Add "server=" feature to MySQL and PostgreSQL lookups.
[exim.git] / doc / doc-txt / ChangeLog
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b7670459 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.526 2007/08/23 10:16:51 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
b7670459
PH
95PH/11 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
96 and InterBase are left for another time.)
97
eb4c0de6 98
b4ed4da0
PH
99Exim version 4.67
100-----------------
101
22ad45c9
MH
102MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
103 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
104 Jan Srzednicki.
105
b4ed4da0
PH
106PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
107 issue a MAIL command.
108
431b7361
PH
109PH/02 In an ACL statement such as
110
111 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
112
113 if a client was not listed at all, or was listed with a value other than
114 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
115 the condition was not true (as it should be), so access was not denied.
116 The bug was that the ! inversion was incorrectly passed on to the second
117 item. This has been fixed.
118
119PH/03 Added additional dnslists conditions == and =& which are different from
120 = and & when the dns lookup returns more than one IP address.
121
83da1223
PH
122PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
123 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
124
54fc8428
PH
125PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
126 FSYNC, which compiles an option called disable_fsync that allows for
127 bypassing fsync(). The documentation is heavily laced with warnings.
128
34c5e8dd
SC
129SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
130
bbe15da8
PH
131PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
132 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
133 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
134 including adding "make clean"; (3) Added -fPIC when compiling the test
135 dynamically loaded module, to get rid of a warning.
136
0e8a9471
MH
137MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
138 message fails, move_frozen_messages = true and ignore_bounce_errors_after
139 = 0s. The bug is otherwise harmless.
140
f0872424
PH
141PH/07 There was a bug in the dovecot authenticator such that the value of
142 $auth1 could be overwritten, and so not correctly preserved, after a
143 successful authentication. This usually meant that the value preserved by
144 the server_setid option was incorrect.
145
b01dd148
PH
146PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
147
6bf342e1
PH
148PH/09 Installed PCRE release 7.0.
149
273f34d0
PH
150PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
151 run for batched SMTP input. It is now run at the start of every message
152 in the batch. While fixing this I discovered that the process information
153 (output by running exiwhat) was not always getting set for -bs and -bS
154 input. This is fixed, and it now also says "batched" for BSMTP.
155
cf8b11a5
PH
156PH/11 Added control=no_pipelining.
157
41c7c167
PH
158PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
159 patch, slightly modified), and move the expansion of helo_data till after
160 the connection is made in the smtp transport (so it can use these
161 values).
162
9c57cbc0
PH
163PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
164
f3f065bb
PH
165PH/14 Added log_selector = +pid.
166
047bdd8c
PH
167PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
168
0ce9abe6
PH
169PH/16 Add ${if forany and ${if forall.
170
0e22dfd1
PH
171PH/17 Added dsn_from option to vary the From: line in DSNs.
172
4c590bd1
PH
173PH/18 Flush SMTP output before performing a callout, unless control =
174 no_callout_flush is set.
175
09945f1e
PH
176PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
177 was true (the default) a successful delivery failed to delete the retry
178 item, thus causing premature timeout of the address. The bug is now
179 fixed.
180
c51b8e75
PH
181PH/20 Added hosts_avoid_pipelining to the smtp transport.
182
e28326d8
PH
183PH/21 Long custom messages for fakedefer and fakereject are now split up
184 into multiline reponses in the same way that messages for "deny" and
185 other ACL rejections are.
186
75b1493f
PH
187PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
188 with slight modification.
189
7c5214ec
PH
190PH/23 Applied sieve patches from the maintainer "tracking the latest notify
191 draft, changing the syntax and factoring some duplicate code".
192
4311097e
PH
193PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
194 for deliveries of the second and subsequent messages over the same SMTP
195 connection.
196
29f89cad
PH
197PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
198 ${reduce, with only minor "tidies".
199
5e687460
SC
200SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
201
c3611384
PH
202PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
203 expansion side effects.
204
5a11a7b4
PH
205PH/27 When a message times out after an over-quota error from an Exim-imposed
206 quota, the bounce message says "mailbox is full". This message was not
207 being given when it was a system quota that was exceeded. It now should
208 be the same.
209
0e20aff9
MH
210MH/03 Made $recipients available in local_scan(). local_scan() already has
211 better access to the recipient list through recipients_list[], but
212 $recipients can be useful in postmaster-provided expansion strings.
213
ca86f471
PH
214PH/28 The $smtp_command and $smtp_command_argument variables were not correct
215 in the case of a MAIL command with additional options following the
216 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
217 were accidentally chopped off.
218
a14e5636
PH
219PH/29 SMTP synchronization checks are implemented when a command is read -
220 there is a check that no more input is waiting when there shouldn't be
221 any. However, for some commands, a delay in an ACL can mean that it is
222 some time before the response is written. In this time, more input might
223 arrive, invalidly. So now there are extra checks after an ACL has run for
224 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
225 pipelining has not been advertised.
226
ec95d1a6
PH
227PH/30 MH's patch to allow iscntrl() characters to be list separators.
228
42855d71
PH
229PH/31 Unlike :fail:, a custom message specified with :defer: was not being
230 returned in the SMTP response when smtp_return_error_details was false.
231 This has been fixed.
232
57c2c631
PH
233PH/32 Change the Dovecot authenticator to use read() and write() on the socket
234 instead of the C I/O that was originally supplied, because problems were
235 reported on Solaris.
236
58c01c94
PH
237PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
238 Exim which did not show up earlier: it was assuming that a call to
239 SSL_CTX_set_info_callback() might give an error value. In fact, there is
240 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
241 was a macro that became an assignment, so it seemed to work. This has
242 changed to a proper function call with a void return, hence the compile
243 error. Exim's code has been fixed.
244
dee5a20a
PH
245PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
246 cpus.
247
d2ee6114
PH
248PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
249
b2d5182b
PH
250PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
251
79749a79
PH
252PH/37 If a message is not accepted after it has had an id assigned (e.g.
253 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
254 "Completed" line in the log. When some messages of this type were
255 selected by exigrep, they were listed as "not completed". Others were
256 picked up by some special patterns. I have improved the selection
257 criteria to be more general.
79749a79 258
c456d9bb
PH
259PH/38 The host_find_failed option in the manualroute router can now be set
260 to "ignore", to completely ignore a host whose IP address cannot be
261 found. If all hosts are ignored, the behaviour is controlled by the new
262 host_all_ignored option.
263
cd9868ec
PH
264PH/39 In a list of hosts for manualroute, if one item (either because of multi-
265 homing or because of multiple MX records with /mx) generated more than
266 one IP address, and the following item turned out to be the local host,
267 all the secondary addresses of the first item were incorrectly removed
268 from the list, along with the local host and any following hosts (which
269 is what is supposed to happen).
270
ebeaf996
PH
271PH/40 When Exim receives a message, it writes the login name, uid, and gid of
272 whoever called Exim into the -H file. In the case of the daemon it was
273 behaving confusingly. When first started, it used values for whoever
274 started the daemon, but after a SIGHUP it used the Exim user (because it
275 calls itself on a restart). I have changed the code so that it now always
276 uses the Exim user.
277
2679d413
PH
278PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
279 message are rejected with the same error (e.g. no authentication or bad
280 sender address), and a DATA command is nevertheless sent (as can happen
281 with PIPELINING or a stupid MUA), the error message that was given to the
282 RCPT commands is included in the rejection of the DATA command. This is
283 intended to be helpful for MUAs that show only the final error to their
284 users.
285
84024b72
PH
286PH/42 Another patch from the Sieve maintainer.
287
8005d38e
SC
288SC/02 Eximstats - Differentiate between permanent and temporary rejects.
289 Eximstats - Fixed some broken HTML links and added missing column headers
290 (Jez Hancock).
291 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
292 columns for Rejects, Temp Rejects, Ham, and Spam rows.
293
3298c6c6
SC
294SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
295
a43a27c5
PH
296PH/43 Yet another patch from the Sieve maintainer.
297
58eb016e 298PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
299 the response to the final '.' that terminates a message, but only in the
300 case where the client has not sent further data following the '.'
301 (unfortunately, this is allowed). However, in many cases there won't be
302 any further data because there won't be any more messages to send. A call
303 to select() can be used: if it shows that the input is "ready", there is
304 either input waiting, or the socket has been closed. An attempt to read
305 the next input character can distinguish the two cases. Previously, Exim
58eb016e 306 would have sent an OK response which the client would never have see.
563b63fa
PH
307 This could lead to message repetition. This fix should cure that, at
308 least in a lot of common cases.
58eb016e 309
b43a74ea
PH
310PH/45 Do not advertise STARTTLS in response to HELP unless it would be
311 advertised in response to EHLO.
312
b4ed4da0 313
5dd1517f
PH
314Exim version 4.66
315-----------------
316
317PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
318 fixed by 4.65/MH/01 (is this a record?) are fixed:
319
320 (i) An empty string was always treated as zero by the numeric comparison
321 operators. This behaviour has been restored.
322
323 (ii) It is documented that the numeric comparison operators always treat
324 their arguments as decimal numbers. This was broken in that numbers
325 starting with 0 were being interpreted as octal.
326
327 While fixing these problems I realized that there was another issue that
328 hadn't been noticed. Values of message_size_limit (both the global option
329 and the transport option) were treated as octal if they started with 0.
330 The documentation was vague. These values are now always treated as
331 decimal, and I will make that clear in the documentation.
332
333
93cfa765
TK
334Exim version 4.65
335-----------------
336
337TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
338 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
339 versions. (#438)
340
d6066548
MH
341MH/01 Don't check that the operands of numeric comparison operators are
342 integers when their expansion is in "skipping" mode (fixes bug
343 introduced by 4.64-PH/07).
344
4362ff0d
PH
345PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
346 child addresses, Exim now panics and dies. Previously, because the count
347 is held in a short int, deliveries were likely to be lost. As such a
348 large number of recipients for a single message is ridiculous
349 (performance will be very, very poor), I have chosen to impose a limit
350 rather than extend the field.
351
93cfa765 352
944e9e9c
TF
353Exim version 4.64
354-----------------
aa41d2de 355
21d74bd9
TK
356TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
357 leftover -K file (the existence of which was triggered by #402).
358 While we were at it, introduced process PID as part of the -K
359 filename. This should rule out race conditions when creating
360 these files.
361
362TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
363 processing considerably. Previous code took too long for large mails,
364 triggering a timeout which in turn triggers #401.
365
366TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
367 in the DK code in transports.c. sendfile() is not really portable,
368 hence the _LINUX specificness.
944e9e9c
TF
369
370TF/01 In the add_headers option to the mail command in an Exim filter,
371 there was a bug that Exim would claim a syntax error in any
372 header after the first one which had an odd number of characters
373 in the field name.
374
2b1c6e3a
PH
375PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
376 callout verification, Exim cached a "reject" for the entire domain. This
377 is correct for most verifications, but it is not correct for a recipient
378 verification with use_sender or use_postmaster set, because in that case
379 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
380 case of MAIL FROM:<> rejection from other early rejections (e.g.
381 rejection of HELO). When verifying a recipient using a non-null MAIL
382 address, the cache is ignored if it shows MAIL FROM:<> rejection.
383 Whatever the result of the callout, the value of the domain cache is
384 left unchanged (for any other kind of callout, getting as far as trying
385 RCPT means that the domain itself is ok).
386
1f872c80
PH
387PH/02 Tidied a number of unused variable and signed/unsigned warnings that
388 gcc 4.1.1 threw up.
389
390PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
391 manifest itself as EPIPE rather than ECONNECT. When tidying away a
392 session, the daemon ignores ECONNECT errors and logs others; it now
393 ignores EPIPE as well.
394
d203e649
PH
395PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
396 (quoted-printable decoding).
397
cc2ed8f7 398PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 399 later the small subsequent patch to fix an introduced bug.
f951fd57 400
ddfcd446
PH
401PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
402
d45b1de8
PH
403PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
404
405PH/08 An error is now given if message_size_limit is specified negative.
406
38a0a95f 407PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 408 to be given (somewhat) arbitrary names.
38a0a95f 409
a2405d83
JJ
410JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
411 in 4.64-PH/09.
412
413JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
414 miscellaneous code fixes
415
6ea85e9a
PH
416PH/10 Added the log_reject_target ACL modifier to specify where to log
417 rejections.
418
26da7e20
PH
419PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
420 hostname. This is wrong, because it relates to the incoming message (and
421 probably the interface on which it is arriving) and not to the outgoing
422 callout (which could be using a different interface). This has been
423 changed to use the value of the helo_data option from the smtp transport
424 instead - this is what is used when a message is actually being sent. If
425 there is no remote transport (possible with a router that sets up host
426 addresses), $smtp_active_hostname is used.
6ea85e9a 427
14aa5a05 428PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 429 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
430 (a) The code assumed that strncpy() returns a negative number on buffer
431 overflow, which isn't the case. Replaced with Exim's string_format()
432 function.
433 (b) There were several signed/unsigned issues. I just did the minimum
434 hacking in of casts. There is scope for a larger refactoring.
435 (c) The code used strcasecmp() which is not a standard C function.
436 Replaced with Exim's strcmpic() function.
437 (d) The code set only $1; it now sets $auth1 as well.
438 (e) A simple test gave the error "authentication client didn't specify
439 service in request". It would seem that Dovecot has changed its
440 interface. Fortunately there's a specification; I followed it and
441 changed what the client sends and it appears to be working now.
442
ff75a1f7
PH
443PH/13 Added $message_headers_raw to provide the headers without RFC 2047
444 decoding.
445
e6f6568e
PH
446PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
447 address A is aliased to B and C, where B exists and C does not. Without
448 -v the output is "A verified" because verification stops after a
449 successful redirection if more than one address is generated. However,
450 with -v the child addresses are also verified. Exim was outputting "A
451 failed to verify" and then showing the successful verification for C,
452 with its parentage. It now outputs "B failed to verify", showing B's
453 parentage before showing the successful verification of C.
454
d6f6e0dc
PH
455PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
456 look up a TXT record in a specific list after matching in a combined
457 list.
458
322050c2
PH
459PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
460 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
461 they consult the DNS. I had assumed they would set it the way they
462 wanted; and indeed my experiments on Linux seem to show that in some
463 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
464 To be on the safe side, however, I have now made the interface to
465 host_find_byname() similar to host_find_bydns(), with an argument
466 containing the DNS resolver options. The host_find_byname() function now
467 sets these options at its start, just as host_find_bydns() does. The smtp
468 transport options dns_qualify_single and dns_search_parents are passed to
469 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
470 of host_find_byname() use the default settings of RES_DEFNAMES
471 (qualify_single) but not RES_DNSRCH (search_parents).
472
08955dd3
PH
473PH/17 Applied (a modified version of) Nico Erfurth's patch to make
474 spool_read_header() do less string testing, by means of a preliminary
475 switch on the second character of optional "-foo" lines. (This is
476 overdue, caused by the large number of possibilities that now exist.
477 Originally there were few.) While I was there, I also converted the
478 str(n)cmp tests so they don't re-test the leading "-" and the first
479 character, in the hope this might squeeze out yet more improvement.
480
1eccaa59
PH
481PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
482 flag allowing group syntax was set by the header_syntax check but not
483 turned off, possible causing trouble later; (2) The flag was not being
484 set at all for the header_verify test, causing "group"-style headers to
485 be rejected. I have now set it in this case, and also caused header_
486 verify to ignore an empty address taken from a group. While doing this, I
487 came across some other cases where the code for allowing group syntax
488 while scanning a header line wasn't quite right (mostly, not resetting
489 the flag correctly in the right place). These bugs could have caused
490 trouble for malformed header lines. I hope it is now all correct.
491
602e59e5
PH
492PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
493 with the "reply" argument non-NULL. The code, however (which originally
494 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
495 but it didn't always do it. This confused somebody who was copying the
496 code for some other use. I have removed all the tests.
497
411ef850
PH
498PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
499 feature that was used to support insecure browsers during the U.S. crypto
500 embargo. It requires special client support, and Exim is probably the
501 only MTA that supported it -- and would never use it because real RSA is
502 always available. This code has been removed, because it had the bad
503 effect of slowing Exim down by computing (never used) parameters for the
504 RSA_EXPORT functionality.
505
7befa435
PH
506PH/21 On the advice of Timo Sirainen, added a check to the dovecot
507 authenticator to fail if there's a tab character in the incoming data
508 (there should never be unless someone is messing about, as it's supposed
509 to be base64-encoded). Also added, on Timo's advice, the "secured" option
510 if the connection is using TLS or if the remote IP is the same as the
511 local IP, and the "valid-client-cert option" if a client certificate has
512 been verified.
513
48da4259 514PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
515 authenticators. This can be used for authorization after authentication
516 succeeds. (In the case of plaintext, it servers for both authentication
517 and authorization.)
518
48da4259
PH
519PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
520 if any retry times were supplied.
521
d1d5595c
PH
522PH/24 Exim crashed if verify=helo was activated during an incoming -bs
523 connection, where there is no client IP address to check. In this
524 situation, the verify now always succeeds.
