1006 message data. Previously it was not paying any attention to the mode of
1007 the files. Exim runs with umask(0) because the rest of the code creates
1008 files with open(), and sets the required mode explicitly. Thus, these
1009 files were ending up world-writeable. This was not a big issue, because,
1010 being within the spool directory, they were not world-accessible. I have
1011 created a function called modefopen, which takes an additional mode
1012 argument. It sets umask(777), creates the file, chmods it to the required
1013 mode, then resets the umask. All the relevant calls to fopen() in the
1014 content scanning code have been changed to use this function.
1015
944a9c55
PH
1016PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1017 to 24 hours. This avoids potential overflow problems when processing G
1018 and H retry rules. I suspect nobody ever tinkers with this value.
1019
4a23603b
PH
1020PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1021
4730f942
PH
1022PH/45 When the plaintext authenticator is running as a client, the server's
1023 challenges are checked to ensure they are valid base64 strings. By
1024 default, the authentication attempt is cancelled if an invalid string is
1025 received. Setting client_ignore_invalid_base64 true ignores these errors.
1026 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1027 they are received. Thus, the responses can be made to depend on the
1028 challenges. If an invalid string is ignored, an empty string is placed in
1029 the variable.
1030
30dba1e6
PH
1031PH/46 Messages that are created by the autoreply transport now contains a
1032 References: header, in accordance with RFCs 2822 and 3834.
1033
382afc6b
PH
1034PH/47 Added authenticated_sender_force to the smtp transport.
1035
a86229cf
PH
1036PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1037
50c99ba6
PH
1038PH/49 Installed latest patch from the Sieve maintainer.
1039
d35e429d
PH
1040PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1041 was also set, the appendfile transport was unnecessarily scanning a
1042 directory of message files (e.g. for maildir delivery) to find the count
1043 of files (along with the size), even though it did not need this
1044 information. It now does the scan only if it needs to find either the
1045 size of the count of files.
1046
f90d018c
PH
1047PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1048
75def545
PH
1049PH/52 Two bugs concerned with error handling when the smtp transport is
1050 used in LMTP mode:
1051
1052 (i) Exim was not creating retry information for temporary errors given
1053 for individual recipients after the DATA command when the smtp transport
1054 was used in LMTP mode. This meant that they could be retried too
1055 frequently, and not timed out correctly.
1056
1057 (ii) Exim was setting the flag that allows error details to be returned
1058 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1059 recipients that were returned after the DATA command.
1060
1061PH/53 This is related to PH/52, but is more general: for any failing address,
1062 when detailed error information was permitted to be returned to the
1063 sender, but the error was temporary, then after the final timeout, only
1064 "retry timeout exceeded" was returned. Now it returns the full error as
1065 well as "retry timeout exceeded".
1066
c46782ef
PH
1067PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1068 do this, and (what is worse) MTAs that accept it.
1069
71fafd95
PH
1070PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1071 will now be deprecated.
1072
2c5db4fd
PH
1073PH/56 New os.c-cygwin from the Cygwin maintainer.
1074
9cf6b11a
JJ
1075JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1076 formats (previously only available in exim formats via -bpr, -bpru,
1077 and -bpra. Now also available in native and exiqgrep formats)
1078
1079JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1080 with very large, slow to parse queues
1081
1082JJ/08 exipick: added ! as generic prefix to negate any criteria format
1083
1084JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1085
898d150f
PH
1086PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1087 responses to authentication challenges, though it was showing the
1088 challenges; (ii) I've removed the CR characters from the debug output for
1089 SMTP output lines.
1090
46218253
PH
1091PH/58 Allow for the insertion of a newline as well as a space when a string
1092 is turned into more than one encoded-word during RFC 2047 encoding. The
1093 Sieve code now uses this.
1094
e97957bc
PH
1095PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1096 data_4xx, lost_connection, tls_required.
1097
81e509d7
PH
1098PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1099 message was being sent as an SMTP response.
1100
3d240ff7
PH
1101PH/61 Add -l and -k options to exicyclog.
1102
b37c4101
PH
1103PH/62 When verifying, if an address was redirected to one new address, so that
1104 verification continued, and the new address failed or deferred after
1105 having set something in $address_data, the value of $address_data was not
1106 passed back to the ACL. This was different to the case when no
1107 redirection occurred. The value is now passed back in both cases.
1108
79378e0f
PH
1109PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1110 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1111 use login_cap.h, so on its own it isn't the distinguishing feature. The
1112 new name refers directly to the setclassresources() function.
1113
e49c7bb4
PH
1114PH/65 Added configuration files for NetBSD3.
1115
d114ec46
PH
1116PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1117
f3d7df6c
PH
1118PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1119 is preferred over IPv4.
1120
715ab376
PH
1121PH/68 The bounce_return_message and bounce_return_body options were not being
1122 honoured for bounces generated during the reception of non-SMTP messages.
1123 In particular, this applied to messages rejected by the ACL. This bug has
1124 been fixed. However, if bounce_return_message is true and bounce_return_
1125 body is false, the headers that are returned for a non-SMTP message
1126 include only those that have been read before the error was detected.
1127 (In the case of an ACL rejection, they have all been read.)
1128
6b31b150
PH
1129PH/69 The HTML version of the specification is now built in a directory called
1130 spec_html instead of spec.html, because the latter looks like a path with
1131 a MIME-type, and this confuses some software.
1132
1133PH/70 Catch two compiler warnings in sieve.c.
1134
d515a917
PH
1135PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1136 function verify_get_ident() calls ip_connect() to connect a socket, but
1137 if the "connect()" function timed out, ip_connect() used to close the
1138 socket. However, verify_get_ident() also closes the socket later, and in
1139 between Exim writes to the log, which may get opened at this point. When
1140 the socket was closed in ip_connect(), the log could get the same file
1141 descriptor number as the socket. This naturally causes chaos. The fix is
1142 not to close the socket in ip_connect(); the socket should be closed by
1143 the function that creates it. There was only one place in the code where
1144 this was missing, in the iplookup router, which I don't think anybody now
1145 uses, but I've fixed it anyway.
1146
9b8fadde
PH
1147PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1148 well as to direct DNS lookups. Otherwise the handling of names in host
1149 lists is inconsistent and therefore confusing.
1150
214e2000 1151
5de37277
PH
1152Exim version 4.60
1153-----------------
1154
cc38ddbf
PH
1155PH/01 Two changes to the default runtime configuration:
1156
1157 (1) Move the checks for relay_from_hosts and authenticated clients from
1158 after to before the (commented out) DNS black list checks.
1159
1160 (2) Add control=submission to the relay_from_hosts and authenticated
1161 clients checks, on the grounds that messages accepted by these
1162 statements are most likely to be submissions.
5de37277 1163
72fdd6ae
PH
1164PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1165
1166 (1) Generate an error if the third argument for the ${prvs expansion is
1167 not a single digit.
1168
1169 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1170 string.
1171
1172 (3) Reset the variables that are obtained from the first argument of
1173 ${prvscheck and used in the second argument before leaving the code,
1174 because their memory is reclaimed, so using them afterwards may do
1175 silly things.
1176
1177 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1178 one (it's much easier than Tom thought :-).
1179
1180 (5) Because of (4), we can now allow for the use of $prvscheck_result
1181 inside the third argument.
cb9328de 1182
cb741023
PH
1183PH/03 For some reason, the default setting of PATH when running a command from
1184 a pipe transport was just "/usr/bin". I have changed it to
1185 "/bin:/usr/bin".
1186
f174f16e
PH
1187PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1188 anything to be listed in the output from -bV.
b2f5a032 1189
c25242d7
PH
1190PH/05 When a filter generated an autoreply, the entire To: header line was
1191 quoted in the delivery log line, like this:
1192
1193 => >A.N.Other <ano@some.domain> <original@ddress> ...
1194
1195 This has been changed so that it extracts the operative address. There
1196 may be more than one such address. If so, they are comma-separated, like
1197 this:
1198
1199 => >ano@some.domain,ona@other.domain <original@ddress> ...
1200
82c19f95
PH
1201PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1202 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1203 not being looked up in the rDNS to get a host name, Exim was showing the
1204 IP address twice in Received: lines, even though the IP addresses were
1205 identical. For example:
1206
1207 Received: from [1.2.3.4] (helo=[1.2.3.4])
1208
1209 However, if the real host name was known, it was omitting the HELO data
1210 if it matched the actual IP address. This has been tidied up so that it
1211 doesn't show the same IP address twice.
1212
d7ffbc12
PH
1213PH/07 When both +timestamp and +memory debugging was on, the value given by
1214 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1215 called by the debug printing, thereby overwriting the timestamp buffer.
1216 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1217
9f526266
PH
1218PH/08 When the original message was included in an autoreply transport, it
1219 always said "this is a copy of the message, including all the headers",
1220 even if body_only or headers_only was set. It now gives an appropriate
1221 message.
1222
87fcc8b9
PH
1223PH/09 Applied a patch from the Sieve maintainer which:
1224
1225 o fixes some comments
1226 o adds the (disabled) notify extension core
1227 o adds some debug output for the result of if/elsif tests
1228 o points to the current vacation draft in the documentation
1229 and documents the missing references header update
1230
1231 and most important:
1232
1233 o fixes a bug in processing the envelope test (when testing
1234 multiple envelope elements, the last element determinted the
1235 result)
1236
456682f5
PH
1237PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1238 Electronic Mail") by including:
1239
1240 Auto-submitted: auto-generated
1241
1242 in the messages that it generates (bounce messages and others, such as
1243 warnings). In the case of bounce messages for non-SMTP mesages, there was
1244 also a typo: it was using "Auto_submitted" (underscore instead of
1245 hyphen). Since every message generated by Exim is necessarily in response
1246 to another message, thes have all been changed to:
1247
1248 Auto-Submitted: auto-replied
1249
1250 in accordance with these statements in the RFC:
1251
1252 The auto-replied keyword:
1253
1254 - SHOULD be used on messages sent in direct response to another
1255 message by an automatic process,
1256
1257 - MUST NOT be used on manually-generated messages,
1258
1259 - MAY be used on Delivery Status Notifications (DSNs) and Message
1260 Disposition Notifications (MDNs),
1261
1262 - MUST NOT be used on messages generated by automatic or periodic
1263 processes, except for messages which are automatic responses to
1264 other messages.
1265
3e46c1aa
PH
1266PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1267 to the default Received: header definition.
456682f5 1268
49826d12
PH
1269PH/12 Added log selector acl_warn_skipped (default on).
1270
eba0c039
PH
1271PH/13 After a successful wildlsearch lookup, discard the values of numeric
1272 variables because (a) they are in the wrong storage pool and (b) even if
1273 they were copied, it wouldn't work properly because of the caching.
1274
a0d6ba8a
PH
1275PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1276 checking when decoding. Apparently there are clients that generate
1277 overlong encoded strings. Why am I not surprised?
1278
f0917727
PH
1279PH/15 If the first argument of "${if match_address" was not empty, but did not
1280 contain an "@" character, Exim crashed. Now it writes a panic log message
1281 and treats the condition as false.
1282
096fee00
PH
1283PH/16 In autoreply, treat an empty string for "once" the same as unset.
1284
024bd3c2
PH
1285PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1286 extension "envelope-auth". The code is finished and in agreement with
1287 other implementations, but there is no documentation so far and in fact,
1288 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1289 not changing the active code.
1290
1291 Print executed "if" and "elsif" statements when debugging is used. This
1292 helps a great deal to understand what a filter does.
1293
1294 Document more things not specified clearly in RFC3028. I had all this
1295 sorted out, when out of a sudden new issues came to my mind. Oops."
1296
df199fec
PH
1297PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1298 (Bugzilla #53).
1299
d27f1df3
PH
1300PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1301 canonical form (as documented). However, after a host name lookup from
1302 the IP address, check_host() was doing a simple string comparison with
1303 addresses acquired from the DNS when checking that the found name did
1304 have the original IP as one of its addresses. Since any found IPv6
1305 addresses are likely to be in abbreviated form, the comparison could
1306 fail. Luckily, there already exists a function for doing the comparison
1307 by converting both addresses to binary, so now that is used instead of
1308 the text comparison.
1309
96776534
PH
1310PH/20 There was another similar case to PH/19, when a complete host name was
1311 given in a host list; looking up its IP address could give an abbreviated
1312 form, whereas the current host's name might or might not be abbreviated.
1313 The same fix has been applied.
1314
5de37277 1315
9a799bc0
PH
1316Exim version 4.54
1317-----------------
1318
1319PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1320 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1321 It now does.
1322
99a4b039
PH
1323PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1324 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1325
1326PH/03 Typo: missing ".o" in src/pcre/Makefile.
