Change dovecot authenticator to use read/write instead of fgets/fprint
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57c2c631 1$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.487 2007/03/01 14:06:56 ph10 Exp $
495ae4b0
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2
3Change log file for Exim from version 4.21
4-------------------------------------------
5
b4ed4da0
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6Exim version 4.67
7-----------------
8
22ad45c9
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9MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
10 is unset (happens when testing with -bh and -oMi isn't used). Thanks to
11 Jan Srzednicki.
12
b4ed4da0
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13PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
14 issue a MAIL command.
15
431b7361
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16PH/02 In an ACL statement such as
17
18 deny dnslists = X!=127.0.0.2 : X=127.0.0.2
19
20 if a client was not listed at all, or was listed with a value other than
21 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
22 the condition was not true (as it should be), so access was not denied.
23 The bug was that the ! inversion was incorrectly passed on to the second
24 item. This has been fixed.
25
26PH/03 Added additional dnslists conditions == and =& which are different from
27 = and & when the dns lookup returns more than one IP address.
28
83da1223
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29PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
30 cipher suites used by GnuTLS. These options are ignored by OpenSSL.
31
54fc8428
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32PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
33 FSYNC, which compiles an option called disable_fsync that allows for
34 bypassing fsync(). The documentation is heavily laced with warnings.
35
34c5e8dd
SC
36SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
37
bbe15da8
PH
38PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
39 with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
40 to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
41 including adding "make clean"; (3) Added -fPIC when compiling the test
42 dynamically loaded module, to get rid of a warning.
43
0e8a9471
MH
44MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
45 message fails, move_frozen_messages = true and ignore_bounce_errors_after
46 = 0s. The bug is otherwise harmless.
47
f0872424
PH
48PH/07 There was a bug in the dovecot authenticator such that the value of
49 $auth1 could be overwritten, and so not correctly preserved, after a
50 successful authentication. This usually meant that the value preserved by
51 the server_setid option was incorrect.
52
b01dd148
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53PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
54
6bf342e1
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55PH/09 Installed PCRE release 7.0.
56
273f34d0
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57PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
58 run for batched SMTP input. It is now run at the start of every message
59 in the batch. While fixing this I discovered that the process information
60 (output by running exiwhat) was not always getting set for -bs and -bS
61 input. This is fixed, and it now also says "batched" for BSMTP.
62
cf8b11a5
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63PH/11 Added control=no_pipelining.
64
41c7c167
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65PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
66 patch, slightly modified), and move the expansion of helo_data till after
67 the connection is made in the smtp transport (so it can use these
68 values).
69
9c57cbc0
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70PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
71
f3f065bb
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72PH/14 Added log_selector = +pid.
73
047bdd8c
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74PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
75
0ce9abe6
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76PH/16 Add ${if forany and ${if forall.
77
0e22dfd1
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78PH/17 Added dsn_from option to vary the From: line in DSNs.
79
4c590bd1
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80PH/18 Flush SMTP output before performing a callout, unless control =
81 no_callout_flush is set.
82
09945f1e
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83PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
84 was true (the default) a successful delivery failed to delete the retry
85 item, thus causing premature timeout of the address. The bug is now
86 fixed.
87
c51b8e75
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88PH/20 Added hosts_avoid_pipelining to the smtp transport.
89
e28326d8
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90PH/21 Long custom messages for fakedefer and fakereject are now split up
91 into multiline reponses in the same way that messages for "deny" and
92 other ACL rejections are.
93
75b1493f
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94PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
95 with slight modification.
96
7c5214ec
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97PH/23 Applied sieve patches from the maintainer "tracking the latest notify
98 draft, changing the syntax and factoring some duplicate code".
99
4311097e
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100PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
101 for deliveries of the second and subsequent messages over the same SMTP
102 connection.
103
29f89cad
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104PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
105 ${reduce, with only minor "tidies".
106
5e687460
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107SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
108
c3611384
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109PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
110 expansion side effects.
111
5a11a7b4
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112PH/27 When a message times out after an over-quota error from an Exim-imposed
113 quota, the bounce message says "mailbox is full". This message was not
114 being given when it was a system quota that was exceeded. It now should
115 be the same.
116
0e20aff9
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117MH/03 Made $recipients available in local_scan(). local_scan() already has
118 better access to the recipient list through recipients_list[], but
119 $recipients can be useful in postmaster-provided expansion strings.
120
ca86f471
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121PH/28 The $smtp_command and $smtp_command_argument variables were not correct
122 in the case of a MAIL command with additional options following the
123 address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
124 were accidentally chopped off.
125
a14e5636
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126PH/29 SMTP synchronization checks are implemented when a command is read -
127 there is a check that no more input is waiting when there shouldn't be
128 any. However, for some commands, a delay in an ACL can mean that it is
129 some time before the response is written. In this time, more input might
130 arrive, invalidly. So now there are extra checks after an ACL has run for
131 HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
132 pipelining has not been advertised.
133
ec95d1a6
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134PH/30 MH's patch to allow iscntrl() characters to be list separators.
135
42855d71
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136PH/31 Unlike :fail:, a custom message specified with :defer: was not being
137 returned in the SMTP response when smtp_return_error_details was false.
138 This has been fixed.
139
57c2c631
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140PH/32 Change the Dovecot authenticator to use read() and write() on the socket
141 instead of the C I/O that was originally supplied, because problems were
142 reported on Solaris.
143
b4ed4da0 144
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145Exim version 4.66
146-----------------
147
148PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
149 fixed by 4.65/MH/01 (is this a record?) are fixed:
150
151 (i) An empty string was always treated as zero by the numeric comparison
152 operators. This behaviour has been restored.
153
154 (ii) It is documented that the numeric comparison operators always treat
155 their arguments as decimal numbers. This was broken in that numbers
156 starting with 0 were being interpreted as octal.
157
158 While fixing these problems I realized that there was another issue that
159 hadn't been noticed. Values of message_size_limit (both the global option
160 and the transport option) were treated as octal if they started with 0.
161 The documentation was vague. These values are now always treated as
162 decimal, and I will make that clear in the documentation.
163
164
93cfa765
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165Exim version 4.65
166-----------------
167
168TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
169 Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
170 versions. (#438)
171
d6066548
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172MH/01 Don't check that the operands of numeric comparison operators are
173 integers when their expansion is in "skipping" mode (fixes bug
174 introduced by 4.64-PH/07).
175
4362ff0d
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176PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
177 child addresses, Exim now panics and dies. Previously, because the count
178 is held in a short int, deliveries were likely to be lost. As such a
179 large number of recipients for a single message is ridiculous
180 (performance will be very, very poor), I have chosen to impose a limit
181 rather than extend the field.
182
93cfa765 183
944e9e9c
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184Exim version 4.64
185-----------------
aa41d2de 186
21d74bd9
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187TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
188 leftover -K file (the existence of which was triggered by #402).
189 While we were at it, introduced process PID as part of the -K
190 filename. This should rule out race conditions when creating
191 these files.
192
193TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
194 processing considerably. Previous code took too long for large mails,
195 triggering a timeout which in turn triggers #401.
196
197TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
198 in the DK code in transports.c. sendfile() is not really portable,
199 hence the _LINUX specificness.
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200
201TF/01 In the add_headers option to the mail command in an Exim filter,
202 there was a bug that Exim would claim a syntax error in any
203 header after the first one which had an odd number of characters
204 in the field name.
205
2b1c6e3a
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206PH/01 If a server that rejects MAIL FROM:<> was the target of a sender
207 callout verification, Exim cached a "reject" for the entire domain. This
208 is correct for most verifications, but it is not correct for a recipient
209 verification with use_sender or use_postmaster set, because in that case
210 the callout does not use MAIL FROM:<>. Exim now distinguishes the special
211 case of MAIL FROM:<> rejection from other early rejections (e.g.
212 rejection of HELO). When verifying a recipient using a non-null MAIL
213 address, the cache is ignored if it shows MAIL FROM:<> rejection.
214 Whatever the result of the callout, the value of the domain cache is
215 left unchanged (for any other kind of callout, getting as far as trying
216 RCPT means that the domain itself is ok).
217
1f872c80
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218PH/02 Tidied a number of unused variable and signed/unsigned warnings that
219 gcc 4.1.1 threw up.
220
221PH/03 On Solaris, an unexpectedly close socket (dropped connection) can
222 manifest itself as EPIPE rather than ECONNECT. When tidying away a
223 session, the daemon ignores ECONNECT errors and logs others; it now
224 ignores EPIPE as well.
225
d203e649
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226PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
227 (quoted-printable decoding).
228
cc2ed8f7 229PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
21a04aa3 230 later the small subsequent patch to fix an introduced bug.
f951fd57 231
ddfcd446
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232PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
233
d45b1de8
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234PH/07 There was no check for overflow in expansions such as ${if >{1}{4096M}}.
235
236PH/08 An error is now given if message_size_limit is specified negative.
237
38a0a95f 238PH/09 Applied and tidied up Jakob Hirsch's patch for allowing ACL variables
641cb756 239 to be given (somewhat) arbitrary names.
38a0a95f 240
a2405d83
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241JJ/01 exipick 20060919.0, allow for arbitrary acl_ variables introduced
242 in 4.64-PH/09.
243
244JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
245 miscellaneous code fixes
246
6ea85e9a
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247PH/10 Added the log_reject_target ACL modifier to specify where to log
248 rejections.
249
26da7e20
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250PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
251 hostname. This is wrong, because it relates to the incoming message (and
252 probably the interface on which it is arriving) and not to the outgoing
253 callout (which could be using a different interface). This has been
254 changed to use the value of the helo_data option from the smtp transport
255 instead - this is what is used when a message is actually being sent. If
256 there is no remote transport (possible with a router that sets up host
257 addresses), $smtp_active_hostname is used.
6ea85e9a 258
14aa5a05 259PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
7befa435 260 tweaks were necessary in order to get it to work (see also 21 below):
14aa5a05
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261 (a) The code assumed that strncpy() returns a negative number on buffer
262 overflow, which isn't the case. Replaced with Exim's string_format()
263 function.
264 (b) There were several signed/unsigned issues. I just did the minimum
265 hacking in of casts. There is scope for a larger refactoring.
266 (c) The code used strcasecmp() which is not a standard C function.
267 Replaced with Exim's strcmpic() function.
268 (d) The code set only $1; it now sets $auth1 as well.
269 (e) A simple test gave the error "authentication client didn't specify
270 service in request". It would seem that Dovecot has changed its
271 interface. Fortunately there's a specification; I followed it and
272 changed what the client sends and it appears to be working now.
273
ff75a1f7
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274PH/13 Added $message_headers_raw to provide the headers without RFC 2047
275 decoding.
276
e6f6568e
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277PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
278 address A is aliased to B and C, where B exists and C does not. Without
279 -v the output is "A verified" because verification stops after a
280 successful redirection if more than one address is generated. However,
281 with -v the child addresses are also verified. Exim was outputting "A
282 failed to verify" and then showing the successful verification for C,
283 with its parentage. It now outputs "B failed to verify", showing B's
284 parentage before showing the successful verification of C.
285
d6f6e0dc
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286PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
287 look up a TXT record in a specific list after matching in a combined
288 list.
289
322050c2
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290PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
291 RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
292 they consult the DNS. I had assumed they would set it the way they
293 wanted; and indeed my experiments on Linux seem to show that in some
294 cases they do (I could influence IPv6 lookups but not IPv4 lookups).
295 To be on the safe side, however, I have now made the interface to
296 host_find_byname() similar to host_find_bydns(), with an argument
297 containing the DNS resolver options. The host_find_byname() function now
298 sets these options at its start, just as host_find_bydns() does. The smtp
299 transport options dns_qualify_single and dns_search_parents are passed to
300 host_find_byname() when gethostbyname=TRUE in this transport. Other uses
301 of host_find_byname() use the default settings of RES_DEFNAMES
302 (qualify_single) but not RES_DNSRCH (search_parents).
303
08955dd3
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304PH/17 Applied (a modified version of) Nico Erfurth's patch to make
305 spool_read_header() do less string testing, by means of a preliminary
306 switch on the second character of optional "-foo" lines. (This is
307 overdue, caused by the large number of possibilities that now exist.
308 Originally there were few.) While I was there, I also converted the
309 str(n)cmp tests so they don't re-test the leading "-" and the first
310 character, in the hope this might squeeze out yet more improvement.
311
1eccaa59
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312PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
313 flag allowing group syntax was set by the header_syntax check but not
314 turned off, possible causing trouble later; (2) The flag was not being
315 set at all for the header_verify test, causing "group"-style headers to
316 be rejected. I have now set it in this case, and also caused header_
317 verify to ignore an empty address taken from a group. While doing this, I
318 came across some other cases where the code for allowing group syntax
319 while scanning a header line wasn't quite right (mostly, not resetting
320 the flag correctly in the right place). These bugs could have caused
321 trouble for malformed header lines. I hope it is now all correct.
322
602e59e5
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323PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
324 with the "reply" argument non-NULL. The code, however (which originally
325 came from elsewhere) had *some* tests for NULL when it wrote to *reply,
326 but it didn't always do it. This confused somebody who was copying the
327 code for some other use. I have removed all the tests.
328
411ef850
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329PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
330 feature that was used to support insecure browsers during the U.S. crypto
331 embargo. It requires special client support, and Exim is probably the
332 only MTA that supported it -- and would never use it because real RSA is
333 always available. This code has been removed, because it had the bad
334 effect of slowing Exim down by computing (never used) parameters for the
335 RSA_EXPORT functionality.
336
7befa435
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337PH/21 On the advice of Timo Sirainen, added a check to the dovecot
338 authenticator to fail if there's a tab character in the incoming data
339 (there should never be unless someone is messing about, as it's supposed
340 to be base64-encoded). Also added, on Timo's advice, the "secured" option
341 if the connection is using TLS or if the remote IP is the same as the
342 local IP, and the "valid-client-cert option" if a client certificate has
343 been verified.
344
48da4259 345PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
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346 authenticators. This can be used for authorization after authentication
347 succeeds. (In the case of plaintext, it servers for both authentication
348 and authorization.)
349
48da4259
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350PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
351 if any retry times were supplied.
352
d1d5595c
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353PH/24 Exim crashed if verify=helo was activated during an incoming -bs
354 connection, where there is no client IP address to check. In this
355 situation, the verify now always succeeds.
356
0ef732d9
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357PH/25 Applied John Jetmore's -Mset patch.
358
328895cc
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359PH/26 Added -bem to be like -Mset, but loading a message from a file.
360
fd700877
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361PH/27 In a string expansion for a processed (not raw) header when multiple
362 headers of the same name were present, leading whitespace was being
363 removed from all of them, but trailing whitespace was being removed only
364 from the last one. Now trailing whitespace is removed from each header
f6c332bd
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365 before concatenation. Completely empty headers in a concatenation (as
366 before) are ignored.
fd700877 367
8dce1a6f
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368PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
369 Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
370
17af4a17
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371PH/29 [Removed. This was a change that I later backed out, and forgot to
372 correct the ChangeLog entry (that I had efficiently created) before
373 committing the later change.]
f6c332bd
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374
375PH/30 Exim was sometimes attempting to deliver messages that had suffered
376 address errors (4xx response to RCPT) over the same connection as other
377 messages routed to the same hosts. Such deliveries are always "forced",
378 so retry times are not inspected. This resulted in far too many retries
379 for the affected addresses. The effect occurred only when there were more
380 hosts than the hosts_max_try setting in the smtp transport when it had
381 the 4xx errors. Those hosts that it had tried were not added to the list
382 of hosts for which the message was waiting, so if all were tried, there
383 was no problem. Two fixes have been applied:
384
385 (i) If there are any address or message errors in an SMTP delivery, none
386 of the hosts (tried or untried) are now added to the list of hosts
387 for which the message is waiting, so the message should not be a
388 candidate for sending over the same connection that was used for a
389 successful delivery of some other message. This seems entirely
390 reasonable: after all the message is NOT "waiting for some host".
391 This is so "obvious" that I'm not sure why it wasn't done
392 previously. Hope I haven't missed anything, but it can't do any
393 harm, as the worst effect is to miss an optimization.
394
395 (ii) If, despite (i), such a delivery is accidentally attempted, the
396 routing retry time is respected, so at least it doesn't keep
397 hammering the server.
398
c1114884
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399PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
400 in ${readsocket because some servers need this prod.
401
7a0743eb
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402PH/32 Added some extra debug output when updating a wait-xxx database.
403
0d85fa3f
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404PH/33 The hint "could be header name not terminated by colon", which has been
405 given for certain expansion errors for a long time, was not being given
406 for the ${if def:h_colon_omitted{... case.
407
1bf43b78
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408PH/34 The spec says: "With one important exception, whenever a domain list is
409 being scanned, $domain contains the subject domain." There was at least
410 one case where this was not true.
411
520de300
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412PH/35 The error "getsockname() failed: connection reset by peer" was being
413 written to the panic log as well as the main log, but it isn't really
414 panic-worthy as it just means the connection died rather early on. I have
415 removed the panic log writing for the ECONNRESET error when getsockname()
416 fails.
417
48c7f9e2
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418PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
419 runs only) independently of the message's sender address. This meant
420 that, if the 4xx error was in fact related to the sender, a different
421 message to the same recipient with a different sender could confuse
422 things. In particualar, this can happen when sending to a greylisting
423 server, but other circumstances could also provoke similar problems.
424 I have changed the default so that the retry time for these errors is now
425 based a combination of the sender and recipient addresses. This change
426 can be overridden by setting address_retry_include_sender=false in the
427 smtp transport.
428
99ea1c86
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429PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
430 remote server are returned as part of bounce messages. This was not
431 happening for LMTP over a pipe (the lmtp transport), but now it is the
432 same for both kinds of LMTP.
433
a2042e78
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434PH/38 Despite being documented as not happening, Exim was rewriting addresses
435 in header lines that were in fact CNAMEs. This is no longer the case.
436
4fbcfc2e
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437PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
438 and queue runs started by the daemon processed all messages. This has
439 been fixed so that -R and -S can now usefully be given with -q<time>.
440
aa41d2de
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441PH/40 Import PCRE release 6.7 (fixes some bugs).
442
af561417
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443PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
444
3cc66b45
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445PH/42 Give an error if -q is specified more than once.
446
194cc0e4
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447PH/43 Renamed the variables $interface_address and $interface_port as
448 $received_ip_address and $received_port, to make it clear that these
449 values apply to message reception, and not to the outgoing interface when
450 a message is delivered. (The old names remain recognized, of course.)
451
a401ddaa
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452PH/44 There was no timeout on the connect() call when using a Unix domain
453 socket in the ${readsocket expansion. There now is.
454
4e88a19f
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455PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
456 be meaningful with "accept".
457
d7d7b289
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458SC/01 Eximstats V1.43
459 Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
460
461SC/02 Eximstats V1.44
462 Use a glob alias rather than an array ref in the generated
463 parser. This improves both readability and performance.
464
465SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
466 Collect SpamAssassin and rejection statistics.
467 Don't display local sender or destination tables unless
468 there is data to show.
469 Added average volumes into the top table text output.
470
471SC/04 Eximstats V1.46
472 Collect data on the number of addresses (recipients)
473 as well as the number of messages.
474
475SC/05 Eximstats V1.47
476 Added 'Message too big' to the list of mail rejection
477 reasons (thanks to Marco Gaiarin).
478
479SC/06 Eximstats V1.48
480 Mainlog lines which have GMT offsets and are too short to
481 have a flag are now skipped.
482
483SC/07 Eximstats V1.49 (Alain Williams)
484 Added the -emptyok flag.
485
486SC/08 Eximstats V1.50
487 Fixes for obtaining the IP address from reject messages.
488
0ea2a468
JJ
489JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
490 (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
491 whitesspace changes from 4.64-PH/27
492
493JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
494 match 4.64-PH/13
495
496JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
497 are found, allow negative numbers in numeric criteria)
498
499JJ/06 exipick.20061117.2, added new $message_body_missing variable
500
501JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
502 to match changes made in 4.64-PH/43
503
8a10f5a4
PH
504PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
505
30e18802
PH
506PH/47 Put in an explicit test for a DNS lookup of an address record where the
507 "domain" is actually an IP address, and force a failure. This locks out
508 those revolvers/nameservers that support "A-for-A" lookups, in
509 contravention of the specifications.
