Update description of how the documentation is created.
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bc64a74d 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.530 2007/08/29 15:06:47 ph10 Exp $
495ae4b0
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
eb4c0de6
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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
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28TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
29 version.
30
0806a9c5
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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
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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
8932dffe
PH
86PH/18 If a system quota error occurred while trying to create the file for
87 a maildir delivery, the message "Mailbox is full" was not appended to the
88 bounce if the delivery eventually timed out. Change 4.67/27 below applied
89 only to a quota excession during the actual writing of the file.
d6a60c0f 90
ddea74fa 91PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
92 characters?) which causes problems in log lines. The DN values are now
93 passed through string_printing() before being added to log lines.
94
ddea74fa 95PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
96 and InterBase are left for another time.)
97
ddea74fa
PH
98PH/21 Added message_body_newlines option.
99
ce9f225c
PH
100PH/22 Guard against possible overflow in moan_check_errorcopy().
101
19897d52
PH
102PH/23 POSIX allows open() to be a macro; guard against that.
103
bc64a74d
PH
104PH/24 If the recipient of an error message contained an @ in the local part
105 (suitably quoted, of course), incorrect values were put in $domain and
106 $local_part during the evaluation of errors_copy.
107
eb4c0de6 108
b4ed4da0
PH
109Exim version 4.67
110-----------------
111
22ad45c9
MH
112MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
113 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
114 Jan Srzednicki.
115
b4ed4da0
PH
116PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
117 issue a MAIL command.
118
431b7361
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119PH/02 In an ACL statement such as
120
121 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
122
123 if a client was not listed at all, or was listed with a value other than
124 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
125 the condition was not true (as it should be), so access was not denied.
126 The bug was that the ! inversion was incorrectly passed on to the second
127 item. This has been fixed.
128
129PH/03 Added additional dnslists conditions == and =& which are different from
130 = and & when the dns lookup returns more than one IP address.
131
83da1223
PH
132PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
133 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
134
54fc8428
PH
135PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
136 FSYNC, which compiles an option called disable_fsync that allows for
137 bypassing fsync(). The documentation is heavily laced with warnings.
138
34c5e8dd
SC
139SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
140
bbe15da8
PH
141PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
142 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
143 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
144 including adding "make clean"; (3) Added -fPIC when compiling the test
145 dynamically loaded module, to get rid of a warning.
146
0e8a9471
MH
147MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
148 message fails, move_frozen_messages = true and ignore_bounce_errors_after
149 = 0s. The bug is otherwise harmless.
150
f0872424
PH
151PH/07 There was a bug in the dovecot authenticator such that the value of
152 $auth1 could be overwritten, and so not correctly preserved, after a
153 successful authentication. This usually meant that the value preserved by
154 the server_setid option was incorrect.
155
b01dd148
PH
156PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
157
6bf342e1
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158PH/09 Installed PCRE release 7.0.
159
273f34d0
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160PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
161 run for batched SMTP input. It is now run at the start of every message
162 in the batch. While fixing this I discovered that the process information
163 (output by running exiwhat) was not always getting set for -bs and -bS
164 input. This is fixed, and it now also says "batched" for BSMTP.
165
cf8b11a5
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166PH/11 Added control=no_pipelining.
167
41c7c167
PH
168PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
169 patch, slightly modified), and move the expansion of helo_data till after
170 the connection is made in the smtp transport (so it can use these
171 values).
172
9c57cbc0
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173PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
174
f3f065bb
PH
175PH/14 Added log_selector = +pid.
176
047bdd8c
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177PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
178
0ce9abe6
PH
179PH/16 Add ${if forany and ${if forall.
180
0e22dfd1
PH
181PH/17 Added dsn_from option to vary the From: line in DSNs.
182
4c590bd1
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183PH/18 Flush SMTP output before performing a callout, unless control =
184 no_callout_flush is set.
185
09945f1e
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186PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
187 was true (the default) a successful delivery failed to delete the retry
188 item, thus causing premature timeout of the address. The bug is now
189 fixed.
190
c51b8e75
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191PH/20 Added hosts_avoid_pipelining to the smtp transport.
192
e28326d8
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193PH/21 Long custom messages for fakedefer and fakereject are now split up
194 into multiline reponses in the same way that messages for "deny" and
195 other ACL rejections are.
196
75b1493f
PH
197PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
198 with slight modification.
199
7c5214ec
PH
200PH/23 Applied sieve patches from the maintainer "tracking the latest notify
201 draft, changing the syntax and factoring some duplicate code".
202
4311097e
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203PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
204 for deliveries of the second and subsequent messages over the same SMTP
205 connection.
206
29f89cad
PH
207PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
208 ${reduce, with only minor "tidies".
209
5e687460
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210SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
211
c3611384
PH
212PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
213 expansion side effects.
214
5a11a7b4
PH
215PH/27 When a message times out after an over-quota error from an Exim-imposed
216 quota, the bounce message says "mailbox is full". This message was not
217 being given when it was a system quota that was exceeded. It now should
218 be the same.
219
0e20aff9
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220MH/03 Made $recipients available in local_scan(). local_scan() already has
221 better access to the recipient list through recipients_list[], but
222 $recipients can be useful in postmaster-provided expansion strings.
223
ca86f471
PH
224PH/28 The $smtp_command and $smtp_command_argument variables were not correct
225 in the case of a MAIL command with additional options following the
226 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
227 were accidentally chopped off.
228
a14e5636
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229PH/29 SMTP synchronization checks are implemented when a command is read -
230 there is a check that no more input is waiting when there shouldn't be
231 any. However, for some commands, a delay in an ACL can mean that it is
232 some time before the response is written. In this time, more input might
233 arrive, invalidly. So now there are extra checks after an ACL has run for
234 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
235 pipelining has not been advertised.
236
ec95d1a6
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237PH/30 MH's patch to allow iscntrl() characters to be list separators.
238
42855d71
PH
239PH/31 Unlike :fail:, a custom message specified with :defer: was not being
240 returned in the SMTP response when smtp_return_error_details was false.
241 This has been fixed.
242
57c2c631
PH
243PH/32 Change the Dovecot authenticator to use read() and write() on the socket
244 instead of the C I/O that was originally supplied, because problems were
245 reported on Solaris.
246
58c01c94
PH
247PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
248 Exim which did not show up earlier: it was assuming that a call to
249 SSL_CTX_set_info_callback() might give an error value. In fact, there is
250 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
251 was a macro that became an assignment, so it seemed to work. This has
252 changed to a proper function call with a void return, hence the compile
253 error. Exim's code has been fixed.
254
dee5a20a
PH
255PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
256 cpus.
257
d2ee6114
PH
258PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
259
b2d5182b
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260PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
261
79749a79
PH
262PH/37 If a message is not accepted after it has had an id assigned (e.g.
263 because it turns out to be too big or there is a timeout) there is no
3ce62588
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264 "Completed" line in the log. When some messages of this type were
265 selected by exigrep, they were listed as "not completed". Others were
266 picked up by some special patterns. I have improved the selection
267 criteria to be more general.
79749a79 268
c456d9bb
PH
269PH/38 The host_find_failed option in the manualroute router can now be set
270 to "ignore", to completely ignore a host whose IP address cannot be
271 found. If all hosts are ignored, the behaviour is controlled by the new
272 host_all_ignored option.
273
cd9868ec
PH
274PH/39 In a list of hosts for manualroute, if one item (either because of multi-
275 homing or because of multiple MX records with /mx) generated more than
276 one IP address, and the following item turned out to be the local host,
277 all the secondary addresses of the first item were incorrectly removed
278 from the list, along with the local host and any following hosts (which
279 is what is supposed to happen).
280
ebeaf996
PH
281PH/40 When Exim receives a message, it writes the login name, uid, and gid of
282 whoever called Exim into the -H file. In the case of the daemon it was
283 behaving confusingly. When first started, it used values for whoever
284 started the daemon, but after a SIGHUP it used the Exim user (because it
285 calls itself on a restart). I have changed the code so that it now always
286 uses the Exim user.
287
2679d413
PH
288PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
289 message are rejected with the same error (e.g. no authentication or bad
290 sender address), and a DATA command is nevertheless sent (as can happen
291 with PIPELINING or a stupid MUA), the error message that was given to the
292 RCPT commands is included in the rejection of the DATA command. This is
293 intended to be helpful for MUAs that show only the final error to their
294 users.
295
84024b72
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296PH/42 Another patch from the Sieve maintainer.
297
8005d38e
SC
298SC/02 Eximstats - Differentiate between permanent and temporary rejects.
299 Eximstats - Fixed some broken HTML links and added missing column headers
300 (Jez Hancock).
301 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
302 columns for Rejects, Temp Rejects, Ham, and Spam rows.
303
3298c6c6
SC
304SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
305
a43a27c5
PH
306PH/43 Yet another patch from the Sieve maintainer.
307
58eb016e 308PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
309 the response to the final '.' that terminates a message, but only in the
310 case where the client has not sent further data following the '.'
311 (unfortunately, this is allowed). However, in many cases there won't be
312 any further data because there won't be any more messages to send. A call
313 to select() can be used: if it shows that the input is "ready", there is
314 either input waiting, or the socket has been closed. An attempt to read
315 the next input character can distinguish the two cases. Previously, Exim
58eb016e 316 would have sent an OK response which the client would never have see.
563b63fa
PH
317 This could lead to message repetition. This fix should cure that, at
318 least in a lot of common cases.
58eb016e 319
b43a74ea
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320PH/45 Do not advertise STARTTLS in response to HELP unless it would be
321 advertised in response to EHLO.
322
b4ed4da0 323
5dd1517f
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324Exim version 4.66
325-----------------
326
327PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
328 fixed by 4.65/MH/01 (is this a record?) are fixed:
329
330 (i) An empty string was always treated as zero by the numeric comparison
331 operators. This behaviour has been restored.
332
333 (ii) It is documented that the numeric comparison operators always treat
334 their arguments as decimal numbers. This was broken in that numbers
335 starting with 0 were being interpreted as octal.
336
337 While fixing these problems I realized that there was another issue that
338 hadn't been noticed. Values of message_size_limit (both the global option
339 and the transport option) were treated as octal if they started with 0.
340 The documentation was vague. These values are now always treated as
341 decimal, and I will make that clear in the documentation.
342
343
93cfa765
TK
344Exim version 4.65
345-----------------
346
347TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
348 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
349 versions. (#438)
350
d6066548
MH
351MH/01 Don't check that the operands of numeric comparison operators are
352 integers when their expansion is in "skipping" mode (fixes bug
353 introduced by 4.64-PH/07).
354
4362ff0d
PH
355PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
356 child addresses, Exim now panics and dies. Previously, because the count
357 is held in a short int, deliveries were likely to be lost. As such a
358 large number of recipients for a single message is ridiculous
359 (performance will be very, very poor), I have chosen to impose a limit
360 rather than extend the field.
361
93cfa765 362
944e9e9c
TF
363Exim version 4.64
364-----------------
aa41d2de 365
21d74bd9
TK
366TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
367 leftover -K file (the existence of which was triggered by #402).
368 While we were at it, introduced process PID as part of the -K
369 filename. This should rule out race conditions when creating
370 these files.
371
372TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
373 processing considerably. Previous code took too long for large mails,
374 triggering a timeout which in turn triggers #401.
375
376TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
377 in the DK code in transports.c. sendfile() is not really portable,
378 hence the _LINUX specificness.
944e9e9c
TF
379
380TF/01 In the add_headers option to the mail command in an Exim filter,
381 there was a bug that Exim would claim a syntax error in any
382 header after the first one which had an odd number of characters
383 in the field name.
384
2b1c6e3a
PH
385PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
386 callout verification, Exim cached a "reject" for the entire domain. This
387 is correct for most verifications, but it is not correct for a recipient
388 verification with use_sender or use_postmaster set, because in that case
389 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
390 case of MAIL FROM:<> rejection from other early rejections (e.g.
391 rejection of HELO). When verifying a recipient using a non-null MAIL
392 address, the cache is ignored if it shows MAIL FROM:<> rejection.
393 Whatever the result of the callout, the value of the domain cache is
394 left unchanged (for any other kind of callout, getting as far as trying
395 RCPT means that the domain itself is ok).
396
1f872c80
PH
397PH/02 Tidied a number of unused variable and signed/unsigned warnings that
398 gcc 4.1.1 threw up.
399
400PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
401 manifest itself as EPIPE rather than ECONNECT. When tidying away a
402 session, the daemon ignores ECONNECT errors and logs others; it now
403 ignores EPIPE as well.
404
d203e649
PH
405PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
406 (quoted-printable decoding).
407
cc2ed8f7 408PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 409 later the small subsequent patch to fix an introduced bug.
f951fd57 410
ddfcd446
PH
411PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
412
d45b1de8
PH
413PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
414
415PH/08 An error is now given if message_size_limit is specified negative.
416
38a0a95f 417PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 418 to be given (somewhat) arbitrary names.
38a0a95f 419
a2405d83
JJ
420JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
421 in 4.64-PH/09.
422
423JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
424 miscellaneous code fixes
425
6ea85e9a
PH
426PH/10 Added the log_reject_target ACL modifier to specify where to log
427 rejections.
428
26da7e20
PH
429PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
430 hostname. This is wrong, because it relates to the incoming message (and
431 probably the interface on which it is arriving) and not to the outgoing
432 callout (which could be using a different interface). This has been
433 changed to use the value of the helo_data option from the smtp transport
434 instead - this is what is used when a message is actually being sent. If
435 there is no remote transport (possible with a router that sets up host
436 addresses), $smtp_active_hostname is used.
6ea85e9a 437
14aa5a05 438PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 439 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
440 (a) The code assumed that strncpy() returns a negative number on buffer
441 overflow, which isn't the case. Replaced with Exim's string_format()
442 function.
443 (b) There were several signed/unsigned issues. I just did the minimum
444 hacking in of casts. There is scope for a larger refactoring.
445 (c) The code used strcasecmp() which is not a standard C function.
446 Replaced with Exim's strcmpic() function.
447 (d) The code set only $1; it now sets $auth1 as well.
448 (e) A simple test gave the error "authentication client didn't specify
449 service in request". It would seem that Dovecot has changed its
450 interface. Fortunately there's a specification; I followed it and
451 changed what the client sends and it appears to be working now.
452
ff75a1f7
PH
453PH/13 Added $message_headers_raw to provide the headers without RFC 2047
454 decoding.
455
e6f6568e
PH
456PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
457 address A is aliased to B and C, where B exists and C does not. Without
458 -v the output is "A verified" because verification stops after a
459 successful redirection if more than one address is generated. However,
460 with -v the child addresses are also verified. Exim was outputting "A
461 failed to verify" and then showing the successful verification for C,
462 with its parentage. It now outputs "B failed to verify", showing B's
463 parentage before showing the successful verification of C.
464
d6f6e0dc
PH
465PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
466 look up a TXT record in a specific list after matching in a combined
467 list.
468
322050c2
PH
469PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
470 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
471 they consult the DNS. I had assumed they would set it the way they
472 wanted; and indeed my experiments on Linux seem to show that in some
473 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
474 To be on the safe side, however, I have now made the interface to
475 host_find_byname() similar to host_find_bydns(), with an argument
476 containing the DNS resolver options. The host_find_byname() function now
477 sets these options at its start, just as host_find_bydns() does. The smtp
478 transport options dns_qualify_single and dns_search_parents are passed to
479 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
480 of host_find_byname() use the default settings of RES_DEFNAMES
481 (qualify_single) but not RES_DNSRCH (search_parents).
482
08955dd3
PH
483PH/17 Applied (a modified version of) Nico Erfurth's patch to make
484 spool_read_header() do less string testing, by means of a preliminary
485 switch on the second character of optional "-foo" lines. (This is
486 overdue, caused by the large number of possibilities that now exist.
487 Originally there were few.) While I was there, I also converted the
488 str(n)cmp tests so they don't re-test the leading "-" and the first
489 character, in the hope this might squeeze out yet more improvement.
490
1eccaa59
PH
491PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
492 flag allowing group syntax was set by the header_syntax check but not
493 turned off, possible causing trouble later; (2) The flag was not being
494 set at all for the header_verify test, causing "group"-style headers to
495 be rejected. I have now set it in this case, and also caused header_
496 verify to ignore an empty address taken from a group. While doing this, I
497 came across some other cases where the code for allowing group syntax
498 while scanning a header line wasn't quite right (mostly, not resetting
499 the flag correctly in the right place). These bugs could have caused
500 trouble for malformed header lines. I hope it is now all correct.
501
602e59e5
PH
502PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
503 with the "reply" argument non-NULL. The code, however (which originally
504 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
505 but it didn't always do it. This confused somebody who was copying the
506 code for some other use. I have removed all the tests.
