Add the NOTQUIT ACL.
[exim.git] / doc / doc-txt / ChangeLog
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8f128379 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.523 2007/08/22 10:10:23 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
64f2600a
PH
74PH/13 Installed PCRE version 7.2. This needed some changes because of the new
75 way in which PCRE > 7.0 is built.
76
8669f003
PH
77PH/14 Implemented queue_only_load_latch.
78
a4dc33a8
PH
79PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
80 MAIL command. The effect was to mangle the value on 64-bit systems.
81
d6a60c0f
PH
82PH/16 Another patch from the Sieve maintainer.
83
8f128379
PH
84PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
85
d6a60c0f 86
eb4c0de6 87
b4ed4da0
PH
88Exim version 4.67
89-----------------
90
22ad45c9
MH
91MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
92 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
93 Jan Srzednicki.
94
b4ed4da0
PH
95PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
96 issue a MAIL command.
97
431b7361
PH
98PH/02 In an ACL statement such as
99
100 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
101
102 if a client was not listed at all, or was listed with a value other than
103 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
104 the condition was not true (as it should be), so access was not denied.
105 The bug was that the ! inversion was incorrectly passed on to the second
106 item. This has been fixed.
107
108PH/03 Added additional dnslists conditions == and =& which are different from
109 = and & when the dns lookup returns more than one IP address.
110
83da1223
PH
111PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
112 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
113
54fc8428
PH
114PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
115 FSYNC, which compiles an option called disable_fsync that allows for
116 bypassing fsync(). The documentation is heavily laced with warnings.
117
34c5e8dd
SC
118SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
119
bbe15da8
PH
120PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
121 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
122 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
123 including adding "make clean"; (3) Added -fPIC when compiling the test
124 dynamically loaded module, to get rid of a warning.
125
0e8a9471
MH
126MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
127 message fails, move_frozen_messages = true and ignore_bounce_errors_after
128 = 0s. The bug is otherwise harmless.
129
f0872424
PH
130PH/07 There was a bug in the dovecot authenticator such that the value of
131 $auth1 could be overwritten, and so not correctly preserved, after a
132 successful authentication. This usually meant that the value preserved by
133 the server_setid option was incorrect.
134
b01dd148
PH
135PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
136
6bf342e1
PH
137PH/09 Installed PCRE release 7.0.
138
273f34d0
PH
139PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
140 run for batched SMTP input. It is now run at the start of every message
141 in the batch. While fixing this I discovered that the process information
142 (output by running exiwhat) was not always getting set for -bs and -bS
143 input. This is fixed, and it now also says "batched" for BSMTP.
144
cf8b11a5
PH
145PH/11 Added control=no_pipelining.
146
41c7c167
PH
147PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
148 patch, slightly modified), and move the expansion of helo_data till after
149 the connection is made in the smtp transport (so it can use these
150 values).
151
9c57cbc0
PH
152PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
153
f3f065bb
PH
154PH/14 Added log_selector = +pid.
155
047bdd8c
PH
156PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
157
0ce9abe6
PH
158PH/16 Add ${if forany and ${if forall.
159
0e22dfd1
PH
160PH/17 Added dsn_from option to vary the From: line in DSNs.
161
4c590bd1
PH
162PH/18 Flush SMTP output before performing a callout, unless control =
163 no_callout_flush is set.
164
09945f1e
PH
165PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
166 was true (the default) a successful delivery failed to delete the retry
167 item, thus causing premature timeout of the address. The bug is now
168 fixed.
169
c51b8e75
PH
170PH/20 Added hosts_avoid_pipelining to the smtp transport.
171
e28326d8
PH
172PH/21 Long custom messages for fakedefer and fakereject are now split up
173 into multiline reponses in the same way that messages for "deny" and
174 other ACL rejections are.
175
75b1493f
PH
176PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
177 with slight modification.
178
7c5214ec
PH
179PH/23 Applied sieve patches from the maintainer "tracking the latest notify
180 draft, changing the syntax and factoring some duplicate code".
181
4311097e
PH
182PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
183 for deliveries of the second and subsequent messages over the same SMTP
184 connection.
185
29f89cad
PH
186PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
187 ${reduce, with only minor "tidies".
188
5e687460
SC
189SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
190
c3611384
PH
191PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
192 expansion side effects.
193
5a11a7b4
PH
194PH/27 When a message times out after an over-quota error from an Exim-imposed
195 quota, the bounce message says "mailbox is full". This message was not
196 being given when it was a system quota that was exceeded. It now should
197 be the same.
198
0e20aff9
MH
199MH/03 Made $recipients available in local_scan(). local_scan() already has
200 better access to the recipient list through recipients_list[], but
201 $recipients can be useful in postmaster-provided expansion strings.
202
ca86f471
PH
203PH/28 The $smtp_command and $smtp_command_argument variables were not correct
204 in the case of a MAIL command with additional options following the
205 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
206 were accidentally chopped off.
207
a14e5636
PH
208PH/29 SMTP synchronization checks are implemented when a command is read -
209 there is a check that no more input is waiting when there shouldn't be
210 any. However, for some commands, a delay in an ACL can mean that it is
211 some time before the response is written. In this time, more input might
212 arrive, invalidly. So now there are extra checks after an ACL has run for
213 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
214 pipelining has not been advertised.
215
ec95d1a6
PH
216PH/30 MH's patch to allow iscntrl() characters to be list separators.
217
42855d71
PH
218PH/31 Unlike :fail:, a custom message specified with :defer: was not being
219 returned in the SMTP response when smtp_return_error_details was false.
220 This has been fixed.
221
57c2c631
PH
222PH/32 Change the Dovecot authenticator to use read() and write() on the socket
223 instead of the C I/O that was originally supplied, because problems were
224 reported on Solaris.
225
58c01c94
PH
226PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
227 Exim which did not show up earlier: it was assuming that a call to
228 SSL_CTX_set_info_callback() might give an error value. In fact, there is
229 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
230 was a macro that became an assignment, so it seemed to work. This has
231 changed to a proper function call with a void return, hence the compile
232 error. Exim's code has been fixed.
233
dee5a20a
PH
234PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
235 cpus.
236
d2ee6114
PH
237PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
238
b2d5182b
PH
239PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
240
79749a79
PH
241PH/37 If a message is not accepted after it has had an id assigned (e.g.
242 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
243 "Completed" line in the log. When some messages of this type were
244 selected by exigrep, they were listed as "not completed". Others were
245 picked up by some special patterns. I have improved the selection
246 criteria to be more general.
79749a79 247
c456d9bb
PH
248PH/38 The host_find_failed option in the manualroute router can now be set
249 to "ignore", to completely ignore a host whose IP address cannot be
250 found. If all hosts are ignored, the behaviour is controlled by the new
251 host_all_ignored option.
252
cd9868ec
PH
253PH/39 In a list of hosts for manualroute, if one item (either because of multi-
254 homing or because of multiple MX records with /mx) generated more than
255 one IP address, and the following item turned out to be the local host,
256 all the secondary addresses of the first item were incorrectly removed
257 from the list, along with the local host and any following hosts (which
258 is what is supposed to happen).
259
ebeaf996
PH
260PH/40 When Exim receives a message, it writes the login name, uid, and gid of
261 whoever called Exim into the -H file. In the case of the daemon it was
262 behaving confusingly. When first started, it used values for whoever
263 started the daemon, but after a SIGHUP it used the Exim user (because it
264 calls itself on a restart). I have changed the code so that it now always
265 uses the Exim user.
266
2679d413
PH
267PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
268 message are rejected with the same error (e.g. no authentication or bad
269 sender address), and a DATA command is nevertheless sent (as can happen
270 with PIPELINING or a stupid MUA), the error message that was given to the
271 RCPT commands is included in the rejection of the DATA command. This is
272 intended to be helpful for MUAs that show only the final error to their
273 users.
274
84024b72
PH
275PH/42 Another patch from the Sieve maintainer.
276
8005d38e
SC
277SC/02 Eximstats - Differentiate between permanent and temporary rejects.
278 Eximstats - Fixed some broken HTML links and added missing column headers
279 (Jez Hancock).
280 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
281 columns for Rejects, Temp Rejects, Ham, and Spam rows.
282
3298c6c6
SC
283SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
284
a43a27c5
PH
285PH/43 Yet another patch from the Sieve maintainer.
286
58eb016e 287PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
288 the response to the final '.' that terminates a message, but only in the
289 case where the client has not sent further data following the '.'
290 (unfortunately, this is allowed). However, in many cases there won't be
291 any further data because there won't be any more messages to send. A call
292 to select() can be used: if it shows that the input is "ready", there is
293 either input waiting, or the socket has been closed. An attempt to read
294 the next input character can distinguish the two cases. Previously, Exim
58eb016e 295 would have sent an OK response which the client would never have see.
563b63fa
PH
296 This could lead to message repetition. This fix should cure that, at
297 least in a lot of common cases.
58eb016e 298
b43a74ea
PH
299PH/45 Do not advertise STARTTLS in response to HELP unless it would be
300 advertised in response to EHLO.
301
b4ed4da0 302
5dd1517f
PH
303Exim version 4.66
304-----------------
305
306PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
307 fixed by 4.65/MH/01 (is this a record?) are fixed:
308
309 (i) An empty string was always treated as zero by the numeric comparison
310 operators. This behaviour has been restored.
311
312 (ii) It is documented that the numeric comparison operators always treat
313 their arguments as decimal numbers. This was broken in that numbers
314 starting with 0 were being interpreted as octal.
315
316 While fixing these problems I realized that there was another issue that
317 hadn't been noticed. Values of message_size_limit (both the global option
318 and the transport option) were treated as octal if they started with 0.
319 The documentation was vague. These values are now always treated as
320 decimal, and I will make that clear in the documentation.
321
322
93cfa765
TK
323Exim version 4.65
324-----------------
325
326TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
327 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
328 versions. (#438)
329
d6066548
MH
330MH/01 Don't check that the operands of numeric comparison operators are
331 integers when their expansion is in "skipping" mode (fixes bug
332 introduced by 4.64-PH/07).
333
4362ff0d
PH
334PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
335 child addresses, Exim now panics and dies. Previously, because the count
336 is held in a short int, deliveries were likely to be lost. As such a
337 large number of recipients for a single message is ridiculous
338 (performance will be very, very poor), I have chosen to impose a limit
339 rather than extend the field.
340
93cfa765 341
944e9e9c
TF
342Exim version 4.64
343-----------------
aa41d2de 344
21d74bd9
TK
345TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
346 leftover -K file (the existence of which was triggered by #402).
347 While we were at it, introduced process PID as part of the -K
348 filename. This should rule out race conditions when creating
349 these files.
350
351TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
352 processing considerably. Previous code took too long for large mails,
353 triggering a timeout which in turn triggers #401.
354
355TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
356 in the DK code in transports.c. sendfile() is not really portable,
357 hence the _LINUX specificness.
944e9e9c
TF
358
359TF/01 In the add_headers option to the mail command in an Exim filter,
360 there was a bug that Exim would claim a syntax error in any
361 header after the first one which had an odd number of characters
362 in the field name.
363
2b1c6e3a
PH
364PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
365 callout verification, Exim cached a "reject" for the entire domain. This
366 is correct for most verifications, but it is not correct for a recipient
367 verification with use_sender or use_postmaster set, because in that case
368 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
369 case of MAIL FROM:<> rejection from other early rejections (e.g.
370 rejection of HELO). When verifying a recipient using a non-null MAIL
371 address, the cache is ignored if it shows MAIL FROM:<> rejection.
372 Whatever the result of the callout, the value of the domain cache is
373 left unchanged (for any other kind of callout, getting as far as trying
374 RCPT means that the domain itself is ok).
375
1f872c80
PH
376PH/02 Tidied a number of unused variable and signed/unsigned warnings that
377 gcc 4.1.1 threw up.
378
379PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
380 manifest itself as EPIPE rather than ECONNECT. When tidying away a
381 session, the daemon ignores ECONNECT errors and logs others; it now
382 ignores EPIPE as well.
383
d203e649
PH
384PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
385 (quoted-printable decoding).
386
cc2ed8f7 387PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 388 later the small subsequent patch to fix an introduced bug.
f951fd57 389
ddfcd446
PH
390PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
391
d45b1de8
PH
392PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
393
394PH/08 An error is now given if message_size_limit is specified negative.
395
38a0a95f 396PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 397 to be given (somewhat) arbitrary names.
38a0a95f 398
a2405d83
JJ
399JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
400 in 4.64-PH/09.
401
402JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
403 miscellaneous code fixes
404
6ea85e9a
PH
405PH/10 Added the log_reject_target ACL modifier to specify where to log
406 rejections.
407
26da7e20
PH
408PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
409 hostname. This is wrong, because it relates to the incoming message (and
410 probably the interface on which it is arriving) and not to the outgoing
411 callout (which could be using a different interface). This has been
412 changed to use the value of the helo_data option from the smtp transport
413 instead - this is what is used when a message is actually being sent. If
414 there is no remote transport (possible with a router that sets up host
415 addresses), $smtp_active_hostname is used.
6ea85e9a 416
14aa5a05 417PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 418 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
419 (a) The code assumed that strncpy() returns a negative number on buffer
420 overflow, which isn't the case. Replaced with Exim's string_format()
421 function.
422 (b) There were several signed/unsigned issues. I just did the minimum
423 hacking in of casts. There is scope for a larger refactoring.
424 (c) The code used strcasecmp() which is not a standard C function.
425 Replaced with Exim's strcmpic() function.
426 (d) The code set only $1; it now sets $auth1 as well.
427 (e) A simple test gave the error "authentication client didn't specify
428 service in request". It would seem that Dovecot has changed its
429 interface. Fortunately there's a specification; I followed it and
430 changed what the client sends and it appears to be working now.
431
ff75a1f7
PH
432PH/13 Added $message_headers_raw to provide the headers without RFC 2047
433 decoding.
434
e6f6568e
PH
435PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
436 address A is aliased to B and C, where B exists and C does not. Without
437 -v the output is "A verified" because verification stops after a
438 successful redirection if more than one address is generated. However,
439 with -v the child addresses are also verified. Exim was outputting "A
440 failed to verify" and then showing the successful verification for C,
441 with its parentage. It now outputs "B failed to verify", showing B's
442 parentage before showing the successful verification of C.
443
d6f6e0dc
PH
444PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
445 look up a TXT record in a specific list after matching in a combined
446 list.
447
322050c2
PH
448PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
449 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
450 they consult the DNS. I had assumed they would set it the way they
451 wanted; and indeed my experiments on Linux seem to show that in some
452 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
453 To be on the safe side, however, I have now made the interface to
454 host_find_byname() similar to host_find_bydns(), with an argument
455 containing the DNS resolver options. The host_find_byname() function now
456 sets these options at its start, just as host_find_bydns() does. The smtp
457 transport options dns_qualify_single and dns_search_parents are passed to
458 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
459 of host_find_byname() use the default settings of RES_DEFNAMES
460 (qualify_single) but not RES_DNSRCH (search_parents).
461
08955dd3
PH
462PH/17 Applied (a modified version of) Nico Erfurth's patch to make
463 spool_read_header() do less string testing, by means of a preliminary
464 switch on the second character of optional "-foo" lines. (This is
465 overdue, caused by the large number of possibilities that now exist.
466 Originally there were few.) While I was there, I also converted the
467 str(n)cmp tests so they don't re-test the leading "-" and the first
468 character, in the hope this might squeeze out yet more improvement.
469
1eccaa59
PH
470PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
471 flag allowing group syntax was set by the header_syntax check but not
472 turned off, possible causing trouble later; (2) The flag was not being
473 set at all for the header_verify test, causing "group"-style headers to
474 be rejected. I have now set it in this case, and also caused header_
475 verify to ignore an empty address taken from a group. While doing this, I
476 came across some other cases where the code for allowing group syntax
477 while scanning a header line wasn't quite right (mostly, not resetting
478 the flag correctly in the right place). These bugs could have caused
479 trouble for malformed header lines. I hope it is now all correct.
480
602e59e5
PH
481PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
482 with the "reply" argument non-NULL. The code, however (which originally
483 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
484 but it didn't always do it. This confused somebody who was copying the
485 code for some other use. I have removed all the tests.
486
411ef850
PH
487PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
488 feature that was used to support insecure browsers during the U.S. crypto
489 embargo. It requires special client support, and Exim is probably the
490 only MTA that supported it -- and would never use it because real RSA is
491 always available. This code has been removed, because it had the bad
492 effect of slowing Exim down by computing (never used) parameters for the
493 RSA_EXPORT functionality.
494
7befa435
PH
495PH/21 On the advice of Timo Sirainen, added a check to the dovecot
496 authenticator to fail if there's a tab character in the incoming data
497 (there should never be unless someone is messing about, as it's supposed
498 to be base64-encoded). Also added, on Timo's advice, the "secured" option
499 if the connection is using TLS or if the remote IP is the same as the
500 local IP, and the "valid-client-cert option" if a client certificate has
501 been verified.
502
48da4259 503PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
504 authenticators. This can be used for authorization after authentication
505 succeeds. (In the case of plaintext, it servers for both authentication
506 and authorization.)
