Escape funny characters when logging DN=
[exim.git] / doc / doc-txt / ChangeLog
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48ed62d9 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.525 2007/08/22 14:20:28 ph10 Exp $
495ae4b0
PH
2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
eb4c0de6
PH
6Exim version 4.68
7-----------------
8
9PH/01 Another patch from the Sieve maintainer.
10
6a3bceb1
PH
11PH/02 When an IPv6 address is converted to a string for single-key lookup
12 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
13 dots are used instead of colons so that keys in lsearch files need not
14 contain colons. This was done some time before quoting was made available
15 in lsearch files. However, iplsearch files do require colons in IPv6 keys
16 (notated using the quote facility) so as to distinguish them from IPv4
17 keys. This meant that lookups for IP addresses in host lists did not work
18 for iplsearch lookups.
19
20 This has been fixed by arranging for IPv6 addresses to be expressed with
21 colons if the lookup type is iplsearch. This is not incompatible, because
22 previously such lookups could never work.
23
24 The situation is now rather anomolous, since one *can* have colons in
25 ordinary lsearch keys. However, making the change in all cases is
26 incompatible and would probably break a number of configurations.
27
2e30fa9d
TK
28TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
29 version.
30
0806a9c5
MH
31MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
32 conversion specification without a maximum field width, thereby enabling
33 a rogue spamd server to cause a buffer overflow. While nobody in their
34 right mind would setup Exim to query an untrusted spamd server, an
35 attacker that gains access to a server running spamd could potentially
36 exploit this vulnerability to run arbitrary code as the Exim user.
37
ae276964
TK
38TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
39 $primary_hostname instead of what libspf2 thinks the hosts name is.
40
0f2cbd1b
MH
41MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
42 a directory entry by the name of the lookup key. Previously, if a
43 symlink pointed to a non-existing file or a file in a directory that
44 Exim lacked permissions to read, a lookup for a key matching that
45 symlink would fail. Now it is enough that a matching directory entry
46 exists, symlink or not. (Bugzilla 503.)
47
2b85bce7
PH
48PH/03 The body_linecount and body_zerocount variables are now exported in the
49 local_scan API.
50
93655c46
PH
51PH/04 Added the $dnslist_matched variable.
52
6c512171
PH
53PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
54 This means they are set thereafter only if the connection becomes
55 encrypted.
56
57PH/06 Added the client_condition to authenticators so that some can be skipped
58 by clients under certain conditions.
59
aa6dc513
PH
60PH/07 The error message for a badly-placed control=no_multiline_responses left
61 "_responses" off the end of the name.
62
a96603a0
PH
63PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
64
8f240103
PH
65PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
66 (without spaces) instead of just copying the configuration text.
67
68PH/10 Added the /noupdate option to the ratelimit ACL condition.
69
d677b2f2
PH
70PH/11 Added $max_received_linelength.
71
d52120f2
PH
72PH/12 Added +ignore_defer and +include_defer to host lists.
73
64f2600a
PH
74PH/13 Installed PCRE version 7.2. This needed some changes because of the new
75 way in which PCRE > 7.0 is built.
76
8669f003
PH
77PH/14 Implemented queue_only_load_latch.
78
a4dc33a8
PH
79PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
80 MAIL command. The effect was to mangle the value on 64-bit systems.
81
d6a60c0f
PH
82PH/16 Another patch from the Sieve maintainer.
83
8f128379
PH
84PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
85
8932dffe
PH
86PH/18 If a system quota error occurred while trying to create the file for
87 a maildir delivery, the message "Mailbox is full" was not appended to the
88 bounce if the delivery eventually timed out. Change 4.67/27 below applied
89 only to a quota excession during the actual writing of the file.
d6a60c0f 90
48ed62d9
PH
91PH/10 It seems that peer DN values may contain newlines (and other non-printing
92 characters?) which causes problems in log lines. The DN values are now
93 passed through string_printing() before being added to log lines.
94
eb4c0de6 95
b4ed4da0
PH
96Exim version 4.67
97-----------------
98
22ad45c9
MH
99MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
100 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
101 Jan Srzednicki.
102
b4ed4da0
PH
103PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
104 issue a MAIL command.
105
431b7361
PH
106PH/02 In an ACL statement such as
107
108 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
109
110 if a client was not listed at all, or was listed with a value other than
111 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
112 the condition was not true (as it should be), so access was not denied.
113 The bug was that the ! inversion was incorrectly passed on to the second
114 item. This has been fixed.
115
116PH/03 Added additional dnslists conditions == and =& which are different from
117 = and & when the dns lookup returns more than one IP address.
118
83da1223
PH
119PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
120 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
121
54fc8428
PH
122PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
123 FSYNC, which compiles an option called disable_fsync that allows for
124 bypassing fsync(). The documentation is heavily laced with warnings.
125
34c5e8dd
SC
126SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
127
bbe15da8
PH
128PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
129 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
130 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
131 including adding "make clean"; (3) Added -fPIC when compiling the test
132 dynamically loaded module, to get rid of a warning.
133
0e8a9471
MH
134MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
135 message fails, move_frozen_messages = true and ignore_bounce_errors_after
136 = 0s. The bug is otherwise harmless.
137
f0872424
PH
138PH/07 There was a bug in the dovecot authenticator such that the value of
139 $auth1 could be overwritten, and so not correctly preserved, after a
140 successful authentication. This usually meant that the value preserved by
141 the server_setid option was incorrect.
142
b01dd148
PH
143PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
144
6bf342e1
PH
145PH/09 Installed PCRE release 7.0.
146
273f34d0
PH
147PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
148 run for batched SMTP input. It is now run at the start of every message
149 in the batch. While fixing this I discovered that the process information
150 (output by running exiwhat) was not always getting set for -bs and -bS
151 input. This is fixed, and it now also says "batched" for BSMTP.
152
cf8b11a5
PH
153PH/11 Added control=no_pipelining.
154
41c7c167
PH
155PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
156 patch, slightly modified), and move the expansion of helo_data till after
157 the connection is made in the smtp transport (so it can use these
158 values).
159
9c57cbc0
PH
160PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
161
f3f065bb
PH
162PH/14 Added log_selector = +pid.
163
047bdd8c
PH
164PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
165
0ce9abe6
PH
166PH/16 Add ${if forany and ${if forall.
167
0e22dfd1
PH
168PH/17 Added dsn_from option to vary the From: line in DSNs.
169
4c590bd1
PH
170PH/18 Flush SMTP output before performing a callout, unless control =
171 no_callout_flush is set.
172
09945f1e
PH
173PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
174 was true (the default) a successful delivery failed to delete the retry
175 item, thus causing premature timeout of the address. The bug is now
176 fixed.
177
c51b8e75
PH
178PH/20 Added hosts_avoid_pipelining to the smtp transport.
179
e28326d8
PH
180PH/21 Long custom messages for fakedefer and fakereject are now split up
181 into multiline reponses in the same way that messages for "deny" and
182 other ACL rejections are.
183
75b1493f
PH
184PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
185 with slight modification.
186
7c5214ec
PH
187PH/23 Applied sieve patches from the maintainer "tracking the latest notify
188 draft, changing the syntax and factoring some duplicate code".
189
4311097e
PH
190PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
191 for deliveries of the second and subsequent messages over the same SMTP
192 connection.
193
29f89cad
PH
194PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
195 ${reduce, with only minor "tidies".
196
5e687460
SC
197SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
198
c3611384
PH
199PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
200 expansion side effects.
201
5a11a7b4
PH
202PH/27 When a message times out after an over-quota error from an Exim-imposed
203 quota, the bounce message says "mailbox is full". This message was not
204 being given when it was a system quota that was exceeded. It now should
205 be the same.
206
0e20aff9
MH
207MH/03 Made $recipients available in local_scan(). local_scan() already has
208 better access to the recipient list through recipients_list[], but
209 $recipients can be useful in postmaster-provided expansion strings.
210
ca86f471
PH
211PH/28 The $smtp_command and $smtp_command_argument variables were not correct
212 in the case of a MAIL command with additional options following the
213 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
214 were accidentally chopped off.
215
a14e5636
PH
216PH/29 SMTP synchronization checks are implemented when a command is read -
217 there is a check that no more input is waiting when there shouldn't be
218 any. However, for some commands, a delay in an ACL can mean that it is
219 some time before the response is written. In this time, more input might
220 arrive, invalidly. So now there are extra checks after an ACL has run for
221 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
222 pipelining has not been advertised.
223
ec95d1a6
PH
224PH/30 MH's patch to allow iscntrl() characters to be list separators.
225
42855d71
PH
226PH/31 Unlike :fail:, a custom message specified with :defer: was not being
227 returned in the SMTP response when smtp_return_error_details was false.
228 This has been fixed.
229
57c2c631
PH
230PH/32 Change the Dovecot authenticator to use read() and write() on the socket
231 instead of the C I/O that was originally supplied, because problems were
232 reported on Solaris.
233
58c01c94
PH
234PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
235 Exim which did not show up earlier: it was assuming that a call to
236 SSL_CTX_set_info_callback() might give an error value. In fact, there is
237 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
238 was a macro that became an assignment, so it seemed to work. This has
239 changed to a proper function call with a void return, hence the compile
240 error. Exim's code has been fixed.
241
dee5a20a
PH
242PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
243 cpus.
244
d2ee6114
PH
245PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
246
b2d5182b
PH
247PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
248
79749a79
PH
249PH/37 If a message is not accepted after it has had an id assigned (e.g.
250 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
251 "Completed" line in the log. When some messages of this type were
252 selected by exigrep, they were listed as "not completed". Others were
253 picked up by some special patterns. I have improved the selection
254 criteria to be more general.
79749a79 255
c456d9bb
PH
256PH/38 The host_find_failed option in the manualroute router can now be set
257 to "ignore", to completely ignore a host whose IP address cannot be
258 found. If all hosts are ignored, the behaviour is controlled by the new
259 host_all_ignored option.
260
cd9868ec
PH
261PH/39 In a list of hosts for manualroute, if one item (either because of multi-
262 homing or because of multiple MX records with /mx) generated more than
263 one IP address, and the following item turned out to be the local host,
264 all the secondary addresses of the first item were incorrectly removed
265 from the list, along with the local host and any following hosts (which
266 is what is supposed to happen).
267
ebeaf996
PH
268PH/40 When Exim receives a message, it writes the login name, uid, and gid of
269 whoever called Exim into the -H file. In the case of the daemon it was
270 behaving confusingly. When first started, it used values for whoever
271 started the daemon, but after a SIGHUP it used the Exim user (because it
272 calls itself on a restart). I have changed the code so that it now always
273 uses the Exim user.
274
2679d413
PH
275PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
276 message are rejected with the same error (e.g. no authentication or bad
277 sender address), and a DATA command is nevertheless sent (as can happen
278 with PIPELINING or a stupid MUA), the error message that was given to the
279 RCPT commands is included in the rejection of the DATA command. This is
280 intended to be helpful for MUAs that show only the final error to their
281 users.
282
84024b72
PH
283PH/42 Another patch from the Sieve maintainer.
284
8005d38e
SC
285SC/02 Eximstats - Differentiate between permanent and temporary rejects.
286 Eximstats - Fixed some broken HTML links and added missing column headers
287 (Jez Hancock).
288 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
289 columns for Rejects, Temp Rejects, Ham, and Spam rows.
290
3298c6c6
SC
291SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
292
a43a27c5
PH
293PH/43 Yet another patch from the Sieve maintainer.
294
58eb016e 295PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
296 the response to the final '.' that terminates a message, but only in the
297 case where the client has not sent further data following the '.'
298 (unfortunately, this is allowed). However, in many cases there won't be
299 any further data because there won't be any more messages to send. A call
300 to select() can be used: if it shows that the input is "ready", there is
301 either input waiting, or the socket has been closed. An attempt to read
302 the next input character can distinguish the two cases. Previously, Exim
58eb016e 303 would have sent an OK response which the client would never have see.
563b63fa
PH
304 This could lead to message repetition. This fix should cure that, at
305 least in a lot of common cases.
58eb016e 306
b43a74ea
PH
307PH/45 Do not advertise STARTTLS in response to HELP unless it would be
308 advertised in response to EHLO.
309
b4ed4da0 310
5dd1517f
PH
311Exim version 4.66
312-----------------
313
314PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
315 fixed by 4.65/MH/01 (is this a record?) are fixed:
316
317 (i) An empty string was always treated as zero by the numeric comparison
318 operators. This behaviour has been restored.
319
320 (ii) It is documented that the numeric comparison operators always treat
321 their arguments as decimal numbers. This was broken in that numbers
322 starting with 0 were being interpreted as octal.
323
324 While fixing these problems I realized that there was another issue that
325 hadn't been noticed. Values of message_size_limit (both the global option
326 and the transport option) were treated as octal if they started with 0.
327 The documentation was vague. These values are now always treated as
328 decimal, and I will make that clear in the documentation.
329
330
93cfa765
TK
331Exim version 4.65
332-----------------
333
334TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
335 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
336 versions. (#438)
337
d6066548
MH
338MH/01 Don't check that the operands of numeric comparison operators are
339 integers when their expansion is in "skipping" mode (fixes bug
340 introduced by 4.64-PH/07).
341
4362ff0d
PH
342PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
343 child addresses, Exim now panics and dies. Previously, because the count
344 is held in a short int, deliveries were likely to be lost. As such a
345 large number of recipients for a single message is ridiculous
346 (performance will be very, very poor), I have chosen to impose a limit
347 rather than extend the field.
348
93cfa765 349
944e9e9c
TF
350Exim version 4.64
351-----------------
aa41d2de 352
21d74bd9
TK
353TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
354 leftover -K file (the existence of which was triggered by #402).
355 While we were at it, introduced process PID as part of the -K
356 filename. This should rule out race conditions when creating
357 these files.
358
359TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
360 processing considerably. Previous code took too long for large mails,
361 triggering a timeout which in turn triggers #401.
362
363TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
364 in the DK code in transports.c. sendfile() is not really portable,
365 hence the _LINUX specificness.
944e9e9c
TF
366
367TF/01 In the add_headers option to the mail command in an Exim filter,
368 there was a bug that Exim would claim a syntax error in any
369 header after the first one which had an odd number of characters
370 in the field name.
371
2b1c6e3a
PH
372PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
373 callout verification, Exim cached a "reject" for the entire domain. This
374 is correct for most verifications, but it is not correct for a recipient
375 verification with use_sender or use_postmaster set, because in that case
376 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
377 case of MAIL FROM:<> rejection from other early rejections (e.g.
378 rejection of HELO). When verifying a recipient using a non-null MAIL
379 address, the cache is ignored if it shows MAIL FROM:<> rejection.
380 Whatever the result of the callout, the value of the domain cache is
381 left unchanged (for any other kind of callout, getting as far as trying
382 RCPT means that the domain itself is ok).
383
1f872c80
PH
384PH/02 Tidied a number of unused variable and signed/unsigned warnings that
385 gcc 4.1.1 threw up.
386
387PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
388 manifest itself as EPIPE rather than ECONNECT. When tidying away a
389 session, the daemon ignores ECONNECT errors and logs others; it now
390 ignores EPIPE as well.
391
d203e649
PH
392PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
393 (quoted-printable decoding).
394
cc2ed8f7 395PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 396 later the small subsequent patch to fix an introduced bug.
f951fd57 397
ddfcd446
PH
398PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
399
d45b1de8
PH
400PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
401
402PH/08 An error is now given if message_size_limit is specified negative.
403
38a0a95f 404PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 405 to be given (somewhat) arbitrary names.
38a0a95f 406
a2405d83
JJ
407JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
408 in 4.64-PH/09.
409
410JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
411 miscellaneous code fixes
412
6ea85e9a
PH
413PH/10 Added the log_reject_target ACL modifier to specify where to log
414 rejections.
415
26da7e20
PH
416PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
417 hostname. This is wrong, because it relates to the incoming message (and
418 probably the interface on which it is arriving) and not to the outgoing
419 callout (which could be using a different interface). This has been
420 changed to use the value of the helo_data option from the smtp transport
421 instead - this is what is used when a message is actually being sent. If
422 there is no remote transport (possible with a router that sets up host
423 addresses), $smtp_active_hostname is used.
6ea85e9a 424
14aa5a05 425PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 426 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
427 (a) The code assumed that strncpy() returns a negative number on buffer
428 overflow, which isn't the case. Replaced with Exim's string_format()
429 function.
430 (b) There were several signed/unsigned issues. I just did the minimum
431 hacking in of casts. There is scope for a larger refactoring.
432 (c) The code used strcasecmp() which is not a standard C function.
433 Replaced with Exim's strcmpic() function.
434 (d) The code set only $1; it now sets $auth1 as well.
435 (e) A simple test gave the error "authentication client didn't specify
436 service in request". It would seem that Dovecot has changed its
437 interface. Fortunately there's a specification; I followed it and
438 changed what the client sends and it appears to be working now.
439
ff75a1f7
PH
440PH/13 Added $message_headers_raw to provide the headers without RFC 2047
441 decoding.
442
e6f6568e
PH
443PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
444 address A is aliased to B and C, where B exists and C does not. Without
445 -v the output is "A verified" because verification stops after a
446 successful redirection if more than one address is generated. However,
447 with -v the child addresses are also verified. Exim was outputting "A
448 failed to verify" and then showing the successful verification for C,
449 with its parentage. It now outputs "B failed to verify", showing B's
450 parentage before showing the successful verification of C.