507
411ef850
PH
508PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
509 feature that was used to support insecure browsers during the U.S. crypto
510 embargo. It requires special client support, and Exim is probably the
511 only MTA that supported it -- and would never use it because real RSA is
512 always available. This code has been removed, because it had the bad
513 effect of slowing Exim down by computing (never used) parameters for the
514 RSA_EXPORT functionality.
515
7befa435
PH
516PH/21 On the advice of Timo Sirainen, added a check to the dovecot
517 authenticator to fail if there's a tab character in the incoming data
518 (there should never be unless someone is messing about, as it's supposed
519 to be base64-encoded). Also added, on Timo's advice, the "secured" option
520 if the connection is using TLS or if the remote IP is the same as the
521 local IP, and the "valid-client-cert option" if a client certificate has
522 been verified.
523
48da4259 524PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
525 authenticators. This can be used for authorization after authentication
526 succeeds. (In the case of plaintext, it servers for both authentication
527 and authorization.)
528
48da4259
PH
529PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
530 if any retry times were supplied.
531
d1d5595c
PH
532PH/24 Exim crashed if verify=helo was activated during an incoming -bs
533 connection, where there is no client IP address to check. In this
534 situation, the verify now always succeeds.
535
0ef732d9
PH
536PH/25 Applied John Jetmore's -Mset patch.
537
328895cc
PH
538PH/26 Added -bem to be like -Mset, but loading a message from a file.
539
fd700877
PH
540PH/27 In a string expansion for a processed (not raw) header when multiple
541 headers of the same name were present, leading whitespace was being
542 removed from all of them, but trailing whitespace was being removed only
543 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
544 before concatenation. Completely empty headers in a concatenation (as
545 before) are ignored.
fd700877 546
8dce1a6f
PH
547PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
548 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
549
17af4a17
PH
550PH/29 [Removed. This was a change that I later backed out, and forgot to
551 correct the ChangeLog entry (that I had efficiently created) before
552 committing the later change.]
f6c332bd
PH
553
554PH/30 Exim was sometimes attempting to deliver messages that had suffered
555 address errors (4xx response to RCPT) over the same connection as other
556 messages routed to the same hosts. Such deliveries are always "forced",
557 so retry times are not inspected. This resulted in far too many retries
558 for the affected addresses. The effect occurred only when there were more
559 hosts than the hosts_max_try setting in the smtp transport when it had
560 the 4xx errors. Those hosts that it had tried were not added to the list
561 of hosts for which the message was waiting, so if all were tried, there
562 was no problem. Two fixes have been applied:
563
564 (i) If there are any address or message errors in an SMTP delivery, none
565 of the hosts (tried or untried) are now added to the list of hosts
566 for which the message is waiting, so the message should not be a
567 candidate for sending over the same connection that was used for a
568 successful delivery of some other message. This seems entirely
569 reasonable: after all the message is NOT "waiting for some host".
570 This is so "obvious" that I'm not sure why it wasn't done
571 previously. Hope I haven't missed anything, but it can't do any
572 harm, as the worst effect is to miss an optimization.
573
574 (ii) If, despite (i), such a delivery is accidentally attempted, the
575 routing retry time is respected, so at least it doesn't keep
576 hammering the server.
577
c1114884
PH
578PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
579 in ${readsocket because some servers need this prod.
580
7a0743eb
PH
581PH/32 Added some extra debug output when updating a wait-xxx database.
582
0d85fa3f
PH
583PH/33 The hint "could be header name not terminated by colon", which has been
584 given for certain expansion errors for a long time, was not being given
585 for the ${if def:h_colon_omitted{... case.
586
1bf43b78
PH
587PH/34 The spec says: "With one important exception, whenever a domain list is
588 being scanned, $domain contains the subject domain." There was at least
589 one case where this was not true.
590
520de300
PH
591PH/35 The error "getsockname() failed: connection reset by peer" was being
592 written to the panic log as well as the main log, but it isn't really
593 panic-worthy as it just means the connection died rather early on. I have
594 removed the panic log writing for the ECONNRESET error when getsockname()
595 fails.
596
48c7f9e2
PH
597PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
598 runs only) independently of the message's sender address. This meant
599 that, if the 4xx error was in fact related to the sender, a different
600 message to the same recipient with a different sender could confuse
601 things. In particualar, this can happen when sending to a greylisting
602 server, but other circumstances could also provoke similar problems.
603 I have changed the default so that the retry time for these errors is now
604 based a combination of the sender and recipient addresses. This change
605 can be overridden by setting address_retry_include_sender=false in the
606 smtp transport.
607
99ea1c86
PH
608PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
609 remote server are returned as part of bounce messages. This was not
610 happening for LMTP over a pipe (the lmtp transport), but now it is the
611 same for both kinds of LMTP.
612
a2042e78
PH
613PH/38 Despite being documented as not happening, Exim was rewriting addresses
614 in header lines that were in fact CNAMEs. This is no longer the case.
615
4fbcfc2e
PH
616PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
617 and queue runs started by the daemon processed all messages. This has
618 been fixed so that -R and -S can now usefully be given with -q<time>.
619
aa41d2de
PH
620PH/40 Import PCRE release 6.7 (fixes some bugs).
621
af561417
PH
622PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
623
3cc66b45
PH
624PH/42 Give an error if -q is specified more than once.
625
194cc0e4
PH
626PH/43 Renamed the variables $interface_address and $interface_port as
627 $received_ip_address and $received_port, to make it clear that these
628 values apply to message reception, and not to the outgoing interface when
629 a message is delivered. (The old names remain recognized, of course.)
630
a401ddaa
PH
631PH/44 There was no timeout on the connect() call when using a Unix domain
632 socket in the ${readsocket expansion. There now is.
633
4e88a19f
PH
634PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
635 be meaningful with "accept".
636
d7d7b289
SC
637SC/01 Eximstats V1.43
638 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
639
640SC/02 Eximstats V1.44
641 Use a glob alias rather than an array ref in the generated
642 parser. This improves both readability and performance.
643
644SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
645 Collect SpamAssassin and rejection statistics.
646 Don't display local sender or destination tables unless
647 there is data to show.
648 Added average volumes into the top table text output.
649
650SC/04 Eximstats V1.46
651 Collect data on the number of addresses (recipients)
652 as well as the number of messages.
653
654SC/05 Eximstats V1.47
655 Added 'Message too big' to the list of mail rejection
656 reasons (thanks to Marco Gaiarin).
657
658SC/06 Eximstats V1.48
659 Mainlog lines which have GMT offsets and are too short to
660 have a flag are now skipped.
661
662SC/07 Eximstats V1.49 (Alain Williams)
663 Added the -emptyok flag.
664
665SC/08 Eximstats V1.50
666 Fixes for obtaining the IP address from reject messages.
667
0ea2a468
JJ
668JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
669 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
670 whitesspace changes from 4.64-PH/27
671
672JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
673 match 4.64-PH/13
674
675JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
676 are found, allow negative numbers in numeric criteria)
677
678JJ/06 exipick.20061117.2, added new $message_body_missing variable
679
680JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
681 to match changes made in 4.64-PH/43
682
8a10f5a4
PH
683PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
684
30e18802
PH
685PH/47 Put in an explicit test for a DNS lookup of an address record where the
686 "domain" is actually an IP address, and force a failure. This locks out
687 those revolvers/nameservers that support "A-for-A" lookups, in
688 contravention of the specifications.
689
55728a4f
PH
690PH/48 When a host name was looked up from an IP address, and the subsequent
691 forward lookup of the name timed out, the host name was left in
692 $sender_host_name, contrary to the specification.
d7d7b289 693
d7837193
PH
694PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
695 restricted to single-key lookups, Exim was not diagnosing an error if
696 * or *@ was used with a query-style lookup.
697
87054a31
PH
698PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
699
ea2c01d2
MH
700MH/01 local_scan ABI version incremented to 1.1. It should have been updated
701 long ago, but noone interested enough thought of it. Let's just say that
702 the "1.1" means that there are some new functions that weren't there at
703 some point in the past.
704
e4fa6968
PH
705PH/51 Error processing for expansion failure of helo_data from an smtp
706 transport during callout processing was broken.
707
56f5d9bd
PH
708PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
709 tested/used via the -bh/-bhc/-bs options.
710
922e1c28
PH
711PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
712 bug, fixed in subsequent PCRE releases).
713
21eb6e72
PH
714PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
715 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
716
a0540757
PH
717PH/55 Check for a ridiculously long file name in exim_dbmbuild.
718
944e9e9c 719
478be7b0
SC
720Exim version 4.63
721-----------------
722
723SC/01 Use a glob alias rather than an array ref in eximstats generated
724 parser. This improves both readability and performance.
725
726SC/02 Collect SpamAssassin and rejection statistics in eximstats.
727 Don't display local sender or destination tables in eximstats unless
728 there is data to show.
729 Added average volumes into the eximstats top table text output.
730
731SC/03 Collect data on the number of addresses (recipients) as well
732 as the number of messages in eximstats.
733
2b965a65
TF
734TF/01 Correct an error in the documentation for the redirect router. Exim
735 does (usually) call initgroups() when daemonizing.
478be7b0 736
45b91596
PH
737TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
738 with consistent privilege compared to when running as a daemon.
478be7b0 739
c59f5781
TF
740TF/03 Note in the spec that $authenticated_id is not set for local
741 submissions from trusted users.
742
90fc3069
TF
743TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
744 Thanks to Dean Brooks <dean@iglou.com> for the patch.
745
6083aca0
TF
746TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
747 by adding some example configuration directives to the default
748 configuration file. A little bit of work is required to uncomment the
749 directives and define how usernames and passwords are checked, but
750 there is now a framework to start from.
751
765b530f
PH
752PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
753 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
754 without this. I don't know how relevant this is to other LDAP libraries.
755
4e167a8c
PH
756PH/02 Add the verb name to the "unknown ACL verb" error.
757
4608d683
PH
758PH/03 Magnus Holmgren's patch for filter_prepend_home.
759
b8dc3e4a
PH
760PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
761
5418e93b
PH
762PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
763 directory not expanded when it should be if an expanded home directory
764 was set for the address (which is overridden by the transport).
765
b4a9bda2
PH
766PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
767 libradius.
768
45b91596
PH
769PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
770 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
771 because it is too late at that time, and has no effect.
772
5547e2c5
PH
773PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
774 security issue with \' (bugzilla #107). I could not use the
775 PQescapeStringConn() function, because it needs a PGconn value as one of
776 its arguments.
777
dbcef0ea
PH
778PH/08 When testing addresses using -bt, indicate those final addresses that
779 are duplicates that would not cause an additional delivery. At least one
780 person was confused, thinking that -bt output corresponded to deliveries.
781 (Suppressing duplicates isn't a good idea as you lose the information
782 about possibly different redirections that led to the duplicates.)
783
25257489
PH
784PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
785 systems where poll() doesn't work, in particular OS X.
786
c816d124
PH
787PH/10 Added more information to debugging output for retry time not reached.
788
a9ccd69a
PH
789PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
790 operations in malware.c.
791
75fa1910
PH
792PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
793 signatures.
794
a7d7aa58
PH
795PH/13 If write_rejectlog was set false when logging was sent to syslog with
796 syslog_duplication set false, log lines that would normally be written
797 both the the main log and to the reject log were not written to syslog at
798 all.
799
42119b09
PH
800PH/14 In the default configuration, change the use of "message" in ACL warn
801 statements to "add_header".
802
41609df5
PH
803PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
804 not followed by a command (e.g. "seen endif").
805
a5bd321b
PH
806PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
807 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
808 latter.
809
e85a7ad5 810PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
811 so that it is now:
812
e85a7ad5
PH
813 ${if or { \
814 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
815 { match{$h_precedence:}{(?i)bulk|list|junk} } \
816 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
817 }{no}{yes}}
818
e85a7ad5
PH
819 The Auto-Submitted: and various List- headers are standardised, whereas I
820 don't think Precedence: ever was.
5dff5817 821
d8fe1c03
PH
822PH/18 Refactored debugging code in route_finduser() to show more information,
823 in particular, the error code if getpwnam() issues one.
824
16282d2b
PH
825PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
826 This is apparently needed in addition to the PH/07 change above to avoid
827 any possible encoding problems.
828
35d40a98
PH
829PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
830 but not after initializing Perl.
831
034d99ab
PH
832PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
833 output them only if debugging. By default they are written stderr,
834 apparently, which is not desirable.
835
6ec97b1b
PH
836PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
837 queries.
838
e22ca4ac
JJ
839JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
840 --not options
841
842JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
843
33d73e3b
PH
844PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
845 authenticated or an ident call has been made. Suppress the default
846 values for $authenticated_id and $authenticated_sender (but permit -oMai
847 and -oMas) when testing with -bh.
848
9ecb03f3
PH
849PH/24 Re-jigged the order of the tests in the default configuration so that the
850 tests for valid domains and recipients precede the DNS black list and CSA
851 tests, on the grounds that those ones are more expensive.
852
084efe8d
PH
853PH/25 Exim was not testing for a space following SMTP commands such as EHLO
854 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
855 This bug exists in every version of Exim that I still have, right back to
856 0.12.
857
366fc9f0
PH
858PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
859 However, an attempt to turn on case-sensitivity in a regex key by
860 including (?-i) didn't work because the subject string was already
861 lowercased, and the effects were non-intuitive. It turns out that a
862 one-line patch can be used to allow (?-i) to work as expected.
863
c59f5781 864
c887c79e
TF
865Exim version 4.62
866-----------------
867
868TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
869 other effects) broke the use of negated acl sub-conditions.
870
1cce3af8
PH
871PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
872 patch).
873
afb3eaaf
PH
874PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
875 "Deny" causes Exim to reject the incoming connection with a 554 error.
876 Unfortunately, if there is a major crisis, such as a disk failure,
877 tcp-wrappers gives "deny", whereas what one would like would be some
878 kind of temporary error. A kludge has been added to help with this.
879 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
880 554 error is used if errno is still zero or contains ENOENT (which occurs
881 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
882 451 error is used.
883
e173618b
PH
884PH/03 Add -lutil to the default FreeBSD LIBS setting.
885
dd16e114
PH
886PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
887 errors. Otherwise a message that provokes a temporary error (when other
888 messages do not) can cause a whole host to time out.
889
f7fd3850
PH
890PH/05 Batch deliveries by appendfile and pipe transports did not work when the
891 addresses were routed directly to files or pipes from a redirect router.
892 File deliveries just didn't batch; pipe deliveries might have suffered
893 odd errors.
894
d87df92c
PH
895PH/06 A failure to get a lock for a hints database would erroneously always say
896 "Failed to get write lock", even when it was really a read lock.
897
7e9f683d
PH
898PH/07 The appendfile transport was creating MBX lock files with a fixed mode
899 of 0600. This has been changed to use the value of the lockfile_mode
900 option (which defaults to 0600).
901
bfad5236
PH
902PH/08 Applied small patch from the Sieve maintainer.
903
01c490df
PH
904PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
905 folder from quota calculations, a direct delivery into this folder messed
906 up the contents of the maildirsize file. This was because the regex was
907 used only to exclude .Trash (or whatever) when the size of the mailbox
908 was calculated. There was no check that a delivery was happening into an
909 excluded directory. This bug has been fixed by ignoring all quota
910 processing for deliveries into excluded directories.
911
d6629cdc
PH
912PH/10 Added the maildirfolder_create_regex option to appendfile.
913
1cce3af8 914
214e2000
PH
915Exim version 4.61
916-----------------
917
918PH/01 The code for finding all the local interface addresses on a FreeBSD
919 system running IPv6 was broken. This may well have applied to all BSD
920 systems, as well as to others that have similar system calls. The broken
921 code found IPv4 interfaces correctly, but gave incorrect values for the
922 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
923 that it would not match correctly against @[] and not recognize the IPv6
924 addresses as local.
925
f9daeae0
PH
926PH/02 The ipliteral router was not recognizing addresses of the form user@
927 [ipv6:....] because it didn't know about the "ipv6:" prefix.
928
7e66e54d
PH
929PH/03 Added disable_ipv6.
930
c8ea1597
PH
931PH/04 Changed $reply_address to use the raw form of the headers instead of the
932 decoded form, because it is most often used to construct To: headers
933 lines in autoreplies, and the decoded form may well be syntactically
934 invalid. However, $reply_address has leading white space removed, and all
935 newlines turned into spaces so that the autoreply transport does not
936 grumble.
937
911f6fde
PH
938PH/05 If group was specified without a user on a router, and no group or user
939 was specified on a transport, the group from the router was ignored.
940
47ca6d6c
PH
941PH/06 Increased the number of ACL variables to 20 of each type, and arranged
942 for visible compile-time settings that can be used to change these
943 numbers, for those that want even more. Backwards compatibility with old
944 spool files has been maintained. However, going back to a previous Exim
945 release will lost any variables that are in spool files.
946
ed0e9820
PH
947PH/07 Two small changes when running in the test harness: increase delay when
948 passing a TCP/IP connection to a new process, in case the original
949 process has to generate a bounce, and remove special handling of
950 127.0.0.2 (sic), which is no longer necessary.
951
eff37e47
PH
952PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
953 be the same on different OS.
954
1921d2ea
PH
955PH/09 Moved a debug statement in filter processing to avoid a race problem when
956 testing.