525
0ef732d9
PH
526PH/25 Applied John Jetmore's -Mset patch.
527
328895cc
PH
528PH/26 Added -bem to be like -Mset, but loading a message from a file.
529
fd700877
PH
530PH/27 In a string expansion for a processed (not raw) header when multiple
531 headers of the same name were present, leading whitespace was being
532 removed from all of them, but trailing whitespace was being removed only
533 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
534 before concatenation. Completely empty headers in a concatenation (as
535 before) are ignored.
fd700877 536
8dce1a6f
PH
537PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
538 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
539
17af4a17
PH
540PH/29 [Removed. This was a change that I later backed out, and forgot to
541 correct the ChangeLog entry (that I had efficiently created) before
542 committing the later change.]
f6c332bd
PH
543
544PH/30 Exim was sometimes attempting to deliver messages that had suffered
545 address errors (4xx response to RCPT) over the same connection as other
546 messages routed to the same hosts. Such deliveries are always "forced",
547 so retry times are not inspected. This resulted in far too many retries
548 for the affected addresses. The effect occurred only when there were more
549 hosts than the hosts_max_try setting in the smtp transport when it had
550 the 4xx errors. Those hosts that it had tried were not added to the list
551 of hosts for which the message was waiting, so if all were tried, there
552 was no problem. Two fixes have been applied:
553
554 (i) If there are any address or message errors in an SMTP delivery, none
555 of the hosts (tried or untried) are now added to the list of hosts
556 for which the message is waiting, so the message should not be a
557 candidate for sending over the same connection that was used for a
558 successful delivery of some other message. This seems entirely
559 reasonable: after all the message is NOT "waiting for some host".
560 This is so "obvious" that I'm not sure why it wasn't done
561 previously. Hope I haven't missed anything, but it can't do any
562 harm, as the worst effect is to miss an optimization.
563
564 (ii) If, despite (i), such a delivery is accidentally attempted, the
565 routing retry time is respected, so at least it doesn't keep
566 hammering the server.
567
c1114884
PH
568PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
569 in ${readsocket because some servers need this prod.
570
7a0743eb
PH
571PH/32 Added some extra debug output when updating a wait-xxx database.
572
0d85fa3f
PH
573PH/33 The hint "could be header name not terminated by colon", which has been
574 given for certain expansion errors for a long time, was not being given
575 for the ${if def:h_colon_omitted{... case.
576
1bf43b78
PH
577PH/34 The spec says: "With one important exception, whenever a domain list is
578 being scanned, $domain contains the subject domain." There was at least
579 one case where this was not true.
580
520de300
PH
581PH/35 The error "getsockname() failed: connection reset by peer" was being
582 written to the panic log as well as the main log, but it isn't really
583 panic-worthy as it just means the connection died rather early on. I have
584 removed the panic log writing for the ECONNRESET error when getsockname()
585 fails.
586
48c7f9e2
PH
587PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
588 runs only) independently of the message's sender address. This meant
589 that, if the 4xx error was in fact related to the sender, a different
590 message to the same recipient with a different sender could confuse
591 things. In particualar, this can happen when sending to a greylisting
592 server, but other circumstances could also provoke similar problems.
593 I have changed the default so that the retry time for these errors is now
594 based a combination of the sender and recipient addresses. This change
595 can be overridden by setting address_retry_include_sender=false in the
596 smtp transport.
597
99ea1c86
PH
598PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
599 remote server are returned as part of bounce messages. This was not
600 happening for LMTP over a pipe (the lmtp transport), but now it is the
601 same for both kinds of LMTP.
602
a2042e78
PH
603PH/38 Despite being documented as not happening, Exim was rewriting addresses
604 in header lines that were in fact CNAMEs. This is no longer the case.
605
4fbcfc2e
PH
606PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
607 and queue runs started by the daemon processed all messages. This has
608 been fixed so that -R and -S can now usefully be given with -q<time>.
609
aa41d2de
PH
610PH/40 Import PCRE release 6.7 (fixes some bugs).
611
af561417
PH
612PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
613
3cc66b45
PH
614PH/42 Give an error if -q is specified more than once.
615
194cc0e4
PH
616PH/43 Renamed the variables $interface_address and $interface_port as
617 $received_ip_address and $received_port, to make it clear that these
618 values apply to message reception, and not to the outgoing interface when
619 a message is delivered. (The old names remain recognized, of course.)
620
a401ddaa
PH
621PH/44 There was no timeout on the connect() call when using a Unix domain
622 socket in the ${readsocket expansion. There now is.
623
4e88a19f
PH
624PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
625 be meaningful with "accept".
626
d7d7b289
SC
627SC/01 Eximstats V1.43
628 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
629
630SC/02 Eximstats V1.44
631 Use a glob alias rather than an array ref in the generated
632 parser. This improves both readability and performance.
633
634SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
635 Collect SpamAssassin and rejection statistics.
636 Don't display local sender or destination tables unless
637 there is data to show.
638 Added average volumes into the top table text output.
639
640SC/04 Eximstats V1.46
641 Collect data on the number of addresses (recipients)
642 as well as the number of messages.
643
644SC/05 Eximstats V1.47
645 Added 'Message too big' to the list of mail rejection
646 reasons (thanks to Marco Gaiarin).
647
648SC/06 Eximstats V1.48
649 Mainlog lines which have GMT offsets and are too short to
650 have a flag are now skipped.
651
652SC/07 Eximstats V1.49 (Alain Williams)
653 Added the -emptyok flag.
654
655SC/08 Eximstats V1.50
656 Fixes for obtaining the IP address from reject messages.
657
0ea2a468
JJ
658JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
659 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
660 whitesspace changes from 4.64-PH/27
661
662JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
663 match 4.64-PH/13
664
665JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
666 are found, allow negative numbers in numeric criteria)
667
668JJ/06 exipick.20061117.2, added new $message_body_missing variable
669
670JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
671 to match changes made in 4.64-PH/43
672
8a10f5a4
PH
673PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
674
30e18802
PH
675PH/47 Put in an explicit test for a DNS lookup of an address record where the
676 "domain" is actually an IP address, and force a failure. This locks out
677 those revolvers/nameservers that support "A-for-A" lookups, in
678 contravention of the specifications.
679
55728a4f
PH
680PH/48 When a host name was looked up from an IP address, and the subsequent
681 forward lookup of the name timed out, the host name was left in
682 $sender_host_name, contrary to the specification.
d7d7b289 683
d7837193
PH
684PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
685 restricted to single-key lookups, Exim was not diagnosing an error if
686 * or *@ was used with a query-style lookup.
687
87054a31
PH
688PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
689
ea2c01d2
MH
690MH/01 local_scan ABI version incremented to 1.1. It should have been updated
691 long ago, but noone interested enough thought of it. Let's just say that
692 the "1.1" means that there are some new functions that weren't there at
693 some point in the past.
694
e4fa6968
PH
695PH/51 Error processing for expansion failure of helo_data from an smtp
696 transport during callout processing was broken.
697
56f5d9bd
PH
698PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
699 tested/used via the -bh/-bhc/-bs options.
700
922e1c28
PH
701PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
702 bug, fixed in subsequent PCRE releases).
703
21eb6e72
PH
704PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
705 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
706
a0540757
PH
707PH/55 Check for a ridiculously long file name in exim_dbmbuild.
708
944e9e9c 709
478be7b0
SC
710Exim version 4.63
711-----------------
712
713SC/01 Use a glob alias rather than an array ref in eximstats generated
714 parser. This improves both readability and performance.
715
716SC/02 Collect SpamAssassin and rejection statistics in eximstats.
717 Don't display local sender or destination tables in eximstats unless
718 there is data to show.
719 Added average volumes into the eximstats top table text output.
720
721SC/03 Collect data on the number of addresses (recipients) as well
722 as the number of messages in eximstats.
723
2b965a65
TF
724TF/01 Correct an error in the documentation for the redirect router. Exim
725 does (usually) call initgroups() when daemonizing.
478be7b0 726
45b91596
PH
727TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
728 with consistent privilege compared to when running as a daemon.
478be7b0 729
c59f5781
TF
730TF/03 Note in the spec that $authenticated_id is not set for local
731 submissions from trusted users.
732
90fc3069
TF
733TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
734 Thanks to Dean Brooks <dean@iglou.com> for the patch.
735
6083aca0
TF
736TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
737 by adding some example configuration directives to the default
738 configuration file. A little bit of work is required to uncomment the
739 directives and define how usernames and passwords are checked, but
740 there is now a framework to start from.
741
765b530f
PH
742PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
743 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
744 without this. I don't know how relevant this is to other LDAP libraries.
745
4e167a8c
PH
746PH/02 Add the verb name to the "unknown ACL verb" error.
747
4608d683
PH
748PH/03 Magnus Holmgren's patch for filter_prepend_home.
749
b8dc3e4a
PH
750PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
751
5418e93b
PH
752PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
753 directory not expanded when it should be if an expanded home directory
754 was set for the address (which is overridden by the transport).
755
b4a9bda2
PH
756PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
757 libradius.
758
45b91596
PH
759PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
760 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
761 because it is too late at that time, and has no effect.
762
5547e2c5
PH
763PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
764 security issue with \' (bugzilla #107). I could not use the
765 PQescapeStringConn() function, because it needs a PGconn value as one of
766 its arguments.
767
dbcef0ea
PH
768PH/08 When testing addresses using -bt, indicate those final addresses that
769 are duplicates that would not cause an additional delivery. At least one
770 person was confused, thinking that -bt output corresponded to deliveries.
771 (Suppressing duplicates isn't a good idea as you lose the information
772 about possibly different redirections that led to the duplicates.)
773
25257489
PH
774PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
775 systems where poll() doesn't work, in particular OS X.
776
c816d124
PH
777PH/10 Added more information to debugging output for retry time not reached.
778
a9ccd69a
PH
779PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
780 operations in malware.c.
781
75fa1910
PH
782PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
783 signatures.
784
a7d7aa58
PH
785PH/13 If write_rejectlog was set false when logging was sent to syslog with
786 syslog_duplication set false, log lines that would normally be written
787 both the the main log and to the reject log were not written to syslog at
788 all.
789
42119b09
PH
790PH/14 In the default configuration, change the use of "message" in ACL warn
791 statements to "add_header".
792
41609df5
PH
793PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
794 not followed by a command (e.g. "seen endif").
795
a5bd321b
PH
796PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
797 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
798 latter.
799
e85a7ad5 800PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
801 so that it is now:
802
e85a7ad5
PH
803 ${if or { \
804 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
805 { match{$h_precedence:}{(?i)bulk|list|junk} } \
806 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
807 }{no}{yes}}
808
e85a7ad5
PH
809 The Auto-Submitted: and various List- headers are standardised, whereas I
810 don't think Precedence: ever was.
5dff5817 811
d8fe1c03
PH
812PH/18 Refactored debugging code in route_finduser() to show more information,
813 in particular, the error code if getpwnam() issues one.
814
16282d2b
PH
815PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
816 This is apparently needed in addition to the PH/07 change above to avoid
817 any possible encoding problems.
818
35d40a98
PH
819PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
820 but not after initializing Perl.
821
034d99ab
PH
822PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
823 output them only if debugging. By default they are written stderr,
824 apparently, which is not desirable.
825
6ec97b1b
PH
826PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
827 queries.
828
e22ca4ac
JJ
829JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
830 --not options
831
832JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
833
33d73e3b
PH
834PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
835 authenticated or an ident call has been made. Suppress the default
836 values for $authenticated_id and $authenticated_sender (but permit -oMai
837 and -oMas) when testing with -bh.
838
9ecb03f3
PH
839PH/24 Re-jigged the order of the tests in the default configuration so that the
840 tests for valid domains and recipients precede the DNS black list and CSA
841 tests, on the grounds that those ones are more expensive.
842
084efe8d
PH
843PH/25 Exim was not testing for a space following SMTP commands such as EHLO
844 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
845 This bug exists in every version of Exim that I still have, right back to
846 0.12.
847
366fc9f0
PH
848PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
849 However, an attempt to turn on case-sensitivity in a regex key by
850 including (?-i) didn't work because the subject string was already
851 lowercased, and the effects were non-intuitive. It turns out that a
852 one-line patch can be used to allow (?-i) to work as expected.
853
c59f5781 854
c887c79e
TF
855Exim version 4.62
856-----------------
857
858TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
859 other effects) broke the use of negated acl sub-conditions.
860
1cce3af8
PH
861PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
862 patch).
863
afb3eaaf
PH
864PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
865 "Deny" causes Exim to reject the incoming connection with a 554 error.
866 Unfortunately, if there is a major crisis, such as a disk failure,
867 tcp-wrappers gives "deny", whereas what one would like would be some
868 kind of temporary error. A kludge has been added to help with this.
869 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
870 554 error is used if errno is still zero or contains ENOENT (which occurs
871 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
872 451 error is used.
873
e173618b
PH
874PH/03 Add -lutil to the default FreeBSD LIBS setting.
875
dd16e114
PH
876PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
877 errors. Otherwise a message that provokes a temporary error (when other
878 messages do not) can cause a whole host to time out.
879
f7fd3850
PH
880PH/05 Batch deliveries by appendfile and pipe transports did not work when the
881 addresses were routed directly to files or pipes from a redirect router.
882 File deliveries just didn't batch; pipe deliveries might have suffered
883 odd errors.
884
d87df92c
PH
885PH/06 A failure to get a lock for a hints database would erroneously always say
886 "Failed to get write lock", even when it was really a read lock.
887
7e9f683d
PH
888PH/07 The appendfile transport was creating MBX lock files with a fixed mode
889 of 0600. This has been changed to use the value of the lockfile_mode
890 option (which defaults to 0600).
891
bfad5236
PH
892PH/08 Applied small patch from the Sieve maintainer.
893
01c490df
PH
894PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
895 folder from quota calculations, a direct delivery into this folder messed
896 up the contents of the maildirsize file. This was because the regex was
897 used only to exclude .Trash (or whatever) when the size of the mailbox
898 was calculated. There was no check that a delivery was happening into an
899 excluded directory. This bug has been fixed by ignoring all quota
900 processing for deliveries into excluded directories.
901
d6629cdc
PH
902PH/10 Added the maildirfolder_create_regex option to appendfile.
903
1cce3af8 904
214e2000
PH
905Exim version 4.61
906-----------------
907
908PH/01 The code for finding all the local interface addresses on a FreeBSD
909 system running IPv6 was broken. This may well have applied to all BSD
910 systems, as well as to others that have similar system calls. The broken
911 code found IPv4 interfaces correctly, but gave incorrect values for the
912 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
913 that it would not match correctly against @[] and not recognize the IPv6
914 addresses as local.
915
f9daeae0
PH
916PH/02 The ipliteral router was not recognizing addresses of the form user@
917 [ipv6:....] because it didn't know about the "ipv6:" prefix.
918
7e66e54d
PH
919PH/03 Added disable_ipv6.
920
c8ea1597
PH
921PH/04 Changed $reply_address to use the raw form of the headers instead of the
922 decoded form, because it is most often used to construct To: headers
923 lines in autoreplies, and the decoded form may well be syntactically
924 invalid. However, $reply_address has leading white space removed, and all
925 newlines turned into spaces so that the autoreply transport does not
926 grumble.
927
911f6fde
PH
928PH/05 If group was specified without a user on a router, and no group or user
929 was specified on a transport, the group from the router was ignored.
930
47ca6d6c
PH
931PH/06 Increased the number of ACL variables to 20 of each type, and arranged
932 for visible compile-time settings that can be used to change these
933 numbers, for those that want even more. Backwards compatibility with old
934 spool files has been maintained. However, going back to a previous Exim
935 release will lost any variables that are in spool files.
936
ed0e9820
PH
937PH/07 Two small changes when running in the test harness: increase delay when
938 passing a TCP/IP connection to a new process, in case the original
939 process has to generate a bounce, and remove special handling of
940 127.0.0.2 (sic), which is no longer necessary.
941
eff37e47
PH
942PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
943 be the same on different OS.
944
1921d2ea
PH
945PH/09 Moved a debug statement in filter processing to avoid a race problem when
946 testing.
947
b3f69ca8
JJ
948JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
949 whether --show-vars was specified or not
950
951JJ/02 exipick: Added support for new ACL variable spool format introduced
952 in 4.61-PH/06
953
424a1c63
PH
954PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
955 syntactically invalid From: or Reply-to: line, and a filter used this to
956 generate an autoreply, and therefore failed to obtain an address for the
957 autoreply, Exim could try to deliver to a non-existent relative file
958 name, causing unrelated and misleading errors. What now happens is that
959 it logs this as a hard delivery error, but does not attempt to create a
960 bounce message.
961
7a100415
PH
962PH/11 The exinext utility has a -C option for testing purposes, but although
963 the given file was scanned by exinext itself; it wasn't being passed on
964 when Exim was called.
965
19b9dc85
PH
966PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
967 an end-of-file indication when reading a command response.
968
309bd837
PH
969PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
970 compiled. In many other places in Exim, IPv6 addresses are always
971 recognized, so I have changed this. It also means that IPv4 domain
972 literals of the form [IPV4:n.n.n.n] are now always recognized.