1327
4b233853
PH
1328PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1329 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1330 Also, for "Auto-Submitted", treat anything other than "no" as
1331 non-personal, in accordance with RFC 3834. (Previously it treated
1332 anything starting "auto-" as non-personal.)
1333
8857ccfd
PH
1334TF/01 The control=submission/name=... option had a problem with syntax
1335 errors if the name included a slash character. The /name= option
1336 now slurps the rest of the string, so it can include any characters
1337 but it must come last in the list of options (after /sender_retain
1338 or /domain=).
1339
433a2980
PH
1340PH/05 Some modifications to the interface to the fake nameserver for the new
1341 testing suite.
1342
3e46c1aa 1343
9a799bc0 1344
e3a311ba
TK
1345Exim version 4.53
1346-----------------
1347
1348TK/01 Added the "success_on_redirect" address verification option. See
1349 NewStuff for rationale and an example.
1350
13b685f9
PH
1351PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1352
395ff96d
PH
1353PH/02 Patch to exigrep to allow it to work on syslog lines.
1354
5b68f6e4
PH
1355PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1356 fread() to skip over the body file's header line, because in Cygwin the
1357 header line is locked and is inaccessible.
1358
1ab52c69
PH
1359PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1360 co-exist for some time) to make it clear that it is the Exim ID that is
1361 referenced, not the Message-ID: header line.
1362
b07e6aa3
PH
1363PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1364 string_format() function, because snprintf() does not exist on all
1365 operating systems.
1366
254e032f
PH
1367PH/06 The use of forbid_filter_existstest now also locks out the use of the
1368 ${stat: expansion item.
1369
3af76a81
PH
1370PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1371 protocol synchronization error", to keep the pedants happy.
1372
2548ba04
PH
1373PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1374 well as for IRIX systems, when gcc is being used. See the host.c source
1375 file for comments.
1376
b6c6011d
PH
1377PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1378
cf39cf57
PH
1379PH/10 Named domain lists were not working if used in a queue_smtp_domains
1380 setting.
1381
f1513293
PH
1382PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1383 transport and to the smtp transport in LMTP mode.
1384
727549a4
PH
1385TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1386
af46795e
PH
1387PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1388 run a filter in a subprocess. This could lead to confusion in subsequent
1389 lookups in the parent process. There should also be a search_tidyup() at
1390 the end of the subprocess.
1391
d7b47fd0
PH
1392PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1393 only if the host matched helo_try_verify_hosts, which caused the
1394 verification to occur when the EHLO/HELO command was issued. The ACL just
1395 tested the remembered result. Now, if a previous verification attempt has
1396 not happened, "verify = helo" does it there and then.
1397
ee744174
JJ
1398JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1399
b582ab87
PH
1400TK/03 Fix log output including CR from clamd.
1401
41a13e0a
PH
1402PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1403 exist provoked a memory error which could cause a segfault.
1404
f625cc5a
PH
1405PH/15 Installed PCRE 6.2
1406
1407PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1408
21f7af35
PH
1409PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1410 of the problem. Specifically, suggested +O2 rather than +O1 for the
1411 HP-UX compiler.
1412
31480e42
PH
1413PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1414
2d280592
PH
1415PH/20 If a delivery was routed to a non-standard port by means of an SRV
1416 record, the port was not correctly logged when the outgoing_port log
1417 selector was set (it logged the transort's default port).
1418
7cd1141b
PH
1419PH/21 Added support for host-specific ports to manualroute, queryprogram,
1420 fallback_hosts, and "hosts" in the smtp transport.
1421
1422PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1423 host errors such as "Connection refused".
1424
750af86e
PH
1425PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1426 authentication with radiusclient 0.4.9:
1427
1428 - Error returned from rc_read_config was caught wrongly
1429 - Username/password not passed on to radius server due to wrong length.
1430
1431 The presumption is that some radiusclient API changes for 4.51/PH/17
1432 were not taken care of correctly. The code is still untested by me (my
1433 Linux distribution still has 0.3.2 of radiusclient), but it was
1434 contributed by a Radius user.
1435
1436PH/24 When doing a callout, the value of $domain wasn't set correctly when
1437 expanding the "port" option of the smtp transport.
1438
4304270b
TK
1439TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1440 while reading a MIME header. Thanks to Tom Hughes for a patch.
1441
750af86e
PH
1442PH/24 Include config.h inside local_scan.h so that configuration settings are
1443 available.
1444
64ffc24f
PH
1445PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1446 that in an ACL for RCPT (for example), you can examine exactly what was
1447 received.
1448
5dd9625b
PH
1449PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1450 commands, but it was not correctly comparing the address with the actual
1451 client host address. Thus, it would show the EHLO address in Received:
1452 header lines when this was not necessary.
1453
5591031b
PH
1454PH/27 Added the % operator to ${eval:}.
1455
ba18e66a
PH
1456PH/28 Exim tries to create and chdir to its spool directory when it starts;
1457 it should be ignoring failures (because with -C, for example, it has lost
1458 privilege). It wasn't ignoring creation failures other than "already
1459 exists".
1460
9cec981f
PH
1461PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1462 -bV or -d is used.
1463
aa2b5c79
PH
1464PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1465 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1466 too many continuations, the temporary file was not being removed, and the
1467 return code was incorrect.
aa2b5c79 1468
48a53b7f
PH
1469PH/31 Missing "BOOL" in function definition in filtertest.c.
1470
1c59d63b
PH
1471PH/32 Applied Sieve patches from the maintainer.
1472
671012da
TK
1473TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1474
1509d3a8
PH
1475PH/33 Added "verify = not_blind".
1476
1477PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1478 Local/Makefile (with some defaults set). These are used in built scripts
1479 such as exicyclog, but they have never been used in the exim_install
1480 script (though there are many overriding facilities there). I have
1481 arranged that the exim_install script now takes note of these two
1482 settings.
1483
1484PH/35 Installed configuration files for Dragonfly.
1485
2fe1a124
PH
1486PH/36 When a locally submitted message by a trusted user did not contain a
1487 From: header, and the sender address was obtained from -f or from an SMTP
1488 MAIL command, and the trusted user did not use -F to supply a sender
1489 name, $originator_name was incorrectly used when constructing a From:
1490 header. Furthermore, $originator_name was used for submission mode
1491 messages from external hosts without From: headers in a similar way,
1492 which is clearly wrong.
1493
8800895a
PH
1494PH/37 Added control=suppress_local_fixups.
1495
ccfdb010
PH
1496PH/38 When log_selector = +received_sender was set, and the addition of the
1497 sender made the log line's construction buffer exactly full, or one byte
1498 less than full, an overflow happened when the terminating "\n" was
1499 subsequently added.
1500
1130bfb0
PH
1501PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1502 when the result of a list match is failure because a DNS lookup failed.
1503
ebcb507f
PH
1504PH/40 RM_COMMAND is now used in the building process.
1505
c35e155c
PH
1506PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1507 the "build-* directories that it finds.
1508
95d1f782
PH
1509PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1510 address in a domain literal was a prefix of an interface address.
1511
fd6de02e
PH
1512PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1513 when verifying a sender address, unless rewrite_headers is false.
1514
58de37c5
PH
1515PH/44 Wrote a long comment about why errors_to addresses are verified as
1516 recipients, not senders.
1517
261cf466
TF
1518TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1519 the ratelimit ACL was added.
1520
3ee512ff
PH
1521PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1522
e08c430f
PH
1523PH/46 Added extra information about PostgreSQL errors to the error string.
1524
bef5a11f
PH
1525PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1526 avoiding the need to install special zones in a real server. This is
1527 backwards compatible; if it can't find the fake resolver, it drops back.
1528 Thus, both old and new test suites can be run.
1529
7546de58
TF
1530TF/02 Added util/ratelimit.pl
1531
e5d5a95f
TF
1532TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1533 clock is set back in time.
1534
2e88a017
TF
1535TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1536 Candler <B.Candler@pobox.com>.
1537
a5f65aa4
TF
1538TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1539 OK for addresses that are the result of redirections.
1540
e7726cbf
PH
1541PH/48 A number of further additions for the benefit of the new test suite,
1542 including a fake gethostbyname() that interfaces to the fake DNS resolver
1543 (see PH/47 above).
1544
a7fdad5b
TF
1545TF/06 The fix for widen_domains has also been applied to qualify_single and
1546 search_parents which are the other dnslookup options that can cause
1547 header rewrites.
1548
6af56900
PH
1549PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1550 type ("H").
1551
0925ede6
PH
1552PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1553
66afa403
TF
1554TF/07 Exim produced the error message "an SRV record indicated no SMTP
1555 service" if it encountered an MX record with an empty target hostname.
1556 The message is now "an MX or SRV record indicated no SMTP service".
1557
0154e85a
TF
1558TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1559 if the DNS of the sending site is misconfigured. This is quite a
1560 common situation. This change restores the behaviour of treating a
1561 helo verification defer as a failure.
1562
16f12c76
PH
1563PH/51 If self=fail was set on a router, the bounce message did not include the
1564 actual error message.
1565
bbe902f0 1566
e5a9dba6
PH
1567Exim version 4.52
1568-----------------
1569
1570TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1571
22c3b60b
PH
1572PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1573 command itself ended in error, the underlying message about the transport
1574 filter timeout was being overwritten with the pipe command error. Now the
1575 underlying error message should be appended to the second error message.
1576
06a9b4b5
PH
1577TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1578
c1ac6996
PH
1579PH/02 Reduce the amount of output that "make" produces by default. Full output
1580 can still be requested.
1581
9c7a242c
PH
1582PH/03 The warning log line about a condition test deferring for a "warn" verb
1583 was being output only once per connection, rather than after each
1584 occurrence (because it was using the same function as for successful
1585 "warn" verbs). This seems wrong, so I have changed it.
1586
87ba3f5f
PH
1587TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1588 it should not have, which might have caused a crash in the right
1589 circumstances, but probably never did.
1590
1591PH/04 Installed a modified version of Tony Finch's patch to make submission
1592 mode fix the return path as well as the Sender: header line, and to
1593 add a /name= option so that you can make the user's friendly name appear
1594 in the header line.
1595
29aba418
TF
1596TF/03 Added the control = fakedefer ACL modifier.
1597
fe0dab11
TF
1598TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1599 Mark Lowes for thorough testing.
870f6ba8 1600
11d337a4
TK
1601TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1602
1603TK/03 Merged latest SRS patch from Miles Wilton.
1604
415c8f3b
PH
1605PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1606 with the definition in sysexits.h (which is #included earlier).
1607 Fortunately, Exim does not actually use EX_OK. The code used to try to
1608 preserve the sysexits.h value, by assumimg that macro definitions were
1609 scanned for macro replacements. I have been disabused of this notion,
1610 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1611
958541e9
PH
1612PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1613 in the smtp transport. When a block could not be written in a single
1614 write() function, the timeout was being re-applied to each part-write.
1615 This seems wrong - if the receiver was accepting one byte at a time it
1616 would take for ever. The timeout is now adjusted when this happens. It
1617 doesn't have to be particularly precise.
1618
c206415f
TK
1619TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1620 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1621
2a4be8f9
PH
1622PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1623 without a domain if the check to <postmaster@domain> fails.
1624
1cba11c5
SC
1625SC/01 Eximstats: added -xls and the ability to specify output files
1626 (patch written by Frank Heydlauf).
1627
1628SC/02 Eximstats: use FileHandles for outputing results.
1629
1630SC/03 Eximstats: allow any combination of xls, txt, and html output.
1631
1632SC/04 Eximstats: fixed display of large numbers with -nvr option
1633
1634SC/05 Eximstats: fixed merging of reports with empty tables.
1635
1636SC/06 Eximstats: added the -include_original_destination flag
1637
1638SC/07 Eximstats: removed tabs and trailing whitespace.
1639
1005d00e
TK
1640TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1641
1642TK/06 MBOX spool code: Add real "From " MBOX separator line
1643 so the .eml file is really in mbox format (even though
1644 most programs do not really care). Patch from Alex Miller.
1645
1646TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1647 The latter is generated from $received_to and is only set if the
1648 message has one envelope recipient. SA can use these headers,
1649 obviously out-of-the-box. Patch from Alex Miller.
1650
9b4768fa
PH
1651PH/08 The ${def test on a variable was returning false if the variable's
1652 value was "0", contrary to what the specification has always said!
1653 The result should be true unless the variable is empty.
1654
1655PH/09 The syntax error of a character other than { following "${if
1656 def:variable_name" (after optional whitespace) was not being diagnosed.
1657 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1658 accidental colon was present, for example, could give incorrect results.
1659
0d7eb84a
PH
1660PH/10 Tidied the code in a number of places where the st_size field of a stat()
1661 result is used (not including appendfile, where other changes are about
1662 to be made).