957
b3f69ca8
JJ
958JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
959 whether --show-vars was specified or not
960
961JJ/02 exipick: Added support for new ACL variable spool format introduced
962 in 4.61-PH/06
963
424a1c63
PH
964PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
965 syntactically invalid From: or Reply-to: line, and a filter used this to
966 generate an autoreply, and therefore failed to obtain an address for the
967 autoreply, Exim could try to deliver to a non-existent relative file
968 name, causing unrelated and misleading errors. What now happens is that
969 it logs this as a hard delivery error, but does not attempt to create a
970 bounce message.
971
7a100415
PH
972PH/11 The exinext utility has a -C option for testing purposes, but although
973 the given file was scanned by exinext itself; it wasn't being passed on
974 when Exim was called.
975
19b9dc85
PH
976PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
977 an end-of-file indication when reading a command response.
978
309bd837
PH
979PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
980 compiled. In many other places in Exim, IPv6 addresses are always
981 recognized, so I have changed this. It also means that IPv4 domain
982 literals of the form [IPV4:n.n.n.n] are now always recognized.
983
59e82a2a
PH
984PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
985 used if the router is not running as root, for example, when verifying at
986 ACL time, or when using -bh. The debugging output from this situation was
987 non-existent - all you got was a failure to exec. I have made two
988 changes:
989
990 (a) Failures to set uid/gid, the current directory, or a process leader
991 in a subprocess such as that created by queryprogram now generate
992 suitable debugging ouput when -d is set.
993
994 (b) The queryprogram router detects when it is not running as root,
995 outputs suitable debugging information if -d is set, and then runs
996 the subprocess without attempting to change uid/gid.
997
9edc04ce
PH
998PH/15 Minor change to Makefile for building test_host (undocumented testing
999 feature).
1000
1349e1e5
PH
1001PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1002 additional section of a DNS packet that returns MX or SRV records.
1003 Instead, it always explicitly searches for A/AAAA records. This avoids
1004 major problems that occur when a DNS server includes only records of one
1005 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1006 fixed another bug: if SRV records were looked up and the corresponding
1007 address records were *not* found in the additional section, the port
1008 values from the SRV records were lost.
1009
ea49d0e1
PH
1010PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1011 using the correct key (the original address) when searching the retry
1012 rules in order to find which one to use for generating the retry hint.
1013
064a94c9
PH
1014PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1015 adding the default one. Similarly, if it contains a Reply-To: header, the
1016 errors_reply_to option, if set, is not used.
1017
727071f8
PH
1018PH/19 When calculating a retry time, Exim used to measure the "time since
1019 failure" by looking at the "first failed" field in the retry record. Now
1020 it does not use this if it is later than than the arrival time of the
1021 message. Instead it uses the arrival time. This makes for better
1022 behaviour in cases where some deliveries succeed, thus re-setting the
1023 "first failed" field. An example is a quota failure for a huge message
1024 when small messages continue to be delivered. Without this change, the
1025 "time since failure" will always be short, possible causing more frequent
1026 delivery attempts for the huge message than are intended.
dd16e114 1027 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1028
f78eb7c6
PH
1029PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1030 $1, $2, $3) because the numerical variables can be reset during some
1031 expansion items (e.g. "match"), thereby losing the authentication data.
1032
21c28500
PH
1033PH/21 Make -bV show the size of off_t variables so that the test suite can
1034 decide whether to run tests for quotas > 2G.
1035
1036PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1037 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1038 filecount value is greater than 2G or if a quota value is greater than 2G
1039 on a system where the size of off_t is not greater than 4, a panic error
1040 is given.
1041
1688f43b
PH
1042PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1043 never match. The debug and -bh output now contains an explicit error
1044 message indicating a malformed IPv4 address or mask.
1045
1046PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1047 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1048 PH/23 above applies.
1049
9675b384
PH
1050PH/25 Do not write to syslog when running in the test harness. The only
1051 occasion when this arises is a failure to open the main or panic logs
1052 (for which there is an explicit test).
1053
6a3f1455
PH
1054PH/26 Added the /no_tell option to "control=freeze".
1055
dac79d3e
PH
1056PH/27 If a host name lookup failed very early in a connection, for example, if
1057 the IP address matched host_lookup and the reverse lookup yielded a name
1058 that did not have a forward lookup, an error message of the form "no IP
1059 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1060 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1061
5977a0b3
PH
1062PH/28 An enabling patch from MH: add new function child_open_exim2() which
1063 allows the sender and the authenticated sender to be set when
1064 submitting a message from within Exim. Since child_open_exim() is
1065 documented for local_scan(), the new function should be too.
1066
c91535f3
PH
1067PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1068 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1069 results in an empty string is now treated as unset.
1070
0d46a8c8
PH
1071PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1072
278c6e6c
PH
1073PH/31 Added sender_verify_fail logging option.
1074
2cbb4081
PH
1075PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1076 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1077 tidied the source and removed it altogether.
1078
3eef829e
PH
1079PH/33 When a queue run was abandoned because the load average was too high, a
1080 log line was always written; now it is written only if the queue_run log
1081 selector is set. In addition, the log line for abandonment now contains
1082 information about the queue run such as the pid. This is always present
1083 in "start" and "stop" lines but was omitted from the "abandon" line.
1084
1ab95fa6
PH
1085PH/34 Omit spaces between a header name and the colon in the error message that
1086 is given when verify = headers_syntax fails (if there are lots of them,
1087 the message gets confusing).
1088
230205fc
PH
1089PH/35 Change the default for dns_check_names_pattern to allow slashes within
1090 names, as there are now some PTR records that contain slashes. This check
1091 is only to protect against broken name servers that fall over on strange
1092 characters, so the fact that it applies to all lookups doesn't matter.
1093
75e0e026
PH
1094PH/36 Now that the new test suite is complete, we can remove some of the
1095 special code in Exim that was needed for the old test suite. For example,
1096 sorting DNS records because real resolvers return them in an arbitrary
1097 order. The new test suite's fake resolver always returns records in the
1098 same order.
1099
1100PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1101 bounces) except when queue_only is set, to avoid logging races between
1102 the different processes.
1103
145396a6
PH
1104PH/38 Panic-die if .include specifies a non-absolute path.
1105
3cd34f13
PH
1106PH/39 A tweak to the "H" retry rule from its user.
1107
11121d3d
JJ
1108JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1109 a label. They prevented compilation on older perls.
1110
1111JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1112 a warning to be raised on newish perls.
1113
1114JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1115 on queue. Changes to match documented behaviour of showing count of
1116 messages matching specified criteria.
1117
8def5aaf
PH
1118PH/40 Changed the default ident timeout from 30s to 5s.
1119
929ba01c
PH
1120PH/41 Added support for the use of login_cap features, on those BSD systems
1121 that have them, for controlling the resources used by pipe deliveries.
1122
2632889e
PH
1123PH/42 The content-scanning code uses fopen() to create files in which to put
1124 message data. Previously it was not paying any attention to the mode of
1125 the files. Exim runs with umask(0) because the rest of the code creates
1126 files with open(), and sets the required mode explicitly. Thus, these
1127 files were ending up world-writeable. This was not a big issue, because,
1128 being within the spool directory, they were not world-accessible. I have
1129 created a function called modefopen, which takes an additional mode
1130 argument. It sets umask(777), creates the file, chmods it to the required
1131 mode, then resets the umask. All the relevant calls to fopen() in the
1132 content scanning code have been changed to use this function.
1133
944a9c55
PH
1134PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1135 to 24 hours. This avoids potential overflow problems when processing G
1136 and H retry rules. I suspect nobody ever tinkers with this value.
1137
4a23603b
PH
1138PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1139
4730f942
PH
1140PH/45 When the plaintext authenticator is running as a client, the server's
1141 challenges are checked to ensure they are valid base64 strings. By
1142 default, the authentication attempt is cancelled if an invalid string is
1143 received. Setting client_ignore_invalid_base64 true ignores these errors.
1144 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1145 they are received. Thus, the responses can be made to depend on the
1146 challenges. If an invalid string is ignored, an empty string is placed in
1147 the variable.
1148
30dba1e6
PH
1149PH/46 Messages that are created by the autoreply transport now contains a
1150 References: header, in accordance with RFCs 2822 and 3834.
1151
382afc6b
PH
1152PH/47 Added authenticated_sender_force to the smtp transport.
1153
a86229cf
PH
1154PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1155
50c99ba6
PH
1156PH/49 Installed latest patch from the Sieve maintainer.
1157
d35e429d
PH
1158PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1159 was also set, the appendfile transport was unnecessarily scanning a
1160 directory of message files (e.g. for maildir delivery) to find the count
1161 of files (along with the size), even though it did not need this
1162 information. It now does the scan only if it needs to find either the
1163 size of the count of files.
1164
f90d018c
PH
1165PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1166
75def545
PH
1167PH/52 Two bugs concerned with error handling when the smtp transport is
1168 used in LMTP mode:
1169
1170 (i) Exim was not creating retry information for temporary errors given
1171 for individual recipients after the DATA command when the smtp transport
1172 was used in LMTP mode. This meant that they could be retried too
1173 frequently, and not timed out correctly.
1174
1175 (ii) Exim was setting the flag that allows error details to be returned
1176 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1177 recipients that were returned after the DATA command.
1178
1179PH/53 This is related to PH/52, but is more general: for any failing address,
1180 when detailed error information was permitted to be returned to the
1181 sender, but the error was temporary, then after the final timeout, only
1182 "retry timeout exceeded" was returned. Now it returns the full error as
1183 well as "retry timeout exceeded".
1184
c46782ef
PH
1185PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1186 do this, and (what is worse) MTAs that accept it.
1187
71fafd95
PH
1188PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1189 will now be deprecated.
1190
2c5db4fd
PH
1191PH/56 New os.c-cygwin from the Cygwin maintainer.
1192
9cf6b11a
JJ
1193JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1194 formats (previously only available in exim formats via -bpr, -bpru,
1195 and -bpra. Now also available in native and exiqgrep formats)
1196
1197JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1198 with very large, slow to parse queues
1199
1200JJ/08 exipick: added ! as generic prefix to negate any criteria format
1201
1202JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1203
898d150f
PH
1204PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1205 responses to authentication challenges, though it was showing the
1206 challenges; (ii) I've removed the CR characters from the debug output for
1207 SMTP output lines.
1208
46218253
PH
1209PH/58 Allow for the insertion of a newline as well as a space when a string
1210 is turned into more than one encoded-word during RFC 2047 encoding. The
1211 Sieve code now uses this.
1212
e97957bc
PH
1213PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1214 data_4xx, lost_connection, tls_required.
1215
81e509d7
PH
1216PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1217 message was being sent as an SMTP response.
1218
3d240ff7
PH
1219PH/61 Add -l and -k options to exicyclog.
1220
b37c4101
PH
1221PH/62 When verifying, if an address was redirected to one new address, so that
1222 verification continued, and the new address failed or deferred after
1223 having set something in $address_data, the value of $address_data was not
1224 passed back to the ACL. This was different to the case when no
1225 redirection occurred. The value is now passed back in both cases.
1226
79378e0f
PH
1227PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1228 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1229 use login_cap.h, so on its own it isn't the distinguishing feature. The
1230 new name refers directly to the setclassresources() function.
1231
e49c7bb4
PH
1232PH/65 Added configuration files for NetBSD3.
1233
d114ec46
PH
1234PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1235
f3d7df6c
PH
1236PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1237 is preferred over IPv4.
1238
715ab376
PH
1239PH/68 The bounce_return_message and bounce_return_body options were not being
1240 honoured for bounces generated during the reception of non-SMTP messages.
1241 In particular, this applied to messages rejected by the ACL. This bug has
1242 been fixed. However, if bounce_return_message is true and bounce_return_
1243 body is false, the headers that are returned for a non-SMTP message
1244 include only those that have been read before the error was detected.
1245 (In the case of an ACL rejection, they have all been read.)
1246
6b31b150
PH
1247PH/69 The HTML version of the specification is now built in a directory called
1248 spec_html instead of spec.html, because the latter looks like a path with
1249 a MIME-type, and this confuses some software.
1250
1251PH/70 Catch two compiler warnings in sieve.c.
1252
d515a917
PH
1253PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1254 function verify_get_ident() calls ip_connect() to connect a socket, but
1255 if the "connect()" function timed out, ip_connect() used to close the
1256 socket. However, verify_get_ident() also closes the socket later, and in
1257 between Exim writes to the log, which may get opened at this point. When
1258 the socket was closed in ip_connect(), the log could get the same file
1259 descriptor number as the socket. This naturally causes chaos. The fix is
1260 not to close the socket in ip_connect(); the socket should be closed by
1261 the function that creates it. There was only one place in the code where
1262 this was missing, in the iplookup router, which I don't think anybody now
1263 uses, but I've fixed it anyway.
1264
9b8fadde
PH
1265PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1266 well as to direct DNS lookups. Otherwise the handling of names in host
1267 lists is inconsistent and therefore confusing.
1268
214e2000 1269
5de37277
PH
1270Exim version 4.60
1271-----------------
1272
cc38ddbf
PH
1273PH/01 Two changes to the default runtime configuration:
1274
1275 (1) Move the checks for relay_from_hosts and authenticated clients from
1276 after to before the (commented out) DNS black list checks.
1277
1278 (2) Add control=submission to the relay_from_hosts and authenticated
1279 clients checks, on the grounds that messages accepted by these
1280 statements are most likely to be submissions.
5de37277 1281
72fdd6ae
PH
1282PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1283
1284 (1) Generate an error if the third argument for the ${prvs expansion is
1285 not a single digit.
1286
1287 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1288 string.
1289
1290 (3) Reset the variables that are obtained from the first argument of
1291 ${prvscheck and used in the second argument before leaving the code,
1292 because their memory is reclaimed, so using them afterwards may do
1293 silly things.
1294
1295 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1296 one (it's much easier than Tom thought :-).
1297
1298 (5) Because of (4), we can now allow for the use of $prvscheck_result
1299 inside the third argument.
cb9328de 1300
cb741023
PH
1301PH/03 For some reason, the default setting of PATH when running a command from
1302 a pipe transport was just "/usr/bin". I have changed it to
1303 "/bin:/usr/bin".
1304
f174f16e
PH
1305PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1306 anything to be listed in the output from -bV.
b2f5a032 1307
c25242d7
PH
1308PH/05 When a filter generated an autoreply, the entire To: header line was
1309 quoted in the delivery log line, like this:
1310
1311 => >A.N.Other <ano@some.domain> <original@ddress> ...
1312
1313 This has been changed so that it extracts the operative address. There
1314 may be more than one such address. If so, they are comma-separated, like
1315 this:
1316
1317 => >ano@some.domain,ona@other.domain <original@ddress> ...
1318
82c19f95
PH
1319PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1320 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1321 not being looked up in the rDNS to get a host name, Exim was showing the
1322 IP address twice in Received: lines, even though the IP addresses were
1323 identical. For example:
1324
1325 Received: from [1.2.3.4] (helo=[1.2.3.4])
1326
1327 However, if the real host name was known, it was omitting the HELO data
1328 if it matched the actual IP address. This has been tidied up so that it
1329 doesn't show the same IP address twice.
1330
d7ffbc12
PH
1331PH/07 When both +timestamp and +memory debugging was on, the value given by
1332 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1333 called by the debug printing, thereby overwriting the timestamp buffer.
1334 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1335
9f526266
PH
1336PH/08 When the original message was included in an autoreply transport, it
1337 always said "this is a copy of the message, including all the headers",
1338 even if body_only or headers_only was set. It now gives an appropriate
1339 message.
1340
87fcc8b9
PH
1341PH/09 Applied a patch from the Sieve maintainer which:
1342
1343 o fixes some comments
1344 o adds the (disabled) notify extension core
1345 o adds some debug output for the result of if/elsif tests
1346 o points to the current vacation draft in the documentation
1347 and documents the missing references header update
1348
1349 and most important:
1350
1351 o fixes a bug in processing the envelope test (when testing
1352 multiple envelope elements, the last element determinted the
1353 result)
1354
456682f5
PH
1355PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1356 Electronic Mail") by including:
1357
1358 Auto-submitted: auto-generated
1359
1360 in the messages that it generates (bounce messages and others, such as
1361 warnings). In the case of bounce messages for non-SMTP mesages, there was
1362 also a typo: it was using "Auto_submitted" (underscore instead of
1363 hyphen). Since every message generated by Exim is necessarily in response
1364 to another message, thes have all been changed to:
1365
1366 Auto-Submitted: auto-replied
1367
1368 in accordance with these statements in the RFC:
1369
1370 The auto-replied keyword:
1371
1372 - SHOULD be used on messages sent in direct response to another
1373 message by an automatic process,
1374
1375 - MUST NOT be used on manually-generated messages,
1376
1377 - MAY be used on Delivery Status Notifications (DSNs) and Message
1378 Disposition Notifications (MDNs),
1379
1380 - MUST NOT be used on messages generated by automatic or periodic
1381 processes, except for messages which are automatic responses to
1382 other messages.
1383
3e46c1aa
PH
1384PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1385 to the default Received: header definition.
