TK/02
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
ae276964 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.509 2007/05/17 19:58:48 tom Exp $
495ae4b0
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
eb4c0de6
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6Exim version 4.68
7-----------------
8
9PH/01 Another patch from the Sieve maintainer.
10
6a3bceb1
PH
11PH/02 When an IPv6 address is converted to a string for single-key lookup
12 in an address list (e.g. for an item such as "net24-dbm;/net/works"),
13 dots are used instead of colons so that keys in lsearch files need not
14 contain colons. This was done some time before quoting was made available
15 in lsearch files. However, iplsearch files do require colons in IPv6 keys
16 (notated using the quote facility) so as to distinguish them from IPv4
17 keys. This meant that lookups for IP addresses in host lists did not work
18 for iplsearch lookups.
19
20 This has been fixed by arranging for IPv6 addresses to be expressed with
21 colons if the lookup type is iplsearch. This is not incompatible, because
22 previously such lookups could never work.
23
24 The situation is now rather anomolous, since one *can* have colons in
25 ordinary lsearch keys. However, making the change in all cases is
26 incompatible and would probably break a number of configurations.
27
2e30fa9d
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28TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
29 version.
30
0806a9c5
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31MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
32 conversion specification without a maximum field width, thereby enabling
33 a rogue spamd server to cause a buffer overflow. While nobody in their
34 right mind would setup Exim to query an untrusted spamd server, an
35 attacker that gains access to a server running spamd could potentially
36 exploit this vulnerability to run arbitrary code as the Exim user.
37
ae276964
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38TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
39 $primary_hostname instead of what libspf2 thinks the hosts name is.
40
eb4c0de6 41
b4ed4da0
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42Exim version 4.67
43-----------------
44
22ad45c9
MH
45MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
46 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
47 Jan Srzednicki.
48
b4ed4da0
PH
49PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
50 issue a MAIL command.
51
431b7361
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52PH/02 In an ACL statement such as
53
54 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
55
56 if a client was not listed at all, or was listed with a value other than
57 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
58 the condition was not true (as it should be), so access was not denied.
59 The bug was that the ! inversion was incorrectly passed on to the second
60 item. This has been fixed.
61
62PH/03 Added additional dnslists conditions == and =& which are different from
63 = and & when the dns lookup returns more than one IP address.
64
83da1223
PH
65PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
66 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
67
54fc8428
PH
68PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
69 FSYNC, which compiles an option called disable_fsync that allows for
70 bypassing fsync(). The documentation is heavily laced with warnings.
71
34c5e8dd
SC
72SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
73
bbe15da8
PH
74PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
75 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
76 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
77 including adding "make clean"; (3) Added -fPIC when compiling the test
78 dynamically loaded module, to get rid of a warning.
79
0e8a9471
MH
80MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
81 message fails, move_frozen_messages = true and ignore_bounce_errors_after
82 = 0s. The bug is otherwise harmless.
83
f0872424
PH
84PH/07 There was a bug in the dovecot authenticator such that the value of
85 $auth1 could be overwritten, and so not correctly preserved, after a
86 successful authentication. This usually meant that the value preserved by
87 the server_setid option was incorrect.
88
b01dd148
PH
89PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
90
6bf342e1
PH
91PH/09 Installed PCRE release 7.0.
92
273f34d0
PH
93PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
94 run for batched SMTP input. It is now run at the start of every message
95 in the batch. While fixing this I discovered that the process information
96 (output by running exiwhat) was not always getting set for -bs and -bS
97 input. This is fixed, and it now also says "batched" for BSMTP.
98
cf8b11a5
PH
99PH/11 Added control=no_pipelining.
100
41c7c167
PH
101PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
102 patch, slightly modified), and move the expansion of helo_data till after
103 the connection is made in the smtp transport (so it can use these
104 values).
105
9c57cbc0
PH
106PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
107
f3f065bb
PH
108PH/14 Added log_selector = +pid.
109
047bdd8c
PH
110PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
111
0ce9abe6
PH
112PH/16 Add ${if forany and ${if forall.
113
0e22dfd1
PH
114PH/17 Added dsn_from option to vary the From: line in DSNs.
115
4c590bd1
PH
116PH/18 Flush SMTP output before performing a callout, unless control =
117 no_callout_flush is set.
118
09945f1e
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119PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
120 was true (the default) a successful delivery failed to delete the retry
121 item, thus causing premature timeout of the address. The bug is now
122 fixed.
123
c51b8e75
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124PH/20 Added hosts_avoid_pipelining to the smtp transport.
125
e28326d8
PH
126PH/21 Long custom messages for fakedefer and fakereject are now split up
127 into multiline reponses in the same way that messages for "deny" and
128 other ACL rejections are.
129
75b1493f
PH
130PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
131 with slight modification.
132
7c5214ec
PH
133PH/23 Applied sieve patches from the maintainer "tracking the latest notify
134 draft, changing the syntax and factoring some duplicate code".
135
4311097e
PH
136PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
137 for deliveries of the second and subsequent messages over the same SMTP
138 connection.
139
29f89cad
PH
140PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
141 ${reduce, with only minor "tidies".
142
5e687460
SC
143SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
144
c3611384
PH
145PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
146 expansion side effects.
147
5a11a7b4
PH
148PH/27 When a message times out after an over-quota error from an Exim-imposed
149 quota, the bounce message says "mailbox is full". This message was not
150 being given when it was a system quota that was exceeded. It now should
151 be the same.
152
0e20aff9
MH
153MH/03 Made $recipients available in local_scan(). local_scan() already has
154 better access to the recipient list through recipients_list[], but
155 $recipients can be useful in postmaster-provided expansion strings.
156
ca86f471
PH
157PH/28 The $smtp_command and $smtp_command_argument variables were not correct
158 in the case of a MAIL command with additional options following the
159 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
160 were accidentally chopped off.
161
a14e5636
PH
162PH/29 SMTP synchronization checks are implemented when a command is read -
163 there is a check that no more input is waiting when there shouldn't be
164 any. However, for some commands, a delay in an ACL can mean that it is
165 some time before the response is written. In this time, more input might
166 arrive, invalidly. So now there are extra checks after an ACL has run for
167 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
168 pipelining has not been advertised.
169
ec95d1a6
PH
170PH/30 MH's patch to allow iscntrl() characters to be list separators.
171
42855d71
PH
172PH/31 Unlike :fail:, a custom message specified with :defer: was not being
173 returned in the SMTP response when smtp_return_error_details was false.
174 This has been fixed.
175
57c2c631
PH
176PH/32 Change the Dovecot authenticator to use read() and write() on the socket
177 instead of the C I/O that was originally supplied, because problems were
178 reported on Solaris.
179
58c01c94
PH
180PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
181 Exim which did not show up earlier: it was assuming that a call to
182 SSL_CTX_set_info_callback() might give an error value. In fact, there is
183 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
184 was a macro that became an assignment, so it seemed to work. This has
185 changed to a proper function call with a void return, hence the compile
186 error. Exim's code has been fixed.
187
dee5a20a
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188PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
189 cpus.
190
d2ee6114
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191PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
192
b2d5182b
PH
193PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
194
79749a79
PH
195PH/37 If a message is not accepted after it has had an id assigned (e.g.
196 because it turns out to be too big or there is a timeout) there is no
3ce62588
PH
197 "Completed" line in the log. When some messages of this type were
198 selected by exigrep, they were listed as "not completed". Others were
199 picked up by some special patterns. I have improved the selection
200 criteria to be more general.
79749a79 201
c456d9bb
PH
202PH/38 The host_find_failed option in the manualroute router can now be set
203 to "ignore", to completely ignore a host whose IP address cannot be
204 found. If all hosts are ignored, the behaviour is controlled by the new
205 host_all_ignored option.
206
cd9868ec
PH
207PH/39 In a list of hosts for manualroute, if one item (either because of multi-
208 homing or because of multiple MX records with /mx) generated more than
209 one IP address, and the following item turned out to be the local host,
210 all the secondary addresses of the first item were incorrectly removed
211 from the list, along with the local host and any following hosts (which
212 is what is supposed to happen).
213
ebeaf996
PH
214PH/40 When Exim receives a message, it writes the login name, uid, and gid of
215 whoever called Exim into the -H file. In the case of the daemon it was
216 behaving confusingly. When first started, it used values for whoever
217 started the daemon, but after a SIGHUP it used the Exim user (because it
218 calls itself on a restart). I have changed the code so that it now always
219 uses the Exim user.
220
2679d413
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221PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
222 message are rejected with the same error (e.g. no authentication or bad
223 sender address), and a DATA command is nevertheless sent (as can happen
224 with PIPELINING or a stupid MUA), the error message that was given to the
225 RCPT commands is included in the rejection of the DATA command. This is
226 intended to be helpful for MUAs that show only the final error to their
227 users.
228
84024b72
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229PH/42 Another patch from the Sieve maintainer.
230
8005d38e
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231SC/02 Eximstats - Differentiate between permanent and temporary rejects.
232 Eximstats - Fixed some broken HTML links and added missing column headers
233 (Jez Hancock).
234 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
235 columns for Rejects, Temp Rejects, Ham, and Spam rows.
236
3298c6c6
SC
237SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
238
a43a27c5
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239PH/43 Yet another patch from the Sieve maintainer.
240
58eb016e 241PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
PH
242 the response to the final '.' that terminates a message, but only in the
243 case where the client has not sent further data following the '.'
244 (unfortunately, this is allowed). However, in many cases there won't be
245 any further data because there won't be any more messages to send. A call
246 to select() can be used: if it shows that the input is "ready", there is
247 either input waiting, or the socket has been closed. An attempt to read
248 the next input character can distinguish the two cases. Previously, Exim
58eb016e 249 would have sent an OK response which the client would never have see.
563b63fa
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250 This could lead to message repetition. This fix should cure that, at
251 least in a lot of common cases.
58eb016e 252
b43a74ea
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253PH/45 Do not advertise STARTTLS in response to HELP unless it would be
254 advertised in response to EHLO.
255
b4ed4da0 256
5dd1517f
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257Exim version 4.66
258-----------------
259
260PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
261 fixed by 4.65/MH/01 (is this a record?) are fixed:
262
263 (i) An empty string was always treated as zero by the numeric comparison
264 operators. This behaviour has been restored.
265
266 (ii) It is documented that the numeric comparison operators always treat
267 their arguments as decimal numbers. This was broken in that numbers
268 starting with 0 were being interpreted as octal.
269
270 While fixing these problems I realized that there was another issue that
271 hadn't been noticed. Values of message_size_limit (both the global option
272 and the transport option) were treated as octal if they started with 0.
273 The documentation was vague. These values are now always treated as
274 decimal, and I will make that clear in the documentation.
275
276
93cfa765
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277Exim version 4.65
278-----------------
279
280TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
281 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
282 versions. (#438)
283
d6066548
MH
284MH/01 Don't check that the operands of numeric comparison operators are
285 integers when their expansion is in "skipping" mode (fixes bug
286 introduced by 4.64-PH/07).
287
4362ff0d
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288PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
289 child addresses, Exim now panics and dies. Previously, because the count
290 is held in a short int, deliveries were likely to be lost. As such a
291 large number of recipients for a single message is ridiculous
292 (performance will be very, very poor), I have chosen to impose a limit
293 rather than extend the field.
294
93cfa765 295
944e9e9c
TF
296Exim version 4.64
297-----------------
aa41d2de 298
21d74bd9
TK
299TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
300 leftover -K file (the existence of which was triggered by #402).
301 While we were at it, introduced process PID as part of the -K
302 filename. This should rule out race conditions when creating
303 these files.
304
305TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
306 processing considerably. Previous code took too long for large mails,
307 triggering a timeout which in turn triggers #401.
308
309TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
310 in the DK code in transports.c. sendfile() is not really portable,
311 hence the _LINUX specificness.
944e9e9c
TF
312
313TF/01 In the add_headers option to the mail command in an Exim filter,
314 there was a bug that Exim would claim a syntax error in any
315 header after the first one which had an odd number of characters
316 in the field name.
317
2b1c6e3a
PH
318PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
319 callout verification, Exim cached a "reject" for the entire domain. This
320 is correct for most verifications, but it is not correct for a recipient
321 verification with use_sender or use_postmaster set, because in that case
322 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
323 case of MAIL FROM:<> rejection from other early rejections (e.g.
324 rejection of HELO). When verifying a recipient using a non-null MAIL
325 address, the cache is ignored if it shows MAIL FROM:<> rejection.
326 Whatever the result of the callout, the value of the domain cache is
327 left unchanged (for any other kind of callout, getting as far as trying
328 RCPT means that the domain itself is ok).
329
1f872c80
PH
330PH/02 Tidied a number of unused variable and signed/unsigned warnings that
331 gcc 4.1.1 threw up.
332
333PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
334 manifest itself as EPIPE rather than ECONNECT. When tidying away a
335 session, the daemon ignores ECONNECT errors and logs others; it now
336 ignores EPIPE as well.
337
d203e649
PH
338PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
339 (quoted-printable decoding).
340
cc2ed8f7 341PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 342 later the small subsequent patch to fix an introduced bug.
f951fd57 343
ddfcd446
PH
344PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
345
d45b1de8
PH
346PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
347
348PH/08 An error is now given if message_size_limit is specified negative.
349
38a0a95f 350PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 351 to be given (somewhat) arbitrary names.
38a0a95f 352
a2405d83
JJ
353JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
354 in 4.64-PH/09.
355
356JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
357 miscellaneous code fixes
358
6ea85e9a
PH
359PH/10 Added the log_reject_target ACL modifier to specify where to log
360 rejections.
361
26da7e20
PH
362PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
363 hostname. This is wrong, because it relates to the incoming message (and
364 probably the interface on which it is arriving) and not to the outgoing
365 callout (which could be using a different interface). This has been
366 changed to use the value of the helo_data option from the smtp transport
367 instead - this is what is used when a message is actually being sent. If
368 there is no remote transport (possible with a router that sets up host
369 addresses), $smtp_active_hostname is used.
6ea85e9a 370
14aa5a05 371PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 372 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
373 (a) The code assumed that strncpy() returns a negative number on buffer
374 overflow, which isn't the case. Replaced with Exim's string_format()
375 function.
376 (b) There were several signed/unsigned issues. I just did the minimum
377 hacking in of casts. There is scope for a larger refactoring.
378 (c) The code used strcasecmp() which is not a standard C function.
379 Replaced with Exim's strcmpic() function.
380 (d) The code set only $1; it now sets $auth1 as well.
381 (e) A simple test gave the error "authentication client didn't specify
382 service in request". It would seem that Dovecot has changed its
383 interface. Fortunately there's a specification; I followed it and
384 changed what the client sends and it appears to be working now.
385
ff75a1f7
PH
386PH/13 Added $message_headers_raw to provide the headers without RFC 2047
387 decoding.
388
e6f6568e
PH
389PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
390 address A is aliased to B and C, where B exists and C does not. Without
391 -v the output is "A verified" because verification stops after a
392 successful redirection if more than one address is generated. However,
393 with -v the child addresses are also verified. Exim was outputting "A
394 failed to verify" and then showing the successful verification for C,
395 with its parentage. It now outputs "B failed to verify", showing B's
396 parentage before showing the successful verification of C.
397
d6f6e0dc
PH
398PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
399 look up a TXT record in a specific list after matching in a combined
400 list.
401
322050c2
PH
402PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
403 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
404 they consult the DNS. I had assumed they would set it the way they
405 wanted; and indeed my experiments on Linux seem to show that in some
406 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
407 To be on the safe side, however, I have now made the interface to
408 host_find_byname() similar to host_find_bydns(), with an argument
409 containing the DNS resolver options. The host_find_byname() function now
410 sets these options at its start, just as host_find_bydns() does. The smtp
411 transport options dns_qualify_single and dns_search_parents are passed to
412 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
413 of host_find_byname() use the default settings of RES_DEFNAMES
414 (qualify_single) but not RES_DNSRCH (search_parents).
415
08955dd3
PH
416PH/17 Applied (a modified version of) Nico Erfurth's patch to make
417 spool_read_header() do less string testing, by means of a preliminary
418 switch on the second character of optional "-foo" lines. (This is
419 overdue, caused by the large number of possibilities that now exist.
420 Originally there were few.) While I was there, I also converted the
421 str(n)cmp tests so they don't re-test the leading "-" and the first
422 character, in the hope this might squeeze out yet more improvement.
423
1eccaa59
PH
424PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
425 flag allowing group syntax was set by the header_syntax check but not
426 turned off, possible causing trouble later; (2) The flag was not being
427 set at all for the header_verify test, causing "group"-style headers to
428 be rejected. I have now set it in this case, and also caused header_
429 verify to ignore an empty address taken from a group. While doing this, I
430 came across some other cases where the code for allowing group syntax
431 while scanning a header line wasn't quite right (mostly, not resetting
432 the flag correctly in the right place). These bugs could have caused
433 trouble for malformed header lines. I hope it is now all correct.
434
602e59e5
PH
435PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
436 with the "reply" argument non-NULL. The code, however (which originally
437 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
438 but it didn't always do it. This confused somebody who was copying the
439 code for some other use. I have removed all the tests.