1663
1664PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1665 This involved changing a lot of size variables from int to off_t. It
1666 should work with maildirs and everything.
1667
40727bee
TK
1668TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1669 spamd dying while we are connected to it.
1670
554d2369
TF
1671TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1672 <jgh@wizmail.org>
1673
1f922db1
PH
1674PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1675 function for BDB 4.3.
1676
ef213c3b
PH
1677PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1678
8ac170f3
PH
1679PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1680 the sources for PCRE have been re-arranged and more files are now
1681 involved.
1682
b1c749bb
PH
1683PH/15 The code I had for printing potentially long long variables in PH/11
1684 above was not the best (it lost precision). The length of off_t variables
1685 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1686 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1687 to be "long long int" or "long int". This is needed for the internal
1688 formatting function string_vformat().
b1c749bb 1689
4aac9b49
PH
1690PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1691 the configuration file to be ":syslog", then the script "guesses" where
1692 the logs files are, rather than using the compiled in default. In our
1693 case the guess is not the same as the compiled default, so the script
1694 suddenly stopped working when I started to use syslog. The patch checks
1695 to see if log_file_path is "". If so, it attempts to read it from exim
1696 with no configuration file to get the compiled in version, before it
1697 falls back to the previous guessing code."
1698
294520c8
TK
1699TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1700 implementing BATV in an Exim configuration. See NewStuff for the gory
1701 details.
1702
5bd022fe
PH
1703PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1704 Makefile that are specific to HP-UX.
1705
90e9ce59
PH
1706PH/18 If the "use_postmaster" option was set for a recipient callout together
1707 with the "random" option, the postmaster address was used as the MAIL
1708 FROM address for the random test, but not for the subsequent recipient
1709 test. It is now used for both.
1710
5ea81592
PH
1711PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1712 patch removes a few documentation additions to RFC 3028, because the
1713 latest draft now contains them. It adds the new en;ascii-case comparator
1714 and a new error check for 8bit text in MIME parts. Comparator and
1715 require names are now matched exactly. I enabled the subaddress
1716 extension, but it is not well tested yet (read: it works for me)."
1717
c6c2dc1d
PH
1718PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1719 rework some of the code of TK/09 above to avoid the hardwired use of
1720 "%lld" and "long long". Replaced the call to snprintf() with a call to
1721 string_vformat().
1722
fffffe4c
PH
1723PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1724 records point to non-existent hosts", "retry timeout exceeded", and
1725 "retry time not reached for any host after a long failure period".
ca02eafb 1726
9a26b6b2
PH
1727PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1728 experimental DomainKeys support:
1729
1730 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1731 (2) On an error such as an illegally used "control", the wrong name for
1732 the control was given.
1733
1734 These problems did NOT occur unless DomainKeys support was compiled.
1735
4aee0225
PH
1736PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1737
32d668a5
PH
1738PH/24 Added ${if match_ip condition.
1739
8187c3f3
PH
1740PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1741 databases so that it will be absolutely obvious if a crash occurs in the
1742 DB library. This is a regular occurrence (often caused by mis-matched
1743 db.h files).
1744
ff790e47 1745PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1746 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1747 picked up on a user's system that detects such things. There doesn't seem
1748 to be a gcc warning option for this - only an attribute that has to be
1749 put on the function's prototype. It seems that in Fedora Core 4 they have
1750 set this on a number of new functions. No doubt there will be more in due
1751 course.
ff790e47 1752
5417f6d1
PH
1753PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1754 specify a transport. However, if an address that was verified by such a
1755 router was the subject of a callout, Exim crashed because it tried to
1756 read the rcpt_include_affixes from the non-existent transport. Now it
1757 just assumes that the setting of that option is false. This bug was
1758 introduced by 4.51/PH/31.
1759
59cf8544
PH
1760PH/28 Changed -d+all to exclude +memory, because that information is very
1761 rarely of interest, but it makes the output a lot bigger. People tend to
1762 do -d+all out of habit.
1763
e7ad8a65
PH
1764PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1765 code in os-type was giving problems when libc.so lives in lib64, like on
1766 x86_64 Fedora Core.
1767
ade42478
PH
1768PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1769 aren't the modern standard, and it seems that some systems' include files
1770 don't always have them. Exim was already checking for some of the newer
1771 ones like T_AAAA, and defining it itself. I've added checks for all the
1772 record types that Exim uses.
1773
182ad5cf
PH
1774PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1775 not automatically generating a new one, as it is supposed to. This
1776 prevented TLS from working. If the file did exist, but contained invalid
1777 data, a new version was generated, as expected. It was only the case of a
1778 non-existent file that was broken.
1779
b0d9fc80
TK
1780TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1781 with a change in libdomainkeys > 0.64.
1782
1783TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1784 from DNS. If the selector record carries the flag, it now has
1785 precedence over the domain-wide flag.
1786
1787TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1788
47c7a64a
PH
1789PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1790 the use of a port name that isn't defined in /etc/services) occurred, the
1791 message was deferred as in a normal delivery, and thus remained on the
1792 spool, instead of being failed because of the mua_wrapper setting. This
1793 is now fixed, and I tidied up some of the mua_wrapper messages at the
1794 same time.
1795
a388bce4
SC
1796SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1797 the messages in a hash of arrays rather than using individual hashes.
1798 This is a bit cleaner and results in dramatic memory savings, albeit
1799 at a slight CPU cost.
1800
1801SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1802 as requested by Marc Sherman.
1803
1804SC/10 Eximstats: added histograms for user specified patterns as requested
1805 by Marc Sherman.
1806
0793e4ed
SC
1807SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1808
c58b88df
PH
1809PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1810 fopen() in the content-scanning modules that did not already have it.
1811
e7ad8a65 1812
7982096b
PH
1813Exim version 4.51
1814-----------------
1815
1a46a8c5
PH
1816TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1817 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1818
2f079f46 1819TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1820
1821TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1822
1823PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1824 to test Sieve filters that use "vacation".
1825
1826PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1827 that changes the way the GnuTLS parameters are stored in the cache file.
1828 The new format can be generated externally. For backward compatibility,
1829 if the data in the cache doesn't make sense, Exim assumes it has read an
1830 old-format file, and it generates new data and writes a new file. This
1831 means that you can't go back to an older release without removing the
1832 file.
1833
1834PH/03 A redirect router that has both "unseen" and "one_time" set does not
1835 work if there are any delivery delays because "one_time" forces the
1836 parent to be marked "delivered", so its unseen clone is never tried
1837 again. For this reason, Exim now forbids the simultaneous setting of
1838 these two options.
1839
1840PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1841 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1842 entry if you want to know the details. The fix, however, neglected to
1843 consider the case when local delivery batching is involved. The test for
1844 "previously delivered" was not happening when checking to see if an
1845 address could be batched with a previous (undelivered) one; under
1846 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1847 address.
1a46a8c5
PH
1848
1849PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1850 in its include files, and this causes problems building Exim.
1851
1852PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1853 header_syntax) but Exim was just ignoring anything given after a slash.
1854 In particular, this caused confusion with an attempt to use "verify =
1855 reverse_host_lookup/defer_ok". An error is now given when options are
1856 supplied for verify items that do not have them. (Maybe reverse_host_
1857 lookup should have a defer_ok option, but that's a different point.)
1858
1859PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1860 defined by RFC 821) to 2048, because there were problems with some AUTH
1861 commands, and RFC 1869 says the size should be increased for extended
1862 SMTP commands that take arguments.
1863
1864PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1865 Finch).
1866
1867PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1868 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1869
49c2d5ea
PH
1870PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1871 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1872 whatever). Otherwise the password may appear in the log. Following change
1873 PH/42 below, there is no longer a chance of it appearing in a bounce
1874 message.
49c2d5ea 1875
bf759a8b
PH
1876PH/11 Installed exipick version 20050225.0 from John Jetmore.
1877
83364d30
PH
1878PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1879 of its addresses was ever tried. (Bugzilla bug #2.)
1880
7999bbd7
PH
1881PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1882 the result incorrectly in the debug output. (It correctly added a newline
1883 to what was transported.)
1884
7dbf77c9
PH
1885TF/01 Added $received_time.
1886
74e0617f
PH
1887PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1888 commented out examples of how to interface to a virus scanner and to
1889 SpamAssassin. Also added commented examples of av_scanner and
1890 spamd_address settings.
1891
2f079f46
PH
1892PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1893 and controls are allowed in which ACLs. There were a couple of minor
1894 errors. Some of the entries in the conditions table (which is a table of
1895 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1896 negation of where the condition IS allowed.
1897
8c841523
PH
1898PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1899
7766a4f0
PH
1900PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1901 header file does not have a version number, so I've had to invent a new
1902 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1903 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1904 radiusclient), but it was contributed by a Radius user.
1905
8b417f2c
PH
1906PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1907 files or directories, for OpenSSL.
1908
901f42cb
PH
1909PH/19 When an Exim process that is running as root has to create an Exim log
1910 file, it does so in a subprocess that runs as exim:exim so as to get the
1911 ownership right at creation (otherwise, other Exim processes might see
1912 the file with the wrong ownership). There was no test for failure of this
1913 fork() call, which would lead to the process getting stuck as it waited
1914 for a non-existent subprocess. Forks do occasionally fail when resources
1915 run out. I reviewed all the other calls to fork(); they all seem to check
1916 for failure.
1917
f9b9210e
PH
1918PH/20 When checking for unexpected SMTP input at connect time (before writing
1919 the banner), Exim was not dealing correctly with a non-positive return
1920 from the read() function. If the client had disconnected by this time,
1921 the result was a log entry for a synchronization error with an empty
1922 string after "input=" when read() returned zero. If read() returned -1
1923 (an event I could not check), uninitialized data bytes were printed.
1924 There were reports of junk text (parts of files, etc) appearing after
1925 "input=".
1926
54cdb463
PH
1927PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1928
cf00dad6
PH
1929PH/22 Added support for macro redefinition, and (re)definition in between
1930 driver and ACL definitions.
1931
acb1b346
PH
1932PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1933 forgetting to use the resulting value; it was using the unexpanded value.
1934
c5ddb310
PH
1935PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1936 hadn't been configured. The fix is from Juergen Kreileder, who
1937 understands it better than I do:
1938
1939 "Here's what I see happening with three configured cyrus_sasl
1940 authenticators configured (plain, login, cram-md5):
1941
1942 On startup auth_cyrus_sasl_init() gets called for each of these.
1943 This means three calls to sasl_listmech() without a specified mech_list.
1944 => SASL tests which mechs of all available mechs actually work
1945 => three warnings about OTP not working
1946 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1947
1948 With the patch, sasl_listmech() also gets called three times. But now
1949 SASL's mech_list option is set to the server_mech specified in the the
1950 authenticator. Or in other words, the answer from sasl_listmech()
1951 gets limited to just the mech you're testing for (which is different
1952 for each call.)
1953 => the return list contains just 'plain' or 'login', 'cram-md5' or
1954 nothing depending on the value of ob->server_mech.
1955
1956 I've just tested the patch: Authentication still works fine,
1957 unavailable mechs specified in the exim configuration are still
1958 caught, and the auth.log warnings about OTP are gone."
1959
31619da6
PH
1960PH/25 When debugging is enabled, the contents of the command line are added
1961 to the debugging output, even when log_selector=+arguments is not
1962 specified.
1963
bebaf0fc
PH
1964PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1965 answer is "GNU", and only if the return is "GNU/something" is the answer
1966 "Linux".
1967
475fe28a
PH
1968PH/27 $acl_verify_message is now set immediately after the failure of a
1969 verification in an ACL, and so is available in subsequent modifiers. In
1970 particular, the message can be preserved by coding like this:
1971
1972 warn !verify = sender
1973 set acl_m0 = $acl_verify_message
1974
1975 Previously, $acl_verify_message was set only while expanding "message"
1976 and "log_message" when a very denied access.
1977
7e8bec7a
PH
1978PH/28 Modified OS/os.c-Linux with
1979
1980 -#ifndef OS_LOAD_AVERAGE
1981 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1982
1983 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1984 nomenclature these days.)
1985
e4a89c47
PH
1986PH/29 Installed patch from the Sieve maintainer that adds the options
1987 sieve_useraddress and sieve_subaddress to the redirect router.
1988
5ca2a9a1
PH
1989PH/30 In these circumstances:
1990 . Two addresses routed to the same list of hosts;
1991 . First host does not offer TLS;
1992 . First host accepts first address;
1993 . First host gives temporary error to second address;
1994 . Second host offers TLS and a TLS session is established;
1995 . Second host accepts second address.
