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f13cddcb 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.532 2007/09/21 08:30:38 steve Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
81ea09ca
NM
6NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
7 as mailq or other aliases. Changed the --help handling significantly
8 to do whats expected. exim_usage() emits usage/help information.
9
f13cddcb
SC
10SC/01 Added the -bylocaldomain option to eximstats.
11
eb4c0de6
PH
12Exim version 4.68
13-----------------
14
15PH/01 Another patch from the Sieve maintainer.
16
6a3bceb1
PH
17PH/02 When an IPv6 address is converted to a string for single-key lookup
18 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
19 dots are used instead of colons so that keys in lsearch files need not
20 contain colons. This was done some time before quoting was made available
21 in lsearch files. However, iplsearch files do require colons in IPv6 keys
22 (notated using the quote facility) so as to distinguish them from IPv4
23 keys. This meant that lookups for IP addresses in host lists did not work
24 for iplsearch lookups.
25
26 This has been fixed by arranging for IPv6 addresses to be expressed with
27 colons if the lookup type is iplsearch. This is not incompatible, because
28 previously such lookups could never work.
29
30 The situation is now rather anomolous, since one *can* have colons in
31 ordinary lsearch keys. However, making the change in all cases is
32 incompatible and would probably break a number of configurations.
33
2e30fa9d
TK
34TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
35 version.
36
0806a9c5
MH
37MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
38 conversion specification without a maximum field width, thereby enabling
39 a rogue spamd server to cause a buffer overflow. While nobody in their
40 right mind would setup Exim to query an untrusted spamd server, an
41 attacker that gains access to a server running spamd could potentially
42 exploit this vulnerability to run arbitrary code as the Exim user.
43
ae276964
TK
44TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
45 $primary_hostname instead of what libspf2 thinks the hosts name is.
46
0f2cbd1b
MH
47MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
48 a directory entry by the name of the lookup key. Previously, if a
49 symlink pointed to a non-existing file or a file in a directory that
50 Exim lacked permissions to read, a lookup for a key matching that
51 symlink would fail. Now it is enough that a matching directory entry
52 exists, symlink or not. (Bugzilla 503.)
53
2b85bce7
PH
54PH/03 The body_linecount and body_zerocount variables are now exported in the
55 local_scan API.
56
93655c46
PH
57PH/04 Added the $dnslist_matched variable.
58
6c512171
PH
59PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
60 This means they are set thereafter only if the connection becomes
61 encrypted.
62
63PH/06 Added the client_condition to authenticators so that some can be skipped
64 by clients under certain conditions.
65
aa6dc513
PH
66PH/07 The error message for a badly-placed control=no_multiline_responses left
67 "_responses" off the end of the name.
68
a96603a0
PH
69PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
70
8f240103
PH
71PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
72 (without spaces) instead of just copying the configuration text.
73
74PH/10 Added the /noupdate option to the ratelimit ACL condition.
75
d677b2f2
PH
76PH/11 Added $max_received_linelength.
77
d52120f2
PH
78PH/12 Added +ignore_defer and +include_defer to host lists.
79
64f2600a
PH
80PH/13 Installed PCRE version 7.2. This needed some changes because of the new
81 way in which PCRE > 7.0 is built.
82
8669f003
PH
83PH/14 Implemented queue_only_load_latch.
84
a4dc33a8
PH
85PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
86 MAIL command. The effect was to mangle the value on 64-bit systems.
87
d6a60c0f
PH
88PH/16 Another patch from the Sieve maintainer.
89
8f128379
PH
90PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
91
8932dffe
PH
92PH/18 If a system quota error occurred while trying to create the file for
93 a maildir delivery, the message "Mailbox is full" was not appended to the
94 bounce if the delivery eventually timed out. Change 4.67/27 below applied
95 only to a quota excession during the actual writing of the file.
d6a60c0f 96
ddea74fa 97PH/19 It seems that peer DN values may contain newlines (and other non-printing
48ed62d9
PH
98 characters?) which causes problems in log lines. The DN values are now
99 passed through string_printing() before being added to log lines.
100
ddea74fa 101PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
b7670459
PH
102 and InterBase are left for another time.)
103
ddea74fa
PH
104PH/21 Added message_body_newlines option.
105
ce9f225c
PH
106PH/22 Guard against possible overflow in moan_check_errorcopy().
107
19897d52
PH
108PH/23 POSIX allows open() to be a macro; guard against that.
109
bc64a74d
PH
110PH/24 If the recipient of an error message contained an @ in the local part
111 (suitably quoted, of course), incorrect values were put in $domain and
112 $local_part during the evaluation of errors_copy.
113
eb4c0de6 114
b4ed4da0
PH
115Exim version 4.67
116-----------------
117
22ad45c9
MH
118MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
119 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
120 Jan Srzednicki.
121
b4ed4da0
PH
122PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
123 issue a MAIL command.
124
431b7361
PH
125PH/02 In an ACL statement such as
126
127 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
128
129 if a client was not listed at all, or was listed with a value other than
130 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
131 the condition was not true (as it should be), so access was not denied.
132 The bug was that the ! inversion was incorrectly passed on to the second
133 item. This has been fixed.
134
135PH/03 Added additional dnslists conditions == and =& which are different from
136 = and & when the dns lookup returns more than one IP address.
137
83da1223
PH
138PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
139 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
140
54fc8428
PH
141PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
142 FSYNC, which compiles an option called disable_fsync that allows for
143 bypassing fsync(). The documentation is heavily laced with warnings.
144
34c5e8dd
SC
145SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
146
bbe15da8
PH
147PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
148 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
149 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
150 including adding "make clean"; (3) Added -fPIC when compiling the test
151 dynamically loaded module, to get rid of a warning.
152
0e8a9471
MH
153MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
154 message fails, move_frozen_messages = true and ignore_bounce_errors_after
155 = 0s. The bug is otherwise harmless.
156
f0872424
PH
157PH/07 There was a bug in the dovecot authenticator such that the value of
158 $auth1 could be overwritten, and so not correctly preserved, after a
159 successful authentication. This usually meant that the value preserved by
160 the server_setid option was incorrect.
161
b01dd148
PH
162PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
163
6bf342e1
PH
164PH/09 Installed PCRE release 7.0.
165
273f34d0
PH
166PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
167 run for batched SMTP input. It is now run at the start of every message
168 in the batch. While fixing this I discovered that the process information
169 (output by running exiwhat) was not always getting set for -bs and -bS
170 input. This is fixed, and it now also says "batched" for BSMTP.
171
cf8b11a5
PH
172PH/11 Added control=no_pipelining.
173
41c7c167
PH
174PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
175 patch, slightly modified), and move the expansion of helo_data till after
176 the connection is made in the smtp transport (so it can use these
177 values).
178
9c57cbc0
PH
179PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
180
f3f065bb
PH
181PH/14 Added log_selector = +pid.
182
047bdd8c
PH
183PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
184
0ce9abe6
PH
185PH/16 Add ${if forany and ${if forall.
186
0e22dfd1
PH
187PH/17 Added dsn_from option to vary the From: line in DSNs.
188
4c590bd1
PH
189PH/18 Flush SMTP output before performing a callout, unless control =
190 no_callout_flush is set.
191
09945f1e
PH
192PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
193 was true (the default) a successful delivery failed to delete the retry
194 item, thus causing premature timeout of the address. The bug is now
195 fixed.
196
c51b8e75
PH
197PH/20 Added hosts_avoid_pipelining to the smtp transport.
198
e28326d8
PH
199PH/21 Long custom messages for fakedefer and fakereject are now split up
200 into multiline reponses in the same way that messages for "deny" and
201 other ACL rejections are.
202
75b1493f
PH
203PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
204 with slight modification.
205
7c5214ec
PH
206PH/23 Applied sieve patches from the maintainer "tracking the latest notify
207 draft, changing the syntax and factoring some duplicate code".
208
4311097e
PH
209PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
210 for deliveries of the second and subsequent messages over the same SMTP
211 connection.
212
29f89cad
PH
213PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
214 ${reduce, with only minor "tidies".
215
5e687460
SC
216SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
217
c3611384
PH
218PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
219 expansion side effects.
220
5a11a7b4
PH
221PH/27 When a message times out after an over-quota error from an Exim-imposed
222 quota, the bounce message says "mailbox is full". This message was not
223 being given when it was a system quota that was exceeded. It now should
224 be the same.
225
0e20aff9
MH
226MH/03 Made $recipients available in local_scan(). local_scan() already has
227 better access to the recipient list through recipients_list[], but
228 $recipients can be useful in postmaster-provided expansion strings.
229
ca86f471
PH
230PH/28 The $smtp_command and $smtp_command_argument variables were not correct
231 in the case of a MAIL command with additional options following the
232 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
233 were accidentally chopped off.
234
a14e5636
PH
235PH/29 SMTP synchronization checks are implemented when a command is read -
236 there is a check that no more input is waiting when there shouldn't be
237 any. However, for some commands, a delay in an ACL can mean that it is
238 some time before the response is written. In this time, more input might
239 arrive, invalidly. So now there are extra checks after an ACL has run for
240 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
241 pipelining has not been advertised.
242
ec95d1a6
PH
243PH/30 MH's patch to allow iscntrl() characters to be list separators.
244
42855d71
PH
245PH/31 Unlike :fail:, a custom message specified with :defer: was not being
246 returned in the SMTP response when smtp_return_error_details was false.
247 This has been fixed.
248
57c2c631
PH
249PH/32 Change the Dovecot authenticator to use read() and write() on the socket
250 instead of the C I/O that was originally supplied, because problems were
251 reported on Solaris.
252
58c01c94
PH
253PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
254 Exim which did not show up earlier: it was assuming that a call to
255 SSL_CTX_set_info_callback() might give an error value. In fact, there is
256 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
257 was a macro that became an assignment, so it seemed to work. This has
258 changed to a proper function call with a void return, hence the compile
259 error. Exim's code has been fixed.
260
dee5a20a
PH
261PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
262 cpus.
263
d2ee6114
PH
264PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
265
b2d5182b
PH
266PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
267
79749a79
PH
268PH/37 If a message is not accepted after it has had an id assigned (e.g.
269 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
270 "Completed" line in the log. When some messages of this type were
271 selected by exigrep, they were listed as "not completed". Others were
272 picked up by some special patterns. I have improved the selection
273 criteria to be more general.
79749a79 274
c456d9bb
PH
275PH/38 The host_find_failed option in the manualroute router can now be set
276 to "ignore", to completely ignore a host whose IP address cannot be
277 found. If all hosts are ignored, the behaviour is controlled by the new
278 host_all_ignored option.
279
cd9868ec
PH
280PH/39 In a list of hosts for manualroute, if one item (either because of multi-
281 homing or because of multiple MX records with /mx) generated more than
282 one IP address, and the following item turned out to be the local host,
283 all the secondary addresses of the first item were incorrectly removed
284 from the list, along with the local host and any following hosts (which
285 is what is supposed to happen).
286
ebeaf996
PH
287PH/40 When Exim receives a message, it writes the login name, uid, and gid of
288 whoever called Exim into the -H file. In the case of the daemon it was
289 behaving confusingly. When first started, it used values for whoever
290 started the daemon, but after a SIGHUP it used the Exim user (because it
291 calls itself on a restart). I have changed the code so that it now always
292 uses the Exim user.
293
2679d413
PH
294PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
295 message are rejected with the same error (e.g. no authentication or bad
296 sender address), and a DATA command is nevertheless sent (as can happen
297 with PIPELINING or a stupid MUA), the error message that was given to the
298 RCPT commands is included in the rejection of the DATA command. This is
299 intended to be helpful for MUAs that show only the final error to their
300 users.
301
84024b72
PH
302PH/42 Another patch from the Sieve maintainer.
303
8005d38e
SC
304SC/02 Eximstats - Differentiate between permanent and temporary rejects.
305 Eximstats - Fixed some broken HTML links and added missing column headers
306 (Jez Hancock).
307 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
308 columns for Rejects, Temp Rejects, Ham, and Spam rows.
309
3298c6c6
SC
310SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
311
a43a27c5
PH
312PH/43 Yet another patch from the Sieve maintainer.
313
58eb016e 314PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
315 the response to the final '.' that terminates a message, but only in the
316 case where the client has not sent further data following the '.'
317 (unfortunately, this is allowed). However, in many cases there won't be
318 any further data because there won't be any more messages to send. A call
319 to select() can be used: if it shows that the input is "ready", there is
320 either input waiting, or the socket has been closed. An attempt to read
321 the next input character can distinguish the two cases. Previously, Exim
58eb016e 322 would have sent an OK response which the client would never have see.
563b63fa
PH
323 This could lead to message repetition. This fix should cure that, at
324 least in a lot of common cases.
58eb016e 325
b43a74ea
PH
326PH/45 Do not advertise STARTTLS in response to HELP unless it would be
327 advertised in response to EHLO.
328
b4ed4da0 329
5dd1517f
PH
330Exim version 4.66
331-----------------
332
333PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
334 fixed by 4.65/MH/01 (is this a record?) are fixed:
335
336 (i) An empty string was always treated as zero by the numeric comparison
337 operators. This behaviour has been restored.
338
339 (ii) It is documented that the numeric comparison operators always treat
340 their arguments as decimal numbers. This was broken in that numbers
341 starting with 0 were being interpreted as octal.
342
343 While fixing these problems I realized that there was another issue that
344 hadn't been noticed. Values of message_size_limit (both the global option
345 and the transport option) were treated as octal if they started with 0.
346 The documentation was vague. These values are now always treated as
347 decimal, and I will make that clear in the documentation.
348
349
93cfa765
TK
350Exim version 4.65
351-----------------
352
353TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
354 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
355 versions. (#438)
356
d6066548
MH
357MH/01 Don't check that the operands of numeric comparison operators are
358 integers when their expansion is in "skipping" mode (fixes bug
359 introduced by 4.64-PH/07).
360
4362ff0d
PH
361PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
362 child addresses, Exim now panics and dies. Previously, because the count
363 is held in a short int, deliveries were likely to be lost. As such a
364 large number of recipients for a single message is ridiculous
365 (performance will be very, very poor), I have chosen to impose a limit
366 rather than extend the field.
367
93cfa765 368
944e9e9c
TF
369Exim version 4.64
370-----------------
aa41d2de 371
21d74bd9
TK
372TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
373 leftover -K file (the existence of which was triggered by #402).
374 While we were at it, introduced process PID as part of the -K
375 filename. This should rule out race conditions when creating
376 these files.
377
378TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
379 processing considerably. Previous code took too long for large mails,
380 triggering a timeout which in turn triggers #401.
381
382TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
383 in the DK code in transports.c. sendfile() is not really portable,
384 hence the _LINUX specificness.
944e9e9c
TF
385
386TF/01 In the add_headers option to the mail command in an Exim filter,
387 there was a bug that Exim would claim a syntax error in any
388 header after the first one which had an odd number of characters
389 in the field name.
390
2b1c6e3a
PH
391PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
392 callout verification, Exim cached a "reject" for the entire domain. This
393 is correct for most verifications, but it is not correct for a recipient
394 verification with use_sender or use_postmaster set, because in that case
395 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
396 case of MAIL FROM:<> rejection from other early rejections (e.g.
397 rejection of HELO). When verifying a recipient using a non-null MAIL
398 address, the cache is ignored if it shows MAIL FROM:<> rejection.
399 Whatever the result of the callout, the value of the domain cache is
400 left unchanged (for any other kind of callout, getting as far as trying
401 RCPT means that the domain itself is ok).
402
1f872c80
PH
403PH/02 Tidied a number of unused variable and signed/unsigned warnings that
404 gcc 4.1.1 threw up.
405
406PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
407 manifest itself as EPIPE rather than ECONNECT. When tidying away a
408 session, the daemon ignores ECONNECT errors and logs others; it now
409 ignores EPIPE as well.
410
d203e649
PH
411PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
412 (quoted-printable decoding).
413
cc2ed8f7 414PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 415 later the small subsequent patch to fix an introduced bug.
f951fd57 416
ddfcd446
PH
417PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
418
d45b1de8
PH
419PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
420
421PH/08 An error is now given if message_size_limit is specified negative.
422
38a0a95f 423PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 424 to be given (somewhat) arbitrary names.
38a0a95f 425
a2405d83
JJ
426JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
427 in 4.64-PH/09.
428
429JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
430 miscellaneous code fixes
431
6ea85e9a
PH
432PH/10 Added the log_reject_target ACL modifier to specify where to log
433 rejections.
434
26da7e20
PH
435PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
436 hostname. This is wrong, because it relates to the incoming message (and
437 probably the interface on which it is arriving) and not to the outgoing
438 callout (which could be using a different interface). This has been
439 changed to use the value of the helo_data option from the smtp transport
440 instead - this is what is used when a message is actually being sent. If
441 there is no remote transport (possible with a router that sets up host
442 addresses), $smtp_active_hostname is used.
6ea85e9a 443
14aa5a05 444PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 445 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
446 (a) The code assumed that strncpy() returns a negative number on buffer
447 overflow, which isn't the case. Replaced with Exim's string_format()
448 function.
449 (b) There were several signed/unsigned issues. I just did the minimum
450 hacking in of casts. There is scope for a larger refactoring.
451 (c) The code used strcasecmp() which is not a standard C function.
452 Replaced with Exim's strcmpic() function.
453 (d) The code set only $1; it now sets $auth1 as well.
