TK/01
[exim.git] / doc / doc-txt / ChangeLog
CommitLineData
2e30fa9d 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.507 2007/05/11 08:50:42 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
eb4c0de6 31
b4ed4da0
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32Exim version 4.67
33-----------------
34
22ad45c9
MH
35MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
36 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
37 Jan Srzednicki.
38
b4ed4da0
PH
39PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
40 issue a MAIL command.
41
431b7361
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42PH/02 In an ACL statement such as
43
44 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
45
46 if a client was not listed at all, or was listed with a value other than
47 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
48 the condition was not true (as it should be), so access was not denied.
49 The bug was that the ! inversion was incorrectly passed on to the second
50 item. This has been fixed.
51
52PH/03 Added additional dnslists conditions == and =& which are different from
53 = and & when the dns lookup returns more than one IP address.
54
83da1223
PH
55PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
56 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
57
54fc8428
PH
58PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
59 FSYNC, which compiles an option called disable_fsync that allows for
60 bypassing fsync(). The documentation is heavily laced with warnings.
61
34c5e8dd
SC
62SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
63
bbe15da8
PH
64PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
65 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
66 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
67 including adding "make clean"; (3) Added -fPIC when compiling the test
68 dynamically loaded module, to get rid of a warning.
69
0e8a9471
MH
70MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
71 message fails, move_frozen_messages = true and ignore_bounce_errors_after
72 = 0s. The bug is otherwise harmless.
73
f0872424
PH
74PH/07 There was a bug in the dovecot authenticator such that the value of
75 $auth1 could be overwritten, and so not correctly preserved, after a
76 successful authentication. This usually meant that the value preserved by
77 the server_setid option was incorrect.
78
b01dd148
PH
79PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
80
6bf342e1
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81PH/09 Installed PCRE release 7.0.
82
273f34d0
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83PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
84 run for batched SMTP input. It is now run at the start of every message
85 in the batch. While fixing this I discovered that the process information
86 (output by running exiwhat) was not always getting set for -bs and -bS
87 input. This is fixed, and it now also says "batched" for BSMTP.
88
cf8b11a5
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89PH/11 Added control=no_pipelining.
90
41c7c167
PH
91PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
92 patch, slightly modified), and move the expansion of helo_data till after
93 the connection is made in the smtp transport (so it can use these
94 values).
95
9c57cbc0
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96PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
97
f3f065bb
PH
98PH/14 Added log_selector = +pid.
99
047bdd8c
PH
100PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
101
0ce9abe6
PH
102PH/16 Add ${if forany and ${if forall.
103
0e22dfd1
PH
104PH/17 Added dsn_from option to vary the From: line in DSNs.
105
4c590bd1
PH
106PH/18 Flush SMTP output before performing a callout, unless control =
107 no_callout_flush is set.
108
09945f1e
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109PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
110 was true (the default) a successful delivery failed to delete the retry
111 item, thus causing premature timeout of the address. The bug is now
112 fixed.
113
c51b8e75
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114PH/20 Added hosts_avoid_pipelining to the smtp transport.
115
e28326d8
PH
116PH/21 Long custom messages for fakedefer and fakereject are now split up
117 into multiline reponses in the same way that messages for "deny" and
118 other ACL rejections are.
119
75b1493f
PH
120PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
121 with slight modification.
122
7c5214ec
PH
123PH/23 Applied sieve patches from the maintainer "tracking the latest notify
124 draft, changing the syntax and factoring some duplicate code".
125
4311097e
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126PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
127 for deliveries of the second and subsequent messages over the same SMTP
128 connection.
129
29f89cad
PH
130PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
131 ${reduce, with only minor "tidies".
132
5e687460
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133SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
134
c3611384
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135PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
136 expansion side effects.
137
5a11a7b4
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138PH/27 When a message times out after an over-quota error from an Exim-imposed
139 quota, the bounce message says "mailbox is full". This message was not
140 being given when it was a system quota that was exceeded. It now should
141 be the same.
142
0e20aff9
MH
143MH/03 Made $recipients available in local_scan(). local_scan() already has
144 better access to the recipient list through recipients_list[], but
145 $recipients can be useful in postmaster-provided expansion strings.
146
ca86f471
PH
147PH/28 The $smtp_command and $smtp_command_argument variables were not correct
148 in the case of a MAIL command with additional options following the
149 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
150 were accidentally chopped off.
151
a14e5636
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152PH/29 SMTP synchronization checks are implemented when a command is read -
153 there is a check that no more input is waiting when there shouldn't be
154 any. However, for some commands, a delay in an ACL can mean that it is
155 some time before the response is written. In this time, more input might
156 arrive, invalidly. So now there are extra checks after an ACL has run for
157 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
158 pipelining has not been advertised.
159
ec95d1a6
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160PH/30 MH's patch to allow iscntrl() characters to be list separators.
161
42855d71
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162PH/31 Unlike :fail:, a custom message specified with :defer: was not being
163 returned in the SMTP response when smtp_return_error_details was false.
164 This has been fixed.
165
57c2c631
PH
166PH/32 Change the Dovecot authenticator to use read() and write() on the socket
167 instead of the C I/O that was originally supplied, because problems were
168 reported on Solaris.
169
58c01c94
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170PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
171 Exim which did not show up earlier: it was assuming that a call to
172 SSL_CTX_set_info_callback() might give an error value. In fact, there is
173 no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
174 was a macro that became an assignment, so it seemed to work. This has
175 changed to a proper function call with a void return, hence the compile
176 error. Exim's code has been fixed.
177
dee5a20a
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178PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
179 cpus.
180
d2ee6114
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181PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
182
b2d5182b
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183PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
184
79749a79
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185PH/37 If a message is not accepted after it has had an id assigned (e.g.
186 because it turns out to be too big or there is a timeout) there is no
3ce62588
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187 "Completed" line in the log. When some messages of this type were
188 selected by exigrep, they were listed as "not completed". Others were
189 picked up by some special patterns. I have improved the selection
190 criteria to be more general.
79749a79 191
c456d9bb
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192PH/38 The host_find_failed option in the manualroute router can now be set
193 to "ignore", to completely ignore a host whose IP address cannot be
194 found. If all hosts are ignored, the behaviour is controlled by the new
195 host_all_ignored option.
196
cd9868ec
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197PH/39 In a list of hosts for manualroute, if one item (either because of multi-
198 homing or because of multiple MX records with /mx) generated more than
199 one IP address, and the following item turned out to be the local host,
200 all the secondary addresses of the first item were incorrectly removed
201 from the list, along with the local host and any following hosts (which
202 is what is supposed to happen).
203
ebeaf996
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204PH/40 When Exim receives a message, it writes the login name, uid, and gid of
205 whoever called Exim into the -H file. In the case of the daemon it was
206 behaving confusingly. When first started, it used values for whoever
207 started the daemon, but after a SIGHUP it used the Exim user (because it
208 calls itself on a restart). I have changed the code so that it now always
209 uses the Exim user.
210
2679d413
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211PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
212 message are rejected with the same error (e.g. no authentication or bad
213 sender address), and a DATA command is nevertheless sent (as can happen
214 with PIPELINING or a stupid MUA), the error message that was given to the
215 RCPT commands is included in the rejection of the DATA command. This is
216 intended to be helpful for MUAs that show only the final error to their
217 users.
218
84024b72
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219PH/42 Another patch from the Sieve maintainer.
220
8005d38e
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221SC/02 Eximstats - Differentiate between permanent and temporary rejects.
222 Eximstats - Fixed some broken HTML links and added missing column headers
223 (Jez Hancock).
224 Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
225 columns for Rejects, Temp Rejects, Ham, and Spam rows.
226
3298c6c6
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227SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
228
a43a27c5
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229PH/43 Yet another patch from the Sieve maintainer.
230
58eb016e 231PH/44 I found a way to check for a TCP/IP connection going away before sending
563b63fa
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232 the response to the final '.' that terminates a message, but only in the
233 case where the client has not sent further data following the '.'
234 (unfortunately, this is allowed). However, in many cases there won't be
235 any further data because there won't be any more messages to send. A call
236 to select() can be used: if it shows that the input is "ready", there is
237 either input waiting, or the socket has been closed. An attempt to read
238 the next input character can distinguish the two cases. Previously, Exim
58eb016e 239 would have sent an OK response which the client would never have see.
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240 This could lead to message repetition. This fix should cure that, at
241 least in a lot of common cases.
58eb016e 242
b43a74ea
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243PH/45 Do not advertise STARTTLS in response to HELP unless it would be
244 advertised in response to EHLO.
245
b4ed4da0 246
5dd1517f
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247Exim version 4.66
248-----------------
249
250PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
251 fixed by 4.65/MH/01 (is this a record?) are fixed:
252
253 (i) An empty string was always treated as zero by the numeric comparison
254 operators. This behaviour has been restored.
255
256 (ii) It is documented that the numeric comparison operators always treat
257 their arguments as decimal numbers. This was broken in that numbers
258 starting with 0 were being interpreted as octal.
259
260 While fixing these problems I realized that there was another issue that
261 hadn't been noticed. Values of message_size_limit (both the global option
262 and the transport option) were treated as octal if they started with 0.
263 The documentation was vague. These values are now always treated as
264 decimal, and I will make that clear in the documentation.
265
266
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267Exim version 4.65
268-----------------
269
270TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
271 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
272 versions. (#438)
273
d6066548
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274MH/01 Don't check that the operands of numeric comparison operators are
275 integers when their expansion is in "skipping" mode (fixes bug
276 introduced by 4.64-PH/07).
277
4362ff0d
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278PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
279 child addresses, Exim now panics and dies. Previously, because the count
280 is held in a short int, deliveries were likely to be lost. As such a
281 large number of recipients for a single message is ridiculous
282 (performance will be very, very poor), I have chosen to impose a limit
283 rather than extend the field.
284
93cfa765 285
944e9e9c
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286Exim version 4.64
287-----------------
aa41d2de 288
21d74bd9
TK
289TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
290 leftover -K file (the existence of which was triggered by #402).
291 While we were at it, introduced process PID as part of the -K
292 filename. This should rule out race conditions when creating
293 these files.
294
295TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
296 processing considerably. Previous code took too long for large mails,
297 triggering a timeout which in turn triggers #401.
298
299TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
300 in the DK code in transports.c. sendfile() is not really portable,
301 hence the _LINUX specificness.
944e9e9c
TF
302
303TF/01 In the add_headers option to the mail command in an Exim filter,
304 there was a bug that Exim would claim a syntax error in any
305 header after the first one which had an odd number of characters
306 in the field name.
307
2b1c6e3a
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308PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
309 callout verification, Exim cached a "reject" for the entire domain. This
310 is correct for most verifications, but it is not correct for a recipient
311 verification with use_sender or use_postmaster set, because in that case
312 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
313 case of MAIL FROM:<> rejection from other early rejections (e.g.
314 rejection of HELO). When verifying a recipient using a non-null MAIL
315 address, the cache is ignored if it shows MAIL FROM:<> rejection.
316 Whatever the result of the callout, the value of the domain cache is
317 left unchanged (for any other kind of callout, getting as far as trying
318 RCPT means that the domain itself is ok).
319
1f872c80
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320PH/02 Tidied a number of unused variable and signed/unsigned warnings that
321 gcc 4.1.1 threw up.
322
323PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
324 manifest itself as EPIPE rather than ECONNECT. When tidying away a
325 session, the daemon ignores ECONNECT errors and logs others; it now
326 ignores EPIPE as well.
327
d203e649
PH
328PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
329 (quoted-printable decoding).
330
cc2ed8f7 331PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 332 later the small subsequent patch to fix an introduced bug.
f951fd57 333
ddfcd446
PH
334PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
335
d45b1de8
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336PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
337
338PH/08 An error is now given if message_size_limit is specified negative.
339
38a0a95f 340PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 341 to be given (somewhat) arbitrary names.
38a0a95f 342
a2405d83
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343JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
344 in 4.64-PH/09.
345
346JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
347 miscellaneous code fixes
348
6ea85e9a
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349PH/10 Added the log_reject_target ACL modifier to specify where to log
350 rejections.
351
26da7e20
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352PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
353 hostname. This is wrong, because it relates to the incoming message (and
354 probably the interface on which it is arriving) and not to the outgoing
355 callout (which could be using a different interface). This has been
356 changed to use the value of the helo_data option from the smtp transport
357 instead - this is what is used when a message is actually being sent. If
358 there is no remote transport (possible with a router that sets up host
359 addresses), $smtp_active_hostname is used.
6ea85e9a 360
14aa5a05 361PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 362 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
PH
363 (a) The code assumed that strncpy() returns a negative number on buffer
364 overflow, which isn't the case. Replaced with Exim's string_format()
365 function.
366 (b) There were several signed/unsigned issues. I just did the minimum
367 hacking in of casts. There is scope for a larger refactoring.
368 (c) The code used strcasecmp() which is not a standard C function.
369 Replaced with Exim's strcmpic() function.
370 (d) The code set only $1; it now sets $auth1 as well.
371 (e) A simple test gave the error "authentication client didn't specify
372 service in request". It would seem that Dovecot has changed its
373 interface. Fortunately there's a specification; I followed it and
374 changed what the client sends and it appears to be working now.
375
ff75a1f7
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376PH/13 Added $message_headers_raw to provide the headers without RFC 2047
377 decoding.
378
e6f6568e
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379PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
380 address A is aliased to B and C, where B exists and C does not. Without
381 -v the output is "A verified" because verification stops after a
382 successful redirection if more than one address is generated. However,
383 with -v the child addresses are also verified. Exim was outputting "A
384 failed to verify" and then showing the successful verification for C,
385 with its parentage. It now outputs "B failed to verify", showing B's
386 parentage before showing the successful verification of C.
387
d6f6e0dc
PH
388PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
389 look up a TXT record in a specific list after matching in a combined
390 list.
391
322050c2
PH
392PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
393 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
394 they consult the DNS. I had assumed they would set it the way they
395 wanted; and indeed my experiments on Linux seem to show that in some
396 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
397 To be on the safe side, however, I have now made the interface to
398 host_find_byname() similar to host_find_bydns(), with an argument
399 containing the DNS resolver options. The host_find_byname() function now
400 sets these options at its start, just as host_find_bydns() does. The smtp
401 transport options dns_qualify_single and dns_search_parents are passed to
402 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
403 of host_find_byname() use the default settings of RES_DEFNAMES
404 (qualify_single) but not RES_DNSRCH (search_parents).
405
08955dd3
PH
406PH/17 Applied (a modified version of) Nico Erfurth's patch to make
407 spool_read_header() do less string testing, by means of a preliminary
408 switch on the second character of optional "-foo" lines. (This is
409 overdue, caused by the large number of possibilities that now exist.
410 Originally there were few.) While I was there, I also converted the
411 str(n)cmp tests so they don't re-test the leading "-" and the first
412 character, in the hope this might squeeze out yet more improvement.
413
1eccaa59
PH
414PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
415 flag allowing group syntax was set by the header_syntax check but not
416 turned off, possible causing trouble later; (2) The flag was not being
417 set at all for the header_verify test, causing "group"-style headers to
418 be rejected. I have now set it in this case, and also caused header_
419 verify to ignore an empty address taken from a group. While doing this, I
420 came across some other cases where the code for allowing group syntax
421 while scanning a header line wasn't quite right (mostly, not resetting
422 the flag correctly in the right place). These bugs could have caused
423 trouble for malformed header lines. I hope it is now all correct.
424
602e59e5
PH
425PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
426 with the "reply" argument non-NULL. The code, however (which originally
427 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
428 but it didn't always do it. This confused somebody who was copying the
429 code for some other use. I have removed all the tests.
430
411ef850
PH
431PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
432 feature that was used to support insecure browsers during the U.S. crypto
433 embargo. It requires special client support, and Exim is probably the
434 only MTA that supported it -- and would never use it because real RSA is
435 always available. This code has been removed, because it had the bad
436 effect of slowing Exim down by computing (never used) parameters for the
437 RSA_EXPORT functionality.
438
7befa435
PH
439PH/21 On the advice of Timo Sirainen, added a check to the dovecot
440 authenticator to fail if there's a tab character in the incoming data
441 (there should never be unless someone is messing about, as it's supposed
442 to be base64-encoded). Also added, on Timo's advice, the "secured" option
443 if the connection is using TLS or if the remote IP is the same as the
444 local IP, and the "valid-client-cert option" if a client certificate has
445 been verified.
446
48da4259 447PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
16ff981e
PH
448 authenticators. This can be used for authorization after authentication
449 succeeds. (In the case of plaintext, it servers for both authentication
450 and authorization.)
451
48da4259
PH
452PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
453 if any retry times were supplied.
454
d1d5595c
PH
455PH/24 Exim crashed if verify=helo was activated during an incoming -bs
456 connection, where there is no client IP address to check. In this
457 situation, the verify now always succeeds.
458
0ef732d9
PH
459PH/25 Applied John Jetmore's -Mset patch.
460
328895cc
PH
461PH/26 Added -bem to be like -Mset, but loading a message from a file.
