Guard against buffer overflow in moan_check_errorcopy().
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
ce9f225c 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.528 2007/08/29 13:58:57 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
eb4c0de6
PH
6Exim version 4.68
7-----------------
8
9PH/01 Another patch from the Sieve maintainer.
10
6a3bceb1
PH
11PH/02 When an IPv6 address is converted to a string for single-key lookup
12 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
13 dots are used instead of colons so that keys in lsearch files need not
14 contain colons. This was done some time before quoting was made available
15 in lsearch files. However, iplsearch files do require colons in IPv6 keys
16 (notated using the quote facility) so as to distinguish them from IPv4
17 keys. This meant that lookups for IP addresses in host lists did not work
18 for iplsearch lookups.
19
20 This has been fixed by arranging for IPv6 addresses to be expressed with
21 colons if the lookup type is iplsearch. This is not incompatible, because
22 previously such lookups could never work.
23
24 The situation is now rather anomolous, since one *can* have colons in
25 ordinary lsearch keys. However, making the change in all cases is
26 incompatible and would probably break a number of configurations.
27
2e30fa9d
TK
28TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
29 version.
30
0806a9c5
MH
31MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
32 conversion specification without a maximum field width, thereby enabling
33 a rogue spamd server to cause a buffer overflow. While nobody in their
34 right mind would setup Exim to query an untrusted spamd server, an
35 attacker that gains access to a server running spamd could potentially
36 exploit this vulnerability to run arbitrary code as the Exim user.
37
ae276964
TK
38TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
39 $primary_hostname instead of what libspf2 thinks the hosts name is.
40
0f2cbd1b
MH
41MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
42 a directory entry by the name of the lookup key. Previously, if a
43 symlink pointed to a non-existing file or a file in a directory that
44 Exim lacked permissions to read, a lookup for a key matching that
45 symlink would fail. Now it is enough that a matching directory entry
46 exists, symlink or not. (Bugzilla 503.)
47
2b85bce7
PH
48PH/03 The body_linecount and body_zerocount variables are now exported in the
49 local_scan API.
50
93655c46
PH
51PH/04 Added the $dnslist_matched variable.
52
6c512171
PH
53PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
54 This means they are set thereafter only if the connection becomes
55 encrypted.
56
57PH/06 Added the client_condition to authenticators so that some can be skipped
58 by clients under certain conditions.
59
aa6dc513
PH
60PH/07 The error message for a badly-placed control=no_multiline_responses left
61 "_responses" off the end of the name.
62
a96603a0
PH
63PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
64
8f240103
PH
65PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
66 (without spaces) instead of just copying the configuration text.
67
68PH/10 Added the /noupdate option to the ratelimit ACL condition.
69
d677b2f2
PH
70PH/11 Added $max_received_linelength.
71
d52120f2
PH
72PH/12 Added +ignore_defer and +include_defer to host lists.
73
64f2600a
PH
74PH/13 Installed PCRE version 7.2. This needed some changes because of the new
75 way in which PCRE > 7.0 is built.
76
8669f003
PH
77PH/14 Implemented queue_only_load_latch.
78
a4dc33a8
PH
79PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
80 MAIL command. The effect was to mangle the value on 64-bit systems.
81
d6a60c0f
PH
82PH/16 Another patch from the Sieve maintainer.
83
8f128379
PH
84PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
85
8932dffe
PH
86PH/18 If a system quota error occurred while trying to create the file for
87 a maildir delivery, the message "Mailbox is full" was not appended to the
88 bounce if the delivery eventually timed out. Change 4.67/27 below applied
89 only to a quota excession during the actual writing of the file.
d6a60c0f 90
ddea74fa 91PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
92 characters?) which causes problems in log lines. The DN values are now
93 passed through string_printing() before being added to log lines.
94
ddea74fa 95PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
96 and InterBase are left for another time.)
97
ddea74fa
PH
98PH/21 Added message_body_newlines option.
99
ce9f225c
PH
100PH/22 Guard against possible overflow in moan_check_errorcopy().
101
eb4c0de6 102
b4ed4da0
PH
103Exim version 4.67
104-----------------
105
22ad45c9
MH
106MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
107 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
108 Jan Srzednicki.
109
b4ed4da0
PH
110PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
111 issue a MAIL command.
112
431b7361
PH
113PH/02 In an ACL statement such as
114
115 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
116
117 if a client was not listed at all, or was listed with a value other than
118 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
119 the condition was not true (as it should be), so access was not denied.
120 The bug was that the ! inversion was incorrectly passed on to the second
121 item. This has been fixed.
122
123PH/03 Added additional dnslists conditions == and =& which are different from
124 = and & when the dns lookup returns more than one IP address.
125
83da1223
PH
126PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
127 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
128
54fc8428
PH
129PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
130 FSYNC, which compiles an option called disable_fsync that allows for
131 bypassing fsync(). The documentation is heavily laced with warnings.
132
34c5e8dd
SC
133SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
134
bbe15da8
PH
135PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
136 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
137 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
138 including adding "make clean"; (3) Added -fPIC when compiling the test
139 dynamically loaded module, to get rid of a warning.
140
0e8a9471
MH
141MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
142 message fails, move_frozen_messages = true and ignore_bounce_errors_after
143 = 0s. The bug is otherwise harmless.
144
f0872424
PH
145PH/07 There was a bug in the dovecot authenticator such that the value of
146 $auth1 could be overwritten, and so not correctly preserved, after a
147 successful authentication. This usually meant that the value preserved by
148 the server_setid option was incorrect.
149
b01dd148
PH
150PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
151
6bf342e1
PH
152PH/09 Installed PCRE release 7.0.
153
273f34d0
PH
154PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
155 run for batched SMTP input. It is now run at the start of every message
156 in the batch. While fixing this I discovered that the process information
157 (output by running exiwhat) was not always getting set for -bs and -bS
158 input. This is fixed, and it now also says "batched" for BSMTP.
159
cf8b11a5
PH
160PH/11 Added control=no_pipelining.
161
41c7c167
PH
162PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
163 patch, slightly modified), and move the expansion of helo_data till after
164 the connection is made in the smtp transport (so it can use these
165 values).
166
9c57cbc0
PH
167PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
168
f3f065bb
PH
169PH/14 Added log_selector = +pid.
170
047bdd8c
PH
171PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
172
0ce9abe6
PH
173PH/16 Add ${if forany and ${if forall.
174
0e22dfd1
PH
175PH/17 Added dsn_from option to vary the From: line in DSNs.
176
4c590bd1
PH
177PH/18 Flush SMTP output before performing a callout, unless control =
178 no_callout_flush is set.
179
09945f1e
PH
180PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
181 was true (the default) a successful delivery failed to delete the retry
182 item, thus causing premature timeout of the address. The bug is now
183 fixed.
184
c51b8e75
PH
185PH/20 Added hosts_avoid_pipelining to the smtp transport.
186
e28326d8
PH
187PH/21 Long custom messages for fakedefer and fakereject are now split up
188 into multiline reponses in the same way that messages for "deny" and
189 other ACL rejections are.
190
75b1493f
PH
191PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
192 with slight modification.
193
7c5214ec
PH
194PH/23 Applied sieve patches from the maintainer "tracking the latest notify
195 draft, changing the syntax and factoring some duplicate code".
196
4311097e
PH
197PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
198 for deliveries of the second and subsequent messages over the same SMTP
199 connection.
200
29f89cad
PH
201PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
202 ${reduce, with only minor "tidies".
203
5e687460
SC
204SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
205
c3611384
PH
206PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
207 expansion side effects.
208
5a11a7b4
PH
209PH/27 When a message times out after an over-quota error from an Exim-imposed
210 quota, the bounce message says "mailbox is full". This message was not
211 being given when it was a system quota that was exceeded. It now should
212 be the same.
213
0e20aff9
MH
214MH/03 Made $recipients available in local_scan(). local_scan() already has
215 better access to the recipient list through recipients_list[], but
216 $recipients can be useful in postmaster-provided expansion strings.
217
ca86f471
PH
218PH/28 The $smtp_command and $smtp_command_argument variables were not correct
219 in the case of a MAIL command with additional options following the
220 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
221 were accidentally chopped off.
222
a14e5636
PH
223PH/29 SMTP synchronization checks are implemented when a command is read -
224 there is a check that no more input is waiting when there shouldn't be
225 any. However, for some commands, a delay in an ACL can mean that it is
226 some time before the response is written. In this time, more input might
227 arrive, invalidly. So now there are extra checks after an ACL has run for
228 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
229 pipelining has not been advertised.
230
ec95d1a6
PH
231PH/30 MH's patch to allow iscntrl() characters to be list separators.
232
42855d71
PH
233PH/31 Unlike :fail:, a custom message specified with :defer: was not being
234 returned in the SMTP response when smtp_return_error_details was false.
235 This has been fixed.
236
57c2c631
PH
237PH/32 Change the Dovecot authenticator to use read() and write() on the socket
238 instead of the C I/O that was originally supplied, because problems were
239 reported on Solaris.
240
58c01c94
PH
241PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
242 Exim which did not show up earlier: it was assuming that a call to
243 SSL_CTX_set_info_callback() might give an error value. In fact, there is
244 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
245 was a macro that became an assignment, so it seemed to work. This has
246 changed to a proper function call with a void return, hence the compile
247 error. Exim's code has been fixed.
248
dee5a20a
PH
249PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
250 cpus.
251
d2ee6114
PH
252PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
253
b2d5182b
PH
254PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
255
79749a79
PH
256PH/37 If a message is not accepted after it has had an id assigned (e.g.
257 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
258 "Completed" line in the log. When some messages of this type were
259 selected by exigrep, they were listed as "not completed". Others were
260 picked up by some special patterns. I have improved the selection
261 criteria to be more general.
79749a79 262
c456d9bb
PH
263PH/38 The host_find_failed option in the manualroute router can now be set
264 to "ignore", to completely ignore a host whose IP address cannot be
265 found. If all hosts are ignored, the behaviour is controlled by the new
266 host_all_ignored option.
267
cd9868ec
PH
268PH/39 In a list of hosts for manualroute, if one item (either because of multi-
269 homing or because of multiple MX records with /mx) generated more than
270 one IP address, and the following item turned out to be the local host,
271 all the secondary addresses of the first item were incorrectly removed
272 from the list, along with the local host and any following hosts (which
273 is what is supposed to happen).
274
ebeaf996
PH
275PH/40 When Exim receives a message, it writes the login name, uid, and gid of
276 whoever called Exim into the -H file. In the case of the daemon it was
277 behaving confusingly. When first started, it used values for whoever
278 started the daemon, but after a SIGHUP it used the Exim user (because it
279 calls itself on a restart). I have changed the code so that it now always
280 uses the Exim user.
281
2679d413
PH
282PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
283 message are rejected with the same error (e.g. no authentication or bad
284 sender address), and a DATA command is nevertheless sent (as can happen
285 with PIPELINING or a stupid MUA), the error message that was given to the
286 RCPT commands is included in the rejection of the DATA command. This is
287 intended to be helpful for MUAs that show only the final error to their
288 users.
289
84024b72
PH
290PH/42 Another patch from the Sieve maintainer.
291
8005d38e
SC
292SC/02 Eximstats - Differentiate between permanent and temporary rejects.
293 Eximstats - Fixed some broken HTML links and added missing column headers
294 (Jez Hancock).
295 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
296 columns for Rejects, Temp Rejects, Ham, and Spam rows.
297
3298c6c6
SC
298SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
299
a43a27c5
PH
300PH/43 Yet another patch from the Sieve maintainer.
301
58eb016e 302PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
303 the response to the final '.' that terminates a message, but only in the
304 case where the client has not sent further data following the '.'
305 (unfortunately, this is allowed). However, in many cases there won't be
306 any further data because there won't be any more messages to send. A call
307 to select() can be used: if it shows that the input is "ready", there is
308 either input waiting, or the socket has been closed. An attempt to read
309 the next input character can distinguish the two cases. Previously, Exim
58eb016e 310 would have sent an OK response which the client would never have see.
563b63fa
PH
311 This could lead to message repetition. This fix should cure that, at
312 least in a lot of common cases.
58eb016e 313
b43a74ea
PH
314PH/45 Do not advertise STARTTLS in response to HELP unless it would be
315 advertised in response to EHLO.
316
b4ed4da0 317
5dd1517f
PH
318Exim version 4.66
319-----------------
320
321PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
322 fixed by 4.65/MH/01 (is this a record?) are fixed:
323
324 (i) An empty string was always treated as zero by the numeric comparison
325 operators. This behaviour has been restored.
326
327 (ii) It is documented that the numeric comparison operators always treat
328 their arguments as decimal numbers. This was broken in that numbers
329 starting with 0 were being interpreted as octal.
330
331 While fixing these problems I realized that there was another issue that
332 hadn't been noticed. Values of message_size_limit (both the global option
333 and the transport option) were treated as octal if they started with 0.
334 The documentation was vague. These values are now always treated as
335 decimal, and I will make that clear in the documentation.
336
337
93cfa765
TK
338Exim version 4.65
339-----------------
340
341TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
342 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
343 versions. (#438)
344
d6066548
MH
345MH/01 Don't check that the operands of numeric comparison operators are
346 integers when their expansion is in "skipping" mode (fixes bug
347 introduced by 4.64-PH/07).
348
4362ff0d
PH
349PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
350 child addresses, Exim now panics and dies. Previously, because the count
351 is held in a short int, deliveries were likely to be lost. As such a
352 large number of recipients for a single message is ridiculous
353 (performance will be very, very poor), I have chosen to impose a limit
354 rather than extend the field.
355
93cfa765 356
944e9e9c
TF
357Exim version 4.64
358-----------------
aa41d2de 359
21d74bd9
TK
360TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
361 leftover -K file (the existence of which was triggered by #402).
362 While we were at it, introduced process PID as part of the -K
363 filename. This should rule out race conditions when creating
364 these files.
365
366TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
367 processing considerably. Previous code took too long for large mails,
368 triggering a timeout which in turn triggers #401.
369
370TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
371 in the DK code in transports.c. sendfile() is not really portable,
372 hence the _LINUX specificness.
944e9e9c
TF
373
374TF/01 In the add_headers option to the mail command in an Exim filter,
375 there was a bug that Exim would claim a syntax error in any
376 header after the first one which had an odd number of characters
377 in the field name.
378
2b1c6e3a
PH
379PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
380 callout verification, Exim cached a "reject" for the entire domain. This
381 is correct for most verifications, but it is not correct for a recipient
382 verification with use_sender or use_postmaster set, because in that case
383 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
384 case of MAIL FROM:<> rejection from other early rejections (e.g.
385 rejection of HELO). When verifying a recipient using a non-null MAIL
386 address, the cache is ignored if it shows MAIL FROM:<> rejection.
387 Whatever the result of the callout, the value of the domain cache is
388 left unchanged (for any other kind of callout, getting as far as trying
389 RCPT means that the domain itself is ok).
390
1f872c80
PH
391PH/02 Tidied a number of unused variable and signed/unsigned warnings that
392 gcc 4.1.1 threw up.
393
394PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
395 manifest itself as EPIPE rather than ECONNECT. When tidying away a
396 session, the daemon ignores ECONNECT errors and logs others; it now
397 ignores EPIPE as well.
398
d203e649
PH
399PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
400 (quoted-printable decoding).
401
cc2ed8f7 402PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 403 later the small subsequent patch to fix an introduced bug.
f951fd57 404
ddfcd446
PH
405PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
406
d45b1de8
PH
407PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
408
409PH/08 An error is now given if message_size_limit is specified negative.
410
38a0a95f 411PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 412 to be given (somewhat) arbitrary names.
38a0a95f 413
a2405d83
JJ
414JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
415 in 4.64-PH/09.
416
417JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
418 miscellaneous code fixes
419
6ea85e9a
PH
420PH/10 Added the log_reject_target ACL modifier to specify where to log
421 rejections.
422
26da7e20
PH
423PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
424 hostname. This is wrong, because it relates to the incoming message (and
425 probably the interface on which it is arriving) and not to the outgoing
426 callout (which could be using a different interface). This has been
427 changed to use the value of the helo_data option from the smtp transport
428 instead - this is what is used when a message is actually being sent. If
429 there is no remote transport (possible with a router that sets up host
430 addresses), $smtp_active_hostname is used.
6ea85e9a 431
14aa5a05 432PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 433 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
434 (a) The code assumed that strncpy() returns a negative number on buffer
435 overflow, which isn't the case. Replaced with Exim's string_format()
436 function.
437 (b) There were several signed/unsigned issues. I just did the minimum
438 hacking in of casts. There is scope for a larger refactoring.
439 (c) The code used strcasecmp() which is not a standard C function.
440 Replaced with Exim's strcmpic() function.
441 (d) The code set only $1; it now sets $auth1 as well.
442 (e) A simple test gave the error "authentication client didn't specify
443 service in request". It would seem that Dovecot has changed its
444 interface. Fortunately there's a specification; I followed it and
445 changed what the client sends and it appears to be working now.
446
ff75a1f7
PH
447PH/13 Added $message_headers_raw to provide the headers without RFC 2047
448 decoding.
449
e6f6568e
PH
450PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
451 address A is aliased to B and C, where B exists and C does not. Without
452 -v the output is "A verified" because verification stops after a
453 successful redirection if more than one address is generated. However,
454 with -v the child addresses are also verified. Exim was outputting "A
455 failed to verify" and then showing the successful verification for C,
456 with its parentage. It now outputs "B failed to verify", showing B's
457 parentage before showing the successful verification of C.