510
55728a4f
PH
511PH/48 When a host name was looked up from an IP address, and the subsequent
512 forward lookup of the name timed out, the host name was left in
513 $sender_host_name, contrary to the specification.
d7d7b289 514
d7837193
PH
515PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
516 restricted to single-key lookups, Exim was not diagnosing an error if
517 * or *@ was used with a query-style lookup.
518
87054a31
PH
519PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
520
ea2c01d2
MH
521MH/01 local_scan ABI version incremented to 1.1. It should have been updated
522 long ago, but noone interested enough thought of it. Let's just say that
523 the "1.1" means that there are some new functions that weren't there at
524 some point in the past.
525
e4fa6968
PH
526PH/51 Error processing for expansion failure of helo_data from an smtp
527 transport during callout processing was broken.
528
56f5d9bd
PH
529PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
530 tested/used via the -bh/-bhc/-bs options.
531
922e1c28
PH
532PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
533 bug, fixed in subsequent PCRE releases).
534
21eb6e72
PH
535PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
536 arises when using the Solaris LDAP libraries (but not with OpenLDAP).
537
a0540757
PH
538PH/55 Check for a ridiculously long file name in exim_dbmbuild.
539
944e9e9c 540
478be7b0
SC
541Exim version 4.63
542-----------------
543
544SC/01 Use a glob alias rather than an array ref in eximstats generated
545 parser. This improves both readability and performance.
546
547SC/02 Collect SpamAssassin and rejection statistics in eximstats.
548 Don't display local sender or destination tables in eximstats unless
549 there is data to show.
550 Added average volumes into the eximstats top table text output.
551
552SC/03 Collect data on the number of addresses (recipients) as well
553 as the number of messages in eximstats.
554
2b965a65
TF
555TF/01 Correct an error in the documentation for the redirect router. Exim
556 does (usually) call initgroups() when daemonizing.
478be7b0 557
45b91596
PH
558TF/02 Call initgroups() when dropping privilege in exim.c, so that Exim runs
559 with consistent privilege compared to when running as a daemon.
478be7b0 560
c59f5781
TF
561TF/03 Note in the spec that $authenticated_id is not set for local
562 submissions from trusted users.
563
90fc3069
TF
564TF/04 The ratelimit per_rcpt option now works correctly in acl_not_smtp.
565 Thanks to Dean Brooks <dean@iglou.com> for the patch.
566
6083aca0
TF
567TF/05 Make it easier to get SMTP authentication and TLS/SSL support working
568 by adding some example configuration directives to the default
569 configuration file. A little bit of work is required to uncomment the
570 directives and define how usernames and passwords are checked, but
571 there is now a framework to start from.
572
765b530f
PH
573PH/01 Added #define LDAP_DEPRECATED 1 to ldap.c because some of the "old"
574 functions that Exim currently uses aren't defined in ldap.h for OpenLDAP
575 without this. I don't know how relevant this is to other LDAP libraries.
576
4e167a8c
PH
577PH/02 Add the verb name to the "unknown ACL verb" error.
578
4608d683
PH
579PH/03 Magnus Holmgren's patch for filter_prepend_home.
580
b8dc3e4a
PH
581PH/03 Fixed Bugzilla #101: macro definition between ACLs doesn't work.
582
5418e93b
PH
583PH/04 Applied Magnus Holmgren's patch to fix Bugzilla #98: transport's home
584 directory not expanded when it should be if an expanded home directory
585 was set for the address (which is overridden by the transport).
586
b4a9bda2
PH
587PH/05 Applied Alex Kiernan's patch to fix Bugzilla #99: a problem with
588 libradius.
589
45b91596
PH
590PH/06 Added acl_not_smtp_start, based on Johannes Berg's patch, and set the
591 bit to forbid control=suppress_local_fixups in the acl_not_smtp ACL,
592 because it is too late at that time, and has no effect.
593
5547e2c5
PH
594PH/07 Changed ${quote_pgsql to quote ' as '' instead of \' because of a
595 security issue with \' (bugzilla #107). I could not use the
596 PQescapeStringConn() function, because it needs a PGconn value as one of
597 its arguments.
598
dbcef0ea
PH
599PH/08 When testing addresses using -bt, indicate those final addresses that
600 are duplicates that would not cause an additional delivery. At least one
601 person was confused, thinking that -bt output corresponded to deliveries.
602 (Suppressing duplicates isn't a good idea as you lose the information
603 about possibly different redirections that led to the duplicates.)
604
25257489
PH
605PH/09 Applied patch from Erik to use select() instead of poll() in spam.c on
606 systems where poll() doesn't work, in particular OS X.
607
c816d124
PH
608PH/10 Added more information to debugging output for retry time not reached.
609
a9ccd69a
PH
610PH/11 Applied patch from Arkadiusz Miskiewicz to apply a timeout to read
611 operations in malware.c.
612
75fa1910
PH
613PH/12 Applied patch from Magnus Holmgren to include the "h" tag in Domain Keys
614 signatures.
615
a7d7aa58
PH
616PH/13 If write_rejectlog was set false when logging was sent to syslog with
617 syslog_duplication set false, log lines that would normally be written
618 both the the main log and to the reject log were not written to syslog at
619 all.
620
42119b09
PH
621PH/14 In the default configuration, change the use of "message" in ACL warn
622 statements to "add_header".
623
41609df5
PH
624PH/15 Diagnose a filter syntax error for "seen", "unseen", or "noerror" if not
625 not followed by a command (e.g. "seen endif").
626
a5bd321b
PH
627PH/16 Recognize SMTP codes at the start of "message" in ACLs and after :fail:
628 and :defer: in a redirect router. Add forbid_smtp_code to suppress the
629 latter.
630
e85a7ad5 631PH/17 Added extra conditions to the default value of delay_warning_condition
5dff5817
PH
632 so that it is now:
633
e85a7ad5
PH
634 ${if or { \
635 { !eq{$h_list-id:$h_list-post:$h_list-subscribe:}{} } \
636 { match{$h_precedence:}{(?i)bulk|list|junk} } \
637 { match{$h_auto-submitted:}{(?i)auto-generated|auto-replied} } \
5dff5817
PH
638 }{no}{yes}}
639
e85a7ad5
PH
640 The Auto-Submitted: and various List- headers are standardised, whereas I
641 don't think Precedence: ever was.
5dff5817 642
d8fe1c03
PH
643PH/18 Refactored debugging code in route_finduser() to show more information,
644 in particular, the error code if getpwnam() issues one.
645
16282d2b
PH
646PH/19 Added PQsetClientEncoding(conn, "SQL_ASCII") to the pgsql code module.
647 This is apparently needed in addition to the PH/07 change above to avoid
648 any possible encoding problems.
649
35d40a98
PH
650PH/20 Perl can change the locale. Exim was resetting it after a ${perl call,
651 but not after initializing Perl.
652
034d99ab
PH
653PH/21 Added a call to PQsetNoticeProcessor() to catch pgsql "notices" and
654 output them only if debugging. By default they are written stderr,
655 apparently, which is not desirable.
656
6ec97b1b
PH
657PH/22 Added Alain Williams' LDAP patch to support setting REFERRALS=off on
658 queries.
659
e22ca4ac
JJ
660JJ/01 exipick: added --reverse (and -R synonym), --random, --size, --sort and
661 --not options
662
663JJ/02 exipick: rewrote --help documentation to hopefully make more clear.
664
33d73e3b
PH
665PH/23 Made -oMaa and -oMt work with -bh and -bs to pretend the connection is
666 authenticated or an ident call has been made. Suppress the default
667 values for $authenticated_id and $authenticated_sender (but permit -oMai
668 and -oMas) when testing with -bh.
669
9ecb03f3
PH
670PH/24 Re-jigged the order of the tests in the default configuration so that the
671 tests for valid domains and recipients precede the DNS black list and CSA
672 tests, on the grounds that those ones are more expensive.
673
084efe8d
PH
674PH/25 Exim was not testing for a space following SMTP commands such as EHLO
675 that require one. Thus, EHLORHUBARB was interpreted as a valid command.
676 This bug exists in every version of Exim that I still have, right back to
677 0.12.
678
366fc9f0
PH
679PH/26 (n)wildlsearch lookups are documented as being done case-insensitively.
680 However, an attempt to turn on case-sensitivity in a regex key by
681 including (?-i) didn't work because the subject string was already
682 lowercased, and the effects were non-intuitive. It turns out that a
683 one-line patch can be used to allow (?-i) to work as expected.
684
c59f5781 685
c887c79e
TF
686Exim version 4.62
687-----------------
688
689TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst
690 other effects) broke the use of negated acl sub-conditions.
691
1cce3af8
PH
692PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore
693 patch).
694
afb3eaaf
PH
695PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow".
696 "Deny" causes Exim to reject the incoming connection with a 554 error.
697 Unfortunately, if there is a major crisis, such as a disk failure,
698 tcp-wrappers gives "deny", whereas what one would like would be some
699 kind of temporary error. A kludge has been added to help with this.
700 Before calling hosts_ctl(), errno is set zero. If the result is "deny", a
701 554 error is used if errno is still zero or contains ENOENT (which occurs
702 if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a
703 451 error is used.
704
e173618b
PH
705PH/03 Add -lutil to the default FreeBSD LIBS setting.
706
dd16e114
PH
707PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host
708 errors. Otherwise a message that provokes a temporary error (when other
709 messages do not) can cause a whole host to time out.
710
f7fd3850
PH
711PH/05 Batch deliveries by appendfile and pipe transports did not work when the
712 addresses were routed directly to files or pipes from a redirect router.
713 File deliveries just didn't batch; pipe deliveries might have suffered
714 odd errors.
715
d87df92c
PH
716PH/06 A failure to get a lock for a hints database would erroneously always say
717 "Failed to get write lock", even when it was really a read lock.
718
7e9f683d
PH
719PH/07 The appendfile transport was creating MBX lock files with a fixed mode
720 of 0600. This has been changed to use the value of the lockfile_mode
721 option (which defaults to 0600).
722
bfad5236
PH
723PH/08 Applied small patch from the Sieve maintainer.
724
01c490df
PH
725PH/09 If maildir_quota_directory_regex was set to exclude (say) the .Trash
726 folder from quota calculations, a direct delivery into this folder messed
727 up the contents of the maildirsize file. This was because the regex was
728 used only to exclude .Trash (or whatever) when the size of the mailbox
729 was calculated. There was no check that a delivery was happening into an
730 excluded directory. This bug has been fixed by ignoring all quota
731 processing for deliveries into excluded directories.
732
d6629cdc
PH
733PH/10 Added the maildirfolder_create_regex option to appendfile.
734
1cce3af8 735
214e2000
PH
736Exim version 4.61
737-----------------
738
739PH/01 The code for finding all the local interface addresses on a FreeBSD
740 system running IPv6 was broken. This may well have applied to all BSD
741 systems, as well as to others that have similar system calls. The broken
742 code found IPv4 interfaces correctly, but gave incorrect values for the
743 IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
744 that it would not match correctly against @[] and not recognize the IPv6
745 addresses as local.
746
f9daeae0
PH
747PH/02 The ipliteral router was not recognizing addresses of the form user@
748 [ipv6:....] because it didn't know about the "ipv6:" prefix.
749
7e66e54d
PH
750PH/03 Added disable_ipv6.
751
c8ea1597
PH
752PH/04 Changed $reply_address to use the raw form of the headers instead of the
753 decoded form, because it is most often used to construct To: headers
754 lines in autoreplies, and the decoded form may well be syntactically
755 invalid. However, $reply_address has leading white space removed, and all
756 newlines turned into spaces so that the autoreply transport does not
757 grumble.
758
911f6fde
PH
759PH/05 If group was specified without a user on a router, and no group or user
760 was specified on a transport, the group from the router was ignored.
761
47ca6d6c
PH
762PH/06 Increased the number of ACL variables to 20 of each type, and arranged
763 for visible compile-time settings that can be used to change these
764 numbers, for those that want even more. Backwards compatibility with old
765 spool files has been maintained. However, going back to a previous Exim
766 release will lost any variables that are in spool files.
767
ed0e9820
PH
768PH/07 Two small changes when running in the test harness: increase delay when
769 passing a TCP/IP connection to a new process, in case the original
770 process has to generate a bounce, and remove special handling of
771 127.0.0.2 (sic), which is no longer necessary.
772
eff37e47
PH
773PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
774 be the same on different OS.
775
1921d2ea
PH
776PH/09 Moved a debug statement in filter processing to avoid a race problem when
777 testing.
778
b3f69ca8
JJ
779JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
780 whether --show-vars was specified or not
781
782JJ/02 exipick: Added support for new ACL variable spool format introduced
783 in 4.61-PH/06
784
424a1c63
PH
785PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
786 syntactically invalid From: or Reply-to: line, and a filter used this to
787 generate an autoreply, and therefore failed to obtain an address for the
788 autoreply, Exim could try to deliver to a non-existent relative file
789 name, causing unrelated and misleading errors. What now happens is that
790 it logs this as a hard delivery error, but does not attempt to create a
791 bounce message.
792
7a100415
PH
793PH/11 The exinext utility has a -C option for testing purposes, but although
794 the given file was scanned by exinext itself; it wasn't being passed on
795 when Exim was called.
796
19b9dc85
PH
797PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
798 an end-of-file indication when reading a command response.
799
309bd837
PH
800PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
801 compiled. In many other places in Exim, IPv6 addresses are always
802 recognized, so I have changed this. It also means that IPv4 domain
803 literals of the form [IPV4:n.n.n.n] are now always recognized.
804
59e82a2a
PH
805PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
806 used if the router is not running as root, for example, when verifying at
807 ACL time, or when using -bh. The debugging output from this situation was
808 non-existent - all you got was a failure to exec. I have made two
809 changes:
810
811 (a) Failures to set uid/gid, the current directory, or a process leader
812 in a subprocess such as that created by queryprogram now generate
813 suitable debugging ouput when -d is set.
814
815 (b) The queryprogram router detects when it is not running as root,
816 outputs suitable debugging information if -d is set, and then runs
817 the subprocess without attempting to change uid/gid.
818
9edc04ce
PH
819PH/15 Minor change to Makefile for building test_host (undocumented testing
820 feature).
821
1349e1e5
PH
822PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
823 additional section of a DNS packet that returns MX or SRV records.
824 Instead, it always explicitly searches for A/AAAA records. This avoids
825 major problems that occur when a DNS server includes only records of one
826 type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
827 fixed another bug: if SRV records were looked up and the corresponding
828 address records were *not* found in the additional section, the port
829 values from the SRV records were lost.
830
ea49d0e1
PH
831PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not
832 using the correct key (the original address) when searching the retry
833 rules in order to find which one to use for generating the retry hint.
834
064a94c9
PH
835PH/18 If quota_warn_message contains a From: header, Exim now refrains from
836 adding the default one. Similarly, if it contains a Reply-To: header, the
837 errors_reply_to option, if set, is not used.
838
727071f8
PH
839PH/19 When calculating a retry time, Exim used to measure the "time since
840 failure" by looking at the "first failed" field in the retry record. Now
841 it does not use this if it is later than than the arrival time of the
842 message. Instead it uses the arrival time. This makes for better
843 behaviour in cases where some deliveries succeed, thus re-setting the
844 "first failed" field. An example is a quota failure for a huge message
845 when small messages continue to be delivered. Without this change, the
846 "time since failure" will always be short, possible causing more frequent
847 delivery attempts for the huge message than are intended.
dd16e114 848 [Note: This change was subsequently modified - see PH/04 for 4.62.]
727071f8 849
f78eb7c6
PH
850PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as
851 $1, $2, $3) because the numerical variables can be reset during some
852 expansion items (e.g. "match"), thereby losing the authentication data.
853
21c28500
PH
854PH/21 Make -bV show the size of off_t variables so that the test suite can
855 decide whether to run tests for quotas > 2G.
856
857PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold,
858 mailbox_size, and mailbox_filecount in the appendfile transport. If a
859 filecount value is greater than 2G or if a quota value is greater than 2G
860 on a system where the size of off_t is not greater than 4, a panic error
861 is given.
862
1688f43b
PH
863PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can
864 never match. The debug and -bh output now contains an explicit error
865 message indicating a malformed IPv4 address or mask.
866
867PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address
868 1.2.3.4 without a mask. Now it is not recognized as an IP address, and
869 PH/23 above applies.
870
9675b384
PH
871PH/25 Do not write to syslog when running in the test harness. The only
872 occasion when this arises is a failure to open the main or panic logs
873 (for which there is an explicit test).
874
6a3f1455
PH
875PH/26 Added the /no_tell option to "control=freeze".
876
dac79d3e
PH
877PH/27 If a host name lookup failed very early in a connection, for example, if
878 the IP address matched host_lookup and the reverse lookup yielded a name
879 that did not have a forward lookup, an error message of the form "no IP
880 address found for host xxx.xxx.xxx (during SMTP connection from NULL)"
881 could be logged. Now it outputs the IP address instead of "NULL".
1349e1e5 882
5977a0b3
PH
883PH/28 An enabling patch from MH: add new function child_open_exim2() which
884 allows the sender and the authenticated sender to be set when
885 submitting a message from within Exim. Since child_open_exim() is
886 documented for local_scan(), the new function should be too.
887
c91535f3
PH
888PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being
889 ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that
890 results in an empty string is now treated as unset.
891
0d46a8c8
PH
892PH/30 Fix eximon buffer overflow bug (Bugzilla #73).
893
278c6e6c
PH
894PH/31 Added sender_verify_fail logging option.
895
2cbb4081
PH
896PH/32 In November 2003, the code in Exim that added an empty Bcc: header when
897 needed by RFC 822 but not by RFC 2822 was commented out. I have now
898 tidied the source and removed it altogether.
899
3eef829e
PH
900PH/33 When a queue run was abandoned because the load average was too high, a
901 log line was always written; now it is written only if the queue_run log
902 selector is set. In addition, the log line for abandonment now contains
903 information about the queue run such as the pid. This is always present
904 in "start" and "stop" lines but was omitted from the "abandon" line.
905
1ab95fa6
PH
906PH/34 Omit spaces between a header name and the colon in the error message that
907 is given when verify = headers_syntax fails (if there are lots of them,
908 the message gets confusing).
909
230205fc
PH
910PH/35 Change the default for dns_check_names_pattern to allow slashes within
911 names, as there are now some PTR records that contain slashes. This check
912 is only to protect against broken name servers that fall over on strange
913 characters, so the fact that it applies to all lookups doesn't matter.
914
75e0e026
PH
915PH/36 Now that the new test suite is complete, we can remove some of the
916 special code in Exim that was needed for the old test suite. For example,
917 sorting DNS records because real resolvers return them in an arbitrary
918 order. The new test suite's fake resolver always returns records in the
919 same order.
920
921PH/37 When running in the test harness, use -odi for submitted messages (e.g.
922 bounces) except when queue_only is set, to avoid logging races between
923 the different processes.
924
145396a6
PH
925PH/38 Panic-die if .include specifies a non-absolute path.
926
3cd34f13
PH
927PH/39 A tweak to the "H" retry rule from its user.
928
11121d3d
JJ
929JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified
930 a label. They prevented compilation on older perls.
931
932JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused
933 a warning to be raised on newish perls.
934
935JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages
936 on queue. Changes to match documented behaviour of showing count of
937 messages matching specified criteria.
938
8def5aaf
PH
939PH/40 Changed the default ident timeout from 30s to 5s.
940
929ba01c
PH
941PH/41 Added support for the use of login_cap features, on those BSD systems
942 that have them, for controlling the resources used by pipe deliveries.
