Initial work removing PCRE from dist. Documentation needs to be updated. Related...
[exim.git] / doc / doc-txt / ChangeLog
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47db1125 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.536 2007/11/12 13:02:19 nm4 Exp $
495ae4b0
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
47db1125
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6Exim version 4.69
7-----------------
8
4b3504d0
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9TK/01 Add preliminary DKIM support. Currently requires a forked version of
10 ALT-N's libdkim that I have put here:
11 http://duncanthrax.net/exim-experimental/
12
13 Note to Michael Haardt: I had to rename some vars in sieve.c. They
14 were called 'true' and it seems that C99 defines that as a reserved
15 keyword to be used with 'bool' variable types. That means you could
16 not include C99-style headers which use bools without triggering
17 build errors in sieve.c.
18
81ea09ca
NM
19NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
20 as mailq or other aliases. Changed the --help handling significantly
21 to do whats expected. exim_usage() emits usage/help information.
22
f13cddcb
SC
23SC/01 Added the -bylocaldomain option to eximstats.
24
8ad076b2
NM
25NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr
26
a843aaa6
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27NM/03 Bugzilla 613: Documentation fix for acl_not_smtp
28
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29NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall)
30
31
eb4c0de6
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32Exim version 4.68
33-----------------
34
35PH/01 Another patch from the Sieve maintainer.
36
6a3bceb1
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37PH/02 When an IPv6 address is converted to a string for single-key lookup
38 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
39 dots are used instead of colons so that keys in lsearch files need not
40 contain colons. This was done some time before quoting was made available
41 in lsearch files. However, iplsearch files do require colons in IPv6 keys
42 (notated using the quote facility) so as to distinguish them from IPv4
43 keys. This meant that lookups for IP addresses in host lists did not work
44 for iplsearch lookups.
45
46 This has been fixed by arranging for IPv6 addresses to be expressed with
47 colons if the lookup type is iplsearch. This is not incompatible, because
48 previously such lookups could never work.
49
50 The situation is now rather anomolous, since one *can* have colons in
51 ordinary lsearch keys. However, making the change in all cases is
52 incompatible and would probably break a number of configurations.
53
2e30fa9d
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54TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
55 version.
56
0806a9c5
MH
57MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
58 conversion specification without a maximum field width, thereby enabling
59 a rogue spamd server to cause a buffer overflow. While nobody in their
60 right mind would setup Exim to query an untrusted spamd server, an
61 attacker that gains access to a server running spamd could potentially
62 exploit this vulnerability to run arbitrary code as the Exim user.
63
ae276964
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64TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
65 $primary_hostname instead of what libspf2 thinks the hosts name is.
66
0f2cbd1b
MH
67MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
68 a directory entry by the name of the lookup key. Previously, if a
69 symlink pointed to a non-existing file or a file in a directory that
70 Exim lacked permissions to read, a lookup for a key matching that
71 symlink would fail. Now it is enough that a matching directory entry
72 exists, symlink or not. (Bugzilla 503.)
73
2b85bce7
PH
74PH/03 The body_linecount and body_zerocount variables are now exported in the
75 local_scan API.
76
93655c46
PH
77PH/04 Added the $dnslist_matched variable.
78
6c512171
PH
79PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
80 This means they are set thereafter only if the connection becomes
81 encrypted.
82
83PH/06 Added the client_condition to authenticators so that some can be skipped
84 by clients under certain conditions.
85
aa6dc513
PH
86PH/07 The error message for a badly-placed control=no_multiline_responses left
87 "_responses" off the end of the name.
88
a96603a0
PH
89PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
90
8f240103
PH
91PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
92 (without spaces) instead of just copying the configuration text.
93
94PH/10 Added the /noupdate option to the ratelimit ACL condition.
95
d677b2f2
PH
96PH/11 Added $max_received_linelength.
97
d52120f2
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98PH/12 Added +ignore_defer and +include_defer to host lists.
99
64f2600a
PH
100PH/13 Installed PCRE version 7.2. This needed some changes because of the new
101 way in which PCRE > 7.0 is built.
102
8669f003
PH
103PH/14 Implemented queue_only_load_latch.
104
a4dc33a8
PH
105PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
106 MAIL command. The effect was to mangle the value on 64-bit systems.
107
d6a60c0f
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108PH/16 Another patch from the Sieve maintainer.
109
8f128379
PH
110PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
111
8932dffe
PH
112PH/18 If a system quota error occurred while trying to create the file for
113 a maildir delivery, the message "Mailbox is full" was not appended to the
114 bounce if the delivery eventually timed out. Change 4.67/27 below applied
115 only to a quota excession during the actual writing of the file.
d6a60c0f 116
ddea74fa 117PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
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118 characters?) which causes problems in log lines. The DN values are now
119 passed through string_printing() before being added to log lines.
120
ddea74fa 121PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
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122 and InterBase are left for another time.)
123
ddea74fa
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124PH/21 Added message_body_newlines option.
125
ce9f225c
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126PH/22 Guard against possible overflow in moan_check_errorcopy().
127
19897d52
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128PH/23 POSIX allows open() to be a macro; guard against that.
129
bc64a74d
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130PH/24 If the recipient of an error message contained an @ in the local part
131 (suitably quoted, of course), incorrect values were put in $domain and
132 $local_part during the evaluation of errors_copy.
133
eb4c0de6 134
b4ed4da0
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135Exim version 4.67
136-----------------
137
22ad45c9
MH
138MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
139 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
140 Jan Srzednicki.
141
b4ed4da0
PH
142PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
143 issue a MAIL command.
144
431b7361
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145PH/02 In an ACL statement such as
146
147 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
148
149 if a client was not listed at all, or was listed with a value other than
150 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
151 the condition was not true (as it should be), so access was not denied.
152 The bug was that the ! inversion was incorrectly passed on to the second
153 item. This has been fixed.
154
155PH/03 Added additional dnslists conditions == and =& which are different from
156 = and & when the dns lookup returns more than one IP address.
157
83da1223
PH
158PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
159 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
160
54fc8428
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161PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
162 FSYNC, which compiles an option called disable_fsync that allows for
163 bypassing fsync(). The documentation is heavily laced with warnings.
164
34c5e8dd
SC
165SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
166
bbe15da8
PH
167PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
168 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
169 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
170 including adding "make clean"; (3) Added -fPIC when compiling the test
171 dynamically loaded module, to get rid of a warning.
172
0e8a9471
MH
173MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
174 message fails, move_frozen_messages = true and ignore_bounce_errors_after
175 = 0s. The bug is otherwise harmless.
176
f0872424
PH
177PH/07 There was a bug in the dovecot authenticator such that the value of
178 $auth1 could be overwritten, and so not correctly preserved, after a
179 successful authentication. This usually meant that the value preserved by
180 the server_setid option was incorrect.
181
b01dd148
PH
182PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
183
6bf342e1
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184PH/09 Installed PCRE release 7.0.
185
273f34d0
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186PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
187 run for batched SMTP input. It is now run at the start of every message
188 in the batch. While fixing this I discovered that the process information
189 (output by running exiwhat) was not always getting set for -bs and -bS
190 input. This is fixed, and it now also says "batched" for BSMTP.
191
cf8b11a5
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192PH/11 Added control=no_pipelining.
193
41c7c167
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194PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
195 patch, slightly modified), and move the expansion of helo_data till after
196 the connection is made in the smtp transport (so it can use these
197 values).
198
9c57cbc0
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199PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
200
f3f065bb
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201PH/14 Added log_selector = +pid.
202
047bdd8c
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203PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
204
0ce9abe6
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205PH/16 Add ${if forany and ${if forall.
206
0e22dfd1
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207PH/17 Added dsn_from option to vary the From: line in DSNs.
208
4c590bd1
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209PH/18 Flush SMTP output before performing a callout, unless control =
210 no_callout_flush is set.
211
09945f1e
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212PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
213 was true (the default) a successful delivery failed to delete the retry
214 item, thus causing premature timeout of the address. The bug is now
215 fixed.
216
c51b8e75
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217PH/20 Added hosts_avoid_pipelining to the smtp transport.
218
e28326d8
PH
219PH/21 Long custom messages for fakedefer and fakereject are now split up
220 into multiline reponses in the same way that messages for "deny" and
221 other ACL rejections are.
222
75b1493f
PH
223PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
224 with slight modification.
225
7c5214ec
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226PH/23 Applied sieve patches from the maintainer "tracking the latest notify
227 draft, changing the syntax and factoring some duplicate code".
228
4311097e
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229PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
230 for deliveries of the second and subsequent messages over the same SMTP
231 connection.
232
29f89cad
PH
233PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
234 ${reduce, with only minor "tidies".
235
5e687460
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236SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
237
c3611384
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238PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
239 expansion side effects.
240
5a11a7b4
PH
241PH/27 When a message times out after an over-quota error from an Exim-imposed
242 quota, the bounce message says "mailbox is full". This message was not
243 being given when it was a system quota that was exceeded. It now should
244 be the same.
245
0e20aff9
MH
246MH/03 Made $recipients available in local_scan(). local_scan() already has
247 better access to the recipient list through recipients_list[], but
248 $recipients can be useful in postmaster-provided expansion strings.
249
ca86f471
PH
250PH/28 The $smtp_command and $smtp_command_argument variables were not correct
251 in the case of a MAIL command with additional options following the
252 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
253 were accidentally chopped off.
254
a14e5636
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255PH/29 SMTP synchronization checks are implemented when a command is read -
256 there is a check that no more input is waiting when there shouldn't be
257 any. However, for some commands, a delay in an ACL can mean that it is
258 some time before the response is written. In this time, more input might
259 arrive, invalidly. So now there are extra checks after an ACL has run for
260 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
261 pipelining has not been advertised.
262
ec95d1a6
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263PH/30 MH's patch to allow iscntrl() characters to be list separators.
264
42855d71
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265PH/31 Unlike :fail:, a custom message specified with :defer: was not being
266 returned in the SMTP response when smtp_return_error_details was false.
267 This has been fixed.
268
57c2c631
PH
269PH/32 Change the Dovecot authenticator to use read() and write() on the socket
270 instead of the C I/O that was originally supplied, because problems were
271 reported on Solaris.
272
58c01c94
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273PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
274 Exim which did not show up earlier: it was assuming that a call to
275 SSL_CTX_set_info_callback() might give an error value. In fact, there is
276 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
277 was a macro that became an assignment, so it seemed to work. This has
278 changed to a proper function call with a void return, hence the compile
279 error. Exim's code has been fixed.
280
dee5a20a
PH
281PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
282 cpus.
283
d2ee6114
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284PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
285
b2d5182b
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286PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
287
79749a79
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288PH/37 If a message is not accepted after it has had an id assigned (e.g.
289 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
290 "Completed" line in the log. When some messages of this type were
291 selected by exigrep, they were listed as "not completed". Others were
292 picked up by some special patterns. I have improved the selection
293 criteria to be more general.
79749a79 294
c456d9bb
PH
295PH/38 The host_find_failed option in the manualroute router can now be set
296 to "ignore", to completely ignore a host whose IP address cannot be
297 found. If all hosts are ignored, the behaviour is controlled by the new
298 host_all_ignored option.
299
cd9868ec
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300PH/39 In a list of hosts for manualroute, if one item (either because of multi-
301 homing or because of multiple MX records with /mx) generated more than
302 one IP address, and the following item turned out to be the local host,
303 all the secondary addresses of the first item were incorrectly removed
304 from the list, along with the local host and any following hosts (which
305 is what is supposed to happen).
306
ebeaf996
PH
307PH/40 When Exim receives a message, it writes the login name, uid, and gid of
308 whoever called Exim into the -H file. In the case of the daemon it was
309 behaving confusingly. When first started, it used values for whoever
310 started the daemon, but after a SIGHUP it used the Exim user (because it
311 calls itself on a restart). I have changed the code so that it now always
312 uses the Exim user.
313
2679d413
PH
314PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
315 message are rejected with the same error (e.g. no authentication or bad
316 sender address), and a DATA command is nevertheless sent (as can happen
317 with PIPELINING or a stupid MUA), the error message that was given to the
318 RCPT commands is included in the rejection of the DATA command. This is
319 intended to be helpful for MUAs that show only the final error to their
320 users.
321
84024b72
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322PH/42 Another patch from the Sieve maintainer.
323
8005d38e
SC
324SC/02 Eximstats - Differentiate between permanent and temporary rejects.
325 Eximstats - Fixed some broken HTML links and added missing column headers
326 (Jez Hancock).
327 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
328 columns for Rejects, Temp Rejects, Ham, and Spam rows.
329
3298c6c6
SC
330SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
331
a43a27c5
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332PH/43 Yet another patch from the Sieve maintainer.
333
58eb016e 334PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
335 the response to the final '.' that terminates a message, but only in the
336 case where the client has not sent further data following the '.'
337 (unfortunately, this is allowed). However, in many cases there won't be
338 any further data because there won't be any more messages to send. A call
339 to select() can be used: if it shows that the input is "ready", there is
340 either input waiting, or the socket has been closed. An attempt to read
341 the next input character can distinguish the two cases. Previously, Exim
58eb016e 342 would have sent an OK response which the client would never have see.
563b63fa
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343 This could lead to message repetition. This fix should cure that, at
344 least in a lot of common cases.
58eb016e 345
b43a74ea
PH
346PH/45 Do not advertise STARTTLS in response to HELP unless it would be
347 advertised in response to EHLO.
348
b4ed4da0 349
5dd1517f
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350Exim version 4.66
351-----------------
352
353PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
354 fixed by 4.65/MH/01 (is this a record?) are fixed:
355
356 (i) An empty string was always treated as zero by the numeric comparison
357 operators. This behaviour has been restored.
358
359 (ii) It is documented that the numeric comparison operators always treat
360 their arguments as decimal numbers. This was broken in that numbers
361 starting with 0 were being interpreted as octal.
362
363 While fixing these problems I realized that there was another issue that
364 hadn't been noticed. Values of message_size_limit (both the global option
365 and the transport option) were treated as octal if they started with 0.
366 The documentation was vague. These values are now always treated as
367 decimal, and I will make that clear in the documentation.
368
369
93cfa765
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370Exim version 4.65
371-----------------
372
373TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
374 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
375 versions. (#438)
376
d6066548
MH
377MH/01 Don't check that the operands of numeric comparison operators are
378 integers when their expansion is in "skipping" mode (fixes bug
379 introduced by 4.64-PH/07).
380
4362ff0d
PH
381PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
382 child addresses, Exim now panics and dies. Previously, because the count
383 is held in a short int, deliveries were likely to be lost. As such a
384 large number of recipients for a single message is ridiculous
385 (performance will be very, very poor), I have chosen to impose a limit
386 rather than extend the field.
387
93cfa765 388
944e9e9c
TF
389Exim version 4.64
390-----------------
aa41d2de 391
21d74bd9
TK
392TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
393 leftover -K file (the existence of which was triggered by #402).
394 While we were at it, introduced process PID as part of the -K
395 filename. This should rule out race conditions when creating
396 these files.
397
398TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
399 processing considerably. Previous code took too long for large mails,
400 triggering a timeout which in turn triggers #401.
401
402TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
403 in the DK code in transports.c. sendfile() is not really portable,
404 hence the _LINUX specificness.
944e9e9c
TF
405
406TF/01 In the add_headers option to the mail command in an Exim filter,
407 there was a bug that Exim would claim a syntax error in any
408 header after the first one which had an odd number of characters
409 in the field name.
410
2b1c6e3a
PH
411PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
412 callout verification, Exim cached a "reject" for the entire domain. This
413 is correct for most verifications, but it is not correct for a recipient
414 verification with use_sender or use_postmaster set, because in that case
415 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
416 case of MAIL FROM:<> rejection from other early rejections (e.g.
417 rejection of HELO). When verifying a recipient using a non-null MAIL
418 address, the cache is ignored if it shows MAIL FROM:<> rejection.
419 Whatever the result of the callout, the value of the domain cache is
420 left unchanged (for any other kind of callout, getting as far as trying
421 RCPT means that the domain itself is ok).
422
1f872c80
PH
423PH/02 Tidied a number of unused variable and signed/unsigned warnings that
424 gcc 4.1.1 threw up.
425
426PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
427 manifest itself as EPIPE rather than ECONNECT. When tidying away a
428 session, the daemon ignores ECONNECT errors and logs others; it now
429 ignores EPIPE as well.
430
d203e649
PH
431PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
432 (quoted-printable decoding).
433
cc2ed8f7 434PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 435 later the small subsequent patch to fix an introduced bug.
f951fd57 436
ddfcd446
PH
437PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
438
d45b1de8
PH
439PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
440
441PH/08 An error is now given if message_size_limit is specified negative.
442
38a0a95f 443PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 444 to be given (somewhat) arbitrary names.
38a0a95f 445
a2405d83
JJ
446JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
447 in 4.64-PH/09.
448
449JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
450 miscellaneous code fixes
451
6ea85e9a
PH
452PH/10 Added the log_reject_target ACL modifier to specify where to log
453 rejections.
454
26da7e20
PH
455PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
456 hostname. This is wrong, because it relates to the incoming message (and
457 probably the interface on which it is arriving) and not to the outgoing
458 callout (which could be using a different interface). This has been
459 changed to use the value of the helo_data option from the smtp transport
460 instead - this is what is used when a message is actually being sent. If
461 there is no remote transport (possible with a router that sets up host
462 addresses), $smtp_active_hostname is used.
