Adapt PRVS BATV scheme address format to latest draft version
[exim.git] / doc / doc-txt / ChangeLog
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6a3bceb1 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.506 2007/05/08 13:08:22 ph10 Exp $
495ae4b0
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
eb4c0de6
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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
eb4c0de6 28
b4ed4da0
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29Exim version 4.67
30-----------------
31
22ad45c9
MH
32MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
33 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
34 Jan Srzednicki.
35
b4ed4da0
PH
36PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
37 issue a MAIL command.
38
431b7361
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39PH/02 In an ACL statement such as
40
41 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
42
43 if a client was not listed at all, or was listed with a value other than
44 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
45 the condition was not true (as it should be), so access was not denied.
46 The bug was that the ! inversion was incorrectly passed on to the second
47 item. This has been fixed.
48
49PH/03 Added additional dnslists conditions == and =& which are different from
50 = and & when the dns lookup returns more than one IP address.
51
83da1223
PH
52PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
53 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
54
54fc8428
PH
55PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
56 FSYNC, which compiles an option called disable_fsync that allows for
57 bypassing fsync(). The documentation is heavily laced with warnings.
58
34c5e8dd
SC
59SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
60
bbe15da8
PH
61PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
62 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
63 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
64 including adding "make clean"; (3) Added -fPIC when compiling the test
65 dynamically loaded module, to get rid of a warning.
66
0e8a9471
MH
67MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
68 message fails, move_frozen_messages = true and ignore_bounce_errors_after
69 = 0s. The bug is otherwise harmless.
70
f0872424
PH
71PH/07 There was a bug in the dovecot authenticator such that the value of
72 $auth1 could be overwritten, and so not correctly preserved, after a
73 successful authentication. This usually meant that the value preserved by
74 the server_setid option was incorrect.
75
b01dd148
PH
76PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
77
6bf342e1
PH
78PH/09 Installed PCRE release 7.0.
79
273f34d0
PH
80PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
81 run for batched SMTP input. It is now run at the start of every message
82 in the batch. While fixing this I discovered that the process information
83 (output by running exiwhat) was not always getting set for -bs and -bS
84 input. This is fixed, and it now also says "batched" for BSMTP.
85
cf8b11a5
PH
86PH/11 Added control=no_pipelining.
87
41c7c167
PH
88PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
89 patch, slightly modified), and move the expansion of helo_data till after
90 the connection is made in the smtp transport (so it can use these
91 values).
92
9c57cbc0
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93PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
94
f3f065bb
PH
95PH/14 Added log_selector = +pid.
96
047bdd8c
PH
97PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
98
0ce9abe6
PH
99PH/16 Add ${if forany and ${if forall.
100
0e22dfd1
PH
101PH/17 Added dsn_from option to vary the From: line in DSNs.
102
4c590bd1
PH
103PH/18 Flush SMTP output before performing a callout, unless control =
104 no_callout_flush is set.
105
09945f1e
PH
106PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
107 was true (the default) a successful delivery failed to delete the retry
108 item, thus causing premature timeout of the address. The bug is now
109 fixed.
110
c51b8e75
PH
111PH/20 Added hosts_avoid_pipelining to the smtp transport.
112
e28326d8
PH
113PH/21 Long custom messages for fakedefer and fakereject are now split up
114 into multiline reponses in the same way that messages for "deny" and
115 other ACL rejections are.
116
75b1493f
PH
117PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
118 with slight modification.
119
7c5214ec
PH
120PH/23 Applied sieve patches from the maintainer "tracking the latest notify
121 draft, changing the syntax and factoring some duplicate code".
122
4311097e
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123PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
124 for deliveries of the second and subsequent messages over the same SMTP
125 connection.
126
29f89cad
PH
127PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
128 ${reduce, with only minor "tidies".
129
5e687460
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130SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
131
c3611384
PH
132PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
133 expansion side effects.
134
5a11a7b4
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135PH/27 When a message times out after an over-quota error from an Exim-imposed
136 quota, the bounce message says "mailbox is full". This message was not
137 being given when it was a system quota that was exceeded. It now should
138 be the same.
139
0e20aff9
MH
140MH/03 Made $recipients available in local_scan(). local_scan() already has
141 better access to the recipient list through recipients_list[], but
142 $recipients can be useful in postmaster-provided expansion strings.
143
ca86f471
PH
144PH/28 The $smtp_command and $smtp_command_argument variables were not correct
145 in the case of a MAIL command with additional options following the
146 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
147 were accidentally chopped off.
148
a14e5636
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149PH/29 SMTP synchronization checks are implemented when a command is read -
150 there is a check that no more input is waiting when there shouldn't be
151 any. However, for some commands, a delay in an ACL can mean that it is
152 some time before the response is written. In this time, more input might
153 arrive, invalidly. So now there are extra checks after an ACL has run for
154 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
155 pipelining has not been advertised.
156
ec95d1a6
PH
157PH/30 MH's patch to allow iscntrl() characters to be list separators.
158
42855d71
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159PH/31 Unlike :fail:, a custom message specified with :defer: was not being
160 returned in the SMTP response when smtp_return_error_details was false.
161 This has been fixed.
162
57c2c631
PH
163PH/32 Change the Dovecot authenticator to use read() and write() on the socket
164 instead of the C I/O that was originally supplied, because problems were
165 reported on Solaris.
166
58c01c94
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167PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
168 Exim which did not show up earlier: it was assuming that a call to
169 SSL_CTX_set_info_callback() might give an error value. In fact, there is
170 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
171 was a macro that became an assignment, so it seemed to work. This has
172 changed to a proper function call with a void return, hence the compile
173 error. Exim's code has been fixed.
174
dee5a20a
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175PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
176 cpus.
177
d2ee6114
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178PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
179
b2d5182b
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180PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
181
79749a79
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182PH/37 If a message is not accepted after it has had an id assigned (e.g.
183 because it turns out to be too big or there is a timeout) there is no
3ce62588
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184 "Completed" line in the log. When some messages of this type were
185 selected by exigrep, they were listed as "not completed". Others were
186 picked up by some special patterns. I have improved the selection
187 criteria to be more general.
79749a79 188
c456d9bb
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189PH/38 The host_find_failed option in the manualroute router can now be set
190 to "ignore", to completely ignore a host whose IP address cannot be
191 found. If all hosts are ignored, the behaviour is controlled by the new
192 host_all_ignored option.
193
cd9868ec
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194PH/39 In a list of hosts for manualroute, if one item (either because of multi-
195 homing or because of multiple MX records with /mx) generated more than
196 one IP address, and the following item turned out to be the local host,
197 all the secondary addresses of the first item were incorrectly removed
198 from the list, along with the local host and any following hosts (which
199 is what is supposed to happen).
200
ebeaf996
PH
201PH/40 When Exim receives a message, it writes the login name, uid, and gid of
202 whoever called Exim into the -H file. In the case of the daemon it was
203 behaving confusingly. When first started, it used values for whoever
204 started the daemon, but after a SIGHUP it used the Exim user (because it
205 calls itself on a restart). I have changed the code so that it now always
206 uses the Exim user.
207
2679d413
PH
208PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
209 message are rejected with the same error (e.g. no authentication or bad
210 sender address), and a DATA command is nevertheless sent (as can happen
211 with PIPELINING or a stupid MUA), the error message that was given to the
212 RCPT commands is included in the rejection of the DATA command. This is
213 intended to be helpful for MUAs that show only the final error to their
214 users.
215
84024b72
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216PH/42 Another patch from the Sieve maintainer.
217
8005d38e
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218SC/02 Eximstats - Differentiate between permanent and temporary rejects.
219 Eximstats - Fixed some broken HTML links and added missing column headers
220 (Jez Hancock).
221 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
222 columns for Rejects, Temp Rejects, Ham, and Spam rows.
223
3298c6c6
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224SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
225
a43a27c5
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226PH/43 Yet another patch from the Sieve maintainer.
227
58eb016e 228PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
229 the response to the final '.' that terminates a message, but only in the
230 case where the client has not sent further data following the '.'
231 (unfortunately, this is allowed). However, in many cases there won't be
232 any further data because there won't be any more messages to send. A call
233 to select() can be used: if it shows that the input is "ready", there is
234 either input waiting, or the socket has been closed. An attempt to read
235 the next input character can distinguish the two cases. Previously, Exim
58eb016e 236 would have sent an OK response which the client would never have see.
563b63fa
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237 This could lead to message repetition. This fix should cure that, at
238 least in a lot of common cases.
58eb016e 239
b43a74ea
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240PH/45 Do not advertise STARTTLS in response to HELP unless it would be
241 advertised in response to EHLO.
242
b4ed4da0 243
5dd1517f
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244Exim version 4.66
245-----------------
246
247PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
248 fixed by 4.65/MH/01 (is this a record?) are fixed:
249
250 (i) An empty string was always treated as zero by the numeric comparison
251 operators. This behaviour has been restored.
252
253 (ii) It is documented that the numeric comparison operators always treat
254 their arguments as decimal numbers. This was broken in that numbers
255 starting with 0 were being interpreted as octal.
256
257 While fixing these problems I realized that there was another issue that
258 hadn't been noticed. Values of message_size_limit (both the global option
259 and the transport option) were treated as octal if they started with 0.
260 The documentation was vague. These values are now always treated as
261 decimal, and I will make that clear in the documentation.
262
263
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264Exim version 4.65
265-----------------
266
267TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
268 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
269 versions. (#438)
270
d6066548
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271MH/01 Don't check that the operands of numeric comparison operators are
272 integers when their expansion is in "skipping" mode (fixes bug
273 introduced by 4.64-PH/07).
274
4362ff0d
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275PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
276 child addresses, Exim now panics and dies. Previously, because the count
277 is held in a short int, deliveries were likely to be lost. As such a
278 large number of recipients for a single message is ridiculous
279 (performance will be very, very poor), I have chosen to impose a limit
280 rather than extend the field.
281
93cfa765 282
944e9e9c
TF
283Exim version 4.64
284-----------------
aa41d2de 285
21d74bd9
TK
286TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
287 leftover -K file (the existence of which was triggered by #402).
288 While we were at it, introduced process PID as part of the -K
289 filename. This should rule out race conditions when creating
290 these files.
291
292TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
293 processing considerably. Previous code took too long for large mails,
294 triggering a timeout which in turn triggers #401.
295
296TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
297 in the DK code in transports.c. sendfile() is not really portable,
298 hence the _LINUX specificness.
944e9e9c
TF
299
300TF/01 In the add_headers option to the mail command in an Exim filter,
301 there was a bug that Exim would claim a syntax error in any
302 header after the first one which had an odd number of characters
303 in the field name.
304
2b1c6e3a
PH
305PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
306 callout verification, Exim cached a "reject" for the entire domain. This
307 is correct for most verifications, but it is not correct for a recipient
308 verification with use_sender or use_postmaster set, because in that case
309 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
310 case of MAIL FROM:<> rejection from other early rejections (e.g.
311 rejection of HELO). When verifying a recipient using a non-null MAIL
312 address, the cache is ignored if it shows MAIL FROM:<> rejection.
313 Whatever the result of the callout, the value of the domain cache is
314 left unchanged (for any other kind of callout, getting as far as trying
315 RCPT means that the domain itself is ok).
316
1f872c80
PH
317PH/02 Tidied a number of unused variable and signed/unsigned warnings that
318 gcc 4.1.1 threw up.
319
320PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
321 manifest itself as EPIPE rather than ECONNECT. When tidying away a
322 session, the daemon ignores ECONNECT errors and logs others; it now
323 ignores EPIPE as well.
324
d203e649
PH
325PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
326 (quoted-printable decoding).
327
cc2ed8f7 328PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 329 later the small subsequent patch to fix an introduced bug.
f951fd57 330
ddfcd446
PH
331PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
332
d45b1de8
PH
333PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
334
335PH/08 An error is now given if message_size_limit is specified negative.
336
38a0a95f 337PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 338 to be given (somewhat) arbitrary names.
38a0a95f 339
a2405d83
JJ
340JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
341 in 4.64-PH/09.
342
343JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
344 miscellaneous code fixes
345
6ea85e9a
PH
346PH/10 Added the log_reject_target ACL modifier to specify where to log
347 rejections.
348
26da7e20
PH
349PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
350 hostname. This is wrong, because it relates to the incoming message (and
351 probably the interface on which it is arriving) and not to the outgoing
352 callout (which could be using a different interface). This has been
353 changed to use the value of the helo_data option from the smtp transport
354 instead - this is what is used when a message is actually being sent. If
355 there is no remote transport (possible with a router that sets up host
356 addresses), $smtp_active_hostname is used.
6ea85e9a 357
14aa5a05 358PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 359 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
360 (a) The code assumed that strncpy() returns a negative number on buffer
361 overflow, which isn't the case. Replaced with Exim's string_format()
362 function.
363 (b) There were several signed/unsigned issues. I just did the minimum
364 hacking in of casts. There is scope for a larger refactoring.
365 (c) The code used strcasecmp() which is not a standard C function.
366 Replaced with Exim's strcmpic() function.
367 (d) The code set only $1; it now sets $auth1 as well.
368 (e) A simple test gave the error "authentication client didn't specify
369 service in request". It would seem that Dovecot has changed its
370 interface. Fortunately there's a specification; I followed it and
371 changed what the client sends and it appears to be working now.
372
ff75a1f7
PH
373PH/13 Added $message_headers_raw to provide the headers without RFC 2047
374 decoding.
375
e6f6568e
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376PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
377 address A is aliased to B and C, where B exists and C does not. Without
378 -v the output is "A verified" because verification stops after a
379 successful redirection if more than one address is generated. However,
380 with -v the child addresses are also verified. Exim was outputting "A
381 failed to verify" and then showing the successful verification for C,
382 with its parentage. It now outputs "B failed to verify", showing B's
383 parentage before showing the successful verification of C.
384
d6f6e0dc
PH
385PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
386 look up a TXT record in a specific list after matching in a combined
387 list.
388
322050c2
PH
389PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
390 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
391 they consult the DNS. I had assumed they would set it the way they
392 wanted; and indeed my experiments on Linux seem to show that in some
393 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
394 To be on the safe side, however, I have now made the interface to
395 host_find_byname() similar to host_find_bydns(), with an argument
396 containing the DNS resolver options. The host_find_byname() function now
397 sets these options at its start, just as host_find_bydns() does. The smtp
398 transport options dns_qualify_single and dns_search_parents are passed to
399 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
400 of host_find_byname() use the default settings of RES_DEFNAMES
401 (qualify_single) but not RES_DNSRCH (search_parents).
402
08955dd3
PH
403PH/17 Applied (a modified version of) Nico Erfurth's patch to make
404 spool_read_header() do less string testing, by means of a preliminary
405 switch on the second character of optional "-foo" lines. (This is
406 overdue, caused by the large number of possibilities that now exist.
407 Originally there were few.) While I was there, I also converted the
408 str(n)cmp tests so they don't re-test the leading "-" and the first
409 character, in the hope this might squeeze out yet more improvement.
410
1eccaa59
PH
411PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
412 flag allowing group syntax was set by the header_syntax check but not
413 turned off, possible causing trouble later; (2) The flag was not being
414 set at all for the header_verify test, causing "group"-style headers to
415 be rejected. I have now set it in this case, and also caused header_
416 verify to ignore an empty address taken from a group. While doing this, I
417 came across some other cases where the code for allowing group syntax
418 while scanning a header line wasn't quite right (mostly, not resetting
419 the flag correctly in the right place). These bugs could have caused
420 trouble for malformed header lines. I hope it is now all correct.
421
602e59e5
PH
422PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
423 with the "reply" argument non-NULL. The code, however (which originally
424 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
425 but it didn't always do it. This confused somebody who was copying the
426 code for some other use. I have removed all the tests.
427
411ef850
PH
428PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
429 feature that was used to support insecure browsers during the U.S. crypto
430 embargo. It requires special client support, and Exim is probably the
431 only MTA that supported it -- and would never use it because real RSA is
432 always available. This code has been removed, because it had the bad
433 effect of slowing Exim down by computing (never used) parameters for the
434 RSA_EXPORT functionality.
435
7befa435
PH
436PH/21 On the advice of Timo Sirainen, added a check to the dovecot
437 authenticator to fail if there's a tab character in the incoming data
438 (there should never be unless someone is messing about, as it's supposed
439 to be base64-encoded). Also added, on Timo's advice, the "secured" option
440 if the connection is using TLS or if the remote IP is the same as the
441 local IP, and the "valid-client-cert option" if a client certificate has
442 been verified.
443
48da4259 444PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
445 authenticators. This can be used for authorization after authentication
446 succeeds. (In the case of plaintext, it servers for both authentication
447 and authorization.)
448
48da4259
PH
449PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
450 if any retry times were supplied.
451
d1d5595c
PH
452PH/24 Exim crashed if verify=helo was activated during an incoming -bs
453 connection, where there is no client IP address to check. In this
454 situation, the verify now always succeeds.
455
0ef732d9
PH
456PH/25 Applied John Jetmore's -Mset patch.
457
328895cc
PH
458PH/26 Added -bem to be like -Mset, but loading a message from a file.