1996 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1997 and peerdn, if requested) that were in fact used only for the second
1998 address.
7e8bec7a 1999
c688b954
PH
2000PH/31 When doing a callout as part of verifying an address, Exim was not paying
2001 attention to any local part prefix or suffix that was matched by the
2002 router that accepted the address. It now behaves in the same way as it
2003 does for delivery: the affixes are removed from the local part unless
2004 rcpt_include_affixes is set on the transport.
2005
fed77020
PH
2006PH/32 Add the sender address, as F=<...>, to the log line when logging a
2007 timeout during the DATA phase of an incoming message.
2008
7fe1560f
PH
2009PH/33 Sieve envelope tests were broken for match types other than :is. I have
2010 applied a patch sanctioned by the Sieve maintainer.
c688b954 2011
ebb6e6d5
PH
2012PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2013 the uid or gid is negative. A case of a negative gid caused this to be
2014 noticed. The fix allows for either to be negative.
2015
9c4e8f60
PH
2016PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2017 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2018 overlooked.
2019
2020PH/36 The change PH/12 above was broken. Fixed it.
2021
d7174846
PH
2022PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2023 the grounds that routing the same address twice would always produce the
2024 same answer. This might have been true once, but it is certainly no
2025 longer true now. Routing a child address may depend on the previous
2026 routing that produced that child. Some complicated redirection strategies
2027 went wrong when messages had multiple recipients, and made Exim's
2028 behaviour dependent on the order in which the addresses were given.
2029
2030 I have moved the duplicate checking until after the routing is complete.
2031 Exim scans the addresses that are assigned to local and remote
2032 transports, and removes any duplicates. This means that more work will be
2033 done, as duplicates will always all be routed, but duplicates are
2034 presumably rare, so I don't expect this is of any significance.
2035
2036 For deliveries to pipes, files, and autoreplies, the duplicate checking
2037 still happens during the routing process, since they are not going to be
2038 routed further.
2039
cfe75fc3
PH
2040PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2041 It corrects a timeout issue with spamd. This is Ian's comment: "The
2042 background is that sometimes spamd either never reads data from a
2043 connection it has accepted, or it never writes response data. The exiscan
2044 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2045 blindly assumes that writes won't block so it may never time out."
2046
be22d70e
PH
2047PH/39 Allow G after quota size as well as K and M.
2048
0612b098
PH
2049PH/40 The value set for $authenticated_id in an authenticator may not contain
2050 binary zeroes or newlines because the value is written to log lines and
2051 to spool files. There was no check on this. Now the value is run through
2052 the string_printing() function so that such characters are converted to
2053 printable escape sequences.
2054
2e0c1448
PH
2055PH/41 $message_linecount is a new variable that contains the total number of
2056 lines in the message. Compare $body_linecount, which is the count for the
2057 body only.
2058
447d236c
PH
2059PH/42 Exim no longer gives details of delivery errors for specific addresses in
2060 bounce and delay warning messages, except in certain special cases, which
2061 are as follows:
2062
2063 (a) An SMTP error message from a remote host;
2064 (b) A message specified in a :fail: redirection;
2065 (c) A message specified in a "fail" command in a system filter;
2066 (d) A message specified in a FAIL return from the queryprogram router;
2067 (e) A message specified by the cannot_route_message router option.
2068
2069 In these cases only, Exim does include the error details in bounce and
2070 warning messages. There are also a few cases where bland messages such
2071 as "unrouteable address" or "local delivery error" are given.
2072
d20976dc
PH
2073PH/43 $value is now also set for the "else" part of a ${run expansion.
2074
f656d135
PH
2075PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2076 being worked on, but at least Exim now implements the latest version to
2077 play with."
2078
2e2a30b4
PH
2079PH/45 In a pipe transport, although a timeout while waiting for the pipe
2080 process to complete was treated as a delivery failure, a timeout while
2081 writing the message to the pipe was logged, but erroneously treated as a
2082 successful delivery. Such timeouts include transport filter timeouts. For
2083 consistency with the overall process timeout, these timeouts are now
2084 treated as errors, giving rise to delivery failures by default. However,
2085 there is now a new Boolean option for the pipe transport called
2086 timeout_defer, which, if set TRUE, converts the failures into defers for
2087 both kinds of timeout. A transport filter timeout is now identified in
2088 the log output.
2089
9176e9f0
PH
2090PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2091 systems where "make" and "gmake" are different, calling "gmake" at top
2092 level broke things. I've arranged for the value of $(MAKE) to be passed
2093 from the Makefile to this script so that it can call the same version of
2094 "make".
2095
7982096b 2096
bbe902f0
PH
2097A note about Exim versions 4.44 and 4.50
2098----------------------------------------
2099
2100Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2101changes of various kinds. As a consequence, a big documentation update was
2102needed. This delayed the release for rather longer than seemed good, especially
2103in the light of a couple of (minor) security issues. Therefore, the changes
2104that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2105release. So 4.44 and 4.50 are in effect two different branches that both start
2106from 4.43.
2107
2108I have left the 4.50 change log unchanged; it contains all the changes since
21094.43. The change log for 4.44 is below; many of its items are identical to
2110those for 4.50. This seems to be the most sensible way to preserve the
2111historical information.
2112
2113
f7b63901 2114Exim version 4.50
495ae4b0
PH
2115-----------------
2116
5fe762f6
PH
2117 1. Minor wording change to the doc/README.SIEVE file.
2118
139059f6 2119 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2120 computation of the current number of files was incorrect.
495ae4b0 2121
7086e875
PH
2122 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2123 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2124 place.
2125
35af9f61
PH
2126 4. Give more explanation in the error message when the command for a transport
2127 filter fails to execute.
2128
b668c215
PH
2129 5. There are several places where Exim runs a non-Exim command in a
2130 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2131 was being done only for the command run by the queryprogram router. It is
2132 now done for all such subprocesses. The other cases are: ${run, transport
2133 filters, and the commands run by the lmtp and pipe transports.
2134
a494b1e1
PH
2135 6. Added CONFIGURE_GROUP build-time option.
2136
2137 7. Some older OS have a limit of 256 on the maximum number of file
2138 descriptors. Exim was using setrlimit() to set 1000 as a large value
2139 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2140 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2141
c5fcb476
PH
2142 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2143 was an oversight, and furthermore, ever since the addition of extra
2144 controls (e.g. 4.43/32), the checks on when to allow different forms of
2145 "control" were broken. There should now be diagnostics for all cases when a
2146 control that does not make sense is encountered.
2147
69358f02
PH
2148 9. Added the /retain_sender option to "control=submission".
2149
5be20824
PH
215010. $recipients is now available in the predata ACL (oversight).
2151
eb2c0248
PH
215211. Tidy the search cache before the fork to do a delivery from a message
2153 received from the command line. Otherwise the child will trigger a lookup
2154 failure and thereby defer the delivery if it tries to use (for example) a
2155 cached ldap connection that the parent has called unbind on.
2156
2a3eea10
PH
215712. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2158 of $address_data from the recipient verification was clobbered by the
2159 sender verification.
2160
216113. The value of address_data from a sender verification is now available in
2162 $sender_address_data in subsequent conditions in the ACL statement.
2163
23c7ff99
PH
216414. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2165
4deaf07d
PH
216615. Added a new option "connect=<time>" to callout options, to set a different
2167 connection timeout.
2168
926e1192
PH
216916. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2170 was its contents. (It was OK if the option was not defined at all.)
2171
650edc6f
PH
217217. A "Completed" log line is now written for messages that are removed from
2173 the spool by the -Mrm option.
2174
2c7db3f5
PH
217518. New variables $sender_verify_failure and $recipient_verify_failure contain
2176 information about exactly what failed.
2177
3d235903
PH
217819. Added -dd to debug only the daemon process.
2179
7c7ad977
PH
218020. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2181 handles timeouts, both on the server side and network timeouts. Renamed the
2182 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2183
981756db
PH
218421. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2185 It is now set to "smtps".
2186
d4eb88df
PH
218722. $host_address is now set to the target address during the checking of
2188 ignore_target_hosts.
2189
219023. When checking ignore_target_hosts for an ipliteral router, no host name was
2191 being passed; this would have caused $sender_host_name to have been used if
2192 matching the list had actually called for a host name (not very likely,
2193 since this list is usually IP addresses). A host name is now passed as
2194 "[x.x.x.x]".
2195
7d468ab8
PH
219624. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2197 code that specifies a non-restarting handler (typically sigaction() in
2198 modern systems) in an attempt to fix a rare and obscure crash bug.
2199
220025. Narrowed the window for a race in the daemon that could cause it to ignore
2201 SIGCHLD signals. This is not a major problem, because they are used only to
2202 wake it up if nothing else does.
2203
62c0818f
PH
220426. A malformed maildirsize file could cause Exim to calculate negative values
2205 for the mailbox size or file count. Odd effects could occur as a result.
2206 The maildirsize information is now recalculated if the size or filecount
2207 end up negative.
2208
26034054
PH
220927. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2210 support for a long time. Removed HAVE_SYS_VFS_H.
2211
af66f652
PH
221228. Installed the latest version of exipick from John Jetmore.
2213
90af77f4
PH
221429. In an address list, if the pattern was not a regular expression, an empty
2215 subject address (from a bounce message) matched only if the pattern was an
2216 empty string. Non-empty patterns were not even tested. This was the wrong
2217 because it is perfectly reasonable to use an empty address as part of a
2218 database query. An empty address is now tested by patterns that are
2219 lookups. However, all the other forms of pattern expect the subject to
2220 contain a local part and a domain, and therefore, for them, an empty
2221 address still always fails if the pattern is not itself empty.
2222
d8ef3577
PH
222330. Exim went into a mad DNS loop when attempting to do a callout where the
2224 host was specified on an smtp transport, and looking it up yielded more
2225 than one IP address.
2226
5cb8cbc6
PH
222731. Re-factored the code for checking spool and log partition space into a
2228 function that finds that data and another that does the check. The former
2229 is then used to implement four new variables: $spool_space, $log_space,
2230 $spool_inodes, and $log_inodes.
2231
14702f5b
PH
223232. The RFC2047 encoding function was originally intended for short strings
2233 such as real names; it was not keeping to the 75-character limit for
2234 encoded words that the RFC imposes. It now respects the limit, and
2235 generates multiple encoded words if necessary. To be on the safe side, I
2236 have increased the buffer size for the ${rfc2047: expansion operator from
2237 1024 to 2048 bytes.
2238
063b1e99
PH
223933. It is now permitted to omit both strings after an "if" condition; if the
2240 condition is true, the result is "true". As before, when the second string
2241 is omitted, a false condition yields an empty string. This makes it less
2242 cumbersome to write custom ACL and router conditions.
2243
652e1b65
PH
224434. Failure to deliver a bounce message always caused it to be frozen, even if
2245 there was an errors_to setting on the router. The errors_to setting is now
2246 respected.
2247
6f0c9a4f
PH
224835. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2249 canonical form (fully expanded) before being placed in
2250 $sender_host_address.
2251
33397d19
PH
225236. The table in the code that translates DNS record types into text (T_A to
2253 "A" for instance) was missing entries for NS and CNAME. It is just possible
2254 that this could have caused confusion if both these types were looked up
2255 for the same domain, because the text type is used as part of Exim's
2256 per-process caching. But the chance of anyone hitting this buglet seems
2257 very small.
2258
7bb56e1f
PH
225937. The dnsdb lookup has been extended in a number of ways.
2260
2261 (1) There is a new type, "zns", which walks up the domain tree until it
2262 finds some nameserver records. It should be used with care.
2263
ea3bc19b
PH
2264 (2) There is a new type, "mxh", which is like "mx" except that it returns
2265 just the host names, not the priorities.
2266
2267 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2268 looked up. The behaviour when one of the lookups defers can be
2269 controlled by a keyword.
7bb56e1f 2270
ea3bc19b 2271 (4) It is now possible to specify the separator character for use when
7bb56e1f 2272 multiple records are returned.
33397d19 2273
0bcb2a0e
PH
227438. The dnslists ACL condition has been extended: it is now possible to supply
2275 a list of IP addresses and/or domains to be looked up in a particular DNS
2276 domain.
2277
2ac0e484
PH
227839. Added log_selector=+queue_time_overall.
2279
4e1fde53
PH
228040. When running the queue in the test harness, wait just a tad after forking a
2281 delivery process, to get repeatability of debugging output.
2282
de365ded
PH
228341. Include certificate and key file names in error message when GnuTLS fails
2284 to set them up, because the GnuTLS error message doesn't include the name
2285 of the failing file when there is a problem reading it.