462
fd700877
PH
463PH/27 In a string expansion for a processed (not raw) header when multiple
464 headers of the same name were present, leading whitespace was being
465 removed from all of them, but trailing whitespace was being removed only
466 from the last one. Now trailing whitespace is removed from each header
f6c332bd
PH
467 before concatenation. Completely empty headers in a concatenation (as
468 before) are ignored.
fd700877 469
8dce1a6f
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470PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
471 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
472
17af4a17
PH
473PH/29 [Removed. This was a change that I later backed out, and forgot to
474 correct the ChangeLog entry (that I had efficiently created) before
475 committing the later change.]
f6c332bd
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476
477PH/30 Exim was sometimes attempting to deliver messages that had suffered
478 address errors (4xx response to RCPT) over the same connection as other
479 messages routed to the same hosts. Such deliveries are always "forced",
480 so retry times are not inspected. This resulted in far too many retries
481 for the affected addresses. The effect occurred only when there were more
482 hosts than the hosts_max_try setting in the smtp transport when it had
483 the 4xx errors. Those hosts that it had tried were not added to the list
484 of hosts for which the message was waiting, so if all were tried, there
485 was no problem. Two fixes have been applied:
486
487 (i) If there are any address or message errors in an SMTP delivery, none
488 of the hosts (tried or untried) are now added to the list of hosts
489 for which the message is waiting, so the message should not be a
490 candidate for sending over the same connection that was used for a
491 successful delivery of some other message. This seems entirely
492 reasonable: after all the message is NOT "waiting for some host".
493 This is so "obvious" that I'm not sure why it wasn't done
494 previously. Hope I haven't missed anything, but it can't do any
495 harm, as the worst effect is to miss an optimization.
496
497 (ii) If, despite (i), such a delivery is accidentally attempted, the
498 routing retry time is respected, so at least it doesn't keep
499 hammering the server.
500
c1114884
PH
501PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
502 in ${readsocket because some servers need this prod.
503
7a0743eb
PH
504PH/32 Added some extra debug output when updating a wait-xxx database.
505
0d85fa3f
PH
506PH/33 The hint "could be header name not terminated by colon", which has been
507 given for certain expansion errors for a long time, was not being given
508 for the ${if def:h_colon_omitted{... case.
509
1bf43b78
PH
510PH/34 The spec says: "With one important exception, whenever a domain list is
511 being scanned, $domain contains the subject domain." There was at least
512 one case where this was not true.
513
520de300
PH
514PH/35 The error "getsockname() failed: connection reset by peer" was being
515 written to the panic log as well as the main log, but it isn't really
516 panic-worthy as it just means the connection died rather early on. I have
517 removed the panic log writing for the ECONNRESET error when getsockname()
518 fails.
519
48c7f9e2
PH
520PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
521 runs only) independently of the message's sender address. This meant
522 that, if the 4xx error was in fact related to the sender, a different
523 message to the same recipient with a different sender could confuse
524 things. In particualar, this can happen when sending to a greylisting
525 server, but other circumstances could also provoke similar problems.
526 I have changed the default so that the retry time for these errors is now
527 based a combination of the sender and recipient addresses. This change
528 can be overridden by setting address_retry_include_sender=false in the
529 smtp transport.
530
99ea1c86
PH
531PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
532 remote server are returned as part of bounce messages. This was not
533 happening for LMTP over a pipe (the lmtp transport), but now it is the
534 same for both kinds of LMTP.
535
a2042e78
PH
536PH/38 Despite being documented as not happening, Exim was rewriting addresses
537 in header lines that were in fact CNAMEs. This is no longer the case.
538
4fbcfc2e
PH
539PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
540 and queue runs started by the daemon processed all messages. This has
541 been fixed so that -R and -S can now usefully be given with -q<time>.
542
aa41d2de
PH
543PH/40 Import PCRE release 6.7 (fixes some bugs).
544
af561417
PH
545PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
546
3cc66b45
PH
547PH/42 Give an error if -q is specified more than once.
548
194cc0e4
PH
549PH/43 Renamed the variables $interface_address and $interface_port as
550 $received_ip_address and $received_port, to make it clear that these
551 values apply to message reception, and not to the outgoing interface when
552 a message is delivered. (The old names remain recognized, of course.)
553
a401ddaa
PH
554PH/44 There was no timeout on the connect() call when using a Unix domain
555 socket in the ${readsocket expansion. There now is.
556
4e88a19f
PH
557PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
558 be meaningful with "accept".
559
d7d7b289
SC
560SC/01 Eximstats V1.43
561 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
562
563SC/02 Eximstats V1.44
564 Use a glob alias rather than an array ref in the generated
565 parser. This improves both readability and performance.
566
567SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
568 Collect SpamAssassin and rejection statistics.
569 Don't display local sender or destination tables unless
570 there is data to show.
571 Added average volumes into the top table text output.
572
573SC/04 Eximstats V1.46
574 Collect data on the number of addresses (recipients)
575 as well as the number of messages.
576
577SC/05 Eximstats V1.47
578 Added 'Message too big' to the list of mail rejection
579 reasons (thanks to Marco Gaiarin).
580
581SC/06 Eximstats V1.48
582 Mainlog lines which have GMT offsets and are too short to
583 have a flag are now skipped.
584
585SC/07 Eximstats V1.49 (Alain Williams)
586 Added the -emptyok flag.
587
588SC/08 Eximstats V1.50
589 Fixes for obtaining the IP address from reject messages.
590
0ea2a468
JJ
591JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
592 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
593 whitesspace changes from 4.64-PH/27
594
595JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
596 match 4.64-PH/13
597
598JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
599 are found, allow negative numbers in numeric criteria)
600
601JJ/06 exipick.20061117.2, added new $message_body_missing variable
602
603JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
604 to match changes made in 4.64-PH/43
605
8a10f5a4
PH
606PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
607
30e18802
PH
608PH/47 Put in an explicit test for a DNS lookup of an address record where the
609 "domain" is actually an IP address, and force a failure. This locks out
610 those revolvers/nameservers that support "A-for-A" lookups, in
611 contravention of the specifications.
612
55728a4f
PH
613PH/48 When a host name was looked up from an IP address, and the subsequent
614 forward lookup of the name timed out, the host name was left in
615 $sender_host_name, contrary to the specification.
d7d7b289 616
d7837193
PH
617PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
618 restricted to single-key lookups, Exim was not diagnosing an error if
619 * or *@ was used with a query-style lookup.
620
87054a31
PH
621PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
622
ea2c01d2
MH
623MH/01 local_scan ABI version incremented to 1.1. It should have been updated
624 long ago, but noone interested enough thought of it. Let's just say that
625 the "1.1" means that there are some new functions that weren't there at
626 some point in the past.
627
e4fa6968
PH
628PH/51 Error processing for expansion failure of helo_data from an smtp
629 transport during callout processing was broken.
630
56f5d9bd
PH
631PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
632 tested/used via the -bh/-bhc/-bs options.
633
922e1c28
PH
634PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
635 bug, fixed in subsequent PCRE releases).
636
21eb6e72
PH
637PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
638 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
639
a0540757
PH
640PH/55 Check for a ridiculously long file name in exim_dbmbuild.
641
944e9e9c 642
478be7b0
SC
643Exim version 4.63
644-----------------
645
646SC/01 Use a glob alias rather than an array ref in eximstats generated
647 parser. This improves both readability and performance.
648
649SC/02 Collect SpamAssassin and rejection statistics in eximstats.
650 Don't display local sender or destination tables in eximstats unless
651 there is data to show.
652 Added average volumes into the eximstats top table text output.
653
654SC/03 Collect data on the number of addresses (recipients) as well
655 as the number of messages in eximstats.
656
2b965a65
TF
657TF/01 Correct an error in the documentation for the redirect router. Exim
658 does (usually) call initgroups() when daemonizing.
478be7b0 659
45b91596
PH
660TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
661 with consistent privilege compared to when running as a daemon.
478be7b0 662
c59f5781
TF
663TF/03 Note in the spec that $authenticated_id is not set for local
664 submissions from trusted users.
665
90fc3069
TF
666TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
667 Thanks to Dean Brooks <dean@iglou.com> for the patch.
668
6083aca0
TF
669TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
670 by adding some example configuration directives to the default
671 configuration file. A little bit of work is required to uncomment the
672 directives and define how usernames and passwords are checked, but
673 there is now a framework to start from.
674
765b530f
PH
675PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
676 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
677 without this. I don't know how relevant this is to other LDAP libraries.
678
4e167a8c
PH
679PH/02 Add the verb name to the "unknown ACL verb" error.
680
4608d683
PH
681PH/03 Magnus Holmgren's patch for filter_prepend_home.
682
b8dc3e4a
PH
683PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
684
5418e93b
PH
685PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
686 directory not expanded when it should be if an expanded home directory
687 was set for the address (which is overridden by the transport).
688
b4a9bda2
PH
689PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
690 libradius.
691
45b91596
PH
692PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
693 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
694 because it is too late at that time, and has no effect.
695
5547e2c5
PH
696PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
697 security issue with \' (bugzilla #107). I could not use the
698 PQescapeStringConn() function, because it needs a PGconn value as one of
699 its arguments.
700
dbcef0ea
PH
701PH/08 When testing addresses using -bt, indicate those final addresses that
702 are duplicates that would not cause an additional delivery. At least one
703 person was confused, thinking that -bt output corresponded to deliveries.
704 (Suppressing duplicates isn't a good idea as you lose the information
705 about possibly different redirections that led to the duplicates.)
706
25257489
PH
707PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
708 systems where poll() doesn't work, in particular OS X.
709
c816d124
PH
710PH/10 Added more information to debugging output for retry time not reached.
711
a9ccd69a
PH
712PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
713 operations in malware.c.
714
75fa1910
PH
715PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
716 signatures.
717
a7d7aa58
PH
718PH/13 If write_rejectlog was set false when logging was sent to syslog with
719 syslog_duplication set false, log lines that would normally be written
720 both the the main log and to the reject log were not written to syslog at
721 all.
722
42119b09
PH
723PH/14 In the default configuration, change the use of "message" in ACL warn
724 statements to "add_header".
725
41609df5
PH
726PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
727 not followed by a command (e.g. "seen endif").
728
a5bd321b
PH
729PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
730 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
731 latter.
732
e85a7ad5 733PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
734 so that it is now:
735
e85a7ad5
PH
736 ${if or { \
737 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
738 { match{$h_precedence:}{(?i)bulk|list|junk} } \
739 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
740 }{no}{yes}}
741
e85a7ad5
PH
742 The Auto-Submitted: and various List- headers are standardised, whereas I
743 don't think Precedence: ever was.
5dff5817 744
d8fe1c03
PH
745PH/18 Refactored debugging code in route_finduser() to show more information,
746 in particular, the error code if getpwnam() issues one.
747
16282d2b
PH
748PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
749 This is apparently needed in addition to the PH/07 change above to avoid
750 any possible encoding problems.
751
35d40a98
PH
752PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
753 but not after initializing Perl.
754
034d99ab
PH
755PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
756 output them only if debugging. By default they are written stderr,
757 apparently, which is not desirable.
758
6ec97b1b
PH
759PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
760 queries.
761
e22ca4ac
JJ
762JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
763 --not options
764
765JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
766
33d73e3b
PH
767PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
768 authenticated or an ident call has been made. Suppress the default
769 values for $authenticated_id and $authenticated_sender (but permit -oMai
770 and -oMas) when testing with -bh.
771
9ecb03f3
PH
772PH/24 Re-jigged the order of the tests in the default configuration so that the
773 tests for valid domains and recipients precede the DNS black list and CSA
774 tests, on the grounds that those ones are more expensive.
775
084efe8d
PH
776PH/25 Exim was not testing for a space following SMTP commands such as EHLO
777 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
778 This bug exists in every version of Exim that I still have, right back to
779 0.12.
780
366fc9f0
PH
781PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
782 However, an attempt to turn on case-sensitivity in a regex key by
783 including (?-i) didn't work because the subject string was already
784 lowercased, and the effects were non-intuitive. It turns out that a
785 one-line patch can be used to allow (?-i) to work as expected.
786
c59f5781 787
c887c79e
TF
788Exim version 4.62
789-----------------
790
791TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
792 other effects) broke the use of negated acl sub-conditions.
793
1cce3af8
PH
794PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
795 patch).
796
afb3eaaf
PH
797PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
798 "Deny" causes Exim to reject the incoming connection with a 554 error.
799 Unfortunately, if there is a major crisis, such as a disk failure,
800 tcp-wrappers gives "deny", whereas what one would like would be some
801 kind of temporary error. A kludge has been added to help with this.
802 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
803 554 error is used if errno is still zero or contains ENOENT (which occurs
804 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
805 451 error is used.
806
e173618b
PH
807PH/03 Add -lutil to the default FreeBSD LIBS setting.
808
dd16e114
PH
809PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
810 errors. Otherwise a message that provokes a temporary error (when other
811 messages do not) can cause a whole host to time out.
812
f7fd3850
PH
813PH/05 Batch deliveries by appendfile and pipe transports did not work when the
814 addresses were routed directly to files or pipes from a redirect router.
815 File deliveries just didn't batch; pipe deliveries might have suffered
816 odd errors.
817
d87df92c
PH
818PH/06 A failure to get a lock for a hints database would erroneously always say
819 "Failed to get write lock", even when it was really a read lock.
820
7e9f683d
PH
821PH/07 The appendfile transport was creating MBX lock files with a fixed mode
822 of 0600. This has been changed to use the value of the lockfile_mode
823 option (which defaults to 0600).
824
bfad5236
PH
825PH/08 Applied small patch from the Sieve maintainer.
826
01c490df
PH
827PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
828 folder from quota calculations, a direct delivery into this folder messed
829 up the contents of the maildirsize file. This was because the regex was
830 used only to exclude .Trash (or whatever) when the size of the mailbox
831 was calculated. There was no check that a delivery was happening into an
832 excluded directory. This bug has been fixed by ignoring all quota
833 processing for deliveries into excluded directories.
834
d6629cdc
PH
835PH/10 Added the maildirfolder_create_regex option to appendfile.
836
1cce3af8 837
214e2000
PH
838Exim version 4.61
839-----------------
840
841PH/01 The code for finding all the local interface addresses on a FreeBSD
842 system running IPv6 was broken. This may well have applied to all BSD
843 systems, as well as to others that have similar system calls. The broken
844 code found IPv4 interfaces correctly, but gave incorrect values for the
845 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
846 that it would not match correctly against @[] and not recognize the IPv6
847 addresses as local.
848
f9daeae0
PH
849PH/02 The ipliteral router was not recognizing addresses of the form user@
850 [ipv6:....] because it didn't know about the "ipv6:" prefix.
851
7e66e54d
PH
852PH/03 Added disable_ipv6.
853
c8ea1597
PH
854PH/04 Changed $reply_address to use the raw form of the headers instead of the
855 decoded form, because it is most often used to construct To: headers
856 lines in autoreplies, and the decoded form may well be syntactically
857 invalid. However, $reply_address has leading white space removed, and all
858 newlines turned into spaces so that the autoreply transport does not
859 grumble.
860
911f6fde
PH
861PH/05 If group was specified without a user on a router, and no group or user
862 was specified on a transport, the group from the router was ignored.
863
47ca6d6c
PH
864PH/06 Increased the number of ACL variables to 20 of each type, and arranged
865 for visible compile-time settings that can be used to change these
866 numbers, for those that want even more. Backwards compatibility with old
867 spool files has been maintained. However, going back to a previous Exim
868 release will lost any variables that are in spool files.
869
ed0e9820
PH
870PH/07 Two small changes when running in the test harness: increase delay when
871 passing a TCP/IP connection to a new process, in case the original
872 process has to generate a bounce, and remove special handling of
873 127.0.0.2 (sic), which is no longer necessary.
874
eff37e47
PH
875PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
876 be the same on different OS.
877
1921d2ea
PH
878PH/09 Moved a debug statement in filter processing to avoid a race problem when
879 testing.
880
b3f69ca8
JJ
881JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
882 whether --show-vars was specified or not
883
884JJ/02 exipick: Added support for new ACL variable spool format introduced
885 in 4.61-PH/06
886
424a1c63
PH
887PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
888 syntactically invalid From: or Reply-to: line, and a filter used this to
889 generate an autoreply, and therefore failed to obtain an address for the
890 autoreply, Exim could try to deliver to a non-existent relative file
891 name, causing unrelated and misleading errors. What now happens is that
892 it logs this as a hard delivery error, but does not attempt to create a
893 bounce message.
894
7a100415
PH
895PH/11 The exinext utility has a -C option for testing purposes, but although
896 the given file was scanned by exinext itself; it wasn't being passed on
897 when Exim was called.
898
19b9dc85
PH
899PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
900 an end-of-file indication when reading a command response.
901
309bd837
PH
902PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
903 compiled. In many other places in Exim, IPv6 addresses are always
904 recognized, so I have changed this. It also means that IPv4 domain
905 literals of the form [IPV4:n.n.n.n] are now always recognized.
906
59e82a2a
PH
907PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
908 used if the router is not running as root, for example, when verifying at
909 ACL time, or when using -bh. The debugging output from this situation was
910 non-existent - all you got was a failure to exec. I have made two
911 changes:
912
913 (a) Failures to set uid/gid, the current directory, or a process leader
914 in a subprocess such as that created by queryprogram now generate
915 suitable debugging ouput when -d is set.
916
917 (b) The queryprogram router detects when it is not running as root,
918 outputs suitable debugging information if -d is set, and then runs
919 the subprocess without attempting to change uid/gid.
920
9edc04ce
PH
921PH/15 Minor change to Makefile for building test_host (undocumented testing
922 feature).
923
1349e1e5
PH
924PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
925 additional section of a DNS packet that returns MX or SRV records.