458
d6f6e0dc
PH
459PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
460 look up a TXT record in a specific list after matching in a combined
461 list.
462
322050c2
PH
463PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
464 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
465 they consult the DNS. I had assumed they would set it the way they
466 wanted; and indeed my experiments on Linux seem to show that in some
467 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
468 To be on the safe side, however, I have now made the interface to
469 host_find_byname() similar to host_find_bydns(), with an argument
470 containing the DNS resolver options. The host_find_byname() function now
471 sets these options at its start, just as host_find_bydns() does. The smtp
472 transport options dns_qualify_single and dns_search_parents are passed to
473 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
474 of host_find_byname() use the default settings of RES_DEFNAMES
475 (qualify_single) but not RES_DNSRCH (search_parents).
476
08955dd3
PH
477PH/17 Applied (a modified version of) Nico Erfurth's patch to make
478 spool_read_header() do less string testing, by means of a preliminary
479 switch on the second character of optional "-foo" lines. (This is
480 overdue, caused by the large number of possibilities that now exist.
481 Originally there were few.) While I was there, I also converted the
482 str(n)cmp tests so they don't re-test the leading "-" and the first
483 character, in the hope this might squeeze out yet more improvement.
484
1eccaa59
PH
485PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
486 flag allowing group syntax was set by the header_syntax check but not
487 turned off, possible causing trouble later; (2) The flag was not being
488 set at all for the header_verify test, causing "group"-style headers to
489 be rejected. I have now set it in this case, and also caused header_
490 verify to ignore an empty address taken from a group. While doing this, I
491 came across some other cases where the code for allowing group syntax
492 while scanning a header line wasn't quite right (mostly, not resetting
493 the flag correctly in the right place). These bugs could have caused
494 trouble for malformed header lines. I hope it is now all correct.
495
602e59e5
PH
496PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
497 with the "reply" argument non-NULL. The code, however (which originally
498 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
499 but it didn't always do it. This confused somebody who was copying the
500 code for some other use. I have removed all the tests.
501
411ef850
PH
502PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
503 feature that was used to support insecure browsers during the U.S. crypto
504 embargo. It requires special client support, and Exim is probably the
505 only MTA that supported it -- and would never use it because real RSA is
506 always available. This code has been removed, because it had the bad
507 effect of slowing Exim down by computing (never used) parameters for the
508 RSA_EXPORT functionality.
509
7befa435
PH
510PH/21 On the advice of Timo Sirainen, added a check to the dovecot
511 authenticator to fail if there's a tab character in the incoming data
512 (there should never be unless someone is messing about, as it's supposed
513 to be base64-encoded). Also added, on Timo's advice, the "secured" option
514 if the connection is using TLS or if the remote IP is the same as the
515 local IP, and the "valid-client-cert option" if a client certificate has
516 been verified.
517
48da4259 518PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
519 authenticators. This can be used for authorization after authentication
520 succeeds. (In the case of plaintext, it servers for both authentication
521 and authorization.)
522
48da4259
PH
523PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
524 if any retry times were supplied.
525
d1d5595c
PH
526PH/24 Exim crashed if verify=helo was activated during an incoming -bs
527 connection, where there is no client IP address to check. In this
528 situation, the verify now always succeeds.
529
0ef732d9
PH
530PH/25 Applied John Jetmore's -Mset patch.
531
328895cc
PH
532PH/26 Added -bem to be like -Mset, but loading a message from a file.
533
fd700877
PH
534PH/27 In a string expansion for a processed (not raw) header when multiple
535 headers of the same name were present, leading whitespace was being
536 removed from all of them, but trailing whitespace was being removed only
537 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
538 before concatenation. Completely empty headers in a concatenation (as
539 before) are ignored.
fd700877 540
8dce1a6f
PH
541PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
542 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
543
17af4a17
PH
544PH/29 [Removed. This was a change that I later backed out, and forgot to
545 correct the ChangeLog entry (that I had efficiently created) before
546 committing the later change.]
f6c332bd
PH
547
548PH/30 Exim was sometimes attempting to deliver messages that had suffered
549 address errors (4xx response to RCPT) over the same connection as other
550 messages routed to the same hosts. Such deliveries are always "forced",
551 so retry times are not inspected. This resulted in far too many retries
552 for the affected addresses. The effect occurred only when there were more
553 hosts than the hosts_max_try setting in the smtp transport when it had
554 the 4xx errors. Those hosts that it had tried were not added to the list
555 of hosts for which the message was waiting, so if all were tried, there
556 was no problem. Two fixes have been applied:
557
558 (i) If there are any address or message errors in an SMTP delivery, none
559 of the hosts (tried or untried) are now added to the list of hosts
560 for which the message is waiting, so the message should not be a
561 candidate for sending over the same connection that was used for a
562 successful delivery of some other message. This seems entirely
563 reasonable: after all the message is NOT "waiting for some host".
564 This is so "obvious" that I'm not sure why it wasn't done
565 previously. Hope I haven't missed anything, but it can't do any
566 harm, as the worst effect is to miss an optimization.
567
568 (ii) If, despite (i), such a delivery is accidentally attempted, the
569 routing retry time is respected, so at least it doesn't keep
570 hammering the server.
571
c1114884
PH
572PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
573 in ${readsocket because some servers need this prod.
574
7a0743eb
PH
575PH/32 Added some extra debug output when updating a wait-xxx database.
576
0d85fa3f
PH
577PH/33 The hint "could be header name not terminated by colon", which has been
578 given for certain expansion errors for a long time, was not being given
579 for the ${if def:h_colon_omitted{... case.
580
1bf43b78
PH
581PH/34 The spec says: "With one important exception, whenever a domain list is
582 being scanned, $domain contains the subject domain." There was at least
583 one case where this was not true.
584
520de300
PH
585PH/35 The error "getsockname() failed: connection reset by peer" was being
586 written to the panic log as well as the main log, but it isn't really
587 panic-worthy as it just means the connection died rather early on. I have
588 removed the panic log writing for the ECONNRESET error when getsockname()
589 fails.
590
48c7f9e2
PH
591PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
592 runs only) independently of the message's sender address. This meant
593 that, if the 4xx error was in fact related to the sender, a different
594 message to the same recipient with a different sender could confuse
595 things. In particualar, this can happen when sending to a greylisting
596 server, but other circumstances could also provoke similar problems.
597 I have changed the default so that the retry time for these errors is now
598 based a combination of the sender and recipient addresses. This change
599 can be overridden by setting address_retry_include_sender=false in the
600 smtp transport.
601
99ea1c86
PH
602PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
603 remote server are returned as part of bounce messages. This was not
604 happening for LMTP over a pipe (the lmtp transport), but now it is the
605 same for both kinds of LMTP.
606
a2042e78
PH
607PH/38 Despite being documented as not happening, Exim was rewriting addresses
608 in header lines that were in fact CNAMEs. This is no longer the case.
609
4fbcfc2e
PH
610PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
611 and queue runs started by the daemon processed all messages. This has
612 been fixed so that -R and -S can now usefully be given with -q<time>.
613
aa41d2de
PH
614PH/40 Import PCRE release 6.7 (fixes some bugs).
615
af561417
PH
616PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
617
3cc66b45
PH
618PH/42 Give an error if -q is specified more than once.
619
194cc0e4
PH
620PH/43 Renamed the variables $interface_address and $interface_port as
621 $received_ip_address and $received_port, to make it clear that these
622 values apply to message reception, and not to the outgoing interface when
623 a message is delivered. (The old names remain recognized, of course.)
624
a401ddaa
PH
625PH/44 There was no timeout on the connect() call when using a Unix domain
626 socket in the ${readsocket expansion. There now is.
627
4e88a19f
PH
628PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
629 be meaningful with "accept".
630
d7d7b289
SC
631SC/01 Eximstats V1.43
632 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
633
634SC/02 Eximstats V1.44
635 Use a glob alias rather than an array ref in the generated
636 parser. This improves both readability and performance.
637
638SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
639 Collect SpamAssassin and rejection statistics.
640 Don't display local sender or destination tables unless
641 there is data to show.
642 Added average volumes into the top table text output.
643
644SC/04 Eximstats V1.46
645 Collect data on the number of addresses (recipients)
646 as well as the number of messages.
647
648SC/05 Eximstats V1.47
649 Added 'Message too big' to the list of mail rejection
650 reasons (thanks to Marco Gaiarin).
651
652SC/06 Eximstats V1.48
653 Mainlog lines which have GMT offsets and are too short to
654 have a flag are now skipped.
655
656SC/07 Eximstats V1.49 (Alain Williams)
657 Added the -emptyok flag.
658
659SC/08 Eximstats V1.50
660 Fixes for obtaining the IP address from reject messages.
661
0ea2a468
JJ
662JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
663 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
664 whitesspace changes from 4.64-PH/27
665
666JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
667 match 4.64-PH/13
668
669JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
670 are found, allow negative numbers in numeric criteria)
671
672JJ/06 exipick.20061117.2, added new $message_body_missing variable
673
674JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
675 to match changes made in 4.64-PH/43
676
8a10f5a4
PH
677PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
678
30e18802
PH
679PH/47 Put in an explicit test for a DNS lookup of an address record where the
680 "domain" is actually an IP address, and force a failure. This locks out
681 those revolvers/nameservers that support "A-for-A" lookups, in
682 contravention of the specifications.
683
55728a4f
PH
684PH/48 When a host name was looked up from an IP address, and the subsequent
685 forward lookup of the name timed out, the host name was left in
686 $sender_host_name, contrary to the specification.
d7d7b289 687
d7837193
PH
688PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
689 restricted to single-key lookups, Exim was not diagnosing an error if
690 * or *@ was used with a query-style lookup.
691
87054a31
PH
692PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
693
ea2c01d2
MH
694MH/01 local_scan ABI version incremented to 1.1. It should have been updated
695 long ago, but noone interested enough thought of it. Let's just say that
696 the "1.1" means that there are some new functions that weren't there at
697 some point in the past.
698
e4fa6968
PH
699PH/51 Error processing for expansion failure of helo_data from an smtp
700 transport during callout processing was broken.
701
56f5d9bd
PH
702PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
703 tested/used via the -bh/-bhc/-bs options.
704
922e1c28
PH
705PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
706 bug, fixed in subsequent PCRE releases).
707
21eb6e72
PH
708PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
709 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
710
a0540757
PH
711PH/55 Check for a ridiculously long file name in exim_dbmbuild.
712
944e9e9c 713
478be7b0
SC
714Exim version 4.63
715-----------------
716
717SC/01 Use a glob alias rather than an array ref in eximstats generated
718 parser. This improves both readability and performance.
719
720SC/02 Collect SpamAssassin and rejection statistics in eximstats.
721 Don't display local sender or destination tables in eximstats unless
722 there is data to show.
723 Added average volumes into the eximstats top table text output.
724
725SC/03 Collect data on the number of addresses (recipients) as well
726 as the number of messages in eximstats.
727
2b965a65
TF
728TF/01 Correct an error in the documentation for the redirect router. Exim
729 does (usually) call initgroups() when daemonizing.
478be7b0 730
45b91596
PH
731TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
732 with consistent privilege compared to when running as a daemon.
478be7b0 733
c59f5781
TF
734TF/03 Note in the spec that $authenticated_id is not set for local
735 submissions from trusted users.
736
90fc3069
TF
737TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
738 Thanks to Dean Brooks <dean@iglou.com> for the patch.
739
6083aca0
TF
740TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
741 by adding some example configuration directives to the default
742 configuration file. A little bit of work is required to uncomment the
743 directives and define how usernames and passwords are checked, but
744 there is now a framework to start from.
745
765b530f
PH
746PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
747 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
748 without this. I don't know how relevant this is to other LDAP libraries.
749
4e167a8c
PH
750PH/02 Add the verb name to the "unknown ACL verb" error.
751
4608d683
PH
752PH/03 Magnus Holmgren's patch for filter_prepend_home.
753
b8dc3e4a
PH
754PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
755
5418e93b
PH
756PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
757 directory not expanded when it should be if an expanded home directory
758 was set for the address (which is overridden by the transport).
759
b4a9bda2
PH
760PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
761 libradius.
762
45b91596
PH
763PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
764 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
765 because it is too late at that time, and has no effect.
766
5547e2c5
PH
767PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
768 security issue with \' (bugzilla #107). I could not use the
769 PQescapeStringConn() function, because it needs a PGconn value as one of
770 its arguments.
771
dbcef0ea
PH
772PH/08 When testing addresses using -bt, indicate those final addresses that
773 are duplicates that would not cause an additional delivery. At least one
774 person was confused, thinking that -bt output corresponded to deliveries.
775 (Suppressing duplicates isn't a good idea as you lose the information
776 about possibly different redirections that led to the duplicates.)
777
25257489
PH
778PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
779 systems where poll() doesn't work, in particular OS X.
780
c816d124
PH
781PH/10 Added more information to debugging output for retry time not reached.
782
a9ccd69a
PH
783PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
784 operations in malware.c.
785
75fa1910
PH
786PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
787 signatures.
788
a7d7aa58
PH
789PH/13 If write_rejectlog was set false when logging was sent to syslog with
790 syslog_duplication set false, log lines that would normally be written
791 both the the main log and to the reject log were not written to syslog at
792 all.
793
42119b09
PH
794PH/14 In the default configuration, change the use of "message" in ACL warn
795 statements to "add_header".
796
41609df5
PH
797PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
798 not followed by a command (e.g. "seen endif").
799
a5bd321b
PH
800PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
801 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
802 latter.
803
e85a7ad5 804PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
805 so that it is now:
806
e85a7ad5
PH
807 ${if or { \
808 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
809 { match{$h_precedence:}{(?i)bulk|list|junk} } \
810 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
811 }{no}{yes}}
812
e85a7ad5
PH
813 The Auto-Submitted: and various List- headers are standardised, whereas I
814 don't think Precedence: ever was.
5dff5817 815
d8fe1c03
PH
816PH/18 Refactored debugging code in route_finduser() to show more information,
817 in particular, the error code if getpwnam() issues one.
818
16282d2b
PH
819PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
820 This is apparently needed in addition to the PH/07 change above to avoid
821 any possible encoding problems.
822
35d40a98
PH
823PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
824 but not after initializing Perl.
825
034d99ab
PH
826PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
827 output them only if debugging. By default they are written stderr,
828 apparently, which is not desirable.
829
6ec97b1b
PH
830PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
831 queries.
832
e22ca4ac
JJ
833JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
834 --not options
835
836JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
837
33d73e3b
PH
838PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
839 authenticated or an ident call has been made. Suppress the default
840 values for $authenticated_id and $authenticated_sender (but permit -oMai
841 and -oMas) when testing with -bh.
842
9ecb03f3
PH
843PH/24 Re-jigged the order of the tests in the default configuration so that the
844 tests for valid domains and recipients precede the DNS black list and CSA
845 tests, on the grounds that those ones are more expensive.
846
084efe8d
PH
847PH/25 Exim was not testing for a space following SMTP commands such as EHLO
848 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
849 This bug exists in every version of Exim that I still have, right back to
850 0.12.
851
366fc9f0
PH
852PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
853 However, an attempt to turn on case-sensitivity in a regex key by
854 including (?-i) didn't work because the subject string was already
855 lowercased, and the effects were non-intuitive. It turns out that a
856 one-line patch can be used to allow (?-i) to work as expected.
857
c59f5781 858
c887c79e
TF
859Exim version 4.62
860-----------------
861
862TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
863 other effects) broke the use of negated acl sub-conditions.
864
1cce3af8
PH
865PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
866 patch).
867
afb3eaaf
PH
868PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
869 "Deny" causes Exim to reject the incoming connection with a 554 error.
870 Unfortunately, if there is a major crisis, such as a disk failure,
871 tcp-wrappers gives "deny", whereas what one would like would be some
872 kind of temporary error. A kludge has been added to help with this.
873 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
874 554 error is used if errno is still zero or contains ENOENT (which occurs
875 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
876 451 error is used.
877
e173618b
PH
878PH/03 Add -lutil to the default FreeBSD LIBS setting.
879
dd16e114
PH
880PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
881 errors. Otherwise a message that provokes a temporary error (when other
882 messages do not) can cause a whole host to time out.
883
f7fd3850
PH
884PH/05 Batch deliveries by appendfile and pipe transports did not work when the
885 addresses were routed directly to files or pipes from a redirect router.
886 File deliveries just didn't batch; pipe deliveries might have suffered
887 odd errors.
888
d87df92c
PH
889PH/06 A failure to get a lock for a hints database would erroneously always say
890 "Failed to get write lock", even when it was really a read lock.
891
7e9f683d
PH
892PH/07 The appendfile transport was creating MBX lock files with a fixed mode
893 of 0600. This has been changed to use the value of the lockfile_mode
894 option (which defaults to 0600).
895
bfad5236
PH
896PH/08 Applied small patch from the Sieve maintainer.
897
01c490df
PH
898PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
899 folder from quota calculations, a direct delivery into this folder messed
900 up the contents of the maildirsize file. This was because the regex was
901 used only to exclude .Trash (or whatever) when the size of the mailbox
902 was calculated. There was no check that a delivery was happening into an
903 excluded directory. This bug has been fixed by ignoring all quota
904 processing for deliveries into excluded directories.
905
d6629cdc
PH
906PH/10 Added the maildirfolder_create_regex option to appendfile.