440
411ef850
PH
441PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
442 feature that was used to support insecure browsers during the U.S. crypto
443 embargo. It requires special client support, and Exim is probably the
444 only MTA that supported it -- and would never use it because real RSA is
445 always available. This code has been removed, because it had the bad
446 effect of slowing Exim down by computing (never used) parameters for the
447 RSA_EXPORT functionality.
448
7befa435
PH
449PH/21 On the advice of Timo Sirainen, added a check to the dovecot
450 authenticator to fail if there's a tab character in the incoming data
451 (there should never be unless someone is messing about, as it's supposed
452 to be base64-encoded). Also added, on Timo's advice, the "secured" option
453 if the connection is using TLS or if the remote IP is the same as the
454 local IP, and the "valid-client-cert option" if a client certificate has
455 been verified.
456
48da4259 457PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
458 authenticators. This can be used for authorization after authentication
459 succeeds. (In the case of plaintext, it servers for both authentication
460 and authorization.)
461
48da4259
PH
462PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
463 if any retry times were supplied.
464
d1d5595c
PH
465PH/24 Exim crashed if verify=helo was activated during an incoming -bs
466 connection, where there is no client IP address to check. In this
467 situation, the verify now always succeeds.
468
0ef732d9
PH
469PH/25 Applied John Jetmore's -Mset patch.
470
328895cc
PH
471PH/26 Added -bem to be like -Mset, but loading a message from a file.
472
fd700877
PH
473PH/27 In a string expansion for a processed (not raw) header when multiple
474 headers of the same name were present, leading whitespace was being
475 removed from all of them, but trailing whitespace was being removed only
476 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
477 before concatenation. Completely empty headers in a concatenation (as
478 before) are ignored.
fd700877 479
8dce1a6f
PH
480PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
481 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
482
17af4a17
PH
483PH/29 [Removed. This was a change that I later backed out, and forgot to
484 correct the ChangeLog entry (that I had efficiently created) before
485 committing the later change.]
f6c332bd
PH
486
487PH/30 Exim was sometimes attempting to deliver messages that had suffered
488 address errors (4xx response to RCPT) over the same connection as other
489 messages routed to the same hosts. Such deliveries are always "forced",
490 so retry times are not inspected. This resulted in far too many retries
491 for the affected addresses. The effect occurred only when there were more
492 hosts than the hosts_max_try setting in the smtp transport when it had
493 the 4xx errors. Those hosts that it had tried were not added to the list
494 of hosts for which the message was waiting, so if all were tried, there
495 was no problem. Two fixes have been applied:
496
497 (i) If there are any address or message errors in an SMTP delivery, none
498 of the hosts (tried or untried) are now added to the list of hosts
499 for which the message is waiting, so the message should not be a
500 candidate for sending over the same connection that was used for a
501 successful delivery of some other message. This seems entirely
502 reasonable: after all the message is NOT "waiting for some host".
503 This is so "obvious" that I'm not sure why it wasn't done
504 previously. Hope I haven't missed anything, but it can't do any
505 harm, as the worst effect is to miss an optimization.
506
507 (ii) If, despite (i), such a delivery is accidentally attempted, the
508 routing retry time is respected, so at least it doesn't keep
509 hammering the server.
510
c1114884
PH
511PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
512 in ${readsocket because some servers need this prod.
513
7a0743eb
PH
514PH/32 Added some extra debug output when updating a wait-xxx database.
515
0d85fa3f
PH
516PH/33 The hint "could be header name not terminated by colon", which has been
517 given for certain expansion errors for a long time, was not being given
518 for the ${if def:h_colon_omitted{... case.
519
1bf43b78
PH
520PH/34 The spec says: "With one important exception, whenever a domain list is
521 being scanned, $domain contains the subject domain." There was at least
522 one case where this was not true.
523
520de300
PH
524PH/35 The error "getsockname() failed: connection reset by peer" was being
525 written to the panic log as well as the main log, but it isn't really
526 panic-worthy as it just means the connection died rather early on. I have
527 removed the panic log writing for the ECONNRESET error when getsockname()
528 fails.
529
48c7f9e2
PH
530PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
531 runs only) independently of the message's sender address. This meant
532 that, if the 4xx error was in fact related to the sender, a different
533 message to the same recipient with a different sender could confuse
534 things. In particualar, this can happen when sending to a greylisting
535 server, but other circumstances could also provoke similar problems.
536 I have changed the default so that the retry time for these errors is now
537 based a combination of the sender and recipient addresses. This change
538 can be overridden by setting address_retry_include_sender=false in the
539 smtp transport.
540
99ea1c86
PH
541PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
542 remote server are returned as part of bounce messages. This was not
543 happening for LMTP over a pipe (the lmtp transport), but now it is the
544 same for both kinds of LMTP.
545
a2042e78
PH
546PH/38 Despite being documented as not happening, Exim was rewriting addresses
547 in header lines that were in fact CNAMEs. This is no longer the case.
548
4fbcfc2e
PH
549PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
550 and queue runs started by the daemon processed all messages. This has
551 been fixed so that -R and -S can now usefully be given with -q<time>.
552
aa41d2de
PH
553PH/40 Import PCRE release 6.7 (fixes some bugs).
554
af561417
PH
555PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
556
3cc66b45
PH
557PH/42 Give an error if -q is specified more than once.
558
194cc0e4
PH
559PH/43 Renamed the variables $interface_address and $interface_port as
560 $received_ip_address and $received_port, to make it clear that these
561 values apply to message reception, and not to the outgoing interface when
562 a message is delivered. (The old names remain recognized, of course.)
563
a401ddaa
PH
564PH/44 There was no timeout on the connect() call when using a Unix domain
565 socket in the ${readsocket expansion. There now is.
566
4e88a19f
PH
567PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
568 be meaningful with "accept".
569
d7d7b289
SC
570SC/01 Eximstats V1.43
571 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
572
573SC/02 Eximstats V1.44
574 Use a glob alias rather than an array ref in the generated
575 parser. This improves both readability and performance.
576
577SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
578 Collect SpamAssassin and rejection statistics.
579 Don't display local sender or destination tables unless
580 there is data to show.
581 Added average volumes into the top table text output.
582
583SC/04 Eximstats V1.46
584 Collect data on the number of addresses (recipients)
585 as well as the number of messages.
586
587SC/05 Eximstats V1.47
588 Added 'Message too big' to the list of mail rejection
589 reasons (thanks to Marco Gaiarin).
590
591SC/06 Eximstats V1.48
592 Mainlog lines which have GMT offsets and are too short to
593 have a flag are now skipped.
594
595SC/07 Eximstats V1.49 (Alain Williams)
596 Added the -emptyok flag.
597
598SC/08 Eximstats V1.50
599 Fixes for obtaining the IP address from reject messages.
600
0ea2a468
JJ
601JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
602 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
603 whitesspace changes from 4.64-PH/27
604
605JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
606 match 4.64-PH/13
607
608JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
609 are found, allow negative numbers in numeric criteria)
610
611JJ/06 exipick.20061117.2, added new $message_body_missing variable
612
613JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
614 to match changes made in 4.64-PH/43
615
8a10f5a4
PH
616PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
617
30e18802
PH
618PH/47 Put in an explicit test for a DNS lookup of an address record where the
619 "domain" is actually an IP address, and force a failure. This locks out
620 those revolvers/nameservers that support "A-for-A" lookups, in
621 contravention of the specifications.
622
55728a4f
PH
623PH/48 When a host name was looked up from an IP address, and the subsequent
624 forward lookup of the name timed out, the host name was left in
625 $sender_host_name, contrary to the specification.
d7d7b289 626
d7837193
PH
627PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
628 restricted to single-key lookups, Exim was not diagnosing an error if
629 * or *@ was used with a query-style lookup.
630
87054a31
PH
631PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
632
ea2c01d2
MH
633MH/01 local_scan ABI version incremented to 1.1. It should have been updated
634 long ago, but noone interested enough thought of it. Let's just say that
635 the "1.1" means that there are some new functions that weren't there at
636 some point in the past.
637
e4fa6968
PH
638PH/51 Error processing for expansion failure of helo_data from an smtp
639 transport during callout processing was broken.
640
56f5d9bd
PH
641PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
642 tested/used via the -bh/-bhc/-bs options.
643
922e1c28
PH
644PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
645 bug, fixed in subsequent PCRE releases).
646
21eb6e72
PH
647PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
648 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
649
a0540757
PH
650PH/55 Check for a ridiculously long file name in exim_dbmbuild.
651
944e9e9c 652
478be7b0
SC
653Exim version 4.63
654-----------------
655
656SC/01 Use a glob alias rather than an array ref in eximstats generated
657 parser. This improves both readability and performance.
658
659SC/02 Collect SpamAssassin and rejection statistics in eximstats.
660 Don't display local sender or destination tables in eximstats unless
661 there is data to show.
662 Added average volumes into the eximstats top table text output.
663
664SC/03 Collect data on the number of addresses (recipients) as well
665 as the number of messages in eximstats.
666
2b965a65
TF
667TF/01 Correct an error in the documentation for the redirect router. Exim
668 does (usually) call initgroups() when daemonizing.
478be7b0 669
45b91596
PH
670TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
671 with consistent privilege compared to when running as a daemon.
478be7b0 672
c59f5781
TF
673TF/03 Note in the spec that $authenticated_id is not set for local
674 submissions from trusted users.
675
90fc3069
TF
676TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
677 Thanks to Dean Brooks <dean@iglou.com> for the patch.
678
6083aca0
TF
679TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
680 by adding some example configuration directives to the default
681 configuration file. A little bit of work is required to uncomment the
682 directives and define how usernames and passwords are checked, but
683 there is now a framework to start from.
684
765b530f
PH
685PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
686 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
687 without this. I don't know how relevant this is to other LDAP libraries.
688
4e167a8c
PH
689PH/02 Add the verb name to the "unknown ACL verb" error.
690
4608d683
PH
691PH/03 Magnus Holmgren's patch for filter_prepend_home.
692
b8dc3e4a
PH
693PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
694
5418e93b
PH
695PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
696 directory not expanded when it should be if an expanded home directory
697 was set for the address (which is overridden by the transport).
698
b4a9bda2
PH
699PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
700 libradius.
701
45b91596
PH
702PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
703 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
704 because it is too late at that time, and has no effect.
705
5547e2c5
PH
706PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
707 security issue with \' (bugzilla #107). I could not use the
708 PQescapeStringConn() function, because it needs a PGconn value as one of
709 its arguments.
710
dbcef0ea
PH
711PH/08 When testing addresses using -bt, indicate those final addresses that
712 are duplicates that would not cause an additional delivery. At least one
713 person was confused, thinking that -bt output corresponded to deliveries.
714 (Suppressing duplicates isn't a good idea as you lose the information
715 about possibly different redirections that led to the duplicates.)
716
25257489
PH
717PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
718 systems where poll() doesn't work, in particular OS X.
719
c816d124
PH
720PH/10 Added more information to debugging output for retry time not reached.
721
a9ccd69a
PH
722PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
723 operations in malware.c.
724
75fa1910
PH
725PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
726 signatures.
727
a7d7aa58
PH
728PH/13 If write_rejectlog was set false when logging was sent to syslog with
729 syslog_duplication set false, log lines that would normally be written
730 both the the main log and to the reject log were not written to syslog at
731 all.
732
42119b09
PH
733PH/14 In the default configuration, change the use of "message" in ACL warn
734 statements to "add_header".
735
41609df5
PH
736PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
737 not followed by a command (e.g. "seen endif").
738
a5bd321b
PH
739PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
740 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
741 latter.
742
e85a7ad5 743PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
744 so that it is now:
745
e85a7ad5
PH
746 ${if or { \
747 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
748 { match{$h_precedence:}{(?i)bulk|list|junk} } \
749 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
750 }{no}{yes}}
751
e85a7ad5
PH
752 The Auto-Submitted: and various List- headers are standardised, whereas I
753 don't think Precedence: ever was.
5dff5817 754
d8fe1c03
PH
755PH/18 Refactored debugging code in route_finduser() to show more information,
756 in particular, the error code if getpwnam() issues one.
757
16282d2b
PH
758PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
759 This is apparently needed in addition to the PH/07 change above to avoid
760 any possible encoding problems.
761
35d40a98
PH
762PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
763 but not after initializing Perl.
764
034d99ab
PH
765PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
766 output them only if debugging. By default they are written stderr,
767 apparently, which is not desirable.
768
6ec97b1b
PH
769PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
770 queries.
771
e22ca4ac
JJ
772JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
773 --not options
774
775JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
776
33d73e3b
PH
777PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
778 authenticated or an ident call has been made. Suppress the default
779 values for $authenticated_id and $authenticated_sender (but permit -oMai
780 and -oMas) when testing with -bh.
781
9ecb03f3
PH
782PH/24 Re-jigged the order of the tests in the default configuration so that the
783 tests for valid domains and recipients precede the DNS black list and CSA
784 tests, on the grounds that those ones are more expensive.
785
084efe8d
PH
786PH/25 Exim was not testing for a space following SMTP commands such as EHLO
787 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
788 This bug exists in every version of Exim that I still have, right back to
789 0.12.
790
366fc9f0
PH
791PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
792 However, an attempt to turn on case-sensitivity in a regex key by
793 including (?-i) didn't work because the subject string was already
794 lowercased, and the effects were non-intuitive. It turns out that a
795 one-line patch can be used to allow (?-i) to work as expected.
796
c59f5781 797
c887c79e
TF
798Exim version 4.62
799-----------------
800
801TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
802 other effects) broke the use of negated acl sub-conditions.
803
1cce3af8
PH
804PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
805 patch).
806
afb3eaaf
PH
807PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
808 "Deny" causes Exim to reject the incoming connection with a 554 error.
809 Unfortunately, if there is a major crisis, such as a disk failure,
810 tcp-wrappers gives "deny", whereas what one would like would be some
811 kind of temporary error. A kludge has been added to help with this.
812 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
813 554 error is used if errno is still zero or contains ENOENT (which occurs
814 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
815 451 error is used.
816
e173618b
PH
817PH/03 Add -lutil to the default FreeBSD LIBS setting.
818
dd16e114
PH
819PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
820 errors. Otherwise a message that provokes a temporary error (when other
821 messages do not) can cause a whole host to time out.
822
f7fd3850
PH
823PH/05 Batch deliveries by appendfile and pipe transports did not work when the
824 addresses were routed directly to files or pipes from a redirect router.
825 File deliveries just didn't batch; pipe deliveries might have suffered
826 odd errors.
827
d87df92c
PH
828PH/06 A failure to get a lock for a hints database would erroneously always say
829 "Failed to get write lock", even when it was really a read lock.
830
7e9f683d
PH
831PH/07 The appendfile transport was creating MBX lock files with a fixed mode
832 of 0600. This has been changed to use the value of the lockfile_mode
833 option (which defaults to 0600).
834
bfad5236
PH
835PH/08 Applied small patch from the Sieve maintainer.
836
01c490df
PH
837PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
838 folder from quota calculations, a direct delivery into this folder messed
839 up the contents of the maildirsize file. This was because the regex was
840 used only to exclude .Trash (or whatever) when the size of the mailbox
841 was calculated. There was no check that a delivery was happening into an
842 excluded directory. This bug has been fixed by ignoring all quota
843 processing for deliveries into excluded directories.
844
d6629cdc
PH
845PH/10 Added the maildirfolder_create_regex option to appendfile.
846
1cce3af8 847
214e2000
PH
848Exim version 4.61
849-----------------
850
851PH/01 The code for finding all the local interface addresses on a FreeBSD
852 system running IPv6 was broken. This may well have applied to all BSD
853 systems, as well as to others that have similar system calls. The broken
854 code found IPv4 interfaces correctly, but gave incorrect values for the
855 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
856 that it would not match correctly against @[] and not recognize the IPv6
857 addresses as local.
858
f9daeae0
PH
859PH/02 The ipliteral router was not recognizing addresses of the form user@
860 [ipv6:....] because it didn't know about the "ipv6:" prefix.
861
7e66e54d
PH
862PH/03 Added disable_ipv6.
863
c8ea1597
PH
864PH/04 Changed $reply_address to use the raw form of the headers instead of the
865 decoded form, because it is most often used to construct To: headers
866 lines in autoreplies, and the decoded form may well be syntactically
867 invalid. However, $reply_address has leading white space removed, and all
868 newlines turned into spaces so that the autoreply transport does not
869 grumble.
870
911f6fde
PH
871PH/05 If group was specified without a user on a router, and no group or user
872 was specified on a transport, the group from the router was ignored.
873
47ca6d6c
PH
874PH/06 Increased the number of ACL variables to 20 of each type, and arranged
875 for visible compile-time settings that can be used to change these
876 numbers, for those that want even more. Backwards compatibility with old
877 spool files has been maintained. However, going back to a previous Exim
878 release will lost any variables that are in spool files.
879
ed0e9820
PH
880PH/07 Two small changes when running in the test harness: increase delay when
881 passing a TCP/IP connection to a new process, in case the original
882 process has to generate a bounce, and remove special handling of
883 127.0.0.2 (sic), which is no longer necessary.
884
eff37e47
PH
885PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
886 be the same on different OS.
887
1921d2ea
PH
888PH/09 Moved a debug statement in filter processing to avoid a race problem when
889 testing.
890
b3f69ca8
JJ
891JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
892 whether --show-vars was specified or not
893
894JJ/02 exipick: Added support for new ACL variable spool format introduced
895 in 4.61-PH/06
896
424a1c63
PH
897PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
898 syntactically invalid From: or Reply-to: line, and a filter used this to
899 generate an autoreply, and therefore failed to obtain an address for the
900 autoreply, Exim could try to deliver to a non-existent relative file
901 name, causing unrelated and misleading errors. What now happens is that
902 it logs this as a hard delivery error, but does not attempt to create a
903 bounce message.
