Add +ignore_defer and +include_defer to host lists.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
d52120f2 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.518 2007/06/26 09:23:34 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
eb4c0de6
PH
6Exim version 4.68
7-----------------
8
9PH/01 Another patch from the Sieve maintainer.
10
6a3bceb1
PH
11PH/02 When an IPv6 address is converted to a string for single-key lookup
12 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
13 dots are used instead of colons so that keys in lsearch files need not
14 contain colons. This was done some time before quoting was made available
15 in lsearch files. However, iplsearch files do require colons in IPv6 keys
16 (notated using the quote facility) so as to distinguish them from IPv4
17 keys. This meant that lookups for IP addresses in host lists did not work
18 for iplsearch lookups.
19
20 This has been fixed by arranging for IPv6 addresses to be expressed with
21 colons if the lookup type is iplsearch. This is not incompatible, because
22 previously such lookups could never work.
23
24 The situation is now rather anomolous, since one *can* have colons in
25 ordinary lsearch keys. However, making the change in all cases is
26 incompatible and would probably break a number of configurations.
27
2e30fa9d
TK
28TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
29 version.
30
0806a9c5
MH
31MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
32 conversion specification without a maximum field width, thereby enabling
33 a rogue spamd server to cause a buffer overflow. While nobody in their
34 right mind would setup Exim to query an untrusted spamd server, an
35 attacker that gains access to a server running spamd could potentially
36 exploit this vulnerability to run arbitrary code as the Exim user.
37
ae276964
TK
38TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
39 $primary_hostname instead of what libspf2 thinks the hosts name is.
40
0f2cbd1b
MH
41MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
42 a directory entry by the name of the lookup key. Previously, if a
43 symlink pointed to a non-existing file or a file in a directory that
44 Exim lacked permissions to read, a lookup for a key matching that
45 symlink would fail. Now it is enough that a matching directory entry
46 exists, symlink or not. (Bugzilla 503.)
47
2b85bce7
PH
48PH/03 The body_linecount and body_zerocount variables are now exported in the
49 local_scan API.
50
93655c46
PH
51PH/04 Added the $dnslist_matched variable.
52
6c512171
PH
53PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
54 This means they are set thereafter only if the connection becomes
55 encrypted.
56
57PH/06 Added the client_condition to authenticators so that some can be skipped
58 by clients under certain conditions.
59
aa6dc513
PH
60PH/07 The error message for a badly-placed control=no_multiline_responses left
61 "_responses" off the end of the name.
62
a96603a0
PH
63PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
64
8f240103
PH
65PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
66 (without spaces) instead of just copying the configuration text.
67
68PH/10 Added the /noupdate option to the ratelimit ACL condition.
69
d677b2f2
PH
70PH/11 Added $max_received_linelength.
71
d52120f2
PH
72PH/12 Added +ignore_defer and +include_defer to host lists.
73
eb4c0de6 74
b4ed4da0
PH
75Exim version 4.67
76-----------------
77
22ad45c9
MH
78MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
79 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
80 Jan Srzednicki.
81
b4ed4da0
PH
82PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
83 issue a MAIL command.
84
431b7361
PH
85PH/02 In an ACL statement such as
86
87 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
88
89 if a client was not listed at all, or was listed with a value other than
90 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
91 the condition was not true (as it should be), so access was not denied.
92 The bug was that the ! inversion was incorrectly passed on to the second
93 item. This has been fixed.
94
95PH/03 Added additional dnslists conditions == and =& which are different from
96 = and & when the dns lookup returns more than one IP address.
97
83da1223
PH
98PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
99 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
100
54fc8428
PH
101PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
102 FSYNC, which compiles an option called disable_fsync that allows for
103 bypassing fsync(). The documentation is heavily laced with warnings.
104
34c5e8dd
SC
105SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
106
bbe15da8
PH
107PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
108 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
109 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
110 including adding "make clean"; (3) Added -fPIC when compiling the test
111 dynamically loaded module, to get rid of a warning.
112
0e8a9471
MH
113MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
114 message fails, move_frozen_messages = true and ignore_bounce_errors_after
115 = 0s. The bug is otherwise harmless.
116
f0872424
PH
117PH/07 There was a bug in the dovecot authenticator such that the value of
118 $auth1 could be overwritten, and so not correctly preserved, after a
119 successful authentication. This usually meant that the value preserved by
120 the server_setid option was incorrect.
121
b01dd148
PH
122PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
123
6bf342e1
PH
124PH/09 Installed PCRE release 7.0.
125
273f34d0
PH
126PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
127 run for batched SMTP input. It is now run at the start of every message
128 in the batch. While fixing this I discovered that the process information
129 (output by running exiwhat) was not always getting set for -bs and -bS
130 input. This is fixed, and it now also says "batched" for BSMTP.
131
cf8b11a5
PH
132PH/11 Added control=no_pipelining.
133
41c7c167
PH
134PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
135 patch, slightly modified), and move the expansion of helo_data till after
136 the connection is made in the smtp transport (so it can use these
137 values).
138
9c57cbc0
PH
139PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
140
f3f065bb
PH
141PH/14 Added log_selector = +pid.
142
047bdd8c
PH
143PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
144
0ce9abe6
PH
145PH/16 Add ${if forany and ${if forall.
146
0e22dfd1
PH
147PH/17 Added dsn_from option to vary the From: line in DSNs.
148
4c590bd1
PH
149PH/18 Flush SMTP output before performing a callout, unless control =
150 no_callout_flush is set.
151
09945f1e
PH
152PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
153 was true (the default) a successful delivery failed to delete the retry
154 item, thus causing premature timeout of the address. The bug is now
155 fixed.
156
c51b8e75
PH
157PH/20 Added hosts_avoid_pipelining to the smtp transport.
158
e28326d8
PH
159PH/21 Long custom messages for fakedefer and fakereject are now split up
160 into multiline reponses in the same way that messages for "deny" and
161 other ACL rejections are.
162
75b1493f
PH
163PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
164 with slight modification.
165
7c5214ec
PH
166PH/23 Applied sieve patches from the maintainer "tracking the latest notify
167 draft, changing the syntax and factoring some duplicate code".
168
4311097e
PH
169PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
170 for deliveries of the second and subsequent messages over the same SMTP
171 connection.
172
29f89cad
PH
173PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
174 ${reduce, with only minor "tidies".
175
5e687460
SC
176SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
177
c3611384
PH
178PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
179 expansion side effects.
180
5a11a7b4
PH
181PH/27 When a message times out after an over-quota error from an Exim-imposed
182 quota, the bounce message says "mailbox is full". This message was not
183 being given when it was a system quota that was exceeded. It now should
184 be the same.
185
0e20aff9
MH
186MH/03 Made $recipients available in local_scan(). local_scan() already has
187 better access to the recipient list through recipients_list[], but
188 $recipients can be useful in postmaster-provided expansion strings.
189
ca86f471
PH
190PH/28 The $smtp_command and $smtp_command_argument variables were not correct
191 in the case of a MAIL command with additional options following the
192 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
193 were accidentally chopped off.
194
a14e5636
PH
195PH/29 SMTP synchronization checks are implemented when a command is read -
196 there is a check that no more input is waiting when there shouldn't be
197 any. However, for some commands, a delay in an ACL can mean that it is
198 some time before the response is written. In this time, more input might
199 arrive, invalidly. So now there are extra checks after an ACL has run for
200 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
201 pipelining has not been advertised.
202
ec95d1a6
PH
203PH/30 MH's patch to allow iscntrl() characters to be list separators.
204
42855d71
PH
205PH/31 Unlike :fail:, a custom message specified with :defer: was not being
206 returned in the SMTP response when smtp_return_error_details was false.
207 This has been fixed.
208
57c2c631
PH
209PH/32 Change the Dovecot authenticator to use read() and write() on the socket
210 instead of the C I/O that was originally supplied, because problems were
211 reported on Solaris.
212
58c01c94
PH
213PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
214 Exim which did not show up earlier: it was assuming that a call to
215 SSL_CTX_set_info_callback() might give an error value. In fact, there is
216 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
217 was a macro that became an assignment, so it seemed to work. This has
218 changed to a proper function call with a void return, hence the compile
219 error. Exim's code has been fixed.
220
dee5a20a
PH
221PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
222 cpus.
223
d2ee6114
PH
224PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
225
b2d5182b
PH
226PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
227
79749a79
PH
228PH/37 If a message is not accepted after it has had an id assigned (e.g.
229 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
230 "Completed" line in the log. When some messages of this type were
231 selected by exigrep, they were listed as "not completed". Others were
232 picked up by some special patterns. I have improved the selection
233 criteria to be more general.
79749a79 234
c456d9bb
PH
235PH/38 The host_find_failed option in the manualroute router can now be set
236 to "ignore", to completely ignore a host whose IP address cannot be
237 found. If all hosts are ignored, the behaviour is controlled by the new
238 host_all_ignored option.
239
cd9868ec
PH
240PH/39 In a list of hosts for manualroute, if one item (either because of multi-
241 homing or because of multiple MX records with /mx) generated more than
242 one IP address, and the following item turned out to be the local host,
243 all the secondary addresses of the first item were incorrectly removed
244 from the list, along with the local host and any following hosts (which
245 is what is supposed to happen).
246
ebeaf996
PH
247PH/40 When Exim receives a message, it writes the login name, uid, and gid of
248 whoever called Exim into the -H file. In the case of the daemon it was
249 behaving confusingly. When first started, it used values for whoever
250 started the daemon, but after a SIGHUP it used the Exim user (because it
251 calls itself on a restart). I have changed the code so that it now always
252 uses the Exim user.
253
2679d413
PH
254PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
255 message are rejected with the same error (e.g. no authentication or bad
256 sender address), and a DATA command is nevertheless sent (as can happen
257 with PIPELINING or a stupid MUA), the error message that was given to the
258 RCPT commands is included in the rejection of the DATA command. This is
259 intended to be helpful for MUAs that show only the final error to their
260 users.
261
84024b72
PH
262PH/42 Another patch from the Sieve maintainer.
263
8005d38e
SC
264SC/02 Eximstats - Differentiate between permanent and temporary rejects.
265 Eximstats - Fixed some broken HTML links and added missing column headers
266 (Jez Hancock).
267 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
268 columns for Rejects, Temp Rejects, Ham, and Spam rows.
269
3298c6c6
SC
270SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
271
a43a27c5
PH
272PH/43 Yet another patch from the Sieve maintainer.
273
58eb016e 274PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
275 the response to the final '.' that terminates a message, but only in the
276 case where the client has not sent further data following the '.'
277 (unfortunately, this is allowed). However, in many cases there won't be
278 any further data because there won't be any more messages to send. A call
279 to select() can be used: if it shows that the input is "ready", there is
280 either input waiting, or the socket has been closed. An attempt to read
281 the next input character can distinguish the two cases. Previously, Exim
58eb016e 282 would have sent an OK response which the client would never have see.
563b63fa
PH
283 This could lead to message repetition. This fix should cure that, at
284 least in a lot of common cases.
58eb016e 285
b43a74ea
PH
286PH/45 Do not advertise STARTTLS in response to HELP unless it would be
287 advertised in response to EHLO.
288
b4ed4da0 289
5dd1517f
PH
290Exim version 4.66
291-----------------
292
293PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
294 fixed by 4.65/MH/01 (is this a record?) are fixed:
295
296 (i) An empty string was always treated as zero by the numeric comparison
297 operators. This behaviour has been restored.
298
299 (ii) It is documented that the numeric comparison operators always treat
300 their arguments as decimal numbers. This was broken in that numbers
301 starting with 0 were being interpreted as octal.
302
303 While fixing these problems I realized that there was another issue that
304 hadn't been noticed. Values of message_size_limit (both the global option
305 and the transport option) were treated as octal if they started with 0.
306 The documentation was vague. These values are now always treated as
307 decimal, and I will make that clear in the documentation.
308
309
93cfa765
TK
310Exim version 4.65
311-----------------
312
313TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
314 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
315 versions. (#438)
316
d6066548
MH
317MH/01 Don't check that the operands of numeric comparison operators are
318 integers when their expansion is in "skipping" mode (fixes bug
319 introduced by 4.64-PH/07).
320
4362ff0d
PH
321PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
322 child addresses, Exim now panics and dies. Previously, because the count
323 is held in a short int, deliveries were likely to be lost. As such a
324 large number of recipients for a single message is ridiculous
325 (performance will be very, very poor), I have chosen to impose a limit
326 rather than extend the field.
327
93cfa765 328
944e9e9c
TF
329Exim version 4.64
330-----------------
aa41d2de 331
21d74bd9
TK
332TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
333 leftover -K file (the existence of which was triggered by #402).
334 While we were at it, introduced process PID as part of the -K
335 filename. This should rule out race conditions when creating
336 these files.
337
338TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
339 processing considerably. Previous code took too long for large mails,
340 triggering a timeout which in turn triggers #401.
341
342TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
343 in the DK code in transports.c. sendfile() is not really portable,
344 hence the _LINUX specificness.
944e9e9c
TF
345
346TF/01 In the add_headers option to the mail command in an Exim filter,
347 there was a bug that Exim would claim a syntax error in any
348 header after the first one which had an odd number of characters
349 in the field name.
350
2b1c6e3a
PH
351PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
352 callout verification, Exim cached a "reject" for the entire domain. This
353 is correct for most verifications, but it is not correct for a recipient
354 verification with use_sender or use_postmaster set, because in that case
355 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
356 case of MAIL FROM:<> rejection from other early rejections (e.g.
357 rejection of HELO). When verifying a recipient using a non-null MAIL
358 address, the cache is ignored if it shows MAIL FROM:<> rejection.
359 Whatever the result of the callout, the value of the domain cache is
360 left unchanged (for any other kind of callout, getting as far as trying
361 RCPT means that the domain itself is ok).
362
1f872c80
PH
363PH/02 Tidied a number of unused variable and signed/unsigned warnings that
364 gcc 4.1.1 threw up.
365
366PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
367 manifest itself as EPIPE rather than ECONNECT. When tidying away a
368 session, the daemon ignores ECONNECT errors and logs others; it now
369 ignores EPIPE as well.
370
d203e649
PH
371PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
372 (quoted-printable decoding).
373
cc2ed8f7 374PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 375 later the small subsequent patch to fix an introduced bug.
f951fd57 376
ddfcd446
PH
377PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
378
d45b1de8
PH
379PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
380
381PH/08 An error is now given if message_size_limit is specified negative.
382
38a0a95f 383PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 384 to be given (somewhat) arbitrary names.
38a0a95f 385
a2405d83
JJ
386JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
387 in 4.64-PH/09.
388
389JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
390 miscellaneous code fixes
391
6ea85e9a
PH
392PH/10 Added the log_reject_target ACL modifier to specify where to log
393 rejections.
394
26da7e20
PH
395PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
396 hostname. This is wrong, because it relates to the incoming message (and
397 probably the interface on which it is arriving) and not to the outgoing
398 callout (which could be using a different interface). This has been
399 changed to use the value of the helo_data option from the smtp transport
400 instead - this is what is used when a message is actually being sent. If
401 there is no remote transport (possible with a router that sets up host
402 addresses), $smtp_active_hostname is used.
6ea85e9a 403
14aa5a05 404PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 405 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
406 (a) The code assumed that strncpy() returns a negative number on buffer
407 overflow, which isn't the case. Replaced with Exim's string_format()
408 function.
409 (b) There were several signed/unsigned issues. I just did the minimum
410 hacking in of casts. There is scope for a larger refactoring.
411 (c) The code used strcasecmp() which is not a standard C function.
412 Replaced with Exim's strcmpic() function.
413 (d) The code set only $1; it now sets $auth1 as well.
414 (e) A simple test gave the error "authentication client didn't specify
415 service in request". It would seem that Dovecot has changed its
416 interface. Fortunately there's a specification; I followed it and
417 changed what the client sends and it appears to be working now.
418
ff75a1f7
PH
419PH/13 Added $message_headers_raw to provide the headers without RFC 2047
420 decoding.
421
e6f6568e
PH
422PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
423 address A is aliased to B and C, where B exists and C does not. Without
424 -v the output is "A verified" because verification stops after a
425 successful redirection if more than one address is generated. However,
426 with -v the child addresses are also verified. Exim was outputting "A
427 failed to verify" and then showing the successful verification for C,
428 with its parentage. It now outputs "B failed to verify", showing B's
429 parentage before showing the successful verification of C.
430
d6f6e0dc
PH
431PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
432 look up a TXT record in a specific list after matching in a combined
433 list.
434
322050c2
PH
435PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
436 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
437 they consult the DNS. I had assumed they would set it the way they
438 wanted; and indeed my experiments on Linux seem to show that in some
439 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
440 To be on the safe side, however, I have now made the interface to
441 host_find_byname() similar to host_find_bydns(), with an argument
442 containing the DNS resolver options. The host_find_byname() function now
443 sets these options at its start, just as host_find_bydns() does. The smtp
444 transport options dns_qualify_single and dns_search_parents are passed to
445 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
446 of host_find_byname() use the default settings of RES_DEFNAMES
447 (qualify_single) but not RES_DNSRCH (search_parents).
448
08955dd3
PH
449PH/17 Applied (a modified version of) Nico Erfurth's patch to make
450 spool_read_header() do less string testing, by means of a preliminary
451 switch on the second character of optional "-foo" lines. (This is
452 overdue, caused by the large number of possibilities that now exist.