926 Instead, it always explicitly searches for A/AAAA records. This avoids
927 major problems that occur when a DNS server includes only records of one
928 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
929 fixed another bug: if SRV records were looked up and the corresponding
930 address records were *not* found in the additional section, the port
931 values from the SRV records were lost.
932
ea49d0e1
PH
933PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
934 using the correct key (the original address) when searching the retry
935 rules in order to find which one to use for generating the retry hint.
936
064a94c9
PH
937PH/18 If quota_warn_message contains a From: header, Exim now refrains from
938 adding the default one. Similarly, if it contains a Reply-To: header, the
939 errors_reply_to option, if set, is not used.
940
727071f8
PH
941PH/19 When calculating a retry time, Exim used to measure the "time since
942 failure" by looking at the "first failed" field in the retry record. Now
943 it does not use this if it is later than than the arrival time of the
944 message. Instead it uses the arrival time. This makes for better
945 behaviour in cases where some deliveries succeed, thus re-setting the
946 "first failed" field. An example is a quota failure for a huge message
947 when small messages continue to be delivered. Without this change, the
948 "time since failure" will always be short, possible causing more frequent
949 delivery attempts for the huge message than are intended.
dd16e114 950 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 951
f78eb7c6
PH
952PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
953 $1, $2, $3) because the numerical variables can be reset during some
954 expansion items (e.g. "match"), thereby losing the authentication data.
955
21c28500
PH
956PH/21 Make -bV show the size of off_t variables so that the test suite can
957 decide whether to run tests for quotas > 2G.
958
959PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
960 mailbox_size, and mailbox_filecount in the appendfile transport. If a
961 filecount value is greater than 2G or if a quota value is greater than 2G
962 on a system where the size of off_t is not greater than 4, a panic error
963 is given.
964
1688f43b
PH
965PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
966 never match. The debug and -bh output now contains an explicit error
967 message indicating a malformed IPv4 address or mask.
968
969PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
970 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
971 PH/23 above applies.
972
9675b384
PH
973PH/25 Do not write to syslog when running in the test harness. The only
974 occasion when this arises is a failure to open the main or panic logs
975 (for which there is an explicit test).
976
6a3f1455
PH
977PH/26 Added the /no_tell option to "control=freeze".
978
dac79d3e
PH
979PH/27 If a host name lookup failed very early in a connection, for example, if
980 the IP address matched host_lookup and the reverse lookup yielded a name
981 that did not have a forward lookup, an error message of the form "no IP
982 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
983 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 984
5977a0b3
PH
985PH/28 An enabling patch from MH: add new function child_open_exim2() which
986 allows the sender and the authenticated sender to be set when
987 submitting a message from within Exim. Since child_open_exim() is
988 documented for local_scan(), the new function should be too.
989
c91535f3
PH
990PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
991 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
992 results in an empty string is now treated as unset.
993
0d46a8c8
PH
994PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
995
278c6e6c
PH
996PH/31 Added sender_verify_fail logging option.
997
2cbb4081
PH
998PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
999 needed by RFC 822 but not by RFC 2822 was commented out. I have now
1000 tidied the source and removed it altogether.
1001
3eef829e
PH
1002PH/33 When a queue run was abandoned because the load average was too high, a
1003 log line was always written; now it is written only if the queue_run log
1004 selector is set. In addition, the log line for abandonment now contains
1005 information about the queue run such as the pid. This is always present
1006 in "start" and "stop" lines but was omitted from the "abandon" line.
1007
1ab95fa6
PH
1008PH/34 Omit spaces between a header name and the colon in the error message that
1009 is given when verify = headers_syntax fails (if there are lots of them,
1010 the message gets confusing).
1011
230205fc
PH
1012PH/35 Change the default for dns_check_names_pattern to allow slashes within
1013 names, as there are now some PTR records that contain slashes. This check
1014 is only to protect against broken name servers that fall over on strange
1015 characters, so the fact that it applies to all lookups doesn't matter.
1016
75e0e026
PH
1017PH/36 Now that the new test suite is complete, we can remove some of the
1018 special code in Exim that was needed for the old test suite. For example,
1019 sorting DNS records because real resolvers return them in an arbitrary
1020 order. The new test suite's fake resolver always returns records in the
1021 same order.
1022
1023PH/37 When running in the test harness, use -odi for submitted messages (e.g.
1024 bounces) except when queue_only is set, to avoid logging races between
1025 the different processes.
1026
145396a6
PH
1027PH/38 Panic-die if .include specifies a non-absolute path.
1028
3cd34f13
PH
1029PH/39 A tweak to the "H" retry rule from its user.
1030
11121d3d
JJ
1031JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
1032 a label. They prevented compilation on older perls.
1033
1034JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
1035 a warning to be raised on newish perls.
1036
1037JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
1038 on queue. Changes to match documented behaviour of showing count of
1039 messages matching specified criteria.
1040
8def5aaf
PH
1041PH/40 Changed the default ident timeout from 30s to 5s.
1042
929ba01c
PH
1043PH/41 Added support for the use of login_cap features, on those BSD systems
1044 that have them, for controlling the resources used by pipe deliveries.
1045
2632889e
PH
1046PH/42 The content-scanning code uses fopen() to create files in which to put
1047 message data. Previously it was not paying any attention to the mode of
1048 the files. Exim runs with umask(0) because the rest of the code creates
1049 files with open(), and sets the required mode explicitly. Thus, these
1050 files were ending up world-writeable. This was not a big issue, because,
1051 being within the spool directory, they were not world-accessible. I have
1052 created a function called modefopen, which takes an additional mode
1053 argument. It sets umask(777), creates the file, chmods it to the required
1054 mode, then resets the umask. All the relevant calls to fopen() in the
1055 content scanning code have been changed to use this function.
1056
944a9c55
PH
1057PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
1058 to 24 hours. This avoids potential overflow problems when processing G
1059 and H retry rules. I suspect nobody ever tinkers with this value.
1060
4a23603b
PH
1061PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
1062
4730f942
PH
1063PH/45 When the plaintext authenticator is running as a client, the server's
1064 challenges are checked to ensure they are valid base64 strings. By
1065 default, the authentication attempt is cancelled if an invalid string is
1066 received. Setting client_ignore_invalid_base64 true ignores these errors.
1067 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
1068 they are received. Thus, the responses can be made to depend on the
1069 challenges. If an invalid string is ignored, an empty string is placed in
1070 the variable.
1071
30dba1e6
PH
1072PH/46 Messages that are created by the autoreply transport now contains a
1073 References: header, in accordance with RFCs 2822 and 3834.
1074
382afc6b
PH
1075PH/47 Added authenticated_sender_force to the smtp transport.
1076
a86229cf
PH
1077PH/48 The ${prvs expansion was broken on systems where time_t was long long.
1078
50c99ba6
PH
1079PH/49 Installed latest patch from the Sieve maintainer.
1080
d35e429d
PH
1081PH/50 When an Exim quota was set without a file count quota, and mailbox_size
1082 was also set, the appendfile transport was unnecessarily scanning a
1083 directory of message files (e.g. for maildir delivery) to find the count
1084 of files (along with the size), even though it did not need this
1085 information. It now does the scan only if it needs to find either the
1086 size of the count of files.
1087
f90d018c
PH
1088PH/51 Added ${time_eval: to convert Exim time strings into seconds.
1089
75def545
PH
1090PH/52 Two bugs concerned with error handling when the smtp transport is
1091 used in LMTP mode:
1092
1093 (i) Exim was not creating retry information for temporary errors given
1094 for individual recipients after the DATA command when the smtp transport
1095 was used in LMTP mode. This meant that they could be retried too
1096 frequently, and not timed out correctly.
1097
1098 (ii) Exim was setting the flag that allows error details to be returned
1099 for LMTP errors on RCPT commands, but not for LMTP errors for individual
1100 recipients that were returned after the DATA command.
1101
1102PH/53 This is related to PH/52, but is more general: for any failing address,
1103 when detailed error information was permitted to be returned to the
1104 sender, but the error was temporary, then after the final timeout, only
1105 "retry timeout exceeded" was returned. Now it returns the full error as
1106 well as "retry timeout exceeded".
1107
c46782ef
PH
1108PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1109 do this, and (what is worse) MTAs that accept it.
1110
71fafd95
PH
1111PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1112 will now be deprecated.
1113
2c5db4fd
PH
1114PH/56 New os.c-cygwin from the Cygwin maintainer.
1115
9cf6b11a
JJ
1116JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1117 formats (previously only available in exim formats via -bpr, -bpru,
1118 and -bpra. Now also available in native and exiqgrep formats)
1119
1120JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1121 with very large, slow to parse queues
1122
1123JJ/08 exipick: added ! as generic prefix to negate any criteria format
1124
1125JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1126
898d150f
PH
1127PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1128 responses to authentication challenges, though it was showing the
1129 challenges; (ii) I've removed the CR characters from the debug output for
1130 SMTP output lines.
1131
46218253
PH
1132PH/58 Allow for the insertion of a newline as well as a space when a string
1133 is turned into more than one encoded-word during RFC 2047 encoding. The
1134 Sieve code now uses this.
1135
e97957bc
PH
1136PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1137 data_4xx, lost_connection, tls_required.
1138
81e509d7
PH
1139PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1140 message was being sent as an SMTP response.
1141
3d240ff7
PH
1142PH/61 Add -l and -k options to exicyclog.
1143
b37c4101
PH
1144PH/62 When verifying, if an address was redirected to one new address, so that
1145 verification continued, and the new address failed or deferred after
1146 having set something in $address_data, the value of $address_data was not
1147 passed back to the ACL. This was different to the case when no
1148 redirection occurred. The value is now passed back in both cases.
1149
79378e0f
PH
1150PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1151 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1152 use login_cap.h, so on its own it isn't the distinguishing feature. The
1153 new name refers directly to the setclassresources() function.
1154
e49c7bb4
PH
1155PH/65 Added configuration files for NetBSD3.
1156
d114ec46
PH
1157PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1158
f3d7df6c
PH
1159PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1160 is preferred over IPv4.
1161
715ab376
PH
1162PH/68 The bounce_return_message and bounce_return_body options were not being
1163 honoured for bounces generated during the reception of non-SMTP messages.
1164 In particular, this applied to messages rejected by the ACL. This bug has
1165 been fixed. However, if bounce_return_message is true and bounce_return_
1166 body is false, the headers that are returned for a non-SMTP message
1167 include only those that have been read before the error was detected.
1168 (In the case of an ACL rejection, they have all been read.)
1169
6b31b150
PH
1170PH/69 The HTML version of the specification is now built in a directory called
1171 spec_html instead of spec.html, because the latter looks like a path with
1172 a MIME-type, and this confuses some software.
1173
1174PH/70 Catch two compiler warnings in sieve.c.
1175
d515a917
PH
1176PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1177 function verify_get_ident() calls ip_connect() to connect a socket, but
1178 if the "connect()" function timed out, ip_connect() used to close the
1179 socket. However, verify_get_ident() also closes the socket later, and in
1180 between Exim writes to the log, which may get opened at this point. When
1181 the socket was closed in ip_connect(), the log could get the same file
1182 descriptor number as the socket. This naturally causes chaos. The fix is
1183 not to close the socket in ip_connect(); the socket should be closed by
1184 the function that creates it. There was only one place in the code where
1185 this was missing, in the iplookup router, which I don't think anybody now
1186 uses, but I've fixed it anyway.
1187
9b8fadde
PH
1188PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1189 well as to direct DNS lookups. Otherwise the handling of names in host
1190 lists is inconsistent and therefore confusing.
1191
214e2000 1192
5de37277
PH
1193Exim version 4.60
1194-----------------
1195
cc38ddbf
PH
1196PH/01 Two changes to the default runtime configuration:
1197
1198 (1) Move the checks for relay_from_hosts and authenticated clients from
1199 after to before the (commented out) DNS black list checks.
1200
1201 (2) Add control=submission to the relay_from_hosts and authenticated
1202 clients checks, on the grounds that messages accepted by these
1203 statements are most likely to be submissions.
5de37277 1204
72fdd6ae
PH
1205PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1206
1207 (1) Generate an error if the third argument for the ${prvs expansion is
1208 not a single digit.
1209
1210 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1211 string.
1212
1213 (3) Reset the variables that are obtained from the first argument of
1214 ${prvscheck and used in the second argument before leaving the code,
1215 because their memory is reclaimed, so using them afterwards may do
1216 silly things.
1217
1218 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1219 one (it's much easier than Tom thought :-).
1220
1221 (5) Because of (4), we can now allow for the use of $prvscheck_result
1222 inside the third argument.
cb9328de 1223
cb741023
PH
1224PH/03 For some reason, the default setting of PATH when running a command from
1225 a pipe transport was just "/usr/bin". I have changed it to
1226 "/bin:/usr/bin".
1227
f174f16e
PH
1228PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1229 anything to be listed in the output from -bV.
b2f5a032 1230
c25242d7
PH
1231PH/05 When a filter generated an autoreply, the entire To: header line was
1232 quoted in the delivery log line, like this:
1233
1234 => >A.N.Other <ano@some.domain> <original@ddress> ...
1235
1236 This has been changed so that it extracts the operative address. There
1237 may be more than one such address. If so, they are comma-separated, like
1238 this:
1239
1240 => >ano@some.domain,ona@other.domain <original@ddress> ...
1241
82c19f95
PH
1242PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1243 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1244 not being looked up in the rDNS to get a host name, Exim was showing the
1245 IP address twice in Received: lines, even though the IP addresses were
1246 identical. For example:
1247
1248 Received: from [1.2.3.4] (helo=[1.2.3.4])
1249
1250 However, if the real host name was known, it was omitting the HELO data
1251 if it matched the actual IP address. This has been tidied up so that it
1252 doesn't show the same IP address twice.
1253
d7ffbc12
PH
1254PH/07 When both +timestamp and +memory debugging was on, the value given by
1255 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1256 called by the debug printing, thereby overwriting the timestamp buffer.
1257 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1258
9f526266
PH
1259PH/08 When the original message was included in an autoreply transport, it
1260 always said "this is a copy of the message, including all the headers",
1261 even if body_only or headers_only was set. It now gives an appropriate
1262 message.
1263
87fcc8b9
PH
1264PH/09 Applied a patch from the Sieve maintainer which:
1265
1266 o fixes some comments
1267 o adds the (disabled) notify extension core
1268 o adds some debug output for the result of if/elsif tests
1269 o points to the current vacation draft in the documentation
1270 and documents the missing references header update
1271
1272 and most important:
1273
1274 o fixes a bug in processing the envelope test (when testing
1275 multiple envelope elements, the last element determinted the
1276 result)
1277
456682f5
PH
1278PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1279 Electronic Mail") by including:
1280
1281 Auto-submitted: auto-generated
1282
1283 in the messages that it generates (bounce messages and others, such as
1284 warnings). In the case of bounce messages for non-SMTP mesages, there was
1285 also a typo: it was using "Auto_submitted" (underscore instead of
1286 hyphen). Since every message generated by Exim is necessarily in response
1287 to another message, thes have all been changed to:
1288
1289 Auto-Submitted: auto-replied
1290
1291 in accordance with these statements in the RFC:
1292
1293 The auto-replied keyword:
1294
1295 - SHOULD be used on messages sent in direct response to another
1296 message by an automatic process,
1297
1298 - MUST NOT be used on manually-generated messages,
1299
1300 - MAY be used on Delivery Status Notifications (DSNs) and Message
1301 Disposition Notifications (MDNs),
1302
1303 - MUST NOT be used on messages generated by automatic or periodic
1304 processes, except for messages which are automatic responses to
1305 other messages.
1306
3e46c1aa
PH
1307PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1308 to the default Received: header definition.
456682f5 1309
49826d12
PH
1310PH/12 Added log selector acl_warn_skipped (default on).
1311
eba0c039
PH
1312PH/13 After a successful wildlsearch lookup, discard the values of numeric
1313 variables because (a) they are in the wrong storage pool and (b) even if
1314 they were copied, it wouldn't work properly because of the caching.
1315
a0d6ba8a
PH
1316PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1317 checking when decoding. Apparently there are clients that generate
1318 overlong encoded strings. Why am I not surprised?
1319
f0917727
PH
1320PH/15 If the first argument of "${if match_address" was not empty, but did not
1321 contain an "@" character, Exim crashed. Now it writes a panic log message
1322 and treats the condition as false.
1323
096fee00
PH
1324PH/16 In autoreply, treat an empty string for "once" the same as unset.
1325
024bd3c2
PH
1326PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1327 extension "envelope-auth". The code is finished and in agreement with
1328 other implementations, but there is no documentation so far and in fact,
1329 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1330 not changing the active code.
1331
1332 Print executed "if" and "elsif" statements when debugging is used. This
1333 helps a great deal to understand what a filter does.
1334
1335 Document more things not specified clearly in RFC3028. I had all this
1336 sorted out, when out of a sudden new issues came to my mind. Oops."
1337
df199fec
PH
1338PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1339 (Bugzilla #53).
1340
d27f1df3
PH
1341PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1342 canonical form (as documented). However, after a host name lookup from
1343 the IP address, check_host() was doing a simple string comparison with
1344 addresses acquired from the DNS when checking that the found name did
1345 have the original IP as one of its addresses. Since any found IPv6
1346 addresses are likely to be in abbreviated form, the comparison could
1347 fail. Luckily, there already exists a function for doing the comparison
1348 by converting both addresses to binary, so now that is used instead of
1349 the text comparison.
1350
96776534
PH
1351PH/20 There was another similar case to PH/19, when a complete host name was
1352 given in a host list; looking up its IP address could give an abbreviated
1353 form, whereas the current host's name might or might not be abbreviated.