904
7a100415
PH
905PH/11 The exinext utility has a -C option for testing purposes, but although
906 the given file was scanned by exinext itself; it wasn't being passed on
907 when Exim was called.
908
19b9dc85
PH
909PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
910 an end-of-file indication when reading a command response.
911
309bd837
PH
912PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
913 compiled. In many other places in Exim, IPv6 addresses are always
914 recognized, so I have changed this. It also means that IPv4 domain
915 literals of the form [IPV4:n.n.n.n] are now always recognized.
916
59e82a2a
PH
917PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
918 used if the router is not running as root, for example, when verifying at
919 ACL time, or when using -bh. The debugging output from this situation was
920 non-existent - all you got was a failure to exec. I have made two
921 changes:
922
923 (a) Failures to set uid/gid, the current directory, or a process leader
924 in a subprocess such as that created by queryprogram now generate
925 suitable debugging ouput when -d is set.
926
927 (b) The queryprogram router detects when it is not running as root,
928 outputs suitable debugging information if -d is set, and then runs
929 the subprocess without attempting to change uid/gid.
930
9edc04ce
PH
931PH/15 Minor change to Makefile for building test_host (undocumented testing
932 feature).
933
1349e1e5
PH
934PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
935 additional section of a DNS packet that returns MX or SRV records.
936 Instead, it always explicitly searches for A/AAAA records. This avoids
937 major problems that occur when a DNS server includes only records of one
938 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
939 fixed another bug: if SRV records were looked up and the corresponding
940 address records were *not* found in the additional section, the port
941 values from the SRV records were lost.
942
ea49d0e1
PH
943PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
944 using the correct key (the original address) when searching the retry
945 rules in order to find which one to use for generating the retry hint.
946
064a94c9
PH
947PH/18 If quota_warn_message contains a From: header, Exim now refrains from
948 adding the default one. Similarly, if it contains a Reply-To: header, the
949 errors_reply_to option, if set, is not used.
950
727071f8
PH
951PH/19 When calculating a retry time, Exim used to measure the "time since
952 failure" by looking at the "first failed" field in the retry record. Now
953 it does not use this if it is later than than the arrival time of the
954 message. Instead it uses the arrival time. This makes for better
955 behaviour in cases where some deliveries succeed, thus re-setting the
956 "first failed" field. An example is a quota failure for a huge message
957 when small messages continue to be delivered. Without this change, the
958 "time since failure" will always be short, possible causing more frequent
959 delivery attempts for the huge message than are intended.
dd16e114 960 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 961
f78eb7c6
PH
962PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
963 $1, $2, $3) because the numerical variables can be reset during some
964 expansion items (e.g. "match"), thereby losing the authentication data.
965
21c28500
PH
966PH/21 Make -bV show the size of off_t variables so that the test suite can
967 decide whether to run tests for quotas > 2G.
968
969PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
970 mailbox_size, and mailbox_filecount in the appendfile transport. If a
971 filecount value is greater than 2G or if a quota value is greater than 2G
972 on a system where the size of off_t is not greater than 4, a panic error
973 is given.
974
1688f43b
PH
975PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
976 never match. The debug and -bh output now contains an explicit error
977 message indicating a malformed IPv4 address or mask.
978
979PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
980 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
981 PH/23 above applies.
982
9675b384
PH
983PH/25 Do not write to syslog when running in the test harness. The only
984 occasion when this arises is a failure to open the main or panic logs
985 (for which there is an explicit test).
986
6a3f1455
PH
987PH/26 Added the /no_tell option to "control=freeze".
988
dac79d3e
PH
989PH/27 If a host name lookup failed very early in a connection, for example, if
990 the IP address matched host_lookup and the reverse lookup yielded a name
991 that did not have a forward lookup, an error message of the form "no IP
992 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
993 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 994
5977a0b3
PH
995PH/28 An enabling patch from MH: add new function child_open_exim2() which
996 allows the sender and the authenticated sender to be set when
997 submitting a message from within Exim. Since child_open_exim() is
998 documented for local_scan(), the new function should be too.
999
c91535f3
PH
1000PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
1001 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
1002 results in an empty string is now treated as unset.
1003
0d46a8c8
PH
1004PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
1005
278c6e6c
PH
1006PH/31 Added sender_verify_fail logging option.
1007
2cbb4081
PH
1008PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
1009 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1010 tidied the source and removed it altogether.
1011
3eef829e
PH
1012PH/33 When a queue run was abandoned because the load average was too high, a
1013 log line was always written; now it is written only if the queue_run log
1014 selector is set. In addition, the log line for abandonment now contains
1015 information about the queue run such as the pid. This is always present
1016 in "start" and "stop" lines but was omitted from the "abandon" line.
1017
1ab95fa6
PH
1018PH/34 Omit spaces between a header name and the colon in the error message that
1019 is given when verify = headers_syntax fails (if there are lots of them,
1020 the message gets confusing).
1021
230205fc
PH
1022PH/35 Change the default for dns_check_names_pattern to allow slashes within
1023 names, as there are now some PTR records that contain slashes. This check
1024 is only to protect against broken name servers that fall over on strange
1025 characters, so the fact that it applies to all lookups doesn't matter.
1026
75e0e026
PH
1027PH/36 Now that the new test suite is complete, we can remove some of the
1028 special code in Exim that was needed for the old test suite. For example,
1029 sorting DNS records because real resolvers return them in an arbitrary
1030 order. The new test suite's fake resolver always returns records in the
1031 same order.
1032
1033PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1034 bounces) except when queue_only is set, to avoid logging races between
1035 the different processes.
1036
145396a6
PH
1037PH/38 Panic-die if .include specifies a non-absolute path.
1038
3cd34f13
PH
1039PH/39 A tweak to the "H" retry rule from its user.
1040
11121d3d
JJ
1041JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1042 a label. They prevented compilation on older perls.
1043
1044JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1045 a warning to be raised on newish perls.
1046
1047JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1048 on queue. Changes to match documented behaviour of showing count of
1049 messages matching specified criteria.
1050
8def5aaf
PH
1051PH/40 Changed the default ident timeout from 30s to 5s.
1052
929ba01c
PH
1053PH/41 Added support for the use of login_cap features, on those BSD systems
1054 that have them, for controlling the resources used by pipe deliveries.
1055
2632889e
PH
1056PH/42 The content-scanning code uses fopen() to create files in which to put
1057 message data. Previously it was not paying any attention to the mode of
1058 the files. Exim runs with umask(0) because the rest of the code creates
1059 files with open(), and sets the required mode explicitly. Thus, these
1060 files were ending up world-writeable. This was not a big issue, because,
1061 being within the spool directory, they were not world-accessible. I have
1062 created a function called modefopen, which takes an additional mode
1063 argument. It sets umask(777), creates the file, chmods it to the required
1064 mode, then resets the umask. All the relevant calls to fopen() in the
1065 content scanning code have been changed to use this function.
1066
944a9c55
PH
1067PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1068 to 24 hours. This avoids potential overflow problems when processing G
1069 and H retry rules. I suspect nobody ever tinkers with this value.
1070
4a23603b
PH
1071PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1072
4730f942
PH
1073PH/45 When the plaintext authenticator is running as a client, the server's
1074 challenges are checked to ensure they are valid base64 strings. By
1075 default, the authentication attempt is cancelled if an invalid string is
1076 received. Setting client_ignore_invalid_base64 true ignores these errors.
1077 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1078 they are received. Thus, the responses can be made to depend on the
1079 challenges. If an invalid string is ignored, an empty string is placed in
1080 the variable.
1081
30dba1e6
PH
1082PH/46 Messages that are created by the autoreply transport now contains a
1083 References: header, in accordance with RFCs 2822 and 3834.
1084
382afc6b
PH
1085PH/47 Added authenticated_sender_force to the smtp transport.
1086
a86229cf
PH
1087PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1088
50c99ba6
PH
1089PH/49 Installed latest patch from the Sieve maintainer.
1090
d35e429d
PH
1091PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1092 was also set, the appendfile transport was unnecessarily scanning a
1093 directory of message files (e.g. for maildir delivery) to find the count
1094 of files (along with the size), even though it did not need this
1095 information. It now does the scan only if it needs to find either the
1096 size of the count of files.
1097
f90d018c
PH
1098PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1099
75def545
PH
1100PH/52 Two bugs concerned with error handling when the smtp transport is
1101 used in LMTP mode:
1102
1103 (i) Exim was not creating retry information for temporary errors given
1104 for individual recipients after the DATA command when the smtp transport
1105 was used in LMTP mode. This meant that they could be retried too
1106 frequently, and not timed out correctly.
1107
1108 (ii) Exim was setting the flag that allows error details to be returned
1109 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1110 recipients that were returned after the DATA command.
1111
1112PH/53 This is related to PH/52, but is more general: for any failing address,
1113 when detailed error information was permitted to be returned to the
1114 sender, but the error was temporary, then after the final timeout, only
1115 "retry timeout exceeded" was returned. Now it returns the full error as
1116 well as "retry timeout exceeded".
1117
c46782ef
PH
1118PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1119 do this, and (what is worse) MTAs that accept it.
1120
71fafd95
PH
1121PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1122 will now be deprecated.
1123
2c5db4fd
PH
1124PH/56 New os.c-cygwin from the Cygwin maintainer.
1125
9cf6b11a
JJ
1126JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1127 formats (previously only available in exim formats via -bpr, -bpru,
1128 and -bpra. Now also available in native and exiqgrep formats)
1129
1130JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1131 with very large, slow to parse queues
1132
1133JJ/08 exipick: added ! as generic prefix to negate any criteria format
1134
1135JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1136
898d150f
PH
1137PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1138 responses to authentication challenges, though it was showing the
1139 challenges; (ii) I've removed the CR characters from the debug output for
1140 SMTP output lines.
1141
46218253
PH
1142PH/58 Allow for the insertion of a newline as well as a space when a string
1143 is turned into more than one encoded-word during RFC 2047 encoding. The
1144 Sieve code now uses this.
1145
e97957bc
PH
1146PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1147 data_4xx, lost_connection, tls_required.
1148
81e509d7
PH
1149PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1150 message was being sent as an SMTP response.
1151
3d240ff7
PH
1152PH/61 Add -l and -k options to exicyclog.
1153
b37c4101
PH
1154PH/62 When verifying, if an address was redirected to one new address, so that
1155 verification continued, and the new address failed or deferred after
1156 having set something in $address_data, the value of $address_data was not
1157 passed back to the ACL. This was different to the case when no
1158 redirection occurred. The value is now passed back in both cases.
1159
79378e0f
PH
1160PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1161 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1162 use login_cap.h, so on its own it isn't the distinguishing feature. The
1163 new name refers directly to the setclassresources() function.
1164
e49c7bb4
PH
1165PH/65 Added configuration files for NetBSD3.
1166
d114ec46
PH
1167PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1168
f3d7df6c
PH
1169PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1170 is preferred over IPv4.
1171
715ab376
PH
1172PH/68 The bounce_return_message and bounce_return_body options were not being
1173 honoured for bounces generated during the reception of non-SMTP messages.
1174 In particular, this applied to messages rejected by the ACL. This bug has
1175 been fixed. However, if bounce_return_message is true and bounce_return_
1176 body is false, the headers that are returned for a non-SMTP message
1177 include only those that have been read before the error was detected.
1178 (In the case of an ACL rejection, they have all been read.)
1179
6b31b150
PH
1180PH/69 The HTML version of the specification is now built in a directory called
1181 spec_html instead of spec.html, because the latter looks like a path with
1182 a MIME-type, and this confuses some software.
1183
1184PH/70 Catch two compiler warnings in sieve.c.
1185
d515a917
PH
1186PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1187 function verify_get_ident() calls ip_connect() to connect a socket, but
1188 if the "connect()" function timed out, ip_connect() used to close the
1189 socket. However, verify_get_ident() also closes the socket later, and in
1190 between Exim writes to the log, which may get opened at this point. When
1191 the socket was closed in ip_connect(), the log could get the same file
1192 descriptor number as the socket. This naturally causes chaos. The fix is
1193 not to close the socket in ip_connect(); the socket should be closed by
1194 the function that creates it. There was only one place in the code where
1195 this was missing, in the iplookup router, which I don't think anybody now
1196 uses, but I've fixed it anyway.
1197
9b8fadde
PH
1198PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1199 well as to direct DNS lookups. Otherwise the handling of names in host
1200 lists is inconsistent and therefore confusing.
1201
214e2000 1202
5de37277
PH
1203Exim version 4.60
1204-----------------
1205
cc38ddbf
PH
1206PH/01 Two changes to the default runtime configuration:
1207
1208 (1) Move the checks for relay_from_hosts and authenticated clients from
1209 after to before the (commented out) DNS black list checks.
1210
1211 (2) Add control=submission to the relay_from_hosts and authenticated
1212 clients checks, on the grounds that messages accepted by these
1213 statements are most likely to be submissions.
5de37277 1214
72fdd6ae
PH
1215PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1216
1217 (1) Generate an error if the third argument for the ${prvs expansion is
1218 not a single digit.
1219
1220 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1221 string.
1222
1223 (3) Reset the variables that are obtained from the first argument of
1224 ${prvscheck and used in the second argument before leaving the code,
1225 because their memory is reclaimed, so using them afterwards may do
1226 silly things.
1227
1228 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1229 one (it's much easier than Tom thought :-).
1230
1231 (5) Because of (4), we can now allow for the use of $prvscheck_result
1232 inside the third argument.
cb9328de 1233
cb741023
PH
1234PH/03 For some reason, the default setting of PATH when running a command from
1235 a pipe transport was just "/usr/bin". I have changed it to
1236 "/bin:/usr/bin".
1237
f174f16e
PH
1238PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1239 anything to be listed in the output from -bV.
b2f5a032 1240
c25242d7
PH
1241PH/05 When a filter generated an autoreply, the entire To: header line was
1242 quoted in the delivery log line, like this:
1243
1244 => >A.N.Other <ano@some.domain> <original@ddress> ...
1245
1246 This has been changed so that it extracts the operative address. There
1247 may be more than one such address. If so, they are comma-separated, like
1248 this:
1249
1250 => >ano@some.domain,ona@other.domain <original@ddress> ...
1251
82c19f95
PH
1252PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1253 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1254 not being looked up in the rDNS to get a host name, Exim was showing the
1255 IP address twice in Received: lines, even though the IP addresses were
1256 identical. For example:
1257
1258 Received: from [1.2.3.4] (helo=[1.2.3.4])
1259
1260 However, if the real host name was known, it was omitting the HELO data
1261 if it matched the actual IP address. This has been tidied up so that it
1262 doesn't show the same IP address twice.
1263
d7ffbc12
PH
1264PH/07 When both +timestamp and +memory debugging was on, the value given by
1265 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1266 called by the debug printing, thereby overwriting the timestamp buffer.
1267 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1268
9f526266
PH
1269PH/08 When the original message was included in an autoreply transport, it
1270 always said "this is a copy of the message, including all the headers",
1271 even if body_only or headers_only was set. It now gives an appropriate
1272 message.
1273
87fcc8b9
PH
1274PH/09 Applied a patch from the Sieve maintainer which:
1275
1276 o fixes some comments
1277 o adds the (disabled) notify extension core
1278 o adds some debug output for the result of if/elsif tests
1279 o points to the current vacation draft in the documentation
1280 and documents the missing references header update
1281
1282 and most important:
1283
1284 o fixes a bug in processing the envelope test (when testing
1285 multiple envelope elements, the last element determinted the
1286 result)
1287
456682f5
PH
1288PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1289 Electronic Mail") by including:
1290
1291 Auto-submitted: auto-generated
1292
1293 in the messages that it generates (bounce messages and others, such as
1294 warnings). In the case of bounce messages for non-SMTP mesages, there was
1295 also a typo: it was using "Auto_submitted" (underscore instead of
1296 hyphen). Since every message generated by Exim is necessarily in response
1297 to another message, thes have all been changed to:
1298
1299 Auto-Submitted: auto-replied
1300
1301 in accordance with these statements in the RFC:
1302
1303 The auto-replied keyword:
1304
1305 - SHOULD be used on messages sent in direct response to another
1306 message by an automatic process,
1307
1308 - MUST NOT be used on manually-generated messages,
1309
1310 - MAY be used on Delivery Status Notifications (DSNs) and Message
1311 Disposition Notifications (MDNs),
1312
1313 - MUST NOT be used on messages generated by automatic or periodic
1314 processes, except for messages which are automatic responses to
1315 other messages.
1316
3e46c1aa
PH
1317PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1318 to the default Received: header definition.
456682f5 1319
49826d12
PH
1320PH/12 Added log selector acl_warn_skipped (default on).
1321
eba0c039
PH
1322PH/13 After a successful wildlsearch lookup, discard the values of numeric
1323 variables because (a) they are in the wrong storage pool and (b) even if
1324 they were copied, it wouldn't work properly because of the caching.
1325
a0d6ba8a
PH
1326PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1327 checking when decoding. Apparently there are clients that generate
1328 overlong encoded strings. Why am I not surprised?
1329
f0917727
PH
1330PH/15 If the first argument of "${if match_address" was not empty, but did not
1331 contain an "@" character, Exim crashed. Now it writes a panic log message
1332 and treats the condition as false.
1333
096fee00
PH
1334PH/16 In autoreply, treat an empty string for "once" the same as unset.
1335
024bd3c2
PH
1336PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1337 extension "envelope-auth". The code is finished and in agreement with
1338 other implementations, but there is no documentation so far and in fact,
1339 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1340 not changing the active code.
