Update version number; apply new patch from Sieve maintainer.
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
eb4c0de6 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.505 2007/04/19 13:19:06 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
11
b4ed4da0
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12Exim version 4.67
13-----------------
14
22ad45c9
MH
15MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
16 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
17 Jan Srzednicki.
18
b4ed4da0
PH
19PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
20 issue a MAIL command.
21
431b7361
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22PH/02 In an ACL statement such as
23
24 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
25
26 if a client was not listed at all, or was listed with a value other than
27 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
28 the condition was not true (as it should be), so access was not denied.
29 The bug was that the ! inversion was incorrectly passed on to the second
30 item. This has been fixed.
31
32PH/03 Added additional dnslists conditions == and =& which are different from
33 = and & when the dns lookup returns more than one IP address.
34
83da1223
PH
35PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
36 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
37
54fc8428
PH
38PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
39 FSYNC, which compiles an option called disable_fsync that allows for
40 bypassing fsync(). The documentation is heavily laced with warnings.
41
34c5e8dd
SC
42SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
43
bbe15da8
PH
44PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
45 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
46 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
47 including adding "make clean"; (3) Added -fPIC when compiling the test
48 dynamically loaded module, to get rid of a warning.
49
0e8a9471
MH
50MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
51 message fails, move_frozen_messages = true and ignore_bounce_errors_after
52 = 0s. The bug is otherwise harmless.
53
f0872424
PH
54PH/07 There was a bug in the dovecot authenticator such that the value of
55 $auth1 could be overwritten, and so not correctly preserved, after a
56 successful authentication. This usually meant that the value preserved by
57 the server_setid option was incorrect.
58
b01dd148
PH
59PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
60
6bf342e1
PH
61PH/09 Installed PCRE release 7.0.
62
273f34d0
PH
63PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
64 run for batched SMTP input. It is now run at the start of every message
65 in the batch. While fixing this I discovered that the process information
66 (output by running exiwhat) was not always getting set for -bs and -bS
67 input. This is fixed, and it now also says "batched" for BSMTP.
68
cf8b11a5
PH
69PH/11 Added control=no_pipelining.
70
41c7c167
PH
71PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
72 patch, slightly modified), and move the expansion of helo_data till after
73 the connection is made in the smtp transport (so it can use these
74 values).
75
9c57cbc0
PH
76PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
77
f3f065bb
PH
78PH/14 Added log_selector = +pid.
79
047bdd8c
PH
80PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
81
0ce9abe6
PH
82PH/16 Add ${if forany and ${if forall.
83
0e22dfd1
PH
84PH/17 Added dsn_from option to vary the From: line in DSNs.
85
4c590bd1
PH
86PH/18 Flush SMTP output before performing a callout, unless control =
87 no_callout_flush is set.
88
09945f1e
PH
89PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
90 was true (the default) a successful delivery failed to delete the retry
91 item, thus causing premature timeout of the address. The bug is now
92 fixed.
93
c51b8e75
PH
94PH/20 Added hosts_avoid_pipelining to the smtp transport.
95
e28326d8
PH
96PH/21 Long custom messages for fakedefer and fakereject are now split up
97 into multiline reponses in the same way that messages for "deny" and
98 other ACL rejections are.
99
75b1493f
PH
100PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
101 with slight modification.
102
7c5214ec
PH
103PH/23 Applied sieve patches from the maintainer "tracking the latest notify
104 draft, changing the syntax and factoring some duplicate code".
105
4311097e
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106PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
107 for deliveries of the second and subsequent messages over the same SMTP
108 connection.
109
29f89cad
PH
110PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
111 ${reduce, with only minor "tidies".
112
5e687460
SC
113SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
114
c3611384
PH
115PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
116 expansion side effects.
117
5a11a7b4
PH
118PH/27 When a message times out after an over-quota error from an Exim-imposed
119 quota, the bounce message says "mailbox is full". This message was not
120 being given when it was a system quota that was exceeded. It now should
121 be the same.
122
0e20aff9
MH
123MH/03 Made $recipients available in local_scan(). local_scan() already has
124 better access to the recipient list through recipients_list[], but
125 $recipients can be useful in postmaster-provided expansion strings.
126
ca86f471
PH
127PH/28 The $smtp_command and $smtp_command_argument variables were not correct
128 in the case of a MAIL command with additional options following the
129 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
130 were accidentally chopped off.
131
a14e5636
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132PH/29 SMTP synchronization checks are implemented when a command is read -
133 there is a check that no more input is waiting when there shouldn't be
134 any. However, for some commands, a delay in an ACL can mean that it is
135 some time before the response is written. In this time, more input might
136 arrive, invalidly. So now there are extra checks after an ACL has run for
137 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
138 pipelining has not been advertised.
139
ec95d1a6
PH
140PH/30 MH's patch to allow iscntrl() characters to be list separators.
141
42855d71
PH
142PH/31 Unlike :fail:, a custom message specified with :defer: was not being
143 returned in the SMTP response when smtp_return_error_details was false.
144 This has been fixed.
145
57c2c631
PH
146PH/32 Change the Dovecot authenticator to use read() and write() on the socket
147 instead of the C I/O that was originally supplied, because problems were
148 reported on Solaris.
149
58c01c94
PH
150PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
151 Exim which did not show up earlier: it was assuming that a call to
152 SSL_CTX_set_info_callback() might give an error value. In fact, there is
153 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
154 was a macro that became an assignment, so it seemed to work. This has
155 changed to a proper function call with a void return, hence the compile
156 error. Exim's code has been fixed.
157
dee5a20a
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158PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
159 cpus.
160
d2ee6114
PH
161PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
162
b2d5182b
PH
163PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
164
79749a79
PH
165PH/37 If a message is not accepted after it has had an id assigned (e.g.
166 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
167 "Completed" line in the log. When some messages of this type were
168 selected by exigrep, they were listed as "not completed". Others were
169 picked up by some special patterns. I have improved the selection
170 criteria to be more general.
79749a79 171
c456d9bb
PH
172PH/38 The host_find_failed option in the manualroute router can now be set
173 to "ignore", to completely ignore a host whose IP address cannot be
174 found. If all hosts are ignored, the behaviour is controlled by the new
175 host_all_ignored option.
176
cd9868ec
PH
177PH/39 In a list of hosts for manualroute, if one item (either because of multi-
178 homing or because of multiple MX records with /mx) generated more than
179 one IP address, and the following item turned out to be the local host,
180 all the secondary addresses of the first item were incorrectly removed
181 from the list, along with the local host and any following hosts (which
182 is what is supposed to happen).
183
ebeaf996
PH
184PH/40 When Exim receives a message, it writes the login name, uid, and gid of
185 whoever called Exim into the -H file. In the case of the daemon it was
186 behaving confusingly. When first started, it used values for whoever
187 started the daemon, but after a SIGHUP it used the Exim user (because it
188 calls itself on a restart). I have changed the code so that it now always
189 uses the Exim user.
190
2679d413
PH
191PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
192 message are rejected with the same error (e.g. no authentication or bad
193 sender address), and a DATA command is nevertheless sent (as can happen
194 with PIPELINING or a stupid MUA), the error message that was given to the
195 RCPT commands is included in the rejection of the DATA command. This is
196 intended to be helpful for MUAs that show only the final error to their
197 users.
198
84024b72
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199PH/42 Another patch from the Sieve maintainer.
200
8005d38e
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201SC/02 Eximstats - Differentiate between permanent and temporary rejects.
202 Eximstats - Fixed some broken HTML links and added missing column headers
203 (Jez Hancock).
204 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
205 columns for Rejects, Temp Rejects, Ham, and Spam rows.
206
3298c6c6
SC
207SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
208
a43a27c5
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209PH/43 Yet another patch from the Sieve maintainer.
210
58eb016e 211PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
212 the response to the final '.' that terminates a message, but only in the
213 case where the client has not sent further data following the '.'
214 (unfortunately, this is allowed). However, in many cases there won't be
215 any further data because there won't be any more messages to send. A call
216 to select() can be used: if it shows that the input is "ready", there is
217 either input waiting, or the socket has been closed. An attempt to read
218 the next input character can distinguish the two cases. Previously, Exim
58eb016e 219 would have sent an OK response which the client would never have see.
563b63fa
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220 This could lead to message repetition. This fix should cure that, at
221 least in a lot of common cases.
58eb016e 222
b43a74ea
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223PH/45 Do not advertise STARTTLS in response to HELP unless it would be
224 advertised in response to EHLO.
225
b4ed4da0 226
5dd1517f
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227Exim version 4.66
228-----------------
229
230PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
231 fixed by 4.65/MH/01 (is this a record?) are fixed:
232
233 (i) An empty string was always treated as zero by the numeric comparison
234 operators. This behaviour has been restored.
235
236 (ii) It is documented that the numeric comparison operators always treat
237 their arguments as decimal numbers. This was broken in that numbers
238 starting with 0 were being interpreted as octal.
239
240 While fixing these problems I realized that there was another issue that
241 hadn't been noticed. Values of message_size_limit (both the global option
242 and the transport option) were treated as octal if they started with 0.
243 The documentation was vague. These values are now always treated as
244 decimal, and I will make that clear in the documentation.
245
246
93cfa765
TK
247Exim version 4.65
248-----------------
249
250TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
251 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
252 versions. (#438)
253
d6066548
MH
254MH/01 Don't check that the operands of numeric comparison operators are
255 integers when their expansion is in "skipping" mode (fixes bug
256 introduced by 4.64-PH/07).
257
4362ff0d
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258PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
259 child addresses, Exim now panics and dies. Previously, because the count
260 is held in a short int, deliveries were likely to be lost. As such a
261 large number of recipients for a single message is ridiculous
262 (performance will be very, very poor), I have chosen to impose a limit
263 rather than extend the field.
264
93cfa765 265
944e9e9c
TF
266Exim version 4.64
267-----------------
aa41d2de 268
21d74bd9
TK
269TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
270 leftover -K file (the existence of which was triggered by #402).
271 While we were at it, introduced process PID as part of the -K
272 filename. This should rule out race conditions when creating
273 these files.
274
275TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
276 processing considerably. Previous code took too long for large mails,
277 triggering a timeout which in turn triggers #401.
278
279TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
280 in the DK code in transports.c. sendfile() is not really portable,
281 hence the _LINUX specificness.
944e9e9c
TF
282
283TF/01 In the add_headers option to the mail command in an Exim filter,
284 there was a bug that Exim would claim a syntax error in any
285 header after the first one which had an odd number of characters
286 in the field name.
287
2b1c6e3a
PH
288PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
289 callout verification, Exim cached a "reject" for the entire domain. This
290 is correct for most verifications, but it is not correct for a recipient
291 verification with use_sender or use_postmaster set, because in that case
292 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
293 case of MAIL FROM:<> rejection from other early rejections (e.g.
294 rejection of HELO). When verifying a recipient using a non-null MAIL
295 address, the cache is ignored if it shows MAIL FROM:<> rejection.
296 Whatever the result of the callout, the value of the domain cache is
297 left unchanged (for any other kind of callout, getting as far as trying
298 RCPT means that the domain itself is ok).
299
1f872c80
PH
300PH/02 Tidied a number of unused variable and signed/unsigned warnings that
301 gcc 4.1.1 threw up.
302
303PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
304 manifest itself as EPIPE rather than ECONNECT. When tidying away a
305 session, the daemon ignores ECONNECT errors and logs others; it now
306 ignores EPIPE as well.
307
d203e649
PH
308PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
309 (quoted-printable decoding).
310
cc2ed8f7 311PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 312 later the small subsequent patch to fix an introduced bug.
f951fd57 313
ddfcd446
PH
314PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
315
d45b1de8
PH
316PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
317
318PH/08 An error is now given if message_size_limit is specified negative.
319
38a0a95f 320PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 321 to be given (somewhat) arbitrary names.
38a0a95f 322
a2405d83
JJ
323JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
324 in 4.64-PH/09.
325
326JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
327 miscellaneous code fixes
328
6ea85e9a
PH
329PH/10 Added the log_reject_target ACL modifier to specify where to log
330 rejections.
331
26da7e20
PH
332PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
333 hostname. This is wrong, because it relates to the incoming message (and
334 probably the interface on which it is arriving) and not to the outgoing
335 callout (which could be using a different interface). This has been
336 changed to use the value of the helo_data option from the smtp transport
337 instead - this is what is used when a message is actually being sent. If
338 there is no remote transport (possible with a router that sets up host
339 addresses), $smtp_active_hostname is used.
6ea85e9a 340
14aa5a05 341PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 342 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
343 (a) The code assumed that strncpy() returns a negative number on buffer
344 overflow, which isn't the case. Replaced with Exim's string_format()
345 function.
346 (b) There were several signed/unsigned issues. I just did the minimum
347 hacking in of casts. There is scope for a larger refactoring.
348 (c) The code used strcasecmp() which is not a standard C function.
349 Replaced with Exim's strcmpic() function.
350 (d) The code set only $1; it now sets $auth1 as well.
351 (e) A simple test gave the error "authentication client didn't specify
352 service in request". It would seem that Dovecot has changed its
353 interface. Fortunately there's a specification; I followed it and
354 changed what the client sends and it appears to be working now.
355
ff75a1f7
PH
356PH/13 Added $message_headers_raw to provide the headers without RFC 2047
357 decoding.
358
e6f6568e
PH
359PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
360 address A is aliased to B and C, where B exists and C does not. Without
361 -v the output is "A verified" because verification stops after a
362 successful redirection if more than one address is generated. However,
363 with -v the child addresses are also verified. Exim was outputting "A
364 failed to verify" and then showing the successful verification for C,
365 with its parentage. It now outputs "B failed to verify", showing B's
366 parentage before showing the successful verification of C.
367
d6f6e0dc
PH
368PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
369 look up a TXT record in a specific list after matching in a combined
370 list.
371
322050c2
PH
372PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
373 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
374 they consult the DNS. I had assumed they would set it the way they
375 wanted; and indeed my experiments on Linux seem to show that in some
376 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
377 To be on the safe side, however, I have now made the interface to
378 host_find_byname() similar to host_find_bydns(), with an argument
379 containing the DNS resolver options. The host_find_byname() function now
380 sets these options at its start, just as host_find_bydns() does. The smtp
381 transport options dns_qualify_single and dns_search_parents are passed to
382 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
383 of host_find_byname() use the default settings of RES_DEFNAMES
384 (qualify_single) but not RES_DNSRCH (search_parents).
385
08955dd3
PH
386PH/17 Applied (a modified version of) Nico Erfurth's patch to make
387 spool_read_header() do less string testing, by means of a preliminary
388 switch on the second character of optional "-foo" lines. (This is
389 overdue, caused by the large number of possibilities that now exist.
390 Originally there were few.) While I was there, I also converted the
391 str(n)cmp tests so they don't re-test the leading "-" and the first
392 character, in the hope this might squeeze out yet more improvement.
393
1eccaa59
PH
394PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
395 flag allowing group syntax was set by the header_syntax check but not
396 turned off, possible causing trouble later; (2) The flag was not being
397 set at all for the header_verify test, causing "group"-style headers to
398 be rejected. I have now set it in this case, and also caused header_
399 verify to ignore an empty address taken from a group. While doing this, I
400 came across some other cases where the code for allowing group syntax
401 while scanning a header line wasn't quite right (mostly, not resetting
402 the flag correctly in the right place). These bugs could have caused
403 trouble for malformed header lines. I hope it is now all correct.
404
602e59e5
PH
405PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
406 with the "reply" argument non-NULL. The code, however (which originally
407 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
408 but it didn't always do it. This confused somebody who was copying the
409 code for some other use. I have removed all the tests.
410
411ef850
PH
411PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
412 feature that was used to support insecure browsers during the U.S. crypto
413 embargo. It requires special client support, and Exim is probably the
414 only MTA that supported it -- and would never use it because real RSA is
415 always available. This code has been removed, because it had the bad
416 effect of slowing Exim down by computing (never used) parameters for the
417 RSA_EXPORT functionality.
418
7befa435
PH
419PH/21 On the advice of Timo Sirainen, added a check to the dovecot
420 authenticator to fail if there's a tab character in the incoming data
421 (there should never be unless someone is messing about, as it's supposed
422 to be base64-encoded). Also added, on Timo's advice, the "secured" option
423 if the connection is using TLS or if the remote IP is the same as the
424 local IP, and the "valid-client-cert option" if a client certificate has
425 been verified.
426
48da4259 427PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
428 authenticators. This can be used for authorization after authentication
429 succeeds. (In the case of plaintext, it servers for both authentication
430 and authorization.)
431
48da4259
PH
432PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
433 if any retry times were supplied.
434
d1d5595c
PH
435PH/24 Exim crashed if verify=helo was activated during an incoming -bs
436 connection, where there is no client IP address to check. In this
437 situation, the verify now always succeeds.
438
0ef732d9
PH
439PH/25 Applied John Jetmore's -Mset patch.
440
328895cc
PH
441PH/26 Added -bem to be like -Mset, but loading a message from a file.