454 (e) A simple test gave the error "authentication client didn't specify
455 service in request". It would seem that Dovecot has changed its
456 interface. Fortunately there's a specification; I followed it and
457 changed what the client sends and it appears to be working now.
458
ff75a1f7
PH
459PH/13 Added $message_headers_raw to provide the headers without RFC 2047
460 decoding.
461
e6f6568e
PH
462PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
463 address A is aliased to B and C, where B exists and C does not. Without
464 -v the output is "A verified" because verification stops after a
465 successful redirection if more than one address is generated. However,
466 with -v the child addresses are also verified. Exim was outputting "A
467 failed to verify" and then showing the successful verification for C,
468 with its parentage. It now outputs "B failed to verify", showing B's
469 parentage before showing the successful verification of C.
470
d6f6e0dc
PH
471PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
472 look up a TXT record in a specific list after matching in a combined
473 list.
474
322050c2
PH
475PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
476 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
477 they consult the DNS. I had assumed they would set it the way they
478 wanted; and indeed my experiments on Linux seem to show that in some
479 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
480 To be on the safe side, however, I have now made the interface to
481 host_find_byname() similar to host_find_bydns(), with an argument
482 containing the DNS resolver options. The host_find_byname() function now
483 sets these options at its start, just as host_find_bydns() does. The smtp
484 transport options dns_qualify_single and dns_search_parents are passed to
485 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
486 of host_find_byname() use the default settings of RES_DEFNAMES
487 (qualify_single) but not RES_DNSRCH (search_parents).
488
08955dd3
PH
489PH/17 Applied (a modified version of) Nico Erfurth's patch to make
490 spool_read_header() do less string testing, by means of a preliminary
491 switch on the second character of optional "-foo" lines. (This is
492 overdue, caused by the large number of possibilities that now exist.
493 Originally there were few.) While I was there, I also converted the
494 str(n)cmp tests so they don't re-test the leading "-" and the first
495 character, in the hope this might squeeze out yet more improvement.
496
1eccaa59
PH
497PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
498 flag allowing group syntax was set by the header_syntax check but not
499 turned off, possible causing trouble later; (2) The flag was not being
500 set at all for the header_verify test, causing "group"-style headers to
501 be rejected. I have now set it in this case, and also caused header_
502 verify to ignore an empty address taken from a group. While doing this, I
503 came across some other cases where the code for allowing group syntax
504 while scanning a header line wasn't quite right (mostly, not resetting
505 the flag correctly in the right place). These bugs could have caused
506 trouble for malformed header lines. I hope it is now all correct.
507
602e59e5
PH
508PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
509 with the "reply" argument non-NULL. The code, however (which originally
510 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
511 but it didn't always do it. This confused somebody who was copying the
512 code for some other use. I have removed all the tests.
513
411ef850
PH
514PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
515 feature that was used to support insecure browsers during the U.S. crypto
516 embargo. It requires special client support, and Exim is probably the
517 only MTA that supported it -- and would never use it because real RSA is
518 always available. This code has been removed, because it had the bad
519 effect of slowing Exim down by computing (never used) parameters for the
520 RSA_EXPORT functionality.
521
7befa435
PH
522PH/21 On the advice of Timo Sirainen, added a check to the dovecot
523 authenticator to fail if there's a tab character in the incoming data
524 (there should never be unless someone is messing about, as it's supposed
525 to be base64-encoded). Also added, on Timo's advice, the "secured" option
526 if the connection is using TLS or if the remote IP is the same as the
527 local IP, and the "valid-client-cert option" if a client certificate has
528 been verified.
529
48da4259 530PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
531 authenticators. This can be used for authorization after authentication
532 succeeds. (In the case of plaintext, it servers for both authentication
533 and authorization.)
534
48da4259
PH
535PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
536 if any retry times were supplied.
537
d1d5595c
PH
538PH/24 Exim crashed if verify=helo was activated during an incoming -bs
539 connection, where there is no client IP address to check. In this
540 situation, the verify now always succeeds.
541
0ef732d9
PH
542PH/25 Applied John Jetmore's -Mset patch.
543
328895cc
PH
544PH/26 Added -bem to be like -Mset, but loading a message from a file.
545
fd700877
PH
546PH/27 In a string expansion for a processed (not raw) header when multiple
547 headers of the same name were present, leading whitespace was being
548 removed from all of them, but trailing whitespace was being removed only
549 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
550 before concatenation. Completely empty headers in a concatenation (as
551 before) are ignored.
fd700877 552
8dce1a6f
PH
553PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
554 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
555
17af4a17
PH
556PH/29 [Removed. This was a change that I later backed out, and forgot to
557 correct the ChangeLog entry (that I had efficiently created) before
558 committing the later change.]
f6c332bd
PH
559
560PH/30 Exim was sometimes attempting to deliver messages that had suffered
561 address errors (4xx response to RCPT) over the same connection as other
562 messages routed to the same hosts. Such deliveries are always "forced",
563 so retry times are not inspected. This resulted in far too many retries
564 for the affected addresses. The effect occurred only when there were more
565 hosts than the hosts_max_try setting in the smtp transport when it had
566 the 4xx errors. Those hosts that it had tried were not added to the list
567 of hosts for which the message was waiting, so if all were tried, there
568 was no problem. Two fixes have been applied:
569
570 (i) If there are any address or message errors in an SMTP delivery, none
571 of the hosts (tried or untried) are now added to the list of hosts
572 for which the message is waiting, so the message should not be a
573 candidate for sending over the same connection that was used for a
574 successful delivery of some other message. This seems entirely
575 reasonable: after all the message is NOT "waiting for some host".
576 This is so "obvious" that I'm not sure why it wasn't done
577 previously. Hope I haven't missed anything, but it can't do any
578 harm, as the worst effect is to miss an optimization.
579
580 (ii) If, despite (i), such a delivery is accidentally attempted, the
581 routing retry time is respected, so at least it doesn't keep
582 hammering the server.
583
c1114884
PH
584PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
585 in ${readsocket because some servers need this prod.
586
7a0743eb
PH
587PH/32 Added some extra debug output when updating a wait-xxx database.
588
0d85fa3f
PH
589PH/33 The hint "could be header name not terminated by colon", which has been
590 given for certain expansion errors for a long time, was not being given
591 for the ${if def:h_colon_omitted{... case.
592
1bf43b78
PH
593PH/34 The spec says: "With one important exception, whenever a domain list is
594 being scanned, $domain contains the subject domain." There was at least
595 one case where this was not true.
596
520de300
PH
597PH/35 The error "getsockname() failed: connection reset by peer" was being
598 written to the panic log as well as the main log, but it isn't really
599 panic-worthy as it just means the connection died rather early on. I have
600 removed the panic log writing for the ECONNRESET error when getsockname()
601 fails.
602
48c7f9e2
PH
603PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
604 runs only) independently of the message's sender address. This meant
605 that, if the 4xx error was in fact related to the sender, a different
606 message to the same recipient with a different sender could confuse
607 things. In particualar, this can happen when sending to a greylisting
608 server, but other circumstances could also provoke similar problems.
609 I have changed the default so that the retry time for these errors is now
610 based a combination of the sender and recipient addresses. This change
611 can be overridden by setting address_retry_include_sender=false in the
612 smtp transport.
613
99ea1c86
PH
614PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
615 remote server are returned as part of bounce messages. This was not
616 happening for LMTP over a pipe (the lmtp transport), but now it is the
617 same for both kinds of LMTP.
618
a2042e78
PH
619PH/38 Despite being documented as not happening, Exim was rewriting addresses
620 in header lines that were in fact CNAMEs. This is no longer the case.
621
4fbcfc2e
PH
622PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
623 and queue runs started by the daemon processed all messages. This has
624 been fixed so that -R and -S can now usefully be given with -q<time>.
625
aa41d2de
PH
626PH/40 Import PCRE release 6.7 (fixes some bugs).
627
af561417
PH
628PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
629
3cc66b45
PH
630PH/42 Give an error if -q is specified more than once.
631
194cc0e4
PH
632PH/43 Renamed the variables $interface_address and $interface_port as
633 $received_ip_address and $received_port, to make it clear that these
634 values apply to message reception, and not to the outgoing interface when
635 a message is delivered. (The old names remain recognized, of course.)
636
a401ddaa
PH
637PH/44 There was no timeout on the connect() call when using a Unix domain
638 socket in the ${readsocket expansion. There now is.
639
4e88a19f
PH
640PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
641 be meaningful with "accept".
642
d7d7b289
SC
643SC/01 Eximstats V1.43
644 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
645
646SC/02 Eximstats V1.44
647 Use a glob alias rather than an array ref in the generated
648 parser. This improves both readability and performance.
649
650SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
651 Collect SpamAssassin and rejection statistics.
652 Don't display local sender or destination tables unless
653 there is data to show.
654 Added average volumes into the top table text output.
655
656SC/04 Eximstats V1.46
657 Collect data on the number of addresses (recipients)
658 as well as the number of messages.
659
660SC/05 Eximstats V1.47
661 Added 'Message too big' to the list of mail rejection
662 reasons (thanks to Marco Gaiarin).
663
664SC/06 Eximstats V1.48
665 Mainlog lines which have GMT offsets and are too short to
666 have a flag are now skipped.
667
668SC/07 Eximstats V1.49 (Alain Williams)
669 Added the -emptyok flag.
670
671SC/08 Eximstats V1.50
672 Fixes for obtaining the IP address from reject messages.
673
0ea2a468
JJ
674JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
675 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
676 whitesspace changes from 4.64-PH/27
677
678JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
679 match 4.64-PH/13
680
681JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
682 are found, allow negative numbers in numeric criteria)
683
684JJ/06 exipick.20061117.2, added new $message_body_missing variable
685
686JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
687 to match changes made in 4.64-PH/43
688
8a10f5a4
PH
689PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
690
30e18802
PH
691PH/47 Put in an explicit test for a DNS lookup of an address record where the
692 "domain" is actually an IP address, and force a failure. This locks out
693 those revolvers/nameservers that support "A-for-A" lookups, in
694 contravention of the specifications.
695
55728a4f
PH
696PH/48 When a host name was looked up from an IP address, and the subsequent
697 forward lookup of the name timed out, the host name was left in
698 $sender_host_name, contrary to the specification.
d7d7b289 699
d7837193
PH
700PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
701 restricted to single-key lookups, Exim was not diagnosing an error if
702 * or *@ was used with a query-style lookup.
703
87054a31
PH
704PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
705
ea2c01d2
MH
706MH/01 local_scan ABI version incremented to 1.1. It should have been updated
707 long ago, but noone interested enough thought of it. Let's just say that
708 the "1.1" means that there are some new functions that weren't there at
709 some point in the past.
710
e4fa6968
PH
711PH/51 Error processing for expansion failure of helo_data from an smtp
712 transport during callout processing was broken.
713
56f5d9bd
PH
714PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
715 tested/used via the -bh/-bhc/-bs options.
716
922e1c28
PH
717PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
718 bug, fixed in subsequent PCRE releases).
719
21eb6e72
PH
720PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
721 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
722
a0540757
PH
723PH/55 Check for a ridiculously long file name in exim_dbmbuild.
724
944e9e9c 725
478be7b0
SC
726Exim version 4.63
727-----------------
728
729SC/01 Use a glob alias rather than an array ref in eximstats generated
730 parser. This improves both readability and performance.
731
732SC/02 Collect SpamAssassin and rejection statistics in eximstats.
733 Don't display local sender or destination tables in eximstats unless
734 there is data to show.
735 Added average volumes into the eximstats top table text output.
736
737SC/03 Collect data on the number of addresses (recipients) as well
738 as the number of messages in eximstats.
739
2b965a65
TF
740TF/01 Correct an error in the documentation for the redirect router. Exim
741 does (usually) call initgroups() when daemonizing.
478be7b0 742
45b91596
PH
743TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
744 with consistent privilege compared to when running as a daemon.
478be7b0 745
c59f5781
TF
746TF/03 Note in the spec that $authenticated_id is not set for local
747 submissions from trusted users.
748
90fc3069
TF
749TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
750 Thanks to Dean Brooks <dean@iglou.com> for the patch.
751
6083aca0
TF
752TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
753 by adding some example configuration directives to the default
754 configuration file. A little bit of work is required to uncomment the
755 directives and define how usernames and passwords are checked, but
756 there is now a framework to start from.
757
765b530f
PH
758PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
759 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
760 without this. I don't know how relevant this is to other LDAP libraries.
761
4e167a8c
PH
762PH/02 Add the verb name to the "unknown ACL verb" error.
763
4608d683
PH
764PH/03 Magnus Holmgren's patch for filter_prepend_home.
765
b8dc3e4a
PH
766PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
767
5418e93b
PH
768PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
769 directory not expanded when it should be if an expanded home directory
770 was set for the address (which is overridden by the transport).
771
b4a9bda2
PH
772PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
773 libradius.
774
45b91596
PH
775PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
776 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
777 because it is too late at that time, and has no effect.
778
5547e2c5
PH
779PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
780 security issue with \' (bugzilla #107). I could not use the
781 PQescapeStringConn() function, because it needs a PGconn value as one of
782 its arguments.
783
dbcef0ea
PH
784PH/08 When testing addresses using -bt, indicate those final addresses that
785 are duplicates that would not cause an additional delivery. At least one
786 person was confused, thinking that -bt output corresponded to deliveries.
787 (Suppressing duplicates isn't a good idea as you lose the information
788 about possibly different redirections that led to the duplicates.)
789
25257489
PH
790PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
791 systems where poll() doesn't work, in particular OS X.
792
c816d124
PH
793PH/10 Added more information to debugging output for retry time not reached.
794
a9ccd69a
PH
795PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
796 operations in malware.c.
797
75fa1910
PH
798PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
799 signatures.
800
a7d7aa58
PH
801PH/13 If write_rejectlog was set false when logging was sent to syslog with
802 syslog_duplication set false, log lines that would normally be written
803 both the the main log and to the reject log were not written to syslog at
804 all.
805
42119b09
PH
806PH/14 In the default configuration, change the use of "message" in ACL warn
807 statements to "add_header".
808
41609df5
PH
809PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
810 not followed by a command (e.g. "seen endif").
811
a5bd321b
PH
812PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
813 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
814 latter.
815
e85a7ad5 816PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
817 so that it is now:
818
e85a7ad5
PH
819 ${if or { \
820 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
821 { match{$h_precedence:}{(?i)bulk|list|junk} } \
822 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
823 }{no}{yes}}
824
e85a7ad5
PH
825 The Auto-Submitted: and various List- headers are standardised, whereas I
826 don't think Precedence: ever was.
5dff5817 827
d8fe1c03
PH
828PH/18 Refactored debugging code in route_finduser() to show more information,
829 in particular, the error code if getpwnam() issues one.
830
16282d2b
PH
831PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
832 This is apparently needed in addition to the PH/07 change above to avoid
833 any possible encoding problems.
834
35d40a98
PH
835PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
836 but not after initializing Perl.
837
034d99ab
PH
838PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
839 output them only if debugging. By default they are written stderr,
840 apparently, which is not desirable.
841
6ec97b1b
PH
842PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
843 queries.
844
e22ca4ac
JJ
845JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
846 --not options
847
848JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
849
33d73e3b
PH
850PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
851 authenticated or an ident call has been made. Suppress the default
852 values for $authenticated_id and $authenticated_sender (but permit -oMai
853 and -oMas) when testing with -bh.
854
9ecb03f3
PH
855PH/24 Re-jigged the order of the tests in the default configuration so that the
856 tests for valid domains and recipients precede the DNS black list and CSA
857 tests, on the grounds that those ones are more expensive.
858
084efe8d
PH
859PH/25 Exim was not testing for a space following SMTP commands such as EHLO
860 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
861 This bug exists in every version of Exim that I still have, right back to
862 0.12.
863
366fc9f0
PH
864PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
865 However, an attempt to turn on case-sensitivity in a regex key by
866 including (?-i) didn't work because the subject string was already
867 lowercased, and the effects were non-intuitive. It turns out that a
868 one-line patch can be used to allow (?-i) to work as expected.
869
c59f5781 870
c887c79e
TF
871Exim version 4.62
872-----------------
873
874TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
875 other effects) broke the use of negated acl sub-conditions.
876
1cce3af8
PH
877PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
878 patch).
879
afb3eaaf
PH
880PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
881 "Deny" causes Exim to reject the incoming connection with a 554 error.
882 Unfortunately, if there is a major crisis, such as a disk failure,
883 tcp-wrappers gives "deny", whereas what one would like would be some
884 kind of temporary error. A kludge has been added to help with this.
885 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
886 554 error is used if errno is still zero or contains ENOENT (which occurs
887 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
888 451 error is used.
889
e173618b
PH
890PH/03 Add -lutil to the default FreeBSD LIBS setting.
891
dd16e114
PH
892PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
893 errors. Otherwise a message that provokes a temporary error (when other
894 messages do not) can cause a whole host to time out.
895
f7fd3850
PH
896PH/05 Batch deliveries by appendfile and pipe transports did not work when the
897 addresses were routed directly to files or pipes from a redirect router.
898 File deliveries just didn't batch; pipe deliveries might have suffered
899 odd errors.
900
d87df92c
PH
901PH/06 A failure to get a lock for a hints database would erroneously always say
902 "Failed to get write lock", even when it was really a read lock.
903
7e9f683d
PH
904PH/07 The appendfile transport was creating MBX lock files with a fixed mode
905 of 0600. This has been changed to use the value of the lockfile_mode
906 option (which defaults to 0600).