1341
1342 Print executed "if" and "elsif" statements when debugging is used. This
1343 helps a great deal to understand what a filter does.
1344
1345 Document more things not specified clearly in RFC3028. I had all this
1346 sorted out, when out of a sudden new issues came to my mind. Oops."
1347
df199fec
PH
1348PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1349 (Bugzilla #53).
1350
d27f1df3
PH
1351PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1352 canonical form (as documented). However, after a host name lookup from
1353 the IP address, check_host() was doing a simple string comparison with
1354 addresses acquired from the DNS when checking that the found name did
1355 have the original IP as one of its addresses. Since any found IPv6
1356 addresses are likely to be in abbreviated form, the comparison could
1357 fail. Luckily, there already exists a function for doing the comparison
1358 by converting both addresses to binary, so now that is used instead of
1359 the text comparison.
1360
96776534
PH
1361PH/20 There was another similar case to PH/19, when a complete host name was
1362 given in a host list; looking up its IP address could give an abbreviated
1363 form, whereas the current host's name might or might not be abbreviated.
1364 The same fix has been applied.
1365
5de37277 1366
9a799bc0
PH
1367Exim version 4.54
1368-----------------
1369
1370PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1371 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1372 It now does.
1373
99a4b039
PH
1374PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1375 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1376
1377PH/03 Typo: missing ".o" in src/pcre/Makefile.
1378
4b233853
PH
1379PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1380 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1381 Also, for "Auto-Submitted", treat anything other than "no" as
1382 non-personal, in accordance with RFC 3834. (Previously it treated
1383 anything starting "auto-" as non-personal.)
1384
8857ccfd
PH
1385TF/01 The control=submission/name=... option had a problem with syntax
1386 errors if the name included a slash character. The /name= option
1387 now slurps the rest of the string, so it can include any characters
1388 but it must come last in the list of options (after /sender_retain
1389 or /domain=).
1390
433a2980
PH
1391PH/05 Some modifications to the interface to the fake nameserver for the new
1392 testing suite.
1393
3e46c1aa 1394
9a799bc0 1395
e3a311ba
TK
1396Exim version 4.53
1397-----------------
1398
1399TK/01 Added the "success_on_redirect" address verification option. See
1400 NewStuff for rationale and an example.
1401
13b685f9
PH
1402PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1403
395ff96d
PH
1404PH/02 Patch to exigrep to allow it to work on syslog lines.
1405
5b68f6e4
PH
1406PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1407 fread() to skip over the body file's header line, because in Cygwin the
1408 header line is locked and is inaccessible.
1409
1ab52c69
PH
1410PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1411 co-exist for some time) to make it clear that it is the Exim ID that is
1412 referenced, not the Message-ID: header line.
1413
b07e6aa3
PH
1414PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1415 string_format() function, because snprintf() does not exist on all
1416 operating systems.
1417
254e032f
PH
1418PH/06 The use of forbid_filter_existstest now also locks out the use of the
1419 ${stat: expansion item.
1420
3af76a81
PH
1421PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1422 protocol synchronization error", to keep the pedants happy.
1423
2548ba04
PH
1424PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1425 well as for IRIX systems, when gcc is being used. See the host.c source
1426 file for comments.
1427
b6c6011d
PH
1428PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1429
cf39cf57
PH
1430PH/10 Named domain lists were not working if used in a queue_smtp_domains
1431 setting.
1432
f1513293
PH
1433PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1434 transport and to the smtp transport in LMTP mode.
1435
727549a4
PH
1436TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1437
af46795e
PH
1438PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1439 run a filter in a subprocess. This could lead to confusion in subsequent
1440 lookups in the parent process. There should also be a search_tidyup() at
1441 the end of the subprocess.
1442
d7b47fd0
PH
1443PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1444 only if the host matched helo_try_verify_hosts, which caused the
1445 verification to occur when the EHLO/HELO command was issued. The ACL just
1446 tested the remembered result. Now, if a previous verification attempt has
1447 not happened, "verify = helo" does it there and then.
1448
ee744174
JJ
1449JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1450
b582ab87
PH
1451TK/03 Fix log output including CR from clamd.
1452
41a13e0a
PH
1453PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1454 exist provoked a memory error which could cause a segfault.
1455
f625cc5a
PH
1456PH/15 Installed PCRE 6.2
1457
1458PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1459
21f7af35
PH
1460PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1461 of the problem. Specifically, suggested +O2 rather than +O1 for the
1462 HP-UX compiler.
1463
31480e42
PH
1464PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1465
2d280592
PH
1466PH/20 If a delivery was routed to a non-standard port by means of an SRV
1467 record, the port was not correctly logged when the outgoing_port log
1468 selector was set (it logged the transort's default port).
1469
7cd1141b
PH
1470PH/21 Added support for host-specific ports to manualroute, queryprogram,
1471 fallback_hosts, and "hosts" in the smtp transport.
1472
1473PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1474 host errors such as "Connection refused".
1475
750af86e
PH
1476PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1477 authentication with radiusclient 0.4.9:
1478
1479 - Error returned from rc_read_config was caught wrongly
1480 - Username/password not passed on to radius server due to wrong length.
1481
1482 The presumption is that some radiusclient API changes for 4.51/PH/17
1483 were not taken care of correctly. The code is still untested by me (my
1484 Linux distribution still has 0.3.2 of radiusclient), but it was
1485 contributed by a Radius user.
1486
1487PH/24 When doing a callout, the value of $domain wasn't set correctly when
1488 expanding the "port" option of the smtp transport.
1489
4304270b
TK
1490TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1491 while reading a MIME header. Thanks to Tom Hughes for a patch.
1492
750af86e
PH
1493PH/24 Include config.h inside local_scan.h so that configuration settings are
1494 available.
1495
64ffc24f
PH
1496PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1497 that in an ACL for RCPT (for example), you can examine exactly what was
1498 received.
1499
5dd9625b
PH
1500PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1501 commands, but it was not correctly comparing the address with the actual
1502 client host address. Thus, it would show the EHLO address in Received:
1503 header lines when this was not necessary.
1504
5591031b
PH
1505PH/27 Added the % operator to ${eval:}.
1506
ba18e66a
PH
1507PH/28 Exim tries to create and chdir to its spool directory when it starts;
1508 it should be ignoring failures (because with -C, for example, it has lost
1509 privilege). It wasn't ignoring creation failures other than "already
1510 exists".
1511
9cec981f
PH
1512PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1513 -bV or -d is used.
1514
aa2b5c79
PH
1515PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1516 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1517 too many continuations, the temporary file was not being removed, and the
1518 return code was incorrect.
aa2b5c79 1519
48a53b7f
PH
1520PH/31 Missing "BOOL" in function definition in filtertest.c.
1521
1c59d63b
PH
1522PH/32 Applied Sieve patches from the maintainer.
1523
671012da
TK
1524TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1525
1509d3a8
PH
1526PH/33 Added "verify = not_blind".
1527
1528PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1529 Local/Makefile (with some defaults set). These are used in built scripts
1530 such as exicyclog, but they have never been used in the exim_install
1531 script (though there are many overriding facilities there). I have
1532 arranged that the exim_install script now takes note of these two
1533 settings.
1534
1535PH/35 Installed configuration files for Dragonfly.
1536
2fe1a124
PH
1537PH/36 When a locally submitted message by a trusted user did not contain a
1538 From: header, and the sender address was obtained from -f or from an SMTP
1539 MAIL command, and the trusted user did not use -F to supply a sender
1540 name, $originator_name was incorrectly used when constructing a From:
1541 header. Furthermore, $originator_name was used for submission mode
1542 messages from external hosts without From: headers in a similar way,
1543 which is clearly wrong.
1544
8800895a
PH
1545PH/37 Added control=suppress_local_fixups.
1546
ccfdb010
PH
1547PH/38 When log_selector = +received_sender was set, and the addition of the
1548 sender made the log line's construction buffer exactly full, or one byte
1549 less than full, an overflow happened when the terminating "\n" was
1550 subsequently added.
1551
1130bfb0
PH
1552PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1553 when the result of a list match is failure because a DNS lookup failed.
1554
ebcb507f
PH
1555PH/40 RM_COMMAND is now used in the building process.
1556
c35e155c
PH
1557PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1558 the "build-* directories that it finds.
1559
95d1f782
PH
1560PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1561 address in a domain literal was a prefix of an interface address.
1562
fd6de02e
PH
1563PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1564 when verifying a sender address, unless rewrite_headers is false.
1565
58de37c5
PH
1566PH/44 Wrote a long comment about why errors_to addresses are verified as
1567 recipients, not senders.
1568
261cf466
TF
1569TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1570 the ratelimit ACL was added.
1571
3ee512ff
PH
1572PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1573
e08c430f
PH
1574PH/46 Added extra information about PostgreSQL errors to the error string.
1575
bef5a11f
PH
1576PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1577 avoiding the need to install special zones in a real server. This is
1578 backwards compatible; if it can't find the fake resolver, it drops back.
1579 Thus, both old and new test suites can be run.
1580
7546de58
TF
1581TF/02 Added util/ratelimit.pl
1582
e5d5a95f
TF
1583TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1584 clock is set back in time.
1585
2e88a017
TF
1586TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1587 Candler <B.Candler@pobox.com>.
1588
a5f65aa4
TF
1589TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1590 OK for addresses that are the result of redirections.
1591
e7726cbf
PH
1592PH/48 A number of further additions for the benefit of the new test suite,
1593 including a fake gethostbyname() that interfaces to the fake DNS resolver
1594 (see PH/47 above).
1595
a7fdad5b
TF
1596TF/06 The fix for widen_domains has also been applied to qualify_single and
1597 search_parents which are the other dnslookup options that can cause
1598 header rewrites.
1599
6af56900
PH
1600PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1601 type ("H").
1602
0925ede6
PH
1603PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1604
66afa403
TF
1605TF/07 Exim produced the error message "an SRV record indicated no SMTP
1606 service" if it encountered an MX record with an empty target hostname.
1607 The message is now "an MX or SRV record indicated no SMTP service".
1608
0154e85a
TF
1609TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1610 if the DNS of the sending site is misconfigured. This is quite a
1611 common situation. This change restores the behaviour of treating a
1612 helo verification defer as a failure.
1613
16f12c76
PH
1614PH/51 If self=fail was set on a router, the bounce message did not include the
1615 actual error message.
1616
bbe902f0 1617
e5a9dba6
PH
1618Exim version 4.52
1619-----------------
1620
1621TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1622
22c3b60b
PH
1623PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1624 command itself ended in error, the underlying message about the transport
1625 filter timeout was being overwritten with the pipe command error. Now the
1626 underlying error message should be appended to the second error message.
1627
06a9b4b5
PH
1628TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1629
c1ac6996
PH
1630PH/02 Reduce the amount of output that "make" produces by default. Full output
1631 can still be requested.
1632
9c7a242c
PH
1633PH/03 The warning log line about a condition test deferring for a "warn" verb
1634 was being output only once per connection, rather than after each
1635 occurrence (because it was using the same function as for successful
1636 "warn" verbs). This seems wrong, so I have changed it.
1637
87ba3f5f
PH
1638TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1639 it should not have, which might have caused a crash in the right
1640 circumstances, but probably never did.
1641
1642PH/04 Installed a modified version of Tony Finch's patch to make submission
1643 mode fix the return path as well as the Sender: header line, and to
1644 add a /name= option so that you can make the user's friendly name appear
1645 in the header line.
1646
29aba418
TF
1647TF/03 Added the control = fakedefer ACL modifier.
1648
fe0dab11
TF
1649TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1650 Mark Lowes for thorough testing.
870f6ba8 1651
11d337a4
TK
1652TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1653
1654TK/03 Merged latest SRS patch from Miles Wilton.
1655
415c8f3b
PH
1656PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1657 with the definition in sysexits.h (which is #included earlier).
1658 Fortunately, Exim does not actually use EX_OK. The code used to try to
1659 preserve the sysexits.h value, by assumimg that macro definitions were
1660 scanned for macro replacements. I have been disabused of this notion,
1661 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1662
958541e9
PH
1663PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1664 in the smtp transport. When a block could not be written in a single
1665 write() function, the timeout was being re-applied to each part-write.
1666 This seems wrong - if the receiver was accepting one byte at a time it
1667 would take for ever. The timeout is now adjusted when this happens. It
1668 doesn't have to be particularly precise.
1669
c206415f
TK
1670TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1671 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1672
2a4be8f9
PH
1673PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1674 without a domain if the check to <postmaster@domain> fails.
1675
1cba11c5
SC
1676SC/01 Eximstats: added -xls and the ability to specify output files
1677 (patch written by Frank Heydlauf).
1678
1679SC/02 Eximstats: use FileHandles for outputing results.
1680
1681SC/03 Eximstats: allow any combination of xls, txt, and html output.
1682
1683SC/04 Eximstats: fixed display of large numbers with -nvr option
1684
1685SC/05 Eximstats: fixed merging of reports with empty tables.
1686
1687SC/06 Eximstats: added the -include_original_destination flag
1688
1689SC/07 Eximstats: removed tabs and trailing whitespace.
1690
1005d00e
TK
1691TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1692
1693TK/06 MBOX spool code: Add real "From " MBOX separator line
1694 so the .eml file is really in mbox format (even though
1695 most programs do not really care). Patch from Alex Miller.
1696
1697TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1698 The latter is generated from $received_to and is only set if the
1699 message has one envelope recipient. SA can use these headers,
1700 obviously out-of-the-box. Patch from Alex Miller.
1701
9b4768fa
PH
1702PH/08 The ${def test on a variable was returning false if the variable's
1703 value was "0", contrary to what the specification has always said!
1704 The result should be true unless the variable is empty.
1705
1706PH/09 The syntax error of a character other than { following "${if
1707 def:variable_name" (after optional whitespace) was not being diagnosed.
1708 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1709 accidental colon was present, for example, could give incorrect results.
1710
0d7eb84a
PH
1711PH/10 Tidied the code in a number of places where the st_size field of a stat()
1712 result is used (not including appendfile, where other changes are about
1713 to be made).
1714
1715PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1716 This involved changing a lot of size variables from int to off_t. It
1717 should work with maildirs and everything.
1718
40727bee
TK
1719TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1720 spamd dying while we are connected to it.
1721
554d2369
TF
1722TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1723 <jgh@wizmail.org>
1724
1f922db1
PH
1725PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1726 function for BDB 4.3.
1727
ef213c3b
PH
1728PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1729
8ac170f3
PH
1730PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1731 the sources for PCRE have been re-arranged and more files are now
1732 involved.
1733
b1c749bb
PH
1734PH/15 The code I had for printing potentially long long variables in PH/11
1735 above was not the best (it lost precision). The length of off_t variables
1736 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1737 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1738 to be "long long int" or "long int". This is needed for the internal
1739 formatting function string_vformat().
b1c749bb 1740
4aac9b49
PH
1741PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1742 the configuration file to be ":syslog", then the script "guesses" where
1743 the logs files are, rather than using the compiled in default. In our
1744 case the guess is not the same as the compiled default, so the script
1745 suddenly stopped working when I started to use syslog. The patch checks
1746 to see if log_file_path is "". If so, it attempts to read it from exim
1747 with no configuration file to get the compiled in version, before it
1748 falls back to the previous guessing code."
1749
294520c8
TK
1750TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1751 implementing BATV in an Exim configuration. See NewStuff for the gory
1752 details.
1753
5bd022fe
PH
1754PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1755 Makefile that are specific to HP-UX.
1756
90e9ce59
PH
1757PH/18 If the "use_postmaster" option was set for a recipient callout together
1758 with the "random" option, the postmaster address was used as the MAIL
1759 FROM address for the random test, but not for the subsequent recipient
1760 test. It is now used for both.
1761
5ea81592
PH
1762PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1763 patch removes a few documentation additions to RFC 3028, because the
1764 latest draft now contains them. It adds the new en;ascii-case comparator
1765 and a new error check for 8bit text in MIME parts. Comparator and
1766 require names are now matched exactly. I enabled the subaddress
1767 extension, but it is not well tested yet (read: it works for me)."
1768
c6c2dc1d
PH
1769PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1770 rework some of the code of TK/09 above to avoid the hardwired use of
1771 "%lld" and "long long". Replaced the call to snprintf() with a call to
1772 string_vformat().
1773
fffffe4c
PH
1774PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1775 records point to non-existent hosts", "retry timeout exceeded", and
1776 "retry time not reached for any host after a long failure period".
ca02eafb 1777
9a26b6b2
PH
1778PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1779 experimental DomainKeys support:
1780
1781 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1782 (2) On an error such as an illegally used "control", the wrong name for
1783 the control was given.
1784
1785 These problems did NOT occur unless DomainKeys support was compiled.
1786
4aee0225
PH
1787PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1788
32d668a5
PH
1789PH/24 Added ${if match_ip condition.
1790
8187c3f3
PH
1791PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1792 databases so that it will be absolutely obvious if a crash occurs in the
1793 DB library. This is a regular occurrence (often caused by mis-matched
1794 db.h files).
1795
ff790e47 1796PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1797 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1798 picked up on a user's system that detects such things. There doesn't seem
1799 to be a gcc warning option for this - only an attribute that has to be
1800 put on the function's prototype. It seems that in Fedora Core 4 they have
1801 set this on a number of new functions. No doubt there will be more in due
1802 course.
ff790e47 1803
5417f6d1
PH
1804PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1805 specify a transport. However, if an address that was verified by such a
1806 router was the subject of a callout, Exim crashed because it tried to
1807 read the rcpt_include_affixes from the non-existent transport. Now it
1808 just assumes that the setting of that option is false. This bug was
1809 introduced by 4.51/PH/31.