973
59e82a2a
PH
974PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
975 used if the router is not running as root, for example, when verifying at
976 ACL time, or when using -bh. The debugging output from this situation was
977 non-existent - all you got was a failure to exec. I have made two
978 changes:
979
980 (a) Failures to set uid/gid, the current directory, or a process leader
981 in a subprocess such as that created by queryprogram now generate
982 suitable debugging ouput when -d is set.
983
984 (b) The queryprogram router detects when it is not running as root,
985 outputs suitable debugging information if -d is set, and then runs
986 the subprocess without attempting to change uid/gid.
987
9edc04ce
PH
988PH/15 Minor change to Makefile for building test_host (undocumented testing
989 feature).
990
1349e1e5
PH
991PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
992 additional section of a DNS packet that returns MX or SRV records.
993 Instead, it always explicitly searches for A/AAAA records. This avoids
994 major problems that occur when a DNS server includes only records of one
995 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
996 fixed another bug: if SRV records were looked up and the corresponding
997 address records were *not* found in the additional section, the port
998 values from the SRV records were lost.
999
ea49d0e1
PH
1000PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
1001 using the correct key (the original address) when searching the retry
1002 rules in order to find which one to use for generating the retry hint.
1003
064a94c9
PH
1004PH/18 If quota_warn_message contains a From: header, Exim now refrains from
1005 adding the default one. Similarly, if it contains a Reply-To: header, the
1006 errors_reply_to option, if set, is not used.
1007
727071f8
PH
1008PH/19 When calculating a retry time, Exim used to measure the "time since
1009 failure" by looking at the "first failed" field in the retry record. Now
1010 it does not use this if it is later than than the arrival time of the
1011 message. Instead it uses the arrival time. This makes for better
1012 behaviour in cases where some deliveries succeed, thus re-setting the
1013 "first failed" field. An example is a quota failure for a huge message
1014 when small messages continue to be delivered. Without this change, the
1015 "time since failure" will always be short, possible causing more frequent
1016 delivery attempts for the huge message than are intended.
dd16e114 1017 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 1018
f78eb7c6
PH
1019PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
1020 $1, $2, $3) because the numerical variables can be reset during some
1021 expansion items (e.g. "match"), thereby losing the authentication data.
1022
21c28500
PH
1023PH/21 Make -bV show the size of off_t variables so that the test suite can
1024 decide whether to run tests for quotas > 2G.
1025
1026PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
1027 mailbox_size, and mailbox_filecount in the appendfile transport. If a
1028 filecount value is greater than 2G or if a quota value is greater than 2G
1029 on a system where the size of off_t is not greater than 4, a panic error
1030 is given.
1031
1688f43b
PH
1032PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
1033 never match. The debug and -bh output now contains an explicit error
1034 message indicating a malformed IPv4 address or mask.
1035
1036PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
1037 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
1038 PH/23 above applies.
1039
9675b384
PH
1040PH/25 Do not write to syslog when running in the test harness. The only
1041 occasion when this arises is a failure to open the main or panic logs
1042 (for which there is an explicit test).
1043
6a3f1455
PH
1044PH/26 Added the /no_tell option to "control=freeze".
1045
dac79d3e
PH
1046PH/27 If a host name lookup failed very early in a connection, for example, if
1047 the IP address matched host_lookup and the reverse lookup yielded a name
1048 that did not have a forward lookup, an error message of the form "no IP
1049 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
1050 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 1051
5977a0b3
PH
1052PH/28 An enabling patch from MH: add new function child_open_exim2() which
1053 allows the sender and the authenticated sender to be set when
1054 submitting a message from within Exim. Since child_open_exim() is
1055 documented for local_scan(), the new function should be too.
1056
c91535f3
PH
1057PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1058 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1059 results in an empty string is now treated as unset.
1060
0d46a8c8
PH
1061PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1062
278c6e6c
PH
1063PH/31 Added sender_verify_fail logging option.
1064
2cbb4081
PH
1065PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1066 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1067 tidied the source and removed it altogether.
1068
3eef829e
PH
1069PH/33 When a queue run was abandoned because the load average was too high, a
1070 log line was always written; now it is written only if the queue_run log
1071 selector is set. In addition, the log line for abandonment now contains
1072 information about the queue run such as the pid. This is always present
1073 in "start" and "stop" lines but was omitted from the "abandon" line.
1074
1ab95fa6
PH
1075PH/34 Omit spaces between a header name and the colon in the error message that
1076 is given when verify = headers_syntax fails (if there are lots of them,
1077 the message gets confusing).
1078
230205fc
PH
1079PH/35 Change the default for dns_check_names_pattern to allow slashes within
1080 names, as there are now some PTR records that contain slashes. This check
1081 is only to protect against broken name servers that fall over on strange
1082 characters, so the fact that it applies to all lookups doesn't matter.
1083
75e0e026
PH
1084PH/36 Now that the new test suite is complete, we can remove some of the
1085 special code in Exim that was needed for the old test suite. For example,
1086 sorting DNS records because real resolvers return them in an arbitrary
1087 order. The new test suite's fake resolver always returns records in the
1088 same order.
1089
1090PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1091 bounces) except when queue_only is set, to avoid logging races between
1092 the different processes.
1093
145396a6
PH
1094PH/38 Panic-die if .include specifies a non-absolute path.
1095
3cd34f13
PH
1096PH/39 A tweak to the "H" retry rule from its user.
1097
11121d3d
JJ
1098JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1099 a label. They prevented compilation on older perls.
1100
1101JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1102 a warning to be raised on newish perls.
1103
1104JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1105 on queue. Changes to match documented behaviour of showing count of
1106 messages matching specified criteria.
1107
8def5aaf
PH
1108PH/40 Changed the default ident timeout from 30s to 5s.
1109
929ba01c
PH
1110PH/41 Added support for the use of login_cap features, on those BSD systems
1111 that have them, for controlling the resources used by pipe deliveries.
1112
2632889e
PH
1113PH/42 The content-scanning code uses fopen() to create files in which to put
1114 message data. Previously it was not paying any attention to the mode of
1115 the files. Exim runs with umask(0) because the rest of the code creates
1116 files with open(), and sets the required mode explicitly. Thus, these
1117 files were ending up world-writeable. This was not a big issue, because,
1118 being within the spool directory, they were not world-accessible. I have
1119 created a function called modefopen, which takes an additional mode
1120 argument. It sets umask(777), creates the file, chmods it to the required
1121 mode, then resets the umask. All the relevant calls to fopen() in the
1122 content scanning code have been changed to use this function.
1123
944a9c55
PH
1124PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1125 to 24 hours. This avoids potential overflow problems when processing G
1126 and H retry rules. I suspect nobody ever tinkers with this value.
1127
4a23603b
PH
1128PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1129
4730f942
PH
1130PH/45 When the plaintext authenticator is running as a client, the server's
1131 challenges are checked to ensure they are valid base64 strings. By
1132 default, the authentication attempt is cancelled if an invalid string is
1133 received. Setting client_ignore_invalid_base64 true ignores these errors.
1134 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1135 they are received. Thus, the responses can be made to depend on the
1136 challenges. If an invalid string is ignored, an empty string is placed in
1137 the variable.
1138
30dba1e6
PH
1139PH/46 Messages that are created by the autoreply transport now contains a
1140 References: header, in accordance with RFCs 2822 and 3834.
1141
382afc6b
PH
1142PH/47 Added authenticated_sender_force to the smtp transport.
1143
a86229cf
PH
1144PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1145
50c99ba6
PH
1146PH/49 Installed latest patch from the Sieve maintainer.
1147
d35e429d
PH
1148PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1149 was also set, the appendfile transport was unnecessarily scanning a
1150 directory of message files (e.g. for maildir delivery) to find the count
1151 of files (along with the size), even though it did not need this
1152 information. It now does the scan only if it needs to find either the
1153 size of the count of files.
1154
f90d018c
PH
1155PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1156
75def545
PH
1157PH/52 Two bugs concerned with error handling when the smtp transport is
1158 used in LMTP mode:
1159
1160 (i) Exim was not creating retry information for temporary errors given
1161 for individual recipients after the DATA command when the smtp transport
1162 was used in LMTP mode. This meant that they could be retried too
1163 frequently, and not timed out correctly.
1164
1165 (ii) Exim was setting the flag that allows error details to be returned
1166 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1167 recipients that were returned after the DATA command.
1168
1169PH/53 This is related to PH/52, but is more general: for any failing address,
1170 when detailed error information was permitted to be returned to the
1171 sender, but the error was temporary, then after the final timeout, only
1172 "retry timeout exceeded" was returned. Now it returns the full error as
1173 well as "retry timeout exceeded".
1174
c46782ef
PH
1175PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1176 do this, and (what is worse) MTAs that accept it.
1177
71fafd95
PH
1178PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1179 will now be deprecated.
1180
2c5db4fd
PH
1181PH/56 New os.c-cygwin from the Cygwin maintainer.
1182
9cf6b11a
JJ
1183JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1184 formats (previously only available in exim formats via -bpr, -bpru,
1185 and -bpra. Now also available in native and exiqgrep formats)
1186
1187JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1188 with very large, slow to parse queues
1189
1190JJ/08 exipick: added ! as generic prefix to negate any criteria format
1191
1192JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1193
898d150f
PH
1194PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1195 responses to authentication challenges, though it was showing the
1196 challenges; (ii) I've removed the CR characters from the debug output for
1197 SMTP output lines.
1198
46218253
PH
1199PH/58 Allow for the insertion of a newline as well as a space when a string
1200 is turned into more than one encoded-word during RFC 2047 encoding. The
1201 Sieve code now uses this.
1202
e97957bc
PH
1203PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1204 data_4xx, lost_connection, tls_required.
1205
81e509d7
PH
1206PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1207 message was being sent as an SMTP response.
1208
3d240ff7
PH
1209PH/61 Add -l and -k options to exicyclog.
1210
b37c4101
PH
1211PH/62 When verifying, if an address was redirected to one new address, so that
1212 verification continued, and the new address failed or deferred after
1213 having set something in $address_data, the value of $address_data was not
1214 passed back to the ACL. This was different to the case when no
1215 redirection occurred. The value is now passed back in both cases.
1216
79378e0f
PH
1217PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1218 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1219 use login_cap.h, so on its own it isn't the distinguishing feature. The
1220 new name refers directly to the setclassresources() function.
1221
e49c7bb4
PH
1222PH/65 Added configuration files for NetBSD3.
1223
d114ec46
PH
1224PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1225
f3d7df6c
PH
1226PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1227 is preferred over IPv4.
1228
715ab376
PH
1229PH/68 The bounce_return_message and bounce_return_body options were not being
1230 honoured for bounces generated during the reception of non-SMTP messages.
1231 In particular, this applied to messages rejected by the ACL. This bug has
1232 been fixed. However, if bounce_return_message is true and bounce_return_
1233 body is false, the headers that are returned for a non-SMTP message
1234 include only those that have been read before the error was detected.
1235 (In the case of an ACL rejection, they have all been read.)
1236
6b31b150
PH
1237PH/69 The HTML version of the specification is now built in a directory called
1238 spec_html instead of spec.html, because the latter looks like a path with
1239 a MIME-type, and this confuses some software.
1240
1241PH/70 Catch two compiler warnings in sieve.c.
1242
d515a917
PH
1243PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1244 function verify_get_ident() calls ip_connect() to connect a socket, but
1245 if the "connect()" function timed out, ip_connect() used to close the
1246 socket. However, verify_get_ident() also closes the socket later, and in
1247 between Exim writes to the log, which may get opened at this point. When
1248 the socket was closed in ip_connect(), the log could get the same file
1249 descriptor number as the socket. This naturally causes chaos. The fix is
1250 not to close the socket in ip_connect(); the socket should be closed by
1251 the function that creates it. There was only one place in the code where
1252 this was missing, in the iplookup router, which I don't think anybody now
1253 uses, but I've fixed it anyway.
1254
9b8fadde
PH
1255PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1256 well as to direct DNS lookups. Otherwise the handling of names in host
1257 lists is inconsistent and therefore confusing.
1258
214e2000 1259
5de37277
PH
1260Exim version 4.60
1261-----------------
1262
cc38ddbf
PH
1263PH/01 Two changes to the default runtime configuration:
1264
1265 (1) Move the checks for relay_from_hosts and authenticated clients from
1266 after to before the (commented out) DNS black list checks.
1267
1268 (2) Add control=submission to the relay_from_hosts and authenticated
1269 clients checks, on the grounds that messages accepted by these
1270 statements are most likely to be submissions.
5de37277 1271
72fdd6ae
PH
1272PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1273
1274 (1) Generate an error if the third argument for the ${prvs expansion is
1275 not a single digit.
1276
1277 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1278 string.
1279
1280 (3) Reset the variables that are obtained from the first argument of
1281 ${prvscheck and used in the second argument before leaving the code,
1282 because their memory is reclaimed, so using them afterwards may do
1283 silly things.
1284
1285 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1286 one (it's much easier than Tom thought :-).
1287
1288 (5) Because of (4), we can now allow for the use of $prvscheck_result
1289 inside the third argument.
cb9328de 1290
cb741023
PH
1291PH/03 For some reason, the default setting of PATH when running a command from
1292 a pipe transport was just "/usr/bin". I have changed it to
1293 "/bin:/usr/bin".
1294
f174f16e
PH
1295PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1296 anything to be listed in the output from -bV.
b2f5a032 1297
c25242d7
PH
1298PH/05 When a filter generated an autoreply, the entire To: header line was
1299 quoted in the delivery log line, like this:
1300
1301 => >A.N.Other <ano@some.domain> <original@ddress> ...
1302
1303 This has been changed so that it extracts the operative address. There
1304 may be more than one such address. If so, they are comma-separated, like
1305 this:
1306
1307 => >ano@some.domain,ona@other.domain <original@ddress> ...
1308
82c19f95
PH
1309PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1310 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1311 not being looked up in the rDNS to get a host name, Exim was showing the
1312 IP address twice in Received: lines, even though the IP addresses were
1313 identical. For example:
1314
1315 Received: from [1.2.3.4] (helo=[1.2.3.4])
1316
1317 However, if the real host name was known, it was omitting the HELO data
1318 if it matched the actual IP address. This has been tidied up so that it
1319 doesn't show the same IP address twice.
1320
d7ffbc12
PH
1321PH/07 When both +timestamp and +memory debugging was on, the value given by
1322 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1323 called by the debug printing, thereby overwriting the timestamp buffer.
1324 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1325
9f526266
PH
1326PH/08 When the original message was included in an autoreply transport, it
1327 always said "this is a copy of the message, including all the headers",
1328 even if body_only or headers_only was set. It now gives an appropriate
1329 message.
1330
87fcc8b9
PH
1331PH/09 Applied a patch from the Sieve maintainer which:
1332
1333 o fixes some comments
1334 o adds the (disabled) notify extension core
1335 o adds some debug output for the result of if/elsif tests
1336 o points to the current vacation draft in the documentation
1337 and documents the missing references header update
1338
1339 and most important:
1340
1341 o fixes a bug in processing the envelope test (when testing
1342 multiple envelope elements, the last element determinted the
1343 result)
1344
456682f5
PH
1345PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1346 Electronic Mail") by including:
1347
1348 Auto-submitted: auto-generated
1349
1350 in the messages that it generates (bounce messages and others, such as
1351 warnings). In the case of bounce messages for non-SMTP mesages, there was
1352 also a typo: it was using "Auto_submitted" (underscore instead of
1353 hyphen). Since every message generated by Exim is necessarily in response
1354 to another message, thes have all been changed to:
1355
1356 Auto-Submitted: auto-replied
1357
1358 in accordance with these statements in the RFC:
1359
1360 The auto-replied keyword:
1361
1362 - SHOULD be used on messages sent in direct response to another
1363 message by an automatic process,
1364
1365 - MUST NOT be used on manually-generated messages,
1366
1367 - MAY be used on Delivery Status Notifications (DSNs) and Message
1368 Disposition Notifications (MDNs),
1369
1370 - MUST NOT be used on messages generated by automatic or periodic
1371 processes, except for messages which are automatic responses to
1372 other messages.
1373
3e46c1aa
PH
1374PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1375 to the default Received: header definition.
456682f5 1376
49826d12
PH
1377PH/12 Added log selector acl_warn_skipped (default on).
1378
eba0c039
PH
1379PH/13 After a successful wildlsearch lookup, discard the values of numeric
1380 variables because (a) they are in the wrong storage pool and (b) even if
1381 they were copied, it wouldn't work properly because of the caching.
1382
a0d6ba8a
PH
1383PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1384 checking when decoding. Apparently there are clients that generate
1385 overlong encoded strings. Why am I not surprised?
1386
f0917727
PH
1387PH/15 If the first argument of "${if match_address" was not empty, but did not
1388 contain an "@" character, Exim crashed. Now it writes a panic log message
1389 and treats the condition as false.
1390
096fee00
PH
1391PH/16 In autoreply, treat an empty string for "once" the same as unset.