6ea85e9a 463
14aa5a05 464PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 465 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
466 (a) The code assumed that strncpy() returns a negative number on buffer
467 overflow, which isn't the case. Replaced with Exim's string_format()
468 function.
469 (b) There were several signed/unsigned issues. I just did the minimum
470 hacking in of casts. There is scope for a larger refactoring.
471 (c) The code used strcasecmp() which is not a standard C function.
472 Replaced with Exim's strcmpic() function.
473 (d) The code set only $1; it now sets $auth1 as well.
474 (e) A simple test gave the error "authentication client didn't specify
475 service in request". It would seem that Dovecot has changed its
476 interface. Fortunately there's a specification; I followed it and
477 changed what the client sends and it appears to be working now.
478
ff75a1f7
PH
479PH/13 Added $message_headers_raw to provide the headers without RFC 2047
480 decoding.
481
e6f6568e
PH
482PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
483 address A is aliased to B and C, where B exists and C does not. Without
484 -v the output is "A verified" because verification stops after a
485 successful redirection if more than one address is generated. However,
486 with -v the child addresses are also verified. Exim was outputting "A
487 failed to verify" and then showing the successful verification for C,
488 with its parentage. It now outputs "B failed to verify", showing B's
489 parentage before showing the successful verification of C.
490
d6f6e0dc
PH
491PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
492 look up a TXT record in a specific list after matching in a combined
493 list.
494
322050c2
PH
495PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
496 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
497 they consult the DNS. I had assumed they would set it the way they
498 wanted; and indeed my experiments on Linux seem to show that in some
499 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
500 To be on the safe side, however, I have now made the interface to
501 host_find_byname() similar to host_find_bydns(), with an argument
502 containing the DNS resolver options. The host_find_byname() function now
503 sets these options at its start, just as host_find_bydns() does. The smtp
504 transport options dns_qualify_single and dns_search_parents are passed to
505 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
506 of host_find_byname() use the default settings of RES_DEFNAMES
507 (qualify_single) but not RES_DNSRCH (search_parents).
508
08955dd3
PH
509PH/17 Applied (a modified version of) Nico Erfurth's patch to make
510 spool_read_header() do less string testing, by means of a preliminary
511 switch on the second character of optional "-foo" lines. (This is
512 overdue, caused by the large number of possibilities that now exist.
513 Originally there were few.) While I was there, I also converted the
514 str(n)cmp tests so they don't re-test the leading "-" and the first
515 character, in the hope this might squeeze out yet more improvement.
516
1eccaa59
PH
517PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
518 flag allowing group syntax was set by the header_syntax check but not
519 turned off, possible causing trouble later; (2) The flag was not being
520 set at all for the header_verify test, causing "group"-style headers to
521 be rejected. I have now set it in this case, and also caused header_
522 verify to ignore an empty address taken from a group. While doing this, I
523 came across some other cases where the code for allowing group syntax
524 while scanning a header line wasn't quite right (mostly, not resetting
525 the flag correctly in the right place). These bugs could have caused
526 trouble for malformed header lines. I hope it is now all correct.
527
602e59e5
PH
528PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
529 with the "reply" argument non-NULL. The code, however (which originally
530 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
531 but it didn't always do it. This confused somebody who was copying the
532 code for some other use. I have removed all the tests.
533
411ef850
PH
534PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
535 feature that was used to support insecure browsers during the U.S. crypto
536 embargo. It requires special client support, and Exim is probably the
537 only MTA that supported it -- and would never use it because real RSA is
538 always available. This code has been removed, because it had the bad
539 effect of slowing Exim down by computing (never used) parameters for the
540 RSA_EXPORT functionality.
541
7befa435
PH
542PH/21 On the advice of Timo Sirainen, added a check to the dovecot
543 authenticator to fail if there's a tab character in the incoming data
544 (there should never be unless someone is messing about, as it's supposed
545 to be base64-encoded). Also added, on Timo's advice, the "secured" option
546 if the connection is using TLS or if the remote IP is the same as the
547 local IP, and the "valid-client-cert option" if a client certificate has
548 been verified.
549
48da4259 550PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
551 authenticators. This can be used for authorization after authentication
552 succeeds. (In the case of plaintext, it servers for both authentication
553 and authorization.)
554
48da4259
PH
555PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
556 if any retry times were supplied.
557
d1d5595c
PH
558PH/24 Exim crashed if verify=helo was activated during an incoming -bs
559 connection, where there is no client IP address to check. In this
560 situation, the verify now always succeeds.
561
0ef732d9
PH
562PH/25 Applied John Jetmore's -Mset patch.
563
328895cc
PH
564PH/26 Added -bem to be like -Mset, but loading a message from a file.
565
fd700877
PH
566PH/27 In a string expansion for a processed (not raw) header when multiple
567 headers of the same name were present, leading whitespace was being
568 removed from all of them, but trailing whitespace was being removed only
569 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
570 before concatenation. Completely empty headers in a concatenation (as
571 before) are ignored.
fd700877 572
8dce1a6f
PH
573PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
574 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
575
17af4a17
PH
576PH/29 [Removed. This was a change that I later backed out, and forgot to
577 correct the ChangeLog entry (that I had efficiently created) before
578 committing the later change.]
f6c332bd
PH
579
580PH/30 Exim was sometimes attempting to deliver messages that had suffered
581 address errors (4xx response to RCPT) over the same connection as other
582 messages routed to the same hosts. Such deliveries are always "forced",
583 so retry times are not inspected. This resulted in far too many retries
584 for the affected addresses. The effect occurred only when there were more
585 hosts than the hosts_max_try setting in the smtp transport when it had
586 the 4xx errors. Those hosts that it had tried were not added to the list
587 of hosts for which the message was waiting, so if all were tried, there
588 was no problem. Two fixes have been applied:
589
590 (i) If there are any address or message errors in an SMTP delivery, none
591 of the hosts (tried or untried) are now added to the list of hosts
592 for which the message is waiting, so the message should not be a
593 candidate for sending over the same connection that was used for a
594 successful delivery of some other message. This seems entirely
595 reasonable: after all the message is NOT "waiting for some host".
596 This is so "obvious" that I'm not sure why it wasn't done
597 previously. Hope I haven't missed anything, but it can't do any
598 harm, as the worst effect is to miss an optimization.
599
600 (ii) If, despite (i), such a delivery is accidentally attempted, the
601 routing retry time is respected, so at least it doesn't keep
602 hammering the server.
603
c1114884
PH
604PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
605 in ${readsocket because some servers need this prod.
606
7a0743eb
PH
607PH/32 Added some extra debug output when updating a wait-xxx database.
608
0d85fa3f
PH
609PH/33 The hint "could be header name not terminated by colon", which has been
610 given for certain expansion errors for a long time, was not being given
611 for the ${if def:h_colon_omitted{... case.
612
1bf43b78
PH
613PH/34 The spec says: "With one important exception, whenever a domain list is
614 being scanned, $domain contains the subject domain." There was at least
615 one case where this was not true.
616
520de300
PH
617PH/35 The error "getsockname() failed: connection reset by peer" was being
618 written to the panic log as well as the main log, but it isn't really
619 panic-worthy as it just means the connection died rather early on. I have
620 removed the panic log writing for the ECONNRESET error when getsockname()
621 fails.
622
48c7f9e2
PH
623PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
624 runs only) independently of the message's sender address. This meant
625 that, if the 4xx error was in fact related to the sender, a different
626 message to the same recipient with a different sender could confuse
627 things. In particualar, this can happen when sending to a greylisting
628 server, but other circumstances could also provoke similar problems.
629 I have changed the default so that the retry time for these errors is now
630 based a combination of the sender and recipient addresses. This change
631 can be overridden by setting address_retry_include_sender=false in the
632 smtp transport.
633
99ea1c86
PH
634PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
635 remote server are returned as part of bounce messages. This was not
636 happening for LMTP over a pipe (the lmtp transport), but now it is the
637 same for both kinds of LMTP.
638
a2042e78
PH
639PH/38 Despite being documented as not happening, Exim was rewriting addresses
640 in header lines that were in fact CNAMEs. This is no longer the case.
641
4fbcfc2e
PH
642PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
643 and queue runs started by the daemon processed all messages. This has
644 been fixed so that -R and -S can now usefully be given with -q<time>.
645
aa41d2de
PH
646PH/40 Import PCRE release 6.7 (fixes some bugs).
647
af561417
PH
648PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
649
3cc66b45
PH
650PH/42 Give an error if -q is specified more than once.
651
194cc0e4
PH
652PH/43 Renamed the variables $interface_address and $interface_port as
653 $received_ip_address and $received_port, to make it clear that these
654 values apply to message reception, and not to the outgoing interface when
655 a message is delivered. (The old names remain recognized, of course.)
656
a401ddaa
PH
657PH/44 There was no timeout on the connect() call when using a Unix domain
658 socket in the ${readsocket expansion. There now is.
659
4e88a19f
PH
660PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
661 be meaningful with "accept".
662
d7d7b289
SC
663SC/01 Eximstats V1.43
664 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
665
666SC/02 Eximstats V1.44
667 Use a glob alias rather than an array ref in the generated
668 parser. This improves both readability and performance.
669
670SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
671 Collect SpamAssassin and rejection statistics.
672 Don't display local sender or destination tables unless
673 there is data to show.
674 Added average volumes into the top table text output.
675
676SC/04 Eximstats V1.46
677 Collect data on the number of addresses (recipients)
678 as well as the number of messages.
679
680SC/05 Eximstats V1.47
681 Added 'Message too big' to the list of mail rejection
682 reasons (thanks to Marco Gaiarin).
683
684SC/06 Eximstats V1.48
685 Mainlog lines which have GMT offsets and are too short to
686 have a flag are now skipped.
687
688SC/07 Eximstats V1.49 (Alain Williams)
689 Added the -emptyok flag.
690
691SC/08 Eximstats V1.50
692 Fixes for obtaining the IP address from reject messages.
693
0ea2a468
JJ
694JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
695 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
696 whitesspace changes from 4.64-PH/27
697
698JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
699 match 4.64-PH/13
700
701JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
702 are found, allow negative numbers in numeric criteria)
703
704JJ/06 exipick.20061117.2, added new $message_body_missing variable
705
706JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
707 to match changes made in 4.64-PH/43
708
8a10f5a4
PH
709PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
710
30e18802
PH
711PH/47 Put in an explicit test for a DNS lookup of an address record where the
712 "domain" is actually an IP address, and force a failure. This locks out
713 those revolvers/nameservers that support "A-for-A" lookups, in
714 contravention of the specifications.
715
55728a4f
PH
716PH/48 When a host name was looked up from an IP address, and the subsequent
717 forward lookup of the name timed out, the host name was left in
718 $sender_host_name, contrary to the specification.
d7d7b289 719
d7837193
PH
720PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
721 restricted to single-key lookups, Exim was not diagnosing an error if
722 * or *@ was used with a query-style lookup.
723
87054a31
PH
724PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
725
ea2c01d2
MH
726MH/01 local_scan ABI version incremented to 1.1. It should have been updated
727 long ago, but noone interested enough thought of it. Let's just say that
728 the "1.1" means that there are some new functions that weren't there at
729 some point in the past.
730
e4fa6968
PH
731PH/51 Error processing for expansion failure of helo_data from an smtp
732 transport during callout processing was broken.
733
56f5d9bd
PH
734PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
735 tested/used via the -bh/-bhc/-bs options.
736
922e1c28
PH
737PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
738 bug, fixed in subsequent PCRE releases).
739
21eb6e72
PH
740PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
741 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
742
a0540757
PH
743PH/55 Check for a ridiculously long file name in exim_dbmbuild.
744
944e9e9c 745
478be7b0
SC
746Exim version 4.63
747-----------------
748
749SC/01 Use a glob alias rather than an array ref in eximstats generated
750 parser. This improves both readability and performance.
751
752SC/02 Collect SpamAssassin and rejection statistics in eximstats.
753 Don't display local sender or destination tables in eximstats unless
754 there is data to show.
755 Added average volumes into the eximstats top table text output.
756
757SC/03 Collect data on the number of addresses (recipients) as well
758 as the number of messages in eximstats.
759
2b965a65
TF
760TF/01 Correct an error in the documentation for the redirect router. Exim
761 does (usually) call initgroups() when daemonizing.
478be7b0 762
45b91596
PH
763TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
764 with consistent privilege compared to when running as a daemon.
478be7b0 765
c59f5781
TF
766TF/03 Note in the spec that $authenticated_id is not set for local
767 submissions from trusted users.
768
90fc3069
TF
769TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
770 Thanks to Dean Brooks <dean@iglou.com> for the patch.
771
6083aca0
TF
772TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
773 by adding some example configuration directives to the default
774 configuration file. A little bit of work is required to uncomment the
775 directives and define how usernames and passwords are checked, but
776 there is now a framework to start from.
777
765b530f
PH
778PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
779 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
780 without this. I don't know how relevant this is to other LDAP libraries.
781
4e167a8c
PH
782PH/02 Add the verb name to the "unknown ACL verb" error.
783
4608d683
PH
784PH/03 Magnus Holmgren's patch for filter_prepend_home.
785
b8dc3e4a
PH
786PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
787
5418e93b
PH
788PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
789 directory not expanded when it should be if an expanded home directory
790 was set for the address (which is overridden by the transport).
791
b4a9bda2
PH
792PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
793 libradius.
794
45b91596
PH
795PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
796 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
797 because it is too late at that time, and has no effect.
798
5547e2c5
PH
799PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
800 security issue with \' (bugzilla #107). I could not use the
801 PQescapeStringConn() function, because it needs a PGconn value as one of
802 its arguments.
803
dbcef0ea
PH
804PH/08 When testing addresses using -bt, indicate those final addresses that
805 are duplicates that would not cause an additional delivery. At least one
806 person was confused, thinking that -bt output corresponded to deliveries.
807 (Suppressing duplicates isn't a good idea as you lose the information
808 about possibly different redirections that led to the duplicates.)
809
25257489
PH
810PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
811 systems where poll() doesn't work, in particular OS X.
812
c816d124
PH
813PH/10 Added more information to debugging output for retry time not reached.
814
a9ccd69a
PH
815PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
816 operations in malware.c.
817
75fa1910
PH
818PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
819 signatures.
820
a7d7aa58
PH
821PH/13 If write_rejectlog was set false when logging was sent to syslog with
822 syslog_duplication set false, log lines that would normally be written
823 both the the main log and to the reject log were not written to syslog at
824 all.
825
42119b09
PH
826PH/14 In the default configuration, change the use of "message" in ACL warn
827 statements to "add_header".
828
41609df5
PH
829PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
830 not followed by a command (e.g. "seen endif").
831
a5bd321b
PH
832PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
833 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
834 latter.
835
e85a7ad5 836PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
837 so that it is now:
838
e85a7ad5
PH
839 ${if or { \
840 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
841 { match{$h_precedence:}{(?i)bulk|list|junk} } \
842 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
843 }{no}{yes}}
844
e85a7ad5
PH
845 The Auto-Submitted: and various List- headers are standardised, whereas I
846 don't think Precedence: ever was.
5dff5817 847
d8fe1c03
PH
848PH/18 Refactored debugging code in route_finduser() to show more information,
849 in particular, the error code if getpwnam() issues one.
850
16282d2b
PH
851PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
852 This is apparently needed in addition to the PH/07 change above to avoid
853 any possible encoding problems.
854
35d40a98
PH
855PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
856 but not after initializing Perl.
857
034d99ab
PH
858PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
859 output them only if debugging. By default they are written stderr,
860 apparently, which is not desirable.
861
6ec97b1b
PH
862PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
863 queries.
864
e22ca4ac
JJ
865JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
866 --not options
867
868JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
869
33d73e3b
PH
870PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
871 authenticated or an ident call has been made. Suppress the default
872 values for $authenticated_id and $authenticated_sender (but permit -oMai
873 and -oMas) when testing with -bh.
874
9ecb03f3
PH
875PH/24 Re-jigged the order of the tests in the default configuration so that the
876 tests for valid domains and recipients precede the DNS black list and CSA
877 tests, on the grounds that those ones are more expensive.
878
084efe8d
PH
879PH/25 Exim was not testing for a space following SMTP commands such as EHLO
880 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
881 This bug exists in every version of Exim that I still have, right back to
882 0.12.
883
366fc9f0
PH
884PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
885 However, an attempt to turn on case-sensitivity in a regex key by
886 including (?-i) didn't work because the subject string was already
887 lowercased, and the effects were non-intuitive. It turns out that a
888 one-line patch can be used to allow (?-i) to work as expected.
889
c59f5781 890
c887c79e
TF
891Exim version 4.62
892-----------------
893
894TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
895 other effects) broke the use of negated acl sub-conditions.
896
1cce3af8
PH
897PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
898 patch).
899
afb3eaaf
PH
900PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
901 "Deny" causes Exim to reject the incoming connection with a 554 error.
902 Unfortunately, if there is a major crisis, such as a disk failure,
903 tcp-wrappers gives "deny", whereas what one would like would be some
904 kind of temporary error. A kludge has been added to help with this.
905 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
906 554 error is used if errno is still zero or contains ENOENT (which occurs
907 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
908 451 error is used.
909
e173618b
PH
910PH/03 Add -lutil to the default FreeBSD LIBS setting.
911
dd16e114
PH
912PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
913 errors. Otherwise a message that provokes a temporary error (when other
914 messages do not) can cause a whole host to time out.