451
d6f6e0dc
PH
452PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
453 look up a TXT record in a specific list after matching in a combined
454 list.
455
322050c2
PH
456PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
457 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
458 they consult the DNS. I had assumed they would set it the way they
459 wanted; and indeed my experiments on Linux seem to show that in some
460 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
461 To be on the safe side, however, I have now made the interface to
462 host_find_byname() similar to host_find_bydns(), with an argument
463 containing the DNS resolver options. The host_find_byname() function now
464 sets these options at its start, just as host_find_bydns() does. The smtp
465 transport options dns_qualify_single and dns_search_parents are passed to
466 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
467 of host_find_byname() use the default settings of RES_DEFNAMES
468 (qualify_single) but not RES_DNSRCH (search_parents).
469
08955dd3
PH
470PH/17 Applied (a modified version of) Nico Erfurth's patch to make
471 spool_read_header() do less string testing, by means of a preliminary
472 switch on the second character of optional "-foo" lines. (This is
473 overdue, caused by the large number of possibilities that now exist.
474 Originally there were few.) While I was there, I also converted the
475 str(n)cmp tests so they don't re-test the leading "-" and the first
476 character, in the hope this might squeeze out yet more improvement.
477
1eccaa59
PH
478PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
479 flag allowing group syntax was set by the header_syntax check but not
480 turned off, possible causing trouble later; (2) The flag was not being
481 set at all for the header_verify test, causing "group"-style headers to
482 be rejected. I have now set it in this case, and also caused header_
483 verify to ignore an empty address taken from a group. While doing this, I
484 came across some other cases where the code for allowing group syntax
485 while scanning a header line wasn't quite right (mostly, not resetting
486 the flag correctly in the right place). These bugs could have caused
487 trouble for malformed header lines. I hope it is now all correct.
488
602e59e5
PH
489PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
490 with the "reply" argument non-NULL. The code, however (which originally
491 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
492 but it didn't always do it. This confused somebody who was copying the
493 code for some other use. I have removed all the tests.
494
411ef850
PH
495PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
496 feature that was used to support insecure browsers during the U.S. crypto
497 embargo. It requires special client support, and Exim is probably the
498 only MTA that supported it -- and would never use it because real RSA is
499 always available. This code has been removed, because it had the bad
500 effect of slowing Exim down by computing (never used) parameters for the
501 RSA_EXPORT functionality.
502
7befa435
PH
503PH/21 On the advice of Timo Sirainen, added a check to the dovecot
504 authenticator to fail if there's a tab character in the incoming data
505 (there should never be unless someone is messing about, as it's supposed
506 to be base64-encoded). Also added, on Timo's advice, the "secured" option
507 if the connection is using TLS or if the remote IP is the same as the
508 local IP, and the "valid-client-cert option" if a client certificate has
509 been verified.
510
48da4259 511PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
512 authenticators. This can be used for authorization after authentication
513 succeeds. (In the case of plaintext, it servers for both authentication
514 and authorization.)
515
48da4259
PH
516PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
517 if any retry times were supplied.
518
d1d5595c
PH
519PH/24 Exim crashed if verify=helo was activated during an incoming -bs
520 connection, where there is no client IP address to check. In this
521 situation, the verify now always succeeds.
522
0ef732d9
PH
523PH/25 Applied John Jetmore's -Mset patch.
524
328895cc
PH
525PH/26 Added -bem to be like -Mset, but loading a message from a file.
526
fd700877
PH
527PH/27 In a string expansion for a processed (not raw) header when multiple
528 headers of the same name were present, leading whitespace was being
529 removed from all of them, but trailing whitespace was being removed only
530 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
531 before concatenation. Completely empty headers in a concatenation (as
532 before) are ignored.
fd700877 533
8dce1a6f
PH
534PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
535 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
536
17af4a17
PH
537PH/29 [Removed. This was a change that I later backed out, and forgot to
538 correct the ChangeLog entry (that I had efficiently created) before
539 committing the later change.]
f6c332bd
PH
540
541PH/30 Exim was sometimes attempting to deliver messages that had suffered
542 address errors (4xx response to RCPT) over the same connection as other
543 messages routed to the same hosts. Such deliveries are always "forced",
544 so retry times are not inspected. This resulted in far too many retries
545 for the affected addresses. The effect occurred only when there were more
546 hosts than the hosts_max_try setting in the smtp transport when it had
547 the 4xx errors. Those hosts that it had tried were not added to the list
548 of hosts for which the message was waiting, so if all were tried, there
549 was no problem. Two fixes have been applied:
550
551 (i) If there are any address or message errors in an SMTP delivery, none
552 of the hosts (tried or untried) are now added to the list of hosts
553 for which the message is waiting, so the message should not be a
554 candidate for sending over the same connection that was used for a
555 successful delivery of some other message. This seems entirely
556 reasonable: after all the message is NOT "waiting for some host".
557 This is so "obvious" that I'm not sure why it wasn't done
558 previously. Hope I haven't missed anything, but it can't do any
559 harm, as the worst effect is to miss an optimization.
560
561 (ii) If, despite (i), such a delivery is accidentally attempted, the
562 routing retry time is respected, so at least it doesn't keep
563 hammering the server.
564
c1114884
PH
565PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
566 in ${readsocket because some servers need this prod.
567
7a0743eb
PH
568PH/32 Added some extra debug output when updating a wait-xxx database.
569
0d85fa3f
PH
570PH/33 The hint "could be header name not terminated by colon", which has been
571 given for certain expansion errors for a long time, was not being given
572 for the ${if def:h_colon_omitted{... case.
573
1bf43b78
PH
574PH/34 The spec says: "With one important exception, whenever a domain list is
575 being scanned, $domain contains the subject domain." There was at least
576 one case where this was not true.
577
520de300
PH
578PH/35 The error "getsockname() failed: connection reset by peer" was being
579 written to the panic log as well as the main log, but it isn't really
580 panic-worthy as it just means the connection died rather early on. I have
581 removed the panic log writing for the ECONNRESET error when getsockname()
582 fails.
583
48c7f9e2
PH
584PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
585 runs only) independently of the message's sender address. This meant
586 that, if the 4xx error was in fact related to the sender, a different
587 message to the same recipient with a different sender could confuse
588 things. In particualar, this can happen when sending to a greylisting
589 server, but other circumstances could also provoke similar problems.
590 I have changed the default so that the retry time for these errors is now
591 based a combination of the sender and recipient addresses. This change
592 can be overridden by setting address_retry_include_sender=false in the
593 smtp transport.
594
99ea1c86
PH
595PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
596 remote server are returned as part of bounce messages. This was not
597 happening for LMTP over a pipe (the lmtp transport), but now it is the
598 same for both kinds of LMTP.
599
a2042e78
PH
600PH/38 Despite being documented as not happening, Exim was rewriting addresses
601 in header lines that were in fact CNAMEs. This is no longer the case.
602
4fbcfc2e
PH
603PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
604 and queue runs started by the daemon processed all messages. This has
605 been fixed so that -R and -S can now usefully be given with -q<time>.
606
aa41d2de
PH
607PH/40 Import PCRE release 6.7 (fixes some bugs).
608
af561417
PH
609PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
610
3cc66b45
PH
611PH/42 Give an error if -q is specified more than once.
612
194cc0e4
PH
613PH/43 Renamed the variables $interface_address and $interface_port as
614 $received_ip_address and $received_port, to make it clear that these
615 values apply to message reception, and not to the outgoing interface when
616 a message is delivered. (The old names remain recognized, of course.)
617
a401ddaa
PH
618PH/44 There was no timeout on the connect() call when using a Unix domain
619 socket in the ${readsocket expansion. There now is.
620
4e88a19f
PH
621PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
622 be meaningful with "accept".
623
d7d7b289
SC
624SC/01 Eximstats V1.43
625 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
626
627SC/02 Eximstats V1.44
628 Use a glob alias rather than an array ref in the generated
629 parser. This improves both readability and performance.
630
631SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
632 Collect SpamAssassin and rejection statistics.
633 Don't display local sender or destination tables unless
634 there is data to show.
635 Added average volumes into the top table text output.
636
637SC/04 Eximstats V1.46
638 Collect data on the number of addresses (recipients)
639 as well as the number of messages.
640
641SC/05 Eximstats V1.47
642 Added 'Message too big' to the list of mail rejection
643 reasons (thanks to Marco Gaiarin).
644
645SC/06 Eximstats V1.48
646 Mainlog lines which have GMT offsets and are too short to
647 have a flag are now skipped.
648
649SC/07 Eximstats V1.49 (Alain Williams)
650 Added the -emptyok flag.
651
652SC/08 Eximstats V1.50
653 Fixes for obtaining the IP address from reject messages.
654
0ea2a468
JJ
655JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
656 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
657 whitesspace changes from 4.64-PH/27
658
659JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
660 match 4.64-PH/13
661
662JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
663 are found, allow negative numbers in numeric criteria)
664
665JJ/06 exipick.20061117.2, added new $message_body_missing variable
666
667JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
668 to match changes made in 4.64-PH/43
669
8a10f5a4
PH
670PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
671
30e18802
PH
672PH/47 Put in an explicit test for a DNS lookup of an address record where the
673 "domain" is actually an IP address, and force a failure. This locks out
674 those revolvers/nameservers that support "A-for-A" lookups, in
675 contravention of the specifications.
676
55728a4f
PH
677PH/48 When a host name was looked up from an IP address, and the subsequent
678 forward lookup of the name timed out, the host name was left in
679 $sender_host_name, contrary to the specification.
d7d7b289 680
d7837193
PH
681PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
682 restricted to single-key lookups, Exim was not diagnosing an error if
683 * or *@ was used with a query-style lookup.
684
87054a31
PH
685PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
686
ea2c01d2
MH
687MH/01 local_scan ABI version incremented to 1.1. It should have been updated
688 long ago, but noone interested enough thought of it. Let's just say that
689 the "1.1" means that there are some new functions that weren't there at
690 some point in the past.
691
e4fa6968
PH
692PH/51 Error processing for expansion failure of helo_data from an smtp
693 transport during callout processing was broken.
694
56f5d9bd
PH
695PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
696 tested/used via the -bh/-bhc/-bs options.
697
922e1c28
PH
698PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
699 bug, fixed in subsequent PCRE releases).
700
21eb6e72
PH
701PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
702 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
703
a0540757
PH
704PH/55 Check for a ridiculously long file name in exim_dbmbuild.
705
944e9e9c 706
478be7b0
SC
707Exim version 4.63
708-----------------
709
710SC/01 Use a glob alias rather than an array ref in eximstats generated
711 parser. This improves both readability and performance.
712
713SC/02 Collect SpamAssassin and rejection statistics in eximstats.
714 Don't display local sender or destination tables in eximstats unless
715 there is data to show.
716 Added average volumes into the eximstats top table text output.
717
718SC/03 Collect data on the number of addresses (recipients) as well
719 as the number of messages in eximstats.
720
2b965a65
TF
721TF/01 Correct an error in the documentation for the redirect router. Exim
722 does (usually) call initgroups() when daemonizing.
478be7b0 723
45b91596
PH
724TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
725 with consistent privilege compared to when running as a daemon.
478be7b0 726
c59f5781
TF
727TF/03 Note in the spec that $authenticated_id is not set for local
728 submissions from trusted users.
729
90fc3069
TF
730TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
731 Thanks to Dean Brooks <dean@iglou.com> for the patch.
732
6083aca0
TF
733TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
734 by adding some example configuration directives to the default
735 configuration file. A little bit of work is required to uncomment the
736 directives and define how usernames and passwords are checked, but
737 there is now a framework to start from.
738
765b530f
PH
739PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
740 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
741 without this. I don't know how relevant this is to other LDAP libraries.
742
4e167a8c
PH
743PH/02 Add the verb name to the "unknown ACL verb" error.
744
4608d683
PH
745PH/03 Magnus Holmgren's patch for filter_prepend_home.
746
b8dc3e4a
PH
747PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
748
5418e93b
PH
749PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
750 directory not expanded when it should be if an expanded home directory
751 was set for the address (which is overridden by the transport).
752
b4a9bda2
PH
753PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
754 libradius.
755
45b91596
PH
756PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
757 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
758 because it is too late at that time, and has no effect.
759
5547e2c5
PH
760PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
761 security issue with \' (bugzilla #107). I could not use the
762 PQescapeStringConn() function, because it needs a PGconn value as one of
763 its arguments.
764
dbcef0ea
PH
765PH/08 When testing addresses using -bt, indicate those final addresses that
766 are duplicates that would not cause an additional delivery. At least one
767 person was confused, thinking that -bt output corresponded to deliveries.
768 (Suppressing duplicates isn't a good idea as you lose the information
769 about possibly different redirections that led to the duplicates.)
770
25257489
PH
771PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
772 systems where poll() doesn't work, in particular OS X.
773
c816d124
PH
774PH/10 Added more information to debugging output for retry time not reached.
775
a9ccd69a
PH
776PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
777 operations in malware.c.
778
75fa1910
PH
779PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
780 signatures.
781
a7d7aa58
PH
782PH/13 If write_rejectlog was set false when logging was sent to syslog with
783 syslog_duplication set false, log lines that would normally be written
784 both the the main log and to the reject log were not written to syslog at
785 all.
786
42119b09
PH
787PH/14 In the default configuration, change the use of "message" in ACL warn
788 statements to "add_header".
789
41609df5
PH
790PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
791 not followed by a command (e.g. "seen endif").
792
a5bd321b
PH
793PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
794 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
795 latter.
796
e85a7ad5 797PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
798 so that it is now:
799
e85a7ad5
PH
800 ${if or { \
801 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
802 { match{$h_precedence:}{(?i)bulk|list|junk} } \
803 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
804 }{no}{yes}}
805
e85a7ad5
PH
806 The Auto-Submitted: and various List- headers are standardised, whereas I
807 don't think Precedence: ever was.
5dff5817 808
d8fe1c03
PH
809PH/18 Refactored debugging code in route_finduser() to show more information,
810 in particular, the error code if getpwnam() issues one.
811
16282d2b
PH
812PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
813 This is apparently needed in addition to the PH/07 change above to avoid
814 any possible encoding problems.
815
35d40a98
PH
816PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
817 but not after initializing Perl.
818
034d99ab
PH
819PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
820 output them only if debugging. By default they are written stderr,
821 apparently, which is not desirable.
822
6ec97b1b
PH
823PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
824 queries.
825
e22ca4ac
JJ
826JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
827 --not options
828
829JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
830
33d73e3b
PH
831PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
832 authenticated or an ident call has been made. Suppress the default
833 values for $authenticated_id and $authenticated_sender (but permit -oMai
834 and -oMas) when testing with -bh.
835
9ecb03f3
PH
836PH/24 Re-jigged the order of the tests in the default configuration so that the
837 tests for valid domains and recipients precede the DNS black list and CSA
838 tests, on the grounds that those ones are more expensive.
839
084efe8d
PH
840PH/25 Exim was not testing for a space following SMTP commands such as EHLO
841 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
842 This bug exists in every version of Exim that I still have, right back to
843 0.12.
844
366fc9f0
PH
845PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
846 However, an attempt to turn on case-sensitivity in a regex key by
847 including (?-i) didn't work because the subject string was already
848 lowercased, and the effects were non-intuitive. It turns out that a
849 one-line patch can be used to allow (?-i) to work as expected.
850
c59f5781 851
c887c79e
TF
852Exim version 4.62
853-----------------
854
855TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
856 other effects) broke the use of negated acl sub-conditions.
857
1cce3af8
PH
858PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
859 patch).
860
afb3eaaf
PH
861PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
862 "Deny" causes Exim to reject the incoming connection with a 554 error.
863 Unfortunately, if there is a major crisis, such as a disk failure,
864 tcp-wrappers gives "deny", whereas what one would like would be some
865 kind of temporary error. A kludge has been added to help with this.
866 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
867 554 error is used if errno is still zero or contains ENOENT (which occurs
868 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
869 451 error is used.
870
e173618b
PH
871PH/03 Add -lutil to the default FreeBSD LIBS setting.
872
dd16e114
PH
873PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
874 errors. Otherwise a message that provokes a temporary error (when other
875 messages do not) can cause a whole host to time out.
876
f7fd3850
PH
877PH/05 Batch deliveries by appendfile and pipe transports did not work when the
878 addresses were routed directly to files or pipes from a redirect router.
879 File deliveries just didn't batch; pipe deliveries might have suffered
880 odd errors.
881
d87df92c
PH
882PH/06 A failure to get a lock for a hints database would erroneously always say
883 "Failed to get write lock", even when it was really a read lock.
884
7e9f683d
PH
885PH/07 The appendfile transport was creating MBX lock files with a fixed mode
886 of 0600. This has been changed to use the value of the lockfile_mode
887 option (which defaults to 0600).
888
bfad5236
PH
889PH/08 Applied small patch from the Sieve maintainer.
890
01c490df
PH
891PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
892 folder from quota calculations, a direct delivery into this folder messed
893 up the contents of the maildirsize file. This was because the regex was
894 used only to exclude .Trash (or whatever) when the size of the mailbox
895 was calculated. There was no check that a delivery was happening into an
896 excluded directory. This bug has been fixed by ignoring all quota
897 processing for deliveries into excluded directories.
898
d6629cdc
PH
899PH/10 Added the maildirfolder_create_regex option to appendfile.