1354 The same fix has been applied.
1355
5de37277 1356
9a799bc0
PH
1357Exim version 4.54
1358-----------------
1359
1360PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1361 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1362 It now does.
1363
99a4b039
PH
1364PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1365 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1366
1367PH/03 Typo: missing ".o" in src/pcre/Makefile.
1368
4b233853
PH
1369PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1370 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1371 Also, for "Auto-Submitted", treat anything other than "no" as
1372 non-personal, in accordance with RFC 3834. (Previously it treated
1373 anything starting "auto-" as non-personal.)
1374
8857ccfd
PH
1375TF/01 The control=submission/name=... option had a problem with syntax
1376 errors if the name included a slash character. The /name= option
1377 now slurps the rest of the string, so it can include any characters
1378 but it must come last in the list of options (after /sender_retain
1379 or /domain=).
1380
433a2980
PH
1381PH/05 Some modifications to the interface to the fake nameserver for the new
1382 testing suite.
1383
3e46c1aa 1384
9a799bc0 1385
e3a311ba
TK
1386Exim version 4.53
1387-----------------
1388
1389TK/01 Added the "success_on_redirect" address verification option. See
1390 NewStuff for rationale and an example.
1391
13b685f9
PH
1392PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1393
395ff96d
PH
1394PH/02 Patch to exigrep to allow it to work on syslog lines.
1395
5b68f6e4
PH
1396PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1397 fread() to skip over the body file's header line, because in Cygwin the
1398 header line is locked and is inaccessible.
1399
1ab52c69
PH
1400PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1401 co-exist for some time) to make it clear that it is the Exim ID that is
1402 referenced, not the Message-ID: header line.
1403
b07e6aa3
PH
1404PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1405 string_format() function, because snprintf() does not exist on all
1406 operating systems.
1407
254e032f
PH
1408PH/06 The use of forbid_filter_existstest now also locks out the use of the
1409 ${stat: expansion item.
1410
3af76a81
PH
1411PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1412 protocol synchronization error", to keep the pedants happy.
1413
2548ba04
PH
1414PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1415 well as for IRIX systems, when gcc is being used. See the host.c source
1416 file for comments.
1417
b6c6011d
PH
1418PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1419
cf39cf57
PH
1420PH/10 Named domain lists were not working if used in a queue_smtp_domains
1421 setting.
1422
f1513293
PH
1423PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1424 transport and to the smtp transport in LMTP mode.
1425
727549a4
PH
1426TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1427
af46795e
PH
1428PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1429 run a filter in a subprocess. This could lead to confusion in subsequent
1430 lookups in the parent process. There should also be a search_tidyup() at
1431 the end of the subprocess.
1432
d7b47fd0
PH
1433PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1434 only if the host matched helo_try_verify_hosts, which caused the
1435 verification to occur when the EHLO/HELO command was issued. The ACL just
1436 tested the remembered result. Now, if a previous verification attempt has
1437 not happened, "verify = helo" does it there and then.
1438
ee744174
JJ
1439JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1440
b582ab87
PH
1441TK/03 Fix log output including CR from clamd.
1442
41a13e0a
PH
1443PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1444 exist provoked a memory error which could cause a segfault.
1445
f625cc5a
PH
1446PH/15 Installed PCRE 6.2
1447
1448PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1449
21f7af35
PH
1450PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1451 of the problem. Specifically, suggested +O2 rather than +O1 for the
1452 HP-UX compiler.
1453
31480e42
PH
1454PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1455
2d280592
PH
1456PH/20 If a delivery was routed to a non-standard port by means of an SRV
1457 record, the port was not correctly logged when the outgoing_port log
1458 selector was set (it logged the transort's default port).
1459
7cd1141b
PH
1460PH/21 Added support for host-specific ports to manualroute, queryprogram,
1461 fallback_hosts, and "hosts" in the smtp transport.
1462
1463PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1464 host errors such as "Connection refused".
1465
750af86e
PH
1466PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1467 authentication with radiusclient 0.4.9:
1468
1469 - Error returned from rc_read_config was caught wrongly
1470 - Username/password not passed on to radius server due to wrong length.
1471
1472 The presumption is that some radiusclient API changes for 4.51/PH/17
1473 were not taken care of correctly. The code is still untested by me (my
1474 Linux distribution still has 0.3.2 of radiusclient), but it was
1475 contributed by a Radius user.
1476
1477PH/24 When doing a callout, the value of $domain wasn't set correctly when
1478 expanding the "port" option of the smtp transport.
1479
4304270b
TK
1480TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1481 while reading a MIME header. Thanks to Tom Hughes for a patch.
1482
750af86e
PH
1483PH/24 Include config.h inside local_scan.h so that configuration settings are
1484 available.
1485
64ffc24f
PH
1486PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1487 that in an ACL for RCPT (for example), you can examine exactly what was
1488 received.
1489
5dd9625b
PH
1490PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1491 commands, but it was not correctly comparing the address with the actual
1492 client host address. Thus, it would show the EHLO address in Received:
1493 header lines when this was not necessary.
1494
5591031b
PH
1495PH/27 Added the % operator to ${eval:}.
1496
ba18e66a
PH
1497PH/28 Exim tries to create and chdir to its spool directory when it starts;
1498 it should be ignoring failures (because with -C, for example, it has lost
1499 privilege). It wasn't ignoring creation failures other than "already
1500 exists".
1501
9cec981f
PH
1502PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1503 -bV or -d is used.
1504
aa2b5c79
PH
1505PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1506 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1507 too many continuations, the temporary file was not being removed, and the
1508 return code was incorrect.
aa2b5c79 1509
48a53b7f
PH
1510PH/31 Missing "BOOL" in function definition in filtertest.c.
1511
1c59d63b
PH
1512PH/32 Applied Sieve patches from the maintainer.
1513
671012da
TK
1514TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1515
1509d3a8
PH
1516PH/33 Added "verify = not_blind".
1517
1518PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1519 Local/Makefile (with some defaults set). These are used in built scripts
1520 such as exicyclog, but they have never been used in the exim_install
1521 script (though there are many overriding facilities there). I have
1522 arranged that the exim_install script now takes note of these two
1523 settings.
1524
1525PH/35 Installed configuration files for Dragonfly.
1526
2fe1a124
PH
1527PH/36 When a locally submitted message by a trusted user did not contain a
1528 From: header, and the sender address was obtained from -f or from an SMTP
1529 MAIL command, and the trusted user did not use -F to supply a sender
1530 name, $originator_name was incorrectly used when constructing a From:
1531 header. Furthermore, $originator_name was used for submission mode
1532 messages from external hosts without From: headers in a similar way,
1533 which is clearly wrong.
1534
8800895a
PH
1535PH/37 Added control=suppress_local_fixups.
1536
ccfdb010
PH
1537PH/38 When log_selector = +received_sender was set, and the addition of the
1538 sender made the log line's construction buffer exactly full, or one byte
1539 less than full, an overflow happened when the terminating "\n" was
1540 subsequently added.
1541
1130bfb0
PH
1542PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1543 when the result of a list match is failure because a DNS lookup failed.
1544
ebcb507f
PH
1545PH/40 RM_COMMAND is now used in the building process.
1546
c35e155c
PH
1547PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1548 the "build-* directories that it finds.
1549
95d1f782
PH
1550PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1551 address in a domain literal was a prefix of an interface address.
1552
fd6de02e
PH
1553PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1554 when verifying a sender address, unless rewrite_headers is false.
1555
58de37c5
PH
1556PH/44 Wrote a long comment about why errors_to addresses are verified as
1557 recipients, not senders.
1558
261cf466
TF
1559TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1560 the ratelimit ACL was added.
1561
3ee512ff
PH
1562PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1563
e08c430f
PH
1564PH/46 Added extra information about PostgreSQL errors to the error string.
1565
bef5a11f
PH
1566PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1567 avoiding the need to install special zones in a real server. This is
1568 backwards compatible; if it can't find the fake resolver, it drops back.
1569 Thus, both old and new test suites can be run.
1570
7546de58
TF
1571TF/02 Added util/ratelimit.pl
1572
e5d5a95f
TF
1573TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1574 clock is set back in time.
1575
2e88a017
TF
1576TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1577 Candler <B.Candler@pobox.com>.
1578
a5f65aa4
TF
1579TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1580 OK for addresses that are the result of redirections.
1581
e7726cbf
PH
1582PH/48 A number of further additions for the benefit of the new test suite,
1583 including a fake gethostbyname() that interfaces to the fake DNS resolver
1584 (see PH/47 above).
1585
a7fdad5b
TF
1586TF/06 The fix for widen_domains has also been applied to qualify_single and
1587 search_parents which are the other dnslookup options that can cause
1588 header rewrites.
1589
6af56900
PH
1590PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1591 type ("H").
1592
0925ede6
PH
1593PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1594
66afa403
TF
1595TF/07 Exim produced the error message "an SRV record indicated no SMTP
1596 service" if it encountered an MX record with an empty target hostname.
1597 The message is now "an MX or SRV record indicated no SMTP service".
1598
0154e85a
TF
1599TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1600 if the DNS of the sending site is misconfigured. This is quite a
1601 common situation. This change restores the behaviour of treating a
1602 helo verification defer as a failure.
1603
16f12c76
PH
1604PH/51 If self=fail was set on a router, the bounce message did not include the
1605 actual error message.
1606
bbe902f0 1607
e5a9dba6
PH
1608Exim version 4.52
1609-----------------
1610
1611TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1612
22c3b60b
PH
1613PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1614 command itself ended in error, the underlying message about the transport
1615 filter timeout was being overwritten with the pipe command error. Now the
1616 underlying error message should be appended to the second error message.
1617
06a9b4b5
PH
1618TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1619
c1ac6996
PH
1620PH/02 Reduce the amount of output that "make" produces by default. Full output
1621 can still be requested.
1622
9c7a242c
PH
1623PH/03 The warning log line about a condition test deferring for a "warn" verb
1624 was being output only once per connection, rather than after each
1625 occurrence (because it was using the same function as for successful
1626 "warn" verbs). This seems wrong, so I have changed it.
1627
87ba3f5f
PH
1628TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1629 it should not have, which might have caused a crash in the right
1630 circumstances, but probably never did.
1631
1632PH/04 Installed a modified version of Tony Finch's patch to make submission
1633 mode fix the return path as well as the Sender: header line, and to
1634 add a /name= option so that you can make the user's friendly name appear
1635 in the header line.
1636
29aba418
TF
1637TF/03 Added the control = fakedefer ACL modifier.
1638
fe0dab11
TF
1639TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1640 Mark Lowes for thorough testing.
870f6ba8 1641
11d337a4
TK
1642TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1643
1644TK/03 Merged latest SRS patch from Miles Wilton.
1645
415c8f3b
PH
1646PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1647 with the definition in sysexits.h (which is #included earlier).
1648 Fortunately, Exim does not actually use EX_OK. The code used to try to
1649 preserve the sysexits.h value, by assumimg that macro definitions were
1650 scanned for macro replacements. I have been disabused of this notion,
1651 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1652
958541e9
PH
1653PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1654 in the smtp transport. When a block could not be written in a single
1655 write() function, the timeout was being re-applied to each part-write.
1656 This seems wrong - if the receiver was accepting one byte at a time it
1657 would take for ever. The timeout is now adjusted when this happens. It
1658 doesn't have to be particularly precise.
1659
c206415f
TK
1660TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1661 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1662
2a4be8f9
PH
1663PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1664 without a domain if the check to <postmaster@domain> fails.
1665
1cba11c5
SC
1666SC/01 Eximstats: added -xls and the ability to specify output files
1667 (patch written by Frank Heydlauf).
1668
1669SC/02 Eximstats: use FileHandles for outputing results.
1670
1671SC/03 Eximstats: allow any combination of xls, txt, and html output.
1672
1673SC/04 Eximstats: fixed display of large numbers with -nvr option
1674
1675SC/05 Eximstats: fixed merging of reports with empty tables.
1676
1677SC/06 Eximstats: added the -include_original_destination flag
1678
1679SC/07 Eximstats: removed tabs and trailing whitespace.
1680
1005d00e
TK
1681TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1682
1683TK/06 MBOX spool code: Add real "From " MBOX separator line
1684 so the .eml file is really in mbox format (even though
1685 most programs do not really care). Patch from Alex Miller.
1686
1687TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1688 The latter is generated from $received_to and is only set if the
1689 message has one envelope recipient. SA can use these headers,
1690 obviously out-of-the-box. Patch from Alex Miller.
1691
9b4768fa
PH
1692PH/08 The ${def test on a variable was returning false if the variable's
1693 value was "0", contrary to what the specification has always said!
1694 The result should be true unless the variable is empty.
1695
1696PH/09 The syntax error of a character other than { following "${if
1697 def:variable_name" (after optional whitespace) was not being diagnosed.
1698 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1699 accidental colon was present, for example, could give incorrect results.
1700
0d7eb84a
PH
1701PH/10 Tidied the code in a number of places where the st_size field of a stat()
1702 result is used (not including appendfile, where other changes are about
1703 to be made).
1704
1705PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1706 This involved changing a lot of size variables from int to off_t. It
1707 should work with maildirs and everything.
1708
40727bee
TK
1709TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1710 spamd dying while we are connected to it.
1711
554d2369
TF
1712TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1713 <jgh@wizmail.org>
1714
1f922db1
PH
1715PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1716 function for BDB 4.3.
1717
ef213c3b
PH
1718PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1719
8ac170f3
PH
1720PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1721 the sources for PCRE have been re-arranged and more files are now
1722 involved.
1723
b1c749bb
PH
1724PH/15 The code I had for printing potentially long long variables in PH/11
1725 above was not the best (it lost precision). The length of off_t variables
1726 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1727 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1728 to be "long long int" or "long int". This is needed for the internal
1729 formatting function string_vformat().
b1c749bb 1730
4aac9b49
PH
1731PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1732 the configuration file to be ":syslog", then the script "guesses" where
1733 the logs files are, rather than using the compiled in default. In our
1734 case the guess is not the same as the compiled default, so the script
1735 suddenly stopped working when I started to use syslog. The patch checks
1736 to see if log_file_path is "". If so, it attempts to read it from exim
1737 with no configuration file to get the compiled in version, before it
1738 falls back to the previous guessing code."
1739
294520c8
TK
1740TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1741 implementing BATV in an Exim configuration. See NewStuff for the gory
1742 details.
1743
5bd022fe
PH
1744PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1745 Makefile that are specific to HP-UX.
1746
90e9ce59
PH
1747PH/18 If the "use_postmaster" option was set for a recipient callout together
1748 with the "random" option, the postmaster address was used as the MAIL
1749 FROM address for the random test, but not for the subsequent recipient
1750 test. It is now used for both.
1751
5ea81592
PH
1752PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1753 patch removes a few documentation additions to RFC 3028, because the
1754 latest draft now contains them. It adds the new en;ascii-case comparator
1755 and a new error check for 8bit text in MIME parts. Comparator and
1756 require names are now matched exactly. I enabled the subaddress
1757 extension, but it is not well tested yet (read: it works for me)."
1758
c6c2dc1d
PH
1759PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1760 rework some of the code of TK/09 above to avoid the hardwired use of
1761 "%lld" and "long long". Replaced the call to snprintf() with a call to
1762 string_vformat().
1763
fffffe4c
PH
1764PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1765 records point to non-existent hosts", "retry timeout exceeded", and
1766 "retry time not reached for any host after a long failure period".
ca02eafb 1767
9a26b6b2
PH
1768PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1769 experimental DomainKeys support:
1770
1771 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1772 (2) On an error such as an illegally used "control", the wrong name for
1773 the control was given.
1774
1775 These problems did NOT occur unless DomainKeys support was compiled.
1776
4aee0225
PH
1777PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1778
32d668a5
PH
1779PH/24 Added ${if match_ip condition.
1780
8187c3f3
PH
1781PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1782 databases so that it will be absolutely obvious if a crash occurs in the
1783 DB library. This is a regular occurrence (often caused by mis-matched
1784 db.h files).
1785
ff790e47 1786PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1787 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1788 picked up on a user's system that detects such things. There doesn't seem
1789 to be a gcc warning option for this - only an attribute that has to be
1790 put on the function's prototype. It seems that in Fedora Core 4 they have
1791 set this on a number of new functions. No doubt there will be more in due
1792 course.
ff790e47 1793
5417f6d1
PH
1794PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1795 specify a transport. However, if an address that was verified by such a
1796 router was the subject of a callout, Exim crashed because it tried to
1797 read the rcpt_include_affixes from the non-existent transport. Now it
1798 just assumes that the setting of that option is false. This bug was
1799 introduced by 4.51/PH/31.
1800
59cf8544
PH
1801PH/28 Changed -d+all to exclude +memory, because that information is very
1802 rarely of interest, but it makes the output a lot bigger. People tend to
1803 do -d+all out of habit.
1804
e7ad8a65
PH
1805PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1806 code in os-type was giving problems when libc.so lives in lib64, like on
1807 x86_64 Fedora Core.
1808
ade42478
PH
1809PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1810 aren't the modern standard, and it seems that some systems' include files
1811 don't always have them. Exim was already checking for some of the newer
1812 ones like T_AAAA, and defining it itself. I've added checks for all the
1813 record types that Exim uses.
1814
182ad5cf
PH
1815PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1816 not automatically generating a new one, as it is supposed to. This
1817 prevented TLS from working. If the file did exist, but contained invalid
1818 data, a new version was generated, as expected. It was only the case of a
1819 non-existent file that was broken.