453 Originally there were few.) While I was there, I also converted the
454 str(n)cmp tests so they don't re-test the leading "-" and the first
455 character, in the hope this might squeeze out yet more improvement.
456
1eccaa59
PH
457PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
458 flag allowing group syntax was set by the header_syntax check but not
459 turned off, possible causing trouble later; (2) The flag was not being
460 set at all for the header_verify test, causing "group"-style headers to
461 be rejected. I have now set it in this case, and also caused header_
462 verify to ignore an empty address taken from a group. While doing this, I
463 came across some other cases where the code for allowing group syntax
464 while scanning a header line wasn't quite right (mostly, not resetting
465 the flag correctly in the right place). These bugs could have caused
466 trouble for malformed header lines. I hope it is now all correct.
467
602e59e5
PH
468PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
469 with the "reply" argument non-NULL. The code, however (which originally
470 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
471 but it didn't always do it. This confused somebody who was copying the
472 code for some other use. I have removed all the tests.
473
411ef850
PH
474PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
475 feature that was used to support insecure browsers during the U.S. crypto
476 embargo. It requires special client support, and Exim is probably the
477 only MTA that supported it -- and would never use it because real RSA is
478 always available. This code has been removed, because it had the bad
479 effect of slowing Exim down by computing (never used) parameters for the
480 RSA_EXPORT functionality.
481
7befa435
PH
482PH/21 On the advice of Timo Sirainen, added a check to the dovecot
483 authenticator to fail if there's a tab character in the incoming data
484 (there should never be unless someone is messing about, as it's supposed
485 to be base64-encoded). Also added, on Timo's advice, the "secured" option
486 if the connection is using TLS or if the remote IP is the same as the
487 local IP, and the "valid-client-cert option" if a client certificate has
488 been verified.
489
48da4259 490PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
491 authenticators. This can be used for authorization after authentication
492 succeeds. (In the case of plaintext, it servers for both authentication
493 and authorization.)
494
48da4259
PH
495PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
496 if any retry times were supplied.
497
d1d5595c
PH
498PH/24 Exim crashed if verify=helo was activated during an incoming -bs
499 connection, where there is no client IP address to check. In this
500 situation, the verify now always succeeds.
501
0ef732d9
PH
502PH/25 Applied John Jetmore's -Mset patch.
503
328895cc
PH
504PH/26 Added -bem to be like -Mset, but loading a message from a file.
505
fd700877
PH
506PH/27 In a string expansion for a processed (not raw) header when multiple
507 headers of the same name were present, leading whitespace was being
508 removed from all of them, but trailing whitespace was being removed only
509 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
510 before concatenation. Completely empty headers in a concatenation (as
511 before) are ignored.
fd700877 512
8dce1a6f
PH
513PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
514 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
515
17af4a17
PH
516PH/29 [Removed. This was a change that I later backed out, and forgot to
517 correct the ChangeLog entry (that I had efficiently created) before
518 committing the later change.]
f6c332bd
PH
519
520PH/30 Exim was sometimes attempting to deliver messages that had suffered
521 address errors (4xx response to RCPT) over the same connection as other
522 messages routed to the same hosts. Such deliveries are always "forced",
523 so retry times are not inspected. This resulted in far too many retries
524 for the affected addresses. The effect occurred only when there were more
525 hosts than the hosts_max_try setting in the smtp transport when it had
526 the 4xx errors. Those hosts that it had tried were not added to the list
527 of hosts for which the message was waiting, so if all were tried, there
528 was no problem. Two fixes have been applied:
529
530 (i) If there are any address or message errors in an SMTP delivery, none
531 of the hosts (tried or untried) are now added to the list of hosts
532 for which the message is waiting, so the message should not be a
533 candidate for sending over the same connection that was used for a
534 successful delivery of some other message. This seems entirely
535 reasonable: after all the message is NOT "waiting for some host".
536 This is so "obvious" that I'm not sure why it wasn't done
537 previously. Hope I haven't missed anything, but it can't do any
538 harm, as the worst effect is to miss an optimization.
539
540 (ii) If, despite (i), such a delivery is accidentally attempted, the
541 routing retry time is respected, so at least it doesn't keep
542 hammering the server.
543
c1114884
PH
544PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
545 in ${readsocket because some servers need this prod.
546
7a0743eb
PH
547PH/32 Added some extra debug output when updating a wait-xxx database.
548
0d85fa3f
PH
549PH/33 The hint "could be header name not terminated by colon", which has been
550 given for certain expansion errors for a long time, was not being given
551 for the ${if def:h_colon_omitted{... case.
552
1bf43b78
PH
553PH/34 The spec says: "With one important exception, whenever a domain list is
554 being scanned, $domain contains the subject domain." There was at least
555 one case where this was not true.
556
520de300
PH
557PH/35 The error "getsockname() failed: connection reset by peer" was being
558 written to the panic log as well as the main log, but it isn't really
559 panic-worthy as it just means the connection died rather early on. I have
560 removed the panic log writing for the ECONNRESET error when getsockname()
561 fails.
562
48c7f9e2
PH
563PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
564 runs only) independently of the message's sender address. This meant
565 that, if the 4xx error was in fact related to the sender, a different
566 message to the same recipient with a different sender could confuse
567 things. In particualar, this can happen when sending to a greylisting
568 server, but other circumstances could also provoke similar problems.
569 I have changed the default so that the retry time for these errors is now
570 based a combination of the sender and recipient addresses. This change
571 can be overridden by setting address_retry_include_sender=false in the
572 smtp transport.
573
99ea1c86
PH
574PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
575 remote server are returned as part of bounce messages. This was not
576 happening for LMTP over a pipe (the lmtp transport), but now it is the
577 same for both kinds of LMTP.
578
a2042e78
PH
579PH/38 Despite being documented as not happening, Exim was rewriting addresses
580 in header lines that were in fact CNAMEs. This is no longer the case.
581
4fbcfc2e
PH
582PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
583 and queue runs started by the daemon processed all messages. This has
584 been fixed so that -R and -S can now usefully be given with -q<time>.
585
aa41d2de
PH
586PH/40 Import PCRE release 6.7 (fixes some bugs).
587
af561417
PH
588PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
589
3cc66b45
PH
590PH/42 Give an error if -q is specified more than once.
591
194cc0e4
PH
592PH/43 Renamed the variables $interface_address and $interface_port as
593 $received_ip_address and $received_port, to make it clear that these
594 values apply to message reception, and not to the outgoing interface when
595 a message is delivered. (The old names remain recognized, of course.)
596
a401ddaa
PH
597PH/44 There was no timeout on the connect() call when using a Unix domain
598 socket in the ${readsocket expansion. There now is.
599
4e88a19f
PH
600PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
601 be meaningful with "accept".
602
d7d7b289
SC
603SC/01 Eximstats V1.43
604 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
605
606SC/02 Eximstats V1.44
607 Use a glob alias rather than an array ref in the generated
608 parser. This improves both readability and performance.
609
610SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
611 Collect SpamAssassin and rejection statistics.
612 Don't display local sender or destination tables unless
613 there is data to show.
614 Added average volumes into the top table text output.
615
616SC/04 Eximstats V1.46
617 Collect data on the number of addresses (recipients)
618 as well as the number of messages.
619
620SC/05 Eximstats V1.47
621 Added 'Message too big' to the list of mail rejection
622 reasons (thanks to Marco Gaiarin).
623
624SC/06 Eximstats V1.48
625 Mainlog lines which have GMT offsets and are too short to
626 have a flag are now skipped.
627
628SC/07 Eximstats V1.49 (Alain Williams)
629 Added the -emptyok flag.
630
631SC/08 Eximstats V1.50
632 Fixes for obtaining the IP address from reject messages.
633
0ea2a468
JJ
634JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
635 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
636 whitesspace changes from 4.64-PH/27
637
638JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
639 match 4.64-PH/13
640
641JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
642 are found, allow negative numbers in numeric criteria)
643
644JJ/06 exipick.20061117.2, added new $message_body_missing variable
645
646JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
647 to match changes made in 4.64-PH/43
648
8a10f5a4
PH
649PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
650
30e18802
PH
651PH/47 Put in an explicit test for a DNS lookup of an address record where the
652 "domain" is actually an IP address, and force a failure. This locks out
653 those revolvers/nameservers that support "A-for-A" lookups, in
654 contravention of the specifications.
655
55728a4f
PH
656PH/48 When a host name was looked up from an IP address, and the subsequent
657 forward lookup of the name timed out, the host name was left in
658 $sender_host_name, contrary to the specification.
d7d7b289 659
d7837193
PH
660PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
661 restricted to single-key lookups, Exim was not diagnosing an error if
662 * or *@ was used with a query-style lookup.
663
87054a31
PH
664PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
665
ea2c01d2
MH
666MH/01 local_scan ABI version incremented to 1.1. It should have been updated
667 long ago, but noone interested enough thought of it. Let's just say that
668 the "1.1" means that there are some new functions that weren't there at
669 some point in the past.
670
e4fa6968
PH
671PH/51 Error processing for expansion failure of helo_data from an smtp
672 transport during callout processing was broken.
673
56f5d9bd
PH
674PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
675 tested/used via the -bh/-bhc/-bs options.
676
922e1c28
PH
677PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
678 bug, fixed in subsequent PCRE releases).
679
21eb6e72
PH
680PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
681 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
682
a0540757
PH
683PH/55 Check for a ridiculously long file name in exim_dbmbuild.
684
944e9e9c 685
478be7b0
SC
686Exim version 4.63
687-----------------
688
689SC/01 Use a glob alias rather than an array ref in eximstats generated
690 parser. This improves both readability and performance.
691
692SC/02 Collect SpamAssassin and rejection statistics in eximstats.
693 Don't display local sender or destination tables in eximstats unless
694 there is data to show.
695 Added average volumes into the eximstats top table text output.
696
697SC/03 Collect data on the number of addresses (recipients) as well
698 as the number of messages in eximstats.
699
2b965a65
TF
700TF/01 Correct an error in the documentation for the redirect router. Exim
701 does (usually) call initgroups() when daemonizing.
478be7b0 702
45b91596
PH
703TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
704 with consistent privilege compared to when running as a daemon.
478be7b0 705
c59f5781
TF
706TF/03 Note in the spec that $authenticated_id is not set for local
707 submissions from trusted users.
708
90fc3069
TF
709TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
710 Thanks to Dean Brooks <dean@iglou.com> for the patch.
711
6083aca0
TF
712TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
713 by adding some example configuration directives to the default
714 configuration file. A little bit of work is required to uncomment the
715 directives and define how usernames and passwords are checked, but
716 there is now a framework to start from.
717
765b530f
PH
718PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
719 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
720 without this. I don't know how relevant this is to other LDAP libraries.
721
4e167a8c
PH
722PH/02 Add the verb name to the "unknown ACL verb" error.
723
4608d683
PH
724PH/03 Magnus Holmgren's patch for filter_prepend_home.
725
b8dc3e4a
PH
726PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
727
5418e93b
PH
728PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
729 directory not expanded when it should be if an expanded home directory
730 was set for the address (which is overridden by the transport).
731
b4a9bda2
PH
732PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
733 libradius.
734
45b91596
PH
735PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
736 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
737 because it is too late at that time, and has no effect.
738
5547e2c5
PH
739PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
740 security issue with \' (bugzilla #107). I could not use the
741 PQescapeStringConn() function, because it needs a PGconn value as one of
742 its arguments.
743
dbcef0ea
PH
744PH/08 When testing addresses using -bt, indicate those final addresses that
745 are duplicates that would not cause an additional delivery. At least one
746 person was confused, thinking that -bt output corresponded to deliveries.
747 (Suppressing duplicates isn't a good idea as you lose the information
748 about possibly different redirections that led to the duplicates.)
749
25257489
PH
750PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
751 systems where poll() doesn't work, in particular OS X.
752
c816d124
PH
753PH/10 Added more information to debugging output for retry time not reached.
754
a9ccd69a
PH
755PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
756 operations in malware.c.
757
75fa1910
PH
758PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
759 signatures.
760
a7d7aa58
PH
761PH/13 If write_rejectlog was set false when logging was sent to syslog with
762 syslog_duplication set false, log lines that would normally be written
763 both the the main log and to the reject log were not written to syslog at
764 all.
765
42119b09
PH
766PH/14 In the default configuration, change the use of "message" in ACL warn
767 statements to "add_header".
768
41609df5
PH
769PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
770 not followed by a command (e.g. "seen endif").
771
a5bd321b
PH
772PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
773 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
774 latter.
775
e85a7ad5 776PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
777 so that it is now:
778
e85a7ad5
PH
779 ${if or { \
780 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
781 { match{$h_precedence:}{(?i)bulk|list|junk} } \
782 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
783 }{no}{yes}}
784
e85a7ad5
PH
785 The Auto-Submitted: and various List- headers are standardised, whereas I
786 don't think Precedence: ever was.
5dff5817 787
d8fe1c03
PH
788PH/18 Refactored debugging code in route_finduser() to show more information,
789 in particular, the error code if getpwnam() issues one.
790
16282d2b
PH
791PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
792 This is apparently needed in addition to the PH/07 change above to avoid
793 any possible encoding problems.
794
35d40a98
PH
795PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
796 but not after initializing Perl.
797
034d99ab
PH
798PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
799 output them only if debugging. By default they are written stderr,
800 apparently, which is not desirable.
801
6ec97b1b
PH
802PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
803 queries.
804
e22ca4ac
JJ
805JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
806 --not options
807
808JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
809
33d73e3b
PH
810PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
811 authenticated or an ident call has been made. Suppress the default
812 values for $authenticated_id and $authenticated_sender (but permit -oMai
813 and -oMas) when testing with -bh.
814
9ecb03f3
PH
815PH/24 Re-jigged the order of the tests in the default configuration so that the
816 tests for valid domains and recipients precede the DNS black list and CSA
817 tests, on the grounds that those ones are more expensive.
818
084efe8d
PH
819PH/25 Exim was not testing for a space following SMTP commands such as EHLO
820 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
821 This bug exists in every version of Exim that I still have, right back to
822 0.12.
823
366fc9f0
PH
824PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
825 However, an attempt to turn on case-sensitivity in a regex key by
826 including (?-i) didn't work because the subject string was already
827 lowercased, and the effects were non-intuitive. It turns out that a
828 one-line patch can be used to allow (?-i) to work as expected.
829
c59f5781 830
c887c79e
TF
831Exim version 4.62
832-----------------
833
834TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
835 other effects) broke the use of negated acl sub-conditions.
836
1cce3af8
PH
837PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
838 patch).
839
afb3eaaf
PH
840PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
841 "Deny" causes Exim to reject the incoming connection with a 554 error.
842 Unfortunately, if there is a major crisis, such as a disk failure,
843 tcp-wrappers gives "deny", whereas what one would like would be some
844 kind of temporary error. A kludge has been added to help with this.
845 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
846 554 error is used if errno is still zero or contains ENOENT (which occurs
847 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
848 451 error is used.
849
e173618b
PH
850PH/03 Add -lutil to the default FreeBSD LIBS setting.
851
dd16e114
PH
852PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
853 errors. Otherwise a message that provokes a temporary error (when other
854 messages do not) can cause a whole host to time out.
855
f7fd3850
PH
856PH/05 Batch deliveries by appendfile and pipe transports did not work when the
857 addresses were routed directly to files or pipes from a redirect router.
858 File deliveries just didn't batch; pipe deliveries might have suffered
859 odd errors.
860
d87df92c
PH
861PH/06 A failure to get a lock for a hints database would erroneously always say
862 "Failed to get write lock", even when it was really a read lock.
863
7e9f683d
PH
864PH/07 The appendfile transport was creating MBX lock files with a fixed mode
865 of 0600. This has been changed to use the value of the lockfile_mode
866 option (which defaults to 0600).
867
bfad5236
PH
868PH/08 Applied small patch from the Sieve maintainer.
869
01c490df
PH
870PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
871 folder from quota calculations, a direct delivery into this folder messed
872 up the contents of the maildirsize file. This was because the regex was
873 used only to exclude .Trash (or whatever) when the size of the mailbox
874 was calculated. There was no check that a delivery was happening into an
875 excluded directory. This bug has been fixed by ignoring all quota
876 processing for deliveries into excluded directories.
877
d6629cdc
PH
878PH/10 Added the maildirfolder_create_regex option to appendfile.
879
1cce3af8 880
214e2000
PH
881Exim version 4.61
882-----------------
883
884PH/01 The code for finding all the local interface addresses on a FreeBSD
885 system running IPv6 was broken. This may well have applied to all BSD
886 systems, as well as to others that have similar system calls. The broken
887 code found IPv4 interfaces correctly, but gave incorrect values for the
888 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
889 that it would not match correctly against @[] and not recognize the IPv6
890 addresses as local.
891
f9daeae0
PH
892PH/02 The ipliteral router was not recognizing addresses of the form user@
893 [ipv6:....] because it didn't know about the "ipv6:" prefix.
894
7e66e54d
PH
895PH/03 Added disable_ipv6.
896
c8ea1597
PH
897PH/04 Changed $reply_address to use the raw form of the headers instead of the
898 decoded form, because it is most often used to construct To: headers
899 lines in autoreplies, and the decoded form may well be syntactically
900 invalid. However, $reply_address has leading white space removed, and all
901 newlines turned into spaces so that the autoreply transport does not
902 grumble.
903
911f6fde
PH
904PH/05 If group was specified without a user on a router, and no group or user
905 was specified on a transport, the group from the router was ignored.