442
fd700877
PH
443PH/27 In a string expansion for a processed (not raw) header when multiple
444 headers of the same name were present, leading whitespace was being
445 removed from all of them, but trailing whitespace was being removed only
446 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
447 before concatenation. Completely empty headers in a concatenation (as
448 before) are ignored.
fd700877 449
8dce1a6f
PH
450PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
451 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
452
17af4a17
PH
453PH/29 [Removed. This was a change that I later backed out, and forgot to
454 correct the ChangeLog entry (that I had efficiently created) before
455 committing the later change.]
f6c332bd
PH
456
457PH/30 Exim was sometimes attempting to deliver messages that had suffered
458 address errors (4xx response to RCPT) over the same connection as other
459 messages routed to the same hosts. Such deliveries are always "forced",
460 so retry times are not inspected. This resulted in far too many retries
461 for the affected addresses. The effect occurred only when there were more
462 hosts than the hosts_max_try setting in the smtp transport when it had
463 the 4xx errors. Those hosts that it had tried were not added to the list
464 of hosts for which the message was waiting, so if all were tried, there
465 was no problem. Two fixes have been applied:
466
467 (i) If there are any address or message errors in an SMTP delivery, none
468 of the hosts (tried or untried) are now added to the list of hosts
469 for which the message is waiting, so the message should not be a
470 candidate for sending over the same connection that was used for a
471 successful delivery of some other message. This seems entirely
472 reasonable: after all the message is NOT "waiting for some host".
473 This is so "obvious" that I'm not sure why it wasn't done
474 previously. Hope I haven't missed anything, but it can't do any
475 harm, as the worst effect is to miss an optimization.
476
477 (ii) If, despite (i), such a delivery is accidentally attempted, the
478 routing retry time is respected, so at least it doesn't keep
479 hammering the server.
480
c1114884
PH
481PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
482 in ${readsocket because some servers need this prod.
483
7a0743eb
PH
484PH/32 Added some extra debug output when updating a wait-xxx database.
485
0d85fa3f
PH
486PH/33 The hint "could be header name not terminated by colon", which has been
487 given for certain expansion errors for a long time, was not being given
488 for the ${if def:h_colon_omitted{... case.
489
1bf43b78
PH
490PH/34 The spec says: "With one important exception, whenever a domain list is
491 being scanned, $domain contains the subject domain." There was at least
492 one case where this was not true.
493
520de300
PH
494PH/35 The error "getsockname() failed: connection reset by peer" was being
495 written to the panic log as well as the main log, but it isn't really
496 panic-worthy as it just means the connection died rather early on. I have
497 removed the panic log writing for the ECONNRESET error when getsockname()
498 fails.
499
48c7f9e2
PH
500PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
501 runs only) independently of the message's sender address. This meant
502 that, if the 4xx error was in fact related to the sender, a different
503 message to the same recipient with a different sender could confuse
504 things. In particualar, this can happen when sending to a greylisting
505 server, but other circumstances could also provoke similar problems.
506 I have changed the default so that the retry time for these errors is now
507 based a combination of the sender and recipient addresses. This change
508 can be overridden by setting address_retry_include_sender=false in the
509 smtp transport.
510
99ea1c86
PH
511PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
512 remote server are returned as part of bounce messages. This was not
513 happening for LMTP over a pipe (the lmtp transport), but now it is the
514 same for both kinds of LMTP.
515
a2042e78
PH
516PH/38 Despite being documented as not happening, Exim was rewriting addresses
517 in header lines that were in fact CNAMEs. This is no longer the case.
518
4fbcfc2e
PH
519PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
520 and queue runs started by the daemon processed all messages. This has
521 been fixed so that -R and -S can now usefully be given with -q<time>.
522
aa41d2de
PH
523PH/40 Import PCRE release 6.7 (fixes some bugs).
524
af561417
PH
525PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
526
3cc66b45
PH
527PH/42 Give an error if -q is specified more than once.
528
194cc0e4
PH
529PH/43 Renamed the variables $interface_address and $interface_port as
530 $received_ip_address and $received_port, to make it clear that these
531 values apply to message reception, and not to the outgoing interface when
532 a message is delivered. (The old names remain recognized, of course.)
533
a401ddaa
PH
534PH/44 There was no timeout on the connect() call when using a Unix domain
535 socket in the ${readsocket expansion. There now is.
536
4e88a19f
PH
537PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
538 be meaningful with "accept".
539
d7d7b289
SC
540SC/01 Eximstats V1.43
541 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
542
543SC/02 Eximstats V1.44
544 Use a glob alias rather than an array ref in the generated
545 parser. This improves both readability and performance.
546
547SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
548 Collect SpamAssassin and rejection statistics.
549 Don't display local sender or destination tables unless
550 there is data to show.
551 Added average volumes into the top table text output.
552
553SC/04 Eximstats V1.46
554 Collect data on the number of addresses (recipients)
555 as well as the number of messages.
556
557SC/05 Eximstats V1.47
558 Added 'Message too big' to the list of mail rejection
559 reasons (thanks to Marco Gaiarin).
560
561SC/06 Eximstats V1.48
562 Mainlog lines which have GMT offsets and are too short to
563 have a flag are now skipped.
564
565SC/07 Eximstats V1.49 (Alain Williams)
566 Added the -emptyok flag.
567
568SC/08 Eximstats V1.50
569 Fixes for obtaining the IP address from reject messages.
570
0ea2a468
JJ
571JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
572 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
573 whitesspace changes from 4.64-PH/27
574
575JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
576 match 4.64-PH/13
577
578JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
579 are found, allow negative numbers in numeric criteria)
580
581JJ/06 exipick.20061117.2, added new $message_body_missing variable
582
583JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
584 to match changes made in 4.64-PH/43
585
8a10f5a4
PH
586PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
587
30e18802
PH
588PH/47 Put in an explicit test for a DNS lookup of an address record where the
589 "domain" is actually an IP address, and force a failure. This locks out
590 those revolvers/nameservers that support "A-for-A" lookups, in
591 contravention of the specifications.
592
55728a4f
PH
593PH/48 When a host name was looked up from an IP address, and the subsequent
594 forward lookup of the name timed out, the host name was left in
595 $sender_host_name, contrary to the specification.
d7d7b289 596
d7837193
PH
597PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
598 restricted to single-key lookups, Exim was not diagnosing an error if
599 * or *@ was used with a query-style lookup.
600
87054a31
PH
601PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
602
ea2c01d2
MH
603MH/01 local_scan ABI version incremented to 1.1. It should have been updated
604 long ago, but noone interested enough thought of it. Let's just say that
605 the "1.1" means that there are some new functions that weren't there at
606 some point in the past.
607
e4fa6968
PH
608PH/51 Error processing for expansion failure of helo_data from an smtp
609 transport during callout processing was broken.
610
56f5d9bd
PH
611PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
612 tested/used via the -bh/-bhc/-bs options.
613
922e1c28
PH
614PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
615 bug, fixed in subsequent PCRE releases).
616
21eb6e72
PH
617PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
618 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
619
a0540757
PH
620PH/55 Check for a ridiculously long file name in exim_dbmbuild.
621
944e9e9c 622
478be7b0
SC
623Exim version 4.63
624-----------------
625
626SC/01 Use a glob alias rather than an array ref in eximstats generated
627 parser. This improves both readability and performance.
628
629SC/02 Collect SpamAssassin and rejection statistics in eximstats.
630 Don't display local sender or destination tables in eximstats unless
631 there is data to show.
632 Added average volumes into the eximstats top table text output.
633
634SC/03 Collect data on the number of addresses (recipients) as well
635 as the number of messages in eximstats.
636
2b965a65
TF
637TF/01 Correct an error in the documentation for the redirect router. Exim
638 does (usually) call initgroups() when daemonizing.
478be7b0 639
45b91596
PH
640TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
641 with consistent privilege compared to when running as a daemon.
478be7b0 642
c59f5781
TF
643TF/03 Note in the spec that $authenticated_id is not set for local
644 submissions from trusted users.
645
90fc3069
TF
646TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
647 Thanks to Dean Brooks <dean@iglou.com> for the patch.
648
6083aca0
TF
649TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
650 by adding some example configuration directives to the default
651 configuration file. A little bit of work is required to uncomment the
652 directives and define how usernames and passwords are checked, but
653 there is now a framework to start from.
654
765b530f
PH
655PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
656 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
657 without this. I don't know how relevant this is to other LDAP libraries.
658
4e167a8c
PH
659PH/02 Add the verb name to the "unknown ACL verb" error.
660
4608d683
PH
661PH/03 Magnus Holmgren's patch for filter_prepend_home.
662
b8dc3e4a
PH
663PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
664
5418e93b
PH
665PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
666 directory not expanded when it should be if an expanded home directory
667 was set for the address (which is overridden by the transport).
668
b4a9bda2
PH
669PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
670 libradius.
671
45b91596
PH
672PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
673 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
674 because it is too late at that time, and has no effect.
675
5547e2c5
PH
676PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
677 security issue with \' (bugzilla #107). I could not use the
678 PQescapeStringConn() function, because it needs a PGconn value as one of
679 its arguments.
680
dbcef0ea
PH
681PH/08 When testing addresses using -bt, indicate those final addresses that
682 are duplicates that would not cause an additional delivery. At least one
683 person was confused, thinking that -bt output corresponded to deliveries.
684 (Suppressing duplicates isn't a good idea as you lose the information
685 about possibly different redirections that led to the duplicates.)
686
25257489
PH
687PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
688 systems where poll() doesn't work, in particular OS X.
689
c816d124
PH
690PH/10 Added more information to debugging output for retry time not reached.
691
a9ccd69a
PH
692PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
693 operations in malware.c.
694
75fa1910
PH
695PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
696 signatures.
697
a7d7aa58
PH
698PH/13 If write_rejectlog was set false when logging was sent to syslog with
699 syslog_duplication set false, log lines that would normally be written
700 both the the main log and to the reject log were not written to syslog at
701 all.
702
42119b09
PH
703PH/14 In the default configuration, change the use of "message" in ACL warn
704 statements to "add_header".
705
41609df5
PH
706PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
707 not followed by a command (e.g. "seen endif").
708
a5bd321b
PH
709PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
710 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
711 latter.
712
e85a7ad5 713PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
714 so that it is now:
715
e85a7ad5
PH
716 ${if or { \
717 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
718 { match{$h_precedence:}{(?i)bulk|list|junk} } \
719 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
720 }{no}{yes}}
721
e85a7ad5
PH
722 The Auto-Submitted: and various List- headers are standardised, whereas I
723 don't think Precedence: ever was.
5dff5817 724
d8fe1c03
PH
725PH/18 Refactored debugging code in route_finduser() to show more information,
726 in particular, the error code if getpwnam() issues one.
727
16282d2b
PH
728PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
729 This is apparently needed in addition to the PH/07 change above to avoid
730 any possible encoding problems.
731
35d40a98
PH
732PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
733 but not after initializing Perl.
734
034d99ab
PH
735PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
736 output them only if debugging. By default they are written stderr,
737 apparently, which is not desirable.
738
6ec97b1b
PH
739PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
740 queries.
741
e22ca4ac
JJ
742JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
743 --not options
744
745JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
746
33d73e3b
PH
747PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
748 authenticated or an ident call has been made. Suppress the default
749 values for $authenticated_id and $authenticated_sender (but permit -oMai
750 and -oMas) when testing with -bh.
751
9ecb03f3
PH
752PH/24 Re-jigged the order of the tests in the default configuration so that the
753 tests for valid domains and recipients precede the DNS black list and CSA
754 tests, on the grounds that those ones are more expensive.
755
084efe8d
PH
756PH/25 Exim was not testing for a space following SMTP commands such as EHLO
757 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
758 This bug exists in every version of Exim that I still have, right back to
759 0.12.
760
366fc9f0
PH
761PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
762 However, an attempt to turn on case-sensitivity in a regex key by
763 including (?-i) didn't work because the subject string was already
764 lowercased, and the effects were non-intuitive. It turns out that a
765 one-line patch can be used to allow (?-i) to work as expected.
766
c59f5781 767
c887c79e
TF
768Exim version 4.62
769-----------------
770
771TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
772 other effects) broke the use of negated acl sub-conditions.
773
1cce3af8
PH
774PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
775 patch).
776
afb3eaaf
PH
777PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
778 "Deny" causes Exim to reject the incoming connection with a 554 error.
779 Unfortunately, if there is a major crisis, such as a disk failure,
780 tcp-wrappers gives "deny", whereas what one would like would be some
781 kind of temporary error. A kludge has been added to help with this.
782 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
783 554 error is used if errno is still zero or contains ENOENT (which occurs
784 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
785 451 error is used.
786
e173618b
PH
787PH/03 Add -lutil to the default FreeBSD LIBS setting.
788
dd16e114
PH
789PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
790 errors. Otherwise a message that provokes a temporary error (when other
791 messages do not) can cause a whole host to time out.
792
f7fd3850
PH
793PH/05 Batch deliveries by appendfile and pipe transports did not work when the
794 addresses were routed directly to files or pipes from a redirect router.
795 File deliveries just didn't batch; pipe deliveries might have suffered
796 odd errors.
797
d87df92c
PH
798PH/06 A failure to get a lock for a hints database would erroneously always say
799 "Failed to get write lock", even when it was really a read lock.
800
7e9f683d
PH
801PH/07 The appendfile transport was creating MBX lock files with a fixed mode
802 of 0600. This has been changed to use the value of the lockfile_mode
803 option (which defaults to 0600).
804
bfad5236
PH
805PH/08 Applied small patch from the Sieve maintainer.
806
01c490df
PH
807PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
808 folder from quota calculations, a direct delivery into this folder messed
809 up the contents of the maildirsize file. This was because the regex was
810 used only to exclude .Trash (or whatever) when the size of the mailbox
811 was calculated. There was no check that a delivery was happening into an
812 excluded directory. This bug has been fixed by ignoring all quota
813 processing for deliveries into excluded directories.
814
d6629cdc
PH
815PH/10 Added the maildirfolder_create_regex option to appendfile.
816
1cce3af8 817
214e2000
PH
818Exim version 4.61
819-----------------
820
821PH/01 The code for finding all the local interface addresses on a FreeBSD
822 system running IPv6 was broken. This may well have applied to all BSD
823 systems, as well as to others that have similar system calls. The broken
824 code found IPv4 interfaces correctly, but gave incorrect values for the
825 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
826 that it would not match correctly against @[] and not recognize the IPv6
827 addresses as local.
828
f9daeae0
PH
829PH/02 The ipliteral router was not recognizing addresses of the form user@
830 [ipv6:....] because it didn't know about the "ipv6:" prefix.
831
7e66e54d
PH
832PH/03 Added disable_ipv6.
833
c8ea1597
PH
834PH/04 Changed $reply_address to use the raw form of the headers instead of the
835 decoded form, because it is most often used to construct To: headers
836 lines in autoreplies, and the decoded form may well be syntactically
837 invalid. However, $reply_address has leading white space removed, and all
838 newlines turned into spaces so that the autoreply transport does not
839 grumble.
840
911f6fde
PH
841PH/05 If group was specified without a user on a router, and no group or user
842 was specified on a transport, the group from the router was ignored.
843
47ca6d6c
PH
844PH/06 Increased the number of ACL variables to 20 of each type, and arranged
845 for visible compile-time settings that can be used to change these
846 numbers, for those that want even more. Backwards compatibility with old
847 spool files has been maintained. However, going back to a previous Exim
848 release will lost any variables that are in spool files.
849
ed0e9820
PH
850PH/07 Two small changes when running in the test harness: increase delay when
851 passing a TCP/IP connection to a new process, in case the original
852 process has to generate a bounce, and remove special handling of
853 127.0.0.2 (sic), which is no longer necessary.
854
eff37e47
PH
855PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
856 be the same on different OS.
857
1921d2ea
PH
858PH/09 Moved a debug statement in filter processing to avoid a race problem when
859 testing.
860
b3f69ca8
JJ
861JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
862 whether --show-vars was specified or not
863
864JJ/02 exipick: Added support for new ACL variable spool format introduced
865 in 4.61-PH/06
866
424a1c63
PH
867PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
868 syntactically invalid From: or Reply-to: line, and a filter used this to
869 generate an autoreply, and therefore failed to obtain an address for the
870 autoreply, Exim could try to deliver to a non-existent relative file
871 name, causing unrelated and misleading errors. What now happens is that
872 it logs this as a hard delivery error, but does not attempt to create a
873 bounce message.
874
7a100415
PH
875PH/11 The exinext utility has a -C option for testing purposes, but although
876 the given file was scanned by exinext itself; it wasn't being passed on
877 when Exim was called.
878
19b9dc85
PH
879PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
880 an end-of-file indication when reading a command response.
881
309bd837
PH
882PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
883 compiled. In many other places in Exim, IPv6 addresses are always
884 recognized, so I have changed this. It also means that IPv4 domain
885 literals of the form [IPV4:n.n.n.n] are now always recognized.
886
59e82a2a
PH
887PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
888 used if the router is not running as root, for example, when verifying at
889 ACL time, or when using -bh. The debugging output from this situation was
890 non-existent - all you got was a failure to exec. I have made two
891 changes:
892
893 (a) Failures to set uid/gid, the current directory, or a process leader
894 in a subprocess such as that created by queryprogram now generate
895 suitable debugging ouput when -d is set.
896
897 (b) The queryprogram router detects when it is not running as root,
898 outputs suitable debugging information if -d is set, and then runs
899 the subprocess without attempting to change uid/gid.
900
9edc04ce
PH
901PH/15 Minor change to Makefile for building test_host (undocumented testing
902 feature).
903
1349e1e5
PH
904PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
905 additional section of a DNS packet that returns MX or SRV records.
906 Instead, it always explicitly searches for A/AAAA records. This avoids
907 major problems that occur when a DNS server includes only records of one
908 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
909 fixed another bug: if SRV records were looked up and the corresponding
910 address records were *not* found in the additional section, the port
911 values from the SRV records were lost.