1820
b0d9fc80
TK
1821TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1822 with a change in libdomainkeys > 0.64.
1823
1824TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1825 from DNS. If the selector record carries the flag, it now has
1826 precedence over the domain-wide flag.
1827
1828TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1829
47c7a64a
PH
1830PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1831 the use of a port name that isn't defined in /etc/services) occurred, the
1832 message was deferred as in a normal delivery, and thus remained on the
1833 spool, instead of being failed because of the mua_wrapper setting. This
1834 is now fixed, and I tidied up some of the mua_wrapper messages at the
1835 same time.
1836
a388bce4
SC
1837SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1838 the messages in a hash of arrays rather than using individual hashes.
1839 This is a bit cleaner and results in dramatic memory savings, albeit
1840 at a slight CPU cost.
1841
1842SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1843 as requested by Marc Sherman.
1844
1845SC/10 Eximstats: added histograms for user specified patterns as requested
1846 by Marc Sherman.
1847
0793e4ed
SC
1848SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1849
c58b88df
PH
1850PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1851 fopen() in the content-scanning modules that did not already have it.
1852
e7ad8a65 1853
7982096b
PH
1854Exim version 4.51
1855-----------------
1856
1a46a8c5
PH
1857TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1858 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1859
2f079f46 1860TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1861
1862TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1863
1864PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1865 to test Sieve filters that use "vacation".
1866
1867PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1868 that changes the way the GnuTLS parameters are stored in the cache file.
1869 The new format can be generated externally. For backward compatibility,
1870 if the data in the cache doesn't make sense, Exim assumes it has read an
1871 old-format file, and it generates new data and writes a new file. This
1872 means that you can't go back to an older release without removing the
1873 file.
1874
1875PH/03 A redirect router that has both "unseen" and "one_time" set does not
1876 work if there are any delivery delays because "one_time" forces the
1877 parent to be marked "delivered", so its unseen clone is never tried
1878 again. For this reason, Exim now forbids the simultaneous setting of
1879 these two options.
1880
1881PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1882 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1883 entry if you want to know the details. The fix, however, neglected to
1884 consider the case when local delivery batching is involved. The test for
1885 "previously delivered" was not happening when checking to see if an
1886 address could be batched with a previous (undelivered) one; under
1887 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1888 address.
1a46a8c5
PH
1889
1890PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1891 in its include files, and this causes problems building Exim.
1892
1893PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1894 header_syntax) but Exim was just ignoring anything given after a slash.
1895 In particular, this caused confusion with an attempt to use "verify =
1896 reverse_host_lookup/defer_ok". An error is now given when options are
1897 supplied for verify items that do not have them. (Maybe reverse_host_
1898 lookup should have a defer_ok option, but that's a different point.)
1899
1900PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1901 defined by RFC 821) to 2048, because there were problems with some AUTH
1902 commands, and RFC 1869 says the size should be increased for extended
1903 SMTP commands that take arguments.
1904
1905PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1906 Finch).
1907
1908PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1909 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1910
49c2d5ea
PH
1911PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1912 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1913 whatever). Otherwise the password may appear in the log. Following change
1914 PH/42 below, there is no longer a chance of it appearing in a bounce
1915 message.
49c2d5ea 1916
bf759a8b
PH
1917PH/11 Installed exipick version 20050225.0 from John Jetmore.
1918
83364d30
PH
1919PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1920 of its addresses was ever tried. (Bugzilla bug #2.)
1921
7999bbd7
PH
1922PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1923 the result incorrectly in the debug output. (It correctly added a newline
1924 to what was transported.)
1925
7dbf77c9
PH
1926TF/01 Added $received_time.
1927
74e0617f
PH
1928PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1929 commented out examples of how to interface to a virus scanner and to
1930 SpamAssassin. Also added commented examples of av_scanner and
1931 spamd_address settings.
1932
2f079f46
PH
1933PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1934 and controls are allowed in which ACLs. There were a couple of minor
1935 errors. Some of the entries in the conditions table (which is a table of
1936 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1937 negation of where the condition IS allowed.
1938
8c841523
PH
1939PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1940
7766a4f0
PH
1941PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1942 header file does not have a version number, so I've had to invent a new
1943 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1944 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1945 radiusclient), but it was contributed by a Radius user.
1946
8b417f2c
PH
1947PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1948 files or directories, for OpenSSL.
1949
901f42cb
PH
1950PH/19 When an Exim process that is running as root has to create an Exim log
1951 file, it does so in a subprocess that runs as exim:exim so as to get the
1952 ownership right at creation (otherwise, other Exim processes might see
1953 the file with the wrong ownership). There was no test for failure of this
1954 fork() call, which would lead to the process getting stuck as it waited
1955 for a non-existent subprocess. Forks do occasionally fail when resources
1956 run out. I reviewed all the other calls to fork(); they all seem to check
1957 for failure.
1958
f9b9210e
PH
1959PH/20 When checking for unexpected SMTP input at connect time (before writing
1960 the banner), Exim was not dealing correctly with a non-positive return
1961 from the read() function. If the client had disconnected by this time,
1962 the result was a log entry for a synchronization error with an empty
1963 string after "input=" when read() returned zero. If read() returned -1
1964 (an event I could not check), uninitialized data bytes were printed.
1965 There were reports of junk text (parts of files, etc) appearing after
1966 "input=".
1967
54cdb463
PH
1968PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1969
cf00dad6
PH
1970PH/22 Added support for macro redefinition, and (re)definition in between
1971 driver and ACL definitions.
1972
acb1b346
PH
1973PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1974 forgetting to use the resulting value; it was using the unexpanded value.
1975
c5ddb310
PH
1976PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1977 hadn't been configured. The fix is from Juergen Kreileder, who
1978 understands it better than I do:
1979
1980 "Here's what I see happening with three configured cyrus_sasl
1981 authenticators configured (plain, login, cram-md5):
1982
1983 On startup auth_cyrus_sasl_init() gets called for each of these.
1984 This means three calls to sasl_listmech() without a specified mech_list.
1985 => SASL tests which mechs of all available mechs actually work
1986 => three warnings about OTP not working
1987 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1988
1989 With the patch, sasl_listmech() also gets called three times. But now
1990 SASL's mech_list option is set to the server_mech specified in the the
1991 authenticator. Or in other words, the answer from sasl_listmech()
1992 gets limited to just the mech you're testing for (which is different
1993 for each call.)
1994 => the return list contains just 'plain' or 'login', 'cram-md5' or
1995 nothing depending on the value of ob->server_mech.
1996
1997 I've just tested the patch: Authentication still works fine,
1998 unavailable mechs specified in the exim configuration are still
1999 caught, and the auth.log warnings about OTP are gone."
2000
31619da6
PH
2001PH/25 When debugging is enabled, the contents of the command line are added
2002 to the debugging output, even when log_selector=+arguments is not
2003 specified.
2004
bebaf0fc
PH
2005PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
2006 answer is "GNU", and only if the return is "GNU/something" is the answer
2007 "Linux".
2008
475fe28a
PH
2009PH/27 $acl_verify_message is now set immediately after the failure of a
2010 verification in an ACL, and so is available in subsequent modifiers. In
2011 particular, the message can be preserved by coding like this:
2012
2013 warn !verify = sender
2014 set acl_m0 = $acl_verify_message
2015
2016 Previously, $acl_verify_message was set only while expanding "message"
2017 and "log_message" when a very denied access.
2018
7e8bec7a
PH
2019PH/28 Modified OS/os.c-Linux with
2020
2021 -#ifndef OS_LOAD_AVERAGE
2022 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
2023
2024 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
2025 nomenclature these days.)
2026
e4a89c47
PH
2027PH/29 Installed patch from the Sieve maintainer that adds the options
2028 sieve_useraddress and sieve_subaddress to the redirect router.
2029
5ca2a9a1
PH
2030PH/30 In these circumstances:
2031 . Two addresses routed to the same list of hosts;
2032 . First host does not offer TLS;
2033 . First host accepts first address;
2034 . First host gives temporary error to second address;
2035 . Second host offers TLS and a TLS session is established;
2036 . Second host accepts second address.
2037 Exim incorrectly logged both deliveries with the TLS parameters (cipher
2038 and peerdn, if requested) that were in fact used only for the second
2039 address.
7e8bec7a 2040
c688b954
PH
2041PH/31 When doing a callout as part of verifying an address, Exim was not paying
2042 attention to any local part prefix or suffix that was matched by the
2043 router that accepted the address. It now behaves in the same way as it
2044 does for delivery: the affixes are removed from the local part unless
2045 rcpt_include_affixes is set on the transport.
2046
fed77020
PH
2047PH/32 Add the sender address, as F=<...>, to the log line when logging a
2048 timeout during the DATA phase of an incoming message.
2049
7fe1560f
PH
2050PH/33 Sieve envelope tests were broken for match types other than :is. I have
2051 applied a patch sanctioned by the Sieve maintainer.
c688b954 2052
ebb6e6d5
PH
2053PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
2054 the uid or gid is negative. A case of a negative gid caused this to be
2055 noticed. The fix allows for either to be negative.
2056
9c4e8f60
PH
2057PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
2058 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
2059 overlooked.
2060
2061PH/36 The change PH/12 above was broken. Fixed it.
2062
d7174846
PH
2063PH/37 Exim used to check for duplicate addresses in the middle of routing, on
2064 the grounds that routing the same address twice would always produce the
2065 same answer. This might have been true once, but it is certainly no
2066 longer true now. Routing a child address may depend on the previous
2067 routing that produced that child. Some complicated redirection strategies
2068 went wrong when messages had multiple recipients, and made Exim's
2069 behaviour dependent on the order in which the addresses were given.
2070
2071 I have moved the duplicate checking until after the routing is complete.
2072 Exim scans the addresses that are assigned to local and remote
2073 transports, and removes any duplicates. This means that more work will be
2074 done, as duplicates will always all be routed, but duplicates are
2075 presumably rare, so I don't expect this is of any significance.
2076
2077 For deliveries to pipes, files, and autoreplies, the duplicate checking
2078 still happens during the routing process, since they are not going to be
2079 routed further.
2080
cfe75fc3
PH
2081PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
2082 It corrects a timeout issue with spamd. This is Ian's comment: "The
2083 background is that sometimes spamd either never reads data from a
2084 connection it has accepted, or it never writes response data. The exiscan
2085 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
2086 blindly assumes that writes won't block so it may never time out."
2087
be22d70e
PH
2088PH/39 Allow G after quota size as well as K and M.
2089
0612b098
PH
2090PH/40 The value set for $authenticated_id in an authenticator may not contain
2091 binary zeroes or newlines because the value is written to log lines and
2092 to spool files. There was no check on this. Now the value is run through
2093 the string_printing() function so that such characters are converted to
2094 printable escape sequences.
2095
2e0c1448
PH
2096PH/41 $message_linecount is a new variable that contains the total number of
2097 lines in the message. Compare $body_linecount, which is the count for the
2098 body only.
2099
447d236c
PH
2100PH/42 Exim no longer gives details of delivery errors for specific addresses in
2101 bounce and delay warning messages, except in certain special cases, which
2102 are as follows:
2103
2104 (a) An SMTP error message from a remote host;
2105 (b) A message specified in a :fail: redirection;
2106 (c) A message specified in a "fail" command in a system filter;
2107 (d) A message specified in a FAIL return from the queryprogram router;
2108 (e) A message specified by the cannot_route_message router option.
2109
2110 In these cases only, Exim does include the error details in bounce and
2111 warning messages. There are also a few cases where bland messages such
2112 as "unrouteable address" or "local delivery error" are given.
2113
d20976dc
PH
2114PH/43 $value is now also set for the "else" part of a ${run expansion.
2115
f656d135
PH
2116PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2117 being worked on, but at least Exim now implements the latest version to
2118 play with."
2119
2e2a30b4
PH
2120PH/45 In a pipe transport, although a timeout while waiting for the pipe
2121 process to complete was treated as a delivery failure, a timeout while
2122 writing the message to the pipe was logged, but erroneously treated as a
2123 successful delivery. Such timeouts include transport filter timeouts. For
2124 consistency with the overall process timeout, these timeouts are now
2125 treated as errors, giving rise to delivery failures by default. However,
2126 there is now a new Boolean option for the pipe transport called
2127 timeout_defer, which, if set TRUE, converts the failures into defers for
2128 both kinds of timeout. A transport filter timeout is now identified in
2129 the log output.
2130
9176e9f0
PH
2131PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2132 systems where "make" and "gmake" are different, calling "gmake" at top
2133 level broke things. I've arranged for the value of $(MAKE) to be passed
2134 from the Makefile to this script so that it can call the same version of
2135 "make".
2136
7982096b 2137
bbe902f0
PH
2138A note about Exim versions 4.44 and 4.50
2139----------------------------------------
2140
2141Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2142changes of various kinds. As a consequence, a big documentation update was
2143needed. This delayed the release for rather longer than seemed good, especially
2144in the light of a couple of (minor) security issues. Therefore, the changes
2145that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2146release. So 4.44 and 4.50 are in effect two different branches that both start
2147from 4.43.
2148
2149I have left the 4.50 change log unchanged; it contains all the changes since
21504.43. The change log for 4.44 is below; many of its items are identical to
2151those for 4.50. This seems to be the most sensible way to preserve the
2152historical information.
2153
2154
f7b63901 2155Exim version 4.50
495ae4b0
PH
2156-----------------
2157
5fe762f6
PH
2158 1. Minor wording change to the doc/README.SIEVE file.
2159
139059f6 2160 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2161 computation of the current number of files was incorrect.
495ae4b0 2162
7086e875
PH
2163 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2164 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2165 place.
2166
35af9f61
PH
2167 4. Give more explanation in the error message when the command for a transport
2168 filter fails to execute.
2169
b668c215
PH
2170 5. There are several places where Exim runs a non-Exim command in a
2171 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2172 was being done only for the command run by the queryprogram router. It is
2173 now done for all such subprocesses. The other cases are: ${run, transport
2174 filters, and the commands run by the lmtp and pipe transports.
2175
a494b1e1
PH
2176 6. Added CONFIGURE_GROUP build-time option.
2177
2178 7. Some older OS have a limit of 256 on the maximum number of file
2179 descriptors. Exim was using setrlimit() to set 1000 as a large value
2180 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2181 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2182
c5fcb476
PH
2183 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2184 was an oversight, and furthermore, ever since the addition of extra
2185 controls (e.g. 4.43/32), the checks on when to allow different forms of
2186 "control" were broken. There should now be diagnostics for all cases when a
2187 control that does not make sense is encountered.
2188
69358f02
PH
2189 9. Added the /retain_sender option to "control=submission".
2190
5be20824
PH
219110. $recipients is now available in the predata ACL (oversight).
2192
eb2c0248
PH
219311. Tidy the search cache before the fork to do a delivery from a message
2194 received from the command line. Otherwise the child will trigger a lookup
2195 failure and thereby defer the delivery if it tries to use (for example) a
2196 cached ldap connection that the parent has called unbind on.
2197
2a3eea10
PH
219812. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2199 of $address_data from the recipient verification was clobbered by the
2200 sender verification.
2201
220213. The value of address_data from a sender verification is now available in
2203 $sender_address_data in subsequent conditions in the ACL statement.
2204
23c7ff99
PH
220514. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2206
4deaf07d
PH
220715. Added a new option "connect=<time>" to callout options, to set a different
2208 connection timeout.
2209
926e1192
PH
221016. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2211 was its contents. (It was OK if the option was not defined at all.)
2212
650edc6f
PH
221317. A "Completed" log line is now written for messages that are removed from
2214 the spool by the -Mrm option.
2215
2c7db3f5
PH
221618. New variables $sender_verify_failure and $recipient_verify_failure contain
2217 information about exactly what failed.
2218
3d235903
PH
221919. Added -dd to debug only the daemon process.
2220
7c7ad977
PH
222120. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2222 handles timeouts, both on the server side and network timeouts. Renamed the
2223 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2224
981756db
PH
222521. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2226 It is now set to "smtps".
2227
d4eb88df
PH
222822. $host_address is now set to the target address during the checking of
2229 ignore_target_hosts.
2230
223123. When checking ignore_target_hosts for an ipliteral router, no host name was
2232 being passed; this would have caused $sender_host_name to have been used if
2233 matching the list had actually called for a host name (not very likely,
2234 since this list is usually IP addresses). A host name is now passed as
2235 "[x.x.x.x]".
2236
7d468ab8
PH
223724. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2238 code that specifies a non-restarting handler (typically sigaction() in
2239 modern systems) in an attempt to fix a rare and obscure crash bug.
2240
224125. Narrowed the window for a race in the daemon that could cause it to ignore
2242 SIGCHLD signals. This is not a major problem, because they are used only to
2243 wake it up if nothing else does.
2244
62c0818f
PH
224526. A malformed maildirsize file could cause Exim to calculate negative values
2246 for the mailbox size or file count. Odd effects could occur as a result.
2247 The maildirsize information is now recalculated if the size or filecount
2248 end up negative.
2249
26034054
PH
225027. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2251 support for a long time. Removed HAVE_SYS_VFS_H.