907
bfad5236
PH
908PH/08 Applied small patch from the Sieve maintainer.
909
01c490df
PH
910PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
911 folder from quota calculations, a direct delivery into this folder messed
912 up the contents of the maildirsize file. This was because the regex was
913 used only to exclude .Trash (or whatever) when the size of the mailbox
914 was calculated. There was no check that a delivery was happening into an
915 excluded directory. This bug has been fixed by ignoring all quota
916 processing for deliveries into excluded directories.
917
d6629cdc
PH
918PH/10 Added the maildirfolder_create_regex option to appendfile.
919
1cce3af8 920
214e2000
PH
921Exim version 4.61
922-----------------
923
924PH/01 The code for finding all the local interface addresses on a FreeBSD
925 system running IPv6 was broken. This may well have applied to all BSD
926 systems, as well as to others that have similar system calls. The broken
927 code found IPv4 interfaces correctly, but gave incorrect values for the
928 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
929 that it would not match correctly against @[] and not recognize the IPv6
930 addresses as local.
931
f9daeae0
PH
932PH/02 The ipliteral router was not recognizing addresses of the form user@
933 [ipv6:....] because it didn't know about the "ipv6:" prefix.
934
7e66e54d
PH
935PH/03 Added disable_ipv6.
936
c8ea1597
PH
937PH/04 Changed $reply_address to use the raw form of the headers instead of the
938 decoded form, because it is most often used to construct To: headers
939 lines in autoreplies, and the decoded form may well be syntactically
940 invalid. However, $reply_address has leading white space removed, and all
941 newlines turned into spaces so that the autoreply transport does not
942 grumble.
943
911f6fde
PH
944PH/05 If group was specified without a user on a router, and no group or user
945 was specified on a transport, the group from the router was ignored.
946
47ca6d6c
PH
947PH/06 Increased the number of ACL variables to 20 of each type, and arranged
948 for visible compile-time settings that can be used to change these
949 numbers, for those that want even more. Backwards compatibility with old
950 spool files has been maintained. However, going back to a previous Exim
951 release will lost any variables that are in spool files.
952
ed0e9820
PH
953PH/07 Two small changes when running in the test harness: increase delay when
954 passing a TCP/IP connection to a new process, in case the original
955 process has to generate a bounce, and remove special handling of
956 127.0.0.2 (sic), which is no longer necessary.
957
eff37e47
PH
958PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
959 be the same on different OS.
960
1921d2ea
PH
961PH/09 Moved a debug statement in filter processing to avoid a race problem when
962 testing.
963
b3f69ca8
JJ
964JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
965 whether --show-vars was specified or not
966
967JJ/02 exipick: Added support for new ACL variable spool format introduced
968 in 4.61-PH/06
969
424a1c63
PH
970PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
971 syntactically invalid From: or Reply-to: line, and a filter used this to
972 generate an autoreply, and therefore failed to obtain an address for the
973 autoreply, Exim could try to deliver to a non-existent relative file
974 name, causing unrelated and misleading errors. What now happens is that
975 it logs this as a hard delivery error, but does not attempt to create a
976 bounce message.
977
7a100415
PH
978PH/11 The exinext utility has a -C option for testing purposes, but although
979 the given file was scanned by exinext itself; it wasn't being passed on
980 when Exim was called.
981
19b9dc85
PH
982PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
983 an end-of-file indication when reading a command response.
984
309bd837
PH
985PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
986 compiled. In many other places in Exim, IPv6 addresses are always
987 recognized, so I have changed this. It also means that IPv4 domain
988 literals of the form [IPV4:n.n.n.n] are now always recognized.
989
59e82a2a
PH
990PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
991 used if the router is not running as root, for example, when verifying at
992 ACL time, or when using -bh. The debugging output from this situation was
993 non-existent - all you got was a failure to exec. I have made two
994 changes:
995
996 (a) Failures to set uid/gid, the current directory, or a process leader
997 in a subprocess such as that created by queryprogram now generate
998 suitable debugging ouput when -d is set.
999
1000 (b) The queryprogram router detects when it is not running as root,
1001 outputs suitable debugging information if -d is set, and then runs
1002 the subprocess without attempting to change uid/gid.
1003
9edc04ce
PH
1004PH/15 Minor change to Makefile for building test_host (undocumented testing
1005 feature).
1006
1349e1e5
PH
1007PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
1008 additional section of a DNS packet that returns MX or SRV records.
1009 Instead, it always explicitly searches for A/AAAA records. This avoids
1010 major problems that occur when a DNS server includes only records of one
1011 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
1012 fixed another bug: if SRV records were looked up and the corresponding
1013 address records were *not* found in the additional section, the port
1014 values from the SRV records were lost.
1015
ea49d0e1
PH
1016PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1017 using the correct key (the original address) when searching the retry
1018 rules in order to find which one to use for generating the retry hint.
1019
064a94c9
PH
1020PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1021 adding the default one. Similarly, if it contains a Reply-To: header, the
1022 errors_reply_to option, if set, is not used.
1023
727071f8
PH
1024PH/19 When calculating a retry time, Exim used to measure the "time since
1025 failure" by looking at the "first failed" field in the retry record. Now
1026 it does not use this if it is later than than the arrival time of the
1027 message. Instead it uses the arrival time. This makes for better
1028 behaviour in cases where some deliveries succeed, thus re-setting the
1029 "first failed" field. An example is a quota failure for a huge message
1030 when small messages continue to be delivered. Without this change, the
1031 "time since failure" will always be short, possible causing more frequent
1032 delivery attempts for the huge message than are intended.
dd16e114 1033 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1034
f78eb7c6
PH
1035PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1036 $1, $2, $3) because the numerical variables can be reset during some
1037 expansion items (e.g. "match"), thereby losing the authentication data.
1038
21c28500
PH
1039PH/21 Make -bV show the size of off_t variables so that the test suite can
1040 decide whether to run tests for quotas > 2G.
1041
1042PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1043 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1044 filecount value is greater than 2G or if a quota value is greater than 2G
1045 on a system where the size of off_t is not greater than 4, a panic error
1046 is given.
1047
1688f43b
PH
1048PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1049 never match. The debug and -bh output now contains an explicit error
1050 message indicating a malformed IPv4 address or mask.
1051
1052PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1053 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1054 PH/23 above applies.
1055
9675b384
PH
1056PH/25 Do not write to syslog when running in the test harness. The only
1057 occasion when this arises is a failure to open the main or panic logs
1058 (for which there is an explicit test).
1059
6a3f1455
PH
1060PH/26 Added the /no_tell option to "control=freeze".
1061
dac79d3e
PH
1062PH/27 If a host name lookup failed very early in a connection, for example, if
1063 the IP address matched host_lookup and the reverse lookup yielded a name
1064 that did not have a forward lookup, an error message of the form "no IP
1065 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1066 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1067
5977a0b3
PH
1068PH/28 An enabling patch from MH: add new function child_open_exim2() which
1069 allows the sender and the authenticated sender to be set when
1070 submitting a message from within Exim. Since child_open_exim() is
1071 documented for local_scan(), the new function should be too.
1072
c91535f3
PH
1073PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1074 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1075 results in an empty string is now treated as unset.
1076
0d46a8c8
PH
1077PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1078
278c6e6c
PH
1079PH/31 Added sender_verify_fail logging option.
1080
2cbb4081
PH
1081PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1082 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1083 tidied the source and removed it altogether.
1084
3eef829e
PH
1085PH/33 When a queue run was abandoned because the load average was too high, a
1086 log line was always written; now it is written only if the queue_run log
1087 selector is set. In addition, the log line for abandonment now contains
1088 information about the queue run such as the pid. This is always present
1089 in "start" and "stop" lines but was omitted from the "abandon" line.
1090
1ab95fa6
PH
1091PH/34 Omit spaces between a header name and the colon in the error message that
1092 is given when verify = headers_syntax fails (if there are lots of them,
1093 the message gets confusing).
1094
230205fc
PH
1095PH/35 Change the default for dns_check_names_pattern to allow slashes within
1096 names, as there are now some PTR records that contain slashes. This check
1097 is only to protect against broken name servers that fall over on strange
1098 characters, so the fact that it applies to all lookups doesn't matter.
1099
75e0e026
PH
1100PH/36 Now that the new test suite is complete, we can remove some of the
1101 special code in Exim that was needed for the old test suite. For example,
1102 sorting DNS records because real resolvers return them in an arbitrary
1103 order. The new test suite's fake resolver always returns records in the
1104 same order.
1105
1106PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1107 bounces) except when queue_only is set, to avoid logging races between
1108 the different processes.
1109
145396a6
PH
1110PH/38 Panic-die if .include specifies a non-absolute path.
1111
3cd34f13
PH
1112PH/39 A tweak to the "H" retry rule from its user.
1113
11121d3d
JJ
1114JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1115 a label. They prevented compilation on older perls.
1116
1117JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1118 a warning to be raised on newish perls.
1119
1120JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1121 on queue. Changes to match documented behaviour of showing count of
1122 messages matching specified criteria.
1123
8def5aaf
PH
1124PH/40 Changed the default ident timeout from 30s to 5s.
1125
929ba01c
PH
1126PH/41 Added support for the use of login_cap features, on those BSD systems
1127 that have them, for controlling the resources used by pipe deliveries.
1128
2632889e
PH
1129PH/42 The content-scanning code uses fopen() to create files in which to put
1130 message data. Previously it was not paying any attention to the mode of
1131 the files. Exim runs with umask(0) because the rest of the code creates
1132 files with open(), and sets the required mode explicitly. Thus, these
1133 files were ending up world-writeable. This was not a big issue, because,
1134 being within the spool directory, they were not world-accessible. I have
1135 created a function called modefopen, which takes an additional mode
1136 argument. It sets umask(777), creates the file, chmods it to the required
1137 mode, then resets the umask. All the relevant calls to fopen() in the
1138 content scanning code have been changed to use this function.
1139
944a9c55
PH
1140PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1141 to 24 hours. This avoids potential overflow problems when processing G
1142 and H retry rules. I suspect nobody ever tinkers with this value.
1143
4a23603b
PH
1144PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1145
4730f942
PH
1146PH/45 When the plaintext authenticator is running as a client, the server's
1147 challenges are checked to ensure they are valid base64 strings. By
1148 default, the authentication attempt is cancelled if an invalid string is
1149 received. Setting client_ignore_invalid_base64 true ignores these errors.
1150 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1151 they are received. Thus, the responses can be made to depend on the
1152 challenges. If an invalid string is ignored, an empty string is placed in
1153 the variable.
1154
30dba1e6
PH
1155PH/46 Messages that are created by the autoreply transport now contains a
1156 References: header, in accordance with RFCs 2822 and 3834.
1157
382afc6b
PH
1158PH/47 Added authenticated_sender_force to the smtp transport.
1159
a86229cf
PH
1160PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1161
50c99ba6
PH
1162PH/49 Installed latest patch from the Sieve maintainer.
1163
d35e429d
PH
1164PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1165 was also set, the appendfile transport was unnecessarily scanning a
1166 directory of message files (e.g. for maildir delivery) to find the count
1167 of files (along with the size), even though it did not need this
1168 information. It now does the scan only if it needs to find either the
1169 size of the count of files.
1170
f90d018c
PH
1171PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1172
75def545
PH
1173PH/52 Two bugs concerned with error handling when the smtp transport is
1174 used in LMTP mode:
1175
1176 (i) Exim was not creating retry information for temporary errors given
1177 for individual recipients after the DATA command when the smtp transport
1178 was used in LMTP mode. This meant that they could be retried too
1179 frequently, and not timed out correctly.
1180
1181 (ii) Exim was setting the flag that allows error details to be returned
1182 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1183 recipients that were returned after the DATA command.
1184
1185PH/53 This is related to PH/52, but is more general: for any failing address,
1186 when detailed error information was permitted to be returned to the
1187 sender, but the error was temporary, then after the final timeout, only
1188 "retry timeout exceeded" was returned. Now it returns the full error as
1189 well as "retry timeout exceeded".
1190
c46782ef
PH
1191PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1192 do this, and (what is worse) MTAs that accept it.
1193
71fafd95
PH
1194PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1195 will now be deprecated.
1196
2c5db4fd
PH
1197PH/56 New os.c-cygwin from the Cygwin maintainer.
1198
9cf6b11a
JJ
1199JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1200 formats (previously only available in exim formats via -bpr, -bpru,
1201 and -bpra. Now also available in native and exiqgrep formats)
1202
1203JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1204 with very large, slow to parse queues
1205
1206JJ/08 exipick: added ! as generic prefix to negate any criteria format
1207
1208JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1209
898d150f
PH
1210PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1211 responses to authentication challenges, though it was showing the
1212 challenges; (ii) I've removed the CR characters from the debug output for
1213 SMTP output lines.
1214
46218253
PH
1215PH/58 Allow for the insertion of a newline as well as a space when a string
1216 is turned into more than one encoded-word during RFC 2047 encoding. The
1217 Sieve code now uses this.
1218
e97957bc
PH
1219PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1220 data_4xx, lost_connection, tls_required.
1221
81e509d7
PH
1222PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1223 message was being sent as an SMTP response.
1224
3d240ff7
PH
1225PH/61 Add -l and -k options to exicyclog.
1226
b37c4101
PH
1227PH/62 When verifying, if an address was redirected to one new address, so that
1228 verification continued, and the new address failed or deferred after
1229 having set something in $address_data, the value of $address_data was not
1230 passed back to the ACL. This was different to the case when no
1231 redirection occurred. The value is now passed back in both cases.
1232
79378e0f
PH
1233PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1234 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1235 use login_cap.h, so on its own it isn't the distinguishing feature. The
1236 new name refers directly to the setclassresources() function.
1237
e49c7bb4
PH
1238PH/65 Added configuration files for NetBSD3.
1239
d114ec46
PH
1240PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1241
f3d7df6c
PH
1242PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1243 is preferred over IPv4.
1244
715ab376
PH
1245PH/68 The bounce_return_message and bounce_return_body options were not being
1246 honoured for bounces generated during the reception of non-SMTP messages.
1247 In particular, this applied to messages rejected by the ACL. This bug has
1248 been fixed. However, if bounce_return_message is true and bounce_return_
1249 body is false, the headers that are returned for a non-SMTP message
1250 include only those that have been read before the error was detected.
1251 (In the case of an ACL rejection, they have all been read.)
1252
6b31b150
PH
1253PH/69 The HTML version of the specification is now built in a directory called
1254 spec_html instead of spec.html, because the latter looks like a path with
1255 a MIME-type, and this confuses some software.
1256
1257PH/70 Catch two compiler warnings in sieve.c.
1258
d515a917
PH
1259PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1260 function verify_get_ident() calls ip_connect() to connect a socket, but
1261 if the "connect()" function timed out, ip_connect() used to close the
1262 socket. However, verify_get_ident() also closes the socket later, and in
1263 between Exim writes to the log, which may get opened at this point. When
1264 the socket was closed in ip_connect(), the log could get the same file
1265 descriptor number as the socket. This naturally causes chaos. The fix is
1266 not to close the socket in ip_connect(); the socket should be closed by
1267 the function that creates it. There was only one place in the code where
1268 this was missing, in the iplookup router, which I don't think anybody now
1269 uses, but I've fixed it anyway.
1270
9b8fadde
PH
1271PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1272 well as to direct DNS lookups. Otherwise the handling of names in host
1273 lists is inconsistent and therefore confusing.
1274
214e2000 1275
5de37277
PH
1276Exim version 4.60
1277-----------------
1278
cc38ddbf
PH
1279PH/01 Two changes to the default runtime configuration:
1280
1281 (1) Move the checks for relay_from_hosts and authenticated clients from
1282 after to before the (commented out) DNS black list checks.
1283
1284 (2) Add control=submission to the relay_from_hosts and authenticated
1285 clients checks, on the grounds that messages accepted by these
1286 statements are most likely to be submissions.
5de37277 1287
72fdd6ae
PH
1288PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1289
1290 (1) Generate an error if the third argument for the ${prvs expansion is
1291 not a single digit.
1292
1293 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1294 string.
1295
1296 (3) Reset the variables that are obtained from the first argument of
1297 ${prvscheck and used in the second argument before leaving the code,
1298 because their memory is reclaimed, so using them afterwards may do
1299 silly things.
1300
1301 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1302 one (it's much easier than Tom thought :-).
1303
1304 (5) Because of (4), we can now allow for the use of $prvscheck_result
1305 inside the third argument.
cb9328de 1306
cb741023
PH
1307PH/03 For some reason, the default setting of PATH when running a command from
1308 a pipe transport was just "/usr/bin". I have changed it to
1309 "/bin:/usr/bin".
1310
f174f16e
PH
1311PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1312 anything to be listed in the output from -bV.
b2f5a032 1313
c25242d7
PH
1314PH/05 When a filter generated an autoreply, the entire To: header line was
1315 quoted in the delivery log line, like this:
1316
1317 => >A.N.Other <ano@some.domain> <original@ddress> ...
1318
1319 This has been changed so that it extracts the operative address. There
1320 may be more than one such address. If so, they are comma-separated, like
1321 this:
1322
1323 => >ano@some.domain,ona@other.domain <original@ddress> ...
1324
82c19f95
PH
1325PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1326 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1327 not being looked up in the rDNS to get a host name, Exim was showing the
1328 IP address twice in Received: lines, even though the IP addresses were
1329 identical. For example:
1330
1331 Received: from [1.2.3.4] (helo=[1.2.3.4])
1332
1333 However, if the real host name was known, it was omitting the HELO data
1334 if it matched the actual IP address. This has been tidied up so that it
1335 doesn't show the same IP address twice.