906
47ca6d6c
PH
907PH/06 Increased the number of ACL variables to 20 of each type, and arranged
908 for visible compile-time settings that can be used to change these
909 numbers, for those that want even more. Backwards compatibility with old
910 spool files has been maintained. However, going back to a previous Exim
911 release will lost any variables that are in spool files.
912
ed0e9820
PH
913PH/07 Two small changes when running in the test harness: increase delay when
914 passing a TCP/IP connection to a new process, in case the original
915 process has to generate a bounce, and remove special handling of
916 127.0.0.2 (sic), which is no longer necessary.
917
eff37e47
PH
918PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
919 be the same on different OS.
920
1921d2ea
PH
921PH/09 Moved a debug statement in filter processing to avoid a race problem when
922 testing.
923
b3f69ca8
JJ
924JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
925 whether --show-vars was specified or not
926
927JJ/02 exipick: Added support for new ACL variable spool format introduced
928 in 4.61-PH/06
929
424a1c63
PH
930PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
931 syntactically invalid From: or Reply-to: line, and a filter used this to
932 generate an autoreply, and therefore failed to obtain an address for the
933 autoreply, Exim could try to deliver to a non-existent relative file
934 name, causing unrelated and misleading errors. What now happens is that
935 it logs this as a hard delivery error, but does not attempt to create a
936 bounce message.
937
7a100415
PH
938PH/11 The exinext utility has a -C option for testing purposes, but although
939 the given file was scanned by exinext itself; it wasn't being passed on
940 when Exim was called.
941
19b9dc85
PH
942PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
943 an end-of-file indication when reading a command response.
944
309bd837
PH
945PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
946 compiled. In many other places in Exim, IPv6 addresses are always
947 recognized, so I have changed this. It also means that IPv4 domain
948 literals of the form [IPV4:n.n.n.n] are now always recognized.
949
59e82a2a
PH
950PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
951 used if the router is not running as root, for example, when verifying at
952 ACL time, or when using -bh. The debugging output from this situation was
953 non-existent - all you got was a failure to exec. I have made two
954 changes:
955
956 (a) Failures to set uid/gid, the current directory, or a process leader
957 in a subprocess such as that created by queryprogram now generate
958 suitable debugging ouput when -d is set.
959
960 (b) The queryprogram router detects when it is not running as root,
961 outputs suitable debugging information if -d is set, and then runs
962 the subprocess without attempting to change uid/gid.
963
9edc04ce
PH
964PH/15 Minor change to Makefile for building test_host (undocumented testing
965 feature).
966
1349e1e5
PH
967PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
968 additional section of a DNS packet that returns MX or SRV records.
969 Instead, it always explicitly searches for A/AAAA records. This avoids
970 major problems that occur when a DNS server includes only records of one
971 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
972 fixed another bug: if SRV records were looked up and the corresponding
973 address records were *not* found in the additional section, the port
974 values from the SRV records were lost.
975
ea49d0e1
PH
976PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
977 using the correct key (the original address) when searching the retry
978 rules in order to find which one to use for generating the retry hint.
979
064a94c9
PH
980PH/18 If quota_warn_message contains a From: header, Exim now refrains from
981 adding the default one. Similarly, if it contains a Reply-To: header, the
982 errors_reply_to option, if set, is not used.
983
727071f8
PH
984PH/19 When calculating a retry time, Exim used to measure the "time since
985 failure" by looking at the "first failed" field in the retry record. Now
986 it does not use this if it is later than than the arrival time of the
987 message. Instead it uses the arrival time. This makes for better
988 behaviour in cases where some deliveries succeed, thus re-setting the
989 "first failed" field. An example is a quota failure for a huge message
990 when small messages continue to be delivered. Without this change, the
991 "time since failure" will always be short, possible causing more frequent
992 delivery attempts for the huge message than are intended.
dd16e114 993 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 994
f78eb7c6
PH
995PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
996 $1, $2, $3) because the numerical variables can be reset during some
997 expansion items (e.g. "match"), thereby losing the authentication data.
998
21c28500
PH
999PH/21 Make -bV show the size of off_t variables so that the test suite can
1000 decide whether to run tests for quotas > 2G.
1001
1002PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1003 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1004 filecount value is greater than 2G or if a quota value is greater than 2G
1005 on a system where the size of off_t is not greater than 4, a panic error
1006 is given.
1007
1688f43b
PH
1008PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1009 never match. The debug and -bh output now contains an explicit error
1010 message indicating a malformed IPv4 address or mask.
1011
1012PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1013 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1014 PH/23 above applies.
1015
9675b384
PH
1016PH/25 Do not write to syslog when running in the test harness. The only
1017 occasion when this arises is a failure to open the main or panic logs
1018 (for which there is an explicit test).
1019
6a3f1455
PH
1020PH/26 Added the /no_tell option to "control=freeze".
1021
dac79d3e
PH
1022PH/27 If a host name lookup failed very early in a connection, for example, if
1023 the IP address matched host_lookup and the reverse lookup yielded a name
1024 that did not have a forward lookup, an error message of the form "no IP
1025 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1026 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1027
5977a0b3
PH
1028PH/28 An enabling patch from MH: add new function child_open_exim2() which
1029 allows the sender and the authenticated sender to be set when
1030 submitting a message from within Exim. Since child_open_exim() is
1031 documented for local_scan(), the new function should be too.
1032
c91535f3
PH
1033PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1034 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1035 results in an empty string is now treated as unset.
1036
0d46a8c8
PH
1037PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1038
278c6e6c
PH
1039PH/31 Added sender_verify_fail logging option.
1040
2cbb4081
PH
1041PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1042 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1043 tidied the source and removed it altogether.
1044
3eef829e
PH
1045PH/33 When a queue run was abandoned because the load average was too high, a
1046 log line was always written; now it is written only if the queue_run log
1047 selector is set. In addition, the log line for abandonment now contains
1048 information about the queue run such as the pid. This is always present
1049 in "start" and "stop" lines but was omitted from the "abandon" line.
1050
1ab95fa6
PH
1051PH/34 Omit spaces between a header name and the colon in the error message that
1052 is given when verify = headers_syntax fails (if there are lots of them,
1053 the message gets confusing).
1054
230205fc
PH
1055PH/35 Change the default for dns_check_names_pattern to allow slashes within
1056 names, as there are now some PTR records that contain slashes. This check
1057 is only to protect against broken name servers that fall over on strange
1058 characters, so the fact that it applies to all lookups doesn't matter.
1059
75e0e026
PH
1060PH/36 Now that the new test suite is complete, we can remove some of the
1061 special code in Exim that was needed for the old test suite. For example,
1062 sorting DNS records because real resolvers return them in an arbitrary
1063 order. The new test suite's fake resolver always returns records in the
1064 same order.
1065
1066PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1067 bounces) except when queue_only is set, to avoid logging races between
1068 the different processes.
1069
145396a6
PH
1070PH/38 Panic-die if .include specifies a non-absolute path.
1071
3cd34f13
PH
1072PH/39 A tweak to the "H" retry rule from its user.
1073
11121d3d
JJ
1074JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1075 a label. They prevented compilation on older perls.
1076
1077JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1078 a warning to be raised on newish perls.
1079
1080JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1081 on queue. Changes to match documented behaviour of showing count of
1082 messages matching specified criteria.
1083
8def5aaf
PH
1084PH/40 Changed the default ident timeout from 30s to 5s.
1085
929ba01c
PH
1086PH/41 Added support for the use of login_cap features, on those BSD systems
1087 that have them, for controlling the resources used by pipe deliveries.
1088
2632889e
PH
1089PH/42 The content-scanning code uses fopen() to create files in which to put
1090 message data. Previously it was not paying any attention to the mode of
1091 the files. Exim runs with umask(0) because the rest of the code creates
1092 files with open(), and sets the required mode explicitly. Thus, these
1093 files were ending up world-writeable. This was not a big issue, because,
1094 being within the spool directory, they were not world-accessible. I have
1095 created a function called modefopen, which takes an additional mode
1096 argument. It sets umask(777), creates the file, chmods it to the required
1097 mode, then resets the umask. All the relevant calls to fopen() in the
1098 content scanning code have been changed to use this function.
1099
944a9c55
PH
1100PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1101 to 24 hours. This avoids potential overflow problems when processing G
1102 and H retry rules. I suspect nobody ever tinkers with this value.
1103
4a23603b
PH
1104PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1105
4730f942
PH
1106PH/45 When the plaintext authenticator is running as a client, the server's
1107 challenges are checked to ensure they are valid base64 strings. By
1108 default, the authentication attempt is cancelled if an invalid string is
1109 received. Setting client_ignore_invalid_base64 true ignores these errors.
1110 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1111 they are received. Thus, the responses can be made to depend on the
1112 challenges. If an invalid string is ignored, an empty string is placed in
1113 the variable.
1114
30dba1e6
PH
1115PH/46 Messages that are created by the autoreply transport now contains a
1116 References: header, in accordance with RFCs 2822 and 3834.
1117
382afc6b
PH
1118PH/47 Added authenticated_sender_force to the smtp transport.
1119
a86229cf
PH
1120PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1121
50c99ba6
PH
1122PH/49 Installed latest patch from the Sieve maintainer.
1123
d35e429d
PH
1124PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1125 was also set, the appendfile transport was unnecessarily scanning a
1126 directory of message files (e.g. for maildir delivery) to find the count
1127 of files (along with the size), even though it did not need this
1128 information. It now does the scan only if it needs to find either the
1129 size of the count of files.
1130
f90d018c
PH
1131PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1132
75def545
PH
1133PH/52 Two bugs concerned with error handling when the smtp transport is
1134 used in LMTP mode:
1135
1136 (i) Exim was not creating retry information for temporary errors given
1137 for individual recipients after the DATA command when the smtp transport
1138 was used in LMTP mode. This meant that they could be retried too
1139 frequently, and not timed out correctly.
1140
1141 (ii) Exim was setting the flag that allows error details to be returned
1142 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1143 recipients that were returned after the DATA command.
1144
1145PH/53 This is related to PH/52, but is more general: for any failing address,
1146 when detailed error information was permitted to be returned to the
1147 sender, but the error was temporary, then after the final timeout, only
1148 "retry timeout exceeded" was returned. Now it returns the full error as
1149 well as "retry timeout exceeded".
1150
c46782ef
PH
1151PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1152 do this, and (what is worse) MTAs that accept it.
1153
71fafd95
PH
1154PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1155 will now be deprecated.
1156
2c5db4fd
PH
1157PH/56 New os.c-cygwin from the Cygwin maintainer.
1158
9cf6b11a
JJ
1159JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1160 formats (previously only available in exim formats via -bpr, -bpru,
1161 and -bpra. Now also available in native and exiqgrep formats)
1162
1163JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1164 with very large, slow to parse queues
1165
1166JJ/08 exipick: added ! as generic prefix to negate any criteria format
1167
1168JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1169
898d150f
PH
1170PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1171 responses to authentication challenges, though it was showing the
1172 challenges; (ii) I've removed the CR characters from the debug output for
1173 SMTP output lines.
1174
46218253
PH
1175PH/58 Allow for the insertion of a newline as well as a space when a string
1176 is turned into more than one encoded-word during RFC 2047 encoding. The
1177 Sieve code now uses this.
1178
e97957bc
PH
1179PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1180 data_4xx, lost_connection, tls_required.
1181
81e509d7
PH
1182PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1183 message was being sent as an SMTP response.
1184
3d240ff7
PH
1185PH/61 Add -l and -k options to exicyclog.
1186
b37c4101
PH
1187PH/62 When verifying, if an address was redirected to one new address, so that
1188 verification continued, and the new address failed or deferred after
1189 having set something in $address_data, the value of $address_data was not
1190 passed back to the ACL. This was different to the case when no
1191 redirection occurred. The value is now passed back in both cases.
1192
79378e0f
PH
1193PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1194 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1195 use login_cap.h, so on its own it isn't the distinguishing feature. The
1196 new name refers directly to the setclassresources() function.
1197
e49c7bb4
PH
1198PH/65 Added configuration files for NetBSD3.
1199
d114ec46
PH
1200PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1201
f3d7df6c
PH
1202PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1203 is preferred over IPv4.
1204
715ab376
PH
1205PH/68 The bounce_return_message and bounce_return_body options were not being
1206 honoured for bounces generated during the reception of non-SMTP messages.
1207 In particular, this applied to messages rejected by the ACL. This bug has
1208 been fixed. However, if bounce_return_message is true and bounce_return_
1209 body is false, the headers that are returned for a non-SMTP message
1210 include only those that have been read before the error was detected.
1211 (In the case of an ACL rejection, they have all been read.)
1212
6b31b150
PH
1213PH/69 The HTML version of the specification is now built in a directory called
1214 spec_html instead of spec.html, because the latter looks like a path with
1215 a MIME-type, and this confuses some software.
1216
1217PH/70 Catch two compiler warnings in sieve.c.
1218
d515a917
PH
1219PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1220 function verify_get_ident() calls ip_connect() to connect a socket, but
1221 if the "connect()" function timed out, ip_connect() used to close the
1222 socket. However, verify_get_ident() also closes the socket later, and in
1223 between Exim writes to the log, which may get opened at this point. When
1224 the socket was closed in ip_connect(), the log could get the same file
1225 descriptor number as the socket. This naturally causes chaos. The fix is
1226 not to close the socket in ip_connect(); the socket should be closed by
1227 the function that creates it. There was only one place in the code where
1228 this was missing, in the iplookup router, which I don't think anybody now
1229 uses, but I've fixed it anyway.
1230
9b8fadde
PH
1231PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1232 well as to direct DNS lookups. Otherwise the handling of names in host
1233 lists is inconsistent and therefore confusing.
1234
214e2000 1235
5de37277
PH
1236Exim version 4.60
1237-----------------
1238
cc38ddbf
PH
1239PH/01 Two changes to the default runtime configuration:
1240
1241 (1) Move the checks for relay_from_hosts and authenticated clients from
1242 after to before the (commented out) DNS black list checks.
1243
1244 (2) Add control=submission to the relay_from_hosts and authenticated
1245 clients checks, on the grounds that messages accepted by these
1246 statements are most likely to be submissions.
5de37277 1247
72fdd6ae
PH
1248PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1249
1250 (1) Generate an error if the third argument for the ${prvs expansion is
1251 not a single digit.
1252
1253 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1254 string.
1255
1256 (3) Reset the variables that are obtained from the first argument of
1257 ${prvscheck and used in the second argument before leaving the code,
1258 because their memory is reclaimed, so using them afterwards may do
1259 silly things.
1260
1261 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1262 one (it's much easier than Tom thought :-).
1263
1264 (5) Because of (4), we can now allow for the use of $prvscheck_result
1265 inside the third argument.
cb9328de 1266
cb741023
PH
1267PH/03 For some reason, the default setting of PATH when running a command from
1268 a pipe transport was just "/usr/bin". I have changed it to
1269 "/bin:/usr/bin".
1270
f174f16e
PH
1271PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1272 anything to be listed in the output from -bV.
b2f5a032 1273
c25242d7
PH
1274PH/05 When a filter generated an autoreply, the entire To: header line was
1275 quoted in the delivery log line, like this:
1276
1277 => >A.N.Other <ano@some.domain> <original@ddress> ...
1278
1279 This has been changed so that it extracts the operative address. There
1280 may be more than one such address. If so, they are comma-separated, like
1281 this:
1282
1283 => >ano@some.domain,ona@other.domain <original@ddress> ...
1284
82c19f95
PH
1285PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1286 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1287 not being looked up in the rDNS to get a host name, Exim was showing the
1288 IP address twice in Received: lines, even though the IP addresses were
1289 identical. For example:
1290
1291 Received: from [1.2.3.4] (helo=[1.2.3.4])
1292
1293 However, if the real host name was known, it was omitting the HELO data
1294 if it matched the actual IP address. This has been tidied up so that it
1295 doesn't show the same IP address twice.
1296
d7ffbc12
PH
1297PH/07 When both +timestamp and +memory debugging was on, the value given by
1298 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1299 called by the debug printing, thereby overwriting the timestamp buffer.
1300 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1301
9f526266
PH
1302PH/08 When the original message was included in an autoreply transport, it
1303 always said "this is a copy of the message, including all the headers",
1304 even if body_only or headers_only was set. It now gives an appropriate
1305 message.
1306
87fcc8b9
PH
1307PH/09 Applied a patch from the Sieve maintainer which:
1308
1309 o fixes some comments
1310 o adds the (disabled) notify extension core
1311 o adds some debug output for the result of if/elsif tests
1312 o points to the current vacation draft in the documentation
1313 and documents the missing references header update
1314
1315 and most important:
1316
1317 o fixes a bug in processing the envelope test (when testing
1318 multiple envelope elements, the last element determinted the
1319 result)
1320
456682f5
PH
1321PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1322 Electronic Mail") by including:
1323
1324 Auto-submitted: auto-generated
1325
1326 in the messages that it generates (bounce messages and others, such as
1327 warnings). In the case of bounce messages for non-SMTP mesages, there was
1328 also a typo: it was using "Auto_submitted" (underscore instead of
1329 hyphen). Since every message generated by Exim is necessarily in response
1330 to another message, thes have all been changed to:
1331
1332 Auto-Submitted: auto-replied
1333
1334 in accordance with these statements in the RFC:
1335
1336 The auto-replied keyword:
1337
1338 - SHOULD be used on messages sent in direct response to another
1339 message by an automatic process,
1340
1341 - MUST NOT be used on manually-generated messages,
1342
1343 - MAY be used on Delivery Status Notifications (DSNs) and Message
1344 Disposition Notifications (MDNs),
1345
1346 - MUST NOT be used on messages generated by automatic or periodic
1347 processes, except for messages which are automatic responses to
1348 other messages.