1810
59cf8544
PH
1811PH/28 Changed -d+all to exclude +memory, because that information is very
1812 rarely of interest, but it makes the output a lot bigger. People tend to
1813 do -d+all out of habit.
1814
e7ad8a65
PH
1815PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1816 code in os-type was giving problems when libc.so lives in lib64, like on
1817 x86_64 Fedora Core.
1818
ade42478
PH
1819PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1820 aren't the modern standard, and it seems that some systems' include files
1821 don't always have them. Exim was already checking for some of the newer
1822 ones like T_AAAA, and defining it itself. I've added checks for all the
1823 record types that Exim uses.
1824
182ad5cf
PH
1825PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1826 not automatically generating a new one, as it is supposed to. This
1827 prevented TLS from working. If the file did exist, but contained invalid
1828 data, a new version was generated, as expected. It was only the case of a
1829 non-existent file that was broken.
1830
b0d9fc80
TK
1831TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1832 with a change in libdomainkeys > 0.64.
1833
1834TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1835 from DNS. If the selector record carries the flag, it now has
1836 precedence over the domain-wide flag.
1837
1838TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1839
47c7a64a
PH
1840PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1841 the use of a port name that isn't defined in /etc/services) occurred, the
1842 message was deferred as in a normal delivery, and thus remained on the
1843 spool, instead of being failed because of the mua_wrapper setting. This
1844 is now fixed, and I tidied up some of the mua_wrapper messages at the
1845 same time.
1846
a388bce4
SC
1847SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1848 the messages in a hash of arrays rather than using individual hashes.
1849 This is a bit cleaner and results in dramatic memory savings, albeit
1850 at a slight CPU cost.
1851
1852SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1853 as requested by Marc Sherman.
1854
1855SC/10 Eximstats: added histograms for user specified patterns as requested
1856 by Marc Sherman.
1857
0793e4ed
SC
1858SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1859
c58b88df
PH
1860PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1861 fopen() in the content-scanning modules that did not already have it.
1862
e7ad8a65 1863
7982096b
PH
1864Exim version 4.51
1865-----------------
1866
1a46a8c5
PH
1867TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1868 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1869
2f079f46 1870TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1871
1872TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1873
1874PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1875 to test Sieve filters that use "vacation".
1876
1877PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1878 that changes the way the GnuTLS parameters are stored in the cache file.
1879 The new format can be generated externally. For backward compatibility,
1880 if the data in the cache doesn't make sense, Exim assumes it has read an
1881 old-format file, and it generates new data and writes a new file. This
1882 means that you can't go back to an older release without removing the
1883 file.
1884
1885PH/03 A redirect router that has both "unseen" and "one_time" set does not
1886 work if there are any delivery delays because "one_time" forces the
1887 parent to be marked "delivered", so its unseen clone is never tried
1888 again. For this reason, Exim now forbids the simultaneous setting of
1889 these two options.
1890
1891PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1892 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1893 entry if you want to know the details. The fix, however, neglected to
1894 consider the case when local delivery batching is involved. The test for
1895 "previously delivered" was not happening when checking to see if an
1896 address could be batched with a previous (undelivered) one; under
1897 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1898 address.
1a46a8c5
PH
1899
1900PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1901 in its include files, and this causes problems building Exim.
1902
1903PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1904 header_syntax) but Exim was just ignoring anything given after a slash.
1905 In particular, this caused confusion with an attempt to use "verify =
1906 reverse_host_lookup/defer_ok". An error is now given when options are
1907 supplied for verify items that do not have them. (Maybe reverse_host_
1908 lookup should have a defer_ok option, but that's a different point.)
1909
1910PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1911 defined by RFC 821) to 2048, because there were problems with some AUTH
1912 commands, and RFC 1869 says the size should be increased for extended
1913 SMTP commands that take arguments.
1914
1915PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1916 Finch).
1917
1918PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1919 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1920
49c2d5ea
PH
1921PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1922 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1923 whatever). Otherwise the password may appear in the log. Following change
1924 PH/42 below, there is no longer a chance of it appearing in a bounce
1925 message.
49c2d5ea 1926
bf759a8b
PH
1927PH/11 Installed exipick version 20050225.0 from John Jetmore.
1928
83364d30
PH
1929PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1930 of its addresses was ever tried. (Bugzilla bug #2.)
1931
7999bbd7
PH
1932PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1933 the result incorrectly in the debug output. (It correctly added a newline
1934 to what was transported.)
1935
7dbf77c9
PH
1936TF/01 Added $received_time.
1937
74e0617f
PH
1938PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1939 commented out examples of how to interface to a virus scanner and to
1940 SpamAssassin. Also added commented examples of av_scanner and
1941 spamd_address settings.
1942
2f079f46
PH
1943PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1944 and controls are allowed in which ACLs. There were a couple of minor
1945 errors. Some of the entries in the conditions table (which is a table of
1946 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1947 negation of where the condition IS allowed.
1948
8c841523
PH
1949PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1950
7766a4f0
PH
1951PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1952 header file does not have a version number, so I've had to invent a new
1953 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1954 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1955 radiusclient), but it was contributed by a Radius user.
1956
8b417f2c
PH
1957PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1958 files or directories, for OpenSSL.
1959
901f42cb
PH
1960PH/19 When an Exim process that is running as root has to create an Exim log
1961 file, it does so in a subprocess that runs as exim:exim so as to get the
1962 ownership right at creation (otherwise, other Exim processes might see
1963 the file with the wrong ownership). There was no test for failure of this
1964 fork() call, which would lead to the process getting stuck as it waited
1965 for a non-existent subprocess. Forks do occasionally fail when resources
1966 run out. I reviewed all the other calls to fork(); they all seem to check
1967 for failure.
1968
f9b9210e
PH
1969PH/20 When checking for unexpected SMTP input at connect time (before writing
1970 the banner), Exim was not dealing correctly with a non-positive return
1971 from the read() function. If the client had disconnected by this time,
1972 the result was a log entry for a synchronization error with an empty
1973 string after "input=" when read() returned zero. If read() returned -1
1974 (an event I could not check), uninitialized data bytes were printed.
1975 There were reports of junk text (parts of files, etc) appearing after
1976 "input=".
1977
54cdb463
PH
1978PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1979
cf00dad6
PH
1980PH/22 Added support for macro redefinition, and (re)definition in between
1981 driver and ACL definitions.
1982
acb1b346
PH
1983PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1984 forgetting to use the resulting value; it was using the unexpanded value.
1985
c5ddb310
PH
1986PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1987 hadn't been configured. The fix is from Juergen Kreileder, who
1988 understands it better than I do:
1989
1990 "Here's what I see happening with three configured cyrus_sasl
1991 authenticators configured (plain, login, cram-md5):
1992
1993 On startup auth_cyrus_sasl_init() gets called for each of these.
1994 This means three calls to sasl_listmech() without a specified mech_list.
1995 => SASL tests which mechs of all available mechs actually work
1996 => three warnings about OTP not working
1997 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1998
1999 With the patch, sasl_listmech() also gets called three times. But now
2000 SASL's mech_list option is set to the server_mech specified in the the
2001 authenticator. Or in other words, the answer from sasl_listmech()
2002 gets limited to just the mech you're testing for (which is different
2003 for each call.)
2004 => the return list contains just 'plain' or 'login', 'cram-md5' or
2005 nothing depending on the value of ob->server_mech.
2006
2007 I've just tested the patch: Authentication still works fine,
2008 unavailable mechs specified in the exim configuration are still
2009 caught, and the auth.log warnings about OTP are gone."
2010
31619da6
PH
2011PH/25 When debugging is enabled, the contents of the command line are added
2012 to the debugging output, even when log_selector=+arguments is not
2013 specified.
2014
bebaf0fc
PH
2015PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2016 answer is "GNU", and only if the return is "GNU/something" is the answer
2017 "Linux".
2018
475fe28a
PH
2019PH/27 $acl_verify_message is now set immediately after the failure of a
2020 verification in an ACL, and so is available in subsequent modifiers. In
2021 particular, the message can be preserved by coding like this:
2022
2023 warn !verify = sender
2024 set acl_m0 = $acl_verify_message
2025
2026 Previously, $acl_verify_message was set only while expanding "message"
2027 and "log_message" when a very denied access.
2028
7e8bec7a
PH
2029PH/28 Modified OS/os.c-Linux with
2030
2031 -#ifndef OS_LOAD_AVERAGE
2032 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2033
2034 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2035 nomenclature these days.)
2036
e4a89c47
PH
2037PH/29 Installed patch from the Sieve maintainer that adds the options
2038 sieve_useraddress and sieve_subaddress to the redirect router.
2039
5ca2a9a1
PH
2040PH/30 In these circumstances:
2041 . Two addresses routed to the same list of hosts;
2042 . First host does not offer TLS;
2043 . First host accepts first address;
2044 . First host gives temporary error to second address;
2045 . Second host offers TLS and a TLS session is established;
2046 . Second host accepts second address.
2047 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2048 and peerdn, if requested) that were in fact used only for the second
2049 address.
7e8bec7a 2050
c688b954
PH
2051PH/31 When doing a callout as part of verifying an address, Exim was not paying
2052 attention to any local part prefix or suffix that was matched by the
2053 router that accepted the address. It now behaves in the same way as it
2054 does for delivery: the affixes are removed from the local part unless
2055 rcpt_include_affixes is set on the transport.
2056
fed77020
PH
2057PH/32 Add the sender address, as F=<...>, to the log line when logging a
2058 timeout during the DATA phase of an incoming message.
2059
7fe1560f
PH
2060PH/33 Sieve envelope tests were broken for match types other than :is. I have
2061 applied a patch sanctioned by the Sieve maintainer.
c688b954 2062
ebb6e6d5
PH
2063PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2064 the uid or gid is negative. A case of a negative gid caused this to be
2065 noticed. The fix allows for either to be negative.
2066
9c4e8f60
PH
2067PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2068 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2069 overlooked.
2070
2071PH/36 The change PH/12 above was broken. Fixed it.
2072
d7174846
PH
2073PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2074 the grounds that routing the same address twice would always produce the
2075 same answer. This might have been true once, but it is certainly no
2076 longer true now. Routing a child address may depend on the previous
2077 routing that produced that child. Some complicated redirection strategies
2078 went wrong when messages had multiple recipients, and made Exim's
2079 behaviour dependent on the order in which the addresses were given.
2080
2081 I have moved the duplicate checking until after the routing is complete.
2082 Exim scans the addresses that are assigned to local and remote
2083 transports, and removes any duplicates. This means that more work will be
2084 done, as duplicates will always all be routed, but duplicates are
2085 presumably rare, so I don't expect this is of any significance.
2086
2087 For deliveries to pipes, files, and autoreplies, the duplicate checking
2088 still happens during the routing process, since they are not going to be
2089 routed further.
2090
cfe75fc3
PH
2091PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2092 It corrects a timeout issue with spamd. This is Ian's comment: "The
2093 background is that sometimes spamd either never reads data from a
2094 connection it has accepted, or it never writes response data. The exiscan
2095 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2096 blindly assumes that writes won't block so it may never time out."
2097
be22d70e
PH
2098PH/39 Allow G after quota size as well as K and M.
2099
0612b098
PH
2100PH/40 The value set for $authenticated_id in an authenticator may not contain
2101 binary zeroes or newlines because the value is written to log lines and
2102 to spool files. There was no check on this. Now the value is run through
2103 the string_printing() function so that such characters are converted to
2104 printable escape sequences.
2105
2e0c1448
PH
2106PH/41 $message_linecount is a new variable that contains the total number of
2107 lines in the message. Compare $body_linecount, which is the count for the
2108 body only.
2109
447d236c
PH
2110PH/42 Exim no longer gives details of delivery errors for specific addresses in
2111 bounce and delay warning messages, except in certain special cases, which
2112 are as follows:
2113
2114 (a) An SMTP error message from a remote host;
2115 (b) A message specified in a :fail: redirection;
2116 (c) A message specified in a "fail" command in a system filter;
2117 (d) A message specified in a FAIL return from the queryprogram router;
2118 (e) A message specified by the cannot_route_message router option.
2119
2120 In these cases only, Exim does include the error details in bounce and
2121 warning messages. There are also a few cases where bland messages such
2122 as "unrouteable address" or "local delivery error" are given.
2123
d20976dc
PH
2124PH/43 $value is now also set for the "else" part of a ${run expansion.
2125
f656d135
PH
2126PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2127 being worked on, but at least Exim now implements the latest version to
2128 play with."
2129
2e2a30b4
PH
2130PH/45 In a pipe transport, although a timeout while waiting for the pipe
2131 process to complete was treated as a delivery failure, a timeout while
2132 writing the message to the pipe was logged, but erroneously treated as a
2133 successful delivery. Such timeouts include transport filter timeouts. For
2134 consistency with the overall process timeout, these timeouts are now
2135 treated as errors, giving rise to delivery failures by default. However,
2136 there is now a new Boolean option for the pipe transport called
2137 timeout_defer, which, if set TRUE, converts the failures into defers for
2138 both kinds of timeout. A transport filter timeout is now identified in
2139 the log output.
2140
9176e9f0
PH
2141PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2142 systems where "make" and "gmake" are different, calling "gmake" at top
2143 level broke things. I've arranged for the value of $(MAKE) to be passed
2144 from the Makefile to this script so that it can call the same version of
2145 "make".
2146
7982096b 2147
bbe902f0
PH
2148A note about Exim versions 4.44 and 4.50
2149----------------------------------------
2150
2151Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2152changes of various kinds. As a consequence, a big documentation update was
2153needed. This delayed the release for rather longer than seemed good, especially
2154in the light of a couple of (minor) security issues. Therefore, the changes
2155that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2156release. So 4.44 and 4.50 are in effect two different branches that both start
2157from 4.43.
2158
2159I have left the 4.50 change log unchanged; it contains all the changes since
21604.43. The change log for 4.44 is below; many of its items are identical to
2161those for 4.50. This seems to be the most sensible way to preserve the
2162historical information.
2163
2164
f7b63901 2165Exim version 4.50
495ae4b0
PH
2166-----------------
2167
5fe762f6
PH
2168 1. Minor wording change to the doc/README.SIEVE file.
2169
139059f6 2170 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2171 computation of the current number of files was incorrect.
495ae4b0 2172
7086e875
PH
2173 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2174 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2175 place.
2176
35af9f61
PH
2177 4. Give more explanation in the error message when the command for a transport
2178 filter fails to execute.
2179
b668c215
PH
2180 5. There are several places where Exim runs a non-Exim command in a
2181 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2182 was being done only for the command run by the queryprogram router. It is
2183 now done for all such subprocesses. The other cases are: ${run, transport
2184 filters, and the commands run by the lmtp and pipe transports.
2185
a494b1e1
PH
2186 6. Added CONFIGURE_GROUP build-time option.
2187
2188 7. Some older OS have a limit of 256 on the maximum number of file
2189 descriptors. Exim was using setrlimit() to set 1000 as a large value
2190 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2191 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2192
c5fcb476
PH
2193 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2194 was an oversight, and furthermore, ever since the addition of extra
2195 controls (e.g. 4.43/32), the checks on when to allow different forms of
2196 "control" were broken. There should now be diagnostics for all cases when a
2197 control that does not make sense is encountered.
2198
69358f02
PH
2199 9. Added the /retain_sender option to "control=submission".
2200
5be20824
PH
220110. $recipients is now available in the predata ACL (oversight).
2202
eb2c0248
PH
220311. Tidy the search cache before the fork to do a delivery from a message
2204 received from the command line. Otherwise the child will trigger a lookup
2205 failure and thereby defer the delivery if it tries to use (for example) a
2206 cached ldap connection that the parent has called unbind on.
2207
2a3eea10
PH
220812. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2209 of $address_data from the recipient verification was clobbered by the
2210 sender verification.
2211
221213. The value of address_data from a sender verification is now available in
2213 $sender_address_data in subsequent conditions in the ACL statement.
2214
23c7ff99
PH
221514. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2216
4deaf07d
PH
221715. Added a new option "connect=<time>" to callout options, to set a different
2218 connection timeout.
2219
926e1192
PH
222016. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2221 was its contents. (It was OK if the option was not defined at all.)
2222
650edc6f
PH
222317. A "Completed" log line is now written for messages that are removed from
2224 the spool by the -Mrm option.
2225
2c7db3f5
PH
222618. New variables $sender_verify_failure and $recipient_verify_failure contain
2227 information about exactly what failed.
2228
3d235903
PH
222919. Added -dd to debug only the daemon process.
2230
7c7ad977
PH
223120. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2232 handles timeouts, both on the server side and network timeouts. Renamed the
2233 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2234
981756db
PH
223521. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2236 It is now set to "smtps".
2237
d4eb88df
PH
223822. $host_address is now set to the target address during the checking of
2239 ignore_target_hosts.
2240
224123. When checking ignore_target_hosts for an ipliteral router, no host name was
2242 being passed; this would have caused $sender_host_name to have been used if
2243 matching the list had actually called for a host name (not very likely,
2244 since this list is usually IP addresses). A host name is now passed as
2245 "[x.x.x.x]".
2246
7d468ab8
PH
224724. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2248 code that specifies a non-restarting handler (typically sigaction() in
2249 modern systems) in an attempt to fix a rare and obscure crash bug.
2250
225125. Narrowed the window for a race in the daemon that could cause it to ignore
2252 SIGCHLD signals. This is not a major problem, because they are used only to
2253 wake it up if nothing else does.