1392
024bd3c2
PH
1393PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1394 extension "envelope-auth". The code is finished and in agreement with
1395 other implementations, but there is no documentation so far and in fact,
1396 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1397 not changing the active code.
1398
1399 Print executed "if" and "elsif" statements when debugging is used. This
1400 helps a great deal to understand what a filter does.
1401
1402 Document more things not specified clearly in RFC3028. I had all this
1403 sorted out, when out of a sudden new issues came to my mind. Oops."
1404
df199fec
PH
1405PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1406 (Bugzilla #53).
1407
d27f1df3
PH
1408PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1409 canonical form (as documented). However, after a host name lookup from
1410 the IP address, check_host() was doing a simple string comparison with
1411 addresses acquired from the DNS when checking that the found name did
1412 have the original IP as one of its addresses. Since any found IPv6
1413 addresses are likely to be in abbreviated form, the comparison could
1414 fail. Luckily, there already exists a function for doing the comparison
1415 by converting both addresses to binary, so now that is used instead of
1416 the text comparison.
1417
96776534
PH
1418PH/20 There was another similar case to PH/19, when a complete host name was
1419 given in a host list; looking up its IP address could give an abbreviated
1420 form, whereas the current host's name might or might not be abbreviated.
1421 The same fix has been applied.
1422
5de37277 1423
9a799bc0
PH
1424Exim version 4.54
1425-----------------
1426
1427PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1428 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1429 It now does.
1430
99a4b039
PH
1431PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1432 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1433
1434PH/03 Typo: missing ".o" in src/pcre/Makefile.
1435
4b233853
PH
1436PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1437 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1438 Also, for "Auto-Submitted", treat anything other than "no" as
1439 non-personal, in accordance with RFC 3834. (Previously it treated
1440 anything starting "auto-" as non-personal.)
1441
8857ccfd
PH
1442TF/01 The control=submission/name=... option had a problem with syntax
1443 errors if the name included a slash character. The /name= option
1444 now slurps the rest of the string, so it can include any characters
1445 but it must come last in the list of options (after /sender_retain
1446 or /domain=).
1447
433a2980
PH
1448PH/05 Some modifications to the interface to the fake nameserver for the new
1449 testing suite.
1450
3e46c1aa 1451
9a799bc0 1452
e3a311ba
TK
1453Exim version 4.53
1454-----------------
1455
1456TK/01 Added the "success_on_redirect" address verification option. See
1457 NewStuff for rationale and an example.
1458
13b685f9
PH
1459PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1460
395ff96d
PH
1461PH/02 Patch to exigrep to allow it to work on syslog lines.
1462
5b68f6e4
PH
1463PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1464 fread() to skip over the body file's header line, because in Cygwin the
1465 header line is locked and is inaccessible.
1466
1ab52c69
PH
1467PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1468 co-exist for some time) to make it clear that it is the Exim ID that is
1469 referenced, not the Message-ID: header line.
1470
b07e6aa3
PH
1471PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1472 string_format() function, because snprintf() does not exist on all
1473 operating systems.
1474
254e032f
PH
1475PH/06 The use of forbid_filter_existstest now also locks out the use of the
1476 ${stat: expansion item.
1477
3af76a81
PH
1478PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1479 protocol synchronization error", to keep the pedants happy.
1480
2548ba04
PH
1481PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1482 well as for IRIX systems, when gcc is being used. See the host.c source
1483 file for comments.
1484
b6c6011d
PH
1485PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1486
cf39cf57
PH
1487PH/10 Named domain lists were not working if used in a queue_smtp_domains
1488 setting.
1489
f1513293
PH
1490PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1491 transport and to the smtp transport in LMTP mode.
1492
727549a4
PH
1493TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1494
af46795e
PH
1495PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1496 run a filter in a subprocess. This could lead to confusion in subsequent
1497 lookups in the parent process. There should also be a search_tidyup() at
1498 the end of the subprocess.
1499
d7b47fd0
PH
1500PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1501 only if the host matched helo_try_verify_hosts, which caused the
1502 verification to occur when the EHLO/HELO command was issued. The ACL just
1503 tested the remembered result. Now, if a previous verification attempt has
1504 not happened, "verify = helo" does it there and then.
1505
ee744174
JJ
1506JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1507
b582ab87
PH
1508TK/03 Fix log output including CR from clamd.
1509
41a13e0a
PH
1510PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1511 exist provoked a memory error which could cause a segfault.
1512
f625cc5a
PH
1513PH/15 Installed PCRE 6.2
1514
1515PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1516
21f7af35
PH
1517PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1518 of the problem. Specifically, suggested +O2 rather than +O1 for the
1519 HP-UX compiler.
1520
31480e42
PH
1521PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1522
2d280592
PH
1523PH/20 If a delivery was routed to a non-standard port by means of an SRV
1524 record, the port was not correctly logged when the outgoing_port log
1525 selector was set (it logged the transort's default port).
1526
7cd1141b
PH
1527PH/21 Added support for host-specific ports to manualroute, queryprogram,
1528 fallback_hosts, and "hosts" in the smtp transport.
1529
1530PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1531 host errors such as "Connection refused".
1532
750af86e
PH
1533PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1534 authentication with radiusclient 0.4.9:
1535
1536 - Error returned from rc_read_config was caught wrongly
1537 - Username/password not passed on to radius server due to wrong length.
1538
1539 The presumption is that some radiusclient API changes for 4.51/PH/17
1540 were not taken care of correctly. The code is still untested by me (my
1541 Linux distribution still has 0.3.2 of radiusclient), but it was
1542 contributed by a Radius user.
1543
1544PH/24 When doing a callout, the value of $domain wasn't set correctly when
1545 expanding the "port" option of the smtp transport.
1546
4304270b
TK
1547TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1548 while reading a MIME header. Thanks to Tom Hughes for a patch.
1549
750af86e
PH
1550PH/24 Include config.h inside local_scan.h so that configuration settings are
1551 available.
1552
64ffc24f
PH
1553PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1554 that in an ACL for RCPT (for example), you can examine exactly what was
1555 received.
1556
5dd9625b
PH
1557PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1558 commands, but it was not correctly comparing the address with the actual
1559 client host address. Thus, it would show the EHLO address in Received:
1560 header lines when this was not necessary.
1561
5591031b
PH
1562PH/27 Added the % operator to ${eval:}.
1563
ba18e66a
PH
1564PH/28 Exim tries to create and chdir to its spool directory when it starts;
1565 it should be ignoring failures (because with -C, for example, it has lost
1566 privilege). It wasn't ignoring creation failures other than "already
1567 exists".
1568
9cec981f
PH
1569PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1570 -bV or -d is used.
1571
aa2b5c79
PH
1572PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1573 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1574 too many continuations, the temporary file was not being removed, and the
1575 return code was incorrect.
aa2b5c79 1576
48a53b7f
PH
1577PH/31 Missing "BOOL" in function definition in filtertest.c.
1578
1c59d63b
PH
1579PH/32 Applied Sieve patches from the maintainer.
1580
671012da
TK
1581TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1582
1509d3a8
PH
1583PH/33 Added "verify = not_blind".
1584
1585PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1586 Local/Makefile (with some defaults set). These are used in built scripts
1587 such as exicyclog, but they have never been used in the exim_install
1588 script (though there are many overriding facilities there). I have
1589 arranged that the exim_install script now takes note of these two
1590 settings.
1591
1592PH/35 Installed configuration files for Dragonfly.
1593
2fe1a124
PH
1594PH/36 When a locally submitted message by a trusted user did not contain a
1595 From: header, and the sender address was obtained from -f or from an SMTP
1596 MAIL command, and the trusted user did not use -F to supply a sender
1597 name, $originator_name was incorrectly used when constructing a From:
1598 header. Furthermore, $originator_name was used for submission mode
1599 messages from external hosts without From: headers in a similar way,
1600 which is clearly wrong.
1601
8800895a
PH
1602PH/37 Added control=suppress_local_fixups.
1603
ccfdb010
PH
1604PH/38 When log_selector = +received_sender was set, and the addition of the
1605 sender made the log line's construction buffer exactly full, or one byte
1606 less than full, an overflow happened when the terminating "\n" was
1607 subsequently added.
1608
1130bfb0
PH
1609PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1610 when the result of a list match is failure because a DNS lookup failed.
1611
ebcb507f
PH
1612PH/40 RM_COMMAND is now used in the building process.
1613
c35e155c
PH
1614PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1615 the "build-* directories that it finds.
1616
95d1f782
PH
1617PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1618 address in a domain literal was a prefix of an interface address.
1619
fd6de02e
PH
1620PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1621 when verifying a sender address, unless rewrite_headers is false.
1622
58de37c5
PH
1623PH/44 Wrote a long comment about why errors_to addresses are verified as
1624 recipients, not senders.
1625
261cf466
TF
1626TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1627 the ratelimit ACL was added.
1628
3ee512ff
PH
1629PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1630
e08c430f
PH
1631PH/46 Added extra information about PostgreSQL errors to the error string.
1632
bef5a11f
PH
1633PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1634 avoiding the need to install special zones in a real server. This is
1635 backwards compatible; if it can't find the fake resolver, it drops back.
1636 Thus, both old and new test suites can be run.
1637
7546de58
TF
1638TF/02 Added util/ratelimit.pl
1639
e5d5a95f
TF
1640TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1641 clock is set back in time.
1642
2e88a017
TF
1643TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1644 Candler <B.Candler@pobox.com>.
1645
a5f65aa4
TF
1646TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1647 OK for addresses that are the result of redirections.
1648
e7726cbf
PH
1649PH/48 A number of further additions for the benefit of the new test suite,
1650 including a fake gethostbyname() that interfaces to the fake DNS resolver
1651 (see PH/47 above).
1652
a7fdad5b
TF
1653TF/06 The fix for widen_domains has also been applied to qualify_single and
1654 search_parents which are the other dnslookup options that can cause
1655 header rewrites.
1656
6af56900
PH
1657PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1658 type ("H").
1659
0925ede6
PH
1660PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1661
66afa403
TF
1662TF/07 Exim produced the error message "an SRV record indicated no SMTP
1663 service" if it encountered an MX record with an empty target hostname.
1664 The message is now "an MX or SRV record indicated no SMTP service".
1665
0154e85a
TF
1666TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1667 if the DNS of the sending site is misconfigured. This is quite a
1668 common situation. This change restores the behaviour of treating a
1669 helo verification defer as a failure.
1670
16f12c76
PH
1671PH/51 If self=fail was set on a router, the bounce message did not include the
1672 actual error message.
1673
bbe902f0 1674
e5a9dba6
PH
1675Exim version 4.52
1676-----------------
1677
1678TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1679
22c3b60b
PH
1680PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1681 command itself ended in error, the underlying message about the transport
1682 filter timeout was being overwritten with the pipe command error. Now the
1683 underlying error message should be appended to the second error message.
1684
06a9b4b5
PH
1685TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1686
c1ac6996
PH
1687PH/02 Reduce the amount of output that "make" produces by default. Full output
1688 can still be requested.
1689
9c7a242c
PH
1690PH/03 The warning log line about a condition test deferring for a "warn" verb
1691 was being output only once per connection, rather than after each
1692 occurrence (because it was using the same function as for successful
1693 "warn" verbs). This seems wrong, so I have changed it.
1694
87ba3f5f
PH
1695TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1696 it should not have, which might have caused a crash in the right
1697 circumstances, but probably never did.
1698
1699PH/04 Installed a modified version of Tony Finch's patch to make submission
1700 mode fix the return path as well as the Sender: header line, and to
1701 add a /name= option so that you can make the user's friendly name appear
1702 in the header line.
1703
29aba418
TF
1704TF/03 Added the control = fakedefer ACL modifier.
1705
fe0dab11
TF
1706TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1707 Mark Lowes for thorough testing.
870f6ba8 1708
11d337a4
TK
1709TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1710
1711TK/03 Merged latest SRS patch from Miles Wilton.
1712
415c8f3b
PH
1713PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1714 with the definition in sysexits.h (which is #included earlier).
1715 Fortunately, Exim does not actually use EX_OK. The code used to try to
1716 preserve the sysexits.h value, by assumimg that macro definitions were
1717 scanned for macro replacements. I have been disabused of this notion,
1718 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1719
958541e9
PH
1720PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1721 in the smtp transport. When a block could not be written in a single
1722 write() function, the timeout was being re-applied to each part-write.
1723 This seems wrong - if the receiver was accepting one byte at a time it
1724 would take for ever. The timeout is now adjusted when this happens. It
1725 doesn't have to be particularly precise.
1726
c206415f
TK
1727TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1728 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1729
2a4be8f9
PH
1730PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1731 without a domain if the check to <postmaster@domain> fails.
1732
1cba11c5
SC
1733SC/01 Eximstats: added -xls and the ability to specify output files
1734 (patch written by Frank Heydlauf).
1735
1736SC/02 Eximstats: use FileHandles for outputing results.
1737
1738SC/03 Eximstats: allow any combination of xls, txt, and html output.
1739
1740SC/04 Eximstats: fixed display of large numbers with -nvr option
1741
1742SC/05 Eximstats: fixed merging of reports with empty tables.
1743
1744SC/06 Eximstats: added the -include_original_destination flag
1745
1746SC/07 Eximstats: removed tabs and trailing whitespace.
1747
1005d00e
TK
1748TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1749
1750TK/06 MBOX spool code: Add real "From " MBOX separator line
1751 so the .eml file is really in mbox format (even though
1752 most programs do not really care). Patch from Alex Miller.
1753
1754TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1755 The latter is generated from $received_to and is only set if the
1756 message has one envelope recipient. SA can use these headers,
1757 obviously out-of-the-box. Patch from Alex Miller.
1758
9b4768fa
PH
1759PH/08 The ${def test on a variable was returning false if the variable's
1760 value was "0", contrary to what the specification has always said!
1761 The result should be true unless the variable is empty.
1762
1763PH/09 The syntax error of a character other than { following "${if
1764 def:variable_name" (after optional whitespace) was not being diagnosed.
1765 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1766 accidental colon was present, for example, could give incorrect results.
1767
0d7eb84a
PH
1768PH/10 Tidied the code in a number of places where the st_size field of a stat()
1769 result is used (not including appendfile, where other changes are about
1770 to be made).
1771
1772PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1773 This involved changing a lot of size variables from int to off_t. It
1774 should work with maildirs and everything.
1775
40727bee
TK
1776TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1777 spamd dying while we are connected to it.
1778
554d2369
TF
1779TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1780 <jgh@wizmail.org>
1781
1f922db1
PH
1782PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1783 function for BDB 4.3.
1784
ef213c3b
PH
1785PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1786
8ac170f3
PH
1787PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1788 the sources for PCRE have been re-arranged and more files are now
1789 involved.
1790
b1c749bb
PH
1791PH/15 The code I had for printing potentially long long variables in PH/11
1792 above was not the best (it lost precision). The length of off_t variables
1793 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1794 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1795 to be "long long int" or "long int". This is needed for the internal
1796 formatting function string_vformat().
b1c749bb 1797
4aac9b49
PH
1798PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1799 the configuration file to be ":syslog", then the script "guesses" where
1800 the logs files are, rather than using the compiled in default. In our
1801 case the guess is not the same as the compiled default, so the script
1802 suddenly stopped working when I started to use syslog. The patch checks
1803 to see if log_file_path is "". If so, it attempts to read it from exim
1804 with no configuration file to get the compiled in version, before it
1805 falls back to the previous guessing code."
1806
294520c8
TK
1807TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1808 implementing BATV in an Exim configuration. See NewStuff for the gory
1809 details.
1810
5bd022fe
PH
1811PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1812 Makefile that are specific to HP-UX.
1813
90e9ce59
PH
1814PH/18 If the "use_postmaster" option was set for a recipient callout together
1815 with the "random" option, the postmaster address was used as the MAIL
1816 FROM address for the random test, but not for the subsequent recipient
1817 test. It is now used for both.
1818
5ea81592
PH
1819PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1820 patch removes a few documentation additions to RFC 3028, because the
1821 latest draft now contains them. It adds the new en;ascii-case comparator
1822 and a new error check for 8bit text in MIME parts. Comparator and
1823 require names are now matched exactly. I enabled the subaddress
1824 extension, but it is not well tested yet (read: it works for me)."
1825
c6c2dc1d
PH
1826PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1827 rework some of the code of TK/09 above to avoid the hardwired use of
1828 "%lld" and "long long". Replaced the call to snprintf() with a call to
1829 string_vformat().
1830
fffffe4c
PH
1831PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1832 records point to non-existent hosts", "retry timeout exceeded", and
1833 "retry time not reached for any host after a long failure period".
ca02eafb 1834
9a26b6b2
PH
1835PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1836 experimental DomainKeys support:
1837
1838 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1839 (2) On an error such as an illegally used "control", the wrong name for
1840 the control was given.
1841
1842 These problems did NOT occur unless DomainKeys support was compiled.
1843
4aee0225
PH
1844PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1845
32d668a5
PH
1846PH/24 Added ${if match_ip condition.