1349
3e46c1aa
PH
1350PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1351 to the default Received: header definition.
456682f5 1352
49826d12
PH
1353PH/12 Added log selector acl_warn_skipped (default on).
1354
eba0c039
PH
1355PH/13 After a successful wildlsearch lookup, discard the values of numeric
1356 variables because (a) they are in the wrong storage pool and (b) even if
1357 they were copied, it wouldn't work properly because of the caching.
1358
a0d6ba8a
PH
1359PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1360 checking when decoding. Apparently there are clients that generate
1361 overlong encoded strings. Why am I not surprised?
1362
f0917727
PH
1363PH/15 If the first argument of "${if match_address" was not empty, but did not
1364 contain an "@" character, Exim crashed. Now it writes a panic log message
1365 and treats the condition as false.
1366
096fee00
PH
1367PH/16 In autoreply, treat an empty string for "once" the same as unset.
1368
024bd3c2
PH
1369PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1370 extension "envelope-auth". The code is finished and in agreement with
1371 other implementations, but there is no documentation so far and in fact,
1372 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1373 not changing the active code.
1374
1375 Print executed "if" and "elsif" statements when debugging is used. This
1376 helps a great deal to understand what a filter does.
1377
1378 Document more things not specified clearly in RFC3028. I had all this
1379 sorted out, when out of a sudden new issues came to my mind. Oops."
1380
df199fec
PH
1381PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1382 (Bugzilla #53).
1383
d27f1df3
PH
1384PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1385 canonical form (as documented). However, after a host name lookup from
1386 the IP address, check_host() was doing a simple string comparison with
1387 addresses acquired from the DNS when checking that the found name did
1388 have the original IP as one of its addresses. Since any found IPv6
1389 addresses are likely to be in abbreviated form, the comparison could
1390 fail. Luckily, there already exists a function for doing the comparison
1391 by converting both addresses to binary, so now that is used instead of
1392 the text comparison.
1393
96776534
PH
1394PH/20 There was another similar case to PH/19, when a complete host name was
1395 given in a host list; looking up its IP address could give an abbreviated
1396 form, whereas the current host's name might or might not be abbreviated.
1397 The same fix has been applied.
1398
5de37277 1399
9a799bc0
PH
1400Exim version 4.54
1401-----------------
1402
1403PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1404 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1405 It now does.
1406
99a4b039
PH
1407PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1408 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1409
1410PH/03 Typo: missing ".o" in src/pcre/Makefile.
1411
4b233853
PH
1412PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1413 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1414 Also, for "Auto-Submitted", treat anything other than "no" as
1415 non-personal, in accordance with RFC 3834. (Previously it treated
1416 anything starting "auto-" as non-personal.)
1417
8857ccfd
PH
1418TF/01 The control=submission/name=... option had a problem with syntax
1419 errors if the name included a slash character. The /name= option
1420 now slurps the rest of the string, so it can include any characters
1421 but it must come last in the list of options (after /sender_retain
1422 or /domain=).
1423
433a2980
PH
1424PH/05 Some modifications to the interface to the fake nameserver for the new
1425 testing suite.
1426
3e46c1aa 1427
9a799bc0 1428
e3a311ba
TK
1429Exim version 4.53
1430-----------------
1431
1432TK/01 Added the "success_on_redirect" address verification option. See
1433 NewStuff for rationale and an example.
1434
13b685f9
PH
1435PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1436
395ff96d
PH
1437PH/02 Patch to exigrep to allow it to work on syslog lines.
1438
5b68f6e4
PH
1439PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1440 fread() to skip over the body file's header line, because in Cygwin the
1441 header line is locked and is inaccessible.
1442
1ab52c69
PH
1443PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1444 co-exist for some time) to make it clear that it is the Exim ID that is
1445 referenced, not the Message-ID: header line.
1446
b07e6aa3
PH
1447PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1448 string_format() function, because snprintf() does not exist on all
1449 operating systems.
1450
254e032f
PH
1451PH/06 The use of forbid_filter_existstest now also locks out the use of the
1452 ${stat: expansion item.
1453
3af76a81
PH
1454PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1455 protocol synchronization error", to keep the pedants happy.
1456
2548ba04
PH
1457PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1458 well as for IRIX systems, when gcc is being used. See the host.c source
1459 file for comments.
1460
b6c6011d
PH
1461PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1462
cf39cf57
PH
1463PH/10 Named domain lists were not working if used in a queue_smtp_domains
1464 setting.
1465
f1513293
PH
1466PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1467 transport and to the smtp transport in LMTP mode.
1468
727549a4
PH
1469TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1470
af46795e
PH
1471PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1472 run a filter in a subprocess. This could lead to confusion in subsequent
1473 lookups in the parent process. There should also be a search_tidyup() at
1474 the end of the subprocess.
1475
d7b47fd0
PH
1476PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1477 only if the host matched helo_try_verify_hosts, which caused the
1478 verification to occur when the EHLO/HELO command was issued. The ACL just
1479 tested the remembered result. Now, if a previous verification attempt has
1480 not happened, "verify = helo" does it there and then.
1481
ee744174
JJ
1482JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1483
b582ab87
PH
1484TK/03 Fix log output including CR from clamd.
1485
41a13e0a
PH
1486PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1487 exist provoked a memory error which could cause a segfault.
1488
f625cc5a
PH
1489PH/15 Installed PCRE 6.2
1490
1491PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1492
21f7af35
PH
1493PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1494 of the problem. Specifically, suggested +O2 rather than +O1 for the
1495 HP-UX compiler.
1496
31480e42
PH
1497PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1498
2d280592
PH
1499PH/20 If a delivery was routed to a non-standard port by means of an SRV
1500 record, the port was not correctly logged when the outgoing_port log
1501 selector was set (it logged the transort's default port).
1502
7cd1141b
PH
1503PH/21 Added support for host-specific ports to manualroute, queryprogram,
1504 fallback_hosts, and "hosts" in the smtp transport.
1505
1506PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1507 host errors such as "Connection refused".
1508
750af86e
PH
1509PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1510 authentication with radiusclient 0.4.9:
1511
1512 - Error returned from rc_read_config was caught wrongly
1513 - Username/password not passed on to radius server due to wrong length.
1514
1515 The presumption is that some radiusclient API changes for 4.51/PH/17
1516 were not taken care of correctly. The code is still untested by me (my
1517 Linux distribution still has 0.3.2 of radiusclient), but it was
1518 contributed by a Radius user.
1519
1520PH/24 When doing a callout, the value of $domain wasn't set correctly when
1521 expanding the "port" option of the smtp transport.
1522
4304270b
TK
1523TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1524 while reading a MIME header. Thanks to Tom Hughes for a patch.
1525
750af86e
PH
1526PH/24 Include config.h inside local_scan.h so that configuration settings are
1527 available.
1528
64ffc24f
PH
1529PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1530 that in an ACL for RCPT (for example), you can examine exactly what was
1531 received.
1532
5dd9625b
PH
1533PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1534 commands, but it was not correctly comparing the address with the actual
1535 client host address. Thus, it would show the EHLO address in Received:
1536 header lines when this was not necessary.
1537
5591031b
PH
1538PH/27 Added the % operator to ${eval:}.
1539
ba18e66a
PH
1540PH/28 Exim tries to create and chdir to its spool directory when it starts;
1541 it should be ignoring failures (because with -C, for example, it has lost
1542 privilege). It wasn't ignoring creation failures other than "already
1543 exists".
1544
9cec981f
PH
1545PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1546 -bV or -d is used.
1547
aa2b5c79
PH
1548PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1549 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1550 too many continuations, the temporary file was not being removed, and the
1551 return code was incorrect.
aa2b5c79 1552
48a53b7f
PH
1553PH/31 Missing "BOOL" in function definition in filtertest.c.
1554
1c59d63b
PH
1555PH/32 Applied Sieve patches from the maintainer.
1556
671012da
TK
1557TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1558
1509d3a8
PH
1559PH/33 Added "verify = not_blind".
1560
1561PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1562 Local/Makefile (with some defaults set). These are used in built scripts
1563 such as exicyclog, but they have never been used in the exim_install
1564 script (though there are many overriding facilities there). I have
1565 arranged that the exim_install script now takes note of these two
1566 settings.
1567
1568PH/35 Installed configuration files for Dragonfly.
1569
2fe1a124
PH
1570PH/36 When a locally submitted message by a trusted user did not contain a
1571 From: header, and the sender address was obtained from -f or from an SMTP
1572 MAIL command, and the trusted user did not use -F to supply a sender
1573 name, $originator_name was incorrectly used when constructing a From:
1574 header. Furthermore, $originator_name was used for submission mode
1575 messages from external hosts without From: headers in a similar way,
1576 which is clearly wrong.
1577
8800895a
PH
1578PH/37 Added control=suppress_local_fixups.
1579
ccfdb010
PH
1580PH/38 When log_selector = +received_sender was set, and the addition of the
1581 sender made the log line's construction buffer exactly full, or one byte
1582 less than full, an overflow happened when the terminating "\n" was
1583 subsequently added.
1584
1130bfb0
PH
1585PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1586 when the result of a list match is failure because a DNS lookup failed.
1587
ebcb507f
PH
1588PH/40 RM_COMMAND is now used in the building process.
1589
c35e155c
PH
1590PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1591 the "build-* directories that it finds.
1592
95d1f782
PH
1593PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1594 address in a domain literal was a prefix of an interface address.
1595
fd6de02e
PH
1596PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1597 when verifying a sender address, unless rewrite_headers is false.
1598
58de37c5
PH
1599PH/44 Wrote a long comment about why errors_to addresses are verified as
1600 recipients, not senders.
1601
261cf466
TF
1602TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1603 the ratelimit ACL was added.
1604
3ee512ff
PH
1605PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1606
e08c430f
PH
1607PH/46 Added extra information about PostgreSQL errors to the error string.
1608
bef5a11f
PH
1609PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1610 avoiding the need to install special zones in a real server. This is
1611 backwards compatible; if it can't find the fake resolver, it drops back.
1612 Thus, both old and new test suites can be run.
1613
7546de58
TF
1614TF/02 Added util/ratelimit.pl
1615
e5d5a95f
TF
1616TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1617 clock is set back in time.
1618
2e88a017
TF
1619TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1620 Candler <B.Candler@pobox.com>.
1621
a5f65aa4
TF
1622TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1623 OK for addresses that are the result of redirections.
1624
e7726cbf
PH
1625PH/48 A number of further additions for the benefit of the new test suite,
1626 including a fake gethostbyname() that interfaces to the fake DNS resolver
1627 (see PH/47 above).
1628
a7fdad5b
TF
1629TF/06 The fix for widen_domains has also been applied to qualify_single and
1630 search_parents which are the other dnslookup options that can cause
1631 header rewrites.
1632
6af56900
PH
1633PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1634 type ("H").
1635
0925ede6
PH
1636PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1637
66afa403
TF
1638TF/07 Exim produced the error message "an SRV record indicated no SMTP
1639 service" if it encountered an MX record with an empty target hostname.
1640 The message is now "an MX or SRV record indicated no SMTP service".
1641
0154e85a
TF
1642TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1643 if the DNS of the sending site is misconfigured. This is quite a
1644 common situation. This change restores the behaviour of treating a
1645 helo verification defer as a failure.
1646
16f12c76
PH
1647PH/51 If self=fail was set on a router, the bounce message did not include the
1648 actual error message.
1649
bbe902f0 1650
e5a9dba6
PH
1651Exim version 4.52
1652-----------------
1653
1654TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1655
22c3b60b
PH
1656PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1657 command itself ended in error, the underlying message about the transport
1658 filter timeout was being overwritten with the pipe command error. Now the
1659 underlying error message should be appended to the second error message.
1660
06a9b4b5
PH
1661TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1662
c1ac6996
PH
1663PH/02 Reduce the amount of output that "make" produces by default. Full output
1664 can still be requested.
1665
9c7a242c
PH
1666PH/03 The warning log line about a condition test deferring for a "warn" verb
1667 was being output only once per connection, rather than after each
1668 occurrence (because it was using the same function as for successful
1669 "warn" verbs). This seems wrong, so I have changed it.
1670
87ba3f5f
PH
1671TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1672 it should not have, which might have caused a crash in the right
1673 circumstances, but probably never did.
1674
1675PH/04 Installed a modified version of Tony Finch's patch to make submission
1676 mode fix the return path as well as the Sender: header line, and to
1677 add a /name= option so that you can make the user's friendly name appear
1678 in the header line.
1679
29aba418
TF
1680TF/03 Added the control = fakedefer ACL modifier.
1681
fe0dab11
TF
1682TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1683 Mark Lowes for thorough testing.
870f6ba8 1684
11d337a4
TK
1685TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1686
1687TK/03 Merged latest SRS patch from Miles Wilton.
1688
415c8f3b
PH
1689PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1690 with the definition in sysexits.h (which is #included earlier).
1691 Fortunately, Exim does not actually use EX_OK. The code used to try to
1692 preserve the sysexits.h value, by assumimg that macro definitions were
1693 scanned for macro replacements. I have been disabused of this notion,
1694 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1695
958541e9
PH
1696PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1697 in the smtp transport. When a block could not be written in a single
1698 write() function, the timeout was being re-applied to each part-write.
1699 This seems wrong - if the receiver was accepting one byte at a time it
1700 would take for ever. The timeout is now adjusted when this happens. It
1701 doesn't have to be particularly precise.
1702
c206415f
TK
1703TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1704 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1705
2a4be8f9
PH
1706PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1707 without a domain if the check to <postmaster@domain> fails.
1708
1cba11c5
SC
1709SC/01 Eximstats: added -xls and the ability to specify output files
1710 (patch written by Frank Heydlauf).
1711
1712SC/02 Eximstats: use FileHandles for outputing results.
1713
1714SC/03 Eximstats: allow any combination of xls, txt, and html output.
1715
1716SC/04 Eximstats: fixed display of large numbers with -nvr option
1717
1718SC/05 Eximstats: fixed merging of reports with empty tables.
1719
1720SC/06 Eximstats: added the -include_original_destination flag
1721
1722SC/07 Eximstats: removed tabs and trailing whitespace.
1723
1005d00e
TK
1724TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1725
1726TK/06 MBOX spool code: Add real "From " MBOX separator line
1727 so the .eml file is really in mbox format (even though
1728 most programs do not really care). Patch from Alex Miller.
1729
1730TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1731 The latter is generated from $received_to and is only set if the
1732 message has one envelope recipient. SA can use these headers,
1733 obviously out-of-the-box. Patch from Alex Miller.
1734
9b4768fa
PH
1735PH/08 The ${def test on a variable was returning false if the variable's
1736 value was "0", contrary to what the specification has always said!
1737 The result should be true unless the variable is empty.
1738
1739PH/09 The syntax error of a character other than { following "${if
1740 def:variable_name" (after optional whitespace) was not being diagnosed.
1741 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1742 accidental colon was present, for example, could give incorrect results.
1743
0d7eb84a
PH
1744PH/10 Tidied the code in a number of places where the st_size field of a stat()
1745 result is used (not including appendfile, where other changes are about
1746 to be made).
1747
1748PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1749 This involved changing a lot of size variables from int to off_t. It
1750 should work with maildirs and everything.
1751
40727bee
TK
1752TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1753 spamd dying while we are connected to it.
1754
554d2369
TF
1755TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1756 <jgh@wizmail.org>
1757
1f922db1
PH
1758PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1759 function for BDB 4.3.
1760
ef213c3b
PH
1761PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1762
8ac170f3
PH
1763PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1764 the sources for PCRE have been re-arranged and more files are now
1765 involved.
1766
b1c749bb
PH
1767PH/15 The code I had for printing potentially long long variables in PH/11
1768 above was not the best (it lost precision). The length of off_t variables
1769 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1770 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1771 to be "long long int" or "long int". This is needed for the internal
1772 formatting function string_vformat().
b1c749bb 1773
4aac9b49
PH
1774PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1775 the configuration file to be ":syslog", then the script "guesses" where
1776 the logs files are, rather than using the compiled in default. In our
1777 case the guess is not the same as the compiled default, so the script
1778 suddenly stopped working when I started to use syslog. The patch checks
1779 to see if log_file_path is "". If so, it attempts to read it from exim
1780 with no configuration file to get the compiled in version, before it
1781 falls back to the previous guessing code."
1782
294520c8
TK
1783TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1784 implementing BATV in an Exim configuration. See NewStuff for the gory
1785 details.
1786
5bd022fe
PH
1787PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1788 Makefile that are specific to HP-UX.
1789
90e9ce59
PH
1790PH/18 If the "use_postmaster" option was set for a recipient callout together
1791 with the "random" option, the postmaster address was used as the MAIL
1792 FROM address for the random test, but not for the subsequent recipient
1793 test. It is now used for both.
1794
5ea81592
PH
1795PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1796 patch removes a few documentation additions to RFC 3028, because the
1797 latest draft now contains them. It adds the new en;ascii-case comparator
1798 and a new error check for 8bit text in MIME parts. Comparator and
1799 require names are now matched exactly. I enabled the subaddress
1800 extension, but it is not well tested yet (read: it works for me)."
1801
c6c2dc1d
PH
1802PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1803 rework some of the code of TK/09 above to avoid the hardwired use of
1804 "%lld" and "long long". Replaced the call to snprintf() with a call to
1805 string_vformat().