943
2632889e
PH
944PH/42 The content-scanning code uses fopen() to create files in which to put
945 message data. Previously it was not paying any attention to the mode of
946 the files. Exim runs with umask(0) because the rest of the code creates
947 files with open(), and sets the required mode explicitly. Thus, these
948 files were ending up world-writeable. This was not a big issue, because,
949 being within the spool directory, they were not world-accessible. I have
950 created a function called modefopen, which takes an additional mode
951 argument. It sets umask(777), creates the file, chmods it to the required
952 mode, then resets the umask. All the relevant calls to fopen() in the
953 content scanning code have been changed to use this function.
954
944a9c55
PH
955PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset
956 to 24 hours. This avoids potential overflow problems when processing G
957 and H retry rules. I suspect nobody ever tinkers with this value.
958
4a23603b
PH
959PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile.
960
4730f942
PH
961PH/45 When the plaintext authenticator is running as a client, the server's
962 challenges are checked to ensure they are valid base64 strings. By
963 default, the authentication attempt is cancelled if an invalid string is
964 received. Setting client_ignore_invalid_base64 true ignores these errors.
965 The decoded challenge strings are now placed in $auth1, $auth2, etc. as
966 they are received. Thus, the responses can be made to depend on the
967 challenges. If an invalid string is ignored, an empty string is placed in
968 the variable.
969
30dba1e6
PH
970PH/46 Messages that are created by the autoreply transport now contains a
971 References: header, in accordance with RFCs 2822 and 3834.
972
382afc6b
PH
973PH/47 Added authenticated_sender_force to the smtp transport.
974
a86229cf
PH
975PH/48 The ${prvs expansion was broken on systems where time_t was long long.
976
50c99ba6
PH
977PH/49 Installed latest patch from the Sieve maintainer.
978
d35e429d
PH
979PH/50 When an Exim quota was set without a file count quota, and mailbox_size
980 was also set, the appendfile transport was unnecessarily scanning a
981 directory of message files (e.g. for maildir delivery) to find the count
982 of files (along with the size), even though it did not need this
983 information. It now does the scan only if it needs to find either the
984 size of the count of files.
985
f90d018c
PH
986PH/51 Added ${time_eval: to convert Exim time strings into seconds.
987
75def545
PH
988PH/52 Two bugs concerned with error handling when the smtp transport is
989 used in LMTP mode:
990
991 (i) Exim was not creating retry information for temporary errors given
992 for individual recipients after the DATA command when the smtp transport
993 was used in LMTP mode. This meant that they could be retried too
994 frequently, and not timed out correctly.
995
996 (ii) Exim was setting the flag that allows error details to be returned
997 for LMTP errors on RCPT commands, but not for LMTP errors for individual
998 recipients that were returned after the DATA command.
999
1000PH/53 This is related to PH/52, but is more general: for any failing address,
1001 when detailed error information was permitted to be returned to the
1002 sender, but the error was temporary, then after the final timeout, only
1003 "retry timeout exceeded" was returned. Now it returns the full error as
1004 well as "retry timeout exceeded".
1005
c46782ef
PH
1006PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that
1007 do this, and (what is worse) MTAs that accept it.
1008
71fafd95
PH
1009PH/55 Added the add_header modified to ACLs. The use of "message" with "warn"
1010 will now be deprecated.
1011
2c5db4fd
PH
1012PH/56 New os.c-cygwin from the Cygwin maintainer.
1013
9cf6b11a
JJ
1014JJ/06 exipick: added --unsorted option to allow unsorted output in all output
1015 formats (previously only available in exim formats via -bpr, -bpru,
1016 and -bpra. Now also available in native and exiqgrep formats)
1017
1018JJ/07 exipick: added --freeze and --thaw options to allow faster interaction
1019 with very large, slow to parse queues
1020
1021JJ/08 exipick: added ! as generic prefix to negate any criteria format
1022
1023JJ/09 exipick: miscellaneous performance enhancements (~24% improvements)
1024
898d150f
PH
1025PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing
1026 responses to authentication challenges, though it was showing the
1027 challenges; (ii) I've removed the CR characters from the debug output for
1028 SMTP output lines.
1029
46218253
PH
1030PH/58 Allow for the insertion of a newline as well as a space when a string
1031 is turned into more than one encoded-word during RFC 2047 encoding. The
1032 Sieve code now uses this.
1033
e97957bc
PH
1034PH/59 Added the following errors that can be detected in retry rules: mail_4xx,
1035 data_4xx, lost_connection, tls_required.
1036
81e509d7
PH
1037PH/60 When a VRFY deferred or FAILED, the log message rather than the user
1038 message was being sent as an SMTP response.
1039
3d240ff7
PH
1040PH/61 Add -l and -k options to exicyclog.
1041
b37c4101
PH
1042PH/62 When verifying, if an address was redirected to one new address, so that
1043 verification continued, and the new address failed or deferred after
1044 having set something in $address_data, the value of $address_data was not
1045 passed back to the ACL. This was different to the case when no
1046 redirection occurred. The value is now passed back in both cases.
1047
79378e0f
PH
1048PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to
1049 HAVE_SETCLASSRESOURCES because there are different APIs in use that all
1050 use login_cap.h, so on its own it isn't the distinguishing feature. The
1051 new name refers directly to the setclassresources() function.
1052
e49c7bb4
PH
1053PH/65 Added configuration files for NetBSD3.
1054
d114ec46
PH
1055PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11.
1056
f3d7df6c
PH
1057PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6
1058 is preferred over IPv4.
1059
715ab376
PH
1060PH/68 The bounce_return_message and bounce_return_body options were not being
1061 honoured for bounces generated during the reception of non-SMTP messages.
1062 In particular, this applied to messages rejected by the ACL. This bug has
1063 been fixed. However, if bounce_return_message is true and bounce_return_
1064 body is false, the headers that are returned for a non-SMTP message
1065 include only those that have been read before the error was detected.
1066 (In the case of an ACL rejection, they have all been read.)
1067
6b31b150
PH
1068PH/69 The HTML version of the specification is now built in a directory called
1069 spec_html instead of spec.html, because the latter looks like a path with
1070 a MIME-type, and this confuses some software.
1071
1072PH/70 Catch two compiler warnings in sieve.c.
1073
d515a917
PH
1074PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The
1075 function verify_get_ident() calls ip_connect() to connect a socket, but
1076 if the "connect()" function timed out, ip_connect() used to close the
1077 socket. However, verify_get_ident() also closes the socket later, and in
1078 between Exim writes to the log, which may get opened at this point. When
1079 the socket was closed in ip_connect(), the log could get the same file
1080 descriptor number as the socket. This naturally causes chaos. The fix is
1081 not to close the socket in ip_connect(); the socket should be closed by
1082 the function that creates it. There was only one place in the code where
1083 this was missing, in the iplookup router, which I don't think anybody now
1084 uses, but I've fixed it anyway.
1085
9b8fadde
PH
1086PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as
1087 well as to direct DNS lookups. Otherwise the handling of names in host
1088 lists is inconsistent and therefore confusing.
1089
214e2000 1090
5de37277
PH
1091Exim version 4.60
1092-----------------
1093
cc38ddbf
PH
1094PH/01 Two changes to the default runtime configuration:
1095
1096 (1) Move the checks for relay_from_hosts and authenticated clients from
1097 after to before the (commented out) DNS black list checks.
1098
1099 (2) Add control=submission to the relay_from_hosts and authenticated
1100 clients checks, on the grounds that messages accepted by these
1101 statements are most likely to be submissions.
5de37277 1102
72fdd6ae
PH
1103PH/02 Several tidies to the handling of ${prvs and ${prvscheck:
1104
1105 (1) Generate an error if the third argument for the ${prvs expansion is
1106 not a single digit.
1107
1108 (2) Treat a missing third argument of ${prvscheck as if it were an empty
1109 string.
1110
1111 (3) Reset the variables that are obtained from the first argument of
1112 ${prvscheck and used in the second argument before leaving the code,
1113 because their memory is reclaimed, so using them afterwards may do
1114 silly things.
1115
1116 (4) Tidy up the code for expanding the arguments of ${prvscheck one by
1117 one (it's much easier than Tom thought :-).
1118
1119 (5) Because of (4), we can now allow for the use of $prvscheck_result
1120 inside the third argument.
cb9328de 1121
cb741023
PH
1122PH/03 For some reason, the default setting of PATH when running a command from
1123 a pipe transport was just "/usr/bin". I have changed it to
1124 "/bin:/usr/bin".
1125
f174f16e
PH
1126PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause
1127 anything to be listed in the output from -bV.
b2f5a032 1128
c25242d7
PH
1129PH/05 When a filter generated an autoreply, the entire To: header line was
1130 quoted in the delivery log line, like this:
1131
1132 => >A.N.Other <ano@some.domain> <original@ddress> ...
1133
1134 This has been changed so that it extracts the operative address. There
1135 may be more than one such address. If so, they are comma-separated, like
1136 this:
1137
1138 => >ano@some.domain,ona@other.domain <original@ddress> ...
1139
82c19f95
PH
1140PH/06 When a client host used a correct literal IP address in a HELO or EHLO
1141 command, (for example, EHLO [1.2.3.4]) and the client's IP address was
1142 not being looked up in the rDNS to get a host name, Exim was showing the
1143 IP address twice in Received: lines, even though the IP addresses were
1144 identical. For example:
1145
1146 Received: from [1.2.3.4] (helo=[1.2.3.4])
1147
1148 However, if the real host name was known, it was omitting the HELO data
1149 if it matched the actual IP address. This has been tidied up so that it
1150 doesn't show the same IP address twice.
1151
d7ffbc12
PH
1152PH/07 When both +timestamp and +memory debugging was on, the value given by
1153 $tod_xxx expansions could be wrong, because the tod_stamp() function was
1154 called by the debug printing, thereby overwriting the timestamp buffer.
1155 Debugging no longer uses the tod_stamp() function when +timestamp is set.
1156
9f526266
PH
1157PH/08 When the original message was included in an autoreply transport, it
1158 always said "this is a copy of the message, including all the headers",
1159 even if body_only or headers_only was set. It now gives an appropriate
1160 message.
1161
87fcc8b9
PH
1162PH/09 Applied a patch from the Sieve maintainer which:
1163
1164 o fixes some comments
1165 o adds the (disabled) notify extension core
1166 o adds some debug output for the result of if/elsif tests
1167 o points to the current vacation draft in the documentation
1168 and documents the missing references header update
1169
1170 and most important:
1171
1172 o fixes a bug in processing the envelope test (when testing
1173 multiple envelope elements, the last element determinted the
1174 result)
1175
456682f5
PH
1176PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
1177 Electronic Mail") by including:
1178
1179 Auto-submitted: auto-generated
1180
1181 in the messages that it generates (bounce messages and others, such as
1182 warnings). In the case of bounce messages for non-SMTP mesages, there was
1183 also a typo: it was using "Auto_submitted" (underscore instead of
1184 hyphen). Since every message generated by Exim is necessarily in response
1185 to another message, thes have all been changed to:
1186
1187 Auto-Submitted: auto-replied
1188
1189 in accordance with these statements in the RFC:
1190
1191 The auto-replied keyword:
1192
1193 - SHOULD be used on messages sent in direct response to another
1194 message by an automatic process,
1195
1196 - MUST NOT be used on manually-generated messages,
1197
1198 - MAY be used on Delivery Status Notifications (DSNs) and Message
1199 Disposition Notifications (MDNs),
1200
1201 - MUST NOT be used on messages generated by automatic or periodic
1202 processes, except for messages which are automatic responses to
1203 other messages.
1204
3e46c1aa
PH
1205PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
1206 to the default Received: header definition.
456682f5 1207
49826d12
PH
1208PH/12 Added log selector acl_warn_skipped (default on).
1209
eba0c039
PH
1210PH/13 After a successful wildlsearch lookup, discard the values of numeric
1211 variables because (a) they are in the wrong storage pool and (b) even if
1212 they were copied, it wouldn't work properly because of the caching.
1213
a0d6ba8a
PH
1214PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
1215 checking when decoding. Apparently there are clients that generate
1216 overlong encoded strings. Why am I not surprised?
1217
f0917727
PH
1218PH/15 If the first argument of "${if match_address" was not empty, but did not
1219 contain an "@" character, Exim crashed. Now it writes a panic log message
1220 and treats the condition as false.
1221
096fee00
PH
1222PH/16 In autoreply, treat an empty string for "once" the same as unset.
1223
024bd3c2
PH
1224PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
1225 extension "envelope-auth". The code is finished and in agreement with
1226 other implementations, but there is no documentation so far and in fact,
1227 nobody wrote the draft yet. This extension is currently #undef'ed, thus
1228 not changing the active code.
1229
1230 Print executed "if" and "elsif" statements when debugging is used. This
1231 helps a great deal to understand what a filter does.
1232
1233 Document more things not specified clearly in RFC3028. I had all this
1234 sorted out, when out of a sudden new issues came to my mind. Oops."
1235
df199fec
PH
1236PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
1237 (Bugzilla #53).
1238
d27f1df3
PH
1239PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
1240 canonical form (as documented). However, after a host name lookup from
1241 the IP address, check_host() was doing a simple string comparison with
1242 addresses acquired from the DNS when checking that the found name did
1243 have the original IP as one of its addresses. Since any found IPv6
1244 addresses are likely to be in abbreviated form, the comparison could
1245 fail. Luckily, there already exists a function for doing the comparison
1246 by converting both addresses to binary, so now that is used instead of
1247 the text comparison.
1248
96776534
PH
1249PH/20 There was another similar case to PH/19, when a complete host name was
1250 given in a host list; looking up its IP address could give an abbreviated
1251 form, whereas the current host's name might or might not be abbreviated.
1252 The same fix has been applied.
1253
5de37277 1254
9a799bc0
PH
1255Exim version 4.54
1256-----------------
1257
1258PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was
1259 set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not.
1260 It now does.
1261
99a4b039
PH
1262PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on
1263 the CVS lines, and there was a missing #if HAVE_IPV6 in host.c.
1264
1265PH/03 Typo: missing ".o" in src/pcre/Makefile.
1266
4b233853
PH
1267PH/04 Tighten up "personal" tests: Instead of testing for any "List-"
1268 header line, restrict the check to what is listed in RFCs 2369 and 2929.
1269 Also, for "Auto-Submitted", treat anything other than "no" as
1270 non-personal, in accordance with RFC 3834. (Previously it treated
1271 anything starting "auto-" as non-personal.)
1272
8857ccfd
PH
1273TF/01 The control=submission/name=... option had a problem with syntax
1274 errors if the name included a slash character. The /name= option
1275 now slurps the rest of the string, so it can include any characters
1276 but it must come last in the list of options (after /sender_retain
1277 or /domain=).
1278
433a2980
PH
1279PH/05 Some modifications to the interface to the fake nameserver for the new
1280 testing suite.
1281
3e46c1aa 1282
9a799bc0 1283
e3a311ba
TK
1284Exim version 4.53
1285-----------------
1286
1287TK/01 Added the "success_on_redirect" address verification option. See
1288 NewStuff for rationale and an example.
1289
13b685f9
PH
1290PH/01 Added support for SQLite, basic code supplied by David Woodhouse.
1291
395ff96d
PH
1292PH/02 Patch to exigrep to allow it to work on syslog lines.
1293
5b68f6e4
PH
1294PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of
1295 fread() to skip over the body file's header line, because in Cygwin the
1296 header line is locked and is inaccessible.
1297
1ab52c69
PH
1298PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both
1299 co-exist for some time) to make it clear that it is the Exim ID that is
1300 referenced, not the Message-ID: header line.
1301
b07e6aa3
PH
1302PH/05 Replaced all Tom's calls to snprintf() with calls to the internal
1303 string_format() function, because snprintf() does not exist on all
1304 operating systems.
1305
254e032f
PH
1306PH/06 The use of forbid_filter_existstest now also locks out the use of the
1307 ${stat: expansion item.
1308
3af76a81
PH
1309PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP
1310 protocol synchronization error", to keep the pedants happy.
1311
2548ba04
PH
1312PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as
1313 well as for IRIX systems, when gcc is being used. See the host.c source
1314 file for comments.
1315
b6c6011d
PH
1316PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer.
1317
cf39cf57
PH
1318PH/10 Named domain lists were not working if used in a queue_smtp_domains
1319 setting.
1320
f1513293
PH
1321PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp
1322 transport and to the smtp transport in LMTP mode.
1323
727549a4
PH
1324TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway).
1325
af46795e
PH
1326PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to
1327 run a filter in a subprocess. This could lead to confusion in subsequent
1328 lookups in the parent process. There should also be a search_tidyup() at
1329 the end of the subprocess.
1330
d7b47fd0
PH
1331PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true
1332 only if the host matched helo_try_verify_hosts, which caused the
1333 verification to occur when the EHLO/HELO command was issued. The ACL just
1334 tested the remembered result. Now, if a previous verification attempt has
1335 not happened, "verify = helo" does it there and then.
1336
ee744174
JJ
1337JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04)
1338
b582ab87
PH
1339TK/03 Fix log output including CR from clamd.
1340
41a13e0a
PH
1341PH/14 A reference to $reply_address when Reply-to: was empty and From: did not
1342 exist provoked a memory error which could cause a segfault.
1343
f625cc5a
PH
1344PH/15 Installed PCRE 6.2
1345
1346PH/17 Defined BIND_8_COMPAT in the Darwin os.h file.
1347
21f7af35
PH
1348PH/18 Reversed 4.52/PH/17 because the HP-UX user found it wasn't the cause
1349 of the problem. Specifically, suggested +O2 rather than +O1 for the
1350 HP-UX compiler.
1351
31480e42
PH
1352PH/19 Added sqlite_lock_timeout option (David Woodhouse's patch).
1353
2d280592
PH
1354PH/20 If a delivery was routed to a non-standard port by means of an SRV
1355 record, the port was not correctly logged when the outgoing_port log
1356 selector was set (it logged the transort's default port).
1357
7cd1141b
PH
1358PH/21 Added support for host-specific ports to manualroute, queryprogram,
1359 fallback_hosts, and "hosts" in the smtp transport.
1360
1361PH/22 If the log selector "outgoing_port" is set, the port is now also given on
1362 host errors such as "Connection refused".
1363
750af86e
PH
1364PH/23 Applied a patch to fix problems with exim-4.52 while doing radius
1365 authentication with radiusclient 0.4.9:
1366
1367 - Error returned from rc_read_config was caught wrongly
1368 - Username/password not passed on to radius server due to wrong length.
1369
1370 The presumption is that some radiusclient API changes for 4.51/PH/17
1371 were not taken care of correctly. The code is still untested by me (my
1372 Linux distribution still has 0.3.2 of radiusclient), but it was
1373 contributed by a Radius user.
1374
1375PH/24 When doing a callout, the value of $domain wasn't set correctly when
1376 expanding the "port" option of the smtp transport.
1377
4304270b
TK
1378TK/04 MIME ACL: Fix buffer underrun that occurs when EOF condition is met
1379 while reading a MIME header. Thanks to Tom Hughes for a patch.
1380
750af86e
PH
1381PH/24 Include config.h inside local_scan.h so that configuration settings are
1382 available.
1383
64ffc24f
PH
1384PH/25 Make $smtp_command_argument available after all SMTP commands. This means
1385 that in an ACL for RCPT (for example), you can examine exactly what was
1386 received.
1387
5dd9625b
PH
1388PH/26 Exim was recognizing IPv6 addresses of the form [IPv6:....] in EHLO
1389 commands, but it was not correctly comparing the address with the actual
1390 client host address. Thus, it would show the EHLO address in Received:
1391 header lines when this was not necessary.
1392
5591031b
PH
1393PH/27 Added the % operator to ${eval:}.
1394
ba18e66a
PH
1395PH/28 Exim tries to create and chdir to its spool directory when it starts;
1396 it should be ignoring failures (because with -C, for example, it has lost
1397 privilege). It wasn't ignoring creation failures other than "already
1398 exists".