2254
62c0818f
PH
225526. A malformed maildirsize file could cause Exim to calculate negative values
2256 for the mailbox size or file count. Odd effects could occur as a result.
2257 The maildirsize information is now recalculated if the size or filecount
2258 end up negative.
2259
26034054
PH
226027. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2261 support for a long time. Removed HAVE_SYS_VFS_H.
2262
af66f652
PH
226328. Installed the latest version of exipick from John Jetmore.
2264
90af77f4
PH
226529. In an address list, if the pattern was not a regular expression, an empty
2266 subject address (from a bounce message) matched only if the pattern was an
2267 empty string. Non-empty patterns were not even tested. This was the wrong
2268 because it is perfectly reasonable to use an empty address as part of a
2269 database query. An empty address is now tested by patterns that are
2270 lookups. However, all the other forms of pattern expect the subject to
2271 contain a local part and a domain, and therefore, for them, an empty
2272 address still always fails if the pattern is not itself empty.
2273
d8ef3577
PH
227430. Exim went into a mad DNS loop when attempting to do a callout where the
2275 host was specified on an smtp transport, and looking it up yielded more
2276 than one IP address.
2277
5cb8cbc6
PH
227831. Re-factored the code for checking spool and log partition space into a
2279 function that finds that data and another that does the check. The former
2280 is then used to implement four new variables: $spool_space, $log_space,
2281 $spool_inodes, and $log_inodes.
2282
14702f5b
PH
228332. The RFC2047 encoding function was originally intended for short strings
2284 such as real names; it was not keeping to the 75-character limit for
2285 encoded words that the RFC imposes. It now respects the limit, and
2286 generates multiple encoded words if necessary. To be on the safe side, I
2287 have increased the buffer size for the ${rfc2047: expansion operator from
2288 1024 to 2048 bytes.
2289
063b1e99
PH
229033. It is now permitted to omit both strings after an "if" condition; if the
2291 condition is true, the result is "true". As before, when the second string
2292 is omitted, a false condition yields an empty string. This makes it less
2293 cumbersome to write custom ACL and router conditions.
2294
652e1b65
PH
229534. Failure to deliver a bounce message always caused it to be frozen, even if
2296 there was an errors_to setting on the router. The errors_to setting is now
2297 respected.
2298
6f0c9a4f
PH
229935. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2300 canonical form (fully expanded) before being placed in
2301 $sender_host_address.
2302
33397d19
PH
230336. The table in the code that translates DNS record types into text (T_A to
2304 "A" for instance) was missing entries for NS and CNAME. It is just possible
2305 that this could have caused confusion if both these types were looked up
2306 for the same domain, because the text type is used as part of Exim's
2307 per-process caching. But the chance of anyone hitting this buglet seems
2308 very small.
2309
7bb56e1f
PH
231037. The dnsdb lookup has been extended in a number of ways.
2311
2312 (1) There is a new type, "zns", which walks up the domain tree until it
2313 finds some nameserver records. It should be used with care.
2314
ea3bc19b
PH
2315 (2) There is a new type, "mxh", which is like "mx" except that it returns
2316 just the host names, not the priorities.
2317
2318 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2319 looked up. The behaviour when one of the lookups defers can be
2320 controlled by a keyword.
7bb56e1f 2321
ea3bc19b 2322 (4) It is now possible to specify the separator character for use when
7bb56e1f 2323 multiple records are returned.
33397d19 2324
0bcb2a0e
PH
232538. The dnslists ACL condition has been extended: it is now possible to supply
2326 a list of IP addresses and/or domains to be looked up in a particular DNS
2327 domain.
2328
2ac0e484
PH
232939. Added log_selector=+queue_time_overall.
2330
4e1fde53
PH
233140. When running the queue in the test harness, wait just a tad after forking a
2332 delivery process, to get repeatability of debugging output.
2333
de365ded
PH
233441. Include certificate and key file names in error message when GnuTLS fails
2335 to set them up, because the GnuTLS error message doesn't include the name
2336 of the failing file when there is a problem reading it.
2337
f05da2e8
PH
233842. Allow both -bf and -bF in the same test run.
2339
d6453af2
PH
234043. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2341
f7b63901
PH
234244. The "Exiscan patch" is now merged into the mainline Exim source.
2343
234445. Sometimes the final signoff response after QUIT could fail to get
2345 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2346 < 0 before doing a fflush(). This bug looks as though it goes back to the
2347 introduction of TLS in release 3.20, but "sometimes" must have been rare
2348 because the tests only now provoked it.
2349
a444213a
PH
235046. Reset the locale to "C" after calling embedded Perl, in case it was changed
2351 (this can affect the format of dates).
2352
0ec020ea
PH
235347. exim_tidydb, when checking for the continued existence of a message for
2354 which it has found a message-specific retry record, was not finding
2355 messages that were in split spool directories. Consequently, it was
2356 deleting retry records that should have stayed in existence.
2357
b1206957
PH
235848. Steve fixed some bugs in eximstats.
2359
236049. The SPA authentication driver was not abandoning authentication and moving
2361 on to the next authenticator when an expansion was forced to fail,
2362 contradicting the general specification for all authenticators. Instead it
2363 was generating a temporary error. It now behaves as specified.
2364
26dd5a95
PH
236550. The default ordering of permitted cipher suites for GnuTLS was pessimal
2366 (the order specifies the preference for clients). The order is now AES256,
2367 AES128, 3DES, ARCFOUR128.
2368
343b2385
PH
236951. Small patch to Sieve code - explicitly set From: when generating an
2370 autoreply.
2371
1c5466b9
PH
237252. Exim crashed if a remote delivery caused a very long error message to be
2373 recorded - for instance if somebody sent an entire SpamAssassin report back
2374 as a large number of 550 error lines. This bug was coincidentally fixed by
2375 increasing the size of one of Exim's internal buffers (big_buffer) that
2376 happened as part of the Exiscan merge. However, to be on the safe side, I
2377 have made the code more robust (and fixed the comments that describe what
2378 is going on).
2379
55ee9ee3
PH
238053. Now that there can be additional text after "Completed" in log lines (if
2381 the queue_time_overall log selector is set), a one-byte patch to exigrep
2382 was needed to allow it to recognize "Completed" as not the last thing in
2383 the line.
2384
d38f8232
PH
238554. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2386 patch that reportedly fixes this has been added. I am not expert enough to
2387 create a test for it. This is what the patch creator wrote:
2388
2389 "I found a little strange behaviour of ldap code when working with
2390 Windows 2003 AD Domain, where users was placed in more than one
2391 Organization Units. When I tried to give exim partial DN, the exit code
2392 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2393 But simultaneously result of request was absolutely normal ldap result,
2394 so I produce this patch..."
2395
3295e65b
PH
2396 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2397 REFERENCE, so I have modified the code to exclude the patch when that macro
2398 is not defined.
2399
7102e136
PH
240055. Some experimental protocols are using DNS PTR records for new purposes. The
2401 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2402 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2403 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2404 CAN-2005-0021
7102e136 2405
3ca0ba97
PH
240656. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2407
c2bcbe20
PH
240857. Double the size of the debug message buffer (to 2048) so that more of very
2409 long debug lines gets shown.
2410
18ce445d
PH
241158. The exicyclog utility now does better if the number of log files to keep
2412 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2413
1f5b4c3d
PH
241459. Two changes related to the smtp_active_hostname option:
2415
2416 (1) $smtp_active_hostname is now available as a variable.
2417 (2) The default for smtp_banner uses $smtp_active_hostname instead
2418 of $primary_hostname.
2419
b975ba52
PH
242060. The host_aton() function is supposed to be passed a string that is known
2421 to be a valid IP address. However, in the case of IPv6 addresses, it was
2422 not checking this. This is a hostage to fortune. Exim now panics and dies
2423 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2424 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2425 components; fortuitously, this particular loophole had already been fixed
2426 by change 4.50/55 above.
2427
2428 If there are any other similar loopholes, the new check in host_aton()
2429 itself should stop them being exploited. The report I received stated that
2430 data on the command line could provoke the exploit when Exim was running as
2431 exim, but did not say which command line option was involved. All I could
2432 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2433 running as the user.
ea3a6f44 2434 CAN-2005-0021
85b87bc2
PH
2435
243661. There was a buffer overflow vulnerability in the SPA authentication code
2437 (which came originally from the Samba project). I have added a test to the
2438 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2439 CAN-2005-0022
b975ba52 2440
17ffcae7
PH
244162. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2442 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2443
d95f9fdb
PH
244463. The daemon start-up calls getloadavg() while still root for those OS that
2445 need the first call to be done as root, but it missed one case: when
2446 deliver_queue_load_max is set with deliver_drop_privilege. This is
2447 necessary for the benefit of the queue runner, because there is no re-exec
2448 when deliver_drop_privilege is set.
2449
86b8287f
PH
245064. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2451 This has been fixed.
2452
60dc5e56
PH
245365. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2454 was in use, was not putting the data itself into the right store pool;
2455 consequently, it could be overwritten for a subsequent message in the same
2456 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2457 the caching.)
2458
533244af
PH
245966. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2460
a5a28604
PH
246167. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2462 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2463 the function were treating the return as a boolean value, which happened to
2464 work because 0=false and not-0=true, but is not correct code.
2465
7e634d24
PH
246668. The host_aton() function was not handling scoped IPv6 addresses (those
2467 with, for example, "%eth0" on the end) correctly.
2468
3e11c26b
PH
246969. Fixed some compiler warnings in acl.c for the bitmaps specified with
2470 negated items (that is, ~something) in unsigned ints. Some compilers
2471 apparently mutter when there is no cast.
2472
6729cf78
PH
247370. If an address verification called from an ACL failed, and did not produce a
2474 user-specific message (i.e. there was only a "system" message), nothing was
2475 put in $acl_verify_message. In this situation, it now puts the system
2476 message there.
2477
00f00ca5
PH
247871. Change 4.23/11 added synchronization checking at the start of an SMTP
2479 session; change 4.31/43 added the unwanted input to the log line - except
2480 that it did not do this in the start of session case. It now does.
2481
c9bdd01c
PH
248272. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2483 This is wrong and can cause the other end to generate a synchronization
2484 error if it is another Exim or anything else that does the synchronization
2485 check. A QUIT command is no longer sent after a timeout.
2486
d43194df
PH
248773. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2488 during host lookups.
2489
fe5b5d0b
PH
249074. The defer_ok option of callout verification was not working if it was used
2491 when verifying addresses in header lines, that is, for this case:
2492
2493 verify = header_sender/callout=defer_ok
2494
76a2d7ba
PH
249575. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2496 those file descriptors could be used for SMTP connections. If anything
2497 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2498 could be sent to the SMTP client, causing chaos. The daemon now opens
2499 stdin, stdout, and stderr to /dev/null when it puts itself into the
2500 background.
2501
250276. Arrange for output from Perl's "warn" command to be written to Exim's main
2503 log by default. The user can override this with suitable Perl magic.
2504
04f7d5b9
PH
250577. The use of log_message on a "discard" ACL verb, which is supposed to add to
2506 the log message when discard triggers, was not working for the DATA ACL or
2507 for the non-SMTP ACL.
2508
bc60667e
PH
250978. Error message wording change in sieve.c.
2510
bb6e88ff
PH
251179. If smtp_accept_max_per_host was set, the number of connections could be
2512 restricted to fewer than expected, because the daemon was trying to set up
2513 a new connection before checking whether the processes handling previous
2514 connections had finished. The check for completed processes is now done
2515 earlier. On busy systems, this bug wouldn't be noticed because something
2516 else would have woken the daemon, and it would have reaped the completed
2517 process earlier.
2518
1e70f85b
PH
251980. If a message was submitted locally by a user whose login name contained one
2520 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2521 It caused a spool format error. I have fixed the spool reading code. A
2522 related problem was that the "from" clause in the Received: line became
2523 illegal because of the space(s). It is now covered by ${quote_local_part.
2524
252581. Included the latest eximstats from Steve (adds average sizes to HTML Top
2526 tables).
2527
4e01f9d6
PH
252882. Updated OS/Makefile-AIX as per message from Mike Meredith.
2529
1ee1cef2
PH
253083. Patch from Sieve maintainer to fix unterminated string problem in
2531 "vacation" handling.
2532
6e2b4ccc
PH
253384. Some minor changes to the Linux configuration files to help with other
2534 OS variants using glibc.
2535
8e669ac1
PH
253685. One more patch for Sieve to update vacation handling to latest spec.
2537
495ae4b0 2538
bbe902f0
PH
2539----------------------------------------------------
2540See the note above about the 4.44 and 4.50 releases.
2541----------------------------------------------------
2542
2543
2544Exim version 4.44
2545-----------------
2546
2547 1. Change 4.43/35 introduced a bug that caused file counts to be
2548 incorrectly computed when quota_filecount was set in an appendfile
2549 transport
2550
2551 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2552 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2553 place.
2554
2555 3. Give more explanation in the error message when the command for a transport
2556 filter fails to execute.
2557
2558 4. There are several places where Exim runs a non-Exim command in a
2559 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2560 was being done only for the command run by the queryprogram router. It is
2561 now done for all such subprocesses. The other cases are: ${run, transport
2562 filters, and the commands run by the lmtp and pipe transports.
2563
2564 5. Some older OS have a limit of 256 on the maximum number of file
2565 descriptors. Exim was using setrlimit() to set 1000 as a large value
2566 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2567 systems. I've change it so that if it can't get 1000, it tries for 256.
2568
2569 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2570 was an oversight, and furthermore, ever since the addition of extra
2571 controls (e.g. 4.43/32), the checks on when to allow different forms of
2572 "control" were broken. There should now be diagnostics for all cases when a
2573 control that does not make sense is encountered.
2574
2575 7. $recipients is now available in the predata ACL (oversight).
2576
2577 8. Tidy the search cache before the fork to do a delivery from a message
2578 received from the command line. Otherwise the child will trigger a lookup
2579 failure and thereby defer the delivery if it tries to use (for example) a
2580 cached ldap connection that the parent has called unbind on.
2581
2582 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2583 of $address_data from the recipient verification was clobbered by the
2584 sender verification.
2585
258610. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2587 was its contents. (It was OK if the option was not defined at all.)
2588
258911. A "Completed" log line is now written for messages that are removed from
2590 the spool by the -Mrm option.
2591
259212. $host_address is now set to the target address during the checking of
2593 ignore_target_hosts.
2594
259513. When checking ignore_target_hosts for an ipliteral router, no host name was
2596 being passed; this would have caused $sender_host_name to have been used if
2597 matching the list had actually called for a host name (not very likely,
2598 since this list is usually IP addresses). A host name is now passed as
2599 "[x.x.x.x]".
2600
260114. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2602 code that specifies a non-restarting handler (typically sigaction() in
2603 modern systems) in an attempt to fix a rare and obscure crash bug.
2604
260515. Narrowed the window for a race in the daemon that could cause it to ignore
2606 SIGCHLD signals. This is not a major problem, because they are used only to
2607 wake it up if nothing else does.
2608
260916. A malformed maildirsize file could cause Exim to calculate negative values
2610 for the mailbox size or file count. Odd effects could occur as a result.
2611 The maildirsize information is now recalculated if the size or filecount
2612 end up negative.
2613
261417. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2615 support for a long time. Removed HAVE_SYS_VFS_H.
2616
ea3a6f44 261718. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2618
261919. Allow an empty sender to be matched against a lookup in an address list.
2620 Previously the only cases considered were a regular expression, or an
2621 empty pattern.
2622
262320. Exim went into a mad DNS lookup loop when doing a callout where the
2624 host was specified on the transport, if the DNS lookup yielded more than
2625 one IP address.
2626
ea3a6f44
NM
262721. The RFC2047 encoding function was originally intended for short strings
2628 such as real names; it was not keeping to the 75-character limit for
2629 encoded words that the RFC imposes. It now respects the limit, and
2630 generates multiple encoded words if necessary. To be on the safe side, I
2631 have increased the buffer size for the ${rfc2047: expansion operator from
2632 1024 to 2048 bytes.
bbe902f0 2633
ea3a6f44
NM
263422. Failure to deliver a bounce message always caused it to be frozen, even if
2635 there was an errors_to setting on the router. The errors_to setting is now
2636 respected.
bbe902f0
PH
2637
263823. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2639 canonical form (fully expanded) before being placed in
2640 $sender_host_address.