507
48da4259
PH
508PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
509 if any retry times were supplied.
510
d1d5595c
PH
511PH/24 Exim crashed if verify=helo was activated during an incoming -bs
512 connection, where there is no client IP address to check. In this
513 situation, the verify now always succeeds.
514
0ef732d9
PH
515PH/25 Applied John Jetmore's -Mset patch.
516
328895cc
PH
517PH/26 Added -bem to be like -Mset, but loading a message from a file.
518
fd700877
PH
519PH/27 In a string expansion for a processed (not raw) header when multiple
520 headers of the same name were present, leading whitespace was being
521 removed from all of them, but trailing whitespace was being removed only
522 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
523 before concatenation. Completely empty headers in a concatenation (as
524 before) are ignored.
fd700877 525
8dce1a6f
PH
526PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
527 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
528
17af4a17
PH
529PH/29 [Removed. This was a change that I later backed out, and forgot to
530 correct the ChangeLog entry (that I had efficiently created) before
531 committing the later change.]
f6c332bd
PH
532
533PH/30 Exim was sometimes attempting to deliver messages that had suffered
534 address errors (4xx response to RCPT) over the same connection as other
535 messages routed to the same hosts. Such deliveries are always "forced",
536 so retry times are not inspected. This resulted in far too many retries
537 for the affected addresses. The effect occurred only when there were more
538 hosts than the hosts_max_try setting in the smtp transport when it had
539 the 4xx errors. Those hosts that it had tried were not added to the list
540 of hosts for which the message was waiting, so if all were tried, there
541 was no problem. Two fixes have been applied:
542
543 (i) If there are any address or message errors in an SMTP delivery, none
544 of the hosts (tried or untried) are now added to the list of hosts
545 for which the message is waiting, so the message should not be a
546 candidate for sending over the same connection that was used for a
547 successful delivery of some other message. This seems entirely
548 reasonable: after all the message is NOT "waiting for some host".
549 This is so "obvious" that I'm not sure why it wasn't done
550 previously. Hope I haven't missed anything, but it can't do any
551 harm, as the worst effect is to miss an optimization.
552
553 (ii) If, despite (i), such a delivery is accidentally attempted, the
554 routing retry time is respected, so at least it doesn't keep
555 hammering the server.
556
c1114884
PH
557PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
558 in ${readsocket because some servers need this prod.
559
7a0743eb
PH
560PH/32 Added some extra debug output when updating a wait-xxx database.
561
0d85fa3f
PH
562PH/33 The hint "could be header name not terminated by colon", which has been
563 given for certain expansion errors for a long time, was not being given
564 for the ${if def:h_colon_omitted{... case.
565
1bf43b78
PH
566PH/34 The spec says: "With one important exception, whenever a domain list is
567 being scanned, $domain contains the subject domain." There was at least
568 one case where this was not true.
569
520de300
PH
570PH/35 The error "getsockname() failed: connection reset by peer" was being
571 written to the panic log as well as the main log, but it isn't really
572 panic-worthy as it just means the connection died rather early on. I have
573 removed the panic log writing for the ECONNRESET error when getsockname()
574 fails.
575
48c7f9e2
PH
576PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
577 runs only) independently of the message's sender address. This meant
578 that, if the 4xx error was in fact related to the sender, a different
579 message to the same recipient with a different sender could confuse
580 things. In particualar, this can happen when sending to a greylisting
581 server, but other circumstances could also provoke similar problems.
582 I have changed the default so that the retry time for these errors is now
583 based a combination of the sender and recipient addresses. This change
584 can be overridden by setting address_retry_include_sender=false in the
585 smtp transport.
586
99ea1c86
PH
587PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
588 remote server are returned as part of bounce messages. This was not
589 happening for LMTP over a pipe (the lmtp transport), but now it is the
590 same for both kinds of LMTP.
591
a2042e78
PH
592PH/38 Despite being documented as not happening, Exim was rewriting addresses
593 in header lines that were in fact CNAMEs. This is no longer the case.
594
4fbcfc2e
PH
595PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
596 and queue runs started by the daemon processed all messages. This has
597 been fixed so that -R and -S can now usefully be given with -q<time>.
598
aa41d2de
PH
599PH/40 Import PCRE release 6.7 (fixes some bugs).
600
af561417
PH
601PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
602
3cc66b45
PH
603PH/42 Give an error if -q is specified more than once.
604
194cc0e4
PH
605PH/43 Renamed the variables $interface_address and $interface_port as
606 $received_ip_address and $received_port, to make it clear that these
607 values apply to message reception, and not to the outgoing interface when
608 a message is delivered. (The old names remain recognized, of course.)
609
a401ddaa
PH
610PH/44 There was no timeout on the connect() call when using a Unix domain
611 socket in the ${readsocket expansion. There now is.
612
4e88a19f
PH
613PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
614 be meaningful with "accept".
615
d7d7b289
SC
616SC/01 Eximstats V1.43
617 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
618
619SC/02 Eximstats V1.44
620 Use a glob alias rather than an array ref in the generated
621 parser. This improves both readability and performance.
622
623SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
624 Collect SpamAssassin and rejection statistics.
625 Don't display local sender or destination tables unless
626 there is data to show.
627 Added average volumes into the top table text output.
628
629SC/04 Eximstats V1.46
630 Collect data on the number of addresses (recipients)
631 as well as the number of messages.
632
633SC/05 Eximstats V1.47
634 Added 'Message too big' to the list of mail rejection
635 reasons (thanks to Marco Gaiarin).
636
637SC/06 Eximstats V1.48
638 Mainlog lines which have GMT offsets and are too short to
639 have a flag are now skipped.
640
641SC/07 Eximstats V1.49 (Alain Williams)
642 Added the -emptyok flag.
643
644SC/08 Eximstats V1.50
645 Fixes for obtaining the IP address from reject messages.
646
0ea2a468
JJ
647JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
648 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
649 whitesspace changes from 4.64-PH/27
650
651JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
652 match 4.64-PH/13
653
654JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
655 are found, allow negative numbers in numeric criteria)
656
657JJ/06 exipick.20061117.2, added new $message_body_missing variable
658
659JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
660 to match changes made in 4.64-PH/43
661
8a10f5a4
PH
662PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
663
30e18802
PH
664PH/47 Put in an explicit test for a DNS lookup of an address record where the
665 "domain" is actually an IP address, and force a failure. This locks out
666 those revolvers/nameservers that support "A-for-A" lookups, in
667 contravention of the specifications.
668
55728a4f
PH
669PH/48 When a host name was looked up from an IP address, and the subsequent
670 forward lookup of the name timed out, the host name was left in
671 $sender_host_name, contrary to the specification.
d7d7b289 672
d7837193
PH
673PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
674 restricted to single-key lookups, Exim was not diagnosing an error if
675 * or *@ was used with a query-style lookup.
676
87054a31
PH
677PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
678
ea2c01d2
MH
679MH/01 local_scan ABI version incremented to 1.1. It should have been updated
680 long ago, but noone interested enough thought of it. Let's just say that
681 the "1.1" means that there are some new functions that weren't there at
682 some point in the past.
683
e4fa6968
PH
684PH/51 Error processing for expansion failure of helo_data from an smtp
685 transport during callout processing was broken.
686
56f5d9bd
PH
687PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
688 tested/used via the -bh/-bhc/-bs options.
689
922e1c28
PH
690PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
691 bug, fixed in subsequent PCRE releases).
692
21eb6e72
PH
693PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
694 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
695
a0540757
PH
696PH/55 Check for a ridiculously long file name in exim_dbmbuild.
697
944e9e9c 698
478be7b0
SC
699Exim version 4.63
700-----------------
701
702SC/01 Use a glob alias rather than an array ref in eximstats generated
703 parser. This improves both readability and performance.
704
705SC/02 Collect SpamAssassin and rejection statistics in eximstats.
706 Don't display local sender or destination tables in eximstats unless
707 there is data to show.
708 Added average volumes into the eximstats top table text output.
709
710SC/03 Collect data on the number of addresses (recipients) as well
711 as the number of messages in eximstats.
712
2b965a65
TF
713TF/01 Correct an error in the documentation for the redirect router. Exim
714 does (usually) call initgroups() when daemonizing.
478be7b0 715
45b91596
PH
716TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
717 with consistent privilege compared to when running as a daemon.
478be7b0 718
c59f5781
TF
719TF/03 Note in the spec that $authenticated_id is not set for local
720 submissions from trusted users.
721
90fc3069
TF
722TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
723 Thanks to Dean Brooks <dean@iglou.com> for the patch.
724
6083aca0
TF
725TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
726 by adding some example configuration directives to the default
727 configuration file. A little bit of work is required to uncomment the
728 directives and define how usernames and passwords are checked, but
729 there is now a framework to start from.
730
765b530f
PH
731PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
732 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
733 without this. I don't know how relevant this is to other LDAP libraries.
734
4e167a8c
PH
735PH/02 Add the verb name to the "unknown ACL verb" error.
736
4608d683
PH
737PH/03 Magnus Holmgren's patch for filter_prepend_home.
738
b8dc3e4a
PH
739PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
740
5418e93b
PH
741PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
742 directory not expanded when it should be if an expanded home directory
743 was set for the address (which is overridden by the transport).
744
b4a9bda2
PH
745PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
746 libradius.
747
45b91596
PH
748PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
749 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
750 because it is too late at that time, and has no effect.
751
5547e2c5
PH
752PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
753 security issue with \' (bugzilla #107). I could not use the
754 PQescapeStringConn() function, because it needs a PGconn value as one of
755 its arguments.
756
dbcef0ea
PH
757PH/08 When testing addresses using -bt, indicate those final addresses that
758 are duplicates that would not cause an additional delivery. At least one
759 person was confused, thinking that -bt output corresponded to deliveries.
760 (Suppressing duplicates isn't a good idea as you lose the information
761 about possibly different redirections that led to the duplicates.)
762
25257489
PH
763PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
764 systems where poll() doesn't work, in particular OS X.
765
c816d124
PH
766PH/10 Added more information to debugging output for retry time not reached.
767
a9ccd69a
PH
768PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
769 operations in malware.c.
770
75fa1910
PH
771PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
772 signatures.
773
a7d7aa58
PH
774PH/13 If write_rejectlog was set false when logging was sent to syslog with
775 syslog_duplication set false, log lines that would normally be written
776 both the the main log and to the reject log were not written to syslog at
777 all.
778
42119b09
PH
779PH/14 In the default configuration, change the use of "message" in ACL warn
780 statements to "add_header".
781
41609df5
PH
782PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
783 not followed by a command (e.g. "seen endif").
784
a5bd321b
PH
785PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
786 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
787 latter.
788
e85a7ad5 789PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
790 so that it is now:
791
e85a7ad5
PH
792 ${if or { \
793 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
794 { match{$h_precedence:}{(?i)bulk|list|junk} } \
795 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
796 }{no}{yes}}
797
e85a7ad5
PH
798 The Auto-Submitted: and various List- headers are standardised, whereas I
799 don't think Precedence: ever was.
5dff5817 800
d8fe1c03
PH
801PH/18 Refactored debugging code in route_finduser() to show more information,
802 in particular, the error code if getpwnam() issues one.
803
16282d2b
PH
804PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
805 This is apparently needed in addition to the PH/07 change above to avoid
806 any possible encoding problems.
807
35d40a98
PH
808PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
809 but not after initializing Perl.
810
034d99ab
PH
811PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
812 output them only if debugging. By default they are written stderr,
813 apparently, which is not desirable.
814
6ec97b1b
PH
815PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
816 queries.
817
e22ca4ac
JJ
818JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
819 --not options
820
821JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
822
33d73e3b
PH
823PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
824 authenticated or an ident call has been made. Suppress the default
825 values for $authenticated_id and $authenticated_sender (but permit -oMai
826 and -oMas) when testing with -bh.
827
9ecb03f3
PH
828PH/24 Re-jigged the order of the tests in the default configuration so that the
829 tests for valid domains and recipients precede the DNS black list and CSA
830 tests, on the grounds that those ones are more expensive.
831
084efe8d
PH
832PH/25 Exim was not testing for a space following SMTP commands such as EHLO
833 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
834 This bug exists in every version of Exim that I still have, right back to
835 0.12.
836
366fc9f0
PH
837PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
838 However, an attempt to turn on case-sensitivity in a regex key by
839 including (?-i) didn't work because the subject string was already
840 lowercased, and the effects were non-intuitive. It turns out that a
841 one-line patch can be used to allow (?-i) to work as expected.
842
c59f5781 843
c887c79e
TF
844Exim version 4.62
845-----------------
846
847TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
848 other effects) broke the use of negated acl sub-conditions.
849
1cce3af8
PH
850PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
851 patch).
852
afb3eaaf
PH
853PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
854 "Deny" causes Exim to reject the incoming connection with a 554 error.
855 Unfortunately, if there is a major crisis, such as a disk failure,
856 tcp-wrappers gives "deny", whereas what one would like would be some
857 kind of temporary error. A kludge has been added to help with this.
858 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
859 554 error is used if errno is still zero or contains ENOENT (which occurs
860 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
861 451 error is used.
862
e173618b
PH
863PH/03 Add -lutil to the default FreeBSD LIBS setting.
864
dd16e114
PH
865PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
866 errors. Otherwise a message that provokes a temporary error (when other
867 messages do not) can cause a whole host to time out.
868
f7fd3850
PH
869PH/05 Batch deliveries by appendfile and pipe transports did not work when the
870 addresses were routed directly to files or pipes from a redirect router.
871 File deliveries just didn't batch; pipe deliveries might have suffered
872 odd errors.
873
d87df92c
PH
874PH/06 A failure to get a lock for a hints database would erroneously always say
875 "Failed to get write lock", even when it was really a read lock.
876
7e9f683d
PH
877PH/07 The appendfile transport was creating MBX lock files with a fixed mode
878 of 0600. This has been changed to use the value of the lockfile_mode
879 option (which defaults to 0600).
880
bfad5236
PH
881PH/08 Applied small patch from the Sieve maintainer.
882
01c490df
PH
883PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
884 folder from quota calculations, a direct delivery into this folder messed
885 up the contents of the maildirsize file. This was because the regex was
886 used only to exclude .Trash (or whatever) when the size of the mailbox
887 was calculated. There was no check that a delivery was happening into an
888 excluded directory. This bug has been fixed by ignoring all quota
889 processing for deliveries into excluded directories.
890
d6629cdc
PH
891PH/10 Added the maildirfolder_create_regex option to appendfile.
892
1cce3af8 893
214e2000
PH
894Exim version 4.61
895-----------------
896
897PH/01 The code for finding all the local interface addresses on a FreeBSD
898 system running IPv6 was broken. This may well have applied to all BSD
899 systems, as well as to others that have similar system calls. The broken
900 code found IPv4 interfaces correctly, but gave incorrect values for the
901 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
902 that it would not match correctly against @[] and not recognize the IPv6
903 addresses as local.
904
f9daeae0
PH
905PH/02 The ipliteral router was not recognizing addresses of the form user@
906 [ipv6:....] because it didn't know about the "ipv6:" prefix.
907
7e66e54d
PH
908PH/03 Added disable_ipv6.
909
c8ea1597
PH
910PH/04 Changed $reply_address to use the raw form of the headers instead of the
911 decoded form, because it is most often used to construct To: headers
912 lines in autoreplies, and the decoded form may well be syntactically
913 invalid. However, $reply_address has leading white space removed, and all
914 newlines turned into spaces so that the autoreply transport does not
915 grumble.
916
911f6fde
PH
917PH/05 If group was specified without a user on a router, and no group or user
918 was specified on a transport, the group from the router was ignored.
919
47ca6d6c
PH
920PH/06 Increased the number of ACL variables to 20 of each type, and arranged
921 for visible compile-time settings that can be used to change these
922 numbers, for those that want even more. Backwards compatibility with old
923 spool files has been maintained. However, going back to a previous Exim
924 release will lost any variables that are in spool files.
925
ed0e9820
PH
926PH/07 Two small changes when running in the test harness: increase delay when
927 passing a TCP/IP connection to a new process, in case the original
928 process has to generate a bounce, and remove special handling of
929 127.0.0.2 (sic), which is no longer necessary.
930
eff37e47
PH
931PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
932 be the same on different OS.
933
1921d2ea
PH
934PH/09 Moved a debug statement in filter processing to avoid a race problem when
935 testing.
936
b3f69ca8
JJ
937JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
938 whether --show-vars was specified or not
939
940JJ/02 exipick: Added support for new ACL variable spool format introduced
941 in 4.61-PH/06
942
424a1c63
PH
943PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
944 syntactically invalid From: or Reply-to: line, and a filter used this to
945 generate an autoreply, and therefore failed to obtain an address for the
946 autoreply, Exim could try to deliver to a non-existent relative file
947 name, causing unrelated and misleading errors. What now happens is that
948 it logs this as a hard delivery error, but does not attempt to create a
949 bounce message.
950
7a100415
PH
951PH/11 The exinext utility has a -C option for testing purposes, but although
952 the given file was scanned by exinext itself; it wasn't being passed on
953 when Exim was called.
954
19b9dc85
PH
955PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
956 an end-of-file indication when reading a command response.