1399
9cec981f
PH
1400PH/29 Added "crypteq" to the list of supported features that Exim outputs when
1401 -bV or -d is used.
1402
aa2b5c79
PH
1403PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed
1404 because an input line was too long, either on its own, or by virtue of
1509d3a8
PH
1405 too many continuations, the temporary file was not being removed, and the
1406 return code was incorrect.
aa2b5c79 1407
48a53b7f
PH
1408PH/31 Missing "BOOL" in function definition in filtertest.c.
1409
1c59d63b
PH
1410PH/32 Applied Sieve patches from the maintainer.
1411
671012da
TK
1412TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67.
1413
1509d3a8
PH
1414PH/33 Added "verify = not_blind".
1415
1416PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in
1417 Local/Makefile (with some defaults set). These are used in built scripts
1418 such as exicyclog, but they have never been used in the exim_install
1419 script (though there are many overriding facilities there). I have
1420 arranged that the exim_install script now takes note of these two
1421 settings.
1422
1423PH/35 Installed configuration files for Dragonfly.
1424
2fe1a124
PH
1425PH/36 When a locally submitted message by a trusted user did not contain a
1426 From: header, and the sender address was obtained from -f or from an SMTP
1427 MAIL command, and the trusted user did not use -F to supply a sender
1428 name, $originator_name was incorrectly used when constructing a From:
1429 header. Furthermore, $originator_name was used for submission mode
1430 messages from external hosts without From: headers in a similar way,
1431 which is clearly wrong.
1432
8800895a
PH
1433PH/37 Added control=suppress_local_fixups.
1434
ccfdb010
PH
1435PH/38 When log_selector = +received_sender was set, and the addition of the
1436 sender made the log line's construction buffer exactly full, or one byte
1437 less than full, an overflow happened when the terminating "\n" was
1438 subsequently added.
1439
1130bfb0
PH
1440PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry
1441 when the result of a list match is failure because a DNS lookup failed.
1442
ebcb507f
PH
1443PH/40 RM_COMMAND is now used in the building process.
1444
c35e155c
PH
1445PH/41 Added a "distclean" target to the top-level Makefile; it deletes all
1446 the "build-* directories that it finds.
1447
95d1f782
PH
1448PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP
1449 address in a domain literal was a prefix of an interface address.
1450
fd6de02e
PH
1451PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains
1452 when verifying a sender address, unless rewrite_headers is false.
1453
58de37c5
PH
1454PH/44 Wrote a long comment about why errors_to addresses are verified as
1455 recipients, not senders.
1456
261cf466
TF
1457TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when
1458 the ratelimit ACL was added.
1459
3ee512ff
PH
1460PH/45 Added $smtp_command for the full command (cf $smtp_command_argument).
1461
e08c430f
PH
1462PH/46 Added extra information about PostgreSQL errors to the error string.
1463
bef5a11f
PH
1464PH/47 Added an interface to a fake DNS resolver for use by the new test suite,
1465 avoiding the need to install special zones in a real server. This is
1466 backwards compatible; if it can't find the fake resolver, it drops back.
1467 Thus, both old and new test suites can be run.
1468
7546de58
TF
1469TF/02 Added util/ratelimit.pl
1470
e5d5a95f
TF
1471TF/03 Minor fix to the ratelimit code to improve its behaviour in case the
1472 clock is set back in time.
1473
2e88a017
TF
1474TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian
1475 Candler <B.Candler@pobox.com>.
1476
a5f65aa4
TF
1477TF/05 The fix for PH/43 was not completely correct; widen_domains is always
1478 OK for addresses that are the result of redirections.
1479
e7726cbf
PH
1480PH/48 A number of further additions for the benefit of the new test suite,
1481 including a fake gethostbyname() that interfaces to the fake DNS resolver
1482 (see PH/47 above).
1483
a7fdad5b
TF
1484TF/06 The fix for widen_domains has also been applied to qualify_single and
1485 search_parents which are the other dnslookup options that can cause
1486 header rewrites.
1487
6af56900
PH
1488PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter
1489 type ("H").
1490
0925ede6
PH
1491PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable.
1492
66afa403
TF
1493TF/07 Exim produced the error message "an SRV record indicated no SMTP
1494 service" if it encountered an MX record with an empty target hostname.
1495 The message is now "an MX or SRV record indicated no SMTP service".
1496
0154e85a
TF
1497TF/08 Change PH/13 introduced the possibility that verify=helo may defer,
1498 if the DNS of the sending site is misconfigured. This is quite a
1499 common situation. This change restores the behaviour of treating a
1500 helo verification defer as a failure.
1501
16f12c76
PH
1502PH/51 If self=fail was set on a router, the bounce message did not include the
1503 actual error message.
1504
bbe902f0 1505
e5a9dba6
PH
1506Exim version 4.52
1507-----------------
1508
1509TF/01 Added support for Client SMTP Authorization. See NewStuff for details.
1510
22c3b60b
PH
1511PH/01 When a transport filter timed out in a pipe delivery, and the pipe
1512 command itself ended in error, the underlying message about the transport
1513 filter timeout was being overwritten with the pipe command error. Now the
1514 underlying error message should be appended to the second error message.
1515
06a9b4b5
PH
1516TK/01 Fix poll() being unavailable on Mac OSX 10.2.
1517
c1ac6996
PH
1518PH/02 Reduce the amount of output that "make" produces by default. Full output
1519 can still be requested.
1520
9c7a242c
PH
1521PH/03 The warning log line about a condition test deferring for a "warn" verb
1522 was being output only once per connection, rather than after each
1523 occurrence (because it was using the same function as for successful
1524 "warn" verbs). This seems wrong, so I have changed it.
1525
87ba3f5f
PH
1526TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that
1527 it should not have, which might have caused a crash in the right
1528 circumstances, but probably never did.
1529
1530PH/04 Installed a modified version of Tony Finch's patch to make submission
1531 mode fix the return path as well as the Sender: header line, and to
1532 add a /name= option so that you can make the user's friendly name appear
1533 in the header line.
1534
29aba418
TF
1535TF/03 Added the control = fakedefer ACL modifier.
1536
fe0dab11
TF
1537TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to
1538 Mark Lowes for thorough testing.
870f6ba8 1539
11d337a4
TK
1540TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0.
1541
1542TK/03 Merged latest SRS patch from Miles Wilton.
1543
415c8f3b
PH
1544PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
1545 with the definition in sysexits.h (which is #included earlier).
1546 Fortunately, Exim does not actually use EX_OK. The code used to try to
1547 preserve the sysexits.h value, by assumimg that macro definitions were
1548 scanned for macro replacements. I have been disabused of this notion,
1549 so now the code just undefines EX_OK before #including unistd.h.
11d337a4 1550
958541e9
PH
1551PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout
1552 in the smtp transport. When a block could not be written in a single
1553 write() function, the timeout was being re-applied to each part-write.
1554 This seems wrong - if the receiver was accepting one byte at a time it
1555 would take for ever. The timeout is now adjusted when this happens. It
1556 doesn't have to be particularly precise.
1557
c206415f
TK
1558TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for
1559 details. Thanks to Chris Webb <chris@arachsys.com> for the patch!
1560
2a4be8f9
PH
1561PH/07 Added "fullpostmaster" verify option, which does a check to <postmaster>
1562 without a domain if the check to <postmaster@domain> fails.
1563
1cba11c5
SC
1564SC/01 Eximstats: added -xls and the ability to specify output files
1565 (patch written by Frank Heydlauf).
1566
1567SC/02 Eximstats: use FileHandles for outputing results.
1568
1569SC/03 Eximstats: allow any combination of xls, txt, and html output.
1570
1571SC/04 Eximstats: fixed display of large numbers with -nvr option
1572
1573SC/05 Eximstats: fixed merging of reports with empty tables.
1574
1575SC/06 Eximstats: added the -include_original_destination flag
1576
1577SC/07 Eximstats: removed tabs and trailing whitespace.
1578
1005d00e
TK
1579TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller.
1580
1581TK/06 MBOX spool code: Add real "From " MBOX separator line
1582 so the .eml file is really in mbox format (even though
1583 most programs do not really care). Patch from Alex Miller.
1584
1585TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers.
1586 The latter is generated from $received_to and is only set if the
1587 message has one envelope recipient. SA can use these headers,
1588 obviously out-of-the-box. Patch from Alex Miller.
1589
9b4768fa
PH
1590PH/08 The ${def test on a variable was returning false if the variable's
1591 value was "0", contrary to what the specification has always said!
1592 The result should be true unless the variable is empty.
1593
1594PH/09 The syntax error of a character other than { following "${if
1595 def:variable_name" (after optional whitespace) was not being diagnosed.
1596 An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an
1597 accidental colon was present, for example, could give incorrect results.
1598
0d7eb84a
PH
1599PH/10 Tidied the code in a number of places where the st_size field of a stat()
1600 result is used (not including appendfile, where other changes are about
1601 to be made).
1602
1603PH/11 Upgraded appendfile so that quotas larger than 2G are now supported.
1604 This involved changing a lot of size variables from int to off_t. It
1605 should work with maildirs and everything.
1606
40727bee
TK
1607TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of
1608 spamd dying while we are connected to it.
1609
554d2369
TF
1610TF/05 Fixed a ${extract error message typo reported by Jeremy Harris
1611 <jgh@wizmail.org>
1612
1f922db1
PH
1613PH/12 Applied Alex Kiernan's patch for the API change for the error callback
1614 function for BDB 4.3.
1615
ef213c3b
PH
1616PH/13 Changed auto_thaw such that it does not apply to bounce messages.
1617
8ac170f3
PH
1618PH/14 Imported PCRE 6.0; this was more than just a trivial operation because
1619 the sources for PCRE have been re-arranged and more files are now
1620 involved.
1621
b1c749bb
PH
1622PH/15 The code I had for printing potentially long long variables in PH/11
1623 above was not the best (it lost precision). The length of off_t variables
1624 is now inspected at build time, and an appropriate printing format (%ld
c6c2dc1d
PH
1625 or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T
1626 to be "long long int" or "long int". This is needed for the internal
1627 formatting function string_vformat().
b1c749bb 1628
4aac9b49
PH
1629PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in
1630 the configuration file to be ":syslog", then the script "guesses" where
1631 the logs files are, rather than using the compiled in default. In our
1632 case the guess is not the same as the compiled default, so the script
1633 suddenly stopped working when I started to use syslog. The patch checks
1634 to see if log_file_path is "". If so, it attempts to read it from exim
1635 with no configuration file to get the compiled in version, before it
1636 falls back to the previous guessing code."
1637
294520c8
TK
1638TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with
1639 implementing BATV in an Exim configuration. See NewStuff for the gory
1640 details.
1641
5bd022fe
PH
1642PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and
1643 Makefile that are specific to HP-UX.
1644
90e9ce59
PH
1645PH/18 If the "use_postmaster" option was set for a recipient callout together
1646 with the "random" option, the postmaster address was used as the MAIL
1647 FROM address for the random test, but not for the subsequent recipient
1648 test. It is now used for both.
1649
5ea81592
PH
1650PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The
1651 patch removes a few documentation additions to RFC 3028, because the
1652 latest draft now contains them. It adds the new en;ascii-case comparator
1653 and a new error check for 8bit text in MIME parts. Comparator and
1654 require names are now matched exactly. I enabled the subaddress
1655 extension, but it is not well tested yet (read: it works for me)."
1656
c6c2dc1d
PH
1657PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to
1658 rework some of the code of TK/09 above to avoid the hardwired use of
1659 "%lld" and "long long". Replaced the call to snprintf() with a call to
1660 string_vformat().
1661
fffffe4c
PH
1662PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX
1663 records point to non-existent hosts", "retry timeout exceeded", and
1664 "retry time not reached for any host after a long failure period".
ca02eafb 1665
9a26b6b2
PH
1666PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with
1667 experimental DomainKeys support:
1668
1669 (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken.
1670 (2) On an error such as an illegally used "control", the wrong name for
1671 the control was given.
1672
1673 These problems did NOT occur unless DomainKeys support was compiled.
1674
4aee0225
PH
1675PH/23 Added daemon_startup_retries and daemon_startup_sleep.
1676
32d668a5
PH
1677PH/24 Added ${if match_ip condition.
1678
8187c3f3
PH
1679PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints
1680 databases so that it will be absolutely obvious if a crash occurs in the
1681 DB library. This is a regular occurrence (often caused by mis-matched
1682 db.h files).
1683
ff790e47 1684PH/26 Insert a lot of missing (void) casts for functions such as chown(),
f1e894f3
PH
1685 chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were
1686 picked up on a user's system that detects such things. There doesn't seem
1687 to be a gcc warning option for this - only an attribute that has to be
1688 put on the function's prototype. It seems that in Fedora Core 4 they have
1689 set this on a number of new functions. No doubt there will be more in due
1690 course.
ff790e47 1691
5417f6d1
PH
1692PH/27 If a dnslookup or manualroute router is set with verify=only, it need not
1693 specify a transport. However, if an address that was verified by such a
1694 router was the subject of a callout, Exim crashed because it tried to
1695 read the rcpt_include_affixes from the non-existent transport. Now it
1696 just assumes that the setting of that option is false. This bug was
1697 introduced by 4.51/PH/31.
1698
59cf8544
PH
1699PH/28 Changed -d+all to exclude +memory, because that information is very
1700 rarely of interest, but it makes the output a lot bigger. People tend to
1701 do -d+all out of habit.
1702
e7ad8a65
PH
1703PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the
1704 code in os-type was giving problems when libc.so lives in lib64, like on
1705 x86_64 Fedora Core.
1706
ade42478
PH
1707PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These
1708 aren't the modern standard, and it seems that some systems' include files
1709 don't always have them. Exim was already checking for some of the newer
1710 ones like T_AAAA, and defining it itself. I've added checks for all the
1711 record types that Exim uses.
1712
182ad5cf
PH
1713PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was
1714 not automatically generating a new one, as it is supposed to. This
1715 prevented TLS from working. If the file did exist, but contained invalid
1716 data, a new version was generated, as expected. It was only the case of a
1717 non-existent file that was broken.
1718
b0d9fc80
TK
1719TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction
1720 with a change in libdomainkeys > 0.64.
1721
1722TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved
1723 from DNS. If the selector record carries the flag, it now has
1724 precedence over the domain-wide flag.
1725
1726TK/12 Cleared some compiler warnings related to SPF, SRS and DK code.
1727
47c7a64a
PH
1728PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as
1729 the use of a port name that isn't defined in /etc/services) occurred, the
1730 message was deferred as in a normal delivery, and thus remained on the
1731 spool, instead of being failed because of the mua_wrapper setting. This
1732 is now fixed, and I tidied up some of the mua_wrapper messages at the
1733 same time.
1734
a388bce4
SC
1735SC/08 Eximstats: whilst parsing the mainlog(s), store information about
1736 the messages in a hash of arrays rather than using individual hashes.
1737 This is a bit cleaner and results in dramatic memory savings, albeit
1738 at a slight CPU cost.
1739
1740SC/09 Eximstats: added the -show_rt<list> and the -show_dt<list> flags
1741 as requested by Marc Sherman.
1742
1743SC/10 Eximstats: added histograms for user specified patterns as requested
1744 by Marc Sherman.
1745
0793e4ed
SC
1746SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified.
1747
c58b88df
PH
1748PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of
1749 fopen() in the content-scanning modules that did not already have it.
1750
e7ad8a65 1751
7982096b
PH
1752Exim version 4.51
1753-----------------
1754
1a46a8c5
PH
1755TK/01 Added Yahoo DomainKeys support via libdomainkeys. See
1756 doc/experimental-spec.txt for details. (http://domainkeys.sf.net)
1757
2f079f46 1758TK/02 Fix ACL "control" statement not being available in MIME ACL.
1a46a8c5
PH
1759
1760TK/03 Fix ACL "regex" condition not being available in MIME ACL.
1761
1762PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used
1763 to test Sieve filters that use "vacation".
1764
1765PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch
1766 that changes the way the GnuTLS parameters are stored in the cache file.
1767 The new format can be generated externally. For backward compatibility,
1768 if the data in the cache doesn't make sense, Exim assumes it has read an
1769 old-format file, and it generates new data and writes a new file. This
1770 means that you can't go back to an older release without removing the
1771 file.
1772
1773PH/03 A redirect router that has both "unseen" and "one_time" set does not
1774 work if there are any delivery delays because "one_time" forces the
1775 parent to be marked "delivered", so its unseen clone is never tried
1776 again. For this reason, Exim now forbids the simultaneous setting of
1777 these two options.
1778
1779PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are
1780 redirected to themselves ("homonym" addresses). Read the long ChangeLog
1781 entry if you want to know the details. The fix, however, neglected to
1782 consider the case when local delivery batching is involved. The test for
1783 "previously delivered" was not happening when checking to see if an
1784 address could be batched with a previous (undelivered) one; under
1785 certain circumstances this could lead to multiple deliveries to the same
c2c19e9d 1786 address.
1a46a8c5
PH
1787
1788PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T
1789 in its include files, and this causes problems building Exim.
1790
1791PH/06 A number of "verify =" ACL conditions have no options (e.g. verify =
1792 header_syntax) but Exim was just ignoring anything given after a slash.
1793 In particular, this caused confusion with an attempt to use "verify =
1794 reverse_host_lookup/defer_ok". An error is now given when options are
1795 supplied for verify items that do not have them. (Maybe reverse_host_
1796 lookup should have a defer_ok option, but that's a different point.)
1797
1798PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as
1799 defined by RFC 821) to 2048, because there were problems with some AUTH
1800 commands, and RFC 1869 says the size should be increased for extended
1801 SMTP commands that take arguments.
1802
1803PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony
1804 Finch).
1805
1806PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an
1807 "unknown" error; now it says that the functionality isn't in the binary.
8d67ada3 1808
49c2d5ea
PH
1809PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in
1810 an address' error message when a string expansion fails (syntax or
f331f3b6
PH
1811 whatever). Otherwise the password may appear in the log. Following change
1812 PH/42 below, there is no longer a chance of it appearing in a bounce
1813 message.
49c2d5ea 1814
bf759a8b
PH
1815PH/11 Installed exipick version 20050225.0 from John Jetmore.
1816
83364d30
PH
1817PH/12 If the last host in a fallback_hosts list was multihomed, only the first
1818 of its addresses was ever tried. (Bugzilla bug #2.)
1819
7999bbd7
PH
1820PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed
1821 the result incorrectly in the debug output. (It correctly added a newline
1822 to what was transported.)
1823
7dbf77c9
PH
1824TF/01 Added $received_time.
1825
74e0617f
PH
1826PH/14 Modified the default configuration to add an acl_smtp_data ACL, with
1827 commented out examples of how to interface to a virus scanner and to
1828 SpamAssassin. Also added commented examples of av_scanner and
1829 spamd_address settings.
1830
2f079f46
PH
1831PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions
1832 and controls are allowed in which ACLs. There were a couple of minor
1833 errors. Some of the entries in the conditions table (which is a table of
1834 where they are NOT allowed) were getting very unwieldy; rewrote them as a
1835 negation of where the condition IS allowed.
1836
8c841523
PH
1837PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer.
1838
7766a4f0
PH
1839PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the
1840 header file does not have a version number, so I've had to invent a new
1841 value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new
1842 API. The code is untested by me (my Linux distribution still has 0.3.2 of
1843 radiusclient), but it was contributed by a Radius user.
1844
8b417f2c
PH
1845PH/18 Installed Lars Mainka's patch for the support of CRL collections in
1846 files or directories, for OpenSSL.
1847
901f42cb
PH
1848PH/19 When an Exim process that is running as root has to create an Exim log
1849 file, it does so in a subprocess that runs as exim:exim so as to get the
1850 ownership right at creation (otherwise, other Exim processes might see
1851 the file with the wrong ownership). There was no test for failure of this
1852 fork() call, which would lead to the process getting stuck as it waited
1853 for a non-existent subprocess. Forks do occasionally fail when resources
1854 run out. I reviewed all the other calls to fork(); they all seem to check
1855 for failure.