456682f5 1386
49826d12
PH
1387PH/12 Added log selector acl_warn_skipped (default on).
1388
eba0c039
PH
1389PH/13 After a successful wildlsearch lookup, discard the values of numeric
1390 variables because (a) they are in the wrong storage pool and (b) even if
1391 they were copied, it wouldn't work properly because of the caching.
1392
a0d6ba8a
PH
1393PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1394 checking when decoding. Apparently there are clients that generate
1395 overlong encoded strings. Why am I not surprised?
1396
f0917727
PH
1397PH/15 If the first argument of "${if match_address" was not empty, but did not
1398 contain an "@" character, Exim crashed. Now it writes a panic log message
1399 and treats the condition as false.
1400
096fee00
PH
1401PH/16 In autoreply, treat an empty string for "once" the same as unset.
1402
024bd3c2
PH
1403PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1404 extension "envelope-auth". The code is finished and in agreement with
1405 other implementations, but there is no documentation so far and in fact,
1406 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1407 not changing the active code.
1408
1409 Print executed "if" and "elsif" statements when debugging is used. This
1410 helps a great deal to understand what a filter does.
1411
1412 Document more things not specified clearly in RFC3028. I had all this
1413 sorted out, when out of a sudden new issues came to my mind. Oops."
1414
df199fec
PH
1415PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1416 (Bugzilla #53).
1417
d27f1df3
PH
1418PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1419 canonical form (as documented). However, after a host name lookup from
1420 the IP address, check_host() was doing a simple string comparison with
1421 addresses acquired from the DNS when checking that the found name did
1422 have the original IP as one of its addresses. Since any found IPv6
1423 addresses are likely to be in abbreviated form, the comparison could
1424 fail. Luckily, there already exists a function for doing the comparison
1425 by converting both addresses to binary, so now that is used instead of
1426 the text comparison.
1427
96776534
PH
1428PH/20 There was another similar case to PH/19, when a complete host name was
1429 given in a host list; looking up its IP address could give an abbreviated
1430 form, whereas the current host's name might or might not be abbreviated.
1431 The same fix has been applied.
1432
5de37277 1433
9a799bc0
PH
1434Exim version 4.54
1435-----------------
1436
1437PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1438 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1439 It now does.
1440
99a4b039
PH
1441PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1442 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1443
1444PH/03 Typo: missing ".o" in src/pcre/Makefile.
1445
4b233853
PH
1446PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1447 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1448 Also, for "Auto-Submitted", treat anything other than "no" as
1449 non-personal, in accordance with RFC 3834. (Previously it treated
1450 anything starting "auto-" as non-personal.)
1451
8857ccfd
PH
1452TF/01 The control=submission/name=... option had a problem with syntax
1453 errors if the name included a slash character. The /name= option
1454 now slurps the rest of the string, so it can include any characters
1455 but it must come last in the list of options (after /sender_retain
1456 or /domain=).
1457
433a2980
PH
1458PH/05 Some modifications to the interface to the fake nameserver for the new
1459 testing suite.
1460
3e46c1aa 1461
9a799bc0 1462
e3a311ba
TK
1463Exim version 4.53
1464-----------------
1465
1466TK/01 Added the "success_on_redirect" address verification option. See
1467 NewStuff for rationale and an example.
1468
13b685f9
PH
1469PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1470
395ff96d
PH
1471PH/02 Patch to exigrep to allow it to work on syslog lines.
1472
5b68f6e4
PH
1473PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1474 fread() to skip over the body file's header line, because in Cygwin the
1475 header line is locked and is inaccessible.
1476
1ab52c69
PH
1477PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1478 co-exist for some time) to make it clear that it is the Exim ID that is
1479 referenced, not the Message-ID: header line.
1480
b07e6aa3
PH
1481PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1482 string_format() function, because snprintf() does not exist on all
1483 operating systems.
1484
254e032f
PH
1485PH/06 The use of forbid_filter_existstest now also locks out the use of the
1486 ${stat: expansion item.
1487
3af76a81
PH
1488PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1489 protocol synchronization error", to keep the pedants happy.
1490
2548ba04
PH
1491PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1492 well as for IRIX systems, when gcc is being used. See the host.c source
1493 file for comments.
1494
b6c6011d
PH
1495PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1496
cf39cf57
PH
1497PH/10 Named domain lists were not working if used in a queue_smtp_domains
1498 setting.
1499
f1513293
PH
1500PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1501 transport and to the smtp transport in LMTP mode.
1502
727549a4
PH
1503TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1504
af46795e
PH
1505PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1506 run a filter in a subprocess. This could lead to confusion in subsequent
1507 lookups in the parent process. There should also be a search_tidyup() at
1508 the end of the subprocess.
1509
d7b47fd0
PH
1510PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1511 only if the host matched helo_try_verify_hosts, which caused the
1512 verification to occur when the EHLO/HELO command was issued. The ACL just
1513 tested the remembered result. Now, if a previous verification attempt has
1514 not happened, "verify = helo" does it there and then.
1515
ee744174
JJ
1516JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1517
b582ab87
PH
1518TK/03 Fix log output including CR from clamd.
1519
41a13e0a
PH
1520PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1521 exist provoked a memory error which could cause a segfault.
1522
f625cc5a
PH
1523PH/15 Installed PCRE 6.2
1524
1525PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1526
21f7af35
PH
1527PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1528 of the problem. Specifically, suggested +O2 rather than +O1 for the
1529 HP-UX compiler.
1530
31480e42
PH
1531PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1532
2d280592
PH
1533PH/20 If a delivery was routed to a non-standard port by means of an SRV
1534 record, the port was not correctly logged when the outgoing_port log
1535 selector was set (it logged the transort's default port).
1536
7cd1141b
PH
1537PH/21 Added support for host-specific ports to manualroute, queryprogram,
1538 fallback_hosts, and "hosts" in the smtp transport.
1539
1540PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1541 host errors such as "Connection refused".
1542
750af86e
PH
1543PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1544 authentication with radiusclient 0.4.9:
1545
1546 - Error returned from rc_read_config was caught wrongly
1547 - Username/password not passed on to radius server due to wrong length.
1548
1549 The presumption is that some radiusclient API changes for 4.51/PH/17
1550 were not taken care of correctly. The code is still untested by me (my
1551 Linux distribution still has 0.3.2 of radiusclient), but it was
1552 contributed by a Radius user.
1553
1554PH/24 When doing a callout, the value of $domain wasn't set correctly when
1555 expanding the "port" option of the smtp transport.
1556
4304270b
TK
1557TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1558 while reading a MIME header. Thanks to Tom Hughes for a patch.
1559
750af86e
PH
1560PH/24 Include config.h inside local_scan.h so that configuration settings are
1561 available.
1562
64ffc24f
PH
1563PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1564 that in an ACL for RCPT (for example), you can examine exactly what was
1565 received.
1566
5dd9625b
PH
1567PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1568 commands, but it was not correctly comparing the address with the actual
1569 client host address. Thus, it would show the EHLO address in Received:
1570 header lines when this was not necessary.
1571
5591031b
PH
1572PH/27 Added the % operator to ${eval:}.
1573
ba18e66a
PH
1574PH/28 Exim tries to create and chdir to its spool directory when it starts;
1575 it should be ignoring failures (because with -C, for example, it has lost
1576 privilege). It wasn't ignoring creation failures other than "already
1577 exists".
1578
9cec981f
PH
1579PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1580 -bV or -d is used.
1581
aa2b5c79
PH
1582PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1583 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1584 too many continuations, the temporary file was not being removed, and the
1585 return code was incorrect.
aa2b5c79 1586
48a53b7f
PH
1587PH/31 Missing "BOOL" in function definition in filtertest.c.
1588
1c59d63b
PH
1589PH/32 Applied Sieve patches from the maintainer.
1590
671012da
TK
1591TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1592
1509d3a8
PH
1593PH/33 Added "verify = not_blind".
1594
1595PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1596 Local/Makefile (with some defaults set). These are used in built scripts
1597 such as exicyclog, but they have never been used in the exim_install
1598 script (though there are many overriding facilities there). I have
1599 arranged that the exim_install script now takes note of these two
1600 settings.
1601
1602PH/35 Installed configuration files for Dragonfly.
1603
2fe1a124
PH
1604PH/36 When a locally submitted message by a trusted user did not contain a
1605 From: header, and the sender address was obtained from -f or from an SMTP
1606 MAIL command, and the trusted user did not use -F to supply a sender
1607 name, $originator_name was incorrectly used when constructing a From:
1608 header. Furthermore, $originator_name was used for submission mode
1609 messages from external hosts without From: headers in a similar way,
1610 which is clearly wrong.
1611
8800895a
PH
1612PH/37 Added control=suppress_local_fixups.
1613
ccfdb010
PH
1614PH/38 When log_selector = +received_sender was set, and the addition of the
1615 sender made the log line's construction buffer exactly full, or one byte
1616 less than full, an overflow happened when the terminating "\n" was
1617 subsequently added.
1618
1130bfb0
PH
1619PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1620 when the result of a list match is failure because a DNS lookup failed.
1621
ebcb507f
PH
1622PH/40 RM_COMMAND is now used in the building process.
1623
c35e155c
PH
1624PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1625 the "build-* directories that it finds.
1626
95d1f782
PH
1627PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1628 address in a domain literal was a prefix of an interface address.
1629
fd6de02e
PH
1630PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1631 when verifying a sender address, unless rewrite_headers is false.
1632
58de37c5
PH
1633PH/44 Wrote a long comment about why errors_to addresses are verified as
1634 recipients, not senders.
1635
261cf466
TF
1636TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1637 the ratelimit ACL was added.
1638
3ee512ff
PH
1639PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1640
e08c430f
PH
1641PH/46 Added extra information about PostgreSQL errors to the error string.
1642
bef5a11f
PH
1643PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1644 avoiding the need to install special zones in a real server. This is
1645 backwards compatible; if it can't find the fake resolver, it drops back.
1646 Thus, both old and new test suites can be run.
1647
7546de58
TF
1648TF/02 Added util/ratelimit.pl
1649
e5d5a95f
TF
1650TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1651 clock is set back in time.
1652
2e88a017
TF
1653TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1654 Candler <B.Candler@pobox.com>.
1655
a5f65aa4
TF
1656TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1657 OK for addresses that are the result of redirections.
1658
e7726cbf
PH
1659PH/48 A number of further additions for the benefit of the new test suite,
1660 including a fake gethostbyname() that interfaces to the fake DNS resolver
1661 (see PH/47 above).
1662
a7fdad5b
TF
1663TF/06 The fix for widen_domains has also been applied to qualify_single and
1664 search_parents which are the other dnslookup options that can cause
1665 header rewrites.
1666
6af56900
PH
1667PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1668 type ("H").
1669
0925ede6
PH
1670PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1671
66afa403
TF
1672TF/07 Exim produced the error message "an SRV record indicated no SMTP
1673 service" if it encountered an MX record with an empty target hostname.
1674 The message is now "an MX or SRV record indicated no SMTP service".
1675
0154e85a
TF
1676TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1677 if the DNS of the sending site is misconfigured. This is quite a
1678 common situation. This change restores the behaviour of treating a
1679 helo verification defer as a failure.
1680
16f12c76
PH
1681PH/51 If self=fail was set on a router, the bounce message did not include the
1682 actual error message.
1683
bbe902f0 1684
e5a9dba6
PH
1685Exim version 4.52
1686-----------------
1687
1688TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1689
22c3b60b
PH
1690PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1691 command itself ended in error, the underlying message about the transport
1692 filter timeout was being overwritten with the pipe command error. Now the
1693 underlying error message should be appended to the second error message.
1694
06a9b4b5
PH
1695TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1696
c1ac6996
PH
1697PH/02 Reduce the amount of output that "make" produces by default. Full output
1698 can still be requested.
1699
9c7a242c
PH
1700PH/03 The warning log line about a condition test deferring for a "warn" verb
1701 was being output only once per connection, rather than after each
1702 occurrence (because it was using the same function as for successful
1703 "warn" verbs). This seems wrong, so I have changed it.
1704
87ba3f5f
PH
1705TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1706 it should not have, which might have caused a crash in the right
1707 circumstances, but probably never did.
1708
1709PH/04 Installed a modified version of Tony Finch's patch to make submission
1710 mode fix the return path as well as the Sender: header line, and to
1711 add a /name= option so that you can make the user's friendly name appear
1712 in the header line.
1713
29aba418
TF
1714TF/03 Added the control = fakedefer ACL modifier.
1715
fe0dab11
TF
1716TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1717 Mark Lowes for thorough testing.
870f6ba8 1718
11d337a4
TK
1719TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1720
1721TK/03 Merged latest SRS patch from Miles Wilton.
1722
415c8f3b
PH
1723PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1724 with the definition in sysexits.h (which is #included earlier).
1725 Fortunately, Exim does not actually use EX_OK. The code used to try to
1726 preserve the sysexits.h value, by assumimg that macro definitions were
1727 scanned for macro replacements. I have been disabused of this notion,
1728 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1729
958541e9
PH
1730PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1731 in the smtp transport. When a block could not be written in a single
1732 write() function, the timeout was being re-applied to each part-write.
1733 This seems wrong - if the receiver was accepting one byte at a time it
1734 would take for ever. The timeout is now adjusted when this happens. It
1735 doesn't have to be particularly precise.
1736
c206415f
TK
1737TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1738 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1739
2a4be8f9
PH
1740PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1741 without a domain if the check to <postmaster@domain> fails.
1742
1cba11c5
SC
1743SC/01 Eximstats: added -xls and the ability to specify output files
1744 (patch written by Frank Heydlauf).
1745
1746SC/02 Eximstats: use FileHandles for outputing results.
1747
1748SC/03 Eximstats: allow any combination of xls, txt, and html output.
1749
1750SC/04 Eximstats: fixed display of large numbers with -nvr option
1751
1752SC/05 Eximstats: fixed merging of reports with empty tables.
1753
1754SC/06 Eximstats: added the -include_original_destination flag
1755
1756SC/07 Eximstats: removed tabs and trailing whitespace.
1757
1005d00e
TK
1758TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1759
1760TK/06 MBOX spool code: Add real "From " MBOX separator line
1761 so the .eml file is really in mbox format (even though
1762 most programs do not really care). Patch from Alex Miller.
1763
1764TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1765 The latter is generated from $received_to and is only set if the
1766 message has one envelope recipient. SA can use these headers,
1767 obviously out-of-the-box. Patch from Alex Miller.
1768
9b4768fa
PH
1769PH/08 The ${def test on a variable was returning false if the variable's
1770 value was "0", contrary to what the specification has always said!
1771 The result should be true unless the variable is empty.
1772
1773PH/09 The syntax error of a character other than { following "${if
1774 def:variable_name" (after optional whitespace) was not being diagnosed.
1775 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1776 accidental colon was present, for example, could give incorrect results.
1777
0d7eb84a
PH
1778PH/10 Tidied the code in a number of places where the st_size field of a stat()
1779 result is used (not including appendfile, where other changes are about
1780 to be made).
1781
1782PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1783 This involved changing a lot of size variables from int to off_t. It
1784 should work with maildirs and everything.
1785
40727bee
TK
1786TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1787 spamd dying while we are connected to it.
1788
554d2369
TF
1789TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1790 <jgh@wizmail.org>
1791
1f922db1
PH
1792PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1793 function for BDB 4.3.
1794
ef213c3b
PH
1795PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1796
8ac170f3
PH
1797PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1798 the sources for PCRE have been re-arranged and more files are now
1799 involved.
1800
b1c749bb
PH
1801PH/15 The code I had for printing potentially long long variables in PH/11
1802 above was not the best (it lost precision). The length of off_t variables
1803 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1804 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1805 to be "long long int" or "long int". This is needed for the internal
1806 formatting function string_vformat().
b1c749bb 1807
4aac9b49
PH
1808PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1809 the configuration file to be ":syslog", then the script "guesses" where
1810 the logs files are, rather than using the compiled in default. In our
1811 case the guess is not the same as the compiled default, so the script
1812 suddenly stopped working when I started to use syslog. The patch checks
1813 to see if log_file_path is "". If so, it attempts to read it from exim
1814 with no configuration file to get the compiled in version, before it
1815 falls back to the previous guessing code."
1816
294520c8
TK
1817TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1818 implementing BATV in an Exim configuration. See NewStuff for the gory
1819 details.
1820
5bd022fe
PH
1821PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1822 Makefile that are specific to HP-UX.
1823
90e9ce59
PH
1824PH/18 If the "use_postmaster" option was set for a recipient callout together
1825 with the "random" option, the postmaster address was used as the MAIL
1826 FROM address for the random test, but not for the subsequent recipient
1827 test. It is now used for both.
1828
5ea81592
PH
1829PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1830 patch removes a few documentation additions to RFC 3028, because the
1831 latest draft now contains them. It adds the new en;ascii-case comparator
1832 and a new error check for 8bit text in MIME parts. Comparator and
1833 require names are now matched exactly. I enabled the subaddress
1834 extension, but it is not well tested yet (read: it works for me)."