459
fd700877
PH
460PH/27 In a string expansion for a processed (not raw) header when multiple
461 headers of the same name were present, leading whitespace was being
462 removed from all of them, but trailing whitespace was being removed only
463 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
464 before concatenation. Completely empty headers in a concatenation (as
465 before) are ignored.
fd700877 466
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PH
467PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
468 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
469
17af4a17
PH
470PH/29 [Removed. This was a change that I later backed out, and forgot to
471 correct the ChangeLog entry (that I had efficiently created) before
472 committing the later change.]
f6c332bd
PH
473
474PH/30 Exim was sometimes attempting to deliver messages that had suffered
475 address errors (4xx response to RCPT) over the same connection as other
476 messages routed to the same hosts. Such deliveries are always "forced",
477 so retry times are not inspected. This resulted in far too many retries
478 for the affected addresses. The effect occurred only when there were more
479 hosts than the hosts_max_try setting in the smtp transport when it had
480 the 4xx errors. Those hosts that it had tried were not added to the list
481 of hosts for which the message was waiting, so if all were tried, there
482 was no problem. Two fixes have been applied:
483
484 (i) If there are any address or message errors in an SMTP delivery, none
485 of the hosts (tried or untried) are now added to the list of hosts
486 for which the message is waiting, so the message should not be a
487 candidate for sending over the same connection that was used for a
488 successful delivery of some other message. This seems entirely
489 reasonable: after all the message is NOT "waiting for some host".
490 This is so "obvious" that I'm not sure why it wasn't done
491 previously. Hope I haven't missed anything, but it can't do any
492 harm, as the worst effect is to miss an optimization.
493
494 (ii) If, despite (i), such a delivery is accidentally attempted, the
495 routing retry time is respected, so at least it doesn't keep
496 hammering the server.
497
c1114884
PH
498PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
499 in ${readsocket because some servers need this prod.
500
7a0743eb
PH
501PH/32 Added some extra debug output when updating a wait-xxx database.
502
0d85fa3f
PH
503PH/33 The hint "could be header name not terminated by colon", which has been
504 given for certain expansion errors for a long time, was not being given
505 for the ${if def:h_colon_omitted{... case.
506
1bf43b78
PH
507PH/34 The spec says: "With one important exception, whenever a domain list is
508 being scanned, $domain contains the subject domain." There was at least
509 one case where this was not true.
510
520de300
PH
511PH/35 The error "getsockname() failed: connection reset by peer" was being
512 written to the panic log as well as the main log, but it isn't really
513 panic-worthy as it just means the connection died rather early on. I have
514 removed the panic log writing for the ECONNRESET error when getsockname()
515 fails.
516
48c7f9e2
PH
517PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
518 runs only) independently of the message's sender address. This meant
519 that, if the 4xx error was in fact related to the sender, a different
520 message to the same recipient with a different sender could confuse
521 things. In particualar, this can happen when sending to a greylisting
522 server, but other circumstances could also provoke similar problems.
523 I have changed the default so that the retry time for these errors is now
524 based a combination of the sender and recipient addresses. This change
525 can be overridden by setting address_retry_include_sender=false in the
526 smtp transport.
527
99ea1c86
PH
528PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
529 remote server are returned as part of bounce messages. This was not
530 happening for LMTP over a pipe (the lmtp transport), but now it is the
531 same for both kinds of LMTP.
532
a2042e78
PH
533PH/38 Despite being documented as not happening, Exim was rewriting addresses
534 in header lines that were in fact CNAMEs. This is no longer the case.
535
4fbcfc2e
PH
536PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
537 and queue runs started by the daemon processed all messages. This has
538 been fixed so that -R and -S can now usefully be given with -q<time>.
539
aa41d2de
PH
540PH/40 Import PCRE release 6.7 (fixes some bugs).
541
af561417
PH
542PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
543
3cc66b45
PH
544PH/42 Give an error if -q is specified more than once.
545
194cc0e4
PH
546PH/43 Renamed the variables $interface_address and $interface_port as
547 $received_ip_address and $received_port, to make it clear that these
548 values apply to message reception, and not to the outgoing interface when
549 a message is delivered. (The old names remain recognized, of course.)
550
a401ddaa
PH
551PH/44 There was no timeout on the connect() call when using a Unix domain
552 socket in the ${readsocket expansion. There now is.
553
4e88a19f
PH
554PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
555 be meaningful with "accept".
556
d7d7b289
SC
557SC/01 Eximstats V1.43
558 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
559
560SC/02 Eximstats V1.44
561 Use a glob alias rather than an array ref in the generated
562 parser. This improves both readability and performance.
563
564SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
565 Collect SpamAssassin and rejection statistics.
566 Don't display local sender or destination tables unless
567 there is data to show.
568 Added average volumes into the top table text output.
569
570SC/04 Eximstats V1.46
571 Collect data on the number of addresses (recipients)
572 as well as the number of messages.
573
574SC/05 Eximstats V1.47
575 Added 'Message too big' to the list of mail rejection
576 reasons (thanks to Marco Gaiarin).
577
578SC/06 Eximstats V1.48
579 Mainlog lines which have GMT offsets and are too short to
580 have a flag are now skipped.
581
582SC/07 Eximstats V1.49 (Alain Williams)
583 Added the -emptyok flag.
584
585SC/08 Eximstats V1.50
586 Fixes for obtaining the IP address from reject messages.
587
0ea2a468
JJ
588JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
589 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
590 whitesspace changes from 4.64-PH/27
591
592JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
593 match 4.64-PH/13
594
595JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
596 are found, allow negative numbers in numeric criteria)
597
598JJ/06 exipick.20061117.2, added new $message_body_missing variable
599
600JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
601 to match changes made in 4.64-PH/43
602
8a10f5a4
PH
603PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
604
30e18802
PH
605PH/47 Put in an explicit test for a DNS lookup of an address record where the
606 "domain" is actually an IP address, and force a failure. This locks out
607 those revolvers/nameservers that support "A-for-A" lookups, in
608 contravention of the specifications.
609
55728a4f
PH
610PH/48 When a host name was looked up from an IP address, and the subsequent
611 forward lookup of the name timed out, the host name was left in
612 $sender_host_name, contrary to the specification.
d7d7b289 613
d7837193
PH
614PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
615 restricted to single-key lookups, Exim was not diagnosing an error if
616 * or *@ was used with a query-style lookup.
617
87054a31
PH
618PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
619
ea2c01d2
MH
620MH/01 local_scan ABI version incremented to 1.1. It should have been updated
621 long ago, but noone interested enough thought of it. Let's just say that
622 the "1.1" means that there are some new functions that weren't there at
623 some point in the past.
624
e4fa6968
PH
625PH/51 Error processing for expansion failure of helo_data from an smtp
626 transport during callout processing was broken.
627
56f5d9bd
PH
628PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
629 tested/used via the -bh/-bhc/-bs options.
630
922e1c28
PH
631PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
632 bug, fixed in subsequent PCRE releases).
633
21eb6e72
PH
634PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
635 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
636
a0540757
PH
637PH/55 Check for a ridiculously long file name in exim_dbmbuild.
638
944e9e9c 639
478be7b0
SC
640Exim version 4.63
641-----------------
642
643SC/01 Use a glob alias rather than an array ref in eximstats generated
644 parser. This improves both readability and performance.
645
646SC/02 Collect SpamAssassin and rejection statistics in eximstats.
647 Don't display local sender or destination tables in eximstats unless
648 there is data to show.
649 Added average volumes into the eximstats top table text output.
650
651SC/03 Collect data on the number of addresses (recipients) as well
652 as the number of messages in eximstats.
653
2b965a65
TF
654TF/01 Correct an error in the documentation for the redirect router. Exim
655 does (usually) call initgroups() when daemonizing.
478be7b0 656
45b91596
PH
657TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
658 with consistent privilege compared to when running as a daemon.
478be7b0 659
c59f5781
TF
660TF/03 Note in the spec that $authenticated_id is not set for local
661 submissions from trusted users.
662
90fc3069
TF
663TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
664 Thanks to Dean Brooks <dean@iglou.com> for the patch.
665
6083aca0
TF
666TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
667 by adding some example configuration directives to the default
668 configuration file. A little bit of work is required to uncomment the
669 directives and define how usernames and passwords are checked, but
670 there is now a framework to start from.
671
765b530f
PH
672PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
673 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
674 without this. I don't know how relevant this is to other LDAP libraries.
675
4e167a8c
PH
676PH/02 Add the verb name to the "unknown ACL verb" error.
677
4608d683
PH
678PH/03 Magnus Holmgren's patch for filter_prepend_home.
679
b8dc3e4a
PH
680PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
681
5418e93b
PH
682PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
683 directory not expanded when it should be if an expanded home directory
684 was set for the address (which is overridden by the transport).
685
b4a9bda2
PH
686PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
687 libradius.
688
45b91596
PH
689PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
690 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
691 because it is too late at that time, and has no effect.
692
5547e2c5
PH
693PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
694 security issue with \' (bugzilla #107). I could not use the
695 PQescapeStringConn() function, because it needs a PGconn value as one of
696 its arguments.
697
dbcef0ea
PH
698PH/08 When testing addresses using -bt, indicate those final addresses that
699 are duplicates that would not cause an additional delivery. At least one
700 person was confused, thinking that -bt output corresponded to deliveries.
701 (Suppressing duplicates isn't a good idea as you lose the information
702 about possibly different redirections that led to the duplicates.)
703
25257489
PH
704PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
705 systems where poll() doesn't work, in particular OS X.
706
c816d124
PH
707PH/10 Added more information to debugging output for retry time not reached.
708
a9ccd69a
PH
709PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
710 operations in malware.c.
711
75fa1910
PH
712PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
713 signatures.
714
a7d7aa58
PH
715PH/13 If write_rejectlog was set false when logging was sent to syslog with
716 syslog_duplication set false, log lines that would normally be written
717 both the the main log and to the reject log were not written to syslog at
718 all.
719
42119b09
PH
720PH/14 In the default configuration, change the use of "message" in ACL warn
721 statements to "add_header".
722
41609df5
PH
723PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
724 not followed by a command (e.g. "seen endif").
725
a5bd321b
PH
726PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
727 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
728 latter.
729
e85a7ad5 730PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
731 so that it is now:
732
e85a7ad5
PH
733 ${if or { \
734 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
735 { match{$h_precedence:}{(?i)bulk|list|junk} } \
736 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
737 }{no}{yes}}
738
e85a7ad5
PH
739 The Auto-Submitted: and various List- headers are standardised, whereas I
740 don't think Precedence: ever was.
5dff5817 741
d8fe1c03
PH
742PH/18 Refactored debugging code in route_finduser() to show more information,
743 in particular, the error code if getpwnam() issues one.
744
16282d2b
PH
745PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
746 This is apparently needed in addition to the PH/07 change above to avoid
747 any possible encoding problems.
748
35d40a98
PH
749PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
750 but not after initializing Perl.
751
034d99ab
PH
752PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
753 output them only if debugging. By default they are written stderr,
754 apparently, which is not desirable.
755
6ec97b1b
PH
756PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
757 queries.
758
e22ca4ac
JJ
759JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
760 --not options
761
762JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
763
33d73e3b
PH
764PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
765 authenticated or an ident call has been made. Suppress the default
766 values for $authenticated_id and $authenticated_sender (but permit -oMai
767 and -oMas) when testing with -bh.
768
9ecb03f3
PH
769PH/24 Re-jigged the order of the tests in the default configuration so that the
770 tests for valid domains and recipients precede the DNS black list and CSA
771 tests, on the grounds that those ones are more expensive.
772
084efe8d
PH
773PH/25 Exim was not testing for a space following SMTP commands such as EHLO
774 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
775 This bug exists in every version of Exim that I still have, right back to
776 0.12.
777
366fc9f0
PH
778PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
779 However, an attempt to turn on case-sensitivity in a regex key by
780 including (?-i) didn't work because the subject string was already
781 lowercased, and the effects were non-intuitive. It turns out that a
782 one-line patch can be used to allow (?-i) to work as expected.
783
c59f5781 784
c887c79e
TF
785Exim version 4.62
786-----------------
787
788TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
789 other effects) broke the use of negated acl sub-conditions.
790
1cce3af8
PH
791PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
792 patch).
793
afb3eaaf
PH
794PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
795 "Deny" causes Exim to reject the incoming connection with a 554 error.
796 Unfortunately, if there is a major crisis, such as a disk failure,
797 tcp-wrappers gives "deny", whereas what one would like would be some
798 kind of temporary error. A kludge has been added to help with this.
799 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
800 554 error is used if errno is still zero or contains ENOENT (which occurs
801 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
802 451 error is used.
803
e173618b
PH
804PH/03 Add -lutil to the default FreeBSD LIBS setting.
805
dd16e114
PH
806PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
807 errors. Otherwise a message that provokes a temporary error (when other
808 messages do not) can cause a whole host to time out.
809
f7fd3850
PH
810PH/05 Batch deliveries by appendfile and pipe transports did not work when the
811 addresses were routed directly to files or pipes from a redirect router.
812 File deliveries just didn't batch; pipe deliveries might have suffered
813 odd errors.
814
d87df92c
PH
815PH/06 A failure to get a lock for a hints database would erroneously always say
816 "Failed to get write lock", even when it was really a read lock.
817
7e9f683d
PH
818PH/07 The appendfile transport was creating MBX lock files with a fixed mode
819 of 0600. This has been changed to use the value of the lockfile_mode
820 option (which defaults to 0600).
821
bfad5236
PH
822PH/08 Applied small patch from the Sieve maintainer.
823
01c490df
PH
824PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
825 folder from quota calculations, a direct delivery into this folder messed
826 up the contents of the maildirsize file. This was because the regex was
827 used only to exclude .Trash (or whatever) when the size of the mailbox
828 was calculated. There was no check that a delivery was happening into an
829 excluded directory. This bug has been fixed by ignoring all quota
830 processing for deliveries into excluded directories.
831
d6629cdc
PH
832PH/10 Added the maildirfolder_create_regex option to appendfile.
833
1cce3af8 834
214e2000
PH
835Exim version 4.61
836-----------------
837
838PH/01 The code for finding all the local interface addresses on a FreeBSD
839 system running IPv6 was broken. This may well have applied to all BSD
840 systems, as well as to others that have similar system calls. The broken
841 code found IPv4 interfaces correctly, but gave incorrect values for the
842 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
843 that it would not match correctly against @[] and not recognize the IPv6
844 addresses as local.
845
f9daeae0
PH
846PH/02 The ipliteral router was not recognizing addresses of the form user@
847 [ipv6:....] because it didn't know about the "ipv6:" prefix.
848
7e66e54d
PH
849PH/03 Added disable_ipv6.
850
c8ea1597
PH
851PH/04 Changed $reply_address to use the raw form of the headers instead of the
852 decoded form, because it is most often used to construct To: headers
853 lines in autoreplies, and the decoded form may well be syntactically
854 invalid. However, $reply_address has leading white space removed, and all
855 newlines turned into spaces so that the autoreply transport does not
856 grumble.
857
911f6fde
PH
858PH/05 If group was specified without a user on a router, and no group or user
859 was specified on a transport, the group from the router was ignored.
860
47ca6d6c
PH
861PH/06 Increased the number of ACL variables to 20 of each type, and arranged
862 for visible compile-time settings that can be used to change these
863 numbers, for those that want even more. Backwards compatibility with old
864 spool files has been maintained. However, going back to a previous Exim
865 release will lost any variables that are in spool files.
866
ed0e9820
PH
867PH/07 Two small changes when running in the test harness: increase delay when
868 passing a TCP/IP connection to a new process, in case the original
869 process has to generate a bounce, and remove special handling of
870 127.0.0.2 (sic), which is no longer necessary.
871
eff37e47
PH
872PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
873 be the same on different OS.
874
1921d2ea
PH
875PH/09 Moved a debug statement in filter processing to avoid a race problem when
876 testing.
877
b3f69ca8
JJ
878JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
879 whether --show-vars was specified or not
880
881JJ/02 exipick: Added support for new ACL variable spool format introduced
882 in 4.61-PH/06
883
424a1c63
PH
884PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
885 syntactically invalid From: or Reply-to: line, and a filter used this to
886 generate an autoreply, and therefore failed to obtain an address for the
887 autoreply, Exim could try to deliver to a non-existent relative file
888 name, causing unrelated and misleading errors. What now happens is that
889 it logs this as a hard delivery error, but does not attempt to create a
890 bounce message.
891
7a100415
PH
892PH/11 The exinext utility has a -C option for testing purposes, but although
893 the given file was scanned by exinext itself; it wasn't being passed on
894 when Exim was called.
895
19b9dc85
PH
896PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
897 an end-of-file indication when reading a command response.
898
309bd837
PH
899PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
900 compiled. In many other places in Exim, IPv6 addresses are always
901 recognized, so I have changed this. It also means that IPv4 domain
902 literals of the form [IPV4:n.n.n.n] are now always recognized.
903
59e82a2a
PH
904PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
905 used if the router is not running as root, for example, when verifying at
906 ACL time, or when using -bh. The debugging output from this situation was
907 non-existent - all you got was a failure to exec. I have made two
908 changes:
909
910 (a) Failures to set uid/gid, the current directory, or a process leader
911 in a subprocess such as that created by queryprogram now generate
912 suitable debugging ouput when -d is set.
913
914 (b) The queryprogram router detects when it is not running as root,
915 outputs suitable debugging information if -d is set, and then runs
916 the subprocess without attempting to change uid/gid.
917
9edc04ce
PH
918PH/15 Minor change to Makefile for building test_host (undocumented testing
919 feature).
920
1349e1e5
PH
921PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
922 additional section of a DNS packet that returns MX or SRV records.