1856
f9b9210e
PH
1857PH/20 When checking for unexpected SMTP input at connect time (before writing
1858 the banner), Exim was not dealing correctly with a non-positive return
1859 from the read() function. If the client had disconnected by this time,
1860 the result was a log entry for a synchronization error with an empty
1861 string after "input=" when read() returned zero. If read() returned -1
1862 (an event I could not check), uninitialized data bytes were printed.
1863 There were reports of junk text (parts of files, etc) appearing after
1864 "input=".
1865
54cdb463
PH
1866PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages.
1867
cf00dad6
PH
1868PH/22 Added support for macro redefinition, and (re)definition in between
1869 driver and ACL definitions.
1870
acb1b346
PH
1871PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then
1872 forgetting to use the resulting value; it was using the unexpanded value.
1873
c5ddb310
PH
1874PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it
1875 hadn't been configured. The fix is from Juergen Kreileder, who
1876 understands it better than I do:
1877
1878 "Here's what I see happening with three configured cyrus_sasl
1879 authenticators configured (plain, login, cram-md5):
1880
1881 On startup auth_cyrus_sasl_init() gets called for each of these.
1882 This means three calls to sasl_listmech() without a specified mech_list.
1883 => SASL tests which mechs of all available mechs actually work
1884 => three warnings about OTP not working
1885 => the returned list contains: plain, login, cram-md5, digest-md5, ...
1886
1887 With the patch, sasl_listmech() also gets called three times. But now
1888 SASL's mech_list option is set to the server_mech specified in the the
1889 authenticator. Or in other words, the answer from sasl_listmech()
1890 gets limited to just the mech you're testing for (which is different
1891 for each call.)
1892 => the return list contains just 'plain' or 'login', 'cram-md5' or
1893 nothing depending on the value of ob->server_mech.
1894
1895 I've just tested the patch: Authentication still works fine,
1896 unavailable mechs specified in the exim configuration are still
1897 caught, and the auth.log warnings about OTP are gone."
1898
31619da6
PH
1899PH/25 When debugging is enabled, the contents of the command line are added
1900 to the debugging output, even when log_selector=+arguments is not
1901 specified.
1902
bebaf0fc
PH
1903PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the
1904 answer is "GNU", and only if the return is "GNU/something" is the answer
1905 "Linux".
1906
475fe28a
PH
1907PH/27 $acl_verify_message is now set immediately after the failure of a
1908 verification in an ACL, and so is available in subsequent modifiers. In
1909 particular, the message can be preserved by coding like this:
1910
1911 warn !verify = sender
1912 set acl_m0 = $acl_verify_message
1913
1914 Previously, $acl_verify_message was set only while expanding "message"
1915 and "log_message" when a very denied access.
1916
7e8bec7a
PH
1917PH/28 Modified OS/os.c-Linux with
1918
1919 -#ifndef OS_LOAD_AVERAGE
1920 +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__)
1921
1922 to make Exim compile on kfreebsd-gnu. (I'm totally confused about the
1923 nomenclature these days.)
1924
e4a89c47
PH
1925PH/29 Installed patch from the Sieve maintainer that adds the options
1926 sieve_useraddress and sieve_subaddress to the redirect router.
1927
5ca2a9a1
PH
1928PH/30 In these circumstances:
1929 . Two addresses routed to the same list of hosts;
1930 . First host does not offer TLS;
1931 . First host accepts first address;
1932 . First host gives temporary error to second address;
1933 . Second host offers TLS and a TLS session is established;
1934 . Second host accepts second address.
1935 Exim incorrectly logged both deliveries with the TLS parameters (cipher
1936 and peerdn, if requested) that were in fact used only for the second
1937 address.
7e8bec7a 1938
c688b954
PH
1939PH/31 When doing a callout as part of verifying an address, Exim was not paying
1940 attention to any local part prefix or suffix that was matched by the
1941 router that accepted the address. It now behaves in the same way as it
1942 does for delivery: the affixes are removed from the local part unless
1943 rcpt_include_affixes is set on the transport.
1944
fed77020
PH
1945PH/32 Add the sender address, as F=<...>, to the log line when logging a
1946 timeout during the DATA phase of an incoming message.
1947
7fe1560f
PH
1948PH/33 Sieve envelope tests were broken for match types other than :is. I have
1949 applied a patch sanctioned by the Sieve maintainer.
c688b954 1950
ebb6e6d5
PH
1951PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where
1952 the uid or gid is negative. A case of a negative gid caused this to be
1953 noticed. The fix allows for either to be negative.
1954
9c4e8f60
PH
1955PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code
1956 clutter, but the tables that are indexed by ACL_WHERE_xxx values had been
1957 overlooked.
1958
1959PH/36 The change PH/12 above was broken. Fixed it.
1960
d7174846
PH
1961PH/37 Exim used to check for duplicate addresses in the middle of routing, on
1962 the grounds that routing the same address twice would always produce the
1963 same answer. This might have been true once, but it is certainly no
1964 longer true now. Routing a child address may depend on the previous
1965 routing that produced that child. Some complicated redirection strategies
1966 went wrong when messages had multiple recipients, and made Exim's
1967 behaviour dependent on the order in which the addresses were given.
1968
1969 I have moved the duplicate checking until after the routing is complete.
1970 Exim scans the addresses that are assigned to local and remote
1971 transports, and removes any duplicates. This means that more work will be
1972 done, as duplicates will always all be routed, but duplicates are
1973 presumably rare, so I don't expect this is of any significance.
1974
1975 For deliveries to pipes, files, and autoreplies, the duplicate checking
1976 still happens during the routing process, since they are not going to be
1977 routed further.
1978
cfe75fc3
PH
1979PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner.
1980 It corrects a timeout issue with spamd. This is Ian's comment: "The
1981 background is that sometimes spamd either never reads data from a
1982 connection it has accepted, or it never writes response data. The exiscan
1983 spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it
1984 blindly assumes that writes won't block so it may never time out."
1985
be22d70e
PH
1986PH/39 Allow G after quota size as well as K and M.
1987
0612b098
PH
1988PH/40 The value set for $authenticated_id in an authenticator may not contain
1989 binary zeroes or newlines because the value is written to log lines and
1990 to spool files. There was no check on this. Now the value is run through
1991 the string_printing() function so that such characters are converted to
1992 printable escape sequences.
1993
2e0c1448
PH
1994PH/41 $message_linecount is a new variable that contains the total number of
1995 lines in the message. Compare $body_linecount, which is the count for the
1996 body only.
1997
447d236c
PH
1998PH/42 Exim no longer gives details of delivery errors for specific addresses in
1999 bounce and delay warning messages, except in certain special cases, which
2000 are as follows:
2001
2002 (a) An SMTP error message from a remote host;
2003 (b) A message specified in a :fail: redirection;
2004 (c) A message specified in a "fail" command in a system filter;
2005 (d) A message specified in a FAIL return from the queryprogram router;
2006 (e) A message specified by the cannot_route_message router option.
2007
2008 In these cases only, Exim does include the error details in bounce and
2009 warning messages. There are also a few cases where bland messages such
2010 as "unrouteable address" or "local delivery error" are given.
2011
d20976dc
PH
2012PH/43 $value is now also set for the "else" part of a ${run expansion.
2013
f656d135
PH
2014PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still
2015 being worked on, but at least Exim now implements the latest version to
2016 play with."
2017
2e2a30b4
PH
2018PH/45 In a pipe transport, although a timeout while waiting for the pipe
2019 process to complete was treated as a delivery failure, a timeout while
2020 writing the message to the pipe was logged, but erroneously treated as a
2021 successful delivery. Such timeouts include transport filter timeouts. For
2022 consistency with the overall process timeout, these timeouts are now
2023 treated as errors, giving rise to delivery failures by default. However,
2024 there is now a new Boolean option for the pipe transport called
2025 timeout_defer, which, if set TRUE, converts the failures into defers for
2026 both kinds of timeout. A transport filter timeout is now identified in
2027 the log output.
2028
9176e9f0
PH
2029PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On
2030 systems where "make" and "gmake" are different, calling "gmake" at top
2031 level broke things. I've arranged for the value of $(MAKE) to be passed
2032 from the Makefile to this script so that it can call the same version of
2033 "make".
2034
7982096b 2035
bbe902f0
PH
2036A note about Exim versions 4.44 and 4.50
2037----------------------------------------
2038
2039Exim 4.50 was meant to be the next release after 4.43. It contains a lot of
2040changes of various kinds. As a consequence, a big documentation update was
2041needed. This delayed the release for rather longer than seemed good, especially
2042in the light of a couple of (minor) security issues. Therefore, the changes
2043that fixed bugs were backported into 4.43, to create a 4.44 maintenance
2044release. So 4.44 and 4.50 are in effect two different branches that both start
2045from 4.43.
2046
2047I have left the 4.50 change log unchanged; it contains all the changes since
20484.43. The change log for 4.44 is below; many of its items are identical to
2049those for 4.50. This seems to be the most sensible way to preserve the
2050historical information.
2051
2052
f7b63901 2053Exim version 4.50
495ae4b0
PH
2054-----------------
2055
5fe762f6
PH
2056 1. Minor wording change to the doc/README.SIEVE file.
2057
139059f6 2058 2. Change 4.43/35 introduced a bug: if quota_filecount was set, the
5fe762f6 2059 computation of the current number of files was incorrect.
495ae4b0 2060
7086e875
PH
2061 3. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2062 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2063 place.
2064
35af9f61
PH
2065 4. Give more explanation in the error message when the command for a transport
2066 filter fails to execute.
2067
b668c215
PH
2068 5. There are several places where Exim runs a non-Exim command in a
2069 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2070 was being done only for the command run by the queryprogram router. It is
2071 now done for all such subprocesses. The other cases are: ${run, transport
2072 filters, and the commands run by the lmtp and pipe transports.
2073
a494b1e1
PH
2074 6. Added CONFIGURE_GROUP build-time option.
2075
2076 7. Some older OS have a limit of 256 on the maximum number of file
2077 descriptors. Exim was using setrlimit() to set 1000 as a large value
2078 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2079 systems. I've change it so that if it can't get 1000, it tries for 256.
35edf2ff 2080
c5fcb476
PH
2081 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2082 was an oversight, and furthermore, ever since the addition of extra
2083 controls (e.g. 4.43/32), the checks on when to allow different forms of
2084 "control" were broken. There should now be diagnostics for all cases when a
2085 control that does not make sense is encountered.
2086
69358f02
PH
2087 9. Added the /retain_sender option to "control=submission".
2088
5be20824
PH
208910. $recipients is now available in the predata ACL (oversight).
2090
eb2c0248
PH
209111. Tidy the search cache before the fork to do a delivery from a message
2092 received from the command line. Otherwise the child will trigger a lookup
2093 failure and thereby defer the delivery if it tries to use (for example) a
2094 cached ldap connection that the parent has called unbind on.
2095
2a3eea10
PH
209612. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2097 of $address_data from the recipient verification was clobbered by the
2098 sender verification.
2099
210013. The value of address_data from a sender verification is now available in
2101 $sender_address_data in subsequent conditions in the ACL statement.
2102
23c7ff99
PH
210314. Added forbid_sieve_filter and forbid_exim_filter to the redirect router.
2104
4deaf07d
PH
210515. Added a new option "connect=<time>" to callout options, to set a different
2106 connection timeout.
2107
926e1192
PH
210816. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2109 was its contents. (It was OK if the option was not defined at all.)
2110
650edc6f
PH
211117. A "Completed" log line is now written for messages that are removed from
2112 the spool by the -Mrm option.
2113
2c7db3f5
PH
211418. New variables $sender_verify_failure and $recipient_verify_failure contain
2115 information about exactly what failed.
2116
3d235903
PH
211719. Added -dd to debug only the daemon process.
2118
7c7ad977
PH
211920. Incorporated Michael Haardt's patch to ldap.c for improving the way it
2120 handles timeouts, both on the server side and network timeouts. Renamed the
2121 CONNECT parameter as NETTIMEOUT (but kept the old name for compatibility).
2122
981756db
PH
212321. The rare case of EHLO->STARTTLS->HELO was setting the protocol to "smtp".
2124 It is now set to "smtps".
2125
d4eb88df
PH
212622. $host_address is now set to the target address during the checking of
2127 ignore_target_hosts.
2128
212923. When checking ignore_target_hosts for an ipliteral router, no host name was
2130 being passed; this would have caused $sender_host_name to have been used if
2131 matching the list had actually called for a host name (not very likely,
2132 since this list is usually IP addresses). A host name is now passed as
2133 "[x.x.x.x]".
2134
7d468ab8
PH
213524. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2136 code that specifies a non-restarting handler (typically sigaction() in
2137 modern systems) in an attempt to fix a rare and obscure crash bug.
2138
213925. Narrowed the window for a race in the daemon that could cause it to ignore
2140 SIGCHLD signals. This is not a major problem, because they are used only to
2141 wake it up if nothing else does.
2142
62c0818f
PH
214326. A malformed maildirsize file could cause Exim to calculate negative values
2144 for the mailbox size or file count. Odd effects could occur as a result.
2145 The maildirsize information is now recalculated if the size or filecount
2146 end up negative.
2147
26034054
PH
214827. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2149 support for a long time. Removed HAVE_SYS_VFS_H.
2150
af66f652
PH
215128. Installed the latest version of exipick from John Jetmore.
2152
90af77f4
PH
215329. In an address list, if the pattern was not a regular expression, an empty
2154 subject address (from a bounce message) matched only if the pattern was an
2155 empty string. Non-empty patterns were not even tested. This was the wrong
2156 because it is perfectly reasonable to use an empty address as part of a
2157 database query. An empty address is now tested by patterns that are
2158 lookups. However, all the other forms of pattern expect the subject to
2159 contain a local part and a domain, and therefore, for them, an empty
2160 address still always fails if the pattern is not itself empty.
2161
d8ef3577
PH
216230. Exim went into a mad DNS loop when attempting to do a callout where the
2163 host was specified on an smtp transport, and looking it up yielded more
2164 than one IP address.
2165
5cb8cbc6
PH
216631. Re-factored the code for checking spool and log partition space into a
2167 function that finds that data and another that does the check. The former
2168 is then used to implement four new variables: $spool_space, $log_space,
2169 $spool_inodes, and $log_inodes.
2170
14702f5b
PH
217132. The RFC2047 encoding function was originally intended for short strings
2172 such as real names; it was not keeping to the 75-character limit for
2173 encoded words that the RFC imposes. It now respects the limit, and
2174 generates multiple encoded words if necessary. To be on the safe side, I
2175 have increased the buffer size for the ${rfc2047: expansion operator from
2176 1024 to 2048 bytes.
2177
063b1e99
PH
217833. It is now permitted to omit both strings after an "if" condition; if the
2179 condition is true, the result is "true". As before, when the second string
2180 is omitted, a false condition yields an empty string. This makes it less
2181 cumbersome to write custom ACL and router conditions.
2182
652e1b65
PH
218334. Failure to deliver a bounce message always caused it to be frozen, even if
2184 there was an errors_to setting on the router. The errors_to setting is now
2185 respected.
2186
6f0c9a4f
PH
218735. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2188 canonical form (fully expanded) before being placed in
2189 $sender_host_address.
2190
33397d19
PH
219136. The table in the code that translates DNS record types into text (T_A to
2192 "A" for instance) was missing entries for NS and CNAME. It is just possible
2193 that this could have caused confusion if both these types were looked up
2194 for the same domain, because the text type is used as part of Exim's
2195 per-process caching. But the chance of anyone hitting this buglet seems
2196 very small.
2197
7bb56e1f
PH
219837. The dnsdb lookup has been extended in a number of ways.
2199
2200 (1) There is a new type, "zns", which walks up the domain tree until it
2201 finds some nameserver records. It should be used with care.
2202
ea3bc19b
PH
2203 (2) There is a new type, "mxh", which is like "mx" except that it returns
2204 just the host names, not the priorities.
2205
2206 (3) It is now possible to give a list of domains (or IP addresses) to be
ff4dbb19
PH
2207 looked up. The behaviour when one of the lookups defers can be
2208 controlled by a keyword.
7bb56e1f 2209
ea3bc19b 2210 (4) It is now possible to specify the separator character for use when
7bb56e1f 2211 multiple records are returned.
33397d19 2212
0bcb2a0e
PH
221338. The dnslists ACL condition has been extended: it is now possible to supply
2214 a list of IP addresses and/or domains to be looked up in a particular DNS
2215 domain.
2216
2ac0e484
PH
221739. Added log_selector=+queue_time_overall.
2218
4e1fde53
PH
221940. When running the queue in the test harness, wait just a tad after forking a
2220 delivery process, to get repeatability of debugging output.
2221
de365ded
PH
222241. Include certificate and key file names in error message when GnuTLS fails
2223 to set them up, because the GnuTLS error message doesn't include the name
2224 of the failing file when there is a problem reading it.
2225
f05da2e8
PH
222642. Allow both -bf and -bF in the same test run.
2227
d6453af2
PH
222843. Did the same fix as 41 above for OpenSSL, which had the same infelicity.
2229
f7b63901
PH
223044. The "Exiscan patch" is now merged into the mainline Exim source.
2231
223245. Sometimes the final signoff response after QUIT could fail to get
2233 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2234 < 0 before doing a fflush(). This bug looks as though it goes back to the
2235 introduction of TLS in release 3.20, but "sometimes" must have been rare
2236 because the tests only now provoked it.
2237
a444213a
PH
223846. Reset the locale to "C" after calling embedded Perl, in case it was changed
2239 (this can affect the format of dates).
2240
0ec020ea
PH
224147. exim_tidydb, when checking for the continued existence of a message for
2242 which it has found a message-specific retry record, was not finding
2243 messages that were in split spool directories. Consequently, it was
2244 deleting retry records that should have stayed in existence.
2245
b1206957
PH
224648. Steve fixed some bugs in eximstats.
2247
224849. The SPA authentication driver was not abandoning authentication and moving
2249 on to the next authenticator when an expansion was forced to fail,
2250 contradicting the general specification for all authenticators. Instead it
2251 was generating a temporary error. It now behaves as specified.
2252
26dd5a95
PH
225350. The default ordering of permitted cipher suites for GnuTLS was pessimal
2254 (the order specifies the preference for clients). The order is now AES256,
2255 AES128, 3DES, ARCFOUR128.
2256
343b2385
PH
225751. Small patch to Sieve code - explicitly set From: when generating an
2258 autoreply.
2259
1c5466b9
PH
226052. Exim crashed if a remote delivery caused a very long error message to be
2261 recorded - for instance if somebody sent an entire SpamAssassin report back
2262 as a large number of 550 error lines. This bug was coincidentally fixed by
2263 increasing the size of one of Exim's internal buffers (big_buffer) that
2264 happened as part of the Exiscan merge. However, to be on the safe side, I
2265 have made the code more robust (and fixed the comments that describe what
2266 is going on).
2267
55ee9ee3
PH
226853. Now that there can be additional text after "Completed" in log lines (if
2269 the queue_time_overall log selector is set), a one-byte patch to exigrep
2270 was needed to allow it to recognize "Completed" as not the last thing in
2271 the line.
2272
d38f8232
PH
227354. The LDAP lookup was not handling a return of LDAP_RES_SEARCH_REFERENCE. A
2274 patch that reportedly fixes this has been added. I am not expert enough to
2275 create a test for it. This is what the patch creator wrote:
2276
2277 "I found a little strange behaviour of ldap code when working with
2278 Windows 2003 AD Domain, where users was placed in more than one
2279 Organization Units. When I tried to give exim partial DN, the exit code
2280 of ldap_search was unknown to exim because of LDAP_RES_SEARCH_REFERENCE.
2281 But simultaneously result of request was absolutely normal ldap result,
2282 so I produce this patch..."