1835
c6c2dc1d
PH
1836PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1837 rework some of the code of TK/09 above to avoid the hardwired use of
1838 "%lld" and "long long". Replaced the call to snprintf() with a call to
1839 string_vformat().
1840
fffffe4c
PH
1841PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1842 records point to non-existent hosts", "retry timeout exceeded", and
1843 "retry time not reached for any host after a long failure period".
ca02eafb 1844
9a26b6b2
PH
1845PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1846 experimental DomainKeys support:
1847
1848 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1849 (2) On an error such as an illegally used "control", the wrong name for
1850 the control was given.
1851
1852 These problems did NOT occur unless DomainKeys support was compiled.
1853
4aee0225
PH
1854PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1855
32d668a5
PH
1856PH/24 Added ${if match_ip condition.
1857
8187c3f3
PH
1858PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1859 databases so that it will be absolutely obvious if a crash occurs in the
1860 DB library. This is a regular occurrence (often caused by mis-matched
1861 db.h files).
1862
ff790e47 1863PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1864 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1865 picked up on a user's system that detects such things. There doesn't seem
1866 to be a gcc warning option for this - only an attribute that has to be
1867 put on the function's prototype. It seems that in Fedora Core 4 they have
1868 set this on a number of new functions. No doubt there will be more in due
1869 course.
ff790e47 1870
5417f6d1
PH
1871PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1872 specify a transport. However, if an address that was verified by such a
1873 router was the subject of a callout, Exim crashed because it tried to
1874 read the rcpt_include_affixes from the non-existent transport. Now it
1875 just assumes that the setting of that option is false. This bug was
1876 introduced by 4.51/PH/31.
1877
59cf8544
PH
1878PH/28 Changed -d+all to exclude +memory, because that information is very
1879 rarely of interest, but it makes the output a lot bigger. People tend to
1880 do -d+all out of habit.
1881
e7ad8a65
PH
1882PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1883 code in os-type was giving problems when libc.so lives in lib64, like on
1884 x86_64 Fedora Core.
1885
ade42478
PH
1886PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1887 aren't the modern standard, and it seems that some systems' include files
1888 don't always have them. Exim was already checking for some of the newer
1889 ones like T_AAAA, and defining it itself. I've added checks for all the
1890 record types that Exim uses.
1891
182ad5cf
PH
1892PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1893 not automatically generating a new one, as it is supposed to. This
1894 prevented TLS from working. If the file did exist, but contained invalid
1895 data, a new version was generated, as expected. It was only the case of a
1896 non-existent file that was broken.
1897
b0d9fc80
TK
1898TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1899 with a change in libdomainkeys > 0.64.
1900
1901TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1902 from DNS. If the selector record carries the flag, it now has
1903 precedence over the domain-wide flag.
1904
1905TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1906
47c7a64a
PH
1907PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1908 the use of a port name that isn't defined in /etc/services) occurred, the
1909 message was deferred as in a normal delivery, and thus remained on the
1910 spool, instead of being failed because of the mua_wrapper setting. This
1911 is now fixed, and I tidied up some of the mua_wrapper messages at the
1912 same time.
1913
a388bce4
SC
1914SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1915 the messages in a hash of arrays rather than using individual hashes.
1916 This is a bit cleaner and results in dramatic memory savings, albeit
1917 at a slight CPU cost.
1918
1919SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1920 as requested by Marc Sherman.
1921
1922SC/10 Eximstats: added histograms for user specified patterns as requested
1923 by Marc Sherman.
1924
0793e4ed
SC
1925SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1926
c58b88df
PH
1927PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1928 fopen() in the content-scanning modules that did not already have it.
1929
e7ad8a65 1930
7982096b
PH
1931Exim version 4.51
1932-----------------
1933
1a46a8c5
PH
1934TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1935 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1936
2f079f46 1937TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1938
1939TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1940
1941PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1942 to test Sieve filters that use "vacation".
1943
1944PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1945 that changes the way the GnuTLS parameters are stored in the cache file.
1946 The new format can be generated externally. For backward compatibility,
1947 if the data in the cache doesn't make sense, Exim assumes it has read an
1948 old-format file, and it generates new data and writes a new file. This
1949 means that you can't go back to an older release without removing the
1950 file.
1951
1952PH/03 A redirect router that has both "unseen" and "one_time" set does not
1953 work if there are any delivery delays because "one_time" forces the
1954 parent to be marked "delivered", so its unseen clone is never tried
1955 again. For this reason, Exim now forbids the simultaneous setting of
1956 these two options.
1957
1958PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1959 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1960 entry if you want to know the details. The fix, however, neglected to
1961 consider the case when local delivery batching is involved. The test for
1962 "previously delivered" was not happening when checking to see if an
1963 address could be batched with a previous (undelivered) one; under
1964 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1965 address.
1a46a8c5
PH
1966
1967PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1968 in its include files, and this causes problems building Exim.
1969
1970PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1971 header_syntax) but Exim was just ignoring anything given after a slash.
1972 In particular, this caused confusion with an attempt to use "verify =
1973 reverse_host_lookup/defer_ok". An error is now given when options are
1974 supplied for verify items that do not have them. (Maybe reverse_host_
1975 lookup should have a defer_ok option, but that's a different point.)
1976
1977PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1978 defined by RFC 821) to 2048, because there were problems with some AUTH
1979 commands, and RFC 1869 says the size should be increased for extended
1980 SMTP commands that take arguments.
1981
1982PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1983 Finch).
1984
1985PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1986 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1987
49c2d5ea
PH
1988PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1989 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1990 whatever). Otherwise the password may appear in the log. Following change
1991 PH/42 below, there is no longer a chance of it appearing in a bounce
1992 message.
49c2d5ea 1993
bf759a8b
PH
1994PH/11 Installed exipick version 20050225.0 from John Jetmore.
1995
83364d30
PH
1996PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1997 of its addresses was ever tried. (Bugzilla bug #2.)
1998
7999bbd7
PH
1999PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2000 the result incorrectly in the debug output. (It correctly added a newline
2001 to what was transported.)
2002
7dbf77c9
PH
2003TF/01 Added $received_time.
2004
74e0617f
PH
2005PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2006 commented out examples of how to interface to a virus scanner and to
2007 SpamAssassin. Also added commented examples of av_scanner and
2008 spamd_address settings.
2009
2f079f46
PH
2010PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2011 and controls are allowed in which ACLs. There were a couple of minor
2012 errors. Some of the entries in the conditions table (which is a table of
2013 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2014 negation of where the condition IS allowed.
2015
8c841523
PH
2016PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2017
7766a4f0
PH
2018PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2019 header file does not have a version number, so I've had to invent a new
2020 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2021 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2022 radiusclient), but it was contributed by a Radius user.
2023
8b417f2c
PH
2024PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2025 files or directories, for OpenSSL.
2026
901f42cb
PH
2027PH/19 When an Exim process that is running as root has to create an Exim log
2028 file, it does so in a subprocess that runs as exim:exim so as to get the
2029 ownership right at creation (otherwise, other Exim processes might see
2030 the file with the wrong ownership). There was no test for failure of this
2031 fork() call, which would lead to the process getting stuck as it waited
2032 for a non-existent subprocess. Forks do occasionally fail when resources
2033 run out. I reviewed all the other calls to fork(); they all seem to check
2034 for failure.
2035
f9b9210e
PH
2036PH/20 When checking for unexpected SMTP input at connect time (before writing
2037 the banner), Exim was not dealing correctly with a non-positive return
2038 from the read() function. If the client had disconnected by this time,
2039 the result was a log entry for a synchronization error with an empty
2040 string after "input=" when read() returned zero. If read() returned -1
2041 (an event I could not check), uninitialized data bytes were printed.
2042 There were reports of junk text (parts of files, etc) appearing after
2043 "input=".
2044
54cdb463
PH
2045PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2046
cf00dad6
PH
2047PH/22 Added support for macro redefinition, and (re)definition in between
2048 driver and ACL definitions.
2049
acb1b346
PH
2050PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2051 forgetting to use the resulting value; it was using the unexpanded value.
2052
c5ddb310
PH
2053PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2054 hadn't been configured. The fix is from Juergen Kreileder, who
2055 understands it better than I do:
2056
2057 "Here's what I see happening with three configured cyrus_sasl
2058 authenticators configured (plain, login, cram-md5):
2059
2060 On startup auth_cyrus_sasl_init() gets called for each of these.
2061 This means three calls to sasl_listmech() without a specified mech_list.
2062 => SASL tests which mechs of all available mechs actually work
2063 => three warnings about OTP not working
2064 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2065
2066 With the patch, sasl_listmech() also gets called three times. But now
2067 SASL's mech_list option is set to the server_mech specified in the the
2068 authenticator. Or in other words, the answer from sasl_listmech()
2069 gets limited to just the mech you're testing for (which is different
2070 for each call.)
2071 => the return list contains just 'plain' or 'login', 'cram-md5' or
2072 nothing depending on the value of ob->server_mech.
2073
2074 I've just tested the patch: Authentication still works fine,
2075 unavailable mechs specified in the exim configuration are still
2076 caught, and the auth.log warnings about OTP are gone."
2077
31619da6
PH
2078PH/25 When debugging is enabled, the contents of the command line are added
2079 to the debugging output, even when log_selector=+arguments is not
2080 specified.
2081
bebaf0fc
PH
2082PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2083 answer is "GNU", and only if the return is "GNU/something" is the answer
2084 "Linux".
2085
475fe28a
PH
2086PH/27 $acl_verify_message is now set immediately after the failure of a
2087 verification in an ACL, and so is available in subsequent modifiers. In
2088 particular, the message can be preserved by coding like this:
2089
2090 warn !verify = sender
2091 set acl_m0 = $acl_verify_message
2092
2093 Previously, $acl_verify_message was set only while expanding "message"
2094 and "log_message" when a very denied access.
2095
7e8bec7a
PH
2096PH/28 Modified OS/os.c-Linux with
2097
2098 -#ifndef OS_LOAD_AVERAGE
2099 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2100
2101 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2102 nomenclature these days.)
2103
e4a89c47
PH
2104PH/29 Installed patch from the Sieve maintainer that adds the options
2105 sieve_useraddress and sieve_subaddress to the redirect router.
2106
5ca2a9a1
PH
2107PH/30 In these circumstances:
2108 . Two addresses routed to the same list of hosts;
2109 . First host does not offer TLS;
2110 . First host accepts first address;
2111 . First host gives temporary error to second address;
2112 . Second host offers TLS and a TLS session is established;
2113 . Second host accepts second address.
2114 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2115 and peerdn, if requested) that were in fact used only for the second
2116 address.
7e8bec7a 2117
c688b954
PH
2118PH/31 When doing a callout as part of verifying an address, Exim was not paying
2119 attention to any local part prefix or suffix that was matched by the
2120 router that accepted the address. It now behaves in the same way as it
2121 does for delivery: the affixes are removed from the local part unless
2122 rcpt_include_affixes is set on the transport.
2123
fed77020
PH
2124PH/32 Add the sender address, as F=<...>, to the log line when logging a
2125 timeout during the DATA phase of an incoming message.
2126
7fe1560f
PH
2127PH/33 Sieve envelope tests were broken for match types other than :is. I have
2128 applied a patch sanctioned by the Sieve maintainer.
c688b954 2129
ebb6e6d5
PH
2130PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2131 the uid or gid is negative. A case of a negative gid caused this to be
2132 noticed. The fix allows for either to be negative.
2133
9c4e8f60
PH
2134PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2135 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2136 overlooked.
2137
2138PH/36 The change PH/12 above was broken. Fixed it.
2139
d7174846
PH
2140PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2141 the grounds that routing the same address twice would always produce the
2142 same answer. This might have been true once, but it is certainly no
2143 longer true now. Routing a child address may depend on the previous
2144 routing that produced that child. Some complicated redirection strategies
2145 went wrong when messages had multiple recipients, and made Exim's
2146 behaviour dependent on the order in which the addresses were given.
2147
2148 I have moved the duplicate checking until after the routing is complete.
2149 Exim scans the addresses that are assigned to local and remote
2150 transports, and removes any duplicates. This means that more work will be
2151 done, as duplicates will always all be routed, but duplicates are
2152 presumably rare, so I don't expect this is of any significance.
2153
2154 For deliveries to pipes, files, and autoreplies, the duplicate checking
2155 still happens during the routing process, since they are not going to be
2156 routed further.
2157
cfe75fc3
PH
2158PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2159 It corrects a timeout issue with spamd. This is Ian's comment: "The
2160 background is that sometimes spamd either never reads data from a
2161 connection it has accepted, or it never writes response data. The exiscan
2162 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2163 blindly assumes that writes won't block so it may never time out."
2164
be22d70e
PH
2165PH/39 Allow G after quota size as well as K and M.
2166
0612b098
PH
2167PH/40 The value set for $authenticated_id in an authenticator may not contain
2168 binary zeroes or newlines because the value is written to log lines and
2169 to spool files. There was no check on this. Now the value is run through
2170 the string_printing() function so that such characters are converted to
2171 printable escape sequences.
2172
2e0c1448
PH
2173PH/41 $message_linecount is a new variable that contains the total number of
2174 lines in the message. Compare $body_linecount, which is the count for the
2175 body only.
2176
447d236c
PH
2177PH/42 Exim no longer gives details of delivery errors for specific addresses in
2178 bounce and delay warning messages, except in certain special cases, which
2179 are as follows:
2180
2181 (a) An SMTP error message from a remote host;
2182 (b) A message specified in a :fail: redirection;
2183 (c) A message specified in a "fail" command in a system filter;
2184 (d) A message specified in a FAIL return from the queryprogram router;
2185 (e) A message specified by the cannot_route_message router option.
2186
2187 In these cases only, Exim does include the error details in bounce and
2188 warning messages. There are also a few cases where bland messages such
2189 as "unrouteable address" or "local delivery error" are given.
2190
d20976dc
PH
2191PH/43 $value is now also set for the "else" part of a ${run expansion.
2192
f656d135
PH
2193PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2194 being worked on, but at least Exim now implements the latest version to
2195 play with."
2196
2e2a30b4
PH
2197PH/45 In a pipe transport, although a timeout while waiting for the pipe
2198 process to complete was treated as a delivery failure, a timeout while
2199 writing the message to the pipe was logged, but erroneously treated as a
2200 successful delivery. Such timeouts include transport filter timeouts. For
2201 consistency with the overall process timeout, these timeouts are now
2202 treated as errors, giving rise to delivery failures by default. However,
2203 there is now a new Boolean option for the pipe transport called
2204 timeout_defer, which, if set TRUE, converts the failures into defers for
2205 both kinds of timeout. A transport filter timeout is now identified in
2206 the log output.
2207
9176e9f0
PH
2208PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2209 systems where "make" and "gmake" are different, calling "gmake" at top
2210 level broke things. I've arranged for the value of $(MAKE) to be passed
2211 from the Makefile to this script so that it can call the same version of
2212 "make".
2213
7982096b 2214
bbe902f0
PH
2215A note about Exim versions 4.44 and 4.50
2216----------------------------------------
2217
2218Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2219changes of various kinds. As a consequence, a big documentation update was
2220needed. This delayed the release for rather longer than seemed good, especially
2221in the light of a couple of (minor) security issues. Therefore, the changes
2222that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2223release. So 4.44 and 4.50 are in effect two different branches that both start
2224from 4.43.
2225
2226I have left the 4.50 change log unchanged; it contains all the changes since
22274.43. The change log for 4.44 is below; many of its items are identical to
2228those for 4.50. This seems to be the most sensible way to preserve the
2229historical information.
2230
2231
f7b63901 2232Exim version 4.50
495ae4b0
PH
2233-----------------
2234
5fe762f6
PH
2235 1. Minor wording change to the doc/README.SIEVE file.
2236
139059f6 2237 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2238 computation of the current number of files was incorrect.
495ae4b0 2239
7086e875
PH
2240 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2241 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2242 place.
2243
35af9f61
PH
2244 4. Give more explanation in the error message when the command for a transport
2245 filter fails to execute.
2246
b668c215
PH
2247 5. There are several places where Exim runs a non-Exim command in a
2248 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2249 was being done only for the command run by the queryprogram router. It is
2250 now done for all such subprocesses. The other cases are: ${run, transport
2251 filters, and the commands run by the lmtp and pipe transports.
2252
a494b1e1
PH
2253 6. Added CONFIGURE_GROUP build-time option.
2254
2255 7. Some older OS have a limit of 256 on the maximum number of file
2256 descriptors. Exim was using setrlimit() to set 1000 as a large value
2257 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2258 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2259
c5fcb476
PH
2260 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2261 was an oversight, and furthermore, ever since the addition of extra
2262 controls (e.g. 4.43/32), the checks on when to allow different forms of
2263 "control" were broken. There should now be diagnostics for all cases when a
2264 control that does not make sense is encountered.
2265
69358f02
PH
2266 9. Added the /retain_sender option to "control=submission".
2267
5be20824
PH
226810. $recipients is now available in the predata ACL (oversight).