923 Instead, it always explicitly searches for A/AAAA records. This avoids
924 major problems that occur when a DNS server includes only records of one
925 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
926 fixed another bug: if SRV records were looked up and the corresponding
927 address records were *not* found in the additional section, the port
928 values from the SRV records were lost.
929
ea49d0e1
PH
930PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
931 using the correct key (the original address) when searching the retry
932 rules in order to find which one to use for generating the retry hint.
933
064a94c9
PH
934PH/18 If quota_warn_message contains a From: header, Exim now refrains from
935 adding the default one. Similarly, if it contains a Reply-To: header, the
936 errors_reply_to option, if set, is not used.
937
727071f8
PH
938PH/19 When calculating a retry time, Exim used to measure the "time since
939 failure" by looking at the "first failed" field in the retry record. Now
940 it does not use this if it is later than than the arrival time of the
941 message. Instead it uses the arrival time. This makes for better
942 behaviour in cases where some deliveries succeed, thus re-setting the
943 "first failed" field. An example is a quota failure for a huge message
944 when small messages continue to be delivered. Without this change, the
945 "time since failure" will always be short, possible causing more frequent
946 delivery attempts for the huge message than are intended.
dd16e114 947 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 948
f78eb7c6
PH
949PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
950 $1, $2, $3) because the numerical variables can be reset during some
951 expansion items (e.g. "match"), thereby losing the authentication data.
952
21c28500
PH
953PH/21 Make -bV show the size of off_t variables so that the test suite can
954 decide whether to run tests for quotas > 2G.
955
956PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
957 mailbox_size, and mailbox_filecount in the appendfile transport. If a
958 filecount value is greater than 2G or if a quota value is greater than 2G
959 on a system where the size of off_t is not greater than 4, a panic error
960 is given.
961
1688f43b
PH
962PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
963 never match. The debug and -bh output now contains an explicit error
964 message indicating a malformed IPv4 address or mask.
965
966PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
967 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
968 PH/23 above applies.
969
9675b384
PH
970PH/25 Do not write to syslog when running in the test harness. The only
971 occasion when this arises is a failure to open the main or panic logs
972 (for which there is an explicit test).
973
6a3f1455
PH
974PH/26 Added the /no_tell option to "control=freeze".
975
dac79d3e
PH
976PH/27 If a host name lookup failed very early in a connection, for example, if
977 the IP address matched host_lookup and the reverse lookup yielded a name
978 that did not have a forward lookup, an error message of the form "no IP
979 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
980 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 981
5977a0b3
PH
982PH/28 An enabling patch from MH: add new function child_open_exim2() which
983 allows the sender and the authenticated sender to be set when
984 submitting a message from within Exim. Since child_open_exim() is
985 documented for local_scan(), the new function should be too.
986
c91535f3
PH
987PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
988 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
989 results in an empty string is now treated as unset.
990
0d46a8c8
PH
991PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
992
278c6e6c
PH
993PH/31 Added sender_verify_fail logging option.
994
2cbb4081
PH
995PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
996 needed by RFC 822 but not by RFC 2822 was commented out. I have now
997 tidied the source and removed it altogether.
998
3eef829e
PH
999PH/33 When a queue run was abandoned because the load average was too high, a
1000 log line was always written; now it is written only if the queue_run log
1001 selector is set. In addition, the log line for abandonment now contains
1002 information about the queue run such as the pid. This is always present
1003 in "start" and "stop" lines but was omitted from the "abandon" line.
1004
1ab95fa6
PH
1005PH/34 Omit spaces between a header name and the colon in the error message that
1006 is given when verify = headers_syntax fails (if there are lots of them,
1007 the message gets confusing).
1008
230205fc
PH
1009PH/35 Change the default for dns_check_names_pattern to allow slashes within
1010 names, as there are now some PTR records that contain slashes. This check
1011 is only to protect against broken name servers that fall over on strange
1012 characters, so the fact that it applies to all lookups doesn't matter.
1013
75e0e026
PH
1014PH/36 Now that the new test suite is complete, we can remove some of the
1015 special code in Exim that was needed for the old test suite. For example,
1016 sorting DNS records because real resolvers return them in an arbitrary
1017 order. The new test suite's fake resolver always returns records in the
1018 same order.
1019
1020PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1021 bounces) except when queue_only is set, to avoid logging races between
1022 the different processes.
1023
145396a6
PH
1024PH/38 Panic-die if .include specifies a non-absolute path.
1025
3cd34f13
PH
1026PH/39 A tweak to the "H" retry rule from its user.
1027
11121d3d
JJ
1028JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1029 a label. They prevented compilation on older perls.
1030
1031JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1032 a warning to be raised on newish perls.
1033
1034JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1035 on queue. Changes to match documented behaviour of showing count of
1036 messages matching specified criteria.
1037
8def5aaf
PH
1038PH/40 Changed the default ident timeout from 30s to 5s.
1039
929ba01c
PH
1040PH/41 Added support for the use of login_cap features, on those BSD systems
1041 that have them, for controlling the resources used by pipe deliveries.
1042
2632889e
PH
1043PH/42 The content-scanning code uses fopen() to create files in which to put
1044 message data. Previously it was not paying any attention to the mode of
1045 the files. Exim runs with umask(0) because the rest of the code creates
1046 files with open(), and sets the required mode explicitly. Thus, these
1047 files were ending up world-writeable. This was not a big issue, because,
1048 being within the spool directory, they were not world-accessible. I have
1049 created a function called modefopen, which takes an additional mode
1050 argument. It sets umask(777), creates the file, chmods it to the required
1051 mode, then resets the umask. All the relevant calls to fopen() in the
1052 content scanning code have been changed to use this function.
1053
944a9c55
PH
1054PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1055 to 24 hours. This avoids potential overflow problems when processing G
1056 and H retry rules. I suspect nobody ever tinkers with this value.
1057
4a23603b
PH
1058PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1059
4730f942
PH
1060PH/45 When the plaintext authenticator is running as a client, the server's
1061 challenges are checked to ensure they are valid base64 strings. By
1062 default, the authentication attempt is cancelled if an invalid string is
1063 received. Setting client_ignore_invalid_base64 true ignores these errors.
1064 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1065 they are received. Thus, the responses can be made to depend on the
1066 challenges. If an invalid string is ignored, an empty string is placed in
1067 the variable.
1068
30dba1e6
PH
1069PH/46 Messages that are created by the autoreply transport now contains a
1070 References: header, in accordance with RFCs 2822 and 3834.
1071
382afc6b
PH
1072PH/47 Added authenticated_sender_force to the smtp transport.
1073
a86229cf
PH
1074PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1075
50c99ba6
PH
1076PH/49 Installed latest patch from the Sieve maintainer.
1077
d35e429d
PH
1078PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1079 was also set, the appendfile transport was unnecessarily scanning a
1080 directory of message files (e.g. for maildir delivery) to find the count
1081 of files (along with the size), even though it did not need this
1082 information. It now does the scan only if it needs to find either the
1083 size of the count of files.
1084
f90d018c
PH
1085PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1086
75def545
PH
1087PH/52 Two bugs concerned with error handling when the smtp transport is
1088 used in LMTP mode:
1089
1090 (i) Exim was not creating retry information for temporary errors given
1091 for individual recipients after the DATA command when the smtp transport
1092 was used in LMTP mode. This meant that they could be retried too
1093 frequently, and not timed out correctly.
1094
1095 (ii) Exim was setting the flag that allows error details to be returned
1096 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1097 recipients that were returned after the DATA command.
1098
1099PH/53 This is related to PH/52, but is more general: for any failing address,
1100 when detailed error information was permitted to be returned to the
1101 sender, but the error was temporary, then after the final timeout, only
1102 "retry timeout exceeded" was returned. Now it returns the full error as
1103 well as "retry timeout exceeded".
1104
c46782ef
PH
1105PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1106 do this, and (what is worse) MTAs that accept it.
1107
71fafd95
PH
1108PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1109 will now be deprecated.
1110
2c5db4fd
PH
1111PH/56 New os.c-cygwin from the Cygwin maintainer.
1112
9cf6b11a
JJ
1113JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1114 formats (previously only available in exim formats via -bpr, -bpru,
1115 and -bpra. Now also available in native and exiqgrep formats)
1116
1117JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1118 with very large, slow to parse queues
1119
1120JJ/08 exipick: added ! as generic prefix to negate any criteria format
1121
1122JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1123
898d150f
PH
1124PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1125 responses to authentication challenges, though it was showing the
1126 challenges; (ii) I've removed the CR characters from the debug output for
1127 SMTP output lines.
1128
46218253
PH
1129PH/58 Allow for the insertion of a newline as well as a space when a string
1130 is turned into more than one encoded-word during RFC 2047 encoding. The
1131 Sieve code now uses this.
1132
e97957bc
PH
1133PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1134 data_4xx, lost_connection, tls_required.
1135
81e509d7
PH
1136PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1137 message was being sent as an SMTP response.
1138
3d240ff7
PH
1139PH/61 Add -l and -k options to exicyclog.
1140
b37c4101
PH
1141PH/62 When verifying, if an address was redirected to one new address, so that
1142 verification continued, and the new address failed or deferred after
1143 having set something in $address_data, the value of $address_data was not
1144 passed back to the ACL. This was different to the case when no
1145 redirection occurred. The value is now passed back in both cases.
1146
79378e0f
PH
1147PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1148 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1149 use login_cap.h, so on its own it isn't the distinguishing feature. The
1150 new name refers directly to the setclassresources() function.
1151
e49c7bb4
PH
1152PH/65 Added configuration files for NetBSD3.
1153
d114ec46
PH
1154PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1155
f3d7df6c
PH
1156PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1157 is preferred over IPv4.
1158
715ab376
PH
1159PH/68 The bounce_return_message and bounce_return_body options were not being
1160 honoured for bounces generated during the reception of non-SMTP messages.
1161 In particular, this applied to messages rejected by the ACL. This bug has
1162 been fixed. However, if bounce_return_message is true and bounce_return_
1163 body is false, the headers that are returned for a non-SMTP message
1164 include only those that have been read before the error was detected.
1165 (In the case of an ACL rejection, they have all been read.)
1166
6b31b150
PH
1167PH/69 The HTML version of the specification is now built in a directory called
1168 spec_html instead of spec.html, because the latter looks like a path with
1169 a MIME-type, and this confuses some software.
1170
1171PH/70 Catch two compiler warnings in sieve.c.
1172
d515a917
PH
1173PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1174 function verify_get_ident() calls ip_connect() to connect a socket, but
1175 if the "connect()" function timed out, ip_connect() used to close the
1176 socket. However, verify_get_ident() also closes the socket later, and in
1177 between Exim writes to the log, which may get opened at this point. When
1178 the socket was closed in ip_connect(), the log could get the same file
1179 descriptor number as the socket. This naturally causes chaos. The fix is
1180 not to close the socket in ip_connect(); the socket should be closed by
1181 the function that creates it. There was only one place in the code where
1182 this was missing, in the iplookup router, which I don't think anybody now
1183 uses, but I've fixed it anyway.
1184
9b8fadde
PH
1185PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1186 well as to direct DNS lookups. Otherwise the handling of names in host
1187 lists is inconsistent and therefore confusing.
1188
214e2000 1189
5de37277
PH
1190Exim version 4.60
1191-----------------
1192
cc38ddbf
PH
1193PH/01 Two changes to the default runtime configuration:
1194
1195 (1) Move the checks for relay_from_hosts and authenticated clients from
1196 after to before the (commented out) DNS black list checks.
1197
1198 (2) Add control=submission to the relay_from_hosts and authenticated
1199 clients checks, on the grounds that messages accepted by these
1200 statements are most likely to be submissions.
5de37277 1201
72fdd6ae
PH
1202PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1203
1204 (1) Generate an error if the third argument for the ${prvs expansion is
1205 not a single digit.
1206
1207 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1208 string.
1209
1210 (3) Reset the variables that are obtained from the first argument of
1211 ${prvscheck and used in the second argument before leaving the code,
1212 because their memory is reclaimed, so using them afterwards may do
1213 silly things.
1214
1215 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1216 one (it's much easier than Tom thought :-).
1217
1218 (5) Because of (4), we can now allow for the use of $prvscheck_result
1219 inside the third argument.
cb9328de 1220
cb741023
PH
1221PH/03 For some reason, the default setting of PATH when running a command from
1222 a pipe transport was just "/usr/bin". I have changed it to
1223 "/bin:/usr/bin".
1224
f174f16e
PH
1225PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1226 anything to be listed in the output from -bV.
b2f5a032 1227
c25242d7
PH
1228PH/05 When a filter generated an autoreply, the entire To: header line was
1229 quoted in the delivery log line, like this:
1230
1231 => >A.N.Other <ano@some.domain> <original@ddress> ...
1232
1233 This has been changed so that it extracts the operative address. There
1234 may be more than one such address. If so, they are comma-separated, like
1235 this:
1236
1237 => >ano@some.domain,ona@other.domain <original@ddress> ...
1238
82c19f95
PH
1239PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1240 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1241 not being looked up in the rDNS to get a host name, Exim was showing the
1242 IP address twice in Received: lines, even though the IP addresses were
1243 identical. For example:
1244
1245 Received: from [1.2.3.4] (helo=[1.2.3.4])
1246
1247 However, if the real host name was known, it was omitting the HELO data
1248 if it matched the actual IP address. This has been tidied up so that it
1249 doesn't show the same IP address twice.
1250
d7ffbc12
PH
1251PH/07 When both +timestamp and +memory debugging was on, the value given by
1252 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1253 called by the debug printing, thereby overwriting the timestamp buffer.
1254 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1255
9f526266
PH
1256PH/08 When the original message was included in an autoreply transport, it
1257 always said "this is a copy of the message, including all the headers",
1258 even if body_only or headers_only was set. It now gives an appropriate
1259 message.
1260
87fcc8b9
PH
1261PH/09 Applied a patch from the Sieve maintainer which:
1262
1263 o fixes some comments
1264 o adds the (disabled) notify extension core
1265 o adds some debug output for the result of if/elsif tests
1266 o points to the current vacation draft in the documentation
1267 and documents the missing references header update
1268
1269 and most important:
1270
1271 o fixes a bug in processing the envelope test (when testing
1272 multiple envelope elements, the last element determinted the
1273 result)
1274
456682f5
PH
1275PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1276 Electronic Mail") by including:
1277
1278 Auto-submitted: auto-generated
1279
1280 in the messages that it generates (bounce messages and others, such as
1281 warnings). In the case of bounce messages for non-SMTP mesages, there was
1282 also a typo: it was using "Auto_submitted" (underscore instead of
1283 hyphen). Since every message generated by Exim is necessarily in response
1284 to another message, thes have all been changed to:
1285
1286 Auto-Submitted: auto-replied
1287
1288 in accordance with these statements in the RFC:
1289
1290 The auto-replied keyword:
1291
1292 - SHOULD be used on messages sent in direct response to another
1293 message by an automatic process,
1294
1295 - MUST NOT be used on manually-generated messages,
1296
1297 - MAY be used on Delivery Status Notifications (DSNs) and Message
1298 Disposition Notifications (MDNs),
1299
1300 - MUST NOT be used on messages generated by automatic or periodic
1301 processes, except for messages which are automatic responses to
1302 other messages.
1303
3e46c1aa
PH
1304PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1305 to the default Received: header definition.
456682f5 1306
49826d12
PH
1307PH/12 Added log selector acl_warn_skipped (default on).
1308
eba0c039
PH
1309PH/13 After a successful wildlsearch lookup, discard the values of numeric
1310 variables because (a) they are in the wrong storage pool and (b) even if
1311 they were copied, it wouldn't work properly because of the caching.
1312
a0d6ba8a
PH
1313PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1314 checking when decoding. Apparently there are clients that generate
1315 overlong encoded strings. Why am I not surprised?
1316
f0917727
PH
1317PH/15 If the first argument of "${if match_address" was not empty, but did not
1318 contain an "@" character, Exim crashed. Now it writes a panic log message
1319 and treats the condition as false.
1320
096fee00
PH
1321PH/16 In autoreply, treat an empty string for "once" the same as unset.
1322
024bd3c2
PH
1323PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1324 extension "envelope-auth". The code is finished and in agreement with
1325 other implementations, but there is no documentation so far and in fact,
1326 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1327 not changing the active code.
1328
1329 Print executed "if" and "elsif" statements when debugging is used. This
1330 helps a great deal to understand what a filter does.
1331
1332 Document more things not specified clearly in RFC3028. I had all this
1333 sorted out, when out of a sudden new issues came to my mind. Oops."
1334
df199fec
PH
1335PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1336 (Bugzilla #53).
1337
d27f1df3
PH
1338PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1339 canonical form (as documented). However, after a host name lookup from
1340 the IP address, check_host() was doing a simple string comparison with
1341 addresses acquired from the DNS when checking that the found name did
1342 have the original IP as one of its addresses. Since any found IPv6
1343 addresses are likely to be in abbreviated form, the comparison could
1344 fail. Luckily, there already exists a function for doing the comparison
1345 by converting both addresses to binary, so now that is used instead of
1346 the text comparison.
1347
96776534
PH
1348PH/20 There was another similar case to PH/19, when a complete host name was
1349 given in a host list; looking up its IP address could give an abbreviated
1350 form, whereas the current host's name might or might not be abbreviated.
1351 The same fix has been applied.
1352
5de37277 1353
9a799bc0
PH
1354Exim version 4.54
1355-----------------
1356
1357PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1358 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1359 It now does.