2252
af66f652
PH
225328. Installed the latest version of exipick from John Jetmore.
2254
90af77f4
PH
225529. In an address list, if the pattern was not a regular expression, an empty
2256 subject address (from a bounce message) matched only if the pattern was an
2257 empty string. Non-empty patterns were not even tested. This was the wrong
2258 because it is perfectly reasonable to use an empty address as part of a
2259 database query. An empty address is now tested by patterns that are
2260 lookups. However, all the other forms of pattern expect the subject to
2261 contain a local part and a domain, and therefore, for them, an empty
2262 address still always fails if the pattern is not itself empty.
2263
d8ef3577
PH
226430. Exim went into a mad DNS loop when attempting to do a callout where the
2265 host was specified on an smtp transport, and looking it up yielded more
2266 than one IP address.
2267
5cb8cbc6
PH
226831. Re-factored the code for checking spool and log partition space into a
2269 function that finds that data and another that does the check. The former
2270 is then used to implement four new variables: $spool_space, $log_space,
2271 $spool_inodes, and $log_inodes.
2272
14702f5b
PH
227332. The RFC2047 encoding function was originally intended for short strings
2274 such as real names; it was not keeping to the 75-character limit for
2275 encoded words that the RFC imposes. It now respects the limit, and
2276 generates multiple encoded words if necessary. To be on the safe side, I
2277 have increased the buffer size for the ${rfc2047: expansion operator from
2278 1024 to 2048 bytes.
2279
063b1e99
PH
228033. It is now permitted to omit both strings after an "if" condition; if the
2281 condition is true, the result is "true". As before, when the second string
2282 is omitted, a false condition yields an empty string. This makes it less
2283 cumbersome to write custom ACL and router conditions.
2284
652e1b65
PH
228534. Failure to deliver a bounce message always caused it to be frozen, even if
2286 there was an errors_to setting on the router. The errors_to setting is now
2287 respected.
2288
6f0c9a4f
PH
228935. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2290 canonical form (fully expanded) before being placed in
2291 $sender_host_address.
2292
33397d19
PH
229336. The table in the code that translates DNS record types into text (T_A to
2294 "A" for instance) was missing entries for NS and CNAME. It is just possible
2295 that this could have caused confusion if both these types were looked up
2296 for the same domain, because the text type is used as part of Exim's
2297 per-process caching. But the chance of anyone hitting this buglet seems
2298 very small.
2299
7bb56e1f
PH
230037. The dnsdb lookup has been extended in a number of ways.
2301
2302 (1) There is a new type, "zns", which walks up the domain tree until it
2303 finds some nameserver records. It should be used with care.
2304
ea3bc19b
PH
2305 (2) There is a new type, "mxh", which is like "mx" except that it returns
2306 just the host names, not the priorities.
2307
2308 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2309 looked up. The behaviour when one of the lookups defers can be
2310 controlled by a keyword.
7bb56e1f 2311
ea3bc19b 2312 (4) It is now possible to specify the separator character for use when
7bb56e1f 2313 multiple records are returned.
33397d19 2314
0bcb2a0e
PH
231538. The dnslists ACL condition has been extended: it is now possible to supply
2316 a list of IP addresses and/or domains to be looked up in a particular DNS
2317 domain.
2318
2ac0e484
PH
231939. Added log_selector=+queue_time_overall.
2320
4e1fde53
PH
232140. When running the queue in the test harness, wait just a tad after forking a
2322 delivery process, to get repeatability of debugging output.
2323
de365ded
PH
232441. Include certificate and key file names in error message when GnuTLS fails
2325 to set them up, because the GnuTLS error message doesn't include the name
2326 of the failing file when there is a problem reading it.
2327
f05da2e8
PH
232842. Allow both -bf and -bF in the same test run.
2329
d6453af2
PH
233043. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2331
f7b63901
PH
233244. The "Exiscan patch" is now merged into the mainline Exim source.
2333
233445. Sometimes the final signoff response after QUIT could fail to get
2335 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2336 < 0 before doing a fflush(). This bug looks as though it goes back to the
2337 introduction of TLS in release 3.20, but "sometimes" must have been rare
2338 because the tests only now provoked it.
2339
a444213a
PH
234046. Reset the locale to "C" after calling embedded Perl, in case it was changed
2341 (this can affect the format of dates).
2342
0ec020ea
PH
234347. exim_tidydb, when checking for the continued existence of a message for
2344 which it has found a message-specific retry record, was not finding
2345 messages that were in split spool directories. Consequently, it was
2346 deleting retry records that should have stayed in existence.
2347
b1206957
PH
234848. Steve fixed some bugs in eximstats.
2349
235049. The SPA authentication driver was not abandoning authentication and moving
2351 on to the next authenticator when an expansion was forced to fail,
2352 contradicting the general specification for all authenticators. Instead it
2353 was generating a temporary error. It now behaves as specified.
2354
26dd5a95
PH
235550. The default ordering of permitted cipher suites for GnuTLS was pessimal
2356 (the order specifies the preference for clients). The order is now AES256,
2357 AES128, 3DES, ARCFOUR128.
2358
343b2385
PH
235951. Small patch to Sieve code - explicitly set From: when generating an
2360 autoreply.
2361
1c5466b9
PH
236252. Exim crashed if a remote delivery caused a very long error message to be
2363 recorded - for instance if somebody sent an entire SpamAssassin report back
2364 as a large number of 550 error lines. This bug was coincidentally fixed by
2365 increasing the size of one of Exim's internal buffers (big_buffer) that
2366 happened as part of the Exiscan merge. However, to be on the safe side, I
2367 have made the code more robust (and fixed the comments that describe what
2368 is going on).
2369
55ee9ee3
PH
237053. Now that there can be additional text after "Completed" in log lines (if
2371 the queue_time_overall log selector is set), a one-byte patch to exigrep
2372 was needed to allow it to recognize "Completed" as not the last thing in
2373 the line.
2374
d38f8232
PH
237554. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2376 patch that reportedly fixes this has been added. I am not expert enough to
2377 create a test for it. This is what the patch creator wrote:
2378
2379 "I found a little strange behaviour of ldap code when working with
2380 Windows 2003 AD Domain, where users was placed in more than one
2381 Organization Units. When I tried to give exim partial DN, the exit code
2382 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2383 But simultaneously result of request was absolutely normal ldap result,
2384 so I produce this patch..."
2385
3295e65b
PH
2386 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2387 REFERENCE, so I have modified the code to exclude the patch when that macro
2388 is not defined.
2389
7102e136
PH
239055. Some experimental protocols are using DNS PTR records for new purposes. The
2391 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2392 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2393 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2394 CAN-2005-0021
7102e136 2395
3ca0ba97
PH
239656. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2397
c2bcbe20
PH
239857. Double the size of the debug message buffer (to 2048) so that more of very
2399 long debug lines gets shown.
2400
18ce445d
PH
240158. The exicyclog utility now does better if the number of log files to keep
2402 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2403
1f5b4c3d
PH
240459. Two changes related to the smtp_active_hostname option:
2405
2406 (1) $smtp_active_hostname is now available as a variable.
2407 (2) The default for smtp_banner uses $smtp_active_hostname instead
2408 of $primary_hostname.
2409
b975ba52
PH
241060. The host_aton() function is supposed to be passed a string that is known
2411 to be a valid IP address. However, in the case of IPv6 addresses, it was
2412 not checking this. This is a hostage to fortune. Exim now panics and dies
2413 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2414 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2415 components; fortuitously, this particular loophole had already been fixed
2416 by change 4.50/55 above.
2417
2418 If there are any other similar loopholes, the new check in host_aton()
2419 itself should stop them being exploited. The report I received stated that
2420 data on the command line could provoke the exploit when Exim was running as
2421 exim, but did not say which command line option was involved. All I could
2422 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2423 running as the user.
ea3a6f44 2424 CAN-2005-0021
85b87bc2
PH
2425
242661. There was a buffer overflow vulnerability in the SPA authentication code
2427 (which came originally from the Samba project). I have added a test to the
2428 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2429 CAN-2005-0022
b975ba52 2430
17ffcae7
PH
243162. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2432 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2433
d95f9fdb
PH
243463. The daemon start-up calls getloadavg() while still root for those OS that
2435 need the first call to be done as root, but it missed one case: when
2436 deliver_queue_load_max is set with deliver_drop_privilege. This is
2437 necessary for the benefit of the queue runner, because there is no re-exec
2438 when deliver_drop_privilege is set.
2439
86b8287f
PH
244064. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2441 This has been fixed.
2442
60dc5e56
PH
244365. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2444 was in use, was not putting the data itself into the right store pool;
2445 consequently, it could be overwritten for a subsequent message in the same
2446 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2447 the caching.)
2448
533244af
PH
244966. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2450
a5a28604
PH
245167. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2452 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2453 the function were treating the return as a boolean value, which happened to
2454 work because 0=false and not-0=true, but is not correct code.
2455
7e634d24
PH
245668. The host_aton() function was not handling scoped IPv6 addresses (those
2457 with, for example, "%eth0" on the end) correctly.
2458
3e11c26b
PH
245969. Fixed some compiler warnings in acl.c for the bitmaps specified with
2460 negated items (that is, ~something) in unsigned ints. Some compilers
2461 apparently mutter when there is no cast.
2462
6729cf78
PH
246370. If an address verification called from an ACL failed, and did not produce a
2464 user-specific message (i.e. there was only a "system" message), nothing was
2465 put in $acl_verify_message. In this situation, it now puts the system
2466 message there.
2467
00f00ca5
PH
246871. Change 4.23/11 added synchronization checking at the start of an SMTP
2469 session; change 4.31/43 added the unwanted input to the log line - except
2470 that it did not do this in the start of session case. It now does.
2471
c9bdd01c
PH
247272. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2473 This is wrong and can cause the other end to generate a synchronization
2474 error if it is another Exim or anything else that does the synchronization
2475 check. A QUIT command is no longer sent after a timeout.
2476
d43194df
PH
247773. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2478 during host lookups.
2479
fe5b5d0b
PH
248074. The defer_ok option of callout verification was not working if it was used
2481 when verifying addresses in header lines, that is, for this case:
2482
2483 verify = header_sender/callout=defer_ok
2484
76a2d7ba
PH
248575. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2486 those file descriptors could be used for SMTP connections. If anything
2487 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2488 could be sent to the SMTP client, causing chaos. The daemon now opens
2489 stdin, stdout, and stderr to /dev/null when it puts itself into the
2490 background.
2491
249276. Arrange for output from Perl's "warn" command to be written to Exim's main
2493 log by default. The user can override this with suitable Perl magic.
2494
04f7d5b9
PH
249577. The use of log_message on a "discard" ACL verb, which is supposed to add to
2496 the log message when discard triggers, was not working for the DATA ACL or
2497 for the non-SMTP ACL.
2498
bc60667e
PH
249978. Error message wording change in sieve.c.
2500
bb6e88ff
PH
250179. If smtp_accept_max_per_host was set, the number of connections could be
2502 restricted to fewer than expected, because the daemon was trying to set up
2503 a new connection before checking whether the processes handling previous
2504 connections had finished. The check for completed processes is now done
2505 earlier. On busy systems, this bug wouldn't be noticed because something
2506 else would have woken the daemon, and it would have reaped the completed
2507 process earlier.
2508
1e70f85b
PH
250980. If a message was submitted locally by a user whose login name contained one
2510 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2511 It caused a spool format error. I have fixed the spool reading code. A
2512 related problem was that the "from" clause in the Received: line became
2513 illegal because of the space(s). It is now covered by ${quote_local_part.
2514
251581. Included the latest eximstats from Steve (adds average sizes to HTML Top
2516 tables).
2517
4e01f9d6
PH
251882. Updated OS/Makefile-AIX as per message from Mike Meredith.
2519
1ee1cef2
PH
252083. Patch from Sieve maintainer to fix unterminated string problem in
2521 "vacation" handling.
2522
6e2b4ccc
PH
252384. Some minor changes to the Linux configuration files to help with other
2524 OS variants using glibc.
2525
8e669ac1
PH
252685. One more patch for Sieve to update vacation handling to latest spec.
2527
495ae4b0 2528
bbe902f0
PH
2529----------------------------------------------------
2530See the note above about the 4.44 and 4.50 releases.
2531----------------------------------------------------
2532
2533
2534Exim version 4.44
2535-----------------
2536
2537 1. Change 4.43/35 introduced a bug that caused file counts to be
2538 incorrectly computed when quota_filecount was set in an appendfile
2539 transport
2540
2541 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2542 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2543 place.
2544
2545 3. Give more explanation in the error message when the command for a transport
2546 filter fails to execute.
2547
2548 4. There are several places where Exim runs a non-Exim command in a
2549 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2550 was being done only for the command run by the queryprogram router. It is
2551 now done for all such subprocesses. The other cases are: ${run, transport
2552 filters, and the commands run by the lmtp and pipe transports.
2553
2554 5. Some older OS have a limit of 256 on the maximum number of file
2555 descriptors. Exim was using setrlimit() to set 1000 as a large value
2556 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2557 systems. I've change it so that if it can't get 1000, it tries for 256.
2558
2559 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2560 was an oversight, and furthermore, ever since the addition of extra
2561 controls (e.g. 4.43/32), the checks on when to allow different forms of
2562 "control" were broken. There should now be diagnostics for all cases when a
2563 control that does not make sense is encountered.
2564
2565 7. $recipients is now available in the predata ACL (oversight).
2566
2567 8. Tidy the search cache before the fork to do a delivery from a message
2568 received from the command line. Otherwise the child will trigger a lookup
2569 failure and thereby defer the delivery if it tries to use (for example) a
2570 cached ldap connection that the parent has called unbind on.
2571
2572 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2573 of $address_data from the recipient verification was clobbered by the
2574 sender verification.
2575
257610. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2577 was its contents. (It was OK if the option was not defined at all.)
2578
257911. A "Completed" log line is now written for messages that are removed from
2580 the spool by the -Mrm option.
2581
258212. $host_address is now set to the target address during the checking of
2583 ignore_target_hosts.
2584
258513. When checking ignore_target_hosts for an ipliteral router, no host name was
2586 being passed; this would have caused $sender_host_name to have been used if
2587 matching the list had actually called for a host name (not very likely,
2588 since this list is usually IP addresses). A host name is now passed as
2589 "[x.x.x.x]".
2590
259114. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2592 code that specifies a non-restarting handler (typically sigaction() in
2593 modern systems) in an attempt to fix a rare and obscure crash bug.
2594
259515. Narrowed the window for a race in the daemon that could cause it to ignore
2596 SIGCHLD signals. This is not a major problem, because they are used only to
2597 wake it up if nothing else does.
2598
259916. A malformed maildirsize file could cause Exim to calculate negative values
2600 for the mailbox size or file count. Odd effects could occur as a result.
2601 The maildirsize information is now recalculated if the size or filecount
2602 end up negative.
2603
260417. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2605 support for a long time. Removed HAVE_SYS_VFS_H.
2606
ea3a6f44 260718. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2608
260919. Allow an empty sender to be matched against a lookup in an address list.
2610 Previously the only cases considered were a regular expression, or an
2611 empty pattern.
2612
261320. Exim went into a mad DNS lookup loop when doing a callout where the
2614 host was specified on the transport, if the DNS lookup yielded more than
2615 one IP address.
2616
ea3a6f44
NM
261721. The RFC2047 encoding function was originally intended for short strings
2618 such as real names; it was not keeping to the 75-character limit for
2619 encoded words that the RFC imposes. It now respects the limit, and
2620 generates multiple encoded words if necessary. To be on the safe side, I
2621 have increased the buffer size for the ${rfc2047: expansion operator from
2622 1024 to 2048 bytes.
bbe902f0 2623
ea3a6f44
NM
262422. Failure to deliver a bounce message always caused it to be frozen, even if
2625 there was an errors_to setting on the router. The errors_to setting is now
2626 respected.
bbe902f0
PH
2627
262823. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2629 canonical form (fully expanded) before being placed in
2630 $sender_host_address.
2631
263224. Updated eximstats to version 1.33
2633
ea3a6f44
NM
263425. Include certificate and key file names in error message when GnuTLS fails
2635 to set them up, because the GnuTLS error message doesn't include the name
2636 of the failing file when there is a problem reading it.
bbe902f0
PH
2637
263826. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2639 As per change 25.
bbe902f0 2640
ea3a6f44
NM
264127. Reset the locale to "C" after calling embedded Perl, in case it was changed
2642 (this can affect the format of dates).
bbe902f0 2643
ea3a6f44
NM
264428. exim_tidydb, when checking for the continued existence of a message for
2645 which it has found a message-specific retry record, was not finding
2646 messages that were in split spool directories. Consequently, it was
2647 deleting retry records that should have stayed in existence.
bbe902f0
PH
2648
264929. eximstats updated to version 1.35
2650 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2651 1.35 - bugfix such that pie charts by volume are generated correctly
2652
ea3a6f44
NM
265330. The SPA authentication driver was not abandoning authentication and moving
2654 on to the next authenticator when an expansion was forced to fail,
2655 contradicting the general specification for all authenticators. Instead it
2656 was generating a temporary error. It now behaves as specified.
bbe902f0 2657
ea3a6f44
NM
265831. The default ordering of permitted cipher suites for GnuTLS was pessimal
2659 (the order specifies the preference for clients). The order is now AES256,
2660 AES128, 3DES, ARCFOUR128.
bbe902f0 2661
ea3a6f44
NM
266231. Small patch to Sieve code - explicitly set From: when generating an
2663 autoreply.
bbe902f0 2664
ea3a6f44
NM
266532. Exim crashed if a remote delivery caused a very long error message to be
2666 recorded - for instance if somebody sent an entire SpamAssassin report back
2667 as a large number of 550 error lines. This bug was coincidentally fixed by
2668 increasing the size of one of Exim's internal buffers (big_buffer) that
2669 happened as part of the Exiscan merge. However, to be on the safe side, I
2670 have made the code more robust (and fixed the comments that describe what
2671 is going on).
bbe902f0 2672
ea3a6f44
NM
267333. Some experimental protocols are using DNS PTR records for new purposes. The
2674 keys for these records are domain names, not reversed IP addresses. The
2675 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2676 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2677 CAN-2005-0021
2678
ea3a6f44
NM
267934. The host_aton() function is supposed to be passed a string that is known
2680 to be a valid IP address. However, in the case of IPv6 addresses, it was
2681 not checking this. This is a hostage to fortune. Exim now panics and dies
2682 if the condition is not met. A case was found where this could be provoked
2683 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2684 components; fortuitously, this particular loophole had already been fixed
2685 by change 4.50/55 or 4.44/33 above.