907
1cce3af8 908
214e2000
PH
909Exim version 4.61
910-----------------
911
912PH/01 The code for finding all the local interface addresses on a FreeBSD
913 system running IPv6 was broken. This may well have applied to all BSD
914 systems, as well as to others that have similar system calls. The broken
915 code found IPv4 interfaces correctly, but gave incorrect values for the
916 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
917 that it would not match correctly against @[] and not recognize the IPv6
918 addresses as local.
919
f9daeae0
PH
920PH/02 The ipliteral router was not recognizing addresses of the form user@
921 [ipv6:....] because it didn't know about the "ipv6:" prefix.
922
7e66e54d
PH
923PH/03 Added disable_ipv6.
924
c8ea1597
PH
925PH/04 Changed $reply_address to use the raw form of the headers instead of the
926 decoded form, because it is most often used to construct To: headers
927 lines in autoreplies, and the decoded form may well be syntactically
928 invalid. However, $reply_address has leading white space removed, and all
929 newlines turned into spaces so that the autoreply transport does not
930 grumble.
931
911f6fde
PH
932PH/05 If group was specified without a user on a router, and no group or user
933 was specified on a transport, the group from the router was ignored.
934
47ca6d6c
PH
935PH/06 Increased the number of ACL variables to 20 of each type, and arranged
936 for visible compile-time settings that can be used to change these
937 numbers, for those that want even more. Backwards compatibility with old
938 spool files has been maintained. However, going back to a previous Exim
939 release will lost any variables that are in spool files.
940
ed0e9820
PH
941PH/07 Two small changes when running in the test harness: increase delay when
942 passing a TCP/IP connection to a new process, in case the original
943 process has to generate a bounce, and remove special handling of
944 127.0.0.2 (sic), which is no longer necessary.
945
eff37e47
PH
946PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
947 be the same on different OS.
948
1921d2ea
PH
949PH/09 Moved a debug statement in filter processing to avoid a race problem when
950 testing.
951
b3f69ca8
JJ
952JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
953 whether --show-vars was specified or not
954
955JJ/02 exipick: Added support for new ACL variable spool format introduced
956 in 4.61-PH/06
957
424a1c63
PH
958PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
959 syntactically invalid From: or Reply-to: line, and a filter used this to
960 generate an autoreply, and therefore failed to obtain an address for the
961 autoreply, Exim could try to deliver to a non-existent relative file
962 name, causing unrelated and misleading errors. What now happens is that
963 it logs this as a hard delivery error, but does not attempt to create a
964 bounce message.
965
7a100415
PH
966PH/11 The exinext utility has a -C option for testing purposes, but although
967 the given file was scanned by exinext itself; it wasn't being passed on
968 when Exim was called.
969
19b9dc85
PH
970PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
971 an end-of-file indication when reading a command response.
972
309bd837
PH
973PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
974 compiled. In many other places in Exim, IPv6 addresses are always
975 recognized, so I have changed this. It also means that IPv4 domain
976 literals of the form [IPV4:n.n.n.n] are now always recognized.
977
59e82a2a
PH
978PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
979 used if the router is not running as root, for example, when verifying at
980 ACL time, or when using -bh. The debugging output from this situation was
981 non-existent - all you got was a failure to exec. I have made two
982 changes:
983
984 (a) Failures to set uid/gid, the current directory, or a process leader
985 in a subprocess such as that created by queryprogram now generate
986 suitable debugging ouput when -d is set.
987
988 (b) The queryprogram router detects when it is not running as root,
989 outputs suitable debugging information if -d is set, and then runs
990 the subprocess without attempting to change uid/gid.
991
9edc04ce
PH
992PH/15 Minor change to Makefile for building test_host (undocumented testing
993 feature).
994
1349e1e5
PH
995PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
996 additional section of a DNS packet that returns MX or SRV records.
997 Instead, it always explicitly searches for A/AAAA records. This avoids
998 major problems that occur when a DNS server includes only records of one
999 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1000 fixed another bug: if SRV records were looked up and the corresponding
1001 address records were *not* found in the additional section, the port
1002 values from the SRV records were lost.
1003
ea49d0e1
PH
1004PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1005 using the correct key (the original address) when searching the retry
1006 rules in order to find which one to use for generating the retry hint.
1007
064a94c9
PH
1008PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1009 adding the default one. Similarly, if it contains a Reply-To: header, the
1010 errors_reply_to option, if set, is not used.
1011
727071f8
PH
1012PH/19 When calculating a retry time, Exim used to measure the "time since
1013 failure" by looking at the "first failed" field in the retry record. Now
1014 it does not use this if it is later than than the arrival time of the
1015 message. Instead it uses the arrival time. This makes for better
1016 behaviour in cases where some deliveries succeed, thus re-setting the
1017 "first failed" field. An example is a quota failure for a huge message
1018 when small messages continue to be delivered. Without this change, the
1019 "time since failure" will always be short, possible causing more frequent
1020 delivery attempts for the huge message than are intended.
dd16e114 1021 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1022
f78eb7c6
PH
1023PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1024 $1, $2, $3) because the numerical variables can be reset during some
1025 expansion items (e.g. "match"), thereby losing the authentication data.
1026
21c28500
PH
1027PH/21 Make -bV show the size of off_t variables so that the test suite can
1028 decide whether to run tests for quotas > 2G.
1029
1030PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1031 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1032 filecount value is greater than 2G or if a quota value is greater than 2G
1033 on a system where the size of off_t is not greater than 4, a panic error
1034 is given.
1035
1688f43b
PH
1036PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1037 never match. The debug and -bh output now contains an explicit error
1038 message indicating a malformed IPv4 address or mask.
1039
1040PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1041 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1042 PH/23 above applies.
1043
9675b384
PH
1044PH/25 Do not write to syslog when running in the test harness. The only
1045 occasion when this arises is a failure to open the main or panic logs
1046 (for which there is an explicit test).
1047
6a3f1455
PH
1048PH/26 Added the /no_tell option to "control=freeze".
1049
dac79d3e
PH
1050PH/27 If a host name lookup failed very early in a connection, for example, if
1051 the IP address matched host_lookup and the reverse lookup yielded a name
1052 that did not have a forward lookup, an error message of the form "no IP
1053 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1054 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1055
5977a0b3
PH
1056PH/28 An enabling patch from MH: add new function child_open_exim2() which
1057 allows the sender and the authenticated sender to be set when
1058 submitting a message from within Exim. Since child_open_exim() is
1059 documented for local_scan(), the new function should be too.
1060
c91535f3
PH
1061PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1062 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1063 results in an empty string is now treated as unset.
1064
0d46a8c8
PH
1065PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1066
278c6e6c
PH
1067PH/31 Added sender_verify_fail logging option.
1068
2cbb4081
PH
1069PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1070 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1071 tidied the source and removed it altogether.
1072
3eef829e
PH
1073PH/33 When a queue run was abandoned because the load average was too high, a
1074 log line was always written; now it is written only if the queue_run log
1075 selector is set. In addition, the log line for abandonment now contains
1076 information about the queue run such as the pid. This is always present
1077 in "start" and "stop" lines but was omitted from the "abandon" line.
1078
1ab95fa6
PH
1079PH/34 Omit spaces between a header name and the colon in the error message that
1080 is given when verify = headers_syntax fails (if there are lots of them,
1081 the message gets confusing).
1082
230205fc
PH
1083PH/35 Change the default for dns_check_names_pattern to allow slashes within
1084 names, as there are now some PTR records that contain slashes. This check
1085 is only to protect against broken name servers that fall over on strange
1086 characters, so the fact that it applies to all lookups doesn't matter.
1087
75e0e026
PH
1088PH/36 Now that the new test suite is complete, we can remove some of the
1089 special code in Exim that was needed for the old test suite. For example,
1090 sorting DNS records because real resolvers return them in an arbitrary
1091 order. The new test suite's fake resolver always returns records in the
1092 same order.
1093
1094PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1095 bounces) except when queue_only is set, to avoid logging races between
1096 the different processes.
1097
145396a6
PH
1098PH/38 Panic-die if .include specifies a non-absolute path.
1099
3cd34f13
PH
1100PH/39 A tweak to the "H" retry rule from its user.
1101
11121d3d
JJ
1102JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1103 a label. They prevented compilation on older perls.
1104
1105JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1106 a warning to be raised on newish perls.
1107
1108JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1109 on queue. Changes to match documented behaviour of showing count of
1110 messages matching specified criteria.
1111
8def5aaf
PH
1112PH/40 Changed the default ident timeout from 30s to 5s.
1113
929ba01c
PH
1114PH/41 Added support for the use of login_cap features, on those BSD systems
1115 that have them, for controlling the resources used by pipe deliveries.
1116
2632889e
PH
1117PH/42 The content-scanning code uses fopen() to create files in which to put
1118 message data. Previously it was not paying any attention to the mode of
1119 the files. Exim runs with umask(0) because the rest of the code creates
1120 files with open(), and sets the required mode explicitly. Thus, these
1121 files were ending up world-writeable. This was not a big issue, because,
1122 being within the spool directory, they were not world-accessible. I have
1123 created a function called modefopen, which takes an additional mode
1124 argument. It sets umask(777), creates the file, chmods it to the required
1125 mode, then resets the umask. All the relevant calls to fopen() in the
1126 content scanning code have been changed to use this function.
1127
944a9c55
PH
1128PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1129 to 24 hours. This avoids potential overflow problems when processing G
1130 and H retry rules. I suspect nobody ever tinkers with this value.
1131
4a23603b
PH
1132PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1133
4730f942
PH
1134PH/45 When the plaintext authenticator is running as a client, the server's
1135 challenges are checked to ensure they are valid base64 strings. By
1136 default, the authentication attempt is cancelled if an invalid string is
1137 received. Setting client_ignore_invalid_base64 true ignores these errors.
1138 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1139 they are received. Thus, the responses can be made to depend on the
1140 challenges. If an invalid string is ignored, an empty string is placed in
1141 the variable.
1142
30dba1e6
PH
1143PH/46 Messages that are created by the autoreply transport now contains a
1144 References: header, in accordance with RFCs 2822 and 3834.
1145
382afc6b
PH
1146PH/47 Added authenticated_sender_force to the smtp transport.
1147
a86229cf
PH
1148PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1149
50c99ba6
PH
1150PH/49 Installed latest patch from the Sieve maintainer.
1151
d35e429d
PH
1152PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1153 was also set, the appendfile transport was unnecessarily scanning a
1154 directory of message files (e.g. for maildir delivery) to find the count
1155 of files (along with the size), even though it did not need this
1156 information. It now does the scan only if it needs to find either the
1157 size of the count of files.
1158
f90d018c
PH
1159PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1160
75def545
PH
1161PH/52 Two bugs concerned with error handling when the smtp transport is
1162 used in LMTP mode:
1163
1164 (i) Exim was not creating retry information for temporary errors given
1165 for individual recipients after the DATA command when the smtp transport
1166 was used in LMTP mode. This meant that they could be retried too
1167 frequently, and not timed out correctly.
1168
1169 (ii) Exim was setting the flag that allows error details to be returned
1170 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1171 recipients that were returned after the DATA command.
1172
1173PH/53 This is related to PH/52, but is more general: for any failing address,
1174 when detailed error information was permitted to be returned to the
1175 sender, but the error was temporary, then after the final timeout, only
1176 "retry timeout exceeded" was returned. Now it returns the full error as
1177 well as "retry timeout exceeded".
1178
c46782ef
PH
1179PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1180 do this, and (what is worse) MTAs that accept it.
1181
71fafd95
PH
1182PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1183 will now be deprecated.
1184
2c5db4fd
PH
1185PH/56 New os.c-cygwin from the Cygwin maintainer.
1186
9cf6b11a
JJ
1187JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1188 formats (previously only available in exim formats via -bpr, -bpru,
1189 and -bpra. Now also available in native and exiqgrep formats)
1190
1191JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1192 with very large, slow to parse queues
1193
1194JJ/08 exipick: added ! as generic prefix to negate any criteria format
1195
1196JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1197
898d150f
PH
1198PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1199 responses to authentication challenges, though it was showing the
1200 challenges; (ii) I've removed the CR characters from the debug output for
1201 SMTP output lines.
1202
46218253
PH
1203PH/58 Allow for the insertion of a newline as well as a space when a string
1204 is turned into more than one encoded-word during RFC 2047 encoding. The
1205 Sieve code now uses this.
1206
e97957bc
PH
1207PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1208 data_4xx, lost_connection, tls_required.
1209
81e509d7
PH
1210PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1211 message was being sent as an SMTP response.
1212
3d240ff7
PH
1213PH/61 Add -l and -k options to exicyclog.
1214
b37c4101
PH
1215PH/62 When verifying, if an address was redirected to one new address, so that
1216 verification continued, and the new address failed or deferred after
1217 having set something in $address_data, the value of $address_data was not
1218 passed back to the ACL. This was different to the case when no
1219 redirection occurred. The value is now passed back in both cases.
1220
79378e0f
PH
1221PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1222 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1223 use login_cap.h, so on its own it isn't the distinguishing feature. The
1224 new name refers directly to the setclassresources() function.
1225
e49c7bb4
PH
1226PH/65 Added configuration files for NetBSD3.
1227
d114ec46
PH
1228PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1229
f3d7df6c
PH
1230PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1231 is preferred over IPv4.
1232
715ab376
PH
1233PH/68 The bounce_return_message and bounce_return_body options were not being
1234 honoured for bounces generated during the reception of non-SMTP messages.
1235 In particular, this applied to messages rejected by the ACL. This bug has
1236 been fixed. However, if bounce_return_message is true and bounce_return_
1237 body is false, the headers that are returned for a non-SMTP message
1238 include only those that have been read before the error was detected.
1239 (In the case of an ACL rejection, they have all been read.)
1240
6b31b150
PH
1241PH/69 The HTML version of the specification is now built in a directory called
1242 spec_html instead of spec.html, because the latter looks like a path with
1243 a MIME-type, and this confuses some software.
1244
1245PH/70 Catch two compiler warnings in sieve.c.
1246
d515a917
PH
1247PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1248 function verify_get_ident() calls ip_connect() to connect a socket, but
1249 if the "connect()" function timed out, ip_connect() used to close the
1250 socket. However, verify_get_ident() also closes the socket later, and in
1251 between Exim writes to the log, which may get opened at this point. When
1252 the socket was closed in ip_connect(), the log could get the same file
1253 descriptor number as the socket. This naturally causes chaos. The fix is
1254 not to close the socket in ip_connect(); the socket should be closed by
1255 the function that creates it. There was only one place in the code where
1256 this was missing, in the iplookup router, which I don't think anybody now
1257 uses, but I've fixed it anyway.
1258
9b8fadde
PH
1259PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1260 well as to direct DNS lookups. Otherwise the handling of names in host
1261 lists is inconsistent and therefore confusing.
1262
214e2000 1263
5de37277
PH
1264Exim version 4.60
1265-----------------
1266
cc38ddbf
PH
1267PH/01 Two changes to the default runtime configuration:
1268
1269 (1) Move the checks for relay_from_hosts and authenticated clients from
1270 after to before the (commented out) DNS black list checks.
1271
1272 (2) Add control=submission to the relay_from_hosts and authenticated
1273 clients checks, on the grounds that messages accepted by these
1274 statements are most likely to be submissions.
5de37277 1275
72fdd6ae
PH
1276PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1277
1278 (1) Generate an error if the third argument for the ${prvs expansion is
1279 not a single digit.
1280
1281 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1282 string.
1283
1284 (3) Reset the variables that are obtained from the first argument of
1285 ${prvscheck and used in the second argument before leaving the code,
1286 because their memory is reclaimed, so using them afterwards may do
1287 silly things.
1288
1289 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1290 one (it's much easier than Tom thought :-).
1291
1292 (5) Because of (4), we can now allow for the use of $prvscheck_result
1293 inside the third argument.
cb9328de 1294
cb741023
PH
1295PH/03 For some reason, the default setting of PATH when running a command from
1296 a pipe transport was just "/usr/bin". I have changed it to
1297 "/bin:/usr/bin".
1298
f174f16e
PH
1299PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1300 anything to be listed in the output from -bV.
b2f5a032 1301
c25242d7
PH
1302PH/05 When a filter generated an autoreply, the entire To: header line was
1303 quoted in the delivery log line, like this:
1304
1305 => >A.N.Other <ano@some.domain> <original@ddress> ...
1306
1307 This has been changed so that it extracts the operative address. There
1308 may be more than one such address. If so, they are comma-separated, like
1309 this:
1310
1311 => >ano@some.domain,ona@other.domain <original@ddress> ...
1312
82c19f95
PH
1313PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1314 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1315 not being looked up in the rDNS to get a host name, Exim was showing the
1316 IP address twice in Received: lines, even though the IP addresses were
1317 identical. For example:
1318
1319 Received: from [1.2.3.4] (helo=[1.2.3.4])
1320
1321 However, if the real host name was known, it was omitting the HELO data
1322 if it matched the actual IP address. This has been tidied up so that it
1323 doesn't show the same IP address twice.
1324
d7ffbc12
PH
1325PH/07 When both +timestamp and +memory debugging was on, the value given by
1326 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1327 called by the debug printing, thereby overwriting the timestamp buffer.
1328 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1329
9f526266
PH
1330PH/08 When the original message was included in an autoreply transport, it
1331 always said "this is a copy of the message, including all the headers",
1332 even if body_only or headers_only was set. It now gives an appropriate
1333 message.