2641
264224. Updated eximstats to version 1.33
2643
ea3a6f44
NM
264425. Include certificate and key file names in error message when GnuTLS fails
2645 to set them up, because the GnuTLS error message doesn't include the name
2646 of the failing file when there is a problem reading it.
bbe902f0
PH
2647
264826. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2649 As per change 25.
bbe902f0 2650
ea3a6f44
NM
265127. Reset the locale to "C" after calling embedded Perl, in case it was changed
2652 (this can affect the format of dates).
bbe902f0 2653
ea3a6f44
NM
265428. exim_tidydb, when checking for the continued existence of a message for
2655 which it has found a message-specific retry record, was not finding
2656 messages that were in split spool directories. Consequently, it was
2657 deleting retry records that should have stayed in existence.
bbe902f0
PH
2658
265929. eximstats updated to version 1.35
2660 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2661 1.35 - bugfix such that pie charts by volume are generated correctly
2662
ea3a6f44
NM
266330. The SPA authentication driver was not abandoning authentication and moving
2664 on to the next authenticator when an expansion was forced to fail,
2665 contradicting the general specification for all authenticators. Instead it
2666 was generating a temporary error. It now behaves as specified.
bbe902f0 2667
ea3a6f44
NM
266831. The default ordering of permitted cipher suites for GnuTLS was pessimal
2669 (the order specifies the preference for clients). The order is now AES256,
2670 AES128, 3DES, ARCFOUR128.
bbe902f0 2671
ea3a6f44
NM
267231. Small patch to Sieve code - explicitly set From: when generating an
2673 autoreply.
bbe902f0 2674
ea3a6f44
NM
267532. Exim crashed if a remote delivery caused a very long error message to be
2676 recorded - for instance if somebody sent an entire SpamAssassin report back
2677 as a large number of 550 error lines. This bug was coincidentally fixed by
2678 increasing the size of one of Exim's internal buffers (big_buffer) that
2679 happened as part of the Exiscan merge. However, to be on the safe side, I
2680 have made the code more robust (and fixed the comments that describe what
2681 is going on).
bbe902f0 2682
ea3a6f44
NM
268333. Some experimental protocols are using DNS PTR records for new purposes. The
2684 keys for these records are domain names, not reversed IP addresses. The
2685 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2686 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2687 CAN-2005-0021
2688
ea3a6f44
NM
268934. The host_aton() function is supposed to be passed a string that is known
2690 to be a valid IP address. However, in the case of IPv6 addresses, it was
2691 not checking this. This is a hostage to fortune. Exim now panics and dies
2692 if the condition is not met. A case was found where this could be provoked
2693 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2694 components; fortuitously, this particular loophole had already been fixed
2695 by change 4.50/55 or 4.44/33 above.
2696
2697 If there are any other similar loopholes, the new check in host_aton()
2698 itself should stop them being exploited. The report I received stated that
2699 data on the command line could provoke the exploit when Exim was running as
2700 exim, but did not say which command line option was involved. All I could
2701 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2702 running as the user.
bbe902f0
PH
2703 CAN-2005-0021
2704
ea3a6f44
NM
270535. There was a buffer overflow vulnerability in the SPA authentication code
2706 (which came originally from the Samba project). I have added a test to the
2707 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2708 CAN-2005-0022
2709
ea3a6f44
NM
271036. The daemon start-up calls getloadavg() while still root for those OS that
2711 need the first call to be done as root, but it missed one case: when
2712 deliver_queue_load_max is set with deliver_drop_privilege. This is
2713 necessary for the benefit of the queue runner, because there is no re-exec
2714 when deliver_drop_privilege is set.
bbe902f0 2715
ea3a6f44
NM
271637. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2717 was in use, was not putting the data itself into the right store pool;
2718 consequently, it could be overwritten for a subsequent message in the same
2719 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2720 the caching.)
bbe902f0 2721
ea3a6f44
NM
272238. Sometimes the final signoff response after QUIT could fail to get
2723 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2724 < 0 before doing a fflush(). This bug looks as though it goes back to the
2725 introduction of TLS in release 3.20, but "sometimes" must have been rare
2726 because the tests only now provoked it.
bbe902f0
PH
2727
2728
495ae4b0
PH
2729Exim version 4.43
2730-----------------
2731
2732 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2733 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2734 Now it returns an integer. A number of calls were still expecting a T/F
2735 return. Fortuitously, in all cases, the tests worked in OK situations,
2736 which is the norm. However, things would have gone wrong on any write
2737 failures on the smtp file descriptor. This function is used when sending
2738 messages over SMTP and also when doing verify callouts.
2739
2740 2. When Exim is called to do synchronous delivery of a locally submitted
2741 message (the -odf or -odi options), it no longer closes stderr before doing
2742 the delivery.
2743
2744 3. Implemented the mua_wrapper option.
2745
2746 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2747
2748 5. Implemented the functions header_remove(), header_testname(),
2749 header_add_at_position(), and receive_remove_recipient(), and exported them
2750 to local_scan().
2751
2752 6. If an ACL "warn" statement specified the addition of headers, Exim already
2753 inserted X-ACL-Warn: at the start if there was no header name. However, it
2754 was not making this test for the second and subsequent header lines if
2755 there were newlines in the string. This meant that an invalid header could
2756 be inserted if Exim was badly configured.
2757
2758 7. Allow an ACL "warn" statement to add header lines at the start or after all
2759 the Received: headers, as well as at the end.
2760
2761 8. Added the rcpt_4xx retry error code.
2762
2763 9. Added postmaster_mailfrom=xxx to callout verification option.
2764
276510. Added mailfrom=xxxx to the callout verification option, for verify=
2766 header_sender only.
2767
276811. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2769 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2770
277112. Inserted some casts to stop certain compilers warning when using pointer
2772 differences as field lengths or precisions in printf-type calls (mostly
2773 affecting debugging statements).
2774
277513. Added optional readline() support for -be (dynamically loaded).
2776
277714. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2778 same clock tick as a message's arrival, so that its received time was the
2779 same as the "first fail" time on the retry record, and that message
2780 remained on the queue past the ultimate address timeout, every queue runner
2781 would try a delivery (because it was past the ultimate address timeout) but
2782 after another failure, the ultimate address timeout, which should have then
2783 bounced the address, did not kick in. This was a "< instead of <=" error;
2784 in most cases the first failure would have been in the next clock tick
2785 after the received time, and all would be well.
2786
278715. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2788 being recognized when the domain list was tested by the match_domain
2789 condition in an expansion string.
2790
279116. Added the ${str2b64: operator.
2792
279317. Exim was always calling setrlimit() to set a large limit for the number of
2794 processes, without checking whether the existing limit was already
2795 adequate. (It did check for the limit on file descriptors.) Furthermore,
2796 errors from getrlimit() and setrlimit() were being ignored. Now they are
2797 logged to the main and panic logs, but Exim does carry on, to try to do its
2798 job under whatever limits there are.
2799
280018. Imported PCRE 5.0.
2801
280219. Trivial typo in log message " temporarily refused connection" (the leading
2803 space).
2804
280520. If the log selector return_path_on_delivery was set and an address was
2806 redirected to /dev/null, the delivery process crashed because it assumed
2807 that a return path would always be set for a "successful" delivery. In this
2808 case, the whole delivery is bypassed as an optimization, and therefore no
2809 return path is set.
2810
281121. Internal re-arrangement: the function for sending a challenge and reading
2812 a response while authentication was assuming a zero-terminated challenge
2813 string. It's now changed to take a pointer and a length, to allow for
2814 binary data in such strings.
2815
281622. Added the cyrus_sasl authenticator (code supplied by MBM).
2817
281823. Exim was not respecting finduser_retries when seeking the login of the
2819 uid under which it was called; it was always trying 10 times. (The default
2820 setting of finduser_retries is zero.) Also, it was sleeping after the final
2821 failure, which is pointless.
2822
282324. Implemented tls_on_connect_ports.
2824
282525. Implemented acl_smtp_predata.
2826
282726. If the domain in control=submission is set empty, Exim assumes that the
2828 authenticated id is a complete email address when it generates From: or
2829 Sender: header lines.
2830
283127. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2832 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2833 chown and chgrp in /bin and hostname in /usr/bin.
2834
283528. Exim was keeping the "process log" file open after each use, just as it
2836 does for the main log. This opens the possibility of it remaining open for
2837 long periods when the USR1 signal hits a daemon. Occasional processlog
2838 errors were reported, that could have been caused by this. Anyway, it seems
2839 much more sensible not to leave this file open at all, so that is what now
2840 happens.
2841
284229. The long-running daemon process does not normally write to the log once it
2843 has entered its main loop, and it closes the log before doing so. This is
2844 so that log files can straightforwardly be renamed and moved. However,
2845 there are a couple of unusual error situations where the daemon does write
2846 log entries, and I had neglected to close the log afterwards.
2847
284830. The text of an SMTP error response that was received during a remote
2849 delivery was being truncated at 512 bytes. This is too short for some of
2850 the long messages that one sometimes sees. I've increased the limit to
2851 1024.
2852
285331. It is now possible to make retry rules that apply only when a message has a
2854 specific sender, in particular, an empty sender.
2855
285632. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2857 it possible to be selective about when SMTP synchronization is enforced.
2858
285933. Added "control = caseful_local_part" and "control = "caselower_local_part".
2860
286132. Implemented hosts_connection_nolog.
2862
286333. Added an ACL for QUIT.
2864
286534. Setting "delay_warning=" to disable warnings was not working; it gave a
2866 syntax error.
2867
286835. Added mailbox_size and mailbox_filecount to appendfile.
2869
287036. Added control = no_multiline_responses to ACLs.
2871
287237. There was a bug in the logic of the code that waits for the clock to tick
2873 in the case where the clock went backwards by a substantial amount such
2874 that the microsecond fraction of "now" was more than the microsecond
2875 fraction of "then" (but the whole seconds number was less).
2876
287738. Added support for the libradius Radius client library this is found on
2878 FreeBSD (previously only the radiusclient library was supported).
2879
2880
2881Exim version 4.42
2882-----------------
2883
2884 1. When certain lookups returned multiple values in the form name=value, the
2885 quoting of the values was not always being done properly. Specifically:
2886 (a) If the value started with a double quote, but contained no whitespace,
2887 it was not quoted.
2888 (b) If the value contained whitespace other than a space character (i.e.
2889 tabs or newlines or carriage returns) it was not quoted.
2890 This fix has been applied to the mysql and pgsql lookups by writing a
2891 separate quoting function and calling it from the lookup code. The fix
2892 should probably also be applied to nisplus, ibase and oracle lookups, but
2893 since I cannot test any of those, I have not disturbed their existing code.
2894
2895 2. A hit in the callout cache for a specific address caused a log line with no
2896 reason for rejecting RCPT. Now it says "Previous (cached) callout
2897 verification failure".
2898
2899 3. There was an off-by-one bug in the queryprogram router. An over-long
2900 return line was truncated at 256 instead of 255 characters, thereby
2901 overflowing its buffer with the terminating zero. As well as fixing this, I
2902 have increased the buffer size to 1024 (and made a note to document this).
2903
2904 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2905 when Exim is waiting for an SMTP response from a remote server, Exim
2906 restarts its select() call on the socket, thereby resetting its timeout.
2907 This is not a problem when such interrupts are rare. Somebody set up a cron
2908 job to run exiwhat every 2 minutes, which is less than the normal select()
2909 timeout (5 or 10 minutes). This meant that the select() timeout never
2910 kicked in because it was always reset. I have fixed this by comparing the
2911 time when an interrupt arrives with the time at the start of the first call
2912 to select(). If more time than the timeout has elapsed, the interrupt is
2913 treated as a timeout.
2914
2915 5. Some internal re-factoring in preparation for the addition of Sieve
2916 extensions (by MH). In particular, the "personal" test is moved to a
2917 separate function, and given an option for scanning Cc: and Bcc: (which is
2918 not set for Exim filters).
2919
2920 6. When Exim created an email address using the login of the caller as the
2921 local part (e.g. when creating a From: or Sender: header line), it was not
2922 quoting the local part when it contained special characters such as @.
2923
2924 7. Installed new OpenBSD configuration files.
2925
2926 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2927 try to make them clearer.
2928
2929 9. Callout options, other than the timeout value, were being ignored when
2930 verifying sender addresses in header lines. For example, when using
2931
2932 verify = header_sender/callout=no_cache
2933
2934 the cache was (incorrectly) being used.
2935
293610. Added a missing instance of ${EXE} to the exim_install script; this affects
2937 only the Cygwin environment.
2938
293911. When return_path_on_delivery was set as a log selector, if different remote
2940 addresses in the same message used different return paths and parallel
2941 remote delivery occurred, the wrong values would sometimes be logged.
2942 (Whenever a remote delivery process finished, the return path value from
2943 the most recently started remote delivery process was logged.)
2944
294512. RFC 3848 specifies standard names for the "with" phrase in Received: header
2946 lines when AUTH and/or TLS are in use. This is the "received protocol"
2947 field. Exim used to use "asmtp" for authenticated SMTP, without any
2948 indication (in the protocol name) for TLS use. Now it follows the RFC and
2949 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2950 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2951 names appear in log lines as well as in Received: header lines.
2952
295313. Installed MH's patches for Sieve to add the "copy" and "vacation"
2954 extensions, and comparison tests, and to fix some bugs.
2955
295614. Changes to the "personal" filter test:
2957
2958 (1) The test was buggy in that it was just doing the equivalent of
2959 "contains" tests on header lines. For example, if a user's address was
2960 anne@some.where, the "personal" test would incorrectly be true for
2961
2962 To: susanne@some.where
2963
2964 This test is now done by extracting each address from the header in turn,
2965 and checking the entire address. Other tests that are part of "personal"
2966 are now done using regular expressions (for example, to check local parts
2967 of addresses in From: header lines).
2968
2969 (2) The list of non-personal local parts in From: addresses has been
2970 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2971 taken from the Sieve specification recommendations.
2972
2973 (3) If the message contains any header line starting with "List-" it is
2974 treated as non-personal.
2975
2976 (4) The test for "circular" in the Subject: header line has been removed
2977 because it now seems ill-conceived.
2978
297915. Minor typos in src/EDITME comments corrected.
2980
298116. Installed latest exipick from John Jetmore.
2982
298317. If headers_add on a router specified a text string that was too long for
2984 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2985 of string_sprintf() is now avoided.
2986
298718. $message_body_size was not set (it was always zero) when running the DATA
2988 ACL and the local_scan() function.
2989
299019. For the "mail" command in an Exim filter, no default was being set for
2991 the once_repeat time, causing a random time value to be used if "once" was
2992 specified. (If the value happened to be <= 0, no repeat happened.) The
2993 default is now 0s, meaning "never repeat". The "vacation" command was OK
2994 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2995 (I found it when inspecting the code).
2996
299720. There is now an overall timeout for performing a callout verification. It
2998 defaults to 4 times the callout timeout, which applies to individual SMTP
2999 commands during the callout. The overall timeout applies when there is more
3000 than one host that can be tried. The timeout is checked before trying the
3001 next host. This prevents very long delays if there are a large number of
3002 hosts and all are timing out (e.g. when the network connections are timing
3003 out). The value of the overall timeout can be changed by specifying an
3004 additional sub-option for "callout", called "maxwait". For example:
3005
3006 verify = sender/callout=5s,maxwait=20s
3007
300821. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
3009 to the end before writing, but this should make it even safer).
3010
301122. Exim was forgetting that it had advertised PIPELINING for the second and
3012 subsequent messages on an SMTP connection. It was also not resetting its
3013 memory on STARTTLS and an internal HELO.
3014
301523. When Exim logs an SMTP synchronization error within a session, it now
3016 records whether PIPELINING has been advertised or not.
3017
301824. Added 3 instances of "(long int)" casts to time_t variables that were being
3019 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3020 rather than long int.
3021
302225. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3023
302426. Added the never_mail option to autoreply.
3025
3026
3027Exim version 4.41
3028-----------------
3029
3030 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3031 crash if the getsockname() call failed; this can happen if a connection is
3032 closed very soon after it is established. The problem was simply in the
3033 order in which certain operations were done, causing Exim to try to write
3034 to the SMTP stream before it had set up the file descriptor. The bug has
3035 been fixed by making things happen in the correct order.
3036
3037
3038Exim version 4.40
3039-----------------
3040
3041 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3042 before the connection was closed, thus losing the rejection response.
3043
3044 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3045 some early Solaris releases, but causes trouble in current releases where
3046 socklen_t is defined.
3047
3048 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3049 always exist.
3050
3051 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3052 configured.
3053
3054 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3055 that releasing the top of it at the end releases what was used for sub-
3056 expansions (unless the block got too big). However, discard this block if
3057 the first thing is a variable or header, so that we can use its block when
3058 it is dynamic (useful for very large $message_headers, for example).
3059
3060 6. Lookups now cache *every* query, not just the most recent. A new, separate
3061 store pool is used for this. It can be recovered when all lookup caches are
3062 flushed. Lookups now release memory at the end of their result strings.
3063 This has involved some general refactoring of the lookup sources.
3064
3065 7. Some code has been added to the store_xxx() functions to reduce the amount
3066 of flapping under certain conditions.
3067
3068 8. log_incoming_interface used to affect only the <= reception log lines. Now
3069 it causes the local interface and port to be added to several more SMTP log
3070 lines, for example "SMTP connection from", and rejection lines.
3071
3072 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3073
307410. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3075
307611. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3077 could be overwritten at the end of the current message (or the start of a
3078 new message if it was set in a HELO ACL). The value is now preserved for
3079 the duration of the SMTP connection.
3080
308112. If a transport had a headers_rewrite setting, and a matching header line
3082 contained an unqualified address, that address was qualified, even if it
3083 did not match any rewriting rules. The underlying bug was that the values
3084 of the flags that permit the existence of unqualified sender and recipient
3085 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3086 non-local messages, and by -bnq for local messages) were not being
3087 preserved with the message after it was received.
3088
308913. When Exim was logging an SMTP synchronization error, it could sometimes log
3090 "next input=" as part of the text comprising the host identity instead of
3091 the correct text. The code was using the same buffer for two different
3092 strings. However, depending on which order the printing function evaluated
3093 its arguments, the bug did not always show up. Under Linux, for example, my
3094 test suite worked just fine.
3095
309614. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3097 doesn't work with some older versions of Perl. It has been changed to "my",
3098 which in any case is probably the better facility to use.
3099
310015. A really picky compiler found some instances of statements for creating
3101 error messages that either had too many or two few arguments for the format
3102 string.