912
ea49d0e1
PH
913PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
914 using the correct key (the original address) when searching the retry
915 rules in order to find which one to use for generating the retry hint.
916
064a94c9
PH
917PH/18 If quota_warn_message contains a From: header, Exim now refrains from
918 adding the default one. Similarly, if it contains a Reply-To: header, the
919 errors_reply_to option, if set, is not used.
920
727071f8
PH
921PH/19 When calculating a retry time, Exim used to measure the "time since
922 failure" by looking at the "first failed" field in the retry record. Now
923 it does not use this if it is later than than the arrival time of the
924 message. Instead it uses the arrival time. This makes for better
925 behaviour in cases where some deliveries succeed, thus re-setting the
926 "first failed" field. An example is a quota failure for a huge message
927 when small messages continue to be delivered. Without this change, the
928 "time since failure" will always be short, possible causing more frequent
929 delivery attempts for the huge message than are intended.
dd16e114 930 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 931
f78eb7c6
PH
932PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
933 $1, $2, $3) because the numerical variables can be reset during some
934 expansion items (e.g. "match"), thereby losing the authentication data.
935
21c28500
PH
936PH/21 Make -bV show the size of off_t variables so that the test suite can
937 decide whether to run tests for quotas > 2G.
938
939PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
940 mailbox_size, and mailbox_filecount in the appendfile transport. If a
941 filecount value is greater than 2G or if a quota value is greater than 2G
942 on a system where the size of off_t is not greater than 4, a panic error
943 is given.
944
1688f43b
PH
945PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
946 never match. The debug and -bh output now contains an explicit error
947 message indicating a malformed IPv4 address or mask.
948
949PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
950 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
951 PH/23 above applies.
952
9675b384
PH
953PH/25 Do not write to syslog when running in the test harness. The only
954 occasion when this arises is a failure to open the main or panic logs
955 (for which there is an explicit test).
956
6a3f1455
PH
957PH/26 Added the /no_tell option to "control=freeze".
958
dac79d3e
PH
959PH/27 If a host name lookup failed very early in a connection, for example, if
960 the IP address matched host_lookup and the reverse lookup yielded a name
961 that did not have a forward lookup, an error message of the form "no IP
962 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
963 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 964
5977a0b3
PH
965PH/28 An enabling patch from MH: add new function child_open_exim2() which
966 allows the sender and the authenticated sender to be set when
967 submitting a message from within Exim. Since child_open_exim() is
968 documented for local_scan(), the new function should be too.
969
c91535f3
PH
970PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
971 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
972 results in an empty string is now treated as unset.
973
0d46a8c8
PH
974PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
975
278c6e6c
PH
976PH/31 Added sender_verify_fail logging option.
977
2cbb4081
PH
978PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
979 needed by RFC 822 but not by RFC 2822 was commented out. I have now
980 tidied the source and removed it altogether.
981
3eef829e
PH
982PH/33 When a queue run was abandoned because the load average was too high, a
983 log line was always written; now it is written only if the queue_run log
984 selector is set. In addition, the log line for abandonment now contains
985 information about the queue run such as the pid. This is always present
986 in "start" and "stop" lines but was omitted from the "abandon" line.
987
1ab95fa6
PH
988PH/34 Omit spaces between a header name and the colon in the error message that
989 is given when verify = headers_syntax fails (if there are lots of them,
990 the message gets confusing).
991
230205fc
PH
992PH/35 Change the default for dns_check_names_pattern to allow slashes within
993 names, as there are now some PTR records that contain slashes. This check
994 is only to protect against broken name servers that fall over on strange
995 characters, so the fact that it applies to all lookups doesn't matter.
996
75e0e026
PH
997PH/36 Now that the new test suite is complete, we can remove some of the
998 special code in Exim that was needed for the old test suite. For example,
999 sorting DNS records because real resolvers return them in an arbitrary
1000 order. The new test suite's fake resolver always returns records in the
1001 same order.
1002
1003PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1004 bounces) except when queue_only is set, to avoid logging races between
1005 the different processes.
1006
145396a6
PH
1007PH/38 Panic-die if .include specifies a non-absolute path.
1008
3cd34f13
PH
1009PH/39 A tweak to the "H" retry rule from its user.
1010
11121d3d
JJ
1011JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1012 a label. They prevented compilation on older perls.
1013
1014JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1015 a warning to be raised on newish perls.
1016
1017JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1018 on queue. Changes to match documented behaviour of showing count of
1019 messages matching specified criteria.
1020
8def5aaf
PH
1021PH/40 Changed the default ident timeout from 30s to 5s.
1022
929ba01c
PH
1023PH/41 Added support for the use of login_cap features, on those BSD systems
1024 that have them, for controlling the resources used by pipe deliveries.
1025
2632889e
PH
1026PH/42 The content-scanning code uses fopen() to create files in which to put
1027 message data. Previously it was not paying any attention to the mode of
1028 the files. Exim runs with umask(0) because the rest of the code creates
1029 files with open(), and sets the required mode explicitly. Thus, these
1030 files were ending up world-writeable. This was not a big issue, because,
1031 being within the spool directory, they were not world-accessible. I have
1032 created a function called modefopen, which takes an additional mode
1033 argument. It sets umask(777), creates the file, chmods it to the required
1034 mode, then resets the umask. All the relevant calls to fopen() in the
1035 content scanning code have been changed to use this function.
1036
944a9c55
PH
1037PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1038 to 24 hours. This avoids potential overflow problems when processing G
1039 and H retry rules. I suspect nobody ever tinkers with this value.
1040
4a23603b
PH
1041PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1042
4730f942
PH
1043PH/45 When the plaintext authenticator is running as a client, the server's
1044 challenges are checked to ensure they are valid base64 strings. By
1045 default, the authentication attempt is cancelled if an invalid string is
1046 received. Setting client_ignore_invalid_base64 true ignores these errors.
1047 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1048 they are received. Thus, the responses can be made to depend on the
1049 challenges. If an invalid string is ignored, an empty string is placed in
1050 the variable.
1051
30dba1e6
PH
1052PH/46 Messages that are created by the autoreply transport now contains a
1053 References: header, in accordance with RFCs 2822 and 3834.
1054
382afc6b
PH
1055PH/47 Added authenticated_sender_force to the smtp transport.
1056
a86229cf
PH
1057PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1058
50c99ba6
PH
1059PH/49 Installed latest patch from the Sieve maintainer.
1060
d35e429d
PH
1061PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1062 was also set, the appendfile transport was unnecessarily scanning a
1063 directory of message files (e.g. for maildir delivery) to find the count
1064 of files (along with the size), even though it did not need this
1065 information. It now does the scan only if it needs to find either the
1066 size of the count of files.
1067
f90d018c
PH
1068PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1069
75def545
PH
1070PH/52 Two bugs concerned with error handling when the smtp transport is
1071 used in LMTP mode:
1072
1073 (i) Exim was not creating retry information for temporary errors given
1074 for individual recipients after the DATA command when the smtp transport
1075 was used in LMTP mode. This meant that they could be retried too
1076 frequently, and not timed out correctly.
1077
1078 (ii) Exim was setting the flag that allows error details to be returned
1079 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1080 recipients that were returned after the DATA command.
1081
1082PH/53 This is related to PH/52, but is more general: for any failing address,
1083 when detailed error information was permitted to be returned to the
1084 sender, but the error was temporary, then after the final timeout, only
1085 "retry timeout exceeded" was returned. Now it returns the full error as
1086 well as "retry timeout exceeded".
1087
c46782ef
PH
1088PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1089 do this, and (what is worse) MTAs that accept it.
1090
71fafd95
PH
1091PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1092 will now be deprecated.
1093
2c5db4fd
PH
1094PH/56 New os.c-cygwin from the Cygwin maintainer.
1095
9cf6b11a
JJ
1096JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1097 formats (previously only available in exim formats via -bpr, -bpru,
1098 and -bpra. Now also available in native and exiqgrep formats)
1099
1100JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1101 with very large, slow to parse queues
1102
1103JJ/08 exipick: added ! as generic prefix to negate any criteria format
1104
1105JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1106
898d150f
PH
1107PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1108 responses to authentication challenges, though it was showing the
1109 challenges; (ii) I've removed the CR characters from the debug output for
1110 SMTP output lines.
1111
46218253
PH
1112PH/58 Allow for the insertion of a newline as well as a space when a string
1113 is turned into more than one encoded-word during RFC 2047 encoding. The
1114 Sieve code now uses this.
1115
e97957bc
PH
1116PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1117 data_4xx, lost_connection, tls_required.
1118
81e509d7
PH
1119PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1120 message was being sent as an SMTP response.
1121
3d240ff7
PH
1122PH/61 Add -l and -k options to exicyclog.
1123
b37c4101
PH
1124PH/62 When verifying, if an address was redirected to one new address, so that
1125 verification continued, and the new address failed or deferred after
1126 having set something in $address_data, the value of $address_data was not
1127 passed back to the ACL. This was different to the case when no
1128 redirection occurred. The value is now passed back in both cases.
1129
79378e0f
PH
1130PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1131 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1132 use login_cap.h, so on its own it isn't the distinguishing feature. The
1133 new name refers directly to the setclassresources() function.
1134
e49c7bb4
PH
1135PH/65 Added configuration files for NetBSD3.
1136
d114ec46
PH
1137PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1138
f3d7df6c
PH
1139PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1140 is preferred over IPv4.
1141
715ab376
PH
1142PH/68 The bounce_return_message and bounce_return_body options were not being
1143 honoured for bounces generated during the reception of non-SMTP messages.
1144 In particular, this applied to messages rejected by the ACL. This bug has
1145 been fixed. However, if bounce_return_message is true and bounce_return_
1146 body is false, the headers that are returned for a non-SMTP message
1147 include only those that have been read before the error was detected.
1148 (In the case of an ACL rejection, they have all been read.)
1149
6b31b150
PH
1150PH/69 The HTML version of the specification is now built in a directory called
1151 spec_html instead of spec.html, because the latter looks like a path with
1152 a MIME-type, and this confuses some software.
1153
1154PH/70 Catch two compiler warnings in sieve.c.
1155
d515a917
PH
1156PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1157 function verify_get_ident() calls ip_connect() to connect a socket, but
1158 if the "connect()" function timed out, ip_connect() used to close the
1159 socket. However, verify_get_ident() also closes the socket later, and in
1160 between Exim writes to the log, which may get opened at this point. When
1161 the socket was closed in ip_connect(), the log could get the same file
1162 descriptor number as the socket. This naturally causes chaos. The fix is
1163 not to close the socket in ip_connect(); the socket should be closed by
1164 the function that creates it. There was only one place in the code where
1165 this was missing, in the iplookup router, which I don't think anybody now
1166 uses, but I've fixed it anyway.
1167
9b8fadde
PH
1168PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1169 well as to direct DNS lookups. Otherwise the handling of names in host
1170 lists is inconsistent and therefore confusing.
1171
214e2000 1172
5de37277
PH
1173Exim version 4.60
1174-----------------
1175
cc38ddbf
PH
1176PH/01 Two changes to the default runtime configuration:
1177
1178 (1) Move the checks for relay_from_hosts and authenticated clients from
1179 after to before the (commented out) DNS black list checks.
1180
1181 (2) Add control=submission to the relay_from_hosts and authenticated
1182 clients checks, on the grounds that messages accepted by these
1183 statements are most likely to be submissions.
5de37277 1184
72fdd6ae
PH
1185PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1186
1187 (1) Generate an error if the third argument for the ${prvs expansion is
1188 not a single digit.
1189
1190 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1191 string.
1192
1193 (3) Reset the variables that are obtained from the first argument of
1194 ${prvscheck and used in the second argument before leaving the code,
1195 because their memory is reclaimed, so using them afterwards may do
1196 silly things.
1197
1198 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1199 one (it's much easier than Tom thought :-).
1200
1201 (5) Because of (4), we can now allow for the use of $prvscheck_result
1202 inside the third argument.
cb9328de 1203
cb741023
PH
1204PH/03 For some reason, the default setting of PATH when running a command from
1205 a pipe transport was just "/usr/bin". I have changed it to
1206 "/bin:/usr/bin".
1207
f174f16e
PH
1208PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1209 anything to be listed in the output from -bV.
b2f5a032 1210
c25242d7
PH
1211PH/05 When a filter generated an autoreply, the entire To: header line was
1212 quoted in the delivery log line, like this:
1213
1214 => >A.N.Other <ano@some.domain> <original@ddress> ...
1215
1216 This has been changed so that it extracts the operative address. There
1217 may be more than one such address. If so, they are comma-separated, like
1218 this:
1219
1220 => >ano@some.domain,ona@other.domain <original@ddress> ...
1221
82c19f95
PH
1222PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1223 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1224 not being looked up in the rDNS to get a host name, Exim was showing the
1225 IP address twice in Received: lines, even though the IP addresses were
1226 identical. For example:
1227
1228 Received: from [1.2.3.4] (helo=[1.2.3.4])
1229
1230 However, if the real host name was known, it was omitting the HELO data
1231 if it matched the actual IP address. This has been tidied up so that it
1232 doesn't show the same IP address twice.
1233
d7ffbc12
PH
1234PH/07 When both +timestamp and +memory debugging was on, the value given by
1235 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1236 called by the debug printing, thereby overwriting the timestamp buffer.
1237 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1238
9f526266
PH
1239PH/08 When the original message was included in an autoreply transport, it
1240 always said "this is a copy of the message, including all the headers",
1241 even if body_only or headers_only was set. It now gives an appropriate
1242 message.
1243
87fcc8b9
PH
1244PH/09 Applied a patch from the Sieve maintainer which:
1245
1246 o fixes some comments
1247 o adds the (disabled) notify extension core
1248 o adds some debug output for the result of if/elsif tests
1249 o points to the current vacation draft in the documentation
1250 and documents the missing references header update
1251
1252 and most important:
1253
1254 o fixes a bug in processing the envelope test (when testing
1255 multiple envelope elements, the last element determinted the
1256 result)
1257
456682f5
PH
1258PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1259 Electronic Mail") by including:
1260
1261 Auto-submitted: auto-generated
1262
1263 in the messages that it generates (bounce messages and others, such as
1264 warnings). In the case of bounce messages for non-SMTP mesages, there was
1265 also a typo: it was using "Auto_submitted" (underscore instead of
1266 hyphen). Since every message generated by Exim is necessarily in response
1267 to another message, thes have all been changed to:
1268
1269 Auto-Submitted: auto-replied
1270
1271 in accordance with these statements in the RFC:
1272
1273 The auto-replied keyword:
1274
1275 - SHOULD be used on messages sent in direct response to another
1276 message by an automatic process,
1277
1278 - MUST NOT be used on manually-generated messages,
1279
1280 - MAY be used on Delivery Status Notifications (DSNs) and Message
1281 Disposition Notifications (MDNs),
1282
1283 - MUST NOT be used on messages generated by automatic or periodic
1284 processes, except for messages which are automatic responses to
1285 other messages.
1286
3e46c1aa
PH
1287PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1288 to the default Received: header definition.
456682f5 1289
49826d12
PH
1290PH/12 Added log selector acl_warn_skipped (default on).
1291
eba0c039
PH
1292PH/13 After a successful wildlsearch lookup, discard the values of numeric
1293 variables because (a) they are in the wrong storage pool and (b) even if
1294 they were copied, it wouldn't work properly because of the caching.
1295
a0d6ba8a
PH
1296PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1297 checking when decoding. Apparently there are clients that generate
1298 overlong encoded strings. Why am I not surprised?
1299
f0917727
PH
1300PH/15 If the first argument of "${if match_address" was not empty, but did not
1301 contain an "@" character, Exim crashed. Now it writes a panic log message
1302 and treats the condition as false.
1303
096fee00
PH
1304PH/16 In autoreply, treat an empty string for "once" the same as unset.
1305
024bd3c2
PH
1306PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1307 extension "envelope-auth". The code is finished and in agreement with
1308 other implementations, but there is no documentation so far and in fact,
1309 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1310 not changing the active code.
1311
1312 Print executed "if" and "elsif" statements when debugging is used. This
1313 helps a great deal to understand what a filter does.
1314
1315 Document more things not specified clearly in RFC3028. I had all this
1316 sorted out, when out of a sudden new issues came to my mind. Oops."
1317
df199fec
PH
1318PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1319 (Bugzilla #53).
1320
d27f1df3
PH
1321PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1322 canonical form (as documented). However, after a host name lookup from
1323 the IP address, check_host() was doing a simple string comparison with
1324 addresses acquired from the DNS when checking that the found name did
1325 have the original IP as one of its addresses. Since any found IPv6
1326 addresses are likely to be in abbreviated form, the comparison could
1327 fail. Luckily, there already exists a function for doing the comparison
1328 by converting both addresses to binary, so now that is used instead of
1329 the text comparison.
1330
96776534
PH
1331PH/20 There was another similar case to PH/19, when a complete host name was
1332 given in a host list; looking up its IP address could give an abbreviated
1333 form, whereas the current host's name might or might not be abbreviated.
1334 The same fix has been applied.
1335
5de37277 1336
9a799bc0
PH
1337Exim version 4.54
1338-----------------
1339
1340PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1341 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1342 It now does.
1343
99a4b039
PH
1344PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1345 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1346
1347PH/03 Typo: missing ".o" in src/pcre/Makefile.