1334
87fcc8b9
PH
1335PH/09 Applied a patch from the Sieve maintainer which:
1336
1337 o fixes some comments
1338 o adds the (disabled) notify extension core
1339 o adds some debug output for the result of if/elsif tests
1340 o points to the current vacation draft in the documentation
1341 and documents the missing references header update
1342
1343 and most important:
1344
1345 o fixes a bug in processing the envelope test (when testing
1346 multiple envelope elements, the last element determinted the
1347 result)
1348
456682f5
PH
1349PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1350 Electronic Mail") by including:
1351
1352 Auto-submitted: auto-generated
1353
1354 in the messages that it generates (bounce messages and others, such as
1355 warnings). In the case of bounce messages for non-SMTP mesages, there was
1356 also a typo: it was using "Auto_submitted" (underscore instead of
1357 hyphen). Since every message generated by Exim is necessarily in response
1358 to another message, thes have all been changed to:
1359
1360 Auto-Submitted: auto-replied
1361
1362 in accordance with these statements in the RFC:
1363
1364 The auto-replied keyword:
1365
1366 - SHOULD be used on messages sent in direct response to another
1367 message by an automatic process,
1368
1369 - MUST NOT be used on manually-generated messages,
1370
1371 - MAY be used on Delivery Status Notifications (DSNs) and Message
1372 Disposition Notifications (MDNs),
1373
1374 - MUST NOT be used on messages generated by automatic or periodic
1375 processes, except for messages which are automatic responses to
1376 other messages.
1377
3e46c1aa
PH
1378PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1379 to the default Received: header definition.
456682f5 1380
49826d12
PH
1381PH/12 Added log selector acl_warn_skipped (default on).
1382
eba0c039
PH
1383PH/13 After a successful wildlsearch lookup, discard the values of numeric
1384 variables because (a) they are in the wrong storage pool and (b) even if
1385 they were copied, it wouldn't work properly because of the caching.
1386
a0d6ba8a
PH
1387PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1388 checking when decoding. Apparently there are clients that generate
1389 overlong encoded strings. Why am I not surprised?
1390
f0917727
PH
1391PH/15 If the first argument of "${if match_address" was not empty, but did not
1392 contain an "@" character, Exim crashed. Now it writes a panic log message
1393 and treats the condition as false.
1394
096fee00
PH
1395PH/16 In autoreply, treat an empty string for "once" the same as unset.
1396
024bd3c2
PH
1397PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1398 extension "envelope-auth". The code is finished and in agreement with
1399 other implementations, but there is no documentation so far and in fact,
1400 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1401 not changing the active code.
1402
1403 Print executed "if" and "elsif" statements when debugging is used. This
1404 helps a great deal to understand what a filter does.
1405
1406 Document more things not specified clearly in RFC3028. I had all this
1407 sorted out, when out of a sudden new issues came to my mind. Oops."
1408
df199fec
PH
1409PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1410 (Bugzilla #53).
1411
d27f1df3
PH
1412PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1413 canonical form (as documented). However, after a host name lookup from
1414 the IP address, check_host() was doing a simple string comparison with
1415 addresses acquired from the DNS when checking that the found name did
1416 have the original IP as one of its addresses. Since any found IPv6
1417 addresses are likely to be in abbreviated form, the comparison could
1418 fail. Luckily, there already exists a function for doing the comparison
1419 by converting both addresses to binary, so now that is used instead of
1420 the text comparison.
1421
96776534
PH
1422PH/20 There was another similar case to PH/19, when a complete host name was
1423 given in a host list; looking up its IP address could give an abbreviated
1424 form, whereas the current host's name might or might not be abbreviated.
1425 The same fix has been applied.
1426
5de37277 1427
9a799bc0
PH
1428Exim version 4.54
1429-----------------
1430
1431PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1432 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1433 It now does.
1434
99a4b039
PH
1435PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1436 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1437
1438PH/03 Typo: missing ".o" in src/pcre/Makefile.
1439
4b233853
PH
1440PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1441 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1442 Also, for "Auto-Submitted", treat anything other than "no" as
1443 non-personal, in accordance with RFC 3834. (Previously it treated
1444 anything starting "auto-" as non-personal.)
1445
8857ccfd
PH
1446TF/01 The control=submission/name=... option had a problem with syntax
1447 errors if the name included a slash character. The /name= option
1448 now slurps the rest of the string, so it can include any characters
1449 but it must come last in the list of options (after /sender_retain
1450 or /domain=).
1451
433a2980
PH
1452PH/05 Some modifications to the interface to the fake nameserver for the new
1453 testing suite.
1454
3e46c1aa 1455
9a799bc0 1456
e3a311ba
TK
1457Exim version 4.53
1458-----------------
1459
1460TK/01 Added the "success_on_redirect" address verification option. See
1461 NewStuff for rationale and an example.
1462
13b685f9
PH
1463PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1464
395ff96d
PH
1465PH/02 Patch to exigrep to allow it to work on syslog lines.
1466
5b68f6e4
PH
1467PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1468 fread() to skip over the body file's header line, because in Cygwin the
1469 header line is locked and is inaccessible.
1470
1ab52c69
PH
1471PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1472 co-exist for some time) to make it clear that it is the Exim ID that is
1473 referenced, not the Message-ID: header line.
1474
b07e6aa3
PH
1475PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1476 string_format() function, because snprintf() does not exist on all
1477 operating systems.
1478
254e032f
PH
1479PH/06 The use of forbid_filter_existstest now also locks out the use of the
1480 ${stat: expansion item.
1481
3af76a81
PH
1482PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1483 protocol synchronization error", to keep the pedants happy.
1484
2548ba04
PH
1485PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1486 well as for IRIX systems, when gcc is being used. See the host.c source
1487 file for comments.
1488
b6c6011d
PH
1489PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1490
cf39cf57
PH
1491PH/10 Named domain lists were not working if used in a queue_smtp_domains
1492 setting.
1493
f1513293
PH
1494PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1495 transport and to the smtp transport in LMTP mode.
1496
727549a4
PH
1497TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1498
af46795e
PH
1499PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1500 run a filter in a subprocess. This could lead to confusion in subsequent
1501 lookups in the parent process. There should also be a search_tidyup() at
1502 the end of the subprocess.
1503
d7b47fd0
PH
1504PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1505 only if the host matched helo_try_verify_hosts, which caused the
1506 verification to occur when the EHLO/HELO command was issued. The ACL just
1507 tested the remembered result. Now, if a previous verification attempt has
1508 not happened, "verify = helo" does it there and then.
1509
ee744174
JJ
1510JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1511
b582ab87
PH
1512TK/03 Fix log output including CR from clamd.
1513
41a13e0a
PH
1514PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1515 exist provoked a memory error which could cause a segfault.
1516
f625cc5a
PH
1517PH/15 Installed PCRE 6.2
1518
1519PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1520
21f7af35
PH
1521PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1522 of the problem. Specifically, suggested +O2 rather than +O1 for the
1523 HP-UX compiler.
1524
31480e42
PH
1525PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1526
2d280592
PH
1527PH/20 If a delivery was routed to a non-standard port by means of an SRV
1528 record, the port was not correctly logged when the outgoing_port log
1529 selector was set (it logged the transort's default port).
1530
7cd1141b
PH
1531PH/21 Added support for host-specific ports to manualroute, queryprogram,
1532 fallback_hosts, and "hosts" in the smtp transport.
1533
1534PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1535 host errors such as "Connection refused".
1536
750af86e
PH
1537PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1538 authentication with radiusclient 0.4.9:
1539
1540 - Error returned from rc_read_config was caught wrongly
1541 - Username/password not passed on to radius server due to wrong length.
1542
1543 The presumption is that some radiusclient API changes for 4.51/PH/17
1544 were not taken care of correctly. The code is still untested by me (my
1545 Linux distribution still has 0.3.2 of radiusclient), but it was
1546 contributed by a Radius user.
1547
1548PH/24 When doing a callout, the value of $domain wasn't set correctly when
1549 expanding the "port" option of the smtp transport.
1550
4304270b
TK
1551TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1552 while reading a MIME header. Thanks to Tom Hughes for a patch.
1553
750af86e
PH
1554PH/24 Include config.h inside local_scan.h so that configuration settings are
1555 available.
1556
64ffc24f
PH
1557PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1558 that in an ACL for RCPT (for example), you can examine exactly what was
1559 received.
1560
5dd9625b
PH
1561PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1562 commands, but it was not correctly comparing the address with the actual
1563 client host address. Thus, it would show the EHLO address in Received:
1564 header lines when this was not necessary.
1565
5591031b
PH
1566PH/27 Added the % operator to ${eval:}.
1567
ba18e66a
PH
1568PH/28 Exim tries to create and chdir to its spool directory when it starts;
1569 it should be ignoring failures (because with -C, for example, it has lost
1570 privilege). It wasn't ignoring creation failures other than "already
1571 exists".
1572
9cec981f
PH
1573PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1574 -bV or -d is used.
1575
aa2b5c79
PH
1576PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1577 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1578 too many continuations, the temporary file was not being removed, and the
1579 return code was incorrect.
aa2b5c79 1580
48a53b7f
PH
1581PH/31 Missing "BOOL" in function definition in filtertest.c.
1582
1c59d63b
PH
1583PH/32 Applied Sieve patches from the maintainer.
1584
671012da
TK
1585TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1586
1509d3a8
PH
1587PH/33 Added "verify = not_blind".
1588
1589PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1590 Local/Makefile (with some defaults set). These are used in built scripts
1591 such as exicyclog, but they have never been used in the exim_install
1592 script (though there are many overriding facilities there). I have
1593 arranged that the exim_install script now takes note of these two
1594 settings.
1595
1596PH/35 Installed configuration files for Dragonfly.
1597
2fe1a124
PH
1598PH/36 When a locally submitted message by a trusted user did not contain a
1599 From: header, and the sender address was obtained from -f or from an SMTP
1600 MAIL command, and the trusted user did not use -F to supply a sender
1601 name, $originator_name was incorrectly used when constructing a From:
1602 header. Furthermore, $originator_name was used for submission mode
1603 messages from external hosts without From: headers in a similar way,
1604 which is clearly wrong.
1605
8800895a
PH
1606PH/37 Added control=suppress_local_fixups.
1607
ccfdb010
PH
1608PH/38 When log_selector = +received_sender was set, and the addition of the
1609 sender made the log line's construction buffer exactly full, or one byte
1610 less than full, an overflow happened when the terminating "\n" was
1611 subsequently added.
1612
1130bfb0
PH
1613PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1614 when the result of a list match is failure because a DNS lookup failed.
1615
ebcb507f
PH
1616PH/40 RM_COMMAND is now used in the building process.
1617
c35e155c
PH
1618PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1619 the "build-* directories that it finds.
1620
95d1f782
PH
1621PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1622 address in a domain literal was a prefix of an interface address.
1623
fd6de02e
PH
1624PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1625 when verifying a sender address, unless rewrite_headers is false.
1626
58de37c5
PH
1627PH/44 Wrote a long comment about why errors_to addresses are verified as
1628 recipients, not senders.
1629
261cf466
TF
1630TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1631 the ratelimit ACL was added.
1632
3ee512ff
PH
1633PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1634
e08c430f
PH
1635PH/46 Added extra information about PostgreSQL errors to the error string.
1636
bef5a11f
PH
1637PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1638 avoiding the need to install special zones in a real server. This is
1639 backwards compatible; if it can't find the fake resolver, it drops back.
1640 Thus, both old and new test suites can be run.
1641
7546de58
TF
1642TF/02 Added util/ratelimit.pl
1643
e5d5a95f
TF
1644TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1645 clock is set back in time.
1646
2e88a017
TF
1647TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1648 Candler <B.Candler@pobox.com>.
1649
a5f65aa4
TF
1650TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1651 OK for addresses that are the result of redirections.
1652
e7726cbf
PH
1653PH/48 A number of further additions for the benefit of the new test suite,
1654 including a fake gethostbyname() that interfaces to the fake DNS resolver
1655 (see PH/47 above).
1656
a7fdad5b
TF
1657TF/06 The fix for widen_domains has also been applied to qualify_single and
1658 search_parents which are the other dnslookup options that can cause
1659 header rewrites.
1660
6af56900
PH
1661PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1662 type ("H").
1663
0925ede6
PH
1664PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1665
66afa403
TF
1666TF/07 Exim produced the error message "an SRV record indicated no SMTP
1667 service" if it encountered an MX record with an empty target hostname.
1668 The message is now "an MX or SRV record indicated no SMTP service".
1669
0154e85a
TF
1670TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1671 if the DNS of the sending site is misconfigured. This is quite a
1672 common situation. This change restores the behaviour of treating a
1673 helo verification defer as a failure.
1674
16f12c76
PH
1675PH/51 If self=fail was set on a router, the bounce message did not include the
1676 actual error message.
1677
bbe902f0 1678
e5a9dba6
PH
1679Exim version 4.52
1680-----------------
1681
1682TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1683
22c3b60b
PH
1684PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1685 command itself ended in error, the underlying message about the transport
1686 filter timeout was being overwritten with the pipe command error. Now the
1687 underlying error message should be appended to the second error message.
1688
06a9b4b5
PH
1689TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1690
c1ac6996
PH
1691PH/02 Reduce the amount of output that "make" produces by default. Full output
1692 can still be requested.
1693
9c7a242c
PH
1694PH/03 The warning log line about a condition test deferring for a "warn" verb
1695 was being output only once per connection, rather than after each
1696 occurrence (because it was using the same function as for successful
1697 "warn" verbs). This seems wrong, so I have changed it.
1698
87ba3f5f
PH
1699TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1700 it should not have, which might have caused a crash in the right
1701 circumstances, but probably never did.
1702
1703PH/04 Installed a modified version of Tony Finch's patch to make submission
1704 mode fix the return path as well as the Sender: header line, and to
1705 add a /name= option so that you can make the user's friendly name appear
1706 in the header line.
1707
29aba418
TF
1708TF/03 Added the control = fakedefer ACL modifier.
1709
fe0dab11
TF
1710TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1711 Mark Lowes for thorough testing.
870f6ba8 1712
11d337a4
TK
1713TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1714
1715TK/03 Merged latest SRS patch from Miles Wilton.
1716
415c8f3b
PH
1717PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1718 with the definition in sysexits.h (which is #included earlier).
1719 Fortunately, Exim does not actually use EX_OK. The code used to try to
1720 preserve the sysexits.h value, by assumimg that macro definitions were
1721 scanned for macro replacements. I have been disabused of this notion,
1722 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1723
958541e9
PH
1724PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1725 in the smtp transport. When a block could not be written in a single
1726 write() function, the timeout was being re-applied to each part-write.
1727 This seems wrong - if the receiver was accepting one byte at a time it
1728 would take for ever. The timeout is now adjusted when this happens. It
1729 doesn't have to be particularly precise.
1730
c206415f
TK
1731TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1732 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1733
2a4be8f9
PH
1734PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1735 without a domain if the check to <postmaster@domain> fails.
1736
1cba11c5
SC
1737SC/01 Eximstats: added -xls and the ability to specify output files
1738 (patch written by Frank Heydlauf).
1739
1740SC/02 Eximstats: use FileHandles for outputing results.
1741
1742SC/03 Eximstats: allow any combination of xls, txt, and html output.
1743
1744SC/04 Eximstats: fixed display of large numbers with -nvr option
1745
1746SC/05 Eximstats: fixed merging of reports with empty tables.
1747
1748SC/06 Eximstats: added the -include_original_destination flag
1749
1750SC/07 Eximstats: removed tabs and trailing whitespace.
1751
1005d00e
TK
1752TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1753
1754TK/06 MBOX spool code: Add real "From " MBOX separator line
1755 so the .eml file is really in mbox format (even though
1756 most programs do not really care). Patch from Alex Miller.
1757
1758TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1759 The latter is generated from $received_to and is only set if the
1760 message has one envelope recipient. SA can use these headers,
1761 obviously out-of-the-box. Patch from Alex Miller.
1762
9b4768fa
PH
1763PH/08 The ${def test on a variable was returning false if the variable's
1764 value was "0", contrary to what the specification has always said!
1765 The result should be true unless the variable is empty.
1766
1767PH/09 The syntax error of a character other than { following "${if
1768 def:variable_name" (after optional whitespace) was not being diagnosed.
1769 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1770 accidental colon was present, for example, could give incorrect results.
1771
0d7eb84a
PH
1772PH/10 Tidied the code in a number of places where the st_size field of a stat()
1773 result is used (not including appendfile, where other changes are about
1774 to be made).
1775
1776PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1777 This involved changing a lot of size variables from int to off_t. It
1778 should work with maildirs and everything.
1779
40727bee
TK
1780TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1781 spamd dying while we are connected to it.
1782
554d2369
TF
1783TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1784 <jgh@wizmail.org>
1785
1f922db1
PH
1786PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1787 function for BDB 4.3.
1788
ef213c3b
PH
1789PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1790
8ac170f3
PH
1791PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1792 the sources for PCRE have been re-arranged and more files are now
1793 involved.