900
1cce3af8 901
214e2000
PH
902Exim version 4.61
903-----------------
904
905PH/01 The code for finding all the local interface addresses on a FreeBSD
906 system running IPv6 was broken. This may well have applied to all BSD
907 systems, as well as to others that have similar system calls. The broken
908 code found IPv4 interfaces correctly, but gave incorrect values for the
909 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
910 that it would not match correctly against @[] and not recognize the IPv6
911 addresses as local.
912
f9daeae0
PH
913PH/02 The ipliteral router was not recognizing addresses of the form user@
914 [ipv6:....] because it didn't know about the "ipv6:" prefix.
915
7e66e54d
PH
916PH/03 Added disable_ipv6.
917
c8ea1597
PH
918PH/04 Changed $reply_address to use the raw form of the headers instead of the
919 decoded form, because it is most often used to construct To: headers
920 lines in autoreplies, and the decoded form may well be syntactically
921 invalid. However, $reply_address has leading white space removed, and all
922 newlines turned into spaces so that the autoreply transport does not
923 grumble.
924
911f6fde
PH
925PH/05 If group was specified without a user on a router, and no group or user
926 was specified on a transport, the group from the router was ignored.
927
47ca6d6c
PH
928PH/06 Increased the number of ACL variables to 20 of each type, and arranged
929 for visible compile-time settings that can be used to change these
930 numbers, for those that want even more. Backwards compatibility with old
931 spool files has been maintained. However, going back to a previous Exim
932 release will lost any variables that are in spool files.
933
ed0e9820
PH
934PH/07 Two small changes when running in the test harness: increase delay when
935 passing a TCP/IP connection to a new process, in case the original
936 process has to generate a bounce, and remove special handling of
937 127.0.0.2 (sic), which is no longer necessary.
938
eff37e47
PH
939PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
940 be the same on different OS.
941
1921d2ea
PH
942PH/09 Moved a debug statement in filter processing to avoid a race problem when
943 testing.
944
b3f69ca8
JJ
945JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
946 whether --show-vars was specified or not
947
948JJ/02 exipick: Added support for new ACL variable spool format introduced
949 in 4.61-PH/06
950
424a1c63
PH
951PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
952 syntactically invalid From: or Reply-to: line, and a filter used this to
953 generate an autoreply, and therefore failed to obtain an address for the
954 autoreply, Exim could try to deliver to a non-existent relative file
955 name, causing unrelated and misleading errors. What now happens is that
956 it logs this as a hard delivery error, but does not attempt to create a
957 bounce message.
958
7a100415
PH
959PH/11 The exinext utility has a -C option for testing purposes, but although
960 the given file was scanned by exinext itself; it wasn't being passed on
961 when Exim was called.
962
19b9dc85
PH
963PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
964 an end-of-file indication when reading a command response.
965
309bd837
PH
966PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
967 compiled. In many other places in Exim, IPv6 addresses are always
968 recognized, so I have changed this. It also means that IPv4 domain
969 literals of the form [IPV4:n.n.n.n] are now always recognized.
970
59e82a2a
PH
971PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
972 used if the router is not running as root, for example, when verifying at
973 ACL time, or when using -bh. The debugging output from this situation was
974 non-existent - all you got was a failure to exec. I have made two
975 changes:
976
977 (a) Failures to set uid/gid, the current directory, or a process leader
978 in a subprocess such as that created by queryprogram now generate
979 suitable debugging ouput when -d is set.
980
981 (b) The queryprogram router detects when it is not running as root,
982 outputs suitable debugging information if -d is set, and then runs
983 the subprocess without attempting to change uid/gid.
984
9edc04ce
PH
985PH/15 Minor change to Makefile for building test_host (undocumented testing
986 feature).
987
1349e1e5
PH
988PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
989 additional section of a DNS packet that returns MX or SRV records.
990 Instead, it always explicitly searches for A/AAAA records. This avoids
991 major problems that occur when a DNS server includes only records of one
992 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
993 fixed another bug: if SRV records were looked up and the corresponding
994 address records were *not* found in the additional section, the port
995 values from the SRV records were lost.
996
ea49d0e1
PH
997PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
998 using the correct key (the original address) when searching the retry
999 rules in order to find which one to use for generating the retry hint.
1000
064a94c9
PH
1001PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1002 adding the default one. Similarly, if it contains a Reply-To: header, the
1003 errors_reply_to option, if set, is not used.
1004
727071f8
PH
1005PH/19 When calculating a retry time, Exim used to measure the "time since
1006 failure" by looking at the "first failed" field in the retry record. Now
1007 it does not use this if it is later than than the arrival time of the
1008 message. Instead it uses the arrival time. This makes for better
1009 behaviour in cases where some deliveries succeed, thus re-setting the
1010 "first failed" field. An example is a quota failure for a huge message
1011 when small messages continue to be delivered. Without this change, the
1012 "time since failure" will always be short, possible causing more frequent
1013 delivery attempts for the huge message than are intended.
dd16e114 1014 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1015
f78eb7c6
PH
1016PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1017 $1, $2, $3) because the numerical variables can be reset during some
1018 expansion items (e.g. "match"), thereby losing the authentication data.
1019
21c28500
PH
1020PH/21 Make -bV show the size of off_t variables so that the test suite can
1021 decide whether to run tests for quotas > 2G.
1022
1023PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1024 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1025 filecount value is greater than 2G or if a quota value is greater than 2G
1026 on a system where the size of off_t is not greater than 4, a panic error
1027 is given.
1028
1688f43b
PH
1029PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1030 never match. The debug and -bh output now contains an explicit error
1031 message indicating a malformed IPv4 address or mask.
1032
1033PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1034 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1035 PH/23 above applies.
1036
9675b384
PH
1037PH/25 Do not write to syslog when running in the test harness. The only
1038 occasion when this arises is a failure to open the main or panic logs
1039 (for which there is an explicit test).
1040
6a3f1455
PH
1041PH/26 Added the /no_tell option to "control=freeze".
1042
dac79d3e
PH
1043PH/27 If a host name lookup failed very early in a connection, for example, if
1044 the IP address matched host_lookup and the reverse lookup yielded a name
1045 that did not have a forward lookup, an error message of the form "no IP
1046 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1047 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1048
5977a0b3
PH
1049PH/28 An enabling patch from MH: add new function child_open_exim2() which
1050 allows the sender and the authenticated sender to be set when
1051 submitting a message from within Exim. Since child_open_exim() is
1052 documented for local_scan(), the new function should be too.
1053
c91535f3
PH
1054PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1055 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1056 results in an empty string is now treated as unset.
1057
0d46a8c8
PH
1058PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1059
278c6e6c
PH
1060PH/31 Added sender_verify_fail logging option.
1061
2cbb4081
PH
1062PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1063 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1064 tidied the source and removed it altogether.
1065
3eef829e
PH
1066PH/33 When a queue run was abandoned because the load average was too high, a
1067 log line was always written; now it is written only if the queue_run log
1068 selector is set. In addition, the log line for abandonment now contains
1069 information about the queue run such as the pid. This is always present
1070 in "start" and "stop" lines but was omitted from the "abandon" line.
1071
1ab95fa6
PH
1072PH/34 Omit spaces between a header name and the colon in the error message that
1073 is given when verify = headers_syntax fails (if there are lots of them,
1074 the message gets confusing).
1075
230205fc
PH
1076PH/35 Change the default for dns_check_names_pattern to allow slashes within
1077 names, as there are now some PTR records that contain slashes. This check
1078 is only to protect against broken name servers that fall over on strange
1079 characters, so the fact that it applies to all lookups doesn't matter.
1080
75e0e026
PH
1081PH/36 Now that the new test suite is complete, we can remove some of the
1082 special code in Exim that was needed for the old test suite. For example,
1083 sorting DNS records because real resolvers return them in an arbitrary
1084 order. The new test suite's fake resolver always returns records in the
1085 same order.
1086
1087PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1088 bounces) except when queue_only is set, to avoid logging races between
1089 the different processes.
1090
145396a6
PH
1091PH/38 Panic-die if .include specifies a non-absolute path.
1092
3cd34f13
PH
1093PH/39 A tweak to the "H" retry rule from its user.
1094
11121d3d
JJ
1095JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1096 a label. They prevented compilation on older perls.
1097
1098JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1099 a warning to be raised on newish perls.
1100
1101JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1102 on queue. Changes to match documented behaviour of showing count of
1103 messages matching specified criteria.
1104
8def5aaf
PH
1105PH/40 Changed the default ident timeout from 30s to 5s.
1106
929ba01c
PH
1107PH/41 Added support for the use of login_cap features, on those BSD systems
1108 that have them, for controlling the resources used by pipe deliveries.
1109
2632889e
PH
1110PH/42 The content-scanning code uses fopen() to create files in which to put
1111 message data. Previously it was not paying any attention to the mode of
1112 the files. Exim runs with umask(0) because the rest of the code creates
1113 files with open(), and sets the required mode explicitly. Thus, these
1114 files were ending up world-writeable. This was not a big issue, because,
1115 being within the spool directory, they were not world-accessible. I have
1116 created a function called modefopen, which takes an additional mode
1117 argument. It sets umask(777), creates the file, chmods it to the required
1118 mode, then resets the umask. All the relevant calls to fopen() in the
1119 content scanning code have been changed to use this function.
1120
944a9c55
PH
1121PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1122 to 24 hours. This avoids potential overflow problems when processing G
1123 and H retry rules. I suspect nobody ever tinkers with this value.
1124
4a23603b
PH
1125PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1126
4730f942
PH
1127PH/45 When the plaintext authenticator is running as a client, the server's
1128 challenges are checked to ensure they are valid base64 strings. By
1129 default, the authentication attempt is cancelled if an invalid string is
1130 received. Setting client_ignore_invalid_base64 true ignores these errors.
1131 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1132 they are received. Thus, the responses can be made to depend on the
1133 challenges. If an invalid string is ignored, an empty string is placed in
1134 the variable.
1135
30dba1e6
PH
1136PH/46 Messages that are created by the autoreply transport now contains a
1137 References: header, in accordance with RFCs 2822 and 3834.
1138
382afc6b
PH
1139PH/47 Added authenticated_sender_force to the smtp transport.
1140
a86229cf
PH
1141PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1142
50c99ba6
PH
1143PH/49 Installed latest patch from the Sieve maintainer.
1144
d35e429d
PH
1145PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1146 was also set, the appendfile transport was unnecessarily scanning a
1147 directory of message files (e.g. for maildir delivery) to find the count
1148 of files (along with the size), even though it did not need this
1149 information. It now does the scan only if it needs to find either the
1150 size of the count of files.
1151
f90d018c
PH
1152PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1153
75def545
PH
1154PH/52 Two bugs concerned with error handling when the smtp transport is
1155 used in LMTP mode:
1156
1157 (i) Exim was not creating retry information for temporary errors given
1158 for individual recipients after the DATA command when the smtp transport
1159 was used in LMTP mode. This meant that they could be retried too
1160 frequently, and not timed out correctly.
1161
1162 (ii) Exim was setting the flag that allows error details to be returned
1163 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1164 recipients that were returned after the DATA command.
1165
1166PH/53 This is related to PH/52, but is more general: for any failing address,
1167 when detailed error information was permitted to be returned to the
1168 sender, but the error was temporary, then after the final timeout, only
1169 "retry timeout exceeded" was returned. Now it returns the full error as
1170 well as "retry timeout exceeded".
1171
c46782ef
PH
1172PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1173 do this, and (what is worse) MTAs that accept it.
1174
71fafd95
PH
1175PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1176 will now be deprecated.
1177
2c5db4fd
PH
1178PH/56 New os.c-cygwin from the Cygwin maintainer.
1179
9cf6b11a
JJ
1180JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1181 formats (previously only available in exim formats via -bpr, -bpru,
1182 and -bpra. Now also available in native and exiqgrep formats)
1183
1184JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1185 with very large, slow to parse queues
1186
1187JJ/08 exipick: added ! as generic prefix to negate any criteria format
1188
1189JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1190
898d150f
PH
1191PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1192 responses to authentication challenges, though it was showing the
1193 challenges; (ii) I've removed the CR characters from the debug output for
1194 SMTP output lines.
1195
46218253
PH
1196PH/58 Allow for the insertion of a newline as well as a space when a string
1197 is turned into more than one encoded-word during RFC 2047 encoding. The
1198 Sieve code now uses this.
1199
e97957bc
PH
1200PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1201 data_4xx, lost_connection, tls_required.
1202
81e509d7
PH
1203PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1204 message was being sent as an SMTP response.
1205
3d240ff7
PH
1206PH/61 Add -l and -k options to exicyclog.
1207
b37c4101
PH
1208PH/62 When verifying, if an address was redirected to one new address, so that
1209 verification continued, and the new address failed or deferred after
1210 having set something in $address_data, the value of $address_data was not
1211 passed back to the ACL. This was different to the case when no
1212 redirection occurred. The value is now passed back in both cases.
1213
79378e0f
PH
1214PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1215 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1216 use login_cap.h, so on its own it isn't the distinguishing feature. The
1217 new name refers directly to the setclassresources() function.
1218
e49c7bb4
PH
1219PH/65 Added configuration files for NetBSD3.
1220
d114ec46
PH
1221PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1222
f3d7df6c
PH
1223PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1224 is preferred over IPv4.
1225
715ab376
PH
1226PH/68 The bounce_return_message and bounce_return_body options were not being
1227 honoured for bounces generated during the reception of non-SMTP messages.
1228 In particular, this applied to messages rejected by the ACL. This bug has
1229 been fixed. However, if bounce_return_message is true and bounce_return_
1230 body is false, the headers that are returned for a non-SMTP message
1231 include only those that have been read before the error was detected.
1232 (In the case of an ACL rejection, they have all been read.)
1233
6b31b150
PH
1234PH/69 The HTML version of the specification is now built in a directory called
1235 spec_html instead of spec.html, because the latter looks like a path with
1236 a MIME-type, and this confuses some software.
1237
1238PH/70 Catch two compiler warnings in sieve.c.
1239
d515a917
PH
1240PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1241 function verify_get_ident() calls ip_connect() to connect a socket, but
1242 if the "connect()" function timed out, ip_connect() used to close the
1243 socket. However, verify_get_ident() also closes the socket later, and in
1244 between Exim writes to the log, which may get opened at this point. When
1245 the socket was closed in ip_connect(), the log could get the same file
1246 descriptor number as the socket. This naturally causes chaos. The fix is
1247 not to close the socket in ip_connect(); the socket should be closed by
1248 the function that creates it. There was only one place in the code where
1249 this was missing, in the iplookup router, which I don't think anybody now
1250 uses, but I've fixed it anyway.
1251
9b8fadde
PH
1252PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1253 well as to direct DNS lookups. Otherwise the handling of names in host
1254 lists is inconsistent and therefore confusing.
1255
214e2000 1256
5de37277
PH
1257Exim version 4.60
1258-----------------
1259
cc38ddbf
PH
1260PH/01 Two changes to the default runtime configuration:
1261
1262 (1) Move the checks for relay_from_hosts and authenticated clients from
1263 after to before the (commented out) DNS black list checks.
1264
1265 (2) Add control=submission to the relay_from_hosts and authenticated
1266 clients checks, on the grounds that messages accepted by these
1267 statements are most likely to be submissions.
5de37277 1268
72fdd6ae
PH
1269PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1270
1271 (1) Generate an error if the third argument for the ${prvs expansion is
1272 not a single digit.
1273
1274 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1275 string.
1276
1277 (3) Reset the variables that are obtained from the first argument of
1278 ${prvscheck and used in the second argument before leaving the code,
1279 because their memory is reclaimed, so using them afterwards may do
1280 silly things.
1281
1282 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1283 one (it's much easier than Tom thought :-).
1284
1285 (5) Because of (4), we can now allow for the use of $prvscheck_result
1286 inside the third argument.
cb9328de 1287
cb741023
PH
1288PH/03 For some reason, the default setting of PATH when running a command from
1289 a pipe transport was just "/usr/bin". I have changed it to
1290 "/bin:/usr/bin".
1291
f174f16e
PH
1292PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1293 anything to be listed in the output from -bV.
b2f5a032 1294
c25242d7
PH
1295PH/05 When a filter generated an autoreply, the entire To: header line was
1296 quoted in the delivery log line, like this:
1297
1298 => >A.N.Other <ano@some.domain> <original@ddress> ...
1299
1300 This has been changed so that it extracts the operative address. There
1301 may be more than one such address. If so, they are comma-separated, like
1302 this:
1303
1304 => >ano@some.domain,ona@other.domain <original@ddress> ...
1305
82c19f95
PH
1306PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1307 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1308 not being looked up in the rDNS to get a host name, Exim was showing the
1309 IP address twice in Received: lines, even though the IP addresses were
1310 identical. For example:
1311
1312 Received: from [1.2.3.4] (helo=[1.2.3.4])
1313
1314 However, if the real host name was known, it was omitting the HELO data
1315 if it matched the actual IP address. This has been tidied up so that it
1316 doesn't show the same IP address twice.
1317
d7ffbc12
PH
1318PH/07 When both +timestamp and +memory debugging was on, the value given by
1319 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1320 called by the debug printing, thereby overwriting the timestamp buffer.
1321 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1322
9f526266
PH
1323PH/08 When the original message was included in an autoreply transport, it
1324 always said "this is a copy of the message, including all the headers",
1325 even if body_only or headers_only was set. It now gives an appropriate
1326 message.