1360
99a4b039
PH
1361PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1362 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1363
1364PH/03 Typo: missing ".o" in src/pcre/Makefile.
1365
4b233853
PH
1366PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1367 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1368 Also, for "Auto-Submitted", treat anything other than "no" as
1369 non-personal, in accordance with RFC 3834. (Previously it treated
1370 anything starting "auto-" as non-personal.)
1371
8857ccfd
PH
1372TF/01 The control=submission/name=... option had a problem with syntax
1373 errors if the name included a slash character. The /name= option
1374 now slurps the rest of the string, so it can include any characters
1375 but it must come last in the list of options (after /sender_retain
1376 or /domain=).
1377
433a2980
PH
1378PH/05 Some modifications to the interface to the fake nameserver for the new
1379 testing suite.
1380
3e46c1aa 1381
9a799bc0 1382
e3a311ba
TK
1383Exim version 4.53
1384-----------------
1385
1386TK/01 Added the "success_on_redirect" address verification option. See
1387 NewStuff for rationale and an example.
1388
13b685f9
PH
1389PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1390
395ff96d
PH
1391PH/02 Patch to exigrep to allow it to work on syslog lines.
1392
5b68f6e4
PH
1393PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1394 fread() to skip over the body file's header line, because in Cygwin the
1395 header line is locked and is inaccessible.
1396
1ab52c69
PH
1397PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1398 co-exist for some time) to make it clear that it is the Exim ID that is
1399 referenced, not the Message-ID: header line.
1400
b07e6aa3
PH
1401PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1402 string_format() function, because snprintf() does not exist on all
1403 operating systems.
1404
254e032f
PH
1405PH/06 The use of forbid_filter_existstest now also locks out the use of the
1406 ${stat: expansion item.
1407
3af76a81
PH
1408PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1409 protocol synchronization error", to keep the pedants happy.
1410
2548ba04
PH
1411PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1412 well as for IRIX systems, when gcc is being used. See the host.c source
1413 file for comments.
1414
b6c6011d
PH
1415PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1416
cf39cf57
PH
1417PH/10 Named domain lists were not working if used in a queue_smtp_domains
1418 setting.
1419
f1513293
PH
1420PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1421 transport and to the smtp transport in LMTP mode.
1422
727549a4
PH
1423TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1424
af46795e
PH
1425PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1426 run a filter in a subprocess. This could lead to confusion in subsequent
1427 lookups in the parent process. There should also be a search_tidyup() at
1428 the end of the subprocess.
1429
d7b47fd0
PH
1430PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1431 only if the host matched helo_try_verify_hosts, which caused the
1432 verification to occur when the EHLO/HELO command was issued. The ACL just
1433 tested the remembered result. Now, if a previous verification attempt has
1434 not happened, "verify = helo" does it there and then.
1435
ee744174
JJ
1436JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1437
b582ab87
PH
1438TK/03 Fix log output including CR from clamd.
1439
41a13e0a
PH
1440PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1441 exist provoked a memory error which could cause a segfault.
1442
f625cc5a
PH
1443PH/15 Installed PCRE 6.2
1444
1445PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1446
21f7af35
PH
1447PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1448 of the problem. Specifically, suggested +O2 rather than +O1 for the
1449 HP-UX compiler.
1450
31480e42
PH
1451PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1452
2d280592
PH
1453PH/20 If a delivery was routed to a non-standard port by means of an SRV
1454 record, the port was not correctly logged when the outgoing_port log
1455 selector was set (it logged the transort's default port).
1456
7cd1141b
PH
1457PH/21 Added support for host-specific ports to manualroute, queryprogram,
1458 fallback_hosts, and "hosts" in the smtp transport.
1459
1460PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1461 host errors such as "Connection refused".
1462
750af86e
PH
1463PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1464 authentication with radiusclient 0.4.9:
1465
1466 - Error returned from rc_read_config was caught wrongly
1467 - Username/password not passed on to radius server due to wrong length.
1468
1469 The presumption is that some radiusclient API changes for 4.51/PH/17
1470 were not taken care of correctly. The code is still untested by me (my
1471 Linux distribution still has 0.3.2 of radiusclient), but it was
1472 contributed by a Radius user.
1473
1474PH/24 When doing a callout, the value of $domain wasn't set correctly when
1475 expanding the "port" option of the smtp transport.
1476
4304270b
TK
1477TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1478 while reading a MIME header. Thanks to Tom Hughes for a patch.
1479
750af86e
PH
1480PH/24 Include config.h inside local_scan.h so that configuration settings are
1481 available.
1482
64ffc24f
PH
1483PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1484 that in an ACL for RCPT (for example), you can examine exactly what was
1485 received.
1486
5dd9625b
PH
1487PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1488 commands, but it was not correctly comparing the address with the actual
1489 client host address. Thus, it would show the EHLO address in Received:
1490 header lines when this was not necessary.
1491
5591031b
PH
1492PH/27 Added the % operator to ${eval:}.
1493
ba18e66a
PH
1494PH/28 Exim tries to create and chdir to its spool directory when it starts;
1495 it should be ignoring failures (because with -C, for example, it has lost
1496 privilege). It wasn't ignoring creation failures other than "already
1497 exists".
1498
9cec981f
PH
1499PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1500 -bV or -d is used.
1501
aa2b5c79
PH
1502PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1503 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1504 too many continuations, the temporary file was not being removed, and the
1505 return code was incorrect.
aa2b5c79 1506
48a53b7f
PH
1507PH/31 Missing "BOOL" in function definition in filtertest.c.
1508
1c59d63b
PH
1509PH/32 Applied Sieve patches from the maintainer.
1510
671012da
TK
1511TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1512
1509d3a8
PH
1513PH/33 Added "verify = not_blind".
1514
1515PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1516 Local/Makefile (with some defaults set). These are used in built scripts
1517 such as exicyclog, but they have never been used in the exim_install
1518 script (though there are many overriding facilities there). I have
1519 arranged that the exim_install script now takes note of these two
1520 settings.
1521
1522PH/35 Installed configuration files for Dragonfly.
1523
2fe1a124
PH
1524PH/36 When a locally submitted message by a trusted user did not contain a
1525 From: header, and the sender address was obtained from -f or from an SMTP
1526 MAIL command, and the trusted user did not use -F to supply a sender
1527 name, $originator_name was incorrectly used when constructing a From:
1528 header. Furthermore, $originator_name was used for submission mode
1529 messages from external hosts without From: headers in a similar way,
1530 which is clearly wrong.
1531
8800895a
PH
1532PH/37 Added control=suppress_local_fixups.
1533
ccfdb010
PH
1534PH/38 When log_selector = +received_sender was set, and the addition of the
1535 sender made the log line's construction buffer exactly full, or one byte
1536 less than full, an overflow happened when the terminating "\n" was
1537 subsequently added.
1538
1130bfb0
PH
1539PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1540 when the result of a list match is failure because a DNS lookup failed.
1541
ebcb507f
PH
1542PH/40 RM_COMMAND is now used in the building process.
1543
c35e155c
PH
1544PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1545 the "build-* directories that it finds.
1546
95d1f782
PH
1547PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1548 address in a domain literal was a prefix of an interface address.
1549
fd6de02e
PH
1550PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1551 when verifying a sender address, unless rewrite_headers is false.
1552
58de37c5
PH
1553PH/44 Wrote a long comment about why errors_to addresses are verified as
1554 recipients, not senders.
1555
261cf466
TF
1556TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1557 the ratelimit ACL was added.
1558
3ee512ff
PH
1559PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1560
e08c430f
PH
1561PH/46 Added extra information about PostgreSQL errors to the error string.
1562
bef5a11f
PH
1563PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1564 avoiding the need to install special zones in a real server. This is
1565 backwards compatible; if it can't find the fake resolver, it drops back.
1566 Thus, both old and new test suites can be run.
1567
7546de58
TF
1568TF/02 Added util/ratelimit.pl
1569
e5d5a95f
TF
1570TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1571 clock is set back in time.
1572
2e88a017
TF
1573TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1574 Candler <B.Candler@pobox.com>.
1575
a5f65aa4
TF
1576TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1577 OK for addresses that are the result of redirections.
1578
e7726cbf
PH
1579PH/48 A number of further additions for the benefit of the new test suite,
1580 including a fake gethostbyname() that interfaces to the fake DNS resolver
1581 (see PH/47 above).
1582
a7fdad5b
TF
1583TF/06 The fix for widen_domains has also been applied to qualify_single and
1584 search_parents which are the other dnslookup options that can cause
1585 header rewrites.
1586
6af56900
PH
1587PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1588 type ("H").
1589
0925ede6
PH
1590PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1591
66afa403
TF
1592TF/07 Exim produced the error message "an SRV record indicated no SMTP
1593 service" if it encountered an MX record with an empty target hostname.
1594 The message is now "an MX or SRV record indicated no SMTP service".
1595
0154e85a
TF
1596TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1597 if the DNS of the sending site is misconfigured. This is quite a
1598 common situation. This change restores the behaviour of treating a
1599 helo verification defer as a failure.
1600
16f12c76
PH
1601PH/51 If self=fail was set on a router, the bounce message did not include the
1602 actual error message.
1603
bbe902f0 1604
e5a9dba6
PH
1605Exim version 4.52
1606-----------------
1607
1608TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1609
22c3b60b
PH
1610PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1611 command itself ended in error, the underlying message about the transport
1612 filter timeout was being overwritten with the pipe command error. Now the
1613 underlying error message should be appended to the second error message.
1614
06a9b4b5
PH
1615TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1616
c1ac6996
PH
1617PH/02 Reduce the amount of output that "make" produces by default. Full output
1618 can still be requested.
1619
9c7a242c
PH
1620PH/03 The warning log line about a condition test deferring for a "warn" verb
1621 was being output only once per connection, rather than after each
1622 occurrence (because it was using the same function as for successful
1623 "warn" verbs). This seems wrong, so I have changed it.
1624
87ba3f5f
PH
1625TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1626 it should not have, which might have caused a crash in the right
1627 circumstances, but probably never did.
1628
1629PH/04 Installed a modified version of Tony Finch's patch to make submission
1630 mode fix the return path as well as the Sender: header line, and to
1631 add a /name= option so that you can make the user's friendly name appear
1632 in the header line.
1633
29aba418
TF
1634TF/03 Added the control = fakedefer ACL modifier.
1635
fe0dab11
TF
1636TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1637 Mark Lowes for thorough testing.
870f6ba8 1638
11d337a4
TK
1639TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1640
1641TK/03 Merged latest SRS patch from Miles Wilton.
1642
415c8f3b
PH
1643PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1644 with the definition in sysexits.h (which is #included earlier).
1645 Fortunately, Exim does not actually use EX_OK. The code used to try to
1646 preserve the sysexits.h value, by assumimg that macro definitions were
1647 scanned for macro replacements. I have been disabused of this notion,
1648 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1649
958541e9
PH
1650PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1651 in the smtp transport. When a block could not be written in a single
1652 write() function, the timeout was being re-applied to each part-write.
1653 This seems wrong - if the receiver was accepting one byte at a time it
1654 would take for ever. The timeout is now adjusted when this happens. It
1655 doesn't have to be particularly precise.
1656
c206415f
TK
1657TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1658 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1659
2a4be8f9
PH
1660PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1661 without a domain if the check to <postmaster@domain> fails.
1662
1cba11c5
SC
1663SC/01 Eximstats: added -xls and the ability to specify output files
1664 (patch written by Frank Heydlauf).
1665
1666SC/02 Eximstats: use FileHandles for outputing results.
1667
1668SC/03 Eximstats: allow any combination of xls, txt, and html output.
1669
1670SC/04 Eximstats: fixed display of large numbers with -nvr option
1671
1672SC/05 Eximstats: fixed merging of reports with empty tables.
1673
1674SC/06 Eximstats: added the -include_original_destination flag
1675
1676SC/07 Eximstats: removed tabs and trailing whitespace.
1677
1005d00e
TK
1678TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1679
1680TK/06 MBOX spool code: Add real "From " MBOX separator line
1681 so the .eml file is really in mbox format (even though
1682 most programs do not really care). Patch from Alex Miller.
1683
1684TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1685 The latter is generated from $received_to and is only set if the
1686 message has one envelope recipient. SA can use these headers,
1687 obviously out-of-the-box. Patch from Alex Miller.
1688
9b4768fa
PH
1689PH/08 The ${def test on a variable was returning false if the variable's
1690 value was "0", contrary to what the specification has always said!
1691 The result should be true unless the variable is empty.
1692
1693PH/09 The syntax error of a character other than { following "${if
1694 def:variable_name" (after optional whitespace) was not being diagnosed.
1695 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1696 accidental colon was present, for example, could give incorrect results.
1697
0d7eb84a
PH
1698PH/10 Tidied the code in a number of places where the st_size field of a stat()
1699 result is used (not including appendfile, where other changes are about
1700 to be made).
1701
1702PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1703 This involved changing a lot of size variables from int to off_t. It
1704 should work with maildirs and everything.
1705
40727bee
TK
1706TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1707 spamd dying while we are connected to it.
1708
554d2369
TF
1709TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1710 <jgh@wizmail.org>
1711
1f922db1
PH
1712PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1713 function for BDB 4.3.
1714
ef213c3b
PH
1715PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1716
8ac170f3
PH
1717PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1718 the sources for PCRE have been re-arranged and more files are now
1719 involved.
1720
b1c749bb
PH
1721PH/15 The code I had for printing potentially long long variables in PH/11
1722 above was not the best (it lost precision). The length of off_t variables
1723 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1724 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1725 to be "long long int" or "long int". This is needed for the internal
1726 formatting function string_vformat().
b1c749bb 1727
4aac9b49
PH
1728PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1729 the configuration file to be ":syslog", then the script "guesses" where
1730 the logs files are, rather than using the compiled in default. In our
1731 case the guess is not the same as the compiled default, so the script
1732 suddenly stopped working when I started to use syslog. The patch checks
1733 to see if log_file_path is "". If so, it attempts to read it from exim
1734 with no configuration file to get the compiled in version, before it
1735 falls back to the previous guessing code."
1736
294520c8
TK
1737TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1738 implementing BATV in an Exim configuration. See NewStuff for the gory
1739 details.
1740
5bd022fe
PH
1741PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1742 Makefile that are specific to HP-UX.
1743
90e9ce59
PH
1744PH/18 If the "use_postmaster" option was set for a recipient callout together
1745 with the "random" option, the postmaster address was used as the MAIL
1746 FROM address for the random test, but not for the subsequent recipient
1747 test. It is now used for both.
1748
5ea81592
PH
1749PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1750 patch removes a few documentation additions to RFC 3028, because the
1751 latest draft now contains them. It adds the new en;ascii-case comparator
1752 and a new error check for 8bit text in MIME parts. Comparator and
1753 require names are now matched exactly. I enabled the subaddress
1754 extension, but it is not well tested yet (read: it works for me)."
1755
c6c2dc1d
PH
1756PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1757 rework some of the code of TK/09 above to avoid the hardwired use of
1758 "%lld" and "long long". Replaced the call to snprintf() with a call to
1759 string_vformat().
1760
fffffe4c
PH
1761PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1762 records point to non-existent hosts", "retry timeout exceeded", and
1763 "retry time not reached for any host after a long failure period".
ca02eafb 1764
9a26b6b2
PH
1765PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1766 experimental DomainKeys support:
1767
1768 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1769 (2) On an error such as an illegally used "control", the wrong name for
1770 the control was given.
1771
1772 These problems did NOT occur unless DomainKeys support was compiled.
1773
4aee0225
PH
1774PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1775
32d668a5
PH
1776PH/24 Added ${if match_ip condition.
1777
8187c3f3
PH
1778PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1779 databases so that it will be absolutely obvious if a crash occurs in the
1780 DB library. This is a regular occurrence (often caused by mis-matched
1781 db.h files).
1782
ff790e47 1783PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1784 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1785 picked up on a user's system that detects such things. There doesn't seem
1786 to be a gcc warning option for this - only an attribute that has to be
1787 put on the function's prototype. It seems that in Fedora Core 4 they have
1788 set this on a number of new functions. No doubt there will be more in due
1789 course.
ff790e47 1790
5417f6d1
PH
1791PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1792 specify a transport. However, if an address that was verified by such a
1793 router was the subject of a callout, Exim crashed because it tried to
1794 read the rcpt_include_affixes from the non-existent transport. Now it
1795 just assumes that the setting of that option is false. This bug was
1796 introduced by 4.51/PH/31.
1797
59cf8544
PH
1798PH/28 Changed -d+all to exclude +memory, because that information is very
1799 rarely of interest, but it makes the output a lot bigger. People tend to
1800 do -d+all out of habit.
1801
e7ad8a65
PH
1802PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1803 code in os-type was giving problems when libc.so lives in lib64, like on
1804 x86_64 Fedora Core.
1805
ade42478
PH
1806PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1807 aren't the modern standard, and it seems that some systems' include files
1808 don't always have them. Exim was already checking for some of the newer
1809 ones like T_AAAA, and defining it itself. I've added checks for all the
1810 record types that Exim uses.
1811
182ad5cf
PH
1812PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1813 not automatically generating a new one, as it is supposed to. This
1814 prevented TLS from working. If the file did exist, but contained invalid
1815 data, a new version was generated, as expected. It was only the case of a
1816 non-existent file that was broken.