2286
f05da2e8
PH
228742. Allow both -bf and -bF in the same test run.
2288
d6453af2
PH
228943. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2290
f7b63901
PH
229144. The "Exiscan patch" is now merged into the mainline Exim source.
2292
229345. Sometimes the final signoff response after QUIT could fail to get
2294 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2295 < 0 before doing a fflush(). This bug looks as though it goes back to the
2296 introduction of TLS in release 3.20, but "sometimes" must have been rare
2297 because the tests only now provoked it.
2298
a444213a
PH
229946. Reset the locale to "C" after calling embedded Perl, in case it was changed
2300 (this can affect the format of dates).
2301
0ec020ea
PH
230247. exim_tidydb, when checking for the continued existence of a message for
2303 which it has found a message-specific retry record, was not finding
2304 messages that were in split spool directories. Consequently, it was
2305 deleting retry records that should have stayed in existence.
2306
b1206957
PH
230748. Steve fixed some bugs in eximstats.
2308
230949. The SPA authentication driver was not abandoning authentication and moving
2310 on to the next authenticator when an expansion was forced to fail,
2311 contradicting the general specification for all authenticators. Instead it
2312 was generating a temporary error. It now behaves as specified.
2313
26dd5a95
PH
231450. The default ordering of permitted cipher suites for GnuTLS was pessimal
2315 (the order specifies the preference for clients). The order is now AES256,
2316 AES128, 3DES, ARCFOUR128.
2317
343b2385
PH
231851. Small patch to Sieve code - explicitly set From: when generating an
2319 autoreply.
2320
1c5466b9
PH
232152. Exim crashed if a remote delivery caused a very long error message to be
2322 recorded - for instance if somebody sent an entire SpamAssassin report back
2323 as a large number of 550 error lines. This bug was coincidentally fixed by
2324 increasing the size of one of Exim's internal buffers (big_buffer) that
2325 happened as part of the Exiscan merge. However, to be on the safe side, I
2326 have made the code more robust (and fixed the comments that describe what
2327 is going on).
2328
55ee9ee3
PH
232953. Now that there can be additional text after "Completed" in log lines (if
2330 the queue_time_overall log selector is set), a one-byte patch to exigrep
2331 was needed to allow it to recognize "Completed" as not the last thing in
2332 the line.
2333
d38f8232
PH
233454. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2335 patch that reportedly fixes this has been added. I am not expert enough to
2336 create a test for it. This is what the patch creator wrote:
2337
2338 "I found a little strange behaviour of ldap code when working with
2339 Windows 2003 AD Domain, where users was placed in more than one
2340 Organization Units. When I tried to give exim partial DN, the exit code
2341 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2342 But simultaneously result of request was absolutely normal ldap result,
2343 so I produce this patch..."
2344
3295e65b
PH
2345 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2346 REFERENCE, so I have modified the code to exclude the patch when that macro
2347 is not defined.
2348
7102e136
PH
234955. Some experimental protocols are using DNS PTR records for new purposes. The
2350 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2351 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2352 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2353 CAN-2005-0021
7102e136 2354
3ca0ba97
PH
235556. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2356
c2bcbe20
PH
235757. Double the size of the debug message buffer (to 2048) so that more of very
2358 long debug lines gets shown.
2359
18ce445d
PH
236058. The exicyclog utility now does better if the number of log files to keep
2361 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2362
1f5b4c3d
PH
236359. Two changes related to the smtp_active_hostname option:
2364
2365 (1) $smtp_active_hostname is now available as a variable.
2366 (2) The default for smtp_banner uses $smtp_active_hostname instead
2367 of $primary_hostname.
2368
b975ba52
PH
236960. The host_aton() function is supposed to be passed a string that is known
2370 to be a valid IP address. However, in the case of IPv6 addresses, it was
2371 not checking this. This is a hostage to fortune. Exim now panics and dies
2372 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2373 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2374 components; fortuitously, this particular loophole had already been fixed
2375 by change 4.50/55 above.
2376
2377 If there are any other similar loopholes, the new check in host_aton()
2378 itself should stop them being exploited. The report I received stated that
2379 data on the command line could provoke the exploit when Exim was running as
2380 exim, but did not say which command line option was involved. All I could
2381 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2382 running as the user.
ea3a6f44 2383 CAN-2005-0021
85b87bc2
PH
2384
238561. There was a buffer overflow vulnerability in the SPA authentication code
2386 (which came originally from the Samba project). I have added a test to the
2387 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2388 CAN-2005-0022
b975ba52 2389
17ffcae7
PH
239062. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2391 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2392
d95f9fdb
PH
239363. The daemon start-up calls getloadavg() while still root for those OS that
2394 need the first call to be done as root, but it missed one case: when
2395 deliver_queue_load_max is set with deliver_drop_privilege. This is
2396 necessary for the benefit of the queue runner, because there is no re-exec
2397 when deliver_drop_privilege is set.
2398
86b8287f
PH
239964. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2400 This has been fixed.
2401
60dc5e56
PH
240265. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2403 was in use, was not putting the data itself into the right store pool;
2404 consequently, it could be overwritten for a subsequent message in the same
2405 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2406 the caching.)
2407
533244af
PH
240866. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2409
a5a28604
PH
241067. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2411 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2412 the function were treating the return as a boolean value, which happened to
2413 work because 0=false and not-0=true, but is not correct code.
2414
7e634d24
PH
241568. The host_aton() function was not handling scoped IPv6 addresses (those
2416 with, for example, "%eth0" on the end) correctly.
2417
3e11c26b
PH
241869. Fixed some compiler warnings in acl.c for the bitmaps specified with
2419 negated items (that is, ~something) in unsigned ints. Some compilers
2420 apparently mutter when there is no cast.
2421
6729cf78
PH
242270. If an address verification called from an ACL failed, and did not produce a
2423 user-specific message (i.e. there was only a "system" message), nothing was
2424 put in $acl_verify_message. In this situation, it now puts the system
2425 message there.
2426
00f00ca5
PH
242771. Change 4.23/11 added synchronization checking at the start of an SMTP
2428 session; change 4.31/43 added the unwanted input to the log line - except
2429 that it did not do this in the start of session case. It now does.
2430
c9bdd01c
PH
243172. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2432 This is wrong and can cause the other end to generate a synchronization
2433 error if it is another Exim or anything else that does the synchronization
2434 check. A QUIT command is no longer sent after a timeout.
2435
d43194df
PH
243673. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2437 during host lookups.
2438
fe5b5d0b
PH
243974. The defer_ok option of callout verification was not working if it was used
2440 when verifying addresses in header lines, that is, for this case:
2441
2442 verify = header_sender/callout=defer_ok
2443
76a2d7ba
PH
244475. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2445 those file descriptors could be used for SMTP connections. If anything
2446 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2447 could be sent to the SMTP client, causing chaos. The daemon now opens
2448 stdin, stdout, and stderr to /dev/null when it puts itself into the
2449 background.
2450
245176. Arrange for output from Perl's "warn" command to be written to Exim's main
2452 log by default. The user can override this with suitable Perl magic.
2453
04f7d5b9
PH
245477. The use of log_message on a "discard" ACL verb, which is supposed to add to
2455 the log message when discard triggers, was not working for the DATA ACL or
2456 for the non-SMTP ACL.
2457
bc60667e
PH
245878. Error message wording change in sieve.c.
2459
bb6e88ff
PH
246079. If smtp_accept_max_per_host was set, the number of connections could be
2461 restricted to fewer than expected, because the daemon was trying to set up
2462 a new connection before checking whether the processes handling previous
2463 connections had finished. The check for completed processes is now done
2464 earlier. On busy systems, this bug wouldn't be noticed because something
2465 else would have woken the daemon, and it would have reaped the completed
2466 process earlier.
2467
1e70f85b
PH
246880. If a message was submitted locally by a user whose login name contained one
2469 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2470 It caused a spool format error. I have fixed the spool reading code. A
2471 related problem was that the "from" clause in the Received: line became
2472 illegal because of the space(s). It is now covered by ${quote_local_part.
2473
247481. Included the latest eximstats from Steve (adds average sizes to HTML Top
2475 tables).
2476
4e01f9d6
PH
247782. Updated OS/Makefile-AIX as per message from Mike Meredith.
2478
1ee1cef2
PH
247983. Patch from Sieve maintainer to fix unterminated string problem in
2480 "vacation" handling.
2481
6e2b4ccc
PH
248284. Some minor changes to the Linux configuration files to help with other
2483 OS variants using glibc.
2484
8e669ac1
PH
248585. One more patch for Sieve to update vacation handling to latest spec.
2486
495ae4b0 2487
bbe902f0
PH
2488----------------------------------------------------
2489See the note above about the 4.44 and 4.50 releases.
2490----------------------------------------------------
2491
2492
2493Exim version 4.44
2494-----------------
2495
2496 1. Change 4.43/35 introduced a bug that caused file counts to be
2497 incorrectly computed when quota_filecount was set in an appendfile
2498 transport
2499
2500 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2501 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2502 place.
2503
2504 3. Give more explanation in the error message when the command for a transport
2505 filter fails to execute.
2506
2507 4. There are several places where Exim runs a non-Exim command in a
2508 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2509 was being done only for the command run by the queryprogram router. It is
2510 now done for all such subprocesses. The other cases are: ${run, transport
2511 filters, and the commands run by the lmtp and pipe transports.
2512
2513 5. Some older OS have a limit of 256 on the maximum number of file
2514 descriptors. Exim was using setrlimit() to set 1000 as a large value
2515 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2516 systems. I've change it so that if it can't get 1000, it tries for 256.
2517
2518 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2519 was an oversight, and furthermore, ever since the addition of extra
2520 controls (e.g. 4.43/32), the checks on when to allow different forms of
2521 "control" were broken. There should now be diagnostics for all cases when a
2522 control that does not make sense is encountered.
2523
2524 7. $recipients is now available in the predata ACL (oversight).
2525
2526 8. Tidy the search cache before the fork to do a delivery from a message
2527 received from the command line. Otherwise the child will trigger a lookup
2528 failure and thereby defer the delivery if it tries to use (for example) a
2529 cached ldap connection that the parent has called unbind on.
2530
2531 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2532 of $address_data from the recipient verification was clobbered by the
2533 sender verification.
2534
253510. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2536 was its contents. (It was OK if the option was not defined at all.)
2537
253811. A "Completed" log line is now written for messages that are removed from
2539 the spool by the -Mrm option.
2540
254112. $host_address is now set to the target address during the checking of
2542 ignore_target_hosts.
2543
254413. When checking ignore_target_hosts for an ipliteral router, no host name was
2545 being passed; this would have caused $sender_host_name to have been used if
2546 matching the list had actually called for a host name (not very likely,
2547 since this list is usually IP addresses). A host name is now passed as
2548 "[x.x.x.x]".
2549
255014. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2551 code that specifies a non-restarting handler (typically sigaction() in
2552 modern systems) in an attempt to fix a rare and obscure crash bug.
2553
255415. Narrowed the window for a race in the daemon that could cause it to ignore
2555 SIGCHLD signals. This is not a major problem, because they are used only to
2556 wake it up if nothing else does.
2557
255816. A malformed maildirsize file could cause Exim to calculate negative values
2559 for the mailbox size or file count. Odd effects could occur as a result.
2560 The maildirsize information is now recalculated if the size or filecount
2561 end up negative.
2562
256317. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2564 support for a long time. Removed HAVE_SYS_VFS_H.
2565
ea3a6f44 256618. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2567
256819. Allow an empty sender to be matched against a lookup in an address list.
2569 Previously the only cases considered were a regular expression, or an
2570 empty pattern.
2571
257220. Exim went into a mad DNS lookup loop when doing a callout where the
2573 host was specified on the transport, if the DNS lookup yielded more than
2574 one IP address.
2575
ea3a6f44
NM
257621. The RFC2047 encoding function was originally intended for short strings
2577 such as real names; it was not keeping to the 75-character limit for
2578 encoded words that the RFC imposes. It now respects the limit, and
2579 generates multiple encoded words if necessary. To be on the safe side, I
2580 have increased the buffer size for the ${rfc2047: expansion operator from
2581 1024 to 2048 bytes.
bbe902f0 2582
ea3a6f44
NM
258322. Failure to deliver a bounce message always caused it to be frozen, even if
2584 there was an errors_to setting on the router. The errors_to setting is now
2585 respected.
bbe902f0
PH
2586
258723. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2588 canonical form (fully expanded) before being placed in
2589 $sender_host_address.