915
f7fd3850
PH
916PH/05 Batch deliveries by appendfile and pipe transports did not work when the
917 addresses were routed directly to files or pipes from a redirect router.
918 File deliveries just didn't batch; pipe deliveries might have suffered
919 odd errors.
920
d87df92c
PH
921PH/06 A failure to get a lock for a hints database would erroneously always say
922 "Failed to get write lock", even when it was really a read lock.
923
7e9f683d
PH
924PH/07 The appendfile transport was creating MBX lock files with a fixed mode
925 of 0600. This has been changed to use the value of the lockfile_mode
926 option (which defaults to 0600).
927
bfad5236
PH
928PH/08 Applied small patch from the Sieve maintainer.
929
01c490df
PH
930PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
931 folder from quota calculations, a direct delivery into this folder messed
932 up the contents of the maildirsize file. This was because the regex was
933 used only to exclude .Trash (or whatever) when the size of the mailbox
934 was calculated. There was no check that a delivery was happening into an
935 excluded directory. This bug has been fixed by ignoring all quota
936 processing for deliveries into excluded directories.
937
d6629cdc
PH
938PH/10 Added the maildirfolder_create_regex option to appendfile.
939
1cce3af8 940
214e2000
PH
941Exim version 4.61
942-----------------
943
944PH/01 The code for finding all the local interface addresses on a FreeBSD
945 system running IPv6 was broken. This may well have applied to all BSD
946 systems, as well as to others that have similar system calls. The broken
947 code found IPv4 interfaces correctly, but gave incorrect values for the
948 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
949 that it would not match correctly against @[] and not recognize the IPv6
950 addresses as local.
951
f9daeae0
PH
952PH/02 The ipliteral router was not recognizing addresses of the form user@
953 [ipv6:....] because it didn't know about the "ipv6:" prefix.
954
7e66e54d
PH
955PH/03 Added disable_ipv6.
956
c8ea1597
PH
957PH/04 Changed $reply_address to use the raw form of the headers instead of the
958 decoded form, because it is most often used to construct To: headers
959 lines in autoreplies, and the decoded form may well be syntactically
960 invalid. However, $reply_address has leading white space removed, and all
961 newlines turned into spaces so that the autoreply transport does not
962 grumble.
963
911f6fde
PH
964PH/05 If group was specified without a user on a router, and no group or user
965 was specified on a transport, the group from the router was ignored.
966
47ca6d6c
PH
967PH/06 Increased the number of ACL variables to 20 of each type, and arranged
968 for visible compile-time settings that can be used to change these
969 numbers, for those that want even more. Backwards compatibility with old
970 spool files has been maintained. However, going back to a previous Exim
971 release will lost any variables that are in spool files.
972
ed0e9820
PH
973PH/07 Two small changes when running in the test harness: increase delay when
974 passing a TCP/IP connection to a new process, in case the original
975 process has to generate a bounce, and remove special handling of
976 127.0.0.2 (sic), which is no longer necessary.
977
eff37e47
PH
978PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
979 be the same on different OS.
980
1921d2ea
PH
981PH/09 Moved a debug statement in filter processing to avoid a race problem when
982 testing.
983
b3f69ca8
JJ
984JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
985 whether --show-vars was specified or not
986
987JJ/02 exipick: Added support for new ACL variable spool format introduced
988 in 4.61-PH/06
989
424a1c63
PH
990PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
991 syntactically invalid From: or Reply-to: line, and a filter used this to
992 generate an autoreply, and therefore failed to obtain an address for the
993 autoreply, Exim could try to deliver to a non-existent relative file
994 name, causing unrelated and misleading errors. What now happens is that
995 it logs this as a hard delivery error, but does not attempt to create a
996 bounce message.
997
7a100415
PH
998PH/11 The exinext utility has a -C option for testing purposes, but although
999 the given file was scanned by exinext itself; it wasn't being passed on
1000 when Exim was called.
1001
19b9dc85
PH
1002PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
1003 an end-of-file indication when reading a command response.
1004
309bd837
PH
1005PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
1006 compiled. In many other places in Exim, IPv6 addresses are always
1007 recognized, so I have changed this. It also means that IPv4 domain
1008 literals of the form [IPV4:n.n.n.n] are now always recognized.
1009
59e82a2a
PH
1010PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
1011 used if the router is not running as root, for example, when verifying at
1012 ACL time, or when using -bh. The debugging output from this situation was
1013 non-existent - all you got was a failure to exec. I have made two
1014 changes:
1015
1016 (a) Failures to set uid/gid, the current directory, or a process leader
1017 in a subprocess such as that created by queryprogram now generate
1018 suitable debugging ouput when -d is set.
1019
1020 (b) The queryprogram router detects when it is not running as root,
1021 outputs suitable debugging information if -d is set, and then runs
1022 the subprocess without attempting to change uid/gid.
1023
9edc04ce
PH
1024PH/15 Minor change to Makefile for building test_host (undocumented testing
1025 feature).
1026
1349e1e5
PH
1027PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1028 additional section of a DNS packet that returns MX or SRV records.
1029 Instead, it always explicitly searches for A/AAAA records. This avoids
1030 major problems that occur when a DNS server includes only records of one
1031 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1032 fixed another bug: if SRV records were looked up and the corresponding
1033 address records were *not* found in the additional section, the port
1034 values from the SRV records were lost.
1035
ea49d0e1
PH
1036PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1037 using the correct key (the original address) when searching the retry
1038 rules in order to find which one to use for generating the retry hint.
1039
064a94c9
PH
1040PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1041 adding the default one. Similarly, if it contains a Reply-To: header, the
1042 errors_reply_to option, if set, is not used.
1043
727071f8
PH
1044PH/19 When calculating a retry time, Exim used to measure the "time since
1045 failure" by looking at the "first failed" field in the retry record. Now
1046 it does not use this if it is later than than the arrival time of the
1047 message. Instead it uses the arrival time. This makes for better
1048 behaviour in cases where some deliveries succeed, thus re-setting the
1049 "first failed" field. An example is a quota failure for a huge message
1050 when small messages continue to be delivered. Without this change, the
1051 "time since failure" will always be short, possible causing more frequent
1052 delivery attempts for the huge message than are intended.
dd16e114 1053 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1054
f78eb7c6
PH
1055PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1056 $1, $2, $3) because the numerical variables can be reset during some
1057 expansion items (e.g. "match"), thereby losing the authentication data.
1058
21c28500
PH
1059PH/21 Make -bV show the size of off_t variables so that the test suite can
1060 decide whether to run tests for quotas > 2G.
1061
1062PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1063 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1064 filecount value is greater than 2G or if a quota value is greater than 2G
1065 on a system where the size of off_t is not greater than 4, a panic error
1066 is given.
1067
1688f43b
PH
1068PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1069 never match. The debug and -bh output now contains an explicit error
1070 message indicating a malformed IPv4 address or mask.
1071
1072PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1073 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1074 PH/23 above applies.
1075
9675b384
PH
1076PH/25 Do not write to syslog when running in the test harness. The only
1077 occasion when this arises is a failure to open the main or panic logs
1078 (for which there is an explicit test).
1079
6a3f1455
PH
1080PH/26 Added the /no_tell option to "control=freeze".
1081
dac79d3e
PH
1082PH/27 If a host name lookup failed very early in a connection, for example, if
1083 the IP address matched host_lookup and the reverse lookup yielded a name
1084 that did not have a forward lookup, an error message of the form "no IP
1085 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1086 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1087
5977a0b3
PH
1088PH/28 An enabling patch from MH: add new function child_open_exim2() which
1089 allows the sender and the authenticated sender to be set when
1090 submitting a message from within Exim. Since child_open_exim() is
1091 documented for local_scan(), the new function should be too.
1092
c91535f3
PH
1093PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1094 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1095 results in an empty string is now treated as unset.
1096
0d46a8c8
PH
1097PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1098
278c6e6c
PH
1099PH/31 Added sender_verify_fail logging option.
1100
2cbb4081
PH
1101PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1102 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1103 tidied the source and removed it altogether.
1104
3eef829e
PH
1105PH/33 When a queue run was abandoned because the load average was too high, a
1106 log line was always written; now it is written only if the queue_run log
1107 selector is set. In addition, the log line for abandonment now contains
1108 information about the queue run such as the pid. This is always present
1109 in "start" and "stop" lines but was omitted from the "abandon" line.
1110
1ab95fa6
PH
1111PH/34 Omit spaces between a header name and the colon in the error message that
1112 is given when verify = headers_syntax fails (if there are lots of them,
1113 the message gets confusing).
1114
230205fc
PH
1115PH/35 Change the default for dns_check_names_pattern to allow slashes within
1116 names, as there are now some PTR records that contain slashes. This check
1117 is only to protect against broken name servers that fall over on strange
1118 characters, so the fact that it applies to all lookups doesn't matter.
1119
75e0e026
PH
1120PH/36 Now that the new test suite is complete, we can remove some of the
1121 special code in Exim that was needed for the old test suite. For example,
1122 sorting DNS records because real resolvers return them in an arbitrary
1123 order. The new test suite's fake resolver always returns records in the
1124 same order.
1125
1126PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1127 bounces) except when queue_only is set, to avoid logging races between
1128 the different processes.
1129
145396a6
PH
1130PH/38 Panic-die if .include specifies a non-absolute path.
1131
3cd34f13
PH
1132PH/39 A tweak to the "H" retry rule from its user.
1133
11121d3d
JJ
1134JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1135 a label. They prevented compilation on older perls.
1136
1137JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1138 a warning to be raised on newish perls.
1139
1140JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1141 on queue. Changes to match documented behaviour of showing count of
1142 messages matching specified criteria.
1143
8def5aaf
PH
1144PH/40 Changed the default ident timeout from 30s to 5s.
1145
929ba01c
PH
1146PH/41 Added support for the use of login_cap features, on those BSD systems
1147 that have them, for controlling the resources used by pipe deliveries.
1148
2632889e
PH
1149PH/42 The content-scanning code uses fopen() to create files in which to put
1150 message data. Previously it was not paying any attention to the mode of
1151 the files. Exim runs with umask(0) because the rest of the code creates
1152 files with open(), and sets the required mode explicitly. Thus, these
1153 files were ending up world-writeable. This was not a big issue, because,
1154 being within the spool directory, they were not world-accessible. I have
1155 created a function called modefopen, which takes an additional mode
1156 argument. It sets umask(777), creates the file, chmods it to the required
1157 mode, then resets the umask. All the relevant calls to fopen() in the
1158 content scanning code have been changed to use this function.
1159
944a9c55
PH
1160PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1161 to 24 hours. This avoids potential overflow problems when processing G
1162 and H retry rules. I suspect nobody ever tinkers with this value.
1163
4a23603b
PH
1164PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1165
4730f942
PH
1166PH/45 When the plaintext authenticator is running as a client, the server's
1167 challenges are checked to ensure they are valid base64 strings. By
1168 default, the authentication attempt is cancelled if an invalid string is
1169 received. Setting client_ignore_invalid_base64 true ignores these errors.
1170 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1171 they are received. Thus, the responses can be made to depend on the
1172 challenges. If an invalid string is ignored, an empty string is placed in
1173 the variable.
1174
30dba1e6
PH
1175PH/46 Messages that are created by the autoreply transport now contains a
1176 References: header, in accordance with RFCs 2822 and 3834.
1177
382afc6b
PH
1178PH/47 Added authenticated_sender_force to the smtp transport.
1179
a86229cf
PH
1180PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1181
50c99ba6
PH
1182PH/49 Installed latest patch from the Sieve maintainer.
1183
d35e429d
PH
1184PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1185 was also set, the appendfile transport was unnecessarily scanning a
1186 directory of message files (e.g. for maildir delivery) to find the count
1187 of files (along with the size), even though it did not need this
1188 information. It now does the scan only if it needs to find either the
1189 size of the count of files.
1190
f90d018c
PH
1191PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1192
75def545
PH
1193PH/52 Two bugs concerned with error handling when the smtp transport is
1194 used in LMTP mode:
1195
1196 (i) Exim was not creating retry information for temporary errors given
1197 for individual recipients after the DATA command when the smtp transport
1198 was used in LMTP mode. This meant that they could be retried too
1199 frequently, and not timed out correctly.
1200
1201 (ii) Exim was setting the flag that allows error details to be returned
1202 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1203 recipients that were returned after the DATA command.
1204
1205PH/53 This is related to PH/52, but is more general: for any failing address,
1206 when detailed error information was permitted to be returned to the
1207 sender, but the error was temporary, then after the final timeout, only
1208 "retry timeout exceeded" was returned. Now it returns the full error as
1209 well as "retry timeout exceeded".
1210
c46782ef
PH
1211PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1212 do this, and (what is worse) MTAs that accept it.
1213
71fafd95
PH
1214PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1215 will now be deprecated.
1216
2c5db4fd
PH
1217PH/56 New os.c-cygwin from the Cygwin maintainer.
1218
9cf6b11a
JJ
1219JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1220 formats (previously only available in exim formats via -bpr, -bpru,
1221 and -bpra. Now also available in native and exiqgrep formats)
1222
1223JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1224 with very large, slow to parse queues
1225
1226JJ/08 exipick: added ! as generic prefix to negate any criteria format
1227
1228JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1229
898d150f
PH
1230PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1231 responses to authentication challenges, though it was showing the
1232 challenges; (ii) I've removed the CR characters from the debug output for
1233 SMTP output lines.
1234
46218253
PH
1235PH/58 Allow for the insertion of a newline as well as a space when a string
1236 is turned into more than one encoded-word during RFC 2047 encoding. The
1237 Sieve code now uses this.
1238
e97957bc
PH
1239PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1240 data_4xx, lost_connection, tls_required.
1241
81e509d7
PH
1242PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1243 message was being sent as an SMTP response.
1244
3d240ff7
PH
1245PH/61 Add -l and -k options to exicyclog.
1246
b37c4101
PH
1247PH/62 When verifying, if an address was redirected to one new address, so that
1248 verification continued, and the new address failed or deferred after
1249 having set something in $address_data, the value of $address_data was not
1250 passed back to the ACL. This was different to the case when no
1251 redirection occurred. The value is now passed back in both cases.
1252
79378e0f
PH
1253PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1254 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1255 use login_cap.h, so on its own it isn't the distinguishing feature. The
1256 new name refers directly to the setclassresources() function.
1257
e49c7bb4
PH
1258PH/65 Added configuration files for NetBSD3.
1259
d114ec46
PH
1260PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1261
f3d7df6c
PH
1262PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1263 is preferred over IPv4.
1264
715ab376
PH
1265PH/68 The bounce_return_message and bounce_return_body options were not being
1266 honoured for bounces generated during the reception of non-SMTP messages.
1267 In particular, this applied to messages rejected by the ACL. This bug has
1268 been fixed. However, if bounce_return_message is true and bounce_return_
1269 body is false, the headers that are returned for a non-SMTP message
1270 include only those that have been read before the error was detected.
1271 (In the case of an ACL rejection, they have all been read.)
1272
6b31b150
PH
1273PH/69 The HTML version of the specification is now built in a directory called
1274 spec_html instead of spec.html, because the latter looks like a path with
1275 a MIME-type, and this confuses some software.
1276
1277PH/70 Catch two compiler warnings in sieve.c.
1278
d515a917
PH
1279PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1280 function verify_get_ident() calls ip_connect() to connect a socket, but
1281 if the "connect()" function timed out, ip_connect() used to close the
1282 socket. However, verify_get_ident() also closes the socket later, and in
1283 between Exim writes to the log, which may get opened at this point. When
1284 the socket was closed in ip_connect(), the log could get the same file
1285 descriptor number as the socket. This naturally causes chaos. The fix is
1286 not to close the socket in ip_connect(); the socket should be closed by
1287 the function that creates it. There was only one place in the code where
1288 this was missing, in the iplookup router, which I don't think anybody now
1289 uses, but I've fixed it anyway.
1290
9b8fadde
PH
1291PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1292 well as to direct DNS lookups. Otherwise the handling of names in host
1293 lists is inconsistent and therefore confusing.
1294
214e2000 1295
5de37277
PH
1296Exim version 4.60
1297-----------------
1298
cc38ddbf
PH
1299PH/01 Two changes to the default runtime configuration:
1300
1301 (1) Move the checks for relay_from_hosts and authenticated clients from
1302 after to before the (commented out) DNS black list checks.
1303
1304 (2) Add control=submission to the relay_from_hosts and authenticated
1305 clients checks, on the grounds that messages accepted by these
1306 statements are most likely to be submissions.
5de37277 1307
72fdd6ae
PH
1308PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1309
1310 (1) Generate an error if the third argument for the ${prvs expansion is
1311 not a single digit.
1312
1313 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1314 string.
1315
1316 (3) Reset the variables that are obtained from the first argument of
1317 ${prvscheck and used in the second argument before leaving the code,
1318 because their memory is reclaimed, so using them afterwards may do
1319 silly things.
1320
1321 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1322 one (it's much easier than Tom thought :-).
1323
1324 (5) Because of (4), we can now allow for the use of $prvscheck_result
1325 inside the third argument.
cb9328de 1326
cb741023
PH
1327PH/03 For some reason, the default setting of PATH when running a command from
1328 a pipe transport was just "/usr/bin". I have changed it to
1329 "/bin:/usr/bin".