1336
d7ffbc12
PH
1337PH/07 When both +timestamp and +memory debugging was on, the value given by
1338 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1339 called by the debug printing, thereby overwriting the timestamp buffer.
1340 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1341
9f526266
PH
1342PH/08 When the original message was included in an autoreply transport, it
1343 always said "this is a copy of the message, including all the headers",
1344 even if body_only or headers_only was set. It now gives an appropriate
1345 message.
1346
87fcc8b9
PH
1347PH/09 Applied a patch from the Sieve maintainer which:
1348
1349 o fixes some comments
1350 o adds the (disabled) notify extension core
1351 o adds some debug output for the result of if/elsif tests
1352 o points to the current vacation draft in the documentation
1353 and documents the missing references header update
1354
1355 and most important:
1356
1357 o fixes a bug in processing the envelope test (when testing
1358 multiple envelope elements, the last element determinted the
1359 result)
1360
456682f5
PH
1361PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1362 Electronic Mail") by including:
1363
1364 Auto-submitted: auto-generated
1365
1366 in the messages that it generates (bounce messages and others, such as
1367 warnings). In the case of bounce messages for non-SMTP mesages, there was
1368 also a typo: it was using "Auto_submitted" (underscore instead of
1369 hyphen). Since every message generated by Exim is necessarily in response
1370 to another message, thes have all been changed to:
1371
1372 Auto-Submitted: auto-replied
1373
1374 in accordance with these statements in the RFC:
1375
1376 The auto-replied keyword:
1377
1378 - SHOULD be used on messages sent in direct response to another
1379 message by an automatic process,
1380
1381 - MUST NOT be used on manually-generated messages,
1382
1383 - MAY be used on Delivery Status Notifications (DSNs) and Message
1384 Disposition Notifications (MDNs),
1385
1386 - MUST NOT be used on messages generated by automatic or periodic
1387 processes, except for messages which are automatic responses to
1388 other messages.
1389
3e46c1aa
PH
1390PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1391 to the default Received: header definition.
456682f5 1392
49826d12
PH
1393PH/12 Added log selector acl_warn_skipped (default on).
1394
eba0c039
PH
1395PH/13 After a successful wildlsearch lookup, discard the values of numeric
1396 variables because (a) they are in the wrong storage pool and (b) even if
1397 they were copied, it wouldn't work properly because of the caching.
1398
a0d6ba8a
PH
1399PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1400 checking when decoding. Apparently there are clients that generate
1401 overlong encoded strings. Why am I not surprised?
1402
f0917727
PH
1403PH/15 If the first argument of "${if match_address" was not empty, but did not
1404 contain an "@" character, Exim crashed. Now it writes a panic log message
1405 and treats the condition as false.
1406
096fee00
PH
1407PH/16 In autoreply, treat an empty string for "once" the same as unset.
1408
024bd3c2
PH
1409PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1410 extension "envelope-auth". The code is finished and in agreement with
1411 other implementations, but there is no documentation so far and in fact,
1412 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1413 not changing the active code.
1414
1415 Print executed "if" and "elsif" statements when debugging is used. This
1416 helps a great deal to understand what a filter does.
1417
1418 Document more things not specified clearly in RFC3028. I had all this
1419 sorted out, when out of a sudden new issues came to my mind. Oops."
1420
df199fec
PH
1421PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1422 (Bugzilla #53).
1423
d27f1df3
PH
1424PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1425 canonical form (as documented). However, after a host name lookup from
1426 the IP address, check_host() was doing a simple string comparison with
1427 addresses acquired from the DNS when checking that the found name did
1428 have the original IP as one of its addresses. Since any found IPv6
1429 addresses are likely to be in abbreviated form, the comparison could
1430 fail. Luckily, there already exists a function for doing the comparison
1431 by converting both addresses to binary, so now that is used instead of
1432 the text comparison.
1433
96776534
PH
1434PH/20 There was another similar case to PH/19, when a complete host name was
1435 given in a host list; looking up its IP address could give an abbreviated
1436 form, whereas the current host's name might or might not be abbreviated.
1437 The same fix has been applied.
1438
5de37277 1439
9a799bc0
PH
1440Exim version 4.54
1441-----------------
1442
1443PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1444 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1445 It now does.
1446
99a4b039
PH
1447PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1448 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1449
1450PH/03 Typo: missing ".o" in src/pcre/Makefile.
1451
4b233853
PH
1452PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1453 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1454 Also, for "Auto-Submitted", treat anything other than "no" as
1455 non-personal, in accordance with RFC 3834. (Previously it treated
1456 anything starting "auto-" as non-personal.)
1457
8857ccfd
PH
1458TF/01 The control=submission/name=... option had a problem with syntax
1459 errors if the name included a slash character. The /name= option
1460 now slurps the rest of the string, so it can include any characters
1461 but it must come last in the list of options (after /sender_retain
1462 or /domain=).
1463
433a2980
PH
1464PH/05 Some modifications to the interface to the fake nameserver for the new
1465 testing suite.
1466
3e46c1aa 1467
9a799bc0 1468
e3a311ba
TK
1469Exim version 4.53
1470-----------------
1471
1472TK/01 Added the "success_on_redirect" address verification option. See
1473 NewStuff for rationale and an example.
1474
13b685f9
PH
1475PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1476
395ff96d
PH
1477PH/02 Patch to exigrep to allow it to work on syslog lines.
1478
5b68f6e4
PH
1479PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1480 fread() to skip over the body file's header line, because in Cygwin the
1481 header line is locked and is inaccessible.
1482
1ab52c69
PH
1483PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1484 co-exist for some time) to make it clear that it is the Exim ID that is
1485 referenced, not the Message-ID: header line.
1486
b07e6aa3
PH
1487PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1488 string_format() function, because snprintf() does not exist on all
1489 operating systems.
1490
254e032f
PH
1491PH/06 The use of forbid_filter_existstest now also locks out the use of the
1492 ${stat: expansion item.
1493
3af76a81
PH
1494PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1495 protocol synchronization error", to keep the pedants happy.
1496
2548ba04
PH
1497PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1498 well as for IRIX systems, when gcc is being used. See the host.c source
1499 file for comments.
1500
b6c6011d
PH
1501PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1502
cf39cf57
PH
1503PH/10 Named domain lists were not working if used in a queue_smtp_domains
1504 setting.
1505
f1513293
PH
1506PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1507 transport and to the smtp transport in LMTP mode.
1508
727549a4
PH
1509TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1510
af46795e
PH
1511PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1512 run a filter in a subprocess. This could lead to confusion in subsequent
1513 lookups in the parent process. There should also be a search_tidyup() at
1514 the end of the subprocess.
1515
d7b47fd0
PH
1516PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1517 only if the host matched helo_try_verify_hosts, which caused the
1518 verification to occur when the EHLO/HELO command was issued. The ACL just
1519 tested the remembered result. Now, if a previous verification attempt has
1520 not happened, "verify = helo" does it there and then.
1521
ee744174
JJ
1522JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1523
b582ab87
PH
1524TK/03 Fix log output including CR from clamd.
1525
41a13e0a
PH
1526PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1527 exist provoked a memory error which could cause a segfault.
1528
f625cc5a
PH
1529PH/15 Installed PCRE 6.2
1530
1531PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1532
21f7af35
PH
1533PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1534 of the problem. Specifically, suggested +O2 rather than +O1 for the
1535 HP-UX compiler.
1536
31480e42
PH
1537PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1538
2d280592
PH
1539PH/20 If a delivery was routed to a non-standard port by means of an SRV
1540 record, the port was not correctly logged when the outgoing_port log
1541 selector was set (it logged the transort's default port).
1542
7cd1141b
PH
1543PH/21 Added support for host-specific ports to manualroute, queryprogram,
1544 fallback_hosts, and "hosts" in the smtp transport.
1545
1546PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1547 host errors such as "Connection refused".
1548
750af86e
PH
1549PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1550 authentication with radiusclient 0.4.9:
1551
1552 - Error returned from rc_read_config was caught wrongly
1553 - Username/password not passed on to radius server due to wrong length.
1554
1555 The presumption is that some radiusclient API changes for 4.51/PH/17
1556 were not taken care of correctly. The code is still untested by me (my
1557 Linux distribution still has 0.3.2 of radiusclient), but it was
1558 contributed by a Radius user.
1559
1560PH/24 When doing a callout, the value of $domain wasn't set correctly when
1561 expanding the "port" option of the smtp transport.
1562
4304270b
TK
1563TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1564 while reading a MIME header. Thanks to Tom Hughes for a patch.
1565
750af86e
PH
1566PH/24 Include config.h inside local_scan.h so that configuration settings are
1567 available.
1568
64ffc24f
PH
1569PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1570 that in an ACL for RCPT (for example), you can examine exactly what was
1571 received.
1572
5dd9625b
PH
1573PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1574 commands, but it was not correctly comparing the address with the actual
1575 client host address. Thus, it would show the EHLO address in Received:
1576 header lines when this was not necessary.
1577
5591031b
PH
1578PH/27 Added the % operator to ${eval:}.
1579
ba18e66a
PH
1580PH/28 Exim tries to create and chdir to its spool directory when it starts;
1581 it should be ignoring failures (because with -C, for example, it has lost
1582 privilege). It wasn't ignoring creation failures other than "already
1583 exists".
1584
9cec981f
PH
1585PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1586 -bV or -d is used.
1587
aa2b5c79
PH
1588PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1589 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1590 too many continuations, the temporary file was not being removed, and the
1591 return code was incorrect.
aa2b5c79 1592
48a53b7f
PH
1593PH/31 Missing "BOOL" in function definition in filtertest.c.
1594
1c59d63b
PH
1595PH/32 Applied Sieve patches from the maintainer.
1596
671012da
TK
1597TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1598
1509d3a8
PH
1599PH/33 Added "verify = not_blind".
1600
1601PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1602 Local/Makefile (with some defaults set). These are used in built scripts
1603 such as exicyclog, but they have never been used in the exim_install
1604 script (though there are many overriding facilities there). I have
1605 arranged that the exim_install script now takes note of these two
1606 settings.
1607
1608PH/35 Installed configuration files for Dragonfly.
1609
2fe1a124
PH
1610PH/36 When a locally submitted message by a trusted user did not contain a
1611 From: header, and the sender address was obtained from -f or from an SMTP
1612 MAIL command, and the trusted user did not use -F to supply a sender
1613 name, $originator_name was incorrectly used when constructing a From:
1614 header. Furthermore, $originator_name was used for submission mode
1615 messages from external hosts without From: headers in a similar way,
1616 which is clearly wrong.
1617
8800895a
PH
1618PH/37 Added control=suppress_local_fixups.
1619
ccfdb010
PH
1620PH/38 When log_selector = +received_sender was set, and the addition of the
1621 sender made the log line's construction buffer exactly full, or one byte
1622 less than full, an overflow happened when the terminating "\n" was
1623 subsequently added.
1624
1130bfb0
PH
1625PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1626 when the result of a list match is failure because a DNS lookup failed.
1627
ebcb507f
PH
1628PH/40 RM_COMMAND is now used in the building process.
1629
c35e155c
PH
1630PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1631 the "build-* directories that it finds.
1632
95d1f782
PH
1633PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1634 address in a domain literal was a prefix of an interface address.
1635
fd6de02e
PH
1636PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1637 when verifying a sender address, unless rewrite_headers is false.
1638
58de37c5
PH
1639PH/44 Wrote a long comment about why errors_to addresses are verified as
1640 recipients, not senders.
1641
261cf466
TF
1642TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1643 the ratelimit ACL was added.
1644
3ee512ff
PH
1645PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1646
e08c430f
PH
1647PH/46 Added extra information about PostgreSQL errors to the error string.
1648
bef5a11f
PH
1649PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1650 avoiding the need to install special zones in a real server. This is
1651 backwards compatible; if it can't find the fake resolver, it drops back.
1652 Thus, both old and new test suites can be run.
1653
7546de58
TF
1654TF/02 Added util/ratelimit.pl
1655
e5d5a95f
TF
1656TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1657 clock is set back in time.
1658
2e88a017
TF
1659TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1660 Candler <B.Candler@pobox.com>.
1661
a5f65aa4
TF
1662TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1663 OK for addresses that are the result of redirections.
1664
e7726cbf
PH
1665PH/48 A number of further additions for the benefit of the new test suite,
1666 including a fake gethostbyname() that interfaces to the fake DNS resolver
1667 (see PH/47 above).
1668
a7fdad5b
TF
1669TF/06 The fix for widen_domains has also been applied to qualify_single and
1670 search_parents which are the other dnslookup options that can cause
1671 header rewrites.
1672
6af56900
PH
1673PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1674 type ("H").
1675
0925ede6
PH
1676PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1677
66afa403
TF
1678TF/07 Exim produced the error message "an SRV record indicated no SMTP
1679 service" if it encountered an MX record with an empty target hostname.
1680 The message is now "an MX or SRV record indicated no SMTP service".
1681
0154e85a
TF
1682TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1683 if the DNS of the sending site is misconfigured. This is quite a
1684 common situation. This change restores the behaviour of treating a
1685 helo verification defer as a failure.
1686
16f12c76
PH
1687PH/51 If self=fail was set on a router, the bounce message did not include the
1688 actual error message.
1689
bbe902f0 1690
e5a9dba6
PH
1691Exim version 4.52
1692-----------------
1693
1694TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1695
22c3b60b
PH
1696PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1697 command itself ended in error, the underlying message about the transport
1698 filter timeout was being overwritten with the pipe command error. Now the
1699 underlying error message should be appended to the second error message.
1700
06a9b4b5
PH
1701TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1702
c1ac6996
PH
1703PH/02 Reduce the amount of output that "make" produces by default. Full output
1704 can still be requested.
1705
9c7a242c
PH
1706PH/03 The warning log line about a condition test deferring for a "warn" verb
1707 was being output only once per connection, rather than after each
1708 occurrence (because it was using the same function as for successful
1709 "warn" verbs). This seems wrong, so I have changed it.
1710
87ba3f5f
PH
1711TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1712 it should not have, which might have caused a crash in the right
1713 circumstances, but probably never did.
1714
1715PH/04 Installed a modified version of Tony Finch's patch to make submission
1716 mode fix the return path as well as the Sender: header line, and to
1717 add a /name= option so that you can make the user's friendly name appear
1718 in the header line.
1719
29aba418
TF
1720TF/03 Added the control = fakedefer ACL modifier.
1721
fe0dab11
TF
1722TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1723 Mark Lowes for thorough testing.
870f6ba8 1724
11d337a4
TK
1725TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1726
1727TK/03 Merged latest SRS patch from Miles Wilton.
1728
415c8f3b
PH
1729PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1730 with the definition in sysexits.h (which is #included earlier).
1731 Fortunately, Exim does not actually use EX_OK. The code used to try to
1732 preserve the sysexits.h value, by assumimg that macro definitions were
1733 scanned for macro replacements. I have been disabused of this notion,
1734 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1735
958541e9
PH
1736PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1737 in the smtp transport. When a block could not be written in a single
1738 write() function, the timeout was being re-applied to each part-write.
1739 This seems wrong - if the receiver was accepting one byte at a time it
1740 would take for ever. The timeout is now adjusted when this happens. It
1741 doesn't have to be particularly precise.
1742
c206415f
TK
1743TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1744 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1745
2a4be8f9
PH
1746PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1747 without a domain if the check to <postmaster@domain> fails.
1748
1cba11c5
SC
1749SC/01 Eximstats: added -xls and the ability to specify output files
1750 (patch written by Frank Heydlauf).
1751
1752SC/02 Eximstats: use FileHandles for outputing results.
1753
1754SC/03 Eximstats: allow any combination of xls, txt, and html output.
1755
1756SC/04 Eximstats: fixed display of large numbers with -nvr option
1757
1758SC/05 Eximstats: fixed merging of reports with empty tables.
1759
1760SC/06 Eximstats: added the -include_original_destination flag
1761
1762SC/07 Eximstats: removed tabs and trailing whitespace.
1763
1005d00e
TK
1764TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1765
1766TK/06 MBOX spool code: Add real "From " MBOX separator line
1767 so the .eml file is really in mbox format (even though
1768 most programs do not really care). Patch from Alex Miller.
1769
1770TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1771 The latter is generated from $received_to and is only set if the
1772 message has one envelope recipient. SA can use these headers,
1773 obviously out-of-the-box. Patch from Alex Miller.
1774
9b4768fa
PH
1775PH/08 The ${def test on a variable was returning false if the variable's
1776 value was "0", contrary to what the specification has always said!
1777 The result should be true unless the variable is empty.
1778
1779PH/09 The syntax error of a character other than { following "${if
1780 def:variable_name" (after optional whitespace) was not being diagnosed.
1781 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1782 accidental colon was present, for example, could give incorrect results.
1783
0d7eb84a
PH
1784PH/10 Tidied the code in a number of places where the st_size field of a stat()
1785 result is used (not including appendfile, where other changes are about
1786 to be made).
1787
1788PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1789 This involved changing a lot of size variables from int to off_t. It
1790 should work with maildirs and everything.
1791
40727bee
TK
1792TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1793 spamd dying while we are connected to it.
1794
554d2369
TF
1795TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1796 <jgh@wizmail.org>
1797
1f922db1
PH
1798PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1799 function for BDB 4.3.