957
309bd837
PH
958PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
959 compiled. In many other places in Exim, IPv6 addresses are always
960 recognized, so I have changed this. It also means that IPv4 domain
961 literals of the form [IPV4:n.n.n.n] are now always recognized.
962
59e82a2a
PH
963PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
964 used if the router is not running as root, for example, when verifying at
965 ACL time, or when using -bh. The debugging output from this situation was
966 non-existent - all you got was a failure to exec. I have made two
967 changes:
968
969 (a) Failures to set uid/gid, the current directory, or a process leader
970 in a subprocess such as that created by queryprogram now generate
971 suitable debugging ouput when -d is set.
972
973 (b) The queryprogram router detects when it is not running as root,
974 outputs suitable debugging information if -d is set, and then runs
975 the subprocess without attempting to change uid/gid.
976
9edc04ce
PH
977PH/15 Minor change to Makefile for building test_host (undocumented testing
978 feature).
979
1349e1e5
PH
980PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
981 additional section of a DNS packet that returns MX or SRV records.
982 Instead, it always explicitly searches for A/AAAA records. This avoids
983 major problems that occur when a DNS server includes only records of one
984 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
985 fixed another bug: if SRV records were looked up and the corresponding
986 address records were *not* found in the additional section, the port
987 values from the SRV records were lost.
988
ea49d0e1
PH
989PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
990 using the correct key (the original address) when searching the retry
991 rules in order to find which one to use for generating the retry hint.
992
064a94c9
PH
993PH/18 If quota_warn_message contains a From: header, Exim now refrains from
994 adding the default one. Similarly, if it contains a Reply-To: header, the
995 errors_reply_to option, if set, is not used.
996
727071f8
PH
997PH/19 When calculating a retry time, Exim used to measure the "time since
998 failure" by looking at the "first failed" field in the retry record. Now
999 it does not use this if it is later than than the arrival time of the
1000 message. Instead it uses the arrival time. This makes for better
1001 behaviour in cases where some deliveries succeed, thus re-setting the
1002 "first failed" field. An example is a quota failure for a huge message
1003 when small messages continue to be delivered. Without this change, the
1004 "time since failure" will always be short, possible causing more frequent
1005 delivery attempts for the huge message than are intended.
dd16e114 1006 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1007
f78eb7c6
PH
1008PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1009 $1, $2, $3) because the numerical variables can be reset during some
1010 expansion items (e.g. "match"), thereby losing the authentication data.
1011
21c28500
PH
1012PH/21 Make -bV show the size of off_t variables so that the test suite can
1013 decide whether to run tests for quotas > 2G.
1014
1015PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1016 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1017 filecount value is greater than 2G or if a quota value is greater than 2G
1018 on a system where the size of off_t is not greater than 4, a panic error
1019 is given.
1020
1688f43b
PH
1021PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1022 never match. The debug and -bh output now contains an explicit error
1023 message indicating a malformed IPv4 address or mask.
1024
1025PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1026 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1027 PH/23 above applies.
1028
9675b384
PH
1029PH/25 Do not write to syslog when running in the test harness. The only
1030 occasion when this arises is a failure to open the main or panic logs
1031 (for which there is an explicit test).
1032
6a3f1455
PH
1033PH/26 Added the /no_tell option to "control=freeze".
1034
dac79d3e
PH
1035PH/27 If a host name lookup failed very early in a connection, for example, if
1036 the IP address matched host_lookup and the reverse lookup yielded a name
1037 that did not have a forward lookup, an error message of the form "no IP
1038 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1039 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1040
5977a0b3
PH
1041PH/28 An enabling patch from MH: add new function child_open_exim2() which
1042 allows the sender and the authenticated sender to be set when
1043 submitting a message from within Exim. Since child_open_exim() is
1044 documented for local_scan(), the new function should be too.
1045
c91535f3
PH
1046PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1047 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1048 results in an empty string is now treated as unset.
1049
0d46a8c8
PH
1050PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1051
278c6e6c
PH
1052PH/31 Added sender_verify_fail logging option.
1053
2cbb4081
PH
1054PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1055 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1056 tidied the source and removed it altogether.
1057
3eef829e
PH
1058PH/33 When a queue run was abandoned because the load average was too high, a
1059 log line was always written; now it is written only if the queue_run log
1060 selector is set. In addition, the log line for abandonment now contains
1061 information about the queue run such as the pid. This is always present
1062 in "start" and "stop" lines but was omitted from the "abandon" line.
1063
1ab95fa6
PH
1064PH/34 Omit spaces between a header name and the colon in the error message that
1065 is given when verify = headers_syntax fails (if there are lots of them,
1066 the message gets confusing).
1067
230205fc
PH
1068PH/35 Change the default for dns_check_names_pattern to allow slashes within
1069 names, as there are now some PTR records that contain slashes. This check
1070 is only to protect against broken name servers that fall over on strange
1071 characters, so the fact that it applies to all lookups doesn't matter.
1072
75e0e026
PH
1073PH/36 Now that the new test suite is complete, we can remove some of the
1074 special code in Exim that was needed for the old test suite. For example,
1075 sorting DNS records because real resolvers return them in an arbitrary
1076 order. The new test suite's fake resolver always returns records in the
1077 same order.
1078
1079PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1080 bounces) except when queue_only is set, to avoid logging races between
1081 the different processes.
1082
145396a6
PH
1083PH/38 Panic-die if .include specifies a non-absolute path.
1084
3cd34f13
PH
1085PH/39 A tweak to the "H" retry rule from its user.
1086
11121d3d
JJ
1087JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1088 a label. They prevented compilation on older perls.
1089
1090JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1091 a warning to be raised on newish perls.
1092
1093JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1094 on queue. Changes to match documented behaviour of showing count of
1095 messages matching specified criteria.
1096
8def5aaf
PH
1097PH/40 Changed the default ident timeout from 30s to 5s.
1098
929ba01c
PH
1099PH/41 Added support for the use of login_cap features, on those BSD systems
1100 that have them, for controlling the resources used by pipe deliveries.
1101
2632889e
PH
1102PH/42 The content-scanning code uses fopen() to create files in which to put
1103 message data. Previously it was not paying any attention to the mode of
1104 the files. Exim runs with umask(0) because the rest of the code creates
1105 files with open(), and sets the required mode explicitly. Thus, these
1106 files were ending up world-writeable. This was not a big issue, because,
1107 being within the spool directory, they were not world-accessible. I have
1108 created a function called modefopen, which takes an additional mode
1109 argument. It sets umask(777), creates the file, chmods it to the required
1110 mode, then resets the umask. All the relevant calls to fopen() in the
1111 content scanning code have been changed to use this function.
1112
944a9c55
PH
1113PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1114 to 24 hours. This avoids potential overflow problems when processing G
1115 and H retry rules. I suspect nobody ever tinkers with this value.
1116
4a23603b
PH
1117PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1118
4730f942
PH
1119PH/45 When the plaintext authenticator is running as a client, the server's
1120 challenges are checked to ensure they are valid base64 strings. By
1121 default, the authentication attempt is cancelled if an invalid string is
1122 received. Setting client_ignore_invalid_base64 true ignores these errors.
1123 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1124 they are received. Thus, the responses can be made to depend on the
1125 challenges. If an invalid string is ignored, an empty string is placed in
1126 the variable.
1127
30dba1e6
PH
1128PH/46 Messages that are created by the autoreply transport now contains a
1129 References: header, in accordance with RFCs 2822 and 3834.
1130
382afc6b
PH
1131PH/47 Added authenticated_sender_force to the smtp transport.
1132
a86229cf
PH
1133PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1134
50c99ba6
PH
1135PH/49 Installed latest patch from the Sieve maintainer.
1136
d35e429d
PH
1137PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1138 was also set, the appendfile transport was unnecessarily scanning a
1139 directory of message files (e.g. for maildir delivery) to find the count
1140 of files (along with the size), even though it did not need this
1141 information. It now does the scan only if it needs to find either the
1142 size of the count of files.
1143
f90d018c
PH
1144PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1145
75def545
PH
1146PH/52 Two bugs concerned with error handling when the smtp transport is
1147 used in LMTP mode:
1148
1149 (i) Exim was not creating retry information for temporary errors given
1150 for individual recipients after the DATA command when the smtp transport
1151 was used in LMTP mode. This meant that they could be retried too
1152 frequently, and not timed out correctly.
1153
1154 (ii) Exim was setting the flag that allows error details to be returned
1155 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1156 recipients that were returned after the DATA command.
1157
1158PH/53 This is related to PH/52, but is more general: for any failing address,
1159 when detailed error information was permitted to be returned to the
1160 sender, but the error was temporary, then after the final timeout, only
1161 "retry timeout exceeded" was returned. Now it returns the full error as
1162 well as "retry timeout exceeded".
1163
c46782ef
PH
1164PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1165 do this, and (what is worse) MTAs that accept it.
1166
71fafd95
PH
1167PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1168 will now be deprecated.
1169
2c5db4fd
PH
1170PH/56 New os.c-cygwin from the Cygwin maintainer.
1171
9cf6b11a
JJ
1172JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1173 formats (previously only available in exim formats via -bpr, -bpru,
1174 and -bpra. Now also available in native and exiqgrep formats)
1175
1176JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1177 with very large, slow to parse queues
1178
1179JJ/08 exipick: added ! as generic prefix to negate any criteria format
1180
1181JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1182
898d150f
PH
1183PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1184 responses to authentication challenges, though it was showing the
1185 challenges; (ii) I've removed the CR characters from the debug output for
1186 SMTP output lines.
1187
46218253
PH
1188PH/58 Allow for the insertion of a newline as well as a space when a string
1189 is turned into more than one encoded-word during RFC 2047 encoding. The
1190 Sieve code now uses this.
1191
e97957bc
PH
1192PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1193 data_4xx, lost_connection, tls_required.
1194
81e509d7
PH
1195PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1196 message was being sent as an SMTP response.
1197
3d240ff7
PH
1198PH/61 Add -l and -k options to exicyclog.
1199
b37c4101
PH
1200PH/62 When verifying, if an address was redirected to one new address, so that
1201 verification continued, and the new address failed or deferred after
1202 having set something in $address_data, the value of $address_data was not
1203 passed back to the ACL. This was different to the case when no
1204 redirection occurred. The value is now passed back in both cases.
1205
79378e0f
PH
1206PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1207 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1208 use login_cap.h, so on its own it isn't the distinguishing feature. The
1209 new name refers directly to the setclassresources() function.
1210
e49c7bb4
PH
1211PH/65 Added configuration files for NetBSD3.
1212
d114ec46
PH
1213PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1214
f3d7df6c
PH
1215PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1216 is preferred over IPv4.
1217
715ab376
PH
1218PH/68 The bounce_return_message and bounce_return_body options were not being
1219 honoured for bounces generated during the reception of non-SMTP messages.
1220 In particular, this applied to messages rejected by the ACL. This bug has
1221 been fixed. However, if bounce_return_message is true and bounce_return_
1222 body is false, the headers that are returned for a non-SMTP message
1223 include only those that have been read before the error was detected.
1224 (In the case of an ACL rejection, they have all been read.)
1225
6b31b150
PH
1226PH/69 The HTML version of the specification is now built in a directory called
1227 spec_html instead of spec.html, because the latter looks like a path with
1228 a MIME-type, and this confuses some software.
1229
1230PH/70 Catch two compiler warnings in sieve.c.
1231
d515a917
PH
1232PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1233 function verify_get_ident() calls ip_connect() to connect a socket, but
1234 if the "connect()" function timed out, ip_connect() used to close the
1235 socket. However, verify_get_ident() also closes the socket later, and in
1236 between Exim writes to the log, which may get opened at this point. When
1237 the socket was closed in ip_connect(), the log could get the same file
1238 descriptor number as the socket. This naturally causes chaos. The fix is
1239 not to close the socket in ip_connect(); the socket should be closed by
1240 the function that creates it. There was only one place in the code where
1241 this was missing, in the iplookup router, which I don't think anybody now
1242 uses, but I've fixed it anyway.
1243
9b8fadde
PH
1244PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1245 well as to direct DNS lookups. Otherwise the handling of names in host
1246 lists is inconsistent and therefore confusing.
1247
214e2000 1248
5de37277
PH
1249Exim version 4.60
1250-----------------
1251
cc38ddbf
PH
1252PH/01 Two changes to the default runtime configuration:
1253
1254 (1) Move the checks for relay_from_hosts and authenticated clients from
1255 after to before the (commented out) DNS black list checks.
1256
1257 (2) Add control=submission to the relay_from_hosts and authenticated
1258 clients checks, on the grounds that messages accepted by these
1259 statements are most likely to be submissions.
5de37277 1260
72fdd6ae
PH
1261PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1262
1263 (1) Generate an error if the third argument for the ${prvs expansion is
1264 not a single digit.
1265
1266 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1267 string.
1268
1269 (3) Reset the variables that are obtained from the first argument of
1270 ${prvscheck and used in the second argument before leaving the code,
1271 because their memory is reclaimed, so using them afterwards may do
1272 silly things.
1273
1274 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1275 one (it's much easier than Tom thought :-).
1276
1277 (5) Because of (4), we can now allow for the use of $prvscheck_result
1278 inside the third argument.
cb9328de 1279
cb741023
PH
1280PH/03 For some reason, the default setting of PATH when running a command from
1281 a pipe transport was just "/usr/bin". I have changed it to
1282 "/bin:/usr/bin".
1283
f174f16e
PH
1284PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1285 anything to be listed in the output from -bV.
b2f5a032 1286
c25242d7
PH
1287PH/05 When a filter generated an autoreply, the entire To: header line was
1288 quoted in the delivery log line, like this:
1289
1290 => >A.N.Other <ano@some.domain> <original@ddress> ...
1291
1292 This has been changed so that it extracts the operative address. There
1293 may be more than one such address. If so, they are comma-separated, like
1294 this:
1295
1296 => >ano@some.domain,ona@other.domain <original@ddress> ...
1297
82c19f95
PH
1298PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1299 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1300 not being looked up in the rDNS to get a host name, Exim was showing the
1301 IP address twice in Received: lines, even though the IP addresses were
1302 identical. For example:
1303
1304 Received: from [1.2.3.4] (helo=[1.2.3.4])
1305
1306 However, if the real host name was known, it was omitting the HELO data
1307 if it matched the actual IP address. This has been tidied up so that it
1308 doesn't show the same IP address twice.
1309
d7ffbc12
PH
1310PH/07 When both +timestamp and +memory debugging was on, the value given by
1311 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1312 called by the debug printing, thereby overwriting the timestamp buffer.
1313 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1314
9f526266
PH
1315PH/08 When the original message was included in an autoreply transport, it
1316 always said "this is a copy of the message, including all the headers",
1317 even if body_only or headers_only was set. It now gives an appropriate
1318 message.
1319
87fcc8b9
PH
1320PH/09 Applied a patch from the Sieve maintainer which:
1321
1322 o fixes some comments
1323 o adds the (disabled) notify extension core
1324 o adds some debug output for the result of if/elsif tests
1325 o points to the current vacation draft in the documentation
1326 and documents the missing references header update
1327
1328 and most important:
1329
1330 o fixes a bug in processing the envelope test (when testing
1331 multiple envelope elements, the last element determinted the
1332 result)
1333
456682f5
PH
1334PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1335 Electronic Mail") by including:
1336
1337 Auto-submitted: auto-generated
1338
1339 in the messages that it generates (bounce messages and others, such as
1340 warnings). In the case of bounce messages for non-SMTP mesages, there was
1341 also a typo: it was using "Auto_submitted" (underscore instead of
1342 hyphen). Since every message generated by Exim is necessarily in response
1343 to another message, thes have all been changed to:
1344
1345 Auto-Submitted: auto-replied
1346
1347 in accordance with these statements in the RFC:
1348
1349 The auto-replied keyword:
1350
1351 - SHOULD be used on messages sent in direct response to another
1352 message by an automatic process,
1353
1354 - MUST NOT be used on manually-generated messages,
1355
1356 - MAY be used on Delivery Status Notifications (DSNs) and Message
1357 Disposition Notifications (MDNs),
1358
1359 - MUST NOT be used on messages generated by automatic or periodic
1360 processes, except for messages which are automatic responses to
1361 other messages.
1362
3e46c1aa
PH
1363PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1364 to the default Received: header definition.
456682f5 1365
49826d12
PH
1366PH/12 Added log selector acl_warn_skipped (default on).
1367
eba0c039
PH
1368PH/13 After a successful wildlsearch lookup, discard the values of numeric
1369 variables because (a) they are in the wrong storage pool and (b) even if
1370 they were copied, it wouldn't work properly because of the caching.
1371
a0d6ba8a
PH
1372PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1373 checking when decoding. Apparently there are clients that generate
1374 overlong encoded strings. Why am I not surprised?
1375
f0917727
PH
1376PH/15 If the first argument of "${if match_address" was not empty, but did not
1377 contain an "@" character, Exim crashed. Now it writes a panic log message
1378 and treats the condition as false.
1379
096fee00
PH
1380PH/16 In autoreply, treat an empty string for "once" the same as unset.