1330
f174f16e
PH
1331PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1332 anything to be listed in the output from -bV.
b2f5a032 1333
c25242d7
PH
1334PH/05 When a filter generated an autoreply, the entire To: header line was
1335 quoted in the delivery log line, like this:
1336
1337 => >A.N.Other <ano@some.domain> <original@ddress> ...
1338
1339 This has been changed so that it extracts the operative address. There
1340 may be more than one such address. If so, they are comma-separated, like
1341 this:
1342
1343 => >ano@some.domain,ona@other.domain <original@ddress> ...
1344
82c19f95
PH
1345PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1346 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1347 not being looked up in the rDNS to get a host name, Exim was showing the
1348 IP address twice in Received: lines, even though the IP addresses were
1349 identical. For example:
1350
1351 Received: from [1.2.3.4] (helo=[1.2.3.4])
1352
1353 However, if the real host name was known, it was omitting the HELO data
1354 if it matched the actual IP address. This has been tidied up so that it
1355 doesn't show the same IP address twice.
1356
d7ffbc12
PH
1357PH/07 When both +timestamp and +memory debugging was on, the value given by
1358 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1359 called by the debug printing, thereby overwriting the timestamp buffer.
1360 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1361
9f526266
PH
1362PH/08 When the original message was included in an autoreply transport, it
1363 always said "this is a copy of the message, including all the headers",
1364 even if body_only or headers_only was set. It now gives an appropriate
1365 message.
1366
87fcc8b9
PH
1367PH/09 Applied a patch from the Sieve maintainer which:
1368
1369 o fixes some comments
1370 o adds the (disabled) notify extension core
1371 o adds some debug output for the result of if/elsif tests
1372 o points to the current vacation draft in the documentation
1373 and documents the missing references header update
1374
1375 and most important:
1376
1377 o fixes a bug in processing the envelope test (when testing
1378 multiple envelope elements, the last element determinted the
1379 result)
1380
456682f5
PH
1381PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1382 Electronic Mail") by including:
1383
1384 Auto-submitted: auto-generated
1385
1386 in the messages that it generates (bounce messages and others, such as
1387 warnings). In the case of bounce messages for non-SMTP mesages, there was
1388 also a typo: it was using "Auto_submitted" (underscore instead of
1389 hyphen). Since every message generated by Exim is necessarily in response
1390 to another message, thes have all been changed to:
1391
1392 Auto-Submitted: auto-replied
1393
1394 in accordance with these statements in the RFC:
1395
1396 The auto-replied keyword:
1397
1398 - SHOULD be used on messages sent in direct response to another
1399 message by an automatic process,
1400
1401 - MUST NOT be used on manually-generated messages,
1402
1403 - MAY be used on Delivery Status Notifications (DSNs) and Message
1404 Disposition Notifications (MDNs),
1405
1406 - MUST NOT be used on messages generated by automatic or periodic
1407 processes, except for messages which are automatic responses to
1408 other messages.
1409
3e46c1aa
PH
1410PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1411 to the default Received: header definition.
456682f5 1412
49826d12
PH
1413PH/12 Added log selector acl_warn_skipped (default on).
1414
eba0c039
PH
1415PH/13 After a successful wildlsearch lookup, discard the values of numeric
1416 variables because (a) they are in the wrong storage pool and (b) even if
1417 they were copied, it wouldn't work properly because of the caching.
1418
a0d6ba8a
PH
1419PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1420 checking when decoding. Apparently there are clients that generate
1421 overlong encoded strings. Why am I not surprised?
1422
f0917727
PH
1423PH/15 If the first argument of "${if match_address" was not empty, but did not
1424 contain an "@" character, Exim crashed. Now it writes a panic log message
1425 and treats the condition as false.
1426
096fee00
PH
1427PH/16 In autoreply, treat an empty string for "once" the same as unset.
1428
024bd3c2
PH
1429PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1430 extension "envelope-auth". The code is finished and in agreement with
1431 other implementations, but there is no documentation so far and in fact,
1432 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1433 not changing the active code.
1434
1435 Print executed "if" and "elsif" statements when debugging is used. This
1436 helps a great deal to understand what a filter does.
1437
1438 Document more things not specified clearly in RFC3028. I had all this
1439 sorted out, when out of a sudden new issues came to my mind. Oops."
1440
df199fec
PH
1441PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1442 (Bugzilla #53).
1443
d27f1df3
PH
1444PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1445 canonical form (as documented). However, after a host name lookup from
1446 the IP address, check_host() was doing a simple string comparison with
1447 addresses acquired from the DNS when checking that the found name did
1448 have the original IP as one of its addresses. Since any found IPv6
1449 addresses are likely to be in abbreviated form, the comparison could
1450 fail. Luckily, there already exists a function for doing the comparison
1451 by converting both addresses to binary, so now that is used instead of
1452 the text comparison.
1453
96776534
PH
1454PH/20 There was another similar case to PH/19, when a complete host name was
1455 given in a host list; looking up its IP address could give an abbreviated
1456 form, whereas the current host's name might or might not be abbreviated.
1457 The same fix has been applied.
1458
5de37277 1459
9a799bc0
PH
1460Exim version 4.54
1461-----------------
1462
1463PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1464 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1465 It now does.
1466
99a4b039
PH
1467PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1468 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1469
1470PH/03 Typo: missing ".o" in src/pcre/Makefile.
1471
4b233853
PH
1472PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1473 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1474 Also, for "Auto-Submitted", treat anything other than "no" as
1475 non-personal, in accordance with RFC 3834. (Previously it treated
1476 anything starting "auto-" as non-personal.)
1477
8857ccfd
PH
1478TF/01 The control=submission/name=... option had a problem with syntax
1479 errors if the name included a slash character. The /name= option
1480 now slurps the rest of the string, so it can include any characters
1481 but it must come last in the list of options (after /sender_retain
1482 or /domain=).
1483
433a2980
PH
1484PH/05 Some modifications to the interface to the fake nameserver for the new
1485 testing suite.
1486
3e46c1aa 1487
9a799bc0 1488
e3a311ba
TK
1489Exim version 4.53
1490-----------------
1491
1492TK/01 Added the "success_on_redirect" address verification option. See
1493 NewStuff for rationale and an example.
1494
13b685f9
PH
1495PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1496
395ff96d
PH
1497PH/02 Patch to exigrep to allow it to work on syslog lines.
1498
5b68f6e4
PH
1499PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1500 fread() to skip over the body file's header line, because in Cygwin the
1501 header line is locked and is inaccessible.
1502
1ab52c69
PH
1503PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1504 co-exist for some time) to make it clear that it is the Exim ID that is
1505 referenced, not the Message-ID: header line.
1506
b07e6aa3
PH
1507PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1508 string_format() function, because snprintf() does not exist on all
1509 operating systems.
1510
254e032f
PH
1511PH/06 The use of forbid_filter_existstest now also locks out the use of the
1512 ${stat: expansion item.
1513
3af76a81
PH
1514PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1515 protocol synchronization error", to keep the pedants happy.
1516
2548ba04
PH
1517PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1518 well as for IRIX systems, when gcc is being used. See the host.c source
1519 file for comments.
1520
b6c6011d
PH
1521PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1522
cf39cf57
PH
1523PH/10 Named domain lists were not working if used in a queue_smtp_domains
1524 setting.
1525
f1513293
PH
1526PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1527 transport and to the smtp transport in LMTP mode.
1528
727549a4
PH
1529TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1530
af46795e
PH
1531PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1532 run a filter in a subprocess. This could lead to confusion in subsequent
1533 lookups in the parent process. There should also be a search_tidyup() at
1534 the end of the subprocess.
1535
d7b47fd0
PH
1536PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1537 only if the host matched helo_try_verify_hosts, which caused the
1538 verification to occur when the EHLO/HELO command was issued. The ACL just
1539 tested the remembered result. Now, if a previous verification attempt has
1540 not happened, "verify = helo" does it there and then.
1541
ee744174
JJ
1542JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1543
b582ab87
PH
1544TK/03 Fix log output including CR from clamd.
1545
41a13e0a
PH
1546PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1547 exist provoked a memory error which could cause a segfault.
1548
f625cc5a
PH
1549PH/15 Installed PCRE 6.2
1550
1551PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1552
21f7af35
PH
1553PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1554 of the problem. Specifically, suggested +O2 rather than +O1 for the
1555 HP-UX compiler.
1556
31480e42
PH
1557PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1558
2d280592
PH
1559PH/20 If a delivery was routed to a non-standard port by means of an SRV
1560 record, the port was not correctly logged when the outgoing_port log
1561 selector was set (it logged the transort's default port).
1562
7cd1141b
PH
1563PH/21 Added support for host-specific ports to manualroute, queryprogram,
1564 fallback_hosts, and "hosts" in the smtp transport.
1565
1566PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1567 host errors such as "Connection refused".
1568
750af86e
PH
1569PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1570 authentication with radiusclient 0.4.9:
1571
1572 - Error returned from rc_read_config was caught wrongly
1573 - Username/password not passed on to radius server due to wrong length.
1574
1575 The presumption is that some radiusclient API changes for 4.51/PH/17
1576 were not taken care of correctly. The code is still untested by me (my
1577 Linux distribution still has 0.3.2 of radiusclient), but it was
1578 contributed by a Radius user.
1579
1580PH/24 When doing a callout, the value of $domain wasn't set correctly when
1581 expanding the "port" option of the smtp transport.
1582
4304270b
TK
1583TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1584 while reading a MIME header. Thanks to Tom Hughes for a patch.
1585
750af86e
PH
1586PH/24 Include config.h inside local_scan.h so that configuration settings are
1587 available.
1588
64ffc24f
PH
1589PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1590 that in an ACL for RCPT (for example), you can examine exactly what was
1591 received.
1592
5dd9625b
PH
1593PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1594 commands, but it was not correctly comparing the address with the actual
1595 client host address. Thus, it would show the EHLO address in Received:
1596 header lines when this was not necessary.
1597
5591031b
PH
1598PH/27 Added the % operator to ${eval:}.
1599
ba18e66a
PH
1600PH/28 Exim tries to create and chdir to its spool directory when it starts;
1601 it should be ignoring failures (because with -C, for example, it has lost
1602 privilege). It wasn't ignoring creation failures other than "already
1603 exists".
1604
9cec981f
PH
1605PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1606 -bV or -d is used.
1607
aa2b5c79
PH
1608PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1609 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1610 too many continuations, the temporary file was not being removed, and the
1611 return code was incorrect.
aa2b5c79 1612
48a53b7f
PH
1613PH/31 Missing "BOOL" in function definition in filtertest.c.
1614
1c59d63b
PH
1615PH/32 Applied Sieve patches from the maintainer.
1616
671012da
TK
1617TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1618
1509d3a8
PH
1619PH/33 Added "verify = not_blind".
1620
1621PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1622 Local/Makefile (with some defaults set). These are used in built scripts
1623 such as exicyclog, but they have never been used in the exim_install
1624 script (though there are many overriding facilities there). I have
1625 arranged that the exim_install script now takes note of these two
1626 settings.
1627
1628PH/35 Installed configuration files for Dragonfly.
1629
2fe1a124
PH
1630PH/36 When a locally submitted message by a trusted user did not contain a
1631 From: header, and the sender address was obtained from -f or from an SMTP
1632 MAIL command, and the trusted user did not use -F to supply a sender
1633 name, $originator_name was incorrectly used when constructing a From:
1634 header. Furthermore, $originator_name was used for submission mode
1635 messages from external hosts without From: headers in a similar way,
1636 which is clearly wrong.
1637
8800895a
PH
1638PH/37 Added control=suppress_local_fixups.
1639
ccfdb010
PH
1640PH/38 When log_selector = +received_sender was set, and the addition of the
1641 sender made the log line's construction buffer exactly full, or one byte
1642 less than full, an overflow happened when the terminating "\n" was
1643 subsequently added.
1644
1130bfb0
PH
1645PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1646 when the result of a list match is failure because a DNS lookup failed.
1647
ebcb507f
PH
1648PH/40 RM_COMMAND is now used in the building process.
1649
c35e155c
PH
1650PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1651 the "build-* directories that it finds.
1652
95d1f782
PH
1653PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1654 address in a domain literal was a prefix of an interface address.
1655
fd6de02e
PH
1656PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1657 when verifying a sender address, unless rewrite_headers is false.
1658
58de37c5
PH
1659PH/44 Wrote a long comment about why errors_to addresses are verified as
1660 recipients, not senders.
1661
261cf466
TF
1662TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1663 the ratelimit ACL was added.
1664
3ee512ff
PH
1665PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1666
e08c430f
PH
1667PH/46 Added extra information about PostgreSQL errors to the error string.
1668
bef5a11f
PH
1669PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1670 avoiding the need to install special zones in a real server. This is
1671 backwards compatible; if it can't find the fake resolver, it drops back.
1672 Thus, both old and new test suites can be run.
1673
7546de58
TF
1674TF/02 Added util/ratelimit.pl
1675
e5d5a95f
TF
1676TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1677 clock is set back in time.
1678
2e88a017
TF
1679TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1680 Candler <B.Candler@pobox.com>.
1681
a5f65aa4
TF
1682TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1683 OK for addresses that are the result of redirections.
1684
e7726cbf
PH
1685PH/48 A number of further additions for the benefit of the new test suite,
1686 including a fake gethostbyname() that interfaces to the fake DNS resolver
1687 (see PH/47 above).
1688
a7fdad5b
TF
1689TF/06 The fix for widen_domains has also been applied to qualify_single and
1690 search_parents which are the other dnslookup options that can cause
1691 header rewrites.
1692
6af56900
PH
1693PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1694 type ("H").
1695
0925ede6
PH
1696PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1697
66afa403
TF
1698TF/07 Exim produced the error message "an SRV record indicated no SMTP
1699 service" if it encountered an MX record with an empty target hostname.
1700 The message is now "an MX or SRV record indicated no SMTP service".
1701
0154e85a
TF
1702TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1703 if the DNS of the sending site is misconfigured. This is quite a
1704 common situation. This change restores the behaviour of treating a
1705 helo verification defer as a failure.
1706
16f12c76
PH
1707PH/51 If self=fail was set on a router, the bounce message did not include the
1708 actual error message.
1709
bbe902f0 1710
e5a9dba6
PH
1711Exim version 4.52
1712-----------------
1713
1714TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1715
22c3b60b
PH
1716PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1717 command itself ended in error, the underlying message about the transport
1718 filter timeout was being overwritten with the pipe command error. Now the
1719 underlying error message should be appended to the second error message.
1720
06a9b4b5
PH
1721TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1722
c1ac6996
PH
1723PH/02 Reduce the amount of output that "make" produces by default. Full output
1724 can still be requested.
1725
9c7a242c
PH
1726PH/03 The warning log line about a condition test deferring for a "warn" verb
1727 was being output only once per connection, rather than after each
1728 occurrence (because it was using the same function as for successful
1729 "warn" verbs). This seems wrong, so I have changed it.
1730
87ba3f5f
PH
1731TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1732 it should not have, which might have caused a crash in the right
1733 circumstances, but probably never did.
1734
1735PH/04 Installed a modified version of Tony Finch's patch to make submission
1736 mode fix the return path as well as the Sender: header line, and to
1737 add a /name= option so that you can make the user's friendly name appear
1738 in the header line.
1739
29aba418
TF
1740TF/03 Added the control = fakedefer ACL modifier.
1741
fe0dab11
TF
1742TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1743 Mark Lowes for thorough testing.
870f6ba8 1744
11d337a4
TK
1745TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1746
1747TK/03 Merged latest SRS patch from Miles Wilton.
1748
415c8f3b
PH
1749PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1750 with the definition in sysexits.h (which is #included earlier).
1751 Fortunately, Exim does not actually use EX_OK. The code used to try to
1752 preserve the sysexits.h value, by assumimg that macro definitions were
1753 scanned for macro replacements. I have been disabused of this notion,
1754 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1755
958541e9
PH
1756PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1757 in the smtp transport. When a block could not be written in a single
1758 write() function, the timeout was being re-applied to each part-write.
1759 This seems wrong - if the receiver was accepting one byte at a time it
1760 would take for ever. The timeout is now adjusted when this happens. It
1761 doesn't have to be particularly precise.
1762
c206415f
TK
1763TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1764 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1765
2a4be8f9
PH
1766PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1767 without a domain if the check to <postmaster@domain> fails.
1768
1cba11c5
SC
1769SC/01 Eximstats: added -xls and the ability to specify output files
1770 (patch written by Frank Heydlauf).
1771
1772SC/02 Eximstats: use FileHandles for outputing results.
1773
1774SC/03 Eximstats: allow any combination of xls, txt, and html output.
1775
1776SC/04 Eximstats: fixed display of large numbers with -nvr option
1777
1778SC/05 Eximstats: fixed merging of reports with empty tables.
1779
1780SC/06 Eximstats: added the -include_original_destination flag
1781
1782SC/07 Eximstats: removed tabs and trailing whitespace.
1783
1005d00e
TK
1784TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1785
1786TK/06 MBOX spool code: Add real "From " MBOX separator line
1787 so the .eml file is really in mbox format (even though
1788 most programs do not really care). Patch from Alex Miller.
1789
1790TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1791 The latter is generated from $received_to and is only set if the
1792 message has one envelope recipient. SA can use these headers,
1793 obviously out-of-the-box. Patch from Alex Miller.
1794
9b4768fa
PH
1795PH/08 The ${def test on a variable was returning false if the variable's
1796 value was "0", contrary to what the specification has always said!