1847
8187c3f3
PH
1848PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1849 databases so that it will be absolutely obvious if a crash occurs in the
1850 DB library. This is a regular occurrence (often caused by mis-matched
1851 db.h files).
1852
ff790e47 1853PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1854 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1855 picked up on a user's system that detects such things. There doesn't seem
1856 to be a gcc warning option for this - only an attribute that has to be
1857 put on the function's prototype. It seems that in Fedora Core 4 they have
1858 set this on a number of new functions. No doubt there will be more in due
1859 course.
ff790e47 1860
5417f6d1
PH
1861PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1862 specify a transport. However, if an address that was verified by such a
1863 router was the subject of a callout, Exim crashed because it tried to
1864 read the rcpt_include_affixes from the non-existent transport. Now it
1865 just assumes that the setting of that option is false. This bug was
1866 introduced by 4.51/PH/31.
1867
59cf8544
PH
1868PH/28 Changed -d+all to exclude +memory, because that information is very
1869 rarely of interest, but it makes the output a lot bigger. People tend to
1870 do -d+all out of habit.
1871
e7ad8a65
PH
1872PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1873 code in os-type was giving problems when libc.so lives in lib64, like on
1874 x86_64 Fedora Core.
1875
ade42478
PH
1876PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1877 aren't the modern standard, and it seems that some systems' include files
1878 don't always have them. Exim was already checking for some of the newer
1879 ones like T_AAAA, and defining it itself. I've added checks for all the
1880 record types that Exim uses.
1881
182ad5cf
PH
1882PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1883 not automatically generating a new one, as it is supposed to. This
1884 prevented TLS from working. If the file did exist, but contained invalid
1885 data, a new version was generated, as expected. It was only the case of a
1886 non-existent file that was broken.
1887
b0d9fc80
TK
1888TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1889 with a change in libdomainkeys > 0.64.
1890
1891TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1892 from DNS. If the selector record carries the flag, it now has
1893 precedence over the domain-wide flag.
1894
1895TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1896
47c7a64a
PH
1897PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1898 the use of a port name that isn't defined in /etc/services) occurred, the
1899 message was deferred as in a normal delivery, and thus remained on the
1900 spool, instead of being failed because of the mua_wrapper setting. This
1901 is now fixed, and I tidied up some of the mua_wrapper messages at the
1902 same time.
1903
a388bce4
SC
1904SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1905 the messages in a hash of arrays rather than using individual hashes.
1906 This is a bit cleaner and results in dramatic memory savings, albeit
1907 at a slight CPU cost.
1908
1909SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1910 as requested by Marc Sherman.
1911
1912SC/10 Eximstats: added histograms for user specified patterns as requested
1913 by Marc Sherman.
1914
0793e4ed
SC
1915SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1916
c58b88df
PH
1917PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1918 fopen() in the content-scanning modules that did not already have it.
1919
e7ad8a65 1920
7982096b
PH
1921Exim version 4.51
1922-----------------
1923
1a46a8c5
PH
1924TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1925 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1926
2f079f46 1927TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1928
1929TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1930
1931PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1932 to test Sieve filters that use "vacation".
1933
1934PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1935 that changes the way the GnuTLS parameters are stored in the cache file.
1936 The new format can be generated externally. For backward compatibility,
1937 if the data in the cache doesn't make sense, Exim assumes it has read an
1938 old-format file, and it generates new data and writes a new file. This
1939 means that you can't go back to an older release without removing the
1940 file.
1941
1942PH/03 A redirect router that has both "unseen" and "one_time" set does not
1943 work if there are any delivery delays because "one_time" forces the
1944 parent to be marked "delivered", so its unseen clone is never tried
1945 again. For this reason, Exim now forbids the simultaneous setting of
1946 these two options.
1947
1948PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1949 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1950 entry if you want to know the details. The fix, however, neglected to
1951 consider the case when local delivery batching is involved. The test for
1952 "previously delivered" was not happening when checking to see if an
1953 address could be batched with a previous (undelivered) one; under
1954 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1955 address.
1a46a8c5
PH
1956
1957PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1958 in its include files, and this causes problems building Exim.
1959
1960PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1961 header_syntax) but Exim was just ignoring anything given after a slash.
1962 In particular, this caused confusion with an attempt to use "verify =
1963 reverse_host_lookup/defer_ok". An error is now given when options are
1964 supplied for verify items that do not have them. (Maybe reverse_host_
1965 lookup should have a defer_ok option, but that's a different point.)
1966
1967PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1968 defined by RFC 821) to 2048, because there were problems with some AUTH
1969 commands, and RFC 1869 says the size should be increased for extended
1970 SMTP commands that take arguments.
1971
1972PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1973 Finch).
1974
1975PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1976 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1977
49c2d5ea
PH
1978PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1979 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1980 whatever). Otherwise the password may appear in the log. Following change
1981 PH/42 below, there is no longer a chance of it appearing in a bounce
1982 message.
49c2d5ea 1983
bf759a8b
PH
1984PH/11 Installed exipick version 20050225.0 from John Jetmore.
1985
83364d30
PH
1986PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1987 of its addresses was ever tried. (Bugzilla bug #2.)
1988
7999bbd7
PH
1989PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1990 the result incorrectly in the debug output. (It correctly added a newline
1991 to what was transported.)
1992
7dbf77c9
PH
1993TF/01 Added $received_time.
1994
74e0617f
PH
1995PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1996 commented out examples of how to interface to a virus scanner and to
1997 SpamAssassin. Also added commented examples of av_scanner and
1998 spamd_address settings.
1999
2f079f46
PH
2000PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
2001 and controls are allowed in which ACLs. There were a couple of minor
2002 errors. Some of the entries in the conditions table (which is a table of
2003 where they are NOT allowed) were getting very unwieldy; rewrote them as a
2004 negation of where the condition IS allowed.
2005
8c841523
PH
2006PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
2007
7766a4f0
PH
2008PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
2009 header file does not have a version number, so I've had to invent a new
2010 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
2011 API. The code is untested by me (my Linux distribution still has 0.3.2 of
2012 radiusclient), but it was contributed by a Radius user.
2013
8b417f2c
PH
2014PH/18 Installed Lars Mainka's patch for the support of CRL collections in
2015 files or directories, for OpenSSL.
2016
901f42cb
PH
2017PH/19 When an Exim process that is running as root has to create an Exim log
2018 file, it does so in a subprocess that runs as exim:exim so as to get the
2019 ownership right at creation (otherwise, other Exim processes might see
2020 the file with the wrong ownership). There was no test for failure of this
2021 fork() call, which would lead to the process getting stuck as it waited
2022 for a non-existent subprocess. Forks do occasionally fail when resources
2023 run out. I reviewed all the other calls to fork(); they all seem to check
2024 for failure.
2025
f9b9210e
PH
2026PH/20 When checking for unexpected SMTP input at connect time (before writing
2027 the banner), Exim was not dealing correctly with a non-positive return
2028 from the read() function. If the client had disconnected by this time,
2029 the result was a log entry for a synchronization error with an empty
2030 string after "input=" when read() returned zero. If read() returned -1
2031 (an event I could not check), uninitialized data bytes were printed.
2032 There were reports of junk text (parts of files, etc) appearing after
2033 "input=".
2034
54cdb463
PH
2035PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
2036
cf00dad6
PH
2037PH/22 Added support for macro redefinition, and (re)definition in between
2038 driver and ACL definitions.
2039
acb1b346
PH
2040PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
2041 forgetting to use the resulting value; it was using the unexpanded value.
2042
c5ddb310
PH
2043PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
2044 hadn't been configured. The fix is from Juergen Kreileder, who
2045 understands it better than I do:
2046
2047 "Here's what I see happening with three configured cyrus_sasl
2048 authenticators configured (plain, login, cram-md5):
2049
2050 On startup auth_cyrus_sasl_init() gets called for each of these.
2051 This means three calls to sasl_listmech() without a specified mech_list.
2052 => SASL tests which mechs of all available mechs actually work
2053 => three warnings about OTP not working
2054 => the returned list contains: plain, login, cram-md5, digest-md5, ...
2055
2056 With the patch, sasl_listmech() also gets called three times. But now
2057 SASL's mech_list option is set to the server_mech specified in the the
2058 authenticator. Or in other words, the answer from sasl_listmech()
2059 gets limited to just the mech you're testing for (which is different
2060 for each call.)
2061 => the return list contains just 'plain' or 'login', 'cram-md5' or
2062 nothing depending on the value of ob->server_mech.
2063
2064 I've just tested the patch: Authentication still works fine,
2065 unavailable mechs specified in the exim configuration are still
2066 caught, and the auth.log warnings about OTP are gone."
2067
31619da6
PH
2068PH/25 When debugging is enabled, the contents of the command line are added
2069 to the debugging output, even when log_selector=+arguments is not
2070 specified.
2071
bebaf0fc
PH
2072PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2073 answer is "GNU", and only if the return is "GNU/something" is the answer
2074 "Linux".
2075
475fe28a
PH
2076PH/27 $acl_verify_message is now set immediately after the failure of a
2077 verification in an ACL, and so is available in subsequent modifiers. In
2078 particular, the message can be preserved by coding like this:
2079
2080 warn !verify = sender
2081 set acl_m0 = $acl_verify_message
2082
2083 Previously, $acl_verify_message was set only while expanding "message"
2084 and "log_message" when a very denied access.
2085
7e8bec7a
PH
2086PH/28 Modified OS/os.c-Linux with
2087
2088 -#ifndef OS_LOAD_AVERAGE
2089 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2090
2091 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2092 nomenclature these days.)
2093
e4a89c47
PH
2094PH/29 Installed patch from the Sieve maintainer that adds the options
2095 sieve_useraddress and sieve_subaddress to the redirect router.
2096
5ca2a9a1
PH
2097PH/30 In these circumstances:
2098 . Two addresses routed to the same list of hosts;
2099 . First host does not offer TLS;
2100 . First host accepts first address;
2101 . First host gives temporary error to second address;
2102 . Second host offers TLS and a TLS session is established;
2103 . Second host accepts second address.
2104 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2105 and peerdn, if requested) that were in fact used only for the second
2106 address.
7e8bec7a 2107
c688b954
PH
2108PH/31 When doing a callout as part of verifying an address, Exim was not paying
2109 attention to any local part prefix or suffix that was matched by the
2110 router that accepted the address. It now behaves in the same way as it
2111 does for delivery: the affixes are removed from the local part unless
2112 rcpt_include_affixes is set on the transport.
2113
fed77020
PH
2114PH/32 Add the sender address, as F=<...>, to the log line when logging a
2115 timeout during the DATA phase of an incoming message.
2116
7fe1560f
PH
2117PH/33 Sieve envelope tests were broken for match types other than :is. I have
2118 applied a patch sanctioned by the Sieve maintainer.
c688b954 2119
ebb6e6d5
PH
2120PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2121 the uid or gid is negative. A case of a negative gid caused this to be
2122 noticed. The fix allows for either to be negative.
2123
9c4e8f60
PH
2124PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2125 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2126 overlooked.
2127
2128PH/36 The change PH/12 above was broken. Fixed it.
2129
d7174846
PH
2130PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2131 the grounds that routing the same address twice would always produce the
2132 same answer. This might have been true once, but it is certainly no
2133 longer true now. Routing a child address may depend on the previous
2134 routing that produced that child. Some complicated redirection strategies
2135 went wrong when messages had multiple recipients, and made Exim's
2136 behaviour dependent on the order in which the addresses were given.
2137
2138 I have moved the duplicate checking until after the routing is complete.
2139 Exim scans the addresses that are assigned to local and remote
2140 transports, and removes any duplicates. This means that more work will be
2141 done, as duplicates will always all be routed, but duplicates are
2142 presumably rare, so I don't expect this is of any significance.
2143
2144 For deliveries to pipes, files, and autoreplies, the duplicate checking
2145 still happens during the routing process, since they are not going to be
2146 routed further.
2147
cfe75fc3
PH
2148PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2149 It corrects a timeout issue with spamd. This is Ian's comment: "The
2150 background is that sometimes spamd either never reads data from a
2151 connection it has accepted, or it never writes response data. The exiscan
2152 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2153 blindly assumes that writes won't block so it may never time out."
2154
be22d70e
PH
2155PH/39 Allow G after quota size as well as K and M.
2156
0612b098
PH
2157PH/40 The value set for $authenticated_id in an authenticator may not contain
2158 binary zeroes or newlines because the value is written to log lines and
2159 to spool files. There was no check on this. Now the value is run through
2160 the string_printing() function so that such characters are converted to
2161 printable escape sequences.
2162
2e0c1448
PH
2163PH/41 $message_linecount is a new variable that contains the total number of
2164 lines in the message. Compare $body_linecount, which is the count for the
2165 body only.
2166
447d236c
PH
2167PH/42 Exim no longer gives details of delivery errors for specific addresses in
2168 bounce and delay warning messages, except in certain special cases, which
2169 are as follows:
2170
2171 (a) An SMTP error message from a remote host;
2172 (b) A message specified in a :fail: redirection;
2173 (c) A message specified in a "fail" command in a system filter;
2174 (d) A message specified in a FAIL return from the queryprogram router;
2175 (e) A message specified by the cannot_route_message router option.
2176
2177 In these cases only, Exim does include the error details in bounce and
2178 warning messages. There are also a few cases where bland messages such
2179 as "unrouteable address" or "local delivery error" are given.
2180
d20976dc
PH
2181PH/43 $value is now also set for the "else" part of a ${run expansion.
2182
f656d135
PH
2183PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2184 being worked on, but at least Exim now implements the latest version to
2185 play with."
2186
2e2a30b4
PH
2187PH/45 In a pipe transport, although a timeout while waiting for the pipe
2188 process to complete was treated as a delivery failure, a timeout while
2189 writing the message to the pipe was logged, but erroneously treated as a
2190 successful delivery. Such timeouts include transport filter timeouts. For
2191 consistency with the overall process timeout, these timeouts are now
2192 treated as errors, giving rise to delivery failures by default. However,
2193 there is now a new Boolean option for the pipe transport called
2194 timeout_defer, which, if set TRUE, converts the failures into defers for
2195 both kinds of timeout. A transport filter timeout is now identified in
2196 the log output.
2197
9176e9f0
PH
2198PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2199 systems where "make" and "gmake" are different, calling "gmake" at top
2200 level broke things. I've arranged for the value of $(MAKE) to be passed
2201 from the Makefile to this script so that it can call the same version of
2202 "make".
2203
7982096b 2204
bbe902f0
PH
2205A note about Exim versions 4.44 and 4.50
2206----------------------------------------
2207
2208Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2209changes of various kinds. As a consequence, a big documentation update was
2210needed. This delayed the release for rather longer than seemed good, especially
2211in the light of a couple of (minor) security issues. Therefore, the changes
2212that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2213release. So 4.44 and 4.50 are in effect two different branches that both start
2214from 4.43.
2215
2216I have left the 4.50 change log unchanged; it contains all the changes since
22174.43. The change log for 4.44 is below; many of its items are identical to
2218those for 4.50. This seems to be the most sensible way to preserve the
2219historical information.
2220
2221
f7b63901 2222Exim version 4.50
495ae4b0
PH
2223-----------------
2224
5fe762f6
PH
2225 1. Minor wording change to the doc/README.SIEVE file.
2226
139059f6 2227 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2228 computation of the current number of files was incorrect.
495ae4b0 2229
7086e875
PH
2230 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2231 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2232 place.
2233
35af9f61
PH
2234 4. Give more explanation in the error message when the command for a transport
2235 filter fails to execute.
2236
b668c215
PH
2237 5. There are several places where Exim runs a non-Exim command in a
2238 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2239 was being done only for the command run by the queryprogram router. It is
2240 now done for all such subprocesses. The other cases are: ${run, transport
2241 filters, and the commands run by the lmtp and pipe transports.
2242
a494b1e1
PH
2243 6. Added CONFIGURE_GROUP build-time option.
2244
2245 7. Some older OS have a limit of 256 on the maximum number of file
2246 descriptors. Exim was using setrlimit() to set 1000 as a large value
2247 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2248 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2249
c5fcb476
PH
2250 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2251 was an oversight, and furthermore, ever since the addition of extra
2252 controls (e.g. 4.43/32), the checks on when to allow different forms of
2253 "control" were broken. There should now be diagnostics for all cases when a
2254 control that does not make sense is encountered.
2255
69358f02
PH
2256 9. Added the /retain_sender option to "control=submission".
2257
5be20824
PH
225810. $recipients is now available in the predata ACL (oversight).
2259
eb2c0248
PH
226011. Tidy the search cache before the fork to do a delivery from a message
2261 received from the command line. Otherwise the child will trigger a lookup
2262 failure and thereby defer the delivery if it tries to use (for example) a
2263 cached ldap connection that the parent has called unbind on.
2264
2a3eea10
PH
226512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2266 of $address_data from the recipient verification was clobbered by the
2267 sender verification.
2268
226913. The value of address_data from a sender verification is now available in
2270 $sender_address_data in subsequent conditions in the ACL statement.