2686
2687 If there are any other similar loopholes, the new check in host_aton()
2688 itself should stop them being exploited. The report I received stated that
2689 data on the command line could provoke the exploit when Exim was running as
2690 exim, but did not say which command line option was involved. All I could
2691 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2692 running as the user.
bbe902f0
PH
2693 CAN-2005-0021
2694
ea3a6f44
NM
269535. There was a buffer overflow vulnerability in the SPA authentication code
2696 (which came originally from the Samba project). I have added a test to the
2697 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2698 CAN-2005-0022
2699
ea3a6f44
NM
270036. The daemon start-up calls getloadavg() while still root for those OS that
2701 need the first call to be done as root, but it missed one case: when
2702 deliver_queue_load_max is set with deliver_drop_privilege. This is
2703 necessary for the benefit of the queue runner, because there is no re-exec
2704 when deliver_drop_privilege is set.
bbe902f0 2705
ea3a6f44
NM
270637. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2707 was in use, was not putting the data itself into the right store pool;
2708 consequently, it could be overwritten for a subsequent message in the same
2709 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2710 the caching.)
bbe902f0 2711
ea3a6f44
NM
271238. Sometimes the final signoff response after QUIT could fail to get
2713 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2714 < 0 before doing a fflush(). This bug looks as though it goes back to the
2715 introduction of TLS in release 3.20, but "sometimes" must have been rare
2716 because the tests only now provoked it.
bbe902f0
PH
2717
2718
495ae4b0
PH
2719Exim version 4.43
2720-----------------
2721
2722 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2723 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2724 Now it returns an integer. A number of calls were still expecting a T/F
2725 return. Fortuitously, in all cases, the tests worked in OK situations,
2726 which is the norm. However, things would have gone wrong on any write
2727 failures on the smtp file descriptor. This function is used when sending
2728 messages over SMTP and also when doing verify callouts.
2729
2730 2. When Exim is called to do synchronous delivery of a locally submitted
2731 message (the -odf or -odi options), it no longer closes stderr before doing
2732 the delivery.
2733
2734 3. Implemented the mua_wrapper option.
2735
2736 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2737
2738 5. Implemented the functions header_remove(), header_testname(),
2739 header_add_at_position(), and receive_remove_recipient(), and exported them
2740 to local_scan().
2741
2742 6. If an ACL "warn" statement specified the addition of headers, Exim already
2743 inserted X-ACL-Warn: at the start if there was no header name. However, it
2744 was not making this test for the second and subsequent header lines if
2745 there were newlines in the string. This meant that an invalid header could
2746 be inserted if Exim was badly configured.
2747
2748 7. Allow an ACL "warn" statement to add header lines at the start or after all
2749 the Received: headers, as well as at the end.
2750
2751 8. Added the rcpt_4xx retry error code.
2752
2753 9. Added postmaster_mailfrom=xxx to callout verification option.
2754
275510. Added mailfrom=xxxx to the callout verification option, for verify=
2756 header_sender only.
2757
275811. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2759 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2760
276112. Inserted some casts to stop certain compilers warning when using pointer
2762 differences as field lengths or precisions in printf-type calls (mostly
2763 affecting debugging statements).
2764
276513. Added optional readline() support for -be (dynamically loaded).
2766
276714. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2768 same clock tick as a message's arrival, so that its received time was the
2769 same as the "first fail" time on the retry record, and that message
2770 remained on the queue past the ultimate address timeout, every queue runner
2771 would try a delivery (because it was past the ultimate address timeout) but
2772 after another failure, the ultimate address timeout, which should have then
2773 bounced the address, did not kick in. This was a "< instead of <=" error;
2774 in most cases the first failure would have been in the next clock tick
2775 after the received time, and all would be well.
2776
277715. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2778 being recognized when the domain list was tested by the match_domain
2779 condition in an expansion string.
2780
278116. Added the ${str2b64: operator.
2782
278317. Exim was always calling setrlimit() to set a large limit for the number of
2784 processes, without checking whether the existing limit was already
2785 adequate. (It did check for the limit on file descriptors.) Furthermore,
2786 errors from getrlimit() and setrlimit() were being ignored. Now they are
2787 logged to the main and panic logs, but Exim does carry on, to try to do its
2788 job under whatever limits there are.
2789
279018. Imported PCRE 5.0.
2791
279219. Trivial typo in log message " temporarily refused connection" (the leading
2793 space).
2794
279520. If the log selector return_path_on_delivery was set and an address was
2796 redirected to /dev/null, the delivery process crashed because it assumed
2797 that a return path would always be set for a "successful" delivery. In this
2798 case, the whole delivery is bypassed as an optimization, and therefore no
2799 return path is set.
2800
280121. Internal re-arrangement: the function for sending a challenge and reading
2802 a response while authentication was assuming a zero-terminated challenge
2803 string. It's now changed to take a pointer and a length, to allow for
2804 binary data in such strings.
2805
280622. Added the cyrus_sasl authenticator (code supplied by MBM).
2807
280823. Exim was not respecting finduser_retries when seeking the login of the
2809 uid under which it was called; it was always trying 10 times. (The default
2810 setting of finduser_retries is zero.) Also, it was sleeping after the final
2811 failure, which is pointless.
2812
281324. Implemented tls_on_connect_ports.
2814
281525. Implemented acl_smtp_predata.
2816
281726. If the domain in control=submission is set empty, Exim assumes that the
2818 authenticated id is a complete email address when it generates From: or
2819 Sender: header lines.
2820
282127. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2822 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2823 chown and chgrp in /bin and hostname in /usr/bin.
2824
282528. Exim was keeping the "process log" file open after each use, just as it
2826 does for the main log. This opens the possibility of it remaining open for
2827 long periods when the USR1 signal hits a daemon. Occasional processlog
2828 errors were reported, that could have been caused by this. Anyway, it seems
2829 much more sensible not to leave this file open at all, so that is what now
2830 happens.
2831
283229. The long-running daemon process does not normally write to the log once it
2833 has entered its main loop, and it closes the log before doing so. This is
2834 so that log files can straightforwardly be renamed and moved. However,
2835 there are a couple of unusual error situations where the daemon does write
2836 log entries, and I had neglected to close the log afterwards.
2837
283830. The text of an SMTP error response that was received during a remote
2839 delivery was being truncated at 512 bytes. This is too short for some of
2840 the long messages that one sometimes sees. I've increased the limit to
2841 1024.
2842
284331. It is now possible to make retry rules that apply only when a message has a
2844 specific sender, in particular, an empty sender.
2845
284632. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2847 it possible to be selective about when SMTP synchronization is enforced.
2848
284933. Added "control = caseful_local_part" and "control = "caselower_local_part".
2850
285132. Implemented hosts_connection_nolog.
2852
285333. Added an ACL for QUIT.
2854
285534. Setting "delay_warning=" to disable warnings was not working; it gave a
2856 syntax error.
2857
285835. Added mailbox_size and mailbox_filecount to appendfile.
2859
286036. Added control = no_multiline_responses to ACLs.
2861
286237. There was a bug in the logic of the code that waits for the clock to tick
2863 in the case where the clock went backwards by a substantial amount such
2864 that the microsecond fraction of "now" was more than the microsecond
2865 fraction of "then" (but the whole seconds number was less).
2866
286738. Added support for the libradius Radius client library this is found on
2868 FreeBSD (previously only the radiusclient library was supported).
2869
2870
2871Exim version 4.42
2872-----------------
2873
2874 1. When certain lookups returned multiple values in the form name=value, the
2875 quoting of the values was not always being done properly. Specifically:
2876 (a) If the value started with a double quote, but contained no whitespace,
2877 it was not quoted.
2878 (b) If the value contained whitespace other than a space character (i.e.
2879 tabs or newlines or carriage returns) it was not quoted.
2880 This fix has been applied to the mysql and pgsql lookups by writing a
2881 separate quoting function and calling it from the lookup code. The fix
2882 should probably also be applied to nisplus, ibase and oracle lookups, but
2883 since I cannot test any of those, I have not disturbed their existing code.
2884
2885 2. A hit in the callout cache for a specific address caused a log line with no
2886 reason for rejecting RCPT. Now it says "Previous (cached) callout
2887 verification failure".
2888
2889 3. There was an off-by-one bug in the queryprogram router. An over-long
2890 return line was truncated at 256 instead of 255 characters, thereby
2891 overflowing its buffer with the terminating zero. As well as fixing this, I
2892 have increased the buffer size to 1024 (and made a note to document this).
2893
2894 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2895 when Exim is waiting for an SMTP response from a remote server, Exim
2896 restarts its select() call on the socket, thereby resetting its timeout.
2897 This is not a problem when such interrupts are rare. Somebody set up a cron
2898 job to run exiwhat every 2 minutes, which is less than the normal select()
2899 timeout (5 or 10 minutes). This meant that the select() timeout never
2900 kicked in because it was always reset. I have fixed this by comparing the
2901 time when an interrupt arrives with the time at the start of the first call
2902 to select(). If more time than the timeout has elapsed, the interrupt is
2903 treated as a timeout.
2904
2905 5. Some internal re-factoring in preparation for the addition of Sieve
2906 extensions (by MH). In particular, the "personal" test is moved to a
2907 separate function, and given an option for scanning Cc: and Bcc: (which is
2908 not set for Exim filters).
2909
2910 6. When Exim created an email address using the login of the caller as the
2911 local part (e.g. when creating a From: or Sender: header line), it was not
2912 quoting the local part when it contained special characters such as @.
2913
2914 7. Installed new OpenBSD configuration files.
2915
2916 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2917 try to make them clearer.
2918
2919 9. Callout options, other than the timeout value, were being ignored when
2920 verifying sender addresses in header lines. For example, when using
2921
2922 verify = header_sender/callout=no_cache
2923
2924 the cache was (incorrectly) being used.
2925
292610. Added a missing instance of ${EXE} to the exim_install script; this affects
2927 only the Cygwin environment.
2928
292911. When return_path_on_delivery was set as a log selector, if different remote
2930 addresses in the same message used different return paths and parallel
2931 remote delivery occurred, the wrong values would sometimes be logged.
2932 (Whenever a remote delivery process finished, the return path value from
2933 the most recently started remote delivery process was logged.)
2934
293512. RFC 3848 specifies standard names for the "with" phrase in Received: header
2936 lines when AUTH and/or TLS are in use. This is the "received protocol"
2937 field. Exim used to use "asmtp" for authenticated SMTP, without any
2938 indication (in the protocol name) for TLS use. Now it follows the RFC and
2939 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2940 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2941 names appear in log lines as well as in Received: header lines.
2942
294313. Installed MH's patches for Sieve to add the "copy" and "vacation"
2944 extensions, and comparison tests, and to fix some bugs.
2945
294614. Changes to the "personal" filter test:
2947
2948 (1) The test was buggy in that it was just doing the equivalent of
2949 "contains" tests on header lines. For example, if a user's address was
2950 anne@some.where, the "personal" test would incorrectly be true for
2951
2952 To: susanne@some.where
2953
2954 This test is now done by extracting each address from the header in turn,
2955 and checking the entire address. Other tests that are part of "personal"
2956 are now done using regular expressions (for example, to check local parts
2957 of addresses in From: header lines).
2958
2959 (2) The list of non-personal local parts in From: addresses has been
2960 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2961 taken from the Sieve specification recommendations.
2962
2963 (3) If the message contains any header line starting with "List-" it is
2964 treated as non-personal.
2965
2966 (4) The test for "circular" in the Subject: header line has been removed
2967 because it now seems ill-conceived.
2968
296915. Minor typos in src/EDITME comments corrected.
2970
297116. Installed latest exipick from John Jetmore.
2972
297317. If headers_add on a router specified a text string that was too long for
2974 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2975 of string_sprintf() is now avoided.
2976
297718. $message_body_size was not set (it was always zero) when running the DATA
2978 ACL and the local_scan() function.
2979
298019. For the "mail" command in an Exim filter, no default was being set for
2981 the once_repeat time, causing a random time value to be used if "once" was
2982 specified. (If the value happened to be <= 0, no repeat happened.) The
2983 default is now 0s, meaning "never repeat". The "vacation" command was OK
2984 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2985 (I found it when inspecting the code).
2986
298720. There is now an overall timeout for performing a callout verification. It
2988 defaults to 4 times the callout timeout, which applies to individual SMTP
2989 commands during the callout. The overall timeout applies when there is more
2990 than one host that can be tried. The timeout is checked before trying the
2991 next host. This prevents very long delays if there are a large number of
2992 hosts and all are timing out (e.g. when the network connections are timing
2993 out). The value of the overall timeout can be changed by specifying an
2994 additional sub-option for "callout", called "maxwait". For example:
2995
2996 verify = sender/callout=5s,maxwait=20s
2997
299821. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2999 to the end before writing, but this should make it even safer).
3000
300122. Exim was forgetting that it had advertised PIPELINING for the second and
3002 subsequent messages on an SMTP connection. It was also not resetting its
3003 memory on STARTTLS and an internal HELO.
3004
300523. When Exim logs an SMTP synchronization error within a session, it now
3006 records whether PIPELINING has been advertised or not.
3007
300824. Added 3 instances of "(long int)" casts to time_t variables that were being
3009 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
3010 rather than long int.
3011
301225. Installed the latest Cygwin configuration files from the Cygwin maintainer.
3013
301426. Added the never_mail option to autoreply.
3015
3016
3017Exim version 4.41
3018-----------------
3019
3020 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
3021 crash if the getsockname() call failed; this can happen if a connection is
3022 closed very soon after it is established. The problem was simply in the
3023 order in which certain operations were done, causing Exim to try to write
3024 to the SMTP stream before it had set up the file descriptor. The bug has
3025 been fixed by making things happen in the correct order.
3026
3027
3028Exim version 4.40
3029-----------------
3030
3031 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
3032 before the connection was closed, thus losing the rejection response.
3033
3034 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
3035 some early Solaris releases, but causes trouble in current releases where
3036 socklen_t is defined.
3037
3038 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
3039 always exist.
3040
3041 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
3042 configured.
3043
3044 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
3045 that releasing the top of it at the end releases what was used for sub-
3046 expansions (unless the block got too big). However, discard this block if
3047 the first thing is a variable or header, so that we can use its block when
3048 it is dynamic (useful for very large $message_headers, for example).
3049
3050 6. Lookups now cache *every* query, not just the most recent. A new, separate
3051 store pool is used for this. It can be recovered when all lookup caches are
3052 flushed. Lookups now release memory at the end of their result strings.
3053 This has involved some general refactoring of the lookup sources.
3054
3055 7. Some code has been added to the store_xxx() functions to reduce the amount
3056 of flapping under certain conditions.
3057
3058 8. log_incoming_interface used to affect only the <= reception log lines. Now
3059 it causes the local interface and port to be added to several more SMTP log
3060 lines, for example "SMTP connection from", and rejection lines.
3061
3062 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
3063
306410. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
3065
306611. If $host_data was set by virtue of a hosts lookup in an ACL, its value
3067 could be overwritten at the end of the current message (or the start of a
3068 new message if it was set in a HELO ACL). The value is now preserved for
3069 the duration of the SMTP connection.
3070
307112. If a transport had a headers_rewrite setting, and a matching header line
3072 contained an unqualified address, that address was qualified, even if it
3073 did not match any rewriting rules. The underlying bug was that the values
3074 of the flags that permit the existence of unqualified sender and recipient
3075 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
3076 non-local messages, and by -bnq for local messages) were not being
3077 preserved with the message after it was received.
3078
307913. When Exim was logging an SMTP synchronization error, it could sometimes log
3080 "next input=" as part of the text comprising the host identity instead of
3081 the correct text. The code was using the same buffer for two different
3082 strings. However, depending on which order the printing function evaluated
3083 its arguments, the bug did not always show up. Under Linux, for example, my
3084 test suite worked just fine.
3085
308614. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
3087 doesn't work with some older versions of Perl. It has been changed to "my",
3088 which in any case is probably the better facility to use.
3089
309015. A really picky compiler found some instances of statements for creating
3091 error messages that either had too many or two few arguments for the format
3092 string.
3093
309416. The size of the buffer for calls to the DNS resolver has been increased
3095 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
3096 for addresses that have a lot of PTR records. This alleviates a problem; it
3097 does not fully solve it.
3098
309917. A dnsdb lookup for PTR records that receives more data than will fit in the
3100 buffer now truncates the list and logs the incident, which is the same
3101 action as happens when Exim is looking up a host name and its aliases.
3102 Previously in this situation something unpredictable would happen;
3103 sometimes it was "internal error: store_reset failed".