1348
4b233853
PH
1349PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1350 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1351 Also, for "Auto-Submitted", treat anything other than "no" as
1352 non-personal, in accordance with RFC 3834. (Previously it treated
1353 anything starting "auto-" as non-personal.)
1354
8857ccfd
PH
1355TF/01 The control=submission/name=... option had a problem with syntax
1356 errors if the name included a slash character. The /name= option
1357 now slurps the rest of the string, so it can include any characters
1358 but it must come last in the list of options (after /sender_retain
1359 or /domain=).
1360
433a2980
PH
1361PH/05 Some modifications to the interface to the fake nameserver for the new
1362 testing suite.
1363
3e46c1aa 1364
9a799bc0 1365
e3a311ba
TK
1366Exim version 4.53
1367-----------------
1368
1369TK/01 Added the "success_on_redirect" address verification option. See
1370 NewStuff for rationale and an example.
1371
13b685f9
PH
1372PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1373
395ff96d
PH
1374PH/02 Patch to exigrep to allow it to work on syslog lines.
1375
5b68f6e4
PH
1376PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1377 fread() to skip over the body file's header line, because in Cygwin the
1378 header line is locked and is inaccessible.
1379
1ab52c69
PH
1380PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1381 co-exist for some time) to make it clear that it is the Exim ID that is
1382 referenced, not the Message-ID: header line.
1383
b07e6aa3
PH
1384PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1385 string_format() function, because snprintf() does not exist on all
1386 operating systems.
1387
254e032f
PH
1388PH/06 The use of forbid_filter_existstest now also locks out the use of the
1389 ${stat: expansion item.
1390
3af76a81
PH
1391PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1392 protocol synchronization error", to keep the pedants happy.
1393
2548ba04
PH
1394PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1395 well as for IRIX systems, when gcc is being used. See the host.c source
1396 file for comments.
1397
b6c6011d
PH
1398PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1399
cf39cf57
PH
1400PH/10 Named domain lists were not working if used in a queue_smtp_domains
1401 setting.
1402
f1513293
PH
1403PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1404 transport and to the smtp transport in LMTP mode.
1405
727549a4
PH
1406TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1407
af46795e
PH
1408PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1409 run a filter in a subprocess. This could lead to confusion in subsequent
1410 lookups in the parent process. There should also be a search_tidyup() at
1411 the end of the subprocess.
1412
d7b47fd0
PH
1413PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1414 only if the host matched helo_try_verify_hosts, which caused the
1415 verification to occur when the EHLO/HELO command was issued. The ACL just
1416 tested the remembered result. Now, if a previous verification attempt has
1417 not happened, "verify = helo" does it there and then.
1418
ee744174
JJ
1419JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1420
b582ab87
PH
1421TK/03 Fix log output including CR from clamd.
1422
41a13e0a
PH
1423PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1424 exist provoked a memory error which could cause a segfault.
1425
f625cc5a
PH
1426PH/15 Installed PCRE 6.2
1427
1428PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1429
21f7af35
PH
1430PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1431 of the problem. Specifically, suggested +O2 rather than +O1 for the
1432 HP-UX compiler.
1433
31480e42
PH
1434PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1435
2d280592
PH
1436PH/20 If a delivery was routed to a non-standard port by means of an SRV
1437 record, the port was not correctly logged when the outgoing_port log
1438 selector was set (it logged the transort's default port).
1439
7cd1141b
PH
1440PH/21 Added support for host-specific ports to manualroute, queryprogram,
1441 fallback_hosts, and "hosts" in the smtp transport.
1442
1443PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1444 host errors such as "Connection refused".
1445
750af86e
PH
1446PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1447 authentication with radiusclient 0.4.9:
1448
1449 - Error returned from rc_read_config was caught wrongly
1450 - Username/password not passed on to radius server due to wrong length.
1451
1452 The presumption is that some radiusclient API changes for 4.51/PH/17
1453 were not taken care of correctly. The code is still untested by me (my
1454 Linux distribution still has 0.3.2 of radiusclient), but it was
1455 contributed by a Radius user.
1456
1457PH/24 When doing a callout, the value of $domain wasn't set correctly when
1458 expanding the "port" option of the smtp transport.
1459
4304270b
TK
1460TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1461 while reading a MIME header. Thanks to Tom Hughes for a patch.
1462
750af86e
PH
1463PH/24 Include config.h inside local_scan.h so that configuration settings are
1464 available.
1465
64ffc24f
PH
1466PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1467 that in an ACL for RCPT (for example), you can examine exactly what was
1468 received.
1469
5dd9625b
PH
1470PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1471 commands, but it was not correctly comparing the address with the actual
1472 client host address. Thus, it would show the EHLO address in Received:
1473 header lines when this was not necessary.
1474
5591031b
PH
1475PH/27 Added the % operator to ${eval:}.
1476
ba18e66a
PH
1477PH/28 Exim tries to create and chdir to its spool directory when it starts;
1478 it should be ignoring failures (because with -C, for example, it has lost
1479 privilege). It wasn't ignoring creation failures other than "already
1480 exists".
1481
9cec981f
PH
1482PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1483 -bV or -d is used.
1484
aa2b5c79
PH
1485PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1486 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1487 too many continuations, the temporary file was not being removed, and the
1488 return code was incorrect.
aa2b5c79 1489
48a53b7f
PH
1490PH/31 Missing "BOOL" in function definition in filtertest.c.
1491
1c59d63b
PH
1492PH/32 Applied Sieve patches from the maintainer.
1493
671012da
TK
1494TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1495
1509d3a8
PH
1496PH/33 Added "verify = not_blind".
1497
1498PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1499 Local/Makefile (with some defaults set). These are used in built scripts
1500 such as exicyclog, but they have never been used in the exim_install
1501 script (though there are many overriding facilities there). I have
1502 arranged that the exim_install script now takes note of these two
1503 settings.
1504
1505PH/35 Installed configuration files for Dragonfly.
1506
2fe1a124
PH
1507PH/36 When a locally submitted message by a trusted user did not contain a
1508 From: header, and the sender address was obtained from -f or from an SMTP
1509 MAIL command, and the trusted user did not use -F to supply a sender
1510 name, $originator_name was incorrectly used when constructing a From:
1511 header. Furthermore, $originator_name was used for submission mode
1512 messages from external hosts without From: headers in a similar way,
1513 which is clearly wrong.
1514
8800895a
PH
1515PH/37 Added control=suppress_local_fixups.
1516
ccfdb010
PH
1517PH/38 When log_selector = +received_sender was set, and the addition of the
1518 sender made the log line's construction buffer exactly full, or one byte
1519 less than full, an overflow happened when the terminating "\n" was
1520 subsequently added.
1521
1130bfb0
PH
1522PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1523 when the result of a list match is failure because a DNS lookup failed.
1524
ebcb507f
PH
1525PH/40 RM_COMMAND is now used in the building process.
1526
c35e155c
PH
1527PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1528 the "build-* directories that it finds.
1529
95d1f782
PH
1530PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1531 address in a domain literal was a prefix of an interface address.
1532
fd6de02e
PH
1533PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1534 when verifying a sender address, unless rewrite_headers is false.
1535
58de37c5
PH
1536PH/44 Wrote a long comment about why errors_to addresses are verified as
1537 recipients, not senders.
1538
261cf466
TF
1539TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1540 the ratelimit ACL was added.
1541
3ee512ff
PH
1542PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1543
e08c430f
PH
1544PH/46 Added extra information about PostgreSQL errors to the error string.
1545
bef5a11f
PH
1546PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1547 avoiding the need to install special zones in a real server. This is
1548 backwards compatible; if it can't find the fake resolver, it drops back.
1549 Thus, both old and new test suites can be run.
1550
7546de58
TF
1551TF/02 Added util/ratelimit.pl
1552
e5d5a95f
TF
1553TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1554 clock is set back in time.
1555
2e88a017
TF
1556TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1557 Candler <B.Candler@pobox.com>.
1558
a5f65aa4
TF
1559TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1560 OK for addresses that are the result of redirections.
1561
e7726cbf
PH
1562PH/48 A number of further additions for the benefit of the new test suite,
1563 including a fake gethostbyname() that interfaces to the fake DNS resolver
1564 (see PH/47 above).
1565
a7fdad5b
TF
1566TF/06 The fix for widen_domains has also been applied to qualify_single and
1567 search_parents which are the other dnslookup options that can cause
1568 header rewrites.
1569
6af56900
PH
1570PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1571 type ("H").
1572
0925ede6
PH
1573PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1574
66afa403
TF
1575TF/07 Exim produced the error message "an SRV record indicated no SMTP
1576 service" if it encountered an MX record with an empty target hostname.
1577 The message is now "an MX or SRV record indicated no SMTP service".
1578
0154e85a
TF
1579TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1580 if the DNS of the sending site is misconfigured. This is quite a
1581 common situation. This change restores the behaviour of treating a
1582 helo verification defer as a failure.
1583
16f12c76
PH
1584PH/51 If self=fail was set on a router, the bounce message did not include the
1585 actual error message.
1586
bbe902f0 1587
e5a9dba6
PH
1588Exim version 4.52
1589-----------------
1590
1591TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1592
22c3b60b
PH
1593PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1594 command itself ended in error, the underlying message about the transport
1595 filter timeout was being overwritten with the pipe command error. Now the
1596 underlying error message should be appended to the second error message.
1597
06a9b4b5
PH
1598TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1599
c1ac6996
PH
1600PH/02 Reduce the amount of output that "make" produces by default. Full output
1601 can still be requested.
1602
9c7a242c
PH
1603PH/03 The warning log line about a condition test deferring for a "warn" verb
1604 was being output only once per connection, rather than after each
1605 occurrence (because it was using the same function as for successful
1606 "warn" verbs). This seems wrong, so I have changed it.
1607
87ba3f5f
PH
1608TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1609 it should not have, which might have caused a crash in the right
1610 circumstances, but probably never did.
1611
1612PH/04 Installed a modified version of Tony Finch's patch to make submission
1613 mode fix the return path as well as the Sender: header line, and to
1614 add a /name= option so that you can make the user's friendly name appear
1615 in the header line.
1616
29aba418
TF
1617TF/03 Added the control = fakedefer ACL modifier.
1618
fe0dab11
TF
1619TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1620 Mark Lowes for thorough testing.
870f6ba8 1621
11d337a4
TK
1622TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1623
1624TK/03 Merged latest SRS patch from Miles Wilton.
1625
415c8f3b
PH
1626PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1627 with the definition in sysexits.h (which is #included earlier).
1628 Fortunately, Exim does not actually use EX_OK. The code used to try to
1629 preserve the sysexits.h value, by assumimg that macro definitions were
1630 scanned for macro replacements. I have been disabused of this notion,
1631 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1632
958541e9
PH
1633PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1634 in the smtp transport. When a block could not be written in a single
1635 write() function, the timeout was being re-applied to each part-write.
1636 This seems wrong - if the receiver was accepting one byte at a time it
1637 would take for ever. The timeout is now adjusted when this happens. It
1638 doesn't have to be particularly precise.
1639
c206415f
TK
1640TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1641 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1642
2a4be8f9
PH
1643PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1644 without a domain if the check to <postmaster@domain> fails.
1645
1cba11c5
SC
1646SC/01 Eximstats: added -xls and the ability to specify output files
1647 (patch written by Frank Heydlauf).
1648
1649SC/02 Eximstats: use FileHandles for outputing results.
1650
1651SC/03 Eximstats: allow any combination of xls, txt, and html output.
1652
1653SC/04 Eximstats: fixed display of large numbers with -nvr option
1654
1655SC/05 Eximstats: fixed merging of reports with empty tables.
1656
1657SC/06 Eximstats: added the -include_original_destination flag
1658
1659SC/07 Eximstats: removed tabs and trailing whitespace.
1660
1005d00e
TK
1661TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1662
1663TK/06 MBOX spool code: Add real "From " MBOX separator line
1664 so the .eml file is really in mbox format (even though
1665 most programs do not really care). Patch from Alex Miller.
1666
1667TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1668 The latter is generated from $received_to and is only set if the
1669 message has one envelope recipient. SA can use these headers,
1670 obviously out-of-the-box. Patch from Alex Miller.
1671
9b4768fa
PH
1672PH/08 The ${def test on a variable was returning false if the variable's
1673 value was "0", contrary to what the specification has always said!
1674 The result should be true unless the variable is empty.
1675
1676PH/09 The syntax error of a character other than { following "${if
1677 def:variable_name" (after optional whitespace) was not being diagnosed.
1678 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1679 accidental colon was present, for example, could give incorrect results.
1680
0d7eb84a
PH
1681PH/10 Tidied the code in a number of places where the st_size field of a stat()
1682 result is used (not including appendfile, where other changes are about
1683 to be made).
1684
1685PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1686 This involved changing a lot of size variables from int to off_t. It
1687 should work with maildirs and everything.
1688
40727bee
TK
1689TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1690 spamd dying while we are connected to it.
1691
554d2369
TF
1692TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1693 <jgh@wizmail.org>
1694
1f922db1
PH
1695PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1696 function for BDB 4.3.
1697
ef213c3b
PH
1698PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1699
8ac170f3
PH
1700PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1701 the sources for PCRE have been re-arranged and more files are now
1702 involved.
1703
b1c749bb
PH
1704PH/15 The code I had for printing potentially long long variables in PH/11
1705 above was not the best (it lost precision). The length of off_t variables
1706 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1707 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1708 to be "long long int" or "long int". This is needed for the internal
1709 formatting function string_vformat().
b1c749bb 1710
4aac9b49
PH
1711PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1712 the configuration file to be ":syslog", then the script "guesses" where
1713 the logs files are, rather than using the compiled in default. In our
1714 case the guess is not the same as the compiled default, so the script
1715 suddenly stopped working when I started to use syslog. The patch checks
1716 to see if log_file_path is "". If so, it attempts to read it from exim
1717 with no configuration file to get the compiled in version, before it
1718 falls back to the previous guessing code."
1719
294520c8
TK
1720TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1721 implementing BATV in an Exim configuration. See NewStuff for the gory
1722 details.
1723
5bd022fe
PH
1724PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1725 Makefile that are specific to HP-UX.
1726
90e9ce59
PH
1727PH/18 If the "use_postmaster" option was set for a recipient callout together
1728 with the "random" option, the postmaster address was used as the MAIL
1729 FROM address for the random test, but not for the subsequent recipient
1730 test. It is now used for both.
1731
5ea81592
PH
1732PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1733 patch removes a few documentation additions to RFC 3028, because the
1734 latest draft now contains them. It adds the new en;ascii-case comparator
1735 and a new error check for 8bit text in MIME parts. Comparator and
1736 require names are now matched exactly. I enabled the subaddress
1737 extension, but it is not well tested yet (read: it works for me)."
1738
c6c2dc1d
PH
1739PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1740 rework some of the code of TK/09 above to avoid the hardwired use of
1741 "%lld" and "long long". Replaced the call to snprintf() with a call to
1742 string_vformat().
1743
fffffe4c
PH
1744PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1745 records point to non-existent hosts", "retry timeout exceeded", and
1746 "retry time not reached for any host after a long failure period".
ca02eafb 1747
9a26b6b2
PH
1748PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1749 experimental DomainKeys support:
1750
1751 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1752 (2) On an error such as an illegally used "control", the wrong name for
1753 the control was given.
1754
1755 These problems did NOT occur unless DomainKeys support was compiled.
1756
4aee0225
PH
1757PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1758
32d668a5
PH
1759PH/24 Added ${if match_ip condition.
1760
8187c3f3
PH
1761PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1762 databases so that it will be absolutely obvious if a crash occurs in the
1763 DB library. This is a regular occurrence (often caused by mis-matched
1764 db.h files).
1765
ff790e47 1766PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1767 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1768 picked up on a user's system that detects such things. There doesn't seem
1769 to be a gcc warning option for this - only an attribute that has to be
1770 put on the function's prototype. It seems that in Fedora Core 4 they have
1771 set this on a number of new functions. No doubt there will be more in due
1772 course.
ff790e47 1773
5417f6d1
PH
1774PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1775 specify a transport. However, if an address that was verified by such a
1776 router was the subject of a callout, Exim crashed because it tried to
1777 read the rcpt_include_affixes from the non-existent transport. Now it
1778 just assumes that the setting of that option is false. This bug was
1779 introduced by 4.51/PH/31.
1780
59cf8544
PH
1781PH/28 Changed -d+all to exclude +memory, because that information is very
1782 rarely of interest, but it makes the output a lot bigger. People tend to
1783 do -d+all out of habit.
1784
e7ad8a65
PH
1785PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1786 code in os-type was giving problems when libc.so lives in lib64, like on
1787 x86_64 Fedora Core.
1788
ade42478
PH
1789PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1790 aren't the modern standard, and it seems that some systems' include files
1791 don't always have them. Exim was already checking for some of the newer
1792 ones like T_AAAA, and defining it itself. I've added checks for all the
1793 record types that Exim uses.
1794
182ad5cf
PH
1795PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1796 not automatically generating a new one, as it is supposed to. This
1797 prevented TLS from working. If the file did exist, but contained invalid
1798 data, a new version was generated, as expected. It was only the case of a
1799 non-existent file that was broken.
1800
b0d9fc80
TK
1801TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1802 with a change in libdomainkeys > 0.64.
1803
1804TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1805 from DNS. If the selector record carries the flag, it now has
1806 precedence over the domain-wide flag.