2269
eb2c0248
PH
227011. Tidy the search cache before the fork to do a delivery from a message
2271 received from the command line. Otherwise the child will trigger a lookup
2272 failure and thereby defer the delivery if it tries to use (for example) a
2273 cached ldap connection that the parent has called unbind on.
2274
2a3eea10
PH
227512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2276 of $address_data from the recipient verification was clobbered by the
2277 sender verification.
2278
227913. The value of address_data from a sender verification is now available in
2280 $sender_address_data in subsequent conditions in the ACL statement.
2281
23c7ff99
PH
228214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2283
4deaf07d
PH
228415. Added a new option "connect=<time>" to callout options, to set a different
2285 connection timeout.
2286
926e1192
PH
228716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2288 was its contents. (It was OK if the option was not defined at all.)
2289
650edc6f
PH
229017. A "Completed" log line is now written for messages that are removed from
2291 the spool by the -Mrm option.
2292
2c7db3f5
PH
229318. New variables $sender_verify_failure and $recipient_verify_failure contain
2294 information about exactly what failed.
2295
3d235903
PH
229619. Added -dd to debug only the daemon process.
2297
7c7ad977
PH
229820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2299 handles timeouts, both on the server side and network timeouts. Renamed the
2300 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2301
981756db
PH
230221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2303 It is now set to "smtps".
2304
d4eb88df
PH
230522. $host_address is now set to the target address during the checking of
2306 ignore_target_hosts.
2307
230823. When checking ignore_target_hosts for an ipliteral router, no host name was
2309 being passed; this would have caused $sender_host_name to have been used if
2310 matching the list had actually called for a host name (not very likely,
2311 since this list is usually IP addresses). A host name is now passed as
2312 "[x.x.x.x]".
2313
7d468ab8
PH
231424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2315 code that specifies a non-restarting handler (typically sigaction() in
2316 modern systems) in an attempt to fix a rare and obscure crash bug.
2317
231825. Narrowed the window for a race in the daemon that could cause it to ignore
2319 SIGCHLD signals. This is not a major problem, because they are used only to
2320 wake it up if nothing else does.
2321
62c0818f
PH
232226. A malformed maildirsize file could cause Exim to calculate negative values
2323 for the mailbox size or file count. Odd effects could occur as a result.
2324 The maildirsize information is now recalculated if the size or filecount
2325 end up negative.
2326
26034054
PH
232727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2328 support for a long time. Removed HAVE_SYS_VFS_H.
2329
af66f652
PH
233028. Installed the latest version of exipick from John Jetmore.
2331
90af77f4
PH
233229. In an address list, if the pattern was not a regular expression, an empty
2333 subject address (from a bounce message) matched only if the pattern was an
2334 empty string. Non-empty patterns were not even tested. This was the wrong
2335 because it is perfectly reasonable to use an empty address as part of a
2336 database query. An empty address is now tested by patterns that are
2337 lookups. However, all the other forms of pattern expect the subject to
2338 contain a local part and a domain, and therefore, for them, an empty
2339 address still always fails if the pattern is not itself empty.
2340
d8ef3577
PH
234130. Exim went into a mad DNS loop when attempting to do a callout where the
2342 host was specified on an smtp transport, and looking it up yielded more
2343 than one IP address.
2344
5cb8cbc6
PH
234531. Re-factored the code for checking spool and log partition space into a
2346 function that finds that data and another that does the check. The former
2347 is then used to implement four new variables: $spool_space, $log_space,
2348 $spool_inodes, and $log_inodes.
2349
14702f5b
PH
235032. The RFC2047 encoding function was originally intended for short strings
2351 such as real names; it was not keeping to the 75-character limit for
2352 encoded words that the RFC imposes. It now respects the limit, and
2353 generates multiple encoded words if necessary. To be on the safe side, I
2354 have increased the buffer size for the ${rfc2047: expansion operator from
2355 1024 to 2048 bytes.
2356
063b1e99
PH
235733. It is now permitted to omit both strings after an "if" condition; if the
2358 condition is true, the result is "true". As before, when the second string
2359 is omitted, a false condition yields an empty string. This makes it less
2360 cumbersome to write custom ACL and router conditions.
2361
652e1b65
PH
236234. Failure to deliver a bounce message always caused it to be frozen, even if
2363 there was an errors_to setting on the router. The errors_to setting is now
2364 respected.
2365
6f0c9a4f
PH
236635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2367 canonical form (fully expanded) before being placed in
2368 $sender_host_address.
2369
33397d19
PH
237036. The table in the code that translates DNS record types into text (T_A to
2371 "A" for instance) was missing entries for NS and CNAME. It is just possible
2372 that this could have caused confusion if both these types were looked up
2373 for the same domain, because the text type is used as part of Exim's
2374 per-process caching. But the chance of anyone hitting this buglet seems
2375 very small.
2376
7bb56e1f
PH
237737. The dnsdb lookup has been extended in a number of ways.
2378
2379 (1) There is a new type, "zns", which walks up the domain tree until it
2380 finds some nameserver records. It should be used with care.
2381
ea3bc19b
PH
2382 (2) There is a new type, "mxh", which is like "mx" except that it returns
2383 just the host names, not the priorities.
2384
2385 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2386 looked up. The behaviour when one of the lookups defers can be
2387 controlled by a keyword.
7bb56e1f 2388
ea3bc19b 2389 (4) It is now possible to specify the separator character for use when
7bb56e1f 2390 multiple records are returned.
33397d19 2391
0bcb2a0e
PH
239238. The dnslists ACL condition has been extended: it is now possible to supply
2393 a list of IP addresses and/or domains to be looked up in a particular DNS
2394 domain.
2395
2ac0e484
PH
239639. Added log_selector=+queue_time_overall.
2397
4e1fde53
PH
239840. When running the queue in the test harness, wait just a tad after forking a
2399 delivery process, to get repeatability of debugging output.
2400
de365ded
PH
240141. Include certificate and key file names in error message when GnuTLS fails
2402 to set them up, because the GnuTLS error message doesn't include the name
2403 of the failing file when there is a problem reading it.
2404
f05da2e8
PH
240542. Allow both -bf and -bF in the same test run.
2406
d6453af2
PH
240743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2408
f7b63901
PH
240944. The "Exiscan patch" is now merged into the mainline Exim source.
2410
241145. Sometimes the final signoff response after QUIT could fail to get
2412 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2413 < 0 before doing a fflush(). This bug looks as though it goes back to the
2414 introduction of TLS in release 3.20, but "sometimes" must have been rare
2415 because the tests only now provoked it.
2416
a444213a
PH
241746. Reset the locale to "C" after calling embedded Perl, in case it was changed
2418 (this can affect the format of dates).
2419
0ec020ea
PH
242047. exim_tidydb, when checking for the continued existence of a message for
2421 which it has found a message-specific retry record, was not finding
2422 messages that were in split spool directories. Consequently, it was
2423 deleting retry records that should have stayed in existence.
2424
b1206957
PH
242548. Steve fixed some bugs in eximstats.
2426
242749. The SPA authentication driver was not abandoning authentication and moving
2428 on to the next authenticator when an expansion was forced to fail,
2429 contradicting the general specification for all authenticators. Instead it
2430 was generating a temporary error. It now behaves as specified.
2431
26dd5a95
PH
243250. The default ordering of permitted cipher suites for GnuTLS was pessimal
2433 (the order specifies the preference for clients). The order is now AES256,
2434 AES128, 3DES, ARCFOUR128.
2435
343b2385
PH
243651. Small patch to Sieve code - explicitly set From: when generating an
2437 autoreply.
2438
1c5466b9
PH
243952. Exim crashed if a remote delivery caused a very long error message to be
2440 recorded - for instance if somebody sent an entire SpamAssassin report back
2441 as a large number of 550 error lines. This bug was coincidentally fixed by
2442 increasing the size of one of Exim's internal buffers (big_buffer) that
2443 happened as part of the Exiscan merge. However, to be on the safe side, I
2444 have made the code more robust (and fixed the comments that describe what
2445 is going on).
2446
55ee9ee3
PH
244753. Now that there can be additional text after "Completed" in log lines (if
2448 the queue_time_overall log selector is set), a one-byte patch to exigrep
2449 was needed to allow it to recognize "Completed" as not the last thing in
2450 the line.
2451
d38f8232
PH
245254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2453 patch that reportedly fixes this has been added. I am not expert enough to
2454 create a test for it. This is what the patch creator wrote:
2455
2456 "I found a little strange behaviour of ldap code when working with
2457 Windows 2003 AD Domain, where users was placed in more than one
2458 Organization Units. When I tried to give exim partial DN, the exit code
2459 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2460 But simultaneously result of request was absolutely normal ldap result,
2461 so I produce this patch..."
2462
3295e65b
PH
2463 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2464 REFERENCE, so I have modified the code to exclude the patch when that macro
2465 is not defined.
2466
7102e136
PH
246755. Some experimental protocols are using DNS PTR records for new purposes. The
2468 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2469 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2470 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2471 CAN-2005-0021
7102e136 2472
3ca0ba97
PH
247356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2474
c2bcbe20
PH
247557. Double the size of the debug message buffer (to 2048) so that more of very
2476 long debug lines gets shown.
2477
18ce445d
PH
247858. The exicyclog utility now does better if the number of log files to keep
2479 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2480
1f5b4c3d
PH
248159. Two changes related to the smtp_active_hostname option:
2482
2483 (1) $smtp_active_hostname is now available as a variable.
2484 (2) The default for smtp_banner uses $smtp_active_hostname instead
2485 of $primary_hostname.
2486
b975ba52
PH
248760. The host_aton() function is supposed to be passed a string that is known
2488 to be a valid IP address. However, in the case of IPv6 addresses, it was
2489 not checking this. This is a hostage to fortune. Exim now panics and dies
2490 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2491 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2492 components; fortuitously, this particular loophole had already been fixed
2493 by change 4.50/55 above.
2494
2495 If there are any other similar loopholes, the new check in host_aton()
2496 itself should stop them being exploited. The report I received stated that
2497 data on the command line could provoke the exploit when Exim was running as
2498 exim, but did not say which command line option was involved. All I could
2499 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2500 running as the user.
ea3a6f44 2501 CAN-2005-0021
85b87bc2
PH
2502
250361. There was a buffer overflow vulnerability in the SPA authentication code
2504 (which came originally from the Samba project). I have added a test to the
2505 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2506 CAN-2005-0022
b975ba52 2507
17ffcae7
PH
250862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2509 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2510
d95f9fdb
PH
251163. The daemon start-up calls getloadavg() while still root for those OS that
2512 need the first call to be done as root, but it missed one case: when
2513 deliver_queue_load_max is set with deliver_drop_privilege. This is
2514 necessary for the benefit of the queue runner, because there is no re-exec
2515 when deliver_drop_privilege is set.
2516
86b8287f
PH
251764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2518 This has been fixed.
2519
60dc5e56
PH
252065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2521 was in use, was not putting the data itself into the right store pool;
2522 consequently, it could be overwritten for a subsequent message in the same
2523 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2524 the caching.)
2525
533244af
PH
252666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2527
a5a28604
PH
252867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2529 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2530 the function were treating the return as a boolean value, which happened to
2531 work because 0=false and not-0=true, but is not correct code.
2532
7e634d24
PH
253368. The host_aton() function was not handling scoped IPv6 addresses (those
2534 with, for example, "%eth0" on the end) correctly.
2535
3e11c26b
PH
253669. Fixed some compiler warnings in acl.c for the bitmaps specified with
2537 negated items (that is, ~something) in unsigned ints. Some compilers
2538 apparently mutter when there is no cast.
2539
6729cf78
PH
254070. If an address verification called from an ACL failed, and did not produce a
2541 user-specific message (i.e. there was only a "system" message), nothing was
2542 put in $acl_verify_message. In this situation, it now puts the system
2543 message there.
2544
00f00ca5
PH
254571. Change 4.23/11 added synchronization checking at the start of an SMTP
2546 session; change 4.31/43 added the unwanted input to the log line - except
2547 that it did not do this in the start of session case. It now does.
2548
c9bdd01c
PH
254972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2550 This is wrong and can cause the other end to generate a synchronization
2551 error if it is another Exim or anything else that does the synchronization
2552 check. A QUIT command is no longer sent after a timeout.
2553
d43194df
PH
255473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2555 during host lookups.
2556
fe5b5d0b
PH
255774. The defer_ok option of callout verification was not working if it was used
2558 when verifying addresses in header lines, that is, for this case:
2559
2560 verify = header_sender/callout=defer_ok
2561
76a2d7ba
PH
256275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2563 those file descriptors could be used for SMTP connections. If anything
2564 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2565 could be sent to the SMTP client, causing chaos. The daemon now opens
2566 stdin, stdout, and stderr to /dev/null when it puts itself into the
2567 background.
2568
256976. Arrange for output from Perl's "warn" command to be written to Exim's main
2570 log by default. The user can override this with suitable Perl magic.
2571
04f7d5b9
PH
257277. The use of log_message on a "discard" ACL verb, which is supposed to add to
2573 the log message when discard triggers, was not working for the DATA ACL or
2574 for the non-SMTP ACL.
2575
bc60667e
PH
257678. Error message wording change in sieve.c.
2577
bb6e88ff
PH
257879. If smtp_accept_max_per_host was set, the number of connections could be
2579 restricted to fewer than expected, because the daemon was trying to set up
2580 a new connection before checking whether the processes handling previous
2581 connections had finished. The check for completed processes is now done
2582 earlier. On busy systems, this bug wouldn't be noticed because something
2583 else would have woken the daemon, and it would have reaped the completed
2584 process earlier.
2585
1e70f85b
PH
258680. If a message was submitted locally by a user whose login name contained one
2587 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2588 It caused a spool format error. I have fixed the spool reading code. A
2589 related problem was that the "from" clause in the Received: line became
2590 illegal because of the space(s). It is now covered by ${quote_local_part.
2591
259281. Included the latest eximstats from Steve (adds average sizes to HTML Top
2593 tables).
2594
4e01f9d6
PH
259582. Updated OS/Makefile-AIX as per message from Mike Meredith.
2596
1ee1cef2
PH
259783. Patch from Sieve maintainer to fix unterminated string problem in
2598 "vacation" handling.
2599
6e2b4ccc
PH
260084. Some minor changes to the Linux configuration files to help with other
2601 OS variants using glibc.
2602
8e669ac1
PH
260385. One more patch for Sieve to update vacation handling to latest spec.
2604
495ae4b0 2605
bbe902f0
PH
2606----------------------------------------------------
2607See the note above about the 4.44 and 4.50 releases.
2608----------------------------------------------------
2609
2610
2611Exim version 4.44
2612-----------------
2613
2614 1. Change 4.43/35 introduced a bug that caused file counts to be
2615 incorrectly computed when quota_filecount was set in an appendfile
2616 transport
2617
2618 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2619 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2620 place.
2621
2622 3. Give more explanation in the error message when the command for a transport
2623 filter fails to execute.
2624
2625 4. There are several places where Exim runs a non-Exim command in a
2626 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2627 was being done only for the command run by the queryprogram router. It is
2628 now done for all such subprocesses. The other cases are: ${run, transport
2629 filters, and the commands run by the lmtp and pipe transports.
2630
2631 5. Some older OS have a limit of 256 on the maximum number of file
2632 descriptors. Exim was using setrlimit() to set 1000 as a large value
2633 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2634 systems. I've change it so that if it can't get 1000, it tries for 256.
2635
2636 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2637 was an oversight, and furthermore, ever since the addition of extra
2638 controls (e.g. 4.43/32), the checks on when to allow different forms of
2639 "control" were broken. There should now be diagnostics for all cases when a
2640 control that does not make sense is encountered.
2641
2642 7. $recipients is now available in the predata ACL (oversight).
2643
2644 8. Tidy the search cache before the fork to do a delivery from a message
2645 received from the command line. Otherwise the child will trigger a lookup
2646 failure and thereby defer the delivery if it tries to use (for example) a
2647 cached ldap connection that the parent has called unbind on.
2648
2649 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2650 of $address_data from the recipient verification was clobbered by the
2651 sender verification.
2652
265310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2654 was its contents. (It was OK if the option was not defined at all.)
2655
265611. A "Completed" log line is now written for messages that are removed from
2657 the spool by the -Mrm option.
2658
265912. $host_address is now set to the target address during the checking of
2660 ignore_target_hosts.
2661
266213. When checking ignore_target_hosts for an ipliteral router, no host name was
2663 being passed; this would have caused $sender_host_name to have been used if
2664 matching the list had actually called for a host name (not very likely,
2665 since this list is usually IP addresses). A host name is now passed as
2666 "[x.x.x.x]".
2667
266814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2669 code that specifies a non-restarting handler (typically sigaction() in
2670 modern systems) in an attempt to fix a rare and obscure crash bug.
2671
267215. Narrowed the window for a race in the daemon that could cause it to ignore
2673 SIGCHLD signals. This is not a major problem, because they are used only to
2674 wake it up if nothing else does.