1817
b0d9fc80
TK
1818TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1819 with a change in libdomainkeys > 0.64.
1820
1821TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1822 from DNS. If the selector record carries the flag, it now has
1823 precedence over the domain-wide flag.
1824
1825TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1826
47c7a64a
PH
1827PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1828 the use of a port name that isn't defined in /etc/services) occurred, the
1829 message was deferred as in a normal delivery, and thus remained on the
1830 spool, instead of being failed because of the mua_wrapper setting. This
1831 is now fixed, and I tidied up some of the mua_wrapper messages at the
1832 same time.
1833
a388bce4
SC
1834SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1835 the messages in a hash of arrays rather than using individual hashes.
1836 This is a bit cleaner and results in dramatic memory savings, albeit
1837 at a slight CPU cost.
1838
1839SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1840 as requested by Marc Sherman.
1841
1842SC/10 Eximstats: added histograms for user specified patterns as requested
1843 by Marc Sherman.
1844
0793e4ed
SC
1845SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1846
c58b88df
PH
1847PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1848 fopen() in the content-scanning modules that did not already have it.
1849
e7ad8a65 1850
7982096b
PH
1851Exim version 4.51
1852-----------------
1853
1a46a8c5
PH
1854TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1855 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1856
2f079f46 1857TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1858
1859TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1860
1861PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1862 to test Sieve filters that use "vacation".
1863
1864PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1865 that changes the way the GnuTLS parameters are stored in the cache file.
1866 The new format can be generated externally. For backward compatibility,
1867 if the data in the cache doesn't make sense, Exim assumes it has read an
1868 old-format file, and it generates new data and writes a new file. This
1869 means that you can't go back to an older release without removing the
1870 file.
1871
1872PH/03 A redirect router that has both "unseen" and "one_time" set does not
1873 work if there are any delivery delays because "one_time" forces the
1874 parent to be marked "delivered", so its unseen clone is never tried
1875 again. For this reason, Exim now forbids the simultaneous setting of
1876 these two options.
1877
1878PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1879 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1880 entry if you want to know the details. The fix, however, neglected to
1881 consider the case when local delivery batching is involved. The test for
1882 "previously delivered" was not happening when checking to see if an
1883 address could be batched with a previous (undelivered) one; under
1884 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1885 address.
1a46a8c5
PH
1886
1887PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1888 in its include files, and this causes problems building Exim.
1889
1890PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1891 header_syntax) but Exim was just ignoring anything given after a slash.
1892 In particular, this caused confusion with an attempt to use "verify =
1893 reverse_host_lookup/defer_ok". An error is now given when options are
1894 supplied for verify items that do not have them. (Maybe reverse_host_
1895 lookup should have a defer_ok option, but that's a different point.)
1896
1897PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1898 defined by RFC 821) to 2048, because there were problems with some AUTH
1899 commands, and RFC 1869 says the size should be increased for extended
1900 SMTP commands that take arguments.
1901
1902PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1903 Finch).
1904
1905PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1906 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1907
49c2d5ea
PH
1908PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1909 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1910 whatever). Otherwise the password may appear in the log. Following change
1911 PH/42 below, there is no longer a chance of it appearing in a bounce
1912 message.
49c2d5ea 1913
bf759a8b
PH
1914PH/11 Installed exipick version 20050225.0 from John Jetmore.
1915
83364d30
PH
1916PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1917 of its addresses was ever tried. (Bugzilla bug #2.)
1918
7999bbd7
PH
1919PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1920 the result incorrectly in the debug output. (It correctly added a newline
1921 to what was transported.)
1922
7dbf77c9
PH
1923TF/01 Added $received_time.
1924
74e0617f
PH
1925PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1926 commented out examples of how to interface to a virus scanner and to
1927 SpamAssassin. Also added commented examples of av_scanner and
1928 spamd_address settings.
1929
2f079f46
PH
1930PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1931 and controls are allowed in which ACLs. There were a couple of minor
1932 errors. Some of the entries in the conditions table (which is a table of
1933 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1934 negation of where the condition IS allowed.
1935
8c841523
PH
1936PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1937
7766a4f0
PH
1938PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1939 header file does not have a version number, so I've had to invent a new
1940 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1941 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1942 radiusclient), but it was contributed by a Radius user.
1943
8b417f2c
PH
1944PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1945 files or directories, for OpenSSL.
1946
901f42cb
PH
1947PH/19 When an Exim process that is running as root has to create an Exim log
1948 file, it does so in a subprocess that runs as exim:exim so as to get the
1949 ownership right at creation (otherwise, other Exim processes might see
1950 the file with the wrong ownership). There was no test for failure of this
1951 fork() call, which would lead to the process getting stuck as it waited
1952 for a non-existent subprocess. Forks do occasionally fail when resources
1953 run out. I reviewed all the other calls to fork(); they all seem to check
1954 for failure.
1955
f9b9210e
PH
1956PH/20 When checking for unexpected SMTP input at connect time (before writing
1957 the banner), Exim was not dealing correctly with a non-positive return
1958 from the read() function. If the client had disconnected by this time,
1959 the result was a log entry for a synchronization error with an empty
1960 string after "input=" when read() returned zero. If read() returned -1
1961 (an event I could not check), uninitialized data bytes were printed.
1962 There were reports of junk text (parts of files, etc) appearing after
1963 "input=".
1964
54cdb463
PH
1965PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1966
cf00dad6
PH
1967PH/22 Added support for macro redefinition, and (re)definition in between
1968 driver and ACL definitions.
1969
acb1b346
PH
1970PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1971 forgetting to use the resulting value; it was using the unexpanded value.
1972
c5ddb310
PH
1973PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1974 hadn't been configured. The fix is from Juergen Kreileder, who
1975 understands it better than I do:
1976
1977 "Here's what I see happening with three configured cyrus_sasl
1978 authenticators configured (plain, login, cram-md5):
1979
1980 On startup auth_cyrus_sasl_init() gets called for each of these.
1981 This means three calls to sasl_listmech() without a specified mech_list.
1982 => SASL tests which mechs of all available mechs actually work
1983 => three warnings about OTP not working
1984 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1985
1986 With the patch, sasl_listmech() also gets called three times. But now
1987 SASL's mech_list option is set to the server_mech specified in the the
1988 authenticator. Or in other words, the answer from sasl_listmech()
1989 gets limited to just the mech you're testing for (which is different
1990 for each call.)
1991 => the return list contains just 'plain' or 'login', 'cram-md5' or
1992 nothing depending on the value of ob->server_mech.
1993
1994 I've just tested the patch: Authentication still works fine,
1995 unavailable mechs specified in the exim configuration are still
1996 caught, and the auth.log warnings about OTP are gone."
1997
31619da6
PH
1998PH/25 When debugging is enabled, the contents of the command line are added
1999 to the debugging output, even when log_selector=+arguments is not
2000 specified.
2001
bebaf0fc
PH
2002PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2003 answer is "GNU", and only if the return is "GNU/something" is the answer
2004 "Linux".
2005
475fe28a
PH
2006PH/27 $acl_verify_message is now set immediately after the failure of a
2007 verification in an ACL, and so is available in subsequent modifiers. In
2008 particular, the message can be preserved by coding like this:
2009
2010 warn !verify = sender
2011 set acl_m0 = $acl_verify_message
2012
2013 Previously, $acl_verify_message was set only while expanding "message"
2014 and "log_message" when a very denied access.
2015
7e8bec7a
PH
2016PH/28 Modified OS/os.c-Linux with
2017
2018 -#ifndef OS_LOAD_AVERAGE
2019 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2020
2021 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2022 nomenclature these days.)
2023
e4a89c47
PH
2024PH/29 Installed patch from the Sieve maintainer that adds the options
2025 sieve_useraddress and sieve_subaddress to the redirect router.
2026
5ca2a9a1
PH
2027PH/30 In these circumstances:
2028 . Two addresses routed to the same list of hosts;
2029 . First host does not offer TLS;
2030 . First host accepts first address;
2031 . First host gives temporary error to second address;
2032 . Second host offers TLS and a TLS session is established;
2033 . Second host accepts second address.
2034 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2035 and peerdn, if requested) that were in fact used only for the second
2036 address.
7e8bec7a 2037
c688b954
PH
2038PH/31 When doing a callout as part of verifying an address, Exim was not paying
2039 attention to any local part prefix or suffix that was matched by the
2040 router that accepted the address. It now behaves in the same way as it
2041 does for delivery: the affixes are removed from the local part unless
2042 rcpt_include_affixes is set on the transport.
2043
fed77020
PH
2044PH/32 Add the sender address, as F=<...>, to the log line when logging a
2045 timeout during the DATA phase of an incoming message.
2046
7fe1560f
PH
2047PH/33 Sieve envelope tests were broken for match types other than :is. I have
2048 applied a patch sanctioned by the Sieve maintainer.
c688b954 2049
ebb6e6d5
PH
2050PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2051 the uid or gid is negative. A case of a negative gid caused this to be
2052 noticed. The fix allows for either to be negative.
2053
9c4e8f60
PH
2054PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2055 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2056 overlooked.
2057
2058PH/36 The change PH/12 above was broken. Fixed it.
2059
d7174846
PH
2060PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2061 the grounds that routing the same address twice would always produce the
2062 same answer. This might have been true once, but it is certainly no
2063 longer true now. Routing a child address may depend on the previous
2064 routing that produced that child. Some complicated redirection strategies
2065 went wrong when messages had multiple recipients, and made Exim's
2066 behaviour dependent on the order in which the addresses were given.
2067
2068 I have moved the duplicate checking until after the routing is complete.
2069 Exim scans the addresses that are assigned to local and remote
2070 transports, and removes any duplicates. This means that more work will be
2071 done, as duplicates will always all be routed, but duplicates are
2072 presumably rare, so I don't expect this is of any significance.
2073
2074 For deliveries to pipes, files, and autoreplies, the duplicate checking
2075 still happens during the routing process, since they are not going to be
2076 routed further.
2077
cfe75fc3
PH
2078PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2079 It corrects a timeout issue with spamd. This is Ian's comment: "The
2080 background is that sometimes spamd either never reads data from a
2081 connection it has accepted, or it never writes response data. The exiscan
2082 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2083 blindly assumes that writes won't block so it may never time out."
2084
be22d70e
PH
2085PH/39 Allow G after quota size as well as K and M.
2086
0612b098
PH
2087PH/40 The value set for $authenticated_id in an authenticator may not contain
2088 binary zeroes or newlines because the value is written to log lines and
2089 to spool files. There was no check on this. Now the value is run through
2090 the string_printing() function so that such characters are converted to
2091 printable escape sequences.
2092
2e0c1448
PH
2093PH/41 $message_linecount is a new variable that contains the total number of
2094 lines in the message. Compare $body_linecount, which is the count for the
2095 body only.
2096
447d236c
PH
2097PH/42 Exim no longer gives details of delivery errors for specific addresses in
2098 bounce and delay warning messages, except in certain special cases, which
2099 are as follows:
2100
2101 (a) An SMTP error message from a remote host;
2102 (b) A message specified in a :fail: redirection;
2103 (c) A message specified in a "fail" command in a system filter;
2104 (d) A message specified in a FAIL return from the queryprogram router;
2105 (e) A message specified by the cannot_route_message router option.
2106
2107 In these cases only, Exim does include the error details in bounce and
2108 warning messages. There are also a few cases where bland messages such
2109 as "unrouteable address" or "local delivery error" are given.
2110
d20976dc
PH
2111PH/43 $value is now also set for the "else" part of a ${run expansion.
2112
f656d135
PH
2113PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2114 being worked on, but at least Exim now implements the latest version to
2115 play with."
2116
2e2a30b4
PH
2117PH/45 In a pipe transport, although a timeout while waiting for the pipe
2118 process to complete was treated as a delivery failure, a timeout while
2119 writing the message to the pipe was logged, but erroneously treated as a
2120 successful delivery. Such timeouts include transport filter timeouts. For
2121 consistency with the overall process timeout, these timeouts are now
2122 treated as errors, giving rise to delivery failures by default. However,
2123 there is now a new Boolean option for the pipe transport called
2124 timeout_defer, which, if set TRUE, converts the failures into defers for
2125 both kinds of timeout. A transport filter timeout is now identified in
2126 the log output.
2127
9176e9f0
PH
2128PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2129 systems where "make" and "gmake" are different, calling "gmake" at top
2130 level broke things. I've arranged for the value of $(MAKE) to be passed
2131 from the Makefile to this script so that it can call the same version of
2132 "make".
2133
7982096b 2134
bbe902f0
PH
2135A note about Exim versions 4.44 and 4.50
2136----------------------------------------
2137
2138Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2139changes of various kinds. As a consequence, a big documentation update was
2140needed. This delayed the release for rather longer than seemed good, especially
2141in the light of a couple of (minor) security issues. Therefore, the changes
2142that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2143release. So 4.44 and 4.50 are in effect two different branches that both start
2144from 4.43.
2145
2146I have left the 4.50 change log unchanged; it contains all the changes since
21474.43. The change log for 4.44 is below; many of its items are identical to
2148those for 4.50. This seems to be the most sensible way to preserve the
2149historical information.
2150
2151
f7b63901 2152Exim version 4.50
495ae4b0
PH
2153-----------------
2154
5fe762f6
PH
2155 1. Minor wording change to the doc/README.SIEVE file.
2156
139059f6 2157 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2158 computation of the current number of files was incorrect.
495ae4b0 2159
7086e875
PH
2160 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2161 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2162 place.
2163
35af9f61
PH
2164 4. Give more explanation in the error message when the command for a transport
2165 filter fails to execute.
2166
b668c215
PH
2167 5. There are several places where Exim runs a non-Exim command in a
2168 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2169 was being done only for the command run by the queryprogram router. It is
2170 now done for all such subprocesses. The other cases are: ${run, transport
2171 filters, and the commands run by the lmtp and pipe transports.
2172
a494b1e1
PH
2173 6. Added CONFIGURE_GROUP build-time option.
2174
2175 7. Some older OS have a limit of 256 on the maximum number of file
2176 descriptors. Exim was using setrlimit() to set 1000 as a large value
2177 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2178 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2179
c5fcb476
PH
2180 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2181 was an oversight, and furthermore, ever since the addition of extra
2182 controls (e.g. 4.43/32), the checks on when to allow different forms of
2183 "control" were broken. There should now be diagnostics for all cases when a
2184 control that does not make sense is encountered.
2185
69358f02
PH
2186 9. Added the /retain_sender option to "control=submission".
2187
5be20824
PH
218810. $recipients is now available in the predata ACL (oversight).
2189
eb2c0248
PH
219011. Tidy the search cache before the fork to do a delivery from a message
2191 received from the command line. Otherwise the child will trigger a lookup
2192 failure and thereby defer the delivery if it tries to use (for example) a
2193 cached ldap connection that the parent has called unbind on.
2194
2a3eea10
PH
219512. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2196 of $address_data from the recipient verification was clobbered by the
2197 sender verification.
2198
219913. The value of address_data from a sender verification is now available in
2200 $sender_address_data in subsequent conditions in the ACL statement.
2201
23c7ff99
PH
220214. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2203
4deaf07d
PH
220415. Added a new option "connect=<time>" to callout options, to set a different
2205 connection timeout.
2206
926e1192
PH
220716. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2208 was its contents. (It was OK if the option was not defined at all.)
2209
650edc6f
PH
221017. A "Completed" log line is now written for messages that are removed from
2211 the spool by the -Mrm option.
2212
2c7db3f5
PH
221318. New variables $sender_verify_failure and $recipient_verify_failure contain
2214 information about exactly what failed.
2215
3d235903
PH
221619. Added -dd to debug only the daemon process.
2217
7c7ad977
PH
221820. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2219 handles timeouts, both on the server side and network timeouts. Renamed the
2220 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2221
981756db
PH
222221. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2223 It is now set to "smtps".
2224
d4eb88df
PH
222522. $host_address is now set to the target address during the checking of
2226 ignore_target_hosts.
2227
222823. When checking ignore_target_hosts for an ipliteral router, no host name was
2229 being passed; this would have caused $sender_host_name to have been used if
2230 matching the list had actually called for a host name (not very likely,
2231 since this list is usually IP addresses). A host name is now passed as
2232 "[x.x.x.x]".
2233
7d468ab8
PH
223424. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2235 code that specifies a non-restarting handler (typically sigaction() in
2236 modern systems) in an attempt to fix a rare and obscure crash bug.
2237
223825. Narrowed the window for a race in the daemon that could cause it to ignore
2239 SIGCHLD signals. This is not a major problem, because they are used only to
2240 wake it up if nothing else does.
2241
62c0818f
PH
224226. A malformed maildirsize file could cause Exim to calculate negative values
2243 for the mailbox size or file count. Odd effects could occur as a result.
2244 The maildirsize information is now recalculated if the size or filecount
2245 end up negative.
2246
26034054
PH
224727. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2248 support for a long time. Removed HAVE_SYS_VFS_H.
2249
af66f652
PH
225028. Installed the latest version of exipick from John Jetmore.
2251
90af77f4
PH
225229. In an address list, if the pattern was not a regular expression, an empty
2253 subject address (from a bounce message) matched only if the pattern was an
2254 empty string. Non-empty patterns were not even tested. This was the wrong
2255 because it is perfectly reasonable to use an empty address as part of a
2256 database query. An empty address is now tested by patterns that are
2257 lookups. However, all the other forms of pattern expect the subject to
2258 contain a local part and a domain, and therefore, for them, an empty
2259 address still always fails if the pattern is not itself empty.