2283
3295e65b
PH
2284 Later: it seems that not all versions of LDAP support LDAP_RES_SEARCH_
2285 REFERENCE, so I have modified the code to exclude the patch when that macro
2286 is not defined.
2287
7102e136
PH
228855. Some experimental protocols are using DNS PTR records for new purposes. The
2289 keys for these records are domain names, not reversed IP addresses. The
b975ba52
PH
2290 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2291 leaves it alone. Component reversal etc. now happens only for IP addresses.
ea3a6f44 2292 CAN-2005-0021
7102e136 2293
3ca0ba97
PH
229456. Improve error message when ldap_search() fails in OpenLDAP or Solaris LDAP.
2295
c2bcbe20
PH
229657. Double the size of the debug message buffer (to 2048) so that more of very
2297 long debug lines gets shown.
2298
18ce445d
PH
229958. The exicyclog utility now does better if the number of log files to keep
2300 exceeds 99. In this case, it numbers them 001, 002 ... instead of 01, 02...
2301
1f5b4c3d
PH
230259. Two changes related to the smtp_active_hostname option:
2303
2304 (1) $smtp_active_hostname is now available as a variable.
2305 (2) The default for smtp_banner uses $smtp_active_hostname instead
2306 of $primary_hostname.
2307
b975ba52
PH
230860. The host_aton() function is supposed to be passed a string that is known
2309 to be a valid IP address. However, in the case of IPv6 addresses, it was
2310 not checking this. This is a hostage to fortune. Exim now panics and dies
2311 if the condition is not met. A case was found where this could be provoked
85b87bc2
PH
2312 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2313 components; fortuitously, this particular loophole had already been fixed
2314 by change 4.50/55 above.
2315
2316 If there are any other similar loopholes, the new check in host_aton()
2317 itself should stop them being exploited. The report I received stated that
2318 data on the command line could provoke the exploit when Exim was running as
2319 exim, but did not say which command line option was involved. All I could
2320 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2321 running as the user.
ea3a6f44 2322 CAN-2005-0021
85b87bc2
PH
2323
232461. There was a buffer overflow vulnerability in the SPA authentication code
2325 (which came originally from the Samba project). I have added a test to the
2326 spa_base64_to_bits() function which I hope fixes it.
ea3a6f44 2327 CAN-2005-0022
b975ba52 2328
17ffcae7
PH
232962. Configuration update for GNU/Hurd and variations. Updated Makefile-GNU and
2330 os.h-GNU, and added configuration files for GNUkFreeBSD and GNUkNetBSD.
2331
d95f9fdb
PH
233263. The daemon start-up calls getloadavg() while still root for those OS that
2333 need the first call to be done as root, but it missed one case: when
2334 deliver_queue_load_max is set with deliver_drop_privilege. This is
2335 necessary for the benefit of the queue runner, because there is no re-exec
2336 when deliver_drop_privilege is set.
2337
86b8287f
PH
233864. A call to exiwhat cut short delays set up by "delay" modifiers in ACLs.
2339 This has been fixed.
2340
60dc5e56
PH
234165. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2342 was in use, was not putting the data itself into the right store pool;
2343 consequently, it could be overwritten for a subsequent message in the same
2344 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2345 the caching.)
2346
533244af
PH
234766. Added hosts_max_try_hardlimit to the smtp transport, default 50.
2348
a5a28604
PH
234967. The string_is_ip_address() function returns 0, 4, or 6, for "no an IP
2350 address", "IPv4 address", and "IPv6 address", respectively. Some calls of
2351 the function were treating the return as a boolean value, which happened to
2352 work because 0=false and not-0=true, but is not correct code.
2353
7e634d24
PH
235468. The host_aton() function was not handling scoped IPv6 addresses (those
2355 with, for example, "%eth0" on the end) correctly.
2356
3e11c26b
PH
235769. Fixed some compiler warnings in acl.c for the bitmaps specified with
2358 negated items (that is, ~something) in unsigned ints. Some compilers
2359 apparently mutter when there is no cast.
2360
6729cf78
PH
236170. If an address verification called from an ACL failed, and did not produce a
2362 user-specific message (i.e. there was only a "system" message), nothing was
2363 put in $acl_verify_message. In this situation, it now puts the system
2364 message there.
2365
00f00ca5
PH
236671. Change 4.23/11 added synchronization checking at the start of an SMTP
2367 session; change 4.31/43 added the unwanted input to the log line - except
2368 that it did not do this in the start of session case. It now does.
2369
c9bdd01c
PH
237072. After a timeout in a callout SMTP session, Exim still sent a QUIT command.
2371 This is wrong and can cause the other end to generate a synchronization
2372 error if it is another Exim or anything else that does the synchronization
2373 check. A QUIT command is no longer sent after a timeout.
2374
d43194df
PH
237573. $host_lookup_deferred has been added, to make it easier to detect DEFERs
2376 during host lookups.
2377
fe5b5d0b
PH
237874. The defer_ok option of callout verification was not working if it was used
2379 when verifying addresses in header lines, that is, for this case:
2380
2381 verify = header_sender/callout=defer_ok
2382
76a2d7ba
PH
238375. A backgrounded daemon closed stdin/stdout/stderr on entry; this meant that
2384 those file descriptors could be used for SMTP connections. If anything
2385 wrote to stderr (the example that came up was "warn" in embedded Perl), it
2386 could be sent to the SMTP client, causing chaos. The daemon now opens
2387 stdin, stdout, and stderr to /dev/null when it puts itself into the
2388 background.
2389
239076. Arrange for output from Perl's "warn" command to be written to Exim's main
2391 log by default. The user can override this with suitable Perl magic.
2392
04f7d5b9
PH
239377. The use of log_message on a "discard" ACL verb, which is supposed to add to
2394 the log message when discard triggers, was not working for the DATA ACL or
2395 for the non-SMTP ACL.
2396
bc60667e
PH
239778. Error message wording change in sieve.c.
2398
bb6e88ff
PH
239979. If smtp_accept_max_per_host was set, the number of connections could be
2400 restricted to fewer than expected, because the daemon was trying to set up
2401 a new connection before checking whether the processes handling previous
2402 connections had finished. The check for completed processes is now done
2403 earlier. On busy systems, this bug wouldn't be noticed because something
2404 else would have woken the daemon, and it would have reaped the completed
2405 process earlier.
2406
1e70f85b
PH
240780. If a message was submitted locally by a user whose login name contained one
2408 or more spaces (ugh!), the spool file that Exim wrote was not re-readable.
2409 It caused a spool format error. I have fixed the spool reading code. A
2410 related problem was that the "from" clause in the Received: line became
2411 illegal because of the space(s). It is now covered by ${quote_local_part.
2412
241381. Included the latest eximstats from Steve (adds average sizes to HTML Top
2414 tables).
2415
4e01f9d6
PH
241682. Updated OS/Makefile-AIX as per message from Mike Meredith.
2417
1ee1cef2
PH
241883. Patch from Sieve maintainer to fix unterminated string problem in
2419 "vacation" handling.
2420
6e2b4ccc
PH
242184. Some minor changes to the Linux configuration files to help with other
2422 OS variants using glibc.
2423
8e669ac1
PH
242485. One more patch for Sieve to update vacation handling to latest spec.
2425
495ae4b0 2426
bbe902f0
PH
2427----------------------------------------------------
2428See the note above about the 4.44 and 4.50 releases.
2429----------------------------------------------------
2430
2431
2432Exim version 4.44
2433-----------------
2434
2435 1. Change 4.43/35 introduced a bug that caused file counts to be
2436 incorrectly computed when quota_filecount was set in an appendfile
2437 transport
2438
2439 2. Closing a stable door: arrange to panic-die if setitimer() ever fails. The
2440 bug fixed in 4.43/37 would have been diagnosed quickly if this had been in
2441 place.
2442
2443 3. Give more explanation in the error message when the command for a transport
2444 filter fails to execute.
2445
2446 4. There are several places where Exim runs a non-Exim command in a
2447 subprocess. The SIGUSR1 signal should be disabled for these processes. This
2448 was being done only for the command run by the queryprogram router. It is
2449 now done for all such subprocesses. The other cases are: ${run, transport
2450 filters, and the commands run by the lmtp and pipe transports.
2451
2452 5. Some older OS have a limit of 256 on the maximum number of file
2453 descriptors. Exim was using setrlimit() to set 1000 as a large value
2454 unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these
2455 systems. I've change it so that if it can't get 1000, it tries for 256.
2456
2457 6. "control=submission" was allowed, but had no effect, in a DATA ACL. This
2458 was an oversight, and furthermore, ever since the addition of extra
2459 controls (e.g. 4.43/32), the checks on when to allow different forms of
2460 "control" were broken. There should now be diagnostics for all cases when a
2461 control that does not make sense is encountered.
2462
2463 7. $recipients is now available in the predata ACL (oversight).
2464
2465 8. Tidy the search cache before the fork to do a delivery from a message
2466 received from the command line. Otherwise the child will trigger a lookup
2467 failure and thereby defer the delivery if it tries to use (for example) a
2468 cached ldap connection that the parent has called unbind on.
2469
2470 9. If verify=recipient was followed by verify=sender in a RCPT ACL, the value
2471 of $address_data from the recipient verification was clobbered by the
2472 sender verification.
2473
247410. If FIXED_NEVER_USERS was defined, but empty, Exim was assuming the uid 0
2475 was its contents. (It was OK if the option was not defined at all.)
2476
247711. A "Completed" log line is now written for messages that are removed from
2478 the spool by the -Mrm option.
2479
248012. $host_address is now set to the target address during the checking of
2481 ignore_target_hosts.
2482
248313. When checking ignore_target_hosts for an ipliteral router, no host name was
2484 being passed; this would have caused $sender_host_name to have been used if
2485 matching the list had actually called for a host name (not very likely,
2486 since this list is usually IP addresses). A host name is now passed as
2487 "[x.x.x.x]".
2488
248914. Changed the calls that set up the SIGCHLD handler in the daemon to use the
2490 code that specifies a non-restarting handler (typically sigaction() in
2491 modern systems) in an attempt to fix a rare and obscure crash bug.
2492
249315. Narrowed the window for a race in the daemon that could cause it to ignore
2494 SIGCHLD signals. This is not a major problem, because they are used only to
2495 wake it up if nothing else does.
2496
249716. A malformed maildirsize file could cause Exim to calculate negative values
2498 for the mailbox size or file count. Odd effects could occur as a result.
2499 The maildirsize information is now recalculated if the size or filecount
2500 end up negative.
2501
250217. Added HAVE_SYS_STATVFS_H to the os.h file for Linux, as it has had this
2503 support for a long time. Removed HAVE_SYS_VFS_H.
2504
ea3a6f44 250518. Updated exipick to current release from John Jetmore.
bbe902f0
PH
2506
250719. Allow an empty sender to be matched against a lookup in an address list.
2508 Previously the only cases considered were a regular expression, or an
2509 empty pattern.
2510
251120. Exim went into a mad DNS lookup loop when doing a callout where the
2512 host was specified on the transport, if the DNS lookup yielded more than
2513 one IP address.
2514
ea3a6f44
NM
251521. The RFC2047 encoding function was originally intended for short strings
2516 such as real names; it was not keeping to the 75-character limit for
2517 encoded words that the RFC imposes. It now respects the limit, and
2518 generates multiple encoded words if necessary. To be on the safe side, I
2519 have increased the buffer size for the ${rfc2047: expansion operator from
2520 1024 to 2048 bytes.
bbe902f0 2521
ea3a6f44
NM
252222. Failure to deliver a bounce message always caused it to be frozen, even if
2523 there was an errors_to setting on the router. The errors_to setting is now
2524 respected.
bbe902f0
PH
2525
252623. If an IPv6 address is given for -bh or -bhc, it is now converted to the
2527 canonical form (fully expanded) before being placed in
2528 $sender_host_address.
2529
253024. Updated eximstats to version 1.33
2531
ea3a6f44
NM
253225. Include certificate and key file names in error message when GnuTLS fails
2533 to set them up, because the GnuTLS error message doesn't include the name
2534 of the failing file when there is a problem reading it.
bbe902f0
PH
2535
253626. Expand error message when OpenSSL has problems setting up cert/key files.
ea3a6f44 2537 As per change 25.
bbe902f0 2538
ea3a6f44
NM
253927. Reset the locale to "C" after calling embedded Perl, in case it was changed
2540 (this can affect the format of dates).
bbe902f0 2541
ea3a6f44
NM
254228. exim_tidydb, when checking for the continued existence of a message for
2543 which it has found a message-specific retry record, was not finding
2544 messages that were in split spool directories. Consequently, it was
2545 deleting retry records that should have stayed in existence.
bbe902f0
PH
2546
254729. eximstats updated to version 1.35
2548 1.34 - allow eximstats to parse syslog lines as well as mainlog lines
2549 1.35 - bugfix such that pie charts by volume are generated correctly
2550
ea3a6f44
NM
255130. The SPA authentication driver was not abandoning authentication and moving
2552 on to the next authenticator when an expansion was forced to fail,
2553 contradicting the general specification for all authenticators. Instead it
2554 was generating a temporary error. It now behaves as specified.
bbe902f0 2555
ea3a6f44
NM
255631. The default ordering of permitted cipher suites for GnuTLS was pessimal
2557 (the order specifies the preference for clients). The order is now AES256,
2558 AES128, 3DES, ARCFOUR128.
bbe902f0 2559
ea3a6f44
NM
256031. Small patch to Sieve code - explicitly set From: when generating an
2561 autoreply.
bbe902f0 2562
ea3a6f44
NM
256332. Exim crashed if a remote delivery caused a very long error message to be
2564 recorded - for instance if somebody sent an entire SpamAssassin report back
2565 as a large number of 550 error lines. This bug was coincidentally fixed by
2566 increasing the size of one of Exim's internal buffers (big_buffer) that
2567 happened as part of the Exiscan merge. However, to be on the safe side, I
2568 have made the code more robust (and fixed the comments that describe what
2569 is going on).
bbe902f0 2570
ea3a6f44
NM
257133. Some experimental protocols are using DNS PTR records for new purposes. The
2572 keys for these records are domain names, not reversed IP addresses. The
2573 dnsdb PTR lookup now tests whether its key is an IP address. If not, it
2574 leaves it alone. Component reversal etc. now happens only for IP addresses.
bbe902f0
PH
2575 CAN-2005-0021
2576
ea3a6f44
NM
257734. The host_aton() function is supposed to be passed a string that is known
2578 to be a valid IP address. However, in the case of IPv6 addresses, it was
2579 not checking this. This is a hostage to fortune. Exim now panics and dies
2580 if the condition is not met. A case was found where this could be provoked
2581 from a dnsdb PTR lookup with an IPv6 address that had more than 8
2582 components; fortuitously, this particular loophole had already been fixed
2583 by change 4.50/55 or 4.44/33 above.
2584
2585 If there are any other similar loopholes, the new check in host_aton()
2586 itself should stop them being exploited. The report I received stated that
2587 data on the command line could provoke the exploit when Exim was running as
2588 exim, but did not say which command line option was involved. All I could
2589 find was the use of -be with a bad dnsdb PTR lookup, and in that case it is
2590 running as the user.
bbe902f0
PH
2591 CAN-2005-0021
2592
ea3a6f44
NM
259335. There was a buffer overflow vulnerability in the SPA authentication code
2594 (which came originally from the Samba project). I have added a test to the
2595 spa_base64_to_bits() function which I hope fixes it.
bbe902f0
PH
2596 CAN-2005-0022
2597
ea3a6f44
NM
259836. The daemon start-up calls getloadavg() while still root for those OS that
2599 need the first call to be done as root, but it missed one case: when
2600 deliver_queue_load_max is set with deliver_drop_privilege. This is
2601 necessary for the benefit of the queue runner, because there is no re-exec
2602 when deliver_drop_privilege is set.
bbe902f0 2603
ea3a6f44
NM
260437. Caching of lookup data for "hosts =" ACL conditions, when a named host list
2605 was in use, was not putting the data itself into the right store pool;
2606 consequently, it could be overwritten for a subsequent message in the same
2607 SMTP connection. (Fix 4.40/11 dealt with the non-cache case, but overlooked
2608 the caching.)
bbe902f0 2609
ea3a6f44
NM
261038. Sometimes the final signoff response after QUIT could fail to get
2611 transmitted in the non-TLS case. Testing !tls_active instead of tls_active
2612 < 0 before doing a fflush(). This bug looks as though it goes back to the
2613 introduction of TLS in release 3.20, but "sometimes" must have been rare
2614 because the tests only now provoked it.
bbe902f0
PH
2615
2616
495ae4b0
PH
2617Exim version 4.43
2618-----------------
2619
2620 1. Fixed a longstanding but relatively impotent bug: a long time ago, before
2621 PIPELINING, the function smtp_write_command() used to return TRUE or FALSE.
2622 Now it returns an integer. A number of calls were still expecting a T/F
2623 return. Fortuitously, in all cases, the tests worked in OK situations,
2624 which is the norm. However, things would have gone wrong on any write
2625 failures on the smtp file descriptor. This function is used when sending
2626 messages over SMTP and also when doing verify callouts.
2627
2628 2. When Exim is called to do synchronous delivery of a locally submitted
2629 message (the -odf or -odi options), it no longer closes stderr before doing
2630 the delivery.
2631
2632 3. Implemented the mua_wrapper option.
2633
2634 4. Implemented mx_fail_domains and srv_fail_domains for the dnslookup router.
2635
2636 5. Implemented the functions header_remove(), header_testname(),
2637 header_add_at_position(), and receive_remove_recipient(), and exported them
2638 to local_scan().
2639
2640 6. If an ACL "warn" statement specified the addition of headers, Exim already
2641 inserted X-ACL-Warn: at the start if there was no header name. However, it
2642 was not making this test for the second and subsequent header lines if
2643 there were newlines in the string. This meant that an invalid header could
2644 be inserted if Exim was badly configured.
2645
2646 7. Allow an ACL "warn" statement to add header lines at the start or after all
2647 the Received: headers, as well as at the end.
2648
2649 8. Added the rcpt_4xx retry error code.
2650
2651 9. Added postmaster_mailfrom=xxx to callout verification option.
2652
265310. Added mailfrom=xxxx to the callout verification option, for verify=
2654 header_sender only.
2655
265611. ${substr_1_:xxxx} and ${substr__3:xxxx} are now diagnosed as syntax errors
2657 (they previously behaved as ${substr_1_0:xxxx} and ${substr:_0_3:xxxx}).
2658
265912. Inserted some casts to stop certain compilers warning when using pointer
2660 differences as field lengths or precisions in printf-type calls (mostly
2661 affecting debugging statements).
2662
266313. Added optional readline() support for -be (dynamically loaded).
2664
266514. Obscure bug fix: if a message error (e.g. 4xx to MAIL) happened within the
2666 same clock tick as a message's arrival, so that its received time was the
2667 same as the "first fail" time on the retry record, and that message
2668 remained on the queue past the ultimate address timeout, every queue runner
2669 would try a delivery (because it was past the ultimate address timeout) but
2670 after another failure, the ultimate address timeout, which should have then
2671 bounced the address, did not kick in. This was a "< instead of <=" error;
2672 in most cases the first failure would have been in the next clock tick
2673 after the received time, and all would be well.
2674
267515. The special items beginning with @ in domain lists (e.g. @mx_any) were not
2676 being recognized when the domain list was tested by the match_domain
2677 condition in an expansion string.
2678
267916. Added the ${str2b64: operator.
2680
268117. Exim was always calling setrlimit() to set a large limit for the number of
2682 processes, without checking whether the existing limit was already
2683 adequate. (It did check for the limit on file descriptors.) Furthermore,
2684 errors from getrlimit() and setrlimit() were being ignored. Now they are
2685 logged to the main and panic logs, but Exim does carry on, to try to do its
2686 job under whatever limits there are.
2687
268818. Imported PCRE 5.0.
2689
269019. Trivial typo in log message " temporarily refused connection" (the leading
2691 space).