1800
ef213c3b
PH
1801PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1802
8ac170f3
PH
1803PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1804 the sources for PCRE have been re-arranged and more files are now
1805 involved.
1806
b1c749bb
PH
1807PH/15 The code I had for printing potentially long long variables in PH/11
1808 above was not the best (it lost precision). The length of off_t variables
1809 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1810 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1811 to be "long long int" or "long int". This is needed for the internal
1812 formatting function string_vformat().
b1c749bb 1813
4aac9b49
PH
1814PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1815 the configuration file to be ":syslog", then the script "guesses" where
1816 the logs files are, rather than using the compiled in default. In our
1817 case the guess is not the same as the compiled default, so the script
1818 suddenly stopped working when I started to use syslog. The patch checks
1819 to see if log_file_path is "". If so, it attempts to read it from exim
1820 with no configuration file to get the compiled in version, before it
1821 falls back to the previous guessing code."
1822
294520c8
TK
1823TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1824 implementing BATV in an Exim configuration. See NewStuff for the gory
1825 details.
1826
5bd022fe
PH
1827PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1828 Makefile that are specific to HP-UX.
1829
90e9ce59
PH
1830PH/18 If the "use_postmaster" option was set for a recipient callout together
1831 with the "random" option, the postmaster address was used as the MAIL
1832 FROM address for the random test, but not for the subsequent recipient
1833 test. It is now used for both.
1834
5ea81592
PH
1835PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1836 patch removes a few documentation additions to RFC 3028, because the
1837 latest draft now contains them. It adds the new en;ascii-case comparator
1838 and a new error check for 8bit text in MIME parts. Comparator and
1839 require names are now matched exactly. I enabled the subaddress
1840 extension, but it is not well tested yet (read: it works for me)."
1841
c6c2dc1d
PH
1842PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1843 rework some of the code of TK/09 above to avoid the hardwired use of
1844 "%lld" and "long long". Replaced the call to snprintf() with a call to
1845 string_vformat().
1846
fffffe4c
PH
1847PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1848 records point to non-existent hosts", "retry timeout exceeded", and
1849 "retry time not reached for any host after a long failure period".
ca02eafb 1850
9a26b6b2
PH
1851PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1852 experimental DomainKeys support:
1853
1854 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1855 (2) On an error such as an illegally used "control", the wrong name for
1856 the control was given.
1857
1858 These problems did NOT occur unless DomainKeys support was compiled.
1859
4aee0225
PH
1860PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1861
32d668a5
PH
1862PH/24 Added ${if match_ip condition.
1863
8187c3f3
PH
1864PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1865 databases so that it will be absolutely obvious if a crash occurs in the
1866 DB library. This is a regular occurrence (often caused by mis-matched
1867 db.h files).
1868
ff790e47 1869PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1870 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1871 picked up on a user's system that detects such things. There doesn't seem
1872 to be a gcc warning option for this - only an attribute that has to be
1873 put on the function's prototype. It seems that in Fedora Core 4 they have
1874 set this on a number of new functions. No doubt there will be more in due
1875 course.
ff790e47 1876
5417f6d1
PH
1877PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1878 specify a transport. However, if an address that was verified by such a
1879 router was the subject of a callout, Exim crashed because it tried to
1880 read the rcpt_include_affixes from the non-existent transport. Now it
1881 just assumes that the setting of that option is false. This bug was
1882 introduced by 4.51/PH/31.
1883
59cf8544
PH
1884PH/28 Changed -d+all to exclude +memory, because that information is very
1885 rarely of interest, but it makes the output a lot bigger. People tend to
1886 do -d+all out of habit.
1887
e7ad8a65
PH
1888PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1889 code in os-type was giving problems when libc.so lives in lib64, like on
1890 x86_64 Fedora Core.
1891
ade42478
PH
1892PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1893 aren't the modern standard, and it seems that some systems' include files
1894 don't always have them. Exim was already checking for some of the newer
1895 ones like T_AAAA, and defining it itself. I've added checks for all the
1896 record types that Exim uses.
1897
182ad5cf
PH
1898PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1899 not automatically generating a new one, as it is supposed to. This
1900 prevented TLS from working. If the file did exist, but contained invalid
1901 data, a new version was generated, as expected. It was only the case of a
1902 non-existent file that was broken.
1903
b0d9fc80
TK
1904TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1905 with a change in libdomainkeys > 0.64.
1906
1907TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1908 from DNS. If the selector record carries the flag, it now has
1909 precedence over the domain-wide flag.
1910
1911TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1912
47c7a64a
PH
1913PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1914 the use of a port name that isn't defined in /etc/services) occurred, the
1915 message was deferred as in a normal delivery, and thus remained on the
1916 spool, instead of being failed because of the mua_wrapper setting. This
1917 is now fixed, and I tidied up some of the mua_wrapper messages at the
1918 same time.
1919
a388bce4
SC
1920SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1921 the messages in a hash of arrays rather than using individual hashes.
1922 This is a bit cleaner and results in dramatic memory savings, albeit
1923 at a slight CPU cost.
1924
1925SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1926 as requested by Marc Sherman.
1927
1928SC/10 Eximstats: added histograms for user specified patterns as requested
1929 by Marc Sherman.
1930
0793e4ed
SC
1931SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1932
c58b88df
PH
1933PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1934 fopen() in the content-scanning modules that did not already have it.
1935
e7ad8a65 1936
7982096b
PH
1937Exim version 4.51
1938-----------------
1939
1a46a8c5
PH
1940TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1941 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1942
2f079f46 1943TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1944
1945TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1946
1947PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1948 to test Sieve filters that use "vacation".
1949
1950PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1951 that changes the way the GnuTLS parameters are stored in the cache file.
1952 The new format can be generated externally. For backward compatibility,
1953 if the data in the cache doesn't make sense, Exim assumes it has read an
1954 old-format file, and it generates new data and writes a new file. This
1955 means that you can't go back to an older release without removing the
1956 file.
1957
1958PH/03 A redirect router that has both "unseen" and "one_time" set does not
1959 work if there are any delivery delays because "one_time" forces the
1960 parent to be marked "delivered", so its unseen clone is never tried
1961 again. For this reason, Exim now forbids the simultaneous setting of
1962 these two options.
1963
1964PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1965 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1966 entry if you want to know the details. The fix, however, neglected to
1967 consider the case when local delivery batching is involved. The test for
1968 "previously delivered" was not happening when checking to see if an
1969 address could be batched with a previous (undelivered) one; under
1970 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1971 address.
1a46a8c5
PH
1972
1973PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1974 in its include files, and this causes problems building Exim.
1975
1976PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1977 header_syntax) but Exim was just ignoring anything given after a slash.
1978 In particular, this caused confusion with an attempt to use "verify =
1979 reverse_host_lookup/defer_ok". An error is now given when options are
1980 supplied for verify items that do not have them. (Maybe reverse_host_
1981 lookup should have a defer_ok option, but that's a different point.)
1982
1983PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1984 defined by RFC 821) to 2048, because there were problems with some AUTH
1985 commands, and RFC 1869 says the size should be increased for extended
1986 SMTP commands that take arguments.
1987
1988PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1989 Finch).
1990
1991PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1992 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1993
49c2d5ea
PH
1994PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1995 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1996 whatever). Otherwise the password may appear in the log. Following change
1997 PH/42 below, there is no longer a chance of it appearing in a bounce
1998 message.
49c2d5ea 1999
bf759a8b
PH
2000PH/11 Installed exipick version 20050225.0 from John Jetmore.
2001
83364d30
PH
2002PH/12 If the last host in a fallback_hosts list was multihomed, only the first
2003 of its addresses was ever tried. (Bugzilla bug #2.)
2004
7999bbd7
PH
2005PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
2006 the result incorrectly in the debug output. (It correctly added a newline
2007 to what was transported.)
2008
7dbf77c9
PH
2009TF/01 Added $received_time.
2010
74e0617f
PH
2011PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
2012 commented out examples of how to interface to a virus scanner and to
2013 SpamAssassin. Also added commented examples of av_scanner and
2014 spamd_address settings.
2015
2f079f46
PH
2016PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2017 and controls are allowed in which ACLs. There were a couple of minor
2018 errors. Some of the entries in the conditions table (which is a table of
2019 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2020 negation of where the condition IS allowed.
2021
8c841523
PH
2022PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2023
7766a4f0
PH
2024PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2025 header file does not have a version number, so I've had to invent a new
2026 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2027 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2028 radiusclient), but it was contributed by a Radius user.
2029
8b417f2c
PH
2030PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2031 files or directories, for OpenSSL.
2032
901f42cb
PH
2033PH/19 When an Exim process that is running as root has to create an Exim log
2034 file, it does so in a subprocess that runs as exim:exim so as to get the
2035 ownership right at creation (otherwise, other Exim processes might see
2036 the file with the wrong ownership). There was no test for failure of this
2037 fork() call, which would lead to the process getting stuck as it waited
2038 for a non-existent subprocess. Forks do occasionally fail when resources
2039 run out. I reviewed all the other calls to fork(); they all seem to check
2040 for failure.
2041
f9b9210e
PH
2042PH/20 When checking for unexpected SMTP input at connect time (before writing
2043 the banner), Exim was not dealing correctly with a non-positive return
2044 from the read() function. If the client had disconnected by this time,
2045 the result was a log entry for a synchronization error with an empty
2046 string after "input=" when read() returned zero. If read() returned -1
2047 (an event I could not check), uninitialized data bytes were printed.
2048 There were reports of junk text (parts of files, etc) appearing after
2049 "input=".
2050
54cdb463
PH
2051PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2052
cf00dad6
PH
2053PH/22 Added support for macro redefinition, and (re)definition in between
2054 driver and ACL definitions.
2055
acb1b346
PH
2056PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2057 forgetting to use the resulting value; it was using the unexpanded value.
2058
c5ddb310
PH
2059PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2060 hadn't been configured. The fix is from Juergen Kreileder, who
2061 understands it better than I do:
2062
2063 "Here's what I see happening with three configured cyrus_sasl
2064 authenticators configured (plain, login, cram-md5):
2065
2066 On startup auth_cyrus_sasl_init() gets called for each of these.
2067 This means three calls to sasl_listmech() without a specified mech_list.
2068 => SASL tests which mechs of all available mechs actually work
2069 => three warnings about OTP not working
2070 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2071
2072 With the patch, sasl_listmech() also gets called three times. But now
2073 SASL's mech_list option is set to the server_mech specified in the the
2074 authenticator. Or in other words, the answer from sasl_listmech()
2075 gets limited to just the mech you're testing for (which is different
2076 for each call.)
2077 => the return list contains just 'plain' or 'login', 'cram-md5' or
2078 nothing depending on the value of ob->server_mech.
2079
2080 I've just tested the patch: Authentication still works fine,
2081 unavailable mechs specified in the exim configuration are still
2082 caught, and the auth.log warnings about OTP are gone."
2083
31619da6
PH
2084PH/25 When debugging is enabled, the contents of the command line are added
2085 to the debugging output, even when log_selector=+arguments is not
2086 specified.
2087
bebaf0fc
PH
2088PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2089 answer is "GNU", and only if the return is "GNU/something" is the answer
2090 "Linux".
2091
475fe28a
PH
2092PH/27 $acl_verify_message is now set immediately after the failure of a
2093 verification in an ACL, and so is available in subsequent modifiers. In
2094 particular, the message can be preserved by coding like this:
2095
2096 warn !verify = sender
2097 set acl_m0 = $acl_verify_message
2098
2099 Previously, $acl_verify_message was set only while expanding "message"
2100 and "log_message" when a very denied access.
2101
7e8bec7a
PH
2102PH/28 Modified OS/os.c-Linux with
2103
2104 -#ifndef OS_LOAD_AVERAGE
2105 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2106
2107 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2108 nomenclature these days.)
2109
e4a89c47
PH
2110PH/29 Installed patch from the Sieve maintainer that adds the options
2111 sieve_useraddress and sieve_subaddress to the redirect router.
2112
5ca2a9a1
PH
2113PH/30 In these circumstances:
2114 . Two addresses routed to the same list of hosts;
2115 . First host does not offer TLS;
2116 . First host accepts first address;
2117 . First host gives temporary error to second address;
2118 . Second host offers TLS and a TLS session is established;
2119 . Second host accepts second address.
2120 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2121 and peerdn, if requested) that were in fact used only for the second
2122 address.
7e8bec7a 2123
c688b954
PH
2124PH/31 When doing a callout as part of verifying an address, Exim was not paying
2125 attention to any local part prefix or suffix that was matched by the
2126 router that accepted the address. It now behaves in the same way as it
2127 does for delivery: the affixes are removed from the local part unless
2128 rcpt_include_affixes is set on the transport.
2129
fed77020
PH
2130PH/32 Add the sender address, as F=<...>, to the log line when logging a
2131 timeout during the DATA phase of an incoming message.
2132
7fe1560f
PH
2133PH/33 Sieve envelope tests were broken for match types other than :is. I have
2134 applied a patch sanctioned by the Sieve maintainer.
c688b954 2135
ebb6e6d5
PH
2136PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2137 the uid or gid is negative. A case of a negative gid caused this to be
2138 noticed. The fix allows for either to be negative.
2139
9c4e8f60
PH
2140PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2141 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2142 overlooked.
2143
2144PH/36 The change PH/12 above was broken. Fixed it.
2145
d7174846
PH
2146PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2147 the grounds that routing the same address twice would always produce the
2148 same answer. This might have been true once, but it is certainly no
2149 longer true now. Routing a child address may depend on the previous
2150 routing that produced that child. Some complicated redirection strategies
2151 went wrong when messages had multiple recipients, and made Exim's
2152 behaviour dependent on the order in which the addresses were given.
2153
2154 I have moved the duplicate checking until after the routing is complete.
2155 Exim scans the addresses that are assigned to local and remote
2156 transports, and removes any duplicates. This means that more work will be
2157 done, as duplicates will always all be routed, but duplicates are
2158 presumably rare, so I don't expect this is of any significance.
2159
2160 For deliveries to pipes, files, and autoreplies, the duplicate checking
2161 still happens during the routing process, since they are not going to be
2162 routed further.
2163
cfe75fc3
PH
2164PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2165 It corrects a timeout issue with spamd. This is Ian's comment: "The
2166 background is that sometimes spamd either never reads data from a
2167 connection it has accepted, or it never writes response data. The exiscan
2168 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2169 blindly assumes that writes won't block so it may never time out."
2170
be22d70e
PH
2171PH/39 Allow G after quota size as well as K and M.
2172
0612b098
PH
2173PH/40 The value set for $authenticated_id in an authenticator may not contain
2174 binary zeroes or newlines because the value is written to log lines and
2175 to spool files. There was no check on this. Now the value is run through
2176 the string_printing() function so that such characters are converted to
2177 printable escape sequences.
2178
2e0c1448
PH
2179PH/41 $message_linecount is a new variable that contains the total number of
2180 lines in the message. Compare $body_linecount, which is the count for the
2181 body only.
2182
447d236c
PH
2183PH/42 Exim no longer gives details of delivery errors for specific addresses in
2184 bounce and delay warning messages, except in certain special cases, which
2185 are as follows:
2186
2187 (a) An SMTP error message from a remote host;
2188 (b) A message specified in a :fail: redirection;
2189 (c) A message specified in a "fail" command in a system filter;
2190 (d) A message specified in a FAIL return from the queryprogram router;
2191 (e) A message specified by the cannot_route_message router option.
2192
2193 In these cases only, Exim does include the error details in bounce and
2194 warning messages. There are also a few cases where bland messages such
2195 as "unrouteable address" or "local delivery error" are given.
2196
d20976dc
PH
2197PH/43 $value is now also set for the "else" part of a ${run expansion.
2198
f656d135
PH
2199PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2200 being worked on, but at least Exim now implements the latest version to
2201 play with."
2202
2e2a30b4
PH
2203PH/45 In a pipe transport, although a timeout while waiting for the pipe
2204 process to complete was treated as a delivery failure, a timeout while
2205 writing the message to the pipe was logged, but erroneously treated as a
2206 successful delivery. Such timeouts include transport filter timeouts. For
2207 consistency with the overall process timeout, these timeouts are now
2208 treated as errors, giving rise to delivery failures by default. However,
2209 there is now a new Boolean option for the pipe transport called
2210 timeout_defer, which, if set TRUE, converts the failures into defers for
2211 both kinds of timeout. A transport filter timeout is now identified in
2212 the log output.
2213
9176e9f0
PH
2214PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2215 systems where "make" and "gmake" are different, calling "gmake" at top
2216 level broke things. I've arranged for the value of $(MAKE) to be passed
2217 from the Makefile to this script so that it can call the same version of
2218 "make".
2219
7982096b 2220
bbe902f0
PH
2221A note about Exim versions 4.44 and 4.50
2222----------------------------------------
2223
2224Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2225changes of various kinds. As a consequence, a big documentation update was
2226needed. This delayed the release for rather longer than seemed good, especially
2227in the light of a couple of (minor) security issues. Therefore, the changes
2228that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2229release. So 4.44 and 4.50 are in effect two different branches that both start
2230from 4.43.
2231
2232I have left the 4.50 change log unchanged; it contains all the changes since
22334.43. The change log for 4.44 is below; many of its items are identical to
2234those for 4.50. This seems to be the most sensible way to preserve the
2235historical information.
2236
2237
f7b63901 2238Exim version 4.50
495ae4b0
PH
2239-----------------
2240
5fe762f6
PH
2241 1. Minor wording change to the doc/README.SIEVE file.