1327
87fcc8b9
PH
1328PH/09 Applied a patch from the Sieve maintainer which:
1329
1330 o fixes some comments
1331 o adds the (disabled) notify extension core
1332 o adds some debug output for the result of if/elsif tests
1333 o points to the current vacation draft in the documentation
1334 and documents the missing references header update
1335
1336 and most important:
1337
1338 o fixes a bug in processing the envelope test (when testing
1339 multiple envelope elements, the last element determinted the
1340 result)
1341
456682f5
PH
1342PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1343 Electronic Mail") by including:
1344
1345 Auto-submitted: auto-generated
1346
1347 in the messages that it generates (bounce messages and others, such as
1348 warnings). In the case of bounce messages for non-SMTP mesages, there was
1349 also a typo: it was using "Auto_submitted" (underscore instead of
1350 hyphen). Since every message generated by Exim is necessarily in response
1351 to another message, thes have all been changed to:
1352
1353 Auto-Submitted: auto-replied
1354
1355 in accordance with these statements in the RFC:
1356
1357 The auto-replied keyword:
1358
1359 - SHOULD be used on messages sent in direct response to another
1360 message by an automatic process,
1361
1362 - MUST NOT be used on manually-generated messages,
1363
1364 - MAY be used on Delivery Status Notifications (DSNs) and Message
1365 Disposition Notifications (MDNs),
1366
1367 - MUST NOT be used on messages generated by automatic or periodic
1368 processes, except for messages which are automatic responses to
1369 other messages.
1370
3e46c1aa
PH
1371PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1372 to the default Received: header definition.
456682f5 1373
49826d12
PH
1374PH/12 Added log selector acl_warn_skipped (default on).
1375
eba0c039
PH
1376PH/13 After a successful wildlsearch lookup, discard the values of numeric
1377 variables because (a) they are in the wrong storage pool and (b) even if
1378 they were copied, it wouldn't work properly because of the caching.
1379
a0d6ba8a
PH
1380PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1381 checking when decoding. Apparently there are clients that generate
1382 overlong encoded strings. Why am I not surprised?
1383
f0917727
PH
1384PH/15 If the first argument of "${if match_address" was not empty, but did not
1385 contain an "@" character, Exim crashed. Now it writes a panic log message
1386 and treats the condition as false.
1387
096fee00
PH
1388PH/16 In autoreply, treat an empty string for "once" the same as unset.
1389
024bd3c2
PH
1390PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1391 extension "envelope-auth". The code is finished and in agreement with
1392 other implementations, but there is no documentation so far and in fact,
1393 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1394 not changing the active code.
1395
1396 Print executed "if" and "elsif" statements when debugging is used. This
1397 helps a great deal to understand what a filter does.
1398
1399 Document more things not specified clearly in RFC3028. I had all this
1400 sorted out, when out of a sudden new issues came to my mind. Oops."
1401
df199fec
PH
1402PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1403 (Bugzilla #53).
1404
d27f1df3
PH
1405PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1406 canonical form (as documented). However, after a host name lookup from
1407 the IP address, check_host() was doing a simple string comparison with
1408 addresses acquired from the DNS when checking that the found name did
1409 have the original IP as one of its addresses. Since any found IPv6
1410 addresses are likely to be in abbreviated form, the comparison could
1411 fail. Luckily, there already exists a function for doing the comparison
1412 by converting both addresses to binary, so now that is used instead of
1413 the text comparison.
1414
96776534
PH
1415PH/20 There was another similar case to PH/19, when a complete host name was
1416 given in a host list; looking up its IP address could give an abbreviated
1417 form, whereas the current host's name might or might not be abbreviated.
1418 The same fix has been applied.
1419
5de37277 1420
9a799bc0
PH
1421Exim version 4.54
1422-----------------
1423
1424PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1425 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1426 It now does.
1427
99a4b039
PH
1428PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1429 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1430
1431PH/03 Typo: missing ".o" in src/pcre/Makefile.
1432
4b233853
PH
1433PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1434 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1435 Also, for "Auto-Submitted", treat anything other than "no" as
1436 non-personal, in accordance with RFC 3834. (Previously it treated
1437 anything starting "auto-" as non-personal.)
1438
8857ccfd
PH
1439TF/01 The control=submission/name=... option had a problem with syntax
1440 errors if the name included a slash character. The /name= option
1441 now slurps the rest of the string, so it can include any characters
1442 but it must come last in the list of options (after /sender_retain
1443 or /domain=).
1444
433a2980
PH
1445PH/05 Some modifications to the interface to the fake nameserver for the new
1446 testing suite.
1447
3e46c1aa 1448
9a799bc0 1449
e3a311ba
TK
1450Exim version 4.53
1451-----------------
1452
1453TK/01 Added the "success_on_redirect" address verification option. See
1454 NewStuff for rationale and an example.
1455
13b685f9
PH
1456PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1457
395ff96d
PH
1458PH/02 Patch to exigrep to allow it to work on syslog lines.
1459
5b68f6e4
PH
1460PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1461 fread() to skip over the body file's header line, because in Cygwin the
1462 header line is locked and is inaccessible.
1463
1ab52c69
PH
1464PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1465 co-exist for some time) to make it clear that it is the Exim ID that is
1466 referenced, not the Message-ID: header line.
1467
b07e6aa3
PH
1468PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1469 string_format() function, because snprintf() does not exist on all
1470 operating systems.
1471
254e032f
PH
1472PH/06 The use of forbid_filter_existstest now also locks out the use of the
1473 ${stat: expansion item.
1474
3af76a81
PH
1475PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1476 protocol synchronization error", to keep the pedants happy.
1477
2548ba04
PH
1478PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1479 well as for IRIX systems, when gcc is being used. See the host.c source
1480 file for comments.
1481
b6c6011d
PH
1482PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1483
cf39cf57
PH
1484PH/10 Named domain lists were not working if used in a queue_smtp_domains
1485 setting.
1486
f1513293
PH
1487PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1488 transport and to the smtp transport in LMTP mode.
1489
727549a4
PH
1490TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1491
af46795e
PH
1492PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1493 run a filter in a subprocess. This could lead to confusion in subsequent
1494 lookups in the parent process. There should also be a search_tidyup() at
1495 the end of the subprocess.
1496
d7b47fd0
PH
1497PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1498 only if the host matched helo_try_verify_hosts, which caused the
1499 verification to occur when the EHLO/HELO command was issued. The ACL just
1500 tested the remembered result. Now, if a previous verification attempt has
1501 not happened, "verify = helo" does it there and then.
1502
ee744174
JJ
1503JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1504
b582ab87
PH
1505TK/03 Fix log output including CR from clamd.
1506
41a13e0a
PH
1507PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1508 exist provoked a memory error which could cause a segfault.
1509
f625cc5a
PH
1510PH/15 Installed PCRE 6.2
1511
1512PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1513
21f7af35
PH
1514PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1515 of the problem. Specifically, suggested +O2 rather than +O1 for the
1516 HP-UX compiler.
1517
31480e42
PH
1518PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1519
2d280592
PH
1520PH/20 If a delivery was routed to a non-standard port by means of an SRV
1521 record, the port was not correctly logged when the outgoing_port log
1522 selector was set (it logged the transort's default port).
1523
7cd1141b
PH
1524PH/21 Added support for host-specific ports to manualroute, queryprogram,
1525 fallback_hosts, and "hosts" in the smtp transport.
1526
1527PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1528 host errors such as "Connection refused".
1529
750af86e
PH
1530PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1531 authentication with radiusclient 0.4.9:
1532
1533 - Error returned from rc_read_config was caught wrongly
1534 - Username/password not passed on to radius server due to wrong length.
1535
1536 The presumption is that some radiusclient API changes for 4.51/PH/17
1537 were not taken care of correctly. The code is still untested by me (my
1538 Linux distribution still has 0.3.2 of radiusclient), but it was
1539 contributed by a Radius user.
1540
1541PH/24 When doing a callout, the value of $domain wasn't set correctly when
1542 expanding the "port" option of the smtp transport.
1543
4304270b
TK
1544TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1545 while reading a MIME header. Thanks to Tom Hughes for a patch.
1546
750af86e
PH
1547PH/24 Include config.h inside local_scan.h so that configuration settings are
1548 available.
1549
64ffc24f
PH
1550PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1551 that in an ACL for RCPT (for example), you can examine exactly what was
1552 received.
1553
5dd9625b
PH
1554PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1555 commands, but it was not correctly comparing the address with the actual
1556 client host address. Thus, it would show the EHLO address in Received:
1557 header lines when this was not necessary.
1558
5591031b
PH
1559PH/27 Added the % operator to ${eval:}.
1560
ba18e66a
PH
1561PH/28 Exim tries to create and chdir to its spool directory when it starts;
1562 it should be ignoring failures (because with -C, for example, it has lost
1563 privilege). It wasn't ignoring creation failures other than "already
1564 exists".
1565
9cec981f
PH
1566PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1567 -bV or -d is used.
1568
aa2b5c79
PH
1569PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1570 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1571 too many continuations, the temporary file was not being removed, and the
1572 return code was incorrect.
aa2b5c79 1573
48a53b7f
PH
1574PH/31 Missing "BOOL" in function definition in filtertest.c.
1575
1c59d63b
PH
1576PH/32 Applied Sieve patches from the maintainer.
1577
671012da
TK
1578TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1579
1509d3a8
PH
1580PH/33 Added "verify = not_blind".
1581
1582PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1583 Local/Makefile (with some defaults set). These are used in built scripts
1584 such as exicyclog, but they have never been used in the exim_install
1585 script (though there are many overriding facilities there). I have
1586 arranged that the exim_install script now takes note of these two
1587 settings.
1588
1589PH/35 Installed configuration files for Dragonfly.
1590
2fe1a124
PH
1591PH/36 When a locally submitted message by a trusted user did not contain a
1592 From: header, and the sender address was obtained from -f or from an SMTP
1593 MAIL command, and the trusted user did not use -F to supply a sender
1594 name, $originator_name was incorrectly used when constructing a From:
1595 header. Furthermore, $originator_name was used for submission mode
1596 messages from external hosts without From: headers in a similar way,
1597 which is clearly wrong.
1598
8800895a
PH
1599PH/37 Added control=suppress_local_fixups.
1600
ccfdb010
PH
1601PH/38 When log_selector = +received_sender was set, and the addition of the
1602 sender made the log line's construction buffer exactly full, or one byte
1603 less than full, an overflow happened when the terminating "\n" was
1604 subsequently added.
1605
1130bfb0
PH
1606PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1607 when the result of a list match is failure because a DNS lookup failed.
1608
ebcb507f
PH
1609PH/40 RM_COMMAND is now used in the building process.
1610
c35e155c
PH
1611PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1612 the "build-* directories that it finds.
1613
95d1f782
PH
1614PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1615 address in a domain literal was a prefix of an interface address.
1616
fd6de02e
PH
1617PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1618 when verifying a sender address, unless rewrite_headers is false.
1619
58de37c5
PH
1620PH/44 Wrote a long comment about why errors_to addresses are verified as
1621 recipients, not senders.
1622
261cf466
TF
1623TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1624 the ratelimit ACL was added.
1625
3ee512ff
PH
1626PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1627
e08c430f
PH
1628PH/46 Added extra information about PostgreSQL errors to the error string.
1629
bef5a11f
PH
1630PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1631 avoiding the need to install special zones in a real server. This is
1632 backwards compatible; if it can't find the fake resolver, it drops back.
1633 Thus, both old and new test suites can be run.
1634
7546de58
TF
1635TF/02 Added util/ratelimit.pl
1636
e5d5a95f
TF
1637TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1638 clock is set back in time.
1639
2e88a017
TF
1640TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1641 Candler <B.Candler@pobox.com>.
1642
a5f65aa4
TF
1643TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1644 OK for addresses that are the result of redirections.
1645
e7726cbf
PH
1646PH/48 A number of further additions for the benefit of the new test suite,
1647 including a fake gethostbyname() that interfaces to the fake DNS resolver
1648 (see PH/47 above).
1649
a7fdad5b
TF
1650TF/06 The fix for widen_domains has also been applied to qualify_single and
1651 search_parents which are the other dnslookup options that can cause
1652 header rewrites.
1653
6af56900
PH
1654PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1655 type ("H").
1656
0925ede6
PH
1657PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1658
66afa403
TF
1659TF/07 Exim produced the error message "an SRV record indicated no SMTP
1660 service" if it encountered an MX record with an empty target hostname.
1661 The message is now "an MX or SRV record indicated no SMTP service".
1662
0154e85a
TF
1663TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1664 if the DNS of the sending site is misconfigured. This is quite a
1665 common situation. This change restores the behaviour of treating a
1666 helo verification defer as a failure.
1667
16f12c76
PH
1668PH/51 If self=fail was set on a router, the bounce message did not include the
1669 actual error message.
1670
bbe902f0 1671
e5a9dba6
PH
1672Exim version 4.52
1673-----------------
1674
1675TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1676
22c3b60b
PH
1677PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1678 command itself ended in error, the underlying message about the transport
1679 filter timeout was being overwritten with the pipe command error. Now the
1680 underlying error message should be appended to the second error message.
1681
06a9b4b5
PH
1682TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1683
c1ac6996
PH
1684PH/02 Reduce the amount of output that "make" produces by default. Full output
1685 can still be requested.
1686
9c7a242c
PH
1687PH/03 The warning log line about a condition test deferring for a "warn" verb
1688 was being output only once per connection, rather than after each
1689 occurrence (because it was using the same function as for successful
1690 "warn" verbs). This seems wrong, so I have changed it.
1691
87ba3f5f
PH
1692TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1693 it should not have, which might have caused a crash in the right
1694 circumstances, but probably never did.
1695
1696PH/04 Installed a modified version of Tony Finch's patch to make submission
1697 mode fix the return path as well as the Sender: header line, and to
1698 add a /name= option so that you can make the user's friendly name appear
1699 in the header line.
1700
29aba418
TF
1701TF/03 Added the control = fakedefer ACL modifier.
1702
fe0dab11
TF
1703TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1704 Mark Lowes for thorough testing.
870f6ba8 1705
11d337a4
TK
1706TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1707
1708TK/03 Merged latest SRS patch from Miles Wilton.
1709
415c8f3b
PH
1710PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1711 with the definition in sysexits.h (which is #included earlier).
1712 Fortunately, Exim does not actually use EX_OK. The code used to try to
1713 preserve the sysexits.h value, by assumimg that macro definitions were
1714 scanned for macro replacements. I have been disabused of this notion,
1715 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1716
958541e9
PH
1717PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1718 in the smtp transport. When a block could not be written in a single
1719 write() function, the timeout was being re-applied to each part-write.
1720 This seems wrong - if the receiver was accepting one byte at a time it
1721 would take for ever. The timeout is now adjusted when this happens. It
1722 doesn't have to be particularly precise.
1723
c206415f
TK
1724TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1725 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1726
2a4be8f9
PH
1727PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1728 without a domain if the check to <postmaster@domain> fails.
1729
1cba11c5
SC
1730SC/01 Eximstats: added -xls and the ability to specify output files
1731 (patch written by Frank Heydlauf).
1732
1733SC/02 Eximstats: use FileHandles for outputing results.
1734
1735SC/03 Eximstats: allow any combination of xls, txt, and html output.
1736
1737SC/04 Eximstats: fixed display of large numbers with -nvr option
1738
1739SC/05 Eximstats: fixed merging of reports with empty tables.
1740
1741SC/06 Eximstats: added the -include_original_destination flag
1742
1743SC/07 Eximstats: removed tabs and trailing whitespace.
1744
1005d00e
TK
1745TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1746
1747TK/06 MBOX spool code: Add real "From " MBOX separator line
1748 so the .eml file is really in mbox format (even though
1749 most programs do not really care). Patch from Alex Miller.
1750
1751TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1752 The latter is generated from $received_to and is only set if the
1753 message has one envelope recipient. SA can use these headers,
1754 obviously out-of-the-box. Patch from Alex Miller.
1755
9b4768fa
PH
1756PH/08 The ${def test on a variable was returning false if the variable's
1757 value was "0", contrary to what the specification has always said!
1758 The result should be true unless the variable is empty.
1759
1760PH/09 The syntax error of a character other than { following "${if
1761 def:variable_name" (after optional whitespace) was not being diagnosed.
1762 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1763 accidental colon was present, for example, could give incorrect results.
1764
0d7eb84a
PH
1765PH/10 Tidied the code in a number of places where the st_size field of a stat()
1766 result is used (not including appendfile, where other changes are about
1767 to be made).
1768
1769PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1770 This involved changing a lot of size variables from int to off_t. It
1771 should work with maildirs and everything.
1772
40727bee
TK
1773TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1774 spamd dying while we are connected to it.
1775
554d2369
TF
1776TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1777 <jgh@wizmail.org>
1778
1f922db1
PH
1779PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1780 function for BDB 4.3.
1781
ef213c3b
PH
1782PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1783
8ac170f3
PH
1784PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1785 the sources for PCRE have been re-arranged and more files are now
1786 involved.
1787
b1c749bb
PH
1788PH/15 The code I had for printing potentially long long variables in PH/11
1789 above was not the best (it lost precision). The length of off_t variables
1790 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1791 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1792 to be "long long int" or "long int". This is needed for the internal
1793 formatting function string_vformat().
b1c749bb 1794
4aac9b49
PH
1795PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1796 the configuration file to be ":syslog", then the script "guesses" where
1797 the logs files are, rather than using the compiled in default. In our
1798 case the guess is not the same as the compiled default, so the script
1799 suddenly stopped working when I started to use syslog. The patch checks
1800 to see if log_file_path is "". If so, it attempts to read it from exim
1801 with no configuration file to get the compiled in version, before it
1802 falls back to the previous guessing code."