1807
1808TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1809
47c7a64a
PH
1810PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1811 the use of a port name that isn't defined in /etc/services) occurred, the
1812 message was deferred as in a normal delivery, and thus remained on the
1813 spool, instead of being failed because of the mua_wrapper setting. This
1814 is now fixed, and I tidied up some of the mua_wrapper messages at the
1815 same time.
1816
a388bce4
SC
1817SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1818 the messages in a hash of arrays rather than using individual hashes.
1819 This is a bit cleaner and results in dramatic memory savings, albeit
1820 at a slight CPU cost.
1821
1822SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1823 as requested by Marc Sherman.
1824
1825SC/10 Eximstats: added histograms for user specified patterns as requested
1826 by Marc Sherman.
1827
0793e4ed
SC
1828SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1829
c58b88df
PH
1830PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1831 fopen() in the content-scanning modules that did not already have it.
1832
e7ad8a65 1833
7982096b
PH
1834Exim version 4.51
1835-----------------
1836
1a46a8c5
PH
1837TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1838 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1839
2f079f46 1840TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1841
1842TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1843
1844PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1845 to test Sieve filters that use "vacation".
1846
1847PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1848 that changes the way the GnuTLS parameters are stored in the cache file.
1849 The new format can be generated externally. For backward compatibility,
1850 if the data in the cache doesn't make sense, Exim assumes it has read an
1851 old-format file, and it generates new data and writes a new file. This
1852 means that you can't go back to an older release without removing the
1853 file.
1854
1855PH/03 A redirect router that has both "unseen" and "one_time" set does not
1856 work if there are any delivery delays because "one_time" forces the
1857 parent to be marked "delivered", so its unseen clone is never tried
1858 again. For this reason, Exim now forbids the simultaneous setting of
1859 these two options.
1860
1861PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1862 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1863 entry if you want to know the details. The fix, however, neglected to
1864 consider the case when local delivery batching is involved. The test for
1865 "previously delivered" was not happening when checking to see if an
1866 address could be batched with a previous (undelivered) one; under
1867 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1868 address.
1a46a8c5
PH
1869
1870PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1871 in its include files, and this causes problems building Exim.
1872
1873PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1874 header_syntax) but Exim was just ignoring anything given after a slash.
1875 In particular, this caused confusion with an attempt to use "verify =
1876 reverse_host_lookup/defer_ok". An error is now given when options are
1877 supplied for verify items that do not have them. (Maybe reverse_host_
1878 lookup should have a defer_ok option, but that's a different point.)
1879
1880PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1881 defined by RFC 821) to 2048, because there were problems with some AUTH
1882 commands, and RFC 1869 says the size should be increased for extended
1883 SMTP commands that take arguments.
1884
1885PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1886 Finch).
1887
1888PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1889 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1890
49c2d5ea
PH
1891PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1892 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1893 whatever). Otherwise the password may appear in the log. Following change
1894 PH/42 below, there is no longer a chance of it appearing in a bounce
1895 message.
49c2d5ea 1896
bf759a8b
PH
1897PH/11 Installed exipick version 20050225.0 from John Jetmore.
1898
83364d30
PH
1899PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1900 of its addresses was ever tried. (Bugzilla bug #2.)
1901
7999bbd7
PH
1902PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1903 the result incorrectly in the debug output. (It correctly added a newline
1904 to what was transported.)
1905
7dbf77c9
PH
1906TF/01 Added $received_time.
1907
74e0617f
PH
1908PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1909 commented out examples of how to interface to a virus scanner and to
1910 SpamAssassin. Also added commented examples of av_scanner and
1911 spamd_address settings.
1912
2f079f46
PH
1913PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1914 and controls are allowed in which ACLs. There were a couple of minor
1915 errors. Some of the entries in the conditions table (which is a table of
1916 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1917 negation of where the condition IS allowed.
1918
8c841523
PH
1919PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1920
7766a4f0
PH
1921PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1922 header file does not have a version number, so I've had to invent a new
1923 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1924 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1925 radiusclient), but it was contributed by a Radius user.
1926
8b417f2c
PH
1927PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1928 files or directories, for OpenSSL.
1929
901f42cb
PH
1930PH/19 When an Exim process that is running as root has to create an Exim log
1931 file, it does so in a subprocess that runs as exim:exim so as to get the
1932 ownership right at creation (otherwise, other Exim processes might see
1933 the file with the wrong ownership). There was no test for failure of this
1934 fork() call, which would lead to the process getting stuck as it waited
1935 for a non-existent subprocess. Forks do occasionally fail when resources
1936 run out. I reviewed all the other calls to fork(); they all seem to check
1937 for failure.
1938
f9b9210e
PH
1939PH/20 When checking for unexpected SMTP input at connect time (before writing
1940 the banner), Exim was not dealing correctly with a non-positive return
1941 from the read() function. If the client had disconnected by this time,
1942 the result was a log entry for a synchronization error with an empty
1943 string after "input=" when read() returned zero. If read() returned -1
1944 (an event I could not check), uninitialized data bytes were printed.
1945 There were reports of junk text (parts of files, etc) appearing after
1946 "input=".
1947
54cdb463
PH
1948PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1949
cf00dad6
PH
1950PH/22 Added support for macro redefinition, and (re)definition in between
1951 driver and ACL definitions.
1952
acb1b346
PH
1953PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1954 forgetting to use the resulting value; it was using the unexpanded value.
1955
c5ddb310
PH
1956PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1957 hadn't been configured. The fix is from Juergen Kreileder, who
1958 understands it better than I do:
1959
1960 "Here's what I see happening with three configured cyrus_sasl
1961 authenticators configured (plain, login, cram-md5):
1962
1963 On startup auth_cyrus_sasl_init() gets called for each of these.
1964 This means three calls to sasl_listmech() without a specified mech_list.
1965 => SASL tests which mechs of all available mechs actually work
1966 => three warnings about OTP not working
1967 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1968
1969 With the patch, sasl_listmech() also gets called three times. But now
1970 SASL's mech_list option is set to the server_mech specified in the the
1971 authenticator. Or in other words, the answer from sasl_listmech()
1972 gets limited to just the mech you're testing for (which is different
1973 for each call.)
1974 => the return list contains just 'plain' or 'login', 'cram-md5' or
1975 nothing depending on the value of ob->server_mech.
1976
1977 I've just tested the patch: Authentication still works fine,
1978 unavailable mechs specified in the exim configuration are still
1979 caught, and the auth.log warnings about OTP are gone."
1980
31619da6
PH
1981PH/25 When debugging is enabled, the contents of the command line are added
1982 to the debugging output, even when log_selector=+arguments is not
1983 specified.
1984
bebaf0fc
PH
1985PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1986 answer is "GNU", and only if the return is "GNU/something" is the answer
1987 "Linux".
1988
475fe28a
PH
1989PH/27 $acl_verify_message is now set immediately after the failure of a
1990 verification in an ACL, and so is available in subsequent modifiers. In
1991 particular, the message can be preserved by coding like this:
1992
1993 warn !verify = sender
1994 set acl_m0 = $acl_verify_message
1995
1996 Previously, $acl_verify_message was set only while expanding "message"
1997 and "log_message" when a very denied access.
1998
7e8bec7a
PH
1999PH/28 Modified OS/os.c-Linux with
2000
2001 -#ifndef OS_LOAD_AVERAGE
2002 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2003
2004 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2005 nomenclature these days.)
2006
e4a89c47
PH
2007PH/29 Installed patch from the Sieve maintainer that adds the options
2008 sieve_useraddress and sieve_subaddress to the redirect router.
2009
5ca2a9a1
PH
2010PH/30 In these circumstances:
2011 . Two addresses routed to the same list of hosts;
2012 . First host does not offer TLS;
2013 . First host accepts first address;
2014 . First host gives temporary error to second address;
2015 . Second host offers TLS and a TLS session is established;
2016 . Second host accepts second address.
2017 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2018 and peerdn, if requested) that were in fact used only for the second
2019 address.
7e8bec7a 2020
c688b954
PH
2021PH/31 When doing a callout as part of verifying an address, Exim was not paying
2022 attention to any local part prefix or suffix that was matched by the
2023 router that accepted the address. It now behaves in the same way as it
2024 does for delivery: the affixes are removed from the local part unless
2025 rcpt_include_affixes is set on the transport.
2026
fed77020
PH
2027PH/32 Add the sender address, as F=<...>, to the log line when logging a
2028 timeout during the DATA phase of an incoming message.
2029
7fe1560f
PH
2030PH/33 Sieve envelope tests were broken for match types other than :is. I have
2031 applied a patch sanctioned by the Sieve maintainer.
c688b954 2032
ebb6e6d5
PH
2033PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2034 the uid or gid is negative. A case of a negative gid caused this to be
2035 noticed. The fix allows for either to be negative.
2036
9c4e8f60
PH
2037PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2038 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2039 overlooked.
2040
2041PH/36 The change PH/12 above was broken. Fixed it.
2042
d7174846
PH
2043PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2044 the grounds that routing the same address twice would always produce the
2045 same answer. This might have been true once, but it is certainly no
2046 longer true now. Routing a child address may depend on the previous
2047 routing that produced that child. Some complicated redirection strategies
2048 went wrong when messages had multiple recipients, and made Exim's
2049 behaviour dependent on the order in which the addresses were given.
2050
2051 I have moved the duplicate checking until after the routing is complete.
2052 Exim scans the addresses that are assigned to local and remote
2053 transports, and removes any duplicates. This means that more work will be
2054 done, as duplicates will always all be routed, but duplicates are
2055 presumably rare, so I don't expect this is of any significance.
2056
2057 For deliveries to pipes, files, and autoreplies, the duplicate checking
2058 still happens during the routing process, since they are not going to be
2059 routed further.
2060
cfe75fc3
PH
2061PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2062 It corrects a timeout issue with spamd. This is Ian's comment: "The
2063 background is that sometimes spamd either never reads data from a
2064 connection it has accepted, or it never writes response data. The exiscan
2065 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2066 blindly assumes that writes won't block so it may never time out."
2067
be22d70e
PH
2068PH/39 Allow G after quota size as well as K and M.
2069
0612b098
PH
2070PH/40 The value set for $authenticated_id in an authenticator may not contain
2071 binary zeroes or newlines because the value is written to log lines and
2072 to spool files. There was no check on this. Now the value is run through
2073 the string_printing() function so that such characters are converted to
2074 printable escape sequences.
2075
2e0c1448
PH
2076PH/41 $message_linecount is a new variable that contains the total number of
2077 lines in the message. Compare $body_linecount, which is the count for the
2078 body only.
2079
447d236c
PH
2080PH/42 Exim no longer gives details of delivery errors for specific addresses in
2081 bounce and delay warning messages, except in certain special cases, which
2082 are as follows:
2083
2084 (a) An SMTP error message from a remote host;
2085 (b) A message specified in a :fail: redirection;
2086 (c) A message specified in a "fail" command in a system filter;
2087 (d) A message specified in a FAIL return from the queryprogram router;
2088 (e) A message specified by the cannot_route_message router option.
2089
2090 In these cases only, Exim does include the error details in bounce and
2091 warning messages. There are also a few cases where bland messages such
2092 as "unrouteable address" or "local delivery error" are given.
2093
d20976dc
PH
2094PH/43 $value is now also set for the "else" part of a ${run expansion.
2095
f656d135
PH
2096PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2097 being worked on, but at least Exim now implements the latest version to
2098 play with."
2099
2e2a30b4
PH
2100PH/45 In a pipe transport, although a timeout while waiting for the pipe
2101 process to complete was treated as a delivery failure, a timeout while
2102 writing the message to the pipe was logged, but erroneously treated as a
2103 successful delivery. Such timeouts include transport filter timeouts. For
2104 consistency with the overall process timeout, these timeouts are now
2105 treated as errors, giving rise to delivery failures by default. However,
2106 there is now a new Boolean option for the pipe transport called
2107 timeout_defer, which, if set TRUE, converts the failures into defers for
2108 both kinds of timeout. A transport filter timeout is now identified in
2109 the log output.
2110
9176e9f0
PH
2111PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2112 systems where "make" and "gmake" are different, calling "gmake" at top
2113 level broke things. I've arranged for the value of $(MAKE) to be passed
2114 from the Makefile to this script so that it can call the same version of
2115 "make".
2116
7982096b 2117
bbe902f0
PH
2118A note about Exim versions 4.44 and 4.50
2119----------------------------------------
2120
2121Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2122changes of various kinds. As a consequence, a big documentation update was
2123needed. This delayed the release for rather longer than seemed good, especially
2124in the light of a couple of (minor) security issues. Therefore, the changes
2125that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2126release. So 4.44 and 4.50 are in effect two different branches that both start
2127from 4.43.
2128
2129I have left the 4.50 change log unchanged; it contains all the changes since
21304.43. The change log for 4.44 is below; many of its items are identical to
2131those for 4.50. This seems to be the most sensible way to preserve the
2132historical information.
2133
2134
f7b63901 2135Exim version 4.50
495ae4b0
PH
2136-----------------
2137
5fe762f6
PH
2138 1. Minor wording change to the doc/README.SIEVE file.
2139
139059f6 2140 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2141 computation of the current number of files was incorrect.
495ae4b0 2142
7086e875
PH
2143 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2144 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2145 place.
2146
35af9f61
PH
2147 4. Give more explanation in the error message when the command for a transport
2148 filter fails to execute.
2149
b668c215
PH
2150 5. There are several places where Exim runs a non-Exim command in a
2151 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2152 was being done only for the command run by the queryprogram router. It is
2153 now done for all such subprocesses. The other cases are: ${run, transport
2154 filters, and the commands run by the lmtp and pipe transports.
2155
a494b1e1
PH
2156 6. Added CONFIGURE_GROUP build-time option.
2157
2158 7. Some older OS have a limit of 256 on the maximum number of file
2159 descriptors. Exim was using setrlimit() to set 1000 as a large value
2160 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2161 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2162
c5fcb476
PH
2163 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2164 was an oversight, and furthermore, ever since the addition of extra
2165 controls (e.g. 4.43/32), the checks on when to allow different forms of
2166 "control" were broken. There should now be diagnostics for all cases when a
2167 control that does not make sense is encountered.
2168
69358f02
PH
2169 9. Added the /retain_sender option to "control=submission".
2170
5be20824
PH
217110. $recipients is now available in the predata ACL (oversight).
2172
eb2c0248
PH
217311. Tidy the search cache before the fork to do a delivery from a message
2174 received from the command line. Otherwise the child will trigger a lookup
2175 failure and thereby defer the delivery if it tries to use (for example) a
2176 cached ldap connection that the parent has called unbind on.
2177
2a3eea10
PH
217812. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2179 of $address_data from the recipient verification was clobbered by the
2180 sender verification.
2181
218213. The value of address_data from a sender verification is now available in
2183 $sender_address_data in subsequent conditions in the ACL statement.
2184
23c7ff99
PH
218514. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2186
4deaf07d
PH
218715. Added a new option "connect=<time>" to callout options, to set a different
2188 connection timeout.
2189
926e1192
PH
219016. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2191 was its contents. (It was OK if the option was not defined at all.)
2192
650edc6f
PH
219317. A "Completed" log line is now written for messages that are removed from
2194 the spool by the -Mrm option.
2195
2c7db3f5
PH
219618. New variables $sender_verify_failure and $recipient_verify_failure contain
2197 information about exactly what failed.
2198
3d235903
PH
219919. Added -dd to debug only the daemon process.
2200
7c7ad977
PH
220120. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2202 handles timeouts, both on the server side and network timeouts. Renamed the
2203 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2204
981756db
PH
220521. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2206 It is now set to "smtps".
2207
d4eb88df
PH
220822. $host_address is now set to the target address during the checking of
2209 ignore_target_hosts.
2210
221123. When checking ignore_target_hosts for an ipliteral router, no host name was
2212 being passed; this would have caused $sender_host_name to have been used if
2213 matching the list had actually called for a host name (not very likely,
2214 since this list is usually IP addresses). A host name is now passed as
2215 "[x.x.x.x]".
2216
7d468ab8
PH
221724. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2218 code that specifies a non-restarting handler (typically sigaction() in
2219 modern systems) in an attempt to fix a rare and obscure crash bug.
2220
222125. Narrowed the window for a race in the daemon that could cause it to ignore
2222 SIGCHLD signals. This is not a major problem, because they are used only to
2223 wake it up if nothing else does.
2224
62c0818f
PH
222526. A malformed maildirsize file could cause Exim to calculate negative values
2226 for the mailbox size or file count. Odd effects could occur as a result.
2227 The maildirsize information is now recalculated if the size or filecount
2228 end up negative.
2229
26034054
PH
223027. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2231 support for a long time. Removed HAVE_SYS_VFS_H.
2232
af66f652
PH
223328. Installed the latest version of exipick from John Jetmore.
2234
90af77f4
PH
223529. In an address list, if the pattern was not a regular expression, an empty
2236 subject address (from a bounce message) matched only if the pattern was an
2237 empty string. Non-empty patterns were not even tested. This was the wrong
2238 because it is perfectly reasonable to use an empty address as part of a
2239 database query. An empty address is now tested by patterns that are
2240 lookups. However, all the other forms of pattern expect the subject to
2241 contain a local part and a domain, and therefore, for them, an empty
2242 address still always fails if the pattern is not itself empty.
2243
d8ef3577
PH
224430. Exim went into a mad DNS loop when attempting to do a callout where the
2245 host was specified on an smtp transport, and looking it up yielded more
2246 than one IP address.
2247
5cb8cbc6
PH
224831. Re-factored the code for checking spool and log partition space into a
2249 function that finds that data and another that does the check. The former
2250 is then used to implement four new variables: $spool_space, $log_space,
2251 $spool_inodes, and $log_inodes.