2242
139059f6 2243 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2244 computation of the current number of files was incorrect.
495ae4b0 2245
7086e875
PH
2246 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2247 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2248 place.
2249
35af9f61
PH
2250 4. Give more explanation in the error message when the command for a transport
2251 filter fails to execute.
2252
b668c215
PH
2253 5. There are several places where Exim runs a non-Exim command in a
2254 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2255 was being done only for the command run by the queryprogram router. It is
2256 now done for all such subprocesses. The other cases are: ${run, transport
2257 filters, and the commands run by the lmtp and pipe transports.
2258
a494b1e1
PH
2259 6. Added CONFIGURE_GROUP build-time option.
2260
2261 7. Some older OS have a limit of 256 on the maximum number of file
2262 descriptors. Exim was using setrlimit() to set 1000 as a large value
2263 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2264 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2265
c5fcb476
PH
2266 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2267 was an oversight, and furthermore, ever since the addition of extra
2268 controls (e.g. 4.43/32), the checks on when to allow different forms of
2269 "control" were broken. There should now be diagnostics for all cases when a
2270 control that does not make sense is encountered.
2271
69358f02
PH
2272 9. Added the /retain_sender option to "control=submission".
2273
5be20824
PH
227410. $recipients is now available in the predata ACL (oversight).
2275
eb2c0248
PH
227611. Tidy the search cache before the fork to do a delivery from a message
2277 received from the command line. Otherwise the child will trigger a lookup
2278 failure and thereby defer the delivery if it tries to use (for example) a
2279 cached ldap connection that the parent has called unbind on.
2280
2a3eea10
PH
228112. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2282 of $address_data from the recipient verification was clobbered by the
2283 sender verification.
2284
228513. The value of address_data from a sender verification is now available in
2286 $sender_address_data in subsequent conditions in the ACL statement.
2287
23c7ff99
PH
228814. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2289
4deaf07d
PH
229015. Added a new option "connect=<time>" to callout options, to set a different
2291 connection timeout.
2292
926e1192
PH
229316. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2294 was its contents. (It was OK if the option was not defined at all.)
2295
650edc6f
PH
229617. A "Completed" log line is now written for messages that are removed from
2297 the spool by the -Mrm option.
2298
2c7db3f5
PH
229918. New variables $sender_verify_failure and $recipient_verify_failure contain
2300 information about exactly what failed.
2301
3d235903
PH
230219. Added -dd to debug only the daemon process.
2303
7c7ad977
PH
230420. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2305 handles timeouts, both on the server side and network timeouts. Renamed the
2306 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2307
981756db
PH
230821. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2309 It is now set to "smtps".
2310
d4eb88df
PH
231122. $host_address is now set to the target address during the checking of
2312 ignore_target_hosts.
2313
231423. When checking ignore_target_hosts for an ipliteral router, no host name was
2315 being passed; this would have caused $sender_host_name to have been used if
2316 matching the list had actually called for a host name (not very likely,
2317 since this list is usually IP addresses). A host name is now passed as
2318 "[x.x.x.x]".
2319
7d468ab8
PH
232024. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2321 code that specifies a non-restarting handler (typically sigaction() in
2322 modern systems) in an attempt to fix a rare and obscure crash bug.
2323
232425. Narrowed the window for a race in the daemon that could cause it to ignore
2325 SIGCHLD signals. This is not a major problem, because they are used only to
2326 wake it up if nothing else does.
2327
62c0818f
PH
232826. A malformed maildirsize file could cause Exim to calculate negative values
2329 for the mailbox size or file count. Odd effects could occur as a result.
2330 The maildirsize information is now recalculated if the size or filecount
2331 end up negative.
2332
26034054
PH
233327. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2334 support for a long time. Removed HAVE_SYS_VFS_H.
2335
af66f652
PH
233628. Installed the latest version of exipick from John Jetmore.
2337
90af77f4
PH
233829. In an address list, if the pattern was not a regular expression, an empty
2339 subject address (from a bounce message) matched only if the pattern was an
2340 empty string. Non-empty patterns were not even tested. This was the wrong
2341 because it is perfectly reasonable to use an empty address as part of a
2342 database query. An empty address is now tested by patterns that are
2343 lookups. However, all the other forms of pattern expect the subject to
2344 contain a local part and a domain, and therefore, for them, an empty
2345 address still always fails if the pattern is not itself empty.
2346
d8ef3577
PH
234730. Exim went into a mad DNS loop when attempting to do a callout where the
2348 host was specified on an smtp transport, and looking it up yielded more
2349 than one IP address.
2350
5cb8cbc6
PH
235131. Re-factored the code for checking spool and log partition space into a
2352 function that finds that data and another that does the check. The former
2353 is then used to implement four new variables: $spool_space, $log_space,
2354 $spool_inodes, and $log_inodes.
2355
14702f5b
PH
235632. The RFC2047 encoding function was originally intended for short strings
2357 such as real names; it was not keeping to the 75-character limit for
2358 encoded words that the RFC imposes. It now respects the limit, and
2359 generates multiple encoded words if necessary. To be on the safe side, I
2360 have increased the buffer size for the ${rfc2047: expansion operator from
2361 1024 to 2048 bytes.
2362
063b1e99
PH
236333. It is now permitted to omit both strings after an "if" condition; if the
2364 condition is true, the result is "true". As before, when the second string
2365 is omitted, a false condition yields an empty string. This makes it less
2366 cumbersome to write custom ACL and router conditions.
2367
652e1b65
PH
236834. Failure to deliver a bounce message always caused it to be frozen, even if
2369 there was an errors_to setting on the router. The errors_to setting is now
2370 respected.
2371
6f0c9a4f
PH
237235. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2373 canonical form (fully expanded) before being placed in
2374 $sender_host_address.
2375
33397d19
PH
237636. The table in the code that translates DNS record types into text (T_A to
2377 "A" for instance) was missing entries for NS and CNAME. It is just possible
2378 that this could have caused confusion if both these types were looked up
2379 for the same domain, because the text type is used as part of Exim's
2380 per-process caching. But the chance of anyone hitting this buglet seems
2381 very small.
2382
7bb56e1f
PH
238337. The dnsdb lookup has been extended in a number of ways.
2384
2385 (1) There is a new type, "zns", which walks up the domain tree until it
2386 finds some nameserver records. It should be used with care.
2387
ea3bc19b
PH
2388 (2) There is a new type, "mxh", which is like "mx" except that it returns
2389 just the host names, not the priorities.
2390
2391 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2392 looked up. The behaviour when one of the lookups defers can be
2393 controlled by a keyword.
7bb56e1f 2394
ea3bc19b 2395 (4) It is now possible to specify the separator character for use when
7bb56e1f 2396 multiple records are returned.
33397d19 2397
0bcb2a0e
PH
239838. The dnslists ACL condition has been extended: it is now possible to supply
2399 a list of IP addresses and/or domains to be looked up in a particular DNS
2400 domain.
2401
2ac0e484
PH
240239. Added log_selector=+queue_time_overall.
2403
4e1fde53
PH
240440. When running the queue in the test harness, wait just a tad after forking a
2405 delivery process, to get repeatability of debugging output.
2406
de365ded
PH
240741. Include certificate and key file names in error message when GnuTLS fails
2408 to set them up, because the GnuTLS error message doesn't include the name
2409 of the failing file when there is a problem reading it.
2410
f05da2e8
PH
241142. Allow both -bf and -bF in the same test run.
2412
d6453af2
PH
241343. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2414
f7b63901
PH
241544. The "Exiscan patch" is now merged into the mainline Exim source.
2416
241745. Sometimes the final signoff response after QUIT could fail to get
2418 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2419 < 0 before doing a fflush(). This bug looks as though it goes back to the
2420 introduction of TLS in release 3.20, but "sometimes" must have been rare
2421 because the tests only now provoked it.
2422
a444213a
PH
242346. Reset the locale to "C" after calling embedded Perl, in case it was changed
2424 (this can affect the format of dates).
2425
0ec020ea
PH
242647. exim_tidydb, when checking for the continued existence of a message for
2427 which it has found a message-specific retry record, was not finding
2428 messages that were in split spool directories. Consequently, it was
2429 deleting retry records that should have stayed in existence.
2430
b1206957
PH
243148. Steve fixed some bugs in eximstats.
2432
243349. The SPA authentication driver was not abandoning authentication and moving
2434 on to the next authenticator when an expansion was forced to fail,
2435 contradicting the general specification for all authenticators. Instead it
2436 was generating a temporary error. It now behaves as specified.
2437
26dd5a95
PH
243850. The default ordering of permitted cipher suites for GnuTLS was pessimal
2439 (the order specifies the preference for clients). The order is now AES256,
2440 AES128, 3DES, ARCFOUR128.
2441
343b2385
PH
244251. Small patch to Sieve code - explicitly set From: when generating an
2443 autoreply.
2444
1c5466b9
PH
244552. Exim crashed if a remote delivery caused a very long error message to be
2446 recorded - for instance if somebody sent an entire SpamAssassin report back
2447 as a large number of 550 error lines. This bug was coincidentally fixed by
2448 increasing the size of one of Exim's internal buffers (big_buffer) that
2449 happened as part of the Exiscan merge. However, to be on the safe side, I
2450 have made the code more robust (and fixed the comments that describe what
2451 is going on).
2452
55ee9ee3
PH
245353. Now that there can be additional text after "Completed" in log lines (if
2454 the queue_time_overall log selector is set), a one-byte patch to exigrep
2455 was needed to allow it to recognize "Completed" as not the last thing in
2456 the line.
2457
d38f8232
PH
245854. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2459 patch that reportedly fixes this has been added. I am not expert enough to
2460 create a test for it. This is what the patch creator wrote:
2461
2462 "I found a little strange behaviour of ldap code when working with
2463 Windows 2003 AD Domain, where users was placed in more than one
2464 Organization Units. When I tried to give exim partial DN, the exit code
2465 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2466 But simultaneously result of request was absolutely normal ldap result,
2467 so I produce this patch..."
2468
3295e65b
PH
2469 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2470 REFERENCE, so I have modified the code to exclude the patch when that macro
2471 is not defined.
2472
7102e136
PH
247355. Some experimental protocols are using DNS PTR records for new purposes. The
2474 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2475 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2476 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2477 CAN-2005-0021
7102e136 2478
3ca0ba97
PH
247956. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2480
c2bcbe20
PH
248157. Double the size of the debug message buffer (to 2048) so that more of very
2482 long debug lines gets shown.
2483
18ce445d
PH
248458. The exicyclog utility now does better if the number of log files to keep
2485 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2486
1f5b4c3d
PH
248759. Two changes related to the smtp_active_hostname option:
2488
2489 (1) $smtp_active_hostname is now available as a variable.
2490 (2) The default for smtp_banner uses $smtp_active_hostname instead
2491 of $primary_hostname.
2492
b975ba52
PH
249360. The host_aton() function is supposed to be passed a string that is known
2494 to be a valid IP address. However, in the case of IPv6 addresses, it was
2495 not checking this. This is a hostage to fortune. Exim now panics and dies
2496 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2497 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2498 components; fortuitously, this particular loophole had already been fixed
2499 by change 4.50/55 above.
2500
2501 If there are any other similar loopholes, the new check in host_aton()
2502 itself should stop them being exploited. The report I received stated that
2503 data on the command line could provoke the exploit when Exim was running as
2504 exim, but did not say which command line option was involved. All I could
2505 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2506 running as the user.
ea3a6f44 2507 CAN-2005-0021
85b87bc2
PH
2508
250961. There was a buffer overflow vulnerability in the SPA authentication code
2510 (which came originally from the Samba project). I have added a test to the
2511 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2512 CAN-2005-0022
b975ba52 2513
17ffcae7
PH
251462. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2515 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2516
d95f9fdb
PH
251763. The daemon start-up calls getloadavg() while still root for those OS that
2518 need the first call to be done as root, but it missed one case: when
2519 deliver_queue_load_max is set with deliver_drop_privilege. This is
2520 necessary for the benefit of the queue runner, because there is no re-exec
2521 when deliver_drop_privilege is set.
2522
86b8287f
PH
252364. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2524 This has been fixed.
2525
60dc5e56
PH
252665. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2527 was in use, was not putting the data itself into the right store pool;
2528 consequently, it could be overwritten for a subsequent message in the same
2529 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2530 the caching.)
2531
533244af
PH
253266. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2533
a5a28604
PH
253467. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2535 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2536 the function were treating the return as a boolean value, which happened to
2537 work because 0=false and not-0=true, but is not correct code.
2538
7e634d24
PH
253968. The host_aton() function was not handling scoped IPv6 addresses (those
2540 with, for example, "%eth0" on the end) correctly.
2541
3e11c26b
PH
254269. Fixed some compiler warnings in acl.c for the bitmaps specified with
2543 negated items (that is, ~something) in unsigned ints. Some compilers
2544 apparently mutter when there is no cast.
2545
6729cf78
PH
254670. If an address verification called from an ACL failed, and did not produce a
2547 user-specific message (i.e. there was only a "system" message), nothing was
2548 put in $acl_verify_message. In this situation, it now puts the system
2549 message there.
2550
00f00ca5
PH
255171. Change 4.23/11 added synchronization checking at the start of an SMTP
2552 session; change 4.31/43 added the unwanted input to the log line - except
2553 that it did not do this in the start of session case. It now does.
2554
c9bdd01c
PH
255572. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2556 This is wrong and can cause the other end to generate a synchronization
2557 error if it is another Exim or anything else that does the synchronization
2558 check. A QUIT command is no longer sent after a timeout.
2559
d43194df
PH
256073. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2561 during host lookups.
2562
fe5b5d0b
PH
256374. The defer_ok option of callout verification was not working if it was used
2564 when verifying addresses in header lines, that is, for this case:
2565
2566 verify = header_sender/callout=defer_ok
2567
76a2d7ba
PH
256875. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2569 those file descriptors could be used for SMTP connections. If anything
2570 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2571 could be sent to the SMTP client, causing chaos. The daemon now opens
2572 stdin, stdout, and stderr to /dev/null when it puts itself into the
2573 background.
2574
257576. Arrange for output from Perl's "warn" command to be written to Exim's main
2576 log by default. The user can override this with suitable Perl magic.
2577
04f7d5b9
PH
257877. The use of log_message on a "discard" ACL verb, which is supposed to add to
2579 the log message when discard triggers, was not working for the DATA ACL or
2580 for the non-SMTP ACL.
2581
bc60667e
PH
258278. Error message wording change in sieve.c.
2583
bb6e88ff
PH
258479. If smtp_accept_max_per_host was set, the number of connections could be
2585 restricted to fewer than expected, because the daemon was trying to set up
2586 a new connection before checking whether the processes handling previous
2587 connections had finished. The check for completed processes is now done
2588 earlier. On busy systems, this bug wouldn't be noticed because something
2589 else would have woken the daemon, and it would have reaped the completed
2590 process earlier.
2591
1e70f85b
PH
259280. If a message was submitted locally by a user whose login name contained one
2593 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2594 It caused a spool format error. I have fixed the spool reading code. A
2595 related problem was that the "from" clause in the Received: line became
2596 illegal because of the space(s). It is now covered by ${quote_local_part.
2597
259881. Included the latest eximstats from Steve (adds average sizes to HTML Top
2599 tables).
2600
4e01f9d6
PH
260182. Updated OS/Makefile-AIX as per message from Mike Meredith.
2602
1ee1cef2
PH
260383. Patch from Sieve maintainer to fix unterminated string problem in
2604 "vacation" handling.
2605
6e2b4ccc
PH
260684. Some minor changes to the Linux configuration files to help with other
2607 OS variants using glibc.
2608
8e669ac1
PH
260985. One more patch for Sieve to update vacation handling to latest spec.
2610
495ae4b0 2611
bbe902f0
PH
2612----------------------------------------------------
2613See the note above about the 4.44 and 4.50 releases.
2614----------------------------------------------------
2615
2616
2617Exim version 4.44
2618-----------------
2619
2620 1. Change 4.43/35 introduced a bug that caused file counts to be
2621 incorrectly computed when quota_filecount was set in an appendfile
2622 transport
2623
2624 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2625 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2626 place.
2627
2628 3. Give more explanation in the error message when the command for a transport
2629 filter fails to execute.
2630
2631 4. There are several places where Exim runs a non-Exim command in a
2632 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2633 was being done only for the command run by the queryprogram router. It is
2634 now done for all such subprocesses. The other cases are: ${run, transport
2635 filters, and the commands run by the lmtp and pipe transports.
2636
2637 5. Some older OS have a limit of 256 on the maximum number of file
2638 descriptors. Exim was using setrlimit() to set 1000 as a large value
2639 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2640 systems. I've change it so that if it can't get 1000, it tries for 256.
2641
2642 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2643 was an oversight, and furthermore, ever since the addition of extra
2644 controls (e.g. 4.43/32), the checks on when to allow different forms of
2645 "control" were broken. There should now be diagnostics for all cases when a
2646 control that does not make sense is encountered.
2647
2648 7. $recipients is now available in the predata ACL (oversight).
2649
2650 8. Tidy the search cache before the fork to do a delivery from a message
2651 received from the command line. Otherwise the child will trigger a lookup
2652 failure and thereby defer the delivery if it tries to use (for example) a
2653 cached ldap connection that the parent has called unbind on.
2654
2655 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2656 of $address_data from the recipient verification was clobbered by the
2657 sender verification.