1803
294520c8
TK
1804TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1805 implementing BATV in an Exim configuration. See NewStuff for the gory
1806 details.
1807
5bd022fe
PH
1808PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1809 Makefile that are specific to HP-UX.
1810
90e9ce59
PH
1811PH/18 If the "use_postmaster" option was set for a recipient callout together
1812 with the "random" option, the postmaster address was used as the MAIL
1813 FROM address for the random test, but not for the subsequent recipient
1814 test. It is now used for both.
1815
5ea81592
PH
1816PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1817 patch removes a few documentation additions to RFC 3028, because the
1818 latest draft now contains them. It adds the new en;ascii-case comparator
1819 and a new error check for 8bit text in MIME parts. Comparator and
1820 require names are now matched exactly. I enabled the subaddress
1821 extension, but it is not well tested yet (read: it works for me)."
1822
c6c2dc1d
PH
1823PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1824 rework some of the code of TK/09 above to avoid the hardwired use of
1825 "%lld" and "long long". Replaced the call to snprintf() with a call to
1826 string_vformat().
1827
fffffe4c
PH
1828PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1829 records point to non-existent hosts", "retry timeout exceeded", and
1830 "retry time not reached for any host after a long failure period".
ca02eafb 1831
9a26b6b2
PH
1832PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1833 experimental DomainKeys support:
1834
1835 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1836 (2) On an error such as an illegally used "control", the wrong name for
1837 the control was given.
1838
1839 These problems did NOT occur unless DomainKeys support was compiled.
1840
4aee0225
PH
1841PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1842
32d668a5
PH
1843PH/24 Added ${if match_ip condition.
1844
8187c3f3
PH
1845PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1846 databases so that it will be absolutely obvious if a crash occurs in the
1847 DB library. This is a regular occurrence (often caused by mis-matched
1848 db.h files).
1849
ff790e47 1850PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1851 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1852 picked up on a user's system that detects such things. There doesn't seem
1853 to be a gcc warning option for this - only an attribute that has to be
1854 put on the function's prototype. It seems that in Fedora Core 4 they have
1855 set this on a number of new functions. No doubt there will be more in due
1856 course.
ff790e47 1857
5417f6d1
PH
1858PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1859 specify a transport. However, if an address that was verified by such a
1860 router was the subject of a callout, Exim crashed because it tried to
1861 read the rcpt_include_affixes from the non-existent transport. Now it
1862 just assumes that the setting of that option is false. This bug was
1863 introduced by 4.51/PH/31.
1864
59cf8544
PH
1865PH/28 Changed -d+all to exclude +memory, because that information is very
1866 rarely of interest, but it makes the output a lot bigger. People tend to
1867 do -d+all out of habit.
1868
e7ad8a65
PH
1869PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1870 code in os-type was giving problems when libc.so lives in lib64, like on
1871 x86_64 Fedora Core.
1872
ade42478
PH
1873PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1874 aren't the modern standard, and it seems that some systems' include files
1875 don't always have them. Exim was already checking for some of the newer
1876 ones like T_AAAA, and defining it itself. I've added checks for all the
1877 record types that Exim uses.
1878
182ad5cf
PH
1879PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1880 not automatically generating a new one, as it is supposed to. This
1881 prevented TLS from working. If the file did exist, but contained invalid
1882 data, a new version was generated, as expected. It was only the case of a
1883 non-existent file that was broken.
1884
b0d9fc80
TK
1885TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1886 with a change in libdomainkeys > 0.64.
1887
1888TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1889 from DNS. If the selector record carries the flag, it now has
1890 precedence over the domain-wide flag.
1891
1892TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1893
47c7a64a
PH
1894PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1895 the use of a port name that isn't defined in /etc/services) occurred, the
1896 message was deferred as in a normal delivery, and thus remained on the
1897 spool, instead of being failed because of the mua_wrapper setting. This
1898 is now fixed, and I tidied up some of the mua_wrapper messages at the
1899 same time.
1900
a388bce4
SC
1901SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1902 the messages in a hash of arrays rather than using individual hashes.
1903 This is a bit cleaner and results in dramatic memory savings, albeit
1904 at a slight CPU cost.
1905
1906SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1907 as requested by Marc Sherman.
1908
1909SC/10 Eximstats: added histograms for user specified patterns as requested
1910 by Marc Sherman.
1911
0793e4ed
SC
1912SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1913
c58b88df
PH
1914PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1915 fopen() in the content-scanning modules that did not already have it.
1916
e7ad8a65 1917
7982096b
PH
1918Exim version 4.51
1919-----------------
1920
1a46a8c5
PH
1921TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1922 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1923
2f079f46 1924TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1925
1926TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1927
1928PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1929 to test Sieve filters that use "vacation".
1930
1931PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1932 that changes the way the GnuTLS parameters are stored in the cache file.
1933 The new format can be generated externally. For backward compatibility,
1934 if the data in the cache doesn't make sense, Exim assumes it has read an
1935 old-format file, and it generates new data and writes a new file. This
1936 means that you can't go back to an older release without removing the
1937 file.
1938
1939PH/03 A redirect router that has both "unseen" and "one_time" set does not
1940 work if there are any delivery delays because "one_time" forces the
1941 parent to be marked "delivered", so its unseen clone is never tried
1942 again. For this reason, Exim now forbids the simultaneous setting of
1943 these two options.
1944
1945PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1946 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1947 entry if you want to know the details. The fix, however, neglected to
1948 consider the case when local delivery batching is involved. The test for
1949 "previously delivered" was not happening when checking to see if an
1950 address could be batched with a previous (undelivered) one; under
1951 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1952 address.
1a46a8c5
PH
1953
1954PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1955 in its include files, and this causes problems building Exim.
1956
1957PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1958 header_syntax) but Exim was just ignoring anything given after a slash.
1959 In particular, this caused confusion with an attempt to use "verify =
1960 reverse_host_lookup/defer_ok". An error is now given when options are
1961 supplied for verify items that do not have them. (Maybe reverse_host_
1962 lookup should have a defer_ok option, but that's a different point.)
1963
1964PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1965 defined by RFC 821) to 2048, because there were problems with some AUTH
1966 commands, and RFC 1869 says the size should be increased for extended
1967 SMTP commands that take arguments.
1968
1969PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1970 Finch).
1971
1972PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1973 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1974
49c2d5ea
PH
1975PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1976 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1977 whatever). Otherwise the password may appear in the log. Following change
1978 PH/42 below, there is no longer a chance of it appearing in a bounce
1979 message.
49c2d5ea 1980
bf759a8b
PH
1981PH/11 Installed exipick version 20050225.0 from John Jetmore.
1982
83364d30
PH
1983PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1984 of its addresses was ever tried. (Bugzilla bug #2.)
1985
7999bbd7
PH
1986PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1987 the result incorrectly in the debug output. (It correctly added a newline
1988 to what was transported.)
1989
7dbf77c9
PH
1990TF/01 Added $received_time.
1991
74e0617f
PH
1992PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1993 commented out examples of how to interface to a virus scanner and to
1994 SpamAssassin. Also added commented examples of av_scanner and
1995 spamd_address settings.
1996
2f079f46
PH
1997PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1998 and controls are allowed in which ACLs. There were a couple of minor
1999 errors. Some of the entries in the conditions table (which is a table of
2000 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2001 negation of where the condition IS allowed.
2002
8c841523
PH
2003PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2004
7766a4f0
PH
2005PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2006 header file does not have a version number, so I've had to invent a new
2007 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2008 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2009 radiusclient), but it was contributed by a Radius user.
2010
8b417f2c
PH
2011PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2012 files or directories, for OpenSSL.
2013
901f42cb
PH
2014PH/19 When an Exim process that is running as root has to create an Exim log
2015 file, it does so in a subprocess that runs as exim:exim so as to get the
2016 ownership right at creation (otherwise, other Exim processes might see
2017 the file with the wrong ownership). There was no test for failure of this
2018 fork() call, which would lead to the process getting stuck as it waited
2019 for a non-existent subprocess. Forks do occasionally fail when resources
2020 run out. I reviewed all the other calls to fork(); they all seem to check
2021 for failure.
2022
f9b9210e
PH
2023PH/20 When checking for unexpected SMTP input at connect time (before writing
2024 the banner), Exim was not dealing correctly with a non-positive return
2025 from the read() function. If the client had disconnected by this time,
2026 the result was a log entry for a synchronization error with an empty
2027 string after "input=" when read() returned zero. If read() returned -1
2028 (an event I could not check), uninitialized data bytes were printed.
2029 There were reports of junk text (parts of files, etc) appearing after
2030 "input=".
2031
54cdb463
PH
2032PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2033
cf00dad6
PH
2034PH/22 Added support for macro redefinition, and (re)definition in between
2035 driver and ACL definitions.
2036
acb1b346
PH
2037PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2038 forgetting to use the resulting value; it was using the unexpanded value.
2039
c5ddb310
PH
2040PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2041 hadn't been configured. The fix is from Juergen Kreileder, who
2042 understands it better than I do:
2043
2044 "Here's what I see happening with three configured cyrus_sasl
2045 authenticators configured (plain, login, cram-md5):
2046
2047 On startup auth_cyrus_sasl_init() gets called for each of these.
2048 This means three calls to sasl_listmech() without a specified mech_list.
2049 => SASL tests which mechs of all available mechs actually work
2050 => three warnings about OTP not working
2051 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2052
2053 With the patch, sasl_listmech() also gets called three times. But now
2054 SASL's mech_list option is set to the server_mech specified in the the
2055 authenticator. Or in other words, the answer from sasl_listmech()
2056 gets limited to just the mech you're testing for (which is different
2057 for each call.)
2058 => the return list contains just 'plain' or 'login', 'cram-md5' or
2059 nothing depending on the value of ob->server_mech.
2060
2061 I've just tested the patch: Authentication still works fine,
2062 unavailable mechs specified in the exim configuration are still
2063 caught, and the auth.log warnings about OTP are gone."
2064
31619da6
PH
2065PH/25 When debugging is enabled, the contents of the command line are added
2066 to the debugging output, even when log_selector=+arguments is not
2067 specified.
2068
bebaf0fc
PH
2069PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2070 answer is "GNU", and only if the return is "GNU/something" is the answer
2071 "Linux".
2072
475fe28a
PH
2073PH/27 $acl_verify_message is now set immediately after the failure of a
2074 verification in an ACL, and so is available in subsequent modifiers. In
2075 particular, the message can be preserved by coding like this:
2076
2077 warn !verify = sender
2078 set acl_m0 = $acl_verify_message
2079
2080 Previously, $acl_verify_message was set only while expanding "message"
2081 and "log_message" when a very denied access.
2082
7e8bec7a
PH
2083PH/28 Modified OS/os.c-Linux with
2084
2085 -#ifndef OS_LOAD_AVERAGE
2086 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2087
2088 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2089 nomenclature these days.)
2090
e4a89c47
PH
2091PH/29 Installed patch from the Sieve maintainer that adds the options
2092 sieve_useraddress and sieve_subaddress to the redirect router.
2093
5ca2a9a1
PH
2094PH/30 In these circumstances:
2095 . Two addresses routed to the same list of hosts;
2096 . First host does not offer TLS;
2097 . First host accepts first address;
2098 . First host gives temporary error to second address;
2099 . Second host offers TLS and a TLS session is established;
2100 . Second host accepts second address.
2101 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2102 and peerdn, if requested) that were in fact used only for the second
2103 address.
7e8bec7a 2104
c688b954
PH
2105PH/31 When doing a callout as part of verifying an address, Exim was not paying
2106 attention to any local part prefix or suffix that was matched by the
2107 router that accepted the address. It now behaves in the same way as it
2108 does for delivery: the affixes are removed from the local part unless
2109 rcpt_include_affixes is set on the transport.
2110
fed77020
PH
2111PH/32 Add the sender address, as F=<...>, to the log line when logging a
2112 timeout during the DATA phase of an incoming message.
2113
7fe1560f
PH
2114PH/33 Sieve envelope tests were broken for match types other than :is. I have
2115 applied a patch sanctioned by the Sieve maintainer.
c688b954 2116
ebb6e6d5
PH
2117PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2118 the uid or gid is negative. A case of a negative gid caused this to be
2119 noticed. The fix allows for either to be negative.
2120
9c4e8f60
PH
2121PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2122 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2123 overlooked.
2124
2125PH/36 The change PH/12 above was broken. Fixed it.
2126
d7174846
PH
2127PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2128 the grounds that routing the same address twice would always produce the
2129 same answer. This might have been true once, but it is certainly no
2130 longer true now. Routing a child address may depend on the previous
2131 routing that produced that child. Some complicated redirection strategies
2132 went wrong when messages had multiple recipients, and made Exim's
2133 behaviour dependent on the order in which the addresses were given.
2134
2135 I have moved the duplicate checking until after the routing is complete.
2136 Exim scans the addresses that are assigned to local and remote
2137 transports, and removes any duplicates. This means that more work will be
2138 done, as duplicates will always all be routed, but duplicates are
2139 presumably rare, so I don't expect this is of any significance.
2140
2141 For deliveries to pipes, files, and autoreplies, the duplicate checking
2142 still happens during the routing process, since they are not going to be
2143 routed further.
2144
cfe75fc3
PH
2145PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2146 It corrects a timeout issue with spamd. This is Ian's comment: "The
2147 background is that sometimes spamd either never reads data from a
2148 connection it has accepted, or it never writes response data. The exiscan
2149 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2150 blindly assumes that writes won't block so it may never time out."
2151
be22d70e
PH
2152PH/39 Allow G after quota size as well as K and M.
2153
0612b098
PH
2154PH/40 The value set for $authenticated_id in an authenticator may not contain
2155 binary zeroes or newlines because the value is written to log lines and
2156 to spool files. There was no check on this. Now the value is run through
2157 the string_printing() function so that such characters are converted to
2158 printable escape sequences.
2159
2e0c1448
PH
2160PH/41 $message_linecount is a new variable that contains the total number of
2161 lines in the message. Compare $body_linecount, which is the count for the
2162 body only.
2163
447d236c
PH
2164PH/42 Exim no longer gives details of delivery errors for specific addresses in
2165 bounce and delay warning messages, except in certain special cases, which
2166 are as follows:
2167
2168 (a) An SMTP error message from a remote host;
2169 (b) A message specified in a :fail: redirection;
2170 (c) A message specified in a "fail" command in a system filter;
2171 (d) A message specified in a FAIL return from the queryprogram router;
2172 (e) A message specified by the cannot_route_message router option.
2173
2174 In these cases only, Exim does include the error details in bounce and
2175 warning messages. There are also a few cases where bland messages such
2176 as "unrouteable address" or "local delivery error" are given.
2177
d20976dc
PH
2178PH/43 $value is now also set for the "else" part of a ${run expansion.
2179
f656d135
PH
2180PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2181 being worked on, but at least Exim now implements the latest version to
2182 play with."
2183
2e2a30b4
PH
2184PH/45 In a pipe transport, although a timeout while waiting for the pipe
2185 process to complete was treated as a delivery failure, a timeout while
2186 writing the message to the pipe was logged, but erroneously treated as a
2187 successful delivery. Such timeouts include transport filter timeouts. For
2188 consistency with the overall process timeout, these timeouts are now
2189 treated as errors, giving rise to delivery failures by default. However,
2190 there is now a new Boolean option for the pipe transport called
2191 timeout_defer, which, if set TRUE, converts the failures into defers for
2192 both kinds of timeout. A transport filter timeout is now identified in
2193 the log output.
2194
9176e9f0
PH
2195PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2196 systems where "make" and "gmake" are different, calling "gmake" at top
2197 level broke things. I've arranged for the value of $(MAKE) to be passed
2198 from the Makefile to this script so that it can call the same version of
2199 "make".
2200
7982096b 2201
bbe902f0
PH
2202A note about Exim versions 4.44 and 4.50
2203----------------------------------------
2204
2205Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2206changes of various kinds. As a consequence, a big documentation update was
2207needed. This delayed the release for rather longer than seemed good, especially
2208in the light of a couple of (minor) security issues. Therefore, the changes
2209that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2210release. So 4.44 and 4.50 are in effect two different branches that both start
2211from 4.43.
2212
2213I have left the 4.50 change log unchanged; it contains all the changes since
22144.43. The change log for 4.44 is below; many of its items are identical to
2215those for 4.50. This seems to be the most sensible way to preserve the
2216historical information.
2217
2218
f7b63901 2219Exim version 4.50
495ae4b0
PH
2220-----------------
2221
5fe762f6
PH
2222 1. Minor wording change to the doc/README.SIEVE file.
2223
139059f6 2224 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2225 computation of the current number of files was incorrect.
495ae4b0 2226
7086e875
PH
2227 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2228 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2229 place.
2230
35af9f61
PH
2231 4. Give more explanation in the error message when the command for a transport
2232 filter fails to execute.
2233
b668c215
PH
2234 5. There are several places where Exim runs a non-Exim command in a
2235 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2236 was being done only for the command run by the queryprogram router. It is
2237 now done for all such subprocesses. The other cases are: ${run, transport
2238 filters, and the commands run by the lmtp and pipe transports.
2239
a494b1e1
PH
2240 6. Added CONFIGURE_GROUP build-time option.