2675
267616. A malformed maildirsize file could cause Exim to calculate negative values
2677 for the mailbox size or file count. Odd effects could occur as a result.
2678 The maildirsize information is now recalculated if the size or filecount
2679 end up negative.
2680
268117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2682 support for a long time. Removed HAVE_SYS_VFS_H.
2683
ea3a6f44 268418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2685
268619. Allow an empty sender to be matched against a lookup in an address list.
2687 Previously the only cases considered were a regular expression, or an
2688 empty pattern.
2689
269020. Exim went into a mad DNS lookup loop when doing a callout where the
2691 host was specified on the transport, if the DNS lookup yielded more than
2692 one IP address.
2693
ea3a6f44
NM
269421. The RFC2047 encoding function was originally intended for short strings
2695 such as real names; it was not keeping to the 75-character limit for
2696 encoded words that the RFC imposes. It now respects the limit, and
2697 generates multiple encoded words if necessary. To be on the safe side, I
2698 have increased the buffer size for the ${rfc2047: expansion operator from
2699 1024 to 2048 bytes.
bbe902f0 2700
ea3a6f44
NM
270122. Failure to deliver a bounce message always caused it to be frozen, even if
2702 there was an errors_to setting on the router. The errors_to setting is now
2703 respected.
bbe902f0
PH
2704
270523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2706 canonical form (fully expanded) before being placed in
2707 $sender_host_address.
2708
270924. Updated eximstats to version 1.33
2710
ea3a6f44
NM
271125. Include certificate and key file names in error message when GnuTLS fails
2712 to set them up, because the GnuTLS error message doesn't include the name
2713 of the failing file when there is a problem reading it.
bbe902f0
PH
2714
271526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2716 As per change 25.
bbe902f0 2717
ea3a6f44
NM
271827. Reset the locale to "C" after calling embedded Perl, in case it was changed
2719 (this can affect the format of dates).
bbe902f0 2720
ea3a6f44
NM
272128. exim_tidydb, when checking for the continued existence of a message for
2722 which it has found a message-specific retry record, was not finding
2723 messages that were in split spool directories. Consequently, it was
2724 deleting retry records that should have stayed in existence.
bbe902f0
PH
2725
272629. eximstats updated to version 1.35
2727 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2728 1.35 - bugfix such that pie charts by volume are generated correctly
2729
ea3a6f44
NM
273030. The SPA authentication driver was not abandoning authentication and moving
2731 on to the next authenticator when an expansion was forced to fail,
2732 contradicting the general specification for all authenticators. Instead it
2733 was generating a temporary error. It now behaves as specified.
bbe902f0 2734
ea3a6f44
NM
273531. The default ordering of permitted cipher suites for GnuTLS was pessimal
2736 (the order specifies the preference for clients). The order is now AES256,
2737 AES128, 3DES, ARCFOUR128.
bbe902f0 2738
ea3a6f44
NM
273931. Small patch to Sieve code - explicitly set From: when generating an
2740 autoreply.
bbe902f0 2741
ea3a6f44
NM
274232. Exim crashed if a remote delivery caused a very long error message to be
2743 recorded - for instance if somebody sent an entire SpamAssassin report back
2744 as a large number of 550 error lines. This bug was coincidentally fixed by
2745 increasing the size of one of Exim's internal buffers (big_buffer) that
2746 happened as part of the Exiscan merge. However, to be on the safe side, I
2747 have made the code more robust (and fixed the comments that describe what
2748 is going on).
bbe902f0 2749
ea3a6f44
NM
275033. Some experimental protocols are using DNS PTR records for new purposes. The
2751 keys for these records are domain names, not reversed IP addresses. The
2752 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2753 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2754 CAN-2005-0021
2755
ea3a6f44
NM
275634. The host_aton() function is supposed to be passed a string that is known
2757 to be a valid IP address. However, in the case of IPv6 addresses, it was
2758 not checking this. This is a hostage to fortune. Exim now panics and dies
2759 if the condition is not met. A case was found where this could be provoked
2760 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2761 components; fortuitously, this particular loophole had already been fixed
2762 by change 4.50/55 or 4.44/33 above.
2763
2764 If there are any other similar loopholes, the new check in host_aton()
2765 itself should stop them being exploited. The report I received stated that
2766 data on the command line could provoke the exploit when Exim was running as
2767 exim, but did not say which command line option was involved. All I could
2768 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2769 running as the user.
bbe902f0
PH
2770 CAN-2005-0021
2771
ea3a6f44
NM
277235. There was a buffer overflow vulnerability in the SPA authentication code
2773 (which came originally from the Samba project). I have added a test to the
2774 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2775 CAN-2005-0022
2776
ea3a6f44
NM
277736. The daemon start-up calls getloadavg() while still root for those OS that
2778 need the first call to be done as root, but it missed one case: when
2779 deliver_queue_load_max is set with deliver_drop_privilege. This is
2780 necessary for the benefit of the queue runner, because there is no re-exec
2781 when deliver_drop_privilege is set.
bbe902f0 2782
ea3a6f44
NM
278337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2784 was in use, was not putting the data itself into the right store pool;
2785 consequently, it could be overwritten for a subsequent message in the same
2786 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2787 the caching.)
bbe902f0 2788
ea3a6f44
NM
278938. Sometimes the final signoff response after QUIT could fail to get
2790 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2791 < 0 before doing a fflush(). This bug looks as though it goes back to the
2792 introduction of TLS in release 3.20, but "sometimes" must have been rare
2793 because the tests only now provoked it.
bbe902f0
PH
2794
2795
495ae4b0
PH
2796Exim version 4.43
2797-----------------
2798
2799 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2800 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2801 Now it returns an integer. A number of calls were still expecting a T/F
2802 return. Fortuitously, in all cases, the tests worked in OK situations,
2803 which is the norm. However, things would have gone wrong on any write
2804 failures on the smtp file descriptor. This function is used when sending
2805 messages over SMTP and also when doing verify callouts.
2806
2807 2. When Exim is called to do synchronous delivery of a locally submitted
2808 message (the -odf or -odi options), it no longer closes stderr before doing
2809 the delivery.
2810
2811 3. Implemented the mua_wrapper option.
2812
2813 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2814
2815 5. Implemented the functions header_remove(), header_testname(),
2816 header_add_at_position(), and receive_remove_recipient(), and exported them
2817 to local_scan().
2818
2819 6. If an ACL "warn" statement specified the addition of headers, Exim already
2820 inserted X-ACL-Warn: at the start if there was no header name. However, it
2821 was not making this test for the second and subsequent header lines if
2822 there were newlines in the string. This meant that an invalid header could
2823 be inserted if Exim was badly configured.
2824
2825 7. Allow an ACL "warn" statement to add header lines at the start or after all
2826 the Received: headers, as well as at the end.
2827
2828 8. Added the rcpt_4xx retry error code.
2829
2830 9. Added postmaster_mailfrom=xxx to callout verification option.
2831
283210. Added mailfrom=xxxx to the callout verification option, for verify=
2833 header_sender only.
2834
283511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2836 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2837
283812. Inserted some casts to stop certain compilers warning when using pointer
2839 differences as field lengths or precisions in printf-type calls (mostly
2840 affecting debugging statements).
2841
284213. Added optional readline() support for -be (dynamically loaded).
2843
284414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2845 same clock tick as a message's arrival, so that its received time was the
2846 same as the "first fail" time on the retry record, and that message
2847 remained on the queue past the ultimate address timeout, every queue runner
2848 would try a delivery (because it was past the ultimate address timeout) but
2849 after another failure, the ultimate address timeout, which should have then
2850 bounced the address, did not kick in. This was a "< instead of <=" error;
2851 in most cases the first failure would have been in the next clock tick
2852 after the received time, and all would be well.
2853
285415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2855 being recognized when the domain list was tested by the match_domain
2856 condition in an expansion string.
2857
285816. Added the ${str2b64: operator.
2859
286017. Exim was always calling setrlimit() to set a large limit for the number of
2861 processes, without checking whether the existing limit was already
2862 adequate. (It did check for the limit on file descriptors.) Furthermore,
2863 errors from getrlimit() and setrlimit() were being ignored. Now they are
2864 logged to the main and panic logs, but Exim does carry on, to try to do its
2865 job under whatever limits there are.
2866
286718. Imported PCRE 5.0.
2868
286919. Trivial typo in log message " temporarily refused connection" (the leading
2870 space).
2871
287220. If the log selector return_path_on_delivery was set and an address was
2873 redirected to /dev/null, the delivery process crashed because it assumed
2874 that a return path would always be set for a "successful" delivery. In this
2875 case, the whole delivery is bypassed as an optimization, and therefore no
2876 return path is set.
2877
287821. Internal re-arrangement: the function for sending a challenge and reading
2879 a response while authentication was assuming a zero-terminated challenge
2880 string. It's now changed to take a pointer and a length, to allow for
2881 binary data in such strings.
2882
288322. Added the cyrus_sasl authenticator (code supplied by MBM).
2884
288523. Exim was not respecting finduser_retries when seeking the login of the
2886 uid under which it was called; it was always trying 10 times. (The default
2887 setting of finduser_retries is zero.) Also, it was sleeping after the final
2888 failure, which is pointless.
2889
289024. Implemented tls_on_connect_ports.
2891
289225. Implemented acl_smtp_predata.
2893
289426. If the domain in control=submission is set empty, Exim assumes that the
2895 authenticated id is a complete email address when it generates From: or
2896 Sender: header lines.
2897
289827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2899 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2900 chown and chgrp in /bin and hostname in /usr/bin.
2901
290228. Exim was keeping the "process log" file open after each use, just as it
2903 does for the main log. This opens the possibility of it remaining open for
2904 long periods when the USR1 signal hits a daemon. Occasional processlog
2905 errors were reported, that could have been caused by this. Anyway, it seems
2906 much more sensible not to leave this file open at all, so that is what now
2907 happens.
2908
290929. The long-running daemon process does not normally write to the log once it
2910 has entered its main loop, and it closes the log before doing so. This is
2911 so that log files can straightforwardly be renamed and moved. However,
2912 there are a couple of unusual error situations where the daemon does write
2913 log entries, and I had neglected to close the log afterwards.
2914
291530. The text of an SMTP error response that was received during a remote
2916 delivery was being truncated at 512 bytes. This is too short for some of
2917 the long messages that one sometimes sees. I've increased the limit to
2918 1024.
2919
292031. It is now possible to make retry rules that apply only when a message has a
2921 specific sender, in particular, an empty sender.
2922
292332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2924 it possible to be selective about when SMTP synchronization is enforced.
2925
292633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2927
292832. Implemented hosts_connection_nolog.
2929
293033. Added an ACL for QUIT.
2931
293234. Setting "delay_warning=" to disable warnings was not working; it gave a
2933 syntax error.
2934
293535. Added mailbox_size and mailbox_filecount to appendfile.
2936
293736. Added control = no_multiline_responses to ACLs.
2938
293937. There was a bug in the logic of the code that waits for the clock to tick
2940 in the case where the clock went backwards by a substantial amount such
2941 that the microsecond fraction of "now" was more than the microsecond
2942 fraction of "then" (but the whole seconds number was less).
2943
294438. Added support for the libradius Radius client library this is found on
2945 FreeBSD (previously only the radiusclient library was supported).
2946
2947
2948Exim version 4.42
2949-----------------
2950
2951 1. When certain lookups returned multiple values in the form name=value, the
2952 quoting of the values was not always being done properly. Specifically:
2953 (a) If the value started with a double quote, but contained no whitespace,
2954 it was not quoted.
2955 (b) If the value contained whitespace other than a space character (i.e.
2956 tabs or newlines or carriage returns) it was not quoted.
2957 This fix has been applied to the mysql and pgsql lookups by writing a
2958 separate quoting function and calling it from the lookup code. The fix
2959 should probably also be applied to nisplus, ibase and oracle lookups, but
2960 since I cannot test any of those, I have not disturbed their existing code.
2961
2962 2. A hit in the callout cache for a specific address caused a log line with no
2963 reason for rejecting RCPT. Now it says "Previous (cached) callout
2964 verification failure".
2965
2966 3. There was an off-by-one bug in the queryprogram router. An over-long
2967 return line was truncated at 256 instead of 255 characters, thereby
2968 overflowing its buffer with the terminating zero. As well as fixing this, I
2969 have increased the buffer size to 1024 (and made a note to document this).
2970
2971 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2972 when Exim is waiting for an SMTP response from a remote server, Exim
2973 restarts its select() call on the socket, thereby resetting its timeout.
2974 This is not a problem when such interrupts are rare. Somebody set up a cron
2975 job to run exiwhat every 2 minutes, which is less than the normal select()
2976 timeout (5 or 10 minutes). This meant that the select() timeout never
2977 kicked in because it was always reset. I have fixed this by comparing the
2978 time when an interrupt arrives with the time at the start of the first call
2979 to select(). If more time than the timeout has elapsed, the interrupt is
2980 treated as a timeout.
2981
2982 5. Some internal re-factoring in preparation for the addition of Sieve
2983 extensions (by MH). In particular, the "personal" test is moved to a
2984 separate function, and given an option for scanning Cc: and Bcc: (which is
2985 not set for Exim filters).
2986
2987 6. When Exim created an email address using the login of the caller as the
2988 local part (e.g. when creating a From: or Sender: header line), it was not
2989 quoting the local part when it contained special characters such as @.
2990
2991 7. Installed new OpenBSD configuration files.
2992
2993 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2994 try to make them clearer.
2995
2996 9. Callout options, other than the timeout value, were being ignored when
2997 verifying sender addresses in header lines. For example, when using
2998
2999 verify = header_sender/callout=no_cache
3000
3001 the cache was (incorrectly) being used.
3002
300310. Added a missing instance of ${EXE} to the exim_install script; this affects
3004 only the Cygwin environment.
3005
300611. When return_path_on_delivery was set as a log selector, if different remote
3007 addresses in the same message used different return paths and parallel
3008 remote delivery occurred, the wrong values would sometimes be logged.
3009 (Whenever a remote delivery process finished, the return path value from
3010 the most recently started remote delivery process was logged.)
3011
301212. RFC 3848 specifies standard names for the "with" phrase in Received: header
3013 lines when AUTH and/or TLS are in use. This is the "received protocol"
3014 field. Exim used to use "asmtp" for authenticated SMTP, without any
3015 indication (in the protocol name) for TLS use. Now it follows the RFC and
3016 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3017 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3018 names appear in log lines as well as in Received: header lines.
3019
302013. Installed MH's patches for Sieve to add the "copy" and "vacation"
3021 extensions, and comparison tests, and to fix some bugs.
3022
302314. Changes to the "personal" filter test:
3024
3025 (1) The test was buggy in that it was just doing the equivalent of
3026 "contains" tests on header lines. For example, if a user's address was
3027 anne@some.where, the "personal" test would incorrectly be true for
3028
3029 To: susanne@some.where
3030
3031 This test is now done by extracting each address from the header in turn,
3032 and checking the entire address. Other tests that are part of "personal"
3033 are now done using regular expressions (for example, to check local parts
3034 of addresses in From: header lines).
3035
3036 (2) The list of non-personal local parts in From: addresses has been
3037 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3038 taken from the Sieve specification recommendations.
3039
3040 (3) If the message contains any header line starting with "List-" it is
3041 treated as non-personal.
3042
3043 (4) The test for "circular" in the Subject: header line has been removed
3044 because it now seems ill-conceived.
3045
304615. Minor typos in src/EDITME comments corrected.
3047
304816. Installed latest exipick from John Jetmore.
3049
305017. If headers_add on a router specified a text string that was too long for
3051 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3052 of string_sprintf() is now avoided.
3053
305418. $message_body_size was not set (it was always zero) when running the DATA
3055 ACL and the local_scan() function.
3056
305719. For the "mail" command in an Exim filter, no default was being set for
3058 the once_repeat time, causing a random time value to be used if "once" was
3059 specified. (If the value happened to be <= 0, no repeat happened.) The
3060 default is now 0s, meaning "never repeat". The "vacation" command was OK
3061 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3062 (I found it when inspecting the code).
3063
306420. There is now an overall timeout for performing a callout verification. It
3065 defaults to 4 times the callout timeout, which applies to individual SMTP
3066 commands during the callout. The overall timeout applies when there is more
3067 than one host that can be tried. The timeout is checked before trying the
3068 next host. This prevents very long delays if there are a large number of
3069 hosts and all are timing out (e.g. when the network connections are timing
3070 out). The value of the overall timeout can be changed by specifying an
3071 additional sub-option for "callout", called "maxwait". For example:
3072
3073 verify = sender/callout=5s,maxwait=20s
3074
307521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3076 to the end before writing, but this should make it even safer).
3077
307822. Exim was forgetting that it had advertised PIPELINING for the second and
3079 subsequent messages on an SMTP connection. It was also not resetting its
3080 memory on STARTTLS and an internal HELO.
3081
308223. When Exim logs an SMTP synchronization error within a session, it now
3083 records whether PIPELINING has been advertised or not.
3084
308524. Added 3 instances of "(long int)" casts to time_t variables that were being
3086 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3087 rather than long int.