1381
024bd3c2
PH
1382PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1383 extension "envelope-auth". The code is finished and in agreement with
1384 other implementations, but there is no documentation so far and in fact,
1385 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1386 not changing the active code.
1387
1388 Print executed "if" and "elsif" statements when debugging is used. This
1389 helps a great deal to understand what a filter does.
1390
1391 Document more things not specified clearly in RFC3028. I had all this
1392 sorted out, when out of a sudden new issues came to my mind. Oops."
1393
df199fec
PH
1394PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1395 (Bugzilla #53).
1396
d27f1df3
PH
1397PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1398 canonical form (as documented). However, after a host name lookup from
1399 the IP address, check_host() was doing a simple string comparison with
1400 addresses acquired from the DNS when checking that the found name did
1401 have the original IP as one of its addresses. Since any found IPv6
1402 addresses are likely to be in abbreviated form, the comparison could
1403 fail. Luckily, there already exists a function for doing the comparison
1404 by converting both addresses to binary, so now that is used instead of
1405 the text comparison.
1406
96776534
PH
1407PH/20 There was another similar case to PH/19, when a complete host name was
1408 given in a host list; looking up its IP address could give an abbreviated
1409 form, whereas the current host's name might or might not be abbreviated.
1410 The same fix has been applied.
1411
5de37277 1412
9a799bc0
PH
1413Exim version 4.54
1414-----------------
1415
1416PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1417 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1418 It now does.
1419
99a4b039
PH
1420PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1421 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1422
1423PH/03 Typo: missing ".o" in src/pcre/Makefile.
1424
4b233853
PH
1425PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1426 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1427 Also, for "Auto-Submitted", treat anything other than "no" as
1428 non-personal, in accordance with RFC 3834. (Previously it treated
1429 anything starting "auto-" as non-personal.)
1430
8857ccfd
PH
1431TF/01 The control=submission/name=... option had a problem with syntax
1432 errors if the name included a slash character. The /name= option
1433 now slurps the rest of the string, so it can include any characters
1434 but it must come last in the list of options (after /sender_retain
1435 or /domain=).
1436
433a2980
PH
1437PH/05 Some modifications to the interface to the fake nameserver for the new
1438 testing suite.
1439
3e46c1aa 1440
9a799bc0 1441
e3a311ba
TK
1442Exim version 4.53
1443-----------------
1444
1445TK/01 Added the "success_on_redirect" address verification option. See
1446 NewStuff for rationale and an example.
1447
13b685f9
PH
1448PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1449
395ff96d
PH
1450PH/02 Patch to exigrep to allow it to work on syslog lines.
1451
5b68f6e4
PH
1452PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1453 fread() to skip over the body file's header line, because in Cygwin the
1454 header line is locked and is inaccessible.
1455
1ab52c69
PH
1456PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1457 co-exist for some time) to make it clear that it is the Exim ID that is
1458 referenced, not the Message-ID: header line.
1459
b07e6aa3
PH
1460PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1461 string_format() function, because snprintf() does not exist on all
1462 operating systems.
1463
254e032f
PH
1464PH/06 The use of forbid_filter_existstest now also locks out the use of the
1465 ${stat: expansion item.
1466
3af76a81
PH
1467PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1468 protocol synchronization error", to keep the pedants happy.
1469
2548ba04
PH
1470PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1471 well as for IRIX systems, when gcc is being used. See the host.c source
1472 file for comments.
1473
b6c6011d
PH
1474PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1475
cf39cf57
PH
1476PH/10 Named domain lists were not working if used in a queue_smtp_domains
1477 setting.
1478
f1513293
PH
1479PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1480 transport and to the smtp transport in LMTP mode.
1481
727549a4
PH
1482TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1483
af46795e
PH
1484PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1485 run a filter in a subprocess. This could lead to confusion in subsequent
1486 lookups in the parent process. There should also be a search_tidyup() at
1487 the end of the subprocess.
1488
d7b47fd0
PH
1489PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1490 only if the host matched helo_try_verify_hosts, which caused the
1491 verification to occur when the EHLO/HELO command was issued. The ACL just
1492 tested the remembered result. Now, if a previous verification attempt has
1493 not happened, "verify = helo" does it there and then.
1494
ee744174
JJ
1495JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1496
b582ab87
PH
1497TK/03 Fix log output including CR from clamd.
1498
41a13e0a
PH
1499PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1500 exist provoked a memory error which could cause a segfault.
1501
f625cc5a
PH
1502PH/15 Installed PCRE 6.2
1503
1504PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1505
21f7af35
PH
1506PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1507 of the problem. Specifically, suggested +O2 rather than +O1 for the
1508 HP-UX compiler.
1509
31480e42
PH
1510PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1511
2d280592
PH
1512PH/20 If a delivery was routed to a non-standard port by means of an SRV
1513 record, the port was not correctly logged when the outgoing_port log
1514 selector was set (it logged the transort's default port).
1515
7cd1141b
PH
1516PH/21 Added support for host-specific ports to manualroute, queryprogram,
1517 fallback_hosts, and "hosts" in the smtp transport.
1518
1519PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1520 host errors such as "Connection refused".
1521
750af86e
PH
1522PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1523 authentication with radiusclient 0.4.9:
1524
1525 - Error returned from rc_read_config was caught wrongly
1526 - Username/password not passed on to radius server due to wrong length.
1527
1528 The presumption is that some radiusclient API changes for 4.51/PH/17
1529 were not taken care of correctly. The code is still untested by me (my
1530 Linux distribution still has 0.3.2 of radiusclient), but it was
1531 contributed by a Radius user.
1532
1533PH/24 When doing a callout, the value of $domain wasn't set correctly when
1534 expanding the "port" option of the smtp transport.
1535
4304270b
TK
1536TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1537 while reading a MIME header. Thanks to Tom Hughes for a patch.
1538
750af86e
PH
1539PH/24 Include config.h inside local_scan.h so that configuration settings are
1540 available.
1541
64ffc24f
PH
1542PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1543 that in an ACL for RCPT (for example), you can examine exactly what was
1544 received.
1545
5dd9625b
PH
1546PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1547 commands, but it was not correctly comparing the address with the actual
1548 client host address. Thus, it would show the EHLO address in Received:
1549 header lines when this was not necessary.
1550
5591031b
PH
1551PH/27 Added the % operator to ${eval:}.
1552
ba18e66a
PH
1553PH/28 Exim tries to create and chdir to its spool directory when it starts;
1554 it should be ignoring failures (because with -C, for example, it has lost
1555 privilege). It wasn't ignoring creation failures other than "already
1556 exists".
1557
9cec981f
PH
1558PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1559 -bV or -d is used.
1560
aa2b5c79
PH
1561PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1562 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1563 too many continuations, the temporary file was not being removed, and the
1564 return code was incorrect.
aa2b5c79 1565
48a53b7f
PH
1566PH/31 Missing "BOOL" in function definition in filtertest.c.
1567
1c59d63b
PH
1568PH/32 Applied Sieve patches from the maintainer.
1569
671012da
TK
1570TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1571
1509d3a8
PH
1572PH/33 Added "verify = not_blind".
1573
1574PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1575 Local/Makefile (with some defaults set). These are used in built scripts
1576 such as exicyclog, but they have never been used in the exim_install
1577 script (though there are many overriding facilities there). I have
1578 arranged that the exim_install script now takes note of these two
1579 settings.
1580
1581PH/35 Installed configuration files for Dragonfly.
1582
2fe1a124
PH
1583PH/36 When a locally submitted message by a trusted user did not contain a
1584 From: header, and the sender address was obtained from -f or from an SMTP
1585 MAIL command, and the trusted user did not use -F to supply a sender
1586 name, $originator_name was incorrectly used when constructing a From:
1587 header. Furthermore, $originator_name was used for submission mode
1588 messages from external hosts without From: headers in a similar way,
1589 which is clearly wrong.
1590
8800895a
PH
1591PH/37 Added control=suppress_local_fixups.
1592
ccfdb010
PH
1593PH/38 When log_selector = +received_sender was set, and the addition of the
1594 sender made the log line's construction buffer exactly full, or one byte
1595 less than full, an overflow happened when the terminating "\n" was
1596 subsequently added.
1597
1130bfb0
PH
1598PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1599 when the result of a list match is failure because a DNS lookup failed.
1600
ebcb507f
PH
1601PH/40 RM_COMMAND is now used in the building process.
1602
c35e155c
PH
1603PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1604 the "build-* directories that it finds.
1605
95d1f782
PH
1606PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1607 address in a domain literal was a prefix of an interface address.
1608
fd6de02e
PH
1609PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1610 when verifying a sender address, unless rewrite_headers is false.
1611
58de37c5
PH
1612PH/44 Wrote a long comment about why errors_to addresses are verified as
1613 recipients, not senders.
1614
261cf466
TF
1615TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1616 the ratelimit ACL was added.
1617
3ee512ff
PH
1618PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1619
e08c430f
PH
1620PH/46 Added extra information about PostgreSQL errors to the error string.
1621
bef5a11f
PH
1622PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1623 avoiding the need to install special zones in a real server. This is
1624 backwards compatible; if it can't find the fake resolver, it drops back.
1625 Thus, both old and new test suites can be run.
1626
7546de58
TF
1627TF/02 Added util/ratelimit.pl
1628
e5d5a95f
TF
1629TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1630 clock is set back in time.
1631
2e88a017
TF
1632TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1633 Candler <B.Candler@pobox.com>.
1634
a5f65aa4
TF
1635TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1636 OK for addresses that are the result of redirections.
1637
e7726cbf
PH
1638PH/48 A number of further additions for the benefit of the new test suite,
1639 including a fake gethostbyname() that interfaces to the fake DNS resolver
1640 (see PH/47 above).
1641
a7fdad5b
TF
1642TF/06 The fix for widen_domains has also been applied to qualify_single and
1643 search_parents which are the other dnslookup options that can cause
1644 header rewrites.
1645
6af56900
PH
1646PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1647 type ("H").
1648
0925ede6
PH
1649PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1650
66afa403
TF
1651TF/07 Exim produced the error message "an SRV record indicated no SMTP
1652 service" if it encountered an MX record with an empty target hostname.
1653 The message is now "an MX or SRV record indicated no SMTP service".
1654
0154e85a
TF
1655TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1656 if the DNS of the sending site is misconfigured. This is quite a
1657 common situation. This change restores the behaviour of treating a
1658 helo verification defer as a failure.
1659
16f12c76
PH
1660PH/51 If self=fail was set on a router, the bounce message did not include the
1661 actual error message.
1662
bbe902f0 1663
e5a9dba6
PH
1664Exim version 4.52
1665-----------------
1666
1667TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1668
22c3b60b
PH
1669PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1670 command itself ended in error, the underlying message about the transport
1671 filter timeout was being overwritten with the pipe command error. Now the
1672 underlying error message should be appended to the second error message.
1673
06a9b4b5
PH
1674TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1675
c1ac6996
PH
1676PH/02 Reduce the amount of output that "make" produces by default. Full output
1677 can still be requested.
1678
9c7a242c
PH
1679PH/03 The warning log line about a condition test deferring for a "warn" verb
1680 was being output only once per connection, rather than after each
1681 occurrence (because it was using the same function as for successful
1682 "warn" verbs). This seems wrong, so I have changed it.
1683
87ba3f5f
PH
1684TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1685 it should not have, which might have caused a crash in the right
1686 circumstances, but probably never did.
1687
1688PH/04 Installed a modified version of Tony Finch's patch to make submission
1689 mode fix the return path as well as the Sender: header line, and to
1690 add a /name= option so that you can make the user's friendly name appear
1691 in the header line.
1692
29aba418
TF
1693TF/03 Added the control = fakedefer ACL modifier.
1694
fe0dab11
TF
1695TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1696 Mark Lowes for thorough testing.
870f6ba8 1697
11d337a4
TK
1698TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1699
1700TK/03 Merged latest SRS patch from Miles Wilton.
1701
415c8f3b
PH
1702PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1703 with the definition in sysexits.h (which is #included earlier).
1704 Fortunately, Exim does not actually use EX_OK. The code used to try to
1705 preserve the sysexits.h value, by assumimg that macro definitions were
1706 scanned for macro replacements. I have been disabused of this notion,
1707 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1708
958541e9
PH
1709PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1710 in the smtp transport. When a block could not be written in a single
1711 write() function, the timeout was being re-applied to each part-write.
1712 This seems wrong - if the receiver was accepting one byte at a time it
1713 would take for ever. The timeout is now adjusted when this happens. It
1714 doesn't have to be particularly precise.
1715
c206415f
TK
1716TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1717 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1718
2a4be8f9
PH
1719PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1720 without a domain if the check to <postmaster@domain> fails.
1721
1cba11c5
SC
1722SC/01 Eximstats: added -xls and the ability to specify output files
1723 (patch written by Frank Heydlauf).
1724
1725SC/02 Eximstats: use FileHandles for outputing results.
1726
1727SC/03 Eximstats: allow any combination of xls, txt, and html output.
1728
1729SC/04 Eximstats: fixed display of large numbers with -nvr option
1730
1731SC/05 Eximstats: fixed merging of reports with empty tables.
1732
1733SC/06 Eximstats: added the -include_original_destination flag
1734
1735SC/07 Eximstats: removed tabs and trailing whitespace.
1736
1005d00e
TK
1737TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1738
1739TK/06 MBOX spool code: Add real "From " MBOX separator line
1740 so the .eml file is really in mbox format (even though
1741 most programs do not really care). Patch from Alex Miller.
1742
1743TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1744 The latter is generated from $received_to and is only set if the
1745 message has one envelope recipient. SA can use these headers,
1746 obviously out-of-the-box. Patch from Alex Miller.
1747
9b4768fa
PH
1748PH/08 The ${def test on a variable was returning false if the variable's
1749 value was "0", contrary to what the specification has always said!
1750 The result should be true unless the variable is empty.
1751
1752PH/09 The syntax error of a character other than { following "${if
1753 def:variable_name" (after optional whitespace) was not being diagnosed.
1754 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1755 accidental colon was present, for example, could give incorrect results.
1756
0d7eb84a
PH
1757PH/10 Tidied the code in a number of places where the st_size field of a stat()
1758 result is used (not including appendfile, where other changes are about
1759 to be made).
1760
1761PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1762 This involved changing a lot of size variables from int to off_t. It
1763 should work with maildirs and everything.
1764
40727bee
TK
1765TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1766 spamd dying while we are connected to it.
1767
554d2369
TF
1768TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1769 <jgh@wizmail.org>
1770
1f922db1
PH
1771PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1772 function for BDB 4.3.
1773
ef213c3b
PH
1774PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1775
8ac170f3
PH
1776PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1777 the sources for PCRE have been re-arranged and more files are now
1778 involved.
1779
b1c749bb
PH
1780PH/15 The code I had for printing potentially long long variables in PH/11
1781 above was not the best (it lost precision). The length of off_t variables
1782 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1783 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1784 to be "long long int" or "long int". This is needed for the internal
1785 formatting function string_vformat().
b1c749bb 1786
4aac9b49
PH
1787PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1788 the configuration file to be ":syslog", then the script "guesses" where
1789 the logs files are, rather than using the compiled in default. In our
1790 case the guess is not the same as the compiled default, so the script
1791 suddenly stopped working when I started to use syslog. The patch checks
1792 to see if log_file_path is "". If so, it attempts to read it from exim
1793 with no configuration file to get the compiled in version, before it
1794 falls back to the previous guessing code."
1795
294520c8
TK
1796TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1797 implementing BATV in an Exim configuration. See NewStuff for the gory
1798 details.
1799
5bd022fe
PH
1800PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1801 Makefile that are specific to HP-UX.
1802
90e9ce59
PH
1803PH/18 If the "use_postmaster" option was set for a recipient callout together
1804 with the "random" option, the postmaster address was used as the MAIL
1805 FROM address for the random test, but not for the subsequent recipient
1806 test. It is now used for both.
1807
5ea81592
PH
1808PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1809 patch removes a few documentation additions to RFC 3028, because the
1810 latest draft now contains them. It adds the new en;ascii-case comparator
1811 and a new error check for 8bit text in MIME parts. Comparator and
1812 require names are now matched exactly. I enabled the subaddress
1813 extension, but it is not well tested yet (read: it works for me)."
1814
c6c2dc1d
PH
1815PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1816 rework some of the code of TK/09 above to avoid the hardwired use of
1817 "%lld" and "long long". Replaced the call to snprintf() with a call to
1818 string_vformat().
1819
fffffe4c
PH
1820PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1821 records point to non-existent hosts", "retry timeout exceeded", and
1822 "retry time not reached for any host after a long failure period".
ca02eafb 1823
9a26b6b2
PH
1824PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1825 experimental DomainKeys support:
1826
1827 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1828 (2) On an error such as an illegally used "control", the wrong name for
1829 the control was given.
1830
1831 These problems did NOT occur unless DomainKeys support was compiled.
1832
4aee0225
PH
1833PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1834
32d668a5
PH
1835PH/24 Added ${if match_ip condition.
1836
8187c3f3
PH
1837PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1838 databases so that it will be absolutely obvious if a crash occurs in the
1839 DB library. This is a regular occurrence (often caused by mis-matched
1840 db.h files).