2241
2242 7. Some older OS have a limit of 256 on the maximum number of file
2243 descriptors. Exim was using setrlimit() to set 1000 as a large value
2244 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2245 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2246
c5fcb476
PH
2247 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2248 was an oversight, and furthermore, ever since the addition of extra
2249 controls (e.g. 4.43/32), the checks on when to allow different forms of
2250 "control" were broken. There should now be diagnostics for all cases when a
2251 control that does not make sense is encountered.
2252
69358f02
PH
2253 9. Added the /retain_sender option to "control=submission".
2254
5be20824
PH
225510. $recipients is now available in the predata ACL (oversight).
2256
eb2c0248
PH
225711. Tidy the search cache before the fork to do a delivery from a message
2258 received from the command line. Otherwise the child will trigger a lookup
2259 failure and thereby defer the delivery if it tries to use (for example) a
2260 cached ldap connection that the parent has called unbind on.
2261
2a3eea10
PH
226212. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2263 of $address_data from the recipient verification was clobbered by the
2264 sender verification.
2265
226613. The value of address_data from a sender verification is now available in
2267 $sender_address_data in subsequent conditions in the ACL statement.
2268
23c7ff99
PH
226914. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2270
4deaf07d
PH
227115. Added a new option "connect=<time>" to callout options, to set a different
2272 connection timeout.
2273
926e1192
PH
227416. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2275 was its contents. (It was OK if the option was not defined at all.)
2276
650edc6f
PH
227717. A "Completed" log line is now written for messages that are removed from
2278 the spool by the -Mrm option.
2279
2c7db3f5
PH
228018. New variables $sender_verify_failure and $recipient_verify_failure contain
2281 information about exactly what failed.
2282
3d235903
PH
228319. Added -dd to debug only the daemon process.
2284
7c7ad977
PH
228520. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2286 handles timeouts, both on the server side and network timeouts. Renamed the
2287 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2288
981756db
PH
228921. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2290 It is now set to "smtps".
2291
d4eb88df
PH
229222. $host_address is now set to the target address during the checking of
2293 ignore_target_hosts.
2294
229523. When checking ignore_target_hosts for an ipliteral router, no host name was
2296 being passed; this would have caused $sender_host_name to have been used if
2297 matching the list had actually called for a host name (not very likely,
2298 since this list is usually IP addresses). A host name is now passed as
2299 "[x.x.x.x]".
2300
7d468ab8
PH
230124. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2302 code that specifies a non-restarting handler (typically sigaction() in
2303 modern systems) in an attempt to fix a rare and obscure crash bug.
2304
230525. Narrowed the window for a race in the daemon that could cause it to ignore
2306 SIGCHLD signals. This is not a major problem, because they are used only to
2307 wake it up if nothing else does.
2308
62c0818f
PH
230926. A malformed maildirsize file could cause Exim to calculate negative values
2310 for the mailbox size or file count. Odd effects could occur as a result.
2311 The maildirsize information is now recalculated if the size or filecount
2312 end up negative.
2313
26034054
PH
231427. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2315 support for a long time. Removed HAVE_SYS_VFS_H.
2316
af66f652
PH
231728. Installed the latest version of exipick from John Jetmore.
2318
90af77f4
PH
231929. In an address list, if the pattern was not a regular expression, an empty
2320 subject address (from a bounce message) matched only if the pattern was an
2321 empty string. Non-empty patterns were not even tested. This was the wrong
2322 because it is perfectly reasonable to use an empty address as part of a
2323 database query. An empty address is now tested by patterns that are
2324 lookups. However, all the other forms of pattern expect the subject to
2325 contain a local part and a domain, and therefore, for them, an empty
2326 address still always fails if the pattern is not itself empty.
2327
d8ef3577
PH
232830. Exim went into a mad DNS loop when attempting to do a callout where the
2329 host was specified on an smtp transport, and looking it up yielded more
2330 than one IP address.
2331
5cb8cbc6
PH
233231. Re-factored the code for checking spool and log partition space into a
2333 function that finds that data and another that does the check. The former
2334 is then used to implement four new variables: $spool_space, $log_space,
2335 $spool_inodes, and $log_inodes.
2336
14702f5b
PH
233732. The RFC2047 encoding function was originally intended for short strings
2338 such as real names; it was not keeping to the 75-character limit for
2339 encoded words that the RFC imposes. It now respects the limit, and
2340 generates multiple encoded words if necessary. To be on the safe side, I
2341 have increased the buffer size for the ${rfc2047: expansion operator from
2342 1024 to 2048 bytes.
2343
063b1e99
PH
234433. It is now permitted to omit both strings after an "if" condition; if the
2345 condition is true, the result is "true". As before, when the second string
2346 is omitted, a false condition yields an empty string. This makes it less
2347 cumbersome to write custom ACL and router conditions.
2348
652e1b65
PH
234934. Failure to deliver a bounce message always caused it to be frozen, even if
2350 there was an errors_to setting on the router. The errors_to setting is now
2351 respected.
2352
6f0c9a4f
PH
235335. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2354 canonical form (fully expanded) before being placed in
2355 $sender_host_address.
2356
33397d19
PH
235736. The table in the code that translates DNS record types into text (T_A to
2358 "A" for instance) was missing entries for NS and CNAME. It is just possible
2359 that this could have caused confusion if both these types were looked up
2360 for the same domain, because the text type is used as part of Exim's
2361 per-process caching. But the chance of anyone hitting this buglet seems
2362 very small.
2363
7bb56e1f
PH
236437. The dnsdb lookup has been extended in a number of ways.
2365
2366 (1) There is a new type, "zns", which walks up the domain tree until it
2367 finds some nameserver records. It should be used with care.
2368
ea3bc19b
PH
2369 (2) There is a new type, "mxh", which is like "mx" except that it returns
2370 just the host names, not the priorities.
2371
2372 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2373 looked up. The behaviour when one of the lookups defers can be
2374 controlled by a keyword.
7bb56e1f 2375
ea3bc19b 2376 (4) It is now possible to specify the separator character for use when
7bb56e1f 2377 multiple records are returned.
33397d19 2378
0bcb2a0e
PH
237938. The dnslists ACL condition has been extended: it is now possible to supply
2380 a list of IP addresses and/or domains to be looked up in a particular DNS
2381 domain.
2382
2ac0e484
PH
238339. Added log_selector=+queue_time_overall.
2384
4e1fde53
PH
238540. When running the queue in the test harness, wait just a tad after forking a
2386 delivery process, to get repeatability of debugging output.
2387
de365ded
PH
238841. Include certificate and key file names in error message when GnuTLS fails
2389 to set them up, because the GnuTLS error message doesn't include the name
2390 of the failing file when there is a problem reading it.
2391
f05da2e8
PH
239242. Allow both -bf and -bF in the same test run.
2393
d6453af2
PH
239443. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2395
f7b63901
PH
239644. The "Exiscan patch" is now merged into the mainline Exim source.
2397
239845. Sometimes the final signoff response after QUIT could fail to get
2399 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2400 < 0 before doing a fflush(). This bug looks as though it goes back to the
2401 introduction of TLS in release 3.20, but "sometimes" must have been rare
2402 because the tests only now provoked it.
2403
a444213a
PH
240446. Reset the locale to "C" after calling embedded Perl, in case it was changed
2405 (this can affect the format of dates).
2406
0ec020ea
PH
240747. exim_tidydb, when checking for the continued existence of a message for
2408 which it has found a message-specific retry record, was not finding
2409 messages that were in split spool directories. Consequently, it was
2410 deleting retry records that should have stayed in existence.
2411
b1206957
PH
241248. Steve fixed some bugs in eximstats.
2413
241449. The SPA authentication driver was not abandoning authentication and moving
2415 on to the next authenticator when an expansion was forced to fail,
2416 contradicting the general specification for all authenticators. Instead it
2417 was generating a temporary error. It now behaves as specified.
2418
26dd5a95
PH
241950. The default ordering of permitted cipher suites for GnuTLS was pessimal
2420 (the order specifies the preference for clients). The order is now AES256,
2421 AES128, 3DES, ARCFOUR128.
2422
343b2385
PH
242351. Small patch to Sieve code - explicitly set From: when generating an
2424 autoreply.
2425
1c5466b9
PH
242652. Exim crashed if a remote delivery caused a very long error message to be
2427 recorded - for instance if somebody sent an entire SpamAssassin report back
2428 as a large number of 550 error lines. This bug was coincidentally fixed by
2429 increasing the size of one of Exim's internal buffers (big_buffer) that
2430 happened as part of the Exiscan merge. However, to be on the safe side, I
2431 have made the code more robust (and fixed the comments that describe what
2432 is going on).
2433
55ee9ee3
PH
243453. Now that there can be additional text after "Completed" in log lines (if
2435 the queue_time_overall log selector is set), a one-byte patch to exigrep
2436 was needed to allow it to recognize "Completed" as not the last thing in
2437 the line.
2438
d38f8232
PH
243954. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2440 patch that reportedly fixes this has been added. I am not expert enough to
2441 create a test for it. This is what the patch creator wrote:
2442
2443 "I found a little strange behaviour of ldap code when working with
2444 Windows 2003 AD Domain, where users was placed in more than one
2445 Organization Units. When I tried to give exim partial DN, the exit code
2446 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2447 But simultaneously result of request was absolutely normal ldap result,
2448 so I produce this patch..."
2449
3295e65b
PH
2450 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2451 REFERENCE, so I have modified the code to exclude the patch when that macro
2452 is not defined.
2453
7102e136
PH
245455. Some experimental protocols are using DNS PTR records for new purposes. The
2455 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2456 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2457 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2458 CAN-2005-0021
7102e136 2459
3ca0ba97
PH
246056. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2461
c2bcbe20
PH
246257. Double the size of the debug message buffer (to 2048) so that more of very
2463 long debug lines gets shown.
2464
18ce445d
PH
246558. The exicyclog utility now does better if the number of log files to keep
2466 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2467
1f5b4c3d
PH
246859. Two changes related to the smtp_active_hostname option:
2469
2470 (1) $smtp_active_hostname is now available as a variable.
2471 (2) The default for smtp_banner uses $smtp_active_hostname instead
2472 of $primary_hostname.
2473
b975ba52
PH
247460. The host_aton() function is supposed to be passed a string that is known
2475 to be a valid IP address. However, in the case of IPv6 addresses, it was
2476 not checking this. This is a hostage to fortune. Exim now panics and dies
2477 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2478 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2479 components; fortuitously, this particular loophole had already been fixed
2480 by change 4.50/55 above.
2481
2482 If there are any other similar loopholes, the new check in host_aton()
2483 itself should stop them being exploited. The report I received stated that
2484 data on the command line could provoke the exploit when Exim was running as
2485 exim, but did not say which command line option was involved. All I could
2486 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2487 running as the user.
ea3a6f44 2488 CAN-2005-0021
85b87bc2
PH
2489
249061. There was a buffer overflow vulnerability in the SPA authentication code
2491 (which came originally from the Samba project). I have added a test to the
2492 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2493 CAN-2005-0022
b975ba52 2494
17ffcae7
PH
249562. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2496 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2497
d95f9fdb
PH
249863. The daemon start-up calls getloadavg() while still root for those OS that
2499 need the first call to be done as root, but it missed one case: when
2500 deliver_queue_load_max is set with deliver_drop_privilege. This is
2501 necessary for the benefit of the queue runner, because there is no re-exec
2502 when deliver_drop_privilege is set.
2503
86b8287f
PH
250464. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2505 This has been fixed.
2506
60dc5e56
PH
250765. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2508 was in use, was not putting the data itself into the right store pool;
2509 consequently, it could be overwritten for a subsequent message in the same
2510 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2511 the caching.)
2512
533244af
PH
251366. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2514
a5a28604
PH
251567. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2516 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2517 the function were treating the return as a boolean value, which happened to
2518 work because 0=false and not-0=true, but is not correct code.
2519
7e634d24
PH
252068. The host_aton() function was not handling scoped IPv6 addresses (those
2521 with, for example, "%eth0" on the end) correctly.
2522
3e11c26b
PH
252369. Fixed some compiler warnings in acl.c for the bitmaps specified with
2524 negated items (that is, ~something) in unsigned ints. Some compilers
2525 apparently mutter when there is no cast.
2526
6729cf78
PH
252770. If an address verification called from an ACL failed, and did not produce a
2528 user-specific message (i.e. there was only a "system" message), nothing was
2529 put in $acl_verify_message. In this situation, it now puts the system
2530 message there.
2531
00f00ca5
PH
253271. Change 4.23/11 added synchronization checking at the start of an SMTP
2533 session; change 4.31/43 added the unwanted input to the log line - except
2534 that it did not do this in the start of session case. It now does.
2535
c9bdd01c
PH
253672. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2537 This is wrong and can cause the other end to generate a synchronization
2538 error if it is another Exim or anything else that does the synchronization
2539 check. A QUIT command is no longer sent after a timeout.
2540
d43194df
PH
254173. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2542 during host lookups.
2543
fe5b5d0b
PH
254474. The defer_ok option of callout verification was not working if it was used
2545 when verifying addresses in header lines, that is, for this case:
2546
2547 verify = header_sender/callout=defer_ok
2548
76a2d7ba
PH
254975. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2550 those file descriptors could be used for SMTP connections. If anything
2551 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2552 could be sent to the SMTP client, causing chaos. The daemon now opens
2553 stdin, stdout, and stderr to /dev/null when it puts itself into the
2554 background.
2555
255676. Arrange for output from Perl's "warn" command to be written to Exim's main
2557 log by default. The user can override this with suitable Perl magic.
2558
04f7d5b9
PH
255977. The use of log_message on a "discard" ACL verb, which is supposed to add to
2560 the log message when discard triggers, was not working for the DATA ACL or
2561 for the non-SMTP ACL.
2562
bc60667e
PH
256378. Error message wording change in sieve.c.
2564
bb6e88ff
PH
256579. If smtp_accept_max_per_host was set, the number of connections could be
2566 restricted to fewer than expected, because the daemon was trying to set up
2567 a new connection before checking whether the processes handling previous
2568 connections had finished. The check for completed processes is now done
2569 earlier. On busy systems, this bug wouldn't be noticed because something
2570 else would have woken the daemon, and it would have reaped the completed
2571 process earlier.
2572
1e70f85b
PH
257380. If a message was submitted locally by a user whose login name contained one
2574 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2575 It caused a spool format error. I have fixed the spool reading code. A
2576 related problem was that the "from" clause in the Received: line became
2577 illegal because of the space(s). It is now covered by ${quote_local_part.
2578
257981. Included the latest eximstats from Steve (adds average sizes to HTML Top
2580 tables).
2581
4e01f9d6
PH
258282. Updated OS/Makefile-AIX as per message from Mike Meredith.
2583
1ee1cef2
PH
258483. Patch from Sieve maintainer to fix unterminated string problem in
2585 "vacation" handling.
2586
6e2b4ccc
PH
258784. Some minor changes to the Linux configuration files to help with other
2588 OS variants using glibc.
2589
8e669ac1
PH
259085. One more patch for Sieve to update vacation handling to latest spec.
2591
495ae4b0 2592
bbe902f0
PH
2593----------------------------------------------------
2594See the note above about the 4.44 and 4.50 releases.
2595----------------------------------------------------
2596
2597
2598Exim version 4.44
2599-----------------
2600
2601 1. Change 4.43/35 introduced a bug that caused file counts to be
2602 incorrectly computed when quota_filecount was set in an appendfile
2603 transport
2604
2605 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2606 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2607 place.
2608
2609 3. Give more explanation in the error message when the command for a transport
2610 filter fails to execute.
2611
2612 4. There are several places where Exim runs a non-Exim command in a
2613 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2614 was being done only for the command run by the queryprogram router. It is
2615 now done for all such subprocesses. The other cases are: ${run, transport
2616 filters, and the commands run by the lmtp and pipe transports.
2617
2618 5. Some older OS have a limit of 256 on the maximum number of file
2619 descriptors. Exim was using setrlimit() to set 1000 as a large value
2620 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2621 systems. I've change it so that if it can't get 1000, it tries for 256.
2622
2623 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2624 was an oversight, and furthermore, ever since the addition of extra
2625 controls (e.g. 4.43/32), the checks on when to allow different forms of
2626 "control" were broken. There should now be diagnostics for all cases when a
2627 control that does not make sense is encountered.
2628
2629 7. $recipients is now available in the predata ACL (oversight).
2630
2631 8. Tidy the search cache before the fork to do a delivery from a message
2632 received from the command line. Otherwise the child will trigger a lookup
2633 failure and thereby defer the delivery if it tries to use (for example) a
2634 cached ldap connection that the parent has called unbind on.
2635
2636 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2637 of $address_data from the recipient verification was clobbered by the
2638 sender verification.
2639
264010. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2641 was its contents. (It was OK if the option was not defined at all.)
2642
264311. A "Completed" log line is now written for messages that are removed from
2644 the spool by the -Mrm option.
2645
264612. $host_address is now set to the target address during the checking of
2647 ignore_target_hosts.
2648
264913. When checking ignore_target_hosts for an ipliteral router, no host name was
2650 being passed; this would have caused $sender_host_name to have been used if
2651 matching the list had actually called for a host name (not very likely,
2652 since this list is usually IP addresses). A host name is now passed as
2653 "[x.x.x.x]".
2654
265514. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2656 code that specifies a non-restarting handler (typically sigaction() in
2657 modern systems) in an attempt to fix a rare and obscure crash bug.
2658
265915. Narrowed the window for a race in the daemon that could cause it to ignore
2660 SIGCHLD signals. This is not a major problem, because they are used only to
2661 wake it up if nothing else does.