1797 The result should be true unless the variable is empty.
1798
1799PH/09 The syntax error of a character other than { following "${if
1800 def:variable_name" (after optional whitespace) was not being diagnosed.
1801 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1802 accidental colon was present, for example, could give incorrect results.
1803
0d7eb84a
PH
1804PH/10 Tidied the code in a number of places where the st_size field of a stat()
1805 result is used (not including appendfile, where other changes are about
1806 to be made).
1807
1808PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1809 This involved changing a lot of size variables from int to off_t. It
1810 should work with maildirs and everything.
1811
40727bee
TK
1812TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1813 spamd dying while we are connected to it.
1814
554d2369
TF
1815TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1816 <jgh@wizmail.org>
1817
1f922db1
PH
1818PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1819 function for BDB 4.3.
1820
ef213c3b
PH
1821PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1822
8ac170f3
PH
1823PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1824 the sources for PCRE have been re-arranged and more files are now
1825 involved.
1826
b1c749bb
PH
1827PH/15 The code I had for printing potentially long long variables in PH/11
1828 above was not the best (it lost precision). The length of off_t variables
1829 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1830 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1831 to be "long long int" or "long int". This is needed for the internal
1832 formatting function string_vformat().
b1c749bb 1833
4aac9b49
PH
1834PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1835 the configuration file to be ":syslog", then the script "guesses" where
1836 the logs files are, rather than using the compiled in default. In our
1837 case the guess is not the same as the compiled default, so the script
1838 suddenly stopped working when I started to use syslog. The patch checks
1839 to see if log_file_path is "". If so, it attempts to read it from exim
1840 with no configuration file to get the compiled in version, before it
1841 falls back to the previous guessing code."
1842
294520c8
TK
1843TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1844 implementing BATV in an Exim configuration. See NewStuff for the gory
1845 details.
1846
5bd022fe
PH
1847PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1848 Makefile that are specific to HP-UX.
1849
90e9ce59
PH
1850PH/18 If the "use_postmaster" option was set for a recipient callout together
1851 with the "random" option, the postmaster address was used as the MAIL
1852 FROM address for the random test, but not for the subsequent recipient
1853 test. It is now used for both.
1854
5ea81592
PH
1855PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1856 patch removes a few documentation additions to RFC 3028, because the
1857 latest draft now contains them. It adds the new en;ascii-case comparator
1858 and a new error check for 8bit text in MIME parts. Comparator and
1859 require names are now matched exactly. I enabled the subaddress
1860 extension, but it is not well tested yet (read: it works for me)."
1861
c6c2dc1d
PH
1862PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1863 rework some of the code of TK/09 above to avoid the hardwired use of
1864 "%lld" and "long long". Replaced the call to snprintf() with a call to
1865 string_vformat().
1866
fffffe4c
PH
1867PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1868 records point to non-existent hosts", "retry timeout exceeded", and
1869 "retry time not reached for any host after a long failure period".
ca02eafb 1870
9a26b6b2
PH
1871PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1872 experimental DomainKeys support:
1873
1874 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1875 (2) On an error such as an illegally used "control", the wrong name for
1876 the control was given.
1877
1878 These problems did NOT occur unless DomainKeys support was compiled.
1879
4aee0225
PH
1880PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1881
32d668a5
PH
1882PH/24 Added ${if match_ip condition.
1883
8187c3f3
PH
1884PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1885 databases so that it will be absolutely obvious if a crash occurs in the
1886 DB library. This is a regular occurrence (often caused by mis-matched
1887 db.h files).
1888
ff790e47 1889PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1890 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1891 picked up on a user's system that detects such things. There doesn't seem
1892 to be a gcc warning option for this - only an attribute that has to be
1893 put on the function's prototype. It seems that in Fedora Core 4 they have
1894 set this on a number of new functions. No doubt there will be more in due
1895 course.
ff790e47 1896
5417f6d1
PH
1897PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1898 specify a transport. However, if an address that was verified by such a
1899 router was the subject of a callout, Exim crashed because it tried to
1900 read the rcpt_include_affixes from the non-existent transport. Now it
1901 just assumes that the setting of that option is false. This bug was
1902 introduced by 4.51/PH/31.
1903
59cf8544
PH
1904PH/28 Changed -d+all to exclude +memory, because that information is very
1905 rarely of interest, but it makes the output a lot bigger. People tend to
1906 do -d+all out of habit.
1907
e7ad8a65
PH
1908PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1909 code in os-type was giving problems when libc.so lives in lib64, like on
1910 x86_64 Fedora Core.
1911
ade42478
PH
1912PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1913 aren't the modern standard, and it seems that some systems' include files
1914 don't always have them. Exim was already checking for some of the newer
1915 ones like T_AAAA, and defining it itself. I've added checks for all the
1916 record types that Exim uses.
1917
182ad5cf
PH
1918PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1919 not automatically generating a new one, as it is supposed to. This
1920 prevented TLS from working. If the file did exist, but contained invalid
1921 data, a new version was generated, as expected. It was only the case of a
1922 non-existent file that was broken.
1923
b0d9fc80
TK
1924TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1925 with a change in libdomainkeys > 0.64.
1926
1927TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1928 from DNS. If the selector record carries the flag, it now has
1929 precedence over the domain-wide flag.
1930
1931TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1932
47c7a64a
PH
1933PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1934 the use of a port name that isn't defined in /etc/services) occurred, the
1935 message was deferred as in a normal delivery, and thus remained on the
1936 spool, instead of being failed because of the mua_wrapper setting. This
1937 is now fixed, and I tidied up some of the mua_wrapper messages at the
1938 same time.
1939
a388bce4
SC
1940SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1941 the messages in a hash of arrays rather than using individual hashes.
1942 This is a bit cleaner and results in dramatic memory savings, albeit
1943 at a slight CPU cost.
1944
1945SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1946 as requested by Marc Sherman.
1947
1948SC/10 Eximstats: added histograms for user specified patterns as requested
1949 by Marc Sherman.
1950
0793e4ed
SC
1951SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1952
c58b88df
PH
1953PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1954 fopen() in the content-scanning modules that did not already have it.
1955
e7ad8a65 1956
7982096b
PH
1957Exim version 4.51
1958-----------------
1959
1a46a8c5
PH
1960TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1961 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1962
2f079f46 1963TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1964
1965TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1966
1967PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1968 to test Sieve filters that use "vacation".
1969
1970PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1971 that changes the way the GnuTLS parameters are stored in the cache file.
1972 The new format can be generated externally. For backward compatibility,
1973 if the data in the cache doesn't make sense, Exim assumes it has read an
1974 old-format file, and it generates new data and writes a new file. This
1975 means that you can't go back to an older release without removing the
1976 file.
1977
1978PH/03 A redirect router that has both "unseen" and "one_time" set does not
1979 work if there are any delivery delays because "one_time" forces the
1980 parent to be marked "delivered", so its unseen clone is never tried
1981 again. For this reason, Exim now forbids the simultaneous setting of
1982 these two options.
1983
1984PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1985 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1986 entry if you want to know the details. The fix, however, neglected to
1987 consider the case when local delivery batching is involved. The test for
1988 "previously delivered" was not happening when checking to see if an
1989 address could be batched with a previous (undelivered) one; under
1990 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1991 address.
1a46a8c5
PH
1992
1993PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1994 in its include files, and this causes problems building Exim.
1995
1996PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1997 header_syntax) but Exim was just ignoring anything given after a slash.
1998 In particular, this caused confusion with an attempt to use "verify =
1999 reverse_host_lookup/defer_ok". An error is now given when options are
2000 supplied for verify items that do not have them. (Maybe reverse_host_
2001 lookup should have a defer_ok option, but that's a different point.)
2002
2003PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
2004 defined by RFC 821) to 2048, because there were problems with some AUTH
2005 commands, and RFC 1869 says the size should be increased for extended
2006 SMTP commands that take arguments.
2007
2008PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
2009 Finch).
2010
2011PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
2012 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 2013
49c2d5ea
PH
2014PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
2015 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
2016 whatever). Otherwise the password may appear in the log. Following change
2017 PH/42 below, there is no longer a chance of it appearing in a bounce
2018 message.
49c2d5ea 2019
bf759a8b
PH
2020PH/11 Installed exipick version 20050225.0 from John Jetmore.
2021
83364d30
PH
2022PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2023 of its addresses was ever tried. (Bugzilla bug #2.)
2024
7999bbd7
PH
2025PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2026 the result incorrectly in the debug output. (It correctly added a newline
2027 to what was transported.)
2028
7dbf77c9
PH
2029TF/01 Added $received_time.
2030
74e0617f
PH
2031PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2032 commented out examples of how to interface to a virus scanner and to
2033 SpamAssassin. Also added commented examples of av_scanner and
2034 spamd_address settings.
2035
2f079f46
PH
2036PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2037 and controls are allowed in which ACLs. There were a couple of minor
2038 errors. Some of the entries in the conditions table (which is a table of
2039 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2040 negation of where the condition IS allowed.
2041
8c841523
PH
2042PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2043
7766a4f0
PH
2044PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2045 header file does not have a version number, so I've had to invent a new
2046 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2047 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2048 radiusclient), but it was contributed by a Radius user.
2049
8b417f2c
PH
2050PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2051 files or directories, for OpenSSL.
2052
901f42cb
PH
2053PH/19 When an Exim process that is running as root has to create an Exim log
2054 file, it does so in a subprocess that runs as exim:exim so as to get the
2055 ownership right at creation (otherwise, other Exim processes might see
2056 the file with the wrong ownership). There was no test for failure of this
2057 fork() call, which would lead to the process getting stuck as it waited
2058 for a non-existent subprocess. Forks do occasionally fail when resources
2059 run out. I reviewed all the other calls to fork(); they all seem to check
2060 for failure.
2061
f9b9210e
PH
2062PH/20 When checking for unexpected SMTP input at connect time (before writing
2063 the banner), Exim was not dealing correctly with a non-positive return
2064 from the read() function. If the client had disconnected by this time,
2065 the result was a log entry for a synchronization error with an empty
2066 string after "input=" when read() returned zero. If read() returned -1
2067 (an event I could not check), uninitialized data bytes were printed.
2068 There were reports of junk text (parts of files, etc) appearing after
2069 "input=".
2070
54cdb463
PH
2071PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2072
cf00dad6
PH
2073PH/22 Added support for macro redefinition, and (re)definition in between
2074 driver and ACL definitions.
2075
acb1b346
PH
2076PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2077 forgetting to use the resulting value; it was using the unexpanded value.
2078
c5ddb310
PH
2079PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2080 hadn't been configured. The fix is from Juergen Kreileder, who
2081 understands it better than I do:
2082
2083 "Here's what I see happening with three configured cyrus_sasl
2084 authenticators configured (plain, login, cram-md5):
2085
2086 On startup auth_cyrus_sasl_init() gets called for each of these.
2087 This means three calls to sasl_listmech() without a specified mech_list.
2088 => SASL tests which mechs of all available mechs actually work
2089 => three warnings about OTP not working
2090 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2091
2092 With the patch, sasl_listmech() also gets called three times. But now
2093 SASL's mech_list option is set to the server_mech specified in the the
2094 authenticator. Or in other words, the answer from sasl_listmech()
2095 gets limited to just the mech you're testing for (which is different
2096 for each call.)
2097 => the return list contains just 'plain' or 'login', 'cram-md5' or
2098 nothing depending on the value of ob->server_mech.
2099
2100 I've just tested the patch: Authentication still works fine,
2101 unavailable mechs specified in the exim configuration are still
2102 caught, and the auth.log warnings about OTP are gone."
2103
31619da6
PH
2104PH/25 When debugging is enabled, the contents of the command line are added
2105 to the debugging output, even when log_selector=+arguments is not
2106 specified.
2107
bebaf0fc
PH
2108PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2109 answer is "GNU", and only if the return is "GNU/something" is the answer
2110 "Linux".
2111
475fe28a
PH
2112PH/27 $acl_verify_message is now set immediately after the failure of a
2113 verification in an ACL, and so is available in subsequent modifiers. In
2114 particular, the message can be preserved by coding like this:
2115
2116 warn !verify = sender
2117 set acl_m0 = $acl_verify_message
2118
2119 Previously, $acl_verify_message was set only while expanding "message"
2120 and "log_message" when a very denied access.
2121
7e8bec7a
PH
2122PH/28 Modified OS/os.c-Linux with
2123
2124 -#ifndef OS_LOAD_AVERAGE
2125 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2126
2127 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2128 nomenclature these days.)
2129
e4a89c47
PH
2130PH/29 Installed patch from the Sieve maintainer that adds the options
2131 sieve_useraddress and sieve_subaddress to the redirect router.
2132
5ca2a9a1
PH
2133PH/30 In these circumstances:
2134 . Two addresses routed to the same list of hosts;
2135 . First host does not offer TLS;
2136 . First host accepts first address;
2137 . First host gives temporary error to second address;
2138 . Second host offers TLS and a TLS session is established;
2139 . Second host accepts second address.
2140 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2141 and peerdn, if requested) that were in fact used only for the second
2142 address.
7e8bec7a 2143
c688b954
PH
2144PH/31 When doing a callout as part of verifying an address, Exim was not paying
2145 attention to any local part prefix or suffix that was matched by the
2146 router that accepted the address. It now behaves in the same way as it
2147 does for delivery: the affixes are removed from the local part unless
2148 rcpt_include_affixes is set on the transport.
2149
fed77020
PH
2150PH/32 Add the sender address, as F=<...>, to the log line when logging a
2151 timeout during the DATA phase of an incoming message.
2152
7fe1560f
PH
2153PH/33 Sieve envelope tests were broken for match types other than :is. I have
2154 applied a patch sanctioned by the Sieve maintainer.
c688b954 2155
ebb6e6d5
PH
2156PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2157 the uid or gid is negative. A case of a negative gid caused this to be
2158 noticed. The fix allows for either to be negative.
2159
9c4e8f60
PH
2160PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2161 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2162 overlooked.
2163
2164PH/36 The change PH/12 above was broken. Fixed it.
2165
d7174846
PH
2166PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2167 the grounds that routing the same address twice would always produce the
2168 same answer. This might have been true once, but it is certainly no
2169 longer true now. Routing a child address may depend on the previous
2170 routing that produced that child. Some complicated redirection strategies
2171 went wrong when messages had multiple recipients, and made Exim's
2172 behaviour dependent on the order in which the addresses were given.
2173
2174 I have moved the duplicate checking until after the routing is complete.
2175 Exim scans the addresses that are assigned to local and remote
2176 transports, and removes any duplicates. This means that more work will be
2177 done, as duplicates will always all be routed, but duplicates are
2178 presumably rare, so I don't expect this is of any significance.
2179
2180 For deliveries to pipes, files, and autoreplies, the duplicate checking
2181 still happens during the routing process, since they are not going to be
2182 routed further.
2183
cfe75fc3
PH
2184PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2185 It corrects a timeout issue with spamd. This is Ian's comment: "The
2186 background is that sometimes spamd either never reads data from a
2187 connection it has accepted, or it never writes response data. The exiscan
2188 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2189 blindly assumes that writes won't block so it may never time out."
2190
be22d70e
PH
2191PH/39 Allow G after quota size as well as K and M.
2192
0612b098
PH
2193PH/40 The value set for $authenticated_id in an authenticator may not contain
2194 binary zeroes or newlines because the value is written to log lines and
2195 to spool files. There was no check on this. Now the value is run through
2196 the string_printing() function so that such characters are converted to
2197 printable escape sequences.
2198
2e0c1448
PH
2199PH/41 $message_linecount is a new variable that contains the total number of
2200 lines in the message. Compare $body_linecount, which is the count for the
2201 body only.
2202
447d236c
PH
2203PH/42 Exim no longer gives details of delivery errors for specific addresses in
2204 bounce and delay warning messages, except in certain special cases, which
2205 are as follows:
2206
2207 (a) An SMTP error message from a remote host;
2208 (b) A message specified in a :fail: redirection;
2209 (c) A message specified in a "fail" command in a system filter;
2210 (d) A message specified in a FAIL return from the queryprogram router;
2211 (e) A message specified by the cannot_route_message router option.
2212
2213 In these cases only, Exim does include the error details in bounce and
2214 warning messages. There are also a few cases where bland messages such
2215 as "unrouteable address" or "local delivery error" are given.
2216
d20976dc
PH
2217PH/43 $value is now also set for the "else" part of a ${run expansion.
2218
f656d135
PH
2219PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2220 being worked on, but at least Exim now implements the latest version to
2221 play with."
2222
2e2a30b4
PH
2223PH/45 In a pipe transport, although a timeout while waiting for the pipe
2224 process to complete was treated as a delivery failure, a timeout while
2225 writing the message to the pipe was logged, but erroneously treated as a
2226 successful delivery. Such timeouts include transport filter timeouts. For
2227 consistency with the overall process timeout, these timeouts are now
2228 treated as errors, giving rise to delivery failures by default. However,
2229 there is now a new Boolean option for the pipe transport called
2230 timeout_defer, which, if set TRUE, converts the failures into defers for
2231 both kinds of timeout. A transport filter timeout is now identified in
2232 the log output.
2233
9176e9f0
PH
2234PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2235 systems where "make" and "gmake" are different, calling "gmake" at top
2236 level broke things. I've arranged for the value of $(MAKE) to be passed
2237 from the Makefile to this script so that it can call the same version of
2238 "make".