2692
269320. If the log selector return_path_on_delivery was set and an address was
2694 redirected to /dev/null, the delivery process crashed because it assumed
2695 that a return path would always be set for a "successful" delivery. In this
2696 case, the whole delivery is bypassed as an optimization, and therefore no
2697 return path is set.
2698
269921. Internal re-arrangement: the function for sending a challenge and reading
2700 a response while authentication was assuming a zero-terminated challenge
2701 string. It's now changed to take a pointer and a length, to allow for
2702 binary data in such strings.
2703
270422. Added the cyrus_sasl authenticator (code supplied by MBM).
2705
270623. Exim was not respecting finduser_retries when seeking the login of the
2707 uid under which it was called; it was always trying 10 times. (The default
2708 setting of finduser_retries is zero.) Also, it was sleeping after the final
2709 failure, which is pointless.
2710
271124. Implemented tls_on_connect_ports.
2712
271325. Implemented acl_smtp_predata.
2714
271526. If the domain in control=submission is set empty, Exim assumes that the
2716 authenticated id is a complete email address when it generates From: or
2717 Sender: header lines.
2718
271927. Added "#define SOCKLEN_T int" to OS/os.h-SCO and OS/os.h-SCO_SV. Also added
2720 definitions to OS/Makefile-SCO and OS/Makefile-SCO_SV that put basename,
2721 chown and chgrp in /bin and hostname in /usr/bin.
2722
272328. Exim was keeping the "process log" file open after each use, just as it
2724 does for the main log. This opens the possibility of it remaining open for
2725 long periods when the USR1 signal hits a daemon. Occasional processlog
2726 errors were reported, that could have been caused by this. Anyway, it seems
2727 much more sensible not to leave this file open at all, so that is what now
2728 happens.
2729
273029. The long-running daemon process does not normally write to the log once it
2731 has entered its main loop, and it closes the log before doing so. This is
2732 so that log files can straightforwardly be renamed and moved. However,
2733 there are a couple of unusual error situations where the daemon does write
2734 log entries, and I had neglected to close the log afterwards.
2735
273630. The text of an SMTP error response that was received during a remote
2737 delivery was being truncated at 512 bytes. This is too short for some of
2738 the long messages that one sometimes sees. I've increased the limit to
2739 1024.
2740
274131. It is now possible to make retry rules that apply only when a message has a
2742 specific sender, in particular, an empty sender.
2743
274432. Added "control = enforce_sync" and "control = no_enforce_sync". This makes
2745 it possible to be selective about when SMTP synchronization is enforced.
2746
274733. Added "control = caseful_local_part" and "control = "caselower_local_part".
2748
274932. Implemented hosts_connection_nolog.
2750
275133. Added an ACL for QUIT.
2752
275334. Setting "delay_warning=" to disable warnings was not working; it gave a
2754 syntax error.
2755
275635. Added mailbox_size and mailbox_filecount to appendfile.
2757
275836. Added control = no_multiline_responses to ACLs.
2759
276037. There was a bug in the logic of the code that waits for the clock to tick
2761 in the case where the clock went backwards by a substantial amount such
2762 that the microsecond fraction of "now" was more than the microsecond
2763 fraction of "then" (but the whole seconds number was less).
2764
276538. Added support for the libradius Radius client library this is found on
2766 FreeBSD (previously only the radiusclient library was supported).
2767
2768
2769Exim version 4.42
2770-----------------
2771
2772 1. When certain lookups returned multiple values in the form name=value, the
2773 quoting of the values was not always being done properly. Specifically:
2774 (a) If the value started with a double quote, but contained no whitespace,
2775 it was not quoted.
2776 (b) If the value contained whitespace other than a space character (i.e.
2777 tabs or newlines or carriage returns) it was not quoted.
2778 This fix has been applied to the mysql and pgsql lookups by writing a
2779 separate quoting function and calling it from the lookup code. The fix
2780 should probably also be applied to nisplus, ibase and oracle lookups, but
2781 since I cannot test any of those, I have not disturbed their existing code.
2782
2783 2. A hit in the callout cache for a specific address caused a log line with no
2784 reason for rejecting RCPT. Now it says "Previous (cached) callout
2785 verification failure".
2786
2787 3. There was an off-by-one bug in the queryprogram router. An over-long
2788 return line was truncated at 256 instead of 255 characters, thereby
2789 overflowing its buffer with the terminating zero. As well as fixing this, I
2790 have increased the buffer size to 1024 (and made a note to document this).
2791
2792 4. If an interrupt, such as the USR1 signal that is send by exiwhat, arrives
2793 when Exim is waiting for an SMTP response from a remote server, Exim
2794 restarts its select() call on the socket, thereby resetting its timeout.
2795 This is not a problem when such interrupts are rare. Somebody set up a cron
2796 job to run exiwhat every 2 minutes, which is less than the normal select()
2797 timeout (5 or 10 minutes). This meant that the select() timeout never
2798 kicked in because it was always reset. I have fixed this by comparing the
2799 time when an interrupt arrives with the time at the start of the first call
2800 to select(). If more time than the timeout has elapsed, the interrupt is
2801 treated as a timeout.
2802
2803 5. Some internal re-factoring in preparation for the addition of Sieve
2804 extensions (by MH). In particular, the "personal" test is moved to a
2805 separate function, and given an option for scanning Cc: and Bcc: (which is
2806 not set for Exim filters).
2807
2808 6. When Exim created an email address using the login of the caller as the
2809 local part (e.g. when creating a From: or Sender: header line), it was not
2810 quoting the local part when it contained special characters such as @.
2811
2812 7. Installed new OpenBSD configuration files.
2813
2814 8. Reworded some messages for syntax errors in "and" and "or" conditions to
2815 try to make them clearer.
2816
2817 9. Callout options, other than the timeout value, were being ignored when
2818 verifying sender addresses in header lines. For example, when using
2819
2820 verify = header_sender/callout=no_cache
2821
2822 the cache was (incorrectly) being used.
2823
282410. Added a missing instance of ${EXE} to the exim_install script; this affects
2825 only the Cygwin environment.
2826
282711. When return_path_on_delivery was set as a log selector, if different remote
2828 addresses in the same message used different return paths and parallel
2829 remote delivery occurred, the wrong values would sometimes be logged.
2830 (Whenever a remote delivery process finished, the return path value from
2831 the most recently started remote delivery process was logged.)
2832
283312. RFC 3848 specifies standard names for the "with" phrase in Received: header
2834 lines when AUTH and/or TLS are in use. This is the "received protocol"
2835 field. Exim used to use "asmtp" for authenticated SMTP, without any
2836 indication (in the protocol name) for TLS use. Now it follows the RFC and
2837 uses "esmtpa" if the connection is authenticated, "esmtps" if it is
2838 encrypted, and "esmtpsa" if it is both encrypted and authenticated. These
2839 names appear in log lines as well as in Received: header lines.
2840
284113. Installed MH's patches for Sieve to add the "copy" and "vacation"
2842 extensions, and comparison tests, and to fix some bugs.
2843
284414. Changes to the "personal" filter test:
2845
2846 (1) The test was buggy in that it was just doing the equivalent of
2847 "contains" tests on header lines. For example, if a user's address was
2848 anne@some.where, the "personal" test would incorrectly be true for
2849
2850 To: susanne@some.where
2851
2852 This test is now done by extracting each address from the header in turn,
2853 and checking the entire address. Other tests that are part of "personal"
2854 are now done using regular expressions (for example, to check local parts
2855 of addresses in From: header lines).
2856
2857 (2) The list of non-personal local parts in From: addresses has been
2858 extended to include "listserv", "majordomo", "*-request", and "owner-*",
2859 taken from the Sieve specification recommendations.
2860
2861 (3) If the message contains any header line starting with "List-" it is
2862 treated as non-personal.
2863
2864 (4) The test for "circular" in the Subject: header line has been removed
2865 because it now seems ill-conceived.
2866
286715. Minor typos in src/EDITME comments corrected.
2868
286916. Installed latest exipick from John Jetmore.
2870
287117. If headers_add on a router specified a text string that was too long for
2872 string_sprintf() - that is, longer than 8192 bytes - Exim panicked. The use
2873 of string_sprintf() is now avoided.
2874
287518. $message_body_size was not set (it was always zero) when running the DATA
2876 ACL and the local_scan() function.
2877
287819. For the "mail" command in an Exim filter, no default was being set for
2879 the once_repeat time, causing a random time value to be used if "once" was
2880 specified. (If the value happened to be <= 0, no repeat happened.) The
2881 default is now 0s, meaning "never repeat". The "vacation" command was OK
2882 (its default is 7d). It's somewhat surprising nobody ever noticed this bug
2883 (I found it when inspecting the code).
2884
288520. There is now an overall timeout for performing a callout verification. It
2886 defaults to 4 times the callout timeout, which applies to individual SMTP
2887 commands during the callout. The overall timeout applies when there is more
2888 than one host that can be tried. The timeout is checked before trying the
2889 next host. This prevents very long delays if there are a large number of
2890 hosts and all are timing out (e.g. when the network connections are timing
2891 out). The value of the overall timeout can be changed by specifying an
2892 additional sub-option for "callout", called "maxwait". For example:
2893
2894 verify = sender/callout=5s,maxwait=20s
2895
289621. Add O_APPEND to the open() call for maildirsize files (Exim already seeks
2897 to the end before writing, but this should make it even safer).
2898
289922. Exim was forgetting that it had advertised PIPELINING for the second and
2900 subsequent messages on an SMTP connection. It was also not resetting its
2901 memory on STARTTLS and an internal HELO.
2902
290323. When Exim logs an SMTP synchronization error within a session, it now
2904 records whether PIPELINING has been advertised or not.
2905
290624. Added 3 instances of "(long int)" casts to time_t variables that were being
2907 formatted using %ld, because on OpenBSD (and perhaps others), time_t is int
2908 rather than long int.
2909
291025. Installed the latest Cygwin configuration files from the Cygwin maintainer.
2911
291226. Added the never_mail option to autoreply.
2913
2914
2915Exim version 4.41
2916-----------------
2917
2918 1. A reorganization of the code in order to implement 4.40/8 caused a daemon
2919 crash if the getsockname() call failed; this can happen if a connection is
2920 closed very soon after it is established. The problem was simply in the
2921 order in which certain operations were done, causing Exim to try to write
2922 to the SMTP stream before it had set up the file descriptor. The bug has
2923 been fixed by making things happen in the correct order.
2924
2925
2926Exim version 4.40
2927-----------------
2928
2929 1. If "drop" was used in a DATA ACL, the SMTP output buffer was not flushed
2930 before the connection was closed, thus losing the rejection response.
2931
2932 2. Commented out the definition of SOCKLEN_T in os.h-SunOS5. It is needed for
2933 some early Solaris releases, but causes trouble in current releases where
2934 socklen_t is defined.
2935
2936 3. When std{in,out,err} are closed, re-open them to /dev/null so that they
2937 always exist.
2938
2939 4. Minor refactoring of os.c-Linux to avoid compiler warning when IPv6 is not
2940 configured.
2941
2942 5. Refactoring in expand.c to improve memory usage. Pre-allocate a block so
2943 that releasing the top of it at the end releases what was used for sub-
2944 expansions (unless the block got too big). However, discard this block if
2945 the first thing is a variable or header, so that we can use its block when
2946 it is dynamic (useful for very large $message_headers, for example).
2947
2948 6. Lookups now cache *every* query, not just the most recent. A new, separate
2949 store pool is used for this. It can be recovered when all lookup caches are
2950 flushed. Lookups now release memory at the end of their result strings.
2951 This has involved some general refactoring of the lookup sources.
2952
2953 7. Some code has been added to the store_xxx() functions to reduce the amount
2954 of flapping under certain conditions.
2955
2956 8. log_incoming_interface used to affect only the <= reception log lines. Now
2957 it causes the local interface and port to be added to several more SMTP log
2958 lines, for example "SMTP connection from", and rejection lines.
2959
2960 9. The Sieve author supplied some patches for the doc/README.SIEVE file.
2961
296210. Added a conditional definition of _BSD_SOCKLEN_T to os.h-Darwin.
2963
296411. If $host_data was set by virtue of a hosts lookup in an ACL, its value
2965 could be overwritten at the end of the current message (or the start of a
2966 new message if it was set in a HELO ACL). The value is now preserved for
2967 the duration of the SMTP connection.
2968
296912. If a transport had a headers_rewrite setting, and a matching header line
2970 contained an unqualified address, that address was qualified, even if it
2971 did not match any rewriting rules. The underlying bug was that the values
2972 of the flags that permit the existence of unqualified sender and recipient
2973 addresses in header lines (set by {sender,recipient}_unqualified_hosts for
2974 non-local messages, and by -bnq for local messages) were not being
2975 preserved with the message after it was received.
2976
297713. When Exim was logging an SMTP synchronization error, it could sometimes log
2978 "next input=" as part of the text comprising the host identity instead of
2979 the correct text. The code was using the same buffer for two different
2980 strings. However, depending on which order the printing function evaluated
2981 its arguments, the bug did not always show up. Under Linux, for example, my
2982 test suite worked just fine.
2983
298414. Exigrep contained a use of Perl's "our" scoping after change 4.31/70. This
2985 doesn't work with some older versions of Perl. It has been changed to "my",
2986 which in any case is probably the better facility to use.
2987
298815. A really picky compiler found some instances of statements for creating
2989 error messages that either had too many or two few arguments for the format
2990 string.
2991
299216. The size of the buffer for calls to the DNS resolver has been increased
2993 from 1024 to 2048. A larger buffer is needed when performing PTR lookups
2994 for addresses that have a lot of PTR records. This alleviates a problem; it
2995 does not fully solve it.
2996
299717. A dnsdb lookup for PTR records that receives more data than will fit in the
2998 buffer now truncates the list and logs the incident, which is the same
2999 action as happens when Exim is looking up a host name and its aliases.
3000 Previously in this situation something unpredictable would happen;
3001 sometimes it was "internal error: store_reset failed".
3002
300318. If a server dropped the connection unexpectedly when an Exim client was
3004 using GnuTLS and trying to read a response, the client delivery process
3005 crashed while trying to generate an error log message.
3006
300719. If a "warn" verb in an ACL added multiple headers to a message in a single
3008 string, for example:
3009
3010 warn message = H1: something\nH2: something
3011
3012 the text was added as a single header line from Exim's point of view
3013 though it ended up OK in the delivered message. However, searching for the
3014 second and subsequent header lines using $h_h2: did not work. This has been
3015 fixed. Similarly, if a system filter added multiple headers in this way,
3016 the routers could not see them.
3017
301820. Expanded the error message when iplsearch is called with an invalid key to
3019 suggest using net-iplsearch in a host list.
3020
302121. When running tests using -bh, any delays imposed by "delay" modifiers in
3022 ACLs are no longer actually imposed (and a message to that effect is
3023 output).
3024
302522. If a "gecos" field in a passwd entry contained escaped characters, in
3026 particular, if it contained a \" sequence, Exim got it wrong when building
3027 a From: or a Sender: header from that name. A second bug also caused
3028 incorrect handling when an unquoted " was present following a character
3029 that needed quoting.
3030
303123. "{crypt}" as a password encryption mechanism for a "crypteq" expansion item
3032 was not being matched caselessly.
3033
303424. Arranged for all hyphens in the exim.8 source to be escaped with
3035 backslashes.
3036
303725. Change 16 of 4.32, which reversed 71 or 4.31 didn't quite do the job
3038 properly. Recipient callout cache records were still being keyed to include
3039 the sender, even when use_sender was set false. This led to far more
3040 callouts that were necessary. The sender is no longer included in the key
3041 when use_sender is false.
3042
304326. Added "control = submission" modifier to ACLs.
3044
304527. Added the ${base62d: operator to decode base 62 numbers.
3046
304728. dnsdb lookups can now access SRV records.
3048
304929. CONFIGURE_OWNER can be set at build time to define an alternative owner for
3050 the configuration file.
3051
305230. The debug message "delivering xxxxxx-xxxxxx-xx" is now output in verbose
3053 (-v) mode. This makes the output for a verbose queue run more intelligible.
3054
305531. Added a use_postmaster feature to recipient callouts.
3056
305732. Added the $body_zerocount variable, containing the number of binary zero
3058 bytes in the message body.
3059
306033. The time of last modification of the "new" subdirectory is now used as the
3061 "mailbox time last read" when there is a quota error for a maildir
3062 delivery.
3063
306434. Added string comparison operators lt, lti, le, lei, gt, gti, ge, gei.
3065
306635. Added +ignore_unknown as a special item in host lists.
3067
306836. Code for decoding IPv6 addresses in host lists is now included, even if
3069 IPv6 support is not being compiled. This fixes a bug in which an IPv6
3070 address was recognized as an IP address, but was then not correctly decoded
3071 into binary, causing unexpected and incorrect effects when compared with
3072 another IP address.
3073
3074
3075Exim version 4.34
3076-----------------
3077
3078 1. Very minor rewording of debugging text in manualroute to say "list of
3079 hosts" instead of "hostlist".
3080
3081 2. If verify=header_syntax was set, and a header line with an unqualified
3082 address (no domain) and a large number of spaces between the end of the
3083 name and the colon was received, the reception process suffered a buffer
3084 overflow, and (when I tested it) crashed. This was caused by some obsolete
3085 code that should have been removed. The fix is to remove it!
3086
3087 3. When running in the test harness, delay a bit after writing a bounce
3088 message to get a bit more predictability in the log output.
3089
3090 4. Added a call to search_tidyup() just before forking a reception process. In
3091 theory, someone could use a lookup in the expansion of smtp_accept_max_
3092 per_host which, without the tidyup, could leave open a database connection.
3093
3094 5. Added the variables $recipient_data and $sender_data which get set from a
3095 lookup success in an ACL "recipients" or "senders" condition, or a router
3096 "senders" option, similar to $domain_data and $local_part_data.
3097
3098 6. Moved the writing of debug_print from before to after the "senders" test
3099 for routers.
3100
3101 7. Change 4.31/66 (moving the time when the Received: is generated) caused
3102 problems for message scanning, either using a data ACL, or using
3103 local_scan() because the Received: header was not generated till after they
3104 were called (in order to set the time as the time of reception completion).
3105 I have revised the way this works. The header is now generated after the
3106 body is received, but before the ACL or local_scan() are called. After they
3107 are run, the timestamp in the header is updated.
3108
3109
3110Exim version 4.33
3111-----------------
3112
3113 1. Change 4.24/6 introduced a bug because the SIGALRM handler was disabled
3114 before starting a queue runner without re-exec. This happened only when
3115 deliver_drop_privilege was set or when the Exim user was set to root. The
3116 effect of the bug was that timeouts during subsequent deliveries caused
3117 crashes instead of being properly handled. The handler is now left at its
3118 default (and expected) setting.
3119
3120 2. The other case in which a daemon avoids a re-exec is to deliver an incoming
3121 message, again when deliver_drop_privilege is set or Exim is run as root.
3122 The bug described in (1) was not present in this case, but the tidying up
3123 of the other signals was missing. I have made the two cases consistent.
3124
3125 3. The ignore_target_hosts setting on a manualroute router was being ignored
3126 for hosts that were looked up using the /MX notation.
3127
3128 4. Added /ignore=<ip list> feature to @mx_any, @mx_primary, and @mx_secondary
3129 in domain lists.
3130
3131 5. Change 4.31/55 was buggy, and broke when there was a rewriting rule that
3132 operated on the sender address. After changing the $sender_address to <>
3133 for the sender address verify, Exim was re-instated it as the original
3134 (before rewriting) address, but remembering that it had rewritten it, so it
3135 wasn't rewriting it again. This bug also had the effect of breaking the
3136 sender address verification caching when the sender address was rewritten.
3137
3138 6. The ignore_target_hosts option was being ignored by the ipliteral router.
3139 This has been changed so that if the ip literal address matches
3140 ignore_target_hosts, the router declines.
3141
3142 7. Added expansion conditions match_domain, match_address, and match_local_
3143 part (NOT match_host).