1806
fffffe4c
PH
1807PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1808 records point to non-existent hosts", "retry timeout exceeded", and
1809 "retry time not reached for any host after a long failure period".
ca02eafb 1810
9a26b6b2
PH
1811PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1812 experimental DomainKeys support:
1813
1814 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1815 (2) On an error such as an illegally used "control", the wrong name for
1816 the control was given.
1817
1818 These problems did NOT occur unless DomainKeys support was compiled.
1819
4aee0225
PH
1820PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1821
32d668a5
PH
1822PH/24 Added ${if match_ip condition.
1823
8187c3f3
PH
1824PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1825 databases so that it will be absolutely obvious if a crash occurs in the
1826 DB library. This is a regular occurrence (often caused by mis-matched
1827 db.h files).
1828
ff790e47 1829PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1830 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1831 picked up on a user's system that detects such things. There doesn't seem
1832 to be a gcc warning option for this - only an attribute that has to be
1833 put on the function's prototype. It seems that in Fedora Core 4 they have
1834 set this on a number of new functions. No doubt there will be more in due
1835 course.
ff790e47 1836
5417f6d1
PH
1837PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1838 specify a transport. However, if an address that was verified by such a
1839 router was the subject of a callout, Exim crashed because it tried to
1840 read the rcpt_include_affixes from the non-existent transport. Now it
1841 just assumes that the setting of that option is false. This bug was
1842 introduced by 4.51/PH/31.
1843
59cf8544
PH
1844PH/28 Changed -d+all to exclude +memory, because that information is very
1845 rarely of interest, but it makes the output a lot bigger. People tend to
1846 do -d+all out of habit.
1847
e7ad8a65
PH
1848PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1849 code in os-type was giving problems when libc.so lives in lib64, like on
1850 x86_64 Fedora Core.
1851
ade42478
PH
1852PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1853 aren't the modern standard, and it seems that some systems' include files
1854 don't always have them. Exim was already checking for some of the newer
1855 ones like T_AAAA, and defining it itself. I've added checks for all the
1856 record types that Exim uses.
1857
182ad5cf
PH
1858PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1859 not automatically generating a new one, as it is supposed to. This
1860 prevented TLS from working. If the file did exist, but contained invalid
1861 data, a new version was generated, as expected. It was only the case of a
1862 non-existent file that was broken.
1863
b0d9fc80
TK
1864TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1865 with a change in libdomainkeys > 0.64.
1866
1867TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1868 from DNS. If the selector record carries the flag, it now has
1869 precedence over the domain-wide flag.
1870
1871TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1872
47c7a64a
PH
1873PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1874 the use of a port name that isn't defined in /etc/services) occurred, the
1875 message was deferred as in a normal delivery, and thus remained on the
1876 spool, instead of being failed because of the mua_wrapper setting. This
1877 is now fixed, and I tidied up some of the mua_wrapper messages at the
1878 same time.
1879
a388bce4
SC
1880SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1881 the messages in a hash of arrays rather than using individual hashes.
1882 This is a bit cleaner and results in dramatic memory savings, albeit
1883 at a slight CPU cost.
1884
1885SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1886 as requested by Marc Sherman.
1887
1888SC/10 Eximstats: added histograms for user specified patterns as requested
1889 by Marc Sherman.
1890
0793e4ed
SC
1891SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1892
c58b88df
PH
1893PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1894 fopen() in the content-scanning modules that did not already have it.
1895
e7ad8a65 1896
7982096b
PH
1897Exim version 4.51
1898-----------------
1899
1a46a8c5
PH
1900TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1901 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1902
2f079f46 1903TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1904
1905TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1906
1907PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1908 to test Sieve filters that use "vacation".
1909
1910PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1911 that changes the way the GnuTLS parameters are stored in the cache file.
1912 The new format can be generated externally. For backward compatibility,
1913 if the data in the cache doesn't make sense, Exim assumes it has read an
1914 old-format file, and it generates new data and writes a new file. This
1915 means that you can't go back to an older release without removing the
1916 file.
1917
1918PH/03 A redirect router that has both "unseen" and "one_time" set does not
1919 work if there are any delivery delays because "one_time" forces the
1920 parent to be marked "delivered", so its unseen clone is never tried
1921 again. For this reason, Exim now forbids the simultaneous setting of
1922 these two options.
1923
1924PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1925 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1926 entry if you want to know the details. The fix, however, neglected to
1927 consider the case when local delivery batching is involved. The test for
1928 "previously delivered" was not happening when checking to see if an
1929 address could be batched with a previous (undelivered) one; under
1930 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1931 address.
1a46a8c5
PH
1932
1933PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1934 in its include files, and this causes problems building Exim.
1935
1936PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1937 header_syntax) but Exim was just ignoring anything given after a slash.
1938 In particular, this caused confusion with an attempt to use "verify =
1939 reverse_host_lookup/defer_ok". An error is now given when options are
1940 supplied for verify items that do not have them. (Maybe reverse_host_
1941 lookup should have a defer_ok option, but that's a different point.)
1942
1943PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1944 defined by RFC 821) to 2048, because there were problems with some AUTH
1945 commands, and RFC 1869 says the size should be increased for extended
1946 SMTP commands that take arguments.
1947
1948PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1949 Finch).
1950
1951PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1952 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1953
49c2d5ea
PH
1954PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1955 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1956 whatever). Otherwise the password may appear in the log. Following change
1957 PH/42 below, there is no longer a chance of it appearing in a bounce
1958 message.
49c2d5ea 1959
bf759a8b
PH
1960PH/11 Installed exipick version 20050225.0 from John Jetmore.
1961
83364d30
PH
1962PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1963 of its addresses was ever tried. (Bugzilla bug #2.)
1964
7999bbd7
PH
1965PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1966 the result incorrectly in the debug output. (It correctly added a newline
1967 to what was transported.)
1968
7dbf77c9
PH
1969TF/01 Added $received_time.
1970
74e0617f
PH
1971PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1972 commented out examples of how to interface to a virus scanner and to
1973 SpamAssassin. Also added commented examples of av_scanner and
1974 spamd_address settings.
1975
2f079f46
PH
1976PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1977 and controls are allowed in which ACLs. There were a couple of minor
1978 errors. Some of the entries in the conditions table (which is a table of
1979 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1980 negation of where the condition IS allowed.
1981
8c841523
PH
1982PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1983
7766a4f0
PH
1984PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1985 header file does not have a version number, so I've had to invent a new
1986 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1987 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1988 radiusclient), but it was contributed by a Radius user.
1989
8b417f2c
PH
1990PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1991 files or directories, for OpenSSL.
1992
901f42cb
PH
1993PH/19 When an Exim process that is running as root has to create an Exim log
1994 file, it does so in a subprocess that runs as exim:exim so as to get the
1995 ownership right at creation (otherwise, other Exim processes might see
1996 the file with the wrong ownership). There was no test for failure of this
1997 fork() call, which would lead to the process getting stuck as it waited
1998 for a non-existent subprocess. Forks do occasionally fail when resources
1999 run out. I reviewed all the other calls to fork(); they all seem to check
2000 for failure.
2001
f9b9210e
PH
2002PH/20 When checking for unexpected SMTP input at connect time (before writing
2003 the banner), Exim was not dealing correctly with a non-positive return
2004 from the read() function. If the client had disconnected by this time,
2005 the result was a log entry for a synchronization error with an empty
2006 string after "input=" when read() returned zero. If read() returned -1
2007 (an event I could not check), uninitialized data bytes were printed.
2008 There were reports of junk text (parts of files, etc) appearing after
2009 "input=".
2010
54cdb463
PH
2011PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2012
cf00dad6
PH
2013PH/22 Added support for macro redefinition, and (re)definition in between
2014 driver and ACL definitions.
2015
acb1b346
PH
2016PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2017 forgetting to use the resulting value; it was using the unexpanded value.
2018
c5ddb310
PH
2019PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2020 hadn't been configured. The fix is from Juergen Kreileder, who
2021 understands it better than I do:
2022
2023 "Here's what I see happening with three configured cyrus_sasl
2024 authenticators configured (plain, login, cram-md5):
2025
2026 On startup auth_cyrus_sasl_init() gets called for each of these.
2027 This means three calls to sasl_listmech() without a specified mech_list.
2028 => SASL tests which mechs of all available mechs actually work
2029 => three warnings about OTP not working
2030 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2031
2032 With the patch, sasl_listmech() also gets called three times. But now
2033 SASL's mech_list option is set to the server_mech specified in the the
2034 authenticator. Or in other words, the answer from sasl_listmech()
2035 gets limited to just the mech you're testing for (which is different
2036 for each call.)
2037 => the return list contains just 'plain' or 'login', 'cram-md5' or
2038 nothing depending on the value of ob->server_mech.
2039
2040 I've just tested the patch: Authentication still works fine,
2041 unavailable mechs specified in the exim configuration are still
2042 caught, and the auth.log warnings about OTP are gone."
2043
31619da6
PH
2044PH/25 When debugging is enabled, the contents of the command line are added
2045 to the debugging output, even when log_selector=+arguments is not
2046 specified.
2047
bebaf0fc
PH
2048PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2049 answer is "GNU", and only if the return is "GNU/something" is the answer
2050 "Linux".
2051
475fe28a
PH
2052PH/27 $acl_verify_message is now set immediately after the failure of a
2053 verification in an ACL, and so is available in subsequent modifiers. In
2054 particular, the message can be preserved by coding like this:
2055
2056 warn !verify = sender
2057 set acl_m0 = $acl_verify_message
2058
2059 Previously, $acl_verify_message was set only while expanding "message"
2060 and "log_message" when a very denied access.
2061
7e8bec7a
PH
2062PH/28 Modified OS/os.c-Linux with
2063
2064 -#ifndef OS_LOAD_AVERAGE
2065 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2066
2067 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2068 nomenclature these days.)
2069
e4a89c47
PH
2070PH/29 Installed patch from the Sieve maintainer that adds the options
2071 sieve_useraddress and sieve_subaddress to the redirect router.
2072
5ca2a9a1
PH
2073PH/30 In these circumstances:
2074 . Two addresses routed to the same list of hosts;
2075 . First host does not offer TLS;
2076 . First host accepts first address;
2077 . First host gives temporary error to second address;
2078 . Second host offers TLS and a TLS session is established;
2079 . Second host accepts second address.
2080 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2081 and peerdn, if requested) that were in fact used only for the second
2082 address.
7e8bec7a 2083
c688b954
PH
2084PH/31 When doing a callout as part of verifying an address, Exim was not paying
2085 attention to any local part prefix or suffix that was matched by the
2086 router that accepted the address. It now behaves in the same way as it
2087 does for delivery: the affixes are removed from the local part unless
2088 rcpt_include_affixes is set on the transport.
2089
fed77020
PH
2090PH/32 Add the sender address, as F=<...>, to the log line when logging a
2091 timeout during the DATA phase of an incoming message.
2092
7fe1560f
PH
2093PH/33 Sieve envelope tests were broken for match types other than :is. I have
2094 applied a patch sanctioned by the Sieve maintainer.
c688b954 2095
ebb6e6d5
PH
2096PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2097 the uid or gid is negative. A case of a negative gid caused this to be
2098 noticed. The fix allows for either to be negative.
2099
9c4e8f60
PH
2100PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2101 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2102 overlooked.
2103
2104PH/36 The change PH/12 above was broken. Fixed it.
2105
d7174846
PH
2106PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2107 the grounds that routing the same address twice would always produce the
2108 same answer. This might have been true once, but it is certainly no
2109 longer true now. Routing a child address may depend on the previous
2110 routing that produced that child. Some complicated redirection strategies
2111 went wrong when messages had multiple recipients, and made Exim's
2112 behaviour dependent on the order in which the addresses were given.
2113
2114 I have moved the duplicate checking until after the routing is complete.
2115 Exim scans the addresses that are assigned to local and remote
2116 transports, and removes any duplicates. This means that more work will be
2117 done, as duplicates will always all be routed, but duplicates are
2118 presumably rare, so I don't expect this is of any significance.
2119
2120 For deliveries to pipes, files, and autoreplies, the duplicate checking
2121 still happens during the routing process, since they are not going to be
2122 routed further.
2123
cfe75fc3
PH
2124PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2125 It corrects a timeout issue with spamd. This is Ian's comment: "The
2126 background is that sometimes spamd either never reads data from a
2127 connection it has accepted, or it never writes response data. The exiscan
2128 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2129 blindly assumes that writes won't block so it may never time out."
2130
be22d70e
PH
2131PH/39 Allow G after quota size as well as K and M.
2132
0612b098
PH
2133PH/40 The value set for $authenticated_id in an authenticator may not contain
2134 binary zeroes or newlines because the value is written to log lines and
2135 to spool files. There was no check on this. Now the value is run through
2136 the string_printing() function so that such characters are converted to
2137 printable escape sequences.
2138
2e0c1448
PH
2139PH/41 $message_linecount is a new variable that contains the total number of
2140 lines in the message. Compare $body_linecount, which is the count for the
2141 body only.
2142
447d236c
PH
2143PH/42 Exim no longer gives details of delivery errors for specific addresses in
2144 bounce and delay warning messages, except in certain special cases, which
2145 are as follows:
2146
2147 (a) An SMTP error message from a remote host;
2148 (b) A message specified in a :fail: redirection;
2149 (c) A message specified in a "fail" command in a system filter;
2150 (d) A message specified in a FAIL return from the queryprogram router;
2151 (e) A message specified by the cannot_route_message router option.
2152
2153 In these cases only, Exim does include the error details in bounce and
2154 warning messages. There are also a few cases where bland messages such
2155 as "unrouteable address" or "local delivery error" are given.
2156
d20976dc
PH
2157PH/43 $value is now also set for the "else" part of a ${run expansion.
2158
f656d135
PH
2159PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2160 being worked on, but at least Exim now implements the latest version to
2161 play with."
2162
2e2a30b4
PH
2163PH/45 In a pipe transport, although a timeout while waiting for the pipe
2164 process to complete was treated as a delivery failure, a timeout while
2165 writing the message to the pipe was logged, but erroneously treated as a
2166 successful delivery. Such timeouts include transport filter timeouts. For
2167 consistency with the overall process timeout, these timeouts are now
2168 treated as errors, giving rise to delivery failures by default. However,
2169 there is now a new Boolean option for the pipe transport called
2170 timeout_defer, which, if set TRUE, converts the failures into defers for
2171 both kinds of timeout. A transport filter timeout is now identified in
2172 the log output.
2173
9176e9f0
PH
2174PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2175 systems where "make" and "gmake" are different, calling "gmake" at top
2176 level broke things. I've arranged for the value of $(MAKE) to be passed
2177 from the Makefile to this script so that it can call the same version of
2178 "make".
2179
7982096b 2180
bbe902f0
PH
2181A note about Exim versions 4.44 and 4.50
2182----------------------------------------
2183
2184Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2185changes of various kinds. As a consequence, a big documentation update was
2186needed. This delayed the release for rather longer than seemed good, especially
2187in the light of a couple of (minor) security issues. Therefore, the changes
2188that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2189release. So 4.44 and 4.50 are in effect two different branches that both start
2190from 4.43.
2191
2192I have left the 4.50 change log unchanged; it contains all the changes since
21934.43. The change log for 4.44 is below; many of its items are identical to
2194those for 4.50. This seems to be the most sensible way to preserve the
2195historical information.
2196
2197
f7b63901 2198Exim version 4.50
495ae4b0
PH
2199-----------------
2200
5fe762f6
PH
2201 1. Minor wording change to the doc/README.SIEVE file.
2202
139059f6 2203 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2204 computation of the current number of files was incorrect.
495ae4b0 2205
7086e875
PH
2206 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2207 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2208 place.
2209
35af9f61
PH
2210 4. Give more explanation in the error message when the command for a transport
2211 filter fails to execute.
2212
b668c215
PH
2213 5. There are several places where Exim runs a non-Exim command in a
2214 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2215 was being done only for the command run by the queryprogram router. It is
2216 now done for all such subprocesses. The other cases are: ${run, transport
2217 filters, and the commands run by the lmtp and pipe transports.
2218
a494b1e1
PH
2219 6. Added CONFIGURE_GROUP build-time option.
2220
2221 7. Some older OS have a limit of 256 on the maximum number of file
2222 descriptors. Exim was using setrlimit() to set 1000 as a large value
2223 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2224 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2225
c5fcb476
PH
2226 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2227 was an oversight, and furthermore, ever since the addition of extra
2228 controls (e.g. 4.43/32), the checks on when to allow different forms of
2229 "control" were broken. There should now be diagnostics for all cases when a
2230 control that does not make sense is encountered.
2231
69358f02
PH
2232 9. Added the /retain_sender option to "control=submission".
2233
5be20824
PH
223410. $recipients is now available in the predata ACL (oversight).
2235
eb2c0248
PH
223611. Tidy the search cache before the fork to do a delivery from a message
2237 received from the command line. Otherwise the child will trigger a lookup
2238 failure and thereby defer the delivery if it tries to use (for example) a
2239 cached ldap connection that the parent has called unbind on.
2240
2a3eea10
PH
224112. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2242 of $address_data from the recipient verification was clobbered by the
2243 sender verification.
2244
224513. The value of address_data from a sender verification is now available in
2246 $sender_address_data in subsequent conditions in the ACL statement.
2247
23c7ff99
PH
224814. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2249
4deaf07d
PH
225015. Added a new option "connect=<time>" to callout options, to set a different
2251 connection timeout.