2662
266316. A malformed maildirsize file could cause Exim to calculate negative values
2664 for the mailbox size or file count. Odd effects could occur as a result.
2665 The maildirsize information is now recalculated if the size or filecount
2666 end up negative.
2667
266817. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2669 support for a long time. Removed HAVE_SYS_VFS_H.
2670
ea3a6f44 267118. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2672
267319. Allow an empty sender to be matched against a lookup in an address list.
2674 Previously the only cases considered were a regular expression, or an
2675 empty pattern.
2676
267720. Exim went into a mad DNS lookup loop when doing a callout where the
2678 host was specified on the transport, if the DNS lookup yielded more than
2679 one IP address.
2680
ea3a6f44
NM
268121. The RFC2047 encoding function was originally intended for short strings
2682 such as real names; it was not keeping to the 75-character limit for
2683 encoded words that the RFC imposes. It now respects the limit, and
2684 generates multiple encoded words if necessary. To be on the safe side, I
2685 have increased the buffer size for the ${rfc2047: expansion operator from
2686 1024 to 2048 bytes.
bbe902f0 2687
ea3a6f44
NM
268822. Failure to deliver a bounce message always caused it to be frozen, even if
2689 there was an errors_to setting on the router. The errors_to setting is now
2690 respected.
bbe902f0
PH
2691
269223. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2693 canonical form (fully expanded) before being placed in
2694 $sender_host_address.
2695
269624. Updated eximstats to version 1.33
2697
ea3a6f44
NM
269825. Include certificate and key file names in error message when GnuTLS fails
2699 to set them up, because the GnuTLS error message doesn't include the name
2700 of the failing file when there is a problem reading it.
bbe902f0
PH
2701
270226. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2703 As per change 25.
bbe902f0 2704
ea3a6f44
NM
270527. Reset the locale to "C" after calling embedded Perl, in case it was changed
2706 (this can affect the format of dates).
bbe902f0 2707
ea3a6f44
NM
270828. exim_tidydb, when checking for the continued existence of a message for
2709 which it has found a message-specific retry record, was not finding
2710 messages that were in split spool directories. Consequently, it was
2711 deleting retry records that should have stayed in existence.
bbe902f0
PH
2712
271329. eximstats updated to version 1.35
2714 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2715 1.35 - bugfix such that pie charts by volume are generated correctly
2716
ea3a6f44
NM
271730. The SPA authentication driver was not abandoning authentication and moving
2718 on to the next authenticator when an expansion was forced to fail,
2719 contradicting the general specification for all authenticators. Instead it
2720 was generating a temporary error. It now behaves as specified.
bbe902f0 2721
ea3a6f44
NM
272231. The default ordering of permitted cipher suites for GnuTLS was pessimal
2723 (the order specifies the preference for clients). The order is now AES256,
2724 AES128, 3DES, ARCFOUR128.
bbe902f0 2725
ea3a6f44
NM
272631. Small patch to Sieve code - explicitly set From: when generating an
2727 autoreply.
bbe902f0 2728
ea3a6f44
NM
272932. Exim crashed if a remote delivery caused a very long error message to be
2730 recorded - for instance if somebody sent an entire SpamAssassin report back
2731 as a large number of 550 error lines. This bug was coincidentally fixed by
2732 increasing the size of one of Exim's internal buffers (big_buffer) that
2733 happened as part of the Exiscan merge. However, to be on the safe side, I
2734 have made the code more robust (and fixed the comments that describe what
2735 is going on).
bbe902f0 2736
ea3a6f44
NM
273733. Some experimental protocols are using DNS PTR records for new purposes. The
2738 keys for these records are domain names, not reversed IP addresses. The
2739 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2740 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2741 CAN-2005-0021
2742
ea3a6f44
NM
274334. The host_aton() function is supposed to be passed a string that is known
2744 to be a valid IP address. However, in the case of IPv6 addresses, it was
2745 not checking this. This is a hostage to fortune. Exim now panics and dies
2746 if the condition is not met. A case was found where this could be provoked
2747 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2748 components; fortuitously, this particular loophole had already been fixed
2749 by change 4.50/55 or 4.44/33 above.
2750
2751 If there are any other similar loopholes, the new check in host_aton()
2752 itself should stop them being exploited. The report I received stated that
2753 data on the command line could provoke the exploit when Exim was running as
2754 exim, but did not say which command line option was involved. All I could
2755 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2756 running as the user.
bbe902f0
PH
2757 CAN-2005-0021
2758
ea3a6f44
NM
275935. There was a buffer overflow vulnerability in the SPA authentication code
2760 (which came originally from the Samba project). I have added a test to the
2761 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2762 CAN-2005-0022
2763
ea3a6f44
NM
276436. The daemon start-up calls getloadavg() while still root for those OS that
2765 need the first call to be done as root, but it missed one case: when
2766 deliver_queue_load_max is set with deliver_drop_privilege. This is
2767 necessary for the benefit of the queue runner, because there is no re-exec
2768 when deliver_drop_privilege is set.
bbe902f0 2769
ea3a6f44
NM
277037. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2771 was in use, was not putting the data itself into the right store pool;
2772 consequently, it could be overwritten for a subsequent message in the same
2773 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2774 the caching.)
bbe902f0 2775
ea3a6f44
NM
277638. Sometimes the final signoff response after QUIT could fail to get
2777 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2778 < 0 before doing a fflush(). This bug looks as though it goes back to the
2779 introduction of TLS in release 3.20, but "sometimes" must have been rare
2780 because the tests only now provoked it.
bbe902f0
PH
2781
2782
495ae4b0
PH
2783Exim version 4.43
2784-----------------
2785
2786 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2787 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2788 Now it returns an integer. A number of calls were still expecting a T/F
2789 return. Fortuitously, in all cases, the tests worked in OK situations,
2790 which is the norm. However, things would have gone wrong on any write
2791 failures on the smtp file descriptor. This function is used when sending
2792 messages over SMTP and also when doing verify callouts.
2793
2794 2. When Exim is called to do synchronous delivery of a locally submitted
2795 message (the -odf or -odi options), it no longer closes stderr before doing
2796 the delivery.
2797
2798 3. Implemented the mua_wrapper option.
2799
2800 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2801
2802 5. Implemented the functions header_remove(), header_testname(),
2803 header_add_at_position(), and receive_remove_recipient(), and exported them
2804 to local_scan().
2805
2806 6. If an ACL "warn" statement specified the addition of headers, Exim already
2807 inserted X-ACL-Warn: at the start if there was no header name. However, it
2808 was not making this test for the second and subsequent header lines if
2809 there were newlines in the string. This meant that an invalid header could
2810 be inserted if Exim was badly configured.
2811
2812 7. Allow an ACL "warn" statement to add header lines at the start or after all
2813 the Received: headers, as well as at the end.
2814
2815 8. Added the rcpt_4xx retry error code.
2816
2817 9. Added postmaster_mailfrom=xxx to callout verification option.
2818
281910. Added mailfrom=xxxx to the callout verification option, for verify=
2820 header_sender only.
2821
282211. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2823 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2824
282512. Inserted some casts to stop certain compilers warning when using pointer
2826 differences as field lengths or precisions in printf-type calls (mostly
2827 affecting debugging statements).
2828
282913. Added optional readline() support for -be (dynamically loaded).
2830
283114. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2832 same clock tick as a message's arrival, so that its received time was the
2833 same as the "first fail" time on the retry record, and that message
2834 remained on the queue past the ultimate address timeout, every queue runner
2835 would try a delivery (because it was past the ultimate address timeout) but
2836 after another failure, the ultimate address timeout, which should have then
2837 bounced the address, did not kick in. This was a "< instead of <=" error;
2838 in most cases the first failure would have been in the next clock tick
2839 after the received time, and all would be well.
2840
284115. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2842 being recognized when the domain list was tested by the match_domain
2843 condition in an expansion string.
2844
284516. Added the ${str2b64: operator.
2846
284717. Exim was always calling setrlimit() to set a large limit for the number of
2848 processes, without checking whether the existing limit was already
2849 adequate. (It did check for the limit on file descriptors.) Furthermore,
2850 errors from getrlimit() and setrlimit() were being ignored. Now they are
2851 logged to the main and panic logs, but Exim does carry on, to try to do its
2852 job under whatever limits there are.
2853
285418. Imported PCRE 5.0.
2855
285619. Trivial typo in log message " temporarily refused connection" (the leading
2857 space).
2858
285920. If the log selector return_path_on_delivery was set and an address was
2860 redirected to /dev/null, the delivery process crashed because it assumed
2861 that a return path would always be set for a "successful" delivery. In this
2862 case, the whole delivery is bypassed as an optimization, and therefore no
2863 return path is set.
2864
286521. Internal re-arrangement: the function for sending a challenge and reading
2866 a response while authentication was assuming a zero-terminated challenge
2867 string. It's now changed to take a pointer and a length, to allow for
2868 binary data in such strings.
2869
287022. Added the cyrus_sasl authenticator (code supplied by MBM).
2871
287223. Exim was not respecting finduser_retries when seeking the login of the
2873 uid under which it was called; it was always trying 10 times. (The default
2874 setting of finduser_retries is zero.) Also, it was sleeping after the final
2875 failure, which is pointless.
2876
287724. Implemented tls_on_connect_ports.
2878
287925. Implemented acl_smtp_predata.
2880
288126. If the domain in control=submission is set empty, Exim assumes that the
2882 authenticated id is a complete email address when it generates From: or
2883 Sender: header lines.
2884
288527. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2886 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2887 chown and chgrp in /bin and hostname in /usr/bin.
2888
288928. Exim was keeping the "process log" file open after each use, just as it
2890 does for the main log. This opens the possibility of it remaining open for
2891 long periods when the USR1 signal hits a daemon. Occasional processlog
2892 errors were reported, that could have been caused by this. Anyway, it seems
2893 much more sensible not to leave this file open at all, so that is what now
2894 happens.
2895
289629. The long-running daemon process does not normally write to the log once it
2897 has entered its main loop, and it closes the log before doing so. This is
2898 so that log files can straightforwardly be renamed and moved. However,
2899 there are a couple of unusual error situations where the daemon does write
2900 log entries, and I had neglected to close the log afterwards.
2901
290230. The text of an SMTP error response that was received during a remote
2903 delivery was being truncated at 512 bytes. This is too short for some of
2904 the long messages that one sometimes sees. I've increased the limit to
2905 1024.
2906
290731. It is now possible to make retry rules that apply only when a message has a
2908 specific sender, in particular, an empty sender.
2909
291032. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2911 it possible to be selective about when SMTP synchronization is enforced.
2912
291333. Added "control = caseful_local_part" and "control = "caselower_local_part".
2914
291532. Implemented hosts_connection_nolog.
2916
291733. Added an ACL for QUIT.
2918
291934. Setting "delay_warning=" to disable warnings was not working; it gave a
2920 syntax error.
2921
292235. Added mailbox_size and mailbox_filecount to appendfile.
2923
292436. Added control = no_multiline_responses to ACLs.
2925
292637. There was a bug in the logic of the code that waits for the clock to tick
2927 in the case where the clock went backwards by a substantial amount such
2928 that the microsecond fraction of "now" was more than the microsecond
2929 fraction of "then" (but the whole seconds number was less).
2930
293138. Added support for the libradius Radius client library this is found on
2932 FreeBSD (previously only the radiusclient library was supported).
2933
2934
2935Exim version 4.42
2936-----------------
2937
2938 1. When certain lookups returned multiple values in the form name=value, the
2939 quoting of the values was not always being done properly. Specifically:
2940 (a) If the value started with a double quote, but contained no whitespace,
2941 it was not quoted.
2942 (b) If the value contained whitespace other than a space character (i.e.
2943 tabs or newlines or carriage returns) it was not quoted.
2944 This fix has been applied to the mysql and pgsql lookups by writing a
2945 separate quoting function and calling it from the lookup code. The fix
2946 should probably also be applied to nisplus, ibase and oracle lookups, but
2947 since I cannot test any of those, I have not disturbed their existing code.
2948
2949 2. A hit in the callout cache for a specific address caused a log line with no
2950 reason for rejecting RCPT. Now it says "Previous (cached) callout
2951 verification failure".
2952
2953 3. There was an off-by-one bug in the queryprogram router. An over-long
2954 return line was truncated at 256 instead of 255 characters, thereby
2955 overflowing its buffer with the terminating zero. As well as fixing this, I
2956 have increased the buffer size to 1024 (and made a note to document this).
2957
2958 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2959 when Exim is waiting for an SMTP response from a remote server, Exim
2960 restarts its select() call on the socket, thereby resetting its timeout.
2961 This is not a problem when such interrupts are rare. Somebody set up a cron
2962 job to run exiwhat every 2 minutes, which is less than the normal select()
2963 timeout (5 or 10 minutes). This meant that the select() timeout never
2964 kicked in because it was always reset. I have fixed this by comparing the
2965 time when an interrupt arrives with the time at the start of the first call
2966 to select(). If more time than the timeout has elapsed, the interrupt is
2967 treated as a timeout.
2968
2969 5. Some internal re-factoring in preparation for the addition of Sieve
2970 extensions (by MH). In particular, the "personal" test is moved to a
2971 separate function, and given an option for scanning Cc: and Bcc: (which is
2972 not set for Exim filters).
2973
2974 6. When Exim created an email address using the login of the caller as the
2975 local part (e.g. when creating a From: or Sender: header line), it was not
2976 quoting the local part when it contained special characters such as @.
2977
2978 7. Installed new OpenBSD configuration files.
2979
2980 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2981 try to make them clearer.
2982
2983 9. Callout options, other than the timeout value, were being ignored when
2984 verifying sender addresses in header lines. For example, when using
2985
2986 verify = header_sender/callout=no_cache
2987
2988 the cache was (incorrectly) being used.
2989
299010. Added a missing instance of ${EXE} to the exim_install script; this affects
2991 only the Cygwin environment.
2992
299311. When return_path_on_delivery was set as a log selector, if different remote
2994 addresses in the same message used different return paths and parallel
2995 remote delivery occurred, the wrong values would sometimes be logged.
2996 (Whenever a remote delivery process finished, the return path value from
2997 the most recently started remote delivery process was logged.)
2998
299912. RFC 3848 specifies standard names for the "with" phrase in Received: header
3000 lines when AUTH and/or TLS are in use. This is the "received protocol"
3001 field. Exim used to use "asmtp" for authenticated SMTP, without any
3002 indication (in the protocol name) for TLS use. Now it follows the RFC and
3003 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3004 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3005 names appear in log lines as well as in Received: header lines.
3006
300713. Installed MH's patches for Sieve to add the "copy" and "vacation"
3008 extensions, and comparison tests, and to fix some bugs.
3009
301014. Changes to the "personal" filter test:
3011
3012 (1) The test was buggy in that it was just doing the equivalent of
3013 "contains" tests on header lines. For example, if a user's address was
3014 anne@some.where, the "personal" test would incorrectly be true for
3015
3016 To: susanne@some.where
3017
3018 This test is now done by extracting each address from the header in turn,
3019 and checking the entire address. Other tests that are part of "personal"
3020 are now done using regular expressions (for example, to check local parts
3021 of addresses in From: header lines).
3022
3023 (2) The list of non-personal local parts in From: addresses has been
3024 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3025 taken from the Sieve specification recommendations.
3026
3027 (3) If the message contains any header line starting with "List-" it is
3028 treated as non-personal.
3029
3030 (4) The test for "circular" in the Subject: header line has been removed
3031 because it now seems ill-conceived.
3032
303315. Minor typos in src/EDITME comments corrected.
3034
303516. Installed latest exipick from John Jetmore.
3036
303717. If headers_add on a router specified a text string that was too long for
3038 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3039 of string_sprintf() is now avoided.
3040
304118. $message_body_size was not set (it was always zero) when running the DATA
3042 ACL and the local_scan() function.
3043
304419. For the "mail" command in an Exim filter, no default was being set for
3045 the once_repeat time, causing a random time value to be used if "once" was
3046 specified. (If the value happened to be <= 0, no repeat happened.) The
3047 default is now 0s, meaning "never repeat". The "vacation" command was OK
3048 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3049 (I found it when inspecting the code).
3050
305120. There is now an overall timeout for performing a callout verification. It
3052 defaults to 4 times the callout timeout, which applies to individual SMTP
3053 commands during the callout. The overall timeout applies when there is more
3054 than one host that can be tried. The timeout is checked before trying the
3055 next host. This prevents very long delays if there are a large number of
3056 hosts and all are timing out (e.g. when the network connections are timing
3057 out). The value of the overall timeout can be changed by specifying an
3058 additional sub-option for "callout", called "maxwait". For example:
3059
3060 verify = sender/callout=5s,maxwait=20s
3061
306221. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3063 to the end before writing, but this should make it even safer).
3064
306522. Exim was forgetting that it had advertised PIPELINING for the second and
3066 subsequent messages on an SMTP connection. It was also not resetting its
3067 memory on STARTTLS and an internal HELO.
3068
306923. When Exim logs an SMTP synchronization error within a session, it now
3070 records whether PIPELINING has been advertised or not.
3071
307224. Added 3 instances of "(long int)" casts to time_t variables that were being
3073 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3074 rather than long int.
3075
307625. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3077
307826. Added the never_mail option to autoreply.
3079
3080
3081Exim version 4.41
3082-----------------
3083
3084 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3085 crash if the getsockname() call failed; this can happen if a connection is
3086 closed very soon after it is established. The problem was simply in the
3087 order in which certain operations were done, causing Exim to try to write
3088 to the SMTP stream before it had set up the file descriptor. The bug has
3089 been fixed by making things happen in the correct order.