2252
14702f5b
PH
225332. The RFC2047 encoding function was originally intended for short strings
2254 such as real names; it was not keeping to the 75-character limit for
2255 encoded words that the RFC imposes. It now respects the limit, and
2256 generates multiple encoded words if necessary. To be on the safe side, I
2257 have increased the buffer size for the ${rfc2047: expansion operator from
2258 1024 to 2048 bytes.
2259
063b1e99
PH
226033. It is now permitted to omit both strings after an "if" condition; if the
2261 condition is true, the result is "true". As before, when the second string
2262 is omitted, a false condition yields an empty string. This makes it less
2263 cumbersome to write custom ACL and router conditions.
2264
652e1b65
PH
226534. Failure to deliver a bounce message always caused it to be frozen, even if
2266 there was an errors_to setting on the router. The errors_to setting is now
2267 respected.
2268
6f0c9a4f
PH
226935. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2270 canonical form (fully expanded) before being placed in
2271 $sender_host_address.
2272
33397d19
PH
227336. The table in the code that translates DNS record types into text (T_A to
2274 "A" for instance) was missing entries for NS and CNAME. It is just possible
2275 that this could have caused confusion if both these types were looked up
2276 for the same domain, because the text type is used as part of Exim's
2277 per-process caching. But the chance of anyone hitting this buglet seems
2278 very small.
2279
7bb56e1f
PH
228037. The dnsdb lookup has been extended in a number of ways.
2281
2282 (1) There is a new type, "zns", which walks up the domain tree until it
2283 finds some nameserver records. It should be used with care.
2284
ea3bc19b
PH
2285 (2) There is a new type, "mxh", which is like "mx" except that it returns
2286 just the host names, not the priorities.
2287
2288 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2289 looked up. The behaviour when one of the lookups defers can be
2290 controlled by a keyword.
7bb56e1f 2291
ea3bc19b 2292 (4) It is now possible to specify the separator character for use when
7bb56e1f 2293 multiple records are returned.
33397d19 2294
0bcb2a0e
PH
229538. The dnslists ACL condition has been extended: it is now possible to supply
2296 a list of IP addresses and/or domains to be looked up in a particular DNS
2297 domain.
2298
2ac0e484
PH
229939. Added log_selector=+queue_time_overall.
2300
4e1fde53
PH
230140. When running the queue in the test harness, wait just a tad after forking a
2302 delivery process, to get repeatability of debugging output.
2303
de365ded
PH
230441. Include certificate and key file names in error message when GnuTLS fails
2305 to set them up, because the GnuTLS error message doesn't include the name
2306 of the failing file when there is a problem reading it.
2307
f05da2e8
PH
230842. Allow both -bf and -bF in the same test run.
2309
d6453af2
PH
231043. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2311
f7b63901
PH
231244. The "Exiscan patch" is now merged into the mainline Exim source.
2313
231445. Sometimes the final signoff response after QUIT could fail to get
2315 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2316 < 0 before doing a fflush(). This bug looks as though it goes back to the
2317 introduction of TLS in release 3.20, but "sometimes" must have been rare
2318 because the tests only now provoked it.
2319
a444213a
PH
232046. Reset the locale to "C" after calling embedded Perl, in case it was changed
2321 (this can affect the format of dates).
2322
0ec020ea
PH
232347. exim_tidydb, when checking for the continued existence of a message for
2324 which it has found a message-specific retry record, was not finding
2325 messages that were in split spool directories. Consequently, it was
2326 deleting retry records that should have stayed in existence.
2327
b1206957
PH
232848. Steve fixed some bugs in eximstats.
2329
233049. The SPA authentication driver was not abandoning authentication and moving
2331 on to the next authenticator when an expansion was forced to fail,
2332 contradicting the general specification for all authenticators. Instead it
2333 was generating a temporary error. It now behaves as specified.
2334
26dd5a95
PH
233550. The default ordering of permitted cipher suites for GnuTLS was pessimal
2336 (the order specifies the preference for clients). The order is now AES256,
2337 AES128, 3DES, ARCFOUR128.
2338
343b2385
PH
233951. Small patch to Sieve code - explicitly set From: when generating an
2340 autoreply.
2341
1c5466b9
PH
234252. Exim crashed if a remote delivery caused a very long error message to be
2343 recorded - for instance if somebody sent an entire SpamAssassin report back
2344 as a large number of 550 error lines. This bug was coincidentally fixed by
2345 increasing the size of one of Exim's internal buffers (big_buffer) that
2346 happened as part of the Exiscan merge. However, to be on the safe side, I
2347 have made the code more robust (and fixed the comments that describe what
2348 is going on).
2349
55ee9ee3
PH
235053. Now that there can be additional text after "Completed" in log lines (if
2351 the queue_time_overall log selector is set), a one-byte patch to exigrep
2352 was needed to allow it to recognize "Completed" as not the last thing in
2353 the line.
2354
d38f8232
PH
235554. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2356 patch that reportedly fixes this has been added. I am not expert enough to
2357 create a test for it. This is what the patch creator wrote:
2358
2359 "I found a little strange behaviour of ldap code when working with
2360 Windows 2003 AD Domain, where users was placed in more than one
2361 Organization Units. When I tried to give exim partial DN, the exit code
2362 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2363 But simultaneously result of request was absolutely normal ldap result,
2364 so I produce this patch..."
2365
3295e65b
PH
2366 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2367 REFERENCE, so I have modified the code to exclude the patch when that macro
2368 is not defined.
2369
7102e136
PH
237055. Some experimental protocols are using DNS PTR records for new purposes. The
2371 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2372 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2373 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2374 CAN-2005-0021
7102e136 2375
3ca0ba97
PH
237656. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2377
c2bcbe20
PH
237857. Double the size of the debug message buffer (to 2048) so that more of very
2379 long debug lines gets shown.
2380
18ce445d
PH
238158. The exicyclog utility now does better if the number of log files to keep
2382 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2383
1f5b4c3d
PH
238459. Two changes related to the smtp_active_hostname option:
2385
2386 (1) $smtp_active_hostname is now available as a variable.
2387 (2) The default for smtp_banner uses $smtp_active_hostname instead
2388 of $primary_hostname.
2389
b975ba52
PH
239060. The host_aton() function is supposed to be passed a string that is known
2391 to be a valid IP address. However, in the case of IPv6 addresses, it was
2392 not checking this. This is a hostage to fortune. Exim now panics and dies
2393 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2394 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2395 components; fortuitously, this particular loophole had already been fixed
2396 by change 4.50/55 above.
2397
2398 If there are any other similar loopholes, the new check in host_aton()
2399 itself should stop them being exploited. The report I received stated that
2400 data on the command line could provoke the exploit when Exim was running as
2401 exim, but did not say which command line option was involved. All I could
2402 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2403 running as the user.
ea3a6f44 2404 CAN-2005-0021
85b87bc2
PH
2405
240661. There was a buffer overflow vulnerability in the SPA authentication code
2407 (which came originally from the Samba project). I have added a test to the
2408 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2409 CAN-2005-0022
b975ba52 2410
17ffcae7
PH
241162. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2412 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2413
d95f9fdb
PH
241463. The daemon start-up calls getloadavg() while still root for those OS that
2415 need the first call to be done as root, but it missed one case: when
2416 deliver_queue_load_max is set with deliver_drop_privilege. This is
2417 necessary for the benefit of the queue runner, because there is no re-exec
2418 when deliver_drop_privilege is set.
2419
86b8287f
PH
242064. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2421 This has been fixed.
2422
60dc5e56
PH
242365. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2424 was in use, was not putting the data itself into the right store pool;
2425 consequently, it could be overwritten for a subsequent message in the same
2426 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2427 the caching.)
2428
533244af
PH
242966. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2430
a5a28604
PH
243167. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2432 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2433 the function were treating the return as a boolean value, which happened to
2434 work because 0=false and not-0=true, but is not correct code.
2435
7e634d24
PH
243668. The host_aton() function was not handling scoped IPv6 addresses (those
2437 with, for example, "%eth0" on the end) correctly.
2438
3e11c26b
PH
243969. Fixed some compiler warnings in acl.c for the bitmaps specified with
2440 negated items (that is, ~something) in unsigned ints. Some compilers
2441 apparently mutter when there is no cast.
2442
6729cf78
PH
244370. If an address verification called from an ACL failed, and did not produce a
2444 user-specific message (i.e. there was only a "system" message), nothing was
2445 put in $acl_verify_message. In this situation, it now puts the system
2446 message there.
2447
00f00ca5
PH
244871. Change 4.23/11 added synchronization checking at the start of an SMTP
2449 session; change 4.31/43 added the unwanted input to the log line - except
2450 that it did not do this in the start of session case. It now does.
2451
c9bdd01c
PH
245272. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2453 This is wrong and can cause the other end to generate a synchronization
2454 error if it is another Exim or anything else that does the synchronization
2455 check. A QUIT command is no longer sent after a timeout.
2456
d43194df
PH
245773. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2458 during host lookups.
2459
fe5b5d0b
PH
246074. The defer_ok option of callout verification was not working if it was used
2461 when verifying addresses in header lines, that is, for this case:
2462
2463 verify = header_sender/callout=defer_ok
2464
76a2d7ba
PH
246575. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2466 those file descriptors could be used for SMTP connections. If anything
2467 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2468 could be sent to the SMTP client, causing chaos. The daemon now opens
2469 stdin, stdout, and stderr to /dev/null when it puts itself into the
2470 background.
2471
247276. Arrange for output from Perl's "warn" command to be written to Exim's main
2473 log by default. The user can override this with suitable Perl magic.
2474
04f7d5b9
PH
247577. The use of log_message on a "discard" ACL verb, which is supposed to add to
2476 the log message when discard triggers, was not working for the DATA ACL or
2477 for the non-SMTP ACL.
2478
bc60667e
PH
247978. Error message wording change in sieve.c.
2480
bb6e88ff
PH
248179. If smtp_accept_max_per_host was set, the number of connections could be
2482 restricted to fewer than expected, because the daemon was trying to set up
2483 a new connection before checking whether the processes handling previous
2484 connections had finished. The check for completed processes is now done
2485 earlier. On busy systems, this bug wouldn't be noticed because something
2486 else would have woken the daemon, and it would have reaped the completed
2487 process earlier.
2488
1e70f85b
PH
248980. If a message was submitted locally by a user whose login name contained one
2490 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2491 It caused a spool format error. I have fixed the spool reading code. A
2492 related problem was that the "from" clause in the Received: line became
2493 illegal because of the space(s). It is now covered by ${quote_local_part.
2494
249581. Included the latest eximstats from Steve (adds average sizes to HTML Top
2496 tables).
2497
4e01f9d6
PH
249882. Updated OS/Makefile-AIX as per message from Mike Meredith.
2499
1ee1cef2
PH
250083. Patch from Sieve maintainer to fix unterminated string problem in
2501 "vacation" handling.
2502
6e2b4ccc
PH
250384. Some minor changes to the Linux configuration files to help with other
2504 OS variants using glibc.
2505
8e669ac1
PH
250685. One more patch for Sieve to update vacation handling to latest spec.
2507
495ae4b0 2508
bbe902f0
PH
2509----------------------------------------------------
2510See the note above about the 4.44 and 4.50 releases.
2511----------------------------------------------------
2512
2513
2514Exim version 4.44
2515-----------------
2516
2517 1. Change 4.43/35 introduced a bug that caused file counts to be
2518 incorrectly computed when quota_filecount was set in an appendfile
2519 transport
2520
2521 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2522 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2523 place.
2524
2525 3. Give more explanation in the error message when the command for a transport
2526 filter fails to execute.
2527
2528 4. There are several places where Exim runs a non-Exim command in a
2529 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2530 was being done only for the command run by the queryprogram router. It is
2531 now done for all such subprocesses. The other cases are: ${run, transport
2532 filters, and the commands run by the lmtp and pipe transports.
2533
2534 5. Some older OS have a limit of 256 on the maximum number of file
2535 descriptors. Exim was using setrlimit() to set 1000 as a large value
2536 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2537 systems. I've change it so that if it can't get 1000, it tries for 256.
2538
2539 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2540 was an oversight, and furthermore, ever since the addition of extra
2541 controls (e.g. 4.43/32), the checks on when to allow different forms of
2542 "control" were broken. There should now be diagnostics for all cases when a
2543 control that does not make sense is encountered.
2544
2545 7. $recipients is now available in the predata ACL (oversight).
2546
2547 8. Tidy the search cache before the fork to do a delivery from a message
2548 received from the command line. Otherwise the child will trigger a lookup
2549 failure and thereby defer the delivery if it tries to use (for example) a
2550 cached ldap connection that the parent has called unbind on.
2551
2552 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2553 of $address_data from the recipient verification was clobbered by the
2554 sender verification.
2555
255610. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2557 was its contents. (It was OK if the option was not defined at all.)
2558
255911. A "Completed" log line is now written for messages that are removed from
2560 the spool by the -Mrm option.
2561
256212. $host_address is now set to the target address during the checking of
2563 ignore_target_hosts.
2564
256513. When checking ignore_target_hosts for an ipliteral router, no host name was
2566 being passed; this would have caused $sender_host_name to have been used if
2567 matching the list had actually called for a host name (not very likely,
2568 since this list is usually IP addresses). A host name is now passed as
2569 "[x.x.x.x]".
2570
257114. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2572 code that specifies a non-restarting handler (typically sigaction() in
2573 modern systems) in an attempt to fix a rare and obscure crash bug.
2574
257515. Narrowed the window for a race in the daemon that could cause it to ignore
2576 SIGCHLD signals. This is not a major problem, because they are used only to
2577 wake it up if nothing else does.
2578
257916. A malformed maildirsize file could cause Exim to calculate negative values
2580 for the mailbox size or file count. Odd effects could occur as a result.
2581 The maildirsize information is now recalculated if the size or filecount
2582 end up negative.
2583
258417. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2585 support for a long time. Removed HAVE_SYS_VFS_H.
2586
ea3a6f44 258718. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2588
258919. Allow an empty sender to be matched against a lookup in an address list.
2590 Previously the only cases considered were a regular expression, or an
2591 empty pattern.
2592
259320. Exim went into a mad DNS lookup loop when doing a callout where the
2594 host was specified on the transport, if the DNS lookup yielded more than
2595 one IP address.
2596
ea3a6f44
NM
259721. The RFC2047 encoding function was originally intended for short strings
2598 such as real names; it was not keeping to the 75-character limit for
2599 encoded words that the RFC imposes. It now respects the limit, and
2600 generates multiple encoded words if necessary. To be on the safe side, I
2601 have increased the buffer size for the ${rfc2047: expansion operator from
2602 1024 to 2048 bytes.
bbe902f0 2603
ea3a6f44
NM
260422. Failure to deliver a bounce message always caused it to be frozen, even if
2605 there was an errors_to setting on the router. The errors_to setting is now
2606 respected.
bbe902f0
PH
2607
260823. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2609 canonical form (fully expanded) before being placed in
2610 $sender_host_address.
2611
261224. Updated eximstats to version 1.33
2613
ea3a6f44
NM
261425. Include certificate and key file names in error message when GnuTLS fails
2615 to set them up, because the GnuTLS error message doesn't include the name
2616 of the failing file when there is a problem reading it.
bbe902f0
PH
2617
261826. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2619 As per change 25.
bbe902f0 2620
ea3a6f44
NM
262127. Reset the locale to "C" after calling embedded Perl, in case it was changed
2622 (this can affect the format of dates).
bbe902f0 2623
ea3a6f44
NM
262428. exim_tidydb, when checking for the continued existence of a message for
2625 which it has found a message-specific retry record, was not finding
2626 messages that were in split spool directories. Consequently, it was
2627 deleting retry records that should have stayed in existence.
bbe902f0
PH
2628
262929. eximstats updated to version 1.35
2630 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2631 1.35 - bugfix such that pie charts by volume are generated correctly
2632
ea3a6f44
NM
263330. The SPA authentication driver was not abandoning authentication and moving
2634 on to the next authenticator when an expansion was forced to fail,
2635 contradicting the general specification for all authenticators. Instead it
2636 was generating a temporary error. It now behaves as specified.
bbe902f0 2637
ea3a6f44
NM
263831. The default ordering of permitted cipher suites for GnuTLS was pessimal
2639 (the order specifies the preference for clients). The order is now AES256,
2640 AES128, 3DES, ARCFOUR128.
bbe902f0 2641
ea3a6f44
NM
264231. Small patch to Sieve code - explicitly set From: when generating an
2643 autoreply.
bbe902f0 2644
ea3a6f44
NM
264532. Exim crashed if a remote delivery caused a very long error message to be
2646 recorded - for instance if somebody sent an entire SpamAssassin report back
2647 as a large number of 550 error lines. This bug was coincidentally fixed by
2648 increasing the size of one of Exim's internal buffers (big_buffer) that
2649 happened as part of the Exiscan merge. However, to be on the safe side, I
2650 have made the code more robust (and fixed the comments that describe what
2651 is going on).
bbe902f0 2652
ea3a6f44
NM
265333. Some experimental protocols are using DNS PTR records for new purposes. The
2654 keys for these records are domain names, not reversed IP addresses. The
2655 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2656 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2657 CAN-2005-0021
2658
ea3a6f44
NM
265934. The host_aton() function is supposed to be passed a string that is known
2660 to be a valid IP address. However, in the case of IPv6 addresses, it was
2661 not checking this. This is a hostage to fortune. Exim now panics and dies
2662 if the condition is not met. A case was found where this could be provoked
2663 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2664 components; fortuitously, this particular loophole had already been fixed
2665 by change 4.50/55 or 4.44/33 above.