2239
7982096b 2240
bbe902f0
PH
2241A note about Exim versions 4.44 and 4.50
2242----------------------------------------
2243
2244Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2245changes of various kinds. As a consequence, a big documentation update was
2246needed. This delayed the release for rather longer than seemed good, especially
2247in the light of a couple of (minor) security issues. Therefore, the changes
2248that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2249release. So 4.44 and 4.50 are in effect two different branches that both start
2250from 4.43.
2251
2252I have left the 4.50 change log unchanged; it contains all the changes since
22534.43. The change log for 4.44 is below; many of its items are identical to
2254those for 4.50. This seems to be the most sensible way to preserve the
2255historical information.
2256
2257
f7b63901 2258Exim version 4.50
495ae4b0
PH
2259-----------------
2260
5fe762f6
PH
2261 1. Minor wording change to the doc/README.SIEVE file.
2262
139059f6 2263 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2264 computation of the current number of files was incorrect.
495ae4b0 2265
7086e875
PH
2266 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2267 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2268 place.
2269
35af9f61
PH
2270 4. Give more explanation in the error message when the command for a transport
2271 filter fails to execute.
2272
b668c215
PH
2273 5. There are several places where Exim runs a non-Exim command in a
2274 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2275 was being done only for the command run by the queryprogram router. It is
2276 now done for all such subprocesses. The other cases are: ${run, transport
2277 filters, and the commands run by the lmtp and pipe transports.
2278
a494b1e1
PH
2279 6. Added CONFIGURE_GROUP build-time option.
2280
2281 7. Some older OS have a limit of 256 on the maximum number of file
2282 descriptors. Exim was using setrlimit() to set 1000 as a large value
2283 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2284 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2285
c5fcb476
PH
2286 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2287 was an oversight, and furthermore, ever since the addition of extra
2288 controls (e.g. 4.43/32), the checks on when to allow different forms of
2289 "control" were broken. There should now be diagnostics for all cases when a
2290 control that does not make sense is encountered.
2291
69358f02
PH
2292 9. Added the /retain_sender option to "control=submission".
2293
5be20824
PH
229410. $recipients is now available in the predata ACL (oversight).
2295
eb2c0248
PH
229611. Tidy the search cache before the fork to do a delivery from a message
2297 received from the command line. Otherwise the child will trigger a lookup
2298 failure and thereby defer the delivery if it tries to use (for example) a
2299 cached ldap connection that the parent has called unbind on.
2300
2a3eea10
PH
230112. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2302 of $address_data from the recipient verification was clobbered by the
2303 sender verification.
2304
230513. The value of address_data from a sender verification is now available in
2306 $sender_address_data in subsequent conditions in the ACL statement.
2307
23c7ff99
PH
230814. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2309
4deaf07d
PH
231015. Added a new option "connect=<time>" to callout options, to set a different
2311 connection timeout.
2312
926e1192
PH
231316. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2314 was its contents. (It was OK if the option was not defined at all.)
2315
650edc6f
PH
231617. A "Completed" log line is now written for messages that are removed from
2317 the spool by the -Mrm option.
2318
2c7db3f5
PH
231918. New variables $sender_verify_failure and $recipient_verify_failure contain
2320 information about exactly what failed.
2321
3d235903
PH
232219. Added -dd to debug only the daemon process.
2323
7c7ad977
PH
232420. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2325 handles timeouts, both on the server side and network timeouts. Renamed the
2326 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2327
981756db
PH
232821. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2329 It is now set to "smtps".
2330
d4eb88df
PH
233122. $host_address is now set to the target address during the checking of
2332 ignore_target_hosts.
2333
233423. When checking ignore_target_hosts for an ipliteral router, no host name was
2335 being passed; this would have caused $sender_host_name to have been used if
2336 matching the list had actually called for a host name (not very likely,
2337 since this list is usually IP addresses). A host name is now passed as
2338 "[x.x.x.x]".
2339
7d468ab8
PH
234024. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2341 code that specifies a non-restarting handler (typically sigaction() in
2342 modern systems) in an attempt to fix a rare and obscure crash bug.
2343
234425. Narrowed the window for a race in the daemon that could cause it to ignore
2345 SIGCHLD signals. This is not a major problem, because they are used only to
2346 wake it up if nothing else does.
2347
62c0818f
PH
234826. A malformed maildirsize file could cause Exim to calculate negative values
2349 for the mailbox size or file count. Odd effects could occur as a result.
2350 The maildirsize information is now recalculated if the size or filecount
2351 end up negative.
2352
26034054
PH
235327. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2354 support for a long time. Removed HAVE_SYS_VFS_H.
2355
af66f652
PH
235628. Installed the latest version of exipick from John Jetmore.
2357
90af77f4
PH
235829. In an address list, if the pattern was not a regular expression, an empty
2359 subject address (from a bounce message) matched only if the pattern was an
2360 empty string. Non-empty patterns were not even tested. This was the wrong
2361 because it is perfectly reasonable to use an empty address as part of a
2362 database query. An empty address is now tested by patterns that are
2363 lookups. However, all the other forms of pattern expect the subject to
2364 contain a local part and a domain, and therefore, for them, an empty
2365 address still always fails if the pattern is not itself empty.
2366
d8ef3577
PH
236730. Exim went into a mad DNS loop when attempting to do a callout where the
2368 host was specified on an smtp transport, and looking it up yielded more
2369 than one IP address.
2370
5cb8cbc6
PH
237131. Re-factored the code for checking spool and log partition space into a
2372 function that finds that data and another that does the check. The former
2373 is then used to implement four new variables: $spool_space, $log_space,
2374 $spool_inodes, and $log_inodes.
2375
14702f5b
PH
237632. The RFC2047 encoding function was originally intended for short strings
2377 such as real names; it was not keeping to the 75-character limit for
2378 encoded words that the RFC imposes. It now respects the limit, and
2379 generates multiple encoded words if necessary. To be on the safe side, I
2380 have increased the buffer size for the ${rfc2047: expansion operator from
2381 1024 to 2048 bytes.
2382
063b1e99
PH
238333. It is now permitted to omit both strings after an "if" condition; if the
2384 condition is true, the result is "true". As before, when the second string
2385 is omitted, a false condition yields an empty string. This makes it less
2386 cumbersome to write custom ACL and router conditions.
2387
652e1b65
PH
238834. Failure to deliver a bounce message always caused it to be frozen, even if
2389 there was an errors_to setting on the router. The errors_to setting is now
2390 respected.
2391
6f0c9a4f
PH
239235. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2393 canonical form (fully expanded) before being placed in
2394 $sender_host_address.
2395
33397d19
PH
239636. The table in the code that translates DNS record types into text (T_A to
2397 "A" for instance) was missing entries for NS and CNAME. It is just possible
2398 that this could have caused confusion if both these types were looked up
2399 for the same domain, because the text type is used as part of Exim's
2400 per-process caching. But the chance of anyone hitting this buglet seems
2401 very small.
2402
7bb56e1f
PH
240337. The dnsdb lookup has been extended in a number of ways.
2404
2405 (1) There is a new type, "zns", which walks up the domain tree until it
2406 finds some nameserver records. It should be used with care.
2407
ea3bc19b
PH
2408 (2) There is a new type, "mxh", which is like "mx" except that it returns
2409 just the host names, not the priorities.
2410
2411 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2412 looked up. The behaviour when one of the lookups defers can be
2413 controlled by a keyword.
7bb56e1f 2414
ea3bc19b 2415 (4) It is now possible to specify the separator character for use when
7bb56e1f 2416 multiple records are returned.
33397d19 2417
0bcb2a0e
PH
241838. The dnslists ACL condition has been extended: it is now possible to supply
2419 a list of IP addresses and/or domains to be looked up in a particular DNS
2420 domain.
2421
2ac0e484
PH
242239. Added log_selector=+queue_time_overall.
2423
4e1fde53
PH
242440. When running the queue in the test harness, wait just a tad after forking a
2425 delivery process, to get repeatability of debugging output.
2426
de365ded
PH
242741. Include certificate and key file names in error message when GnuTLS fails
2428 to set them up, because the GnuTLS error message doesn't include the name
2429 of the failing file when there is a problem reading it.
2430
f05da2e8
PH
243142. Allow both -bf and -bF in the same test run.
2432
d6453af2
PH
243343. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2434
f7b63901
PH
243544. The "Exiscan patch" is now merged into the mainline Exim source.
2436
243745. Sometimes the final signoff response after QUIT could fail to get
2438 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2439 < 0 before doing a fflush(). This bug looks as though it goes back to the
2440 introduction of TLS in release 3.20, but "sometimes" must have been rare
2441 because the tests only now provoked it.
2442
a444213a
PH
244346. Reset the locale to "C" after calling embedded Perl, in case it was changed
2444 (this can affect the format of dates).
2445
0ec020ea
PH
244647. exim_tidydb, when checking for the continued existence of a message for
2447 which it has found a message-specific retry record, was not finding
2448 messages that were in split spool directories. Consequently, it was
2449 deleting retry records that should have stayed in existence.
2450
b1206957
PH
245148. Steve fixed some bugs in eximstats.
2452
245349. The SPA authentication driver was not abandoning authentication and moving
2454 on to the next authenticator when an expansion was forced to fail,
2455 contradicting the general specification for all authenticators. Instead it
2456 was generating a temporary error. It now behaves as specified.
2457
26dd5a95
PH
245850. The default ordering of permitted cipher suites for GnuTLS was pessimal
2459 (the order specifies the preference for clients). The order is now AES256,
2460 AES128, 3DES, ARCFOUR128.
2461
343b2385
PH
246251. Small patch to Sieve code - explicitly set From: when generating an
2463 autoreply.
2464
1c5466b9
PH
246552. Exim crashed if a remote delivery caused a very long error message to be
2466 recorded - for instance if somebody sent an entire SpamAssassin report back
2467 as a large number of 550 error lines. This bug was coincidentally fixed by
2468 increasing the size of one of Exim's internal buffers (big_buffer) that
2469 happened as part of the Exiscan merge. However, to be on the safe side, I
2470 have made the code more robust (and fixed the comments that describe what
2471 is going on).
2472
55ee9ee3
PH
247353. Now that there can be additional text after "Completed" in log lines (if
2474 the queue_time_overall log selector is set), a one-byte patch to exigrep
2475 was needed to allow it to recognize "Completed" as not the last thing in
2476 the line.
2477
d38f8232
PH
247854. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2479 patch that reportedly fixes this has been added. I am not expert enough to
2480 create a test for it. This is what the patch creator wrote:
2481
2482 "I found a little strange behaviour of ldap code when working with
2483 Windows 2003 AD Domain, where users was placed in more than one
2484 Organization Units. When I tried to give exim partial DN, the exit code
2485 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2486 But simultaneously result of request was absolutely normal ldap result,
2487 so I produce this patch..."
2488
3295e65b
PH
2489 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2490 REFERENCE, so I have modified the code to exclude the patch when that macro
2491 is not defined.
2492
7102e136
PH
249355. Some experimental protocols are using DNS PTR records for new purposes. The
2494 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2495 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2496 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2497 CAN-2005-0021
7102e136 2498
3ca0ba97
PH
249956. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2500
c2bcbe20
PH
250157. Double the size of the debug message buffer (to 2048) so that more of very
2502 long debug lines gets shown.
2503
18ce445d
PH
250458. The exicyclog utility now does better if the number of log files to keep
2505 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2506
1f5b4c3d
PH
250759. Two changes related to the smtp_active_hostname option:
2508
2509 (1) $smtp_active_hostname is now available as a variable.
2510 (2) The default for smtp_banner uses $smtp_active_hostname instead
2511 of $primary_hostname.
2512
b975ba52
PH
251360. The host_aton() function is supposed to be passed a string that is known
2514 to be a valid IP address. However, in the case of IPv6 addresses, it was
2515 not checking this. This is a hostage to fortune. Exim now panics and dies
2516 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2517 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2518 components; fortuitously, this particular loophole had already been fixed
2519 by change 4.50/55 above.
2520
2521 If there are any other similar loopholes, the new check in host_aton()
2522 itself should stop them being exploited. The report I received stated that
2523 data on the command line could provoke the exploit when Exim was running as
2524 exim, but did not say which command line option was involved. All I could
2525 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2526 running as the user.
ea3a6f44 2527 CAN-2005-0021
85b87bc2
PH
2528
252961. There was a buffer overflow vulnerability in the SPA authentication code
2530 (which came originally from the Samba project). I have added a test to the
2531 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2532 CAN-2005-0022
b975ba52 2533
17ffcae7
PH
253462. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2535 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2536
d95f9fdb
PH
253763. The daemon start-up calls getloadavg() while still root for those OS that
2538 need the first call to be done as root, but it missed one case: when
2539 deliver_queue_load_max is set with deliver_drop_privilege. This is
2540 necessary for the benefit of the queue runner, because there is no re-exec
2541 when deliver_drop_privilege is set.
2542
86b8287f
PH
254364. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2544 This has been fixed.
2545
60dc5e56
PH
254665. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2547 was in use, was not putting the data itself into the right store pool;
2548 consequently, it could be overwritten for a subsequent message in the same
2549 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2550 the caching.)
2551
533244af
PH
255266. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2553
a5a28604
PH
255467. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2555 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2556 the function were treating the return as a boolean value, which happened to
2557 work because 0=false and not-0=true, but is not correct code.
2558
7e634d24
PH
255968. The host_aton() function was not handling scoped IPv6 addresses (those
2560 with, for example, "%eth0" on the end) correctly.
2561
3e11c26b
PH
256269. Fixed some compiler warnings in acl.c for the bitmaps specified with
2563 negated items (that is, ~something) in unsigned ints. Some compilers
2564 apparently mutter when there is no cast.
2565
6729cf78
PH
256670. If an address verification called from an ACL failed, and did not produce a
2567 user-specific message (i.e. there was only a "system" message), nothing was
2568 put in $acl_verify_message. In this situation, it now puts the system
2569 message there.
2570
00f00ca5
PH
257171. Change 4.23/11 added synchronization checking at the start of an SMTP
2572 session; change 4.31/43 added the unwanted input to the log line - except
2573 that it did not do this in the start of session case. It now does.
2574
c9bdd01c
PH
257572. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2576 This is wrong and can cause the other end to generate a synchronization
2577 error if it is another Exim or anything else that does the synchronization
2578 check. A QUIT command is no longer sent after a timeout.
2579
d43194df
PH
258073. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2581 during host lookups.
2582
fe5b5d0b
PH
258374. The defer_ok option of callout verification was not working if it was used
2584 when verifying addresses in header lines, that is, for this case:
2585
2586 verify = header_sender/callout=defer_ok
2587
76a2d7ba
PH
258875. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2589 those file descriptors could be used for SMTP connections. If anything
2590 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2591 could be sent to the SMTP client, causing chaos. The daemon now opens
2592 stdin, stdout, and stderr to /dev/null when it puts itself into the
2593 background.
2594
259576. Arrange for output from Perl's "warn" command to be written to Exim's main
2596 log by default. The user can override this with suitable Perl magic.
2597
04f7d5b9
PH
259877. The use of log_message on a "discard" ACL verb, which is supposed to add to
2599 the log message when discard triggers, was not working for the DATA ACL or
2600 for the non-SMTP ACL.
2601
bc60667e
PH
260278. Error message wording change in sieve.c.
2603
bb6e88ff
PH
260479. If smtp_accept_max_per_host was set, the number of connections could be
2605 restricted to fewer than expected, because the daemon was trying to set up
2606 a new connection before checking whether the processes handling previous
2607 connections had finished. The check for completed processes is now done
2608 earlier. On busy systems, this bug wouldn't be noticed because something
2609 else would have woken the daemon, and it would have reaped the completed
2610 process earlier.
2611
1e70f85b
PH
261280. If a message was submitted locally by a user whose login name contained one
2613 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2614 It caused a spool format error. I have fixed the spool reading code. A
2615 related problem was that the "from" clause in the Received: line became
2616 illegal because of the space(s). It is now covered by ${quote_local_part.
2617
261881. Included the latest eximstats from Steve (adds average sizes to HTML Top
2619 tables).
2620
4e01f9d6
PH
262182. Updated OS/Makefile-AIX as per message from Mike Meredith.
2622
1ee1cef2
PH
262383. Patch from Sieve maintainer to fix unterminated string problem in
2624 "vacation" handling.
2625
6e2b4ccc
PH
262684. Some minor changes to the Linux configuration files to help with other
2627 OS variants using glibc.
2628
8e669ac1
PH
262985. One more patch for Sieve to update vacation handling to latest spec.
2630
495ae4b0 2631
bbe902f0
PH
2632----------------------------------------------------
2633See the note above about the 4.44 and 4.50 releases.
2634----------------------------------------------------
2635
2636
2637Exim version 4.44
2638-----------------
2639
2640 1. Change 4.43/35 introduced a bug that caused file counts to be
2641 incorrectly computed when quota_filecount was set in an appendfile
2642 transport
2643
2644 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2645 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2646 place.
2647
2648 3. Give more explanation in the error message when the command for a transport
2649 filter fails to execute.
2650
2651 4. There are several places where Exim runs a non-Exim command in a
2652 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2653 was being done only for the command run by the queryprogram router. It is
2654 now done for all such subprocesses. The other cases are: ${run, transport
2655 filters, and the commands run by the lmtp and pipe transports.
2656
2657 5. Some older OS have a limit of 256 on the maximum number of file
2658 descriptors. Exim was using setrlimit() to set 1000 as a large value
2659 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2660 systems. I've change it so that if it can't get 1000, it tries for 256.