3090
3091
3092Exim version 4.40
3093-----------------
3094
3095 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3096 before the connection was closed, thus losing the rejection response.
3097
3098 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3099 some early Solaris releases, but causes trouble in current releases where
3100 socklen_t is defined.
3101
3102 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3103 always exist.
3104
3105 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3106 configured.
3107
3108 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3109 that releasing the top of it at the end releases what was used for sub-
3110 expansions (unless the block got too big). However, discard this block if
3111 the first thing is a variable or header, so that we can use its block when
3112 it is dynamic (useful for very large $message_headers, for example).
3113
3114 6. Lookups now cache *every* query, not just the most recent. A new, separate
3115 store pool is used for this. It can be recovered when all lookup caches are
3116 flushed. Lookups now release memory at the end of their result strings.
3117 This has involved some general refactoring of the lookup sources.
3118
3119 7. Some code has been added to the store_xxx() functions to reduce the amount
3120 of flapping under certain conditions.
3121
3122 8. log_incoming_interface used to affect only the <= reception log lines. Now
3123 it causes the local interface and port to be added to several more SMTP log
3124 lines, for example "SMTP connection from", and rejection lines.
3125
3126 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3127
312810. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3129
313011. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3131 could be overwritten at the end of the current message (or the start of a
3132 new message if it was set in a HELO ACL). The value is now preserved for
3133 the duration of the SMTP connection.
3134
313512. If a transport had a headers_rewrite setting, and a matching header line
3136 contained an unqualified address, that address was qualified, even if it
3137 did not match any rewriting rules. The underlying bug was that the values
3138 of the flags that permit the existence of unqualified sender and recipient
3139 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3140 non-local messages, and by -bnq for local messages) were not being
3141 preserved with the message after it was received.
3142
314313. When Exim was logging an SMTP synchronization error, it could sometimes log
3144 "next input=" as part of the text comprising the host identity instead of
3145 the correct text. The code was using the same buffer for two different
3146 strings. However, depending on which order the printing function evaluated
3147 its arguments, the bug did not always show up. Under Linux, for example, my
3148 test suite worked just fine.
3149
315014. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3151 doesn't work with some older versions of Perl. It has been changed to "my",
3152 which in any case is probably the better facility to use.
3153
315415. A really picky compiler found some instances of statements for creating
3155 error messages that either had too many or two few arguments for the format
3156 string.
3157
315816. The size of the buffer for calls to the DNS resolver has been increased
3159 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3160 for addresses that have a lot of PTR records. This alleviates a problem; it
3161 does not fully solve it.
3162
316317. A dnsdb lookup for PTR records that receives more data than will fit in the
3164 buffer now truncates the list and logs the incident, which is the same
3165 action as happens when Exim is looking up a host name and its aliases.
3166 Previously in this situation something unpredictable would happen;
3167 sometimes it was "internal error: store_reset failed".
3168
316918. If a server dropped the connection unexpectedly when an Exim client was
3170 using GnuTLS and trying to read a response, the client delivery process
3171 crashed while trying to generate an error log message.
3172
317319. If a "warn" verb in an ACL added multiple headers to a message in a single
3174 string, for example:
3175
3176 warn message = H1: something\nH2: something
3177
3178 the text was added as a single header line from Exim's point of view
3179 though it ended up OK in the delivered message. However, searching for the
3180 second and subsequent header lines using $h_h2: did not work. This has been
3181 fixed. Similarly, if a system filter added multiple headers in this way,
3182 the routers could not see them.
3183
318420. Expanded the error message when iplsearch is called with an invalid key to
3185 suggest using net-iplsearch in a host list.
3186
318721. When running tests using -bh, any delays imposed by "delay" modifiers in
3188 ACLs are no longer actually imposed (and a message to that effect is
3189 output).
3190
319122. If a "gecos" field in a passwd entry contained escaped characters, in
3192 particular, if it contained a \" sequence, Exim got it wrong when building
3193 a From: or a Sender: header from that name. A second bug also caused
3194 incorrect handling when an unquoted " was present following a character
3195 that needed quoting.
3196
319723. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3198 was not being matched caselessly.
3199
320024. Arranged for all hyphens in the exim.8 source to be escaped with
3201 backslashes.
3202
320325. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3204 properly. Recipient callout cache records were still being keyed to include
3205 the sender, even when use_sender was set false. This led to far more
3206 callouts that were necessary. The sender is no longer included in the key
3207 when use_sender is false.
3208
320926. Added "control = submission" modifier to ACLs.
3210
321127. Added the ${base62d: operator to decode base 62 numbers.
3212
321328. dnsdb lookups can now access SRV records.
3214
321529. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3216 the configuration file.
3217
321830. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3219 (-v) mode. This makes the output for a verbose queue run more intelligible.
3220
322131. Added a use_postmaster feature to recipient callouts.
3222
322332. Added the $body_zerocount variable, containing the number of binary zero
3224 bytes in the message body.
3225
322633. The time of last modification of the "new" subdirectory is now used as the
3227 "mailbox time last read" when there is a quota error for a maildir
3228 delivery.
3229
323034. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3231
323235. Added +ignore_unknown as a special item in host lists.
3233
323436. Code for decoding IPv6 addresses in host lists is now included, even if
3235 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3236 address was recognized as an IP address, but was then not correctly decoded
3237 into binary, causing unexpected and incorrect effects when compared with
3238 another IP address.
3239
3240
3241Exim version 4.34
3242-----------------
3243
3244 1. Very minor rewording of debugging text in manualroute to say "list of
3245 hosts" instead of "hostlist".
3246
3247 2. If verify=header_syntax was set, and a header line with an unqualified
3248 address (no domain) and a large number of spaces between the end of the
3249 name and the colon was received, the reception process suffered a buffer
3250 overflow, and (when I tested it) crashed. This was caused by some obsolete
3251 code that should have been removed. The fix is to remove it!
3252
3253 3. When running in the test harness, delay a bit after writing a bounce
3254 message to get a bit more predictability in the log output.
3255
3256 4. Added a call to search_tidyup() just before forking a reception process. In
3257 theory, someone could use a lookup in the expansion of smtp_accept_max_
3258 per_host which, without the tidyup, could leave open a database connection.
3259
3260 5. Added the variables $recipient_data and $sender_data which get set from a
3261 lookup success in an ACL "recipients" or "senders" condition, or a router
3262 "senders" option, similar to $domain_data and $local_part_data.
3263
3264 6. Moved the writing of debug_print from before to after the "senders" test
3265 for routers.
3266
3267 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3268 problems for message scanning, either using a data ACL, or using
3269 local_scan() because the Received: header was not generated till after they
3270 were called (in order to set the time as the time of reception completion).
3271 I have revised the way this works. The header is now generated after the
3272 body is received, but before the ACL or local_scan() are called. After they
3273 are run, the timestamp in the header is updated.
3274
3275
3276Exim version 4.33
3277-----------------
3278
3279 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3280 before starting a queue runner without re-exec. This happened only when
3281 deliver_drop_privilege was set or when the Exim user was set to root. The
3282 effect of the bug was that timeouts during subsequent deliveries caused
3283 crashes instead of being properly handled. The handler is now left at its
3284 default (and expected) setting.
3285
3286 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3287 message, again when deliver_drop_privilege is set or Exim is run as root.
3288 The bug described in (1) was not present in this case, but the tidying up
3289 of the other signals was missing. I have made the two cases consistent.
3290
3291 3. The ignore_target_hosts setting on a manualroute router was being ignored
3292 for hosts that were looked up using the /MX notation.
3293
3294 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3295 in domain lists.
3296
3297 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3298 operated on the sender address. After changing the $sender_address to <>
3299 for the sender address verify, Exim was re-instated it as the original
3300 (before rewriting) address, but remembering that it had rewritten it, so it
3301 wasn't rewriting it again. This bug also had the effect of breaking the
3302 sender address verification caching when the sender address was rewritten.
3303
3304 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3305 This has been changed so that if the ip literal address matches
3306 ignore_target_hosts, the router declines.
3307
3308 7. Added expansion conditions match_domain, match_address, and match_local_
3309 part (NOT match_host).
3310
3311 8. The placeholder for the Received: header didn't have a length field set.
3312
3313 9. Added code to Exim itself and to exim_lock to test for a specific race
3314 condition that could lead to file corruption when using MBX delivery. The
3315 issue is with the lockfile that is created in /tmp. If this file is removed
3316 after a process has opened it but before that process has acquired a lock,
3317 there is the potential for a second process to recreate the file and also
3318 acquire a lock. This could lead to two Exim processes writing to the file
3319 at the same time. The added code performs the same test as UW imapd; it
3320 checks after acquiring the lock that its file descriptor still refers to
3321 the same named file.
3322
332310. The buffer for building added header lines was of fixed size, 8192 bytes.
3324 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3325 when Exim is built.
3326
332711. Added the smtp_active_hostname option. If used, this will typically be made
3328 to depend on the incoming interface address. Because $interface_address is
3329 not set up until the daemon has forked a reception process, error responses
3330 that can happen earlier (such as "too many connections") no longer contain
3331 a host name.
3332
333312. If an expansion in a condition on a "warn" statement fails because a lookup
3334 defers, the "warn" statement is abandoned, and the next ACL statement is
3335 processed. Previously this caused the whole ACL to be aborted.
3336
333713. Added the iplsearch lookup type.
3338
333914. Added ident_timeout as a log selector.
3340
334115. Added tls_certificate_verified as a log selector.
3342
334316. Added a global option tls_require_ciphers (compare the smtp transport
3344 option of the same name). This controls incoming TLS connections.
3345
334617. I finally figured out how to make tls_require_ciphers do a similar thing
3347 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3348 before starting the TLS session.
3349
335018. Tabs are now shown as \t in -bP output.
3351
335219. If the log selector return_path_on_delivery was set, Exim crashed when
3353 bouncing a message because it had too many Received: header lines.
3354
335520. If two routers both had headers_remove settings, and the first one included
3356 a superfluous trailing colon, the final name in the first list and the
3357 first name in the second list were incorrectly joined into one item (with a
3358 colon in the middle).
3359
3360
3361Exim version 4.32
3362-----------------
3363
3364 1. Added -C and -D options to the exinext utility, mainly to make it easier
3365 to include in the automated testing, but these could be helpful when
3366 multiple configurations are in use.
3367
3368 2. The exinext utility was not formatting the output nicely when there was
3369 an alternate port involved in the retry record key, nor when there was a
3370 message id as well (for retries that were specific to a specific message
3371 and a specific host). It was also confused by IPv6 addresses, because of
3372 the additional colons they contain. I have fixed the IPv4 problem, and
3373 patched it up to do a reasonable job for IPv6.
3374
3375 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3376 delivery, the log line now contains "pipelined" if PIPELINING was used.
3377
3378 4. An SMTP transport process used to panic and die if the bind() call to set
3379 an explicit outgoing interface failed. This has been changed; it is now
3380 treated in the same way as a connect() failure.
3381
3382 5. A reference to $sender_host_name in the part of a conditional expansion
3383 that was being skipped was still causing a DNS lookup. This no longer
3384 occurs.
3385
3386 6. The def: expansion condition was not recognizing references to header lines
3387 that used bh_ and bheader_.
3388
3389 7. Added the _cache feature to named lists.
3390
3391 8. The code for checking quota_filecount in the appendfile transport was
3392 allowing one more file than it should have been.
3393
3394 9. For compatibility with Sendmail, the command line option
3395
3396 -prval:sval
3397
3398 is equivalent to
3399
3400 -oMr rval -oMs sval
3401
3402 and sets the incoming protocol and host name (for trusted callers). The
3403 host name and its colon can be omitted when only the protocol is to be set.
3404 Note the Exim already has two private options, -pd and -ps, that refer to
3405 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3406 "s", but I don't think that's a major issue.
3407
340810. A number of refactoring changes to the code, none of which should affect
3409 Exim's behaviour:
3410
3411 (a) The number of logging options was getting close to filling up the
3412 32-bit word that was used as a bit map. I have split them into two classes:
3413 those that are passed in the argument to log_write(), and those that are
3414 only ever tested independently outside of that function. These are now in
3415 separate 32-bit words, so there is plenty of room for expansion again.
3416 There is no change in the user interface or the logging behaviour.
3417
3418 (b) When building, for example, log lines, the code previously used a
3419 macro that called string_cat() twice, in order to add two strings. This is
3420 not really sufficiently general. Furthermore, there was one instance where
3421 it was actually wrong because one of the argument was used twice, and in
3422 one call a function was used. (As it happened, calling the function twice
3423 did not affect the overall behaviour.) The macro has been replaced by a
3424 function that can join an arbitrary number of extra strings onto a growing
3425 string.
3426
3427 (c) The code for expansion conditions now uses a table and a binary chop
3428 instead of a serial search (which was left over from when there were very
3429 few conditions). Also, it now recognizes conditions like "pam" even when
3430 the relevant support is not compiled in: a suitably worded error message is
3431 given if an attempt is made to use such a condition.
3432
343311. Added ${time_interval:xxxxx}.
3434
343512. A bug was causing one of the ddress fields not to be passed back correctly
3436 from remote delivery subprocesses. The field in question was not being
3437 subsequently used, so this caused to problems in practice.
3438
343913. Added new log selectors queue_time and deliver_time.
3440
344114. Might have fixed a bug in maildirsizefile handling that threw up
3442 "unexpected character" debug warnings, and recalculated the data
3443 unnecessarily. In any case, I expanded the warning message to give more
3444 information.
3445
344615. Added the message "Restricted characters in address" to the statements in
3447 the default ACL that block characters like @ and % in local parts.
3448
344916. Change 71 for release 4.31 proved to be much less benign that I imagined.
3450 Three changes have been made:
3451
3452 (a) There was a serious bug; a negative response to MAIL caused the whole
3453 recipient domain to be cached as invalid, thereby blocking all messages
3454 to all local parts at the same domain, from all senders. This bug has
3455 been fixed. The domain is no longer cached after a negative response to
3456 MAIL if the sender used is not empty.
3457
3458 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3459 been restored.
3460
3461 (c) A new callout option, "use_sender" has been added for people who want
3462 the modified behaviour.
3463
3464
3465Exim version 4.31
3466-----------------
3467
3468 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3469 Larry Rosenman.
3470
3471 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3472 indeed breaks things for older releases.
3473
3474 3. Added additional logging to the case where there is a problem reading data
3475 from a filter that is running in a subprocess using a pipe, in order to
3476 try to track down a specific problem.
3477
3478 4. Testing facility fudge: when running in the test harness and attempting
3479 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3480 getting "No route to host". Convert this to a timeout.
3481
3482 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3483 warning.
3484
3485 6. Some OS don't have socklen_t but use size_t instead. This affects the
3486 fifth argument of getsockopt() amongst other things. This is now
3487 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3488 can be set for individual OS. I have set it for SunOS5, OSF1, and
3489 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3490 some earlier ones do not.
3491
3492 7. Change 4.30/15 was not doing the test caselessly.
3493
3494 8. The standard form for an IPv6 address literal was being rejected by address
3495 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3496 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3497 this, as well as the form without the "IPv6" on the front (but only when
3498 address literals are enabled, of course).
3499
3500 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3501
350210. Exim crashed if a message with an empty sender address specified by -f
3503 encountered a router with an errors_to setting. This could be provoked only
3504 by a command such as
3505
3506 exim -f "" ...
3507
3508 where an empty string was supplied; "<>" did not hit this bug.
3509
351011. Installed PCRE release 4.5.
3511
351212. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3513 remained set. It is now erased.
3514
351513. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3516 times from message ids (which are base 36 rather than the normal 62).
3517
351814. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3519 were being counted as actual protocol errors, and logged if the log
3520 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3521 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3522 and DATA following a set of rejected RCPTs do not count as protocol errors.
3523 In other words, Exim assumes they were pipelined, though this may not
3524 actually be the case. Of course, in all cases the client gets an
3525 appropriate error code.
3526
352715. If a lookup fails in an ACL condition, a message about the failure may
3528 be available; it is used if testing the ACL cannot continue, because most
3529 such messages specify what the cause of the deferral is. However, some
3530 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3531 that caused an old message to be retained and used if a later statement
3532 caused a defer, replacing the real cause of the deferral.
3533
353416. If an IP address had so many PTR records that the DNS lookup buffer
3535 was not large enough to hold them, Exim could crash while trying to process
3536 the truncated data. It now detects and logs this case.
3537
353817. Further to 4.21/58, another change has been made: if (and only if) the
3539 first line of a message (the first header line) ends with CRLF, a bare LF
3540 in a subsequent header line has a space inserted after it, so as not to
3541 terminate the header.
3542
354318. Refactoring: tidied an ugly bit of code in appendfile that copied data
3544 unnecessarily, used atoi() instead of strtol(), and didn't check the
3545 termination when getting file sizes from file names by regex.
3546
354719. Completely re-implemented the support for maildirsize files, in the light
3548 of a number of problems with the previous contributed implementation
3549 (4.30/29). In particular:
3550
3551 . If the quota is zero, the maildirsize file is maintained, but no quota is
3552 imposed.
3553
3554 . If the maildir directory does not exist, it is created before any attempt
3555 to write a maildirsize file.
3556
3557 . The quota value in the file is just a cache; if the quota is changed in
3558 the transport, the new value overrides.
3559
3560 . A regular expression is available for exclud