1794
b1c749bb
PH
1795PH/15 The code I had for printing potentially long long variables in PH/11
1796 above was not the best (it lost precision). The length of off_t variables
1797 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1798 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1799 to be "long long int" or "long int". This is needed for the internal
1800 formatting function string_vformat().
b1c749bb 1801
4aac9b49
PH
1802PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1803 the configuration file to be ":syslog", then the script "guesses" where
1804 the logs files are, rather than using the compiled in default. In our
1805 case the guess is not the same as the compiled default, so the script
1806 suddenly stopped working when I started to use syslog. The patch checks
1807 to see if log_file_path is "". If so, it attempts to read it from exim
1808 with no configuration file to get the compiled in version, before it
1809 falls back to the previous guessing code."
1810
294520c8
TK
1811TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1812 implementing BATV in an Exim configuration. See NewStuff for the gory
1813 details.
1814
5bd022fe
PH
1815PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1816 Makefile that are specific to HP-UX.
1817
90e9ce59
PH
1818PH/18 If the "use_postmaster" option was set for a recipient callout together
1819 with the "random" option, the postmaster address was used as the MAIL
1820 FROM address for the random test, but not for the subsequent recipient
1821 test. It is now used for both.
1822
5ea81592
PH
1823PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1824 patch removes a few documentation additions to RFC 3028, because the
1825 latest draft now contains them. It adds the new en;ascii-case comparator
1826 and a new error check for 8bit text in MIME parts. Comparator and
1827 require names are now matched exactly. I enabled the subaddress
1828 extension, but it is not well tested yet (read: it works for me)."
1829
c6c2dc1d
PH
1830PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1831 rework some of the code of TK/09 above to avoid the hardwired use of
1832 "%lld" and "long long". Replaced the call to snprintf() with a call to
1833 string_vformat().
1834
fffffe4c
PH
1835PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1836 records point to non-existent hosts", "retry timeout exceeded", and
1837 "retry time not reached for any host after a long failure period".
ca02eafb 1838
9a26b6b2
PH
1839PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1840 experimental DomainKeys support:
1841
1842 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1843 (2) On an error such as an illegally used "control", the wrong name for
1844 the control was given.
1845
1846 These problems did NOT occur unless DomainKeys support was compiled.
1847
4aee0225
PH
1848PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1849
32d668a5
PH
1850PH/24 Added ${if match_ip condition.
1851
8187c3f3
PH
1852PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1853 databases so that it will be absolutely obvious if a crash occurs in the
1854 DB library. This is a regular occurrence (often caused by mis-matched
1855 db.h files).
1856
ff790e47 1857PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1858 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1859 picked up on a user's system that detects such things. There doesn't seem
1860 to be a gcc warning option for this - only an attribute that has to be
1861 put on the function's prototype. It seems that in Fedora Core 4 they have
1862 set this on a number of new functions. No doubt there will be more in due
1863 course.
ff790e47 1864
5417f6d1
PH
1865PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1866 specify a transport. However, if an address that was verified by such a
1867 router was the subject of a callout, Exim crashed because it tried to
1868 read the rcpt_include_affixes from the non-existent transport. Now it
1869 just assumes that the setting of that option is false. This bug was
1870 introduced by 4.51/PH/31.
1871
59cf8544
PH
1872PH/28 Changed -d+all to exclude +memory, because that information is very
1873 rarely of interest, but it makes the output a lot bigger. People tend to
1874 do -d+all out of habit.
1875
e7ad8a65
PH
1876PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1877 code in os-type was giving problems when libc.so lives in lib64, like on
1878 x86_64 Fedora Core.
1879
ade42478
PH
1880PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1881 aren't the modern standard, and it seems that some systems' include files
1882 don't always have them. Exim was already checking for some of the newer
1883 ones like T_AAAA, and defining it itself. I've added checks for all the
1884 record types that Exim uses.
1885
182ad5cf
PH
1886PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1887 not automatically generating a new one, as it is supposed to. This
1888 prevented TLS from working. If the file did exist, but contained invalid
1889 data, a new version was generated, as expected. It was only the case of a
1890 non-existent file that was broken.
1891
b0d9fc80
TK
1892TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1893 with a change in libdomainkeys > 0.64.
1894
1895TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1896 from DNS. If the selector record carries the flag, it now has
1897 precedence over the domain-wide flag.
1898
1899TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1900
47c7a64a
PH
1901PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1902 the use of a port name that isn't defined in /etc/services) occurred, the
1903 message was deferred as in a normal delivery, and thus remained on the
1904 spool, instead of being failed because of the mua_wrapper setting. This
1905 is now fixed, and I tidied up some of the mua_wrapper messages at the
1906 same time.
1907
a388bce4
SC
1908SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1909 the messages in a hash of arrays rather than using individual hashes.
1910 This is a bit cleaner and results in dramatic memory savings, albeit
1911 at a slight CPU cost.
1912
1913SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1914 as requested by Marc Sherman.
1915
1916SC/10 Eximstats: added histograms for user specified patterns as requested
1917 by Marc Sherman.
1918
0793e4ed
SC
1919SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1920
c58b88df
PH
1921PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1922 fopen() in the content-scanning modules that did not already have it.
1923
e7ad8a65 1924
7982096b
PH
1925Exim version 4.51
1926-----------------
1927
1a46a8c5
PH
1928TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1929 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1930
2f079f46 1931TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1932
1933TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1934
1935PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1936 to test Sieve filters that use "vacation".
1937
1938PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1939 that changes the way the GnuTLS parameters are stored in the cache file.
1940 The new format can be generated externally. For backward compatibility,
1941 if the data in the cache doesn't make sense, Exim assumes it has read an
1942 old-format file, and it generates new data and writes a new file. This
1943 means that you can't go back to an older release without removing the
1944 file.
1945
1946PH/03 A redirect router that has both "unseen" and "one_time" set does not
1947 work if there are any delivery delays because "one_time" forces the
1948 parent to be marked "delivered", so its unseen clone is never tried
1949 again. For this reason, Exim now forbids the simultaneous setting of
1950 these two options.
1951
1952PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1953 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1954 entry if you want to know the details. The fix, however, neglected to
1955 consider the case when local delivery batching is involved. The test for
1956 "previously delivered" was not happening when checking to see if an
1957 address could be batched with a previous (undelivered) one; under
1958 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1959 address.
1a46a8c5
PH
1960
1961PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1962 in its include files, and this causes problems building Exim.
1963
1964PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1965 header_syntax) but Exim was just ignoring anything given after a slash.
1966 In particular, this caused confusion with an attempt to use "verify =
1967 reverse_host_lookup/defer_ok". An error is now given when options are
1968 supplied for verify items that do not have them. (Maybe reverse_host_
1969 lookup should have a defer_ok option, but that's a different point.)
1970
1971PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1972 defined by RFC 821) to 2048, because there were problems with some AUTH
1973 commands, and RFC 1869 says the size should be increased for extended
1974 SMTP commands that take arguments.
1975
1976PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1977 Finch).
1978
1979PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1980 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1981
49c2d5ea
PH
1982PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1983 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1984 whatever). Otherwise the password may appear in the log. Following change
1985 PH/42 below, there is no longer a chance of it appearing in a bounce
1986 message.
49c2d5ea 1987
bf759a8b
PH
1988PH/11 Installed exipick version 20050225.0 from John Jetmore.
1989
83364d30
PH
1990PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1991 of its addresses was ever tried. (Bugzilla bug #2.)
1992
7999bbd7
PH
1993PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1994 the result incorrectly in the debug output. (It correctly added a newline
1995 to what was transported.)
1996
7dbf77c9
PH
1997TF/01 Added $received_time.
1998
74e0617f
PH
1999PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2000 commented out examples of how to interface to a virus scanner and to
2001 SpamAssassin. Also added commented examples of av_scanner and
2002 spamd_address settings.
2003
2f079f46
PH
2004PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2005 and controls are allowed in which ACLs. There were a couple of minor
2006 errors. Some of the entries in the conditions table (which is a table of
2007 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2008 negation of where the condition IS allowed.
2009
8c841523
PH
2010PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2011
7766a4f0
PH
2012PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2013 header file does not have a version number, so I've had to invent a new
2014 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2015 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2016 radiusclient), but it was contributed by a Radius user.
2017
8b417f2c
PH
2018PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2019 files or directories, for OpenSSL.
2020
901f42cb
PH
2021PH/19 When an Exim process that is running as root has to create an Exim log
2022 file, it does so in a subprocess that runs as exim:exim so as to get the
2023 ownership right at creation (otherwise, other Exim processes might see
2024 the file with the wrong ownership). There was no test for failure of this
2025 fork() call, which would lead to the process getting stuck as it waited
2026 for a non-existent subprocess. Forks do occasionally fail when resources
2027 run out. I reviewed all the other calls to fork(); they all seem to check
2028 for failure.
2029
f9b9210e
PH
2030PH/20 When checking for unexpected SMTP input at connect time (before writing
2031 the banner), Exim was not dealing correctly with a non-positive return
2032 from the read() function. If the client had disconnected by this time,
2033 the result was a log entry for a synchronization error with an empty
2034 string after "input=" when read() returned zero. If read() returned -1
2035 (an event I could not check), uninitialized data bytes were printed.
2036 There were reports of junk text (parts of files, etc) appearing after
2037 "input=".
2038
54cdb463
PH
2039PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2040
cf00dad6
PH
2041PH/22 Added support for macro redefinition, and (re)definition in between
2042 driver and ACL definitions.
2043
acb1b346
PH
2044PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2045 forgetting to use the resulting value; it was using the unexpanded value.
2046
c5ddb310
PH
2047PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2048 hadn't been configured. The fix is from Juergen Kreileder, who
2049 understands it better than I do:
2050
2051 "Here's what I see happening with three configured cyrus_sasl
2052 authenticators configured (plain, login, cram-md5):
2053
2054 On startup auth_cyrus_sasl_init() gets called for each of these.
2055 This means three calls to sasl_listmech() without a specified mech_list.
2056 => SASL tests which mechs of all available mechs actually work
2057 => three warnings about OTP not working
2058 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2059
2060 With the patch, sasl_listmech() also gets called three times. But now
2061 SASL's mech_list option is set to the server_mech specified in the the
2062 authenticator. Or in other words, the answer from sasl_listmech()
2063 gets limited to just the mech you're testing for (which is different
2064 for each call.)
2065 => the return list contains just 'plain' or 'login', 'cram-md5' or
2066 nothing depending on the value of ob->server_mech.
2067
2068 I've just tested the patch: Authentication still works fine,
2069 unavailable mechs specified in the exim configuration are still
2070 caught, and the auth.log warnings about OTP are gone."
2071
31619da6
PH
2072PH/25 When debugging is enabled, the contents of the command line are added
2073 to the debugging output, even when log_selector=+arguments is not
2074 specified.
2075
bebaf0fc
PH
2076PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2077 answer is "GNU", and only if the return is "GNU/something" is the answer
2078 "Linux".
2079
475fe28a
PH
2080PH/27 $acl_verify_message is now set immediately after the failure of a
2081 verification in an ACL, and so is available in subsequent modifiers. In
2082 particular, the message can be preserved by coding like this:
2083
2084 warn !verify = sender
2085 set acl_m0 = $acl_verify_message
2086
2087 Previously, $acl_verify_message was set only while expanding "message"
2088 and "log_message" when a very denied access.
2089
7e8bec7a
PH
2090PH/28 Modified OS/os.c-Linux with
2091
2092 -#ifndef OS_LOAD_AVERAGE
2093 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2094
2095 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2096 nomenclature these days.)
2097
e4a89c47
PH
2098PH/29 Installed patch from the Sieve maintainer that adds the options
2099 sieve_useraddress and sieve_subaddress to the redirect router.
2100
5ca2a9a1
PH
2101PH/30 In these circumstances:
2102 . Two addresses routed to the same list of hosts;
2103 . First host does not offer TLS;
2104 . First host accepts first address;
2105 . First host gives temporary error to second address;
2106 . Second host offers TLS and a TLS session is established;
2107 . Second host accepts second address.
2108 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2109 and peerdn, if requested) that were in fact used only for the second
2110 address.
7e8bec7a 2111
c688b954
PH
2112PH/31 When doing a callout as part of verifying an address, Exim was not paying
2113 attention to any local part prefix or suffix that was matched by the
2114 router that accepted the address. It now behaves in the same way as it
2115 does for delivery: the affixes are removed from the local part unless
2116 rcpt_include_affixes is set on the transport.
2117
fed77020
PH
2118PH/32 Add the sender address, as F=<...>, to the log line when logging a
2119 timeout during the DATA phase of an incoming message.
2120
7fe1560f
PH
2121PH/33 Sieve envelope tests were broken for match types other than :is. I have
2122 applied a patch sanctioned by the Sieve maintainer.
c688b954 2123
ebb6e6d5
PH
2124PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2125 the uid or gid is negative. A case of a negative gid caused this to be
2126 noticed. The fix allows for either to be negative.
2127
9c4e8f60
PH
2128PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2129 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2130 overlooked.
2131
2132PH/36 The change PH/12 above was broken. Fixed it.
2133
d7174846
PH
2134PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2135 the grounds that routing the same address twice would always produce the
2136 same answer. This might have been true once, but it is certainly no
2137 longer true now. Routing a child address may depend on the previous
2138 routing that produced that child. Some complicated redirection strategies
2139 went wrong when messages had multiple recipients, and made Exim's
2140 behaviour dependent on the order in which the addresses were given.
2141
2142 I have moved the duplicate checking until after the routing is complete.
2143 Exim scans the addresses that are assigned to local and remote
2144 transports, and removes any duplicates. This means that more work will be
2145 done, as duplicates will always all be routed, but duplicates are
2146 presumably rare, so I don't expect this is of any significance.
2147
2148 For deliveries to pipes, files, and autoreplies, the duplicate checking
2149 still happens during the routing process, since they are not going to be
2150 routed further.
2151
cfe75fc3
PH
2152PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2153 It corrects a timeout issue with spamd. This is Ian's comment: "The
2154 background is that sometimes spamd either never reads data from a
2155 connection it has accepted, or it never writes response data. The exiscan
2156 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2157 blindly assumes that writes won't block so it may never time out."
2158
be22d70e
PH
2159PH/39 Allow G after quota size as well as K and M.
2160
0612b098
PH
2161PH/40 The value set for $authenticated_id in an authenticator may not contain
2162 binary zeroes or newlines because the value is written to log lines and
2163 to spool files. There was no check on this. Now the value is run through
2164 the string_printing() function so that such characters are converted to
2165 printable escape sequences.
2166
2e0c1448
PH
2167PH/41 $message_linecount is a new variable that contains the total number of
2168 lines in the message. Compare $body_linecount, which is the count for the
2169 body only.
2170
447d236c
PH
2171PH/42 Exim no longer gives details of delivery errors for specific addresses in
2172 bounce and delay warning messages, except in certain special cases, which
2173 are as follows:
2174
2175 (a) An SMTP error message from a remote host;
2176 (b) A message specified in a :fail: redirection;
2177 (c) A message specified in a "fail" command in a system filter;
2178 (d) A message specified in a FAIL return from the queryprogram router;
2179 (e) A message specified by the cannot_route_message router option.
2180
2181 In these cases only, Exim does include the error details in bounce and
2182 warning messages. There are also a few cases where bland messages such
2183 as "unrouteable address" or "local delivery error" are given.
2184
d20976dc
PH
2185PH/43 $value is now also set for the "else" part of a ${run expansion.
2186
f656d135
PH
2187PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2188 being worked on, but at least Exim now implements the latest version to
2189 play with."
2190
2e2a30b4
PH
2191PH/45 In a pipe transport, although a timeout while waiting for the pipe
2192 process to complete was treated as a delivery failure, a timeout while
2193 writing the message to the pipe was logged, but erroneously treated as a
2194 successful delivery. Such timeouts include transport filter timeouts. For
2195 consistency with the overall process timeout, these timeouts are now
2196 treated as errors, giving rise to delivery failures by default. However,
2197 there is now a new Boolean option for the pipe transport called
2198 timeout_defer, which, if set TRUE, converts the failures into defers for
2199 both kinds of timeout. A transport filter timeout is now identified in
2200 the log output.
2201
9176e9f0
PH
2202PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2203 systems where "make" and "gmake" are different, calling "gmake" at top
2204 level broke things. I've arranged for the value of $(MAKE) to be passed
2205 from the Makefile to this script so that it can call the same version of
2206 "make".
2207
7982096b 2208
bbe902f0
PH
2209A note about Exim versions 4.44 and 4.50
2210----------------------------------------
2211
2212Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2213changes of various kinds. As a consequence, a big documentation update was
2214needed. This delayed the release for rather longer than seemed good, especially
2215in the light of a couple of (minor) security issues. Therefore, the changes
2216that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2217release. So 4.44 and 4.50 are in effect two different branches that both start
2218from 4.43.
2219
2220I have left the 4.50 change log unchanged; it contains all the changes since
22214.43. The change log for 4.44 is below; many of its items are identical to
2222those for 4.50. This seems to be the most sensible way to preserve the
2223historical information.
2224
2225
f7b63901 2226Exim version 4.50
495ae4b0
PH
2227-----------------
2228
5fe762f6
PH
2229 1. Minor wording change to the doc/README.SIEVE file.
2230
139059f6 2231 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2232 computation of the current number of files was incorrect.
495ae4b0 2233
7086e875
PH
2234 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2235 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2236 place.
2237
35af9f61
PH
2238 4. Give more explanation in the error message when the command for a transport
2239 filter fails to execute.
2240
b668c215
PH
2241 5. There are several places where Exim runs a non-Exim command in a
2242 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2243 was being done only for the command run by the queryprogram router. It is
2244 now done for all such subprocesses. The other cases are: ${run, transport
2245 filters, and the commands run by the lmtp and pipe transports.