2271
23c7ff99
PH
227214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2273
4deaf07d
PH
227415. Added a new option "connect=<time>" to callout options, to set a different
2275 connection timeout.
2276
926e1192
PH
227716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2278 was its contents. (It was OK if the option was not defined at all.)
2279
650edc6f
PH
228017. A "Completed" log line is now written for messages that are removed from
2281 the spool by the -Mrm option.
2282
2c7db3f5
PH
228318. New variables $sender_verify_failure and $recipient_verify_failure contain
2284 information about exactly what failed.
2285
3d235903
PH
228619. Added -dd to debug only the daemon process.
2287
7c7ad977
PH
228820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2289 handles timeouts, both on the server side and network timeouts. Renamed the
2290 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2291
981756db
PH
229221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2293 It is now set to "smtps".
2294
d4eb88df
PH
229522. $host_address is now set to the target address during the checking of
2296 ignore_target_hosts.
2297
229823. When checking ignore_target_hosts for an ipliteral router, no host name was
2299 being passed; this would have caused $sender_host_name to have been used if
2300 matching the list had actually called for a host name (not very likely,
2301 since this list is usually IP addresses). A host name is now passed as
2302 "[x.x.x.x]".
2303
7d468ab8
PH
230424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2305 code that specifies a non-restarting handler (typically sigaction() in
2306 modern systems) in an attempt to fix a rare and obscure crash bug.
2307
230825. Narrowed the window for a race in the daemon that could cause it to ignore
2309 SIGCHLD signals. This is not a major problem, because they are used only to
2310 wake it up if nothing else does.
2311
62c0818f
PH
231226. A malformed maildirsize file could cause Exim to calculate negative values
2313 for the mailbox size or file count. Odd effects could occur as a result.
2314 The maildirsize information is now recalculated if the size or filecount
2315 end up negative.
2316
26034054
PH
231727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2318 support for a long time. Removed HAVE_SYS_VFS_H.
2319
af66f652
PH
232028. Installed the latest version of exipick from John Jetmore.
2321
90af77f4
PH
232229. In an address list, if the pattern was not a regular expression, an empty
2323 subject address (from a bounce message) matched only if the pattern was an
2324 empty string. Non-empty patterns were not even tested. This was the wrong
2325 because it is perfectly reasonable to use an empty address as part of a
2326 database query. An empty address is now tested by patterns that are
2327 lookups. However, all the other forms of pattern expect the subject to
2328 contain a local part and a domain, and therefore, for them, an empty
2329 address still always fails if the pattern is not itself empty.
2330
d8ef3577
PH
233130. Exim went into a mad DNS loop when attempting to do a callout where the
2332 host was specified on an smtp transport, and looking it up yielded more
2333 than one IP address.
2334
5cb8cbc6
PH
233531. Re-factored the code for checking spool and log partition space into a
2336 function that finds that data and another that does the check. The former
2337 is then used to implement four new variables: $spool_space, $log_space,
2338 $spool_inodes, and $log_inodes.
2339
14702f5b
PH
234032. The RFC2047 encoding function was originally intended for short strings
2341 such as real names; it was not keeping to the 75-character limit for
2342 encoded words that the RFC imposes. It now respects the limit, and
2343 generates multiple encoded words if necessary. To be on the safe side, I
2344 have increased the buffer size for the ${rfc2047: expansion operator from
2345 1024 to 2048 bytes.
2346
063b1e99
PH
234733. It is now permitted to omit both strings after an "if" condition; if the
2348 condition is true, the result is "true". As before, when the second string
2349 is omitted, a false condition yields an empty string. This makes it less
2350 cumbersome to write custom ACL and router conditions.
2351
652e1b65
PH
235234. Failure to deliver a bounce message always caused it to be frozen, even if
2353 there was an errors_to setting on the router. The errors_to setting is now
2354 respected.
2355
6f0c9a4f
PH
235635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2357 canonical form (fully expanded) before being placed in
2358 $sender_host_address.
2359
33397d19
PH
236036. The table in the code that translates DNS record types into text (T_A to
2361 "A" for instance) was missing entries for NS and CNAME. It is just possible
2362 that this could have caused confusion if both these types were looked up
2363 for the same domain, because the text type is used as part of Exim's
2364 per-process caching. But the chance of anyone hitting this buglet seems
2365 very small.
2366
7bb56e1f
PH
236737. The dnsdb lookup has been extended in a number of ways.
2368
2369 (1) There is a new type, "zns", which walks up the domain tree until it
2370 finds some nameserver records. It should be used with care.
2371
ea3bc19b
PH
2372 (2) There is a new type, "mxh", which is like "mx" except that it returns
2373 just the host names, not the priorities.
2374
2375 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2376 looked up. The behaviour when one of the lookups defers can be
2377 controlled by a keyword.
7bb56e1f 2378
ea3bc19b 2379 (4) It is now possible to specify the separator character for use when
7bb56e1f 2380 multiple records are returned.
33397d19 2381
0bcb2a0e
PH
238238. The dnslists ACL condition has been extended: it is now possible to supply
2383 a list of IP addresses and/or domains to be looked up in a particular DNS
2384 domain.
2385
2ac0e484
PH
238639. Added log_selector=+queue_time_overall.
2387
4e1fde53
PH
238840. When running the queue in the test harness, wait just a tad after forking a
2389 delivery process, to get repeatability of debugging output.
2390
de365ded
PH
239141. Include certificate and key file names in error message when GnuTLS fails
2392 to set them up, because the GnuTLS error message doesn't include the name
2393 of the failing file when there is a problem reading it.
2394
f05da2e8
PH
239542. Allow both -bf and -bF in the same test run.
2396
d6453af2
PH
239743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2398
f7b63901
PH
239944. The "Exiscan patch" is now merged into the mainline Exim source.
2400
240145. Sometimes the final signoff response after QUIT could fail to get
2402 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2403 < 0 before doing a fflush(). This bug looks as though it goes back to the
2404 introduction of TLS in release 3.20, but "sometimes" must have been rare
2405 because the tests only now provoked it.
2406
a444213a
PH
240746. Reset the locale to "C" after calling embedded Perl, in case it was changed
2408 (this can affect the format of dates).
2409
0ec020ea
PH
241047. exim_tidydb, when checking for the continued existence of a message for
2411 which it has found a message-specific retry record, was not finding
2412 messages that were in split spool directories. Consequently, it was
2413 deleting retry records that should have stayed in existence.
2414
b1206957
PH
241548. Steve fixed some bugs in eximstats.
2416
241749. The SPA authentication driver was not abandoning authentication and moving
2418 on to the next authenticator when an expansion was forced to fail,
2419 contradicting the general specification for all authenticators. Instead it
2420 was generating a temporary error. It now behaves as specified.
2421
26dd5a95
PH
242250. The default ordering of permitted cipher suites for GnuTLS was pessimal
2423 (the order specifies the preference for clients). The order is now AES256,
2424 AES128, 3DES, ARCFOUR128.
2425
343b2385
PH
242651. Small patch to Sieve code - explicitly set From: when generating an
2427 autoreply.
2428
1c5466b9
PH
242952. Exim crashed if a remote delivery caused a very long error message to be
2430 recorded - for instance if somebody sent an entire SpamAssassin report back
2431 as a large number of 550 error lines. This bug was coincidentally fixed by
2432 increasing the size of one of Exim's internal buffers (big_buffer) that
2433 happened as part of the Exiscan merge. However, to be on the safe side, I
2434 have made the code more robust (and fixed the comments that describe what
2435 is going on).
2436
55ee9ee3
PH
243753. Now that there can be additional text after "Completed" in log lines (if
2438 the queue_time_overall log selector is set), a one-byte patch to exigrep
2439 was needed to allow it to recognize "Completed" as not the last thing in
2440 the line.
2441
d38f8232
PH
244254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2443 patch that reportedly fixes this has been added. I am not expert enough to
2444 create a test for it. This is what the patch creator wrote:
2445
2446 "I found a little strange behaviour of ldap code when working with
2447 Windows 2003 AD Domain, where users was placed in more than one
2448 Organization Units. When I tried to give exim partial DN, the exit code
2449 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2450 But simultaneously result of request was absolutely normal ldap result,
2451 so I produce this patch..."
2452
3295e65b
PH
2453 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2454 REFERENCE, so I have modified the code to exclude the patch when that macro
2455 is not defined.
2456
7102e136
PH
245755. Some experimental protocols are using DNS PTR records for new purposes. The
2458 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2459 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2460 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2461 CAN-2005-0021
7102e136 2462
3ca0ba97
PH
246356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2464
c2bcbe20
PH
246557. Double the size of the debug message buffer (to 2048) so that more of very
2466 long debug lines gets shown.
2467
18ce445d
PH
246858. The exicyclog utility now does better if the number of log files to keep
2469 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2470
1f5b4c3d
PH
247159. Two changes related to the smtp_active_hostname option:
2472
2473 (1) $smtp_active_hostname is now available as a variable.
2474 (2) The default for smtp_banner uses $smtp_active_hostname instead
2475 of $primary_hostname.
2476
b975ba52
PH
247760. The host_aton() function is supposed to be passed a string that is known
2478 to be a valid IP address. However, in the case of IPv6 addresses, it was
2479 not checking this. This is a hostage to fortune. Exim now panics and dies
2480 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2481 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2482 components; fortuitously, this particular loophole had already been fixed
2483 by change 4.50/55 above.
2484
2485 If there are any other similar loopholes, the new check in host_aton()
2486 itself should stop them being exploited. The report I received stated that
2487 data on the command line could provoke the exploit when Exim was running as
2488 exim, but did not say which command line option was involved. All I could
2489 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2490 running as the user.
ea3a6f44 2491 CAN-2005-0021
85b87bc2
PH
2492
249361. There was a buffer overflow vulnerability in the SPA authentication code
2494 (which came originally from the Samba project). I have added a test to the
2495 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2496 CAN-2005-0022
b975ba52 2497
17ffcae7
PH
249862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2499 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2500
d95f9fdb
PH
250163. The daemon start-up calls getloadavg() while still root for those OS that
2502 need the first call to be done as root, but it missed one case: when
2503 deliver_queue_load_max is set with deliver_drop_privilege. This is
2504 necessary for the benefit of the queue runner, because there is no re-exec
2505 when deliver_drop_privilege is set.
2506
86b8287f
PH
250764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2508 This has been fixed.
2509
60dc5e56
PH
251065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2511 was in use, was not putting the data itself into the right store pool;
2512 consequently, it could be overwritten for a subsequent message in the same
2513 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2514 the caching.)
2515
533244af
PH
251666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2517
a5a28604
PH
251867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2519 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2520 the function were treating the return as a boolean value, which happened to
2521 work because 0=false and not-0=true, but is not correct code.
2522
7e634d24
PH
252368. The host_aton() function was not handling scoped IPv6 addresses (those
2524 with, for example, "%eth0" on the end) correctly.
2525
3e11c26b
PH
252669. Fixed some compiler warnings in acl.c for the bitmaps specified with
2527 negated items (that is, ~something) in unsigned ints. Some compilers
2528 apparently mutter when there is no cast.
2529
6729cf78
PH
253070. If an address verification called from an ACL failed, and did not produce a
2531 user-specific message (i.e. there was only a "system" message), nothing was
2532 put in $acl_verify_message. In this situation, it now puts the system
2533 message there.
2534
00f00ca5
PH
253571. Change 4.23/11 added synchronization checking at the start of an SMTP
2536 session; change 4.31/43 added the unwanted input to the log line - except
2537 that it did not do this in the start of session case. It now does.
2538
c9bdd01c
PH
253972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2540 This is wrong and can cause the other end to generate a synchronization
2541 error if it is another Exim or anything else that does the synchronization
2542 check. A QUIT command is no longer sent after a timeout.
2543
d43194df
PH
254473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2545 during host lookups.
2546
fe5b5d0b
PH
254774. The defer_ok option of callout verification was not working if it was used
2548 when verifying addresses in header lines, that is, for this case:
2549
2550 verify = header_sender/callout=defer_ok
2551
76a2d7ba
PH
255275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2553 those file descriptors could be used for SMTP connections. If anything
2554 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2555 could be sent to the SMTP client, causing chaos. The daemon now opens
2556 stdin, stdout, and stderr to /dev/null when it puts itself into the
2557 background.
2558
255976. Arrange for output from Perl's "warn" command to be written to Exim's main
2560 log by default. The user can override this with suitable Perl magic.
2561
04f7d5b9
PH
256277. The use of log_message on a "discard" ACL verb, which is supposed to add to
2563 the log message when discard triggers, was not working for the DATA ACL or
2564 for the non-SMTP ACL.
2565
bc60667e
PH
256678. Error message wording change in sieve.c.
2567
bb6e88ff
PH
256879. If smtp_accept_max_per_host was set, the number of connections could be
2569 restricted to fewer than expected, because the daemon was trying to set up
2570 a new connection before checking whether the processes handling previous
2571 connections had finished. The check for completed processes is now done
2572 earlier. On busy systems, this bug wouldn't be noticed because something
2573 else would have woken the daemon, and it would have reaped the completed
2574 process earlier.
2575
1e70f85b
PH
257680. If a message was submitted locally by a user whose login name contained one
2577 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2578 It caused a spool format error. I have fixed the spool reading code. A
2579 related problem was that the "from" clause in the Received: line became
2580 illegal because of the space(s). It is now covered by ${quote_local_part.
2581
258281. Included the latest eximstats from Steve (adds average sizes to HTML Top
2583 tables).
2584
4e01f9d6
PH
258582. Updated OS/Makefile-AIX as per message from Mike Meredith.
2586
1ee1cef2
PH
258783. Patch from Sieve maintainer to fix unterminated string problem in
2588 "vacation" handling.
2589
6e2b4ccc
PH
259084. Some minor changes to the Linux configuration files to help with other
2591 OS variants using glibc.
2592
8e669ac1
PH
259385. One more patch for Sieve to update vacation handling to latest spec.
2594
495ae4b0 2595
bbe902f0
PH
2596----------------------------------------------------
2597See the note above about the 4.44 and 4.50 releases.
2598----------------------------------------------------
2599
2600
2601Exim version 4.44
2602-----------------
2603
2604 1. Change 4.43/35 introduced a bug that caused file counts to be
2605 incorrectly computed when quota_filecount was set in an appendfile
2606 transport
2607
2608 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2609 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2610 place.
2611
2612 3. Give more explanation in the error message when the command for a transport
2613 filter fails to execute.
2614
2615 4. There are several places where Exim runs a non-Exim command in a
2616 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2617 was being done only for the command run by the queryprogram router. It is
2618 now done for all such subprocesses. The other cases are: ${run, transport
2619 filters, and the commands run by the lmtp and pipe transports.
2620
2621 5. Some older OS have a limit of 256 on the maximum number of file
2622 descriptors. Exim was using setrlimit() to set 1000 as a large value
2623 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2624 systems. I've change it so that if it can't get 1000, it tries for 256.
2625
2626 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2627 was an oversight, and furthermore, ever since the addition of extra
2628 controls (e.g. 4.43/32), the checks on when to allow different forms of
2629 "control" were broken. There should now be diagnostics for all cases when a
2630 control that does not make sense is encountered.
2631
2632 7. $recipients is now available in the predata ACL (oversight).
2633
2634 8. Tidy the search cache before the fork to do a delivery from a message
2635 received from the command line. Otherwise the child will trigger a lookup
2636 failure and thereby defer the delivery if it tries to use (for example) a
2637 cached ldap connection that the parent has called unbind on.
2638
2639 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2640 of $address_data from the recipient verification was clobbered by the
2641 sender verification.
2642
264310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2644 was its contents. (It was OK if the option was not defined at all.)
2645
264611. A "Completed" log line is now written for messages that are removed from
2647 the spool by the -Mrm option.
2648
264912. $host_address is now set to the target address during the checking of
2650 ignore_target_hosts.
2651
265213. When checking ignore_target_hosts for an ipliteral router, no host name was
2653 being passed; this would have caused $sender_host_name to have been used if
2654 matching the list had actually called for a host name (not very likely,
2655 since this list is usually IP addresses). A host name is now passed as
2656 "[x.x.x.x]".
2657
265814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2659 code that specifies a non-restarting handler (typically sigaction() in
2660 modern systems) in an attempt to fix a rare and obscure crash bug.
2661
266215. Narrowed the window for a race in the daemon that could cause it to ignore
2663 SIGCHLD signals. This is not a major problem, because they are used only to
2664 wake it up if nothing else does.
2665
266616. A malformed maildirsize file could cause Exim to calculate negative values
2667 for the mailbox size or file count. Odd effects could occur as a result.
2668 The maildirsize information is now recalculated if the size or filecount
2669 end up negative.
2670
267117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2672 support for a long time. Removed HAVE_SYS_VFS_H.
2673
ea3a6f44 267418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2675
267619. Allow an empty sender to be matched against a lookup in an address list.
2677 Previously the only cases considered were a regular expression, or an
2678 empty pattern.
2679
268020. Exim went into a mad DNS lookup loop when doing a callout where the
2681 host was specified on the transport, if the DNS lookup yielded more than
2682 one IP address.