1841
ff790e47 1842PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1843 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1844 picked up on a user's system that detects such things. There doesn't seem
1845 to be a gcc warning option for this - only an attribute that has to be
1846 put on the function's prototype. It seems that in Fedora Core 4 they have
1847 set this on a number of new functions. No doubt there will be more in due
1848 course.
ff790e47 1849
5417f6d1
PH
1850PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1851 specify a transport. However, if an address that was verified by such a
1852 router was the subject of a callout, Exim crashed because it tried to
1853 read the rcpt_include_affixes from the non-existent transport. Now it
1854 just assumes that the setting of that option is false. This bug was
1855 introduced by 4.51/PH/31.
1856
59cf8544
PH
1857PH/28 Changed -d+all to exclude +memory, because that information is very
1858 rarely of interest, but it makes the output a lot bigger. People tend to
1859 do -d+all out of habit.
1860
e7ad8a65
PH
1861PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1862 code in os-type was giving problems when libc.so lives in lib64, like on
1863 x86_64 Fedora Core.
1864
ade42478
PH
1865PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1866 aren't the modern standard, and it seems that some systems' include files
1867 don't always have them. Exim was already checking for some of the newer
1868 ones like T_AAAA, and defining it itself. I've added checks for all the
1869 record types that Exim uses.
1870
182ad5cf
PH
1871PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1872 not automatically generating a new one, as it is supposed to. This
1873 prevented TLS from working. If the file did exist, but contained invalid
1874 data, a new version was generated, as expected. It was only the case of a
1875 non-existent file that was broken.
1876
b0d9fc80
TK
1877TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1878 with a change in libdomainkeys > 0.64.
1879
1880TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1881 from DNS. If the selector record carries the flag, it now has
1882 precedence over the domain-wide flag.
1883
1884TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1885
47c7a64a
PH
1886PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1887 the use of a port name that isn't defined in /etc/services) occurred, the
1888 message was deferred as in a normal delivery, and thus remained on the
1889 spool, instead of being failed because of the mua_wrapper setting. This
1890 is now fixed, and I tidied up some of the mua_wrapper messages at the
1891 same time.
1892
a388bce4
SC
1893SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1894 the messages in a hash of arrays rather than using individual hashes.
1895 This is a bit cleaner and results in dramatic memory savings, albeit
1896 at a slight CPU cost.
1897
1898SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1899 as requested by Marc Sherman.
1900
1901SC/10 Eximstats: added histograms for user specified patterns as requested
1902 by Marc Sherman.
1903
0793e4ed
SC
1904SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1905
c58b88df
PH
1906PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1907 fopen() in the content-scanning modules that did not already have it.
1908
e7ad8a65 1909
7982096b
PH
1910Exim version 4.51
1911-----------------
1912
1a46a8c5
PH
1913TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1914 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1915
2f079f46 1916TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1917
1918TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1919
1920PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1921 to test Sieve filters that use "vacation".
1922
1923PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1924 that changes the way the GnuTLS parameters are stored in the cache file.
1925 The new format can be generated externally. For backward compatibility,
1926 if the data in the cache doesn't make sense, Exim assumes it has read an
1927 old-format file, and it generates new data and writes a new file. This
1928 means that you can't go back to an older release without removing the
1929 file.
1930
1931PH/03 A redirect router that has both "unseen" and "one_time" set does not
1932 work if there are any delivery delays because "one_time" forces the
1933 parent to be marked "delivered", so its unseen clone is never tried
1934 again. For this reason, Exim now forbids the simultaneous setting of
1935 these two options.
1936
1937PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1938 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1939 entry if you want to know the details. The fix, however, neglected to
1940 consider the case when local delivery batching is involved. The test for
1941 "previously delivered" was not happening when checking to see if an
1942 address could be batched with a previous (undelivered) one; under
1943 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1944 address.
1a46a8c5
PH
1945
1946PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1947 in its include files, and this causes problems building Exim.
1948
1949PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1950 header_syntax) but Exim was just ignoring anything given after a slash.
1951 In particular, this caused confusion with an attempt to use "verify =
1952 reverse_host_lookup/defer_ok". An error is now given when options are
1953 supplied for verify items that do not have them. (Maybe reverse_host_
1954 lookup should have a defer_ok option, but that's a different point.)
1955
1956PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1957 defined by RFC 821) to 2048, because there were problems with some AUTH
1958 commands, and RFC 1869 says the size should be increased for extended
1959 SMTP commands that take arguments.
1960
1961PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1962 Finch).
1963
1964PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1965 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1966
49c2d5ea
PH
1967PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1968 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1969 whatever). Otherwise the password may appear in the log. Following change
1970 PH/42 below, there is no longer a chance of it appearing in a bounce
1971 message.
49c2d5ea 1972
bf759a8b
PH
1973PH/11 Installed exipick version 20050225.0 from John Jetmore.
1974
83364d30
PH
1975PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1976 of its addresses was ever tried. (Bugzilla bug #2.)
1977
7999bbd7
PH
1978PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1979 the result incorrectly in the debug output. (It correctly added a newline
1980 to what was transported.)
1981
7dbf77c9
PH
1982TF/01 Added $received_time.
1983
74e0617f
PH
1984PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1985 commented out examples of how to interface to a virus scanner and to
1986 SpamAssassin. Also added commented examples of av_scanner and
1987 spamd_address settings.
1988
2f079f46
PH
1989PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1990 and controls are allowed in which ACLs. There were a couple of minor
1991 errors. Some of the entries in the conditions table (which is a table of
1992 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1993 negation of where the condition IS allowed.
1994
8c841523
PH
1995PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1996
7766a4f0
PH
1997PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1998 header file does not have a version number, so I've had to invent a new
1999 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2000 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2001 radiusclient), but it was contributed by a Radius user.
2002
8b417f2c
PH
2003PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2004 files or directories, for OpenSSL.
2005
901f42cb
PH
2006PH/19 When an Exim process that is running as root has to create an Exim log
2007 file, it does so in a subprocess that runs as exim:exim so as to get the
2008 ownership right at creation (otherwise, other Exim processes might see
2009 the file with the wrong ownership). There was no test for failure of this
2010 fork() call, which would lead to the process getting stuck as it waited
2011 for a non-existent subprocess. Forks do occasionally fail when resources
2012 run out. I reviewed all the other calls to fork(); they all seem to check
2013 for failure.
2014
f9b9210e
PH
2015PH/20 When checking for unexpected SMTP input at connect time (before writing
2016 the banner), Exim was not dealing correctly with a non-positive return
2017 from the read() function. If the client had disconnected by this time,
2018 the result was a log entry for a synchronization error with an empty
2019 string after "input=" when read() returned zero. If read() returned -1
2020 (an event I could not check), uninitialized data bytes were printed.
2021 There were reports of junk text (parts of files, etc) appearing after
2022 "input=".
2023
54cdb463
PH
2024PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2025
cf00dad6
PH
2026PH/22 Added support for macro redefinition, and (re)definition in between
2027 driver and ACL definitions.
2028
acb1b346
PH
2029PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2030 forgetting to use the resulting value; it was using the unexpanded value.
2031
c5ddb310
PH
2032PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2033 hadn't been configured. The fix is from Juergen Kreileder, who
2034 understands it better than I do:
2035
2036 "Here's what I see happening with three configured cyrus_sasl
2037 authenticators configured (plain, login, cram-md5):
2038
2039 On startup auth_cyrus_sasl_init() gets called for each of these.
2040 This means three calls to sasl_listmech() without a specified mech_list.
2041 => SASL tests which mechs of all available mechs actually work
2042 => three warnings about OTP not working
2043 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2044
2045 With the patch, sasl_listmech() also gets called three times. But now
2046 SASL's mech_list option is set to the server_mech specified in the the
2047 authenticator. Or in other words, the answer from sasl_listmech()
2048 gets limited to just the mech you're testing for (which is different
2049 for each call.)
2050 => the return list contains just 'plain' or 'login', 'cram-md5' or
2051 nothing depending on the value of ob->server_mech.
2052
2053 I've just tested the patch: Authentication still works fine,
2054 unavailable mechs specified in the exim configuration are still
2055 caught, and the auth.log warnings about OTP are gone."
2056
31619da6
PH
2057PH/25 When debugging is enabled, the contents of the command line are added
2058 to the debugging output, even when log_selector=+arguments is not
2059 specified.
2060
bebaf0fc
PH
2061PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2062 answer is "GNU", and only if the return is "GNU/something" is the answer
2063 "Linux".
2064
475fe28a
PH
2065PH/27 $acl_verify_message is now set immediately after the failure of a
2066 verification in an ACL, and so is available in subsequent modifiers. In
2067 particular, the message can be preserved by coding like this:
2068
2069 warn !verify = sender
2070 set acl_m0 = $acl_verify_message
2071
2072 Previously, $acl_verify_message was set only while expanding "message"
2073 and "log_message" when a very denied access.
2074
7e8bec7a
PH
2075PH/28 Modified OS/os.c-Linux with
2076
2077 -#ifndef OS_LOAD_AVERAGE
2078 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2079
2080 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2081 nomenclature these days.)
2082
e4a89c47
PH
2083PH/29 Installed patch from the Sieve maintainer that adds the options
2084 sieve_useraddress and sieve_subaddress to the redirect router.
2085
5ca2a9a1
PH
2086PH/30 In these circumstances:
2087 . Two addresses routed to the same list of hosts;
2088 . First host does not offer TLS;
2089 . First host accepts first address;
2090 . First host gives temporary error to second address;
2091 . Second host offers TLS and a TLS session is established;
2092 . Second host accepts second address.
2093 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2094 and peerdn, if requested) that were in fact used only for the second
2095 address.
7e8bec7a 2096
c688b954
PH
2097PH/31 When doing a callout as part of verifying an address, Exim was not paying
2098 attention to any local part prefix or suffix that was matched by the
2099 router that accepted the address. It now behaves in the same way as it
2100 does for delivery: the affixes are removed from the local part unless
2101 rcpt_include_affixes is set on the transport.
2102
fed77020
PH
2103PH/32 Add the sender address, as F=<...>, to the log line when logging a
2104 timeout during the DATA phase of an incoming message.
2105
7fe1560f
PH
2106PH/33 Sieve envelope tests were broken for match types other than :is. I have
2107 applied a patch sanctioned by the Sieve maintainer.
c688b954 2108
ebb6e6d5
PH
2109PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2110 the uid or gid is negative. A case of a negative gid caused this to be
2111 noticed. The fix allows for either to be negative.
2112
9c4e8f60
PH
2113PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2114 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2115 overlooked.
2116
2117PH/36 The change PH/12 above was broken. Fixed it.
2118
d7174846
PH
2119PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2120 the grounds that routing the same address twice would always produce the
2121 same answer. This might have been true once, but it is certainly no
2122 longer true now. Routing a child address may depend on the previous
2123 routing that produced that child. Some complicated redirection strategies
2124 went wrong when messages had multiple recipients, and made Exim's
2125 behaviour dependent on the order in which the addresses were given.
2126
2127 I have moved the duplicate checking until after the routing is complete.
2128 Exim scans the addresses that are assigned to local and remote
2129 transports, and removes any duplicates. This means that more work will be
2130 done, as duplicates will always all be routed, but duplicates are
2131 presumably rare, so I don't expect this is of any significance.
2132
2133 For deliveries to pipes, files, and autoreplies, the duplicate checking
2134 still happens during the routing process, since they are not going to be
2135 routed further.
2136
cfe75fc3
PH
2137PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2138 It corrects a timeout issue with spamd. This is Ian's comment: "The
2139 background is that sometimes spamd either never reads data from a
2140 connection it has accepted, or it never writes response data. The exiscan
2141 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2142 blindly assumes that writes won't block so it may never time out."
2143
be22d70e
PH
2144PH/39 Allow G after quota size as well as K and M.
2145
0612b098
PH
2146PH/40 The value set for $authenticated_id in an authenticator may not contain
2147 binary zeroes or newlines because the value is written to log lines and
2148 to spool files. There was no check on this. Now the value is run through
2149 the string_printing() function so that such characters are converted to
2150 printable escape sequences.
2151
2e0c1448
PH
2152PH/41 $message_linecount is a new variable that contains the total number of
2153 lines in the message. Compare $body_linecount, which is the count for the
2154 body only.
2155
447d236c
PH
2156PH/42 Exim no longer gives details of delivery errors for specific addresses in
2157 bounce and delay warning messages, except in certain special cases, which
2158 are as follows:
2159
2160 (a) An SMTP error message from a remote host;
2161 (b) A message specified in a :fail: redirection;
2162 (c) A message specified in a "fail" command in a system filter;
2163 (d) A message specified in a FAIL return from the queryprogram router;
2164 (e) A message specified by the cannot_route_message router option.
2165
2166 In these cases only, Exim does include the error details in bounce and
2167 warning messages. There are also a few cases where bland messages such
2168 as "unrouteable address" or "local delivery error" are given.
2169
d20976dc
PH
2170PH/43 $value is now also set for the "else" part of a ${run expansion.
2171
f656d135
PH
2172PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2173 being worked on, but at least Exim now implements the latest version to
2174 play with."
2175
2e2a30b4
PH
2176PH/45 In a pipe transport, although a timeout while waiting for the pipe
2177 process to complete was treated as a delivery failure, a timeout while
2178 writing the message to the pipe was logged, but erroneously treated as a
2179 successful delivery. Such timeouts include transport filter timeouts. For
2180 consistency with the overall process timeout, these timeouts are now
2181 treated as errors, giving rise to delivery failures by default. However,
2182 there is now a new Boolean option for the pipe transport called
2183 timeout_defer, which, if set TRUE, converts the failures into defers for
2184 both kinds of timeout. A transport filter timeout is now identified in
2185 the log output.
2186
9176e9f0
PH
2187PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2188 systems where "make" and "gmake" are different, calling "gmake" at top
2189 level broke things. I've arranged for the value of $(MAKE) to be passed
2190 from the Makefile to this script so that it can call the same version of
2191 "make".
2192
7982096b 2193
bbe902f0
PH
2194A note about Exim versions 4.44 and 4.50
2195----------------------------------------
2196
2197Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2198changes of various kinds. As a consequence, a big documentation update was
2199needed. This delayed the release for rather longer than seemed good, especially
2200in the light of a couple of (minor) security issues. Therefore, the changes
2201that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2202release. So 4.44 and 4.50 are in effect two different branches that both start
2203from 4.43.
2204
2205I have left the 4.50 change log unchanged; it contains all the changes since
22064.43. The change log for 4.44 is below; many of its items are identical to
2207those for 4.50. This seems to be the most sensible way to preserve the
2208historical information.
2209
2210
f7b63901 2211Exim version 4.50
495ae4b0
PH
2212-----------------
2213
5fe762f6
PH
2214 1. Minor wording change to the doc/README.SIEVE file.
2215
139059f6 2216 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2217 computation of the current number of files was incorrect.
495ae4b0 2218
7086e875
PH
2219 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2220 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2221 place.
2222
35af9f61
PH
2223 4. Give more explanation in the error message when the command for a transport
2224 filter fails to execute.
2225
b668c215
PH
2226 5. There are several places where Exim runs a non-Exim command in a
2227 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2228 was being done only for the command run by the queryprogram router. It is
2229 now done for all such subprocesses. The other cases are: ${run, transport
2230 filters, and the commands run by the lmtp and pipe transports.
2231
a494b1e1
PH
2232 6. Added CONFIGURE_GROUP build-time option.
2233
2234 7. Some older OS have a limit of 256 on the maximum number of file
2235 descriptors. Exim was using setrlimit() to set 1000 as a large value
2236 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2237 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2238
c5fcb476
PH
2239 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2240 was an oversight, and furthermore, ever since the addition of extra
2241 controls (e.g. 4.43/32), the checks on when to allow different forms of
2242 "control" were broken. There should now be diagnostics for all cases when a
2243 control that does not make sense is encountered.
2244
69358f02
PH
2245 9. Added the /retain_sender option to "control=submission".
2246
5be20824
PH
224710. $recipients is now available in the predata ACL (oversight).
2248
eb2c0248
PH
224911. Tidy the search cache before the fork to do a delivery from a message
2250 received from the command line. Otherwise the child will trigger a lookup
2251 failure and thereby defer the delivery if it tries to use (for example) a
2252 cached ldap connection that the parent has called unbind on.
2253
2a3eea10
PH
225412. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2255 of $address_data from the recipient verification was clobbered by the
2256 sender verification.
2257
225813. The value of address_data from a sender verification is now available in
2259 $sender_address_data in subsequent conditions in the ACL statement.
2260
23c7ff99
PH
226114. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2262
4deaf07d
PH
226315. Added a new option "connect=<time>" to callout options, to set a different
2264 connection timeout.
2265
926e1192
PH
226616. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2267 was its contents. (It was OK if the option was not defined at all.)
2268
650edc6f
PH
226917. A "Completed" log line is now written for messages that are removed from
2270 the spool by the -Mrm option.
2271
2c7db3f5
PH
227218. New variables $sender_verify_failure and $recipient_verify_failure contain
2273 information about exactly what failed.