2246
a494b1e1
PH
2247 6. Added CONFIGURE_GROUP build-time option.
2248
2249 7. Some older OS have a limit of 256 on the maximum number of file
2250 descriptors. Exim was using setrlimit() to set 1000 as a large value
2251 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2252 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2253
c5fcb476
PH
2254 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2255 was an oversight, and furthermore, ever since the addition of extra
2256 controls (e.g. 4.43/32), the checks on when to allow different forms of
2257 "control" were broken. There should now be diagnostics for all cases when a
2258 control that does not make sense is encountered.
2259
69358f02
PH
2260 9. Added the /retain_sender option to "control=submission".
2261
5be20824
PH
226210. $recipients is now available in the predata ACL (oversight).
2263
eb2c0248
PH
226411. Tidy the search cache before the fork to do a delivery from a message
2265 received from the command line. Otherwise the child will trigger a lookup
2266 failure and thereby defer the delivery if it tries to use (for example) a
2267 cached ldap connection that the parent has called unbind on.
2268
2a3eea10
PH
226912. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2270 of $address_data from the recipient verification was clobbered by the
2271 sender verification.
2272
227313. The value of address_data from a sender verification is now available in
2274 $sender_address_data in subsequent conditions in the ACL statement.
2275
23c7ff99
PH
227614. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2277
4deaf07d
PH
227815. Added a new option "connect=<time>" to callout options, to set a different
2279 connection timeout.
2280
926e1192
PH
228116. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2282 was its contents. (It was OK if the option was not defined at all.)
2283
650edc6f
PH
228417. A "Completed" log line is now written for messages that are removed from
2285 the spool by the -Mrm option.
2286
2c7db3f5
PH
228718. New variables $sender_verify_failure and $recipient_verify_failure contain
2288 information about exactly what failed.
2289
3d235903
PH
229019. Added -dd to debug only the daemon process.
2291
7c7ad977
PH
229220. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2293 handles timeouts, both on the server side and network timeouts. Renamed the
2294 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2295
981756db
PH
229621. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2297 It is now set to "smtps".
2298
d4eb88df
PH
229922. $host_address is now set to the target address during the checking of
2300 ignore_target_hosts.
2301
230223. When checking ignore_target_hosts for an ipliteral router, no host name was
2303 being passed; this would have caused $sender_host_name to have been used if
2304 matching the list had actually called for a host name (not very likely,
2305 since this list is usually IP addresses). A host name is now passed as
2306 "[x.x.x.x]".
2307
7d468ab8
PH
230824. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2309 code that specifies a non-restarting handler (typically sigaction() in
2310 modern systems) in an attempt to fix a rare and obscure crash bug.
2311
231225. Narrowed the window for a race in the daemon that could cause it to ignore
2313 SIGCHLD signals. This is not a major problem, because they are used only to
2314 wake it up if nothing else does.
2315
62c0818f
PH
231626. A malformed maildirsize file could cause Exim to calculate negative values
2317 for the mailbox size or file count. Odd effects could occur as a result.
2318 The maildirsize information is now recalculated if the size or filecount
2319 end up negative.
2320
26034054
PH
232127. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2322 support for a long time. Removed HAVE_SYS_VFS_H.
2323
af66f652
PH
232428. Installed the latest version of exipick from John Jetmore.
2325
90af77f4
PH
232629. In an address list, if the pattern was not a regular expression, an empty
2327 subject address (from a bounce message) matched only if the pattern was an
2328 empty string. Non-empty patterns were not even tested. This was the wrong
2329 because it is perfectly reasonable to use an empty address as part of a
2330 database query. An empty address is now tested by patterns that are
2331 lookups. However, all the other forms of pattern expect the subject to
2332 contain a local part and a domain, and therefore, for them, an empty
2333 address still always fails if the pattern is not itself empty.
2334
d8ef3577
PH
233530. Exim went into a mad DNS loop when attempting to do a callout where the
2336 host was specified on an smtp transport, and looking it up yielded more
2337 than one IP address.
2338
5cb8cbc6
PH
233931. Re-factored the code for checking spool and log partition space into a
2340 function that finds that data and another that does the check. The former
2341 is then used to implement four new variables: $spool_space, $log_space,
2342 $spool_inodes, and $log_inodes.
2343
14702f5b
PH
234432. The RFC2047 encoding function was originally intended for short strings
2345 such as real names; it was not keeping to the 75-character limit for
2346 encoded words that the RFC imposes. It now respects the limit, and
2347 generates multiple encoded words if necessary. To be on the safe side, I
2348 have increased the buffer size for the ${rfc2047: expansion operator from
2349 1024 to 2048 bytes.
2350
063b1e99
PH
235133. It is now permitted to omit both strings after an "if" condition; if the
2352 condition is true, the result is "true". As before, when the second string
2353 is omitted, a false condition yields an empty string. This makes it less
2354 cumbersome to write custom ACL and router conditions.
2355
652e1b65
PH
235634. Failure to deliver a bounce message always caused it to be frozen, even if
2357 there was an errors_to setting on the router. The errors_to setting is now
2358 respected.
2359
6f0c9a4f
PH
236035. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2361 canonical form (fully expanded) before being placed in
2362 $sender_host_address.
2363
33397d19
PH
236436. The table in the code that translates DNS record types into text (T_A to
2365 "A" for instance) was missing entries for NS and CNAME. It is just possible
2366 that this could have caused confusion if both these types were looked up
2367 for the same domain, because the text type is used as part of Exim's
2368 per-process caching. But the chance of anyone hitting this buglet seems
2369 very small.
2370
7bb56e1f
PH
237137. The dnsdb lookup has been extended in a number of ways.
2372
2373 (1) There is a new type, "zns", which walks up the domain tree until it
2374 finds some nameserver records. It should be used with care.
2375
ea3bc19b
PH
2376 (2) There is a new type, "mxh", which is like "mx" except that it returns
2377 just the host names, not the priorities.
2378
2379 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2380 looked up. The behaviour when one of the lookups defers can be
2381 controlled by a keyword.
7bb56e1f 2382
ea3bc19b 2383 (4) It is now possible to specify the separator character for use when
7bb56e1f 2384 multiple records are returned.
33397d19 2385
0bcb2a0e
PH
238638. The dnslists ACL condition has been extended: it is now possible to supply
2387 a list of IP addresses and/or domains to be looked up in a particular DNS
2388 domain.
2389
2ac0e484
PH
239039. Added log_selector=+queue_time_overall.
2391
4e1fde53
PH
239240. When running the queue in the test harness, wait just a tad after forking a
2393 delivery process, to get repeatability of debugging output.
2394
de365ded
PH
239541. Include certificate and key file names in error message when GnuTLS fails
2396 to set them up, because the GnuTLS error message doesn't include the name
2397 of the failing file when there is a problem reading it.
2398
f05da2e8
PH
239942. Allow both -bf and -bF in the same test run.
2400
d6453af2
PH
240143. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2402
f7b63901
PH
240344. The "Exiscan patch" is now merged into the mainline Exim source.
2404
240545. Sometimes the final signoff response after QUIT could fail to get
2406 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2407 < 0 before doing a fflush(). This bug looks as though it goes back to the
2408 introduction of TLS in release 3.20, but "sometimes" must have been rare
2409 because the tests only now provoked it.
2410
a444213a
PH
241146. Reset the locale to "C" after calling embedded Perl, in case it was changed
2412 (this can affect the format of dates).
2413
0ec020ea
PH
241447. exim_tidydb, when checking for the continued existence of a message for
2415 which it has found a message-specific retry record, was not finding
2416 messages that were in split spool directories. Consequently, it was
2417 deleting retry records that should have stayed in existence.
2418
b1206957
PH
241948. Steve fixed some bugs in eximstats.
2420
242149. The SPA authentication driver was not abandoning authentication and moving
2422 on to the next authenticator when an expansion was forced to fail,
2423 contradicting the general specification for all authenticators. Instead it
2424 was generating a temporary error. It now behaves as specified.
2425
26dd5a95
PH
242650. The default ordering of permitted cipher suites for GnuTLS was pessimal
2427 (the order specifies the preference for clients). The order is now AES256,
2428 AES128, 3DES, ARCFOUR128.
2429
343b2385
PH
243051. Small patch to Sieve code - explicitly set From: when generating an
2431 autoreply.
2432
1c5466b9
PH
243352. Exim crashed if a remote delivery caused a very long error message to be
2434 recorded - for instance if somebody sent an entire SpamAssassin report back
2435 as a large number of 550 error lines. This bug was coincidentally fixed by
2436 increasing the size of one of Exim's internal buffers (big_buffer) that
2437 happened as part of the Exiscan merge. However, to be on the safe side, I
2438 have made the code more robust (and fixed the comments that describe what
2439 is going on).
2440
55ee9ee3
PH
244153. Now that there can be additional text after "Completed" in log lines (if
2442 the queue_time_overall log selector is set), a one-byte patch to exigrep
2443 was needed to allow it to recognize "Completed" as not the last thing in
2444 the line.
2445
d38f8232
PH
244654. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2447 patch that reportedly fixes this has been added. I am not expert enough to
2448 create a test for it. This is what the patch creator wrote:
2449
2450 "I found a little strange behaviour of ldap code when working with
2451 Windows 2003 AD Domain, where users was placed in more than one
2452 Organization Units. When I tried to give exim partial DN, the exit code
2453 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2454 But simultaneously result of request was absolutely normal ldap result,
2455 so I produce this patch..."
2456
3295e65b
PH
2457 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2458 REFERENCE, so I have modified the code to exclude the patch when that macro
2459 is not defined.
2460
7102e136
PH
246155. Some experimental protocols are using DNS PTR records for new purposes. The
2462 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2463 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2464 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2465 CAN-2005-0021
7102e136 2466
3ca0ba97
PH
246756. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2468
c2bcbe20
PH
246957. Double the size of the debug message buffer (to 2048) so that more of very
2470 long debug lines gets shown.
2471
18ce445d
PH
247258. The exicyclog utility now does better if the number of log files to keep
2473 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2474
1f5b4c3d
PH
247559. Two changes related to the smtp_active_hostname option:
2476
2477 (1) $smtp_active_hostname is now available as a variable.
2478 (2) The default for smtp_banner uses $smtp_active_hostname instead
2479 of $primary_hostname.
2480
b975ba52
PH
248160. The host_aton() function is supposed to be passed a string that is known
2482 to be a valid IP address. However, in the case of IPv6 addresses, it was
2483 not checking this. This is a hostage to fortune. Exim now panics and dies
2484 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2485 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2486 components; fortuitously, this particular loophole had already been fixed
2487 by change 4.50/55 above.
2488
2489 If there are any other similar loopholes, the new check in host_aton()
2490 itself should stop them being exploited. The report I received stated that
2491 data on the command line could provoke the exploit when Exim was running as
2492 exim, but did not say which command line option was involved. All I could
2493 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2494 running as the user.
ea3a6f44 2495 CAN-2005-0021
85b87bc2
PH
2496
249761. There was a buffer overflow vulnerability in the SPA authentication code
2498 (which came originally from the Samba project). I have added a test to the
2499 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2500 CAN-2005-0022
b975ba52 2501
17ffcae7
PH
250262. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2503 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2504
d95f9fdb
PH
250563. The daemon start-up calls getloadavg() while still root for those OS that
2506 need the first call to be done as root, but it missed one case: when
2507 deliver_queue_load_max is set with deliver_drop_privilege. This is
2508 necessary for the benefit of the queue runner, because there is no re-exec
2509 when deliver_drop_privilege is set.
2510
86b8287f
PH
251164. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2512 This has been fixed.
2513
60dc5e56
PH
251465. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2515 was in use, was not putting the data itself into the right store pool;
2516 consequently, it could be overwritten for a subsequent message in the same
2517 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2518 the caching.)
2519
533244af
PH
252066. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2521
a5a28604
PH
252267. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2523 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2524 the function were treating the return as a boolean value, which happened to
2525 work because 0=false and not-0=true, but is not correct code.
2526
7e634d24
PH
252768. The host_aton() function was not handling scoped IPv6 addresses (those
2528 with, for example, "%eth0" on the end) correctly.
2529
3e11c26b
PH
253069. Fixed some compiler warnings in acl.c for the bitmaps specified with
2531 negated items (that is, ~something) in unsigned ints. Some compilers
2532 apparently mutter when there is no cast.
2533
6729cf78
PH
253470. If an address verification called from an ACL failed, and did not produce a
2535 user-specific message (i.e. there was only a "system" message), nothing was
2536 put in $acl_verify_message. In this situation, it now puts the system
2537 message there.
2538
00f00ca5
PH
253971. Change 4.23/11 added synchronization checking at the start of an SMTP
2540 session; change 4.31/43 added the unwanted input to the log line - except
2541 that it did not do this in the start of session case. It now does.
2542
c9bdd01c
PH
254372. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2544 This is wrong and can cause the other end to generate a synchronization
2545 error if it is another Exim or anything else that does the synchronization
2546 check. A QUIT command is no longer sent after a timeout.
2547
d43194df
PH
254873. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2549 during host lookups.
2550
fe5b5d0b
PH
255174. The defer_ok option of callout verification was not working if it was used
2552 when verifying addresses in header lines, that is, for this case:
2553
2554 verify = header_sender/callout=defer_ok
2555
76a2d7ba
PH
255675. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2557 those file descriptors could be used for SMTP connections. If anything
2558 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2559 could be sent to the SMTP client, causing chaos. The daemon now opens
2560 stdin, stdout, and stderr to /dev/null when it puts itself into the
2561 background.
2562
256376. Arrange for output from Perl's "warn" command to be written to Exim's main
2564 log by default. The user can override this with suitable Perl magic.
2565
04f7d5b9
PH
256677. The use of log_message on a "discard" ACL verb, which is supposed to add to
2567 the log message when discard triggers, was not working for the DATA ACL or
2568 for the non-SMTP ACL.
2569
bc60667e
PH
257078. Error message wording change in sieve.c.
2571
bb6e88ff
PH
257279. If smtp_accept_max_per_host was set, the number of connections could be
2573 restricted to fewer than expected, because the daemon was trying to set up
2574 a new connection before checking whether the processes handling previous
2575 connections had finished. The check for completed processes is now done
2576 earlier. On busy systems, this bug wouldn't be noticed because something
2577 else would have woken the daemon, and it would have reaped the completed
2578 process earlier.
2579
1e70f85b
PH
258080. If a message was submitted locally by a user whose login name contained one
2581 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2582 It caused a spool format error. I have fixed the spool reading code. A
2583 related problem was that the "from" clause in the Received: line became
2584 illegal because of the space(s). It is now covered by ${quote_local_part.
2585
258681. Included the latest eximstats from Steve (adds average sizes to HTML Top
2587 tables).
2588
4e01f9d6
PH
258982. Updated OS/Makefile-AIX as per message from Mike Meredith.
2590
1ee1cef2
PH
259183. Patch from Sieve maintainer to fix unterminated string problem in
2592 "vacation" handling.
2593
6e2b4ccc
PH
259484. Some minor changes to the Linux configuration files to help with other
2595 OS variants using glibc.
2596
8e669ac1
PH
259785. One more patch for Sieve to update vacation handling to latest spec.
2598
495ae4b0 2599
bbe902f0
PH
2600----------------------------------------------------
2601See the note above about the 4.44 and 4.50 releases.
2602----------------------------------------------------
2603
2604
2605Exim version 4.44
2606-----------------
2607
2608 1. Change 4.43/35 introduced a bug that caused file counts to be
2609 incorrectly computed when quota_filecount was set in an appendfile
2610 transport
2611
2612 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2613 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2614 place.
2615
2616 3. Give more explanation in the error message when the command for a transport
2617 filter fails to execute.
2618
2619 4. There are several places where Exim runs a non-Exim command in a
2620 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2621 was being done only for the command run by the queryprogram router. It is
2622 now done for all such subprocesses. The other cases are: ${run, transport
2623 filters, and the commands run by the lmtp and pipe transports.
2624
2625 5. Some older OS have a limit of 256 on the maximum number of file
2626 descriptors. Exim was using setrlimit() to set 1000 as a large value
2627 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2628 systems. I've change it so that if it can't get 1000, it tries for 256.
2629
2630 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2631 was an oversight, and furthermore, ever since the addition of extra
2632 controls (e.g. 4.43/32), the checks on when to allow different forms of
2633 "control" were broken. There should now be diagnostics for all cases when a
2634 control that does not make sense is encountered.
2635
2636 7. $recipients is now available in the predata ACL (oversight).
2637
2638 8. Tidy the search cache before the fork to do a delivery from a message
2639 received from the command line. Otherwise the child will trigger a lookup
2640 failure and thereby defer the delivery if it tries to use (for example) a
2641 cached ldap connection that the parent has called unbind on.
2642
2643 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2644 of $address_data from the recipient verification was clobbered by the
2645 sender verification.
2646
264710. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2648 was its contents. (It was OK if the option was not defined at all.)
2649
265011. A "Completed" log line is now written for messages that are removed from
2651 the spool by the -Mrm option.
2652
265312. $host_address is now set to the target address during the checking of
2654 ignore_target_hosts.
2655
265613. When checking ignore_target_hosts for an ipliteral router, no host name was
2657 being passed; this would have caused $sender_host_name to have been used if
2658 matching the list had actually called for a host name (not very likely,
2659 since this list is usually IP addresses). A host name is now passed as
2660 "[x.x.x.x]".