3104
310518. If a server dropped the connection unexpectedly when an Exim client was
3106 using GnuTLS and trying to read a response, the client delivery process
3107 crashed while trying to generate an error log message.
3108
310919. If a "warn" verb in an ACL added multiple headers to a message in a single
3110 string, for example:
3111
3112 warn message = H1: something\nH2: something
3113
3114 the text was added as a single header line from Exim's point of view
3115 though it ended up OK in the delivered message. However, searching for the
3116 second and subsequent header lines using $h_h2: did not work. This has been
3117 fixed. Similarly, if a system filter added multiple headers in this way,
3118 the routers could not see them.
3119
312020. Expanded the error message when iplsearch is called with an invalid key to
3121 suggest using net-iplsearch in a host list.
3122
312321. When running tests using -bh, any delays imposed by "delay" modifiers in
3124 ACLs are no longer actually imposed (and a message to that effect is
3125 output).
3126
312722. If a "gecos" field in a passwd entry contained escaped characters, in
3128 particular, if it contained a \" sequence, Exim got it wrong when building
3129 a From: or a Sender: header from that name. A second bug also caused
3130 incorrect handling when an unquoted " was present following a character
3131 that needed quoting.
3132
313323. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3134 was not being matched caselessly.
3135
313624. Arranged for all hyphens in the exim.8 source to be escaped with
3137 backslashes.
3138
313925. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3140 properly. Recipient callout cache records were still being keyed to include
3141 the sender, even when use_sender was set false. This led to far more
3142 callouts that were necessary. The sender is no longer included in the key
3143 when use_sender is false.
3144
314526. Added "control = submission" modifier to ACLs.
3146
314727. Added the ${base62d: operator to decode base 62 numbers.
3148
314928. dnsdb lookups can now access SRV records.
3150
315129. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3152 the configuration file.
3153
315430. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3155 (-v) mode. This makes the output for a verbose queue run more intelligible.
3156
315731. Added a use_postmaster feature to recipient callouts.
3158
315932. Added the $body_zerocount variable, containing the number of binary zero
3160 bytes in the message body.
3161
316233. The time of last modification of the "new" subdirectory is now used as the
3163 "mailbox time last read" when there is a quota error for a maildir
3164 delivery.
3165
316634. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3167
316835. Added +ignore_unknown as a special item in host lists.
3169
317036. Code for decoding IPv6 addresses in host lists is now included, even if
3171 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3172 address was recognized as an IP address, but was then not correctly decoded
3173 into binary, causing unexpected and incorrect effects when compared with
3174 another IP address.
3175
3176
3177Exim version 4.34
3178-----------------
3179
3180 1. Very minor rewording of debugging text in manualroute to say "list of
3181 hosts" instead of "hostlist".
3182
3183 2. If verify=header_syntax was set, and a header line with an unqualified
3184 address (no domain) and a large number of spaces between the end of the
3185 name and the colon was received, the reception process suffered a buffer
3186 overflow, and (when I tested it) crashed. This was caused by some obsolete
3187 code that should have been removed. The fix is to remove it!
3188
3189 3. When running in the test harness, delay a bit after writing a bounce
3190 message to get a bit more predictability in the log output.
3191
3192 4. Added a call to search_tidyup() just before forking a reception process. In
3193 theory, someone could use a lookup in the expansion of smtp_accept_max_
3194 per_host which, without the tidyup, could leave open a database connection.
3195
3196 5. Added the variables $recipient_data and $sender_data which get set from a
3197 lookup success in an ACL "recipients" or "senders" condition, or a router
3198 "senders" option, similar to $domain_data and $local_part_data.
3199
3200 6. Moved the writing of debug_print from before to after the "senders" test
3201 for routers.
3202
3203 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3204 problems for message scanning, either using a data ACL, or using
3205 local_scan() because the Received: header was not generated till after they
3206 were called (in order to set the time as the time of reception completion).
3207 I have revised the way this works. The header is now generated after the
3208 body is received, but before the ACL or local_scan() are called. After they
3209 are run, the timestamp in the header is updated.
3210
3211
3212Exim version 4.33
3213-----------------
3214
3215 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3216 before starting a queue runner without re-exec. This happened only when
3217 deliver_drop_privilege was set or when the Exim user was set to root. The
3218 effect of the bug was that timeouts during subsequent deliveries caused
3219 crashes instead of being properly handled. The handler is now left at its
3220 default (and expected) setting.
3221
3222 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3223 message, again when deliver_drop_privilege is set or Exim is run as root.
3224 The bug described in (1) was not present in this case, but the tidying up
3225 of the other signals was missing. I have made the two cases consistent.
3226
3227 3. The ignore_target_hosts setting on a manualroute router was being ignored
3228 for hosts that were looked up using the /MX notation.
3229
3230 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3231 in domain lists.
3232
3233 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3234 operated on the sender address. After changing the $sender_address to <>
3235 for the sender address verify, Exim was re-instated it as the original
3236 (before rewriting) address, but remembering that it had rewritten it, so it
3237 wasn't rewriting it again. This bug also had the effect of breaking the
3238 sender address verification caching when the sender address was rewritten.
3239
3240 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3241 This has been changed so that if the ip literal address matches
3242 ignore_target_hosts, the router declines.
3243
3244 7. Added expansion conditions match_domain, match_address, and match_local_
3245 part (NOT match_host).
3246
3247 8. The placeholder for the Received: header didn't have a length field set.
3248
3249 9. Added code to Exim itself and to exim_lock to test for a specific race
3250 condition that could lead to file corruption when using MBX delivery. The
3251 issue is with the lockfile that is created in /tmp. If this file is removed
3252 after a process has opened it but before that process has acquired a lock,
3253 there is the potential for a second process to recreate the file and also
3254 acquire a lock. This could lead to two Exim processes writing to the file
3255 at the same time. The added code performs the same test as UW imapd; it
3256 checks after acquiring the lock that its file descriptor still refers to
3257 the same named file.
3258
325910. The buffer for building added header lines was of fixed size, 8192 bytes.
3260 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3261 when Exim is built.
3262
326311. Added the smtp_active_hostname option. If used, this will typically be made
3264 to depend on the incoming interface address. Because $interface_address is
3265 not set up until the daemon has forked a reception process, error responses
3266 that can happen earlier (such as "too many connections") no longer contain
3267 a host name.
3268
326912. If an expansion in a condition on a "warn" statement fails because a lookup
3270 defers, the "warn" statement is abandoned, and the next ACL statement is
3271 processed. Previously this caused the whole ACL to be aborted.
3272
327313. Added the iplsearch lookup type.
3274
327514. Added ident_timeout as a log selector.
3276
327715. Added tls_certificate_verified as a log selector.
3278
327916. Added a global option tls_require_ciphers (compare the smtp transport
3280 option of the same name). This controls incoming TLS connections.
3281
328217. I finally figured out how to make tls_require_ciphers do a similar thing
3283 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3284 before starting the TLS session.
3285
328618. Tabs are now shown as \t in -bP output.
3287
328819. If the log selector return_path_on_delivery was set, Exim crashed when
3289 bouncing a message because it had too many Received: header lines.
3290
329120. If two routers both had headers_remove settings, and the first one included
3292 a superfluous trailing colon, the final name in the first list and the
3293 first name in the second list were incorrectly joined into one item (with a
3294 colon in the middle).
3295
3296
3297Exim version 4.32
3298-----------------
3299
3300 1. Added -C and -D options to the exinext utility, mainly to make it easier
3301 to include in the automated testing, but these could be helpful when
3302 multiple configurations are in use.
3303
3304 2. The exinext utility was not formatting the output nicely when there was
3305 an alternate port involved in the retry record key, nor when there was a
3306 message id as well (for retries that were specific to a specific message
3307 and a specific host). It was also confused by IPv6 addresses, because of
3308 the additional colons they contain. I have fixed the IPv4 problem, and
3309 patched it up to do a reasonable job for IPv6.
3310
3311 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3312 delivery, the log line now contains "pipelined" if PIPELINING was used.
3313
3314 4. An SMTP transport process used to panic and die if the bind() call to set
3315 an explicit outgoing interface failed. This has been changed; it is now
3316 treated in the same way as a connect() failure.
3317
3318 5. A reference to $sender_host_name in the part of a conditional expansion
3319 that was being skipped was still causing a DNS lookup. This no longer
3320 occurs.
3321
3322 6. The def: expansion condition was not recognizing references to header lines
3323 that used bh_ and bheader_.
3324
3325 7. Added the _cache feature to named lists.
3326
3327 8. The code for checking quota_filecount in the appendfile transport was
3328 allowing one more file than it should have been.
3329
3330 9. For compatibility with Sendmail, the command line option
3331
3332 -prval:sval
3333
3334 is equivalent to
3335
3336 -oMr rval -oMs sval
3337
3338 and sets the incoming protocol and host name (for trusted callers). The
3339 host name and its colon can be omitted when only the protocol is to be set.
3340 Note the Exim already has two private options, -pd and -ps, that refer to
3341 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3342 "s", but I don't think that's a major issue.
3343
334410. A number of refactoring changes to the code, none of which should affect
3345 Exim's behaviour:
3346
3347 (a) The number of logging options was getting close to filling up the
3348 32-bit word that was used as a bit map. I have split them into two classes:
3349 those that are passed in the argument to log_write(), and those that are
3350 only ever tested independently outside of that function. These are now in
3351 separate 32-bit words, so there is plenty of room for expansion again.
3352 There is no change in the user interface or the logging behaviour.
3353
3354 (b) When building, for example, log lines, the code previously used a
3355 macro that called string_cat() twice, in order to add two strings. This is
3356 not really sufficiently general. Furthermore, there was one instance where
3357 it was actually wrong because one of the argument was used twice, and in
3358 one call a function was used. (As it happened, calling the function twice
3359 did not affect the overall behaviour.) The macro has been replaced by a
3360 function that can join an arbitrary number of extra strings onto a growing
3361 string.
3362
3363 (c) The code for expansion conditions now uses a table and a binary chop
3364 instead of a serial search (which was left over from when there were very
3365 few conditions). Also, it now recognizes conditions like "pam" even when
3366 the relevant support is not compiled in: a suitably worded error message is
3367 given if an attempt is made to use such a condition.
3368
336911. Added ${time_interval:xxxxx}.
3370
337112. A bug was causing one of the ddress fields not to be passed back correctly
3372 from remote delivery subprocesses. The field in question was not being
3373 subsequently used, so this caused to problems in practice.
3374
337513. Added new log selectors queue_time and deliver_time.
3376
337714. Might have fixed a bug in maildirsizefile handling that threw up
3378 "unexpected character" debug warnings, and recalculated the data
3379 unnecessarily. In any case, I expanded the warning message to give more
3380 information.
3381
338215. Added the message "Restricted characters in address" to the statements in
3383 the default ACL that block characters like @ and % in local parts.
3384
338516. Change 71 for release 4.31 proved to be much less benign that I imagined.
3386 Three changes have been made:
3387
3388 (a) There was a serious bug; a negative response to MAIL caused the whole
3389 recipient domain to be cached as invalid, thereby blocking all messages
3390 to all local parts at the same domain, from all senders. This bug has
3391 been fixed. The domain is no longer cached after a negative response to
3392 MAIL if the sender used is not empty.
3393
3394 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3395 been restored.
3396
3397 (c) A new callout option, "use_sender" has been added for people who want
3398 the modified behaviour.
3399
3400
3401Exim version 4.31
3402-----------------
3403
3404 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3405 Larry Rosenman.
3406
3407 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3408 indeed breaks things for older releases.
3409
3410 3. Added additional logging to the case where there is a problem reading data
3411 from a filter that is running in a subprocess using a pipe, in order to
3412 try to track down a specific problem.
3413
3414 4. Testing facility fudge: when running in the test harness and attempting
3415 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3416 getting "No route to host". Convert this to a timeout.
3417
3418 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3419 warning.
3420
3421 6. Some OS don't have socklen_t but use size_t instead. This affects the
3422 fifth argument of getsockopt() amongst other things. This is now
3423 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3424 can be set for individual OS. I have set it for SunOS5, OSF1, and
3425 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3426 some earlier ones do not.
3427
3428 7. Change 4.30/15 was not doing the test caselessly.
3429
3430 8. The standard form for an IPv6 address literal was being rejected by address
3431 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3432 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3433 this, as well as the form without the "IPv6" on the front (but only when
3434 address literals are enabled, of course).
3435
3436 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3437
343810. Exim crashed if a message with an empty sender address specified by -f
3439 encountered a router with an errors_to setting. This could be provoked only
3440 by a command such as
3441
3442 exim -f "" ...
3443
3444 where an empty string was supplied; "<>" did not hit this bug.
3445
344611. Installed PCRE release 4.5.
3447
344812. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3449 remained set. It is now erased.
3450
345113. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3452 times from message ids (which are base 36 rather than the normal 62).
3453
345414. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3455 were being counted as actual protocol errors, and logged if the log
3456 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3457 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3458 and DATA following a set of rejected RCPTs do not count as protocol errors.
3459 In other words, Exim assumes they were pipelined, though this may not
3460 actually be the case. Of course, in all cases the client gets an
3461 appropriate error code.
3462
346315. If a lookup fails in an ACL condition, a message about the failure may
3464 be available; it is used if testing the ACL cannot continue, because most
3465 such messages specify what the cause of the deferral is. However, some
3466 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3467 that caused an old message to be retained and used if a later statement
3468 caused a defer, replacing the real cause of the deferral.
3469
347016. If an IP address had so many PTR records that the DNS lookup buffer
3471 was not large enough to hold them, Exim could crash while trying to process
3472 the truncated data. It now detects and logs this case.
3473
347417. Further to 4.21/58, another change has been made: if (and only if) the
3475 first line of a message (the first header line) ends with CRLF, a bare LF
3476 in a subsequent header line has a space inserted after it, so as not to
3477 terminate the header.
3478
347918. Refactoring: tidied an ugly bit of code in appendfile that copied data
3480 unnecessarily, used atoi() instead of strtol(), and didn't check the
3481 termination when getting file sizes from file names by regex.
3482
348319. Completely re-implemented the support for maildirsize files, in the light
3484 of a number of problems with the previous contributed implementation
3485 (4.30/29). In particular:
3486
3487 . If the quota is zero, the maildirsize file is maintained, but no quota is
3488 imposed.
3489
3490 . If the maildir directory does not exist, it is created before any attempt
3491 to write a maildirsize file.
3492
3493 . The quota value in the file is just a cache; if the quota is changed in
3494 the transport, the new value overrides.
3495
3496 . A regular expression is available for excluding directories from the
3497 count.
3498
349920. The autoreply transport checks the characters in options that define the
3500 message's headers; it allows continued headers, but it was checking with
3501 isspace() after an embedded newline instead of explicitly looking for a
3502 space or a tab.
3503
350421. If all the "regular" hosts to which an address was routed had passed their
3505 expiry times, and had not reached their retry times, the address was
3506 bounced, even if fallback hosts were defined. Now Exim should go on to try
3507 the fallback hosts.
3508
350922. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3510 equivalent code in the SMTP transport. Some hosts send humungous responses
3511 to HELO/EHLO, more than 1024 it seems.
3512
351323. Refactoring: code in filter.c used (void *) for "any old type" but this
3514 gives compiler warnings in some environments. I've now done it "properly",
3515 using a union.
3516
351724. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3518 (because of problems with the built-in one) was declared to return uschar *
3519 instead of char *, causing compiler failure.
3520
352125. Fixed a file descriptor leak when processing alias/forward files.
3522
352326. Fixed a minor format string issue in dbfn.c.
3524
352527. Typo in exim.c: ("dmbnz" for "dbmnz").
3526
352728. If a filter file refered to $h_xxx or $message_headers, and the headers
3528 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3529 become corrupted.
3530
353129. When a sender address is verified, it is cached, to save repeating the test
3532 when there is more than one recipient in a message. However, when the
3533 verification involves a callout, it is possible for different callout
3534 options to be set for different recipients. It is too complicated to keep
3535 track of this in the cache, so now Exim always runs a verification when a
3536 callout is required, relying on the callout cache for the optimization.
3537 The overhead is duplication of the address routing, but this should not be
3538 too great.
3539
354030. Fixed a bug in callout caching. If a RCPT command caused the sender address
3541 to be verified with callout=postmaster, and the main callout worked but the
3542 postmaster check failed, the verification correctly failed. However, if a
3543 subsequent RCPT command asked for sender verification *without* the
3544 postmaster check, incorrect caching caused this verification also to fail,
3545 incorrectly.
3546
354731. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3548 it was not caching the DNS options (qualify_single, search_parents) that
3549 were used when the lookup failed. A subsequent lookup with different
3550 options therefore always gave the same answer, though there were cases
3551 where it should not have. (Example: a "domains = !$mx_any" option on a
3552 dnslookup router: the "domains" option is always processed without any
3553 widening, but the router might have qualify_single set.) Now Exim uses the
3554 cached value only when the same options are set.
3555
355632. Added John Jetmore's "exipick" utility to the distribution.
3557
355833. GnuTLS: When an attempt to start a TLS session fails for any reason other
3559 than a timeout (e.g. a certificate is required, and is not provided), an
3560 Exim server now closes the connection immediately. Previously it waited for
3561 the client to close - but if the client is SSL, it seems that they each
3562 wait for each other, leading to a delay before one of them times out.
3563
356434: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3565 maintained 0.8.x compatibility because I don't think many are using it, and
3566 it is clearly obsolete.
3567
356835. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3569 transport.