2274
3d235903
PH
227519. Added -dd to debug only the daemon process.
2276
7c7ad977
PH
227720. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2278 handles timeouts, both on the server side and network timeouts. Renamed the
2279 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2280
981756db
PH
228121. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2282 It is now set to "smtps".
2283
d4eb88df
PH
228422. $host_address is now set to the target address during the checking of
2285 ignore_target_hosts.
2286
228723. When checking ignore_target_hosts for an ipliteral router, no host name was
2288 being passed; this would have caused $sender_host_name to have been used if
2289 matching the list had actually called for a host name (not very likely,
2290 since this list is usually IP addresses). A host name is now passed as
2291 "[x.x.x.x]".
2292
7d468ab8
PH
229324. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2294 code that specifies a non-restarting handler (typically sigaction() in
2295 modern systems) in an attempt to fix a rare and obscure crash bug.
2296
229725. Narrowed the window for a race in the daemon that could cause it to ignore
2298 SIGCHLD signals. This is not a major problem, because they are used only to
2299 wake it up if nothing else does.
2300
62c0818f
PH
230126. A malformed maildirsize file could cause Exim to calculate negative values
2302 for the mailbox size or file count. Odd effects could occur as a result.
2303 The maildirsize information is now recalculated if the size or filecount
2304 end up negative.
2305
26034054
PH
230627. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2307 support for a long time. Removed HAVE_SYS_VFS_H.
2308
af66f652
PH
230928. Installed the latest version of exipick from John Jetmore.
2310
90af77f4
PH
231129. In an address list, if the pattern was not a regular expression, an empty
2312 subject address (from a bounce message) matched only if the pattern was an
2313 empty string. Non-empty patterns were not even tested. This was the wrong
2314 because it is perfectly reasonable to use an empty address as part of a
2315 database query. An empty address is now tested by patterns that are
2316 lookups. However, all the other forms of pattern expect the subject to
2317 contain a local part and a domain, and therefore, for them, an empty
2318 address still always fails if the pattern is not itself empty.
2319
d8ef3577
PH
232030. Exim went into a mad DNS loop when attempting to do a callout where the
2321 host was specified on an smtp transport, and looking it up yielded more
2322 than one IP address.
2323
5cb8cbc6
PH
232431. Re-factored the code for checking spool and log partition space into a
2325 function that finds that data and another that does the check. The former
2326 is then used to implement four new variables: $spool_space, $log_space,
2327 $spool_inodes, and $log_inodes.
2328
14702f5b
PH
232932. The RFC2047 encoding function was originally intended for short strings
2330 such as real names; it was not keeping to the 75-character limit for
2331 encoded words that the RFC imposes. It now respects the limit, and
2332 generates multiple encoded words if necessary. To be on the safe side, I
2333 have increased the buffer size for the ${rfc2047: expansion operator from
2334 1024 to 2048 bytes.
2335
063b1e99
PH
233633. It is now permitted to omit both strings after an "if" condition; if the
2337 condition is true, the result is "true". As before, when the second string
2338 is omitted, a false condition yields an empty string. This makes it less
2339 cumbersome to write custom ACL and router conditions.
2340
652e1b65
PH
234134. Failure to deliver a bounce message always caused it to be frozen, even if
2342 there was an errors_to setting on the router. The errors_to setting is now
2343 respected.
2344
6f0c9a4f
PH
234535. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2346 canonical form (fully expanded) before being placed in
2347 $sender_host_address.
2348
33397d19
PH
234936. The table in the code that translates DNS record types into text (T_A to
2350 "A" for instance) was missing entries for NS and CNAME. It is just possible
2351 that this could have caused confusion if both these types were looked up
2352 for the same domain, because the text type is used as part of Exim's
2353 per-process caching. But the chance of anyone hitting this buglet seems
2354 very small.
2355
7bb56e1f
PH
235637. The dnsdb lookup has been extended in a number of ways.
2357
2358 (1) There is a new type, "zns", which walks up the domain tree until it
2359 finds some nameserver records. It should be used with care.
2360
ea3bc19b
PH
2361 (2) There is a new type, "mxh", which is like "mx" except that it returns
2362 just the host names, not the priorities.
2363
2364 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2365 looked up. The behaviour when one of the lookups defers can be
2366 controlled by a keyword.
7bb56e1f 2367
ea3bc19b 2368 (4) It is now possible to specify the separator character for use when
7bb56e1f 2369 multiple records are returned.
33397d19 2370
0bcb2a0e
PH
237138. The dnslists ACL condition has been extended: it is now possible to supply
2372 a list of IP addresses and/or domains to be looked up in a particular DNS
2373 domain.
2374
2ac0e484
PH
237539. Added log_selector=+queue_time_overall.
2376
4e1fde53
PH
237740. When running the queue in the test harness, wait just a tad after forking a
2378 delivery process, to get repeatability of debugging output.
2379
de365ded
PH
238041. Include certificate and key file names in error message when GnuTLS fails
2381 to set them up, because the GnuTLS error message doesn't include the name
2382 of the failing file when there is a problem reading it.
2383
f05da2e8
PH
238442. Allow both -bf and -bF in the same test run.
2385
d6453af2
PH
238643. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2387
f7b63901
PH
238844. The "Exiscan patch" is now merged into the mainline Exim source.
2389
239045. Sometimes the final signoff response after QUIT could fail to get
2391 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2392 < 0 before doing a fflush(). This bug looks as though it goes back to the
2393 introduction of TLS in release 3.20, but "sometimes" must have been rare
2394 because the tests only now provoked it.
2395
a444213a
PH
239646. Reset the locale to "C" after calling embedded Perl, in case it was changed
2397 (this can affect the format of dates).
2398
0ec020ea
PH
239947. exim_tidydb, when checking for the continued existence of a message for
2400 which it has found a message-specific retry record, was not finding
2401 messages that were in split spool directories. Consequently, it was
2402 deleting retry records that should have stayed in existence.
2403
b1206957
PH
240448. Steve fixed some bugs in eximstats.
2405
240649. The SPA authentication driver was not abandoning authentication and moving
2407 on to the next authenticator when an expansion was forced to fail,
2408 contradicting the general specification for all authenticators. Instead it
2409 was generating a temporary error. It now behaves as specified.
2410
26dd5a95
PH
241150. The default ordering of permitted cipher suites for GnuTLS was pessimal
2412 (the order specifies the preference for clients). The order is now AES256,
2413 AES128, 3DES, ARCFOUR128.
2414
343b2385
PH
241551. Small patch to Sieve code - explicitly set From: when generating an
2416 autoreply.
2417
1c5466b9
PH
241852. Exim crashed if a remote delivery caused a very long error message to be
2419 recorded - for instance if somebody sent an entire SpamAssassin report back
2420 as a large number of 550 error lines. This bug was coincidentally fixed by
2421 increasing the size of one of Exim's internal buffers (big_buffer) that
2422 happened as part of the Exiscan merge. However, to be on the safe side, I
2423 have made the code more robust (and fixed the comments that describe what
2424 is going on).
2425
55ee9ee3
PH
242653. Now that there can be additional text after "Completed" in log lines (if
2427 the queue_time_overall log selector is set), a one-byte patch to exigrep
2428 was needed to allow it to recognize "Completed" as not the last thing in
2429 the line.
2430
d38f8232
PH
243154. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2432 patch that reportedly fixes this has been added. I am not expert enough to
2433 create a test for it. This is what the patch creator wrote:
2434
2435 "I found a little strange behaviour of ldap code when working with
2436 Windows 2003 AD Domain, where users was placed in more than one
2437 Organization Units. When I tried to give exim partial DN, the exit code
2438 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2439 But simultaneously result of request was absolutely normal ldap result,
2440 so I produce this patch..."
2441
3295e65b
PH
2442 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2443 REFERENCE, so I have modified the code to exclude the patch when that macro
2444 is not defined.
2445
7102e136
PH
244655. Some experimental protocols are using DNS PTR records for new purposes. The
2447 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2448 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2449 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2450 CAN-2005-0021
7102e136 2451
3ca0ba97
PH
245256. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2453
c2bcbe20
PH
245457. Double the size of the debug message buffer (to 2048) so that more of very
2455 long debug lines gets shown.
2456
18ce445d
PH
245758. The exicyclog utility now does better if the number of log files to keep
2458 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2459
1f5b4c3d
PH
246059. Two changes related to the smtp_active_hostname option:
2461
2462 (1) $smtp_active_hostname is now available as a variable.
2463 (2) The default for smtp_banner uses $smtp_active_hostname instead
2464 of $primary_hostname.
2465
b975ba52
PH
246660. The host_aton() function is supposed to be passed a string that is known
2467 to be a valid IP address. However, in the case of IPv6 addresses, it was
2468 not checking this. This is a hostage to fortune. Exim now panics and dies
2469 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2470 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2471 components; fortuitously, this particular loophole had already been fixed
2472 by change 4.50/55 above.
2473
2474 If there are any other similar loopholes, the new check in host_aton()
2475 itself should stop them being exploited. The report I received stated that
2476 data on the command line could provoke the exploit when Exim was running as
2477 exim, but did not say which command line option was involved. All I could
2478 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2479 running as the user.
ea3a6f44 2480 CAN-2005-0021
85b87bc2
PH
2481
248261. There was a buffer overflow vulnerability in the SPA authentication code
2483 (which came originally from the Samba project). I have added a test to the
2484 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2485 CAN-2005-0022
b975ba52 2486
17ffcae7
PH
248762. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2488 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2489
d95f9fdb
PH
249063. The daemon start-up calls getloadavg() while still root for those OS that
2491 need the first call to be done as root, but it missed one case: when
2492 deliver_queue_load_max is set with deliver_drop_privilege. This is
2493 necessary for the benefit of the queue runner, because there is no re-exec
2494 when deliver_drop_privilege is set.
2495
86b8287f
PH
249664. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2497 This has been fixed.
2498
60dc5e56
PH
249965. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2500 was in use, was not putting the data itself into the right store pool;
2501 consequently, it could be overwritten for a subsequent message in the same
2502 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2503 the caching.)
2504
533244af
PH
250566. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2506
a5a28604
PH
250767. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2508 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2509 the function were treating the return as a boolean value, which happened to
2510 work because 0=false and not-0=true, but is not correct code.
2511
7e634d24
PH
251268. The host_aton() function was not handling scoped IPv6 addresses (those
2513 with, for example, "%eth0" on the end) correctly.
2514
3e11c26b
PH
251569. Fixed some compiler warnings in acl.c for the bitmaps specified with
2516 negated items (that is, ~something) in unsigned ints. Some compilers
2517 apparently mutter when there is no cast.
2518
6729cf78
PH
251970. If an address verification called from an ACL failed, and did not produce a
2520 user-specific message (i.e. there was only a "system" message), nothing was
2521 put in $acl_verify_message. In this situation, it now puts the system
2522 message there.
2523
00f00ca5
PH
252471. Change 4.23/11 added synchronization checking at the start of an SMTP
2525 session; change 4.31/43 added the unwanted input to the log line - except
2526 that it did not do this in the start of session case. It now does.
2527
c9bdd01c
PH
252872. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2529 This is wrong and can cause the other end to generate a synchronization
2530 error if it is another Exim or anything else that does the synchronization
2531 check. A QUIT command is no longer sent after a timeout.
2532
d43194df
PH
253373. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2534 during host lookups.
2535
fe5b5d0b
PH
253674. The defer_ok option of callout verification was not working if it was used
2537 when verifying addresses in header lines, that is, for this case:
2538
2539 verify = header_sender/callout=defer_ok
2540
76a2d7ba
PH
254175. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2542 those file descriptors could be used for SMTP connections. If anything
2543 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2544 could be sent to the SMTP client, causing chaos. The daemon now opens
2545 stdin, stdout, and stderr to /dev/null when it puts itself into the
2546 background.
2547
254876. Arrange for output from Perl's "warn" command to be written to Exim's main
2549 log by default. The user can override this with suitable Perl magic.
2550
04f7d5b9
PH
255177. The use of log_message on a "discard" ACL verb, which is supposed to add to
2552 the log message when discard triggers, was not working for the DATA ACL or
2553 for the non-SMTP ACL.
2554
bc60667e
PH
255578. Error message wording change in sieve.c.
2556
bb6e88ff
PH
255779. If smtp_accept_max_per_host was set, the number of connections could be
2558 restricted to fewer than expected, because the daemon was trying to set up
2559 a new connection before checking whether the processes handling previous
2560 connections had finished. The check for completed processes is now done
2561 earlier. On busy systems, this bug wouldn't be noticed because something
2562 else would have woken the daemon, and it would have reaped the completed
2563 process earlier.
2564
1e70f85b
PH
256580. If a message was submitted locally by a user whose login name contained one
2566 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2567 It caused a spool format error. I have fixed the spool reading code. A
2568 related problem was that the "from" clause in the Received: line became
2569 illegal because of the space(s). It is now covered by ${quote_local_part.
2570
257181. Included the latest eximstats from Steve (adds average sizes to HTML Top
2572 tables).
2573
4e01f9d6
PH
257482. Updated OS/Makefile-AIX as per message from Mike Meredith.
2575
1ee1cef2
PH
257683. Patch from Sieve maintainer to fix unterminated string problem in
2577 "vacation" handling.
2578
6e2b4ccc
PH
257984. Some minor changes to the Linux configuration files to help with other
2580 OS variants using glibc.
2581
8e669ac1
PH
258285. One more patch for Sieve to update vacation handling to latest spec.
2583
495ae4b0 2584
bbe902f0
PH
2585----------------------------------------------------
2586See the note above about the 4.44 and 4.50 releases.
2587----------------------------------------------------
2588
2589
2590Exim version 4.44
2591-----------------
2592
2593 1. Change 4.43/35 introduced a bug that caused file counts to be
2594 incorrectly computed when quota_filecount was set in an appendfile
2595 transport
2596
2597 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2598 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2599 place.
2600
2601 3. Give more explanation in the error message when the command for a transport
2602 filter fails to execute.
2603
2604 4. There are several places where Exim runs a non-Exim command in a
2605 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2606 was being done only for the command run by the queryprogram router. It is
2607 now done for all such subprocesses. The other cases are: ${run, transport
2608 filters, and the commands run by the lmtp and pipe transports.
2609
2610 5. Some older OS have a limit of 256 on the maximum number of file
2611 descriptors. Exim was using setrlimit() to set 1000 as a large value
2612 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2613 systems. I've change it so that if it can't get 1000, it tries for 256.
2614
2615 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2616 was an oversight, and furthermore, ever since the addition of extra
2617 controls (e.g. 4.43/32), the checks on when to allow different forms of
2618 "control" were broken. There should now be diagnostics for all cases when a
2619 control that does not make sense is encountered.
2620
2621 7. $recipients is now available in the predata ACL (oversight).
2622
2623 8. Tidy the search cache before the fork to do a delivery from a message
2624 received from the command line. Otherwise the child will trigger a lookup
2625 failure and thereby defer the delivery if it tries to use (for example) a
2626 cached ldap connection that the parent has called unbind on.
2627
2628 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2629 of $address_data from the recipient verification was clobbered by the
2630 sender verification.
2631
263210. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2633 was its contents. (It was OK if the option was not defined at all.)
2634
263511. A "Completed" log line is now written for messages that are removed from
2636 the spool by the -Mrm option.
2637
263812. $host_address is now set to the target address during the checking of
2639 ignore_target_hosts.
2640
264113. When checking ignore_target_hosts for an ipliteral router, no host name was
2642 being passed; this would have caused $sender_host_name to have been used if
2643 matching the list had actually called for a host name (not very likely,
2644 since this list is usually IP addresses). A host name is now passed as
2645 "[x.x.x.x]".
2646
264714. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2648 code that specifies a non-restarting handler (typically sigaction() in
2649 modern systems) in an attempt to fix a rare and obscure crash bug.
2650
265115. Narrowed the window for a race in the daemon that could cause it to ignore
2652 SIGCHLD signals. This is not a major problem, because they are used only to
2653 wake it up if nothing else does.
2654
265516. A malformed maildirsize file could cause Exim to calculate negative values
2656 for the mailbox size or file count. Odd effects could occur as a result.
2657 The maildirsize information is now recalculated if the size or filecount
2658 end up negative.
2659
266017. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2661 support for a long time. Removed HAVE_SYS_VFS_H.
2662
ea3a6f44 266318. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2664
266519. Allow an empty sender to be matched against a lookup in an address list.
2666 Previously the only cases considered were a regular expression, or an
2667 empty pattern.
2668
266920. Exim went into a mad DNS lookup loop when doing a callout where the
2670 host was specified on the transport, if the DNS lookup yielded more than
2671 one IP address.
2672
ea3a6f44
NM
267321. The RFC2047 encoding function was originally intended for short strings
2674 such as real names; it was not keeping to the 75-character limit for
2675 encoded words that the RFC imposes. It now respects the limit, and
2676 generates multiple encoded words if necessary. To be on the safe side, I
2677 have increased the buffer size for the ${rfc2047: expansion operator from
2678 1024 to 2048 bytes.
bbe902f0 2679
ea3a6f44
NM
268022. Failure to deliver a bounce message always caused it to be frozen, even if
2681 there was an errors_to setting on the router. The errors_to setting is now
2682 respected.
bbe902f0
PH
2683
268423. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2685 canonical form (fully expanded) before being placed in
2686 $sender_host_address.