2666
2667 If there are any other similar loopholes, the new check in host_aton()
2668 itself should stop them being exploited. The report I received stated that
2669 data on the command line could provoke the exploit when Exim was running as
2670 exim, but did not say which command line option was involved. All I could
2671 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2672 running as the user.
bbe902f0
PH
2673 CAN-2005-0021
2674
ea3a6f44
NM
267535. There was a buffer overflow vulnerability in the SPA authentication code
2676 (which came originally from the Samba project). I have added a test to the
2677 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2678 CAN-2005-0022
2679
ea3a6f44
NM
268036. The daemon start-up calls getloadavg() while still root for those OS that
2681 need the first call to be done as root, but it missed one case: when
2682 deliver_queue_load_max is set with deliver_drop_privilege. This is
2683 necessary for the benefit of the queue runner, because there is no re-exec
2684 when deliver_drop_privilege is set.
bbe902f0 2685
ea3a6f44
NM
268637. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2687 was in use, was not putting the data itself into the right store pool;
2688 consequently, it could be overwritten for a subsequent message in the same
2689 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2690 the caching.)
bbe902f0 2691
ea3a6f44
NM
269238. Sometimes the final signoff response after QUIT could fail to get
2693 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2694 < 0 before doing a fflush(). This bug looks as though it goes back to the
2695 introduction of TLS in release 3.20, but "sometimes" must have been rare
2696 because the tests only now provoked it.
bbe902f0
PH
2697
2698
495ae4b0
PH
2699Exim version 4.43
2700-----------------
2701
2702 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2703 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2704 Now it returns an integer. A number of calls were still expecting a T/F
2705 return. Fortuitously, in all cases, the tests worked in OK situations,
2706 which is the norm. However, things would have gone wrong on any write
2707 failures on the smtp file descriptor. This function is used when sending
2708 messages over SMTP and also when doing verify callouts.
2709
2710 2. When Exim is called to do synchronous delivery of a locally submitted
2711 message (the -odf or -odi options), it no longer closes stderr before doing
2712 the delivery.
2713
2714 3. Implemented the mua_wrapper option.
2715
2716 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2717
2718 5. Implemented the functions header_remove(), header_testname(),
2719 header_add_at_position(), and receive_remove_recipient(), and exported them
2720 to local_scan().
2721
2722 6. If an ACL "warn" statement specified the addition of headers, Exim already
2723 inserted X-ACL-Warn: at the start if there was no header name. However, it
2724 was not making this test for the second and subsequent header lines if
2725 there were newlines in the string. This meant that an invalid header could
2726 be inserted if Exim was badly configured.
2727
2728 7. Allow an ACL "warn" statement to add header lines at the start or after all
2729 the Received: headers, as well as at the end.
2730
2731 8. Added the rcpt_4xx retry error code.
2732
2733 9. Added postmaster_mailfrom=xxx to callout verification option.
2734
273510. Added mailfrom=xxxx to the callout verification option, for verify=
2736 header_sender only.
2737
273811. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2739 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2740
274112. Inserted some casts to stop certain compilers warning when using pointer
2742 differences as field lengths or precisions in printf-type calls (mostly
2743 affecting debugging statements).
2744
274513. Added optional readline() support for -be (dynamically loaded).
2746
274714. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2748 same clock tick as a message's arrival, so that its received time was the
2749 same as the "first fail" time on the retry record, and that message
2750 remained on the queue past the ultimate address timeout, every queue runner
2751 would try a delivery (because it was past the ultimate address timeout) but
2752 after another failure, the ultimate address timeout, which should have then
2753 bounced the address, did not kick in. This was a "< instead of <=" error;
2754 in most cases the first failure would have been in the next clock tick
2755 after the received time, and all would be well.
2756
275715. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2758 being recognized when the domain list was tested by the match_domain
2759 condition in an expansion string.
2760
276116. Added the ${str2b64: operator.
2762
276317. Exim was always calling setrlimit() to set a large limit for the number of
2764 processes, without checking whether the existing limit was already
2765 adequate. (It did check for the limit on file descriptors.) Furthermore,
2766 errors from getrlimit() and setrlimit() were being ignored. Now they are
2767 logged to the main and panic logs, but Exim does carry on, to try to do its
2768 job under whatever limits there are.
2769
277018. Imported PCRE 5.0.
2771
277219. Trivial typo in log message " temporarily refused connection" (the leading
2773 space).
2774
277520. If the log selector return_path_on_delivery was set and an address was
2776 redirected to /dev/null, the delivery process crashed because it assumed
2777 that a return path would always be set for a "successful" delivery. In this
2778 case, the whole delivery is bypassed as an optimization, and therefore no
2779 return path is set.
2780
278121. Internal re-arrangement: the function for sending a challenge and reading
2782 a response while authentication was assuming a zero-terminated challenge
2783 string. It's now changed to take a pointer and a length, to allow for
2784 binary data in such strings.
2785
278622. Added the cyrus_sasl authenticator (code supplied by MBM).
2787
278823. Exim was not respecting finduser_retries when seeking the login of the
2789 uid under which it was called; it was always trying 10 times. (The default
2790 setting of finduser_retries is zero.) Also, it was sleeping after the final
2791 failure, which is pointless.
2792
279324. Implemented tls_on_connect_ports.
2794
279525. Implemented acl_smtp_predata.
2796
279726. If the domain in control=submission is set empty, Exim assumes that the
2798 authenticated id is a complete email address when it generates From: or
2799 Sender: header lines.
2800
280127. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2802 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2803 chown and chgrp in /bin and hostname in /usr/bin.
2804
280528. Exim was keeping the "process log" file open after each use, just as it
2806 does for the main log. This opens the possibility of it remaining open for
2807 long periods when the USR1 signal hits a daemon. Occasional processlog
2808 errors were reported, that could have been caused by this. Anyway, it seems
2809 much more sensible not to leave this file open at all, so that is what now
2810 happens.
2811
281229. The long-running daemon process does not normally write to the log once it
2813 has entered its main loop, and it closes the log before doing so. This is
2814 so that log files can straightforwardly be renamed and moved. However,
2815 there are a couple of unusual error situations where the daemon does write
2816 log entries, and I had neglected to close the log afterwards.
2817
281830. The text of an SMTP error response that was received during a remote
2819 delivery was being truncated at 512 bytes. This is too short for some of
2820 the long messages that one sometimes sees. I've increased the limit to
2821 1024.
2822
282331. It is now possible to make retry rules that apply only when a message has a
2824 specific sender, in particular, an empty sender.
2825
282632. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2827 it possible to be selective about when SMTP synchronization is enforced.
2828
282933. Added "control = caseful_local_part" and "control = "caselower_local_part".
2830
283132. Implemented hosts_connection_nolog.
2832
283333. Added an ACL for QUIT.
2834
283534. Setting "delay_warning=" to disable warnings was not working; it gave a
2836 syntax error.
2837
283835. Added mailbox_size and mailbox_filecount to appendfile.
2839
284036. Added control = no_multiline_responses to ACLs.
2841
284237. There was a bug in the logic of the code that waits for the clock to tick
2843 in the case where the clock went backwards by a substantial amount such
2844 that the microsecond fraction of "now" was more than the microsecond
2845 fraction of "then" (but the whole seconds number was less).
2846
284738. Added support for the libradius Radius client library this is found on
2848 FreeBSD (previously only the radiusclient library was supported).
2849
2850
2851Exim version 4.42
2852-----------------
2853
2854 1. When certain lookups returned multiple values in the form name=value, the
2855 quoting of the values was not always being done properly. Specifically:
2856 (a) If the value started with a double quote, but contained no whitespace,
2857 it was not quoted.
2858 (b) If the value contained whitespace other than a space character (i.e.
2859 tabs or newlines or carriage returns) it was not quoted.
2860 This fix has been applied to the mysql and pgsql lookups by writing a
2861 separate quoting function and calling it from the lookup code. The fix
2862 should probably also be applied to nisplus, ibase and oracle lookups, but
2863 since I cannot test any of those, I have not disturbed their existing code.
2864
2865 2. A hit in the callout cache for a specific address caused a log line with no
2866 reason for rejecting RCPT. Now it says "Previous (cached) callout
2867 verification failure".
2868
2869 3. There was an off-by-one bug in the queryprogram router. An over-long
2870 return line was truncated at 256 instead of 255 characters, thereby
2871 overflowing its buffer with the terminating zero. As well as fixing this, I
2872 have increased the buffer size to 1024 (and made a note to document this).
2873
2874 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2875 when Exim is waiting for an SMTP response from a remote server, Exim
2876 restarts its select() call on the socket, thereby resetting its timeout.
2877 This is not a problem when such interrupts are rare. Somebody set up a cron
2878 job to run exiwhat every 2 minutes, which is less than the normal select()
2879 timeout (5 or 10 minutes). This meant that the select() timeout never
2880 kicked in because it was always reset. I have fixed this by comparing the
2881 time when an interrupt arrives with the time at the start of the first call
2882 to select(). If more time than the timeout has elapsed, the interrupt is
2883 treated as a timeout.
2884
2885 5. Some internal re-factoring in preparation for the addition of Sieve
2886 extensions (by MH). In particular, the "personal" test is moved to a
2887 separate function, and given an option for scanning Cc: and Bcc: (which is
2888 not set for Exim filters).
2889
2890 6. When Exim created an email address using the login of the caller as the
2891 local part (e.g. when creating a From: or Sender: header line), it was not
2892 quoting the local part when it contained special characters such as @.
2893
2894 7. Installed new OpenBSD configuration files.
2895
2896 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2897 try to make them clearer.
2898
2899 9. Callout options, other than the timeout value, were being ignored when
2900 verifying sender addresses in header lines. For example, when using
2901
2902 verify = header_sender/callout=no_cache
2903
2904 the cache was (incorrectly) being used.
2905
290610. Added a missing instance of ${EXE} to the exim_install script; this affects
2907 only the Cygwin environment.
2908
290911. When return_path_on_delivery was set as a log selector, if different remote
2910 addresses in the same message used different return paths and parallel
2911 remote delivery occurred, the wrong values would sometimes be logged.
2912 (Whenever a remote delivery process finished, the return path value from
2913 the most recently started remote delivery process was logged.)
2914
291512. RFC 3848 specifies standard names for the "with" phrase in Received: header
2916 lines when AUTH and/or TLS are in use. This is the "received protocol"
2917 field. Exim used to use "asmtp" for authenticated SMTP, without any
2918 indication (in the protocol name) for TLS use. Now it follows the RFC and
2919 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2920 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2921 names appear in log lines as well as in Received: header lines.
2922
292313. Installed MH's patches for Sieve to add the "copy" and "vacation"
2924 extensions, and comparison tests, and to fix some bugs.
2925
292614. Changes to the "personal" filter test:
2927
2928 (1) The test was buggy in that it was just doing the equivalent of
2929 "contains" tests on header lines. For example, if a user's address was
2930 anne@some.where, the "personal" test would incorrectly be true for
2931
2932 To: susanne@some.where
2933
2934 This test is now done by extracting each address from the header in turn,
2935 and checking the entire address. Other tests that are part of "personal"
2936 are now done using regular expressions (for example, to check local parts
2937 of addresses in From: header lines).
2938
2939 (2) The list of non-personal local parts in From: addresses has been
2940 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2941 taken from the Sieve specification recommendations.
2942
2943 (3) If the message contains any header line starting with "List-" it is
2944 treated as non-personal.
2945
2946 (4) The test for "circular" in the Subject: header line has been removed
2947 because it now seems ill-conceived.
2948
294915. Minor typos in src/EDITME comments corrected.
2950
295116. Installed latest exipick from John Jetmore.
2952
295317. If headers_add on a router specified a text string that was too long for
2954 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2955 of string_sprintf() is now avoided.
2956
295718. $message_body_size was not set (it was always zero) when running the DATA
2958 ACL and the local_scan() function.
2959
296019. For the "mail" command in an Exim filter, no default was being set for
2961 the once_repeat time, causing a random time value to be used if "once" was
2962 specified. (If the value happened to be <= 0, no repeat happened.) The
2963 default is now 0s, meaning "never repeat". The "vacation" command was OK
2964 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2965 (I found it when inspecting the code).
2966
296720. There is now an overall timeout for performing a callout verification. It
2968 defaults to 4 times the callout timeout, which applies to individual SMTP
2969 commands during the callout. The overall timeout applies when there is more
2970 than one host that can be tried. The timeout is checked before trying the
2971 next host. This prevents very long delays if there are a large number of
2972 hosts and all are timing out (e.g. when the network connections are timing
2973 out). The value of the overall timeout can be changed by specifying an
2974 additional sub-option for "callout", called "maxwait". For example:
2975
2976 verify = sender/callout=5s,maxwait=20s
2977
297821. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2979 to the end before writing, but this should make it even safer).
2980
298122. Exim was forgetting that it had advertised PIPELINING for the second and
2982 subsequent messages on an SMTP connection. It was also not resetting its
2983 memory on STARTTLS and an internal HELO.
2984
298523. When Exim logs an SMTP synchronization error within a session, it now
2986 records whether PIPELINING has been advertised or not.
2987
298824. Added 3 instances of "(long int)" casts to time_t variables that were being
2989 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2990 rather than long int.
2991
299225. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2993
299426. Added the never_mail option to autoreply.
2995
2996
2997Exim version 4.41
2998-----------------
2999
3000 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3001 crash if the getsockname() call failed; this can happen if a connection is
3002 closed very soon after it is established. The problem was simply in the
3003 order in which certain operations were done, causing Exim to try to write
3004 to the SMTP stream before it had set up the file descriptor. The bug has
3005 been fixed by making things happen in the correct order.
3006
3007
3008Exim version 4.40
3009-----------------
3010
3011 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3012 before the connection was closed, thus losing the rejection response.
3013
3014 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3015 some early Solaris releases, but causes trouble in current releases where
3016 socklen_t is defined.
3017
3018 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3019 always exist.
3020
3021 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3022 configured.
3023
3024 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3025 that releasing the top of it at the end releases what was used for sub-
3026 expansions (unless the block got too big). However, discard this block if
3027 the first thing is a variable or header, so that we can use its block when
3028 it is dynamic (useful for very large $message_headers, for example).
3029
3030 6. Lookups now cache *every* query, not just the most recent. A new, separate
3031 store pool is used for this. It can be recovered when all lookup caches are
3032 flushed. Lookups now release memory at the end of their result strings.
3033 This has involved some general refactoring of the lookup sources.
3034
3035 7. Some code has been added to the store_xxx() functions to reduce the amount
3036 of flapping under certain conditions.
3037
3038 8. log_incoming_interface used to affect only the <= reception log lines. Now
3039 it causes the local interface and port to be added to several more SMTP log
3040 lines, for example "SMTP connection from", and rejection lines.
3041
3042 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3043
304410. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3045
304611. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3047 could be overwritten at the end of the current message (or the start of a
3048 new message if it was set in a HELO ACL). The value is now preserved for
3049 the duration of the SMTP connection.
3050
305112. If a transport had a headers_rewrite setting, and a matching header line
3052 contained an unqualified address, that address was qualified, even if it
3053 did not match any rewriting rules. The underlying bug was that the values
3054 of the flags that permit the existence of unqualified sender and recipient
3055 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3056 non-local messages, and by -bnq for local messages) were not being
3057 preserved with the message after it was received.
3058
305913. When Exim was logging an SMTP synchronization error, it could sometimes log
3060 "next input=" as part of the text comprising the host identity instead of
3061 the correct text. The code was using the same buffer for two different
3062 strings. However, depending on which order the printing function evaluated
3063 its arguments, the bug did not always show up. Under Linux, for example, my
3064 test suite worked just fine.
3065
306614. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3067 doesn't work with some older versions of Perl. It has been changed to "my",
3068 which in any case is probably the better facility to use.
3069
307015. A really picky compiler found some instances of statements for creating
3071 error messages that either had too many or two few arguments for the format
3072 string.
3073
307416. The size of the buffer for calls to the DNS resolver has been increased
3075 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3076 for addresses that have a lot of PTR records. This alleviates a problem; it
3077 does not fully solve it.
3078
307917. A dnsdb lookup for PTR records that receives more data than will fit in the
3080 buffer now truncates the list and logs the incident, which is the same
3081 action as happens when Exim is looking up a host name and its aliases.
3082 Previously in this situation something unpredictable would happen;
3083 sometimes it was "internal error: store_reset failed".
3084
308518. If a server dropped the connection unexpectedly when an Exim client was
3086 using GnuTLS and trying to read a response, the client delivery process
3087 crashed while trying to generate an error log message.
3088
308919. If a "warn" verb in an ACL added multiple headers to a message in a single
3090 string, for example:
3091
3092 warn message = H1: something\nH2: something
3093
3094 the text was added as a single header line from Exim's point of view
3095 though it ended up OK in the delivered message. However, searching for the
3096 second and subsequent header lines using $h_h2: did not work. This has been
3097 fixed. Similarly, if a system filter added multiple headers in this way,
3098 the routers could not see them.
3099
310020. Expanded the error message when iplsearch is called with an invalid key to
3101 suggest using net-iplsearch in a host list.
3102
310321. When running tests using -bh, any delays imposed by "delay" modifiers in
3104 ACLs are no longer actually imposed (and a message to that effect is
3105 output).