3088
308925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3090
309126. Added the never_mail option to autoreply.
3092
3093
3094Exim version 4.41
3095-----------------
3096
3097 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3098 crash if the getsockname() call failed; this can happen if a connection is
3099 closed very soon after it is established. The problem was simply in the
3100 order in which certain operations were done, causing Exim to try to write
3101 to the SMTP stream before it had set up the file descriptor. The bug has
3102 been fixed by making things happen in the correct order.
3103
3104
3105Exim version 4.40
3106-----------------
3107
3108 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3109 before the connection was closed, thus losing the rejection response.
3110
3111 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3112 some early Solaris releases, but causes trouble in current releases where
3113 socklen_t is defined.
3114
3115 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3116 always exist.
3117
3118 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3119 configured.
3120
3121 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3122 that releasing the top of it at the end releases what was used for sub-
3123 expansions (unless the block got too big). However, discard this block if
3124 the first thing is a variable or header, so that we can use its block when
3125 it is dynamic (useful for very large $message_headers, for example).
3126
3127 6. Lookups now cache *every* query, not just the most recent. A new, separate
3128 store pool is used for this. It can be recovered when all lookup caches are
3129 flushed. Lookups now release memory at the end of their result strings.
3130 This has involved some general refactoring of the lookup sources.
3131
3132 7. Some code has been added to the store_xxx() functions to reduce the amount
3133 of flapping under certain conditions.
3134
3135 8. log_incoming_interface used to affect only the <= reception log lines. Now
3136 it causes the local interface and port to be added to several more SMTP log
3137 lines, for example "SMTP connection from", and rejection lines.
3138
3139 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3140
314110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3142
314311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3144 could be overwritten at the end of the current message (or the start of a
3145 new message if it was set in a HELO ACL). The value is now preserved for
3146 the duration of the SMTP connection.
3147
314812. If a transport had a headers_rewrite setting, and a matching header line
3149 contained an unqualified address, that address was qualified, even if it
3150 did not match any rewriting rules. The underlying bug was that the values
3151 of the flags that permit the existence of unqualified sender and recipient
3152 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3153 non-local messages, and by -bnq for local messages) were not being
3154 preserved with the message after it was received.
3155
315613. When Exim was logging an SMTP synchronization error, it could sometimes log
3157 "next input=" as part of the text comprising the host identity instead of
3158 the correct text. The code was using the same buffer for two different
3159 strings. However, depending on which order the printing function evaluated
3160 its arguments, the bug did not always show up. Under Linux, for example, my
3161 test suite worked just fine.
3162
316314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3164 doesn't work with some older versions of Perl. It has been changed to "my",
3165 which in any case is probably the better facility to use.
3166
316715. A really picky compiler found some instances of statements for creating
3168 error messages that either had too many or two few arguments for the format
3169 string.
3170
317116. The size of the buffer for calls to the DNS resolver has been increased
3172 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3173 for addresses that have a lot of PTR records. This alleviates a problem; it
3174 does not fully solve it.
3175
317617. A dnsdb lookup for PTR records that receives more data than will fit in the
3177 buffer now truncates the list and logs the incident, which is the same
3178 action as happens when Exim is looking up a host name and its aliases.
3179 Previously in this situation something unpredictable would happen;
3180 sometimes it was "internal error: store_reset failed".
3181
318218. If a server dropped the connection unexpectedly when an Exim client was
3183 using GnuTLS and trying to read a response, the client delivery process
3184 crashed while trying to generate an error log message.
3185
318619. If a "warn" verb in an ACL added multiple headers to a message in a single
3187 string, for example:
3188
3189 warn message = H1: something\nH2: something
3190
3191 the text was added as a single header line from Exim's point of view
3192 though it ended up OK in the delivered message. However, searching for the
3193 second and subsequent header lines using $h_h2: did not work. This has been
3194 fixed. Similarly, if a system filter added multiple headers in this way,
3195 the routers could not see them.
3196
319720. Expanded the error message when iplsearch is called with an invalid key to
3198 suggest using net-iplsearch in a host list.
3199
320021. When running tests using -bh, any delays imposed by "delay" modifiers in
3201 ACLs are no longer actually imposed (and a message to that effect is
3202 output).
3203
320422. If a "gecos" field in a passwd entry contained escaped characters, in
3205 particular, if it contained a \" sequence, Exim got it wrong when building
3206 a From: or a Sender: header from that name. A second bug also caused
3207 incorrect handling when an unquoted " was present following a character
3208 that needed quoting.
3209
321023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3211 was not being matched caselessly.
3212
321324. Arranged for all hyphens in the exim.8 source to be escaped with
3214 backslashes.
3215
321625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3217 properly. Recipient callout cache records were still being keyed to include
3218 the sender, even when use_sender was set false. This led to far more
3219 callouts that were necessary. The sender is no longer included in the key
3220 when use_sender is false.
3221
322226. Added "control = submission" modifier to ACLs.
3223
322427. Added the ${base62d: operator to decode base 62 numbers.
3225
322628. dnsdb lookups can now access SRV records.
3227
322829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3229 the configuration file.
3230
323130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3232 (-v) mode. This makes the output for a verbose queue run more intelligible.
3233
323431. Added a use_postmaster feature to recipient callouts.
3235
323632. Added the $body_zerocount variable, containing the number of binary zero
3237 bytes in the message body.
3238
323933. The time of last modification of the "new" subdirectory is now used as the
3240 "mailbox time last read" when there is a quota error for a maildir
3241 delivery.
3242
324334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3244
324535. Added +ignore_unknown as a special item in host lists.
3246
324736. Code for decoding IPv6 addresses in host lists is now included, even if
3248 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3249 address was recognized as an IP address, but was then not correctly decoded
3250 into binary, causing unexpected and incorrect effects when compared with
3251 another IP address.
3252
3253
3254Exim version 4.34
3255-----------------
3256
3257 1. Very minor rewording of debugging text in manualroute to say "list of
3258 hosts" instead of "hostlist".
3259
3260 2. If verify=header_syntax was set, and a header line with an unqualified
3261 address (no domain) and a large number of spaces between the end of the
3262 name and the colon was received, the reception process suffered a buffer
3263 overflow, and (when I tested it) crashed. This was caused by some obsolete
3264 code that should have been removed. The fix is to remove it!
3265
3266 3. When running in the test harness, delay a bit after writing a bounce
3267 message to get a bit more predictability in the log output.
3268
3269 4. Added a call to search_tidyup() just before forking a reception process. In
3270 theory, someone could use a lookup in the expansion of smtp_accept_max_
3271 per_host which, without the tidyup, could leave open a database connection.
3272
3273 5. Added the variables $recipient_data and $sender_data which get set from a
3274 lookup success in an ACL "recipients" or "senders" condition, or a router
3275 "senders" option, similar to $domain_data and $local_part_data.
3276
3277 6. Moved the writing of debug_print from before to after the "senders" test
3278 for routers.
3279
3280 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3281 problems for message scanning, either using a data ACL, or using
3282 local_scan() because the Received: header was not generated till after they
3283 were called (in order to set the time as the time of reception completion).
3284 I have revised the way this works. The header is now generated after the
3285 body is received, but before the ACL or local_scan() are called. After they
3286 are run, the timestamp in the header is updated.
3287
3288
3289Exim version 4.33
3290-----------------
3291
3292 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3293 before starting a queue runner without re-exec. This happened only when
3294 deliver_drop_privilege was set or when the Exim user was set to root. The
3295 effect of the bug was that timeouts during subsequent deliveries caused
3296 crashes instead of being properly handled. The handler is now left at its
3297 default (and expected) setting.
3298
3299 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3300 message, again when deliver_drop_privilege is set or Exim is run as root.
3301 The bug described in (1) was not present in this case, but the tidying up
3302 of the other signals was missing. I have made the two cases consistent.
3303
3304 3. The ignore_target_hosts setting on a manualroute router was being ignored
3305 for hosts that were looked up using the /MX notation.
3306
3307 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3308 in domain lists.
3309
3310 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3311 operated on the sender address. After changing the $sender_address to <>
3312 for the sender address verify, Exim was re-instated it as the original
3313 (before rewriting) address, but remembering that it had rewritten it, so it
3314 wasn't rewriting it again. This bug also had the effect of breaking the
3315 sender address verification caching when the sender address was rewritten.
3316
3317 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3318 This has been changed so that if the ip literal address matches
3319 ignore_target_hosts, the router declines.
3320
3321 7. Added expansion conditions match_domain, match_address, and match_local_
3322 part (NOT match_host).
3323
3324 8. The placeholder for the Received: header didn't have a length field set.
3325
3326 9. Added code to Exim itself and to exim_lock to test for a specific race
3327 condition that could lead to file corruption when using MBX delivery. The
3328 issue is with the lockfile that is created in /tmp. If this file is removed
3329 after a process has opened it but before that process has acquired a lock,
3330 there is the potential for a second process to recreate the file and also
3331 acquire a lock. This could lead to two Exim processes writing to the file
3332 at the same time. The added code performs the same test as UW imapd; it
3333 checks after acquiring the lock that its file descriptor still refers to
3334 the same named file.
3335
333610. The buffer for building added header lines was of fixed size, 8192 bytes.
3337 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3338 when Exim is built.
3339
334011. Added the smtp_active_hostname option. If used, this will typically be made
3341 to depend on the incoming interface address. Because $interface_address is
3342 not set up until the daemon has forked a reception process, error responses
3343 that can happen earlier (such as "too many connections") no longer contain
3344 a host name.
3345
334612. If an expansion in a condition on a "warn" statement fails because a lookup
3347 defers, the "warn" statement is abandoned, and the next ACL statement is
3348 processed. Previously this caused the whole ACL to be aborted.
3349
335013. Added the iplsearch lookup type.
3351
335214. Added ident_timeout as a log selector.
3353
335415. Added tls_certificate_verified as a log selector.
3355
335616. Added a global option tls_require_ciphers (compare the smtp transport
3357 option of the same name). This controls incoming TLS connections.
3358
335917. I finally figured out how to make tls_require_ciphers do a similar thing
3360 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3361 before starting the TLS session.
3362
336318. Tabs are now shown as \t in -bP output.
3364
336519. If the log selector return_path_on_delivery was set, Exim crashed when
3366 bouncing a message because it had too many Received: header lines.
3367
336820. If two routers both had headers_remove settings, and the first one included
3369 a superfluous trailing colon, the final name in the first list and the
3370 first name in the second list were incorrectly joined into one item (with a
3371 colon in the middle).
3372
3373
3374Exim version 4.32
3375-----------------
3376
3377 1. Added -C and -D options to the exinext utility, mainly to make it easier
3378 to include in the automated testing, but these could be helpful when
3379 multiple configurations are in use.
3380
3381 2. The exinext utility was not formatting the output nicely when there was
3382 an alternate port involved in the retry record key, nor when there was a
3383 message id as well (for retries that were specific to a specific message
3384 and a specific host). It was also confused by IPv6 addresses, because of
3385 the additional colons they contain. I have fixed the IPv4 problem, and
3386 patched it up to do a reasonable job for IPv6.
3387
3388 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3389 delivery, the log line now contains "pipelined" if PIPELINING was used.
3390
3391 4. An SMTP transport process used to panic and die if the bind() call to set
3392 an explicit outgoing interface failed. This has been changed; it is now
3393 treated in the same way as a connect() failure.
3394
3395 5. A reference to $sender_host_name in the part of a conditional expansion
3396 that was being skipped was still causing a DNS lookup. This no longer
3397 occurs.
3398
3399 6. The def: expansion condition was not recognizing references to header lines
3400 that used bh_ and bheader_.
3401
3402 7. Added the _cache feature to named lists.
3403
3404 8. The code for checking quota_filecount in the appendfile transport was
3405 allowing one more file than it should have been.
3406
3407 9. For compatibility with Sendmail, the command line option
3408
3409 -prval:sval
3410
3411 is equivalent to
3412
3413 -oMr rval -oMs sval
3414
3415 and sets the incoming protocol and host name (for trusted callers). The
3416 host name and its colon can be omitted when only the protocol is to be set.
3417 Note the Exim already has two private options, -pd and -ps, that refer to
3418 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3419 "s", but I don't think that's a major issue.
3420
342110. A number of refactoring changes to the code, none of which should affect
3422 Exim's behaviour:
3423
3424 (a) The number of logging options was getting close to filling up the
3425 32-bit word that was used as a bit map. I have split them into two classes:
3426 those that are passed in the argument to log_write(), and those that are
3427 only ever tested independently outside of that function. These are now in
3428 separate 32-bit words, so there is plenty of room for expansion again.
3429 There is no change in the user interface or the logging behaviour.
3430
3431 (b) When building, for example, log lines, the code previously used a
3432 macro that called string_cat() twice, in order to add two strings. This is
3433 not really sufficiently general. Furthermore, there was one instance where
3434 it was actually wrong because one of the argument was used twice, and in
3435 one call a function was used. (As it happened, calling the function twice
3436 did not affect the overall behaviour.) The macro has been replaced by a
3437 function that can join an arbitrary number of extra strings onto a growing
3438 string.
3439
3440 (c) The code for expansion conditions now uses a table and a binary chop
3441 instead of a serial search (which was left over from when there were very
3442 few conditions). Also, it now recognizes conditions like "pam" even when
3443 the relevant support is not compiled in: a suitably worded error message is
3444 given if an attempt is made to use such a condition.
3445
344611. Added ${time_interval:xxxxx}.
3447
344812. A bug was causing one of the ddress fields not to be passed back correctly
3449 from remote delivery subprocesses. The field in question was not being
3450 subsequently used, so this caused to problems in practice.
3451
345213. Added new log selectors queue_time and deliver_time.
3453
345414. Might have fixed a bug in maildirsizefile handling that threw up
3455 "unexpected character" debug warnings, and recalculated the data
3456 unnecessarily. In any case, I expanded the warning message to give more
3457 information.
3458
345915. Added the message "Restricted characters in address" to the statements in
3460 the default ACL that block characters like @ and % in local parts.
3461
346216. Change 71 for release 4.31 proved to be much less benign that I imagined.
3463 Three changes have been made:
3464
3465 (a) There was a serious bug; a negative response to MAIL caused the whole
3466 recipient domain to be cached as invalid, thereby blocking all messages
3467 to all local parts at the same domain, from all senders. This bug has
3468 been fixed. The domain is no longer cached after a negative response to
3469 MAIL if the sender used is not empty.
3470
3471 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3472 been restored.
3473
3474 (c) A new callout option, "use_sender" has been added for people who want
3475 the modified behaviour.
3476
3477
3478Exim version 4.31
3479-----------------
3480
3481 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3482 Larry Rosenman.
3483
3484 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3485 indeed breaks things for older releases.
3486
3487 3. Added additional logging to the case where there is a problem reading data
3488 from a filter that is running in a subprocess using a pipe, in order to
3489 try to track down a specific problem.
3490
3491 4. Testing facility fudge: when running in the test harness and attempting
3492 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3493 getting "No route to host". Convert this to a timeout.
3494
3495 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3496 warning.
3497
3498 6. Some OS don't have socklen_t but use size_t instead. This affects the
3499 fifth argument of getsockopt() amongst other things. This is now
3500 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3501 can be set for individual OS. I have set it for SunOS5, OSF1, and
3502 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3503 some earlier ones do not.
3504
3505 7. Change 4.30/15 was not doing the test caselessly.
3506
3507 8. The standard form for an IPv6 address literal was being rejected by address
3508 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3509 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3510 this, as well as the form without the "IPv6" on the front (but only when
3511 address literals are enabled, of course).
3512
3513 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3514
351510. Exim crashed if a message with an empty sender address specified by -f
3516 encountered a router with an errors_to setting. This could be provoked only
3517 by a command such as
3518
3519 exim -f "" ...
3520
3521 where an empty string was supplied; "<>" did not hit this bug.
3522
352311. Installed PCRE release 4.5.
3524
352512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3526 remained set. It is now erased.
3527
352813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3529 times from message ids (which are base 36 rather than the normal 62).
3530
353114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3532 were being counted as actual protocol errors, and logged if the log
3533 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3534 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3535 and DATA following a set of rejected RCPTs do not count as protocol errors.
3536 In other words, Exim assumes they were pipelined, though this may not
3537 actually be the case. Of course, in all cases the client gets an
3538 appropriate error code.
3539
354015. If a lookup fails in an ACL condition, a message about the failure may
3541 be available; it is used if testing the ACL cannot continue, because most
3542 such messages specify what the cause of the deferral is. However, some
3543 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3544 that caused an old message to be retained and used if a later statement
3545 caused a defer, replacing the real cause of the deferral.
3546
354716. If an IP address had so many PTR records that the DNS lookup buffer
3548 was not large enough to hold them, Exim could crash while trying to process
3549 the truncated data. It now detects and logs this case.
3550
355117. Further to 4.21/58, another change has been made: if (and only if) the
3552 first line of a message (the first header line) ends with CRLF, a bare LF
3553 in a subsequent header line has a space inserted after it, so as not to
3554 terminate the header.
3555