2687
268824. Updated eximstats to version 1.33
2689
ea3a6f44
NM
269025. Include certificate and key file names in error message when GnuTLS fails
2691 to set them up, because the GnuTLS error message doesn't include the name
2692 of the failing file when there is a problem reading it.
bbe902f0
PH
2693
269426. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2695 As per change 25.
bbe902f0 2696
ea3a6f44
NM
269727. Reset the locale to "C" after calling embedded Perl, in case it was changed
2698 (this can affect the format of dates).
bbe902f0 2699
ea3a6f44
NM
270028. exim_tidydb, when checking for the continued existence of a message for
2701 which it has found a message-specific retry record, was not finding
2702 messages that were in split spool directories. Consequently, it was
2703 deleting retry records that should have stayed in existence.
bbe902f0
PH
2704
270529. eximstats updated to version 1.35
2706 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2707 1.35 - bugfix such that pie charts by volume are generated correctly
2708
ea3a6f44
NM
270930. The SPA authentication driver was not abandoning authentication and moving
2710 on to the next authenticator when an expansion was forced to fail,
2711 contradicting the general specification for all authenticators. Instead it
2712 was generating a temporary error. It now behaves as specified.
bbe902f0 2713
ea3a6f44
NM
271431. The default ordering of permitted cipher suites for GnuTLS was pessimal
2715 (the order specifies the preference for clients). The order is now AES256,
2716 AES128, 3DES, ARCFOUR128.
bbe902f0 2717
ea3a6f44
NM
271831. Small patch to Sieve code - explicitly set From: when generating an
2719 autoreply.
bbe902f0 2720
ea3a6f44
NM
272132. Exim crashed if a remote delivery caused a very long error message to be
2722 recorded - for instance if somebody sent an entire SpamAssassin report back
2723 as a large number of 550 error lines. This bug was coincidentally fixed by
2724 increasing the size of one of Exim's internal buffers (big_buffer) that
2725 happened as part of the Exiscan merge. However, to be on the safe side, I
2726 have made the code more robust (and fixed the comments that describe what
2727 is going on).
bbe902f0 2728
ea3a6f44
NM
272933. Some experimental protocols are using DNS PTR records for new purposes. The
2730 keys for these records are domain names, not reversed IP addresses. The
2731 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2732 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2733 CAN-2005-0021
2734
ea3a6f44
NM
273534. The host_aton() function is supposed to be passed a string that is known
2736 to be a valid IP address. However, in the case of IPv6 addresses, it was
2737 not checking this. This is a hostage to fortune. Exim now panics and dies
2738 if the condition is not met. A case was found where this could be provoked
2739 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2740 components; fortuitously, this particular loophole had already been fixed
2741 by change 4.50/55 or 4.44/33 above.
2742
2743 If there are any other similar loopholes, the new check in host_aton()
2744 itself should stop them being exploited. The report I received stated that
2745 data on the command line could provoke the exploit when Exim was running as
2746 exim, but did not say which command line option was involved. All I could
2747 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2748 running as the user.
bbe902f0
PH
2749 CAN-2005-0021
2750
ea3a6f44
NM
275135. There was a buffer overflow vulnerability in the SPA authentication code
2752 (which came originally from the Samba project). I have added a test to the
2753 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2754 CAN-2005-0022
2755
ea3a6f44
NM
275636. The daemon start-up calls getloadavg() while still root for those OS that
2757 need the first call to be done as root, but it missed one case: when
2758 deliver_queue_load_max is set with deliver_drop_privilege. This is
2759 necessary for the benefit of the queue runner, because there is no re-exec
2760 when deliver_drop_privilege is set.
bbe902f0 2761
ea3a6f44
NM
276237. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2763 was in use, was not putting the data itself into the right store pool;
2764 consequently, it could be overwritten for a subsequent message in the same
2765 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2766 the caching.)
bbe902f0 2767
ea3a6f44
NM
276838. Sometimes the final signoff response after QUIT could fail to get
2769 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2770 < 0 before doing a fflush(). This bug looks as though it goes back to the
2771 introduction of TLS in release 3.20, but "sometimes" must have been rare
2772 because the tests only now provoked it.
bbe902f0
PH
2773
2774
495ae4b0
PH
2775Exim version 4.43
2776-----------------
2777
2778 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2779 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2780 Now it returns an integer. A number of calls were still expecting a T/F
2781 return. Fortuitously, in all cases, the tests worked in OK situations,
2782 which is the norm. However, things would have gone wrong on any write
2783 failures on the smtp file descriptor. This function is used when sending
2784 messages over SMTP and also when doing verify callouts.
2785
2786 2. When Exim is called to do synchronous delivery of a locally submitted
2787 message (the -odf or -odi options), it no longer closes stderr before doing
2788 the delivery.
2789
2790 3. Implemented the mua_wrapper option.
2791
2792 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2793
2794 5. Implemented the functions header_remove(), header_testname(),
2795 header_add_at_position(), and receive_remove_recipient(), and exported them
2796 to local_scan().
2797
2798 6. If an ACL "warn" statement specified the addition of headers, Exim already
2799 inserted X-ACL-Warn: at the start if there was no header name. However, it
2800 was not making this test for the second and subsequent header lines if
2801 there were newlines in the string. This meant that an invalid header could
2802 be inserted if Exim was badly configured.
2803
2804 7. Allow an ACL "warn" statement to add header lines at the start or after all
2805 the Received: headers, as well as at the end.
2806
2807 8. Added the rcpt_4xx retry error code.
2808
2809 9. Added postmaster_mailfrom=xxx to callout verification option.
2810
281110. Added mailfrom=xxxx to the callout verification option, for verify=
2812 header_sender only.
2813
281411. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2815 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2816
281712. Inserted some casts to stop certain compilers warning when using pointer
2818 differences as field lengths or precisions in printf-type calls (mostly
2819 affecting debugging statements).
2820
282113. Added optional readline() support for -be (dynamically loaded).
2822
282314. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2824 same clock tick as a message's arrival, so that its received time was the
2825 same as the "first fail" time on the retry record, and that message
2826 remained on the queue past the ultimate address timeout, every queue runner
2827 would try a delivery (because it was past the ultimate address timeout) but
2828 after another failure, the ultimate address timeout, which should have then
2829 bounced the address, did not kick in. This was a "< instead of <=" error;
2830 in most cases the first failure would have been in the next clock tick
2831 after the received time, and all would be well.
2832
283315. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2834 being recognized when the domain list was tested by the match_domain
2835 condition in an expansion string.
2836
283716. Added the ${str2b64: operator.
2838
283917. Exim was always calling setrlimit() to set a large limit for the number of
2840 processes, without checking whether the existing limit was already
2841 adequate. (It did check for the limit on file descriptors.) Furthermore,
2842 errors from getrlimit() and setrlimit() were being ignored. Now they are
2843 logged to the main and panic logs, but Exim does carry on, to try to do its
2844 job under whatever limits there are.
2845
284618. Imported PCRE 5.0.
2847
284819. Trivial typo in log message " temporarily refused connection" (the leading
2849 space).
2850
285120. If the log selector return_path_on_delivery was set and an address was
2852 redirected to /dev/null, the delivery process crashed because it assumed
2853 that a return path would always be set for a "successful" delivery. In this
2854 case, the whole delivery is bypassed as an optimization, and therefore no
2855 return path is set.
2856
285721. Internal re-arrangement: the function for sending a challenge and reading
2858 a response while authentication was assuming a zero-terminated challenge
2859 string. It's now changed to take a pointer and a length, to allow for
2860 binary data in such strings.
2861
286222. Added the cyrus_sasl authenticator (code supplied by MBM).
2863
286423. Exim was not respecting finduser_retries when seeking the login of the
2865 uid under which it was called; it was always trying 10 times. (The default
2866 setting of finduser_retries is zero.) Also, it was sleeping after the final
2867 failure, which is pointless.
2868
286924. Implemented tls_on_connect_ports.
2870
287125. Implemented acl_smtp_predata.
2872
287326. If the domain in control=submission is set empty, Exim assumes that the
2874 authenticated id is a complete email address when it generates From: or
2875 Sender: header lines.
2876
287727. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2878 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2879 chown and chgrp in /bin and hostname in /usr/bin.
2880
288128. Exim was keeping the "process log" file open after each use, just as it
2882 does for the main log. This opens the possibility of it remaining open for
2883 long periods when the USR1 signal hits a daemon. Occasional processlog
2884 errors were reported, that could have been caused by this. Anyway, it seems
2885 much more sensible not to leave this file open at all, so that is what now
2886 happens.
2887
288829. The long-running daemon process does not normally write to the log once it
2889 has entered its main loop, and it closes the log before doing so. This is
2890 so that log files can straightforwardly be renamed and moved. However,
2891 there are a couple of unusual error situations where the daemon does write
2892 log entries, and I had neglected to close the log afterwards.
2893
289430. The text of an SMTP error response that was received during a remote
2895 delivery was being truncated at 512 bytes. This is too short for some of
2896 the long messages that one sometimes sees. I've increased the limit to
2897 1024.
2898
289931. It is now possible to make retry rules that apply only when a message has a
2900 specific sender, in particular, an empty sender.
2901
290232. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2903 it possible to be selective about when SMTP synchronization is enforced.
2904
290533. Added "control = caseful_local_part" and "control = "caselower_local_part".
2906
290732. Implemented hosts_connection_nolog.
2908
290933. Added an ACL for QUIT.
2910
291134. Setting "delay_warning=" to disable warnings was not working; it gave a
2912 syntax error.
2913
291435. Added mailbox_size and mailbox_filecount to appendfile.
2915
291636. Added control = no_multiline_responses to ACLs.
2917
291837. There was a bug in the logic of the code that waits for the clock to tick
2919 in the case where the clock went backwards by a substantial amount such
2920 that the microsecond fraction of "now" was more than the microsecond
2921 fraction of "then" (but the whole seconds number was less).
2922
292338. Added support for the libradius Radius client library this is found on
2924 FreeBSD (previously only the radiusclient library was supported).
2925
2926
2927Exim version 4.42
2928-----------------
2929
2930 1. When certain lookups returned multiple values in the form name=value, the
2931 quoting of the values was not always being done properly. Specifically:
2932 (a) If the value started with a double quote, but contained no whitespace,
2933 it was not quoted.
2934 (b) If the value contained whitespace other than a space character (i.e.
2935 tabs or newlines or carriage returns) it was not quoted.
2936 This fix has been applied to the mysql and pgsql lookups by writing a
2937 separate quoting function and calling it from the lookup code. The fix
2938 should probably also be applied to nisplus, ibase and oracle lookups, but
2939 since I cannot test any of those, I have not disturbed their existing code.
2940
2941 2. A hit in the callout cache for a specific address caused a log line with no
2942 reason for rejecting RCPT. Now it says "Previous (cached) callout
2943 verification failure".
2944
2945 3. There was an off-by-one bug in the queryprogram router. An over-long
2946 return line was truncated at 256 instead of 255 characters, thereby
2947 overflowing its buffer with the terminating zero. As well as fixing this, I
2948 have increased the buffer size to 1024 (and made a note to document this).
2949
2950 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2951 when Exim is waiting for an SMTP response from a remote server, Exim
2952 restarts its select() call on the socket, thereby resetting its timeout.
2953 This is not a problem when such interrupts are rare. Somebody set up a cron
2954 job to run exiwhat every 2 minutes, which is less than the normal select()
2955 timeout (5 or 10 minutes). This meant that the select() timeout never
2956 kicked in because it was always reset. I have fixed this by comparing the
2957 time when an interrupt arrives with the time at the start of the first call
2958 to select(). If more time than the timeout has elapsed, the interrupt is
2959 treated as a timeout.
2960
2961 5. Some internal re-factoring in preparation for the addition of Sieve
2962 extensions (by MH). In particular, the "personal" test is moved to a
2963 separate function, and given an option for scanning Cc: and Bcc: (which is
2964 not set for Exim filters).
2965
2966 6. When Exim created an email address using the login of the caller as the
2967 local part (e.g. when creating a From: or Sender: header line), it was not
2968 quoting the local part when it contained special characters such as @.
2969
2970 7. Installed new OpenBSD configuration files.
2971
2972 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2973 try to make them clearer.
2974
2975 9. Callout options, other than the timeout value, were being ignored when
2976 verifying sender addresses in header lines. For example, when using
2977
2978 verify = header_sender/callout=no_cache
2979
2980 the cache was (incorrectly) being used.
2981
298210. Added a missing instance of ${EXE} to the exim_install script; this affects
2983 only the Cygwin environment.
2984
298511. When return_path_on_delivery was set as a log selector, if different remote
2986 addresses in the same message used different return paths and parallel
2987 remote delivery occurred, the wrong values would sometimes be logged.
2988 (Whenever a remote delivery process finished, the return path value from
2989 the most recently started remote delivery process was logged.)
2990
299112. RFC 3848 specifies standard names for the "with" phrase in Received: header
2992 lines when AUTH and/or TLS are in use. This is the "received protocol"
2993 field. Exim used to use "asmtp" for authenticated SMTP, without any
2994 indication (in the protocol name) for TLS use. Now it follows the RFC and
2995 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2996 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2997 names appear in log lines as well as in Received: header lines.
2998
299913. Installed MH's patches for Sieve to add the "copy" and "vacation"
3000 extensions, and comparison tests, and to fix some bugs.
3001
300214. Changes to the "personal" filter test:
3003
3004 (1) The test was buggy in that it was just doing the equivalent of
3005 "contains" tests on header lines. For example, if a user's address was
3006 anne@some.where, the "personal" test would incorrectly be true for
3007
3008 To: susanne@some.where
3009
3010 This test is now done by extracting each address from the header in turn,
3011 and checking the entire address. Other tests that are part of "personal"
3012 are now done using regular expressions (for example, to check local parts
3013 of addresses in From: header lines).
3014
3015 (2) The list of non-personal local parts in From: addresses has been
3016 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3017 taken from the Sieve specification recommendations.
3018
3019 (3) If the message contains any header line starting with "List-" it is
3020 treated as non-personal.
3021
3022 (4) The test for "circular" in the Subject: header line has been removed
3023 because it now seems ill-conceived.
3024
302515. Minor typos in src/EDITME comments corrected.
3026
302716. Installed latest exipick from John Jetmore.
3028
302917. If headers_add on a router specified a text string that was too long for
3030 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3031 of string_sprintf() is now avoided.
3032
303318. $message_body_size was not set (it was always zero) when running the DATA
3034 ACL and the local_scan() function.
3035
303619. For the "mail" command in an Exim filter, no default was being set for
3037 the once_repeat time, causing a random time value to be used if "once" was
3038 specified. (If the value happened to be <= 0, no repeat happened.) The
3039 default is now 0s, meaning "never repeat". The "vacation" command was OK
3040 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3041 (I found it when inspecting the code).
3042
304320. There is now an overall timeout for performing a callout verification. It
3044 defaults to 4 times the callout timeout, which applies to individual SMTP
3045 commands during the callout. The overall timeout applies when there is more
3046 than one host that can be tried. The timeout is checked before trying the
3047 next host. This prevents very long delays if there are a large number of
3048 hosts and all are timing out (e.g. when the network connections are timing
3049 out). The value of the overall timeout can be changed by specifying an
3050 additional sub-option for "callout", called "maxwait". For example:
3051
3052 verify = sender/callout=5s,maxwait=20s
3053
305421. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3055 to the end before writing, but this should make it even safer).
3056
305722. Exim was forgetting that it had advertised PIPELINING for the second and
3058 subsequent messages on an SMTP connection. It was also not resetting its
3059 memory on STARTTLS and an internal HELO.
3060
306123. When Exim logs an SMTP synchronization error within a session, it now
3062 records whether PIPELINING has been advertised or not.
3063
306424. Added 3 instances of "(long int)" casts to time_t variables that were being
3065 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3066 rather than long int.
3067
306825. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3069
307026. Added the never_mail option to autoreply.
3071
3072
3073Exim version 4.41
3074-----------------
3075
3076 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3077 crash if the getsockname() call failed; this can happen if a connection is
3078 closed very soon after it is established. The problem was simply in the
3079 order in which certain operations were done, causing Exim to try to write
3080 to the SMTP stream before it had set up the file descriptor. The bug has
3081 been fixed by making things happen in the correct order.
3082
3083
3084Exim version 4.40
3085-----------------
3086
3087 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3088 before the connection was closed, thus losing the rejection response.
3089
3090 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3091 some early Solaris releases, but causes trouble in current releases where
3092 socklen_t is defined.
3093
3094 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3095 always exist.
3096
3097 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3098 configured.
3099
3100 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3101 that releasing the top of it at the end releases what was used for sub-
3102 expansions (unless the block got too big). However, discard this block if
3103 the first thing is a variable or header, so that we can use its block when
3104 it is dynamic (useful for very large $message_headers, for example).