2661
2662 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2663 was an oversight, and furthermore, ever since the addition of extra
2664 controls (e.g. 4.43/32), the checks on when to allow different forms of
2665 "control" were broken. There should now be diagnostics for all cases when a
2666 control that does not make sense is encountered.
2667
2668 7. $recipients is now available in the predata ACL (oversight).
2669
2670 8. Tidy the search cache before the fork to do a delivery from a message
2671 received from the command line. Otherwise the child will trigger a lookup
2672 failure and thereby defer the delivery if it tries to use (for example) a
2673 cached ldap connection that the parent has called unbind on.
2674
2675 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2676 of $address_data from the recipient verification was clobbered by the
2677 sender verification.
2678
267910. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2680 was its contents. (It was OK if the option was not defined at all.)
2681
268211. A "Completed" log line is now written for messages that are removed from
2683 the spool by the -Mrm option.
2684
268512. $host_address is now set to the target address during the checking of
2686 ignore_target_hosts.
2687
268813. When checking ignore_target_hosts for an ipliteral router, no host name was
2689 being passed; this would have caused $sender_host_name to have been used if
2690 matching the list had actually called for a host name (not very likely,
2691 since this list is usually IP addresses). A host name is now passed as
2692 "[x.x.x.x]".
2693
269414. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2695 code that specifies a non-restarting handler (typically sigaction() in
2696 modern systems) in an attempt to fix a rare and obscure crash bug.
2697
269815. Narrowed the window for a race in the daemon that could cause it to ignore
2699 SIGCHLD signals. This is not a major problem, because they are used only to
2700 wake it up if nothing else does.
2701
270216. A malformed maildirsize file could cause Exim to calculate negative values
2703 for the mailbox size or file count. Odd effects could occur as a result.
2704 The maildirsize information is now recalculated if the size or filecount
2705 end up negative.
2706
270717. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2708 support for a long time. Removed HAVE_SYS_VFS_H.
2709
ea3a6f44 271018. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2711
271219. Allow an empty sender to be matched against a lookup in an address list.
2713 Previously the only cases considered were a regular expression, or an
2714 empty pattern.
2715
271620. Exim went into a mad DNS lookup loop when doing a callout where the
2717 host was specified on the transport, if the DNS lookup yielded more than
2718 one IP address.
2719
ea3a6f44
NM
272021. The RFC2047 encoding function was originally intended for short strings
2721 such as real names; it was not keeping to the 75-character limit for
2722 encoded words that the RFC imposes. It now respects the limit, and
2723 generates multiple encoded words if necessary. To be on the safe side, I
2724 have increased the buffer size for the ${rfc2047: expansion operator from
2725 1024 to 2048 bytes.
bbe902f0 2726
ea3a6f44
NM
272722. Failure to deliver a bounce message always caused it to be frozen, even if
2728 there was an errors_to setting on the router. The errors_to setting is now
2729 respected.
bbe902f0
PH
2730
273123. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2732 canonical form (fully expanded) before being placed in
2733 $sender_host_address.
2734
273524. Updated eximstats to version 1.33
2736
ea3a6f44
NM
273725. Include certificate and key file names in error message when GnuTLS fails
2738 to set them up, because the GnuTLS error message doesn't include the name
2739 of the failing file when there is a problem reading it.
bbe902f0
PH
2740
274126. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2742 As per change 25.
bbe902f0 2743
ea3a6f44
NM
274427. Reset the locale to "C" after calling embedded Perl, in case it was changed
2745 (this can affect the format of dates).
bbe902f0 2746
ea3a6f44
NM
274728. exim_tidydb, when checking for the continued existence of a message for
2748 which it has found a message-specific retry record, was not finding
2749 messages that were in split spool directories. Consequently, it was
2750 deleting retry records that should have stayed in existence.
bbe902f0
PH
2751
275229. eximstats updated to version 1.35
2753 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2754 1.35 - bugfix such that pie charts by volume are generated correctly
2755
ea3a6f44
NM
275630. The SPA authentication driver was not abandoning authentication and moving
2757 on to the next authenticator when an expansion was forced to fail,
2758 contradicting the general specification for all authenticators. Instead it
2759 was generating a temporary error. It now behaves as specified.
bbe902f0 2760
ea3a6f44
NM
276131. The default ordering of permitted cipher suites for GnuTLS was pessimal
2762 (the order specifies the preference for clients). The order is now AES256,
2763 AES128, 3DES, ARCFOUR128.
bbe902f0 2764
ea3a6f44
NM
276531. Small patch to Sieve code - explicitly set From: when generating an
2766 autoreply.
bbe902f0 2767
ea3a6f44
NM
276832. Exim crashed if a remote delivery caused a very long error message to be
2769 recorded - for instance if somebody sent an entire SpamAssassin report back
2770 as a large number of 550 error lines. This bug was coincidentally fixed by
2771 increasing the size of one of Exim's internal buffers (big_buffer) that
2772 happened as part of the Exiscan merge. However, to be on the safe side, I
2773 have made the code more robust (and fixed the comments that describe what
2774 is going on).
bbe902f0 2775
ea3a6f44
NM
277633. Some experimental protocols are using DNS PTR records for new purposes. The
2777 keys for these records are domain names, not reversed IP addresses. The
2778 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2779 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2780 CAN-2005-0021
2781
ea3a6f44
NM
278234. The host_aton() function is supposed to be passed a string that is known
2783 to be a valid IP address. However, in the case of IPv6 addresses, it was
2784 not checking this. This is a hostage to fortune. Exim now panics and dies
2785 if the condition is not met. A case was found where this could be provoked
2786 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2787 components; fortuitously, this particular loophole had already been fixed
2788 by change 4.50/55 or 4.44/33 above.
2789
2790 If there are any other similar loopholes, the new check in host_aton()
2791 itself should stop them being exploited. The report I received stated that
2792 data on the command line could provoke the exploit when Exim was running as
2793 exim, but did not say which command line option was involved. All I could
2794 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2795 running as the user.
bbe902f0
PH
2796 CAN-2005-0021
2797
ea3a6f44
NM
279835. There was a buffer overflow vulnerability in the SPA authentication code
2799 (which came originally from the Samba project). I have added a test to the
2800 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2801 CAN-2005-0022
2802
ea3a6f44
NM
280336. The daemon start-up calls getloadavg() while still root for those OS that
2804 need the first call to be done as root, but it missed one case: when
2805 deliver_queue_load_max is set with deliver_drop_privilege. This is
2806 necessary for the benefit of the queue runner, because there is no re-exec
2807 when deliver_drop_privilege is set.
bbe902f0 2808
ea3a6f44
NM
280937. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2810 was in use, was not putting the data itself into the right store pool;
2811 consequently, it could be overwritten for a subsequent message in the same
2812 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2813 the caching.)
bbe902f0 2814
ea3a6f44
NM
281538. Sometimes the final signoff response after QUIT could fail to get
2816 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2817 < 0 before doing a fflush(). This bug looks as though it goes back to the
2818 introduction of TLS in release 3.20, but "sometimes" must have been rare
2819 because the tests only now provoked it.
bbe902f0
PH
2820
2821
495ae4b0
PH
2822Exim version 4.43
2823-----------------
2824
2825 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2826 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2827 Now it returns an integer. A number of calls were still expecting a T/F
2828 return. Fortuitously, in all cases, the tests worked in OK situations,
2829 which is the norm. However, things would have gone wrong on any write
2830 failures on the smtp file descriptor. This function is used when sending
2831 messages over SMTP and also when doing verify callouts.
2832
2833 2. When Exim is called to do synchronous delivery of a locally submitted
2834 message (the -odf or -odi options), it no longer closes stderr before doing
2835 the delivery.
2836
2837 3. Implemented the mua_wrapper option.
2838
2839 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2840
2841 5. Implemented the functions header_remove(), header_testname(),
2842 header_add_at_position(), and receive_remove_recipient(), and exported them
2843 to local_scan().
2844
2845 6. If an ACL "warn" statement specified the addition of headers, Exim already
2846 inserted X-ACL-Warn: at the start if there was no header name. However, it
2847 was not making this test for the second and subsequent header lines if
2848 there were newlines in the string. This meant that an invalid header could
2849 be inserted if Exim was badly configured.
2850
2851 7. Allow an ACL "warn" statement to add header lines at the start or after all
2852 the Received: headers, as well as at the end.
2853
2854 8. Added the rcpt_4xx retry error code.
2855
2856 9. Added postmaster_mailfrom=xxx to callout verification option.
2857
285810. Added mailfrom=xxxx to the callout verification option, for verify=
2859 header_sender only.
2860
286111. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2862 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2863
286412. Inserted some casts to stop certain compilers warning when using pointer
2865 differences as field lengths or precisions in printf-type calls (mostly
2866 affecting debugging statements).
2867
286813. Added optional readline() support for -be (dynamically loaded).
2869
287014. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2871 same clock tick as a message's arrival, so that its received time was the
2872 same as the "first fail" time on the retry record, and that message
2873 remained on the queue past the ultimate address timeout, every queue runner
2874 would try a delivery (because it was past the ultimate address timeout) but
2875 after another failure, the ultimate address timeout, which should have then
2876 bounced the address, did not kick in. This was a "< instead of <=" error;
2877 in most cases the first failure would have been in the next clock tick
2878 after the received time, and all would be well.
2879
288015. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2881 being recognized when the domain list was tested by the match_domain
2882 condition in an expansion string.
2883
288416. Added the ${str2b64: operator.
2885
288617. Exim was always calling setrlimit() to set a large limit for the number of
2887 processes, without checking whether the existing limit was already
2888 adequate. (It did check for the limit on file descriptors.) Furthermore,
2889 errors from getrlimit() and setrlimit() were being ignored. Now they are
2890 logged to the main and panic logs, but Exim does carry on, to try to do its
2891 job under whatever limits there are.
2892
289318. Imported PCRE 5.0.
2894
289519. Trivial typo in log message " temporarily refused connection" (the leading
2896 space).
2897
289820. If the log selector return_path_on_delivery was set and an address was
2899 redirected to /dev/null, the delivery process crashed because it assumed
2900 that a return path would always be set for a "successful" delivery. In this
2901 case, the whole delivery is bypassed as an optimization, and therefore no
2902 return path is set.
2903
290421. Internal re-arrangement: the function for sending a challenge and reading
2905 a response while authentication was assuming a zero-terminated challenge
2906 string. It's now changed to take a pointer and a length, to allow for
2907 binary data in such strings.
2908
290922. Added the cyrus_sasl authenticator (code supplied by MBM).
2910
291123. Exim was not respecting finduser_retries when seeking the login of the
2912 uid under which it was called; it was always trying 10 times. (The default
2913 setting of finduser_retries is zero.) Also, it was sleeping after the final
2914 failure, which is pointless.
2915
291624. Implemented tls_on_connect_ports.
2917
291825. Implemented acl_smtp_predata.
2919
292026. If the domain in control=submission is set empty, Exim assumes that the
2921 authenticated id is a complete email address when it generates From: or
2922 Sender: header lines.
2923
292427. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2925 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2926 chown and chgrp in /bin and hostname in /usr/bin.
2927
292828. Exim was keeping the "process log" file open after each use, just as it
2929 does for the main log. This opens the possibility of it remaining open for
2930 long periods when the USR1 signal hits a daemon. Occasional processlog
2931 errors were reported, that could have been caused by this. Anyway, it seems
2932 much more sensible not to leave this file open at all, so that is what now
2933 happens.
2934
293529. The long-running daemon process does not normally write to the log once it
2936 has entered its main loop, and it closes the log before doing so. This is
2937 so that log files can straightforwardly be renamed and moved. However,
2938 there are a couple of unusual error situations where the daemon does write
2939 log entries, and I had neglected to close the log afterwards.
2940
294130. The text of an SMTP error response that was received during a remote
2942 delivery was being truncated at 512 bytes. This is too short for some of
2943 the long messages that one sometimes sees. I've increased the limit to
2944 1024.
2945
294631. It is now possible to make retry rules that apply only when a message has a
2947 specific sender, in particular, an empty sender.
2948
294932. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2950 it possible to be selective about when SMTP synchronization is enforced.
2951
295233. Added "control = caseful_local_part" and "control = "caselower_local_part".
2953
295432. Implemented hosts_connection_nolog.
2955
295633. Added an ACL for QUIT.
2957
295834. Setting "delay_warning=" to disable warnings was not working; it gave a
2959 syntax error.
2960
296135. Added mailbox_size and mailbox_filecount to appendfile.
2962
296336. Added control = no_multiline_responses to ACLs.
2964
296537. There was a bug in the logic of the code that waits for the clock to tick
2966 in the case where the clock went backwards by a substantial amount such
2967 that the microsecond fraction of "now" was more than the microsecond
2968 fraction of "then" (but the whole seconds number was less).
2969
297038. Added support for the libradius Radius client library this is found on
2971 FreeBSD (previously only the radiusclient library was supported).
2972
2973
2974Exim version 4.42
2975-----------------
2976
2977 1. When certain lookups returned multiple values in the form name=value, the
2978 quoting of the values was not always being done properly. Specifically:
2979 (a) If the value started with a double quote, but contained no whitespace,
2980 it was not quoted.
2981 (b) If the value contained whitespace other than a space character (i.e.
2982 tabs or newlines or carriage returns) it was not quoted.
2983 This fix has been applied to the mysql and pgsql lookups by writing a
2984 separate quoting function and calling it from the lookup code. The fix
2985 should probably also be applied to nisplus, ibase and oracle lookups, but
2986 since I cannot test any of those, I have not disturbed their existing code.
2987
2988 2. A hit in the callout cache for a specific address caused a log line with no
2989 reason for rejecting RCPT. Now it says "Previous (cached) callout
2990 verification failure".
2991
2992 3. There was an off-by-one bug in the queryprogram router. An over-long
2993 return line was truncated at 256 instead of 255 characters, thereby
2994 overflowing its buffer with the terminating zero. As well as fixing this, I
2995 have increased the buffer size to 1024 (and made a note to document this).
2996
2997 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2998 when Exim is waiting for an SMTP response from a remote server, Exim
2999 restarts its select() call on the socket, thereby resetting its timeout.
3000 This is not a problem when such interrupts are rare. Somebody set up a cron
3001 job to run exiwhat every 2 minutes, which is less than the normal select()
3002 timeout (5 or 10 minutes). This meant that the select() timeout never
3003 kicked in because it was always reset. I have fixed this by comparing the
3004 time when an interrupt arrives with the time at the start of the first call
3005 to select(). If more time than the timeout has elapsed, the interrupt is
3006 treated as a timeout.
3007
3008 5. Some internal re-factoring in preparation for the addition of Sieve
3009 extensions (by MH). In particular, the "personal" test is moved to a
3010 separate function, and given an option for scanning Cc: and Bcc: (which is
3011 not set for Exim filters).
3012
3013 6. When Exim created an email address using the login of the caller as the
3014 local part (e.g. when creating a From: or Sender: header line), it was not
3015 quoting the local part when it contained special characters such as @.
3016
3017 7. Installed new OpenBSD configuration files.
3018
3019 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3020 try to make them clearer.
3021
3022 9. Callout options, other than the timeout value, were being ignored when
3023 verifying sender addresses in header lines. For example, when using
3024
3025 verify = header_sender/callout=no_cache
3026
3027 the cache was (incorrectly) being used.
3028
302910. Added a missing instance of ${EXE} to the exim_install script; this affects
3030 only the Cygwin environment.
3031
303211. When return_path_on_delivery was set as a log selector, if different remote
3033 addresses in the same message used different return paths and parallel
3034 remote delivery occurred, the wrong values would sometimes be logged.
3035 (Whenever a remote delivery process finished, the return path value from
3036 the most recently started remote delivery process was logged.)
3037
303812. RFC 3848 specifies standard names for the "with" phrase in Received: header
3039 lines when AUTH and/or TLS are in use. This is the "received protocol"
3040 field. Exim used to use "asmtp" for authenticated SMTP, without any
3041 indication (in the protocol name) for TLS use. Now it follows the RFC and
3042 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3043 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3044 names appear in log lines as well as in Received: header lines.
3045
304613. Installed MH's patches for Sieve to add the "copy" and "vacation"
3047 extensions, and comparison tests, and to fix some bugs.
3048
304914. Changes to the "personal" filter test:
3050
3051 (1) The test was buggy in that it was just doing the equivalent of
3052 "contains" tests on header lines. For example, if a user's address was
3053 anne@some.where, the "personal" test would incorrectly be true for
3054
3055 To: susanne@some.where
3056
3057 This test is now done by extracting each address from the header in turn,
3058 and checking the entire address. Other tests that are part of "personal"
3059 are now done using regular expressions (for example, to check local parts
3060 of addresses in From: header lines).
3061
3062 (2) The list of non-personal local parts in From: addresses has been
3063 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3064 taken from the Sieve specification recommendations.
3065
3066 (3) If the message contains any header line starting with "List-" it is
3067 treated as non-personal.
3068
3069 (4) The test for "circular" in the Subject: header line has been removed
3070 because it now seems ill-conceived.
3071
307215. Minor typos in src/EDITME comments corrected.
3073
307416. Installed latest exipick from John Jetmore.
3075
307617. If headers_add on a router specified a text string that was too long for
3077 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3078 of string_sprintf() is now avoided.