2590
259124. Updated eximstats to version 1.33
2592
ea3a6f44
NM
259325. Include certificate and key file names in error message when GnuTLS fails
2594 to set them up, because the GnuTLS error message doesn't include the name
2595 of the failing file when there is a problem reading it.
bbe902f0
PH
2596
259726. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2598 As per change 25.
bbe902f0 2599
ea3a6f44
NM
260027. Reset the locale to "C" after calling embedded Perl, in case it was changed
2601 (this can affect the format of dates).
bbe902f0 2602
ea3a6f44
NM
260328. exim_tidydb, when checking for the continued existence of a message for
2604 which it has found a message-specific retry record, was not finding
2605 messages that were in split spool directories. Consequently, it was
2606 deleting retry records that should have stayed in existence.
bbe902f0
PH
2607
260829. eximstats updated to version 1.35
2609 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2610 1.35 - bugfix such that pie charts by volume are generated correctly
2611
ea3a6f44
NM
261230. The SPA authentication driver was not abandoning authentication and moving
2613 on to the next authenticator when an expansion was forced to fail,
2614 contradicting the general specification for all authenticators. Instead it
2615 was generating a temporary error. It now behaves as specified.
bbe902f0 2616
ea3a6f44
NM
261731. The default ordering of permitted cipher suites for GnuTLS was pessimal
2618 (the order specifies the preference for clients). The order is now AES256,
2619 AES128, 3DES, ARCFOUR128.
bbe902f0 2620
ea3a6f44
NM
262131. Small patch to Sieve code - explicitly set From: when generating an
2622 autoreply.
bbe902f0 2623
ea3a6f44
NM
262432. Exim crashed if a remote delivery caused a very long error message to be
2625 recorded - for instance if somebody sent an entire SpamAssassin report back
2626 as a large number of 550 error lines. This bug was coincidentally fixed by
2627 increasing the size of one of Exim's internal buffers (big_buffer) that
2628 happened as part of the Exiscan merge. However, to be on the safe side, I
2629 have made the code more robust (and fixed the comments that describe what
2630 is going on).
bbe902f0 2631
ea3a6f44
NM
263233. Some experimental protocols are using DNS PTR records for new purposes. The
2633 keys for these records are domain names, not reversed IP addresses. The
2634 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2635 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2636 CAN-2005-0021
2637
ea3a6f44
NM
263834. The host_aton() function is supposed to be passed a string that is known
2639 to be a valid IP address. However, in the case of IPv6 addresses, it was
2640 not checking this. This is a hostage to fortune. Exim now panics and dies
2641 if the condition is not met. A case was found where this could be provoked
2642 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2643 components; fortuitously, this particular loophole had already been fixed
2644 by change 4.50/55 or 4.44/33 above.
2645
2646 If there are any other similar loopholes, the new check in host_aton()
2647 itself should stop them being exploited. The report I received stated that
2648 data on the command line could provoke the exploit when Exim was running as
2649 exim, but did not say which command line option was involved. All I could
2650 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2651 running as the user.
bbe902f0
PH
2652 CAN-2005-0021
2653
ea3a6f44
NM
265435. There was a buffer overflow vulnerability in the SPA authentication code
2655 (which came originally from the Samba project). I have added a test to the
2656 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2657 CAN-2005-0022
2658
ea3a6f44
NM
265936. The daemon start-up calls getloadavg() while still root for those OS that
2660 need the first call to be done as root, but it missed one case: when
2661 deliver_queue_load_max is set with deliver_drop_privilege. This is
2662 necessary for the benefit of the queue runner, because there is no re-exec
2663 when deliver_drop_privilege is set.
bbe902f0 2664
ea3a6f44
NM
266537. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2666 was in use, was not putting the data itself into the right store pool;
2667 consequently, it could be overwritten for a subsequent message in the same
2668 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2669 the caching.)
bbe902f0 2670
ea3a6f44
NM
267138. Sometimes the final signoff response after QUIT could fail to get
2672 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2673 < 0 before doing a fflush(). This bug looks as though it goes back to the
2674 introduction of TLS in release 3.20, but "sometimes" must have been rare
2675 because the tests only now provoked it.
bbe902f0
PH
2676
2677
495ae4b0
PH
2678Exim version 4.43
2679-----------------
2680
2681 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2682 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2683 Now it returns an integer. A number of calls were still expecting a T/F
2684 return. Fortuitously, in all cases, the tests worked in OK situations,
2685 which is the norm. However, things would have gone wrong on any write
2686 failures on the smtp file descriptor. This function is used when sending
2687 messages over SMTP and also when doing verify callouts.
2688
2689 2. When Exim is called to do synchronous delivery of a locally submitted
2690 message (the -odf or -odi options), it no longer closes stderr before doing
2691 the delivery.
2692
2693 3. Implemented the mua_wrapper option.
2694
2695 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2696
2697 5. Implemented the functions header_remove(), header_testname(),
2698 header_add_at_position(), and receive_remove_recipient(), and exported them
2699 to local_scan().
2700
2701 6. If an ACL "warn" statement specified the addition of headers, Exim already
2702 inserted X-ACL-Warn: at the start if there was no header name. However, it
2703 was not making this test for the second and subsequent header lines if
2704 there were newlines in the string. This meant that an invalid header could
2705 be inserted if Exim was badly configured.
2706
2707 7. Allow an ACL "warn" statement to add header lines at the start or after all
2708 the Received: headers, as well as at the end.
2709
2710 8. Added the rcpt_4xx retry error code.
2711
2712 9. Added postmaster_mailfrom=xxx to callout verification option.
2713
271410. Added mailfrom=xxxx to the callout verification option, for verify=
2715 header_sender only.
2716
271711. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2718 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2719
272012. Inserted some casts to stop certain compilers warning when using pointer
2721 differences as field lengths or precisions in printf-type calls (mostly
2722 affecting debugging statements).
2723
272413. Added optional readline() support for -be (dynamically loaded).
2725
272614. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2727 same clock tick as a message's arrival, so that its received time was the
2728 same as the "first fail" time on the retry record, and that message
2729 remained on the queue past the ultimate address timeout, every queue runner
2730 would try a delivery (because it was past the ultimate address timeout) but
2731 after another failure, the ultimate address timeout, which should have then
2732 bounced the address, did not kick in. This was a "< instead of <=" error;
2733 in most cases the first failure would have been in the next clock tick
2734 after the received time, and all would be well.
2735
273615. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2737 being recognized when the domain list was tested by the match_domain
2738 condition in an expansion string.
2739
274016. Added the ${str2b64: operator.
2741
274217. Exim was always calling setrlimit() to set a large limit for the number of
2743 processes, without checking whether the existing limit was already
2744 adequate. (It did check for the limit on file descriptors.) Furthermore,
2745 errors from getrlimit() and setrlimit() were being ignored. Now they are
2746 logged to the main and panic logs, but Exim does carry on, to try to do its
2747 job under whatever limits there are.
2748
274918. Imported PCRE 5.0.
2750
275119. Trivial typo in log message " temporarily refused connection" (the leading
2752 space).
2753
275420. If the log selector return_path_on_delivery was set and an address was
2755 redirected to /dev/null, the delivery process crashed because it assumed
2756 that a return path would always be set for a "successful" delivery. In this
2757 case, the whole delivery is bypassed as an optimization, and therefore no
2758 return path is set.
2759
276021. Internal re-arrangement: the function for sending a challenge and reading
2761 a response while authentication was assuming a zero-terminated challenge
2762 string. It's now changed to take a pointer and a length, to allow for
2763 binary data in such strings.
2764
276522. Added the cyrus_sasl authenticator (code supplied by MBM).
2766
276723. Exim was not respecting finduser_retries when seeking the login of the
2768 uid under which it was called; it was always trying 10 times. (The default
2769 setting of finduser_retries is zero.) Also, it was sleeping after the final
2770 failure, which is pointless.
2771
277224. Implemented tls_on_connect_ports.
2773
277425. Implemented acl_smtp_predata.
2775
277626. If the domain in control=submission is set empty, Exim assumes that the
2777 authenticated id is a complete email address when it generates From: or
2778 Sender: header lines.
2779
278027. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2781 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2782 chown and chgrp in /bin and hostname in /usr/bin.
2783
278428. Exim was keeping the "process log" file open after each use, just as it
2785 does for the main log. This opens the possibility of it remaining open for
2786 long periods when the USR1 signal hits a daemon. Occasional processlog
2787 errors were reported, that could have been caused by this. Anyway, it seems
2788 much more sensible not to leave this file open at all, so that is what now
2789 happens.
2790
279129. The long-running daemon process does not normally write to the log once it
2792 has entered its main loop, and it closes the log before doing so. This is
2793 so that log files can straightforwardly be renamed and moved. However,
2794 there are a couple of unusual error situations where the daemon does write
2795 log entries, and I had neglected to close the log afterwards.
2796
279730. The text of an SMTP error response that was received during a remote
2798 delivery was being truncated at 512 bytes. This is too short for some of
2799 the long messages that one sometimes sees. I've increased the limit to
2800 1024.
2801
280231. It is now possible to make retry rules that apply only when a message has a
2803 specific sender, in particular, an empty sender.
2804
280532. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2806 it possible to be selective about when SMTP synchronization is enforced.
2807
280833. Added "control = caseful_local_part" and "control = "caselower_local_part".
2809
281032. Implemented hosts_connection_nolog.
2811
281233. Added an ACL for QUIT.
2813
281434. Setting "delay_warning=" to disable warnings was not working; it gave a
2815 syntax error.
2816
281735. Added mailbox_size and mailbox_filecount to appendfile.
2818
281936. Added control = no_multiline_responses to ACLs.
2820
282137. There was a bug in the logic of the code that waits for the clock to tick
2822 in the case where the clock went backwards by a substantial amount such
2823 that the microsecond fraction of "now" was more than the microsecond
2824 fraction of "then" (but the whole seconds number was less).
2825
282638. Added support for the libradius Radius client library this is found on
2827 FreeBSD (previously only the radiusclient library was supported).
2828
2829
2830Exim version 4.42
2831-----------------
2832
2833 1. When certain lookups returned multiple values in the form name=value, the
2834 quoting of the values was not always being done properly. Specifically:
2835 (a) If the value started with a double quote, but contained no whitespace,
2836 it was not quoted.
2837 (b) If the value contained whitespace other than a space character (i.e.
2838 tabs or newlines or carriage returns) it was not quoted.
2839 This fix has been applied to the mysql and pgsql lookups by writing a
2840 separate quoting function and calling it from the lookup code. The fix
2841 should probably also be applied to nisplus, ibase and oracle lookups, but
2842 since I cannot test any of those, I have not disturbed their existing code.
2843
2844 2. A hit in the callout cache for a specific address caused a log line with no
2845 reason for rejecting RCPT. Now it says "Previous (cached) callout
2846 verification failure".
2847
2848 3. There was an off-by-one bug in the queryprogram router. An over-long
2849 return line was truncated at 256 instead of 255 characters, thereby
2850 overflowing its buffer with the terminating zero. As well as fixing this, I
2851 have increased the buffer size to 1024 (and made a note to document this).
2852
2853 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2854 when Exim is waiting for an SMTP response from a remote server, Exim
2855 restarts its select() call on the socket, thereby resetting its timeout.
2856 This is not a problem when such interrupts are rare. Somebody set up a cron
2857 job to run exiwhat every 2 minutes, which is less than the normal select()
2858 timeout (5 or 10 minutes). This meant that the select() timeout never
2859 kicked in because it was always reset. I have fixed this by comparing the
2860 time when an interrupt arrives with the time at the start of the first call
2861 to select(). If more time than the timeout has elapsed, the interrupt is
2862 treated as a timeout.
2863
2864 5. Some internal re-factoring in preparation for the addition of Sieve
2865 extensions (by MH). In particular, the "personal" test is moved to a
2866 separate function, and given an option for scanning Cc: and Bcc: (which is
2867 not set for Exim filters).
2868
2869 6. When Exim created an email address using the login of the caller as the
2870 local part (e.g. when creating a From: or Sender: header line), it was not
2871 quoting the local part when it contained special characters such as @.
2872
2873 7. Installed new OpenBSD configuration files.
2874
2875 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2876 try to make them clearer.
2877
2878 9. Callout options, other than the timeout value, were being ignored when
2879 verifying sender addresses in header lines. For example, when using
2880
2881 verify = header_sender/callout=no_cache
2882
2883 the cache was (incorrectly) being used.
2884
288510. Added a missing instance of ${EXE} to the exim_install script; this affects
2886 only the Cygwin environment.
2887
288811. When return_path_on_delivery was set as a log selector, if different remote
2889 addresses in the same message used different return paths and parallel
2890 remote delivery occurred, the wrong values would sometimes be logged.
2891 (Whenever a remote delivery process finished, the return path value from
2892 the most recently started remote delivery process was logged.)