2661
266214. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2663 code that specifies a non-restarting handler (typically sigaction() in
2664 modern systems) in an attempt to fix a rare and obscure crash bug.
2665
266615. Narrowed the window for a race in the daemon that could cause it to ignore
2667 SIGCHLD signals. This is not a major problem, because they are used only to
2668 wake it up if nothing else does.
2669
267016. A malformed maildirsize file could cause Exim to calculate negative values
2671 for the mailbox size or file count. Odd effects could occur as a result.
2672 The maildirsize information is now recalculated if the size or filecount
2673 end up negative.
2674
267517. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2676 support for a long time. Removed HAVE_SYS_VFS_H.
2677
ea3a6f44 267818. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2679
268019. Allow an empty sender to be matched against a lookup in an address list.
2681 Previously the only cases considered were a regular expression, or an
2682 empty pattern.
2683
268420. Exim went into a mad DNS lookup loop when doing a callout where the
2685 host was specified on the transport, if the DNS lookup yielded more than
2686 one IP address.
2687
ea3a6f44
NM
268821. The RFC2047 encoding function was originally intended for short strings
2689 such as real names; it was not keeping to the 75-character limit for
2690 encoded words that the RFC imposes. It now respects the limit, and
2691 generates multiple encoded words if necessary. To be on the safe side, I
2692 have increased the buffer size for the ${rfc2047: expansion operator from
2693 1024 to 2048 bytes.
bbe902f0 2694
ea3a6f44
NM
269522. Failure to deliver a bounce message always caused it to be frozen, even if
2696 there was an errors_to setting on the router. The errors_to setting is now
2697 respected.
bbe902f0
PH
2698
269923. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2700 canonical form (fully expanded) before being placed in
2701 $sender_host_address.
2702
270324. Updated eximstats to version 1.33
2704
ea3a6f44
NM
270525. Include certificate and key file names in error message when GnuTLS fails
2706 to set them up, because the GnuTLS error message doesn't include the name
2707 of the failing file when there is a problem reading it.
bbe902f0
PH
2708
270926. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2710 As per change 25.
bbe902f0 2711
ea3a6f44
NM
271227. Reset the locale to "C" after calling embedded Perl, in case it was changed
2713 (this can affect the format of dates).
bbe902f0 2714
ea3a6f44
NM
271528. exim_tidydb, when checking for the continued existence of a message for
2716 which it has found a message-specific retry record, was not finding
2717 messages that were in split spool directories. Consequently, it was
2718 deleting retry records that should have stayed in existence.
bbe902f0
PH
2719
272029. eximstats updated to version 1.35
2721 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2722 1.35 - bugfix such that pie charts by volume are generated correctly
2723
ea3a6f44
NM
272430. The SPA authentication driver was not abandoning authentication and moving
2725 on to the next authenticator when an expansion was forced to fail,
2726 contradicting the general specification for all authenticators. Instead it
2727 was generating a temporary error. It now behaves as specified.
bbe902f0 2728
ea3a6f44
NM
272931. The default ordering of permitted cipher suites for GnuTLS was pessimal
2730 (the order specifies the preference for clients). The order is now AES256,
2731 AES128, 3DES, ARCFOUR128.
bbe902f0 2732
ea3a6f44
NM
273331. Small patch to Sieve code - explicitly set From: when generating an
2734 autoreply.
bbe902f0 2735
ea3a6f44
NM
273632. Exim crashed if a remote delivery caused a very long error message to be
2737 recorded - for instance if somebody sent an entire SpamAssassin report back
2738 as a large number of 550 error lines. This bug was coincidentally fixed by
2739 increasing the size of one of Exim's internal buffers (big_buffer) that
2740 happened as part of the Exiscan merge. However, to be on the safe side, I
2741 have made the code more robust (and fixed the comments that describe what
2742 is going on).
bbe902f0 2743
ea3a6f44
NM
274433. Some experimental protocols are using DNS PTR records for new purposes. The
2745 keys for these records are domain names, not reversed IP addresses. The
2746 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2747 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2748 CAN-2005-0021
2749
ea3a6f44
NM
275034. The host_aton() function is supposed to be passed a string that is known
2751 to be a valid IP address. However, in the case of IPv6 addresses, it was
2752 not checking this. This is a hostage to fortune. Exim now panics and dies
2753 if the condition is not met. A case was found where this could be provoked
2754 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2755 components; fortuitously, this particular loophole had already been fixed
2756 by change 4.50/55 or 4.44/33 above.
2757
2758 If there are any other similar loopholes, the new check in host_aton()
2759 itself should stop them being exploited. The report I received stated that
2760 data on the command line could provoke the exploit when Exim was running as
2761 exim, but did not say which command line option was involved. All I could
2762 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2763 running as the user.
bbe902f0
PH
2764 CAN-2005-0021
2765
ea3a6f44
NM
276635. There was a buffer overflow vulnerability in the SPA authentication code
2767 (which came originally from the Samba project). I have added a test to the
2768 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2769 CAN-2005-0022
2770
ea3a6f44
NM
277136. The daemon start-up calls getloadavg() while still root for those OS that
2772 need the first call to be done as root, but it missed one case: when
2773 deliver_queue_load_max is set with deliver_drop_privilege. This is
2774 necessary for the benefit of the queue runner, because there is no re-exec
2775 when deliver_drop_privilege is set.
bbe902f0 2776
ea3a6f44
NM
277737. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2778 was in use, was not putting the data itself into the right store pool;
2779 consequently, it could be overwritten for a subsequent message in the same
2780 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2781 the caching.)
bbe902f0 2782
ea3a6f44
NM
278338. Sometimes the final signoff response after QUIT could fail to get
2784 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2785 < 0 before doing a fflush(). This bug looks as though it goes back to the
2786 introduction of TLS in release 3.20, but "sometimes" must have been rare
2787 because the tests only now provoked it.
bbe902f0
PH
2788
2789
495ae4b0
PH
2790Exim version 4.43
2791-----------------
2792
2793 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2794 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2795 Now it returns an integer. A number of calls were still expecting a T/F
2796 return. Fortuitously, in all cases, the tests worked in OK situations,
2797 which is the norm. However, things would have gone wrong on any write
2798 failures on the smtp file descriptor. This function is used when sending
2799 messages over SMTP and also when doing verify callouts.
2800
2801 2. When Exim is called to do synchronous delivery of a locally submitted
2802 message (the -odf or -odi options), it no longer closes stderr before doing
2803 the delivery.
2804
2805 3. Implemented the mua_wrapper option.
2806
2807 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2808
2809 5. Implemented the functions header_remove(), header_testname(),
2810 header_add_at_position(), and receive_remove_recipient(), and exported them
2811 to local_scan().
2812
2813 6. If an ACL "warn" statement specified the addition of headers, Exim already
2814 inserted X-ACL-Warn: at the start if there was no header name. However, it
2815 was not making this test for the second and subsequent header lines if
2816 there were newlines in the string. This meant that an invalid header could
2817 be inserted if Exim was badly configured.
2818
2819 7. Allow an ACL "warn" statement to add header lines at the start or after all
2820 the Received: headers, as well as at the end.
2821
2822 8. Added the rcpt_4xx retry error code.
2823
2824 9. Added postmaster_mailfrom=xxx to callout verification option.
2825
282610. Added mailfrom=xxxx to the callout verification option, for verify=
2827 header_sender only.
2828
282911. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2830 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2831
283212. Inserted some casts to stop certain compilers warning when using pointer
2833 differences as field lengths or precisions in printf-type calls (mostly
2834 affecting debugging statements).
2835
283613. Added optional readline() support for -be (dynamically loaded).
2837
283814. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2839 same clock tick as a message's arrival, so that its received time was the
2840 same as the "first fail" time on the retry record, and that message
2841 remained on the queue past the ultimate address timeout, every queue runner
2842 would try a delivery (because it was past the ultimate address timeout) but
2843 after another failure, the ultimate address timeout, which should have then
2844 bounced the address, did not kick in. This was a "< instead of <=" error;
2845 in most cases the first failure would have been in the next clock tick
2846 after the received time, and all would be well.
2847
284815. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2849 being recognized when the domain list was tested by the match_domain
2850 condition in an expansion string.
2851
285216. Added the ${str2b64: operator.
2853
285417. Exim was always calling setrlimit() to set a large limit for the number of
2855 processes, without checking whether the existing limit was already
2856 adequate. (It did check for the limit on file descriptors.) Furthermore,
2857 errors from getrlimit() and setrlimit() were being ignored. Now they are
2858 logged to the main and panic logs, but Exim does carry on, to try to do its
2859 job under whatever limits there are.
2860
286118. Imported PCRE 5.0.
2862
286319. Trivial typo in log message " temporarily refused connection" (the leading
2864 space).
2865
286620. If the log selector return_path_on_delivery was set and an address was
2867 redirected to /dev/null, the delivery process crashed because it assumed
2868 that a return path would always be set for a "successful" delivery. In this
2869 case, the whole delivery is bypassed as an optimization, and therefore no
2870 return path is set.
2871
287221. Internal re-arrangement: the function for sending a challenge and reading
2873 a response while authentication was assuming a zero-terminated challenge
2874 string. It's now changed to take a pointer and a length, to allow for
2875 binary data in such strings.
2876
287722. Added the cyrus_sasl authenticator (code supplied by MBM).
2878
287923. Exim was not respecting finduser_retries when seeking the login of the
2880 uid under which it was called; it was always trying 10 times. (The default
2881 setting of finduser_retries is zero.) Also, it was sleeping after the final
2882 failure, which is pointless.
2883
288424. Implemented tls_on_connect_ports.
2885
288625. Implemented acl_smtp_predata.
2887
288826. If the domain in control=submission is set empty, Exim assumes that the
2889 authenticated id is a complete email address when it generates From: or
2890 Sender: header lines.
2891
289227. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2893 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2894 chown and chgrp in /bin and hostname in /usr/bin.
2895
289628. Exim was keeping the "process log" file open after each use, just as it
2897 does for the main log. This opens the possibility of it remaining open for
2898 long periods when the USR1 signal hits a daemon. Occasional processlog
2899 errors were reported, that could have been caused by this. Anyway, it seems
2900 much more sensible not to leave this file open at all, so that is what now
2901 happens.
2902
290329. The long-running daemon process does not normally write to the log once it
2904 has entered its main loop, and it closes the log before doing so. This is
2905 so that log files can straightforwardly be renamed and moved. However,
2906 there are a couple of unusual error situations where the daemon does write
2907 log entries, and I had neglected to close the log afterwards.
2908
290930. The text of an SMTP error response that was received during a remote
2910 delivery was being truncated at 512 bytes. This is too short for some of
2911 the long messages that one sometimes sees. I've increased the limit to
2912 1024.
2913
291431. It is now possible to make retry rules that apply only when a message has a
2915 specific sender, in particular, an empty sender.
2916
291732. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2918 it possible to be selective about when SMTP synchronization is enforced.
2919
292033. Added "control = caseful_local_part" and "control = "caselower_local_part".
2921
292232. Implemented hosts_connection_nolog.
2923
292433. Added an ACL for QUIT.
2925
292634. Setting "delay_warning=" to disable warnings was not working; it gave a
2927 syntax error.
2928
292935. Added mailbox_size and mailbox_filecount to appendfile.
2930
293136. Added control = no_multiline_responses to ACLs.
2932
293337. There was a bug in the logic of the code that waits for the clock to tick
2934 in the case where the clock went backwards by a substantial amount such
2935 that the microsecond fraction of "now" was more than the microsecond
2936 fraction of "then" (but the whole seconds number was less).
2937
293838. Added support for the libradius Radius client library this is found on
2939 FreeBSD (previously only the radiusclient library was supported).
2940
2941
2942Exim version 4.42
2943-----------------
2944
2945 1. When certain lookups returned multiple values in the form name=value, the
2946 quoting of the values was not always being done properly. Specifically:
2947 (a) If the value started with a double quote, but contained no whitespace,
2948 it was not quoted.
2949 (b) If the value contained whitespace other than a space character (i.e.
2950 tabs or newlines or carriage returns) it was not quoted.
2951 This fix has been applied to the mysql and pgsql lookups by writing a
2952 separate quoting function and calling it from the lookup code. The fix
2953 should probably also be applied to nisplus, ibase and oracle lookups, but
2954 since I cannot test any of those, I have not disturbed their existing code.
2955
2956 2. A hit in the callout cache for a specific address caused a log line with no
2957 reason for rejecting RCPT. Now it says "Previous (cached) callout
2958 verification failure".
2959
2960 3. There was an off-by-one bug in the queryprogram router. An over-long
2961 return line was truncated at 256 instead of 255 characters, thereby
2962 overflowing its buffer with the terminating zero. As well as fixing this, I
2963 have increased the buffer size to 1024 (and made a note to document this).
2964
2965 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2966 when Exim is waiting for an SMTP response from a remote server, Exim
2967 restarts its select() call on the socket, thereby resetting its timeout.
2968 This is not a problem when such interrupts are rare. Somebody set up a cron
2969 job to run exiwhat every 2 minutes, which is less than the normal select()
2970 timeout (5 or 10 minutes). This meant that the select() timeout never
2971 kicked in because it was always reset. I have fixed this by comparing the
2972 time when an interrupt arrives with the time at the start of the first call
2973 to select(). If more time than the timeout has elapsed, the interrupt is
2974 treated as a timeout.
2975
2976 5. Some internal re-factoring in preparation for the addition of Sieve
2977 extensions (by MH). In particular, the "personal" test is moved to a
2978 separate function, and given an option for scanning Cc: and Bcc: (which is
2979 not set for Exim filters).
2980
2981 6. When Exim created an email address using the login of the caller as the
2982 local part (e.g. when creating a From: or Sender: header line), it was not
2983 quoting the local part when it contained special characters such as @.
2984
2985 7. Installed new OpenBSD configuration files.
2986
2987 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2988 try to make them clearer.
2989
2990 9. Callout options, other than the timeout value, were being ignored when
2991 verifying sender addresses in header lines. For example, when using
2992
2993 verify = header_sender/callout=no_cache
2994
2995 the cache was (incorrectly) being used.
2996
299710. Added a missing instance of ${EXE} to the exim_install script; this affects
2998 only the Cygwin environment.
2999
300011. When return_path_on_delivery was set as a log selector, if different remote
3001 addresses in the same message used different return paths and parallel
3002 remote delivery occurred, the wrong values would sometimes be logged.
3003 (Whenever a remote delivery process finished, the return path value from
3004 the most recently started remote delivery process was logged.)
3005
300612. RFC 3848 specifies standard names for the "with" phrase in Received: header
3007 lines when AUTH and/or TLS are in use. This is the "received protocol"
3008 field. Exim used to use "asmtp" for authenticated SMTP, without any
3009 indication (in the protocol name) for TLS use. Now it follows the RFC and
3010 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3011 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3012 names appear in log lines as well as in Received: header lines.
3013
301413. Installed MH's patches for Sieve to add the "copy" and "vacation"
3015 extensions, and comparison tests, and to fix some bugs.
3016
301714. Changes to the "personal" filter test:
3018
3019 (1) The test was buggy in that it was just doing the equivalent of
3020 "contains" tests on header lines. For example, if a user's address was
3021 anne@some.where, the "personal" test would incorrectly be true for
3022
3023 To: susanne@some.where
3024
3025 This test is now done by extracting each address from the header in turn,
3026 and checking the entire address. Other tests that are part of "personal"
3027 are now done using regular expressions (for example, to check local parts
3028 of addresses in From: header lines).
3029
3030 (2) The list of non-personal local parts in From: addresses has been
3031 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3032 taken from the Sieve specification recommendations.
3033
3034 (3) If the message contains any header line starting with "List-" it is
3035 treated as non-personal.
3036
3037 (4) The test for "circular" in the Subject: header line has been removed
3038 because it now seems ill-conceived.
3039
304015. Minor typos in src/EDITME comments corrected.
3041
304216. Installed latest exipick from John Jetmore.
3043
304417. If headers_add on a router specified a text string that was too long for
3045 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3046 of string_sprintf() is now avoided.
3047
304818. $message_body_size was not set (it was always zero) when running the DATA
3049 ACL and the local_scan() function.
3050
305119. For the "mail" command in an Exim filter, no default was being set for
3052 the once_repeat time, causing a random time value to be used if "once" was
3053 specified. (If the value happened to be <= 0, no repeat happened.) The
3054 default is now 0s, meaning "never repeat". The "vacation" command was OK
3055 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3056 (I found it when inspecting the code).
3057
305820. There is now an overall timeout for performing a callout verification. It
3059 defaults to 4 times the callout timeout, which applies to individual SMTP
3060 commands during the callout. The overall timeout applies when there is more
3061 than one host that can be tried. The timeout is checked before trying the
3062 next host. This prevents very long delays if there are a large number of
3063 hosts and all are timing out (e.g. when the network connections are timing
3064 out). The value of the overall timeout can be changed by specifying an
3065 additional sub-option for "callout", called "maxwait". For example:
3066
3067 verify = sender/callout=5s,maxwait=20s
3068
306921. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3070 to the end before writing, but this should make it even safer).
3071
307222. Exim was forgetting that it had advertised PIPELINING for the second and
3073 subsequent messages on an SMTP connection. It was also not resetting its
3074 memory on STARTTLS and an internal HELO.
3075
307623. When Exim logs an SMTP synchronization error within a session, it now
3077 records whether PIPELINING has been advertised or not.