2260
d8ef3577
PH
226130. Exim went into a mad DNS loop when attempting to do a callout where the
2262 host was specified on an smtp transport, and looking it up yielded more
2263 than one IP address.
2264
5cb8cbc6
PH
226531. Re-factored the code for checking spool and log partition space into a
2266 function that finds that data and another that does the check. The former
2267 is then used to implement four new variables: $spool_space, $log_space,
2268 $spool_inodes, and $log_inodes.
2269
14702f5b
PH
227032. The RFC2047 encoding function was originally intended for short strings
2271 such as real names; it was not keeping to the 75-character limit for
2272 encoded words that the RFC imposes. It now respects the limit, and
2273 generates multiple encoded words if necessary. To be on the safe side, I
2274 have increased the buffer size for the ${rfc2047: expansion operator from
2275 1024 to 2048 bytes.
2276
063b1e99
PH
227733. It is now permitted to omit both strings after an "if" condition; if the
2278 condition is true, the result is "true". As before, when the second string
2279 is omitted, a false condition yields an empty string. This makes it less
2280 cumbersome to write custom ACL and router conditions.
2281
652e1b65
PH
228234. Failure to deliver a bounce message always caused it to be frozen, even if
2283 there was an errors_to setting on the router. The errors_to setting is now
2284 respected.
2285
6f0c9a4f
PH
228635. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2287 canonical form (fully expanded) before being placed in
2288 $sender_host_address.
2289
33397d19
PH
229036. The table in the code that translates DNS record types into text (T_A to
2291 "A" for instance) was missing entries for NS and CNAME. It is just possible
2292 that this could have caused confusion if both these types were looked up
2293 for the same domain, because the text type is used as part of Exim's
2294 per-process caching. But the chance of anyone hitting this buglet seems
2295 very small.
2296
7bb56e1f
PH
229737. The dnsdb lookup has been extended in a number of ways.
2298
2299 (1) There is a new type, "zns", which walks up the domain tree until it
2300 finds some nameserver records. It should be used with care.
2301
ea3bc19b
PH
2302 (2) There is a new type, "mxh", which is like "mx" except that it returns
2303 just the host names, not the priorities.
2304
2305 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2306 looked up. The behaviour when one of the lookups defers can be
2307 controlled by a keyword.
7bb56e1f 2308
ea3bc19b 2309 (4) It is now possible to specify the separator character for use when
7bb56e1f 2310 multiple records are returned.
33397d19 2311
0bcb2a0e
PH
231238. The dnslists ACL condition has been extended: it is now possible to supply
2313 a list of IP addresses and/or domains to be looked up in a particular DNS
2314 domain.
2315
2ac0e484
PH
231639. Added log_selector=+queue_time_overall.
2317
4e1fde53
PH
231840. When running the queue in the test harness, wait just a tad after forking a
2319 delivery process, to get repeatability of debugging output.
2320
de365ded
PH
232141. Include certificate and key file names in error message when GnuTLS fails
2322 to set them up, because the GnuTLS error message doesn't include the name
2323 of the failing file when there is a problem reading it.
2324
f05da2e8
PH
232542. Allow both -bf and -bF in the same test run.
2326
d6453af2
PH
232743. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2328
f7b63901
PH
232944. The "Exiscan patch" is now merged into the mainline Exim source.
2330
233145. Sometimes the final signoff response after QUIT could fail to get
2332 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2333 < 0 before doing a fflush(). This bug looks as though it goes back to the
2334 introduction of TLS in release 3.20, but "sometimes" must have been rare
2335 because the tests only now provoked it.
2336
a444213a
PH
233746. Reset the locale to "C" after calling embedded Perl, in case it was changed
2338 (this can affect the format of dates).
2339
0ec020ea
PH
234047. exim_tidydb, when checking for the continued existence of a message for
2341 which it has found a message-specific retry record, was not finding
2342 messages that were in split spool directories. Consequently, it was
2343 deleting retry records that should have stayed in existence.
2344
b1206957
PH
234548. Steve fixed some bugs in eximstats.
2346
234749. The SPA authentication driver was not abandoning authentication and moving
2348 on to the next authenticator when an expansion was forced to fail,
2349 contradicting the general specification for all authenticators. Instead it
2350 was generating a temporary error. It now behaves as specified.
2351
26dd5a95
PH
235250. The default ordering of permitted cipher suites for GnuTLS was pessimal
2353 (the order specifies the preference for clients). The order is now AES256,
2354 AES128, 3DES, ARCFOUR128.
2355
343b2385
PH
235651. Small patch to Sieve code - explicitly set From: when generating an
2357 autoreply.
2358
1c5466b9
PH
235952. Exim crashed if a remote delivery caused a very long error message to be
2360 recorded - for instance if somebody sent an entire SpamAssassin report back
2361 as a large number of 550 error lines. This bug was coincidentally fixed by
2362 increasing the size of one of Exim's internal buffers (big_buffer) that
2363 happened as part of the Exiscan merge. However, to be on the safe side, I
2364 have made the code more robust (and fixed the comments that describe what
2365 is going on).
2366
55ee9ee3
PH
236753. Now that there can be additional text after "Completed" in log lines (if
2368 the queue_time_overall log selector is set), a one-byte patch to exigrep
2369 was needed to allow it to recognize "Completed" as not the last thing in
2370 the line.
2371
d38f8232
PH
237254. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2373 patch that reportedly fixes this has been added. I am not expert enough to
2374 create a test for it. This is what the patch creator wrote:
2375
2376 "I found a little strange behaviour of ldap code when working with
2377 Windows 2003 AD Domain, where users was placed in more than one
2378 Organization Units. When I tried to give exim partial DN, the exit code
2379 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2380 But simultaneously result of request was absolutely normal ldap result,
2381 so I produce this patch..."
2382
3295e65b
PH
2383 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2384 REFERENCE, so I have modified the code to exclude the patch when that macro
2385 is not defined.
2386
7102e136
PH
238755. Some experimental protocols are using DNS PTR records for new purposes. The
2388 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2389 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2390 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2391 CAN-2005-0021
7102e136 2392
3ca0ba97
PH
239356. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2394
c2bcbe20
PH
239557. Double the size of the debug message buffer (to 2048) so that more of very
2396 long debug lines gets shown.
2397
18ce445d
PH
239858. The exicyclog utility now does better if the number of log files to keep
2399 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2400
1f5b4c3d
PH
240159. Two changes related to the smtp_active_hostname option:
2402
2403 (1) $smtp_active_hostname is now available as a variable.
2404 (2) The default for smtp_banner uses $smtp_active_hostname instead
2405 of $primary_hostname.
2406
b975ba52
PH
240760. The host_aton() function is supposed to be passed a string that is known
2408 to be a valid IP address. However, in the case of IPv6 addresses, it was
2409 not checking this. This is a hostage to fortune. Exim now panics and dies
2410 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2411 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2412 components; fortuitously, this particular loophole had already been fixed
2413 by change 4.50/55 above.
2414
2415 If there are any other similar loopholes, the new check in host_aton()
2416 itself should stop them being exploited. The report I received stated that
2417 data on the command line could provoke the exploit when Exim was running as
2418 exim, but did not say which command line option was involved. All I could
2419 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2420 running as the user.
ea3a6f44 2421 CAN-2005-0021
85b87bc2
PH
2422
242361. There was a buffer overflow vulnerability in the SPA authentication code
2424 (which came originally from the Samba project). I have added a test to the
2425 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2426 CAN-2005-0022
b975ba52 2427
17ffcae7
PH
242862. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2429 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2430
d95f9fdb
PH
243163. The daemon start-up calls getloadavg() while still root for those OS that
2432 need the first call to be done as root, but it missed one case: when
2433 deliver_queue_load_max is set with deliver_drop_privilege. This is
2434 necessary for the benefit of the queue runner, because there is no re-exec
2435 when deliver_drop_privilege is set.
2436
86b8287f
PH
243764. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2438 This has been fixed.
2439
60dc5e56
PH
244065. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2441 was in use, was not putting the data itself into the right store pool;
2442 consequently, it could be overwritten for a subsequent message in the same
2443 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2444 the caching.)
2445
533244af
PH
244666. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2447
a5a28604
PH
244867. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2449 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2450 the function were treating the return as a boolean value, which happened to
2451 work because 0=false and not-0=true, but is not correct code.
2452
7e634d24
PH
245368. The host_aton() function was not handling scoped IPv6 addresses (those
2454 with, for example, "%eth0" on the end) correctly.
2455
3e11c26b
PH
245669. Fixed some compiler warnings in acl.c for the bitmaps specified with
2457 negated items (that is, ~something) in unsigned ints. Some compilers
2458 apparently mutter when there is no cast.
2459
6729cf78
PH
246070. If an address verification called from an ACL failed, and did not produce a
2461 user-specific message (i.e. there was only a "system" message), nothing was
2462 put in $acl_verify_message. In this situation, it now puts the system
2463 message there.
2464
00f00ca5
PH
246571. Change 4.23/11 added synchronization checking at the start of an SMTP
2466 session; change 4.31/43 added the unwanted input to the log line - except
2467 that it did not do this in the start of session case. It now does.
2468
c9bdd01c
PH
246972. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2470 This is wrong and can cause the other end to generate a synchronization
2471 error if it is another Exim or anything else that does the synchronization
2472 check. A QUIT command is no longer sent after a timeout.
2473
d43194df
PH
247473. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2475 during host lookups.
2476
fe5b5d0b
PH
247774. The defer_ok option of callout verification was not working if it was used
2478 when verifying addresses in header lines, that is, for this case:
2479
2480 verify = header_sender/callout=defer_ok
2481
76a2d7ba
PH
248275. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2483 those file descriptors could be used for SMTP connections. If anything
2484 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2485 could be sent to the SMTP client, causing chaos. The daemon now opens
2486 stdin, stdout, and stderr to /dev/null when it puts itself into the
2487 background.
2488
248976. Arrange for output from Perl's "warn" command to be written to Exim's main
2490 log by default. The user can override this with suitable Perl magic.
2491
04f7d5b9
PH
249277. The use of log_message on a "discard" ACL verb, which is supposed to add to
2493 the log message when discard triggers, was not working for the DATA ACL or
2494 for the non-SMTP ACL.
2495
bc60667e
PH
249678. Error message wording change in sieve.c.
2497
bb6e88ff
PH
249879. If smtp_accept_max_per_host was set, the number of connections could be
2499 restricted to fewer than expected, because the daemon was trying to set up
2500 a new connection before checking whether the processes handling previous
2501 connections had finished. The check for completed processes is now done
2502 earlier. On busy systems, this bug wouldn't be noticed because something
2503 else would have woken the daemon, and it would have reaped the completed
2504 process earlier.
2505
1e70f85b
PH
250680. If a message was submitted locally by a user whose login name contained one
2507 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2508 It caused a spool format error. I have fixed the spool reading code. A
2509 related problem was that the "from" clause in the Received: line became
2510 illegal because of the space(s). It is now covered by ${quote_local_part.
2511
251281. Included the latest eximstats from Steve (adds average sizes to HTML Top
2513 tables).
2514
4e01f9d6
PH
251582. Updated OS/Makefile-AIX as per message from Mike Meredith.
2516
1ee1cef2
PH
251783. Patch from Sieve maintainer to fix unterminated string problem in
2518 "vacation" handling.
2519
6e2b4ccc
PH
252084. Some minor changes to the Linux configuration files to help with other
2521 OS variants using glibc.
2522
8e669ac1
PH
252385. One more patch for Sieve to update vacation handling to latest spec.
2524
495ae4b0 2525
bbe902f0
PH
2526----------------------------------------------------
2527See the note above about the 4.44 and 4.50 releases.
2528----------------------------------------------------
2529
2530
2531Exim version 4.44
2532-----------------
2533
2534 1. Change 4.43/35 introduced a bug that caused file counts to be
2535 incorrectly computed when quota_filecount was set in an appendfile
2536 transport
2537
2538 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2539 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2540 place.
2541
2542 3. Give more explanation in the error message when the command for a transport
2543 filter fails to execute.
2544
2545 4. There are several places where Exim runs a non-Exim command in a
2546 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2547 was being done only for the command run by the queryprogram router. It is
2548 now done for all such subprocesses. The other cases are: ${run, transport
2549 filters, and the commands run by the lmtp and pipe transports.
2550
2551 5. Some older OS have a limit of 256 on the maximum number of file
2552 descriptors. Exim was using setrlimit() to set 1000 as a large value
2553 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2554 systems. I've change it so that if it can't get 1000, it tries for 256.
2555
2556 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2557 was an oversight, and furthermore, ever since the addition of extra
2558 controls (e.g. 4.43/32), the checks on when to allow different forms of
2559 "control" were broken. There should now be diagnostics for all cases when a
2560 control that does not make sense is encountered.
2561
2562 7. $recipients is now available in the predata ACL (oversight).
2563
2564 8. Tidy the search cache before the fork to do a delivery from a message
2565 received from the command line. Otherwise the child will trigger a lookup
2566 failure and thereby defer the delivery if it tries to use (for example) a
2567 cached ldap connection that the parent has called unbind on.
2568
2569 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2570 of $address_data from the recipient verification was clobbered by the
2571 sender verification.
2572
257310. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2574 was its contents. (It was OK if the option was not defined at all.)
2575
257611. A "Completed" log line is now written for messages that are removed from
2577 the spool by the -Mrm option.
2578
257912. $host_address is now set to the target address during the checking of
2580 ignore_target_hosts.
2581
258213. When checking ignore_target_hosts for an ipliteral router, no host name was
2583 being passed; this would have caused $sender_host_name to have been used if
2584 matching the list had actually called for a host name (not very likely,
2585 since this list is usually IP addresses). A host name is now passed as
2586 "[x.x.x.x]".
2587
258814. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2589 code that specifies a non-restarting handler (typically sigaction() in
2590 modern systems) in an attempt to fix a rare and obscure crash bug.
2591
259215. Narrowed the window for a race in the daemon that could cause it to ignore
2593 SIGCHLD signals. This is not a major problem, because they are used only to
2594 wake it up if nothing else does.
2595
259616. A malformed maildirsize file could cause Exim to calculate negative values
2597 for the mailbox size or file count. Odd effects could occur as a result.
2598 The maildirsize information is now recalculated if the size or filecount
2599 end up negative.
2600
260117. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2602 support for a long time. Removed HAVE_SYS_VFS_H.
2603
ea3a6f44 260418. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2605
260619. Allow an empty sender to be matched against a lookup in an address list.
2607 Previously the only cases considered were a regular expression, or an
2608 empty pattern.
2609
261020. Exim went into a mad DNS lookup loop when doing a callout where the
2611 host was specified on the transport, if the DNS lookup yielded more than
2612 one IP address.
2613
ea3a6f44
NM
261421. The RFC2047 encoding function was originally intended for short strings
2615 such as real names; it was not keeping to the 75-character limit for
2616 encoded words that the RFC imposes. It now respects the limit, and
2617 generates multiple encoded words if necessary. To be on the safe side, I
2618 have increased the buffer size for the ${rfc2047: expansion operator from
2619 1024 to 2048 bytes.
bbe902f0 2620
ea3a6f44
NM
262122. Failure to deliver a bounce message always caused it to be frozen, even if
2622 there was an errors_to setting on the router. The errors_to setting is now
2623 respected.
bbe902f0
PH
2624
262523. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2626 canonical form (fully expanded) before being placed in
2627 $sender_host_address.
2628
262924. Updated eximstats to version 1.33
2630
ea3a6f44
NM
263125. Include certificate and key file names in error message when GnuTLS fails
2632 to set them up, because the GnuTLS error message doesn't include the name
2633 of the failing file when there is a problem reading it.
bbe902f0
PH
2634
263526. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2636 As per change 25.
bbe902f0 2637
ea3a6f44
NM
263827. Reset the locale to "C" after calling embedded Perl, in case it was changed
2639 (this can affect the format of dates).
bbe902f0 2640
ea3a6f44
NM
264128. exim_tidydb, when checking for the continued existence of a message for
2642 which it has found a message-specific retry record, was not finding
2643 messages that were in split spool directories. Consequently, it was
2644 deleting retry records that should have stayed in existence.
bbe902f0
PH
2645
264629. eximstats updated to version 1.35
2647 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2648 1.35 - bugfix such that pie charts by volume are generated correctly
2649
ea3a6f44
NM
265030. The SPA authentication driver was not abandoning authentication and moving
2651 on to the next authenticator when an expansion was forced to fail,
2652 contradicting the general specification for all authenticators. Instead it
2653 was generating a temporary error. It now behaves as specified.
bbe902f0 2654
ea3a6f44
NM
265531. The default ordering of permitted cipher suites for GnuTLS was pessimal
2656 (the order specifies the preference for clients). The order is now AES256,
2657 AES128, 3DES, ARCFOUR128.
bbe902f0 2658
ea3a6f44
NM
265931. Small patch to Sieve code - explicitly set From: when generating an
2660 autoreply.
bbe902f0 2661
ea3a6f44
NM
266232. Exim crashed if a remote delivery caused a very long error message to be
2663 recorded - for instance if somebody sent an entire SpamAssassin report back
2664 as a large number of 550 error lines. This bug was coincidentally fixed by
2665 increasing the size of one of Exim's internal buffers (big_buffer) that
2666 happened as part of the Exiscan merge. However, to be on the safe side, I
2667 have made the code more robust (and fixed the comments that describe what
2668 is going on).
bbe902f0 2669
ea3a6f44
NM
267033. Some experimental protocols are using DNS PTR records for new purposes. The
2671 keys for these records are domain names, not reversed IP addresses. The
2672 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2673 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2674 CAN-2005-0021
2675
ea3a6f44
NM
267634. The host_aton() function is supposed to be passed a string that is known
2677 to be a valid IP address. However, in the case of IPv6 addresses, it was
2678 not checking this. This is a hostage to fortune. Exim now panics and dies
2679 if the condition is not met. A case was found where this could be provoked
2680 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2681 components; fortuitously, this particular loophole had already been fixed
2682 by change 4.50/55 or 4.44/33 above.