3103
310416. The size of the buffer for calls to the DNS resolver has been increased
3105 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3106 for addresses that have a lot of PTR records. This alleviates a problem; it
3107 does not fully solve it.
3108
310917. A dnsdb lookup for PTR records that receives more data than will fit in the
3110 buffer now truncates the list and logs the incident, which is the same
3111 action as happens when Exim is looking up a host name and its aliases.
3112 Previously in this situation something unpredictable would happen;
3113 sometimes it was "internal error: store_reset failed".
3114
311518. If a server dropped the connection unexpectedly when an Exim client was
3116 using GnuTLS and trying to read a response, the client delivery process
3117 crashed while trying to generate an error log message.
3118
311919. If a "warn" verb in an ACL added multiple headers to a message in a single
3120 string, for example:
3121
3122 warn message = H1: something\nH2: something
3123
3124 the text was added as a single header line from Exim's point of view
3125 though it ended up OK in the delivered message. However, searching for the
3126 second and subsequent header lines using $h_h2: did not work. This has been
3127 fixed. Similarly, if a system filter added multiple headers in this way,
3128 the routers could not see them.
3129
313020. Expanded the error message when iplsearch is called with an invalid key to
3131 suggest using net-iplsearch in a host list.
3132
313321. When running tests using -bh, any delays imposed by "delay" modifiers in
3134 ACLs are no longer actually imposed (and a message to that effect is
3135 output).
3136
313722. If a "gecos" field in a passwd entry contained escaped characters, in
3138 particular, if it contained a \" sequence, Exim got it wrong when building
3139 a From: or a Sender: header from that name. A second bug also caused
3140 incorrect handling when an unquoted " was present following a character
3141 that needed quoting.
3142
314323. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3144 was not being matched caselessly.
3145
314624. Arranged for all hyphens in the exim.8 source to be escaped with
3147 backslashes.
3148
314925. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3150 properly. Recipient callout cache records were still being keyed to include
3151 the sender, even when use_sender was set false. This led to far more
3152 callouts that were necessary. The sender is no longer included in the key
3153 when use_sender is false.
3154
315526. Added "control = submission" modifier to ACLs.
3156
315727. Added the ${base62d: operator to decode base 62 numbers.
3158
315928. dnsdb lookups can now access SRV records.
3160
316129. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3162 the configuration file.
3163
316430. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3165 (-v) mode. This makes the output for a verbose queue run more intelligible.
3166
316731. Added a use_postmaster feature to recipient callouts.
3168
316932. Added the $body_zerocount variable, containing the number of binary zero
3170 bytes in the message body.
3171
317233. The time of last modification of the "new" subdirectory is now used as the
3173 "mailbox time last read" when there is a quota error for a maildir
3174 delivery.
3175
317634. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3177
317835. Added +ignore_unknown as a special item in host lists.
3179
318036. Code for decoding IPv6 addresses in host lists is now included, even if
3181 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3182 address was recognized as an IP address, but was then not correctly decoded
3183 into binary, causing unexpected and incorrect effects when compared with
3184 another IP address.
3185
3186
3187Exim version 4.34
3188-----------------
3189
3190 1. Very minor rewording of debugging text in manualroute to say "list of
3191 hosts" instead of "hostlist".
3192
3193 2. If verify=header_syntax was set, and a header line with an unqualified
3194 address (no domain) and a large number of spaces between the end of the
3195 name and the colon was received, the reception process suffered a buffer
3196 overflow, and (when I tested it) crashed. This was caused by some obsolete
3197 code that should have been removed. The fix is to remove it!
3198
3199 3. When running in the test harness, delay a bit after writing a bounce
3200 message to get a bit more predictability in the log output.
3201
3202 4. Added a call to search_tidyup() just before forking a reception process. In
3203 theory, someone could use a lookup in the expansion of smtp_accept_max_
3204 per_host which, without the tidyup, could leave open a database connection.
3205
3206 5. Added the variables $recipient_data and $sender_data which get set from a
3207 lookup success in an ACL "recipients" or "senders" condition, or a router
3208 "senders" option, similar to $domain_data and $local_part_data.
3209
3210 6. Moved the writing of debug_print from before to after the "senders" test
3211 for routers.
3212
3213 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3214 problems for message scanning, either using a data ACL, or using
3215 local_scan() because the Received: header was not generated till after they
3216 were called (in order to set the time as the time of reception completion).
3217 I have revised the way this works. The header is now generated after the
3218 body is received, but before the ACL or local_scan() are called. After they
3219 are run, the timestamp in the header is updated.
3220
3221
3222Exim version 4.33
3223-----------------
3224
3225 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3226 before starting a queue runner without re-exec. This happened only when
3227 deliver_drop_privilege was set or when the Exim user was set to root. The
3228 effect of the bug was that timeouts during subsequent deliveries caused
3229 crashes instead of being properly handled. The handler is now left at its
3230 default (and expected) setting.
3231
3232 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3233 message, again when deliver_drop_privilege is set or Exim is run as root.
3234 The bug described in (1) was not present in this case, but the tidying up
3235 of the other signals was missing. I have made the two cases consistent.
3236
3237 3. The ignore_target_hosts setting on a manualroute router was being ignored
3238 for hosts that were looked up using the /MX notation.
3239
3240 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3241 in domain lists.
3242
3243 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3244 operated on the sender address. After changing the $sender_address to <>
3245 for the sender address verify, Exim was re-instated it as the original
3246 (before rewriting) address, but remembering that it had rewritten it, so it
3247 wasn't rewriting it again. This bug also had the effect of breaking the
3248 sender address verification caching when the sender address was rewritten.
3249
3250 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3251 This has been changed so that if the ip literal address matches
3252 ignore_target_hosts, the router declines.
3253
3254 7. Added expansion conditions match_domain, match_address, and match_local_
3255 part (NOT match_host).
3256
3257 8. The placeholder for the Received: header didn't have a length field set.
3258
3259 9. Added code to Exim itself and to exim_lock to test for a specific race
3260 condition that could lead to file corruption when using MBX delivery. The
3261 issue is with the lockfile that is created in /tmp. If this file is removed
3262 after a process has opened it but before that process has acquired a lock,
3263 there is the potential for a second process to recreate the file and also
3264 acquire a lock. This could lead to two Exim processes writing to the file
3265 at the same time. The added code performs the same test as UW imapd; it
3266 checks after acquiring the lock that its file descriptor still refers to
3267 the same named file.
3268
326910. The buffer for building added header lines was of fixed size, 8192 bytes.
3270 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3271 when Exim is built.
3272
327311. Added the smtp_active_hostname option. If used, this will typically be made
3274 to depend on the incoming interface address. Because $interface_address is
3275 not set up until the daemon has forked a reception process, error responses
3276 that can happen earlier (such as "too many connections") no longer contain
3277 a host name.
3278
327912. If an expansion in a condition on a "warn" statement fails because a lookup
3280 defers, the "warn" statement is abandoned, and the next ACL statement is
3281 processed. Previously this caused the whole ACL to be aborted.
3282
328313. Added the iplsearch lookup type.
3284
328514. Added ident_timeout as a log selector.
3286
328715. Added tls_certificate_verified as a log selector.
3288
328916. Added a global option tls_require_ciphers (compare the smtp transport
3290 option of the same name). This controls incoming TLS connections.
3291
329217. I finally figured out how to make tls_require_ciphers do a similar thing
3293 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3294 before starting the TLS session.
3295
329618. Tabs are now shown as \t in -bP output.
3297
329819. If the log selector return_path_on_delivery was set, Exim crashed when
3299 bouncing a message because it had too many Received: header lines.
3300
330120. If two routers both had headers_remove settings, and the first one included
3302 a superfluous trailing colon, the final name in the first list and the
3303 first name in the second list were incorrectly joined into one item (with a
3304 colon in the middle).
3305
3306
3307Exim version 4.32
3308-----------------
3309
3310 1. Added -C and -D options to the exinext utility, mainly to make it easier
3311 to include in the automated testing, but these could be helpful when
3312 multiple configurations are in use.
3313
3314 2. The exinext utility was not formatting the output nicely when there was
3315 an alternate port involved in the retry record key, nor when there was a
3316 message id as well (for retries that were specific to a specific message
3317 and a specific host). It was also confused by IPv6 addresses, because of
3318 the additional colons they contain. I have fixed the IPv4 problem, and
3319 patched it up to do a reasonable job for IPv6.
3320
3321 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3322 delivery, the log line now contains "pipelined" if PIPELINING was used.
3323
3324 4. An SMTP transport process used to panic and die if the bind() call to set
3325 an explicit outgoing interface failed. This has been changed; it is now
3326 treated in the same way as a connect() failure.
3327
3328 5. A reference to $sender_host_name in the part of a conditional expansion
3329 that was being skipped was still causing a DNS lookup. This no longer
3330 occurs.
3331
3332 6. The def: expansion condition was not recognizing references to header lines
3333 that used bh_ and bheader_.
3334
3335 7. Added the _cache feature to named lists.
3336
3337 8. The code for checking quota_filecount in the appendfile transport was
3338 allowing one more file than it should have been.
3339
3340 9. For compatibility with Sendmail, the command line option
3341
3342 -prval:sval
3343
3344 is equivalent to
3345
3346 -oMr rval -oMs sval
3347
3348 and sets the incoming protocol and host name (for trusted callers). The
3349 host name and its colon can be omitted when only the protocol is to be set.
3350 Note the Exim already has two private options, -pd and -ps, that refer to
3351 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3352 "s", but I don't think that's a major issue.
3353
335410. A number of refactoring changes to the code, none of which should affect
3355 Exim's behaviour:
3356
3357 (a) The number of logging options was getting close to filling up the
3358 32-bit word that was used as a bit map. I have split them into two classes:
3359 those that are passed in the argument to log_write(), and those that are
3360 only ever tested independently outside of that function. These are now in
3361 separate 32-bit words, so there is plenty of room for expansion again.
3362 There is no change in the user interface or the logging behaviour.
3363
3364 (b) When building, for example, log lines, the code previously used a
3365 macro that called string_cat() twice, in order to add two strings. This is
3366 not really sufficiently general. Furthermore, there was one instance where
3367 it was actually wrong because one of the argument was used twice, and in
3368 one call a function was used. (As it happened, calling the function twice
3369 did not affect the overall behaviour.) The macro has been replaced by a
3370 function that can join an arbitrary number of extra strings onto a growing
3371 string.
3372
3373 (c) The code for expansion conditions now uses a table and a binary chop
3374 instead of a serial search (which was left over from when there were very
3375 few conditions). Also, it now recognizes conditions like "pam" even when
3376 the relevant support is not compiled in: a suitably worded error message is
3377 given if an attempt is made to use such a condition.
3378
337911. Added ${time_interval:xxxxx}.
3380
338112. A bug was causing one of the ddress fields not to be passed back correctly
3382 from remote delivery subprocesses. The field in question was not being
3383 subsequently used, so this caused to problems in practice.
3384
338513. Added new log selectors queue_time and deliver_time.
3386
338714. Might have fixed a bug in maildirsizefile handling that threw up
3388 "unexpected character" debug warnings, and recalculated the data
3389 unnecessarily. In any case, I expanded the warning message to give more
3390 information.
3391
339215. Added the message "Restricted characters in address" to the statements in
3393 the default ACL that block characters like @ and % in local parts.
3394
339516. Change 71 for release 4.31 proved to be much less benign that I imagined.
3396 Three changes have been made:
3397
3398 (a) There was a serious bug; a negative response to MAIL caused the whole
3399 recipient domain to be cached as invalid, thereby blocking all messages
3400 to all local parts at the same domain, from all senders. This bug has
3401 been fixed. The domain is no longer cached after a negative response to
3402 MAIL if the sender used is not empty.
3403
3404 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3405 been restored.
3406
3407 (c) A new callout option, "use_sender" has been added for people who want
3408 the modified behaviour.
3409
3410
3411Exim version 4.31
3412-----------------
3413
3414 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3415 Larry Rosenman.
3416
3417 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3418 indeed breaks things for older releases.
3419
3420 3. Added additional logging to the case where there is a problem reading data
3421 from a filter that is running in a subprocess using a pipe, in order to
3422 try to track down a specific problem.
3423
3424 4. Testing facility fudge: when running in the test harness and attempting
3425 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3426 getting "No route to host". Convert this to a timeout.
3427
3428 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3429 warning.
3430
3431 6. Some OS don't have socklen_t but use size_t instead. This affects the
3432 fifth argument of getsockopt() amongst other things. This is now
3433 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3434 can be set for individual OS. I have set it for SunOS5, OSF1, and
3435 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3436 some earlier ones do not.
3437
3438 7. Change 4.30/15 was not doing the test caselessly.
3439
3440 8. The standard form for an IPv6 address literal was being rejected by address
3441 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3442 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3443 this, as well as the form without the "IPv6" on the front (but only when
3444 address literals are enabled, of course).
3445
3446 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3447
344810. Exim crashed if a message with an empty sender address specified by -f
3449 encountered a router with an errors_to setting. This could be provoked only
3450 by a command such as
3451
3452 exim -f "" ...
3453
3454 where an empty string was supplied; "<>" did not hit this bug.
3455
345611. Installed PCRE release 4.5.
3457
345812. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3459 remained set. It is now erased.
3460
346113. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3462 times from message ids (which are base 36 rather than the normal 62).
3463
346414. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3465 were being counted as actual protocol errors, and logged if the log
3466 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3467 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3468 and DATA following a set of rejected RCPTs do not count as protocol errors.
3469 In other words, Exim assumes they were pipelined, though this may not
3470 actually be the case. Of course, in all cases the client gets an
3471 appropriate error code.
3472
347315. If a lookup fails in an ACL condition, a message about the failure may
3474 be available; it is used if testing the ACL cannot continue, because most
3475 such messages specify what the cause of the deferral is. However, some
3476 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3477 that caused an old message to be retained and used if a later statement
3478 caused a defer, replacing the real cause of the deferral.
3479
348016. If an IP address had so many PTR records that the DNS lookup buffer
3481 was not large enough to hold them, Exim could crash while trying to process
3482 the truncated data. It now detects and logs this case.
3483
348417. Further to 4.21/58, another change has been made: if (and only if) the
3485 first line of a message (the first header line) ends with CRLF, a bare LF
3486 in a subsequent header line has a space inserted after it, so as not to
3487 terminate the header.
3488
348918. Refactoring: tidied an ugly bit of code in appendfile that copied data
3490 unnecessarily, used atoi() instead of strtol(), and didn't check the
3491 termination when getting file sizes from file names by regex.
3492
349319. Completely re-implemented the support for maildirsize files, in the light
3494 of a number of problems with the previous contributed implementation
3495 (4.30/29). In particular:
3496
3497 . If the quota is zero, the maildirsize file is maintained, but no quota is
3498 imposed.
3499
3500 . If the maildir directory does not exist, it is created before any attempt
3501 to write a maildirsize file.
3502
3503 . The quota value in the file is just a cache; if the quota is changed in
3504 the transport, the new value overrides.
3505
3506 . A regular expression is available for excluding directories from the
3507 count.
3508
350920. The autoreply transport checks the characters in options that define the
3510 message's headers; it allows continued headers, but it was checking with
3511 isspace() after an embedded newline instead of explicitly looking for a
3512 space or a tab.
3513
351421. If all the "regular" hosts to which an address was routed had passed their
3515 expiry times, and had not reached their retry times, the address was
3516 bounced, even if fallback hosts were defined. Now Exim should go on to try
3517 the fallback hosts.
3518
351922. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3520 equivalent code in the SMTP transport. Some hosts send humungous responses
3521 to HELO/EHLO, more than 1024 it seems.
3522
352323. Refactoring: code in filter.c used (void *) for "any old type" but this
3524 gives compiler warnings in some environments. I've now done it "properly",
3525 using a union.
3526
352724. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3528 (because of problems with the built-in one) was declared to return uschar *
3529 instead of char *, causing compiler failure.
3530
353125. Fixed a file descriptor leak when processing alias/forward files.
3532
353326. Fixed a minor format string issue in dbfn.c.
3534
353527. Typo in exim.c: ("dmbnz" for "dbmnz").
3536
353728. If a filter file refered to $h_xxx or $message_headers, and the headers
3538 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3539 become corrupted.
3540
354129. When a sender address is verified, it is cached, to save repeating the test
3542 when there is more than one recipient in a message. However, when the
3543 verification involves a callout, it is possible for different callout
3544 options to be set for different recipients. It is too complicated to keep
3545 track of this in the cache, so now Exim always runs a verification when a
3546 callout is required, relying on the callout cache for the optimization.
3547 The overhead is duplication of the address routing, but this should not be
3548 too great.
3549
355030. Fixed a bug in callout caching. If a RCPT command caused the sender address
3551 to be verified with callout=postmaster, and the main callout worked but the
3552 postmaster check failed, the verification correctly failed. However, if a
3553 subsequent RCPT command asked for sender verification *without* the
3554 postmaster check, incorrect caching caused this verification also to fail,
3555 incorrectly.
3556
355731. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3558 it was not caching the DNS options (qualify_single, search_parents) that
3559 were used when the lookup failed. A subsequent lookup with different
3560 options therefore always gave the same answer, though there were cases
3561 where it should not have. (Example: a "domains = !$mx_any" option on a
3562 dnslookup router: the "domains" option is always processed without any
3563 widening, but the router might have qualify_single set.) Now Exim uses the
3564 cached value only when the same options are set.
3565
356632. Added John Jetmore's "exipick" utility to the distribution.
3567
356833. GnuTLS: When an attempt to start a TLS session fails for any reason other