2683
ea3a6f44
NM
268421. The RFC2047 encoding function was originally intended for short strings
2685 such as real names; it was not keeping to the 75-character limit for
2686 encoded words that the RFC imposes. It now respects the limit, and
2687 generates multiple encoded words if necessary. To be on the safe side, I
2688 have increased the buffer size for the ${rfc2047: expansion operator from
2689 1024 to 2048 bytes.
bbe902f0 2690
ea3a6f44
NM
269122. Failure to deliver a bounce message always caused it to be frozen, even if
2692 there was an errors_to setting on the router. The errors_to setting is now
2693 respected.
bbe902f0
PH
2694
269523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2696 canonical form (fully expanded) before being placed in
2697 $sender_host_address.
2698
269924. Updated eximstats to version 1.33
2700
ea3a6f44
NM
270125. Include certificate and key file names in error message when GnuTLS fails
2702 to set them up, because the GnuTLS error message doesn't include the name
2703 of the failing file when there is a problem reading it.
bbe902f0
PH
2704
270526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2706 As per change 25.
bbe902f0 2707
ea3a6f44
NM
270827. Reset the locale to "C" after calling embedded Perl, in case it was changed
2709 (this can affect the format of dates).
bbe902f0 2710
ea3a6f44
NM
271128. exim_tidydb, when checking for the continued existence of a message for
2712 which it has found a message-specific retry record, was not finding
2713 messages that were in split spool directories. Consequently, it was
2714 deleting retry records that should have stayed in existence.
bbe902f0
PH
2715
271629. eximstats updated to version 1.35
2717 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2718 1.35 - bugfix such that pie charts by volume are generated correctly
2719
ea3a6f44
NM
272030. The SPA authentication driver was not abandoning authentication and moving
2721 on to the next authenticator when an expansion was forced to fail,
2722 contradicting the general specification for all authenticators. Instead it
2723 was generating a temporary error. It now behaves as specified.
bbe902f0 2724
ea3a6f44
NM
272531. The default ordering of permitted cipher suites for GnuTLS was pessimal
2726 (the order specifies the preference for clients). The order is now AES256,
2727 AES128, 3DES, ARCFOUR128.
bbe902f0 2728
ea3a6f44
NM
272931. Small patch to Sieve code - explicitly set From: when generating an
2730 autoreply.
bbe902f0 2731
ea3a6f44
NM
273232. Exim crashed if a remote delivery caused a very long error message to be
2733 recorded - for instance if somebody sent an entire SpamAssassin report back
2734 as a large number of 550 error lines. This bug was coincidentally fixed by
2735 increasing the size of one of Exim's internal buffers (big_buffer) that
2736 happened as part of the Exiscan merge. However, to be on the safe side, I
2737 have made the code more robust (and fixed the comments that describe what
2738 is going on).
bbe902f0 2739
ea3a6f44
NM
274033. Some experimental protocols are using DNS PTR records for new purposes. The
2741 keys for these records are domain names, not reversed IP addresses. The
2742 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2743 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2744 CAN-2005-0021
2745
ea3a6f44
NM
274634. The host_aton() function is supposed to be passed a string that is known
2747 to be a valid IP address. However, in the case of IPv6 addresses, it was
2748 not checking this. This is a hostage to fortune. Exim now panics and dies
2749 if the condition is not met. A case was found where this could be provoked
2750 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2751 components; fortuitously, this particular loophole had already been fixed
2752 by change 4.50/55 or 4.44/33 above.
2753
2754 If there are any other similar loopholes, the new check in host_aton()
2755 itself should stop them being exploited. The report I received stated that
2756 data on the command line could provoke the exploit when Exim was running as
2757 exim, but did not say which command line option was involved. All I could
2758 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2759 running as the user.
bbe902f0
PH
2760 CAN-2005-0021
2761
ea3a6f44
NM
276235. There was a buffer overflow vulnerability in the SPA authentication code
2763 (which came originally from the Samba project). I have added a test to the
2764 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2765 CAN-2005-0022
2766
ea3a6f44
NM
276736. The daemon start-up calls getloadavg() while still root for those OS that
2768 need the first call to be done as root, but it missed one case: when
2769 deliver_queue_load_max is set with deliver_drop_privilege. This is
2770 necessary for the benefit of the queue runner, because there is no re-exec
2771 when deliver_drop_privilege is set.
bbe902f0 2772
ea3a6f44
NM
277337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2774 was in use, was not putting the data itself into the right store pool;
2775 consequently, it could be overwritten for a subsequent message in the same
2776 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2777 the caching.)
bbe902f0 2778
ea3a6f44
NM
277938. Sometimes the final signoff response after QUIT could fail to get
2780 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2781 < 0 before doing a fflush(). This bug looks as though it goes back to the
2782 introduction of TLS in release 3.20, but "sometimes" must have been rare
2783 because the tests only now provoked it.
bbe902f0
PH
2784
2785
495ae4b0
PH
2786Exim version 4.43
2787-----------------
2788
2789 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2790 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2791 Now it returns an integer. A number of calls were still expecting a T/F
2792 return. Fortuitously, in all cases, the tests worked in OK situations,
2793 which is the norm. However, things would have gone wrong on any write
2794 failures on the smtp file descriptor. This function is used when sending
2795 messages over SMTP and also when doing verify callouts.
2796
2797 2. When Exim is called to do synchronous delivery of a locally submitted
2798 message (the -odf or -odi options), it no longer closes stderr before doing
2799 the delivery.
2800
2801 3. Implemented the mua_wrapper option.
2802
2803 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2804
2805 5. Implemented the functions header_remove(), header_testname(),
2806 header_add_at_position(), and receive_remove_recipient(), and exported them
2807 to local_scan().
2808
2809 6. If an ACL "warn" statement specified the addition of headers, Exim already
2810 inserted X-ACL-Warn: at the start if there was no header name. However, it
2811 was not making this test for the second and subsequent header lines if
2812 there were newlines in the string. This meant that an invalid header could
2813 be inserted if Exim was badly configured.
2814
2815 7. Allow an ACL "warn" statement to add header lines at the start or after all
2816 the Received: headers, as well as at the end.
2817
2818 8. Added the rcpt_4xx retry error code.
2819
2820 9. Added postmaster_mailfrom=xxx to callout verification option.
2821
282210. Added mailfrom=xxxx to the callout verification option, for verify=
2823 header_sender only.
2824
282511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2826 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2827
282812. Inserted some casts to stop certain compilers warning when using pointer
2829 differences as field lengths or precisions in printf-type calls (mostly
2830 affecting debugging statements).
2831
283213. Added optional readline() support for -be (dynamically loaded).
2833
283414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2835 same clock tick as a message's arrival, so that its received time was the
2836 same as the "first fail" time on the retry record, and that message
2837 remained on the queue past the ultimate address timeout, every queue runner
2838 would try a delivery (because it was past the ultimate address timeout) but
2839 after another failure, the ultimate address timeout, which should have then
2840 bounced the address, did not kick in. This was a "< instead of <=" error;
2841 in most cases the first failure would have been in the next clock tick
2842 after the received time, and all would be well.
2843
284415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2845 being recognized when the domain list was tested by the match_domain
2846 condition in an expansion string.
2847
284816. Added the ${str2b64: operator.
2849
285017. Exim was always calling setrlimit() to set a large limit for the number of
2851 processes, without checking whether the existing limit was already
2852 adequate. (It did check for the limit on file descriptors.) Furthermore,
2853 errors from getrlimit() and setrlimit() were being ignored. Now they are
2854 logged to the main and panic logs, but Exim does carry on, to try to do its
2855 job under whatever limits there are.
2856
285718. Imported PCRE 5.0.
2858
285919. Trivial typo in log message " temporarily refused connection" (the leading
2860 space).
2861
286220. If the log selector return_path_on_delivery was set and an address was
2863 redirected to /dev/null, the delivery process crashed because it assumed
2864 that a return path would always be set for a "successful" delivery. In this
2865 case, the whole delivery is bypassed as an optimization, and therefore no
2866 return path is set.
2867
286821. Internal re-arrangement: the function for sending a challenge and reading
2869 a response while authentication was assuming a zero-terminated challenge
2870 string. It's now changed to take a pointer and a length, to allow for
2871 binary data in such strings.
2872
287322. Added the cyrus_sasl authenticator (code supplied by MBM).
2874
287523. Exim was not respecting finduser_retries when seeking the login of the
2876 uid under which it was called; it was always trying 10 times. (The default
2877 setting of finduser_retries is zero.) Also, it was sleeping after the final
2878 failure, which is pointless.
2879
288024. Implemented tls_on_connect_ports.
2881
288225. Implemented acl_smtp_predata.
2883
288426. If the domain in control=submission is set empty, Exim assumes that the
2885 authenticated id is a complete email address when it generates From: or
2886 Sender: header lines.
2887
288827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2889 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2890 chown and chgrp in /bin and hostname in /usr/bin.
2891
289228. Exim was keeping the "process log" file open after each use, just as it
2893 does for the main log. This opens the possibility of it remaining open for
2894 long periods when the USR1 signal hits a daemon. Occasional processlog
2895 errors were reported, that could have been caused by this. Anyway, it seems
2896 much more sensible not to leave this file open at all, so that is what now
2897 happens.
2898
289929. The long-running daemon process does not normally write to the log once it
2900 has entered its main loop, and it closes the log before doing so. This is
2901 so that log files can straightforwardly be renamed and moved. However,
2902 there are a couple of unusual error situations where the daemon does write
2903 log entries, and I had neglected to close the log afterwards.
2904
290530. The text of an SMTP error response that was received during a remote
2906 delivery was being truncated at 512 bytes. This is too short for some of
2907 the long messages that one sometimes sees. I've increased the limit to
2908 1024.
2909
291031. It is now possible to make retry rules that apply only when a message has a
2911 specific sender, in particular, an empty sender.
2912
291332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2914 it possible to be selective about when SMTP synchronization is enforced.
2915
291633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2917
291832. Implemented hosts_connection_nolog.
2919
292033. Added an ACL for QUIT.
2921
292234. Setting "delay_warning=" to disable warnings was not working; it gave a
2923 syntax error.
2924
292535. Added mailbox_size and mailbox_filecount to appendfile.
2926
292736. Added control = no_multiline_responses to ACLs.
2928
292937. There was a bug in the logic of the code that waits for the clock to tick
2930 in the case where the clock went backwards by a substantial amount such
2931 that the microsecond fraction of "now" was more than the microsecond
2932 fraction of "then" (but the whole seconds number was less).
2933
293438. Added support for the libradius Radius client library this is found on
2935 FreeBSD (previously only the radiusclient library was supported).
2936
2937
2938Exim version 4.42
2939-----------------
2940
2941 1. When certain lookups returned multiple values in the form name=value, the
2942 quoting of the values was not always being done properly. Specifically:
2943 (a) If the value started with a double quote, but contained no whitespace,
2944 it was not quoted.
2945 (b) If the value contained whitespace other than a space character (i.e.
2946 tabs or newlines or carriage returns) it was not quoted.
2947 This fix has been applied to the mysql and pgsql lookups by writing a
2948 separate quoting function and calling it from the lookup code. The fix
2949 should probably also be applied to nisplus, ibase and oracle lookups, but
2950 since I cannot test any of those, I have not disturbed their existing code.
2951
2952 2. A hit in the callout cache for a specific address caused a log line with no
2953 reason for rejecting RCPT. Now it says "Previous (cached) callout
2954 verification failure".
2955
2956 3. There was an off-by-one bug in the queryprogram router. An over-long
2957 return line was truncated at 256 instead of 255 characters, thereby
2958 overflowing its buffer with the terminating zero. As well as fixing this, I
2959 have increased the buffer size to 1024 (and made a note to document this).
2960
2961 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2962 when Exim is waiting for an SMTP response from a remote server, Exim
2963 restarts its select() call on the socket, thereby resetting its timeout.
2964 This is not a problem when such interrupts are rare. Somebody set up a cron
2965 job to run exiwhat every 2 minutes, which is less than the normal select()
2966 timeout (5 or 10 minutes). This meant that the select() timeout never
2967 kicked in because it was always reset. I have fixed this by comparing the
2968 time when an interrupt arrives with the time at the start of the first call
2969 to select(). If more time than the timeout has elapsed, the interrupt is
2970 treated as a timeout.
2971
2972 5. Some internal re-factoring in preparation for the addition of Sieve
2973 extensions (by MH). In particular, the "personal" test is moved to a
2974 separate function, and given an option for scanning Cc: and Bcc: (which is
2975 not set for Exim filters).
2976
2977 6. When Exim created an email address using the login of the caller as the
2978 local part (e.g. when creating a From: or Sender: header line), it was not
2979 quoting the local part when it contained special characters such as @.
2980
2981 7. Installed new OpenBSD configuration files.
2982
2983 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2984 try to make them clearer.
2985
2986 9. Callout options, other than the timeout value, were being ignored when
2987 verifying sender addresses in header lines. For example, when using
2988
2989 verify = header_sender/callout=no_cache
2990
2991 the cache was (incorrectly) being used.
2992
299310. Added a missing instance of ${EXE} to the exim_install script; this affects
2994 only the Cygwin environment.
2995
299611. When return_path_on_delivery was set as a log selector, if different remote
2997 addresses in the same message used different return paths and parallel
2998 remote delivery occurred, the wrong values would sometimes be logged.
2999 (Whenever a remote delivery process finished, the return path value from
3000 the most recently started remote delivery process was logged.)
3001
300212. RFC 3848 specifies standard names for the "with" phrase in Received: header
3003 lines when AUTH and/or TLS are in use. This is the "received protocol"
3004 field. Exim used to use "asmtp" for authenticated SMTP, without any
3005 indication (in the protocol name) for TLS use. Now it follows the RFC and
3006 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
3007 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
3008 names appear in log lines as well as in Received: header lines.
3009
301013. Installed MH's patches for Sieve to add the "copy" and "vacation"
3011 extensions, and comparison tests, and to fix some bugs.
3012
301314. Changes to the "personal" filter test:
3014
3015 (1) The test was buggy in that it was just doing the equivalent of
3016 "contains" tests on header lines. For example, if a user's address was
3017 anne@some.where, the "personal" test would incorrectly be true for
3018
3019 To: susanne@some.where
3020
3021 This test is now done by extracting each address from the header in turn,
3022 and checking the entire address. Other tests that are part of "personal"
3023 are now done using regular expressions (for example, to check local parts
3024 of addresses in From: header lines).
3025
3026 (2) The list of non-personal local parts in From: addresses has been
3027 extended to include "listserv", "majordomo", "*-request", and "owner-*",
3028 taken from the Sieve specification recommendations.
3029
3030 (3) If the message contains any header line starting with "List-" it is
3031 treated as non-personal.
3032
3033 (4) The test for "circular" in the Subject: header line has been removed
3034 because it now seems ill-conceived.
3035
303615. Minor typos in src/EDITME comments corrected.
3037
303816. Installed latest exipick from John Jetmore.
3039
304017. If headers_add on a router specified a text string that was too long for
3041 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
3042 of string_sprintf() is now avoided.
3043
304418. $message_body_size was not set (it was always zero) when running the DATA
3045 ACL and the local_scan() function.
3046
304719. For the "mail" command in an Exim filter, no default was being set for
3048 the once_repeat time, causing a random time value to be used if "once" was
3049 specified. (If the value happened to be <= 0, no repeat happened.) The
3050 default is now 0s, meaning "never repeat". The "vacation" command was OK
3051 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
3052 (I found it when inspecting the code).
3053
305420. There is now an overall timeout for performing a callout verification. It
3055 defaults to 4 times the callout timeout, which applies to individual SMTP
3056 commands during the callout. The overall timeout applies when there is more
3057 than one host that can be tried. The timeout is checked before trying the
3058 next host. This prevents very long delays if there are a large number of
3059 hosts and all are timing out (e.g. when the network connections are timing
3060 out). The value of the overall timeout can be changed by specifying an
3061 additional sub-option for "callout", called "maxwait". For example:
3062
3063 verify = sender/callout=5s,maxwait=20s
3064
306521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3066 to the end before writing, but this should make it even safer).
3067
306822. Exim was forgetting that it had advertised PIPELINING for the second and
3069 subsequent messages on an SMTP connection. It was also not resetting its
3070 memory on STARTTLS and an internal HELO.
3071
307223. When Exim logs an SMTP synchronization error within a session, it now
3073 records whether PIPELINING has been advertised or not.
3074
307524. Added 3 instances of "(long int)" casts to time_t variables that were being
3076 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3077 rather than long int.
3078
307925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3080
308126. Added the never_mail option to autoreply.
3082
3083
3084Exim version 4.41
3085-----------------
3086
3087 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3088 crash if the getsockname() call failed; this can happen if a connection is
3089 closed very soon after it is established. The problem was simply in the
3090 order in which certain operations were done, causing Exim to try to write
3091 to the SMTP stream before it had set up the file descriptor. The bug has
3092 been fixed by making things happen in the correct order.
3093
3094
3095Exim version 4.40
3096-----------------
3097
3098 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3099 before the connection was closed, thus losing the rejection response.