2252
926e1192
PH
225316. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2254 was its contents. (It was OK if the option was not defined at all.)
2255
650edc6f
PH
225617. A "Completed" log line is now written for messages that are removed from
2257 the spool by the -Mrm option.
2258
2c7db3f5
PH
225918. New variables $sender_verify_failure and $recipient_verify_failure contain
2260 information about exactly what failed.
2261
3d235903
PH
226219. Added -dd to debug only the daemon process.
2263
7c7ad977
PH
226420. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2265 handles timeouts, both on the server side and network timeouts. Renamed the
2266 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2267
981756db
PH
226821. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2269 It is now set to "smtps".
2270
d4eb88df
PH
227122. $host_address is now set to the target address during the checking of
2272 ignore_target_hosts.
2273
227423. When checking ignore_target_hosts for an ipliteral router, no host name was
2275 being passed; this would have caused $sender_host_name to have been used if
2276 matching the list had actually called for a host name (not very likely,
2277 since this list is usually IP addresses). A host name is now passed as
2278 "[x.x.x.x]".
2279
7d468ab8
PH
228024. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2281 code that specifies a non-restarting handler (typically sigaction() in
2282 modern systems) in an attempt to fix a rare and obscure crash bug.
2283
228425. Narrowed the window for a race in the daemon that could cause it to ignore
2285 SIGCHLD signals. This is not a major problem, because they are used only to
2286 wake it up if nothing else does.
2287
62c0818f
PH
228826. A malformed maildirsize file could cause Exim to calculate negative values
2289 for the mailbox size or file count. Odd effects could occur as a result.
2290 The maildirsize information is now recalculated if the size or filecount
2291 end up negative.
2292
26034054
PH
229327. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2294 support for a long time. Removed HAVE_SYS_VFS_H.
2295
af66f652
PH
229628. Installed the latest version of exipick from John Jetmore.
2297
90af77f4
PH
229829. In an address list, if the pattern was not a regular expression, an empty
2299 subject address (from a bounce message) matched only if the pattern was an
2300 empty string. Non-empty patterns were not even tested. This was the wrong
2301 because it is perfectly reasonable to use an empty address as part of a
2302 database query. An empty address is now tested by patterns that are
2303 lookups. However, all the other forms of pattern expect the subject to
2304 contain a local part and a domain, and therefore, for them, an empty
2305 address still always fails if the pattern is not itself empty.
2306
d8ef3577
PH
230730. Exim went into a mad DNS loop when attempting to do a callout where the
2308 host was specified on an smtp transport, and looking it up yielded more
2309 than one IP address.
2310
5cb8cbc6
PH
231131. Re-factored the code for checking spool and log partition space into a
2312 function that finds that data and another that does the check. The former
2313 is then used to implement four new variables: $spool_space, $log_space,
2314 $spool_inodes, and $log_inodes.
2315
14702f5b
PH
231632. The RFC2047 encoding function was originally intended for short strings
2317 such as real names; it was not keeping to the 75-character limit for
2318 encoded words that the RFC imposes. It now respects the limit, and
2319 generates multiple encoded words if necessary. To be on the safe side, I
2320 have increased the buffer size for the ${rfc2047: expansion operator from
2321 1024 to 2048 bytes.
2322
063b1e99
PH
232333. It is now permitted to omit both strings after an "if" condition; if the
2324 condition is true, the result is "true". As before, when the second string
2325 is omitted, a false condition yields an empty string. This makes it less
2326 cumbersome to write custom ACL and router conditions.
2327
652e1b65
PH
232834. Failure to deliver a bounce message always caused it to be frozen, even if
2329 there was an errors_to setting on the router. The errors_to setting is now
2330 respected.
2331
6f0c9a4f
PH
233235. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2333 canonical form (fully expanded) before being placed in
2334 $sender_host_address.
2335
33397d19
PH
233636. The table in the code that translates DNS record types into text (T_A to
2337 "A" for instance) was missing entries for NS and CNAME. It is just possible
2338 that this could have caused confusion if both these types were looked up
2339 for the same domain, because the text type is used as part of Exim's
2340 per-process caching. But the chance of anyone hitting this buglet seems
2341 very small.
2342
7bb56e1f
PH
234337. The dnsdb lookup has been extended in a number of ways.
2344
2345 (1) There is a new type, "zns", which walks up the domain tree until it
2346 finds some nameserver records. It should be used with care.
2347
ea3bc19b
PH
2348 (2) There is a new type, "mxh", which is like "mx" except that it returns
2349 just the host names, not the priorities.
2350
2351 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2352 looked up. The behaviour when one of the lookups defers can be
2353 controlled by a keyword.
7bb56e1f 2354
ea3bc19b 2355 (4) It is now possible to specify the separator character for use when
7bb56e1f 2356 multiple records are returned.
33397d19 2357
0bcb2a0e
PH
235838. The dnslists ACL condition has been extended: it is now possible to supply
2359 a list of IP addresses and/or domains to be looked up in a particular DNS
2360 domain.
2361
2ac0e484
PH
236239. Added log_selector=+queue_time_overall.
2363
4e1fde53
PH
236440. When running the queue in the test harness, wait just a tad after forking a
2365 delivery process, to get repeatability of debugging output.
2366
de365ded
PH
236741. Include certificate and key file names in error message when GnuTLS fails
2368 to set them up, because the GnuTLS error message doesn't include the name
2369 of the failing file when there is a problem reading it.
2370
f05da2e8
PH
237142. Allow both -bf and -bF in the same test run.
2372
d6453af2
PH
237343. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2374
f7b63901
PH
237544. The "Exiscan patch" is now merged into the mainline Exim source.
2376
237745. Sometimes the final signoff response after QUIT could fail to get
2378 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2379 < 0 before doing a fflush(). This bug looks as though it goes back to the
2380 introduction of TLS in release 3.20, but "sometimes" must have been rare
2381 because the tests only now provoked it.
2382
a444213a
PH
238346. Reset the locale to "C" after calling embedded Perl, in case it was changed
2384 (this can affect the format of dates).
2385
0ec020ea
PH
238647. exim_tidydb, when checking for the continued existence of a message for
2387 which it has found a message-specific retry record, was not finding
2388 messages that were in split spool directories. Consequently, it was
2389 deleting retry records that should have stayed in existence.
2390
b1206957
PH
239148. Steve fixed some bugs in eximstats.
2392
239349. The SPA authentication driver was not abandoning authentication and moving
2394 on to the next authenticator when an expansion was forced to fail,
2395 contradicting the general specification for all authenticators. Instead it
2396 was generating a temporary error. It now behaves as specified.
2397
26dd5a95
PH
239850. The default ordering of permitted cipher suites for GnuTLS was pessimal
2399 (the order specifies the preference for clients). The order is now AES256,
2400 AES128, 3DES, ARCFOUR128.
2401
343b2385
PH
240251. Small patch to Sieve code - explicitly set From: when generating an
2403 autoreply.
2404
1c5466b9
PH
240552. Exim crashed if a remote delivery caused a very long error message to be
2406 recorded - for instance if somebody sent an entire SpamAssassin report back
2407 as a large number of 550 error lines. This bug was coincidentally fixed by
2408 increasing the size of one of Exim's internal buffers (big_buffer) that
2409 happened as part of the Exiscan merge. However, to be on the safe side, I
2410 have made the code more robust (and fixed the comments that describe what
2411 is going on).
2412
55ee9ee3
PH
241353. Now that there can be additional text after "Completed" in log lines (if
2414 the queue_time_overall log selector is set), a one-byte patch to exigrep
2415 was needed to allow it to recognize "Completed" as not the last thing in
2416 the line.
2417
d38f8232
PH
241854. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2419 patch that reportedly fixes this has been added. I am not expert enough to
2420 create a test for it. This is what the patch creator wrote:
2421
2422 "I found a little strange behaviour of ldap code when working with
2423 Windows 2003 AD Domain, where users was placed in more than one
2424 Organization Units. When I tried to give exim partial DN, the exit code
2425 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2426 But simultaneously result of request was absolutely normal ldap result,
2427 so I produce this patch..."
2428
3295e65b
PH
2429 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2430 REFERENCE, so I have modified the code to exclude the patch when that macro
2431 is not defined.
2432
7102e136
PH
243355. Some experimental protocols are using DNS PTR records for new purposes. The
2434 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2435 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2436 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2437 CAN-2005-0021
7102e136 2438
3ca0ba97
PH
243956. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2440
c2bcbe20
PH
244157. Double the size of the debug message buffer (to 2048) so that more of very
2442 long debug lines gets shown.
2443
18ce445d
PH
244458. The exicyclog utility now does better if the number of log files to keep
2445 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2446
1f5b4c3d
PH
244759. Two changes related to the smtp_active_hostname option:
2448
2449 (1) $smtp_active_hostname is now available as a variable.
2450 (2) The default for smtp_banner uses $smtp_active_hostname instead
2451 of $primary_hostname.
2452
b975ba52
PH
245360. The host_aton() function is supposed to be passed a string that is known
2454 to be a valid IP address. However, in the case of IPv6 addresses, it was
2455 not checking this. This is a hostage to fortune. Exim now panics and dies
2456 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2457 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2458 components; fortuitously, this particular loophole had already been fixed
2459 by change 4.50/55 above.
2460
2461 If there are any other similar loopholes, the new check in host_aton()
2462 itself should stop them being exploited. The report I received stated that
2463 data on the command line could provoke the exploit when Exim was running as
2464 exim, but did not say which command line option was involved. All I could
2465 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2466 running as the user.
ea3a6f44 2467 CAN-2005-0021
85b87bc2
PH
2468
246961. There was a buffer overflow vulnerability in the SPA authentication code
2470 (which came originally from the Samba project). I have added a test to the
2471 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2472 CAN-2005-0022
b975ba52 2473
17ffcae7
PH
247462. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2475 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2476
d95f9fdb
PH
247763. The daemon start-up calls getloadavg() while still root for those OS that
2478 need the first call to be done as root, but it missed one case: when
2479 deliver_queue_load_max is set with deliver_drop_privilege. This is
2480 necessary for the benefit of the queue runner, because there is no re-exec
2481 when deliver_drop_privilege is set.
2482
86b8287f
PH
248364. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2484 This has been fixed.
2485
60dc5e56
PH
248665. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2487 was in use, was not putting the data itself into the right store pool;
2488 consequently, it could be overwritten for a subsequent message in the same
2489 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2490 the caching.)
2491
533244af
PH
249266. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2493
a5a28604
PH
249467. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2495 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2496 the function were treating the return as a boolean value, which happened to
2497 work because 0=false and not-0=true, but is not correct code.
2498
7e634d24
PH
249968. The host_aton() function was not handling scoped IPv6 addresses (those
2500 with, for example, "%eth0" on the end) correctly.
2501
3e11c26b
PH
250269. Fixed some compiler warnings in acl.c for the bitmaps specified with
2503 negated items (that is, ~something) in unsigned ints. Some compilers
2504 apparently mutter when there is no cast.
2505
6729cf78
PH
250670. If an address verification called from an ACL failed, and did not produce a
2507 user-specific message (i.e. there was only a "system" message), nothing was
2508 put in $acl_verify_message. In this situation, it now puts the system
2509 message there.
2510
00f00ca5
PH
251171. Change 4.23/11 added synchronization checking at the start of an SMTP
2512 session; change 4.31/43 added the unwanted input to the log line - except
2513 that it did not do this in the start of session case. It now does.
2514
c9bdd01c
PH
251572. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2516 This is wrong and can cause the other end to generate a synchronization
2517 error if it is another Exim or anything else that does the synchronization
2518 check. A QUIT command is no longer sent after a timeout.
2519
d43194df
PH
252073. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2521 during host lookups.
2522
fe5b5d0b
PH
252374. The defer_ok option of callout verification was not working if it was used
2524 when verifying addresses in header lines, that is, for this case:
2525
2526 verify = header_sender/callout=defer_ok
2527
76a2d7ba
PH
252875. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2529 those file descriptors could be used for SMTP connections. If anything
2530 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2531 could be sent to the SMTP client, causing chaos. The daemon now opens
2532 stdin, stdout, and stderr to /dev/null when it puts itself into the
2533 background.
2534
253576. Arrange for output from Perl's "warn" command to be written to Exim's main
2536 log by default. The user can override this with suitable Perl magic.
2537
04f7d5b9
PH
253877. The use of log_message on a "discard" ACL verb, which is supposed to add to
2539 the log message when discard triggers, was not working for the DATA ACL or
2540 for the non-SMTP ACL.
2541
bc60667e
PH
254278. Error message wording change in sieve.c.
2543
bb6e88ff
PH
254479. If smtp_accept_max_per_host was set, the number of connections could be
2545 restricted to fewer than expected, because the daemon was trying to set up
2546 a new connection before checking whether the processes handling previous
2547 connections had finished. The check for completed processes is now done
2548 earlier. On busy systems, this bug wouldn't be noticed because something
2549 else would have woken the daemon, and it would have reaped the completed
2550 process earlier.
2551
1e70f85b
PH
255280. If a message was submitted locally by a user whose login name contained one
2553 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2554 It caused a spool format error. I have fixed the spool reading code. A
2555 related problem was that the "from" clause in the Received: line became
2556 illegal because of the space(s). It is now covered by ${quote_local_part.
2557
255881. Included the latest eximstats from Steve (adds average sizes to HTML Top
2559 tables).
2560
4e01f9d6
PH
256182. Updated OS/Makefile-AIX as per message from Mike Meredith.
2562
1ee1cef2
PH
256383. Patch from Sieve maintainer to fix unterminated string problem in
2564 "vacation" handling.
2565
6e2b4ccc
PH
256684. Some minor changes to the Linux configuration files to help with other
2567 OS variants using glibc.
2568
8e669ac1
PH
256985. One more patch for Sieve to update vacation handling to latest spec.
2570
495ae4b0 2571
bbe902f0
PH
2572----------------------------------------------------
2573See the note above about the 4.44 and 4.50 releases.
2574----------------------------------------------------
2575
2576
2577Exim version 4.44
2578-----------------
2579
2580 1. Change 4.43/35 introduced a bug that caused file counts to be
2581 incorrectly computed when quota_filecount was set in an appendfile
2582 transport
2583
2584 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2585 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2586 place.
2587
2588 3. Give more explanation in the error message when the command for a transport
2589 filter fails to execute.
2590
2591 4. There are several places where Exim runs a non-Exim command in a
2592 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2593 was being done only for the command run by the queryprogram router. It is
2594 now done for all such subprocesses. The other cases are: ${run, transport
2595 filters, and the commands run by the lmtp and pipe transports.
2596
2597 5. Some older OS have a limit of 256 on the maximum number of file
2598 descriptors. Exim was using setrlimit() to set 1000 as a large value
2599 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2600 systems. I've change it so that if it can't get 1000, it tries for 256.
2601
2602 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2603 was an oversight, and furthermore, ever since the addition of extra
2604 controls (e.g. 4.43/32), the checks on when to allow different forms of
2605 "control" were broken. There should now be diagnostics for all cases when a
2606 control that does not make sense is encountered.
2607
2608 7. $recipients is now available in the predata ACL (oversight).
2609
2610 8. Tidy the search cache before the fork to do a delivery from a message
2611 received from the command line. Otherwise the child will trigger a lookup
2612 failure and thereby defer the delivery if it tries to use (for example) a
2613 cached ldap connection that the parent has called unbind on.
2614
2615 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2616 of $address_data from the recipient verification was clobbered by the
2617 sender verification.
2618
261910. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2620 was its contents. (It was OK if the option was not defined at all.)
2621
262211. A "Completed" log line is now written for messages that are removed from
2623 the spool by the -Mrm option.
2624
262512. $host_address is now set to the target address during the checking of
2626 ignore_target_hosts.
2627
262813. When checking ignore_target_hosts for an ipliteral router, no host name was
2629 being passed; this would have caused $sender_host_name to have been used if
2630 matching the list had actually called for a host name (not very likely,
2631 since this list is usually IP addresses). A host name is now passed as
2632 "[x.x.x.x]".
2633
263414. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2635 code that specifies a non-restarting handler (typically sigaction() in
2636 modern systems) in an attempt to fix a rare and obscure crash bug.
2637
263815. Narrowed the window for a race in the daemon that could cause it to ignore
2639 SIGCHLD signals. This is not a major problem, because they are used only to
2640 wake it up if nothing else does.
2641
264216. A malformed maildirsize file could cause Exim to calculate negative values
2643 for the mailbox size or file count. Odd effects could occur as a result.
2644 The maildirsize information is now recalculated if the size or filecount
2645 end up negative.
2646
264717. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2648 support for a long time. Removed HAVE_SYS_VFS_H.
2649
ea3a6f44 265018. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2651
265219. Allow an empty sender to be matched against a lookup in an address list.
2653 Previously the only cases considered were a regular expression, or an
2654 empty pattern.
2655
265620. Exim went into a mad DNS lookup loop when doing a callout where the
2657 host was specified on the transport, if the DNS lookup yielded more than
2658 one IP address.
2659
ea3a6f44
NM
266021. The RFC2047 encoding function was originally intended for short strings
2661 such as real names; it was not keeping to the 75-character limit for
2662 encoded words that the RFC imposes. It now respects the limit, and
2663 generates multiple encoded words if necessary. To be on the safe side, I
2664 have increased the buffer size for the ${rfc2047: expansion operator from
2665 1024 to 2048 bytes.
bbe902f0 2666
ea3a6f44
NM
266722. Failure to deliver a bounce message always caused it to be frozen, even if
2668 there was an errors_to setting on the router. The errors_to setting is now
2669 respected.
bbe902f0
PH
2670
267123. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2672 canonical form (fully expanded) before being placed in
2673 $sender_host_address.