3079
308018. $message_body_size was not set (it was always zero) when running the DATA
3081 ACL and the local_scan() function.
3082
308319. For the "mail" command in an Exim filter, no default was being set for
3084 the once_repeat time, causing a random time value to be used if "once" was
3085 specified. (If the value happened to be <= 0, no repeat happened.) The
3086 default is now 0s, meaning "never repeat". The "vacation" command was OK
3087 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3088 (I found it when inspecting the code).
3089
309020. There is now an overall timeout for performing a callout verification. It
3091 defaults to 4 times the callout timeout, which applies to individual SMTP
3092 commands during the callout. The overall timeout applies when there is more
3093 than one host that can be tried. The timeout is checked before trying the
3094 next host. This prevents very long delays if there are a large number of
3095 hosts and all are timing out (e.g. when the network connections are timing
3096 out). The value of the overall timeout can be changed by specifying an
3097 additional sub-option for "callout", called "maxwait". For example:
3098
3099 verify = sender/callout=5s,maxwait=20s
3100
310121. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3102 to the end before writing, but this should make it even safer).
3103
310422. Exim was forgetting that it had advertised PIPELINING for the second and
3105 subsequent messages on an SMTP connection. It was also not resetting its
3106 memory on STARTTLS and an internal HELO.
3107
310823. When Exim logs an SMTP synchronization error within a session, it now
3109 records whether PIPELINING has been advertised or not.
3110
311124. Added 3 instances of "(long int)" casts to time_t variables that were being
3112 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3113 rather than long int.
3114
311525. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3116
311726. Added the never_mail option to autoreply.
3118
3119
3120Exim version 4.41
3121-----------------
3122
3123 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3124 crash if the getsockname() call failed; this can happen if a connection is
3125 closed very soon after it is established. The problem was simply in the
3126 order in which certain operations were done, causing Exim to try to write
3127 to the SMTP stream before it had set up the file descriptor. The bug has
3128 been fixed by making things happen in the correct order.
3129
3130
3131Exim version 4.40
3132-----------------
3133
3134 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3135 before the connection was closed, thus losing the rejection response.
3136
3137 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3138 some early Solaris releases, but causes trouble in current releases where
3139 socklen_t is defined.
3140
3141 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3142 always exist.
3143
3144 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3145 configured.
3146
3147 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3148 that releasing the top of it at the end releases what was used for sub-
3149 expansions (unless the block got too big). However, discard this block if
3150 the first thing is a variable or header, so that we can use its block when
3151 it is dynamic (useful for very large $message_headers, for example).
3152
3153 6. Lookups now cache *every* query, not just the most recent. A new, separate
3154 store pool is used for this. It can be recovered when all lookup caches are
3155 flushed. Lookups now release memory at the end of their result strings.
3156 This has involved some general refactoring of the lookup sources.
3157
3158 7. Some code has been added to the store_xxx() functions to reduce the amount
3159 of flapping under certain conditions.
3160
3161 8. log_incoming_interface used to affect only the <= reception log lines. Now
3162 it causes the local interface and port to be added to several more SMTP log
3163 lines, for example "SMTP connection from", and rejection lines.
3164
3165 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3166
316710. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3168
316911. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3170 could be overwritten at the end of the current message (or the start of a
3171 new message if it was set in a HELO ACL). The value is now preserved for
3172 the duration of the SMTP connection.
3173
317412. If a transport had a headers_rewrite setting, and a matching header line
3175 contained an unqualified address, that address was qualified, even if it
3176 did not match any rewriting rules. The underlying bug was that the values
3177 of the flags that permit the existence of unqualified sender and recipient
3178 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3179 non-local messages, and by -bnq for local messages) were not being
3180 preserved with the message after it was received.
3181
318213. When Exim was logging an SMTP synchronization error, it could sometimes log
3183 "next input=" as part of the text comprising the host identity instead of
3184 the correct text. The code was using the same buffer for two different
3185 strings. However, depending on which order the printing function evaluated
3186 its arguments, the bug did not always show up. Under Linux, for example, my
3187 test suite worked just fine.
3188
318914. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3190 doesn't work with some older versions of Perl. It has been changed to "my",
3191 which in any case is probably the better facility to use.
3192
319315. A really picky compiler found some instances of statements for creating
3194 error messages that either had too many or two few arguments for the format
3195 string.
3196
319716. The size of the buffer for calls to the DNS resolver has been increased
3198 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3199 for addresses that have a lot of PTR records. This alleviates a problem; it
3200 does not fully solve it.
3201
320217. A dnsdb lookup for PTR records that receives more data than will fit in the
3203 buffer now truncates the list and logs the incident, which is the same
3204 action as happens when Exim is looking up a host name and its aliases.
3205 Previously in this situation something unpredictable would happen;
3206 sometimes it was "internal error: store_reset failed".
3207
320818. If a server dropped the connection unexpectedly when an Exim client was
3209 using GnuTLS and trying to read a response, the client delivery process
3210 crashed while trying to generate an error log message.
3211
321219. If a "warn" verb in an ACL added multiple headers to a message in a single
3213 string, for example:
3214
3215 warn message = H1: something\nH2: something
3216
3217 the text was added as a single header line from Exim's point of view
3218 though it ended up OK in the delivered message. However, searching for the
3219 second and subsequent header lines using $h_h2: did not work. This has been
3220 fixed. Similarly, if a system filter added multiple headers in this way,
3221 the routers could not see them.
3222
322320. Expanded the error message when iplsearch is called with an invalid key to
3224 suggest using net-iplsearch in a host list.
3225
322621. When running tests using -bh, any delays imposed by "delay" modifiers in
3227 ACLs are no longer actually imposed (and a message to that effect is
3228 output).
3229
323022. If a "gecos" field in a passwd entry contained escaped characters, in
3231 particular, if it contained a \" sequence, Exim got it wrong when building
3232 a From: or a Sender: header from that name. A second bug also caused
3233 incorrect handling when an unquoted " was present following a character
3234 that needed quoting.
3235
323623. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3237 was not being matched caselessly.
3238
323924. Arranged for all hyphens in the exim.8 source to be escaped with
3240 backslashes.
3241
324225. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3243 properly. Recipient callout cache records were still being keyed to include
3244 the sender, even when use_sender was set false. This led to far more
3245 callouts that were necessary. The sender is no longer included in the key
3246 when use_sender is false.
3247
324826. Added "control = submission" modifier to ACLs.
3249
325027. Added the ${base62d: operator to decode base 62 numbers.
3251
325228. dnsdb lookups can now access SRV records.
3253
325429. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3255 the configuration file.
3256
325730. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3258 (-v) mode. This makes the output for a verbose queue run more intelligible.
3259
326031. Added a use_postmaster feature to recipient callouts.
3261
326232. Added the $body_zerocount variable, containing the number of binary zero
3263 bytes in the message body.
3264
326533. The time of last modification of the "new" subdirectory is now used as the
3266 "mailbox time last read" when there is a quota error for a maildir
3267 delivery.
3268
326934. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3270
327135. Added +ignore_unknown as a special item in host lists.
3272
327336. Code for decoding IPv6 addresses in host lists is now included, even if
3274 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3275 address was recognized as an IP address, but was then not correctly decoded
3276 into binary, causing unexpected and incorrect effects when compared with
3277 another IP address.
3278
3279
3280Exim version 4.34
3281-----------------
3282
3283 1. Very minor rewording of debugging text in manualroute to say "list of
3284 hosts" instead of "hostlist".
3285
3286 2. If verify=header_syntax was set, and a header line with an unqualified
3287 address (no domain) and a large number of spaces between the end of the
3288 name and the colon was received, the reception process suffered a buffer
3289 overflow, and (when I tested it) crashed. This was caused by some obsolete
3290 code that should have been removed. The fix is to remove it!
3291
3292 3. When running in the test harness, delay a bit after writing a bounce
3293 message to get a bit more predictability in the log output.
3294
3295 4. Added a call to search_tidyup() just before forking a reception process. In
3296 theory, someone could use a lookup in the expansion of smtp_accept_max_
3297 per_host which, without the tidyup, could leave open a database connection.
3298
3299 5. Added the variables $recipient_data and $sender_data which get set from a
3300 lookup success in an ACL "recipients" or "senders" condition, or a router
3301 "senders" option, similar to $domain_data and $local_part_data.
3302
3303 6. Moved the writing of debug_print from before to after the "senders" test
3304 for routers.
3305
3306 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3307 problems for message scanning, either using a data ACL, or using
3308 local_scan() because the Received: header was not generated till after they
3309 were called (in order to set the time as the time of reception completion).
3310 I have revised the way this works. The header is now generated after the
3311 body is received, but before the ACL or local_scan() are called. After they
3312 are run, the timestamp in the header is updated.
3313
3314
3315Exim version 4.33
3316-----------------
3317
3318 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3319 before starting a queue runner without re-exec. This happened only when
3320 deliver_drop_privilege was set or when the Exim user was set to root. The
3321 effect of the bug was that timeouts during subsequent deliveries caused
3322 crashes instead of being properly handled. The handler is now left at its
3323 default (and expected) setting.
3324
3325 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3326 message, again when deliver_drop_privilege is set or Exim is run as root.
3327 The bug described in (1) was not present in this case, but the tidying up
3328 of the other signals was missing. I have made the two cases consistent.
3329
3330 3. The ignore_target_hosts setting on a manualroute router was being ignored
3331 for hosts that were looked up using the /MX notation.
3332
3333 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3334 in domain lists.
3335
3336 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3337 operated on the sender address. After changing the $sender_address to <>
3338 for the sender address verify, Exim was re-instated it as the original
3339 (before rewriting) address, but remembering that it had rewritten it, so it
3340 wasn't rewriting it again. This bug also had the effect of breaking the
3341 sender address verification caching when the sender address was rewritten.
3342
3343 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3344 This has been changed so that if the ip literal address matches
3345 ignore_target_hosts, the router declines.
3346
3347 7. Added expansion conditions match_domain, match_address, and match_local_
3348 part (NOT match_host).
3349
3350 8. The placeholder for the Received: header didn't have a length field set.
3351
3352 9. Added code to Exim itself and to exim_lock to test for a specific race
3353 condition that could lead to file corruption when using MBX delivery. The
3354 issue is with the lockfile that is created in /tmp. If this file is removed
3355 after a process has opened it but before that process has acquired a lock,
3356 there is the potential for a second process to recreate the file and also
3357 acquire a lock. This could lead to two Exim processes writing to the file
3358 at the same time. The added code performs the same test as UW imapd; it
3359 checks after acquiring the lock that its file descriptor still refers to
3360 the same named file.
3361
336210. The buffer for building added header lines was of fixed size, 8192 bytes.
3363 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3364 when Exim is built.
3365
336611. Added the smtp_active_hostname option. If used, this will typically be made
3367 to depend on the incoming interface address. Because $interface_address is
3368 not set up until the daemon has forked a reception process, error responses
3369 that can happen earlier (such as "too many connections") no longer contain
3370 a host name.
3371
337212. If an expansion in a condition on a "warn" statement fails because a lookup
3373 defers, the "warn" statement is abandoned, and the next ACL statement is
3374 processed. Previously this caused the whole ACL to be aborted.
3375
337613. Added the iplsearch lookup type.
3377
337814. Added ident_timeout as a log selector.
3379
338015. Added tls_certificate_verified as a log selector.
3381
338216. Added a global option tls_require_ciphers (compare the smtp transport
3383 option of the same name). This controls incoming TLS connections.
3384
338517. I finally figured out how to make tls_require_ciphers do a similar thing
3386 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3387 before starting the TLS session.
3388
338918. Tabs are now shown as \t in -bP output.
3390
339119. If the log selector return_path_on_delivery was set, Exim crashed when
3392 bouncing a message because it had too many Received: header lines.
3393
339420. If two routers both had headers_remove settings, and the first one included
3395 a superfluous trailing colon, the final name in the first list and the
3396 first name in the second list were incorrectly joined into one item (with a
3397 colon in the middle).
3398
3399
3400Exim version 4.32
3401-----------------
3402
3403 1. Added -C and -D options to the exinext utility, mainly to make it easier
3404 to include in the automated testing, but these could be helpful when
3405 multiple configurations are in use.
3406
3407 2. The exinext utility was not formatting the output nicely when there was
3408 an alternate port involved in the retry record key, nor when there was a
3409 message id as well (for retries that were specific to a specific message
3410 and a specific host). It was also confused by IPv6 addresses, because of
3411 the additional colons they contain. I have fixed the IPv4 problem, and
3412 patched it up to do a reasonable job for IPv6.
3413
3414 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3415 delivery, the log line now contains "pipelined" if PIPELINING was used.
3416
3417 4. An SMTP transport process used to panic and die if the bind() call to set
3418 an explicit outgoing interface failed. This has been changed; it is now
3419 treated in the same way as a connect() failure.
3420
3421 5. A reference to $sender_host_name in the part of a conditional expansion
3422 that was being skipped was still causing a DNS lookup. This no longer
3423 occurs.
3424
3425 6. The def: expansion condition was not recognizing references to header lines
3426 that used bh_ and bheader_.
3427
3428 7. Added the _cache feature to named lists.
3429
3430 8. The code for checking quota_filecount in the appendfile transport was
3431 allowing one more file than it should have been.
3432
3433 9. For compatibility with Sendmail, the command line option
3434
3435 -prval:sval
3436
3437 is equivalent to
3438
3439 -oMr rval -oMs sval
3440
3441 and sets the incoming protocol and host name (for trusted callers). The
3442 host name and its colon can be omitted when only the protocol is to be set.
3443 Note the Exim already has two private options, -pd and -ps, that refer to
3444 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3445 "s", but I don't think that's a major issue.
3446
344710. A number of refactoring changes to the code, none of which should affect
3448 Exim's behaviour:
3449
3450 (a) The number of logging options was getting close to filling up the
3451 32-bit word that was used as a bit map. I have split them into two classes:
3452 those that are passed in the argument to log_write(), and those that are
3453 only ever tested independently outside of that function. These are now in
3454 separate 32-bit words, so there is plenty of room for expansion again.
3455 There is no change in the user interface or the logging behaviour.
3456
3457 (b) When building, for example, log lines, the code previously used a
3458 macro that called string_cat() twice, in order to add two strings. This is
3459 not really sufficiently general. Furthermore, there was one instance where
3460 it was actually wrong because one of the argument was used twice, and in
3461 one call a function was used. (As it happened, calling the function twice
3462 did not affect the overall behaviour.) The macro has been replaced by a
3463 function that can join an arbitrary number of extra strings onto a growing
3464 string.
3465
3466 (c) The code for expansion conditions now uses a table and a binary chop
3467 instead of a serial search (which was left over from when there were very
3468 few conditions). Also, it now recognizes conditions like "pam" even when
3469 the relevant support is not compiled in: a suitably worded error message is
3470 given if an attempt is made to use such a condition.
3471
347211. Added ${time_interval:xxxxx}.
3473
347412. A bug was causing one of the ddress fields not to be passed back correctly
3475 from remote delivery subprocesses. The field in question was not being
3476 subsequently used, so this caused to problems in practice.
3477
347813. Added new log selectors queue_time and deliver_time.
3479
348014. Might have fixed a bug in maildirsizefile handling that threw up
3481 "unexpected character" debug warnings, and recalculated the data
3482 unnecessarily. In any case, I expanded the warning message to give more
3483 information.
3484
348515. Added the message "Restricted characters in address" to the statements in
3486 the default ACL that block characters like @ and % in local parts.
3487
348816. Change 71 for release 4.31 proved to be much less benign that I imagined.
3489 Three changes have been made:
3490
3491 (a) There was a serious bug; a negative response to MAIL caused the whole
3492 recipient domain to be cached as invalid, thereby blocking all messages
3493 to all local parts at the same domain, from all senders. This bug has
3494 been fixed. The domain is no longer cached after a negative response to
3495 MAIL if the sender used is not empty.
3496
3497 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3498 been restored.
3499
3500 (c) A new callout option, "use_sender" has been added for people who want
3501 the modified behaviour.
3502
3503
3504Exim version 4.31
3505-----------------
3506
3507 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3508 Larry Rosenman.
3509
3510 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3511 indeed breaks things for older releases.
3512
3513 3. Added additional logging to the case where there is a problem reading data
3514 from a filter that is running in a subprocess using a pipe, in order to
3515 try to track down a specific problem.
3516
3517 4. Testing facility fudge: when running in the test harness and attempting
3518 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3519 getting "No route to host". Convert this to a timeout.
3520
3521 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3522 warning.
3523
3524 6. Some OS don't have socklen_t but use size_t instead. This affects the
3525 fifth argument of getsockopt() amongst other things. This is now
3526 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3527 can be set for individual OS. I have set it for SunOS5, OSF1, and
3528 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3529 some earlier ones do not.
3530
3531 7. Change 4.30/15 was not doing the test caselessly.
3532
3533 8. The standard form for an IPv6 address literal was being rejected by address
3534 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3535 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3536 this, as well as the form without the "IPv6" on the front (but only when
3537 address literals are enabled, of course).
3538
3539 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3540
354110. Exim crashed if a message with an empty sender address specified by -f
3542 encountered a router with an errors_to setting. This could be provoked only
3543 by a command such as
3544
3545 exim -f "" ...
3546
3547 where an empty string was supplied; "<>" did not hit this bug.
3548
354911. Installed PCRE release 4.5.
3550
355112. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3552 remained set. It is now erased.
3553
355413. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3555 times from message ids (which are base 36 rather than the normal 62).
3556