2658
265910. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2660 was its contents. (It was OK if the option was not defined at all.)
2661
266211. A "Completed" log line is now written for messages that are removed from
2663 the spool by the -Mrm option.
2664
266512. $host_address is now set to the target address during the checking of
2666 ignore_target_hosts.
2667
266813. When checking ignore_target_hosts for an ipliteral router, no host name was
2669 being passed; this would have caused $sender_host_name to have been used if
2670 matching the list had actually called for a host name (not very likely,
2671 since this list is usually IP addresses). A host name is now passed as
2672 "[x.x.x.x]".
2673
267414. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2675 code that specifies a non-restarting handler (typically sigaction() in
2676 modern systems) in an attempt to fix a rare and obscure crash bug.
2677
267815. Narrowed the window for a race in the daemon that could cause it to ignore
2679 SIGCHLD signals. This is not a major problem, because they are used only to
2680 wake it up if nothing else does.
2681
268216. A malformed maildirsize file could cause Exim to calculate negative values
2683 for the mailbox size or file count. Odd effects could occur as a result.
2684 The maildirsize information is now recalculated if the size or filecount
2685 end up negative.
2686
268717. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2688 support for a long time. Removed HAVE_SYS_VFS_H.
2689
ea3a6f44 269018. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2691
269219. Allow an empty sender to be matched against a lookup in an address list.
2693 Previously the only cases considered were a regular expression, or an
2694 empty pattern.
2695
269620. Exim went into a mad DNS lookup loop when doing a callout where the
2697 host was specified on the transport, if the DNS lookup yielded more than
2698 one IP address.
2699
ea3a6f44
NM
270021. The RFC2047 encoding function was originally intended for short strings
2701 such as real names; it was not keeping to the 75-character limit for
2702 encoded words that the RFC imposes. It now respects the limit, and
2703 generates multiple encoded words if necessary. To be on the safe side, I
2704 have increased the buffer size for the ${rfc2047: expansion operator from
2705 1024 to 2048 bytes.
bbe902f0 2706
ea3a6f44
NM
270722. Failure to deliver a bounce message always caused it to be frozen, even if
2708 there was an errors_to setting on the router. The errors_to setting is now
2709 respected.
bbe902f0
PH
2710
271123. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2712 canonical form (fully expanded) before being placed in
2713 $sender_host_address.
2714
271524. Updated eximstats to version 1.33
2716
ea3a6f44
NM
271725. Include certificate and key file names in error message when GnuTLS fails
2718 to set them up, because the GnuTLS error message doesn't include the name
2719 of the failing file when there is a problem reading it.
bbe902f0
PH
2720
272126. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2722 As per change 25.
bbe902f0 2723
ea3a6f44
NM
272427. Reset the locale to "C" after calling embedded Perl, in case it was changed
2725 (this can affect the format of dates).
bbe902f0 2726
ea3a6f44
NM
272728. exim_tidydb, when checking for the continued existence of a message for
2728 which it has found a message-specific retry record, was not finding
2729 messages that were in split spool directories. Consequently, it was
2730 deleting retry records that should have stayed in existence.
bbe902f0
PH
2731
273229. eximstats updated to version 1.35
2733 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2734 1.35 - bugfix such that pie charts by volume are generated correctly
2735
ea3a6f44
NM
273630. The SPA authentication driver was not abandoning authentication and moving
2737 on to the next authenticator when an expansion was forced to fail,
2738 contradicting the general specification for all authenticators. Instead it
2739 was generating a temporary error. It now behaves as specified.
bbe902f0 2740
ea3a6f44
NM
274131. The default ordering of permitted cipher suites for GnuTLS was pessimal
2742 (the order specifies the preference for clients). The order is now AES256,
2743 AES128, 3DES, ARCFOUR128.
bbe902f0 2744
ea3a6f44
NM
274531. Small patch to Sieve code - explicitly set From: when generating an
2746 autoreply.
bbe902f0 2747
ea3a6f44
NM
274832. Exim crashed if a remote delivery caused a very long error message to be
2749 recorded - for instance if somebody sent an entire SpamAssassin report back
2750 as a large number of 550 error lines. This bug was coincidentally fixed by
2751 increasing the size of one of Exim's internal buffers (big_buffer) that
2752 happened as part of the Exiscan merge. However, to be on the safe side, I
2753 have made the code more robust (and fixed the comments that describe what
2754 is going on).
bbe902f0 2755
ea3a6f44
NM
275633. Some experimental protocols are using DNS PTR records for new purposes. The
2757 keys for these records are domain names, not reversed IP addresses. The
2758 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2759 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2760 CAN-2005-0021
2761
ea3a6f44
NM
276234. The host_aton() function is supposed to be passed a string that is known
2763 to be a valid IP address. However, in the case of IPv6 addresses, it was
2764 not checking this. This is a hostage to fortune. Exim now panics and dies
2765 if the condition is not met. A case was found where this could be provoked
2766 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2767 components; fortuitously, this particular loophole had already been fixed
2768 by change 4.50/55 or 4.44/33 above.
2769
2770 If there are any other similar loopholes, the new check in host_aton()
2771 itself should stop them being exploited. The report I received stated that
2772 data on the command line could provoke the exploit when Exim was running as
2773 exim, but did not say which command line option was involved. All I could
2774 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2775 running as the user.
bbe902f0
PH
2776 CAN-2005-0021
2777
ea3a6f44
NM
277835. There was a buffer overflow vulnerability in the SPA authentication code
2779 (which came originally from the Samba project). I have added a test to the
2780 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2781 CAN-2005-0022
2782
ea3a6f44
NM
278336. The daemon start-up calls getloadavg() while still root for those OS that
2784 need the first call to be done as root, but it missed one case: when
2785 deliver_queue_load_max is set with deliver_drop_privilege. This is
2786 necessary for the benefit of the queue runner, because there is no re-exec
2787 when deliver_drop_privilege is set.
bbe902f0 2788
ea3a6f44
NM
278937. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2790 was in use, was not putting the data itself into the right store pool;
2791 consequently, it could be overwritten for a subsequent message in the same
2792 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2793 the caching.)
bbe902f0 2794
ea3a6f44
NM
279538. Sometimes the final signoff response after QUIT could fail to get
2796 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2797 < 0 before doing a fflush(). This bug looks as though it goes back to the
2798 introduction of TLS in release 3.20, but "sometimes" must have been rare
2799 because the tests only now provoked it.
bbe902f0
PH
2800
2801
495ae4b0
PH
2802Exim version 4.43
2803-----------------
2804
2805 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2806 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2807 Now it returns an integer. A number of calls were still expecting a T/F
2808 return. Fortuitously, in all cases, the tests worked in OK situations,
2809 which is the norm. However, things would have gone wrong on any write
2810 failures on the smtp file descriptor. This function is used when sending
2811 messages over SMTP and also when doing verify callouts.
2812
2813 2. When Exim is called to do synchronous delivery of a locally submitted
2814 message (the -odf or -odi options), it no longer closes stderr before doing
2815 the delivery.
2816
2817 3. Implemented the mua_wrapper option.
2818
2819 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2820
2821 5. Implemented the functions header_remove(), header_testname(),
2822 header_add_at_position(), and receive_remove_recipient(), and exported them
2823 to local_scan().
2824
2825 6. If an ACL "warn" statement specified the addition of headers, Exim already
2826 inserted X-ACL-Warn: at the start if there was no header name. However, it
2827 was not making this test for the second and subsequent header lines if
2828 there were newlines in the string. This meant that an invalid header could
2829 be inserted if Exim was badly configured.
2830
2831 7. Allow an ACL "warn" statement to add header lines at the start or after all
2832 the Received: headers, as well as at the end.
2833
2834 8. Added the rcpt_4xx retry error code.
2835
2836 9. Added postmaster_mailfrom=xxx to callout verification option.
2837
283810. Added mailfrom=xxxx to the callout verification option, for verify=
2839 header_sender only.
2840
284111. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2842 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2843
284412. Inserted some casts to stop certain compilers warning when using pointer
2845 differences as field lengths or precisions in printf-type calls (mostly
2846 affecting debugging statements).
2847
284813. Added optional readline() support for -be (dynamically loaded).
2849
285014. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2851 same clock tick as a message's arrival, so that its received time was the
2852 same as the "first fail" time on the retry record, and that message
2853 remained on the queue past the ultimate address timeout, every queue runner
2854 would try a delivery (because it was past the ultimate address timeout) but
2855 after another failure, the ultimate address timeout, which should have then
2856 bounced the address, did not kick in. This was a "< instead of <=" error;
2857 in most cases the first failure would have been in the next clock tick
2858 after the received time, and all would be well.
2859
286015. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2861 being recognized when the domain list was tested by the match_domain
2862 condition in an expansion string.
2863
286416. Added the ${str2b64: operator.
2865
286617. Exim was always calling setrlimit() to set a large limit for the number of
2867 processes, without checking whether the existing limit was already
2868 adequate. (It did check for the limit on file descriptors.) Furthermore,
2869 errors from getrlimit() and setrlimit() were being ignored. Now they are
2870 logged to the main and panic logs, but Exim does carry on, to try to do its
2871 job under whatever limits there are.
2872
287318. Imported PCRE 5.0.
2874
287519. Trivial typo in log message " temporarily refused connection" (the leading
2876 space).
2877
287820. If the log selector return_path_on_delivery was set and an address was
2879 redirected to /dev/null, the delivery process crashed because it assumed
2880 that a return path would always be set for a "successful" delivery. In this
2881 case, the whole delivery is bypassed as an optimization, and therefore no
2882 return path is set.
2883
288421. Internal re-arrangement: the function for sending a challenge and reading
2885 a response while authentication was assuming a zero-terminated challenge
2886 string. It's now changed to take a pointer and a length, to allow for
2887 binary data in such strings.
2888
288922. Added the cyrus_sasl authenticator (code supplied by MBM).
2890
289123. Exim was not respecting finduser_retries when seeking the login of the
2892 uid under which it was called; it was always trying 10 times. (The default
2893 setting of finduser_retries is zero.) Also, it was sleeping after the final
2894 failure, which is pointless.
2895
289624. Implemented tls_on_connect_ports.
2897
289825. Implemented acl_smtp_predata.
2899
290026. If the domain in control=submission is set empty, Exim assumes that the
2901 authenticated id is a complete email address when it generates From: or
2902 Sender: header lines.
2903
290427. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2905 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2906 chown and chgrp in /bin and hostname in /usr/bin.
2907
290828. Exim was keeping the "process log" file open after each use, just as it
2909 does for the main log. This opens the possibility of it remaining open for
2910 long periods when the USR1 signal hits a daemon. Occasional processlog
2911 errors were reported, that could have been caused by this. Anyway, it seems
2912 much more sensible not to leave this file open at all, so that is what now
2913 happens.
2914
291529. The long-running daemon process does not normally write to the log once it
2916 has entered its main loop, and it closes the log before doing so. This is
2917 so that log files can straightforwardly be renamed and moved. However,
2918 there are a couple of unusual error situations where the daemon does write
2919 log entries, and I had neglected to close the log afterwards.
2920
292130. The text of an SMTP error response that was received during a remote
2922 delivery was being truncated at 512 bytes. This is too short for some of
2923 the long messages that one sometimes sees. I've increased the limit to
2924 1024.
2925
292631. It is now possible to make retry rules that apply only when a message has a
2927 specific sender, in particular, an empty sender.
2928
292932. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2930 it possible to be selective about when SMTP synchronization is enforced.
2931
293233. Added "control = caseful_local_part" and "control = "caselower_local_part".
2933
293432. Implemented hosts_connection_nolog.
2935
293633. Added an ACL for QUIT.
2937
293834. Setting "delay_warning=" to disable warnings was not working; it gave a
2939 syntax error.
2940
294135. Added mailbox_size and mailbox_filecount to appendfile.
2942
294336. Added control = no_multiline_responses to ACLs.
2944
294537. There was a bug in the logic of the code that waits for the clock to tick
2946 in the case where the clock went backwards by a substantial amount such
2947 that the microsecond fraction of "now" was more than the microsecond
2948 fraction of "then" (but the whole seconds number was less).
2949
295038. Added support for the libradius Radius client library this is found on
2951 FreeBSD (previously only the radiusclient library was supported).
2952
2953
2954Exim version 4.42
2955-----------------
2956
2957 1. When certain lookups returned multiple values in the form name=value, the
2958 quoting of the values was not always being done properly. Specifically:
2959 (a) If the value started with a double quote, but contained no whitespace,
2960 it was not quoted.
2961 (b) If the value contained whitespace other than a space character (i.e.
2962 tabs or newlines or carriage returns) it was not quoted.
2963 This fix has been applied to the mysql and pgsql lookups by writing a
2964 separate quoting function and calling it from the lookup code. The fix
2965 should probably also be applied to nisplus, ibase and oracle lookups, but
2966 since I cannot test any of those, I have not disturbed their existing code.
2967
2968 2. A hit in the callout cache for a specific address caused a log line with no
2969 reason for rejecting RCPT. Now it says "Previous (cached) callout
2970 verification failure".
2971
2972 3. There was an off-by-one bug in the queryprogram router. An over-long
2973 return line was truncated at 256 instead of 255 characters, thereby
2974 overflowing its buffer with the terminating zero. As well as fixing this, I
2975 have increased the buffer size to 1024 (and made a note to document this).
2976
2977 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2978 when Exim is waiting for an SMTP response from a remote server, Exim
2979 restarts its select() call on the socket, thereby resetting its timeout.
2980 This is not a problem when such interrupts are rare. Somebody set up a cron
2981 job to run exiwhat every 2 minutes, which is less than the normal select()
2982 timeout (5 or 10 minutes). This meant that the select() timeout never
2983 kicked in because it was always reset. I have fixed this by comparing the
2984 time when an interrupt arrives with the time at the start of the first call
2985 to select(). If more time than the timeout has elapsed, the interrupt is
2986 treated as a timeout.
2987
2988 5. Some internal re-factoring in preparation for the addition of Sieve
2989 extensions (by MH). In particular, the "personal" test is moved to a
2990 separate function, and given an option for scanning Cc: and Bcc: (which is
2991 not set for Exim filters).
2992
2993 6. When Exim created an email address using the login of the caller as the
2994 local part (e.g. when creating a From: or Sender: header line), it was not
2995 quoting the local part when it contained special characters such as @.
2996
2997 7. Installed new OpenBSD configuration files.
2998
2999 8. Reworded some messages for syntax errors in "and" and "or" conditions to
3000 try to make them clearer.
3001
3002 9. Callout options, other than the timeout value, were being ignored when
3003 verifying sender addresses in header lines. For example, when using
3004
3005 verify = header_sender/callout=no_cache
3006
3007 the cache was (incorrectly) being used.
3008
300910. Added a missing instance of ${EXE} to the exim_install script; this affects
3010 only the Cygwin environment.
3011
301211. When return_path_on_delivery was set as a log selector, if different remote
3013 addresses in the same message used different return paths and parallel
3014 remote delivery occurred, the wrong values would sometimes be logged.
3015 (Whenever a remote delivery process finished, the return path value from
3016 the most recently started remote delivery process was logged.)
3017
301812. RFC 3848 specifies standard names for the "with" phrase in Received: header
3019 lines when AUTH and/or TLS are in use. This is the "received protocol"
3020 field. Exim used to use "asmtp" for authenticated SMTP, without any
3021 indication (in the protocol name) for TLS use. Now it follows the RFC and
3022 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3023 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3024 names appear in log lines as well as in Received: header lines.
3025
302613. Installed MH's patches for Sieve to add the "copy" and "vacation"
3027 extensions, and comparison tests, and to fix some bugs.
3028
302914. Changes to the "personal" filter test:
3030
3031 (1) The test was buggy in that it was just doing the equivalent of
3032 "contains" tests on header lines. For example, if a user's address was
3033 anne@some.where, the "personal" test would incorrectly be true for
3034
3035 To: susanne@some.where
3036
3037 This test is now done by extracting each address from the header in turn,
3038 and checking the entire address. Other tests that are part of "personal"
3039 are now done using regular expressions (for example, to check local parts
3040 of addresses in From: header lines).
3041
3042 (2) The list of non-personal local parts in From: addresses has been
3043 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3044 taken from the Sieve specification recommendations.
3045
3046 (3) If the message contains any header line starting with "List-" it is
3047 treated as non-personal.
3048
3049 (4) The test for "circular" in the Subject: header line has been removed
3050 because it now seems ill-conceived.
3051
305215. Minor typos in src/EDITME comments corrected.
3053
305416. Installed latest exipick from John Jetmore.
3055
305617. If headers_add on a router specified a text string that was too long for
3057 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3058 of string_sprintf() is now avoided.
3059
306018. $message_body_size was not set (it was always zero) when running the DATA
3061 ACL and the local_scan() function.
3062
306319. For the "mail" command in an Exim filter, no default was being set for
3064 the once_repeat time, causing a random time value to be used if "once" was
3065 specified. (If the value happened to be <= 0, no repeat happened.) The
3066 default is now 0s, meaning "never repeat". The "vacation" command was OK
3067 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3068 (I found it when inspecting the code).
3069
307020. There is now an overall timeout for performing a callout verification. It
3071 defaults to 4 times the callout timeout, which applies to individual SMTP
3072 commands during the callout. The overall timeout applies when there is more
3073 than one host that can be tried. The timeout is checked before trying the
3074 next host. This prevents very long delays if there are a large number of
3075 hosts and all are timing out (e.g. when the network connections are timing
3076 out). The value of the overall timeout can be changed by specifying an
3077 additional sub-option for "callout", called "maxwait". For example:
3078
3079 verify = sender/callout=5s,maxwait=20s
3080
308121. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3082 to the end before writing, but this should make it even safer).