2683
2684 If there are any other similar loopholes, the new check in host_aton()
2685 itself should stop them being exploited. The report I received stated that
2686 data on the command line could provoke the exploit when Exim was running as
2687 exim, but did not say which command line option was involved. All I could
2688 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2689 running as the user.
bbe902f0
PH
2690 CAN-2005-0021
2691
ea3a6f44
NM
269235. There was a buffer overflow vulnerability in the SPA authentication code
2693 (which came originally from the Samba project). I have added a test to the
2694 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2695 CAN-2005-0022
2696
ea3a6f44
NM
269736. The daemon start-up calls getloadavg() while still root for those OS that
2698 need the first call to be done as root, but it missed one case: when
2699 deliver_queue_load_max is set with deliver_drop_privilege. This is
2700 necessary for the benefit of the queue runner, because there is no re-exec
2701 when deliver_drop_privilege is set.
bbe902f0 2702
ea3a6f44
NM
270337. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2704 was in use, was not putting the data itself into the right store pool;
2705 consequently, it could be overwritten for a subsequent message in the same
2706 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2707 the caching.)
bbe902f0 2708
ea3a6f44
NM
270938. Sometimes the final signoff response after QUIT could fail to get
2710 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2711 < 0 before doing a fflush(). This bug looks as though it goes back to the
2712 introduction of TLS in release 3.20, but "sometimes" must have been rare
2713 because the tests only now provoked it.
bbe902f0
PH
2714
2715
495ae4b0
PH
2716Exim version 4.43
2717-----------------
2718
2719 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2720 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2721 Now it returns an integer. A number of calls were still expecting a T/F
2722 return. Fortuitously, in all cases, the tests worked in OK situations,
2723 which is the norm. However, things would have gone wrong on any write
2724 failures on the smtp file descriptor. This function is used when sending
2725 messages over SMTP and also when doing verify callouts.
2726
2727 2. When Exim is called to do synchronous delivery of a locally submitted
2728 message (the -odf or -odi options), it no longer closes stderr before doing
2729 the delivery.
2730
2731 3. Implemented the mua_wrapper option.
2732
2733 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2734
2735 5. Implemented the functions header_remove(), header_testname(),
2736 header_add_at_position(), and receive_remove_recipient(), and exported them
2737 to local_scan().
2738
2739 6. If an ACL "warn" statement specified the addition of headers, Exim already
2740 inserted X-ACL-Warn: at the start if there was no header name. However, it
2741 was not making this test for the second and subsequent header lines if
2742 there were newlines in the string. This meant that an invalid header could
2743 be inserted if Exim was badly configured.
2744
2745 7. Allow an ACL "warn" statement to add header lines at the start or after all
2746 the Received: headers, as well as at the end.
2747
2748 8. Added the rcpt_4xx retry error code.
2749
2750 9. Added postmaster_mailfrom=xxx to callout verification option.
2751
275210. Added mailfrom=xxxx to the callout verification option, for verify=
2753 header_sender only.
2754
275511. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2756 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2757
275812. Inserted some casts to stop certain compilers warning when using pointer
2759 differences as field lengths or precisions in printf-type calls (mostly
2760 affecting debugging statements).
2761
276213. Added optional readline() support for -be (dynamically loaded).
2763
276414. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2765 same clock tick as a message's arrival, so that its received time was the
2766 same as the "first fail" time on the retry record, and that message
2767 remained on the queue past the ultimate address timeout, every queue runner
2768 would try a delivery (because it was past the ultimate address timeout) but
2769 after another failure, the ultimate address timeout, which should have then
2770 bounced the address, did not kick in. This was a "< instead of <=" error;
2771 in most cases the first failure would have been in the next clock tick
2772 after the received time, and all would be well.
2773
277415. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2775 being recognized when the domain list was tested by the match_domain
2776 condition in an expansion string.
2777
277816. Added the ${str2b64: operator.
2779
278017. Exim was always calling setrlimit() to set a large limit for the number of
2781 processes, without checking whether the existing limit was already
2782 adequate. (It did check for the limit on file descriptors.) Furthermore,
2783 errors from getrlimit() and setrlimit() were being ignored. Now they are
2784 logged to the main and panic logs, but Exim does carry on, to try to do its
2785 job under whatever limits there are.
2786
278718. Imported PCRE 5.0.
2788
278919. Trivial typo in log message " temporarily refused connection" (the leading
2790 space).
2791
279220. If the log selector return_path_on_delivery was set and an address was
2793 redirected to /dev/null, the delivery process crashed because it assumed
2794 that a return path would always be set for a "successful" delivery. In this
2795 case, the whole delivery is bypassed as an optimization, and therefore no
2796 return path is set.
2797
279821. Internal re-arrangement: the function for sending a challenge and reading
2799 a response while authentication was assuming a zero-terminated challenge
2800 string. It's now changed to take a pointer and a length, to allow for
2801 binary data in such strings.
2802
280322. Added the cyrus_sasl authenticator (code supplied by MBM).
2804
280523. Exim was not respecting finduser_retries when seeking the login of the
2806 uid under which it was called; it was always trying 10 times. (The default
2807 setting of finduser_retries is zero.) Also, it was sleeping after the final
2808 failure, which is pointless.
2809
281024. Implemented tls_on_connect_ports.
2811
281225. Implemented acl_smtp_predata.
2813
281426. If the domain in control=submission is set empty, Exim assumes that the
2815 authenticated id is a complete email address when it generates From: or
2816 Sender: header lines.
2817
281827. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2819 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2820 chown and chgrp in /bin and hostname in /usr/bin.
2821
282228. Exim was keeping the "process log" file open after each use, just as it
2823 does for the main log. This opens the possibility of it remaining open for
2824 long periods when the USR1 signal hits a daemon. Occasional processlog
2825 errors were reported, that could have been caused by this. Anyway, it seems
2826 much more sensible not to leave this file open at all, so that is what now
2827 happens.
2828
282929. The long-running daemon process does not normally write to the log once it
2830 has entered its main loop, and it closes the log before doing so. This is
2831 so that log files can straightforwardly be renamed and moved. However,
2832 there are a couple of unusual error situations where the daemon does write
2833 log entries, and I had neglected to close the log afterwards.
2834
283530. The text of an SMTP error response that was received during a remote
2836 delivery was being truncated at 512 bytes. This is too short for some of
2837 the long messages that one sometimes sees. I've increased the limit to
2838 1024.
2839
284031. It is now possible to make retry rules that apply only when a message has a
2841 specific sender, in particular, an empty sender.
2842
284332. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2844 it possible to be selective about when SMTP synchronization is enforced.
2845
284633. Added "control = caseful_local_part" and "control = "caselower_local_part".
2847
284832. Implemented hosts_connection_nolog.
2849
285033. Added an ACL for QUIT.
2851
285234. Setting "delay_warning=" to disable warnings was not working; it gave a
2853 syntax error.
2854
285535. Added mailbox_size and mailbox_filecount to appendfile.
2856
285736. Added control = no_multiline_responses to ACLs.
2858
285937. There was a bug in the logic of the code that waits for the clock to tick
2860 in the case where the clock went backwards by a substantial amount such
2861 that the microsecond fraction of "now" was more than the microsecond
2862 fraction of "then" (but the whole seconds number was less).
2863
286438. Added support for the libradius Radius client library this is found on
2865 FreeBSD (previously only the radiusclient library was supported).
2866
2867
2868Exim version 4.42
2869-----------------
2870
2871 1. When certain lookups returned multiple values in the form name=value, the
2872 quoting of the values was not always being done properly. Specifically:
2873 (a) If the value started with a double quote, but contained no whitespace,
2874 it was not quoted.
2875 (b) If the value contained whitespace other than a space character (i.e.
2876 tabs or newlines or carriage returns) it was not quoted.
2877 This fix has been applied to the mysql and pgsql lookups by writing a
2878 separate quoting function and calling it from the lookup code. The fix
2879 should probably also be applied to nisplus, ibase and oracle lookups, but
2880 since I cannot test any of those, I have not disturbed their existing code.
2881
2882 2. A hit in the callout cache for a specific address caused a log line with no
2883 reason for rejecting RCPT. Now it says "Previous (cached) callout
2884 verification failure".
2885
2886 3. There was an off-by-one bug in the queryprogram router. An over-long
2887 return line was truncated at 256 instead of 255 characters, thereby
2888 overflowing its buffer with the terminating zero. As well as fixing this, I
2889 have increased the buffer size to 1024 (and made a note to document this).
2890
2891 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2892 when Exim is waiting for an SMTP response from a remote server, Exim
2893 restarts its select() call on the socket, thereby resetting its timeout.
2894 This is not a problem when such interrupts are rare. Somebody set up a cron
2895 job to run exiwhat every 2 minutes, which is less than the normal select()
2896 timeout (5 or 10 minutes). This meant that the select() timeout never
2897 kicked in because it was always reset. I have fixed this by comparing the
2898 time when an interrupt arrives with the time at the start of the first call
2899 to select(). If more time than the timeout has elapsed, the interrupt is
2900 treated as a timeout.
2901
2902 5. Some internal re-factoring in preparation for the addition of Sieve
2903 extensions (by MH). In particular, the "personal" test is moved to a
2904 separate function, and given an option for scanning Cc: and Bcc: (which is
2905 not set for Exim filters).
2906
2907 6. When Exim created an email address using the login of the caller as the
2908 local part (e.g. when creating a From: or Sender: header line), it was not
2909 quoting the local part when it contained special characters such as @.
2910
2911 7. Installed new OpenBSD configuration files.
2912
2913 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2914 try to make them clearer.
2915
2916 9. Callout options, other than the timeout value, were being ignored when
2917 verifying sender addresses in header lines. For example, when using
2918
2919 verify = header_sender/callout=no_cache
2920
2921 the cache was (incorrectly) being used.
2922
292310. Added a missing instance of ${EXE} to the exim_install script; this affects
2924 only the Cygwin environment.
2925
292611. When return_path_on_delivery was set as a log selector, if different remote
2927 addresses in the same message used different return paths and parallel
2928 remote delivery occurred, the wrong values would sometimes be logged.
2929 (Whenever a remote delivery process finished, the return path value from
2930 the most recently started remote delivery process was logged.)
2931
293212. RFC 3848 specifies standard names for the "with" phrase in Received: header
2933 lines when AUTH and/or TLS are in use. This is the "received protocol"
2934 field. Exim used to use "asmtp" for authenticated SMTP, without any
2935 indication (in the protocol name) for TLS use. Now it follows the RFC and
2936 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2937 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2938 names appear in log lines as well as in Received: header lines.
2939
294013. Installed MH's patches for Sieve to add the "copy" and "vacation"
2941 extensions, and comparison tests, and to fix some bugs.
2942
294314. Changes to the "personal" filter test:
2944
2945 (1) The test was buggy in that it was just doing the equivalent of
2946 "contains" tests on header lines. For example, if a user's address was
2947 anne@some.where, the "personal" test would incorrectly be true for
2948
2949 To: susanne@some.where
2950
2951 This test is now done by extracting each address from the header in turn,
2952 and checking the entire address. Other tests that are part of "personal"
2953 are now done using regular expressions (for example, to check local parts
2954 of addresses in From: header lines).
2955
2956 (2) The list of non-personal local parts in From: addresses has been
2957 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2958 taken from the Sieve specification recommendations.
2959
2960 (3) If the message contains any header line starting with "List-" it is
2961 treated as non-personal.
2962
2963 (4) The test for "circular" in the Subject: header line has been removed
2964 because it now seems ill-conceived.
2965
296615. Minor typos in src/EDITME comments corrected.
2967
296816. Installed latest exipick from John Jetmore.
2969
297017. If headers_add on a router specified a text string that was too long for
2971 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2972 of string_sprintf() is now avoided.
2973
297418. $message_body_size was not set (it was always zero) when running the DATA
2975 ACL and the local_scan() function.
2976
297719. For the "mail" command in an Exim filter, no default was being set for
2978 the once_repeat time, causing a random time value to be used if "once" was
2979 specified. (If the value happened to be <= 0, no repeat happened.) The
2980 default is now 0s, meaning "never repeat". The "vacation" command was OK
2981 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2982 (I found it when inspecting the code).
2983
298420. There is now an overall timeout for performing a callout verification. It
2985 defaults to 4 times the callout timeout, which applies to individual SMTP
2986 commands during the callout. The overall timeout applies when there is more
2987 than one host that can be tried. The timeout is checked before trying the
2988 next host. This prevents very long delays if there are a large number of
2989 hosts and all are timing out (e.g. when the network connections are timing
2990 out). The value of the overall timeout can be changed by specifying an
2991 additional sub-option for "callout", called "maxwait". For example:
2992
2993 verify = sender/callout=5s,maxwait=20s
2994
299521. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2996 to the end before writing, but this should make it even safer).
2997
299822. Exim was forgetting that it had advertised PIPELINING for the second and
2999 subsequent messages on an SMTP connection. It was also not resetting its
3000 memory on STARTTLS and an internal HELO.
3001
300223. When Exim logs an SMTP synchronization error within a session, it now
3003 records whether PIPELINING has been advertised or not.
3004
300524. Added 3 instances of "(long int)" casts to time_t variables that were being
3006 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3007 rather than long int.
3008
300925. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3010
301126. Added the never_mail option to autoreply.
3012
3013
3014Exim version 4.41
3015-----------------
3016
3017 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3018 crash if the getsockname() call failed; this can happen if a connection is
3019 closed very soon after it is established. The problem was simply in the
3020 order in which certain operations were done, causing Exim to try to write
3021 to the SMTP stream before it had set up the file descriptor. The bug has
3022 been fixed by making things happen in the correct order.
3023
3024
3025Exim version 4.40
3026-----------------
3027
3028 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3029 before the connection was closed, thus losing the rejection response.
3030
3031 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3032 some early Solaris releases, but causes trouble in current releases where
3033 socklen_t is defined.
3034
3035 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3036 always exist.
3037
3038 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3039 configured.
3040
3041 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3042 that releasing the top of it at the end releases what was used for sub-
3043 expansions (unless the block got too big). However, discard this block if
3044 the first thing is a variable or header, so that we can use its block when
3045 it is dynamic (useful for very large $message_headers, for example).
3046
3047 6. Lookups now cache *every* query, not just the most recent. A new, separate
3048 store pool is used for this. It can be recovered when all lookup caches are
3049 flushed. Lookups now release memory at the end of their result strings.
3050 This has involved some general refactoring of the lookup sources.
3051
3052 7. Some code has been added to the store_xxx() functions to reduce the amount
3053 of flapping under certain conditions.
3054
3055 8. log_incoming_interface used to affect only the <= reception log lines. Now
3056 it causes the local interface and port to be added to several more SMTP log
3057 lines, for example "SMTP connection from", and rejection lines.
3058
3059 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3060
306110. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3062
306311. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3064 could be overwritten at the end of the current message (or the start of a
3065 new message if it was set in a HELO ACL). The value is now preserved for
3066 the duration of the SMTP connection.
3067
306812. If a transport had a headers_rewrite setting, and a matching header line
3069 contained an unqualified address, that address was qualified, even if it
3070 did not match any rewriting rules. The underlying bug was that the values
3071 of the flags that permit the existence of unqualified sender and recipient
3072 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3073 non-local messages, and by -bnq for local messages) were not being
3074 preserved with the message after it was received.
3075
307613. When Exim was logging an SMTP synchronization error, it could sometimes log
3077 "next input=" as part of the text comprising the host identity instead of
3078 the correct text. The code was using the same buffer for two different
3079 strings. However, depending on which order the printing function evaluated
3080 its arguments, the bug did not always show up. Under Linux, for example, my
3081 test suite worked just fine.
3082
308314. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3084 doesn't work with some older versions of Perl. It has been changed to "my",
3085 which in any case is probably the better facility to use.
3086
308715. A really picky compiler found some instances of statements for creating
3088 error messages that either had too many or two few arguments for the format
3089 string.
3090
309116. The size of the buffer for calls to the DNS resolver has been increased
3092 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3093 for addresses that have a lot of PTR records. This alleviates a problem; it
3094 does not fully solve it.
3095
309617. A dnsdb lookup for PTR records that receives more data than will fit in the
3097 buffer now truncates the list and logs the incident, which is the same
3098 action as happens when Exim is looking up a host name and its aliases.
3099 Previously in this situation something unpredictable would happen;
3100 sometimes it was "internal error: store_reset failed".
3101
310218. If a server dropped the connection unexpectedly when an Exim client was
3103 using GnuTLS and trying to read a response, the client delivery process
3104 crashed while trying to generate an error log message.