3105
3106 6. Lookups now cache *every* query, not just the most recent. A new, separate
3107 store pool is used for this. It can be recovered when all lookup caches are
3108 flushed. Lookups now release memory at the end of their result strings.
3109 This has involved some general refactoring of the lookup sources.
3110
3111 7. Some code has been added to the store_xxx() functions to reduce the amount
3112 of flapping under certain conditions.
3113
3114 8. log_incoming_interface used to affect only the <= reception log lines. Now
3115 it causes the local interface and port to be added to several more SMTP log
3116 lines, for example "SMTP connection from", and rejection lines.
3117
3118 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3119
312010. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3121
312211. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3123 could be overwritten at the end of the current message (or the start of a
3124 new message if it was set in a HELO ACL). The value is now preserved for
3125 the duration of the SMTP connection.
3126
312712. If a transport had a headers_rewrite setting, and a matching header line
3128 contained an unqualified address, that address was qualified, even if it
3129 did not match any rewriting rules. The underlying bug was that the values
3130 of the flags that permit the existence of unqualified sender and recipient
3131 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3132 non-local messages, and by -bnq for local messages) were not being
3133 preserved with the message after it was received.
3134
313513. When Exim was logging an SMTP synchronization error, it could sometimes log
3136 "next input=" as part of the text comprising the host identity instead of
3137 the correct text. The code was using the same buffer for two different
3138 strings. However, depending on which order the printing function evaluated
3139 its arguments, the bug did not always show up. Under Linux, for example, my
3140 test suite worked just fine.
3141
314214. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3143 doesn't work with some older versions of Perl. It has been changed to "my",
3144 which in any case is probably the better facility to use.
3145
314615. A really picky compiler found some instances of statements for creating
3147 error messages that either had too many or two few arguments for the format
3148 string.
3149
315016. The size of the buffer for calls to the DNS resolver has been increased
3151 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3152 for addresses that have a lot of PTR records. This alleviates a problem; it
3153 does not fully solve it.
3154
315517. A dnsdb lookup for PTR records that receives more data than will fit in the
3156 buffer now truncates the list and logs the incident, which is the same
3157 action as happens when Exim is looking up a host name and its aliases.
3158 Previously in this situation something unpredictable would happen;
3159 sometimes it was "internal error: store_reset failed".
3160
316118. If a server dropped the connection unexpectedly when an Exim client was
3162 using GnuTLS and trying to read a response, the client delivery process
3163 crashed while trying to generate an error log message.
3164
316519. If a "warn" verb in an ACL added multiple headers to a message in a single
3166 string, for example:
3167
3168 warn message = H1: something\nH2: something
3169
3170 the text was added as a single header line from Exim's point of view
3171 though it ended up OK in the delivered message. However, searching for the
3172 second and subsequent header lines using $h_h2: did not work. This has been
3173 fixed. Similarly, if a system filter added multiple headers in this way,
3174 the routers could not see them.
3175
317620. Expanded the error message when iplsearch is called with an invalid key to
3177 suggest using net-iplsearch in a host list.
3178
317921. When running tests using -bh, any delays imposed by "delay" modifiers in
3180 ACLs are no longer actually imposed (and a message to that effect is
3181 output).
3182
318322. If a "gecos" field in a passwd entry contained escaped characters, in
3184 particular, if it contained a \" sequence, Exim got it wrong when building
3185 a From: or a Sender: header from that name. A second bug also caused
3186 incorrect handling when an unquoted " was present following a character
3187 that needed quoting.
3188
318923. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3190 was not being matched caselessly.
3191
319224. Arranged for all hyphens in the exim.8 source to be escaped with
3193 backslashes.
3194
319525. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3196 properly. Recipient callout cache records were still being keyed to include
3197 the sender, even when use_sender was set false. This led to far more
3198 callouts that were necessary. The sender is no longer included in the key
3199 when use_sender is false.
3200
320126. Added "control = submission" modifier to ACLs.
3202
320327. Added the ${base62d: operator to decode base 62 numbers.
3204
320528. dnsdb lookups can now access SRV records.
3206
320729. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3208 the configuration file.
3209
321030. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3211 (-v) mode. This makes the output for a verbose queue run more intelligible.
3212
321331. Added a use_postmaster feature to recipient callouts.
3214
321532. Added the $body_zerocount variable, containing the number of binary zero
3216 bytes in the message body.
3217
321833. The time of last modification of the "new" subdirectory is now used as the
3219 "mailbox time last read" when there is a quota error for a maildir
3220 delivery.
3221
322234. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3223
322435. Added +ignore_unknown as a special item in host lists.
3225
322636. Code for decoding IPv6 addresses in host lists is now included, even if
3227 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3228 address was recognized as an IP address, but was then not correctly decoded
3229 into binary, causing unexpected and incorrect effects when compared with
3230 another IP address.
3231
3232
3233Exim version 4.34
3234-----------------
3235
3236 1. Very minor rewording of debugging text in manualroute to say "list of
3237 hosts" instead of "hostlist".
3238
3239 2. If verify=header_syntax was set, and a header line with an unqualified
3240 address (no domain) and a large number of spaces between the end of the
3241 name and the colon was received, the reception process suffered a buffer
3242 overflow, and (when I tested it) crashed. This was caused by some obsolete
3243 code that should have been removed. The fix is to remove it!
3244
3245 3. When running in the test harness, delay a bit after writing a bounce
3246 message to get a bit more predictability in the log output.
3247
3248 4. Added a call to search_tidyup() just before forking a reception process. In
3249 theory, someone could use a lookup in the expansion of smtp_accept_max_
3250 per_host which, without the tidyup, could leave open a database connection.
3251
3252 5. Added the variables $recipient_data and $sender_data which get set from a
3253 lookup success in an ACL "recipients" or "senders" condition, or a router
3254 "senders" option, similar to $domain_data and $local_part_data.
3255
3256 6. Moved the writing of debug_print from before to after the "senders" test
3257 for routers.
3258
3259 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3260 problems for message scanning, either using a data ACL, or using
3261 local_scan() because the Received: header was not generated till after they
3262 were called (in order to set the time as the time of reception completion).
3263 I have revised the way this works. The header is now generated after the
3264 body is received, but before the ACL or local_scan() are called. After they
3265 are run, the timestamp in the header is updated.
3266
3267
3268Exim version 4.33
3269-----------------
3270
3271 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3272 before starting a queue runner without re-exec. This happened only when
3273 deliver_drop_privilege was set or when the Exim user was set to root. The
3274 effect of the bug was that timeouts during subsequent deliveries caused
3275 crashes instead of being properly handled. The handler is now left at its
3276 default (and expected) setting.
3277
3278 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3279 message, again when deliver_drop_privilege is set or Exim is run as root.
3280 The bug described in (1) was not present in this case, but the tidying up
3281 of the other signals was missing. I have made the two cases consistent.
3282
3283 3. The ignore_target_hosts setting on a manualroute router was being ignored
3284 for hosts that were looked up using the /MX notation.
3285
3286 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3287 in domain lists.
3288
3289 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3290 operated on the sender address. After changing the $sender_address to <>
3291 for the sender address verify, Exim was re-instated it as the original
3292 (before rewriting) address, but remembering that it had rewritten it, so it
3293 wasn't rewriting it again. This bug also had the effect of breaking the
3294 sender address verification caching when the sender address was rewritten.
3295
3296 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3297 This has been changed so that if the ip literal address matches
3298 ignore_target_hosts, the router declines.
3299
3300 7. Added expansion conditions match_domain, match_address, and match_local_
3301 part (NOT match_host).
3302
3303 8. The placeholder for the Received: header didn't have a length field set.
3304
3305 9. Added code to Exim itself and to exim_lock to test for a specific race
3306 condition that could lead to file corruption when using MBX delivery. The
3307 issue is with the lockfile that is created in /tmp. If this file is removed
3308 after a process has opened it but before that process has acquired a lock,
3309 there is the potential for a second process to recreate the file and also
3310 acquire a lock. This could lead to two Exim processes writing to the file
3311 at the same time. The added code performs the same test as UW imapd; it
3312 checks after acquiring the lock that its file descriptor still refers to
3313 the same named file.
3314
331510. The buffer for building added header lines was of fixed size, 8192 bytes.
3316 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3317 when Exim is built.
3318
331911. Added the smtp_active_hostname option. If used, this will typically be made
3320 to depend on the incoming interface address. Because $interface_address is
3321 not set up until the daemon has forked a reception process, error responses
3322 that can happen earlier (such as "too many connections") no longer contain
3323 a host name.
3324
332512. If an expansion in a condition on a "warn" statement fails because a lookup
3326 defers, the "warn" statement is abandoned, and the next ACL statement is
3327 processed. Previously this caused the whole ACL to be aborted.
3328
332913. Added the iplsearch lookup type.
3330
333114. Added ident_timeout as a log selector.
3332
333315. Added tls_certificate_verified as a log selector.
3334
333516. Added a global option tls_require_ciphers (compare the smtp transport
3336 option of the same name). This controls incoming TLS connections.
3337
333817. I finally figured out how to make tls_require_ciphers do a similar thing
3339 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3340 before starting the TLS session.
3341
334218. Tabs are now shown as \t in -bP output.
3343
334419. If the log selector return_path_on_delivery was set, Exim crashed when
3345 bouncing a message because it had too many Received: header lines.
3346
334720. If two routers both had headers_remove settings, and the first one included
3348 a superfluous trailing colon, the final name in the first list and the
3349 first name in the second list were incorrectly joined into one item (with a
3350 colon in the middle).
3351
3352
3353Exim version 4.32
3354-----------------
3355
3356 1. Added -C and -D options to the exinext utility, mainly to make it easier
3357 to include in the automated testing, but these could be helpful when
3358 multiple configurations are in use.
3359
3360 2. The exinext utility was not formatting the output nicely when there was
3361 an alternate port involved in the retry record key, nor when there was a
3362 message id as well (for retries that were specific to a specific message
3363 and a specific host). It was also confused by IPv6 addresses, because of
3364 the additional colons they contain. I have fixed the IPv4 problem, and
3365 patched it up to do a reasonable job for IPv6.
3366
3367 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3368 delivery, the log line now contains "pipelined" if PIPELINING was used.
3369
3370 4. An SMTP transport process used to panic and die if the bind() call to set
3371 an explicit outgoing interface failed. This has been changed; it is now
3372 treated in the same way as a connect() failure.
3373
3374 5. A reference to $sender_host_name in the part of a conditional expansion
3375 that was being skipped was still causing a DNS lookup. This no longer
3376 occurs.
3377
3378 6. The def: expansion condition was not recognizing references to header lines
3379 that used bh_ and bheader_.
3380
3381 7. Added the _cache feature to named lists.
3382
3383 8. The code for checking quota_filecount in the appendfile transport was
3384 allowing one more file than it should have been.
3385
3386 9. For compatibility with Sendmail, the command line option
3387
3388 -prval:sval
3389
3390 is equivalent to
3391
3392 -oMr rval -oMs sval
3393
3394 and sets the incoming protocol and host name (for trusted callers). The
3395 host name and its colon can be omitted when only the protocol is to be set.
3396 Note the Exim already has two private options, -pd and -ps, that refer to
3397 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3398 "s", but I don't think that's a major issue.
3399
340010. A number of refactoring changes to the code, none of which should affect
3401 Exim's behaviour:
3402
3403 (a) The number of logging options was getting close to filling up the
3404 32-bit word that was used as a bit map. I have split them into two classes:
3405 those that are passed in the argument to log_write(), and those that are
3406 only ever tested independently outside of that function. These are now in
3407 separate 32-bit words, so there is plenty of room for expansion again.
3408 There is no change in the user interface or the logging behaviour.
3409
3410 (b) When building, for example, log lines, the code previously used a
3411 macro that called string_cat() twice, in order to add two strings. This is
3412 not really sufficiently general. Furthermore, there was one instance where
3413 it was actually wrong because one of the argument was used twice, and in
3414 one call a function was used. (As it happened, calling the function twice
3415 did not affect the overall behaviour.) The macro has been replaced by a
3416 function that can join an arbitrary number of extra strings onto a growing
3417 string.
3418
3419 (c) The code for expansion conditions now uses a table and a binary chop
3420 instead of a serial search (which was left over from when there were very
3421 few conditions). Also, it now recognizes conditions like "pam" even when
3422 the relevant support is not compiled in: a suitably worded error message is
3423 given if an attempt is made to use such a condition.
3424
342511. Added ${time_interval:xxxxx}.
3426
342712. A bug was causing one of the ddress fields not to be passed back correctly
3428 from remote delivery subprocesses. The field in question was not being
3429 subsequently used, so this caused to problems in practice.
3430
343113. Added new log selectors queue_time and deliver_time.
3432
343314. Might have fixed a bug in maildirsizefile handling that threw up
3434 "unexpected character" debug warnings, and recalculated the data
3435 unnecessarily. In any case, I expanded the warning message to give more
3436 information.
3437
343815. Added the message "Restricted characters in address" to the statements in
3439 the default ACL that block characters like @ and % in local parts.
3440
344116. Change 71 for release 4.31 proved to be much less benign that I imagined.
3442 Three changes have been made:
3443
3444 (a) There was a serious bug; a negative response to MAIL caused the whole
3445 recipient domain to be cached as invalid, thereby blocking all messages
3446 to all local parts at the same domain, from all senders. This bug has
3447 been fixed. The domain is no longer cached after a negative response to
3448 MAIL if the sender used is not empty.
3449
3450 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3451 been restored.
3452
3453 (c) A new callout option, "use_sender" has been added for people who want
3454 the modified behaviour.
3455
3456
3457Exim version 4.31
3458-----------------
3459
3460 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3461 Larry Rosenman.
3462
3463 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3464 indeed breaks things for older releases.
3465
3466 3. Added additional logging to the case where there is a problem reading data
3467 from a filter that is running in a subprocess using a pipe, in order to
3468 try to track down a specific problem.
3469
3470 4. Testing facility fudge: when running in the test harness and attempting
3471 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3472 getting "No route to host". Convert this to a timeout.
3473
3474 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3475 warning.
3476
3477 6. Some OS don't have socklen_t but use size_t instead. This affects the
3478 fifth argument of getsockopt() amongst other things. This is now
3479 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3480 can be set for individual OS. I have set it for SunOS5, OSF1, and
3481 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3482 some earlier ones do not.
3483
3484 7. Change 4.30/15 was not doing the test caselessly.
3485
3486 8. The standard form for an IPv6 address literal was being rejected by address
3487 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3488 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3489 this, as well as the form without the "IPv6" on the front (but only when
3490 address literals are enabled, of course).
3491
3492 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3493
349410. Exim crashed if a message with an empty sender address specified by -f
3495 encountered a router with an errors_to setting. This could be provoked only
3496 by a command such as
3497
3498 exim -f "" ...
3499
3500 where an empty string was supplied; "<>" did not hit this bug.
3501
350211. Installed PCRE release 4.5.
3503
350412. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3505 remained set. It is now erased.
3506
350713. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3508 times from message ids (which are base 36 rather than the normal 62).
3509
351014. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3511 were being counted as actual protocol errors, and logged if the log
3512 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3513 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3514 and DATA following a set of rejected RCPTs do not count as protocol errors.
3515 In other words, Exim assumes they were pipelined, though this may not
3516 actually be the case. Of course, in all cases the client gets an
3517 appropriate error code.
3518
351915. If a lookup fails in an ACL condition, a message about the failure may
3520 be available; it is used if testing the ACL cannot continue, because most
3521 such messages specify what the cause of the deferral is. However, some
3522 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3523 that caused an old message to be retained and used if a later statement
3524 caused a defer, replacing the real cause of the deferral.
3525
352616. If an IP address had so many PTR records that the DNS lookup buffer
3527 was not large enough to hold them, Exim could crash while trying to process
3528 the truncated data. It now detects and logs this case.
3529
353017. Further to 4.21/58, another change has been made: if (and only if) the
3531 first line of a message (the first header line) ends with CRLF, a bare LF
3532 in a subsequent header line has a space inserted after it, so as not to
3533 terminate the header.
3534
353518. Refactoring: tidied an ugly bit of code in appendfile that copied data
3536 unnecessarily, used atoi() instead of strtol(), and didn't check the
3537 termination when getting file sizes from file names by regex.
3538
353919. Completely re-implemented the support for maildirsize files, in the light
3540 of a number of problems with the previous contributed implementation
3541 (4.30/29). In particular:
3542
3543 . If the quota is zero, the maildirsize file is maintained, but no quota is
3544 imposed.
3545
3546 . If the maildir directory does not exist, it is created before any attempt
3547 to write a maildirsize file.
3548
3549 . The quota value in the file is just a cache; if the quota is changed in
3550 the transport, the new value overrides.
3551
3552 . A regular expression is available for excluding directories from the
3553 count.
3554
355520. The autoreply transport checks the characters in options that define the
3556 message's headers; it allows continued headers, but it was checking with
3557 isspace() after an embedded newline instead of explicitly looking for a
3558 space or a tab.
3559
356021. If all the "regular" hosts to which an address was routed had passed their
3561 expiry times, and had not reached their retry times, the address was
3562 bounced, even if fallback hosts were defined. Now Exim should go on to try
3563 the fallback hosts.
3564