3100
3101 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3102 some early Solaris releases, but causes trouble in current releases where
3103 socklen_t is defined.
3104
3105 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3106 always exist.
3107
3108 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3109 configured.
3110
3111 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3112 that releasing the top of it at the end releases what was used for sub-
3113 expansions (unless the block got too big). However, discard this block if
3114 the first thing is a variable or header, so that we can use its block when
3115 it is dynamic (useful for very large $message_headers, for example).
3116
3117 6. Lookups now cache *every* query, not just the most recent. A new, separate
3118 store pool is used for this. It can be recovered when all lookup caches are
3119 flushed. Lookups now release memory at the end of their result strings.
3120 This has involved some general refactoring of the lookup sources.
3121
3122 7. Some code has been added to the store_xxx() functions to reduce the amount
3123 of flapping under certain conditions.
3124
3125 8. log_incoming_interface used to affect only the <= reception log lines. Now
3126 it causes the local interface and port to be added to several more SMTP log
3127 lines, for example "SMTP connection from", and rejection lines.
3128
3129 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3130
313110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3132
313311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3134 could be overwritten at the end of the current message (or the start of a
3135 new message if it was set in a HELO ACL). The value is now preserved for
3136 the duration of the SMTP connection.
3137
313812. If a transport had a headers_rewrite setting, and a matching header line
3139 contained an unqualified address, that address was qualified, even if it
3140 did not match any rewriting rules. The underlying bug was that the values
3141 of the flags that permit the existence of unqualified sender and recipient
3142 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3143 non-local messages, and by -bnq for local messages) were not being
3144 preserved with the message after it was received.
3145
314613. When Exim was logging an SMTP synchronization error, it could sometimes log
3147 "next input=" as part of the text comprising the host identity instead of
3148 the correct text. The code was using the same buffer for two different
3149 strings. However, depending on which order the printing function evaluated
3150 its arguments, the bug did not always show up. Under Linux, for example, my
3151 test suite worked just fine.
3152
315314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3154 doesn't work with some older versions of Perl. It has been changed to "my",
3155 which in any case is probably the better facility to use.
3156
315715. A really picky compiler found some instances of statements for creating
3158 error messages that either had too many or two few arguments for the format
3159 string.
3160
316116. The size of the buffer for calls to the DNS resolver has been increased
3162 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3163 for addresses that have a lot of PTR records. This alleviates a problem; it
3164 does not fully solve it.
3165
316617. A dnsdb lookup for PTR records that receives more data than will fit in the
3167 buffer now truncates the list and logs the incident, which is the same
3168 action as happens when Exim is looking up a host name and its aliases.
3169 Previously in this situation something unpredictable would happen;
3170 sometimes it was "internal error: store_reset failed".
3171
317218. If a server dropped the connection unexpectedly when an Exim client was
3173 using GnuTLS and trying to read a response, the client delivery process
3174 crashed while trying to generate an error log message.
3175
317619. If a "warn" verb in an ACL added multiple headers to a message in a single
3177 string, for example:
3178
3179 warn message = H1: something\nH2: something
3180
3181 the text was added as a single header line from Exim's point of view
3182 though it ended up OK in the delivered message. However, searching for the
3183 second and subsequent header lines using $h_h2: did not work. This has been
3184 fixed. Similarly, if a system filter added multiple headers in this way,
3185 the routers could not see them.
3186
318720. Expanded the error message when iplsearch is called with an invalid key to
3188 suggest using net-iplsearch in a host list.
3189
319021. When running tests using -bh, any delays imposed by "delay" modifiers in
3191 ACLs are no longer actually imposed (and a message to that effect is
3192 output).
3193
319422. If a "gecos" field in a passwd entry contained escaped characters, in
3195 particular, if it contained a \" sequence, Exim got it wrong when building
3196 a From: or a Sender: header from that name. A second bug also caused
3197 incorrect handling when an unquoted " was present following a character
3198 that needed quoting.
3199
320023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3201 was not being matched caselessly.
3202
320324. Arranged for all hyphens in the exim.8 source to be escaped with
3204 backslashes.
3205
320625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3207 properly. Recipient callout cache records were still being keyed to include
3208 the sender, even when use_sender was set false. This led to far more
3209 callouts that were necessary. The sender is no longer included in the key
3210 when use_sender is false.
3211
321226. Added "control = submission" modifier to ACLs.
3213
321427. Added the ${base62d: operator to decode base 62 numbers.
3215
321628. dnsdb lookups can now access SRV records.
3217
321829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3219 the configuration file.
3220
322130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3222 (-v) mode. This makes the output for a verbose queue run more intelligible.
3223
322431. Added a use_postmaster feature to recipient callouts.
3225
322632. Added the $body_zerocount variable, containing the number of binary zero
3227 bytes in the message body.
3228
322933. The time of last modification of the "new" subdirectory is now used as the
3230 "mailbox time last read" when there is a quota error for a maildir
3231 delivery.
3232
323334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3234
323535. Added +ignore_unknown as a special item in host lists.
3236
323736. Code for decoding IPv6 addresses in host lists is now included, even if
3238 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3239 address was recognized as an IP address, but was then not correctly decoded
3240 into binary, causing unexpected and incorrect effects when compared with
3241 another IP address.
3242
3243
3244Exim version 4.34
3245-----------------
3246
3247 1. Very minor rewording of debugging text in manualroute to say "list of
3248 hosts" instead of "hostlist".
3249
3250 2. If verify=header_syntax was set, and a header line with an unqualified
3251 address (no domain) and a large number of spaces between the end of the
3252 name and the colon was received, the reception process suffered a buffer
3253 overflow, and (when I tested it) crashed. This was caused by some obsolete
3254 code that should have been removed. The fix is to remove it!
3255
3256 3. When running in the test harness, delay a bit after writing a bounce
3257 message to get a bit more predictability in the log output.
3258
3259 4. Added a call to search_tidyup() just before forking a reception process. In
3260 theory, someone could use a lookup in the expansion of smtp_accept_max_
3261 per_host which, without the tidyup, could leave open a database connection.
3262
3263 5. Added the variables $recipient_data and $sender_data which get set from a
3264 lookup success in an ACL "recipients" or "senders" condition, or a router
3265 "senders" option, similar to $domain_data and $local_part_data.
3266
3267 6. Moved the writing of debug_print from before to after the "senders" test
3268 for routers.
3269
3270 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3271 problems for message scanning, either using a data ACL, or using
3272 local_scan() because the Received: header was not generated till after they
3273 were called (in order to set the time as the time of reception completion).
3274 I have revised the way this works. The header is now generated after the
3275 body is received, but before the ACL or local_scan() are called. After they
3276 are run, the timestamp in the header is updated.
3277
3278
3279Exim version 4.33
3280-----------------
3281
3282 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3283 before starting a queue runner without re-exec. This happened only when
3284 deliver_drop_privilege was set or when the Exim user was set to root. The
3285 effect of the bug was that timeouts during subsequent deliveries caused
3286 crashes instead of being properly handled. The handler is now left at its
3287 default (and expected) setting.
3288
3289 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3290 message, again when deliver_drop_privilege is set or Exim is run as root.
3291 The bug described in (1) was not present in this case, but the tidying up
3292 of the other signals was missing. I have made the two cases consistent.
3293
3294 3. The ignore_target_hosts setting on a manualroute router was being ignored
3295 for hosts that were looked up using the /MX notation.
3296
3297 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3298 in domain lists.
3299
3300 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3301 operated on the sender address. After changing the $sender_address to <>
3302 for the sender address verify, Exim was re-instated it as the original
3303 (before rewriting) address, but remembering that it had rewritten it, so it
3304 wasn't rewriting it again. This bug also had the effect of breaking the
3305 sender address verification caching when the sender address was rewritten.
3306
3307 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3308 This has been changed so that if the ip literal address matches
3309 ignore_target_hosts, the router declines.
3310
3311 7. Added expansion conditions match_domain, match_address, and match_local_
3312 part (NOT match_host).
3313
3314 8. The placeholder for the Received: header didn't have a length field set.
3315
3316 9. Added code to Exim itself and to exim_lock to test for a specific race
3317 condition that could lead to file corruption when using MBX delivery. The
3318 issue is with the lockfile that is created in /tmp. If this file is removed
3319 after a process has opened it but before that process has acquired a lock,
3320 there is the potential for a second process to recreate the file and also
3321 acquire a lock. This could lead to two Exim processes writing to the file
3322 at the same time. The added code performs the same test as UW imapd; it
3323 checks after acquiring the lock that its file descriptor still refers to
3324 the same named file.
3325
332610. The buffer for building added header lines was of fixed size, 8192 bytes.
3327 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3328 when Exim is built.
3329
333011. Added the smtp_active_hostname option. If used, this will typically be made
3331 to depend on the incoming interface address. Because $interface_address is
3332 not set up until the daemon has forked a reception process, error responses
3333 that can happen earlier (such as "too many connections") no longer contain
3334 a host name.
3335
333612. If an expansion in a condition on a "warn" statement fails because a lookup
3337 defers, the "warn" statement is abandoned, and the next ACL statement is
3338 processed. Previously this caused the whole ACL to be aborted.
3339
334013. Added the iplsearch lookup type.
3341
334214. Added ident_timeout as a log selector.
3343
334415. Added tls_certificate_verified as a log selector.
3345
334616. Added a global option tls_require_ciphers (compare the smtp transport
3347 option of the same name). This controls incoming TLS connections.
3348
334917. I finally figured out how to make tls_require_ciphers do a similar thing
3350 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3351 before starting the TLS session.
3352
335318. Tabs are now shown as \t in -bP output.
3354
335519. If the log selector return_path_on_delivery was set, Exim crashed when
3356 bouncing a message because it had too many Received: header lines.
3357
335820. If two routers both had headers_remove settings, and the first one included
3359 a superfluous trailing colon, the final name in the first list and the
3360 first name in the second list were incorrectly joined into one item (with a
3361 colon in the middle).
3362
3363
3364Exim version 4.32
3365-----------------
3366
3367 1. Added -C and -D options to the exinext utility, mainly to make it easier
3368 to include in the automated testing, but these could be helpful when
3369 multiple configurations are in use.
3370
3371 2. The exinext utility was not formatting the output nicely when there was
3372 an alternate port involved in the retry record key, nor when there was a
3373 message id as well (for retries that were specific to a specific message
3374 and a specific host). It was also confused by IPv6 addresses, because of
3375 the additional colons they contain. I have fixed the IPv4 problem, and
3376 patched it up to do a reasonable job for IPv6.
3377
3378 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3379 delivery, the log line now contains "pipelined" if PIPELINING was used.
3380
3381 4. An SMTP transport process used to panic and die if the bind() call to set
3382 an explicit outgoing interface failed. This has been changed; it is now
3383 treated in the same way as a connect() failure.
3384
3385 5. A reference to $sender_host_name in the part of a conditional expansion
3386 that was being skipped was still causing a DNS lookup. This no longer
3387 occurs.
3388
3389 6. The def: expansion condition was not recognizing references to header lines
3390 that used bh_ and bheader_.
3391
3392 7. Added the _cache feature to named lists.
3393
3394 8. The code for checking quota_filecount in the appendfile transport was
3395 allowing one more file than it should have been.
3396
3397 9. For compatibility with Sendmail, the command line option
3398
3399 -prval:sval
3400
3401 is equivalent to
3402
3403 -oMr rval -oMs sval
3404
3405 and sets the incoming protocol and host name (for trusted callers). The
3406 host name and its colon can be omitted when only the protocol is to be set.
3407 Note the Exim already has two private options, -pd and -ps, that refer to
3408 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3409 "s", but I don't think that's a major issue.
3410
341110. A number of refactoring changes to the code, none of which should affect
3412 Exim's behaviour:
3413
3414 (a) The number of logging options was getting close to filling up the
3415 32-bit word that was used as a bit map. I have split them into two classes:
3416 those that are passed in the argument to log_write(), and those that are
3417 only ever tested independently outside of that function. These are now in
3418 separate 32-bit words, so there is plenty of room for expansion again.
3419 There is no change in the user interface or the logging behaviour.
3420
3421 (b) When building, for example, log lines, the code previously used a
3422 macro that called string_cat() twice, in order to add two strings. This is
3423 not really sufficiently general. Furthermore, there was one instance where
3424 it was actually wrong because one of the argument was used twice, and in
3425 one call a function was used. (As it happened, calling the function twice
3426 did not affect the overall behaviour.) The macro has been replaced by a
3427 function that can join an arbitrary number of extra strings onto a growing
3428 string.
3429
3430 (c) The code for expansion conditions now uses a table and a binary chop
3431 instead of a serial search (which was left over from when there were very
3432 few conditions). Also, it now recognizes conditions like "pam" even when
3433 the relevant support is not compiled in: a suitably worded error message is
3434 given if an attempt is made to use such a condition.
3435
343611. Added ${time_interval:xxxxx}.
3437
343812. A bug was causing one of the ddress fields not to be passed back correctly
3439 from remote delivery subprocesses. The field in question was not being
3440 subsequently used, so this caused to problems in practice.
3441
344213. Added new log selectors queue_time and deliver_time.
3443
344414. Might have fixed a bug in maildirsizefile handling that threw up
3445 "unexpected character" debug warnings, and recalculated the data
3446 unnecessarily. In any case, I expanded the warning message to give more
3447 information.
3448
344915. Added the message "Restricted characters in address" to the statements in
3450 the default ACL that block characters like @ and % in local parts.
3451
345216. Change 71 for release 4.31 proved to be much less benign that I imagined.
3453 Three changes have been made:
3454
3455 (a) There was a serious bug; a negative response to MAIL caused the whole
3456 recipient domain to be cached as invalid, thereby blocking all messages
3457 to all local parts at the same domain, from all senders. This bug has
3458 been fixed. The domain is no longer cached after a negative response to
3459 MAIL if the sender used is not empty.
3460
3461 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3462 been restored.
3463
3464 (c) A new callout option, "use_sender" has been added for people who want
3465 the modified behaviour.
3466
3467
3468Exim version 4.31
3469-----------------
3470
3471 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3472 Larry Rosenman.
3473
3474 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3475 indeed breaks things for older releases.
3476
3477 3. Added additional logging to the case where there is a problem reading data
3478 from a filter that is running in a subprocess using a pipe, in order to
3479 try to track down a specific problem.
3480
3481 4. Testing facility fudge: when running in the test harness and attempting
3482 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3483 getting "No route to host". Convert this to a timeout.
3484
3485 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3486 warning.
3487
3488 6. Some OS don't have socklen_t but use size_t instead. This affects the
3489 fifth argument of getsockopt() amongst other things. This is now
3490 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3491 can be set for individual OS. I have set it for SunOS5, OSF1, and
3492 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3493 some earlier ones do not.
3494
3495 7. Change 4.30/15 was not doing the test caselessly.
3496
3497 8. The standard form for an IPv6 address literal was being rejected by address
3498 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3499 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3500 this, as well as the form without the "IPv6" on the front (but only when
3501 address literals are enabled, of course).
3502
3503 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3504
350510. Exim crashed if a message with an empty sender address specified by -f
3506 encountered a router with an errors_to setting. This could be provoked only
3507 by a command such as
3508
3509 exim -f "" ...
3510
3511 where an empty string was supplied; "<>" did not hit this bug.
3512
351311. Installed PCRE release 4.5.
3514
351512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3516 remained set. It is now erased.
3517
351813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3519 times from message ids (which are base 36 rather than the normal 62).
3520
352114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3522 were being counted as actual protocol errors, and logged if the log
3523 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3524 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3525 and DATA following a set of rejected RCPTs do not count as protocol errors.
3526 In other words, Exim assumes they were pipelined, though this may not
3527 actually be the case. Of course, in all cases the client gets an
3528 appropriate error code.
3529
353015. If a lookup fails in an ACL condition, a message about the failure may
3531 be available; it is used if testing the ACL cannot continue, because most
3532 such messages specify what the cause of the deferral is. However, some
3533 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3534 that caused an old message to be retained and used if a later statement
3535 caused a defer, replacing the real cause of the deferral.
3536
353716. If an IP address had so many PTR records that the DNS lookup buffer
3538 was not large enough to hold them, Exim could crash while trying to process
3539 the truncated data. It now detects and logs this case.
3540
354117. Further to 4.21/58, another change has been made: if (and only if) the
3542 first line of a message (the first header line) ends with CRLF, a bare LF
3543 in a subsequent header line has a space inserted after it, so as not to
3544 terminate the header.
3545
354618. Refactoring: tidied an ugly bit of code in appendfile that copied data
3547 unnecessarily, used atoi() instead of strtol(), and didn't check the
3548 termination when getting file sizes from file names by regex.
3549
355019. Completely re-implemented the support for maildirsize files, in the light
3551 of a number of problems with the previous contributed implementation
3552 (4.30/29). In particular:
3553
3554 . If the quota is zero, the maildirsize file is maintained, but no quota is
3555 imposed.
3556
3557 . If the maildir directory does not exist, it is created before any attempt
3558 to write a maildirsize file.
3559