2674
267524. Updated eximstats to version 1.33
2676
ea3a6f44
NM
267725. Include certificate and key file names in error message when GnuTLS fails
2678 to set them up, because the GnuTLS error message doesn't include the name
2679 of the failing file when there is a problem reading it.
bbe902f0
PH
2680
268126. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2682 As per change 25.
bbe902f0 2683
ea3a6f44
NM
268427. Reset the locale to "C" after calling embedded Perl, in case it was changed
2685 (this can affect the format of dates).
bbe902f0 2686
ea3a6f44
NM
268728. exim_tidydb, when checking for the continued existence of a message for
2688 which it has found a message-specific retry record, was not finding
2689 messages that were in split spool directories. Consequently, it was
2690 deleting retry records that should have stayed in existence.
bbe902f0
PH
2691
269229. eximstats updated to version 1.35
2693 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2694 1.35 - bugfix such that pie charts by volume are generated correctly
2695
ea3a6f44
NM
269630. The SPA authentication driver was not abandoning authentication and moving
2697 on to the next authenticator when an expansion was forced to fail,
2698 contradicting the general specification for all authenticators. Instead it
2699 was generating a temporary error. It now behaves as specified.
bbe902f0 2700
ea3a6f44
NM
270131. The default ordering of permitted cipher suites for GnuTLS was pessimal
2702 (the order specifies the preference for clients). The order is now AES256,
2703 AES128, 3DES, ARCFOUR128.
bbe902f0 2704
ea3a6f44
NM
270531. Small patch to Sieve code - explicitly set From: when generating an
2706 autoreply.
bbe902f0 2707
ea3a6f44
NM
270832. Exim crashed if a remote delivery caused a very long error message to be
2709 recorded - for instance if somebody sent an entire SpamAssassin report back
2710 as a large number of 550 error lines. This bug was coincidentally fixed by
2711 increasing the size of one of Exim's internal buffers (big_buffer) that
2712 happened as part of the Exiscan merge. However, to be on the safe side, I
2713 have made the code more robust (and fixed the comments that describe what
2714 is going on).
bbe902f0 2715
ea3a6f44
NM
271633. Some experimental protocols are using DNS PTR records for new purposes. The
2717 keys for these records are domain names, not reversed IP addresses. The
2718 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2719 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2720 CAN-2005-0021
2721
ea3a6f44
NM
272234. The host_aton() function is supposed to be passed a string that is known
2723 to be a valid IP address. However, in the case of IPv6 addresses, it was
2724 not checking this. This is a hostage to fortune. Exim now panics and dies
2725 if the condition is not met. A case was found where this could be provoked
2726 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2727 components; fortuitously, this particular loophole had already been fixed
2728 by change 4.50/55 or 4.44/33 above.
2729
2730 If there are any other similar loopholes, the new check in host_aton()
2731 itself should stop them being exploited. The report I received stated that
2732 data on the command line could provoke the exploit when Exim was running as
2733 exim, but did not say which command line option was involved. All I could
2734 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2735 running as the user.
bbe902f0
PH
2736 CAN-2005-0021
2737
ea3a6f44
NM
273835. There was a buffer overflow vulnerability in the SPA authentication code
2739 (which came originally from the Samba project). I have added a test to the
2740 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2741 CAN-2005-0022
2742
ea3a6f44
NM
274336. The daemon start-up calls getloadavg() while still root for those OS that
2744 need the first call to be done as root, but it missed one case: when
2745 deliver_queue_load_max is set with deliver_drop_privilege. This is
2746 necessary for the benefit of the queue runner, because there is no re-exec
2747 when deliver_drop_privilege is set.
bbe902f0 2748
ea3a6f44
NM
274937. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2750 was in use, was not putting the data itself into the right store pool;
2751 consequently, it could be overwritten for a subsequent message in the same
2752 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2753 the caching.)
bbe902f0 2754
ea3a6f44
NM
275538. Sometimes the final signoff response after QUIT could fail to get
2756 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2757 < 0 before doing a fflush(). This bug looks as though it goes back to the
2758 introduction of TLS in release 3.20, but "sometimes" must have been rare
2759 because the tests only now provoked it.
bbe902f0
PH
2760
2761
495ae4b0
PH
2762Exim version 4.43
2763-----------------
2764
2765 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2766 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2767 Now it returns an integer. A number of calls were still expecting a T/F
2768 return. Fortuitously, in all cases, the tests worked in OK situations,
2769 which is the norm. However, things would have gone wrong on any write
2770 failures on the smtp file descriptor. This function is used when sending
2771 messages over SMTP and also when doing verify callouts.
2772
2773 2. When Exim is called to do synchronous delivery of a locally submitted
2774 message (the -odf or -odi options), it no longer closes stderr before doing
2775 the delivery.
2776
2777 3. Implemented the mua_wrapper option.
2778
2779 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2780
2781 5. Implemented the functions header_remove(), header_testname(),
2782 header_add_at_position(), and receive_remove_recipient(), and exported them
2783 to local_scan().
2784
2785 6. If an ACL "warn" statement specified the addition of headers, Exim already
2786 inserted X-ACL-Warn: at the start if there was no header name. However, it
2787 was not making this test for the second and subsequent header lines if
2788 there were newlines in the string. This meant that an invalid header could
2789 be inserted if Exim was badly configured.
2790
2791 7. Allow an ACL "warn" statement to add header lines at the start or after all
2792 the Received: headers, as well as at the end.
2793
2794 8. Added the rcpt_4xx retry error code.
2795
2796 9. Added postmaster_mailfrom=xxx to callout verification option.
2797
279810. Added mailfrom=xxxx to the callout verification option, for verify=
2799 header_sender only.
2800
280111. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2802 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2803
280412. Inserted some casts to stop certain compilers warning when using pointer
2805 differences as field lengths or precisions in printf-type calls (mostly
2806 affecting debugging statements).
2807
280813. Added optional readline() support for -be (dynamically loaded).
2809
281014. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2811 same clock tick as a message's arrival, so that its received time was the
2812 same as the "first fail" time on the retry record, and that message
2813 remained on the queue past the ultimate address timeout, every queue runner
2814 would try a delivery (because it was past the ultimate address timeout) but
2815 after another failure, the ultimate address timeout, which should have then
2816 bounced the address, did not kick in. This was a "< instead of <=" error;
2817 in most cases the first failure would have been in the next clock tick
2818 after the received time, and all would be well.
2819
282015. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2821 being recognized when the domain list was tested by the match_domain
2822 condition in an expansion string.
2823
282416. Added the ${str2b64: operator.
2825
282617. Exim was always calling setrlimit() to set a large limit for the number of
2827 processes, without checking whether the existing limit was already
2828 adequate. (It did check for the limit on file descriptors.) Furthermore,
2829 errors from getrlimit() and setrlimit() were being ignored. Now they are
2830 logged to the main and panic logs, but Exim does carry on, to try to do its
2831 job under whatever limits there are.
2832
283318. Imported PCRE 5.0.
2834
283519. Trivial typo in log message " temporarily refused connection" (the leading
2836 space).
2837
283820. If the log selector return_path_on_delivery was set and an address was
2839 redirected to /dev/null, the delivery process crashed because it assumed
2840 that a return path would always be set for a "successful" delivery. In this
2841 case, the whole delivery is bypassed as an optimization, and therefore no
2842 return path is set.
2843
284421. Internal re-arrangement: the function for sending a challenge and reading
2845 a response while authentication was assuming a zero-terminated challenge
2846 string. It's now changed to take a pointer and a length, to allow for
2847 binary data in such strings.
2848
284922. Added the cyrus_sasl authenticator (code supplied by MBM).
2850
285123. Exim was not respecting finduser_retries when seeking the login of the
2852 uid under which it was called; it was always trying 10 times. (The default
2853 setting of finduser_retries is zero.) Also, it was sleeping after the final
2854 failure, which is pointless.
2855
285624. Implemented tls_on_connect_ports.
2857
285825. Implemented acl_smtp_predata.
2859
286026. If the domain in control=submission is set empty, Exim assumes that the
2861 authenticated id is a complete email address when it generates From: or
2862 Sender: header lines.
2863
286427. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2865 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2866 chown and chgrp in /bin and hostname in /usr/bin.
2867
286828. Exim was keeping the "process log" file open after each use, just as it
2869 does for the main log. This opens the possibility of it remaining open for
2870 long periods when the USR1 signal hits a daemon. Occasional processlog
2871 errors were reported, that could have been caused by this. Anyway, it seems
2872 much more sensible not to leave this file open at all, so that is what now
2873 happens.
2874
287529. The long-running daemon process does not normally write to the log once it
2876 has entered its main loop, and it closes the log before doing so. This is
2877 so that log files can straightforwardly be renamed and moved. However,
2878 there are a couple of unusual error situations where the daemon does write
2879 log entries, and I had neglected to close the log afterwards.
2880
288130. The text of an SMTP error response that was received during a remote
2882 delivery was being truncated at 512 bytes. This is too short for some of
2883 the long messages that one sometimes sees. I've increased the limit to
2884 1024.
2885
288631. It is now possible to make retry rules that apply only when a message has a
2887 specific sender, in particular, an empty sender.
2888
288932. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2890 it possible to be selective about when SMTP synchronization is enforced.
2891
289233. Added "control = caseful_local_part" and "control = "caselower_local_part".
2893
289432. Implemented hosts_connection_nolog.
2895
289633. Added an ACL for QUIT.
2897
289834. Setting "delay_warning=" to disable warnings was not working; it gave a
2899 syntax error.
2900
290135. Added mailbox_size and mailbox_filecount to appendfile.
2902
290336. Added control = no_multiline_responses to ACLs.
2904
290537. There was a bug in the logic of the code that waits for the clock to tick
2906 in the case where the clock went backwards by a substantial amount such
2907 that the microsecond fraction of "now" was more than the microsecond
2908 fraction of "then" (but the whole seconds number was less).
2909
291038. Added support for the libradius Radius client library this is found on
2911 FreeBSD (previously only the radiusclient library was supported).
2912
2913
2914Exim version 4.42
2915-----------------
2916
2917 1. When certain lookups returned multiple values in the form name=value, the
2918 quoting of the values was not always being done properly. Specifically:
2919 (a) If the value started with a double quote, but contained no whitespace,
2920 it was not quoted.
2921 (b) If the value contained whitespace other than a space character (i.e.
2922 tabs or newlines or carriage returns) it was not quoted.
2923 This fix has been applied to the mysql and pgsql lookups by writing a
2924 separate quoting function and calling it from the lookup code. The fix
2925 should probably also be applied to nisplus, ibase and oracle lookups, but
2926 since I cannot test any of those, I have not disturbed their existing code.
2927
2928 2. A hit in the callout cache for a specific address caused a log line with no
2929 reason for rejecting RCPT. Now it says "Previous (cached) callout
2930 verification failure".
2931
2932 3. There was an off-by-one bug in the queryprogram router. An over-long
2933 return line was truncated at 256 instead of 255 characters, thereby
2934 overflowing its buffer with the terminating zero. As well as fixing this, I
2935 have increased the buffer size to 1024 (and made a note to document this).
2936
2937 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2938 when Exim is waiting for an SMTP response from a remote server, Exim
2939 restarts its select() call on the socket, thereby resetting its timeout.
2940 This is not a problem when such interrupts are rare. Somebody set up a cron
2941 job to run exiwhat every 2 minutes, which is less than the normal select()
2942 timeout (5 or 10 minutes). This meant that the select() timeout never
2943 kicked in because it was always reset. I have fixed this by comparing the
2944 time when an interrupt arrives with the time at the start of the first call
2945 to select(). If more time than the timeout has elapsed, the interrupt is
2946 treated as a timeout.
2947
2948 5. Some internal re-factoring in preparation for the addition of Sieve
2949 extensions (by MH). In particular, the "personal" test is moved to a
2950 separate function, and given an option for scanning Cc: and Bcc: (which is
2951 not set for Exim filters).
2952
2953 6. When Exim created an email address using the login of the caller as the
2954 local part (e.g. when creating a From: or Sender: header line), it was not
2955 quoting the local part when it contained special characters such as @.
2956
2957 7. Installed new OpenBSD configuration files.
2958
2959 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2960 try to make them clearer.
2961
2962 9. Callout options, other than the timeout value, were being ignored when
2963 verifying sender addresses in header lines. For example, when using
2964
2965 verify = header_sender/callout=no_cache
2966
2967 the cache was (incorrectly) being used.
2968
296910. Added a missing instance of ${EXE} to the exim_install script; this affects
2970 only the Cygwin environment.
2971
297211. When return_path_on_delivery was set as a log selector, if different remote
2973 addresses in the same message used different return paths and parallel
2974 remote delivery occurred, the wrong values would sometimes be logged.
2975 (Whenever a remote delivery process finished, the return path value from
2976 the most recently started remote delivery process was logged.)
2977
297812. RFC 3848 specifies standard names for the "with" phrase in Received: header
2979 lines when AUTH and/or TLS are in use. This is the "received protocol"
2980 field. Exim used to use "asmtp" for authenticated SMTP, without any
2981 indication (in the protocol name) for TLS use. Now it follows the RFC and
2982 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2983 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2984 names appear in log lines as well as in Received: header lines.
2985
298613. Installed MH's patches for Sieve to add the "copy" and "vacation"
2987 extensions, and comparison tests, and to fix some bugs.
2988
298914. Changes to the "personal" filter test:
2990
2991 (1) The test was buggy in that it was just doing the equivalent of
2992 "contains" tests on header lines. For example, if a user's address was
2993 anne@some.where, the "personal" test would incorrectly be true for
2994
2995 To: susanne@some.where
2996
2997 This test is now done by extracting each address from the header in turn,
2998 and checking the entire address. Other tests that are part of "personal"
2999 are now done using regular expressions (for example, to check local parts
3000 of addresses in From: header lines).
3001
3002 (2) The list of non-personal local parts in From: addresses has been
3003 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3004 taken from the Sieve specification recommendations.
3005
3006 (3) If the message contains any header line starting with "List-" it is
3007 treated as non-personal.
3008
3009 (4) The test for "circular" in the Subject: header line has been removed
3010 because it now seems ill-conceived.
3011
301215. Minor typos in src/EDITME comments corrected.
3013
301416. Installed latest exipick from John Jetmore.
3015
301617. If headers_add on a router specified a text string that was too long for
3017 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3018 of string_sprintf() is now avoided.
3019
302018. $message_body_size was not set (it was always zero) when running the DATA
3021 ACL and the local_scan() function.
3022
302319. For the "mail" command in an Exim filter, no default was being set for
3024 the once_repeat time, causing a random time value to be used if "once" was
3025 specified. (If the value happened to be <= 0, no repeat happened.) The
3026 default is now 0s, meaning "never repeat". The "vacation" command was OK
3027 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3028 (I found it when inspecting the code).
3029
303020. There is now an overall timeout for performing a callout verification. It
3031 defaults to 4 times the callout timeout, which applies to individual SMTP
3032 commands during the callout. The overall timeout applies when there is more
3033 than one host that can be tried. The timeout is checked before trying the
3034 next host. This prevents very long delays if there are a large number of
3035 hosts and all are timing out (e.g. when the network connections are timing
3036 out). The value of the overall timeout can be changed by specifying an
3037 additional sub-option for "callout", called "maxwait". For example:
3038
3039 verify = sender/callout=5s,maxwait=20s
3040
304121. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3042 to the end before writing, but this should make it even safer).
3043
304422. Exim was forgetting that it had advertised PIPELINING for the second and
3045 subsequent messages on an SMTP connection. It was also not resetting its
3046 memory on STARTTLS and an internal HELO.
3047
304823. When Exim logs an SMTP synchronization error within a session, it now
3049 records whether PIPELINING has been advertised or not.
3050
305124. Added 3 instances of "(long int)" casts to time_t variables that were being
3052 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3053 rather than long int.
3054
305525. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3056
305726. Added the never_mail option to autoreply.
3058
3059
3060Exim version 4.41
3061-----------------
3062
3063 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3064 crash if the getsockname() call failed; this can happen if a connection is
3065 closed very soon after it is established. The problem was simply in the
3066 order in which certain operations were done, causing Exim to try to write
3067 to the SMTP stream before it had set up the file descriptor. The bug has
3068 been fixed by making things happen in the correct order.
3069
3070
3071Exim version 4.40
3072-----------------
3073
3074 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3075 before the connection was closed, thus losing the rejection response.
3076
3077 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3078 some early Solaris releases, but causes trouble in current releases where
3079 socklen_t is defined.
3080
3081 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3082 always exist.
3083
3084 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3085 configured.
3086
3087 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3088 that releasing the top of it at the end releases what was used for sub-
3089 expansions (unless the block got too big). However, discard this block if
3090 the first thing is a variable or header, so that we can use its block when
3091 it is dynamic (useful for very large $message_headers, for example).
3092
3093 6. Lookups now cache *every* query, not just the most recent. A new, separate
3094 store pool is used for this. It can be recovered when all lookup caches are
3095 flushed. Lookups now release memory at the end of their result strings.
3096 This has involved some general refactoring of the lookup sources.
3097
3098 7. Some code has been added to the store_xxx() functions to reduce the amount
3099 of flapping under certain conditions.