3105
310619. If a "warn" verb in an ACL added multiple headers to a message in a single
3107 string, for example:
3108
3109 warn message = H1: something\nH2: something
3110
3111 the text was added as a single header line from Exim's point of view
3112 though it ended up OK in the delivered message. However, searching for the
3113 second and subsequent header lines using $h_h2: did not work. This has been
3114 fixed. Similarly, if a system filter added multiple headers in this way,
3115 the routers could not see them.
3116
311720. Expanded the error message when iplsearch is called with an invalid key to
3118 suggest using net-iplsearch in a host list.
3119
312021. When running tests using -bh, any delays imposed by "delay" modifiers in
3121 ACLs are no longer actually imposed (and a message to that effect is
3122 output).
3123
312422. If a "gecos" field in a passwd entry contained escaped characters, in
3125 particular, if it contained a \" sequence, Exim got it wrong when building
3126 a From: or a Sender: header from that name. A second bug also caused
3127 incorrect handling when an unquoted " was present following a character
3128 that needed quoting.
3129
313023. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3131 was not being matched caselessly.
3132
313324. Arranged for all hyphens in the exim.8 source to be escaped with
3134 backslashes.
3135
313625. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3137 properly. Recipient callout cache records were still being keyed to include
3138 the sender, even when use_sender was set false. This led to far more
3139 callouts that were necessary. The sender is no longer included in the key
3140 when use_sender is false.
3141
314226. Added "control = submission" modifier to ACLs.
3143
314427. Added the ${base62d: operator to decode base 62 numbers.
3145
314628. dnsdb lookups can now access SRV records.
3147
314829. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3149 the configuration file.
3150
315130. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3152 (-v) mode. This makes the output for a verbose queue run more intelligible.
3153
315431. Added a use_postmaster feature to recipient callouts.
3155
315632. Added the $body_zerocount variable, containing the number of binary zero
3157 bytes in the message body.
3158
315933. The time of last modification of the "new" subdirectory is now used as the
3160 "mailbox time last read" when there is a quota error for a maildir
3161 delivery.
3162
316334. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3164
316535. Added +ignore_unknown as a special item in host lists.
3166
316736. Code for decoding IPv6 addresses in host lists is now included, even if
3168 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3169 address was recognized as an IP address, but was then not correctly decoded
3170 into binary, causing unexpected and incorrect effects when compared with
3171 another IP address.
3172
3173
3174Exim version 4.34
3175-----------------
3176
3177 1. Very minor rewording of debugging text in manualroute to say "list of
3178 hosts" instead of "hostlist".
3179
3180 2. If verify=header_syntax was set, and a header line with an unqualified
3181 address (no domain) and a large number of spaces between the end of the
3182 name and the colon was received, the reception process suffered a buffer
3183 overflow, and (when I tested it) crashed. This was caused by some obsolete
3184 code that should have been removed. The fix is to remove it!
3185
3186 3. When running in the test harness, delay a bit after writing a bounce
3187 message to get a bit more predictability in the log output.
3188
3189 4. Added a call to search_tidyup() just before forking a reception process. In
3190 theory, someone could use a lookup in the expansion of smtp_accept_max_
3191 per_host which, without the tidyup, could leave open a database connection.
3192
3193 5. Added the variables $recipient_data and $sender_data which get set from a
3194 lookup success in an ACL "recipients" or "senders" condition, or a router
3195 "senders" option, similar to $domain_data and $local_part_data.
3196
3197 6. Moved the writing of debug_print from before to after the "senders" test
3198 for routers.
3199
3200 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3201 problems for message scanning, either using a data ACL, or using
3202 local_scan() because the Received: header was not generated till after they
3203 were called (in order to set the time as the time of reception completion).
3204 I have revised the way this works. The header is now generated after the
3205 body is received, but before the ACL or local_scan() are called. After they
3206 are run, the timestamp in the header is updated.
3207
3208
3209Exim version 4.33
3210-----------------
3211
3212 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3213 before starting a queue runner without re-exec. This happened only when
3214 deliver_drop_privilege was set or when the Exim user was set to root. The
3215 effect of the bug was that timeouts during subsequent deliveries caused
3216 crashes instead of being properly handled. The handler is now left at its
3217 default (and expected) setting.
3218
3219 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3220 message, again when deliver_drop_privilege is set or Exim is run as root.
3221 The bug described in (1) was not present in this case, but the tidying up
3222 of the other signals was missing. I have made the two cases consistent.
3223
3224 3. The ignore_target_hosts setting on a manualroute router was being ignored
3225 for hosts that were looked up using the /MX notation.
3226
3227 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3228 in domain lists.
3229
3230 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3231 operated on the sender address. After changing the $sender_address to <>
3232 for the sender address verify, Exim was re-instated it as the original
3233 (before rewriting) address, but remembering that it had rewritten it, so it
3234 wasn't rewriting it again. This bug also had the effect of breaking the
3235 sender address verification caching when the sender address was rewritten.
3236
3237 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3238 This has been changed so that if the ip literal address matches
3239 ignore_target_hosts, the router declines.
3240
3241 7. Added expansion conditions match_domain, match_address, and match_local_
3242 part (NOT match_host).
3243
3244 8. The placeholder for the Received: header didn't have a length field set.
3245
3246 9. Added code to Exim itself and to exim_lock to test for a specific race
3247 condition that could lead to file corruption when using MBX delivery. The
3248 issue is with the lockfile that is created in /tmp. If this file is removed
3249 after a process has opened it but before that process has acquired a lock,
3250 there is the potential for a second process to recreate the file and also
3251 acquire a lock. This could lead to two Exim processes writing to the file
3252 at the same time. The added code performs the same test as UW imapd; it
3253 checks after acquiring the lock that its file descriptor still refers to
3254 the same named file.
3255
325610. The buffer for building added header lines was of fixed size, 8192 bytes.
3257 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3258 when Exim is built.
3259
326011. Added the smtp_active_hostname option. If used, this will typically be made
3261 to depend on the incoming interface address. Because $interface_address is
3262 not set up until the daemon has forked a reception process, error responses
3263 that can happen earlier (such as "too many connections") no longer contain
3264 a host name.
3265
326612. If an expansion in a condition on a "warn" statement fails because a lookup
3267 defers, the "warn" statement is abandoned, and the next ACL statement is
3268 processed. Previously this caused the whole ACL to be aborted.
3269
327013. Added the iplsearch lookup type.
3271
327214. Added ident_timeout as a log selector.
3273
327415. Added tls_certificate_verified as a log selector.
3275
327616. Added a global option tls_require_ciphers (compare the smtp transport
3277 option of the same name). This controls incoming TLS connections.
3278
327917. I finally figured out how to make tls_require_ciphers do a similar thing
3280 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3281 before starting the TLS session.
3282
328318. Tabs are now shown as \t in -bP output.
3284
328519. If the log selector return_path_on_delivery was set, Exim crashed when
3286 bouncing a message because it had too many Received: header lines.
3287
328820. If two routers both had headers_remove settings, and the first one included
3289 a superfluous trailing colon, the final name in the first list and the
3290 first name in the second list were incorrectly joined into one item (with a
3291 colon in the middle).
3292
3293
3294Exim version 4.32
3295-----------------
3296
3297 1. Added -C and -D options to the exinext utility, mainly to make it easier
3298 to include in the automated testing, but these could be helpful when
3299 multiple configurations are in use.
3300
3301 2. The exinext utility was not formatting the output nicely when there was
3302 an alternate port involved in the retry record key, nor when there was a
3303 message id as well (for retries that were specific to a specific message
3304 and a specific host). It was also confused by IPv6 addresses, because of
3305 the additional colons they contain. I have fixed the IPv4 problem, and
3306 patched it up to do a reasonable job for IPv6.
3307
3308 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3309 delivery, the log line now contains "pipelined" if PIPELINING was used.
3310
3311 4. An SMTP transport process used to panic and die if the bind() call to set
3312 an explicit outgoing interface failed. This has been changed; it is now
3313 treated in the same way as a connect() failure.
3314
3315 5. A reference to $sender_host_name in the part of a conditional expansion
3316 that was being skipped was still causing a DNS lookup. This no longer
3317 occurs.
3318
3319 6. The def: expansion condition was not recognizing references to header lines
3320 that used bh_ and bheader_.
3321
3322 7. Added the _cache feature to named lists.
3323
3324 8. The code for checking quota_filecount in the appendfile transport was
3325 allowing one more file than it should have been.
3326
3327 9. For compatibility with Sendmail, the command line option
3328
3329 -prval:sval
3330
3331 is equivalent to
3332
3333 -oMr rval -oMs sval
3334
3335 and sets the incoming protocol and host name (for trusted callers). The
3336 host name and its colon can be omitted when only the protocol is to be set.
3337 Note the Exim already has two private options, -pd and -ps, that refer to
3338 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3339 "s", but I don't think that's a major issue.
3340
334110. A number of refactoring changes to the code, none of which should affect
3342 Exim's behaviour:
3343
3344 (a) The number of logging options was getting close to filling up the
3345 32-bit word that was used as a bit map. I have split them into two classes:
3346 those that are passed in the argument to log_write(), and those that are
3347 only ever tested independently outside of that function. These are now in
3348 separate 32-bit words, so there is plenty of room for expansion again.
3349 There is no change in the user interface or the logging behaviour.
3350
3351 (b) When building, for example, log lines, the code previously used a
3352 macro that called string_cat() twice, in order to add two strings. This is
3353 not really sufficiently general. Furthermore, there was one instance where
3354 it was actually wrong because one of the argument was used twice, and in
3355 one call a function was used. (As it happened, calling the function twice
3356 did not affect the overall behaviour.) The macro has been replaced by a
3357 function that can join an arbitrary number of extra strings onto a growing
3358 string.
3359
3360 (c) The code for expansion conditions now uses a table and a binary chop
3361 instead of a serial search (which was left over from when there were very
3362 few conditions). Also, it now recognizes conditions like "pam" even when
3363 the relevant support is not compiled in: a suitably worded error message is
3364 given if an attempt is made to use such a condition.
3365
336611. Added ${time_interval:xxxxx}.
3367
336812. A bug was causing one of the ddress fields not to be passed back correctly
3369 from remote delivery subprocesses. The field in question was not being
3370 subsequently used, so this caused to problems in practice.
3371
337213. Added new log selectors queue_time and deliver_time.
3373
337414. Might have fixed a bug in maildirsizefile handling that threw up
3375 "unexpected character" debug warnings, and recalculated the data
3376 unnecessarily. In any case, I expanded the warning message to give more
3377 information.
3378
337915. Added the message "Restricted characters in address" to the statements in
3380 the default ACL that block characters like @ and % in local parts.
3381
338216. Change 71 for release 4.31 proved to be much less benign that I imagined.
3383 Three changes have been made:
3384
3385 (a) There was a serious bug; a negative response to MAIL caused the whole
3386 recipient domain to be cached as invalid, thereby blocking all messages
3387 to all local parts at the same domain, from all senders. This bug has
3388 been fixed. The domain is no longer cached after a negative response to
3389 MAIL if the sender used is not empty.
3390
3391 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3392 been restored.
3393
3394 (c) A new callout option, "use_sender" has been added for people who want
3395 the modified behaviour.
3396
3397
3398Exim version 4.31
3399-----------------
3400
3401 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3402 Larry Rosenman.
3403
3404 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3405 indeed breaks things for older releases.
3406
3407 3. Added additional logging to the case where there is a problem reading data
3408 from a filter that is running in a subprocess using a pipe, in order to
3409 try to track down a specific problem.
3410
3411 4. Testing facility fudge: when running in the test harness and attempting
3412 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3413 getting "No route to host". Convert this to a timeout.
3414
3415 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3416 warning.
3417
3418 6. Some OS don't have socklen_t but use size_t instead. This affects the
3419 fifth argument of getsockopt() amongst other things. This is now
3420 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3421 can be set for individual OS. I have set it for SunOS5, OSF1, and
3422 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3423 some earlier ones do not.
3424
3425 7. Change 4.30/15 was not doing the test caselessly.
3426
3427 8. The standard form for an IPv6 address literal was being rejected by address
3428 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3429 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3430 this, as well as the form without the "IPv6" on the front (but only when
3431 address literals are enabled, of course).
3432
3433 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3434
343510. Exim crashed if a message with an empty sender address specified by -f
3436 encountered a router with an errors_to setting. This could be provoked only
3437 by a command such as
3438
3439 exim -f "" ...
3440
3441 where an empty string was supplied; "<>" did not hit this bug.
3442
344311. Installed PCRE release 4.5.
3444
344512. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3446 remained set. It is now erased.
3447
344813. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3449 times from message ids (which are base 36 rather than the normal 62).
3450
345114. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3452 were being counted as actual protocol errors, and logged if the log
3453 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3454 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3455 and DATA following a set of rejected RCPTs do not count as protocol errors.
3456 In other words, Exim assumes they were pipelined, though this may not
3457 actually be the case. Of course, in all cases the client gets an
3458 appropriate error code.
3459
346015. If a lookup fails in an ACL condition, a message about the failure may
3461 be available; it is used if testing the ACL cannot continue, because most
3462 such messages specify what the cause of the deferral is. However, some
3463 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3464 that caused an old message to be retained and used if a later statement
3465 caused a defer, replacing the real cause of the deferral.
3466
346716. If an IP address had so many PTR records that the DNS lookup buffer
3468 was not large enough to hold them, Exim could crash while trying to process
3469 the truncated data. It now detects and logs this case.
3470
347117. Further to 4.21/58, another change has been made: if (and only if) the
3472 first line of a message (the first header line) ends with CRLF, a bare LF
3473 in a subsequent header line has a space inserted after it, so as not to
3474 terminate the header.
3475
347618. Refactoring: tidied an ugly bit of code in appendfile that copied data
3477 unnecessarily, used atoi() instead of strtol(), and didn't check the
3478 termination when getting file sizes from file names by regex.
3479
348019. Completely re-implemented the support for maildirsize files, in the light
3481 of a number of problems with the previous contributed implementation
3482 (4.30/29). In particular:
3483
3484 . If the quota is zero, the maildirsize file is maintained, but no quota is
3485 imposed.
3486
3487 . If the maildir directory does not exist, it is created before any attempt
3488 to write a maildirsize file.
3489
3490 . The quota value in the file is just a cache; if the quota is changed in
3491 the transport, the new value overrides.
3492
3493 . A regular expression is available for excluding directories from the
3494 count.
3495
349620. The autoreply transport checks the characters in options that define the
3497 message's headers; it allows continued headers, but it was checking with
3498 isspace() after an embedded newline instead of explicitly looking for a
3499 space or a tab.
3500
350121. If all the "regular" hosts to which an address was routed had passed their
3502 expiry times, and had not reached their retry times, the address was
3503 bounced, even if fallback hosts were defined. Now Exim should go on to try
3504 the fallback hosts.
3505
350622. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3507 equivalent code in the SMTP transport. Some hosts send humungous responses
3508 to HELO/EHLO, more than 1024 it seems.
3509
351023. Refactoring: code in filter.c used (void *) for "any old type" but this
3511 gives compiler warnings in some environments. I've now done it "properly",
3512 using a union.
3513
351424. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3515 (because of problems with the built-in one) was declared to return uschar *
3516 instead of char *, causing compiler failure.
3517
351825. Fixed a file descriptor leak when processing alias/forward files.
3519
352026. Fixed a minor format string issue in dbfn.c.
3521
352227. Typo in exim.c: ("dmbnz" for "dbmnz").
3523
352428. If a filter file refered to $h_xxx or $message_headers, and the headers
3525 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3526 become corrupted.
3527
352829. When a sender address is verified, it is cached, to save repeating the test
3529 when there is more than one recipient in a message. However, when the
3530 verification involves a callout, it is possible for different callout
3531 options to be set for different recipients. It is too complicated to keep
3532 track of this in the cache, so now Exim always runs a verification when a
3533 callout is required, relying on the callout cache for the optimization.
3534 The overhead is duplication of the address routing, but this should not be
3535 too great.
3536
353730. Fixed a bug in callout caching. If a RCPT command caused the sender address
3538 to be verified with callout=postmaster, and the main callout worked but the
3539 postmaster check failed, the verification correctly failed. However, if a
3540 subsequent RCPT command asked for sender verification *without* the
3541 postmaster check, incorrect caching caused this verification also to fail,
3542 incorrectly.
3543
354431. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3545 it was not caching the DNS options (qualify_single, search_parents) that
3546 were used when the lookup failed. A subsequent lookup with different
3547 options therefore always gave the same answer, though there were cases
3548 where it should not have. (Example: a "domains = !$mx_any" option on a
3549 dnslookup router: the "domains" option is always processed without any
3550 widening, but the router might have qualify_single set.) Now Exim uses the
3551 cached value only when the same options are set.
3552
355332. Added John Jetmore's "exipick" utility to the distribution.
3554
355533. GnuTLS: When an attempt to start a TLS session fails for any reason other
3556 than a timeout (e.g. a certificate is required, and is not provided), an
3557 Exim server now closes the connection immediately. Previously it waited for
3558 the client to close - but if the client is SSL, it seems that they each
3559 wait for each other, leading to a delay before one of them times out.
3560
356134: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3562 maintained 0.8.x compatibility because I don't think many are using it, and
3563 it is clearly obsolete.
3564
356535. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3566 transport.
3567
356836. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3569 client certificate was expired. A simple patch fixes this, though I don't
3570 understand the full logic of why the verify callback is called multiple
3571 times.
3572
357337. OpenSSL: a