3078
307924. Added 3 instances of "(long int)" casts to time_t variables that were being
3080 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3081 rather than long int.
3082
308325. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3084
308526. Added the never_mail option to autoreply.
3086
3087
3088Exim version 4.41
3089-----------------
3090
3091 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3092 crash if the getsockname() call failed; this can happen if a connection is
3093 closed very soon after it is established. The problem was simply in the
3094 order in which certain operations were done, causing Exim to try to write
3095 to the SMTP stream before it had set up the file descriptor. The bug has
3096 been fixed by making things happen in the correct order.
3097
3098
3099Exim version 4.40
3100-----------------
3101
3102 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3103 before the connection was closed, thus losing the rejection response.
3104
3105 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3106 some early Solaris releases, but causes trouble in current releases where
3107 socklen_t is defined.
3108
3109 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3110 always exist.
3111
3112 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3113 configured.
3114
3115 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3116 that releasing the top of it at the end releases what was used for sub-
3117 expansions (unless the block got too big). However, discard this block if
3118 the first thing is a variable or header, so that we can use its block when
3119 it is dynamic (useful for very large $message_headers, for example).
3120
3121 6. Lookups now cache *every* query, not just the most recent. A new, separate
3122 store pool is used for this. It can be recovered when all lookup caches are
3123 flushed. Lookups now release memory at the end of their result strings.
3124 This has involved some general refactoring of the lookup sources.
3125
3126 7. Some code has been added to the store_xxx() functions to reduce the amount
3127 of flapping under certain conditions.
3128
3129 8. log_incoming_interface used to affect only the <= reception log lines. Now
3130 it causes the local interface and port to be added to several more SMTP log
3131 lines, for example "SMTP connection from", and rejection lines.
3132
3133 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3134
313510. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3136
313711. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3138 could be overwritten at the end of the current message (or the start of a
3139 new message if it was set in a HELO ACL). The value is now preserved for
3140 the duration of the SMTP connection.
3141
314212. If a transport had a headers_rewrite setting, and a matching header line
3143 contained an unqualified address, that address was qualified, even if it
3144 did not match any rewriting rules. The underlying bug was that the values
3145 of the flags that permit the existence of unqualified sender and recipient
3146 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3147 non-local messages, and by -bnq for local messages) were not being
3148 preserved with the message after it was received.
3149
315013. When Exim was logging an SMTP synchronization error, it could sometimes log
3151 "next input=" as part of the text comprising the host identity instead of
3152 the correct text. The code was using the same buffer for two different
3153 strings. However, depending on which order the printing function evaluated
3154 its arguments, the bug did not always show up. Under Linux, for example, my
3155 test suite worked just fine.
3156
315714. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3158 doesn't work with some older versions of Perl. It has been changed to "my",
3159 which in any case is probably the better facility to use.
3160
316115. A really picky compiler found some instances of statements for creating
3162 error messages that either had too many or two few arguments for the format
3163 string.
3164
316516. The size of the buffer for calls to the DNS resolver has been increased
3166 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3167 for addresses that have a lot of PTR records. This alleviates a problem; it
3168 does not fully solve it.
3169
317017. A dnsdb lookup for PTR records that receives more data than will fit in the
3171 buffer now truncates the list and logs the incident, which is the same
3172 action as happens when Exim is looking up a host name and its aliases.
3173 Previously in this situation something unpredictable would happen;
3174 sometimes it was "internal error: store_reset failed".
3175
317618. If a server dropped the connection unexpectedly when an Exim client was
3177 using GnuTLS and trying to read a response, the client delivery process
3178 crashed while trying to generate an error log message.
3179
318019. If a "warn" verb in an ACL added multiple headers to a message in a single
3181 string, for example:
3182
3183 warn message = H1: something\nH2: something
3184
3185 the text was added as a single header line from Exim's point of view
3186 though it ended up OK in the delivered message. However, searching for the
3187 second and subsequent header lines using $h_h2: did not work. This has been
3188 fixed. Similarly, if a system filter added multiple headers in this way,
3189 the routers could not see them.
3190
319120. Expanded the error message when iplsearch is called with an invalid key to
3192 suggest using net-iplsearch in a host list.
3193
319421. When running tests using -bh, any delays imposed by "delay" modifiers in
3195 ACLs are no longer actually imposed (and a message to that effect is
3196 output).
3197
319822. If a "gecos" field in a passwd entry contained escaped characters, in
3199 particular, if it contained a \" sequence, Exim got it wrong when building
3200 a From: or a Sender: header from that name. A second bug also caused
3201 incorrect handling when an unquoted " was present following a character
3202 that needed quoting.
3203
320423. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3205 was not being matched caselessly.
3206
320724. Arranged for all hyphens in the exim.8 source to be escaped with
3208 backslashes.
3209
321025. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3211 properly. Recipient callout cache records were still being keyed to include
3212 the sender, even when use_sender was set false. This led to far more
3213 callouts that were necessary. The sender is no longer included in the key
3214 when use_sender is false.
3215
321626. Added "control = submission" modifier to ACLs.
3217
321827. Added the ${base62d: operator to decode base 62 numbers.
3219
322028. dnsdb lookups can now access SRV records.
3221
322229. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3223 the configuration file.
3224
322530. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3226 (-v) mode. This makes the output for a verbose queue run more intelligible.
3227
322831. Added a use_postmaster feature to recipient callouts.
3229
323032. Added the $body_zerocount variable, containing the number of binary zero
3231 bytes in the message body.
3232
323333. The time of last modification of the "new" subdirectory is now used as the
3234 "mailbox time last read" when there is a quota error for a maildir
3235 delivery.
3236
323734. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3238
323935. Added +ignore_unknown as a special item in host lists.
3240
324136. Code for decoding IPv6 addresses in host lists is now included, even if
3242 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3243 address was recognized as an IP address, but was then not correctly decoded
3244 into binary, causing unexpected and incorrect effects when compared with
3245 another IP address.
3246
3247
3248Exim version 4.34
3249-----------------
3250
3251 1. Very minor rewording of debugging text in manualroute to say "list of
3252 hosts" instead of "hostlist".
3253
3254 2. If verify=header_syntax was set, and a header line with an unqualified
3255 address (no domain) and a large number of spaces between the end of the
3256 name and the colon was received, the reception process suffered a buffer
3257 overflow, and (when I tested it) crashed. This was caused by some obsolete
3258 code that should have been removed. The fix is to remove it!
3259
3260 3. When running in the test harness, delay a bit after writing a bounce
3261 message to get a bit more predictability in the log output.
3262
3263 4. Added a call to search_tidyup() just before forking a reception process. In
3264 theory, someone could use a lookup in the expansion of smtp_accept_max_
3265 per_host which, without the tidyup, could leave open a database connection.
3266
3267 5. Added the variables $recipient_data and $sender_data which get set from a
3268 lookup success in an ACL "recipients" or "senders" condition, or a router
3269 "senders" option, similar to $domain_data and $local_part_data.
3270
3271 6. Moved the writing of debug_print from before to after the "senders" test
3272 for routers.
3273
3274 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3275 problems for message scanning, either using a data ACL, or using
3276 local_scan() because the Received: header was not generated till after they
3277 were called (in order to set the time as the time of reception completion).
3278 I have revised the way this works. The header is now generated after the
3279 body is received, but before the ACL or local_scan() are called. After they
3280 are run, the timestamp in the header is updated.
3281
3282
3283Exim version 4.33
3284-----------------
3285
3286 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3287 before starting a queue runner without re-exec. This happened only when
3288 deliver_drop_privilege was set or when the Exim user was set to root. The
3289 effect of the bug was that timeouts during subsequent deliveries caused
3290 crashes instead of being properly handled. The handler is now left at its
3291 default (and expected) setting.
3292
3293 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3294 message, again when deliver_drop_privilege is set or Exim is run as root.
3295 The bug described in (1) was not present in this case, but the tidying up
3296 of the other signals was missing. I have made the two cases consistent.
3297
3298 3. The ignore_target_hosts setting on a manualroute router was being ignored
3299 for hosts that were looked up using the /MX notation.
3300
3301 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3302 in domain lists.
3303
3304 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3305 operated on the sender address. After changing the $sender_address to <>
3306 for the sender address verify, Exim was re-instated it as the original
3307 (before rewriting) address, but remembering that it had rewritten it, so it
3308 wasn't rewriting it again. This bug also had the effect of breaking the
3309 sender address verification caching when the sender address was rewritten.
3310
3311 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3312 This has been changed so that if the ip literal address matches
3313 ignore_target_hosts, the router declines.
3314
3315 7. Added expansion conditions match_domain, match_address, and match_local_
3316 part (NOT match_host).
3317
3318 8. The placeholder for the Received: header didn't have a length field set.
3319
3320 9. Added code to Exim itself and to exim_lock to test for a specific race
3321 condition that could lead to file corruption when using MBX delivery. The
3322 issue is with the lockfile that is created in /tmp. If this file is removed
3323 after a process has opened it but before that process has acquired a lock,
3324 there is the potential for a second process to recreate the file and also
3325 acquire a lock. This could lead to two Exim processes writing to the file
3326 at the same time. The added code performs the same test as UW imapd; it
3327 checks after acquiring the lock that its file descriptor still refers to
3328 the same named file.
3329
333010. The buffer for building added header lines was of fixed size, 8192 bytes.
3331 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3332 when Exim is built.
3333
333411. Added the smtp_active_hostname option. If used, this will typically be made
3335 to depend on the incoming interface address. Because $interface_address is
3336 not set up until the daemon has forked a reception process, error responses
3337 that can happen earlier (such as "too many connections") no longer contain
3338 a host name.
3339
334012. If an expansion in a condition on a "warn" statement fails because a lookup
3341 defers, the "warn" statement is abandoned, and the next ACL statement is
3342 processed. Previously this caused the whole ACL to be aborted.
3343
334413. Added the iplsearch lookup type.
3345
334614. Added ident_timeout as a log selector.
3347
334815. Added tls_certificate_verified as a log selector.
3349
335016. Added a global option tls_require_ciphers (compare the smtp transport
3351 option of the same name). This controls incoming TLS connections.
3352
335317. I finally figured out how to make tls_require_ciphers do a similar thing
3354 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3355 before starting the TLS session.
3356
335718. Tabs are now shown as \t in -bP output.
3358
335919. If the log selector return_path_on_delivery was set, Exim crashed when
3360 bouncing a message because it had too many Received: header lines.
3361
336220. If two routers both had headers_remove settings, and the first one included
3363 a superfluous trailing colon, the final name in the first list and the
3364 first name in the second list were incorrectly joined into one item (with a
3365 colon in the middle).
3366
3367
3368Exim version 4.32
3369-----------------
3370
3371 1. Added -C and -D options to the exinext utility, mainly to make it easier
3372 to include in the automated testing, but these could be helpful when
3373 multiple configurations are in use.
3374
3375 2. The exinext utility was not formatting the output nicely when there was
3376 an alternate port involved in the retry record key, nor when there was a
3377 message id as well (for retries that were specific to a specific message
3378 and a specific host). It was also confused by IPv6 addresses, because of
3379 the additional colons they contain. I have fixed the IPv4 problem, and
3380 patched it up to do a reasonable job for IPv6.
3381
3382 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3383 delivery, the log line now contains "pipelined" if PIPELINING was used.
3384
3385 4. An SMTP transport process used to panic and die if the bind() call to set
3386 an explicit outgoing interface failed. This has been changed; it is now
3387 treated in the same way as a connect() failure.
3388
3389 5. A reference to $sender_host_name in the part of a conditional expansion
3390 that was being skipped was still causing a DNS lookup. This no longer
3391 occurs.
3392
3393 6. The def: expansion condition was not recognizing references to header lines
3394 that used bh_ and bheader_.
3395
3396 7. Added the _cache feature to named lists.
3397
3398 8. The code for checking quota_filecount in the appendfile transport was
3399 allowing one more file than it should have been.
3400
3401 9. For compatibility with Sendmail, the command line option
3402
3403 -prval:sval
3404
3405 is equivalent to
3406
3407 -oMr rval -oMs sval
3408
3409 and sets the incoming protocol and host name (for trusted callers). The
3410 host name and its colon can be omitted when only the protocol is to be set.
3411 Note the Exim already has two private options, -pd and -ps, that refer to
3412 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3413 "s", but I don't think that's a major issue.
3414
341510. A number of refactoring changes to the code, none of which should affect
3416 Exim's behaviour:
3417
3418 (a) The number of logging options was getting close to filling up the
3419 32-bit word that was used as a bit map. I have split them into two classes:
3420 those that are passed in the argument to log_write(), and those that are
3421 only ever tested independently outside of that function. These are now in
3422 separate 32-bit words, so there is plenty of room for expansion again.
3423 There is no change in the user interface or the logging behaviour.
3424
3425 (b) When building, for example, log lines, the code previously used a
3426 macro that called string_cat() twice, in order to add two strings. This is
3427 not really sufficiently general. Furthermore, there was one instance where
3428 it was actually wrong because one of the argument was used twice, and in
3429 one call a function was used. (As it happened, calling the function twice
3430 did not affect the overall behaviour.) The macro has been replaced by a
3431 function that can join an arbitrary number of extra strings onto a growing
3432 string.
3433
3434 (c) The code for expansion conditions now uses a table and a binary chop
3435 instead of a serial search (which was left over from when there were very
3436 few conditions). Also, it now recognizes conditions like "pam" even when
3437 the relevant support is not compiled in: a suitably worded error message is
3438 given if an attempt is made to use such a condition.
3439
344011. Added ${time_interval:xxxxx}.
3441
344212. A bug was causing one of the ddress fields not to be passed back correctly
3443 from remote delivery subprocesses. The field in question was not being
3444 subsequently used, so this caused to problems in practice.
3445
344613. Added new log selectors queue_time and deliver_time.
3447
344814. Might have fixed a bug in maildirsizefile handling that threw up
3449 "unexpected character" debug warnings, and recalculated the data
3450 unnecessarily. In any case, I expanded the warning message to give more
3451 information.
3452
345315. Added the message "Restricted characters in address" to the statements in
3454 the default ACL that block characters like @ and % in local parts.
3455
345616. Change 71 for release 4.31 proved to be much less benign that I imagined.
3457 Three changes have been made:
3458
3459 (a) There was a serious bug; a negative response to MAIL caused the whole
3460 recipient domain to be cached as invalid, thereby blocking all messages
3461 to all local parts at the same domain, from all senders. This bug has
3462 been fixed. The domain is no longer cached after a negative response to
3463 MAIL if the sender used is not empty.
3464
3465 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3466 been restored.
3467
3468 (c) A new callout option, "use_sender" has been added for people who want
3469 the modified behaviour.
3470
3471
3472Exim version 4.31
3473-----------------
3474
3475 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3476 Larry Rosenman.
3477
3478 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3479 indeed breaks things for older releases.
3480
3481 3. Added additional logging to the case where there is a problem reading data
3482 from a filter that is running in a subprocess using a pipe, in order to
3483 try to track down a specific problem.
3484
3485 4. Testing facility fudge: when running in the test harness and attempting
3486 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3487 getting "No route to host". Convert this to a timeout.
3488
3489 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3490 warning.
3491
3492 6. Some OS don't have socklen_t but use size_t instead. This affects the
3493 fifth argument of getsockopt() amongst other things. This is now
3494 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3495 can be set for individual OS. I have set it for SunOS5, OSF1, and
3496 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3497 some earlier ones do not.
3498
3499 7. Change 4.30/15 was not doing the test caselessly.
3500
3501 8. The standard form for an IPv6 address literal was being rejected by address
3502 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3503 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3504 this, as well as the form without the "IPv6" on the front (but only when
3505 address literals are enabled, of course).
3506
3507 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3508
350910. Exim crashed if a message with an empty sender address specified by -f
3510 encountered a router with an errors_to setting. This could be provoked only
3511 by a command such as
3512
3513 exim -f "" ...
3514
3515 where an empty string was supplied; "<>" did not hit this bug.
3516
351711. Installed PCRE release 4.5.
3518
351912. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3520 remained set. It is now erased.
3521
352213. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3523 times from message ids (which are base 36 rather than the normal 62).
3524
352514. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3526 were being counted as actual protocol errors, and logged if the log
3527 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3528 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3529 and DATA following a set of rejected RCPTs do not count as protocol errors.
3530 In other words, Exim assumes they were pipelined, though this may not
3531 actually be the case. Of course, in all cases the client gets an
3532 appropriate error code.
3533
353415. If a lookup fails in an ACL condition, a message about the failure may
3535 be available; it is used if testing the ACL cannot continue, because most
3536 such messages specify what the cause of the deferral is. However, some
3537 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3538 that caused an old message to be retained and used if a later statement
3539 caused a defer, replacing the real cause of the deferral.
3540
354116. If an IP address had so many PTR records that the DNS lookup buffer
3542 was not large enough to hold them, Exim could crash while trying to process
3543 the truncated data. It now detects and logs this case.
3544
354517. Further to 4.21/58, another change has been made: if (and only if) the
3546 first line of a message (the first header line) ends with CRLF, a bare LF
3547 in a subsequent header line has a space inserted after it, so as not to
3548 terminate the header.
3549
355018. Refactoring: tidied an ugly bit of code in appendfile that copied data
3551 unnecessarily, used atoi() instead of strtol(), and didn't check the
3552 termination when getting file sizes from file names by regex.
3553
355