3100
3101 8. log_incoming_interface used to affect only the <= reception log lines. Now
3102 it causes the local interface and port to be added to several more SMTP log
3103 lines, for example "SMTP connection from", and rejection lines.
3104
3105 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3106
310710. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3108
310911. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3110 could be overwritten at the end of the current message (or the start of a
3111 new message if it was set in a HELO ACL). The value is now preserved for
3112 the duration of the SMTP connection.
3113
311412. If a transport had a headers_rewrite setting, and a matching header line
3115 contained an unqualified address, that address was qualified, even if it
3116 did not match any rewriting rules. The underlying bug was that the values
3117 of the flags that permit the existence of unqualified sender and recipient
3118 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3119 non-local messages, and by -bnq for local messages) were not being
3120 preserved with the message after it was received.
3121
312213. When Exim was logging an SMTP synchronization error, it could sometimes log
3123 "next input=" as part of the text comprising the host identity instead of
3124 the correct text. The code was using the same buffer for two different
3125 strings. However, depending on which order the printing function evaluated
3126 its arguments, the bug did not always show up. Under Linux, for example, my
3127 test suite worked just fine.
3128
312914. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3130 doesn't work with some older versions of Perl. It has been changed to "my",
3131 which in any case is probably the better facility to use.
3132
313315. A really picky compiler found some instances of statements for creating
3134 error messages that either had too many or two few arguments for the format
3135 string.
3136
313716. The size of the buffer for calls to the DNS resolver has been increased
3138 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3139 for addresses that have a lot of PTR records. This alleviates a problem; it
3140 does not fully solve it.
3141
314217. A dnsdb lookup for PTR records that receives more data than will fit in the
3143 buffer now truncates the list and logs the incident, which is the same
3144 action as happens when Exim is looking up a host name and its aliases.
3145 Previously in this situation something unpredictable would happen;
3146 sometimes it was "internal error: store_reset failed".
3147
314818. If a server dropped the connection unexpectedly when an Exim client was
3149 using GnuTLS and trying to read a response, the client delivery process
3150 crashed while trying to generate an error log message.
3151
315219. If a "warn" verb in an ACL added multiple headers to a message in a single
3153 string, for example:
3154
3155 warn message = H1: something\nH2: something
3156
3157 the text was added as a single header line from Exim's point of view
3158 though it ended up OK in the delivered message. However, searching for the
3159 second and subsequent header lines using $h_h2: did not work. This has been
3160 fixed. Similarly, if a system filter added multiple headers in this way,
3161 the routers could not see them.
3162
316320. Expanded the error message when iplsearch is called with an invalid key to
3164 suggest using net-iplsearch in a host list.
3165
316621. When running tests using -bh, any delays imposed by "delay" modifiers in
3167 ACLs are no longer actually imposed (and a message to that effect is
3168 output).
3169
317022. If a "gecos" field in a passwd entry contained escaped characters, in
3171 particular, if it contained a \" sequence, Exim got it wrong when building
3172 a From: or a Sender: header from that name. A second bug also caused
3173 incorrect handling when an unquoted " was present following a character
3174 that needed quoting.
3175
317623. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3177 was not being matched caselessly.
3178
317924. Arranged for all hyphens in the exim.8 source to be escaped with
3180 backslashes.
3181
318225. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3183 properly. Recipient callout cache records were still being keyed to include
3184 the sender, even when use_sender was set false. This led to far more
3185 callouts that were necessary. The sender is no longer included in the key
3186 when use_sender is false.
3187
318826. Added "control = submission" modifier to ACLs.
3189
319027. Added the ${base62d: operator to decode base 62 numbers.
3191
319228. dnsdb lookups can now access SRV records.
3193
319429. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3195 the configuration file.
3196
319730. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3198 (-v) mode. This makes the output for a verbose queue run more intelligible.
3199
320031. Added a use_postmaster feature to recipient callouts.
3201
320232. Added the $body_zerocount variable, containing the number of binary zero
3203 bytes in the message body.
3204
320533. The time of last modification of the "new" subdirectory is now used as the
3206 "mailbox time last read" when there is a quota error for a maildir
3207 delivery.
3208
320934. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3210
321135. Added +ignore_unknown as a special item in host lists.
3212
321336. Code for decoding IPv6 addresses in host lists is now included, even if
3214 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3215 address was recognized as an IP address, but was then not correctly decoded
3216 into binary, causing unexpected and incorrect effects when compared with
3217 another IP address.
3218
3219
3220Exim version 4.34
3221-----------------
3222
3223 1. Very minor rewording of debugging text in manualroute to say "list of
3224 hosts" instead of "hostlist".
3225
3226 2. If verify=header_syntax was set, and a header line with an unqualified
3227 address (no domain) and a large number of spaces between the end of the
3228 name and the colon was received, the reception process suffered a buffer
3229 overflow, and (when I tested it) crashed. This was caused by some obsolete
3230 code that should have been removed. The fix is to remove it!
3231
3232 3. When running in the test harness, delay a bit after writing a bounce
3233 message to get a bit more predictability in the log output.
3234
3235 4. Added a call to search_tidyup() just before forking a reception process. In
3236 theory, someone could use a lookup in the expansion of smtp_accept_max_
3237 per_host which, without the tidyup, could leave open a database connection.
3238
3239 5. Added the variables $recipient_data and $sender_data which get set from a
3240 lookup success in an ACL "recipients" or "senders" condition, or a router
3241 "senders" option, similar to $domain_data and $local_part_data.
3242
3243 6. Moved the writing of debug_print from before to after the "senders" test
3244 for routers.
3245
3246 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3247 problems for message scanning, either using a data ACL, or using
3248 local_scan() because the Received: header was not generated till after they
3249 were called (in order to set the time as the time of reception completion).
3250 I have revised the way this works. The header is now generated after the
3251 body is received, but before the ACL or local_scan() are called. After they
3252 are run, the timestamp in the header is updated.
3253
3254
3255Exim version 4.33
3256-----------------
3257
3258 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3259 before starting a queue runner without re-exec. This happened only when
3260 deliver_drop_privilege was set or when the Exim user was set to root. The
3261 effect of the bug was that timeouts during subsequent deliveries caused
3262 crashes instead of being properly handled. The handler is now left at its
3263 default (and expected) setting.
3264
3265 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3266 message, again when deliver_drop_privilege is set or Exim is run as root.
3267 The bug described in (1) was not present in this case, but the tidying up
3268 of the other signals was missing. I have made the two cases consistent.
3269
3270 3. The ignore_target_hosts setting on a manualroute router was being ignored
3271 for hosts that were looked up using the /MX notation.
3272
3273 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3274 in domain lists.
3275
3276 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3277 operated on the sender address. After changing the $sender_address to <>
3278 for the sender address verify, Exim was re-instated it as the original
3279 (before rewriting) address, but remembering that it had rewritten it, so it
3280 wasn't rewriting it again. This bug also had the effect of breaking the
3281 sender address verification caching when the sender address was rewritten.
3282
3283 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3284 This has been changed so that if the ip literal address matches
3285 ignore_target_hosts, the router declines.
3286
3287 7. Added expansion conditions match_domain, match_address, and match_local_
3288 part (NOT match_host).
3289
3290 8. The placeholder for the Received: header didn't have a length field set.
3291
3292 9. Added code to Exim itself and to exim_lock to test for a specific race
3293 condition that could lead to file corruption when using MBX delivery. The
3294 issue is with the lockfile that is created in /tmp. If this file is removed
3295 after a process has opened it but before that process has acquired a lock,
3296 there is the potential for a second process to recreate the file and also
3297 acquire a lock. This could lead to two Exim processes writing to the file
3298 at the same time. The added code performs the same test as UW imapd; it
3299 checks after acquiring the lock that its file descriptor still refers to
3300 the same named file.
3301
330210. The buffer for building added header lines was of fixed size, 8192 bytes.
3303 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3304 when Exim is built.
3305
330611. Added the smtp_active_hostname option. If used, this will typically be made
3307 to depend on the incoming interface address. Because $interface_address is
3308 not set up until the daemon has forked a reception process, error responses
3309 that can happen earlier (such as "too many connections") no longer contain
3310 a host name.
3311
331212. If an expansion in a condition on a "warn" statement fails because a lookup
3313 defers, the "warn" statement is abandoned, and the next ACL statement is
3314 processed. Previously this caused the whole ACL to be aborted.
3315
331613. Added the iplsearch lookup type.
3317
331814. Added ident_timeout as a log selector.
3319
332015. Added tls_certificate_verified as a log selector.
3321
332216. Added a global option tls_require_ciphers (compare the smtp transport
3323 option of the same name). This controls incoming TLS connections.
3324
332517. I finally figured out how to make tls_require_ciphers do a similar thing
3326 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3327 before starting the TLS session.
3328
332918. Tabs are now shown as \t in -bP output.
3330
333119. If the log selector return_path_on_delivery was set, Exim crashed when
3332 bouncing a message because it had too many Received: header lines.
3333
333420. If two routers both had headers_remove settings, and the first one included
3335 a superfluous trailing colon, the final name in the first list and the
3336 first name in the second list were incorrectly joined into one item (with a
3337 colon in the middle).
3338
3339
3340Exim version 4.32
3341-----------------
3342
3343 1. Added -C and -D options to the exinext utility, mainly to make it easier
3344 to include in the automated testing, but these could be helpful when
3345 multiple configurations are in use.
3346
3347 2. The exinext utility was not formatting the output nicely when there was
3348 an alternate port involved in the retry record key, nor when there was a
3349 message id as well (for retries that were specific to a specific message
3350 and a specific host). It was also confused by IPv6 addresses, because of
3351 the additional colons they contain. I have fixed the IPv4 problem, and
3352 patched it up to do a reasonable job for IPv6.
3353
3354 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3355 delivery, the log line now contains "pipelined" if PIPELINING was used.
3356
3357 4. An SMTP transport process used to panic and die if the bind() call to set
3358 an explicit outgoing interface failed. This has been changed; it is now
3359 treated in the same way as a connect() failure.
3360
3361 5. A reference to $sender_host_name in the part of a conditional expansion
3362 that was being skipped was still causing a DNS lookup. This no longer
3363 occurs.
3364
3365 6. The def: expansion condition was not recognizing references to header lines
3366 that used bh_ and bheader_.
3367
3368 7. Added the _cache feature to named lists.
3369
3370 8. The code for checking quota_filecount in the appendfile transport was
3371 allowing one more file than it should have been.
3372
3373 9. For compatibility with Sendmail, the command line option
3374
3375 -prval:sval
3376
3377 is equivalent to
3378
3379 -oMr rval -oMs sval
3380
3381 and sets the incoming protocol and host name (for trusted callers). The
3382 host name and its colon can be omitted when only the protocol is to be set.
3383 Note the Exim already has two private options, -pd and -ps, that refer to
3384 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3385 "s", but I don't think that's a major issue.
3386
338710. A number of refactoring changes to the code, none of which should affect
3388 Exim's behaviour:
3389
3390 (a) The number of logging options was getting close to filling up the
3391 32-bit word that was used as a bit map. I have split them into two classes:
3392 those that are passed in the argument to log_write(), and those that are
3393 only ever tested independently outside of that function. These are now in
3394 separate 32-bit words, so there is plenty of room for expansion again.
3395 There is no change in the user interface or the logging behaviour.
3396
3397 (b) When building, for example, log lines, the code previously used a
3398 macro that called string_cat() twice, in order to add two strings. This is
3399 not really sufficiently general. Furthermore, there was one instance where
3400 it was actually wrong because one of the argument was used twice, and in
3401 one call a function was used. (As it happened, calling the function twice
3402 did not affect the overall behaviour.) The macro has been replaced by a
3403 function that can join an arbitrary number of extra strings onto a growing
3404 string.
3405
3406 (c) The code for expansion conditions now uses a table and a binary chop
3407 instead of a serial search (which was left over from when there were very
3408 few conditions). Also, it now recognizes conditions like "pam" even when
3409 the relevant support is not compiled in: a suitably worded error message is
3410 given if an attempt is made to use such a condition.
3411
341211. Added ${time_interval:xxxxx}.
3413
341412. A bug was causing one of the ddress fields not to be passed back correctly
3415 from remote delivery subprocesses. The field in question was not being
3416 subsequently used, so this caused to problems in practice.
3417
341813. Added new log selectors queue_time and deliver_time.
3419
342014. Might have fixed a bug in maildirsizefile handling that threw up
3421 "unexpected character" debug warnings, and recalculated the data
3422 unnecessarily. In any case, I expanded the warning message to give more
3423 information.
3424
342515. Added the message "Restricted characters in address" to the statements in
3426 the default ACL that block characters like @ and % in local parts.
3427
342816. Change 71 for release 4.31 proved to be much less benign that I imagined.
3429 Three changes have been made:
3430
3431 (a) There was a serious bug; a negative response to MAIL caused the whole
3432 recipient domain to be cached as invalid, thereby blocking all messages
3433 to all local parts at the same domain, from all senders. This bug has
3434 been fixed. The domain is no longer cached after a negative response to
3435 MAIL if the sender used is not empty.
3436
3437 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3438 been restored.
3439
3440 (c) A new callout option, "use_sender" has been added for people who want
3441 the modified behaviour.
3442
3443
3444Exim version 4.31
3445-----------------
3446
3447 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3448 Larry Rosenman.
3449
3450 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3451 indeed breaks things for older releases.
3452
3453 3. Added additional logging to the case where there is a problem reading data
3454 from a filter that is running in a subprocess using a pipe, in order to
3455 try to track down a specific problem.
3456
3457 4. Testing facility fudge: when running in the test harness and attempting
3458 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3459 getting "No route to host". Convert this to a timeout.
3460
3461 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3462 warning.
3463
3464 6. Some OS don't have socklen_t but use size_t instead. This affects the
3465 fifth argument of getsockopt() amongst other things. This is now
3466 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3467 can be set for individual OS. I have set it for SunOS5, OSF1, and
3468 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3469 some earlier ones do not.
3470
3471 7. Change 4.30/15 was not doing the test caselessly.
3472
3473 8. The standard form for an IPv6 address literal was being rejected by address
3474 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3475 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3476 this, as well as the form without the "IPv6" on the front (but only when
3477 address literals are enabled, of course).
3478
3479 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3480
348110. Exim crashed if a message with an empty sender address specified by -f
3482 encountered a router with an errors_to setting. This could be provoked only
3483 by a command such as
3484
3485 exim -f "" ...
3486
3487 where an empty string was supplied; "<>" did not hit this bug.
3488
348911. Installed PCRE release 4.5.
3490
349112. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3492 remained set. It is now erased.
3493
349413. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3495 times from message ids (which are base 36 rather than the normal 62).
3496
349714. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3498 were being counted as actual protocol errors, and logged if the log
3499 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3500 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3501 and DATA following a set of rejected RCPTs do not count as protocol errors.
3502 In other words, Exim assumes they were pipelined, though this may not
3503 actually be the case. Of course, in all cases the client gets an
3504 appropriate error code.
3505
350615. If a lookup fails in an ACL condition, a message about the failure may
3507 be available; it is used if testing the ACL cannot continue, because most
3508 such messages specify what the cause of the deferral is. However, some
3509 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3510 that caused an old message to be retained and used if a later statement
3511 caused a defer, replacing the real cause of the deferral.
3512
351316. If an IP address had so many PTR records that the DNS lookup buffer
3514 was not large enough to hold them, Exim could crash while trying to process
3515 the truncated data. It now detects and logs this case.
3516
351717. Further to 4.21/58, another change has been made: if (and only if) the
3518 first line of a message (the first header line) ends with CRLF, a bare LF
3519 in a subsequent header line has a space inserted after it, so as not to
3520 terminate the header.
3521
352218. Refactoring: tidied an ugly bit of code in appendfile that copied data
3523 unnecessarily, used atoi() instead of strtol(), and didn't check the
3524 termination when getting file sizes from file names by regex.
3525
352619. Completely re-implemented the support for maildirsize files, in the light
3527 of a number of problems with the previous contributed implementation
3528 (4.30/29). In particular:
3529
3530 . If the quota is zero, the maildirsize file is maintained, but no quota is
3531 imposed.
3532
3533 . If the maildir directory does not exist, it is created before any attempt
3534 to write a maildirsize file.
3535
3536 . The quota value in the file is just a cache; if the quota is changed in
3537 the transport, the new value overrides.
3538
3539 . A regular expression is available for excluding directories from the
3540 count.
3541
354220. The autoreply transport checks the characters in options that define the
3543 message's headers; it allows continued headers, but it was checking with
3544 isspace() after an embedded newline instead of explicitly looking for a
3545 space or a tab.
3546
354721. If all the "regular" hosts to which an address was routed had passed their
3548 expiry times, and had not reached their retry times, the address was
3549 bounced, even if fallback hosts were defined. Now Exim should go on to try
3550 the fallback hosts.
3551
355222. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3553 equivalent code in the SMTP transport. Some hosts send humungous responses
3554 to HELO/EHLO, more than 1024 it seems.
3555
355623. Refactoring: code in filter.c used (void *) for "any old type" but this
3557 gives compiler warnings in some environments. I've now done it "properly",
3558 using a union.
3559
356024. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3561 (because of problems with the built-in one) was declared to return uschar *
3562 instead of char *, causing compiler failure.
3563
356425. Fixed a file descriptor leak when processing alias/forward files.
3565
356626. Fixed a minor format string issue in dbfn.c.
3567
3568