2893
289412. RFC 3848 specifies standard names for the "with" phrase in Received: header
2895 lines when AUTH and/or TLS are in use. This is the "received protocol"
2896 field. Exim used to use "asmtp" for authenticated SMTP, without any
2897 indication (in the protocol name) for TLS use. Now it follows the RFC and
2898 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2899 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2900 names appear in log lines as well as in Received: header lines.
2901
290213. Installed MH's patches for Sieve to add the "copy" and "vacation"
2903 extensions, and comparison tests, and to fix some bugs.
2904
290514. Changes to the "personal" filter test:
2906
2907 (1) The test was buggy in that it was just doing the equivalent of
2908 "contains" tests on header lines. For example, if a user's address was
2909 anne@some.where, the "personal" test would incorrectly be true for
2910
2911 To: susanne@some.where
2912
2913 This test is now done by extracting each address from the header in turn,
2914 and checking the entire address. Other tests that are part of "personal"
2915 are now done using regular expressions (for example, to check local parts
2916 of addresses in From: header lines).
2917
2918 (2) The list of non-personal local parts in From: addresses has been
2919 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2920 taken from the Sieve specification recommendations.
2921
2922 (3) If the message contains any header line starting with "List-" it is
2923 treated as non-personal.
2924
2925 (4) The test for "circular" in the Subject: header line has been removed
2926 because it now seems ill-conceived.
2927
292815. Minor typos in src/EDITME comments corrected.
2929
293016. Installed latest exipick from John Jetmore.
2931
293217. If headers_add on a router specified a text string that was too long for
2933 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2934 of string_sprintf() is now avoided.
2935
293618. $message_body_size was not set (it was always zero) when running the DATA
2937 ACL and the local_scan() function.
2938
293919. For the "mail" command in an Exim filter, no default was being set for
2940 the once_repeat time, causing a random time value to be used if "once" was
2941 specified. (If the value happened to be <= 0, no repeat happened.) The
2942 default is now 0s, meaning "never repeat". The "vacation" command was OK
2943 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2944 (I found it when inspecting the code).
2945
294620. There is now an overall timeout for performing a callout verification. It
2947 defaults to 4 times the callout timeout, which applies to individual SMTP
2948 commands during the callout. The overall timeout applies when there is more
2949 than one host that can be tried. The timeout is checked before trying the
2950 next host. This prevents very long delays if there are a large number of
2951 hosts and all are timing out (e.g. when the network connections are timing
2952 out). The value of the overall timeout can be changed by specifying an
2953 additional sub-option for "callout", called "maxwait". For example:
2954
2955 verify = sender/callout=5s,maxwait=20s
2956
295721. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2958 to the end before writing, but this should make it even safer).
2959
296022. Exim was forgetting that it had advertised PIPELINING for the second and
2961 subsequent messages on an SMTP connection. It was also not resetting its
2962 memory on STARTTLS and an internal HELO.
2963
296423. When Exim logs an SMTP synchronization error within a session, it now
2965 records whether PIPELINING has been advertised or not.
2966
296724. Added 3 instances of "(long int)" casts to time_t variables that were being
2968 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2969 rather than long int.
2970
297125. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2972
297326. Added the never_mail option to autoreply.
2974
2975
2976Exim version 4.41
2977-----------------
2978
2979 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2980 crash if the getsockname() call failed; this can happen if a connection is
2981 closed very soon after it is established. The problem was simply in the
2982 order in which certain operations were done, causing Exim to try to write
2983 to the SMTP stream before it had set up the file descriptor. The bug has
2984 been fixed by making things happen in the correct order.
2985
2986
2987Exim version 4.40
2988-----------------
2989
2990 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2991 before the connection was closed, thus losing the rejection response.
2992
2993 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2994 some early Solaris releases, but causes trouble in current releases where
2995 socklen_t is defined.
2996
2997 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2998 always exist.
2999
3000 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3001 configured.
3002
3003 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3004 that releasing the top of it at the end releases what was used for sub-
3005 expansions (unless the block got too big). However, discard this block if
3006 the first thing is a variable or header, so that we can use its block when
3007 it is dynamic (useful for very large $message_headers, for example).
3008
3009 6. Lookups now cache *every* query, not just the most recent. A new, separate
3010 store pool is used for this. It can be recovered when all lookup caches are
3011 flushed. Lookups now release memory at the end of their result strings.
3012 This has involved some general refactoring of the lookup sources.
3013
3014 7. Some code has been added to the store_xxx() functions to reduce the amount
3015 of flapping under certain conditions.
3016
3017 8. log_incoming_interface used to affect only the <= reception log lines. Now
3018 it causes the local interface and port to be added to several more SMTP log
3019 lines, for example "SMTP connection from", and rejection lines.
3020
3021 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3022
302310. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3024
302511. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3026 could be overwritten at the end of the current message (or the start of a
3027 new message if it was set in a HELO ACL). The value is now preserved for
3028 the duration of the SMTP connection.
3029
303012. If a transport had a headers_rewrite setting, and a matching header line
3031 contained an unqualified address, that address was qualified, even if it
3032 did not match any rewriting rules. The underlying bug was that the values
3033 of the flags that permit the existence of unqualified sender and recipient
3034 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3035 non-local messages, and by -bnq for local messages) were not being
3036 preserved with the message after it was received.
3037
303813. When Exim was logging an SMTP synchronization error, it could sometimes log
3039 "next input=" as part of the text comprising the host identity instead of
3040 the correct text. The code was using the same buffer for two different
3041 strings. However, depending on which order the printing function evaluated
3042 its arguments, the bug did not always show up. Under Linux, for example, my
3043 test suite worked just fine.
3044
304514. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3046 doesn't work with some older versions of Perl. It has been changed to "my",
3047 which in any case is probably the better facility to use.
3048
304915. A really picky compiler found some instances of statements for creating
3050 error messages that either had too many or two few arguments for the format
3051 string.
3052
305316. The size of the buffer for calls to the DNS resolver has been increased
3054 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3055 for addresses that have a lot of PTR records. This alleviates a problem; it
3056 does not fully solve it.
3057
305817. A dnsdb lookup for PTR records that receives more data than will fit in the
3059 buffer now truncates the list and logs the incident, which is the same
3060 action as happens when Exim is looking up a host name and its aliases.
3061 Previously in this situation something unpredictable would happen;
3062 sometimes it was "internal error: store_reset failed".
3063
306418. If a server dropped the connection unexpectedly when an Exim client was
3065 using GnuTLS and trying to read a response, the client delivery process
3066 crashed while trying to generate an error log message.
3067
306819. If a "warn" verb in an ACL added multiple headers to a message in a single
3069 string, for example:
3070
3071 warn message = H1: something\nH2: something
3072
3073 the text was added as a single header line from Exim's point of view
3074 though it ended up OK in the delivered message. However, searching for the
3075 second and subsequent header lines using $h_h2: did not work. This has been
3076 fixed. Similarly, if a system filter added multiple headers in this way,
3077 the routers could not see them.
3078
307920. Expanded the error message when iplsearch is called with an invalid key to
3080 suggest using net-iplsearch in a host list.
3081
308221. When running tests using -bh, any delays imposed by "delay" modifiers in
3083 ACLs are no longer actually imposed (and a message to that effect is
3084 output).
3085
308622. If a "gecos" field in a passwd entry contained escaped characters, in
3087 particular, if it contained a \" sequence, Exim got it wrong when building
3088 a From: or a Sender: header from that name. A second bug also caused
3089 incorrect handling when an unquoted " was present following a character
3090 that needed quoting.
3091
309223. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3093 was not being matched caselessly.
3094
309524. Arranged for all hyphens in the exim.8 source to be escaped with
3096 backslashes.
3097
309825. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3099 properly. Recipient callout cache records were still being keyed to include
3100 the sender, even when use_sender was set false. This led to far more
3101 callouts that were necessary. The sender is no longer included in the key
3102 when use_sender is false.
3103
310426. Added "control = submission" modifier to ACLs.
3105
310627. Added the ${base62d: operator to decode base 62 numbers.
3107
310828. dnsdb lookups can now access SRV records.
3109
311029. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3111 the configuration file.
3112
311330. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3114 (-v) mode. This makes the output for a verbose queue run more intelligible.
3115
311631. Added a use_postmaster feature to recipient callouts.
3117
311832. Added the $body_zerocount variable, containing the number of binary zero
3119 bytes in the message body.
3120
312133. The time of last modification of the "new" subdirectory is now used as the
3122 "mailbox time last read" when there is a quota error for a maildir
3123 delivery.
3124
312534. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3126
312735. Added +ignore_unknown as a special item in host lists.
3128
312936. Code for decoding IPv6 addresses in host lists is now included, even if
3130 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3131 address was recognized as an IP address, but was then not correctly decoded
3132 into binary, causing unexpected and incorrect effects when compared with
3133 another IP address.
3134
3135
3136Exim version 4.34
3137-----------------
3138
3139 1. Very minor rewording of debugging text in manualroute to say "list of
3140 hosts" instead of "hostlist".
3141
3142 2. If verify=header_syntax was set, and a header line with an unqualified
3143 address (no domain) and a large number of spaces between the end of the
3144 name and the colon was received, the reception process suffered a buffer
3145 overflow, and (when I tested it) crashed. This was caused by some obsolete
3146 code that should have been removed. The fix is to remove it!
3147
3148 3. When running in the test harness, delay a bit after writing a bounce
3149 message to get a bit more predictability in the log output.
3150
3151 4. Added a call to search_tidyup() just before forking a reception process. In
3152 theory, someone could use a lookup in the expansion of smtp_accept_max_
3153 per_host which, without the tidyup, could leave open a database connection.
3154
3155 5. Added the variables $recipient_data and $sender_data which get set from a
3156 lookup success in an ACL "recipients" or "senders" condition, or a router
3157 "senders" option, similar to $domain_data and $local_part_data.
3158
3159 6. Moved the writing of debug_print from before to after the "senders" test
3160 for routers.
3161
3162 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3163 problems for message scanning, either using a data ACL, or using
3164 local_scan() because the Received: header was not generated till after they
3165 were called (in order to set the time as the time of reception completion).
3166 I have revised the way this works. The header is now generated after the
3167 body is received, but before the ACL or local_scan() are called. After they
3168 are run, the timestamp in the header is updated.
3169
3170
3171Exim version 4.33
3172-----------------
3173
3174 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3175 before starting a queue runner without re-exec. This happened only when
3176 deliver_drop_privilege was set or when the Exim user was set to root. The
3177 effect of the bug was that timeouts during subsequent deliveries caused
3178 crashes instead of being properly handled. The handler is now left at its
3179 default (and expected) setting.
3180
3181 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3182 message, again when deliver_drop_privilege is set or Exim is run as root.
3183 The bug described in (1) was not present in this case, but the tidying up
3184 of the other signals was missing. I have made the two cases consistent.
3185
3186 3. The ignore_target_hosts setting on a manualroute router was being ignored
3187 for hosts that were looked up using the /MX notation.
3188
3189 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3190 in domain lists.
3191
3192 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3193 operated on the sender address. After changing the $sender_address to <>
3194 for the sender address verify, Exim was re-instated it as the original
3195 (before rewriting) address, but remembering that it had rewritten it, so it
3196 wasn't rewriting it again. This bug also had the effect of breaking the
3197 sender address verification caching when the sender address was rewritten.
3198
3199 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3200 This has been changed so that if the ip literal address matches
3201 ignore_target_hosts, the router declines.
3202
3203 7. Added expansion conditions match_domain, match_address, and match_local_
3204 part (NOT match_host).
3205
3206 8. The placeholder for the Received: header didn't have a length field set.
3207
3208 9. Added code to Exim itself and to exim_lock to test for a specific race
3209 condition that could lead to file corruption when using MBX delivery. The
3210 issue is with the lockfile that is created in /tmp. If this file is removed
3211 after a process has opened it but before that process has acquired a lock,
3212 there is the potential for a second process to recreate the file and also
3213 acquire a lock. This could lead to two Exim processes writing to the file
3214 at the same time. The added code performs the same test as UW imapd; it
3215 checks after acquiring the lock that its file descriptor still refers to
3216 the same named file.
3217
321810. The buffer for building added header lines was of fixed size, 8192 bytes.
3219 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3220 when Exim is built.
3221
322211. Added the smtp_active_hostname option. If used, this will typically be made
3223 to depend on the incoming interface address. Because $interface_address is
3224 not set up until the daemon has forked a reception process, error responses
3225 that can happen earlier (such as "too many connections") no longer contain
3226 a host name.
3227
322812. If an expansion in a condition on a "warn" statement fails because a lookup
3229 defers, the "warn" statement is abandoned, and the next ACL statement is
3230 processed. Previously this caused the whole ACL to be aborted.