3144
3145 8. The placeholder for the Received: header didn't have a length field set.
3146
3147 9. Added code to Exim itself and to exim_lock to test for a specific race
3148 condition that could lead to file corruption when using MBX delivery. The
3149 issue is with the lockfile that is created in /tmp. If this file is removed
3150 after a process has opened it but before that process has acquired a lock,
3151 there is the potential for a second process to recreate the file and also
3152 acquire a lock. This could lead to two Exim processes writing to the file
3153 at the same time. The added code performs the same test as UW imapd; it
3154 checks after acquiring the lock that its file descriptor still refers to
3155 the same named file.
3156
315710. The buffer for building added header lines was of fixed size, 8192 bytes.
3158 It is now parameterized by HEADER_ADD_BUFFER_SIZE and this can be adjusted
3159 when Exim is built.
3160
316111. Added the smtp_active_hostname option. If used, this will typically be made
3162 to depend on the incoming interface address. Because $interface_address is
3163 not set up until the daemon has forked a reception process, error responses
3164 that can happen earlier (such as "too many connections") no longer contain
3165 a host name.
3166
316712. If an expansion in a condition on a "warn" statement fails because a lookup
3168 defers, the "warn" statement is abandoned, and the next ACL statement is
3169 processed. Previously this caused the whole ACL to be aborted.
3170
317113. Added the iplsearch lookup type.
3172
317314. Added ident_timeout as a log selector.
3174
317515. Added tls_certificate_verified as a log selector.
3176
317716. Added a global option tls_require_ciphers (compare the smtp transport
3178 option of the same name). This controls incoming TLS connections.
3179
318017. I finally figured out how to make tls_require_ciphers do a similar thing
3181 in GNUtls to what it does in OpenSSL, that is, set up an appropriate list
3182 before starting the TLS session.
3183
318418. Tabs are now shown as \t in -bP output.
3185
318619. If the log selector return_path_on_delivery was set, Exim crashed when
3187 bouncing a message because it had too many Received: header lines.
3188
318920. If two routers both had headers_remove settings, and the first one included
3190 a superfluous trailing colon, the final name in the first list and the
3191 first name in the second list were incorrectly joined into one item (with a
3192 colon in the middle).
3193
3194
3195Exim version 4.32
3196-----------------
3197
3198 1. Added -C and -D options to the exinext utility, mainly to make it easier
3199 to include in the automated testing, but these could be helpful when
3200 multiple configurations are in use.
3201
3202 2. The exinext utility was not formatting the output nicely when there was
3203 an alternate port involved in the retry record key, nor when there was a
3204 message id as well (for retries that were specific to a specific message
3205 and a specific host). It was also confused by IPv6 addresses, because of
3206 the additional colons they contain. I have fixed the IPv4 problem, and
3207 patched it up to do a reasonable job for IPv6.
3208
3209 3. When there is an error after a MAIL, RCPT, or DATA SMTP command during
3210 delivery, the log line now contains "pipelined" if PIPELINING was used.
3211
3212 4. An SMTP transport process used to panic and die if the bind() call to set
3213 an explicit outgoing interface failed. This has been changed; it is now
3214 treated in the same way as a connect() failure.
3215
3216 5. A reference to $sender_host_name in the part of a conditional expansion
3217 that was being skipped was still causing a DNS lookup. This no longer
3218 occurs.
3219
3220 6. The def: expansion condition was not recognizing references to header lines
3221 that used bh_ and bheader_.
3222
3223 7. Added the _cache feature to named lists.
3224
3225 8. The code for checking quota_filecount in the appendfile transport was
3226 allowing one more file than it should have been.
3227
3228 9. For compatibility with Sendmail, the command line option
3229
3230 -prval:sval
3231
3232 is equivalent to
3233
3234 -oMr rval -oMs sval
3235
3236 and sets the incoming protocol and host name (for trusted callers). The
3237 host name and its colon can be omitted when only the protocol is to be set.
3238 Note the Exim already has two private options, -pd and -ps, that refer to
3239 embedded Perl. It is therefore impossible to set a protocol value of "d" or
3240 "s", but I don't think that's a major issue.
3241
324210. A number of refactoring changes to the code, none of which should affect
3243 Exim's behaviour:
3244
3245 (a) The number of logging options was getting close to filling up the
3246 32-bit word that was used as a bit map. I have split them into two classes:
3247 those that are passed in the argument to log_write(), and those that are
3248 only ever tested independently outside of that function. These are now in
3249 separate 32-bit words, so there is plenty of room for expansion again.
3250 There is no change in the user interface or the logging behaviour.
3251
3252 (b) When building, for example, log lines, the code previously used a
3253 macro that called string_cat() twice, in order to add two strings. This is
3254 not really sufficiently general. Furthermore, there was one instance where
3255 it was actually wrong because one of the argument was used twice, and in
3256 one call a function was used. (As it happened, calling the function twice
3257 did not affect the overall behaviour.) The macro has been replaced by a
3258 function that can join an arbitrary number of extra strings onto a growing
3259 string.
3260
3261 (c) The code for expansion conditions now uses a table and a binary chop
3262 instead of a serial search (which was left over from when there were very
3263 few conditions). Also, it now recognizes conditions like "pam" even when
3264 the relevant support is not compiled in: a suitably worded error message is
3265 given if an attempt is made to use such a condition.
3266
326711. Added ${time_interval:xxxxx}.
3268
326912. A bug was causing one of the ddress fields not to be passed back correctly
3270 from remote delivery subprocesses. The field in question was not being
3271 subsequently used, so this caused to problems in practice.
3272
327313. Added new log selectors queue_time and deliver_time.
3274
327514. Might have fixed a bug in maildirsizefile handling that threw up
3276 "unexpected character" debug warnings, and recalculated the data
3277 unnecessarily. In any case, I expanded the warning message to give more
3278 information.
3279
328015. Added the message "Restricted characters in address" to the statements in
3281 the default ACL that block characters like @ and % in local parts.
3282
328316. Change 71 for release 4.31 proved to be much less benign that I imagined.
3284 Three changes have been made:
3285
3286 (a) There was a serious bug; a negative response to MAIL caused the whole
3287 recipient domain to be cached as invalid, thereby blocking all messages
3288 to all local parts at the same domain, from all senders. This bug has
3289 been fixed. The domain is no longer cached after a negative response to
3290 MAIL if the sender used is not empty.
3291
3292 (b) The default behaviour of using MAIL FROM:<> for recipient callouts has
3293 been restored.
3294
3295 (c) A new callout option, "use_sender" has been added for people who want
3296 the modified behaviour.
3297
3298
3299Exim version 4.31
3300-----------------
3301
3302 1. Removed "EXTRALIBS=-lwrap" from OS/Makefile-Unixware7 on the advice of
3303 Larry Rosenman.
3304
3305 2. Removed "LIBS = -lresolv" from OS/Makefile-Darwin as it is not needed, and
3306 indeed breaks things for older releases.
3307
3308 3. Added additional logging to the case where there is a problem reading data
3309 from a filter that is running in a subprocess using a pipe, in order to
3310 try to track down a specific problem.
3311
3312 4. Testing facility fudge: when running in the test harness and attempting
3313 to connect to 10.x.x.x (expecting a connection timeout) I'm now sometimes
3314 getting "No route to host". Convert this to a timeout.
3315
3316 5. Define ICONV_ARG2_TYPE as "char **" for Unixware7 to avoid compiler
3317 warning.
3318
3319 6. Some OS don't have socklen_t but use size_t instead. This affects the
3320 fifth argument of getsockopt() amongst other things. This is now
3321 configurable by a macro called SOCKLEN_T which defaults to socklen_t, but
3322 can be set for individual OS. I have set it for SunOS5, OSF1, and
3323 Unixware7. Current versions of SunOS5 (aka Solaris) do have socklen_t, but
3324 some earlier ones do not.
3325
3326 7. Change 4.30/15 was not doing the test caselessly.
3327
3328 8. The standard form for an IPv6 address literal was being rejected by address
3329 parsing in, for example, MAIL and RCPT commands. An example of this kind of
3330 address is [IPv6:2002:c1ed:8229:10:202:2dff:fe07:a42a]. Exim now accepts
3331 this, as well as the form without the "IPv6" on the front (but only when
3332 address literals are enabled, of course).
3333
3334 9. Added some casts to avoid compiler warnings in OS/os.c-Linux.
3335
333610. Exim crashed if a message with an empty sender address specified by -f
3337 encountered a router with an errors_to setting. This could be provoked only
3338 by a command such as
3339
3340 exim -f "" ...
3341
3342 where an empty string was supplied; "<>" did not hit this bug.
3343
334411. Installed PCRE release 4.5.
3345
334612. If EHLO/HELO was rejected by an ACL, the value of $sender_helo_name
3347 remained set. It is now erased.
3348
334913. exiqgrep wasn't working on MacOS X because it didn't correctly compute
3350 times from message ids (which are base 36 rather than the normal 62).
3351
335214. "Expected" SMTP protocol errors that can arise when PIPELINING is in use
3353 were being counted as actual protocol errors, and logged if the log
3354 selector +smtp_protocol_error was set. One cannot be perfect in this test,
3355 but now, if PIPELINING has been advertised, RCPT following a rejected MAIL,
3356 and DATA following a set of rejected RCPTs do not count as protocol errors.
3357 In other words, Exim assumes they were pipelined, though this may not
3358 actually be the case. Of course, in all cases the client gets an
3359 appropriate error code.
3360
336115. If a lookup fails in an ACL condition, a message about the failure may
3362 be available; it is used if testing the ACL cannot continue, because most
3363 such messages specify what the cause of the deferral is. However, some
3364 messages (e.g. "MYSQL: no data found") do not cause a defer. There was bug
3365 that caused an old message to be retained and used if a later statement
3366 caused a defer, replacing the real cause of the deferral.
3367
336816. If an IP address had so many PTR records that the DNS lookup buffer
3369 was not large enough to hold them, Exim could crash while trying to process
3370 the truncated data. It now detects and logs this case.
3371
337217. Further to 4.21/58, another change has been made: if (and only if) the
3373 first line of a message (the first header line) ends with CRLF, a bare LF
3374 in a subsequent header line has a space inserted after it, so as not to
3375 terminate the header.
3376
337718. Refactoring: tidied an ugly bit of code in appendfile that copied data
3378 unnecessarily, used atoi() instead of strtol(), and didn't check the
3379 termination when getting file sizes from file names by regex.
3380
338119. Completely re-implemented the support for maildirsize files, in the light
3382 of a number of problems with the previous contributed implementation
3383 (4.30/29). In particular:
3384
3385 . If the quota is zero, the maildirsize file is maintained, but no quota is
3386 imposed.
3387
3388 . If the maildir directory does not exist, it is created before any attempt
3389 to write a maildirsize file.
3390
3391 . The quota value in the file is just a cache; if the quota is changed in
3392 the transport, the new value overrides.
3393
3394 . A regular expression is available for excluding directories from the
3395 count.
3396
339720. The autoreply transport checks the characters in options that define the
3398 message's headers; it allows continued headers, but it was checking with
3399 isspace() after an embedded newline instead of explicitly looking for a
3400 space or a tab.
3401
340221. If all the "regular" hosts to which an address was routed had passed their
3403 expiry times, and had not reached their retry times, the address was
3404 bounced, even if fallback hosts were defined. Now Exim should go on to try
3405 the fallback hosts.
3406
340722. Increased buffer sizes in the callout code from 1024 to 4096 to match the
3408 equivalent code in the SMTP transport. Some hosts send humungous responses
3409 to HELO/EHLO, more than 1024 it seems.
3410
341123. Refactoring: code in filter.c used (void *) for "any old type" but this
3412 gives compiler warnings in some environments. I've now done it "properly",
3413 using a union.
3414
341524. The replacement for inet_ntoa() that is used with gcc on IRIX systems
3416 (because of problems with the built-in one) was declared to return uschar *
3417 instead of char *, causing compiler failure.
3418
341925. Fixed a file descriptor leak when processing alias/forward files.
3420
342126. Fixed a minor format string issue in dbfn.c.
3422
342327. Typo in exim.c: ("dmbnz" for "dbmnz").
3424
342528. If a filter file refered to $h_xxx or $message_headers, and the headers
3426 contained RFC 2047 "words", Exim's memory could, under certain conditions,
3427 become corrupted.
3428
342929. When a sender address is verified, it is cached, to save repeating the test
3430 when there is more than one recipient in a message. However, when the
3431 verification involves a callout, it is possible for different callout
3432 options to be set for different recipients. It is too complicated to keep
3433 track of this in the cache, so now Exim always runs a verification when a
3434 callout is required, relying on the callout cache for the optimization.
3435 The overhead is duplication of the address routing, but this should not be
3436 too great.
3437
343830. Fixed a bug in callout caching. If a RCPT command caused the sender address
3439 to be verified with callout=postmaster, and the main callout worked but the
3440 postmaster check failed, the verification correctly failed. However, if a
3441 subsequent RCPT command asked for sender verification *without* the
3442 postmaster check, incorrect caching caused this verification also to fail,
3443 incorrectly.
3444
344531. Exim caches DNS lookup failures so as to avoid multiple timeouts; however,
3446 it was not caching the DNS options (qualify_single, search_parents) that
3447 were used when the lookup failed. A subsequent lookup with different
3448 options therefore always gave the same answer, though there were cases
3449 where it should not have. (Example: a "domains = !$mx_any" option on a
3450 dnslookup router: the "domains" option is always processed without any
3451 widening, but the router might have qualify_single set.) Now Exim uses the
3452 cached value only when the same options are set.
3453
345432. Added John Jetmore's "exipick" utility to the distribution.
3455
345633. GnuTLS: When an attempt to start a TLS session fails for any reason other
3457 than a timeout (e.g. a certificate is required, and is not provided), an
3458 Exim server now closes the connection immediately. Previously it waited for
3459 the client to close - but if the client is SSL, it seems that they each
3460 wait for each other, leading to a delay before one of them times out.
3461
346234: GnuTLS: Updated the code to use the new GnuTLS 1.0.0 API. I have not
3463 maintained 0.8.x compatibility because I don't think many are using it, and
3464 it is clearly obsolete.
3465
346635. Added TLS support for CRLs: a tls_crl global option and one for the smtp
3467 transport.
3468
346936. OpenSSL: $tls_certificate_verified was being set to 1 even if the
3470 client certificate was expired. A simple patch fixes this, though I don't
3471 understand the full logic of why the verify callback is called multiple
3472 times.
3473
347437. OpenSSL: a patch from Robert Roselius: "Enable client-bug workaround.
3475 Versions of OpenSSL as of 0.9.6d include a 'CBC countermeasure' feature,
3476 which causes problems with some clients (such as the Certicom SSL Plus
3477 library used by Eudora). This option, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS,
3478 disables the coutermeasure allowing Eudora to connect."
3479
348038. Exim was not checking that a write() to a log file succeeded. This could
3481 lead to Bad Things if a log got too big, in particular if it hit a file
3482 size limit. Exim now panics and dies if it cannot write to a log file, just
3483 as it does if it cannot open a log file.
3484
348539. Modified OS/Makefile-Linux so that it now contains
3486
3487 CFLAGS=-O -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
3488
3489 The two -D definitions ensure that Exim is compiled with large file
3490 support, which makes it possible to handle log files that are bigger than
3491 2^31.
3492
349340. Fixed a subtle caching bug: if (in an ACL or a set of routers, for
3494 instance) a domain was checked against a named list that involved a lookup,
3495 causing $domain_data to be set, then another domain was checked against the
3496 same list, then the first domain was re-checked, the value of $domain_data
3497 after the final check could be wrong. In particular, if the second check
3498 failed, it could be set empty. This bug probably also applied to
3499 $localpart_data.
3500
350141. The strip_trailing_dot option was not being applied to the address given
3502 with the -f command-line option.
3503
350442. The code for reading a message's header from the spool was incrementing
3505 $received_count, but never initializing it. This meant that the value was
3506 incorrect (doubled) while delivering a message in the same process in which
3507 it was received. In the most common configuration of Exim, this never
3508 happens - a fresh exec is done - but it can happen when
3509 deliver_drop_privilege is set.
3510
351143. When Exim logs an SMTP synchronization error - client data sent too soon -
3512 it now includes up to 150 characters of the unexpected data in the log
3513 line.
3514
351544. The exim_dbmbuild utility uses fixed size buffers for reading input lines
3516 and building data strings. The size of both of these buffers was 10 000
3517 bytes - far larger than anybody would *ever* want, thought I. Needless to
3518 say, somebody hit the limit. I have increased the maximum line length to
3519 20 000 and the maximum data length of concatenated lines to 100 000. I have
3520 also fixed two bugs, because there was no checking on these buffers. Tsk,
3521 tsk. Now exim_dbmbuild gives a message and exits with an error code if a
3522 buffer is too small.
3523
352445. The exim_dbmbuild utility did not support quoted keys, as Exim does in
3525 lsearch lookups. Now it does.
3526
352746. When parsing a route_list item in a manualroute router, a fixed-length
3528 buffer was used for the list of hosts. I made this 1024 bytes long,
3529 thinking that nobody would ever have a list of hosts that long. Wrong.
3530 Somebody had a whole pile of complicated expansion conditions, and the
3531 string was silently truncated, leading to an expansion error. It turns out
3532 that it is easier to change to an unlimited length (owing to other changes
3533 that have happened since this code was originally written) than to build
3534 structure for giving a limitation error. The length of the item that
3535 expands into the list of hosts is now unlimited.
3536
353747. The lsearch lookup could not handle data where the length of text line was
3538 more than 4095 characters. Such lines were truncated, leading to shortened
3539 data being returned. It should now handle lines of any length.
3540
354148. Minor wording revision: "cannot test xxx in yyy ACL" becomes "cannot test
3542 xxx condition in yyy ACL" (e.g. "cannot test domains condition in DATA
3543 ACL").
3544
354549. Cosmetic tidy to scripts like exicyclog that are generated by globally
3546 replacing strings such as BIN_DIRECTORY in a source file: the replacement
3547 no longer happens in comment lines. A list of replacements is now placed
3548 at the head of all of the source files, except those whose only change is
3549 to replace PERL_COMMAND in the very first #! line.
3550
355150. Replaced the slow insertion sort in queue.c, for sorting the list of
3552 messages on the queue, with a bottom-up merge sort, using code contributed
3553 by Michael Haardt. This should make operations like -bp somewhat faster on
3554 large queues. It won't affect queue runners, except when queue_run_in_order
3555 is set.
3556
355751. Installed eximstats 1.31 in the distribution.
3558
355952. Added support for SRV lookups to the dnslookup router.
3560
356153. If an ACL referred to $message_body or $message_body_end, the value was not
3562 reset for any messages that followed in the same SMTP session.
3563
356454. The store-handling optimization for building very long strings was not
3565 differentiating between the different store pools. I don't think this
3566 actually made any difference in practice, but I've tidied it.
3567
356855. While running the routers to verify a sender address, $sender_address
3569 was still set to the sender address. This is wrong, because when routing to
3570 send a bounce to the sender, it would be empty. Therefore, I have changed
3571 it so that, while verifying a sender address, $sender_address is set to <>.
3572 (There is no change to what happens when verifying a recipient address.)
3573
357456. After finding MX (or SRV) records, Exim was doing a DNS lookup for the
3575 target A or AAAA records (if not already returned) without resetting the
3576 qualify_single or search_parents options of the DNS resolver. These are
3577 inappropriate in this case because the targets of MX and SRV records must
3578 be FQDNs. A broken DNS record could cause trouble if it happened to have a
3579 target that, when qualified, matched something in the local domain. These
3580 two options are now turned off when doing these lookups.
3581
358257. It seems that at least some releases of Reiserfs (which does not have the
3583 concept of a fixed number of inodes) returns zero and not -1 for the
3584 number of available inodes. This interacted badly with check_spool_inodes,
3585 which assumed that -1 was the "no such thing" setting. What I have done is