3083
308422. Exim was forgetting that it had advertised PIPELINING for the second and
3085 subsequent messages on an SMTP connection. It was also not resetting its
3086 memory on STARTTLS and an internal HELO.
3087
308823. When Exim logs an SMTP synchronization error within a session, it now
3089 records whether PIPELINING has been advertised or not.
3090
309124. Added 3 instances of "(long int)" casts to time_t variables that were being
3092 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3093 rather than long int.
3094
309525. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3096
309726. Added the never_mail option to autoreply.
3098
3099
3100Exim version 4.41
3101-----------------
3102
3103 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3104 crash if the getsockname() call failed; this can happen if a connection is
3105 closed very soon after it is established. The problem was simply in the
3106 order in which certain operations were done, causing Exim to try to write
3107 to the SMTP stream before it had set up the file descriptor. The bug has
3108 been fixed by making things happen in the correct order.
3109
3110
3111Exim version 4.40
3112-----------------
3113
3114 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3115 before the connection was closed, thus losing the rejection response.
3116
3117 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3118 some early Solaris releases, but causes trouble in current releases where
3119 socklen_t is defined.
3120
3121 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3122 always exist.
3123
3124 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3125 configured.
3126
3127 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3128 that releasing the top of it at the end releases what was used for sub-
3129 expansions (unless the block got too big). However, discard this block if
3130 the first thing is a variable or header, so that we can use its block when
3131 it is dynamic (useful for very large $message_headers, for example).
3132
3133 6. Lookups now cache *every* query, not just the most recent. A new, separate
3134 store pool is used for this. It can be recovered when all lookup caches are
3135 flushed. Lookups now release memory at the end of their result strings.
3136 This has involved some general refactoring of the lookup sources.
3137
3138 7. Some code has been added to the store_xxx() functions to reduce the amount
3139 of flapping under certain conditions.
3140
3141 8. log_incoming_interface used to affect only the <= reception log lines. Now
3142 it causes the local interface and port to be added to several more SMTP log
3143 lines, for example "SMTP connection from", and rejection lines.
3144
3145 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3146
314710. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3148
314911. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3150 could be overwritten at the end of the current message (or the start of a
3151 new message if it was set in a HELO ACL). The value is now preserved for
3152 the duration of the SMTP connection.
3153
315412. If a transport had a headers_rewrite setting, and a matching header line
3155 contained an unqualified address, that address was qualified, even if it
3156 did not match any rewriting rules. The underlying bug was that the values
3157 of the flags that permit the existence of unqualified sender and recipient
3158 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3159 non-local messages, and by -bnq for local messages) were not being
3160 preserved with the message after it was received.
3161
316213. When Exim was logging an SMTP synchronization error, it could sometimes log
3163 "next input=" as part of the text comprising the host identity instead of
3164 the correct text. The code was using the same buffer for two different
3165 strings. However, depending on which order the printing function evaluated
3166 its arguments, the bug did not always show up. Under Linux, for example, my
3167 test suite worked just fine.
3168
316914. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3170 doesn't work with some older versions of Perl. It has been changed to "my",
3171 which in any case is probably the better facility to use.
3172
317315. A really picky compiler found some instances of statements for creating
3174 error messages that either had too many or two few arguments for the format
3175 string.
3176
317716. The size of the buffer for calls to the DNS resolver has been increased
3178 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3179 for addresses that have a lot of PTR records. This alleviates a problem; it
3180 does not fully solve it.
3181
318217. A dnsdb lookup for PTR records that receives more data than will fit in the
3183 buffer now truncates the list and logs the incident, which is the same
3184 action as happens when Exim is looking up a host name and its aliases.
3185 Previously in this situation something unpredictable would happen;
3186 sometimes it was "internal error: store_reset failed".
3187
318818. If a server dropped the connection unexpectedly when an Exim client was
3189 using GnuTLS and trying to read a response, the client delivery process
3190 crashed while trying to generate an error log message.
3191
319219. If a "warn" verb in an ACL added multiple headers to a message in a single
3193 string, for example:
3194
3195 warn message = H1: something\nH2: something
3196
3197 the text was added as a single header line from Exim's point of view
3198 though it ended up OK in the delivered message. However, searching for the
3199 second and subsequent header lines using $h_h2: did not work. This has been
3200 fixed. Similarly, if a system filter added multiple headers in this way,
3201 the routers could not see them.
3202
320320. Expanded the error message when iplsearch is called with an invalid key to
3204 suggest using net-iplsearch in a host list.
3205
320621. When running tests using -bh, any delays imposed by "delay" modifiers in
3207 ACLs are no longer actually imposed (and a message to that effect is
3208 output).
3209
321022. If a "gecos" field in a passwd entry contained escaped characters, in
3211 particular, if it contained a \" sequence, Exim got it wrong when building
3212 a From: or a Sender: header from that name. A second bug also caused
3213 incorrect handling when an unquoted " was present following a character
3214 that needed quoting.
3215
321623. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3217 was not being matched caselessly.
3218
321924. Arranged for all hyphens in the exim.8 source to be escaped with
3220 backslashes.
3221
322225. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3223 properly. Recipient callout cache records were still being keyed to include
3224 the sender, even when use_sender was set false. This led to far more
3225 callouts that were necessary. The sender is no longer included in the key
3226 when use_sender is false.
3227
322826. Added "control = submission" modifier to ACLs.
3229
323027. Added the ${base62d: operator to decode base 62 numbers.
3231
323228. dnsdb lookups can now access SRV records.
3233
323429. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3235 the configuration file.
3236
323730. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3238 (-v) mode. This makes the output for a verbose queue run more intelligible.
3239
324031. Added a use_postmaster feature to recipient callouts.
3241
324232. Added the $body_zerocount variable, containing the number of binary zero
3243 bytes in the message body.
3244
324533. The time of last modification of the "new" subdirectory is now used as the
3246 "mailbox time last read" when there is a quota error for a maildir
3247 delivery.
3248
324934. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3250
325135. Added +ignore_unknown as a special item in host lists.
3252
325336. Code for decoding IPv6 addresses in host lists is now included, even if
3254 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3255 address was recognized as an IP address, but was then not correctly decoded
3256 into binary, causing unexpected and incorrect effects when compared with
3257 another IP address.
3258
3259
3260Exim version 4.34
3261-----------------
3262
3263 1. Very minor rewording of debugging text in manualroute to say "list of
3264 hosts" instead of "hostlist".
3265
3266 2. If verify=header_syntax was set, and a header line with an unqualified
3267 address (no domain) and a large number of spaces between the end of the
3268 name and the colon was received, the reception process suffered a buffer
3269 overflow, and (when I tested it) crashed. This was caused by some obsolete
3270 code that should have been removed. The fix is to remove it!
3271
3272 3. When running in the test harness, delay a bit after writing a bounce
3273 message to get a bit more predictability in the log output.
3274
3275 4. Added a call to search_tidyup() just before forking a reception process. In
3276 theory, someone could use a lookup in the expansion of smtp_accept_max_
3277 per_host which, without the tidyup, could leave open a database connection.
3278
3279 5. Added the variables $recipient_data and $sender_data which get set from a
3280 lookup success in an ACL "recipients" or "senders" condition, or a router
3281 "senders" option, similar to $domain_data and $local_part_data.
3282
3283 6. Moved the writing of debug_print from before to after the "senders" test
3284 for routers.
3285
3286 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3287 problems for message scanning, either using a data ACL, or using
3288 local_scan() because the Received: header was not generated till after they
3289 were called (in order to set the time as the time of reception completion).
3290 I have revised the way this works. The header is now generated after the
3291 body is received, but before the ACL or local_scan() are called. After they
3292 are run, the timestamp in the header is updated.
3293
3294
3295Exim version 4.33
3296-----------------
3297
3298 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3299 before starting a queue runner without re-exec. This happened only when
3300 deliver_drop_privilege was set or when the Exim user was set to root. The
3301 effect of the bug was that timeouts during subsequent deliveries caused
3302 crashes instead of being properly handled. The handler is now left at its
3303 default (and expected) setting.
3304
3305 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3306 message, again when deliver_drop_privilege is set or Exim is run as root.
3307 The bug described in (1) was not present in this case, but the tidying up
3308 of the other signals was missing. I have made the two cases consistent.
3309
3310 3. The ignore_target_hosts setting on a manualroute router was being ignored
3311 for hosts that were looked up using the /MX notation.
3312
3313 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3314 in domain lists.
3315
3316 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3317 operated on the sender address. After changing the $sender_address to <>
3318 for the sender address verify, Exim was re-instated it as the original
3319 (before rewriting) address, but remembering that it had rewritten it, so it
3320 wasn't rewriting it again. This bug also had the effect of breaking the
3321 sender address verification caching when the sender address was rewritten.
3322
3323 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3324 This has been changed so that if the ip literal address matches
3325 ignore_target_hosts, the router declines.
3326
3327 7. Added expansion conditions match_domain, match_address, and match_local_
3328 part (NOT match_host).
3329
3330 8. The placeholder for the Received: header didn't have a length field set.
3331
3332 9. Added code to Exim itself and to exim_lock to test for a specific race
3333 condition that could lead to file corruption when using MBX delivery. The
3334 issue is with the lockfile that is created in /tmp. If this file is removed
3335 after a process has opened it but before that process has acquired a lock,
3336 there is the potential for a second process to recreate the file and also
3337 acquire a lock. This could lead to two Exim processes writing to the file
3338 at the same time. The added code performs the same test as UW imapd; it
3339 checks after acquiring the lock that its file descriptor still refers to
3340 the same named file.
3341
334210. The buffer for building added header lines was of fixed size, 8192 bytes.
3343 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3344 when Exim is built.
3345
334611. Added the smtp_active_hostname option. If used, this will typically be made
3347 to depend on the incoming interface address. Because $interface_address is
3348 not set up until the daemon has forked a reception process, error responses
3349 that can happen earlier (such as "too many connections") no longer contain
3350 a host name.
3351
335212. If an expansion in a condition on a "warn" statement fails because a lookup
3353 defers, the "warn" statement is abandoned, and the next ACL statement is
3354 processed. Previously this caused the whole ACL to be aborted.
3355
335613. Added the iplsearch lookup type.
3357
335814. Added ident_timeout as a log selector.
3359
336015. Added tls_certificate_verified as a log selector.
3361
336216. Added a global option tls_require_ciphers (compare the smtp transport
3363 option of the same name). This controls incoming TLS connections.
3364
336517. I finally figured out how to make tls_require_ciphers do a similar thing
3366 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3367 before starting the TLS session.
3368
336918. Tabs are now shown as \t in -bP output.
3370
337119. If the log selector return_path_on_delivery was set, Exim crashed when
3372 bouncing a message because it had too many Received: header lines.
3373
337420. If two routers both had headers_remove settings, and the first one included
3375 a superfluous trailing colon, the final name in the first list and the
3376 first name in the second list were incorrectly joined into one item (with a
3377 colon in the middle).
3378
3379
3380Exim version 4.32
3381-----------------
3382
3383 1. Added -C and -D options to the exinext utility, mainly to make it easier
3384 to include in the automated testing, but these could be helpful when
3385 multiple configurations are in use.
3386
3387 2. The exinext utility was not formatting the output nicely when there was
3388 an alternate port involved in the retry record key, nor when there was a
3389 message id as well (for retries that were specific to a specific message
3390 and a specific host). It was also confused by IPv6 addresses, because of
3391 the additional colons they contain. I have fixed the IPv4 problem, and
3392 patched it up to do a reasonable job for IPv6.
3393
3394 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3395 delivery, the log line now contains "pipelined" if PIPELINING was used.
3396
3397 4. An SMTP transport process used to panic and die if the bind() call to set
3398 an explicit outgoing interface failed. This has been changed; it is now
3399 treated in the same way as a connect() failure.
3400
3401 5. A reference to $sender_host_name in the part of a conditional expansion
3402 that was being skipped was still causing a DNS lookup. This no longer
3403 occurs.
3404
3405 6. The def: expansion condition was not recognizing references to header lines
3406 that used bh_ and bheader_.
3407
3408 7. Added the _cache feature to named lists.
3409
3410 8. The code for checking quota_filecount in the appendfile transport was
3411 allowing one more file than it should have been.
3412
3413 9. For compatibility with Sendmail, the command line option
3414
3415 -prval:sval
3416
3417 is equivalent to
3418
3419 -oMr rval -oMs sval
3420
3421 and sets the incoming protocol and host name (for trusted callers). The
3422 host name and its colon can be omitted when only the protocol is to be set.
3423 Note the Exim already has two private options, -pd and -ps, that refer to
3424 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3425 "s", but I don't think that's a major issue.
3426
342710. A number of refactoring changes to the code, none of which should affect
3428 Exim's behaviour:
3429
3430 (a) The number of logging options was getting close to filling up the
3431 32-bit word that was used as a bit map. I have split them into two classes:
3432 those that are passed in the argument to log_write(), and those that are
3433 only ever tested independently outside of that function. These are now in
3434 separate 32-bit words, so there is plenty of room for expansion again.
3435 There is no change in the user interface or the logging behaviour.
3436
3437 (b) When building, for example, log lines, the code previously used a
3438 macro that called string_cat() twice, in order to add two strings. This is
3439 not really sufficiently general. Furthermore, there was one instance where
3440 it was actually wrong because one of the argument was used twice, and in
3441 one call a function was used. (As it happened, calling the function twice
3442 did not affect the overall behaviour.) The macro has been replaced by a
3443 function that can join an arbitrary number of extra strings onto a growing
3444 string.
3445
3446 (c) The code for expansion conditions now uses a table and a binary chop
3447 instead of a serial search (which was left over from when there were very
3448 few conditions). Also, it now recognizes conditions like "pam" even when
3449 the relevant support is not compiled in: a suitably worded error message is
3450 given if an attempt is made to use such a condition.
3451
345211. Added ${time_interval:xxxxx}.
3453
345412. A bug was causing one of the ddress fields not to be passed back correctly
3455 from remote delivery subprocesses. The field in question was not being
3456 subsequently used, so this caused to problems in practice.
3457
345813. Added new log selectors queue_time and deliver_time.
3459
346014. Might have fixed a bug in maildirsizefile handling that threw up
3461 "unexpected character" debug warnings, and recalculated the data
3462 unnecessarily. In any case, I expanded the warning message to give more
3463 information.
3464
346515. Added the message "Restricted characters in address" to the statements in
3466 the default ACL that block characters like @ and % in local parts.
3467
346816. Change 71 for release 4.31 proved to be much less benign that I imagined.
3469 Three changes have been made:
3470
3471 (a) There was a serious bug; a negative response to MAIL caused the whole
3472 recipient domain to be cached as invalid, thereby blocking all messages
3473 to all local parts at the same domain, from all senders. This bug has
3474 been fixed. The domain is no longer cached after a negative response to
3475 MAIL if the sender used is not empty.
3476
3477 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3478 been restored.
3479
3480 (c) A new callout option, "use_sender" has been added for people who want
3481 the modified behaviour.
3482
3483
3484Exim version 4.31
3485-----------------
3486
3487 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3488 Larry Rosenman.
3489
3490 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3491 indeed breaks things for older releases.
3492
3493 3. Added additional logging to the case where there is a problem reading data
3494 from a filter that is running in a subprocess using a pipe, in order to
3495 try to track down a specific problem.
3496
3497 4. Testing facility fudge: when running in the test harness and attempting
3498 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3499 getting "No route to host". Convert this to a timeout.
3500
3501 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3502 warning.
3503
3504 6. Some OS don't have socklen_t but use size_t instead. This affects the
3505 fifth argument of getsockopt() amongst other things. This is now
3506 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3507 can be set for individual OS. I have set it for SunOS5, OSF1, and
3508 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3509 some earlier ones do not.
3510
3511 7. Change 4.30/15 was not doing the test caselessly.
3512
3513 8. The standard form for an IPv6 address literal was being rejected by address
3514 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3515 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3516 this, as well as the form without the "IPv6" on the front (but only when
3517 address literals are enabled, of course).
3518
3519 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3520
352110. Exim crashed if a message with an empty sender address specified by -f
3522 encountered a router with an errors_to setting. This could be provoked only
3523 by a command such as
3524
3525 exim -f "" ...
3526
3527 where an empty string was supplied; "<>" did not hit this bug.
3528
352911. Installed PCRE release 4.5.
3530
353112. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3532 remained set. It is now erased.
3533
353413. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3535 times from message ids (which are base 36 rather than the normal 62).
3536
353714. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3538 were being counted as actual protocol errors, and logged if the log
3539 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3540 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3541 and DATA following a set of rejected RCPTs do not count as protocol errors.
3542 In other words, Exim assumes they were pipelined, though this may not
3543 actually be the case. Of course, in all cases the client gets an
3544 appropriate error code.
3545
354615. If a lookup fails in an ACL condition, a message about the failure may
3547 be available; it is used if testing the ACL cannot continue, because most
3548 such messages specify what the cause of the deferral is. However, some
3549 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3550 that caused an old message to be retained and used if a later statement
3551 caused a defer, replacing the real cause of the deferral.
3552
355316. If an IP address had so many PTR records that the DNS lookup buffer
3554 was not large enough to hold them, Exim could crash while trying to process