3106
310722. If a "gecos" field in a passwd entry contained escaped characters, in
3108 particular, if it contained a \" sequence, Exim got it wrong when building
3109 a From: or a Sender: header from that name. A second bug also caused
3110 incorrect handling when an unquoted " was present following a character
3111 that needed quoting.
3112
311323. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3114 was not being matched caselessly.
3115
311624. Arranged for all hyphens in the exim.8 source to be escaped with
3117 backslashes.
3118
311925. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3120 properly. Recipient callout cache records were still being keyed to include
3121 the sender, even when use_sender was set false. This led to far more
3122 callouts that were necessary. The sender is no longer included in the key
3123 when use_sender is false.
3124
312526. Added "control = submission" modifier to ACLs.
3126
312727. Added the ${base62d: operator to decode base 62 numbers.
3128
312928. dnsdb lookups can now access SRV records.
3130
313129. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3132 the configuration file.
3133
313430. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3135 (-v) mode. This makes the output for a verbose queue run more intelligible.
3136
313731. Added a use_postmaster feature to recipient callouts.
3138
313932. Added the $body_zerocount variable, containing the number of binary zero
3140 bytes in the message body.
3141
314233. The time of last modification of the "new" subdirectory is now used as the
3143 "mailbox time last read" when there is a quota error for a maildir
3144 delivery.
3145
314634. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3147
314835. Added +ignore_unknown as a special item in host lists.
3149
315036. Code for decoding IPv6 addresses in host lists is now included, even if
3151 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3152 address was recognized as an IP address, but was then not correctly decoded
3153 into binary, causing unexpected and incorrect effects when compared with
3154 another IP address.
3155
3156
3157Exim version 4.34
3158-----------------
3159
3160 1. Very minor rewording of debugging text in manualroute to say "list of
3161 hosts" instead of "hostlist".
3162
3163 2. If verify=header_syntax was set, and a header line with an unqualified
3164 address (no domain) and a large number of spaces between the end of the
3165 name and the colon was received, the reception process suffered a buffer
3166 overflow, and (when I tested it) crashed. This was caused by some obsolete
3167 code that should have been removed. The fix is to remove it!
3168
3169 3. When running in the test harness, delay a bit after writing a bounce
3170 message to get a bit more predictability in the log output.
3171
3172 4. Added a call to search_tidyup() just before forking a reception process. In
3173 theory, someone could use a lookup in the expansion of smtp_accept_max_
3174 per_host which, without the tidyup, could leave open a database connection.
3175
3176 5. Added the variables $recipient_data and $sender_data which get set from a
3177 lookup success in an ACL "recipients" or "senders" condition, or a router
3178 "senders" option, similar to $domain_data and $local_part_data.
3179
3180 6. Moved the writing of debug_print from before to after the "senders" test
3181 for routers.
3182
3183 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3184 problems for message scanning, either using a data ACL, or using
3185 local_scan() because the Received: header was not generated till after they
3186 were called (in order to set the time as the time of reception completion).
3187 I have revised the way this works. The header is now generated after the
3188 body is received, but before the ACL or local_scan() are called. After they
3189 are run, the timestamp in the header is updated.
3190
3191
3192Exim version 4.33
3193-----------------
3194
3195 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3196 before starting a queue runner without re-exec. This happened only when
3197 deliver_drop_privilege was set or when the Exim user was set to root. The
3198 effect of the bug was that timeouts during subsequent deliveries caused
3199 crashes instead of being properly handled. The handler is now left at its
3200 default (and expected) setting.
3201
3202 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3203 message, again when deliver_drop_privilege is set or Exim is run as root.
3204 The bug described in (1) was not present in this case, but the tidying up
3205 of the other signals was missing. I have made the two cases consistent.
3206
3207 3. The ignore_target_hosts setting on a manualroute router was being ignored
3208 for hosts that were looked up using the /MX notation.
3209
3210 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3211 in domain lists.
3212
3213 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3214 operated on the sender address. After changing the $sender_address to <>
3215 for the sender address verify, Exim was re-instated it as the original
3216 (before rewriting) address, but remembering that it had rewritten it, so it
3217 wasn't rewriting it again. This bug also had the effect of breaking the
3218 sender address verification caching when the sender address was rewritten.
3219
3220 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3221 This has been changed so that if the ip literal address matches
3222 ignore_target_hosts, the router declines.
3223
3224 7. Added expansion conditions match_domain, match_address, and match_local_
3225 part (NOT match_host).
3226
3227 8. The placeholder for the Received: header didn't have a length field set.
3228
3229 9. Added code to Exim itself and to exim_lock to test for a specific race
3230 condition that could lead to file corruption when using MBX delivery. The
3231 issue is with the lockfile that is created in /tmp. If this file is removed
3232 after a process has opened it but before that process has acquired a lock,
3233 there is the potential for a second process to recreate the file and also
3234 acquire a lock. This could lead to two Exim processes writing to the file
3235 at the same time. The added code performs the same test as UW imapd; it
3236 checks after acquiring the lock that its file descriptor still refers to
3237 the same named file.
3238
323910. The buffer for building added header lines was of fixed size, 8192 bytes.
3240 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3241 when Exim is built.
3242
324311. Added the smtp_active_hostname option. If used, this will typically be made
3244 to depend on the incoming interface address. Because $interface_address is
3245 not set up until the daemon has forked a reception process, error responses
3246 that can happen earlier (such as "too many connections") no longer contain
3247 a host name.
3248
324912. If an expansion in a condition on a "warn" statement fails because a lookup
3250 defers, the "warn" statement is abandoned, and the next ACL statement is
3251 processed. Previously this caused the whole ACL to be aborted.
3252
325313. Added the iplsearch lookup type.
3254
325514. Added ident_timeout as a log selector.
3256
325715. Added tls_certificate_verified as a log selector.
3258
325916. Added a global option tls_require_ciphers (compare the smtp transport
3260 option of the same name). This controls incoming TLS connections.
3261
326217. I finally figured out how to make tls_require_ciphers do a similar thing
3263 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3264 before starting the TLS session.
3265
326618. Tabs are now shown as \t in -bP output.
3267
326819. If the log selector return_path_on_delivery was set, Exim crashed when
3269 bouncing a message because it had too many Received: header lines.
3270
327120. If two routers both had headers_remove settings, and the first one included
3272 a superfluous trailing colon, the final name in the first list and the
3273 first name in the second list were incorrectly joined into one item (with a
3274 colon in the middle).
3275
3276
3277Exim version 4.32
3278-----------------
3279
3280 1. Added -C and -D options to the exinext utility, mainly to make it easier
3281 to include in the automated testing, but these could be helpful when
3282 multiple configurations are in use.
3283
3284 2. The exinext utility was not formatting the output nicely when there was
3285 an alternate port involved in the retry record key, nor when there was a
3286 message id as well (for retries that were specific to a specific message
3287 and a specific host). It was also confused by IPv6 addresses, because of
3288 the additional colons they contain. I have fixed the IPv4 problem, and
3289 patched it up to do a reasonable job for IPv6.
3290
3291 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3292 delivery, the log line now contains "pipelined" if PIPELINING was used.
3293
3294 4. An SMTP transport process used to panic and die if the bind() call to set
3295 an explicit outgoing interface failed. This has been changed; it is now
3296 treated in the same way as a connect() failure.
3297
3298 5. A reference to $sender_host_name in the part of a conditional expansion
3299 that was being skipped was still causing a DNS lookup. This no longer
3300 occurs.
3301
3302 6. The def: expansion condition was not recognizing references to header lines
3303 that used bh_ and bheader_.
3304
3305 7. Added the _cache feature to named lists.
3306
3307 8. The code for checking quota_filecount in the appendfile transport was
3308 allowing one more file than it should have been.
3309
3310 9. For compatibility with Sendmail, the command line option
3311
3312 -prval:sval
3313
3314 is equivalent to
3315
3316 -oMr rval -oMs sval
3317
3318 and sets the incoming protocol and host name (for trusted callers). The
3319 host name and its colon can be omitted when only the protocol is to be set.
3320 Note the Exim already has two private options, -pd and -ps, that refer to
3321 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3322 "s", but I don't think that's a major issue.
3323
332410. A number of refactoring changes to the code, none of which should affect
3325 Exim's behaviour:
3326
3327 (a) The number of logging options was getting close to filling up the
3328 32-bit word that was used as a bit map. I have split them into two classes:
3329 those that are passed in the argument to log_write(), and those that are
3330 only ever tested independently outside of that function. These are now in
3331 separate 32-bit words, so there is plenty of room for expansion again.
3332 There is no change in the user interface or the logging behaviour.
3333
3334 (b) When building, for example, log lines, the code previously used a
3335 macro that called string_cat() twice, in order to add two strings. This is
3336 not really sufficiently general. Furthermore, there was one instance where
3337 it was actually wrong because one of the argument was used twice, and in
3338 one call a function was used. (As it happened, calling the function twice
3339 did not affect the overall behaviour.) The macro has been replaced by a
3340 function that can join an arbitrary number of extra strings onto a growing
3341 string.
3342
3343 (c) The code for expansion conditions now uses a table and a binary chop
3344 instead of a serial search (which was left over from when there were very
3345 few conditions). Also, it now recognizes conditions like "pam" even when
3346 the relevant support is not compiled in: a suitably worded error message is
3347 given if an attempt is made to use such a condition.
3348
334911. Added ${time_interval:xxxxx}.
3350
335112. A bug was causing one of the ddress fields not to be passed back correctly
3352 from remote delivery subprocesses. The field in question was not being
3353 subsequently used, so this caused to problems in practice.
3354
335513. Added new log selectors queue_time and deliver_time.
3356
335714. Might have fixed a bug in maildirsizefile handling that threw up
3358 "unexpected character" debug warnings, and recalculated the data
3359 unnecessarily. In any case, I expanded the warning message to give more
3360 information.
3361
336215. Added the message "Restricted characters in address" to the statements in
3363 the default ACL that block characters like @ and % in local parts.
3364
336516. Change 71 for release 4.31 proved to be much less benign that I imagined.
3366 Three changes have been made:
3367
3368 (a) There was a serious bug; a negative response to MAIL caused the whole
3369 recipient domain to be cached as invalid, thereby blocking all messages
3370 to all local parts at the same domain, from all senders. This bug has
3371 been fixed. The domain is no longer cached after a negative response to
3372 MAIL if the sender used is not empty.
3373
3374 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3375 been restored.
3376
3377 (c) A new callout option, "use_sender" has been added for people who want
3378 the modified behaviour.
3379
3380
3381Exim version 4.31
3382-----------------
3383
3384 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3385 Larry Rosenman.
3386
3387 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3388 indeed breaks things for older releases.
3389
3390 3. Added additional logging to the case where there is a problem reading data
3391 from a filter that is running in a subprocess using a pipe, in order to
3392 try to track down a specific problem.
3393
3394 4. Testing facility fudge: when running in the test harness and attempting
3395 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3396 getting "No route to host". Convert this to a timeout.
3397
3398 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3399 warning.
3400
3401 6. Some OS don't have socklen_t but use size_t instead. This affects the
3402 fifth argument of getsockopt() amongst other things. This is now
3403 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3404 can be set for individual OS. I have set it for SunOS5, OSF1, and
3405 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3406 some earlier ones do not.
3407
3408 7. Change 4.30/15 was not doing the test caselessly.
3409
3410 8. The standard form for an IPv6 address literal was being rejected by address
3411 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3412 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3413 this, as well as the form without the "IPv6" on the front (but only when
3414 address literals are enabled, of course).
3415
3416 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3417
341810. Exim crashed if a message with an empty sender address specified by -f
3419 encountered a router with an errors_to setting. This could be provoked only
3420 by a command such as
3421
3422 exim -f "" ...
3423
3424 where an empty string was supplied; "<>" did not hit this bug.
3425
342611. Installed PCRE release 4.5.
3427
342812. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3429 remained set. It is now erased.
3430
343113. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3432 times from message ids (which are base 36 rather than the normal 62).
3433
343414. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3435 were being counted as actual protocol errors, and logged if the log
3436 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3437 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3438 and DATA following a set of rejected RCPTs do not count as protocol errors.
3439 In other words, Exim assumes they were pipelined, though this may not
3440 actually be the case. Of course, in all cases the client gets an
3441 appropriate error code.
3442
344315. If a lookup fails in an ACL condition, a message about the failure may
3444 be available; it is used if testing the ACL cannot continue, because most
3445 such messages specify what the cause of the deferral is. However, some
3446 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3447 that caused an old message to be retained and used if a later statement
3448 caused a defer, replacing the real cause of the deferral.
3449
345016. If an IP address had so many PTR records that the DNS lookup buffer
3451 was not large enough to hold them, Exim could crash while trying to process
3452 the truncated data. It now detects and logs this case.
3453
345417. Further to 4.21/58, another change has been made: if (and only if) the
3455 first line of a message (the first header line) ends with CRLF, a bare LF
3456 in a subsequent header line has a space inserted after it, so as not to
3457 terminate the header.
3458
345918. Refactoring: tidied an ugly bit of code in appendfile that copied data
3460 unnecessarily, used atoi() instead of strtol(), and didn't check the
3461 termination when getting file sizes from file names by regex.
3462
346319. Completely re-implemented the support for maildirsize files, in the light
3464 of a number of problems with the previous contributed implementation
3465 (4.30/29). In particular:
3466
3467 . If the quota is zero, the maildirsize file is maintained, but no quota is
3468 imposed.
3469
3470 . If the maildir directory does not exist, it is created before any attempt
3471 to write a maildirsize file.
3472
3473 . The quota value in the file is just a cache; if the quota is changed in
3474 the transport, the new value overrides.
3475
3476 . A regular expression is available for excluding directories from the
3477 count.
3478
347920. The autoreply transport checks the characters in options that define the
3480 message's headers; it allows continued headers, but it was checking with
3481 isspace() after an embedded newline instead of explicitly looking for a
3482 space or a tab.
3483
348421. If all the "regular" hosts to which an address was routed had passed their
3485 expiry times, and had not reached their retry times, the address was
3486 bounced, even if fallback hosts were defined. Now Exim should go on to try
3487 the fallback hosts.
3488
348922. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3490 equivalent code in the SMTP transport. Some hosts send humungous responses
3491 to HELO/EHLO, more than 1024 it seems.
3492
349323. Refactoring: code in filter.c used (void *) for "any old type" but this
3494 gives compiler warnings in some environments. I've now done it "properly",
3495 using a union.
3496
349724. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3498 (because of problems with the built-in one) was declared to return uschar *
3499 instead of char *, causing compiler failure.
3500
350125. Fixed a file descriptor leak when processing alias/forward files.
3502
350326. Fixed a minor format string issue in dbfn.c.
3504
350527. Typo in exim.c: ("dmbnz" for "dbmnz").
3506
350728. If a filter file refered to $h_xxx or $message_headers, and the headers
3508 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3509 become corrupted.
3510
351129. When a sender address is verified, it is cached, to save repeating the test
3512 when there is more than one recipient in a message. However, when the
3513 verification involves a callout, it is possible for different callout
3514 options to be set for different recipients. It is too complicated to keep
3515 track of this in the cache, so now Exim always runs a verification when a
3516 callout is required, relying on the callout cache for the optimization.
3517 The overhead is duplication of the address routing, but this should not be
3518 too great.
3519
352030. Fixed a bug in callout caching. If a RCPT command caused the sender address
3521 to be verified with callout=postmaster, and the main callout worked but the
3522 postmaster check failed, the verification correctly failed. However, if a
3523 subsequent RCPT command asked for sender verification *without* the
3524 postmaster check, incorrect caching caused this verification also to fail,
3525 incorrectly.
3526
352731. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3528 it was not caching the DNS options (qualify_single, search_parents) that
3529 were used when the lookup failed. A subsequent lookup with different
3530 options therefore always gave the same answer, though there were cases
3531 where it should not have. (Example: a "domains = !$mx_any" option on a
3532 dnslookup router: the "domains" option is always processed without any
3533 widening, but the router might have qualify_single set.) Now Exim uses the
3534 cached value only when the same options are set.
3535
353632. Added John Jetmore's "exipick" utility to the distribution.
3537
353833. GnuTLS: When an attempt to start a TLS session fails for any reason other
3539 than a timeout (e.g. a certificate is required, and is not provided), an
3540 Exim server now closes the connection immediately. Previously it waited for
3541 the client to close - but if the client is SSL, it seems that they each
3542 wait for each other, leading to a delay before one of them times out.
3543
354434: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3545 maintained 0.8.x compatibility because I don't think many are using it, and
3546 it is clearly obsolete.
3547
354835. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3549 transport.
3550
355136. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3552 client certificate was expired. A simple patch fixes this, though I don't
3553 understand the full logic of why the verify callback is called multiple
3554 times.
3555
355637. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3557 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3558 which causes problems with some clients (such as the Certicom SSL Plus
3559 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3560 disables the coutermeasure allowing Eudora to connect."
3561
356238. Exim was not checking that a write() to a log file succeeded. This could
3563 lead to Bad Things if a log got too big, in particular if it hit a file
3564 size limit. Exim now panics and dies if it cannot write to a log file, just
3565 as it does if it cannot open a log file.
3566
356739. Modified OS/Makefile-Linux so that it now contains
3568
3569 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3570
3571 The two -D definitions ensure that Exim is compiled with large file
3572 support, which makes it possible to handle log files that are bigger than
3573 2^31.
3574