3231
323213. Added the iplsearch lookup type.
3233
323414. Added ident_timeout as a log selector.
3235
323615. Added tls_certificate_verified as a log selector.
3237
323816. Added a global option tls_require_ciphers (compare the smtp transport
3239 option of the same name). This controls incoming TLS connections.
3240
324117. I finally figured out how to make tls_require_ciphers do a similar thing
3242 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3243 before starting the TLS session.
3244
324518. Tabs are now shown as \t in -bP output.
3246
324719. If the log selector return_path_on_delivery was set, Exim crashed when
3248 bouncing a message because it had too many Received: header lines.
3249
325020. If two routers both had headers_remove settings, and the first one included
3251 a superfluous trailing colon, the final name in the first list and the
3252 first name in the second list were incorrectly joined into one item (with a
3253 colon in the middle).
3254
3255
3256Exim version 4.32
3257-----------------
3258
3259 1. Added -C and -D options to the exinext utility, mainly to make it easier
3260 to include in the automated testing, but these could be helpful when
3261 multiple configurations are in use.
3262
3263 2. The exinext utility was not formatting the output nicely when there was
3264 an alternate port involved in the retry record key, nor when there was a
3265 message id as well (for retries that were specific to a specific message
3266 and a specific host). It was also confused by IPv6 addresses, because of
3267 the additional colons they contain. I have fixed the IPv4 problem, and
3268 patched it up to do a reasonable job for IPv6.
3269
3270 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3271 delivery, the log line now contains "pipelined" if PIPELINING was used.
3272
3273 4. An SMTP transport process used to panic and die if the bind() call to set
3274 an explicit outgoing interface failed. This has been changed; it is now
3275 treated in the same way as a connect() failure.
3276
3277 5. A reference to $sender_host_name in the part of a conditional expansion
3278 that was being skipped was still causing a DNS lookup. This no longer
3279 occurs.
3280
3281 6. The def: expansion condition was not recognizing references to header lines
3282 that used bh_ and bheader_.
3283
3284 7. Added the _cache feature to named lists.
3285
3286 8. The code for checking quota_filecount in the appendfile transport was
3287 allowing one more file than it should have been.
3288
3289 9. For compatibility with Sendmail, the command line option
3290
3291 -prval:sval
3292
3293 is equivalent to
3294
3295 -oMr rval -oMs sval
3296
3297 and sets the incoming protocol and host name (for trusted callers). The
3298 host name and its colon can be omitted when only the protocol is to be set.
3299 Note the Exim already has two private options, -pd and -ps, that refer to
3300 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3301 "s", but I don't think that's a major issue.
3302
330310. A number of refactoring changes to the code, none of which should affect
3304 Exim's behaviour:
3305
3306 (a) The number of logging options was getting close to filling up the
3307 32-bit word that was used as a bit map. I have split them into two classes:
3308 those that are passed in the argument to log_write(), and those that are
3309 only ever tested independently outside of that function. These are now in
3310 separate 32-bit words, so there is plenty of room for expansion again.
3311 There is no change in the user interface or the logging behaviour.
3312
3313 (b) When building, for example, log lines, the code previously used a
3314 macro that called string_cat() twice, in order to add two strings. This is
3315 not really sufficiently general. Furthermore, there was one instance where
3316 it was actually wrong because one of the argument was used twice, and in
3317 one call a function was used. (As it happened, calling the function twice
3318 did not affect the overall behaviour.) The macro has been replaced by a
3319 function that can join an arbitrary number of extra strings onto a growing
3320 string.
3321
3322 (c) The code for expansion conditions now uses a table and a binary chop
3323 instead of a serial search (which was left over from when there were very
3324 few conditions). Also, it now recognizes conditions like "pam" even when
3325 the relevant support is not compiled in: a suitably worded error message is
3326 given if an attempt is made to use such a condition.
3327
332811. Added ${time_interval:xxxxx}.
3329
333012. A bug was causing one of the ddress fields not to be passed back correctly
3331 from remote delivery subprocesses. The field in question was not being
3332 subsequently used, so this caused to problems in practice.
3333
333413. Added new log selectors queue_time and deliver_time.
3335
333614. Might have fixed a bug in maildirsizefile handling that threw up
3337 "unexpected character" debug warnings, and recalculated the data
3338 unnecessarily. In any case, I expanded the warning message to give more
3339 information.
3340
334115. Added the message "Restricted characters in address" to the statements in
3342 the default ACL that block characters like @ and % in local parts.
3343
334416. Change 71 for release 4.31 proved to be much less benign that I imagined.
3345 Three changes have been made:
3346
3347 (a) There was a serious bug; a negative response to MAIL caused the whole
3348 recipient domain to be cached as invalid, thereby blocking all messages
3349 to all local parts at the same domain, from all senders. This bug has
3350 been fixed. The domain is no longer cached after a negative response to
3351 MAIL if the sender used is not empty.
3352
3353 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3354 been restored.
3355
3356 (c) A new callout option, "use_sender" has been added for people who want
3357 the modified behaviour.
3358
3359
3360Exim version 4.31
3361-----------------
3362
3363 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3364 Larry Rosenman.
3365
3366 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3367 indeed breaks things for older releases.
3368
3369 3. Added additional logging to the case where there is a problem reading data
3370 from a filter that is running in a subprocess using a pipe, in order to
3371 try to track down a specific problem.
3372
3373 4. Testing facility fudge: when running in the test harness and attempting
3374 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3375 getting "No route to host". Convert this to a timeout.
3376
3377 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3378 warning.
3379
3380 6. Some OS don't have socklen_t but use size_t instead. This affects the
3381 fifth argument of getsockopt() amongst other things. This is now
3382 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3383 can be set for individual OS. I have set it for SunOS5, OSF1, and
3384 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3385 some earlier ones do not.
3386
3387 7. Change 4.30/15 was not doing the test caselessly.
3388
3389 8. The standard form for an IPv6 address literal was being rejected by address
3390 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3391 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3392 this, as well as the form without the "IPv6" on the front (but only when
3393 address literals are enabled, of course).
3394
3395 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3396
339710. Exim crashed if a message with an empty sender address specified by -f
3398 encountered a router with an errors_to setting. This could be provoked only
3399 by a command such as
3400
3401 exim -f "" ...
3402
3403 where an empty string was supplied; "<>" did not hit this bug.
3404
340511. Installed PCRE release 4.5.
3406
340712. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3408 remained set. It is now erased.
3409
341013. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3411 times from message ids (which are base 36 rather than the normal 62).
3412
341314. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3414 were being counted as actual protocol errors, and logged if the log
3415 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3416 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3417 and DATA following a set of rejected RCPTs do not count as protocol errors.
3418 In other words, Exim assumes they were pipelined, though this may not
3419 actually be the case. Of course, in all cases the client gets an
3420 appropriate error code.
3421
342215. If a lookup fails in an ACL condition, a message about the failure may
3423 be available; it is used if testing the ACL cannot continue, because most
3424 such messages specify what the cause of the deferral is. However, some
3425 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3426 that caused an old message to be retained and used if a later statement
3427 caused a defer, replacing the real cause of the deferral.
3428
342916. If an IP address had so many PTR records that the DNS lookup buffer
3430 was not large enough to hold them, Exim could crash while trying to process
3431 the truncated data. It now detects and logs this case.
3432
343317. Further to 4.21/58, another change has been made: if (and only if) the
3434 first line of a message (the first header line) ends with CRLF, a bare LF
3435 in a subsequent header line has a space inserted after it, so as not to
3436 terminate the header.
3437
343818. Refactoring: tidied an ugly bit of code in appendfile that copied data
3439 unnecessarily, used atoi() instead of strtol(), and didn't check the
3440 termination when getting file sizes from file names by regex.
3441
344219. Completely re-implemented the support for maildirsize files, in the light
3443 of a number of problems with the previous contributed implementation
3444 (4.30/29). In particular:
3445
3446 . If the quota is zero, the maildirsize file is maintained, but no quota is
3447 imposed.
3448
3449 . If the maildir directory does not exist, it is created before any attempt
3450 to write a maildirsize file.
3451
3452 . The quota value in the file is just a cache; if the quota is changed in
3453 the transport, the new value overrides.
3454
3455 . A regular expression is available for excluding directories from the
3456 count.
3457
345820. The autoreply transport checks the characters in options that define the
3459 message's headers; it allows continued headers, but it was checking with
3460 isspace() after an embedded newline instead of explicitly looking for a
3461 space or a tab.
3462
346321. If all the "regular" hosts to which an address was routed had passed their
3464 expiry times, and had not reached their retry times, the address was
3465 bounced, even if fallback hosts were defined. Now Exim should go on to try
3466 the fallback hosts.
3467
346822. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3469 equivalent code in the SMTP transport. Some hosts send humungous responses
3470 to HELO/EHLO, more than 1024 it seems.
3471
347223. Refactoring: code in filter.c used (void *) for "any old type" but this
3473 gives compiler warnings in some environments. I've now done it "properly",
3474 using a union.
3475
347624. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3477 (because of problems with the built-in one) was declared to return uschar *
3478 instead of char *, causing compiler failure.
3479
348025. Fixed a file descriptor leak when processing alias/forward files.
3481
348226. Fixed a minor format string issue in dbfn.c.
3483
348427. Typo in exim.c: ("dmbnz" for "dbmnz").
3485
348628. If a filter file refered to $h_xxx or $message_headers, and the headers
3487 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3488 become corrupted.
3489
349029. When a sender address is verified, it is cached, to save repeating the test
3491 when there is more than one recipient in a message. However, when the
3492 verification involves a callout, it is possible for different callout
3493 options to be set for different recipients. It is too complicated to keep
3494 track of this in the cache, so now Exim always runs a verification when a
3495 callout is required, relying on the callout cache for the optimization.
3496 The overhead is duplication of the address routing, but this should not be
3497 too great.
3498
349930. Fixed a bug in callout caching. If a RCPT command caused the sender address
3500 to be verified with callout=postmaster, and the main callout worked but the
3501 postmaster check failed, the verification correctly failed. However, if a
3502 subsequent RCPT command asked for sender verification *without* the
3503 postmaster check, incorrect caching caused this verification also to fail,
3504 incorrectly.
3505
350631. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3507 it was not caching the DNS options (qualify_single, search_parents) that
3508 were used when the lookup failed. A subsequent lookup with different
3509 options therefore always gave the same answer, though there were cases
3510 where it should not have. (Example: a "domains = !$mx_any" option on a
3511 dnslookup router: the "domains" option is always processed without any
3512 widening, but the router might have qualify_single set.) Now Exim uses the
3513 cached value only when the same options are set.
3514
351532. Added John Jetmore's "exipick" utility to the distribution.
3516
351733. GnuTLS: When an attempt to start a TLS session fails for any reason other
3518 than a timeout (e.g. a certificate is required, and is not provided), an
3519 Exim server now closes the connection immediately. Previously it waited for
3520 the client to close - but if the client is SSL, it seems that they each
3521 wait for each other, leading to a delay before one of them times out.
3522
352334: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3524 maintained 0.8.x compatibility because I don't think many are using it, and
3525 it is clearly obsolete.
3526
352735. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3528 transport.
3529
353036. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3531 client certificate was expired. A simple patch fixes this, though I don't
3532 understand the full logic of why the verify callback is called multiple
3533 times.
3534
353537. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3536 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3537 which causes problems with some clients (such as the Certicom SSL Plus
3538 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3539 disables the coutermeasure allowing Eudora to connect."
3540
354138. Exim was not checking that a write() to a log file succeeded. This could
3542 lead to Bad Things if a log got too big, in particular if it hit a file
3543 size limit. Exim now panics and dies if it cannot write to a log file, just
3544 as it does if it cannot open a log file.
3545
354639. Modified OS/Makefile-Linux so that it now contains
3547
3548 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3549
3550 The two -D definitions ensure that Exim is compiled with large file
3551 support, which makes it possible to handle log files that are bigger than
3552 2^31.
3553
355440. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3555 instance) a domain was checked against a named list that involved a lookup,
3556 causing $domain_data to be set, then another domain was checked against the
3557 same list, then the first domain was re-checked, the value of $domain_data
3558 after the final check could be wrong. In particular, if the second check
3559 failed, it could be set empty. This bug probably also applied to
3560 $localpart_data.
3561
356241. The strip_trailing_dot option was not being applied to the address given
3563 with the -f command-line option.
3564
356542. The code for reading a message's header from the spool was incrementing
3566 $received_count, but never initializing it. This meant that the value was
3567 incorrect (doubled) while delivering a message in the same process in which
3568 it was received. In the most common configuration of Exim, this never
3569 happens - a fresh exec is done - but it can happen when
3570 deliver_drop_privilege is set.
3571
357243. When Exim logs an SMTP s